Scissor device of flat knitting machine

Abstract

The shear device comprises a left wall plate seat and a right wall plate, a shear rotating shaft is arranged between the left wall plate and the right wall plate, a shear seat is installed on the shear rotating shaft, and a movable shear and a fixed shear which can do relative opening and closing movement are arranged on the shear seat. A bush-hook mechanism capable of moving up and down is arranged on one side of the scissor seat, a thread clamping mechanism is arranged at the top of the scissor seat, and a thread clamping driving mechanism for controlling the thread clamping mechanism to swing is arranged on one side of the scissor seat. According to the utility model, the thread clamping mechanism is arranged on the scissor seat, and the swing of the clamping pieces in the scissors is controlled through the thread clamping gear and the deflection gear, so that the control of different thread clamping positions is realized, two weaving threads can be clamped at the same time, and the two weaving threads can also be released respectively. According to the utility model, the clamping control of different weaving threads can be met without additionally arranging a scissors device, the types of parts are reduced, the structure is compact, no extra space is occupied, the thread trimming control is accurate, and the operation is stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of knitting machinery, and more specifically to a scissors device of a flat knitting machine. Background Art

[0002] A horizontal knitting machine is a device used to produce knitted products. During the knitting process, a scissor device is required to cut and clamp the yarn when changing the knitting position and yarn. Existing knitted products (such as gloves) have evolved from traditional single-line knitting to multi-line knitting in order to give them more functions or make their styles more beautiful and diverse. However, the scissor device hooks and clamps the yarn through a hooking mechanism when cutting the thread, and can only clamp one yarn. When there are multiple knitting yarns, the number of scissor devices needs to be increased. The structure is relatively complex, occupies a large space, is not convenient to adjust and install, and the cutting accuracy is not high. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a scissors device for a flat knitting machine, which can control the clamping and cutting actions of multiple yarns at the same time, and has a reliable structure and precise operation.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a scissors device of a horizontal knitting machine, comprising a left wall panel seat and a right wall panel, a scissors rotating shaft is arranged between the left wall panel and the right wall panel, a scissors seat is installed on the scissors rotating shaft, and the scissors seat is provided with movable scissors and fixed scissors that can move relative to each other, a hook knife mechanism that can move up and down is arranged on one side of the scissors seat, a wire clamping mechanism is arranged on the top of the scissors seat, and a wire clamping drive mechanism that controls the swing of the wire clamping mechanism is arranged on one side of the scissors seat.

[0005] Furthermore, the thread clamping mechanism comprises an upper scissors clamping piece and a lower scissors clamping piece fixed on the scissors seat, a middle scissors clamping piece is arranged between the upper scissors clamping piece and the lower scissors clamping piece, and the middle scissors clamping piece is connected to the thread clamping driving mechanism. The thread clamping driving mechanism drives the middle scissors clamping piece to swing, and then controls the angle position of the middle scissors clamping piece relative to the angle between the upper clamping piece and the lower clamping piece, so as to realize the clamping position of different yarns.

[0006] Furthermore, the clamping drive mechanism includes an eccentric gear connected to the clip in the scissors, a clamping motor is installed on the scissors seat, a driving shaft of the clamping motor is connected to the clamping gear, and the clamping gear meshes with the eccentric gear. The clamping motor is fixed to one side of the bottom of the scissors seat, and the operation of the clamping motor drives the clamping gear connected thereto to rotate, thereby driving the eccentric gear meshed therewith to rotate, thereby driving the oscillation of the clip in the scissors connected thereto.

[0007] Furthermore, the scissor seat is provided with a yaw gear seat and a clamping motor seat, which are used for installing the yaw gear and the clamping motor respectively, the yaw gear is provided with a yaw shaft, and the yaw gear seat is provided with a yaw slot for the yaw shaft of the yaw gear to pass through. The yaw shaft of the yaw gear is rotatably connected with the yaw gear seat and the scissor seat through the yaw gear circle, and the yaw shaft passes through the yaw slot and limits its swing stroke through the yaw slot.

[0008] Furthermore, a sensing device that cooperates with the wire clamping gear is installed on the wire clamping motor seat. The sensing device includes a sensor seat installed on the wire clamping motor seat, a sensor is installed on the sensor seat, and the wire clamping gear is connected to a sensing sleeve that is adapted to the sensor. The rotation position of the wire clamping gear can be detected by the sensing device, thereby detecting and controlling the state of the wire clamping mechanism.

[0009] Furthermore, a movable scissor shaft rotatably connected to the movable scissors is installed in the scissor seat, a scissor swing block is connected to the bottom of the scissor shaft, and a scissor cam is arranged on the scissor shaft to cooperate with the scissor swing block. Under the rotation of the scissor shaft, the scissor cam swings and drives the scissor swing block to rotate, realizing the rotation of the movable scissor shaft, thereby realizing the opening and closing action of the movable scissors and the fixed scissors.

[0010] Furthermore, the hook knife mechanism includes a hook knife and a hook knife pressure plate installed on one side of the scissor seat, the hook knife is provided with a hook knife swing block, and the scissor cam is provided with a groove that cooperates with the hook knife swing block. The hook knife is installed on one side of the scissor seat and can move up and down along the scissor seat. When the scissor cam follows the swing of the scissor shaft, the groove cooperates with the hook knife swing block to realize the up and down movement of the hook knife, so that the hook knife cooperates with the hook knife pressure plate to complete the hooking and pressing of the yarn.

[0011] Furthermore, one side of the scissor cam is connected to a swing rod, and the groove is provided on one side of the swing rod. The groove is provided on one side of the swing rod, and the outer end of the groove is open. When the scissor cam rotates and swings upward, the groove cooperates with the hook knife swing block to realize the upward movement of the hook knife.

[0012] Furthermore, a fixed shaft parallel to the scissor shaft is provided between the left wall plate and the right wall plate, and a slot matched with the fixed shaft is provided on the scissor seat. One side of the scissor seat is locked with the fixed shaft through the slot, so as to avoid unnecessary shaking of the scissor seat caused by the rotation of the scissor shaft during operation, thereby increasing the overall stability of the scissor seat.

[0013] Furthermore, a shaft driving mechanism is provided at one end of the scissors shaft, and the shaft driving mechanism includes a shaft gear connected to one end of the scissors shaft, a shaft motor is installed on the left wall panel or the right wall panel, a driving shaft of the shaft motor is connected to a driving gear, a coaxial transition gear and a transmission gear are installed on the left wall panel or the right wall panel, and the transition gear and the transmission gear are respectively meshed with the driving gear and the shaft gear. The shaft motor rotates to drive the driving gear connected thereto, thereby driving the transition gear to rotate, causing the coaxial transmission gear to rotate, driving the shaft gear meshed with the transmission gear to rotate, and then realizing the rotation of the scissors shaft connected to the transmission gear. The shaft gear is fan-shaped, and the size of the fan can meet the swinging requirement of the scissors shaft. The motor and gear set structure are used to realize the drive of the scissors shaft, and the transmission is stable, and the operation is smooth and reliable.

[0014] The utility model sets a clamping mechanism on the scissor seat, controls the swing of the clamping piece in the scissors through the clamping gear and the yaw gear, realizes the control of different clamping positions, can complete the clamping of two weaving threads at the same time, and can also release the two weaving threads separately. The utility model can meet the clamping control of different weaving threads without adding a scissor device, reduces the types of parts, has a compact structure, does not occupy extra space, has precise wire cutting control, and operates smoothly and reliably. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an exploded view of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure installation of the utility model;

[0017] Figure 3 It is a schematic diagram of different wire clamping states in the utility model;

[0018] Figure 4 It is a schematic diagram of the scissors shaft driving mechanism in the utility model.

[0019] Marking instructions: 1. Shaft motor; 2. Clamp motor seat; 3. Oscillating gear; 4. Oscillating shaft; 5. Oscillating gear shaft; 6. Clamp gear; 7. Oscillating gear seat; 8. Induction sleeve; 9. Scissor seat; 10. Slot; 11. Upper clip of scissors; 12. Middle clip of scissors; 13. Lower clip of scissors; 14. Fixed scissors; 15. Movable scissors; 16. Movable scissors shaft; 17. Scissors swing block; 18. Scissors cam; 19. Swing rod; 20. Groove; 21. Hook knife swing block; 22. Hook knife; 23. Hook knife pressure plate; 24. Scissors shaft; 25. Left wall panel; 26. Right wall panel; 27. Fixed shaft; 28. Shaft motor; 29. ​​Sensor seat; 30. Sensor; 31. Driving gear; 32. Transition gear; 33. Transmission gear; 34. Shaft gear. DETAILED DESCRIPTION

[0020] Reference Figures 1 to 4 The specific implementation of the scissors device of a flat knitting machine of the utility model is further described.

[0021] A scissors device of a horizontal knitting machine includes a left wall panel 25 and a right wall panel 26, a scissors shaft 24 is arranged between the left wall panel 25 and the right wall panel 26, a scissors seat 9 is installed on the scissors shaft 24, a movable scissors 15 and a fixed scissors 14 that can relatively open and close are arranged on the scissors seat 9, a hook knife 22 mechanism that can move up and down is arranged on one side of the scissors seat 9, a wire clamping mechanism is arranged on the top of the scissors seat 9, and a wire clamping drive mechanism that controls the swing of the wire clamping mechanism is arranged on one side of the scissors seat 9.

[0022] In this embodiment, the thread clamping mechanism includes an upper scissors clamping piece 11 and a lower scissors clamping piece 13 fixed on the scissors seat 9, and a middle scissors clamping piece 12 is arranged between the upper scissors clamping piece 11 and the lower scissors clamping piece 13, and the middle scissors clamping piece 12 is connected to the thread clamping driving mechanism. The thread clamping driving mechanism drives the middle scissors clamping piece 12 to swing, and then controls the angle position of the middle scissors clamping piece 12 relative to the angle between the upper clamping piece and the lower scissors clamping piece 13, so as to realize the clamping position of different yarns.

[0023] In this embodiment, the clamping drive mechanism includes an eccentric gear 3 connected to the clip 12 in the scissors, a clamping motor is installed on the scissors seat 9, and the driving shaft of the clamping motor is connected to the clamping gear 6, and the clamping gear 6 is meshed with the eccentric gear 3. The clamping motor is fixed to one side of the bottom of the scissors seat 9, and the operation of the clamping motor drives the clamping gear 6 connected thereto to rotate, thereby driving the eccentric gear 3 meshed therewith to rotate, thereby driving the oscillation gear 3 connected thereto to swing.

[0024] In this embodiment, the scissor seat 9 is preferably provided with a yaw gear 3 seat and a clamping motor seat 2, which are used for installing the yaw gear 3 and the clamping motor respectively, and the yaw gear 3 is provided with a swing shaft 4, and the yaw gear 3 seat is provided with a swing slot for the swing shaft 4 of the yaw gear 3 to pass through. The swing shaft 4 of the yaw gear 3 is rotatably connected with the yaw gear 3 seat and the scissor seat 9 through the yaw gear 3, and the swing shaft 4 passes through the swing slot and limits its swing stroke through the swing slot.

[0025] In this embodiment, the clamping motor seat 2 is preferably provided with a sensing device that cooperates with the clamping gear 6. The sensing device includes a sensor seat 29 mounted on the clamping motor seat 2, a sensor 30 is mounted on the sensor seat 29, and the clamping gear 6 is connected with a sensing sleeve 8 that is adapted to the sensor 30. The rotation position of the clamping gear 6 can be detected by the sensing device, thereby detecting and controlling the state of the clamping mechanism.

[0026] In this embodiment, preferably, a movable scissor shaft 16 rotatably connected to the movable scissors 15 is installed in the scissor seat 9, a scissor swing block 17 is connected to the bottom of the scissor rotating shaft 24, and a scissor cam 18 is provided on the scissor rotating shaft 24 to cooperate with the scissor swing block 17. Under the rotation of the scissor rotating shaft 24, the scissor cam 18 follows the swing, pushes the scissor swing block 17 to rotate, realizes the rotation of the movable scissor shaft 16, and thus realizes the opening and closing action of the movable scissors 15 and the fixed scissors 14.

[0027] In this embodiment, the hook knife 22 mechanism includes a hook knife 22 and a hook knife pressure plate 23 installed on one side of the scissor seat 9, the hook knife 22 is provided with a hook knife swing block 21, and the scissor cam 18 is provided with a groove 20 that cooperates with the hook knife swing block 21. The hook knife 22 is installed on one side of the scissor seat 9 and can move up and down along the scissor seat 9. In the process of the scissor cam 18 following the swing of the scissor shaft 24, the groove 20 cooperates with the hook knife swing block 21 to realize the up and down movement of the hook knife 22, so that the hook knife 22 cooperates with the hook knife pressure plate 23 to complete the hooking and pressing of the yarn.

[0028] In this embodiment, preferably, one side of the scissor cam 18 is connected to a swing rod 19, and the groove 20 is provided on one side of the swing rod 19. The groove 20 is provided on one side of the swing rod 19, and the outer end of the groove 20 is open. When the scissor cam 18 rotates and swings upward, the groove 20 cooperates with the hook knife swing block 21 to realize the upward movement of the hook knife.

[0029] In this embodiment, preferably, a fixed shaft 27 parallel to the scissor shaft 24 is provided between the left wall panel 25 and the right wall panel 26, and a clamping slot 10 matched with the fixed shaft 27 is provided on the scissor seat 9. One side of the scissor seat 9 is clamped with the fixed shaft 27 through the clamping slot 10, so as to avoid unnecessary shaking of the scissor seat 9 caused by the rotation of the scissor shaft 24 during operation, thereby increasing the overall stability of the scissor seat 9.

[0030] In this embodiment, preferably, a shaft driving mechanism is provided at one end of the scissors shaft 24, and the shaft driving mechanism includes a shaft gear 34 connected to one end of the scissors shaft 24, a shaft motor 28 is installed on the left wall panel 25 or the right wall panel 26, and the driving shaft of the shaft motor 28 is connected to the driving gear 31, and a coaxial transition gear 32 and a transmission gear 33 are installed on the left wall panel 25 or the right wall panel 26, and the transition gear 32 and the transmission gear 33 are respectively meshed with the driving gear 31 and the shaft gear 34. The shaft motor 28 rotates to drive the driving gear 31 connected thereto to rotate, thereby driving the transition gear 32 to rotate, so as to rotate the coaxial transmission gear 33, and drive the shaft gear 34 meshed with the transmission gear 33 to rotate, thereby realizing the rotation of the scissors shaft 24 connected to the transmission gear 33. The shaft gear 34 is fan-shaped, and the size of the fan shape can meet the swinging requirements of the scissors shaft 24. The motor and gear set structure are used to drive the scissors rotating shaft 24, and the transmission is stable and the operation is smooth and reliable.

[0031] The specific working process of this utility model is as follows:

[0032] 1. The shaft motor 28 works, and drives the scissor shaft 24 to rotate through the gear set (driving gear 31, transition gear 32 and transmission gear 33). The scissor shaft 24 drives the scissor cam 18 to rotate, and the swing rod 19 fixed to the scissor cam 18 rotates together, and the hook knife 22 moves upward to hook the first weaving thread under the action of the groove 20 and the hook knife swing block 21, and at the same time drives the scissor swing block 17 to rotate and drives the movable scissor shaft 16 to rotate, so that the movable scissors 15 are unfolded;

[0033] 2. The clamping motor rotates forward, and the clamping gear 6 drives the yaw gear 3 to swing to the right, so that the middle piece of the scissors is in position A (such as Figure 3 shown);

[0034] 3. The shaft motor 28 rotates in reverse, and the hook knife 22 moves downward to pull the first weaving thread downward so that the first weaving thread is located in the opened scissors mouth;

[0035] 4. The clamping motor reverses, and the clamping gear 6 drives the yaw gear 3 to swing to the right, so that the middle piece of the scissors is in position B (such as Figure 3 As shown), while clamping the first weaving thread hooked by the hook knife 22;

[0036] 5. The shaft motor 28 continues to reverse, and the scissor cam 18 rotates to close the movable scissors 15, cutting the first weaving thread, thus completing the clamping of the first weaving thread;

[0037] 6. The shaft motor 28 works, and drives the scissor shaft 24 to rotate through the scissor gear set (driving gear 31, transition gear 32 and transmission gear 33). The scissor shaft 24 drives the scissor cam 18 to rotate, so that the hook knife 22 moves upward to hook the second weaving thread, and at the same time drives the scissor swing block 17 to rotate and drives the movable scissor shaft 16 to rotate, so that the movable scissors 15 are unfolded;

[0038] 7. The clamping motor reverses, and the clamping gear 6 drives the yaw gear 3 to swing leftward, so that the middle piece of the scissors is in position C (such as Figure 3 shown);

[0039] 8. The shaft motor 28 rotates in the reverse direction, and the hook knife 22 moves downward to pull the second weaving thread downward so that the second weaving thread is located in the opened scissors mouth;

[0040] 9. The thread clamping motor rotates forward, and the thread clamping gear 6 drives the yaw gear 3 to swing leftward, so that the middle piece of the scissors is located at position B, and at the same time clamps the second weaving thread hooked by the hook knife 22;

[0041] 10. The shaft motor 28 continues to reverse, and the scissor cam 18 rotates to close the movable scissors 15, cutting the second weaving thread, thereby completing the clamping of the second weaving thread;

[0042] 11. The thread clamping motor rotates forward, and the thread clamping gear 6 drives the yaw gear 3 to swing leftward, so that the middle piece of the scissors is located at position A, and the second weaving thread is released;

[0043] 12. The thread clamping motor reverses, and the thread clamping gear 6 drives the yaw gear 3 to swing to the right, so that the middle piece of the scissors is in position C, and the first weaving thread is released.

[0044] The utility model controls the thread clamping position (A, B, C position) through the thread clamping gear and the yaw gear, and can clamp two weaving threads at the same time, and can also release the two weaving threads separately.

[0045] The above is only the preferred implementation of the utility model described in 4. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A scissors device for a flat knitting machine, characterized in that: It includes a left wall panel seat and a right wall panel, a scissors rotating shaft is arranged between the left wall panel and the right wall panel, a scissors seat is installed on the scissors rotating shaft, movable scissors and fixed scissors that can open and close relatively are arranged on the scissors seat, a hook knife mechanism that can move up and down is arranged on one side of the scissors seat, a wire clamping mechanism is arranged on the top of the scissors seat, and a wire clamping drive mechanism that controls the swing of the wire clamping mechanism is arranged on one side of the scissors seat.

2. The scissors device of a flat knitting machine according to claim 1, characterized in that: The wire clamping mechanism comprises an upper scissors clamping piece and a lower scissors clamping piece fixed on the scissors seat, a middle scissors clamping piece is arranged between the upper scissors clamping piece and the lower scissors clamping piece, and the middle scissors clamping piece is connected to the wire clamping driving mechanism.

3. The scissors device of a flat knitting machine according to claim 2, characterized in that: The wire clamping drive mechanism comprises an eccentric gear connected to the clamping piece in the scissors, a wire clamping motor is installed on the scissors seat, a driving shaft of the wire clamping motor is connected to the wire clamping gear, and the wire clamping gear is meshed with the eccentric gear.

4. The scissors device of a flat knitting machine according to claim 3, characterized in that: The scissor seat is provided with a yaw gear seat and a clamping motor seat, which are respectively used for installing the yaw gear and the clamping motor. The yaw gear is provided with a swing shaft, and the yaw gear seat is provided with a swing groove for the swing shaft of the yaw gear to pass through.

5. The scissors device of a flat knitting machine according to claim 4, characterized in that: The wire clamping motor seat is provided with an induction device matched with the wire clamping gear.

6. The scissors device of a flat knitting machine according to claim 1, characterized in that: A movable scissor shaft rotatably connected to the movable scissors is installed in the scissor seat, a scissor swing block is connected to the bottom of the scissor shaft, and a scissor cam cooperating and abutting against the scissor swing block is arranged on the scissor shaft.

7. The scissors device of a flat knitting machine according to claim 6, characterized in that: The hook knife mechanism comprises a hook knife and a hook knife pressure plate installed on one side of the scissors seat, the hook knife is provided with a hook knife swing block, and the scissors cam is provided with a groove matched with the hook knife swing block.

8. The scissors device of a flat knitting machine according to claim 7, characterized in that: One side of the scissor cam is connected with a swing rod, and the groove is arranged on one side of the swing rod.

9. The scissors device of a flat knitting machine according to claim 1, characterized in that: A fixed shaft parallel to the scissor rotating shaft is arranged between the left wall plate and the right wall plate, and a slot matched with the fixed shaft is opened on the scissor seat.

10. The scissors device of a flat knitting machine according to claim 1, characterized in that: A shaft driving mechanism is provided at one end of the scissors shaft, and the shaft driving mechanism includes a shaft gear connected to one end of the scissors shaft. A shaft motor is installed on the left wall panel or the right wall panel, and the driving shaft of the shaft motor is connected to the driving gear. A coaxial transition gear and a transmission gear are installed on the left wall panel or the right wall panel, and the transition gear and the transmission gear are respectively meshed with the driving gear and the shaft gear.

Images