Self-adaptive drafting spinning method

Abstract

The invention discloses a self-adaptive drafting device and a spinning method, a drafting system comprises a front drafting roller pair, a middle drafting roller pair and a rear drafting roller pair, a middle lower roller or a rear lower roller is selected as a driven lower roller, the rest rear lower roller is selected, the front lower roller or the middle lower roller and the front lower roller are active lower rollers, and a roller sleeve of the driven lower roller is connected with a roller shaft through a bearing. A roller sleeve of the driving lower roller is fixedly connected with a roller shaft and is driven by a corresponding servo motor to actively rotate, the middle lower roller is selected as the driven lower roller, self-adaptive adjustment of draft multiple distribution in the drafting process is achieved, the rear lower roller is selected as the driven lower roller, and self-adaptive adjustment of draft multiple distribution in the drafting process is achieved. The self-adaptive finishing drafting of fed short fiber roving before main drafting is achieved, the self-adaptive drafting process is achieved under the condition that the driven lower roller does not need to be driven by a motor and does not need to be connected with the driving lower roller through a gear for transmission, the drafting effect is improved, the overall structure of the spinning frame is simplified, and the production cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of spinning, in particular to an adaptive draft spinning method. Background Art

[0002] As the times continue to advance, people's requirements for clothing fabrics continue to increase. At present, the textile and clothing industry is in an era of pursuing fashion, diversification and high quality. Therefore, new requirements have been put forward for the development of textile raw materials. Among them, fancy yarns have gradually entered people's field of vision and occupied an irreplaceable position. Fancy yarn refers to yarns with special structures and appearance effects obtained by processing fibers or yarns with special raw materials, special equipment or special processes during the spinning and thread making process. It is a kind of yarn with decorative effect in yarn products. Fancy yarn has unique structure, flexible shape, rich color expression, diversified use of raw materials and creativity. These make it easy for fancy yarn products to be innovative and produce more differentiated textile products. In today's era of pursuing personalized consumption, the market has given fancy yarns a broad space. Drafting is the most important link in the production of fine yarn. During drafting, the fibers are gradually drawn out from the surrounding fiber groups one by one. Due to mutual friction, the hooks are gradually eliminated and the curling is gradually straightened. In this way, the lateral connection remaining in each fiber may be completely eliminated, creating conditions for firmly establishing a regular head-to-tail connection relationship. Therefore, effective control of fibers during the drafting process is an important condition for achieving excellent drafting effects. Summary of the invention

[0003] The purpose of the present invention is to provide an adaptive draft spinning method, so as to realize adaptive adjustment of draft during the spinning process, simplify the overall structure of the spinning frame and save production costs.

[0004] The present invention provides an adaptive drafting spinning method, which adopts an adaptive drafting spinning device, wherein the adaptive drafting spinning device comprises a drafting system, wherein the drafting system comprises three rows of drafting rollers: a rear drafting roller pair, a middle drafting roller pair, and a front drafting roller pair, wherein the rear drafting roller pair comprises a rear lower roller and a rear upper rubber roller, wherein the middle drafting roller pair comprises a middle lower roller and a middle upper rubber roller, wherein the front drafting roller pair comprises a front lower roller and a front upper rubber roller, wherein one of the middle lower roller or the rear lower roller is a passive lower roller, and the remaining rear lower roller, the front lower roller, the middle lower roller, and the front lower roller are active lower rollers, wherein the passive lower roller comprises a passive roller shaft and a passive row sleeve, wherein the spinning frame The roller shafts of the passive lower rollers of all the spindles of the rear car table and the front car table are integrally connected, the passive roller sleeve is sleeved on the passive roller shaft through the lower connecting bearing, the active lower roller includes an active roller shaft and an active roller sleeve, the roller shafts of the active lower rollers of the 8 spindles of the front car table of the spinning frame are integrally connected, the roller shafts of the active lower rollers of the 8 spindles of the rear car table of the spinning frame are integrally connected, the roller shafts of two adjacent active lower rollers are drivably connected through a roller seat, the active roller sleeve is fixedly sleeved on the active roller shaft, and the active roller shaft of the active lower roller is driven to rotate by the first servo motor and the second servo motor respectively;

[0005] When the middle lower roller is selected as the passive lower roller, the middle pressing and holding jaw between the stationary middle lower roller and the middle upper rubber roller is first driven by the front pressing and holding active continuous conveying jaw between the rotating front lower roller and the front upper rubber roller, and then rotates at a first steady-state speed, and then adaptively adjusted with the rear pressing and holding active continuous conveying jaw between the rotating rear lower roller and the rear upper rubber roller, and rotates at a second steady-state speed, so that the total draft between the rear drafting roller pair and the front drafting roller pair is adaptively distributed into a rear drafting zone between the rear drafting roller pair and the middle drafting roller pair, and a front drafting zone between the middle drafting roller pair and the front drafting roller pair, so as to realize adaptive adjustment of the draft multiple distribution during the drafting process;

[0006] When the rear lower roller is selected as the passive lower roller, the rear pressing and holding jaw between the stationary rear lower roller and the rear upper rubber roller is driven by the middle pressing and holding active continuous conveying jaw between the rotating middle lower roller and the middle upper rubber roller to rotate at a third steady-state speed, and a finishing and stretching zone is formed between the rear pressing and holding passive continuous conveying jaw and the middle pressing and holding active continuous conveying jaw, so as to realize adaptive finishing and stretching of the fed roving before the main stretching, and a main stretching zone is formed between the middle pressing and holding active continuous conveying jaw and the front pressing and holding active continuous conveying jaw, and the short fiber roving is subjected to the main stretching action of the main stretching zone to obtain short fiber strands with reduced linear density.

[0007] In the adaptive draft spinning method as described above, preferably, the passive roller sleeve is made of iron or steel, and the active roller sleeve is made of iron or steel.

[0008] In the adaptive draft spinning method as described above, preferably, both the first servo motor and the second servo motor are connected to a programmable logic controller.

[0009] In the adaptive draft spinning method as described above, preferably, the rear upper glue roller, the middle upper glue roller and the front upper glue roller have the same structure and are all arranged on the pressure assembly.

[0010] An adaptive draft spinning method as described above, wherein, preferably, after the pressure assembly is pressed downward, the rubber roller sleeve of the rear upper rubber roller is in close pressing contact with the roller sleeve of the rear lower roller, a rear pressing and holding jaw is formed between the rubber roller sleeve of the rear upper rubber roller and the roller sleeve of the rear lower roller, and the rear pressing and holding jaw maintains a certain pressing and holding force, the rubber roller sleeve of the middle upper rubber roller is in close pressing contact with the roller sleeve of the middle lower roller, a middle pressing and holding jaw is formed between the rubber roller sleeve of the middle upper rubber roller and the roller sleeve of the middle lower roller, and the middle pressing and holding jaw maintains a certain pressing and holding force, the rubber roller sleeve of the front upper rubber roller is in close pressing contact with the roller sleeve of the front lower roller, a front pressing and holding jaw is formed between the rubber roller sleeve of the front upper rubber roller and the roller sleeve of the front lower roller, and the front pressing and holding jaw maintains a certain pressing and holding force.

[0011] An adaptive draft spinning method as described above, wherein preferably, when the middle lower roller is selected as the passive lower roller, the corresponding rear lower roller and the front lower roller are both active lower rollers, the first servo motor drives the roller shaft of the rear lower roller to rotate, drives the rubber roller sleeve of the rear upper rubber roller in close pressing contact with it to rotate, so that the rear pressing and holding jaw is transformed into a rear pressing and holding active continuous conveying jaw, the second servo motor drives the roller shaft of the front lower roller to rotate, drives the rubber roller sleeve of the front upper rubber roller in close pressing contact with it to rotate, so that the front pressing and holding jaw is transformed into a front pressing and holding active continuous conveying jaw, and the speed of the second servo motor is set to be greater than the speed of the first servo motor, at this time the middle lower roller In a stationary state, the corresponding middle upper rubber roller is also in a stationary state, so that the middle pressing and holding jaw still maintains its original state, and the short-fiber roving unwound from the roving tube passes through the rear pressing and holding active continuous conveying jaw, the middle pressing and holding jaw, and the front pressing and holding active continuous conveying jaw in sequence to complete the drafting process in the drafting system. In this process, in the initial stage, the short-fiber roving is firstly held by the rear pressing and holding active continuous conveying jaw and continuously conveyed into the drafting system at a certain speed, and finally held by the front pressing and holding active continuous conveying jaw and continuously output from the drafting system at a certain speed. When the short-fiber roving passes through the middle pressing and holding jaw which is in a stationary state in the initial stage, in the drafting In the system, first, the head end of the staple roving is gripped by the front pressing and holding active continuous conveying jaw and actively and continuously output forward at a certain speed to the drafting system; due to the gripping force of the middle pressing and holding jaw on the staple roving, the staple roving conveyed forward generates a forward driving force on the middle pressing and holding jaw in a static state; when the forward driving force generated is greater than the passive driving resistance of the pressing and holding jaw, the middle pressing and holding jaw begins to change from a static state to a moving state, and the conveying speed of the middle pressing and holding jaw increases continuously; when the difference between the conveying speed of the middle pressing and holding jaw and the conveying speed of the front pressing and holding active continuous conveying jaw is greater than the first drafting force generated on the staple roving, When the pressing and holding of the middle pressing and holding jaw passively drives resistance, the middle pressing and holding jaw conveys at a first steady-state speed in the front stretching zone between the middle pressing and holding jaw and the front pressing and holding active continuous conveying jaw, and the first steady-state speed is greater than the conveying speed of the rear pressing and holding active continuous conveying jaw. At the same time, in the stretching system, the tail end of the staple roving is held by the rear pressing and holding active continuous conveying jaw and actively and continuously input forward into the stretching system at a certain speed. At this time, since the first steady-state speed of the middle pressing and holding jaw is greater than the conveying speed of the rear pressing and holding active continuous conveying jaw, in the rear stretching zone between the rear pressing and holding active continuous conveying jaw and the middle pressing and holding jaw,The difference between the conveying speed of the middle pressing and holding jaw and the conveying speed of the rear pressing and holding active continuous conveying jaw generates a second stretching force on the staple roving, and under the action of the second stretching force, the speed of the middle pressing and holding jaw is reduced, and in the dynamic balance process, the middle pressing and holding jaw is finally conveyed at a second steady-state speed in the drafting system, and finally the middle pressing and holding jaw is transformed into a middle pressing and holding passive continuous conveying jaw, and at this time, the staple roving is subjected to the stretching effect of the third stretching force generated by the difference between the conveying speed of the front pressing and holding active continuous conveying jaw and the conveying speed of the middle pressing and holding passive continuous conveying jaw in the rear stretching area. The short fiber roving is subjected to the drafting effect of the sum of the first drafting force and the third drafting force in the front drafting zone, so that the short fiber roving is subjected to the drafting effect of the third drafting force in the rear drafting zone to obtain the first short fiber strip with reduced linear density, and the first short fiber strip is subjected to the drafting effect of the sum of the first drafting force and the third drafting force in the front drafting zone to obtain the first short fiber strand with reduced linear density, and the total draft between the rear drafting roller pair and the front drafting roller pair is adaptively distributed into the rear drafting zone between the rear drafting roller pair and the middle drafting roller pair, and the front drafting zone between the middle drafting roller pair and the front drafting roller pair, so as to realize the adaptive adjustment of the draft multiple distribution in the drafting process.

[0012] An adaptive draft spinning method as described above, wherein preferably, when the rear lower roller is selected as the passive lower roller, the corresponding middle lower roller and the front lower roller are both active lower rollers, the first servo motor drives the roller shaft of the middle lower roller to rotate, and drives the rubber roller sleeve of the middle upper rubber roller in close pressing contact with it to rotate, so that the middle pressing and holding jaw is transformed into a middle pressing and holding active continuous conveying jaw, the second servo motor drives the roller shaft of the front lower roller to rotate, and drives the rubber roller sleeve of the front upper rubber roller in close pressing contact with it to rotate, so that the front pressing and holding jaw is transformed into a front pressing and holding active continuous conveying jaw, and the speed of the second servo motor is set to be greater than the speed of the first servo motor, at this time the rear lower roller is in a static state. The rear rubber roller is in a stopped state, and the corresponding rear pressing and holding jaw is also in a stationary state, so that the rear pressing and holding jaw remains in its original state, and the short-fiber roving unwound from the roving tube passes through the rear pressing and holding jaw, the middle pressing and holding active continuous conveying jaw, and the front pressing and holding active continuous conveying jaw in sequence, thereby completing the drafting process in the drafting system. During this process, in the initial stage, the short-fiber roving is held by the middle pressing and holding active continuous conveying jaw after passing through the rear pressing and holding jaw which is in a stationary state in the initial stage, and is continuously conveyed into the drafting system at a certain speed, and is finally held by the front pressing and holding active continuous conveying jaw and continuously output from the drafting system at a certain speed. The short-fiber roving passes through the When the rear pressing holding jaw is used, the head end of the staple roving in the rear drafting area of ​​the drafting system is held by the middle pressing holding active continuous conveying jaw and actively conveyed forward continuously at a certain speed. Due to the holding force of the rear pressing holding jaw on the staple roving, the staple roving conveyed forward generates a forward driving force on the rear pressing holding jaw in a stationary state. When the forward driving force generated is greater than the passive driving resistance of the rear pressing holding jaw, the rear pressing holding jaw begins to change from a stationary state to a moving state, and the conveying speed of the rear pressing holding jaw increases continuously. When the difference between the conveying speed of the rear pressing holding jaw and the conveying speed of the middle pressing holding active continuous conveying jaw generates a force on the staple roving, When the fourth stretching force is equal to the passive driving resistance of the rear pressing and holding jaw, the rear pressing and holding jaw is transported at the third steady-state speed in the finishing and stretching zone between the rear pressing and holding jaw and the middle pressing and holding active continuous conveying jaw, so that the rear pressing and holding jaw is transformed into the rear pressing and holding passive continuous conveying jaw, so that in the finishing and stretching zone between the rear pressing and holding passive continuous conveying jaw and the middle pressing and holding active continuous conveying jaw, the short fiber roving obtains a second short fiber strip with reduced linear density under the stretching action of the fourth stretching force, thereby realizing adaptive finishing and stretching of the fed roving before the main stretching, and in the main stretching zone between the middle pressing and holding active continuous conveying jaw and the front pressing and holding active continuous conveying jaw,The second staple fiber strip is subjected to the fifth drafting force generated by the difference between the conveying speed of the middle pressing and holding active continuous conveying jaw and the conveying speed of the front pressing and holding active continuous conveying jaw to obtain a second staple fiber strip with reduced linear density.

[0013] In the adaptive draft spinning method as described above, preferably, the active roller sleeves between two adjacent spindle positions maintain a certain distance.

[0014] An adaptive draft spinning method as described above, wherein preferably, the rear upper rubber roller, the middle upper rubber roller, and the front upper rubber roller have the same structure, the rear upper rubber roller, the middle upper rubber roller, and the front upper rubber roller include rubber roller shafts, the rubber roller shafts are made of iron or steel, and the rubber roller shafts are solid cylindrical structures, a spindle position on the front car table of the spinning frame and an adjacent spindle position on the left or right side form a spindle group, a spindle position on the rear car table of the spinning frame and an adjacent spindle position on the left or right side form a spindle group, the rubber roller shafts of the two spindles of each spindle group on the front car table of the spinning frame are integrally connected, the rubber roller shafts of the middle upper rubber roller are integrally connected, and the rubber roller shafts of the front upper rubber roller are integrally connected, the rubber roller shafts of the two spindles of each spindle group on the rear car table of the spinning frame are integrally connected, the rubber roller shafts of the middle upper rubber roller are integrally connected, and the front upper rubber roller The rubber roller shafts of the rollers are integrally connected, a rubber roller sleeve is sleeved on the rubber roller shaft, the rubber roller sleeve is made of rubber, the rubber roller sleeve is connected to the rubber roller shaft through a lower connecting bearing, a certain distance is maintained between the rubber roller sleeves of the rear upper rubber rollers of two ingots in one ingot group, and the rubber roller shaft between the rubber roller sleeves of the rear upper rubber roller between two ingots in one ingot group is embedded in the rear embedded grip of the pressure component, a certain distance is maintained between the rubber roller sleeves of the middle upper rubber rollers between two ingots in one ingot group, and the rubber roller shaft between the rubber roller sleeves of the middle upper rubber rollers between two ingots in one ingot group is embedded in the middle embedded grip of the pressure component, a certain distance is maintained between the rubber roller sleeves of the front upper rubber rollers between two ingots in one ingot group, and the rubber roller shaft between the rubber roller sleeves of the front upper rubber rollers between two ingots in one ingot group is embedded in the front embedded grip of the pressure component.

[0015] Compared with the prior art, the present invention adopts a drafting system including three rows of drafting roller pairs, namely, front, middle and rear, and selects one of the middle bottom roller or the rear bottom roller as a passive bottom roller, and the remaining rear bottom roller, front bottom roller or the middle bottom roller and the front bottom roller are active bottom rollers. The roller sleeve of the passive bottom roller is connected to the roller shaft through a bearing, and the roller sleeve of the active bottom roller is fixedly connected to the roller shaft, and the roller shaft of the active bottom roller is driven by a corresponding servo motor to actively rotate, and then an active drafting multiple is generated between two adjacent active bottom rollers due to the speed difference of the active bottom rollers, and an adjacent active bottom roller is connected to the roller shaft. The passive drafting multiple is generated between the roller and a passive lower roller due to the passive driving resistance of the passive lower roller and the passive rubber roller, so that when the middle lower roller is selected as the passive lower roller, the adaptive adjustment of the drafting multiple distribution in the drafting process is realized, and when the rear lower roller is selected as the passive lower roller, the adaptive finishing drafting of the fed short fiber roving before the main drafting is realized. The adaptive drafting process is realized when the passive lower roller does not need to be driven by a motor or connected with the active lower roller by a gear, thereby improving the drafting effect, simplifying the overall structure of the spinning frame, and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the adaptive draft spinning device of the present invention.

[0017] Explanation of the accompanying drawings: 1-spun roving, 2-rear lower roller, 3-rear upper rubber roller, 4-middle lower roller, 5-middle upper rubber roller, 6-front lower roller, 7-front upper rubber roller, 8-passive roller shaft, 9-passive roller sleeve, 10-lower connecting bearing, 11-active roller shaft, 12-active roller sleeve, 13-rubber roller shaft, 14-rubber roller sleeve, 15-first servo motor, 16-second servo motor, 17-programmable logic controller, 18-yarn guide hook, 19-wire ring, 20-steel collar, 21-spinning tube. DETAILED DESCRIPTION

[0018] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but should not be construed as limiting the present invention.

[0019] An adaptive drafting spinning method is disclosed, wherein a middle lower roller 4 is selected as a passive lower roller to realize adaptive adjustment of the draft multiple distribution during the drafting process, or a rear lower roller 2 is selected as a passive lower roller to realize adaptive finishing drafting of the fed short fiber roving 1 before the main drafting, and then an adaptive drafting process is realized when the passive lower roller does not need to be driven by a motor and does not need to be connected to the active lower roller by a gear transmission, thereby simplifying the overall structure of the spinning frame and saving production costs.

[0020] In order to achieve the above object, the present invention relates to an adaptive draft spinning method, using an adaptive draft spinning device, referring to Figure 1 As shown, the adaptive drafting spinning device includes a drafting system, and the drafting system includes three rows of drafting rollers: a rear drafting roller pair, a middle drafting roller pair, and a front drafting roller pair. The rear drafting roller pair includes a rear bottom roller 2 and a rear upper rubber roller 3, the middle drafting roller pair includes a middle bottom roller 4 and a middle upper rubber roller 5, and the front drafting roller pair includes a front bottom roller 6 and a front upper rubber roller 7. One of the middle bottom roller 4 or the rear bottom roller 2 is a passive bottom roller, and the remaining rear bottom roller 2, front bottom roller 6 or middle bottom roller 4, front bottom roller 6 are active bottom rollers. The passive bottom roller includes a passive roller shaft 8, and the passive roller shaft 8 is made of iron or steel, and the passive roller shaft 8 is a solid cylinder. The structure is shaped, the roller shafts of the passive lower rollers of all the spindles on the front car table of the spinning frame are integratedly connected, and the roller shafts of the passive lower rollers of all the spindles on the rear car table of the spinning frame are integratedly connected. A passive roller sleeve 9 is sleeved on the passive roller shaft 8. The passive roller sleeve 9 is made of iron or steel. The passive roller sleeve 9 is a cylindrical hollow structure with both ends open. The passive roller sleeve 9 is sleeved on the passive roller shaft 8. The passive roller sleeve 9 is connected to the passive roller shaft 8 through a lower connecting bearing 10, so that the passive roller sleeve 9 can rotate freely around the passive roller shaft 8, and the passive roller sleeve 9 between two adjacent spindles maintains a certain distance.

[0021] The active lower roller comprises an active roller shaft 11, which is made of iron or steel and is a solid cylindrical structure. The roller shafts of the active lower rollers at the 8 spindles on the front car table of the spinning frame are integrally connected, and the roller shafts of the active lower rollers at the 8 spindles on the rear car table of the spinning frame are integrally connected. The roller shafts of two adjacent active lower rollers are drivably connected through a roller seat. An active roller sleeve 12 is sleeved on the active roller shaft 11, and the active roller sleeve 12 is made of iron or steel and is a cylindrical hollow structure with open ends. The active roller sleeve 12 is sleeved on the active roller shaft 11, and the active roller sleeve 12 is integrally fixedly connected to the active roller shaft 11, so that the active roller sleeve 12 and the active roller shaft 11 rotate synchronously, and the active roller sleeve 12 between two adjacent spindles maintains a certain distance.

[0022] The structures of the rear upper rubber roller 3, the middle upper rubber roller 5 and the front upper rubber roller 7 are the same. The rear upper rubber roller 3, the middle upper rubber roller 5 and the front upper rubber roller 7 include a rubber roller shaft 13. The rubber roller shaft 13 is made of iron or steel. The rubber roller shaft 13 is a solid cylindrical structure. A spindle position on the front car table of the spinning frame and a spindle position adjacent to the left or right side form a spindle position group. A spindle position on the rear car table of the spinning frame and a spindle position adjacent to the left or right side form a spindle position group. The rubber roller shafts 13 of the two spindle positions of each spindle position group on the front car table of the spinning frame are integrally connected. The rubber roller shafts 13 of the rubber rollers 5 are connected in an integrated manner, the rubber roller shafts 13 of the front rubber rollers 7 are connected in an integrated manner, the rubber roller shafts 13 of the rear rubber rollers 3 of the two spindles of each spindle group of the rear car table of the spinning machine are connected in an integrated manner, the rubber roller shafts 13 of the middle rubber rollers 5 are connected in an integrated manner, and the rubber roller shafts 13 of the front rubber rollers 7 are connected in an integrated manner. A certain distance is maintained between the rubber roller sleeves 14 of the rear rubber rollers 3 of the two spindles in one spindle group, and a rubber roller sleeve 14 is sleeved on the rubber roller shaft 13. The rubber roller sleeve 14 is made of rubber, and the rubber roller sleeve 14 and the rubber roller shaft 13 are connected by The rubber roller sleeve 14 is connected to the lower connecting bearing 10, so that the rubber roller sleeve 14 can rotate freely around the rubber roller shaft 13, and the rubber roller shaft 13 between the rubber roller sleeves 14 of the rear upper rubber roller 3 between the two ingots in one ingot group is embedded in the rear embedding grip of the pressurizing assembly, so as to realize the installation of the rear upper rubber roller 3 on the pressurizing assembly, and a certain distance is maintained between the rubber roller sleeves 14 of the middle upper rubber roller 5 between the two ingots in one ingot group, and the rubber roller shaft 13 between the rubber roller sleeves 14 of the middle upper rubber roller 5 between the two ingots in one ingot group is embedded in the middle embedding grip of the pressurizing assembly, so as to realize In the present installation of the upper rubber roller 5 on the pressure component, a certain distance is maintained between the rubber roller sleeves 14 of the front upper rubber roller 7 between the two ingots in one ingot group, and the rubber roller shaft 13 between the rubber roller sleeves 14 of the front upper rubber roller 7 located at the two ingots in one ingot group is embedded in the front embedding grip of the pressure component, thereby realizing the installation of the front upper rubber roller 7 on the pressure component, and the active roller shaft 11 of the active bottom roller is driven to rotate by the first servo motor 15 and the second servo motor 16 respectively, and the first servo motor 15 and the second servo motor 16 are both connected to the programmable logic controller 17.

[0023] The present invention also relates to an adaptive draft spinning method. When in use, the pressure component is pressed down, so that the rubber roller cover 14 of the rear upper rubber roller 3 and the roller cover of the rear lower roller 2 are closely pressed and contacted, and then a rear pressing and holding jaw is formed between the rubber roller cover 14 of the rear upper rubber roller 3 and the roller cover of the rear lower roller 2, and the rear pressing and holding jaw maintains a certain pressing and holding force, and the rubber roller cover 14 of the middle upper rubber roller 5 and the roller cover of the middle lower roller 4 are closely pressed and contacted. Pressing contact, then a middle pressing and holding jaw is formed between the rubber roller cover 14 of the middle upper rubber roller 5 and the roller cover of the middle lower roller 4, and the middle pressing and holding jaw maintains a certain pressing and holding force, the rubber roller cover 14 of the front upper rubber roller 7 and the roller cover of the front lower roller 6 are closely pressed and contacted, then a front pressing and holding jaw is formed between the rubber roller cover 14 of the front upper rubber roller 7 and the roller cover of the front lower roller 6, and the front pressing and holding jaw maintains a certain pressing and holding force,

[0024] When the middle lower roller 4 is selected as the passive lower roller, the corresponding rear lower roller 2 and front lower roller 6 are both active lower rollers, and the first servo motor 15 drives the roller shaft of the rear lower roller 2 to rotate, and then drives the rubber roller cover 14 of the rear upper rubber roller 3 which is in close pressing contact with it to rotate, so that the rear pressing and holding jaw is transformed into a rear pressing and holding active continuous conveying jaw, and the second servo motor 16 drives the roller shaft of the front lower roller 6 to rotate, and then drives the rubber roller cover 14 of the front upper rubber roller 7 which is in close pressing contact with it to rotate, so that the front pressing and holding jaw is transformed into a front pressing and holding active continuous conveying jaw, and the speed of the second servo motor 16 is set to be greater than the speed of the first servo motor 15. At this time, the middle lower roller 4 is in a stationary state, and the corresponding middle upper rubber roller 5 is also It is in a static state, and then the middle pressing and holding jaw remains in its original state. The staple roving 1 unwound from the roving tube passes through the rear pressing and holding active continuous conveying jaw, the middle pressing and holding jaw, and the front pressing and holding active continuous conveying jaw in sequence, thereby completing the drafting process in the drafting system. In this process, in the initial stage, the staple roving 1 is first held by the rear pressing and holding active continuous conveying jaw and continuously conveyed into the drafting system at a certain speed, and finally held by the front pressing and holding active continuous conveying jaw and continuously output from the drafting system at a certain speed. When the staple roving 1 passes through the middle pressing and holding jaw which is in a static state in the initial stage, the head end of the staple roving 1 is first held by the front pressing and holding active continuous conveying jaw in the drafting system. The feeding jaws hold and actively and continuously output the drafting system forward at a certain speed. Due to the holding force of the middle pressing and holding jaws on the staple roving 1, the staple roving 1 transported forward generates a forward driving force on the middle pressing and holding jaws in a static state. When the generated forward driving force is greater than the passive driving resistance of the pressing and holding jaws, the middle pressing and holding jaws start to change from a static state to a moving state, and the passive driving resistance of the pressing and holding jaws is determined by the friction resistance between the rubber roller sleeve 14 of the middle upper rubber roller 5 and the rubber roller shaft 13, the friction resistance between the roller sleeve of the middle lower roller 4 and the roller shaft, and the pressing force between the rubber roller sleeve 14 of the middle upper rubber roller 5 and the roller sleeve of the middle lower roller 4, and makes The conveying speed of the middle pressing and holding jaw increases continuously, and when the difference between the conveying speed of the middle pressing and holding jaw and the conveying speed of the front pressing and holding active continuous conveying jaw generates a first stretching force on the staple roving 1 that is equal to the passive driving resistance of the pressing and holding of the middle pressing and holding jaw, and the magnitude of the first stretching force is determined by the passive driving resistance of the pressing and holding of the middle pressing and holding jaw, the middle pressing and holding jaw conveys at a first steady-state speed in the front stretching zone between the middle pressing and holding jaw and the front pressing and holding active continuous conveying jaw, and the first steady-state speed is determined by the passive driving resistance of the pressing and holding of the middle pressing and holding jaw and the conveying speed of the front pressing and holding active continuous conveying jaw, and the first steady-state speed is greater than the conveying speed of the rear pressing and holding active continuous conveying jaw.At the same time, in the drafting system, since the tail end of the staple roving 1 is grasped by the rear-pressing and holding active continuous conveying jaw and is actively and continuously input forward into the drafting system at a certain speed, and at this time, since the first steady-state speed of the middle-pressing and holding jaw is greater than the conveying speed of the rear-pressing and holding active continuous conveying jaw, in the rear drafting area between the rear-pressing and holding active continuous conveying jaw and the middle-pressing and holding jaw, the difference between the conveying speed of the middle-pressing and holding jaw and the conveying speed of the rear-pressing and holding active continuous conveying jaw generates a second drafting force on the staple roving 1, and under the action of the second drafting force, the speed of the middle-pressing and holding jaw is reduced. In the dynamic balance process, the middle-pressing and holding jaw in the drafting system is finally conveyed at the second steady-state speed, and the second steady-state speed is comprehensively determined by the first steady-state speed and the conveying speed of the rear-pressing and holding active continuous conveying jaw, so that the middle-pressing and holding jaw is finally transformed into the middle-pressing and holding jaw. The passive continuous conveying jaws are pressed and gripped, and at this time, the staple roving 1 is subjected to the stretching effect of the third stretching force generated by the difference between the conveying speed of the front pressing and gripping active continuous conveying jaws and the conveying speed of the middle pressing and gripping passive continuous conveying jaws in the rear stretching zone, and is subjected to the stretching effect of the sum of the first stretching force and the third stretching force in the front stretching zone, so that the staple roving 1 obtains the first staple fiber strip with reduced linear density under the stretching effect of the third stretching force in the rear stretching zone, and the first staple fiber strip obtains the first staple fiber strand with reduced linear density under the stretching effect of the sum of the first stretching force and the third stretching force in the front stretching zone, thereby adaptively distributing the total draft between the rear stretching roller pair and the front stretching roller pair into the rear stretching zone between the rear stretching roller pair and the middle stretching roller pair, and the front stretching zone between the middle stretching roller pair and the front stretching roller pair, so as to realize the adaptive adjustment of the draft multiple distribution in the stretching process;

[0025] When the rear lower roller 2 is selected as the passive lower roller, the corresponding middle lower roller 4 and front lower roller 6 are both active lower rollers, and the first servo motor 15 drives the roller shaft of the middle lower roller 4 to rotate, and then drives the rubber roller cover 14 of the middle upper rubber roller 5 which is in close pressing contact with it to rotate, so that the middle pressing and holding jaw is transformed into the middle pressing and holding active continuous conveying jaw, and the second servo motor 16 drives the roller shaft of the front lower roller 6 to rotate, and then drives the rubber roller cover 14 of the front upper rubber roller 7 which is in close pressing contact with it to rotate, so that the front pressing and holding jaw is transformed into the front pressing and holding active continuous conveying jaw, and the speed of the second servo motor 16 is set to be greater than the speed of the first servo motor 15. At this time, the rear lower roller 2 is in a stationary state, and the corresponding rear upper rubber roller 3 is also in a stationary state. Then, the rear pressing and holding jaws remain in their original state, and the staple roving 1 unwound from the roving tube passes through the rear pressing and holding jaws, the middle pressing and holding active continuous conveying jaws, and the front pressing and holding active continuous conveying jaws in sequence, thereby completing the drafting process in the drafting system. In this process, in the initial stage, the staple roving 1 is held by the middle pressing and holding active continuous conveying jaws after passing through the rear pressing and holding jaws which are in a stationary state in the initial stage, and is continuously conveyed into the drafting system at a certain speed, and is finally held by the front pressing and holding active continuous conveying jaws and continuously output from the drafting system at a certain speed. When the staple roving 1 passes through the rear pressing and holding jaws which are in a stationary state in the initial stage, the head end of the staple roving 1 is held by the middle pressing and holding active continuous conveying jaws in the rear drafting area of ​​the drafting system. The pressing and holding jaws actively and continuously convey the yarn forward at a certain speed. Due to the holding force of the rear pressing and holding jaws on the staple yarn 1, the staple yarn 1 conveyed forward generates a forward driving force on the rear pressing and holding jaws in a static state. When the forward driving force generated is greater than the passive driving resistance of the pressing and holding jaws, the rear pressing and holding jaws begin to change from a static state to a moving state. The passive driving resistance of the pressing and holding jaws is determined by the friction resistance between the rubber roller sleeve 14 of the rear upper rubber roller 3 and the rubber roller shaft 13, the friction resistance between the roller sleeve of the rear lower roller 2 and the roller shaft, and the pressing force between the rubber roller sleeve 14 of the rear upper rubber roller 3 and the roller sleeve of the rear lower roller 2. The conveying speed of the rear pressing and holding jaw is continuously increased. When the difference between the conveying speed of the rear pressing and holding jaw and the conveying speed of the middle pressing and holding active continuous conveying jaw generates a fourth stretching force on the staple roving 1 that is equal to the passive driving resistance of the pressing and holding of the rear pressing and holding jaw, wherein the magnitude of the fourth stretching force is determined by the passive driving resistance of the pressing and holding of the rear pressing and holding jaw, the rear pressing and holding jaw is conveyed at a third steady-state speed in the finishing and stretching zone between the rear pressing and holding jaw and the middle pressing and holding active continuous conveying jaw, wherein the third steady-state speed is jointly determined by the conveying speed of the middle pressing and holding active continuous conveying jaw and the passive driving resistance of the pressing and holding of the rear pressing and holding jaw, so that the rear pressing and holding jaw is transformed into the passive continuous conveying jaw.Thus, in the finishing and stretching area between the rear pressing and holding passive continuous conveying jaw and the middle pressing and holding active continuous conveying jaw, the short fiber roving 1 obtains a second short fiber strip with reduced linear density under the stretching action of the fourth stretching force, thereby realizing the adaptive finishing and stretching of the fed roving before the main stretching, and in the main stretching area between the middle pressing and holding active continuous conveying jaw and the front pressing and holding active continuous conveying jaw, the second short fiber strip obtains a second short fiber strip with reduced linear density under the action of the fifth stretching force generated by the difference between the conveying speed of the middle pressing and holding active continuous conveying jaw and the conveying speed of the front pressing and holding active continuous conveying jaw;

[0026] The first staple fiber sliver or the second staple fiber sliver output by the drafting system is twisted under the action of the twisting twist transmitted from the spinning frame twisting system to obtain the final spun yarn, and the spun yarn is wound on the spun yarn tube 21 in a clockwise or counterclockwise direction. In this process, the main motor drives all the spindles to rotate through the spindle belt, and then drives the spun yarn tube 21 to rotate. The rotation of the spun yarn tube 21 then drives the spun yarn to pass through the yarn guide hook 18 and the wire ring 19 in turn and be wound on the spun yarn tube 21, so that the wire ring 19 rotates around the steel collar 20. At this time, due to the flexible structure of the spun yarn and the weight of the wire ring 19 itself, the winding speed of the spun yarn on the spun yarn tube 21 is less than the rotation speed of the spun yarn tube 21. The speed difference between the two produces twisting twist, and the generated twisting twist is transmitted from bottom to top. When it is transmitted to the twisting point, the first staple fiber sliver or the second staple fiber sliver is twisted under the action of the twisting twist to obtain the required spun yarn.

[0027] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made according to the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. An adaptive draft spinning method, characterized in that: An adaptive drafting spinning device is adopted, and the adaptive drafting spinning device includes a drafting system, and the drafting system includes three rows of drafting rollers: a rear drafting roller pair, a middle drafting roller pair, and a front drafting roller pair. The rear drafting roller pair includes a rear lower roller and a rear upper rubber roller, the middle drafting roller pair includes a middle lower roller and a middle upper rubber roller, and the front drafting roller pair includes a front lower roller and a front upper rubber roller. One of the middle lower roller or the rear lower roller is a passive lower roller, and the remaining rear lower roller, the front lower roller or the middle lower roller, and the front lower roller are active lower rollers. The passive lower roller includes a passive roller shaft and a passive row sleeve. The rear car table and the front car table of the spinning frame The roller shafts of the passive lower rollers of all spindle positions are integrally connected, the passive roller sleeve is sleeved on the passive roller shaft through the lower connecting bearing, the active lower roller includes an active roller shaft and an active roller sleeve, the roller shafts of the active lower rollers of the 8 spindle positions on the front car table of the spinning frame are integrally connected, the roller shafts of the active lower rollers of the 8 spindle positions on the rear car table of the spinning frame are integrally connected, the roller shafts of two adjacent active lower rollers are drivably connected through a roller seat, the active roller sleeve is fixedly sleeved on the active roller shaft, and the active roller shaft of the active lower roller is driven to rotate by a first servo motor and a second servo motor respectively; When the middle lower roller is selected as the passive lower roller, the middle pressing and holding jaw between the stationary middle lower roller and the middle upper rubber roller is first driven by the front pressing and holding active continuous conveying jaw between the rotating front lower roller and the front upper rubber roller, and then rotates at a first steady-state speed, and then adaptively adjusted with the rear pressing and holding active continuous conveying jaw between the rotating rear lower roller and the rear upper rubber roller, and rotates at a second steady-state speed, so that the total draft between the rear drafting roller pair and the front drafting roller pair is adaptively distributed into a rear drafting zone between the rear drafting roller pair and the middle drafting roller pair, and a front drafting zone between the middle drafting roller pair and the front drafting roller pair, so as to realize adaptive adjustment of the draft multiple distribution during the drafting process; When the rear lower roller is selected as the passive lower roller, the rear pressing and holding jaw between the stationary rear lower roller and the rear upper rubber roller is driven by the middle pressing and holding active continuous conveying jaw between the rotating middle lower roller and the middle upper rubber roller to rotate at a third steady-state speed, and a finishing and stretching zone is formed between the rear pressing and holding passive continuous conveying jaw and the middle pressing and holding active continuous conveying jaw, so as to realize adaptive finishing and stretching of the fed roving before the main stretching, and a main stretching zone is formed between the middle pressing and holding active continuous conveying jaw and the front pressing and holding active continuous conveying jaw, and the short fiber roving is subjected to the main stretching action of the main stretching zone to obtain short fiber strands with reduced linear density.

2. The adaptive draft spinning method according to claim 1, characterized in that: The passive roller sleeve is made of iron or steel, and the active roller sleeve is made of iron or steel.

3. The adaptive stretch spinning method according to claim 1, characterized in that: The first servo motor and the second servo motor are both connected to a programmable logic controller.

4. The adaptive draft spinning method according to claim 1, characterized in that: The rear upper glue roller, the middle upper glue roller and the front upper glue roller have the same structure and are all arranged on the pressure assembly.

5. The adaptive draft spinning method according to claim 4, characterized in that: After the pressure-applying assembly is pressed downward, the rubber roller sleeve of the rear upper rubber roller is in close pressing contact with the roller sleeve of the rear lower roller, and a rear pressing and holding jaw is formed between the rubber roller sleeve of the rear upper rubber roller and the roller sleeve of the rear lower roller, and the rear pressing and holding jaw maintains a certain pressing and holding force; the rubber roller sleeve of the middle upper rubber roller is in close pressing contact with the roller sleeve of the middle lower roller, and a middle pressing and holding jaw is formed between the rubber roller sleeve of the middle upper rubber roller and the roller sleeve of the middle lower roller, and the middle pressing and holding jaw maintains a certain pressing and holding force; the rubber roller sleeve of the front upper rubber roller is in close pressing contact with the roller sleeve of the front lower roller, and a front pressing and holding jaw is formed between the rubber roller sleeve of the front upper rubber roller and the roller sleeve of the front lower roller, and the front pressing and holding jaw maintains a certain pressing and holding force.

6. The adaptive draft spinning method according to claim 5, characterized in that: When the middle lower roller is selected as the passive lower roller, the corresponding rear lower roller and the front lower roller are both active lower rollers, and the first servo motor drives the roller shaft of the rear lower roller to rotate, and drives the rubber roller sleeve of the rear upper rubber roller in close pressing contact with it to rotate, so that the rear pressing and holding jaw is transformed into a rear pressing and holding active continuous conveying jaw, and the second servo motor drives the roller shaft of the front lower roller to rotate, and drives the rubber roller sleeve of the front upper rubber roller in close pressing contact with it to rotate, so that the front pressing and holding jaw is transformed into a front pressing and holding active continuous conveying jaw, and the speed of the second servo motor is set to be greater than the speed of the first servo motor. At this time, the middle lower roller is in a stationary state, and the corresponding middle upper rubber roller is also in a stationary state. The static state makes the middle pressing and holding jaw still maintain its original state, and the short-fiber roving unwound from the roving tube passes through the rear pressing and holding active continuous conveying jaw, the middle pressing and holding jaw, and the front pressing and holding active continuous conveying jaw in sequence to complete the drafting process in the drafting system. During this process, in the initial stage, the short-fiber roving is firstly held by the rear pressing and holding active continuous conveying jaw and continuously conveyed into the drafting system at a certain speed, and finally held by the front pressing and holding active continuous conveying jaw and continuously output from the drafting system at a certain speed. When the short-fiber roving passes through the middle pressing and holding jaw which is in a static state in the initial stage, the head end of the short-fiber roving is firstly held in the drafting system. The front pressing and holding active continuous conveying jaw holds and actively and continuously outputs the drafting system forward at a certain speed. Due to the holding force of the middle pressing and holding jaw on the staple roving, the staple roving conveyed forward generates a forward driving force on the middle pressing and holding jaw in a stationary state. When the generated forward driving force is greater than the passive driving resistance of the pressing and holding of the middle pressing and holding jaw, the middle pressing and holding jaw starts to change from a stationary state to a moving state, and the conveying speed of the middle pressing and holding jaw increases continuously. When the difference between the conveying speed of the middle pressing and holding jaw and the conveying speed of the front pressing and holding active continuous conveying jaw is equal to the first drafting force generated on the staple roving by the middle pressing and holding jaw, the first drafting force generated by the middle pressing and holding jaw on the staple roving is equal to the first drafting force generated by the middle pressing and holding jaw. When the pressing and holding of the holding jaws passively drives resistance, the middle pressing and holding jaws conveys at a first steady-state speed in the front stretching zone between the middle pressing and holding jaws and the front pressing and holding active continuous conveying jaws, and the first steady-state speed is greater than the conveying speed of the rear pressing and holding active continuous conveying jaws. At the same time, in the drafting system, the tail end of the staple roving is held by the rear pressing and holding active continuous conveying jaws and actively and continuously input forward into the drafting system at a certain speed. At this time, since the first steady-state speed of the middle pressing and holding jaws is greater than the conveying speed of the rear pressing and holding active continuous conveying jaws, in the rear stretching zone between the rear pressing and holding active continuous conveying jaws and the middle pressing and holding jaws,The difference between the conveying speed of the middle pressing and holding jaw and the conveying speed of the rear pressing and holding active continuous conveying jaw generates a second stretching force on the staple roving, and under the action of the second stretching force, the speed of the middle pressing and holding jaw is reduced, and in the dynamic balance process, the middle pressing and holding jaw is finally conveyed at a second steady-state speed in the drafting system, and finally the middle pressing and holding jaw is transformed into a middle pressing and holding passive continuous conveying jaw, and at this time, the staple roving is subjected to the stretching effect of the third stretching force generated by the difference between the conveying speed of the front pressing and holding active continuous conveying jaw and the conveying speed of the middle pressing and holding passive continuous conveying jaw in the rear stretching area. The short fiber roving is subjected to the drafting effect of the sum of the first drafting force and the third drafting force in the front drafting zone, so that the short fiber roving is subjected to the drafting effect of the third drafting force in the rear drafting zone to obtain the first short fiber strip with reduced linear density, and the first short fiber strip is subjected to the drafting effect of the sum of the first drafting force and the third drafting force in the front drafting zone to obtain the first short fiber strand with reduced linear density, and the total draft between the rear drafting roller pair and the front drafting roller pair is adaptively distributed into the rear drafting zone between the rear drafting roller pair and the middle drafting roller pair, and the front drafting zone between the middle drafting roller pair and the front drafting roller pair, so as to realize the adaptive adjustment of the draft multiple distribution in the drafting process.

7. The adaptive draft spinning method according to claim 5, characterized in that: When the rear lower roller is selected as the passive lower roller, the corresponding middle lower roller and the front lower roller are both active lower rollers, and the first servo motor drives the roller shaft of the middle lower roller to rotate, and drives the rubber roller sleeve of the middle upper rubber roller in close pressing contact with it to rotate, so that the middle pressing and holding jaw is transformed into a middle pressing and holding active continuous conveying jaw, and the second servo motor drives the roller shaft of the front lower roller to rotate, and drives the rubber roller sleeve of the front upper rubber roller in close pressing contact with it to rotate, so that the front pressing and holding jaw is transformed into a front pressing and holding active continuous conveying jaw, and the rotation speed of the second servo motor is set to be greater than the rotation speed of the first servo motor. At this time, the rear lower roller is in a stationary state, and the corresponding rear upper rubber roller is also in a stationary state. state, and then the rear pressing and holding jaws remain in the original state, and the short-fiber roving unwound from the roving tube passes through the rear pressing and holding jaws, the middle pressing and holding active continuous conveying jaws, and the front pressing and holding active continuous conveying jaws in sequence, thereby completing the drafting process in the drafting system. In this process, in the initial stage, after passing through the rear pressing and holding jaws which are in a stationary state in the initial stage, the short-fiber roving is held by the middle pressing and holding active continuous conveying jaws and continuously conveyed into the drafting system at a certain speed, and finally held by the front pressing and holding active continuous conveying jaws and continuously output from the drafting system at a certain speed. When the short-fiber roving passes through the rear pressing and holding jaws which are in a stationary state in the initial stage, The head end of the staple roving in the rear stretching area of ​​the stretching system is gripped by the middle press-grip active continuous conveying jaw and actively and continuously conveyed forward at a certain speed. Due to the gripping force of the rear press-grip jaw on the staple roving, the staple roving conveyed forward generates a forward driving force on the rear press-grip jaw in a stationary state. When the forward driving force generated is greater than the passive driving resistance of the rear press-grip jaw, the rear press-grip jaw begins to change from a stationary state to a moving state, and the conveying speed of the rear press-grip jaw increases continuously. When the difference between the conveying speed of the rear press-grip jaw and the conveying speed of the middle press-grip active continuous conveying jaw is greater than the conveying speed of the middle press-grip jaw, a fourth stretching force is generated on the staple roving. When the pressure is equal to the passive driving resistance of the pressing and holding jaw of the rear pressing and holding jaw, the rear pressing and holding jaw is transported at a third steady-state speed in the finishing and stretching area between the rear pressing and holding jaw and the middle pressing and holding active continuous conveying jaw, so that the rear pressing and holding jaw is transformed into a rear pressing and holding passive continuous conveying jaw, so that in the finishing and stretching area between the rear pressing and holding passive continuous conveying jaw and the middle pressing and holding active continuous conveying jaw, the short fiber roving obtains a second short fiber strip with reduced linear density under the stretching action of the fourth stretching force, thereby realizing adaptive finishing and stretching of the fed roving before the main stretching, and in the main stretching area between the middle pressing and holding active continuous conveying jaw and the front pressing and holding active continuous conveying jaw,The second staple fiber strip is subjected to the fifth drafting force generated by the difference between the conveying speed of the middle pressing and holding active continuous conveying jaw and the conveying speed of the front pressing and holding active continuous conveying jaw to obtain a second staple fiber strip with reduced linear density.

8. The adaptive draft spinning method according to claim 1, characterized in that: The active roller sleeves between two adjacent spindle positions maintain a certain distance.

9. The adaptive draft spinning method according to claim 1, characterized in that: The structures of the rear upper rubber roller, the middle upper rubber roller and the front upper rubber roller are the same. The rear upper rubber roller, the middle upper rubber roller and the front upper rubber roller include rubber roller shafts, which are made of iron or steel. The rubber roller shafts are solid cylindrical structures. A spindle position on the front car table of the spinning frame and an adjacent spindle position on the left or right side form a spindle group, and a spindle position on the rear car table of the spinning frame and an adjacent spindle position on the left or right side form a spindle group. The rubber roller shafts of the two spindles of each spindle group on the front car table of the spinning frame are integrally connected, the rubber roller shafts of the middle upper rubber roller are integrally connected, and the rubber roller shafts of the front upper rubber roller are integrally connected. The rubber roller shafts of the two spindles of each spindle group on the rear car table of the spinning frame are integrally connected, the rubber roller shafts of the middle upper rubber roller are integrally connected, and the rubber roller shafts of the front upper rubber roller are integrally connected. Then, a rubber roller sleeve is sleeved on the rubber roller shaft, and the rubber roller sleeve is made of rubber, and the rubber roller sleeve is connected to the rubber roller shaft through a lower connecting bearing, a certain distance is maintained between the rubber roller sleeves of the rear upper rubber rollers of two ingots in one ingot group, and the rubber roller shaft between the rubber roller sleeves of the rear upper rubber roller between two ingots in one ingot group is embedded in the rear embedding grip of the pressure component, a certain distance is maintained between the rubber roller sleeves of the middle upper rubber rollers between two ingots in one ingot group, and the rubber roller shaft between the rubber roller sleeves of the middle upper rubber rollers of two ingots in one ingot group is embedded in the middle embedding grip of the pressure component, a certain distance is maintained between the rubber roller sleeves of the front upper rubber rollers between two ingots in one ingot group, and the rubber roller shaft between the rubber roller sleeves of the front upper rubber rollers of two ingots in one ingot group is embedded in the front embedding grip of the pressure component.

Images