KR970009802B1 - Heater for an advancing yarn - Google Patents

Abstract

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Description

Run heating element

1 is a partial view of a ring of the basic aspect of the heating body according to FIG.

2 is a cross-sectional view taken along the line II-II of FIG.

3 is a side view of an embodiment of a heating body according to the present invention.

4 is a side view of a further embodiment with a ring of small thickness.

5 and 6 are side views of heating elements having spiral rings.

7 and 8 are axial cross-sectional and perspective views of a heating embodiment having multiple heating zones.

9 is a side view of a heating body having a fold length of a ridge portion that changes in the circumferential direction.

10 and 11 are perspective and axial cross-sectional views of a heating embodiment having a ridge height varying in the circumferential direction.

12 is a side view of a heating embodiment having a contact length and a contact height of a ridge portion varying in the circumferential direction.

13A and 13B are a plan view and a front view of a heating body having two four runways.

FIG. 14 is a plan view of a heating element having two ridges with two ridges.

15 to 17 is a side view of a heating element with two ridges, with ridge heights varying.

18 is a plan view of the heating element having two ridges and two four-tracks.

19 is a side view of a heating body with an inserted sleeve and a ring.

FIG. 20 is a side view of a heating body having a sleeve and two four runways. FIG.

21A and 21B show a front view of the sleeve and a perspective view of the main heating body, in which the sleeve has recesses of different shapes.

22A and 22B are cross-sectional views of heating elements with telescopic sleeves.

23 and 24 are schematic views of a combustible crimping machine having a dead force measuring unit and a temperature measuring unit of the yarn.

* Explanation of symbols for main parts of the drawings

1: heating and 2: ring, ring segment

3: pin 4: the main part

5: slot 6: heating resistor

6a: electric wire 7: 4

8: entrance guide 9: exit guide

10: spring clip 11: entrance section

12: end section 13: control section

14: four-way running direction 15: rotation range

16: guide guide notch 17: tube axis

18 feeder 19 cold plate

20: flammable device 21: supply device

22: temperature sensor 23: stepping motor

24: tension measuring device 25a, 25b: dead heating zone

26: saga guider 27: eccentricity

30: heating element 32: blank

33: sleeve 33a, 33b: axial section

34-36: main part 37-39: ring segment

40: center line 41: insulation

42: vertical slot 43: driving fault

44 hole 45 axial guide

The present invention relates to a heating body for heating a running thermoplastic yarn. However, heating elements are known from EP 412 429. This heating body has the drawback that the curvature of the slope (four-way) is given in advance definitely and the curvature determines the spacing of the yarn from the surface simultaneously heated.

Such heating bodies are used, for example, in combustible crimps. However, other uses are also envisioned.

The heating element for heating the thermoplastic yarn (synthetic filament yarn) that runs on the combustor has a generally long rail that is heated to a constant temperature and guides the yarn over it.

For stretching and heat setting of synthetic filament yarns, DE-AS 13 03 384 describes a heated tube, in which the heating tube is wound in a steep spiral. The tube has an injection port and a bead is installed at the end to prevent circumferential movement.

As the thermoplastic material to be used, in particular, polyamide (PA6, PA6.6) or polyethylene terephthalate may be considered, but is not limited to this material.

The object of the present invention is to simply assemble, to change the curvature of the four-way route to a thin range, and to ensure the distance from the heating surface irrespective of the curvature selected at every point of the four-way route for each four-way route. It is to provide a heating device.

Summary of the Invention

The above and other objects and advantages of the present invention are achieved by providing a heating body for heating thermoplastic yarns running along the heating surface spaced from the heating surface over a ridge portion arranged on the heating surface. The heating surface is an outer surface with a curve perpendicular to the longitudinal axis of the heating tube. The ridges are ring segments mounted on the heating surface, at least partially extending around the circumference of the heating tube. At each end of the tube, the guides are staggered in the circumferential direction of the tube and cooperate to guide the yarn spirally along the tube such that the yarn contacts the ring segment without touching the heating surface of the tube.

A further improvement on this invention is that it makes it possible to influence the heat of transfer as appropriate for each use case.

The heating element adjusts the sag guides at the inlet and outlet of the four-way run, thereby allowing the slope of the circumferential spiral to pass over the ring of the saga heating tube and thus the curvature of the four-way run. However, in the other known heating elements described, the curvature of the four runways has a decisive influence on the heat transfer, whereas in the present invention it is not. The heat transfer here depends solely on the temperature of the heating tube and the height of the ring on the tube, but the slope of the helix, ie the curvature and winding angle (winding angle) of the four runways, causes the company to run quietly and stably and also in the case of a combustor. In addition, the twists imparted to the yarns can be selected without affecting the transfer heat such that they propagate unobstructed in the region of the yarn length exposed to the heating body.

Thus, it is possible to reliably control the dead temperature. Since the curvature of the four runways does not affect the heat transfer, the temperature of the yarn depends only on the temperature and length of the heating tube in addition to the height of the ring. Length and winding angle are independent of each other. The length can thus be selected to enable the tube to operate in a temperature range corresponding to the self-cleaning temperature of the heated surface, ie from 300 ° C to about 800 ° C.

Said guides are arranged one before and after each of the heating tubes according to the present invention. The two guides are staggered in the circumferential direction of the heat pipe so that the yarns are guided over the heating pipe in a steep spiral. Thus, guided along the heating tube by a quick spiral, which is bought by the guide. The heating tube is preferably linear. Since the curvature of the yarn path is predetermined by the adjustment of the guide as mentioned above, the heating tube does not need to be bent.

The heating tube is heated from the inside. This may be accomplished by disposing an electrical resistance heater inside the heating tube, which preferably extends over at least a portion of the heating tube length. In this case it is also possible to install several resistive heaters which can be operated and adjusted according to the length of the heating tube in order to enhance heating in a constant area, such as an inlet area. This will then allow to adjust different temperatures over the length of the heating tube.

It is sufficient that the yarn passes over the heating tube and the ring at the sharp line angle of the heating tube and the sharp sharp angle. Considering the high temperatures above 300 ° C. where the heating tube can be heated, only a short length of heating tube is needed. Therefore, the total winding angle of the yarn related to the circumference and length of the heating tube is also relatively small. This angle is preferably less than 180 °. Therefore, the heating tube has the advantage that it is placed on the outer surface of the ring anyway with the same contact parameters, in particular the same helix angle.

However, as will be mentioned later, other tubular shapes of the heating tube are possible, for example elliptical, in particular when the ring height in the four-way zone is not constant over the length of the heating tube. The heating tube may be of any shape in the region of the heating tube deviating from the yarn run. However, when uniform heat distribution over the circumference and / or length of the heating tube is particularly important, symmetrical heating through, in particular cylindrical heating through, is useful.

The ring always extends over the periphery of the heating tube in the vicinity of the slope. The ring does not have to extend over the entire circumference of the heating tube and is therefore described as a ring segment within the scope of the present invention. Allowing the ring to extend only over some circumference of the heating tube in contact with the yarn will lead to the possibility of good heat transfer of the heating tube, in which case the flat side of the heating tube can be covered with an insulating layer. Some circumference in which the ring extends can be further reduced by successive rings being intertwined with respect to each other in terms of four-way, that is, successive rings are helically staggered with respect to each other in terms of slope.

In any case, it is useful to allow the ring to extend to some extent over the circumference, thus pre-adjusting the slope of the slope.

As mentioned above, it is particularly advantageous for the heating body according to the invention to operate at temperatures in the midnight range. This means that the temperature of the polymer residue adhering to the heating element or the ridge portion during the heat treatment of the thermoplastic yarn is so high that it decomposes and oxidizes. After that, only light mechanical cleaning is required at most. This temperature is 300 ° C or higher for polyester and nylon, and may be 800 ° C. The temperature limit at which damage can occur depends not only on the type of polymer, the thickness of the yarn, but also on the length of the heating body, selected spirals and other heating process parameters.

The rings of the present invention each extend in the vertical plane of the heating tube. It is strictly a literal ring.

However, the ring may be inclined relative to the circumferential direction. For example, inclined rings may be placed in a group of parallel planes. The advantage of this case is that the slope of the ring with respect to the curved spiral run can be chosen so that the sag contacts the outer surface of the ring as short as possible. This means that the inclination of the ring should be chosen such that it is opposite to the inclination of the four-way, and narrow to each ring at an angle where the yarn is at 90 ° or little off.

In one aspect of the present invention, the inclination of the ring is preferably selected as opposed to the inclination of the four-way of the heating tube, both of which relate to the mother bus. This is achieved by contacting the ring over the shortest possible distance. The spiral ring can be slid over a cylindrical heating tube in the form of a spiral bead such as a spiral wire and can be exchanged when worn. In the case of using the spring wire, the wire is tightly contacted with the heating tube by elastic contraction and is compressed by the longitudinal direction so that the wire is pulled out of the heating tube, so that the exchange and cleaning of the spiral wire can be performed simply.

Known heating elements in which the yarn is guided by a ridge portion on a heavily heated surface have a midnight temperature in which the surface and a portion of the ridge portion are required, while the ridge portion is severely cooled by the rider so that the temperature drops due to the midnight range. It is a drawback.

In another aspect of the invention, a ridge portion running upwards is formed by recesses, which are formed on the heating surface of the heating tube, with one ridge portion remaining in the axial direction between the recesses and the ridge portion being circumferential. Direction or inclined there. These recesses may extend in the circumferential direction and over the entire circumference and in this case have a groove-like appearance. However, the recesses may only extend over some circumference of the heating tube, ie over some circumference provided for the spiral four-way run. In this case the grooves which are preferably successively in turn are also arranged staggered in the helical direction.

The rings can thus be arranged in a vertical plane or extend in a group of planes which are inclined and parallel to each other or along the spiral of the heating tube. In this case, the above description holds for the direction of the spiral. This structure of the ridge is provided for other heating elements and applies equally if the heating surface itself is curved in the four-direction direction.

This aspect of the invention results in good heat transfer from the heating tube to the contact surface of the ring, so that it can be ensured that the contact surface is also always heated to midnight temperature.

Considered as an advantageous range, it was surprisingly found that when the ring height or the depth of each recess is selected from 0.1 mm to 5 mm, preferably from 0.5 mm to 3 mm, there is no risk of burning of the yarn even in the case of high temperature and thin yarn. The lower limit is determined in advance by the radius of the heating tube and the inclination of the spiral through which the yarn is guided or the degree of curvature of the heating surface and the spacing between the subsequent ring / ridge portions and should be chosen so that the yarn does not come into contact with the heating surface itself.

The following should be emphasized. In other words, the ridge portion and the heating surface are integrally formed. Thus, the fact that good thermal contact is obtained and that the ridges only have a small height from the heating surface is that the sum of each and both facts represents a marked improvement over the current state of the art. These improvements can be advantageously used in a variety of high temperature heaters running along the heating surface with curved slopes.

When heat treating synthetic fibers, especially synthetic fibers of small thickness (denier), the wear on the surface of the guides plays an important role in the quality of the product. This is particularly well suited to a combustible crimping machine which rotates around its own axis in the region of the saga heating element. In order to prevent unilateral wear, it may be purpose to install a heating tube of this heating body rotatably. It is then possible to rotate the heating tube permanently or at regular time intervals so that a new four-way run is formed.

However, due to the advantageous availability of the electric resistance heater, this rotation is only limited.

In this case, the improvement is composed of a crimped ring threaded on the outer surface of the heating tube and threaded on the inner surface of the ring segment, so that the inner surface of the crimped ring is screwed into the outer surface of the heating tube. do.

It also includes a plate-shaped sleeve that extends over the outer surface to coincide with the outer surface of the heating tube, and the sleeve is rotatable around the circumference of the heating tube and the ring segment consists of bulges spaced axially apart from the sleeve. Provide help

Relative rotation between the ring and the heating tube or between the sleeve and the heating tube is naturally only possible when the heating tube is formed in a cylindrical shape. However, this is not necessary when the wearable ring is a matter of priority for exchangeability.

The ring can be made of a separate crimp ring component and inserted into the heating tube. The inner diameter of the ring is made substantially the same as the outer diameter of the heating light so that the electrothermal contact between the rings on the heating surface is good.

In another aspect of the present invention, each of the ring segments is formed with radial slots extending into the circumference of the ring segment and extending outwardly, each slot having a width at least equal to the diameter of the heating tube, The slots of adjacent ring segments are staggered at an angle to the circumference of the heating tube by a predetermined amount corresponding to the spiral angle of the running thermoplastic yarn. This structure allows for the exchange of the rings individually, in which case the guide portion of the ring extends only over some circumference of the heating tube. Nevertheless, this structure also makes it possible to achieve the use of the entire circumference to drive the yarn.

In another aspect of the invention, each of the ring segments has a front side and a back side, wherein at least a plurality of ring segments are axially at the rear side of the adjacent ring segment and an axial recess formed at the rear side at least partially extending therethrough. A pin extending axially outward from the front side that engages the recess, each pin having a predetermined amount such that the slots of adjacent ring segments spaced in the axial direction substantially lie in the spiral corresponding to the spiral angle of the running thermoplastic yarn. The circumferential circumference of the heating tube is staggered relative to the radial slot and the ring segments are axially spaced by the pins. This allows the ring to always adjust the same amount in the circumferential direction in the ring.

Another aspect of the invention is that each of the ring segments has a plurality of axial recesses at the rear side which at least partially extend therethrough and form part of a concentric circle with the heating tube, each of the pins having a rear side of the adjacent ring segment It is meshed with one of the recesses, and is staggered at an circumferential circumference of the heating tube by a predetermined amount corresponding to the spiral angle of the running thermoplastic yarn. In this case, the amount of this stagger can be selected.

To ensure intimate thermal contact between the ring and the heating tube on the four-way side, each ring is pressed with the heating tube by a spring clip. This sprinkling clip, on the one hand, is in contact with the two side walls of the slot and its central part is in contact with the heating tube.

Even in the case of installing the ridge portion or the ring on the pipe, it will be particularly advantageous to select the height with respect to the heating surface from 0.1 mm to 5 mm, preferably from 0.5 mm to 3 mm. Here, the lower limit is determined in advance by the radius of the heating tube, the inclination of the spiral running the yarn or the degree of curvature of the heating surface, and the gap between successive ring / ridge portions, and should be selected so that the yarn does not come into contact with the heating surface itself.

In another aspect of the invention, at least some circumference of the heating tube provided for the four-way run is covered with a plate sleeve, which is in close contact with the surface of the heating tube and in intimate transfer heat contact with the surface of the heating tube. It should therefore be clearly emphasized that the sleeve itself does not need to extend over the entire circumference of the heating tube, but only to a portion of the heating tube circumference (heating surface) towards the four-way run.

However, the sleeve may be formed of a tube with a thin wall. In this case the inner section of the sleeve closely fits the outer section of the heating tube. When the heating tube is formed in a cylindrical shape, it is advantageous that the sleeve is also preferably formed in a cylindrical tube, since this can ensure rotational guidance (movement) of the sleeve.

Rings having the above shapes are formed in the outer jacket of the sleeve. The sleeve is preferably composed of thin plates. Rings can be formed by compressing the sleeve into several vertical planes so that the raised ridges are outward.

This creates a hollow space that can interfere with heat transfer. On the other hand, the installation of heavy rings on thin sheets for good heat transfer, such as welding, is costly and difficult in manufacturing technology.

In another aspect of the present invention, the inner diameter corresponds to the outer diameter of the heating tube and its jacket slides over the heating tube with a substantially smooth surface in the sleeve or cage with uniform recesses arranged in axial row. It is. Preferably, the sleeve is arranged with a row of uniform recesses opposite, and preferably next to the aligned rows of recesses are rows of other shaped recesses. If possible, the rows extend along parallel axes. Between the rows of arranged recesses, uniform ridges corresponding to the shape of the edges extend over the circumference. The sleeve is fixed so as not to be axially displaced over the heating tube but can be rotated. This has the advantage that the yarn can always be guided over a clean contact point of the ridge by periodically or gradually rotating the sleeve in the canal, while the yarn can be heated in a wide temperature range by the different shape of the ridge. Since the ridges or recesses of the same shape, respectively, in the sleeve are opposed to each other or are repeated at regular angular intervals, they form two or more yarn contact paths. Otherwise, the longitudinally extending ridge portions between the rows are not important for the nature of the present invention.

In this case, the sleeve is a thin plate and the thin plate is engraved with a number of recesses which are sequentially continuous in the axial direction.

These recesses are formed such that the circumferentially extending ridges remain between the neighboring recesses in the axial direction. Here, the ridge portion may not be placed on the vertical plane of the heating tube, but may be inclined with respect to the vertical plane. The ridge does not need to extend over the entire circumference. Rather, it allows the sleeve to consist of a piece that extends over the entire length of the heating tube, so that the recesses are also desired to extend only over some circumference and some width, respectively.

As already noted, low ring laying is not only feasible but also advantageous for the uniformity of temperature transfer and also for good control of temperature transfer to the yarns. For this reason, it is proposed to be particularly advantageous to select a sheet thickness of 0.1 mm to 5 mm, preferably 0.5 mm to 3 mm. Reference may be made to the above limitations.

The foregoing aspect of the present invention may vary the spacing of the ridges over the length of the heating tube, which is described in detail below. In order to make this possible even with the use of a sleeve, further variations are proposed. This variant results in that the sleeve is divided into individual axial sections, which sections can slide into each other telescopically (stretchy). Each section has a ring on its periphery. By moving the sections more or less inwards from each other, it is possible to change the spacing of the rings.

The provision of the ridge portion for the sagide on the thin plate covering the heating surface and the formation of the ridge portion by the thin plate with the recesses provide the above advantages in any heating body.

As described above, the guides are disposed at the inlet of the heating tube and the outlet of the heating tube. The two guides are staggered with respect to each other in the circumferential direction of the heating tube such that the yarns run over the ring in a steep spiral. The slope of this spiral and the radius of the outer surface determine the curvature of the four-way run. The curvature of the four-way is also crucial for the stability of the four-way. In order to adapt the stability of the four runway to other parameters affecting the stability of the four runway (e.g. It is proposed to be arranged for displacement and positioning. In addition, it may further comprise a plurality of corresponding guides at each end of both sides of the heating tube, each of the guides in cooperation with the opposite side guides, so that the heating plasticizer does not come into contact with the external heating surface of the heating tube Directs one of the plurality of thermoplastic yarns spirally along the heating tube, so as to contact the outer ridge portion of the.

As already explained, it is advantageous in terms of thermal engineering to heat the heating tube symmetrically.

From a thermal engineering point of view, another advantage of the present invention, which allows the yarn to loop in a unidirectional spiral, leads to an excellent use of the heating tube. As long as the total winding angle of each yarn is less than 180 °, it is also possible to heat two or more yarns on each heating tube by this method. Naturally this makes the operation and especially threading difficult.

This is especially used for the purpose of insulation, since it is necessary to surround the heating body with an insulating jacket which allows only limited access to the heating tube. Such insulation jackets are preferably advantageous to enclose the entire heating tube, with only a minimum of narrow radial slots open and the slots extending along the busbar or along the busbar respectively. Such an insulating jacket allows only a limited number of threads to be threaded.

Another embodiment of the invention in which two yarns are threaded to the heating tube in opposite ramps allows the two yarns to be threaded in any desired order without difficulty. In this case, one yarn guide is arranged at the inlet and the outlet for each yarn. Said guides, on one side, for example at the outlet of the heating tube, are placed adjacent to each other and substantially positioned in the plane of the threading slot. The two yarns are located in the other side, in this case at the inlet of the heating tube, in operative positions spaced apart from each other symmetrically with respect to the radial plane of the threading slot. Suitably for threading the yarn the yarn can be adjusted between the radial plane of the threading slot and the operating position. It is thus possible to thread each yarn in the radial plane of the threading slot with a sagguide at the inlet and outlet of the heating tube. One of the two guides may then be moved circumferentially to bring the yarn to the working four-way track. The two companies can be addressed alternately in any desired order in this way.

There is a problem in that the heating surface temperature of the heating body using the thermoplastic material having a substantially higher target temperature to heat the yarn must reach the target temperature but not exceed it. For this purpose only the temperature and dead velocity of the heating surface can be adjusted as parameters while the dead thickness and the length of the heating body are fixed.

However, optimization of the heating action for the yarn is of great importance for the quality of the yarn and for the texturing of the yarn in the combustor. For this reason, it is proposed that the contact length of the sag guide can be adjusted so that optimal control of the heating action is allowed for the desired running speed and the sand diameter (fineness), respectively. To this end, the guiding body and the guiding body are configured to be interchangeable.

In order to optimize the heating action and to adapt to the four-speed running speed and fineness, it is advantageous to adjust the ratio (contact length) of the contact length of the guide to the non-contact length of the heating element, especially in the region of the control area. It is proposed to be. Here, the heating body mainly has the shape of a tube. It is therefore possible to provide several ridge / ring segments circumferentially extending in the circumference of the heating tube. These ridges are arranged one by one around the other, staggered from the other. Thus, the sag winding the tube spirally is alternately contacted with the ridges in an area where the ridges have substantially the same contact length.

A further variant of the present invention thus provides additional control parameters that can affect heat transfer to the yarn and thus the target temperature of the yarn. This parameter is the ratio of the contact length / non-contact length of the four-way run along the heating surface, and also the height of the ring / ridge portion or the depth of the recess that allows the ring or each ridge portion to be formed over the heating surface. In these embodiments of the present invention, the width of the heating surface in the transverse direction is different with respect to the circumferential contact ratio of the heating tube and / or the height of the ridge portion or the four-way run.

The ring segment / ridge section thus has a working width which is a multiple of the yarn diameter in the transverse direction with respect to the running direction. The contact length of the ring segment / ridge portion in the circumferential direction over the working width is different and the four mileage can be adjusted relative to the working width of the ring segment / ridge portion.

The four-way can be displaced relative to the circumference of the heating tube or the ring / ridge portion arranged thereon or the sleeve extending thereon. To this end, the entrance guide and the exit guide can be synchronously adjusted in the circumferential direction in all aspects of the present invention. However, it is also possible to rotate the circumferential direction of the heating tube or the ring mounted thereon or the slip fitted thereon instead of changing the position of the sagguide. In all of these cases, it is important to move the trajectory path relative to the circumference of the heating tube. This relative movement can be done manually and it is possible to change the height and width continuously or step by step. The advantage of this relative movement is that it has a very direct effect on heat transfer and thus on the target temperature of the yarn. Therefore, it is possible to adjust the target temperature to remain constant at a predetermined desired value by first measuring the dead temperature of the driving company continuously and moving the yarn relatively in the circumference of the heating tube.

This means that in the case of the heating element provided with the sleeve, the recesses increase or decrease in the transverse direction with respect to the four-direction direction. It is also possible to have different shaped recesses arranged side by side in the sleeve in the circumferential direction of the heating tube, ie transverse to the four-way, or have the ring segments / ridges have a fan with a constant radius / constant height, or the width of the ring segments / ridges And / or for different heating zones of different heights.

Not only can this change the heat supply for each yarn, it also allows the relative adaptation of the target temperature to the two companies, thus changing the heat supply relative to a number of yarns simultaneously being guided along the heating body.

Effective yarn temperature and thus target temperature also have a special influence on the quality of yarn in the flammable crimping process. For this quality, the dead force measured downstream of the friction combustor was found to be an important indicator. Thus, the dead force and in particular the constant force measured between the friction combustor and the supply window following it is adjusted by the relative movement of the four-way run around the circumference of the heating tube, so that the measured and It is possible that the deviation does not exceed a certain tolerance.

If there are multiple four tracks in a heating tube, additional rings must be formed so that the ring height or depth of each recess follows the same change as desired when synchronously moving the two four tracks from the circumference of the heating tube. Problem occurs.

Driving the saga over the heating element and in particular the heating tube of the present invention has two essential functions. In other words, in the entrance area of the four-way journey, the amount of heat required for the company should be transferred. In the sphere area, it is important to equalize the heat distribution over the cross section of the yarn to achieve the target temperature in the entire cross section of the yarn. These two different functions result in different heat transfer strengths in different longitudinal cross sections of the heating tube. This is accomplished by allowing contact ratios and / or ring heights to be formed differently.

The area of the tube length where it is important to achieve the target temperature over the entire cross section of the yarn is indicated by the end section in this application. The section of pipe length that is primarily involved in heat transfer is described as the control section. The ring height where the contact ratio is substantially smaller or smaller at the end section is described as the end section. The contact ratio is substantially smaller at the end section or the ring height is several times larger than the corresponding value of the control section at the end section.

What is special is that in the inlet area of the heater, the guides are arranged only at large intervals so that the live contact only slightly or not at all. Preferably, the inlet area is provided with only one inlet guide and one outlet guide. Moreover, the inlet guide proved advantageous to remain unheated. For this reason, it is suggested that the inlet guide is not in thermal contact with the heating surface.

This allows the guide to remain substantially unheated, allowing the thermoplastic material to separate. However, the exit side guide is self-cleaning. The exit guide is thus preferably connected directly to the heating surface and located at the start of the so-called control section.

The control section is where the company gets its set temperature. This section follows the inlet region of the heating element. Several guides are arranged in the control section. These guides are equally or variably spaced from one another as disclosed in EP-A2 0 412 429 described above.

The use of the sag guide in the control section ensures that the saga is guided at precisely spaced intervals from the heating surface. Furthermore, in order to ensure that the saga does not come into contact with the heating surface at the inlet section, the heating element may be arranged so that the distance from the four rows of the heating surface in the inlet section is a multiple of the same distance from the heating surface in the control section. It is also proposed to have a stage in the heating body between the section and the control section. The arrangement of these guides ensures that the yarn reaches the required temperature on one side and that the heating temperature is self-cleaning on the other side. Only ensure that the guides are placed. In this control zone the temperature of the heating body is preferably precisely controlled by the control system. Precise guidance of the yarn to the heating body allows the yarn to have the desired temperature desired. In the inlet section, the heating of the yarn takes place with a large temperature gradient between the heater and the yarn, thus using the recognition that the precise temperature control of the yarn is neither necessary nor possible, eliminating precise threading in the inlet section.

The heating of the yarns in the control area is performed by first obtaining the temperature desired by the outer insects of the yarns.

However, the yarn needs to be heated uniformly over its entire cross section. This object is achieved by causing the guide sections to be arranged at large intervals after the control section, or to have the end sections arranged without the guides arranged. In order to avoid the yarn coming into contact with the heating surface of the heating body, here also preferably the spacing between the four runway and the heating surface should be several times the distance that the four runway and the heating surface have in the control area. This arrangement of end sections prevents heat loss only when little heat is transferred and ensures a uniform distribution of heat supplied to the control section over the entire quadrant.

Longer lengths that are not supported in the inlet section may be acceptable, as long as the inlet section is found to have a small tendency to fling. Lengths of 400 mm to 500 mm are possible. However, the length should be limited to the extent necessary to achieve the desired preheating of the yarn to limit costs.

In any case, the end section is always shorter than the inlet section. The length of the end section is preferably limited to 300 mm and shorter than that.

An important field of use of the heating body according to the present invention includes a combustible crimping process and in particular a combustible crimping process for draw texturing of thermoplastics such as polyester and nylon. In this process, undrawn or partially oriented (POY) yarns are fed from the feed bundle and drawn out by the feed system. The live then travels through the heating element and then through the adjacent cold plate and finally through the friction combustor. The yarn is drawn out from the friction combustor by the supply system and then wound up. Additional heaters and additional feeders may be arranged before reaching the winder. The yarn gets twisted in the circumferential direction due to the friction action imparted by the friction combustor, which returns from the friction combustor to the heating body and is released again in the friction combustor. The yarn passes through the heating element of the present invention at a speed of 1000 meters or more per minute without friction or overheating problems.

In some embodiments with an overlying ring or sleeve, it also offers the possibility of regular self-cleaning of the dead heat zone by rotating the dead heat zone at regular intervals under the running yarn.

Although some objects and advantages of the present invention have been mentioned, other objects and advantages will become apparent as described in detail below with reference to the accompanying drawings.

In the following description of different embodiments of the present invention, the same member number is used for the same member.

All the heating elements shown are made of a tube 1 (heating tube in the following). Heating tube I is cylindrical and linear. It will be described later, but it may be formed of a rotor section or rotor segment to achieve a four-way along the axis.

The heating tube I is provided with one or several heating resistors 6 extending in parallel therewith. The resistance heater is a cartridge and extends over the entire length of the heating element. Referring to FIG. 3, the heating resistor 6 extends over the entire length of the heating tube 1. The heating tube I is composed of a large thermally conductive metal, such as steel or preferably a copper-aluminum alloy. The electrical leads are marked 6a. The illustrated heating body is actually surrounded by an insulating cage 41, which has a radial slot 42 for threading the yarns and forms a peripheral gap for the heating tube 1. Saga runs in this peripheral gap.

A plurality of ridges are arranged on the heating tube I. The ridge section also consists of ring segments, which are also described as rings in the area of the four-way journey.

The perimeter of the ring segment may be spherical. It is of a friendly (friendly) and abrasion-free nature to the outside, ie it exerts a negligible frictional force on the rider running above it. The circumference of the ring 2 serves to guide the yarns 7, and the yarns are guided on the circumferential surface of the ring segment by the inlet guide 8 and the outlet guide 9. The inlet guide 8 is displaced in the circumferential direction of the heating tube 1 with respect to the outlet guide 9. This is because the thread 7 wound the heating tube 1 with a screw or a spiral and the inclination of the screw or the spiral ( Gradient) means depending on the mutual circumferential staggering of the sagittals 8 and 9, the helix of which is the radius of the ring, the length of the heating tube 1 or the axial distance of the two sags 8 and 9 It has curvature which depends on the shift | offset | difference of the circumferential direction of the guides 8 and 9. The size is selected so that the diagonal radius of curvature is 5 to 25 mm, preferably 10 to 25 mm. In any case, however, it should be particularly emphasized that the yarn 7 does not come into contact with the heating surface, ie the jacket of the heating tube 1. The diameter of the tube, the height of the ring over the jacket of the heating tube 1 and the inclination of the helix in which the yarns 7 run are selected accordingly. At least one of the sagittals 8, 9 is movable and preferably pivotable about the axis of the heating tube I with respect to the other, so that the four runway on the disc shaped ring 2 is driven by the yarn 7. It can be changed by changing the pitch of the thread to be formed.

The ring segment may extend as a ring around the entire circumference of the heating tube I. The entire circumference of the heating tube can then be used for a number of four runways and / or to move the four runways to the periphery with less wear or less contamination.

The ring segment 2 must extend at least over the sectoral sector of the circumference occupied by the helix of the yarn 7. This has the advantage that the yarn 7 can be immediately threaded.

In addition, if successive ring segments are staggered in terms of circumferential slope, relative movement of the oblique line to less worn and / or less contaminated portions of the ring segment circumference is likewise possible in this case.

It is possible to reduce the length of the ring segment in the circumferential direction to the length necessary for the guiding of the yarn 7 when successive ring segments with a spiral pitch running along the yarn over the circumference of the heating tube 1 are shifted on the circumference. . The ring segment is raised on the heating surface in this way. However, such a shortening is very difficult to thread the yarn 7, and the helix of the yarn 7 can no longer be repositioned by a series of shortened heights and is no longer circumferential when the runway is contaminated. The disadvantage is that there is no need to avoid it in other areas.

Each ring segment is located in a vertical plane of the heating tube, that is, in a plane orthogonal to the axis of the heating tube 1. However, other positions may also be considered and in particular may be referred to FIGS. 4 to 6, 20 and 21, as will be readily realized in the manufacturing technique, which will be further described below. In any case, the ring segments associated with a four-way route will always lie in a group of parallel planes. When the ring segments of the bus bar of the heating tube 1 do not intersect the bus bar at 90 ° when they are not located in the vertical plane, the pitch of the helix of the four-way run will need to be selected opposite to the inclination of the bus bar of the ring. Even in this case, the pitch of the spiral is shortened and the contact length of the spiral 7 and the yarn 7 on each ring segment is shortened, and reliable guidance on the ring segment is achieved.

Next, an embodiment will be described with reference to FIGS. 1 to 3.

The ring segment here is discreetly implemented as an independent component and is sandwiched on the heating tube 1. The disk-shaped ring 2 shown in FIG. 1 and FIG. 2, respectively, has a simple cylindrical hole, and the hole is almost suitable for the outer diameter of the heating tube 1. In this way the disc can be stringed in the heating tube 1. They are thus in good thermal conductive contact with the heating tube 1. This example embodiment has a disk with radial slots 5 extending from its inner circumference to its outer circumference, the opening width of which is roughly equivalent to the diameter of the heating tube 1 and the two opposite edges of the slot are parallel to each other. . The outer frame of the disk-shaped ring 2 is spherical. On one face of the disc shaped ring 2 there is a groove or recess 4. A pin 3, which acts as a jutter spacer, protrudes from the opposing front end of the disc shaped ring 2, and the distance from the disc axis of the pin corresponds to the distance from the disc axis of the recess. It is sufficient that each discoid ring 2 has one such recess 4 respectively. However, as can be seen from FIG. 1, it is advantageous to have the plurality of recesses 4 positioned at the same distance from each other along the circle coaxial to the axis of the heating tube 1 and also to the axis of the disc shaped ring 2. Do.

The discoid ring 2 is placed in the heating tube 1 such that the pins 3 projecting from one discoid ring 2 engage with one of the recesses 4 of the discoid ring 2 adjacent in the axial direction. The disc shaped rings 2 are preferably staggered at regular angles to one another on the heating tube such that the slots 5 and the fins 3 surround the heating tube 1 in one thread. As shown in FIG. 1, when a plurality of recesses 4 are arranged at one distal position, it is possible to adjust the thread where the slots 5 are located, and the yarn 7 travels on the heating pipe I (below). Suitable for screws. In order to fix on the tube 1, the ring 2 is supported by two opposing slot walls, the center of which has a wire-shaped spring clip 10, which is elastically placed against the light 1, in the slot 5 Can be inserted inside. By removing this club, each disc shaped ring (2) can be removed from the pipe and replaced. This is especially important when one of the discs is unacceptably damaged by wear.

The guides 8 and 9 are raised on both sides of the slot 5, and the threads of the thread 7 extend in the region of the disc shaped ring 2 lying outside of the slot 5. The thread thread on which the pin 3 and the slot 5 corresponding thereto are placed corresponds to the thread of the four-way run in the direction of the pitch and substantially in the pitch size thereof. Thus, the entire periphery of the disk-shaped ring 2 which remains intact outside the slot 5 can be used for changing the four-way.

Preferably the disc is made of heat and fire resistant materials such as aluminum oxide or titanium oxide. In order to enhance the abrasion resistance of the disc edge, it may optionally be covered with a suitable metal, and the disc edge may be polished or polished to enhance its affinity.

The embodiment described next with reference to FIG. 4 corresponds to that of FIGS. 1 to 3 and has the following features. The rings 2 are tightly connected to the heating tube 1 by, for example, soldering and are located at equal intervals from each other. However, the rings 2 may consist of bead portions by press-fitting into the heating tube at regular intervals. The ring 2 may be made by circumferential grooves machined into the outer jacket of the heating tube 1. The radially protruding face of the ring 2 is spherical and of affinity. The ring 2 is used to guide the yarns 7 at a distance above the heating surface, ie above the jacket surface of the heating tube 1, and the four runways spirally surround the heating tube 1. As implied, there are four guides 8 and 9 at both ends of the heating tube 1 and the mutual staggering of these guides determines the pitch of the thread or spiral of the slope. At least one of the two guides 8, 9 can be adjusted in the circumferential direction of the heating tube I with respect to the other.

This allows the inclination of the thread to be adjusted. Otherwise, reference may be made to the descriptions of FIGS. 1 to 3. The fundamental difference from the embodiment with reference to FIGS. 1 to 3 is that the ring 2 is fixedly connected to the heating surface or forms part of the surface.

In particular, it is possible to make the ring with a thick wall initially. Then the area of the heating tube which should have a diameter smaller than the ring 2 is selected and the ring 2 is finished from the surface. In all of these embodiments of the embodiment according to FIG. 4, a very good heat transfer contact is made. This results in the contact surface of the ring 2 having a temperature almost equal to the heating surface. Thus, when the temperature of the heating surface is adjusted to the self-cleaning range, that is, 300 ° C. to 350 ° C. or higher, and about 800 ° C., a self-cleaning effect also occurs in the ring 2. This means that the residue can be decomposed and wiped off lightly as ash, or continuously swept away by the yarns 7 so that no contamination of the surface or yarns occurs at all.

In this embodiment of the invention the ring 2 is located in the vertical plane of the heating tube 1.

In contrast, the embodiment described with reference to FIGS. 5 and 6 shows that the heating tube is surrounded by a single ring 2 over its entire length, which ring is a spiral spring, or a spiral or a threaded wire of the same meaning. It is characterized by having a shape. This bead may be a wire fixedly connected to the tube 1 by, for example, soldering. However, a spiral ring can also be obtained by processing a ridge from the wall of the heating tube by cutting off a portion of the wall of the heating tube. This embodiment has the above advantages and results in a particularly good heat transfer contact between the ring and the heating tube.

As shown in FIG. 6, for this embodiment the helical bead consists of a spring wire, which is a wire to a flexible elastic material. The spring wire slides on the jacket face of the heating tube 1 and is configured to fit the jacket face elastically and tightly or with good thermal contact. Therefore, the inner surface of the wire should be as smooth as possible.

The pitch of the wire-shaped ring 2 which is arranged spirally around the heating tube 1 can be changed as one end can be rotated about the other end at the jacket surface in the circumferential direction and can be moved in the axial direction. By way of illustration, the pitch and length of the heating tube 1 through which the threaded spirals described herein vary.

Too large or too narrow a cylinder enclosed by the above-described spiral guide thread and corresponding to the outer jacket of the heating tube can be removed again by the relative adjustment of the two spiral ends in the circumference and / or axial direction of the heating tube, Therefore, the spiral is adapted to the diameter of the heating tube 1.

In FIG. 6, the helical ring 2 is shown by the solid line and the contracted state by the dotted line 2a. The expansion or contraction resulting from this change in the spiral is corrected by the relative adjustment of the spiral tip in the circumferential direction of the heating tube 1.

Likewise, in FIGS. 5 and 6, the yarns 7 are guided along the helix, the pitch of which is in the opposite direction to the pitch of the helical beads forming the ring 2 in this case.

As a result, in both cases it is achieved that the contact surface between the yarn and the ring or each bead or each wire remains as short as possible at the resumption contact point. On the other hand, it is clear here that the slopes cause a significant change in the contact surface. Moreover, in this case as well, as shown in FIG. 6, the advantage is that it is possible to change the density in contact with the guide surface of the ring or the respective spiral. In particular, it is possible to specify a range with a ring of large density. . This is particularly important in the control section of the length of the heating tube. In other longitudinal sections, in particular in the inlet and outlet end sections no rings are provided in this case.

This is achieved by means of an inlet and / or outlet guide (8, 9) rotatably disposed in cooperation with the stationary heating tube (1), or by an inlet and / or outlet yarn rotatable in cooperation with the rotatable heating tube (1). Can be achieved by a guide.

In the embodiment with reference to FIG. 1, only the exit guide 9 is rotatable relative to the tube, while the inlet guide 8 is stationary mounted.

In FIG. 7, the exit guide 9 formed by the notch 16 is rotatably disposed at the lower end of the heating tube 1 and is rotatable in a rotation range 15 relative to the heating tube.

As noted, upon rotation of the exit guide relative to the heating tube, the yarn 7 draws a spiral on the ring 2 and its geometry (winding, pitch) is notched 16 on the exit guide 9. 16 depends on the rotational position of the notch.

As described above, the embodiments with reference to FIGS. 4 and 5 are constructed in that the jacket of the heating tube and the ring is integrally formed, i.e. they are soldered or welded or otherwise shaped on the heating surface. It is characterized in that it is fixedly connected or machined from the jacket. This feature also applies to the embodiment with reference to FIGS. 7 to 18.

This concept of the present invention can be basically applied to all heating bodies which run the yarns by the ridge along the heating surface, preferably along the curved heating surface in the four-direction direction. However, in particular, this concept of the present invention is applicable to all heating bodies according to the present invention. However, in addition to this, the present invention may be additionally or alternatively applied to the embodiments referring to FIGS. 3, 4, and 5. This method is as follows. The ring only has a very small height. 3 to 5 are exaggerated. The height of the ring on the heating surface (the jacket of the heating tube), such as the difference between the radius of the ring and the radius of the heating tube jacket, is an amount as small as 0.3 mm, not exceeding 5 mm and preferably not exceeding 3 mm. The minimum height is selected so that yarns do not contact the heating jacket between the rings. Therefore, it depends on the spacing of the minimum height ring and the radius of the heating tube jacket. This dimensioning, on the one hand, ensures good heat transfer to the outer circumference of the ring, thus ensuring that there is always a midnight temperature, or in some cases a very high temperature. On the other hand, however, it is also ensured that air turbulence is guided at the edge of the heating tube jacket where there is no disturbance. In this respect, the yarn is only exposed to the heating surface, ie heat radiation from the jacket of the heating tube.

There is no airflow that results in cooling or uncontrolled temperature control.

This concept of the present invention can be basically applied to all heating bodies which run the yarns by the ridge along the heating surface, preferably the heating surface curved in the four-direction direction. In particular, however, this concept of the invention is applicable to all heating elements according to the invention.

Further, referring to FIGS. 7 and 8, this embodiment has the following features.

The yarn 7 first travels through the inlet guide 8 and then reaches the circumferential region of the heating tube. The yarn has axial and circumferential components along the heating tube and is guided by the sag 9 at the outlet end. In this case, the guide 9 is a disk having a guide guide 16 and rotatable about a tube axis. 7 shows in simplified form the aligned position of the inlet guide 8 and the notch 16.

FIG. 8 shows that the disk of the guide 9 is rotated so as to guide the axial and circumferential components to the saga tube and thus draw a sharp spiral. The adjustment of the disc allows to control the looping of the yarn about the tube in the circumferential direction. Authorization is synonymous with the curvature of four. Therefore, the winding allows the yarn to lie flat against the pipe or against the guide pipe mounted on the pipe.

The heating body consists of three sections, namely the inlet section 11, the control section 13 and the end section 12. Both the guide 8 and the first ring 2.1 of the control section 13 provided as a guide guide the yarn over the inlet section 11.

If possible, the inlet guide 8 is not in contact with the heating body. This achieves that the sagaid 8 is not heated. Therefore, deposits that occur when the yarns are heated are not formed in the sagaid 8. As mentioned above, the exit guide of the inlet section 11 is formed by the first ring 2.1 of the control section 13.

The heating surface where the yarn goes straight, i.e. the jacket of the inlet section 11, is spaced from the cross section, which is a multiple of the distance of the yarn from the heating surface, i.e. the jacket of the control section extending between the rings (2.1, 2.2, 2.3). Range. Similarly, the distance of the guide 8 from the first ring 2.1 of the control section is several times the spacing of the rings in the control section. In this case, lengths up to 500 mm can be allowed. The length here depends largely on the tendency to vibrate. Preferably, the length of the inlet section 11 is chosen to be smaller and at least to allow efficient preheating of the yarns.

The temperature control of the heating body consists of a sensor (not shown) which detects the actual effective temperature of the control section 13. This temperature is regulated so the control section has very accurate temperature control.

The control section 13 has a plurality of rings 2.

According to the invention each of these rings 2 comprising the first ring 2.1 is configured as a ring extending around at least some circumference of the control section. These rings not only have a constant height above the remaining jacket portion of the control section 13 but also have a predetermined predetermined spacing. The number of rings is determined not only by heat transfer but also by the tendency of the yarn to vibrate. The height of the ridge portion with respect to the jacket of the control section is selected small and preferably becomes 3 mm at most. Preferably it is smaller than 1.5 mm and larger than 0.3 mm.

These rings are machined from the jacket of the control section. As a result, they have a large thermally conductive contact with the heating body. Their small height ensures that the control temperature also prevails at the contact surface.

As a result, a heating body temperature of 300 ° C. or higher and selected to be high in order to cause decomposition and incineration of the sand residues is present on the contact surfaces of the rings 2.2 and 2.3. As a result, these sagguides have excellent self-cleaning properties.

The width of the ring in the direction of yarns is likewise crucial for heat transfer in all embodiments.

For the protection of the company, this contact length is selected shortly and the heat transfer requirements and compromise adjustments are necessary. The axial spacing between the two ridges (the spacing of the guides) is likewise affected by heat transfer. As a whole, it is possible to apply a ratio of contact length / spacing of up to 20%. Preferably this ratio is smaller, preferably less than 10%.

The distance of the heating surface, ie the jacket of the inlet section, is 3-10 times the height of the ring 2 with respect to the jacket of the control area. Accordingly, the examples in the drawings are not to scale.

In the end section, the yarn is again guided by only a few sag guides, in this case by the ring provided as the exit guide of the control section as well as the above-mentioned saide 9 disc with the sag guide notch 16. . The spacing between the slope and the jacket of the end section 12 is again several times greater than the height of the rings 2.1, 2.2, 2.3 with respect to the jacket of the control section. Also here, the same dimensioning rules as for the inlet section 11 apply. However, overall, the spacing of the guides in the end section is smaller than in the inlet section. The spacing of the rings is 300 mm and preferably smaller. The disk 4 located in the heating tube is similarly heated to the midnight temperature by heat transfer.

Otherwise the structure of the ring is as described with reference to FIGS. 1 to 6. 7 and 8, the ring with the jacket of the heating tube is made integral.

For implementations with reference to FIGS. 9 and 10/11, the following holds:

The heating body also has an inlet section 11 and an end section 12 at the inlet of the heating tube 1 and / or the outlet of the heating tube 1, as in the practice of FIG. 7 and FIG. 8, respectively. Has a smaller radial spacing to the traveling yarn 7 than the jacket face of the heating tube 1.

There is a control section 13 between the inlet section 11 and the end section 12, which in this case has a special inlet section, the control section and the end section, 7/8 or 9-11. As well as the embodiment illustrated in FIG. It has an additional feature that can be used even in the case of a uniform or other non-uniform distribution of the ring 2.

In other words, in particular, as can be seen from FIG. 9, the inlet guide 8 and the outlet guide 9 in the case of the embodiment according to FIGS. 10 and 11 and in the embodiment according to FIG. Can be rotated with respect to 1), so that on the surface of the ring 2 there is an angular range covered by the yarn 7 according to the rotation range 15. Thus, an area in which contact between the yarn 7 and the ridge 2 is possible is made.

Thus, the yarn 7 is allowed to travel along any desired point as a function of the respective rotational positions of the guides 8 and 9 and the heating tube 1 within a predetermined angle range.

A feature according to FIG. 9 is the peripheral shape up to the rings 2.1 and 2.2 and also to the ring 2.3 provided as a guide. The ridge has a width in the axial direction that increases along the circumferential direction, and the narrowest points are located on a line that is not exactly located on the mother line and is essentially parallel to the contact line of the yarn 7, as wound in FIG. In practice, this contact line of yarn 7 may vary, in which case it is necessary to select the contact line in response to a normal operating source.

In addition, in FIG. 9, the inlet guide 8 as well as the disc shaped exit guide 9 having the sagittal notch 16 are also rotatable about the axis of the heating body 30. This allows the circumferential oblique path of the heating body to be displaced to a region in which the contact length of the ring 2 has a desired size and the ratio of the contact length large free guide length exists between the ridge portions. Thus, it becomes possible to influence heat transfer and smooth running of the yarns 7. On the other hand, if the contact length is too large, the friction is excessive, which is not desired for the protection of the yarn 7.

The embodiment according to FIGS. 9 and 12 has a ring 2 having a width varying in the circumferential direction over the angular region swept by the yarns 7. This means that the width B of this ring varies depending on the circumferential coordinate u according to the function B (u) which can be determined in each case in advance. In this case the function is linear.

FIG. 12 above is characterized in that the ring 2 has a height H that changes circumferentially in the possible contact range with the yarns 7. This means that height H is a function of circumferential coordinate u and this function is thus represented by H (u).

In the practice according to FIG. 9 the width B of the rings 2.1, 2.2 increases in the circumferential direction, in which the height H of the ring decreases. Thus, as the ring (2.1, 2.2) contact time of the yarn 7 due to the increasing ring width B increases, likewise between the rings 2 due to the simultaneous decreasing spacing between the yarn 7 and the pipe jacket The heat flow to the yarn can be expected to increase even in the non-contact longitudinal direction.

To this end supplementally, FIGS. 10 and 11 show that the ring 2 can have a height that varies circumferentially in the range of angles at which the yarn is swept, even when the width of the ring 2 does not change circumferentially. The opposite is also true. In particular, reference may be made to FIGS. 14 and 18 which will be described later.

Thus it can be reliably stated that these two embodiments of the present invention (rings with varying widths and rings with varying heights) can be used in combination with one another and separately from one another.

The width B of the ring may vary step by step. This means that it increases step by step, for example, from a smaller width to a larger width, at a compartmentally constant and constant circumferential coordinate of width B.

A similar story holds true for the change in ring height (H). This allows some lateral adjustment of the contact area between the yarn and the ring without affecting the heat transfer between the heated surface and the yarn.

In the embodiment according to Figs. 9 to 11, the ring is formed by processing the annular groove in the pipe jacket so that the ring of the present invention, on which the yarn 7 travels, remains.

In the embodiment according to FIGS. 10 and 11, the grooves around the heating and the jacket have different depths, and in the case of FIG. 9, the widths are different.

In operation, heat is transferred from the heating tube 1 to the yarn 7 on the one hand in the contacting zone where the ring 2 forms with the yarn 7.

Furthermore, heat flows to the yarns 7 in the longitudinal region between the rings 2 which the yarns are not in contact with. Since the bottom of the grooved groove between the rings 2 has a distance of up to several millimeters, for example, from about 0.3 mm up to about 5 mm, up to the traveling operator, the heating tube 1 from 300 degrees Celsius to about 800 degrees Celsius. Considering the heating temperature, especially the temperature at the self-cleaning temperature level, it is naturally assumed that effective heat flow occurs in the longitudinal region without contact.

As a result, the heat flow acting on the yarn as a whole is a function of the adjusted four-way geometry with respect to the geometry of the tube, the contact length and the non-contact longitudinal region as well as the ring height, as well as the inlet sag guide for the heating tube 1 ( 8) or the relative adjustment of the exit guide 9. The contact ratio and the height of the ring 2 are thus the decisive parameters for heat transfer, and the contact ratio is understood to be the ratio of the contact length of the yarn in each ring and the noncontact length to the next ring.

Rings differing in height above the circumference can be produced, for example, by forming the rings 2 in a cylindrical shape and eccentrically with respect to the tube axis. However, the rings may be formed elliptical or in some other way.

Variations of such heat transfer are further described below with reference to FIGS. 14 to 18 and 21 degrees.

Thus, the heat flow transmitted can be adjusted very sensitively by moving the four-way around the heating tube 11. Even if only a slight change in the rotational position relative to each other, the heat flow and the obtained sand temperature acting on the yarns 7 as a whole are significantly changed.

The present invention intends to use this recognition in the application of the combustor described below.

It has already been mentioned that the above run along a heating tube in a spiral or spiral path. In an embodiment of a heating tube such as shown in FIGS. 9-11 with rings having a contact width that varies circumferentially and / or a height varying over the length of the heating tube jacket, the ring 2 always follows the saga slope. If it is important to make contact only at the point of contact width or contact height, then successive rings 2 will be circumferentially staggered in terms of helical slopes with respect to their contact width and / or contact height. If it can be adjusted by displacing one of the four guides 8 or 9 of the slope, it will be sufficient to stagger consecutive rings 2 in order in the sense of the average value of the pitch that the spiral slope can be adjusted. Then successive contact widths or contact heights can in turn be approximately the same size.

Instead of a very complicated and unclear drawing example, it is assumed that the rings (2.1, 2.2, 2.3, etc.) successively arranged in Figs. 9 to 11 are staggered in the circumferential direction, respectively by a certain angle size. This angular magnitude corresponds to the average of the adjustable pitch of the saga helix.

However, instead of making a circumferential staggered arrangement of these rings 2, one may also place the rings 2 in order such that points of the same width and / or the same height extend along the busbar of the tube. Such a method allows for the construction of heat transfer over the contact path and / or the height of the ring and thus the length of the track.

All embodiments of the heating body according to the invention allow heating at least one traveling yarn. However, the arrangement of several pairs of inlet guides 8 and outlet guides 9 on the circumference allows the plurality of running yarns to be processed simultaneously. To this end, it is clear that the exit guides 9 are interlaced on the circumference with respect to the inlet guides 8, respectively, in the same view. The development view by FIG. 13 shows an embodiment in which two yarns run at opposite pitches along their spirals.

Next, FIGS. 13A and 13B will be described.

FIG. 13A shows a vertical sectional view of such a heating body, which includes an insulating material 41 surrounding the heating body. FIG. 13B shows a front view of the heating element indicated in the development view, which is viewed from above the longitudinal slot 42 which is the insertion slot of the insulating material.

The insulator 410 is a tubular body surrounding the heating tube 1. The tubular insulator 41 has a longitudinal slot 42 along the busbar, which longitudinal slot is located between the two four-way lines in the circumferential direction. This longitudinal slot has a width of only a few millimeters to prevent heat loss, as is apparent, the insulating material 41 is also blocked by an insulating layer on its front face (not shown in Figure 13a). 13a and 13b are exaggerated, the exit guides 9 are fixed in position and within the slot width, but far from the centered line 40 of this guided position and the longitudinal slot 42. The insulating material 41 as described above is shown in a developed view and is shown by the outline shown by the bold line in FIG.

In any case, the inlet guides 8 can be moved (arrows) from their threading positions indicated by dotted lines in FIG. 13B to their operating positions in opposite directions (arrows).

Thus, the surface portion of the invisible heating element beneath it can be seen by the insulating material 41.

As can be seen from FIG. 13A, the insulating material 41 forms a narrow gap in the circumferential region through which the heating tube 1 or the rings placed thereon and the yarns can move. By moving the two inlet guides 8 in the opposite direction from the threaded position in alignment with the longitudinal slots 42, the yarns 7 run on the circumference of the ring 2 along the helix and the two helixes Have the opposite pitch.

When the exit guide 9 is movable from the threading position aligned with the longitudinal slot 42 to the operating position, it is obvious that the inlet guide 8 is obtained in order to obtain a spiral slope with the desired pitch for each yarn. Should be moved further. It should be noted that both guides 8 and 9 can also be fixedly positioned in a given operating position. This is further established because it is possible to physically replace the exit guide 9 with the traveling groove 43 of the cooling plate 19 shown in FIG. 13b, but in this case, it must be in line with the traveling groove 43. It is necessary. In this case, the traveling driver reached and aspirated by the suction gun for threading is first placed in the inlet guide, and then guided through the longitudinal slot 42, and then in line with the longitudinal slot or longitudinal slot. (42) Sideways pulled into and inserted into a soccer guide located near.

Embodiments have already been described in which the contact ratio and / or the height of the ring are changed in the circumferential direction of the heating tube 1, so that the amount of heat applied can be changed by displacing the dead path in the circumferential direction. In Figures 14, 15, 16, 17 and 18, a functional embodiment of such rings is shown that shows the two yarns being heat treated on the heating plate.

In the embodiment of FIG. 14, the rings 2 are eccentric with respect to the tube axis 17 (FIG. 13a), and the eccentricity of successive rings in turn is staggered by 180 degrees from each other.

This embodiment has the advantage that the height ratio of the ring at the dead contact point is symmetrical and changed in the same way by the same direction relative rotation between the heating tube 1 and the four runways 7.1 and 7.2.

15 to 17 degrees show an embodiment with two four heating zones 25 in the heating body 1.

In each of the four heating zones 25a and 25b a plurality of axially sequential rings 2 are arranged on the heating surface along the four running directions, the height of the rings 2 being at least 0.1 millimeters, but not less than five, at the heating surface. It protrudes by less than a millimeter.

As a result, the height of the ring 2 is about 5 millimeters or less above the heated surface, so that the advantages of the heating body according to the invention, in particular self-cleaning and sensitive controllability, can be fully utilized.

The width B of the ring 2 changes in the circumferential direction. It can be clearly stated that this alone or when combined with the height H of the ring 2 which changes in the circumferential direction can be an inventive advantage. In this case, the height should be reduced with increasing width if it is to enhance heating effect by displacing the four-way route in a larger range.

In the case of the embodiment of Fig. 15, the width increases from the bus bar of the heating tube 1 toward both sides. Therefore, when one yarn (7) runs on both sides of the bus bar, the relative rotation of these four runways and pipes in the same direction results in the opposite change of the heating effect for the two yarns. This may be hopeful. When it is not desired, the inlet and outlet guides 8 and 9 respectively associated with one four-way run are provided to be adjusted separately from the guides 8 and 9 of the other four-way in the circumferential direction of the heating tube 1. To this end, the guides 8 and 9 can be placed on the guide guide 26 which can be rotated about the axis of the heating tube.

As shown in FIG. 16, only one of the four heating zones is arranged with a ring (2) whose width (B) changes in the circumferential direction and the height (H) changes similarly to the above description. In this case, it may be meaningful to make the ring width B and the ring height H constant.

In this case, for example, it is not necessary to provide relative control between the inlet guide 8 or the outlet guide 9 and the heating tube 1 for the left four-way route.

However, for the other (right) four-way run, relative adjustment between the heating tube 1 and the four-way run is possible, for example, by adjusting the associated guides 8 and 9. This control allows the heating action on one yarn to be adapted to the heating action on another yarn.

In all embodiments of the present invention in which relative movement occurs between the heating tube 1 and the four runway, this relative adjustment is possible on the one hand in the circumferential direction by the rotation of the heating tube in the case of the fixed four runway. For flammable crimps this is a more obvious solution because the four-way is fixed by the geometry of the machine and the change of the four-way has a negative effect on the sine length and other process parameters. In other cases, however, an inlet guide 8 or an outlet guide 9 that can move synchronously to the four-way route is allocated, and the guides 8 or 9 are for example the ends of the rotary guide lever 26. It is possible to make relative adjustment by having it arranged in the part. However, the heating action can be changed by the relative control of the sagade, that is, by the change of the slope of the slope.

In order to achieve synchronous rotation, the guide guides 26 can be connected via a transmission. By practice according to FIG. 16, the two yarns running over one heating body may be equal to each other or may be deliberately adjusted to be different. For the case of the implementation by FIG. 17, reference may be made to the descriptions of FIGS. 15 and 16. The feature of this embodiment is that the ring height above the jacket of the heating tube 1 is constant while the ring width only increases circumferentially with respect to the right four-way. With respect to the left four-way run, the ring width B increases in the circumferential direction and in the other direction in the opposite direction, while the ring height H decreases. In this embodiment, by adjusting the inlet guide 8 and the outlet guide 9 correspondingly, the right four-way and the left four-way roads are moved in the direction in which the spiral or the spirals extend in parallel in the direction in which the inclination of the spiral changes. It is useful to displace them independently of one another. Moreover, this holds true for all embodiments in which the ring width or ring height varies. By moving the four-way circumferentially, the heating action changes differently. Thus, not only can the heating action be changed absolutely for each four runway, but it is also possible to make a relative change in the heating action and thus adapt it correspondingly to the target temperature to be achieved.

18a to 18e schematically show an axial view (plan view) of a heating tube with two rings 2 whose height varies circumferentially with respect to the jacket of the heating tube.

This was achieved by allowing the ring to have an elliptical shape and to be arranged concentrically in the cylindrical heating tube 1 in the case of the implementation according to Figs. 18A to 18C. Here the two firing zones 25a, 25b are arranged radially opposite, in which case the inlet guide 8 or the outlet guide 9 is then used so that the yarns 7 run at the points with the same operating conditions. It is possible to arrange on the guide lever 26. The overall condition for this is that both yarns 7 are guided in a spiral in the same direction. In this case, due to the synchronous movement of both the inlet guide (8) or the outlet guide (9) will change the operating conditions affected by the two-way path and the four paths. This holds true for the synchronous movement of the two exit guides 9. The pair of inlet sag 8 and the pair of outlet sag 9 can thus be located on the same lever which can be rotated around the axis of the heating tube, respectively.

The four-way marked in Figure 18c is particularly advantageous. Here, each yarn 7 runs inside a quadrant that is entirely sandwiched between the major and minor axes of the ellipse.

In the above quadrant, it will be appreciated that the heat transfer from the heating tube 1 to the yarn 7 increases continuously over the entire length between the inlet guide 8 and the outlet guide 9. Because there is a large gap between the yarn 7 in the inlet guide 8 and the heating tube 1 when the yarn runs in this quadrant, which decreases as it runs toward the exit guide guide 9. This is because it has a minimum in (9).

Thus, the distribution of heat transfer over the entire length of the yarn running between the inlet guide 8 and the football guide 9 is adjustable in all of these implementations in the same way as the total heat delivered.

Between the minimum spacing of the short axis of the ellipse and the maximum spacing of the long axis of the ellipse in the elliptical implementation of the ring according to FIGS. 18a to 18c and the movement of the four-way in the selected quadrant with the inclination of the selected diagonal direction. The full range of rings 2 of can be used for this adjustment.

Therefore, an optimum (maximum) heat transfer can be expected at a constant relative position between the inlet guide 8 and the outlet guide 9 within this possible four-contact line, in which case the continuous increase in four directions from the pipe to the yarn Heat transfer occurs.

As a result, in this embodiment, the two opposing points of the ellipse are understood to be the two circumferential ranges of the ellipses facing each other in diameter with respect to the intersection point of the long axis and the short axis of the ellipse.

Embodiments according to FIGS. 18d and 18e have rings 2 arranged eccentrically. The ring 2 is circular, and the center of the ring 2 is the center of gravity from the center of the heating tube I. 27) are staggered.

The eccentricities of all rings are in this case elevated on the same radial side of the axis in the common axial plane of the heating tube 1.

The inlet guide 8 and the outlet guide 9 for each yarn are arranged separately on one guide guide lever 26, and the ring 2 in the direction acting the same with respect to the heated yarn 7 is provided. It can be rotated circumferentially about the center of.

Thus both companies (7.1 and 7.2) are guided along the four-way route whose spirals are opposite pitches.

In this way, in the case of the synchronous control of only the inlet guides 8 or only the outlet guides 9, the heat flow to both yarns can be affected in the same way, ie over the length of the exposure exposed to the heating tube 1. The distribution of heat flow and the total heat can be affected as well.

It is possible to achieve the optimum effect of heat transfer from the heating tube 1 to the jute yarn 7 in this manner, as shown in addition to FIG. 18e showing the state rotated by 180 degrees according to FIG. 18d thereon.

In the case of FIG. 18D, the inlet flowing in the region of the inlet guide 8 has a relatively large distance to the heating surface of the heating tube 1, and the outflowing yarn has a relatively small gap therein, but in the case of FIG. Is exactly the opposite.

Here, the inlet sand is heated relatively strongly in the region of the inlet guide 8 because there is a very small distance from the heating surface of the saga heating tube 1 while the sand flowing out of the region of the soccer guide 9 is from the heating surface. This is because they have a relatively large gap.

By the practice of Figs. 9-19, the sensitive thermal action on the yarn which is sensitively adapted to the respective yarn parameters can be controlled. Thus, in the case of fine fineness, the heating tube 1 and the ridge part can always operate at midnight temperature by fitting the contact ratio and / or the spacing to the yarn. It is also possible to heat the various yarns 7 without damage.

In the present invention, mainly, if the relative position between the traveling yarn 7 and the heated surface is adjusted accordingly, it is possible to simultaneously treat filament yarns having different fineness of 20 denier or 40 denier with the same heating body.

All these embodiments thus allow different heat flow and target temperatures to be realized by only selecting the relative position between the four-way and the heating body without changing or adjusting the heating surface temperature by one and the same heating body. It is thus also possible to adapt to the respective thicknesses (fineness, denier) and material (polyester, nylon) or to the quality of the different yarns desired.

So far the embodiments of the invention have been described where the ring 2 is fitted as a separate component to the heating tube or is fixedly connected to the heating tube and forms part of the heating tube. Referring to Figures 19-22, an embodiment is described in which the ring 2 forms part of an independent component as a whole.

For all the embodiments of FIGS. 19 to 22, the following holds true: A sleeve 33 is arranged on the cylindrical heating tube 1. The sleeve 33 is made of a thin plate and the thin plate is closely fitted to the contour of the heating tube in at least the four-runway region and the four-heating region. It may be a segment of the cylinder (part) that is secured onto the heating tube with a spring or tape. In the embodiment of Figs. 19 to 22, the sleeve is a cylindrical tube corresponding to the outer diameter of the heating tube with a narrow tolerance on its inner diameter. The sleeve has a ring 2 according to the invention in the axial direction. The embodiments illustrated according to FIGS. 19 to 22 are different from each other in the structure of the ring. The sleeve is fixed in the axial direction by the guide 45. However, the sleeve 33 can be rotated. To this end, the sleeve 33 has a hole 44 in its circumference and can rotate the glee by inserting a suitable tool therein. However, in the case of the sleeve of FIG. 19 it is also possible to provide a permanent rotary drive.

In the embodiment of FIG. 19 the sleeve is raised outward at least in the region of the four-way in several perpendicular planes. Such ridges can be achieved, for example, by rolling and / or indenting the tube in the axial direction. Thereby a number of raised rings 2 are formed around. One or several riders may drive over the circumference.

This practice has particular advantages when anticipating severe contamination of the heating body. In this case it is possible to rotate the symmetrical sleeve over the circumference successively and slowly over time by hand or by an unmarked drive. The yarns 7 thereby continue to sediment formed on the rings 2. This significantly extends the time interval for the heating element to be cleaned. Contaminants suspended by yarn (7) are not important for the quality of the yarn.

In the embodiment according to FIGS. 20 and 21, the sleeve is equipped with a ring 2 by allowing a plurality of recesses 34 to be formed in the thin plate of the sleeve along the desired four-way path. Therefore, in the case of the recessed part 34, it is a hole formed in the thin plate. This implementation is shown in FIG. 20 in an exploded view roughly corresponding to FIGS. 13A and 13B. As such, you can refer to the explanation there. However, in the case of FIGS. 13A and 13B, the ring 2 is part of the heating tube, while in the case of FIG. 20, the ring 2 is formed by the above-described recess 34. As shown in FIG. The recess 34 extends over some circumference of the sleeve. The recesses 34, which are successive in axial direction, are staggered in the circumferential direction of the sleeve by an angle along the intended central slope. The recessed portions 34 are rectangular, and the circumferential long sides of the rectangular recesses lie in the vertical plane, respectively. As a result, a ridge-shaped ring segment acts as a ring 2 in the sense of the present invention between neighboring recesses 34.

In the case of the embodiment according to FIG. 20 two rows of sequential recesses 34 arranged alternately symmetrically in opposite axial directions with respect to the centerline 40 are arranged, with associated inlet guides 8 and outlet guides 9, respectively. Two yarns may be guided over the blemish or ring for. The circumferential length of the recess is chosen to be the size that the desired four-way route can be adjusted.

In the embodiment of the present invention shown in FIGS. 21A and 21B, the sleeve 33 is formed in a hollow cylindrical shape and is disposed on the heating tube 1 while being cylindrical, and the inner diameter of the quasi-park is narrow in tolerance to the outer diameter of the heating tube. It is equivalent to. In the cylinder, hereinafter the sleeve 33 is fixed to the heating tube 1 so as not to move in the axial direction, and can be rotated on this tube, and in some cases, the rotational movement is to disengage the blocking part not shown. Depends. In the example of FIG. 21B, two yarns run on opposite sides along the sleeve. The associated inlet guide 8 and outlet guide 9 are not shown here so as not to impair clarity. Thus, the yarns are not shown spirally but simply schematically and axially during operation. However, the foregoing has already been applied to the guidance of the company. Therefore, reference may be made to the description of the embodiment according to FIG. 20 in particular.

In contrast, the embodiment according to FIGS. 21A and 21B has the following characteristics: The recessed portions 34 are arranged in rows parallel to the axes of the heating tubes 1, and ring segments 37 of the same width therebetween. To form. The ring segment 37 serves as a ridge for guiding one yarn 7 and its axial width is the same. The fact that the sleeve 33 can be rotated over the heating tube 1 offers the possibility of running the yarn 7 to a clean position in the circumferentially extending area of the ring segment 37 and thereby autonomous according to the above temperature. The self-cleaning effect of the ridge portion present in the is further enhanced. A row of concave portions 34 'of the same shape is located in the four-way line for the second yarn 7' on the radially opposite side of the recess 34.

In the lateral circumferential direction of the row of rectangular recesses 34 there is an additional row of recesses 35, which are shown here as trapezoidal. Between these recesses 35, wedge-shaped ring segments, denoted by 38, are formed here. On the radially opposite side of this row there is an identical arrangement of trapezoidal recesses 35 'or wedge shaped ring segments 38' for the second yarn. Thus, it is possible to change the length of the heating surface brought into contact with the yarns 7 simply by rotating the sleeve 33 over the heating plate 1.

In the lateral circumferential direction of the row of trapezoidal recesses there are further rows of recesses 36 arranged one after the other. The recess, however, is relatively narrow in the axial direction but leaves a wide ring segment 39 therebetween, which provides a large contact area to the yarn 7 as a ridge on which the yarn runs. Also in the case of the recess 36, a row of radially opposed recesses 36 ′ is provided here with a corresponding ring segment 39 ′, forming a second four-way run.

In Fig. 21A, the sleeve is enlarged as a developed view.

The recesses in each row are the same shape and are arranged at equal intervals. Between the rows is a ring segment extending in the circumferential direction. The ridge portions remaining between the rows of grooves in the circumferential direction of the sleeve 33 are important for the robust construction of the sleeve but in addition only affect the uniform heat distribution.

The sleeve jacket has a thickness of 0.1 mm (preferably 0.3 mm) to 5 mm, preferably 0.5 mm to 3 mm. Thus, even in this embodiment, the radial spacing between the jacket surface of the heating tube 1 and the surface of the ring segment is further equivalent to the size of the above-mentioned ring height, which is in the above-mentioned preferred range, that is, 0.1 mm (more preferably 0.3 mm). ) To 5 mm, preferably 0.5 to 3 mm.

The sleeve 33 may have other shapes of recesses that satisfy the operating conditions and meet other desired operating conditions.

The sleeve 33 is a low cost component that can be easily assembled and disassembled and replaced. The shape of the recesses 34, 35, 36 and thus the structure of the rings or ring segments 37, 38, 39 is not limited within the structure of the sleeve 33.

Therefore, in this embodiment, the structure of the glee 33 has the contact ratio (the width of the ring segment in the four running directions / the width of the recessed part), and the number and distribution of the rings for each use (dead spot, four speeds). It is a special advantage that it can be adapted to the dead stock material, target temperature, twist size, etc.).

Embodiments of the invention according to FIGS. 22A and 22B have a common feature that the sleeve with the guiding ridge portion or ring 2 consists of cylindrical sections 33a, 33b.

Sections that are successive in axial direction are arranged to fit within each other telescopically in the two embodiments. To this end, two successive sections are opposed with such sections having an outer diameter of one section 33b corresponding to a substantially narrow tolerance with an inner diameter of another section 33a. Sections are fitted on the heating tube (1).

In the case of the embodiment according to Fig. 22a, the sections consist of a large diameter axial section 33a and a small outer diameter axial section 33b, the latter corresponding to the inner diameter of a large outer diameter axial section 33a. do. Appropriately, threads G are excavated on the inner jacket surface of the axial section 33a having a large outer diameter and the outer jacket surface of the axial section 33b having a small outer diameter, respectively, thereby providing respective tube sections 1. ') Are connected to each other. In some cases, the screw connection can be fixed by the nut K, thereby allowing the positions of the sections to be precisely adjusted to each other.

There is a ring 2 outside the section 33a having a large outer diameter. The embodiment illustrated in FIG. 22B differs from that of FIG. 22A in that successive sections in turn have small diameters and large diameters. The outer diameter of the inner section is the same as the inner diameter of the outer section. The sections are screwed together with the outer or the outer thread G and, in some cases, fixed with each other in place by a nut K. In the larger section there is a ring 2 which acts on the jacket surface, which is shown to increase in width in the longitudinal direction of the sleeve.

In addition, the description about the remaining embodiment is applied as it is to this embodiment of the heating body and its guide ring 2. In particular, the ring 2 can be configured according to the embodiment of FIGS. 9 to 12 described above.

The heating body according to the present invention is preferably used in a combustible crimping machine. Such flammable crimps are described, for example, in DE-PS 37 19 050, with a plurality of feed bales from which the yarns 7 are drawn out, a heating device 13 through which the yarns are guided, and a cooling device through which each yarn 7 is guided. , Comprising a combustor 20 where each yarn 7 is twisted temporarily, and also an inlet and outlet supply device 18, 21 for discharging the yarn 7 from the feed bale or from the combustor 20. do. Subsequently, each yarn 7 is wound on a wound bundle. The whole heating body according to the present invention can be used in particular as a heater disposed in the combustion zone.

The heating body is installed in the combustor, and the feeding device 18 is installed in front of the heating body 13, and the cooling zone, in particular the cooling rail 19, the friction combustor 20 and the feeding device 21 are installed behind. It is.

23 and 24 thereon show that the inlet guide 8 and the outlet guide 9 are adjustable in the circumferential direction of the heating body relatively or synchronously with each other. The guide is controlled by the stepping motor 23. Alternatively, the heating tube 1 can be rotated. The heating tube 1 has a ring 2, which is constructed according to FIGS. 9 to 12 degrees. Alternatively, the heating tube 1 may be surrounded by the sleeve 33 according to FIG. 20 or 21 degrees. In either case, the structure of the ring is such that the contact ratio and / or the height of the ring on the heating surface varies in the circumferential direction with the same or different degrees for all rings.

In the case of the combustible crimp according to FIG. 23, the inlet guide 8 and the outlet guide 9 are rotated by the stepping motor 23 as a function of the dead temperature measured at the outlet end of the heating body.

To this end, a temperature sensor 22 disposed at the outlet region of the heating tube 1 is used, which generates an output signal and the stepping motor 23 is activated by the signal to operate the inlet guide 8 and The exit guide 9 is moved as a function of temperature.

It can be clearly understood that the measurement signal of the temperature sensor 22 can also overlap here with the dead force signal generated by the tension measuring device 24 under the heating body.

Alternatively, the implementation according to FIG. 24 may be selected.

In the case of this combustible crimp, the dead force is measured by the tension measuring device 24 below the friction combustor 20. The stepping motor, which operates the inlet guide 8 and the outlet guide 9, is controlled by the output signal of the tension measuring device 24 and is adjusted and moved in the circumferential direction of the heating tube. It has been found that the clamping force is a measure of all the product parameters that make up the quality of the crimped yarn. The movement of the four runways from the circumference of the heating tube 1 to the heat transfer and to the target temperature of the yarn 7 is permitted to be achieved within the limits in which the dead force downstream of the friction combustor 20 is kept constant. . If this limit is exceeded, other process parameters will have to be readjusted or calibrated. As for the embodiment according to FIGS. 23 and 24 degrees, the combustible crimping machine equipped with the heater according to the present invention can then be controlled so that the effective heat transfer from the heating body to the yarn is extremely sensitive in terms of process optimization, and furthermore, This provides the advantage that very precise control or regulation can be done so that optimum yarn quality can be achieved over the entire four-way length.

Claims (30)

A heating body for heating a running thermoplastic yarn, comprising: a heating tube (1) having both ends, the outer surface having a curved cross section perpendicular to the longitudinal axis of the tube comprises: A heating tube (1) defining a heating surface, a mechanism (6) for heating the outer surface of the tube (1), and at least partially extending around the circumference of the tube (1), mounted on the outer surface and having an outer diameter A plurality of ring segments (2,37 to 39) defining the bridging portions having the four guides (8,9) mounted at each of the ends of the tube (1), each other in the circumferential direction of the tube (1). Thermoplastic, running spirally along the tube 1 in cooperation with each other such that the thermoplastic yarns 7 do not contact the outer surface of the tube 1 but contact the outer ridge portion of the ring segment at an outside diameter. Is composed of four guides (8,9) Heating body. The heating element according to claim 1, wherein the ring segment (2) consists of a spiral bead that spirally surrounds the tube (1). 2. The outer surface of the tube according to claim 1, wherein a plurality of axially spaced recesses (4) extending at least partly in the circumference of the tube (1) are formed, and between successive recesses The outer surface defines the ring segment (2) which supports the thermoplastic yarn on the outer surface. 4. Heating element according to claim 3, wherein each of the recesses (4) is about 0.1 mm to about 5 mm deep. The heating element according to claim 1, wherein the radial thickness of each of the ring segments (2) is about 0.1 mm to about 5 mm. 2. The outer surface of the tube (1) according to claim 1, wherein the outer ring segment (2) is threaded and the ring segment (2) consists of a crimped ring having a threaded inner surface and the inner surface of the crimped ring is the tube (1). A heating element, wherein the heating element is engaged with the outer surface of the screw so as to be screwed. A ring slot (2) according to claim 1, wherein each of said ring segments (2) is formed with radial slots (5) extending from the inner circumference of said ring segment (2) to an outer circumference, each slot (5) being at least of the tube Slots 5 of adjacent ring segments having a width equal to the diameter and spaced in the axial direction are staggered at an angle to the circumference of the tube by a predetermined amount corresponding to the spiral angle of the running thermoplastic yarn 7. Characterized in that the heating element. 8. The ring segment (2) according to claim 7, wherein each of said ring segments (2) consists of a front side and a back side, and at least a plurality of said ring segments (2) are formed at least in part with an axial recess (4) formed on a rear side extending therethrough; On the rear side of the adjacent ring segment 2, each of the pins 3, axially spaced adjacent ring segments 2, has pins 3 extending axially outward from the front side that engage with the axial recesses. The ring segment (2) is staggered relative to the radial slot (5) at an angle to the circumferential periphery of the tube so that the slot is substantially at the helix corresponding to the helix angle of the running thermoplastic yarn (7). Is a heating element which is characterized in that it is spaced apart in the axial direction by the pin (3). 9. The ring segment 2 according to claim 8, wherein each of the ring segments 2 has a plurality of axially recessed recesses 4 at the rear side which at least partially extend therethrough and form part of a concentric circle with the tube 1. Each of the pins 3 engages with one of the recesses 4 at the rear side of the adjacent ring segment 2, the tube 1 by a predetermined amount corresponding to the helix angle of the running thermoplastic yarn 7. Heating element characterized in that the staggered at an angle in the circumference of the). The method according to claim 7, wherein the sliding segment is slidably engaged with the side of the slot of each ring segment 2 and elastically engaged with the outer surface of the tube 1, thereby fixing the ring segment 2 to the tube 1. Heating element further comprises a manufactured spring clip (10). 2. A ring sleeve according to claim 1, further comprising a plate-shaped sleeve (33) extending over the outer surface to coincide with the outer surface of said tube (1), said sleeve (33) being rotatable around the circumference of said tube and said ring segment (2,37-39) is a heating element, characterized in that it comprises a ridge spaced apart in the axial direction from the sleeve (33). 12. Heating element according to claim 11, characterized in that the sleeve (33) consists of a plurality of adjustable interconnect sections (33a, 33b) which are telescopically engaged. 2. A sleeve according to claim 1, further comprising a plate-shaped sleeve (33) extending over the outer surface to coincide with the outer surface of said tube (1), wherein said sleeve (33) is at least partially at the circumference of said tube (1). A plurality of extending axially spaced recesses 34 to 36 are formed, wherein portions of the sleeve 33 between successive recesses 34 to 36 are designed to support the thermoplastic yarn 7 on a heating surface. The heating body which defines ring segments 37-39. The heating element according to claim 1, wherein at least one of the sag guides (8,9) is made for displacement relative to the other sag guides in the circumferential direction of the tube (1). 2. The heating element according to claim 1, wherein the heating body further comprises a plurality of corresponding guides (8, 9) at each end of both ends of the tube (1), each said guide being in cooperation with the opposite guide Characterized in that the thermoplastic yarn guides one of the plurality of thermoplastics spirally along the tube such that it does not contact the outer heating surface of the tube (1) but in contact with the outer ridges of the ring segments (2, 37-39). Heating element. 16. The tube (1) according to claim 15, wherein the guides (8, 9) are spaced apart from the tube (1) in the opposite direction of winding at intervals in which a pair of thermal carriers vary in the circumferential direction of the tube (1). A narrow threading slot 42 positioned to run along the side, having a winding angle of less than 180 degrees, wherein the heating body extends parallel to the longitudinal axis of the tube 1 between the pair of running thermoplastic yarns 7. And an insulating jacket (41) surrounding said pipe (1). 2. The ring segments (2, 37 to 39) of claim 1 define a length in the direction of the longitudinal axis of the tube (1) that varies in the circumferential direction of the tube (1), and the sea guides (8, 9) At least one of the lengths of the thermoplastic yarns in contact with the ring segment and the length of the thermoplastic yarns between the respective ring segments (2.37 to 39) and the axially spaced adjacent ring segments (2, 37 to 39) A heating element, which is manufactured for movement relative to the tube in the direction of the circumference of the tube so that the contact ratio defined as the ratio of the liver is adjustable. 2. The ring segment (2), (37) to (39) according to claim 1, wherein the ring segments (2, 37 to 39) define a radial height perpendicular to the longitudinal axis of the tube (1) that varies in the circumferential direction of the tube (1). At least one of (8, 9) is a direction in which the outside crosses the direction of the longitudinal axis of the tube (1) such that the distance of the thermoplastic yarn (7) from the heat surface is adjustable in the ring segments (2, 37 to 39). The heating element characterized in that it is manufactured for movement relative to the tube (1). 19. An elliptical portion according to claim 18, wherein the shape of at least a portion of the outer periphery of the ring segments (2, 37-39) is substantially elliptical winged and the center of the ellipse defines an elliptical portion coinciding with the longitudinal axis of the tube (1). The guides 8 and 9 are configured to run a pair of bilateral thermoplastic plastic yarns 7 linearly along the pipe 1, spaced from the pipe 1 at the same inclination angle. Heating body made of. 19. The ring segments 2, 37 and 39 according to claim 18, wherein the shape of at least a portion of the outer sides of the ring segments 2, 37 and 39 is eccentric with the longitudinal axis of the tube 1 and the axially adjacent ring segments 2, 37 and 39 are 180 ° staggered, the guides 8 and 9 are inclined at opposite angles to both sides of the axial plane of the tube 1 in which the centers of the ring segments 2, 37 to 39 are located. And a pair of thermoplastic yarns (7) linearly running along the tube (1) spaced from the heating element. 18. The circumferential direction of the pipe (1) according to claim 17, characterized in that adjacent ring segments (2, 37 to 39) spaced in the axial direction are staggered in the circumferential direction of the pipe (1) along the connecting line of the thermoplastic yarn (7) on the ring segment. Heating body made of. 18. The thermoplastic material according to claim 17, wherein the temperature of at least one thermoplastic yarn (7) of said guides (8, 9) remains substantially constant at the value passed as a result of adjusting the contact ratio. Heating element characterized in that it is made for movement relative to the tube (1) as a function of the temperature of the yarn (7). 19. The method of claim 18, wherein at least one of the guides 8 and 9 has a temperature at which the temperature of the thermoplastic yarns 7 controls the distance of the thermoplastic yarns 7 on the ring segments 2, 37 to 39 from an external heating surface. And as a result a movement relative to the tube (1) as a function of the temperature of the thermoplastic yarn (7) at the outlet end of the heater so as to remain substantially constant at a specified value. 18. The thermoplastic yarn according to claim 17, wherein at least one of the guides (8, 9) is formed at the outlet end of the heating body such that the temperature of the thermoplastic yarn (7) remains substantially constant at a specified value as a result of adjusting the contact ratio. Heating element characterized in that it is manufactured for movement relative to said tube (1) as a function of tension in (7). 19. A value as set forth in claim 18, wherein at least one of the guides (8, 9) is a thermoplastic yarn (7) whose temperature is specified as a result of adjusting the distance of the thermoplastic yarn on the ring segments (2, 37 to 39) from an external heating surface. Heating element characterized in that it is manufactured for movement relative to the tube (1) as a function of the tension of the thermoplastic yarn (7) at the outlet end of the heating element so as to remain substantially constant at. 2. The heating apparatus according to claim 1, wherein the heating body is a feeder device (18) and a cooling plate (19) located upstream of the heating body, a friction combustor (20), and a feeding device (21) located downstream of the heating body. Heating element characterized in that it is installed in a combustible crimping machine comprising a. The heating element according to claim 1, wherein each of said outer ridges of said ring segments (2, 37 to 39) is curved in a cross-sectional view. 2. A heating element according to claim 1, wherein said heating element comprises at least one axially extending heating resistor (6) located inside said heating tube (I). The heating element according to claim 1, wherein the ring segment (2, 37 to 39) is fixed to the heating tube (I) during the heating of the running yarn (7). 30. The spiral guide according to claim 29, wherein at least one of the guides 8, 9 is axially rotatable about the longitudinal axis of the heating tube I, wherein the spiral runway is described above over the entire length of the tube 1. A heating element characterized in that there is no additional guide along the length of the tube to be controlled by the axially rotatable movement of the guide and acting to control the spiral mountain runway.