Double seat type collective doffing and grasping device

Abstract

This invention discloses a double-seat collective doffing bobbin gripper, specifically relating to the field of spinning technology. It includes a support frame, on which a guiding bobbin gripping assembly is mounted. The guiding bobbin gripping assembly includes a turntable rotatably mounted in the middle of the support frame, with two support discs rotatably connected to the surface of the turntable to form a double-seat structure. This invention employs a synchronous adjustment structure using an electric push rod linked to a traction rod, which can drive all bobbin gripping insertion posts and yarn clamping components to radially expand or contract synchronously, eliminating the need for individual component adjustments. This achieves one-button synchronous control of the yarn clamp position, simplifying the adaptation process under different working conditions and improving the convenience and consistency of adjustment. Simultaneously, the dual-support disc, dual-station structure allows the insertion station and doffing station to operate simultaneously and independently, eliminating the need for sequential waiting at a single station, thus solving the problem of low efficiency in traditional single-station systems and providing a foundation for high-speed continuous doffing.

Description

Technical Field

[0001] This invention relates to the field of spinning technology, and more specifically, to a double-seat collective doffing bobbin gripper. Background Technology

[0002] The winding machine is a core piece of specialized equipment in the textile industry. As the final step in spinning and the first step in weaving, the winding process plays a crucial role in the entire textile process, occupies an important position. The main functions of the winding machine include changing the yarn package shape, increasing package capacity, removing yarn defects, and improving yarn quality. It is a fundamental link in ensuring the quality and efficiency of subsequent weaving processes.

[0003] Among them, patent CN212076007U discloses an automatic yarn insertion robot device. This device, through components such as a frame assembly, a hydraulic lifting trolley, a conveying mechanism, and a shuttle-feeding manipulator, achieves mechanized yarn tube conveying, reduces manual handling, improves production efficiency to a certain extent, and reduces the labor intensity and labor costs of manual yarn feeding, providing a feasible solution for the automated production of winding machines. However, the position adjustment of the yarn clamps in the device is inconvenient and cannot be precisely controlled according to the working conditions when the yarn clamps release yarn; secondly, the relative positions of the yarns on different yarn tubes are different, and the existing structure is difficult to adapt to changes in the yarn position; finally, the yarn clamps cannot achieve synchronous linkage adjustment, affecting the consistency and continuity of the operation, and making it difficult to fully meet the high-efficiency, stable, and precise production requirements of modern winding processes. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a double-seat collective doffing tube gripper, including a support frame, on which a tube guiding and gripping component is provided; The dredging and gripping assembly includes a turntable rotatably disposed in the middle of the support frame. Two support discs are rotatably connected to the surface of the turntable to form a double-seat structure. Each support disc has a plurality of radially extending grooves, and a dredging block is slidably connected in each of the grooves. One end of the guiding block is rotatably connected to a rotating ring. A tube-grabbing post for inserting into the yarn tube is fixedly installed on the rotating ring. The tube-grabbing post is frustum-shaped to achieve automatic centering when inserting into the yarn tube. The small-diameter end of the tube-grabbing post is provided with a yarn-guiding clamp for combing the yarn. The yarn can pass through the yarn-guiding clamp, the tube-grabbing post and the guiding block in sequence to complete the guiding.

[0005] Furthermore, the dredging and gripping pipe assembly also includes a support sleeve disposed on one side of the support plate, and a plurality of traction rods are hinged to the outer side of the support sleeve, with the free end of each traction rod being hinged to a corresponding dredging block. The support plate is equipped with an electric push rod, the output end of which is connected to the support sleeve and is used to drive the support sleeve to move axially along the support plate. In turn, the traction rod drives the guide block, the rotating ring and the pipe-grabbing column to move radially along the slide groove, so as to realize the synchronous linkage adjustment of multiple sets of pipe-grabbing columns.

[0006] Furthermore, the turntable has several gathering holes that are opened through it, and each gathering hole is coaxially arranged with the corresponding support plate to gather the yarn conveyed by the yarn tube on the single gripping tube insertion post. A gear is fixedly arranged on the side of the turntable facing the support plate.

[0007] Furthermore, the gear is rotatably connected to a limiting ring on the side away from the turntable, and an installation cavity is provided on the support frame. The turntable is rotatably connected to the installation cavity, and the limiting ring is fixed to the inner wall of the installation cavity. The outer side of the support plate is in sliding frictional engagement with the inner wall of the limiting ring, so that when the turntable drives the support plate to revolve, the support plate rotates axially along the gathering hole.

[0008] Furthermore, a toothed belt meshes with the outer side of the gear, a servo motor is provided on one side of the surface of the support frame, and a pulley is provided at the output end of the servo motor. The pulley is connected to the toothed belt drive and is used to drive the toothed belt, gear and turntable to rotate synchronously to realize the work position switching of the support plate.

[0009] Furthermore, a number of combing holes are provided on one side of the support frame. The combing holes are distributed circumferentially along the axis of the turntable and are used to fix and place spare yarn tubes.

[0010] Furthermore, an electric slide rail is provided on one side of the support frame, and an adjustable column is slidably connected to the electric slide rail.

[0011] Furthermore, a mounting plate is fixed to the top of the column, and a telescopic cylinder is provided on one side of the mounting plate. A tensioning rod is hinged to the output end of the telescopic cylinder, and the middle part of the tensioning rod is hinged to the mounting plate. The telescopic cylinder is used to drive the tensioning rod to deflect, so as to tension the yarn conveyed by the yarn tube on the gripping tube insertion column.

[0012] Furthermore, a clamping cylinder is provided on one side of the mounting plate, and a cutting blade is provided at the output end of the clamping cylinder to drive the cutting blade to move and complete the yarn cutting.

[0013] Furthermore, the guide block, rotating ring, pipe gripping post, and cable management clamp are coaxially arranged, the cable management clamp is threadedly connected to the pipe gripping post, and the outer side of the pipe gripping post is fitted with a rubber sleeve for anti-slip buffering.

[0014] The technical effects and advantages of this invention are as follows: 1. This invention adopts a synchronous adjustment structure of electric push rod linked to traction rod, which can drive all tube-grabbing and inserting columns and yarn-clamping components to expand or retract radially synchronously without the need to adjust individual components. This achieves one-button synchronous control of the yarn clamping device position, simplifies the adaptation process under different working conditions, and improves the convenience and consistency of adjustment. At the same time, it adopts a dual-support plate dual-station structure, where the tube insertion station and the yarn doffing station can operate independently at the same time without waiting for each station to operate sequentially. This solves the problem of low efficiency in traditional single-station systems and provides the basic conditions for high-speed continuous yarn doffing.

[0015] 2. This invention relies on a three-stage yarn guiding system consisting of a yarn guide clamp, a central through hole, and a gathering hole. Combined with the autonomous rotation design of the support plate during its revolution, it can automatically straighten the yarn path according to the changes in yarn position, reducing yarn twisting and tangling, and providing a stable yarn foundation for subsequent yarn feeding operations. At the same time, it adopts a symmetrical layout of two seats and two workstations, allowing the tube insertion workstation and the yarn feeding workstation to work alternately, eliminating the waiting time during workstation switching. With the spare yarn tube storage structure, continuous operation of the yarn feeding operation is realized. In conjunction with the aforementioned synchronous adjustment structure, it further improves the overall efficiency of collective yarn feeding.

[0016] 3. The tube-gripping insertion post of this invention adopts a frustum-shaped centering structure, combined with an outer rubber sleeve for anti-slip gripping, to achieve rapid and accurate insertion and firm clamping of the yarn tube, avoiding yarn tube detachment and eccentricity during transportation; the stable clamping effect provides a reliable foundation for synchronous linkage adjustment and dual-station transportation, avoiding malfunctions caused by clamping failure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0018] Figure 1 This is a front view of the overall structure of the present invention.

[0019] Figure 2 This is a side view of the support frame, pipe gripping column, column, mounting plate, telescopic cylinder, tensioning rod, support sleeve and servo motor of the present invention installed on one side.

[0020] Figure 3 This is a schematic diagram of the support plate, traction rod, electric push rod, swivel ring, pipe gripping post, cable management clamp and slide groove of the present invention.

[0021] Figure 4 For the present invention Figure 3Exploded view.

[0022] Figure 5 This is a schematic diagram of the support frame, mounting cavity, and combing holes of the present invention.

[0023] Figure 6 This is a schematic diagram of the turntable, gathering hole, gear, limiting ring, and toothed belt of the present invention.

[0024] Figure 7 This is a schematic diagram of the column, mounting plate, telescopic cylinder, tensioning rod, clamping cylinder and cutting blade of the present invention.

[0025] The attached diagram is labeled as follows: 1. Support frame; 2. Turntable; 3. Support plate; 4. Support sleeve; 5. Traction rod; 6. Guide block; 7. Rotary ring; 8. Pipe gripping post; 9. Cable clamp; 10. Slide groove; 11. Electric push rod; 12. Mounting cavity; 13. Gear; 14. Limiting ring; 15. Toothed belt; 16. Servo motor; 17. Combing hole; 18. Gathering hole; 19. Electric slide rail; 20. Column; 21. Mounting plate; 22. Telescopic cylinder; 23. Tensioning rod; 24. Clamping cylinder; 25. Cutting knife. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Example 1

[0027] like Figure 1 , Figure 2 and Figure 5 As shown, the basic supporting component in this embodiment is the support frame 1, which is made of hard alloy profile and has an overall frame structure, providing an installation reference and rigid support for all moving parts. A circular mounting cavity 12 is provided at the center of the support frame 1. The mounting cavity 12 provides rotational mounting space for the guide tube gripping assembly. Its inner wall is smooth and is used to cooperate with the limiting ring 14 to achieve positioning and fixation. An electric slide rail 19 is horizontally fixed on one side of the support frame 1. The electric slide rail 19 adopts a servo-driven linear guide rail, which has the characteristics of precise positioning and smooth movement. It is used to drive the yarn tension and realize the horizontal work position switching. The support frame 1 serves as the base of the whole machine, ensuring the coaxiality and parallelism of all moving parts, avoiding jamming or offset during rotation and sliding, and ensuring the stability of the doffing operation.

[0028] The tube-grabbing and unwinding assembly is the core functional component of this invention. It adopts a symmetrical layout with two seats and two support plates to achieve synchronous tube grabbing and yarn doffing at two workstations, greatly improving work efficiency. Its specific structure and motion principle are as follows: Rotary drive and revolution mechanism like Figure 6As shown, a turntable 2 is rotatably mounted inside the mounting cavity 12. The turntable 2 is a circular rigid disc, with a gear 13 coaxially fixedly connected to its bottom. The gear 13 rotates synchronously with the turntable 2. The outer ring of the gear 13 meshes with a closed-loop toothed belt 15. A servo motor 16 is fixedly mounted on the top outer side of the support frame 1. A transmission pulley is fixedly mounted on the output shaft of the servo motor 16. The pulley is embedded in the bottom of the inner cavity of the toothed belt 15 and is connected to the toothed belt 15 through friction transmission. When the servo motor 16 is powered on and rotates, it drives the toothed belt 15 to perform a closed-loop motion through the pulley. The toothed belt 15 drives the gear 13 and the turntable 2 to perform a 180° circumferential revolution within the mounting cavity 12, realizing the switching of the work positions of the dual support discs 3. The servo motor 16 has a brake function, which can accurately lock the turntable 2 at the tube insertion position and the yarn doffing position to ensure positioning accuracy.

[0029] The gear 13 is rotatably connected to the limiting ring 14 on the side away from the turntable 2. The limiting ring 14 is fixed to the inner wall of the mounting cavity 12 by bolts. The inner ring of the limiting ring 14 slides and fits against the outer ring of the support plate 3, which not only limits the rotation trajectory of the turntable 2, but also provides the self-rotation friction force for the support plate 3. In addition, rubber rings can be added to the inner ring of the limiting ring 14 and the outer ring of the support plate 3 to improve the friction between the two sets.

[0030] Double-seat support plate and rotation mechanism like Figure 3 , Figure 4 and Figure 6 As shown, the upper surface of the turntable 2 is symmetrically connected to two support plates 3, forming a dual-station design. One station performs tube insertion, while the other performs yarn doffing and cutting. The two stations operate alternately, eliminating idle waiting time. The outer ring of the support plate 3 and the inner ring of the limiting ring 14 are made of a high-friction coefficient material. When the turntable 2 drives the support plate 3 to revolve, the support plate 3 rotates autonomously along its own axis under the action of friction. The revolve of the support plate 3 realizes the transfer of the workstation, while its rotation drives the tube-grabbing insertion post 8 to rotate synchronously, dynamically combing the yarn and preventing it from twisting or tangling during transfer, ensuring a smooth yarn conveying path. The single tube-grabbing insertion post 8 is rotatably connected to the guide block 6 through the rotating ring 7, which is used to reduce the active state of the single tube-grabbing insertion post 8 when conveying yarn after grabbing the tube, thus preventing the yarn from breaking due to excessive tension during conveying.

[0031] synchronous linkage adjustment mechanism for pipe gripping and insertion like Figure 3 and Figure 4As shown, each support plate 3 has several radially extending grooves 10 on its surface. The grooves 10 have a dovetail structure to prevent the guide blocks 6 from derailing when sliding. Each groove 10 has a guide block 6 slidably connected inside, and the guide block 6 can make pure radial linear displacement along the groove 10. An electric push rod 11 is fixedly installed at the center of the support plate 3. The output end of the electric push rod 11 is coaxially fixed with a support sleeve 4. Several traction rods 5 are hinged to the outer ring of the support sleeve 4. The number of traction rods 5 is the same as the number of guide blocks 6. The free end of each traction rod 5 is hinged to the side wall of the corresponding guide block 6. When the electric push rod 11 extends and retracts along the axial direction of the support plate 3, it drives the support sleeve 4 to move axially. The traction rods 5 deflect at an angle with the support sleeve 4, thereby synchronously pulling all the guide blocks 6 to slide radially along the grooves 10, realizing the synchronous expansion / contraction of all the tube gripping posts 8. It can adapt to yarn tubes with different inner diameters at one time without the need to adjust individual tube gripping components, solving the defects of traditional tube grippers that are cumbersome to adjust and not synchronized. Example 2

[0032] Based on Example 1, this example discloses a cannula centering and yarn guiding mechanism; like Figure 3 and Figure 4 As shown, the end of the guide block 6 furthest from the center of the support plate 3 is rotatably connected to the rotating ring 7. The rotating ring 7 can rotate freely, and the end face of the rotating ring 7 is coaxially fixed to the yarn tube insertion post 8. The yarn tube insertion post 8 has a frustum-shaped structure, with the smaller diameter end facing the yarn tube and the larger diameter end fixed to the rotating ring 7. The frustum structure can achieve automatic centering when inserting the yarn tube without manual alignment. A rubber sleeve is fitted on the outside of the yarn tube insertion post 8. The rubber sleeve undergoes elastic deformation due to the pressure of the inner wall of the yarn tube, increasing the frictional resistance with the yarn tube and preventing the yarn tube from slipping or shaking during insertion, transfer, and unwinding. The small diameter end of the yarn tube insertion post 8 is threadedly connected to the yarn guide clamp 9. The yarn guide clamp 9 is a detachable clamping structure used for initial orientation combing of the yarn. The guide block 6, rotating ring 7, tube gripping post 8, and thread clamp 9 are coaxially arranged, and each has a through hole in the center. The yarn can pass through the through holes in the center of the thread clamp 9, tube gripping post 8, and guide block 6 in sequence to achieve directional conveying. The rotating ring 7's self-rotation design allows the tube gripping post 8 to rotate freely with the yarn traction, adapting to the yarn winding angle and preventing yarn twisting and breakage. The centering function of the frustum-shaped tube gripping post 8 ensures that the yarn tube and the tube gripping post 8 are coaxial, improving tube gripping stability.

[0033] Storage tube and yarn gathering auxiliary components like Figure 5 and Figure 6As shown, the surface of the turntable 2 has several gathering holes 18, which are coaxially arranged with the corresponding support plate 3. The diameter of the holes is slightly larger than the diameter of the yarn, and they are used to gather and tighten the yarn on a single gripping tube insert 8 to prevent multiple yarns from intertwining. Several combing holes 17 are provided at the edge of the turntable 2. The combing holes 17 are evenly distributed around the circumference of the turntable 2 along the axis, and the diameter of the holes matches the outer diameter of the spare yarn tube. They are used to fix and place the spare yarn tube. After the yarn is dropped, the tube can be quickly replenished without stopping the machine to replace the tube. The gathering holes 18 realize the secondary guidance of the yarn, and the combing holes 17 realize the storage and initial guidance of the spare yarn tube. The two, together with the yarn clamp 9, form a three-level yarn guidance system, which avoids yarn tangling and knotting from the source.

[0034] like Figure 2 and Figure 7 As shown, a column 20 is fixedly installed on the slider of the electric slide rail 19. The column 20 is a vertical support structure, and a mounting plate 21 is horizontally fixed at its top. The mounting plate 21 provides an installation reference for the tensioning and cutting components.

[0035] A telescopic cylinder 22 is hinged to the upper side of the mounting plate 21. The output end of the telescopic cylinder 22 is hinged to a tension rod 23. The middle part of the tension rod 23 is hinged to the mounting plate 21, forming a lever-type swing structure. When the telescopic cylinder 22 extends, it pushes the tension rod 23 to deflect downward around the hinge point. The end of the tension rod 23 presses down on the yarn, so that the tension rod 23 abuts against the yarn on each gripping tube insert 8, tightening the loose yarn to a constant tension. The telescopic cylinder 22 can adjust the air pressure to adapt to yarns of different thicknesses and materials, avoiding the yarn from breaking due to excessive tightness or becoming loose.

[0036] A clamping cylinder 24 is fixed to the lower side of the mounting plate 21. A cutting blade 25 is fixed to the output end of the clamping cylinder 24. The cutting blade 25 has a combined function of clamping first and cutting later: when the clamping cylinder 24 extends, the cutting blade 25 first presses the yarn onto the support surface to prevent the yarn from slipping during cutting. Then it continues to feed to complete the precise cutting with a flat cut, which is convenient for subsequent winding and yarn splicing. After the cutting is completed, the clamping cylinder 24 and the telescopic cylinder 22 are reset in sequence, waiting for the next operation.

[0037] The specific working principle is as follows: like Figure 1 , Figure 5 and Figure 6 As shown, after the equipment is powered on, the servo motor 16 starts first and drives the toothed belt 15 to perform closed-loop rotation through the output pulley. The toothed belt 15 meshes with the gear 13, causing the turntable 2 to rotate circumferentially in the mounting cavity 12 of the support frame 1 until the double support plate 3 rotates to the initial tube insertion position. The servo motor 16 then engages the brake and locks, completing the initial positioning of the double-seat position.

[0038] At the same time, the electric slide rail 19 drives the column 20 to slide along the track to the initial standby position, the telescopic cylinder 22 and the clamping cylinder 24 are both in the retracted reset state, the tension rod 23 and the cutting blade 25 retract to the non-interference area; the electric push rod 11 is in the initial extended state, so that the support sleeve 4 fits against the support plate 3, the traction rod 5 drives the guide block 6 to move along the slide groove 10 to the center of the support plate 3, and the gripping pipe insertion column 8 retracts to the minimum spacing, completing the mechanical initialization of the whole machine.

[0039] like Figure 3 and Figure 4 As shown, the yarn tube to be unloaded is aligned with the small-diameter end of the gripping post 8 and pushed. The gripping post 8 adopts a frustum-shaped structure, with the small end guiding and the large end centering. The inner wall of the yarn tube automatically fits with the outer wall of the gripping post 8, achieving deviation-free centering insertion. A rubber sleeve is fitted on the outside of the gripping post 8. The rubber sleeve undergoes elastic deformation due to the pressure of the inner wall of the yarn tube, increasing the frictional resistance with the yarn tube and preventing the yarn tube from slipping or shaking during insertion, transfer, and unloading.

[0040] After insertion, the bottom of the yarn tube is in contact with the end face of the rotating ring 7. The rotating ring 7 is rotatably connected to the guide block 6, so that the gripping tube insertion post 8 can rotate freely with the yarn traction, adapt to the yarn winding angle, and avoid yarn twisting and breakage, so that the yarn passes through the yarn tube, the yarn guide clamp 9, the gripping tube insertion post 8 and the guide block 6 at the end of the yarn tube away from the gripping tube insertion post 8.

[0041] like Figure 3 and Figure 4 As shown, according to the inner diameter specification of the yarn tube, the electric push rod 11 is activated. The output end of the electric push rod 11 moves in an axial direction along the support plate 3, driving the support sleeve 4 to move synchronously axially. When the electric push rod 11 extends, the support sleeve 4 moves away from the support plate 3, the traction rod 5 deflects at an angle as the support sleeve 4 moves, and the end of the traction rod 5 pulls the guide block 6 to slide radially along the slide groove 10 toward the center of the support plate 3. All the tube gripping pins 8 retract synchronously, the spacing decreases, and it is suitable for small inner diameter yarn tubes. Electric push rod 11 retracts: support sleeve 4 moves toward support plate 3, traction rod 5 deflects in the opposite direction, guide block 6 slides radially along slide groove 10 toward the outside of support plate 3, all gripping tube inserts 8 expand outwards simultaneously, the spacing increases, and it is adapted to large inner diameter yarn tubes.

[0042] This adjustment process enables multiple sets of pipe gripping and insertion posts to be synchronously linked and positioned at one time, eliminating the need to adjust individual pipe gripping components separately, thus solving the problems of cumbersome and asynchronous adjustment of traditional pipe grippers.

[0043] like Figure 3 and Figure 6 As shown, after the yarn is drawn out from the yarn tube on the clamping post 8, it enters the three-stage guiding process: First-stage combing: The yarn first passes through the yarn guide clip 9, which is threadedly connected to the tube gripper insert 8 and can be disassembled and replaced. Its clamping opening initially orients the yarn to prevent it from becoming tangled. Secondary threading: The yarn passes through the central through hole of the gripping tube insert 8 and the central through hole of the guide block 6 in sequence, and is directionally conveyed along the axial direction of the gripping tube insert 8 to avoid the yarn from getting tangled with the gripping tube components; Three-stage gathering: After passing through the guide block 6, the yarn enters the gathering hole 18 on the turntable 2. The gathering hole 18 is coaxially set with the support plate 3 to gather and tighten the single yarn, preventing multiple yarns from intertwining and knotting.

[0044] Meanwhile, the combing holes 17 are distributed around the circumference of the turntable 2 to fix the spare yarn tube. The yarn in the spare yarn tube can be guided through the combing holes 17 at the same time, so as to quickly replenish the tube after the yarn is dropped, without stopping the machine to replace the tube.

[0045] like Figure 2 and Figure 6 As shown, after the intubation and drainage are completed, the servo motor 16 starts again, driving the turntable 2 to rotate the double support plate 3, thus realizing the workstation switching: Servo motor 16 drives pulley, toothed belt 15, gear 13 and turntable 2 to rotate. Double support plate 3 revolves around turntable 2, transferring the tube insertion station to the tensioning and cutting station. Empty station rotates back to tube insertion station, and the two stations work alternately. The outer side of the support plate 3 slides and rubs against the inner wall of the limiting ring 14. When the turntable 2 revolves, the support plate 3 is subjected to friction and rotates autonomously along the axis of the gathering hole 18. During the rotation, the yarn is further straightened to ensure uniform yarn tension and avoid yarn twisting due to revolution.

[0046] The limiting ring 14 is fixed to the inner wall of the mounting cavity 12, which not only limits the rotation trajectory of the turntable 2, but also provides frictional power for the rotation of the support plate 3. No additional driving components are required, and the structure is simplified.

[0047] like Figure 2 , Figure 7 As shown, after the support plate 3 is transferred to the tensioning and cutting station, the electric slide rail 19 drives the column 20 to slide precisely below the corresponding gripping column 8, and the telescopic cylinder 22 is activated to extend. The output end of the telescopic cylinder 22 pushes the tension rod 23. The tension rod 23 deflects in a lever manner with the hinge point with the mounting plate 21 as the fulcrum. The end of the tension rod 23 presses down on the yarn, tightening the loose yarn to the set tension. The telescopic cylinder 22 can output thrust through air pressure adjustment to achieve adaptive adjustment of yarn tension, adapting to yarns of different thicknesses and materials, and avoiding yarn breakage due to excessive tightness or looseness.

[0048] like Figure 7As shown, after the yarn is tensioned to the correct position, the clamping cylinder 24 starts to extend, driving the cutting blade 25 to move rapidly in the direction of the yarn. The cutting blade 25 first presses the yarn firmly against the support surface to complete the yarn positioning and prevent the yarn from slipping during cutting; The cutting blade 25 continues to feed, completing the precise cutting of the yarn. The cutting position is uniform, and the cut is flat, which facilitates the subsequent winding process of yarn splicing.

[0049] After cutting is completed, clamping cylinder 24 and telescopic cylinder 22 retract and reset in sequence, tension rod 23 and cutting blade 25 return to their original positions, waiting for the next operation.

[0050] After the cutting is completed, the electric push rod 11 moves in the opposite direction, the tube gripping post 8 retracts synchronously, the yarn tube separates from the tube gripping post 8, and the collective yarn doffing is completed under the action of gravity. After the doffing is completed, turntable 2 revolves again, empty support plate 3 rotates back to the tube insertion position, and the spare yarn tube in the combing hole 17 is quickly filled in, repeating the above tube insertion, adjustment, guidance, transfer, tensioning, cutting and doffing process. The dual support plate 3 forms a parallel dual-seat mode for the tube insertion station and the doffing station. When one station is working, the other station completes the tube replenishment preparation, realizing continuous, automated, and high-efficiency operation of the winding machine's collective doffing.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A double-seat collective doffing bobbin gripper, comprising a support frame (1), characterized in that: The support frame (1) is provided with a dredging and pipe-grabbing assembly; The dredging and gripping assembly includes a turntable (2) rotatably disposed in the middle of the support frame (1). Two support plates (3) are rotatably connected to the surface of the turntable (2). Each support plate (3) has a plurality of radially extending grooves (10) respectively. A dredging block (6) is slidably connected in each of the plurality of grooves (10). One end of the guiding block (6) is rotatably connected to a rotating ring (7). A tube-grabbing post (8) for inserting into the yarn tube is fixedly provided on the rotating ring (7). The tube-grabbing post (8) is frustum-shaped to achieve automatic centering when inserting into the yarn tube. A yarn-guiding clamp (9) for combing the yarn is provided at the small diameter end of the tube-grabbing post (8). The yarn can pass through the yarn-guiding clamp (9), the tube-grabbing post (8) and the guiding block (6) in sequence to complete the guiding.

2. The double-seat collective doffing bobbin gripper according to claim 1, characterized in that: The dredging and gripping pipe assembly also includes a support sleeve (4) set on one side of the support plate (3). Several traction rods (5) are hinged to the outside of the support sleeve (4), and the free end of each traction rod (5) is hinged to the corresponding dredging block (6). An electric push rod (11) is provided on the support plate (3). The output end of the electric push rod (11) is connected to the support sleeve (4) to drive the support sleeve (4) to move axially along the support plate (3), and then drive the guide block (6), the rotating ring (7) and the gripping pipe insertion post (8) to move radially along the slide groove (10) through the traction rod (5).

3. The double-seat collective doffing bobbin gripper according to claim 2, characterized in that: The turntable (2) has several gathering holes (18) through it. Each gathering hole (18) is coaxially arranged with the corresponding support plate (3) to gather the yarn conveyed by the yarn tube on the single gripping tube insert (8). A gear (13) is fixedly arranged on the side of the turntable (2) facing the support plate (3).

4. The double-seat collective doffing bobbin gripper according to claim 3, characterized in that: The gear (13) is rotatably connected to the limiting ring (14) on the side away from the turntable (2). The support frame (1) has an installation cavity (12). The turntable (2) is rotatably connected to the installation cavity (12). The limiting ring (14) is fixed to the inner wall of the installation cavity (12). The outer side of the support plate (3) is in sliding frictional cooperation with the inner wall of the limiting ring (14). When the turntable (2) drives the support plate (3) to revolve, the support plate (3) rotates axially along the gathering hole (18).

5. The double-seat collective doffing bobbin gripper according to claim 4, characterized in that: The gear (13) is meshed with a toothed belt (15) on its outer side. A servo motor (16) is provided on one side of the surface of the support frame (1). A pulley is provided at the output end of the servo motor (16). The pulley is connected to the toothed belt (15) for transmission and is used to drive the toothed belt (15), the gear (13) and the turntable (2) to rotate synchronously, so as to realize the work position switching of the support plate (3).

6. The double-seat collective doffing bobbin gripper according to claim 1, characterized in that: The support frame (1) has several combing holes (17) on one side. The combing holes (17) are distributed circumferentially along the axis of the turntable (2) and are used to fix and place spare yarn tubes.

7. The double-seat collective doffing bobbin gripper according to claim 1, characterized in that: An electric slide rail (19) is provided on one side of the support frame (1), and an adjustable column (20) is slidably connected on the electric slide rail (19).

8. The double-seat collective doffing bobbin gripper according to claim 7, characterized in that: The top of the column (20) is fixed with an installation plate (21). A telescopic cylinder (22) is provided on one side of the installation plate (21). A tension rod (23) is hinged to the output end of the telescopic cylinder (22). The middle part of the tension rod (23) is hinged to the installation plate (21). The telescopic cylinder (22) is used to drive the tension rod (23) to deflect so as to tension the yarn conveyed by the yarn tube on the gripping tube insert (8).

9. The double-seat collective doffing bobbin gripper according to claim 8, characterized in that: A clamping cylinder (24) is also provided on one side of the mounting plate (21), and a cutting blade (25) is provided at the output end of the clamping cylinder (24) to drive the cutting blade (25) to move to complete the yarn cutting.

10. The double-seat collective doffing bobbin gripper according to claim 1, characterized in that: The dredging block (6), the rotating ring (7), the pipe gripping post (8) and the cable management clamp (9) are coaxially arranged. The cable management clamp (9) is threadedly connected to the pipe gripping post (8). The outer side of the pipe gripping post (8) is covered with a rubber sleeve for anti-slip buffering.

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