Sewing and thread trimming device of hosiery machine

Abstract

The utility model provides a sewing and thread trimming device of a hosiery machine, and belongs to the technical field of hosiery machines. The chained sewing machine comprises a sewing device, a first curved needle, a second curved needle and a yarn guide needle are arranged on the sewing device, the first curved needle and the second curved needle are arranged in the transverse direction and the longitudinal direction respectively, moving paths of the first curved needle and the second curved needle are orthogonal to each other so as to form a chained sewing thread through the yarn guide needle, and the yarn guide needle is arranged on the outer side of the first curved needle in the transverse direction. The thread trimmer is located on the side opposite to the yarn guide needle and connected with a transverse movement thread trimming driving mechanism which can approach in the transverse direction so as to reach one side of the yarn guide needle to conduct thread trimming. The transverse movement thread trimming driving mechanism transversely moves by a short distance to enable the thread trimmer to complete thread trimming operation, when the thread trimmer conducts trimming once, the path passed by the transverse movement thread trimming driving mechanism is short, the movement amplitude is small, the overall structure is more compact, the risks of position deviation and speed fluctuation of the transverse movement thread trimming driving mechanism can be effectively reduced, and the service life of the thread trimmer is prolonged. And the thread trimming precision of the thread trimmer is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of hosiery knitting machines and relates to a sewing and thread cutting device of a hosiery knitting machine. Background Art

[0002] During the sewing or crocheting process of the machine equipment, the chain stitch is guided and woven by the yarn guide needle, and the chain stitch is led out from the tip of the yarn guide needle to form a continuous sewing effect. A shearing device is provided on the equipment to shear the chain stitch. For example, a Chinese patent discloses a sewing and shearing device for tubular knitted objects [application number: 201910779741.7], which includes a driving mechanism, a power source, a connecting rod group, a rotating shaft, and a swing arm. The connecting rod group is connected to the power source and driven by the power source. The connecting rod group is fixedly combined with the rotating shaft to drive the rotating shaft to pivot. The swing arm is combined with the rotating shaft so that the swing arm pivots with the rotating shaft as the pivot center; a shearing unit is combined with the swing arm and is driven by the swing arm to move along an arc path.

[0003] In the above scheme, the shearing unit can move along an arc path to shear the chain suture, but the path that the shearing unit travels in one cutting is long and the amplitude of the shearing unit movement is large, which requires the equipment to reserve sufficient space in the working area to accommodate this movement, resulting in a non-compact structure and excessive size of the equipment. In addition, the shearing unit may be more prone to position deviation and speed fluctuation during large-scale movement, resulting in a decrease in shearing accuracy, and due to the large amplitude of movement of the shearing unit, the mechanical structure of the shearing unit may be more prone to failure. Utility Model Content

[0004] The purpose of the utility model is to provide a stitching and thread cutting device for a hosiery machine in order to solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sewing and thread cutting device of a hosiery machine includes a sewing device, wherein the sewing device is provided with a first looper, a second looper and a yarn guide needle, the first looper and the second looper are respectively arranged in the transverse and longitudinal directions and their movable paths are orthogonal to each other so as to form a chain stitch through the yarn guide needle, the yarn guide needle is arranged in the transverse direction and is located on the outside of the first looper, a thread cutter arranged in the transverse direction is provided below the first looper, and the thread cutter is located on the side opposite to the yarn guide needle, and the thread cutter is connected to a transverse moving thread cutting drive mechanism that can approach in the transverse direction and reach one side of the yarn guide needle for thread cutting.

[0007] The transverse moving shearing line driving mechanism only needs to move a short distance to make the shearing line cutter complete the shearing line operation. When the shearing line cutter shears once, the transverse moving shearing line driving mechanism passes through a short path and has small movement amplitude, so that the overall structure of the sewing device is more compact, and the transverse moving shearing line driving mechanism only needs to move a small amplitude to drive the shearing line cutter to shear, which can greatly reduce the risk of position deviation and speed fluctuation of the transverse moving shearing line driving mechanism, so as to ensure the shearing precision of the shearing line cutter.

[0008] In the above-mentioned sewing shearing line device, the shearing line cutter comprises a first blade and a second blade arranged transversely, the first blade and the second blade are hinged on a blade holder through a hinge structure, and the hinge axis is arranged longitudinally, and the blade handle end of the first blade, the blade handle end of the second blade and the blade holder are connected with the transverse moving shearing line driving mechanism.

[0009] The transverse moving shearing line driving mechanism only needs to move a small amplitude to drive the first blade and the second blade to rotate around the hinge to shear the chain type sewing thread, which can make the structure more compact and the shearing precision higher.

[0010] In the above-mentioned sewing shearing line device, the first blade and the second blade are arc blades.

[0011] The first blade and the second blade are arc blades, which are convenient for shearing the chain type sewing thread.

[0012] In the above-mentioned sewing shearing line device, the hinge structure comprises two clamping blocks arranged longitudinally on the blade holder, the blade handle of the first blade and the blade handle of the second blade are arranged between the two clamping blocks, and the two clamping blocks are hingedly connected with the blade handle of the first blade and the blade handle of the second blade through a hinge shaft.

[0013] The blade handle of the first blade and the blade handle of the second blade are arranged between the two clamping blocks on the blade holder and are hingedly connected with the two clamping blocks through the hinge shaft.

[0014] In the above-mentioned sewing shearing line device, the transverse moving shearing line driving mechanism comprises a support, the blade holder is fixed on the upper end of the support, a guide hole arranged transversely is formed in the blade holder, a push-pull shaft is arranged in the guide hole, one end of the push-pull shaft is connected with the blade handle end of the first blade and the blade handle end of the second blade through two push-pull pieces respectively, one end of each push-pull piece is hingedly connected with the push-pull shaft, the other end of each push-pull piece is hingedly connected with the blade handle end of the first blade and the blade handle end of the second blade respectively, and the other end of the push-pull shaft is connected with a push-pull driving assembly.

[0015] The push-pull driving assembly can drive the push-pull shaft to move transversely in the guide hole of the blade holder, and when the push-pull shaft moves transversely in the guide hole, the first blade and the second blade can be driven to rotate around the hinge through the transmission of the push-pull pieces to shear the chain type sewing thread.

[0016] In the suture thread cutting device, the push-pull driving assembly comprises a lever arranged on one side of the support, the middle part of the lever is connected with the support through a first hinge structure, the upper end of the lever is provided with a sliding groove, the sliding groove is provided with a sliding block capable of rotating and sliding, the sliding groove is provided with a necking part to prevent the sliding block from being radially out of the sliding groove, the sliding block is connected with the other end of the push-pull shaft, and the lower end of the lever is connected with a pendulum driving unit capable of swinging the two ends of the lever around the first hinge structure.

[0017] When the upper end of the lever swings around the first hinge structure, a transverse force can be applied to the push-pull shaft, so as to drive the push-pull shaft to move transversely in the guide hole and further drive the first blade and the second blade to cut the chain type suture thread. When the push-pull shaft moves transversely in the guide hole, the sliding block on the push-pull shaft slides in the sliding groove at the upper end of the lever, and the necking part on the lever can prevent the sliding block from being radially out of the sliding groove, thereby limiting the position.

[0018] In the suture thread cutting device, the pendulum driving unit comprises a linear actuator, the output shaft of the linear actuator is connected with the lever, and the sliding groove shaft is arranged in the upper end of the lever.

[0019] The output shaft of the linear actuator can be extended and retracted to drive the two ends of the lever to swing around the first hinge structure.

[0020] In the suture thread cutting device, the support and the weaving device are provided with a transposition assembly capable of adjusting the longitudinal position of the thread cutter.

[0021] The transposition assembly can adjust the longitudinal position of the thread cutter, so as to avoid interference between the chain type suture thread and the thread cutter.

[0022] In the suture thread cutting device, the transposition assembly comprises a swing hole arranged transversely on the lower end of the support, one end of a swing rod is arranged in the swing hole, the other end of the swing rod is fixed on the weaving device, and a swing transposition driving unit is arranged between the support deviated from the swing center and the weaving device.

[0023] The swing transposition driving unit can drive the support to swing around the swing rod to adjust the longitudinal position of the thread cutter. When the thread cutting operation is not needed, the thread cutter is in the initial position, at this time, the chain type suture thread is not between the first blade and the second blade to avoid interference. When the thread cutter needs to cut the thread, the swing transposition driving unit drives the support to swing around the swing rod to adjust the longitudinal position of the thread cutter, so that the chain type suture thread is between the first blade and the second blade to facilitate the subsequent thread cutting operation.

[0024] In the suture thread cutting device, the swing transposition driving unit comprises an extension driving device arranged on the weaving device or the support deviated from the center, and a reset elastic member is further arranged between the weaving device and the support.

[0025] The telescopic piston of the telescopic drive can drive the support to swing around the swing rod to adjust the position of the thread cutter in the longitudinal direction, and the reset elastic member can conveniently reset the thread cutter to the initial position.

[0026] Compared with the prior art, the utility model has the advantages that 1, the horizontal moving thread cutting drive mechanism can make the thread cutter complete the thread cutting operation by moving horizontally a short distance, the path of the horizontal moving thread cutting drive mechanism is short and the movement amplitude is small when the thread cutter cuts once, so that the overall structure is more compact. 2, the horizontal moving thread cutting drive mechanism only needs to move a small amplitude to drive the thread cutter to cut the thread, which can effectively reduce the risk of position deviation and speed fluctuation of the horizontal moving thread cutting drive mechanism and ensure the thread cutting precision of the thread cutter. 3, the movement amplitude of the horizontal moving thread cutting drive mechanism is small, which can effectively reduce the risk of failure. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is the overall structure schematic view provided by the utility model;

[0028] Figure 2 is the front view provided by the utility model;

[0029] Figure 3 is the structure schematic view of the horizontal moving thread cutting drive mechanism;

[0030] Figure 4 is the structure schematic view of the transposition assembly;

[0031] Figure 5 is the structure schematic view of the push-pull driving assembly;

[0032] Figure 6 is the structure schematic view of the sliding groove;

[0033] Figure 7 is the structure schematic view of the knife holder;

[0034] Figure 8 is the structure schematic view of the thread cutter;

[0035] In the drawing, the sewing device 1, the first curved needle 2, the second curved needle 3, the guide needle 4, the thread cutter 5, the horizontal moving thread cutting drive mechanism 6, the first blade 7, the second blade 8, the hinge structure 9, the knife holder 10, the clamping block 11, the hinge shaft 12, the support 13, the guide hole 14, the push-pull shaft 15, the push-pull piece 16, the push-pull driving assembly 17, the lever 18, the first hinged structure 19, the sliding groove 20, the sliding block 21, the necked portion 22, the pendulum driving unit 23, the linear drive 24, the hinged seat 25, the first hinged shaft 26, the transposition assembly 27, the swing hole 28, the swing rod 29, the swing transposition driving unit 30, the telescopic drive 31, the reset elastic member 32, the telescopic piston 33, the hinged groove 34, the hinged block 35 and the second hinged shaft 36. DETAILED DESCRIPTION

[0036] Embodiment One

[0037] As shown in Figures 1-8 A sewing and cutting device of a hosiery machine, comprising a sewing device 1, the sewing device 1 is provided with a first needle 2, a second needle 3 and a guide needle 4, the first needle 2 and the second needle 3 are arranged along the transverse direction and the longitudinal direction respectively and the moving paths thereof are perpendicular to each other to form a chain stitch through the guide needle 4, the guide needle 4 is arranged along the transverse direction outside the first needle 2, a cutting device 5 is arranged along the transverse direction below the first needle 2 and the cutting device 5 is arranged on one side opposite to the guide needle 4, and the cutting device 5 is connected with a transverse cutting drive mechanism 6 capable of approaching the side of the guide needle 4 along the transverse direction to cut the chain stitch.

[0038] In the utility model, the moving paths of the first needle 2 and the second needle 3 are perpendicular to each other to form a chain stitch through the guide needle 4, and the chain stitch is drawn from the tip of the guide needle.

[0039] The transverse cutting drive mechanism 6 can make the cutting device 5 cut the chain stitch by approaching the side of the guide needle 4 along the transverse direction, the transverse cutting drive mechanism 6 only needs to move a short distance along the transverse direction to make the cutting device 5 complete the cutting operation, when the cutting device 5 cuts once, the path passed by the transverse cutting drive mechanism 6 is short and the movement amplitude is small, so that the overall structure of the sewing device 1 is more compact, and the transverse cutting drive mechanism 6 only needs to move a small amplitude to drive the cutting device 5 to cut, which can greatly reduce the risk of position deviation and speed fluctuation of the transverse cutting drive mechanism 6, so as to ensure the cutting precision of the cutting device 5.

[0040] Specifically, as shown in Figures 1-8 The cutting device 5 comprises a first blade 7 and a second blade 8 arranged along the transverse direction, the first blade 7 and the second blade 8 are hinged on a blade holder 10 through a hinge structure 9, and the central axis of the hinge structure 9 is arranged along the longitudinal direction, and the handle end of the first blade 7, the handle end of the second blade 8 and the blade holder 10 are connected with the transverse cutting drive mechanism 6.

[0041] The transverse movement of the transverse cutting drive mechanism 6 can drive the first blade 7 and the second blade 8 to rotate around the hinge structure 9 to cut the chain stitch, and the transverse cutting drive mechanism 6 only needs to move a small amplitude to drive the first blade 7 and the second blade 8 to complete the cutting operation, so that the structure is more compact and the cutting precision is higher.

[0042] Specifically, as shown in Figures 1-8 The first blade 7 and the second blade 8 are arc blades.

[0043] The first blade 7 and the second blade 8 are arc-shaped blades, which facilitate the shearing of the chain suture and ensure that the chain suture is between the first blade 7 and the second blade 8, so as to ensure the effective shearing and shearing accuracy of the chain suture.

[0044] Specifically, combined Figures 5-8 As shown, the hinge structure 9 includes two clamping blocks 11 longitudinally distributed on the tool holder 10, and the handle of the first blade 7 and the handle of the second blade 8 are provided between the two clamping blocks 11. The two clamping blocks 11 are hingedly connected to the handle of the first blade 7 and the handle of the second blade 8 through a hinge shaft 12.

[0045] The handle of the first blade 7 and the handle of the second blade 8 are arranged between the two clamping blocks 11 on the tool holder 10 and are hingedly connected to the two clamping blocks 11 through a hinge shaft 12. The transverse thread cutting drive mechanism 6 can drive the first blade 7 and the second blade 8 to rotate around the hinge by a small movement in the transverse direction to cut the chain stitches.

[0046] Specifically, combined Figures 3-8 As shown, the transverse thread cutting drive mechanism 6 includes a bracket 13, and the tool holder 10 is fixed at the upper end of the bracket 13. A transversely arranged guide hole 14 is opened on the tool holder 10, and a push-pull shaft 15 is passed through the guide hole 14. One end of the push-pull shaft 15 is connected to the handle end of the first blade 7 and the handle end of the second blade 8 through two push-pull pieces 16 respectively. One end of the two push-pull pieces 16 is hinged to the push-pull shaft 15, and the other end of the two push-pull pieces 16 is hinged to the handle end of the first blade 7 and the handle end of the second blade 8 respectively. The other end of the push-pull shaft 15 is connected to the push-pull drive assembly 17.

[0047] The push-pull drive assembly 17 can drive the push-pull shaft 15 to shift laterally in the guide hole 14 on the tool holder 10. The guide hole 14 cooperates with the push-pull shaft 15 to play a guiding role. One end of the two push-pull pieces 16 is hinged to the push-pull shaft 15, and the other end is hinged to the handle end of the respective first blade 7 and the handle end of the second blade 8 to realize transmission. When the push-pull shaft 15 shifts laterally in the guide hole 14, the transmission of the push-pull piece 16 can drive the first blade 7 and the second blade 8 to rotate around the hinge to cut the chain suture.

[0048] Specifically, combined Figures 3-6 As shown, the push-pull drive assembly 17 includes a lever 18 arranged on one side of the bracket 13. The middle part of the lever 18 is connected to the bracket 13 through a first hinge structure 19. The upper end of the lever 18 is provided with a slide groove 20. The slide groove 20 is provided with a rotatable and sliding slider 21. The slide groove 20 prevents the slider 21 from radially escaping through a constricted portion 22. The slider 21 is connected to the other end of the push-pull shaft 15. The lower end of the lever 18 is connected to a pendulum drive unit 23 that can make the two ends of the lever 18 swing around the first hinge structure 19.

[0049] In this embodiment, the slider 21 is spherical, the cross-sections of the slider 21 and the slide groove 20 are circular, the cross-section of the necking portion 22 is rectangular, the shape of the end where the push-pull shaft 15 is connected to the slider 21 is adapted to the necking portion 22, and the cross-section of the end where the push-pull shaft 15 is connected to the slider 21 is rectangular.

[0050] The pendulum drive unit 23 can drive both ends of the lever 18 to swing around the first hinge structure 19. When the upper end of the lever 18 swings around the first hinge structure 19, it can apply a lateral force to the push-pull shaft 15, thereby driving the push-pull shaft 15 to shift laterally in the guide hole 14 and then drive the first blade 7 and the second blade 8 to shear the chain suture. When the push-pull shaft 15 shifts laterally in the guide hole 14, the slider 21 on the push-pull shaft 15 slides in the slide groove 20 at the upper end of the lever 18. The necked portion 22 on the lever 18 can prevent the slider 21 from radially disengaging, thereby playing a limiting role.

[0051] Specifically, combined Figures 1-6 As shown, the pendulum drive unit 23 includes a linear drive 24 , the output shaft of the linear drive 24 is hinged to the lever 18 , and the slide slot 20 axially passes through the upper end of the lever 18 .

[0052] The output shaft of the linear drive 24 is retracted to drive the two ends of the lever 18 to swing around the first hinge structure 19. The first hinge structure 19 includes a hinge groove 34 arranged in the middle of the lever 18. The bracket 13 is provided with a hinge block 35 adapted to the hinge groove 34. The hinge block 35 is hinged in the hinge groove 34 through a second hinge shaft 36. The linear drive 24 is arranged at the lower end of the bracket 13. The output shaft of the linear drive 24 is provided with a hinge seat 25. The lower end of the lever 18 is hinged to the hinge seat 25 through the first hinge shaft 26. The overall structure is more compact and can effectively save space.

[0053] Specifically, combined Figure 1 、 Figure 2 and Figure 4 As shown, a shifting assembly 27 capable of changing the longitudinal position of the thread cutter 5 is provided between the bracket 13 and the sewing device 1. The shifting assembly 27 includes a swing hole 28 arranged transversely on the lower end of the bracket 13. One end of a swing rod 29 is provided in the swing hole 28, and the other end of the swing rod 29 is fixed on the sewing device 1. A swing shifting drive unit 30 is provided between the bracket 13 deviating from the swing center and the sewing device 1. The swing shifting drive unit 30 includes a telescopic drive 31 arranged off-center on the sewing device 1 or the bracket 13. A reset elastic member 32 is also provided between the sewing device 1 and the bracket 13.

[0054] The telescopic piston 33 of the telescopic driver 31 can drive the bracket 13 to swing around the swing rod 29 to change the position of the thread cutter 5 in the longitudinal direction, when the thread cutter 5 is in the initial position and the chain thread is not between the first blade 7 and the second blade 8 to avoid interference, when the thread cutter 5 needs to cut the thread, the telescopic piston 33 drives the bracket 13 to swing around the swing rod 29 to change the position of the thread cutter 5 in the longitudinal direction, so that the chain thread is between the first blade 7 and the second blade 8 for subsequent thread cutting operation, and the reset elastic member 32 can conveniently reset the thread cutter 5 to the initial position.

[0055] The working principle of the utility model is: the chain thread is drawn out from the tip of the guide needle, when the thread cutter 5 does not cut the thread, the thread cutter 5 is in the initial position, when the thread cutter 5 needs to cut the thread, the telescopic piston 33 of the telescopic driver 31 is extended to drive the bracket 13 to swing around the swing rod 29 to change the position of the thread cutter 5 in the longitudinal direction so that the chain thread is between the first blade 7 and the second blade 8.

[0056] The output shaft of the linear driver 24 drives the two ends of the telescopic lever 18 to swing around the second hinge shaft 36, when the upper end of the lever 18 swings around the second hinge shaft 36, the transverse force is applied to the push-pull shaft 15, thereby driving the push-pull shaft 15 to move transversely in the guide hole 14, and then the transmission of the push-pull piece 16 drives the first blade 7 and the second blade 8 to rotate around the hinge shaft 12 to cut the chain thread, after the thread is cut, the linear driver 24 drives the lever 18 to reset, the lever 18 drives the push-pull shaft 15, the first blade 7 and the second blade 8 to reset, and the telescopic piston 33 of the telescopic driver 31 is retracted to make the thread cutter 5 return to the initial position.

[0057] Embodiment two

[0058] The structure and working principle of the embodiment are basically same with embodiment one, the difference is that the other end of the push-pull shaft 15 is provided with a ball head, the upper end of the lever 18 is provided with a connecting groove matched with the ball head, and the ball head can rotate and slide in the connecting groove.

[0059] The specific embodiments described in the present application are only illustrative of the spirit of the utility model. Those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the range defined by the attached claims.

[0060] Although the sewing device 1, the first curved needle 2, the second curved needle 3, the guide needle 4, the thread cutter 5, the horizontal moving thread cutting driving mechanism 6, the first blade 7, the second blade 8, the hinge structure 9, the blade holder 10, the clamping block 11, the hinge shaft 12, the support 13, the guide hole 14, the push-pull shaft 15, the push-pull piece 16, the push-pull driving assembly 17, the lever 18, the first hinge structure 19, the sliding groove 20, the sliding block 21, the necked portion 22, the pendulum driving unit 23, the linear driver 24, the hinge seat 25, the first hinge shaft 26, the transposition assembly 27, the swing hole 28, the swing rod 29, the swing transposition driving unit 30, the telescopic driver 31, the reset elastic member 32, the telescopic piston 33, the hinge groove 34, the hinge block 35, the second hinge shaft 36 and the like are used more frequently in the description, the use of these terms is only for the convenience of describing and explaining the essence of the utility model; it is against the spirit of the utility model to interpret them as any kind of additional limitation.

Claims

1. A stitching and thread cutting device for a hosiery machine, comprising a stitching device (1), wherein the stitching device (1) is provided with a first looper (2), a second looper (3) and a yarn guide needle (4), wherein the first looper (2) and the second looper (3) are respectively arranged in a transverse direction and a longitudinal direction and their movable paths are orthogonal to each other so as to form a chain stitch through the yarn guide needle (4), wherein the yarn guide needle (4) is arranged in a transverse direction and is located outside the first looper (2), and is characterized in that: A thread cutter (5) is provided below the first looper (2) and is located on a side opposite to the yarn guide needle (4). The thread cutter (5) is connected to a transverse thread cutting drive mechanism (6) capable of approaching the yarn guide needle (4) in the transverse direction to cut the thread.

2. The stitching and thread cutting device of the hosiery machine according to claim 1, characterized in that: The thread cutter (5) comprises a first blade (7) and a second blade (8) arranged in a transverse direction. The first blade (7) and the second blade (8) are hinged to a blade holder (10) via a hinge structure (9), and the central axis of the hinge is arranged longitudinally. The handle end of the first blade (7), the handle end of the second blade (8) and the blade holder (10) are connected to the transverse thread cutting drive mechanism (6).

3. The stitching and thread cutting device of the hosiery machine according to claim 2, characterized in that: The first blade (7) and the second blade (8) are arc-shaped blades.

4. The stitching and thread cutting device of the hosiery machine according to claim 2, characterized in that: The hinge structure (9) comprises two clamping blocks (11) arranged longitudinally on the tool holder (10), a handle of the first blade (7) and a handle of the second blade (8) are provided between the two clamping blocks (11), and the two clamping blocks (11) are hingedly connected to the handle of the first blade (7) and the handle of the second blade (8) via a hinge shaft (12).

5. The stitching and thread cutting device of the hosiery machine according to claim 2, characterized in that: The transverse shearing drive mechanism (6) includes a bracket (13), the tool holder (10) is fixed at the upper end of the bracket (13), a transversely arranged guide hole (14) is opened on the tool holder (10), a push-pull shaft (15) is passed through the guide hole (14), one end of the push-pull shaft (15) is connected to the handle end of the first blade (7) and the handle end of the second blade (8) through two push-pull pieces (16), one end of the two push-pull pieces (16) is hinged to the push-pull shaft (15), the other end of the two push-pull pieces (16) is hinged to the handle end of the first blade (7) and the handle end of the second blade (8), and the other end of the push-pull shaft (15) is connected to the push-pull drive assembly (17).

6. The stitching and thread cutting device of the hosiery machine according to claim 5, characterized in that: The push-pull drive assembly (17) includes a lever (18) arranged on one side of the bracket (13), the middle part of the lever (18) is connected to the bracket (13) through a first hinge structure (19), the upper end of the lever (18) is provided with a slide groove (20), the slide groove (20) is provided with a rotatable and sliding slider (21), the slide groove (20) prevents the slider (21) from radially escaping through a constricted portion (22), the slider (21) is connected to the other end of the push-pull shaft (15), and the lower end of the lever (18) is connected to a pendulum drive unit (23) that can make the two ends of the lever (18) swing around the first hinge structure (19).

7. The stitching and thread cutting device of the hosiery machine according to claim 6, characterized in that: The pendulum drive unit (23) includes a linear drive (24), an output shaft of the linear drive (24) is hinged to the lever (18), and the slide groove (20) is axially arranged through the upper end of the lever (18).

8. The stitching and thread cutting device of a hosiery machine according to claim 5, 6 or 7, characterized in that: A position-changing component (27) capable of changing the longitudinal position of the thread cutter (5) is provided between the bracket (13) and the sewing device (1).

9. The stitching and thread cutting device of the hosiery machine according to claim 8, characterized in that: The shifting assembly (27) includes a swing hole (28) arranged transversely on the lower end of the bracket (13), one end of a swing rod (29) is arranged in the swing hole (28), and the other end of the swing rod (29) is fixed to the sewing device (1). A swing shifting drive unit (30) is provided between the bracket (13) and the sewing device (1) at a position deviated from the swing center.

10. The stitching and thread cutting device of the hosiery machine according to claim 9, characterized in that: The swing transposition drive unit (30) comprises a telescopic drive (31) arranged at a position off-center of the sewing device (1) or the bracket (13), and a reset elastic member (32) is further provided between the sewing device (1) and the bracket (13).

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