Scissors device for hosiery knitter

Abstract

A scissor device for a hosiery knitter comprises a hosiery sewing device and a scissor mechanism assembly installed on the sewing device, the scissor mechanism assembly comprises a first scissor blade and a second scissor blade, the first scissor blade is installed on a first linear rail and is driven by a first driving device to linearly move front and back along the first linear rail, and the second scissor blade is driven by a second driving device to linearly move back and forth along the second linear rail. The second shear blade is mounted on the second linear track and is driven by the second driving device to linearly move back and forth along the second linear track, the first shear blade and the second shear blade intersect with each other in the back-and-forth linear movement process, and sock sewing threads are cut at the intersection. The first shear blade and the second shear blade linearly move front and back to crossly shear a sock suture line, shear force in different directions is generated, and the technical problem that in the shearing process of traditional rotary shears, the rotary shear force pulls down the suture line from a line guide piece is solved.

Description

Technical Field

[0001] The invention relates to the technical field of sock knitting machinery, in particular to a scissor device for a sock knitting machine. Background Art

[0002] In the existing disclosed technology, the method of transferring socks from the sock machine to the sewing equipment to sew the sock toes will use a sewing mechanism and a scissor device. The technical solution with patent number CN200980120878.6 has a scissor structure whose thread cutting movement direction is parallel to the axial rotation of the upper sewing needle. After the scissor assembly cuts the thread, the scissor assembly moves toward the rear side of the guide wire sheet, and its movement direction is also consistent with the direction of the sewing mechanism 1 exiting the sewing work. In actual use, this scissor assembly device often encounters the situation that the scissors occasionally fail to completely cut the sewing thread, and the sewing thread will be pulled off the guide wire sheet, resulting in subsequent sewing failure and defective fabric production, leading to shutdown failure. How to avoid the above technical problems is the object of research of those skilled in the art. Summary of the invention

[0003] The invention provides a scissor device for a hosiery machine, which can cut in different directions so that even if the scissors occasionally fail to completely cut the sewing thread, the sewing thread will not be pulled off the guide wire to affect subsequent sewing work.

[0004] A scissor device for a hosiery machine comprises a hosiery sewing device and a scissor mechanism assembly installed on the sewing device, wherein the scissor mechanism assembly comprises a first scissor blade and a second scissor blade, wherein the first scissor blade is installed on a first linear track, and the first scissor blade is driven by a first driving device to move linearly forward and backward along the first linear track, and the second scissor blade is installed on a second linear track, and the second scissor blade is driven by a second driving device to move linearly forward and backward along the second linear track, and the first scissor blade and the second scissor blade cross each other during the process of the linear motion, and the socks sewing line is cut at the intersection. The scissor device for a hosiery machine adopts a first scissor blade and a second scissor blade that move linearly, and cross each other during the process of the linear motion to cut the socks sewing line, which not only has a good shearing effect, but also is not easy to have the problem of continuous cutting. Even if the sewing line hanging on the guide wire is not cut in some cases, it will not cause the problem of pulling off the sewing line, because the shearing direction is not a rotation direction, and the sewing line cannot be rotated out of the guide wire, so as to avoid the subsequent sewing failure after pulling off, and the production of defective fabrics and cause shutdown failure.

[0005] The first driving device includes a first piston rod, and the first piston rod drives the first scissor blade to move along the first linear track. The power source of the first piston rod can come from a power element such as a cylinder or a hydraulic cylinder, and the existing technology can be used to drive it to move forward and backward, thereby achieving the technical purpose of the first scissor blade moving along the first linear track. The first scissor blade includes a first protrusion and a second protrusion respectively located on the outside of the two ends of the first linear track, and the side of the second protrusion is connected to a third protrusion, and the third protrusion is cooperatively connected to one end of the first return spring, and the other end of the first return spring is installed in the first mounting hole inside the main plate of the first linear track. The first return spring combines with the first piston rod to push the first scissor blade to reciprocate along the first linear track. Not only is the structure energy-saving, but also the failure rate is low and the movement performance is reliable.

[0006] The first linear track is arranged on the side of the first linear track main body plate, the first scissor blade is embedded in the first linear track, the outer side of the first scissor blade is limited by the first cover plate to prevent it from leaving the first linear track, and the first cover plate is fixedly connected to the first linear track main body plate to ensure that the first scissor blade can only run along the first linear track, thereby improving the stability of the movement.

[0007] The second driving device includes a second piston rod, which drives the second scissor blade to move along the second linear track. The power source of the second piston rod can come from a power element such as a cylinder or a hydraulic cylinder, and the existing technology can be used to drive it to move forward and backward, thereby achieving the technical purpose of the second scissor blade moving along the second linear track. The second scissor blade includes a fourth protrusion and a seventh protrusion respectively located outside the two ends of the second linear track, the seventh protrusion cooperates to connect one end of the second return spring, and the other end of the second return spring is installed in the second mounting hole of the second linear track main body plate. The second return spring combines with the second piston rod to push the second scissor blade to reciprocate along the second linear track, which is not only energy-saving in structure, but also has low failure rate and reliable motion performance. A third mounting hole for installing the second piston rod is provided inside the second linear track main body plate, and the second piston rod cooperates to drive the eighth protrusion provided on the side of the second scissor blade. The eighth protrusion is preferably used as a structure to drive the second scissor blade to move from the side to avoid structural interference, thereby improving the overall spatial design performance of the second driving device.

[0008] The second linear track is arranged on the side of the second linear track main body plate, the second scissor blade is embedded in the second linear track, the outer side of the second scissor blade is limited by the second cover plate to prevent it from detaching from the second linear track, and the second cover plate is fixedly connected to the second linear track main body plate to ensure that the second scissor blade can only run along the second linear track, thereby improving the stability of the movement.

[0009] The fourth raised cross section of the second scissor blade is a V-shaped opening. After the first scissor blade and the second scissor blade move forward and backward in a straight line to cross each other and cut the thread and close, the sock sewing device moves along the first driving rod to exit the sewing work and pulls off the suture thread that has not been completely cut, and the suture thread on the guide wire will not fall off. The fourth raised cross section of the second scissor blade is a V-shaped opening. Not only does it have a good cutting ability as a cutting edge, but the V-shaped opening can also hold up the suture thread while cutting, further preventing the suture thread on the guide wire from falling off.

[0010] The sock sewing device comprises a first sewing needle and a second sewing needle which rotate with each other to sew the toes of the socks. The rotation direction of the first sewing needle and the second sewing needle which rotate with each other to sew the toes of the socks, the direction in which the guide wire guides the sewing thread, and the shearing direction in which the first scissor blade cooperates with the second scissor blade to cross-cut the sock sewing thread are all different. By applying forces in different directions, the sewing thread is prevented from detaching from the guide wire, thereby improving the sewing thread cutting effect.

[0011] The present invention cross-cuts the sock sutures by the forward and backward linear motion of the first scissor blade and the second scissor blade, thereby generating shear forces in different directions, thereby avoiding the technical problem that the sutures are pulled off the guide wire by the rotary shear force during the cutting process of traditional rotary scissors. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of a scissor device for a hosiery knitting machine according to the present invention; Figure 2 It is a partial cross-sectional structural schematic diagram of a scissor device for a hosiery knitting machine according to the present invention; Figure 3 It is a schematic diagram of the exploded installation structure of the scissor mechanism assembly in the present invention; Figure 4 It is a working schematic diagram of a scissor device for a hosiery machine of the present invention when waiting for thread cutting; Figure 5 It is a schematic diagram of the working state of a scissor device used in a hosiery machine when cutting thread according to the present invention; Figure 6 It is a working schematic diagram of a scissor device for a hosiery knitting machine of the present invention when completing thread cutting; Figure 7 The present invention is a schematic diagram of the operation of a sock sewing device retreating after a scissor device for a sock knitting machine completes thread cutting.

[0013] The components of the present invention are numbered as follows: sewing device 1, first suture needle 2, second suture needle 3, guide wire 4, scissor mechanism assembly 5, second scissor blade 6, first scissor blade 7, sock needle 14, sock suture thread 41, first linear track main plate 50, first drive rod 51, third mounting hole 52, first linear track 53, second cover plate 54, second linear track 55, second linear track main plate 56, second mounting hole 57, eighth protrusion 61, second piston rod 62, second return spring 63, fourth protrusion 66, seventh protrusion 67, first return spring 71, first cover plate 72, first protrusion 78, second protrusion 77, third protrusion 76, first mounting hole 97. DETAILED DESCRIPTION

[0014] The following is combined with Figure 1-7 The specific implementation method further explains the technical solution of this patent in detail.

[0015] like Figure 1 The scissor device for a hosiery machine shown in the figure comprises a sock sewing device 1 and a scissor mechanism assembly 5 installed on the sewing device 1. The sewing device 1 and the scissor mechanism assembly 5 are in a mutually coordinated relationship. The sewing device 1 is mainly used to sew the sock toes after the socks are knitted in the hosiery machine, especially in a hosiery knitting and sewing integrated hosiery machine. This sewing device 1 is now quite common. It realizes the sewing of the sock toes by rotating the first sewing needle 2 and the second sewing needle 3 relative to each other. The sewing device 1 as a whole is installed on a frame that can be advanced and retreated formed by two first driving rods 51. The first driving rod 51 drives the entire sewing device 1 to advance and retreat, thereby realizing the sewing function of the sock toes. Here, the sewing device 1 and the scissor mechanism assembly 5 are required to be a relatively integrated structure to achieve the synchronous performance of sewing and thread cutting.

[0016] In order to avoid the technical problem that the rotary shear force pulls the suture thread off the guide wire during the thread cutting process of traditional rotary scissors, such as Figure 2 He Ru Figure 3 The scissor mechanism assembly 5 shown includes a first scissor blade 7 and a second scissor blade 6. The first scissor blade 7 is installed on a first linear track 53, and the first scissor blade 7 is driven by a first driving device to move forward and backward along the first linear track 53. The second scissor blade 6 is installed on a second linear track 55, and the second scissor blade 6 is driven by a second driving device to move forward and backward along the second linear track 55. The first scissor blade 7 and the second scissor blade 6 cross each other during the forward and backward linear motion, and cut the sock stitching line 41 at the intersection. These two scissor blades cut the stitching line at the intersection through the mutually linear crossing motion, which changes the traditional scissors rotation shearing speed and good shearing effect, and is more suitable for high-speed sock machines. Moreover, the angle direction of this shearing is different from the sewing direction of the two suture needles of the sewing equipment 1 to avoid the technical problem of bringing the stitching line out of the guide wire 4 in the same direction.

[0017] On the basis of other technical structures remaining unchanged, as a preferred structure, further embodiment 1: the first driving device includes a first piston rod, and the first piston rod drives the first scissor blade 7 to move along the first linear track 53. The first scissor blade 7 includes a first protrusion 78 and a second protrusion 77 respectively located outside the two ends of the first linear track 53, and the side of the second protrusion 77 is connected to a third protrusion 76, and the third protrusion 76 cooperates with one end of the first return spring 71, and the other end of the first return spring 71 is installed in the first mounting hole 97 inside the first linear track main body plate 50. The first linear track 53 is arranged on the side of the first linear track main body plate 50, and the first scissor blade 7 is embedded in the first linear track 53. The outer side of the first scissor blade 7 is limited by the first cover plate 72 to prevent it from leaving the first linear track 53, and the first cover plate 72 is fixedly connected to the first linear track main body plate 50. The above technical structure realizes the technical effect that the first piston rod combined with the first return spring 71 drives the first scissor blade 7 to reciprocate along the first linear track 53, and the performance is stable under high-speed movement without shaking and other problems, and also avoids the problem of poor shearing effect caused by the increase in the gap between the rotating axis of the traditional scissors and the scissors mounting hole.

[0018] On the basis of other technical structures remaining unchanged, as a structural preference, further embodiment 2: the second driving device includes a second piston rod 62, and the second piston rod 62 drives the second scissor blade 6 to move along the second linear track 55. The second scissor blade 6 includes a fourth protrusion 66 and a seventh protrusion 67 respectively located outside the two ends of the second linear track 55, and the seventh protrusion 67 cooperates with one end of the second return spring 63, and the other end of the second return spring 63 is installed in the second mounting hole 57 of the second linear track main body plate 56. The interior of the second linear track main body plate 56 is provided with a third mounting hole 52 for mounting the second piston rod 62, and the second piston rod 62 cooperates with the eighth protrusion 61 provided on the side of the second scissor blade 6. The second linear track 55 is provided on the side of the second linear track main body plate 56, and the second scissor blade 6 is embedded in the second linear track 55. The outer side of the second scissor blade 6 is limited by the second cover plate 54 to prevent it from being separated from the second linear track 55, and the second cover plate 54 is fixedly connected to the second linear track main body plate 56. The above technical structure realizes the technical effect that the second piston rod combined with the second return spring 63 drives the second scissor blade 6 to reciprocate along the second linear track 55. The performance is stable under high-speed movement and will not cause problems such as shaking. It also avoids the problem of poor shearing effect caused by the increase in the gap between the rotating axis of traditional scissors and the scissors mounting hole.

[0019] In order to further prevent the suture thread on the guide wire 4 from falling off, the cross-section of the fourth protrusion 66 of the second scissor blade 6 is a V-shaped opening. After the first scissor blade 7 and the second scissor blade 6 move straight forward and backward to cross-cut the threads and close them, the sock sewing device 1 moves along the first driving rod 51 to exit the sewing work and pulls off the suture thread 41 that has not been completely cut. At the same time, the suture thread on the guide wire 4 will not fall off.

[0020] like Figure 4-7 The figure shows a dynamic schematic diagram for understanding the scissor device of the present invention for a hosiery machine from the waiting state for thread cutting, the state of preparing for thread cutting, the state of completing thread cutting, and the state of retreating the sock sewing device 1 after completing thread cutting. Finally, after the sock sewing device 1 is completely withdrawn, the suture 41 is broken into two sections, one section cooperates with the guide wire 4, and the other section cooperates with the sock needle 14 to achieve the continuous working performance of the hosiery machine and reduce the downtime failure. The sock sewing device 1 includes a first suture needle 2 and a second suture needle 3 that rotate with each other to sew the sock toe. The rotation direction of the first suture needle 2 and the second suture needle 3 that rotate with each other to sew the sock toe, the direction of the guide wire 4 guiding the suture, and the shearing direction of the first scissor blade 7 and the second scissor blade 6 to cross-cut the sock suture 41 are all different, thereby solving the technical problem that the rotation shearing force pulls the suture off the guide wire in the traditional rotary scissor shearing process.

[0021] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A scissor device for a hosiery machine, comprising a hosiery sewing device (1) and a scissor mechanism assembly (5) mounted on the sewing device (1), characterized in that: The scissor mechanism assembly (5) comprises a first scissor blade (7) and a second scissor blade (6); the first scissor blade (7) is mounted on a first linear track (53); the first scissor blade (7) is driven by a first driving device to move forward and backward linearly along the first linear track (53); the second scissor blade (6) is mounted on a second linear track (55); the second scissor blade (6) is driven by a second driving device to move forward and backward linearly along the second linear track (55); the first scissor blade (7) and the second scissor blade (6) intersect with each other during the forward and backward linear movement, and the sock seam line (41) is sheared at the intersection.

2. A scissor device for a hosiery knitting machine according to claim 1, characterized in that: The first driving device comprises a first piston rod, and the first piston rod drives the first scissor blade (7) to move along the first linear track (53).

3. A scissor device for a hosiery knitting machine according to claim 2, characterized in that: The first scissor blade (7) comprises a first protrusion (78) and a second protrusion (77) respectively located outside the two ends of the first linear track (53); the second protrusion (77) is connected to a third protrusion (76) on its side; the third protrusion (76) is cooperatively connected to one end of a first return spring (71); the other end of the first return spring (71) is mounted in a first mounting hole (97) inside the first linear track main body plate (50).

4. A scissor device for a hosiery machine according to claim 2, characterized in that: The first linear track (53) is arranged on the side of the first linear track main body plate (50), the first scissor blade (7) is embedded in the first linear track (53), the outer side of the first scissor blade (7) is limited by a first cover plate (72) to prevent it from being separated from the first linear track (53), and the first cover plate (72) is fixedly connected to the first linear track main body plate (50).

5. A scissor device for a hosiery knitting machine according to claim 1, characterized in that: The second driving device comprises a second piston rod (62), and the second piston rod (62) drives the second scissor blade (6) to move along the second linear track (55).

6. A scissor device for a hosiery knitting machine according to claim 5, characterized in that: The second scissor blade (6) comprises a fourth protrusion (66) and a seventh protrusion (67) respectively located outside the two ends of the second linear track (55); the seventh protrusion (67) is cooperatively connected to one end of the second return spring (63); the other end of the second return spring (63) is installed in the second installation hole (57) of the second linear track main plate (56).

7. A scissor device for a hosiery machine according to claim 6, characterized in that: The second linear track main body plate (56) is provided with a third mounting hole (52) for mounting a second piston rod (62), and the second piston rod (62) cooperates to drive an eighth protrusion (61) provided on the side of the second scissor blade (6).

8. A scissor device for a hosiery machine according to claim 5, characterized in that: The second linear track (55) is arranged on the side of the second linear track main body plate (56), the second scissor blade (6) is embedded in the second linear track (55), the outer side of the second scissor blade (6) is limited by the second cover plate (54) to prevent it from being separated from the second linear track (55), and the second cover plate (54) is fixedly connected to the second linear track main body plate (56).

9. A scissor device for a hosiery knitting machine according to claim 1, characterized in that: The fourth protrusion (66) of the second scissor blade (6) has a V-shaped opening in cross section. After the first scissor blade (7) and the second scissor blade (6) move forward and backward in a straight line to cross each other and cut the threads together, the sock sewing device (1) moves along the first driving rod (51) to exit the sewing operation, and the sewing thread (41) that has not been completely cut is pulled off, and at the same time, the sewing thread on the guide wire (4) will not fall off.

10. A scissor device for a hosiery machine according to claim 1, characterized in that: The sock sewing device (1) comprises a first sewing needle (2) and a second sewing needle (3) which rotate with each other to sew the toe of a sock, wherein the rotation direction of the first sewing needle (2) and the second sewing needle (3) rotating with each other to sew the toe of the sock, the direction of the sewing thread guided by the guide wire (4), and the shearing direction of the first scissor blade (7) cooperating with the second scissor blade (6) to cross-cut the sock sewing thread (41) are all different.

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