DD143231A1 - DEVICE FOR SETTING BEADING RINGS ON THE SPREADING POWER DRUM - Google Patents

Abstract

The invention relates to a device for setting Wulstringen on the Spreizaufbautrommel in systems for the construction of Pneumatic tire with dera goal, the labor productivity and the Tire quality, increase. It is an object of the invention, the significantly shorten the technological process of tire building. This object is achieved in that the device has a Carriage, which is movable along the Spreizaufbautrommel and has vertical moors on which longitudinal bars are attached, which are mounted displaceably in the radial direction and on which Gripper groups are attached to the bead rings. Between Gripper groups are for each pair of bead rings reapers arranged radially displaceable during the cutting located outside the spreader assembly cam. The inventive Device used to produce pneumatic tires.

Description

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Device for setting V / ulstrings on the spreading built-up drum

Field of application of the invention

The present invention relates to pneumatic tire building equipment, and more particularly to means for placing 7 / ulstrings on the spreader building drum in pneumatic tire building facilities.

Characteristic of the known technical solutions

Known is a device for setting bead rings, for example, according to the BRD-PS TTr, 1 217 602, which includes a mounted on guides movable trolley with attached thereto end-side uprights, between which gripper groups are mounted for the bead rings.

This device ensures the supply to the Spreisaufbautrommel only a bead ring and its setting on the Spreizaufbautrommel, which is why two of these facilities are used in tire construction on Spreizaufbautrommel pushed from two sides to the Spreizaufbautrommel «This circumstance limits the possibilities of increasing the performance of the tire. In addition, the construction of this device does not allow it to be used in an equilateral construction of several pneumatic tires on a Spreizaufbautautoinoinel, since the simultaneous construction of pneumatic tires, the need arises immediately after setting the bead ring to perform the same side cutting the tube blank in rolls of tape.

It is known that the device for cutting tubes

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in rolls of tape of a predetermined width directly on the spreader building drum of the tire building machine during tire building on automatic flow production lines (eg according to the US-PS Ur 3375151) in which a disc knife occurs as a cutting element, which occurs at high speed rotates and is fed to the Spreizaufbautrommel supplied. Here, the cutting operation in the known devices in the following manner. For Spreizauf construction drum, to which a rubber cord blank is attached, one leads da3 rotating disc knife so that it contacts the blank material, and then either this Spreizaufbautrommel together with the blank in rotation or moves the rotating disc blade to the fixed Spreizaufbautrommel, thereby the blank material is cut along the circular line.

The known devices are complicated in structure, as they are provided with several drives (rotary drive of the disc diameter, drive for supplying the cutting device for Spreizaufbautrommel, drive for feeding the disc diameter to the interface) and devices for covering the disc blade. In addition, in the known devices, the cutting process is extended in time, since the cutting of the blank progressively takes place along the circular line upon rotation of the Spreizaufbaiitrommel »

However, this device for simultaneous cutting of the tube blank in several rolls of tape together with the known device for setting bead rings can not practically use *

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Aim of the invention ;

It is an object of the invention to provide a means for setting bead rings on the spreader drum appropriately so that the process of tire building can be significantly shortened, the equipment is simple in construction, labor productivity is increased, and tire quality is significantly improved can.

Explanation of the essence of the invention

It is an object of the present invention to provide such means for setting bead rings on the spreader assemblies that would allow simultaneous placement on the spreader assembly drum of multiple pairs of bead rings and cutting of the tube blank into individual tape rolls, which would allow considerably shorten the technological process of tire building.

This object is achieved in that in the means for setting bead rings on the Spreizaufbautrommel containing a along the Spreizaufbautrommel reciprocating carriage, which is mounted on guides and has vertical stand, the radially displaceable gripper groups for the bead rings carry, according to the invention between the vertical uprights longitudinal poles are housed, which are mounted slidably mounted on these stands in the radial direction and are attached to which gripper groups for the bead rings, between the gripper groups for each pair of bead rings cutting units are mounted radially displaceable during the Cutting process outside the spreader drum »

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The longitudinal bars provided between the vertical uprights, which are slidably mounted in the radial direction and on which gripper groups for the bead rings are fastened, make it possible to make simultaneous setting (picking and transmission) of several pairs of bead rings according to the number of tires to be built up and simplify them Construction of the device thanks to combination of drives. The arrangement of the cutting units between the gripper groups for each pair of bead rings makes it possible to simplify the construction of the building machine, since the drive for moving the cutting units in the zone of the Spreizaufbautrommel falls away. Thanks to the combination of the cutter with the means for setting bead rings, the overall time for their displacements to and from the spreading drum is shortened, which also increases the work of building the tire. ·

Conveniently, the gripper groups for each pair of bead rings on the longitudinal bars along the Spreizaufbautrommel are adjustable adjustable by sleeves, which offers the possibility of changing the Spreizgröße the Spreizaufbautrommel (for example, when switching to the construction of tires of a different size ) the position of the bead rings, he resort to the new spread quickly adjust.

According to the invention, each gripper on the surface facing the bead ring has an elastic element and is cushioned with respect to the longitudinal bar. This is a safe Pestschling dor bead rings through the gripper

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guaranteed even with an ellipsity of the bead rings.

The invention is further characterized in that the cutting units are mounted on the carriage by means of ring-like Kragstücke and include supporting elements to which knives are mounted, wherein for the radial displacement of Schneidwsrken in the annular Kragstücken radial hats are carried out, in which housed the supporting elements are connected to a drive for the radial displacement thereof.

This makes it possible to carry out the tire construction without withdrawing the means for setting the bead rings on the spreading drum, and ensures an accurate knife feed to the spreading drum and the regulation of the knife position.

Here, the knives are expediently formed arcuate. The total length of the knife is starting the same elected by the condition of covering the Spreizaufbautrommel on the whole circumference in expanded state. This makes it possible to perform the cutting of the tube blank in sand rolls at once over the entire circumferential length of the blank.

According to a further variant of the invention, the knives may be triangular in shape. Their cutting edges are at an angle to the imaginary tangent of the spreading building drum, the knives being mounted to the supporting members by means of resiliently pressed intermediate members carrying rollers located in front of the cutting edges of the knives, causing the tools to become dull

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Excludes blade on the surface of Spreizaufbautrommel at random contact the surface of the Spreizaufbautrommel by the same. In addition, the arrangement of the knives on the sprung intermediate sectors, which have rollers which are in front of the cutting edges of the knives, ensures their work with different diameters of the spread spreading drum and eliminates the dulling of the knives. Thus, the bead ring setting device of the present invention has a simple construction, assures picking up and transfer to the spreading building drum simultaneously of plural pairs of bead rings according to the number of tires to be built up, assures the union of the bead stringing operations and cutting of the tube blank without unnecessary displacements thereof Mechanisms that increase performance in tire building and overall simplify the construction of the body-builders, as well as reduce the number of equipment needed to build the tire.

embodiment

Hereinafter, an embodiment of the inventive device for setting Wülstringen on the Spreizaufbautrommel will be described in detail with reference to the accompanying drawings. In the accompanying drawing show:

Pig «1: schematic representation of the means for setting Wulstr" ingen, overall view;

Pig. 2: Arrangement of grippers on the longitudinal bar, in

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enlarged scale; Pig. 3: section III-III after Pig. 1;

Pig. 4: design variant of the cutting unit with partial breakout;

Pig. 5 and 6: cutting the tube blank through the

Cutting unit, designed according to Pig · 4;

Pig. 7 - 11 ί individual operations when placing the hollow rings and cutting the tube blank in rolls of tape.

The means for setting bead rings 41 on the spreading building drum 3 includes a carriage 1 which is reciprocally movable by guides 2 along a spreading building drum 3 by means of any drive not shown in Pig. On the carriage 1, vertical uprights 4 are mounted on which longitudinal bars 5 are mounted, which are displaceably mounted in the radial direction, for example by means of pneumatic cylinders 6, the housings of the pneumatic cylinders 6 being fastened to the vertical uprights 4 (Pig the longitudinal bars 5 are connected. The ends of the longitudinal rods 5 are located in radial guide grooves 8 of the vertical uprights 4. Groups of grippers 9 are fastened to the longitudinal rods 5 for one pair of transverse rings 41, with at least two grippers 9 being used for each tfulstring 41. each of which represents a plate in the form of a segment, as shown in Fig. 3. In one group, the grippers 9 (Pig 2) for each bead ring 41 are shown in FIG.

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a distance L, which corresponds to the distance between the bead grooves, which are determined for the bead rings 41 and executed on the Spreizaufbautrommel 3. Each gripper 9 is housed in a sleeve-10 which is mounted on the longitudinal rod 5 in the longitudinal groove 11.

In each gripper 9, a recess 12 is formed, in which a spring 13 is housed, which is supported against the bottom of the sleeve 10, whereby the gripper 9 is cushioned with respect to the longitudinal rod 5. In this case, an elastic element 14 is attached to the surface of the gripper 9, which is swept to the bead ring 41, which consists for example of rubber.

For the adjustment displacements of each pair of grippers 9 along the spreader building drum 5, d. H. for the .Veränderung of the distance L between the grippers 9, outside of the sleeves 10 pin bolts 15 and 16 are rigidly fastened respectively with right-handed and left-hand thread, which are connected to each other by a nut 17.

Between the groups of grippers 9 for each pair of bead rings 41, there are mounted on the carriage 1, by means of vertical ring-like cantilevers 18, chisels 19 which are displaceable in the radial direction. Pig. 3) "and knife 21, which are mounted on the supporting elements 20. ·

In this case, for the radial displacement of the cutting units (Pig. 1) in the ring-like Kragstücken 18 radial $ uten 22 executed j in which the supporting elements 20 underweight

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are introduced, wherein the supporting elements 20 are connected to a drive for the radial displacement of the cutting units 19. As a drive for radial displacement of cutting units 19, a power cylinder 23 (Fig. 1) can be used, which is attached to the carriage 1 and the piston rod is connected via a rod 24 with rings 25 and the piston rod is connected via a rod 24 with rings 25 which are arranged in the guides of the ring-like Kragstücke 18. In this case, 25 inclined grooves 26 (Fig. 3) are performed in each ring, the number of which is determined by the number of cutting units 19 which lie in a sectional plane between .jedem pair of bead rings 41. In each groove 2o a pin 27 is housed, which is fixed to the supporting element 20; upon rotation of the ring 25, the pin 27, by sliding in the groove 2β, radial displacement of the supporting element 20 with the knife 21 from.

The knives 21 may have different shapes, for example arcuate, as shown in Fig. 3, and their cutting edge 28 is equidistant from the surface of the spreading building drum 3 in a spread state, the total length of the cutting edges 28 of the knives 21 of the cutting units 19? which are arranged in a plane, starting from the condition of embracing the expansion aufaufrosmelmel 3 on the whole circumference of the same is selected in the expanded state. The knives 21 may be triangular in shape, as shown in FIG. 4, with their cutting edges 29 (FIG. 5) at an angle to the imaginary tangent IT of the expanding structure 3. , According to this form of the knife 21 (Fig »4) 25 pins 30 are designed to den'Ringen, and designed as sectors in 6s

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formed supporting elements 20 inclined grooves 31 are incorporated, in which pins 30 are housed, which provide the radial displacement of the supporting elements 20. In this case, two radial grooves 32 are executed in each spring-supporting element 20, in which rods 33 are housed, which are attached to the annular Kragstücken 18 and represent guides in radial displacement of the supporting elements 20.

The triangular knives 21 are mounted on the supporting elements 20 by means of intermediate sectors 34 which are elastically pressed against the supporting elements 20 by springs 35 which are attached to the bars 36 which project through the supporting elements 20. The intermediate sectors 34 have projections on which rollers 37 are fixed, which are located in front of the cutting edges 29 of the blades 21. During the cutting operation, the rollers 37 come into contact with the surface of the spreading building drum 3 by pressing the tube blank 38 (FIGS. 5, 6) against the surface of the spreading building drum 3.

In the ring-like Kragstücken 18 (Fig. 4) and rings 25 Muten 39 are incorporated, through which the longitudinal rods 5 (not shown in Fig. 4) are guided.

The work of the device according to the invention is as follows:

On the spreading building drum 3 disposed in the vicinity of the means for setting ϊ / ulstrings 41 coaxially therewith (as shown in Fig. 7), a blank pipe 38 of rubber cord material is formed in a known manner. At the same time it will be in the facility

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for setting bead rings 41 (shown schematically in Pig. 7-11) along the axis thereof, a sector-expanding mandrel 40 of known construction is inserted with bead rings 41 attached thereto, which are arranged in the plane of the grippers 9. Thereafter, the air cylinder 6 are put into action, the piston rods, the longitudinal bars 5 with the grippers 9 in the radial direction, d. H. on the sector expanding mandrel 40 carrying bead rings 41, after which the grippers 9 clamp the bead rings 41 (Pig. 8). Here, the elastic members 14 include the bead ring 41 on the outer surface thereof and prevent the axial displacement thereof. Thereafter, the sector spreading mandrel 40 is led out of the device. Then the carriage 1 is moved over the guide 2 to the Spreizaufbautrommel 3 (Fig. 9), pushed onto this and adjusted so that the bead rings 41 come to rest over the annular drum grooves (the Uuten are not shown in Fig.) «

Thereafter, the power cylinders 23 (Fig. 1) are turned on, and by means of a rotation of the rings 25 v / earth the cutting units 19 are displaced in the direction of Spreizaufbautrommel 3. After the displacement of the knives 21, the spreading of the Sprela building drum 3 takes place (FIG. 10), during the spreading the bead rings 41 are fixed in the annular drum grooves, and the cutting edges of the knives 21 contact the pipe blank 38. Thereafter, the longitudinal bars are produced by means of the power cylinders 6 5 discharged together with the grippers 9 of the Spreizaufbautrommel 3 in the starting position. Then, upon rotation of the spreading building drum 3, the knives 21, by coming into contact with the pipe blank 38, cut it into tape rolls 42. In this case, if blade-shaped knives 21 according to FIG

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are the cutting of the tube blank 38 at a slight angle during rotation of the Spreizaufbautrommel. Are in the device, the triangular blade 21 (Pig * 4) applied, the cutting of the tube blank 38 is done, as in Pig. 5 and 6, d. The knives are pressed into the tube blank 38 during spreading of the spreading construction drum 3, and as the spreading construction drum 3 rotates, the cutting edges 29 of the knives 21 cut the tube blank 38 into tape rolls 42.

Tray cutting the tube blank 38 in rolls of tape 42, the cutting units 19 are removed by means of the power cylinder of Spreizaufbautrommel 3 and returned to the starting position (Pig * 11). Thereafter, the entire device is removed from the spreading building drum 3, on which the tire structure is made by any known method, from the spreading building drum 3.

Claims (3)

212 490 12.10.1979 WPB29H / 212 490 55 418 24 Erfinduns: sanapruch A device for setting bead rings on the Spreizauf construction drum containing a along the Spreizaufbautrommel reciprocating carriage mounted on guides and has vertical uprights that carry slidable gripper groups for the bead rings in the radial direction, characterized in that between the vertical uprights (4) longitudinal bars (5) are arranged, which are mounted on these vertical uprights (4) displaceable in the radial direction and to which groups of grippers (9) for the bead rings (41) are fastened, wherein between the groups of grippers (9) for each pair of bead rings (41) cutting units (19) are arranged so as to be radially displaceable, which are located outside the spreader building drum (3) during cutting » 2. Device according to item 1, characterized in that the groups of grippers (9) for each pair of bead rings (41) on the longitudinal rods (5) along the Spreizauf building drum (3) by means of sleeves (10) are adjustably and slidably mounted which are connected by clamping elements * Device according to points 1 and 2, characterized in that each gripper (9) has an elastic element (14) on the surface facing the bead ring (41) and is sprung with respect to the longitudinal bar (5). 4 · Device according to point 1, characterized in that the cutting units (19) on the carriage (O by means of ring-like 212 490 : 12.10.1979 '. WPB29H / 212 490 55 418 24 Collar pieces (18) are mounted and enclose bearing elements (20) on which knives (21) are fastened, wherein for the radial displacement of the cutting units (19) in the ring-like cantilevers (18) radial grooves (22) are made, in which the supporting elements (20) are housed, which are connected to a drive for the radial displacement of the same » Device according to point 4, characterized in that the knives (21) are arc-shaped and their total length is selected starting from the condition of embracing the spreading construction drum (3) over the entire circumference of the same in a spread state. Device according to point 4, characterized in that the knives (21) are triangular in shape and their cutting edges (29) under a 7 / inkel to the imaginary
Tangent of the Spreizaufbautrommel (3) lie, the blades (.21) are mounted on the supporting elements (20) by means of these resiliently pressed sectors (34) carrying rollers (37), which in front of the cutting edges (29) Knife (21) are located. 5 sheets of drawings: