CN115559003A - Semi-dull drawn yarn production method and production equipment - Google Patents

Abstract

The invention provides a production method and production equipment of a semi-dull drawn yarn, and relates to the technical field of fiber spinning. The production method and the production equipment of the semi-dull drawn yarn comprise a spinning building, wherein the top and the bottom of the spinning building are respectively and fixedly connected with a top plate and a bottom plate. The invention adds 80-100 mesh metal sand into the filter box, uses nine layers of metal sintered felts which are formed by 15 mu m metal fibers through non-woven spreading, overlapping and high-temperature sintering as filter screens, controls the initial pressure of the components to be 13-15MPa, enables the melt to be uniformly distributed to each spinneret hole, can float the problem of broken ends, applies oil with the crude oil agent concentration of 90 percent, enhances the spinnability and saves energy of products, replaces the porcelain piece on the winding device with a special rotary godet wheel, has small mechanical abrasion when rotating, reduces the friction when the tows pass the godet wheel, prevents the godet wheel from being scalded, enables a plurality of tows to reach the same position and have uniform elongation indexes, and ensures that the subsequent cloth cover is dyed uniformly and has soft hand feeling.

Description

Semi-dull drawn yarn production method and production equipment

technical field

The invention relates to the technical field of fiber spinning, in particular to a production method and equipment for semi-dull drawn yarn.

Background technique

Smooth polyester taffeta fabric has the characteristics of smooth and delicate hand feeling and light texture. It is not easy to wrinkle or shrink during use, and can maintain a good appearance. The fabric is low in production cost, so it has a high cost performance. It is suitable for down jacket liner, umbrella, thermal clothing fabric and various high-grade clothing fabrics. The smooth polyester taffeta fabric is produced from polyester semi-dull drawn yarn.

In the production process of traditional spinning equipment and technology in the production of polyester semi-dull drawn yarn, the problems of floating yarn breakage and uneven dyeing in the subsequent process are still the top few quality problems to be solved. The main reason for floating yarn breakage is The structure of the filter sand and filter screen in the existing spinning assembly is unreasonable, and the initial pressure value is too large or too small, resulting in that the melt cannot be evenly distributed into the spinneret holes, forming weak filaments, causing the floating filaments to break, and the subsequent The uneven dyeing of the road is because in the existing equipment, when the tow passes through the guided porcelain piece to the winding equipment, the friction causes the porcelain piece to become hot, and the tow will be burned by the high temperature on the porcelain piece when the tow passes through the porcelain piece, resulting in low elongation, Low-strength silk seriously affects the dyeing uniformity and cloth comfort of subsequent products.

Smooth polyester taffeta fabric has a large market demand and broad development prospects. During mass production, it is first necessary to solve the quality problems in the raw material production process to improve product quality.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides a semi-dull drawn yarn production method and production equipment, which solves the problems of yarn breakage and after-effects that occur easily in the production process of the traditional spinning equipment and technology in the production of polyester semi-dull drawn yarn. The problem of uneven coloring.

(2) Technical solution

In order to achieve the above object, the present invention is achieved through the following technical solutions: the semi-dull drawn yarn production equipment includes a spinning building, the top and bottom of the spinning building are respectively fixedly connected with a top plate and a bottom plate, and the inner side wall of the spinning building is Fixedly connected with a mounting plate; from back to front, fixedly connected to the polymerization finalizer, melt output pump, melt distributor, booster pump and static mixer on the upper wall of the top plate in sequence, the melt output pump and The outlet end of the polymerization finalizer is fixedly connected to the inlet end of the melt distributor, and the booster pump is fixedly connected to the outlet end of the melt distributor and the inlet end of the static mixer; The end of the static mixer away from the booster pump is fixedly connected to the spinning box through a pipeline; the metering pump, filter box and spinneret are arranged in the spinning box from top to bottom, and the inside of the filter box is A filter sand and a filter screen are arranged in sequence from top to bottom; a windless area isolation cover fixedly connected to the lower wall of the spinning box to form a windless area; a windless area isolation cover fixedly connected to the lower wall of the windless area isolation cover Ring blowing cooler, the ring blowing cooler provides cooling air through the air-conditioning fan; from top to bottom, it is fixedly connected to the front wall of the mounting plate in order to oil the nozzle for oiling the tow and for hot drawing and shaping the tow The drafting device, the oil nozzle and the drafting device are all arranged under the surrounding air cooler; the winding equipment fixedly connected to the upper wall of the bottom plate, the front wall of the winding equipment is sequentially provided with for A guiding wire assembly and a winding drum for collecting the tow, a suspension structure for reducing friction is arranged between the wire guide assembly and the winding device; a suspension structure is arranged between the wire guide assembly and the suspension structure for Limiting structure to prevent the guide wire assembly from moving back and forth.

Preferably, the filter sand is 80-100 mesh metal sand.

Preferably, the filter screen is a nine-layer metal sintered felt made of 15 μm metal fibers through non-woven laying, lamination and high-temperature sintering. The mesh size of the nine-layer metal sintered felt is reduced layer by layer from top to bottom. form distribution.

Preferably, the oil agent used in the oiling nozzle is a crude oil agent with a concentration of more than 90%, and the moisture in the crude oil agent does not exceed 2%.

Preferably, the levitation structure includes a bearing seat, a first magnetic suspension bearing and a second magnetic suspension bearing, the bearing seat is fixedly connected to the front wall of the winding device through a fixing plate, and the first magnetic suspension bearing and the second magnetic suspension bearing are as follows: The back to the front is sequentially arranged on the inner wall of the bearing seat, and the end of the bearing seat away from the fixing plate is clamped with a dust cover.

Preferably, the guide wire assembly includes a rotating shaft and a wire guide wheel, the rotating shaft is suspended on the inner wall of the first magnetic suspension bearing and the second magnetic suspension bearing, and the outer wall of one end of the rotating shaft away from the first magnetic suspension bearing and the second magnetic suspension bearing penetrates through the anti- The dust cover extends to the front of the dust cover, and the godet wheel is fixedly connected to the outer wall of one end of the rotating shaft extending to the front of the dust cover.

Preferably, the position-limiting structure includes a second ring magnet and two sets of first ring magnets, the second ring magnet is fixedly connected to the outer wall of the rotating shaft and is located between the first magnetic suspension bearing and the second magnetic suspension bearing, and the two sets of The first ring magnet is fixedly connected to the inner side wall of the bearing housing through two sets of mounting brackets. Both the first ring magnets of the two groups and the inner wall of the mounting bracket are provided with a relief hole that runs through the front and rear. The relief hole on the inner wall of the mounting bracket penetrates through, and the second ring magnet and the two groups of first ring magnets are all axially magnetized.

Semi-dull drawn yarn production method, the production method comprises the steps of:

S1. The raw materials are reacted in the final polymerization tank to form a melt, and the melt is pumped out to the melt distributor by the melt output pump, distributed through the melt distributor, and then boosted by the booster pump and fully mixed by the static mixer , the mixed melt enters the spinning box for spinning, and the temperature of the spinning box is 290°C;

S2. After the melt enters the spinning box, it is metered by the metering pump, and then enters the filter box to filter impurities and increase the temperature of the melt, and then sprays out through the spinneret to form filaments. The initial pressure in the filter box is controlled at 13-15MPa;

S3. The tow passes through the air-circulating cooler, and the air-conditioning fan provides cooling air to the air-circulating cooler to cool the tow. The temperature of the cooling air is controlled at 21°C, and the pressure of the cooling air is controlled at 25Pa;

S4. The cooled tow is oiled through the oiling nozzle, then thermally drawn and shaped through the drafting device, and finally guided by the godet wheel and then wound and collected by the winding drum.

(3) Beneficial effects

The invention provides a semi-dull drawn yarn production method and production equipment. Has the following beneficial effects:

1. Compared with the existing technology, the semi-dull drawn yarn production method and production equipment are made by adding 80-100 mesh metal sand into the filter box, and using 15μm metal fibers through non-woven laying, lamination and high-temperature sintering The nine-layer metal sintered felt is used as a filter screen, and the initial pressure of the component is controlled at 13-15MPa, so that the melt can be evenly distributed to each spinneret hole, which can avoid the formation of weak filaments caused by single filaments, causing the problem of broken filaments, and It will not cause problems such as shortening the component cycle and increasing production costs due to too high component pressure, and ensures the uniformity of elongation.

2. Compared with the existing technology, the production method and equipment of the semi-dull drawn yarn adopt the crude oil agent concentration of 90% oil agent to oil, on the one hand, the spinnability of the product is enhanced, and on the other hand, the effect of energy saving and environmental protection is achieved , by pre-controlling the moisture in the crude oil agent to not exceed 2%, the temperature of the hot roller when the crude oil is oiled can be set lower than the temperature of the hot roller in the traditional technology, thus achieving the purpose of energy saving.

3. Compared with the prior art, the semi-dull drawing yarn production method and production equipment replace the porcelain part on the winding equipment with a special rotating godet wheel, and rotate the shaft through the first magnetic suspension bearing and the second magnetic suspension bearing. When it is suspended, it has the advantages of low mechanical wear, low noise, long life, no lubrication, no oil pollution, etc., so that the corresponding friction force will be greatly reduced when the tow passes through the godet wheel, and the godet wheel will not be hot. Make the multi-bundle tow reach the uniform elongation index of the same part, and ensure the uniform dyeing and soft hand feeling of the back cloth surface.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention;

Fig. 2 is a partial side view of the connection structure of the roof wall polymerization finalizer, melt output pump, melt distributor, booster pump and static mixer of the present invention;

Fig. 3 is a partial sectional view of the internal structure of the spinning beam of the present invention;

Fig. 4 is a top partial cross-sectional view of the guide wire assembly, the suspension structure and the position-limiting structure of the present invention;

Fig. 5 is a schematic diagram of the connection structure of the mounting bracket and the first ring magnet of the present invention;

Fig. 6 is a schematic diagram of the structure of the dustproof cover of the present invention.

Among them, 1. Spinning floor; 2. Top plate; 3. Bottom plate; 4. Polymerization finalization kettle; 5. Melt output pump; 6. Melt distributor; 7. Booster pump; 8. Static mixer; 9 , spinning box; 10, metering pump; 11, filter box; 12, filter sand; 13, filter screen; 14, spinneret; Oil nozzle; 18. Drafting device; 19. Winding equipment; 20. Bearing seat; 21. Winding drum; 22. Fixed plate; 23. Dust cover; 24. First magnetic suspension bearing; 25. Second magnetic suspension bearing; 26. Rotating shaft; 27. Godet wheel; 28. Mounting bracket; 29. Second ring magnet; 30. First ring magnet; 31. Mounting plate.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example:

As shown in Figures 1 to 6, the embodiment of the present invention provides semi-dull drawn yarn production equipment, including a spinning building 1, the top and bottom of the spinning building 1 are respectively fixedly connected with a top plate 2 and a bottom plate 3, and the inside of the spinning building 1 The wall is fixedly connected with a mounting plate 31; from back to front, the polymerization finalizer 4, the melt output pump 5, the melt distributor 6, the booster pump 7 and the static mixer 8 fixedly connected to the upper wall of the top plate 2 in sequence, the melt The body output pump 5 is fixedly connected to the outlet end of the polymerization finalizer 4 and the inlet end of the melt distributor 6, and the booster pump 7 is fixedly connected to the outlet end of the melt distributor 6 and the inlet end of the static mixer 8; fixedly connected to the top plate 2 The spinning box body 9 on the lower wall, the end of the static mixer 8 away from the booster pump 7 is fixedly connected to the spinning box body 9 through a pipeline;

The metering pump 10, the filter box 11 and the spinneret 14 that are arranged on the inside of the spinning box body 9 successively from top to bottom, the inside of the filter box 11 is provided with filter sand 12 and filter screen 13 successively from top to bottom, and the filter sand 12 is 80-100 mesh metal sand, the filter screen 13 is a nine-layer metal sintered felt made of 15 μm metal fibers through non-woven laying, lamination and high-temperature sintering, and the mesh size of the nine-layer metal sintered felt is reduced layer by layer from top to bottom The form of distribution, through the filter screen 13 made of 80-100 mesh metal sand and nine layers of metal sintered felt, the melt can be evenly distributed to each spinneret hole, which can avoid the formation of weak filaments of single filaments and cause floating filaments The problem of broken ends will not cause too high component pressure, shorten the component cycle, increase production costs and other problems, and ensure the uniformity of elongation;

Fixedly connected to the windless area isolation cover 15 of the windless area on the lower wall of the spinning beam 9; fixedly connected to the air blow cooler 16 on the lower wall of the air free area isolation cover 15, and the air blow cooler 16 passes through the air conditioning fan Provide cooling air; from top to bottom, fixedly connected to the oil nozzle 17 on the front wall of the mounting plate 31 for oiling the tow and the drafting device 18 for thermal drawing and shaping of the tow, the oil nozzle 17, the draft The device 18 is all arranged under the surrounding blower cooler 16, the oil agent used in the oil nozzle 17 is a crude oil agent with a concentration of more than 90%, the moisture in the crude oil agent is no more than 2%, and the crude oil agent with a moisture content of no more than 2% is used, so that the The temperature of the hot roller in the stretching device 18 can be set lower than the temperature of the hot roller in the traditional technology, so as to achieve the purpose of energy saving;

The winding device 19 fixedly connected to the upper wall of the bottom plate 3, the front wall of the winding device 19 is sequentially provided with a guide wire assembly for guiding and a winding drum 21 for collecting tow from left to right, the guide wire assembly includes a rotating shaft 26 , the guide wheel 27, the rotating shaft 26 is suspended on the inner wall of the first magnetic suspension bearing 24 and the second magnetic suspension bearing 25, and the outer wall of one end of the rotating shaft 26 away from the first magnetic suspension bearing 24 and the second magnetic suspension bearing 25 runs through the dust cover 23 and extends to the In front of the dust cover 23, the godet wheel 27 is fixedly connected to the outer wall of one end of the rotating shaft 26 protruding to the front of the dust cover 23, and the friction between the tow and the godet wheel 27 is reduced by setting the godet wheel 27 in a rotating form , so as to prevent the godet wheel 27 from getting hot, so that the multi-bundle tow reaches the elongation index of the same part and connects evenly, ensuring that the dyeing of the back cloth surface is consistent and soft to the touch.

A suspension structure for reducing friction is provided between the guide wire assembly and the winding device 19. The suspension structure includes a bearing seat 20, a first magnetic suspension bearing 24 and a second magnetic suspension bearing 25. The front wall of the equipment 19, the first magnetic suspension bearing 24 and the second magnetic suspension bearing 25 are arranged on the inner side wall of the bearing housing 20 in order from back to front, and the end of the bearing housing 20 far away from the fixed plate 22 is clipped with a dust cover 23, through the suspension The structure makes the rotating shaft 26 not in contact with the bearing seat 20, has little mechanical wear, is almost maintenance-free, and can better adapt to high-speed spinning;

The limit structure is arranged between the guide wire assembly and the suspension structure to prevent the guide wire assembly from moving back and forth. The limit structure includes a second ring magnet 29 and two sets of first ring magnets 30. The second ring magnet 29 is fixedly connected to the The outer wall of the rotating shaft 26 is located between the first magnetic suspension bearing 24 and the second magnetic suspension bearing 25. Two sets of first ring magnets 30 are fixedly connected to the inner wall of the bearing housing 20 through two sets of mounting brackets 28. The two sets of first ring magnets 30 and the mounting brackets 28 inner walls are all provided with relief holes that run through front and back, and the rotating shaft 26 runs through the relief holes on the inner walls of two groups of first ring magnets 30 and mounting brackets 28. The second ring magnets 29 and the first two groups of ring magnets 30 are shafts. Magnetized in the opposite direction, the limit structure can ensure that the rotating shaft 26 will not move back and forth during the rotation, thereby avoiding affecting the quality of the tow.

Semi-dull drawn yarn production method, the production method comprises the following steps:

S1. The raw materials are reacted in the final polymerization tank 4 to form a melt, and the melt is pumped out by the melt output pump 5 to the melt distributor 6, and then distributed by the melt distributor 6, and then boosted by the booster pump 7, The static mixer 8 is fully mixed, and the mixed melt enters the spinning box 9 for spinning, and the temperature of the spinning box 9 is 290 ° C;

S2, after the melt enters the spinning box body 9, it is metered by the metering pump 10, then enters the filter box 11 to filter impurities and increase the temperature of the melt, and then sprays out through the spinneret 14 to form a tow, and the filter box 11 The initial pressure is controlled at 13-15MPa;

S3. The tow passes through the air-circulating cooler 16, and the air-conditioning fan provides cooling air to the air-circulating cooler 16 to cool the tow by blowing air. The temperature of the cooling air is controlled at 21° C., and the pressure of the cooling air is controlled at 25 Pa;

S4. The cooled tow is oiled through the oiling nozzle 17, then thermally drawn and shaped through the drafting device 18, and finally guided by the godet wheel 27 and then wound and collected by the winding drum 21.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (8)

1. Semi-dull drawing silk production equipment, it is characterized in that: comprise spinning building (1), described spinning building (1) top and bottom are respectively fixedly connected with top plate (2) and bottom plate (3), described spinning The inner wall of the silk building (1) is fixedly connected with a mounting plate (31); From back to front, the polymerization finalizer (4), melt output pump (5), melt distributor (6), booster pump (7) and static mixer fixedly connected to the upper wall of the top plate (2) in sequence device (8), the melt output pump (5) is fixedly connected to the outlet end of the polymerization finalizer (4) and the inlet end of the melt distributor (6), and the booster pump (7) is connected to the melt distributor (6) The outlet end and the static mixer (8) are fixedly connected to the inlet end; Fixedly connected to the spinning beam (9) on the lower wall of the top plate (2), the end of the static mixer (8) away from the booster pump (7) is fixedly connected to the spinning beam (9) through a pipeline; The metering pump (10), the filter box (11) and the spinneret (14) are arranged in the spinning box (9) from top to bottom, and the inside of the filter box (11) is from top to bottom. Filter sand (12) and filter screen (13) are provided; Fixedly connected to the lower wall of the spinning beam (9) for forming a windless zone isolation cover (15) for a windless zone; The surrounding air cooler (16) fixedly connected to the lower wall of the windless zone isolation cover (15), the annular air cooler (16) provides cooling wind through the air-conditioning blower; From top to bottom, it is fixedly connected to the oiling nozzle (17) on the front wall of the mounting plate (31) for oiling the tow and the drafting device (18) for thermal drawing and shaping of the tow. (17), the drafting device (18) are all arranged under the ring air cooler (16); The winding device (19) fixedly connected to the upper wall of the bottom plate (3), the front wall of the winding device (19) is sequentially provided with a guide wire assembly for guiding and a roll for collecting tow from left to right A bobbin (21), a suspension structure for reducing friction is provided between the guide wire assembly and the winding device (19); A position-limiting structure is arranged between the guide wire assembly and the suspension structure to prevent the guide wire assembly from moving back and forth. 2. The semi-dull drawn yarn production equipment according to claim 1, characterized in that: the filter sand (12) is 80-100 mesh metal sand. 3. The semi-dull drawing yarn production equipment according to claim 2, characterized in that: the filter screen (13) is a nine-layer metal sintered metal fiber sintered by non-woven laying, lamination and high-temperature sintering. Felt, the mesh size of the nine-layer metal sintered felt is distributed in the form of decreasing layer by layer from top to bottom. 4. The semi-dull drawing yarn production equipment according to claim 3, characterized in that: the oil agent used in the oiling nozzle (17) is a crude oil agent with a concentration of 90% or more, and the moisture in the crude oil agent does not exceed 2%. 5. The semi-dull drawn yarn production equipment according to claim 4, characterized in that: the suspension structure comprises a bearing seat (20), a first magnetic suspension bearing (24) and a second magnetic suspension bearing (25), the The bearing seat (20) is fixedly connected to the front wall of the winding device (19) through the fixing plate (22), and the first magnetic suspension bearing (24) and the second magnetic suspension bearing (25) are arranged on the bearing in sequence from back to front The inner side wall of the seat (20), the end of the bearing seat (20) away from the fixed plate (22) is clamped with a dust cover (23). 6. The semi-dull drawn yarn production equipment according to claim 5, characterized in that: the guide wire assembly includes a rotating shaft (26) and a wire guide wheel (27), and the rotating shaft (26) is suspended on the first magnetic levitation Bearing (24), second magnetic suspension bearing (25) inner wall, described rotating shaft (26) is far away from first magnetic suspension bearing (24), an end outer wall of second magnetic suspension bearing (25) runs through dust cover (23) and extends to In front of the dust cover (23), the guide wheel (27) is fixedly connected to the outer wall of one end of the rotating shaft (26) stretching out to the front of the dust cover (23). 7. The semi-dull drawn yarn production equipment according to claim 6, characterized in that: the position-limiting structure comprises a second ring magnet (29), two groups of first ring magnets (30), and the second ring magnet The magnet (29) is fixedly connected to the outer wall of the rotating shaft (26) and is positioned between the first magnetic suspension bearing (24) and the second magnetic suspension bearing (25). ) is fixedly connected to the inner side wall of the bearing seat (20), and the inner walls of the first ring magnet (30) and the mounting bracket (28) of the two groups are all provided with a relief hole that runs through the front and rear, and the rotating shaft (26) is connected from the second group of the second group. A ring magnet (30) and the relief hole on the inner wall of the mounting bracket (28) pass through, and the second ring magnet (29) and the two groups of first ring magnets (30) are all axially magnetized. 8. The production method of semi-dull drawn yarn, characterized in that: the production method comprises the steps of: S1. The raw materials are reacted in the final polymerization kettle (4) to form a melt, and the melt is pumped out by the melt output pump (5) to the melt distributor (6), and then distributed by the melt distributor (6). The booster pump (7) pressurizes, the static mixer (8) fully mixes, and the mixed melt enters the spinning box (9) for spinning, and the temperature of the spinning box (9) is 290°C; S2. After the melt enters the spinning box (9), it is measured by the metering pump (10), and then enters the filter box (11) to filter impurities and increase the temperature of the melt, and then sprays through the spinneret (14). Go out and form tow, initial pressure is controlled at 13-15MPa in the filter box (11); S3, the tow passes through the ring blowing cooler (16), and the cooling air is provided to the ring blowing cooler (16) by the air-conditioning fan, and the tow is blown and cooled. The temperature of the cooling air is controlled at 21° C., and the pressure of the cooling air is controlled. at 25Pa; S4. The cooled tow is oiled through the oiling nozzle (17), then thermally drawn and shaped by the drafting device (18), and finally wound by the winding drum (21) after being guided by the godet wheel (27) Collect around.

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