A novel scissors device and working control method thereof

Abstract

The present invention mainly relates to a novel scissors device, including a scissors frame, a rotating shaft is movably provided on the scissors frame, a scissors, a movable sheet and a pressing sheet are sequentially provided on the rotating shaft, and the rotating shaft can drive the scissors to rotate; the movable sheet is movably installed between the pressing sheet and the scissors, and an opening is provided at the end of the pressing sheet, the opening is a wire pressing opening, and the movable sheet can rotate relative to the pressing sheet; a first connecting rod mechanism is connected to the movable sheet, and the movable sheet is connected to the first driving shaft through the first connecting rod mechanism; both sides of the movable sheet cooperate with the wire pressing opening respectively to realize the separate wire pressing control of multiple yarns; a second connecting rod mechanism is connected to the rotating shaft, and the rotating shaft is connected to the second driving shaft through the second connecting rod mechanism; a hook knife is slidably installed on the side of the scissors frame; the second driving shaft can simultaneously control and drive the scissors and the hook knife to move. The design structure is simple and ingenious, and the control is stable. It can perform separate wire pressing control on multiple yarns. When multiple yarns are switched, there is no need to reconnect the wires, thereby improving work efficiency.

Description

Technical Field

[0001] The invention relates to a novel scissors device and a working control method thereof, belonging to the technical field of knitting machinery. Background Art

[0002] The horizontal knitting machine is used for knitting gloves, socks and other items. The horizontal knitting machine includes a scissors device, which is used for cutting the yarn. The scissors device includes scissors and a hook knife. The scissors and the hook knife need to cooperate with each other to complete the work. The existing scissors device has a complex control structure and unstable control. When the scissors and the hook knife work together, they also need to be assisted by a wire pressing mechanism. The wire pressing mechanism is used to press the yarn to prevent wire jumping after the yarn is cut. If wire jumping occurs, the yarn needs to be reconnected, which is very troublesome. When working, the wire pressing mechanism presses the yarn first, and then the scissors cut the yarn. After the yarn is cut, it is still pressed by the wire pressing mechanism so that the yarn can continue to be woven and used.

[0003] The existing thread pressing mechanism has a complex structure. The thread pressing mechanism can only press one type of yarn, or can only press and release multiple yarns at the same time, and cannot be controlled individually. When multiple yarns need to be switched in subsequent weaving, it can only be achieved by rewiring, which affects work efficiency. Summary of the invention

[0004] To solve the above problems, the present invention provides a new scissors device and a working control method thereof. The design structure is simple and ingenious, the control is stable, and it can perform individual wire pressing control on multiple yarns. When switching between multiple yarns, there is no need to reconnect the wires, thereby improving work efficiency.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A novel scissors device comprises a scissors frame, a rotating shaft is movably provided on the scissors frame, a scissors, a movable sheet and a pressing sheet are sequentially provided on the rotating shaft, the rotating shaft can drive the scissors to rotate to cut the yarn; the movable sheet is movably installed between the pressing sheet and the scissors, an opening is provided at the end of the pressing sheet, the opening is a thread pressing opening, and the movable sheet can rotate relative to the pressing sheet; a first connecting rod mechanism is connected to the movable sheet, and the movable sheet is connected to a first driving shaft through the first connecting rod mechanism to realize the rotation control of the movable sheet; when the movable sheet rotates, both sides of the movable sheet cooperate with the thread pressing opening respectively to realize the separate thread pressing control of multiple yarns;

[0007] A second connecting rod mechanism is connected to the rotating shaft, and the rotating shaft is connected to the second driving shaft through the second connecting rod mechanism, thereby realizing the rotation of the scissors; a hook knife is slidably installed on the side of the scissors frame, and the hook knife is connected and cooperated with the second driving shaft; the second driving shaft can simultaneously control and drive the scissors and the hook knife to move.

[0008] When the movable sheet rotates to the left relative to the pressing sheet, the left side of the movable sheet cooperates with the thread pressing opening to realize left-side thread pressing; when the movable sheet rotates to the right relative to the pressing sheet, the right side of the movable sheet cooperates with the thread pressing opening to realize right-side thread pressing; when the movable sheet and the thread pressing opening of the pressing sheet completely cover and overlap, both sides of the movable sheet can press the yarn at the same time.

[0009] The scissors frame is provided with a positioning pin, and the movable piece is provided with a limiting groove, which is installed in cooperation with the positioning pin and is used to limit the rotation range of the movable piece; the pressing piece is fixedly installed and is fixed in cooperation with the rotating shaft and the positioning pin respectively.

[0010] Inner notches are arranged on both sides of the movable sheet, and the inner notches on both sides of the movable sheet cooperate with the wire pressing openings respectively to realize wire pressing on both sides of the movable sheet.

[0011] The end of the movable piece is an arrow-shaped structure, and a V-shaped wire inlet channel is connected to the opening of the wire pressing port. The arrow-shaped structure cooperates with the wire inlet channel up and down to form two wire inlets, which can guide the wire pressing on both sides.

[0012] Another pressing sheet is arranged between the movable sheet and the scissors.

[0013] The first connecting rod mechanism comprises a shifting rod and a control rod 1, the shifting rod is rotatably mounted on the scissors frame, one end of the shifting rod is connected to the movable sheet, and the other end of the shifting rod is connected to the control rod 1, and the control rod 1 is mounted on the first driving shaft.

[0014] The scissors comprise an upper blade and a lower blade, wherein the upper blade is a movable blade, the rotating shaft drives the upper blade to move, and the upper blade and the lower blade cooperate to achieve shearing.

[0015] The second connecting rod mechanism includes a rotating rod, a transmission rod and a second control rod. The transmission rod is rotatably installed on the scissors frame. The rotating shaft is connected to the rotating rod. The other end of the rotating rod is connected to the transmission rod. The other end of the transmission rod is cooperatively connected to the second control rod. The second control rod is installed on the second driving shaft. A tension spring is provided on one end of the transmission rod connected to the rotating rod, and the other end of the tension spring is connected to the scissors frame. The tension spring is used for resetting the scissors after they rotate and shear the yarn.

[0016] The control rod 2 is provided with a control groove, and the transmission rod is provided with a convex rod on the matching end with the control rod 2. The convex rod is installed in coordination with the control groove. The control groove is used to realize the delayed operation of the scissors, that is, the scissors only cut the yarn when the hook knife completes the yarn hooking, thereby realizing the coordinated control of the hook knife and the scissors.

[0017] A scissor torsion spring is connected between the hook knife and the second driving shaft, and the second driving shaft drives the hook knife to slide up and down through the scissor torsion spring to achieve yarn hooking.

[0018] The scissors frame is provided with a limiting tube, which is used to limit the range of movement of the scissors torsion spring, thereby limiting the sliding range of the hook knife.

[0019] A novel working control method of a scissor device comprises the following steps:

[0020] 1. The driving device drives the second driving shaft, and the second driving shaft drives the hook knife to slide upward through the scissors torsion spring to hook the yarn (at this time, since there is a certain distance between the control groove on the second control rod and the convex rod in the second connecting rod mechanism, the scissors will not work);

[0021] 2. After the hook knife hooks the yarn, the second driving shaft drives the hook knife to slide downward, and the hook knife drives the yarn to pull down;

[0022] 3. When the hook knife drives the yarn to be pulled down and the yarn is hooked, the driving device drives the first driving shaft, and the first driving shaft controls the rotation of the movable sheet through the first connecting rod mechanism to achieve one side thread pressing;

[0023] 4. After the hook knife finishes hooking the yarn, the second driving shaft continues to move. At this time, the control groove contacts the convex rod. Through the linkage of the second connecting rod mechanism, when the movable piece completes the pressing line, the scissors immediately cut the yarn;

[0024] 5. Repeat the above steps and use the inner notches on both sides of the movable piece to achieve separate thread pressing control for the two yarns;

[0025] 6. The first driving shaft is used to control the rotation of the movable plate as needed to release the yarn to be used, so that the yarn can continue to be used in the weaving work. The yarn on the other side that is not used temporarily is still pressed by the movable plate and will not jump, which is convenient for subsequent use.

[0026] The present invention has the following beneficial effects:

[0027] 1. A novel scissors device comprises a scissors frame, a rotating shaft is movably provided on the scissors frame, a scissors, a movable sheet and a pressing sheet are arranged on the rotating shaft in sequence, the rotating shaft can drive the scissors to rotate to cut the yarn; the movable sheet is movably installed between the pressing sheet and the scissors, an opening is provided at the end of the pressing sheet, the opening is a thread pressing opening, and the movable sheet can rotate relative to the pressing sheet; a first connecting rod mechanism is connected to the movable sheet, and the movable sheet is connected to the first driving shaft through the first connecting rod mechanism to realize the rotation control of the movable sheet; when the movable sheet rotates, the two sides of the movable sheet cooperate with the thread pressing opening respectively to realize the separate thread pressing control of multiple yarns;

[0028] The rotating shaft is connected to a second connecting rod mechanism, and the rotating shaft is connected to a second driving shaft through the second connecting rod mechanism, thereby realizing the rotation of the scissors; a hook knife is slidably installed on the side of the scissor frame, and the hook knife is connected and matched with the second driving shaft; the second driving shaft can simultaneously control the movement of the scissors and the hook knife. The design structure is simple and ingenious, and the control is stable. It can perform separate pressure control on multiple yarns. When switching between multiple yarns, there is no need to reconnect the wires, thereby improving work efficiency.

[0029] 2. The end of the movable piece is an arrow-shaped structure, and a V-shaped wire inlet channel is connected to the opening of the wire pressing port. The arrow-shaped structure and the wire inlet channel are stacked up and down to form two wire inlets. The wire inlets can guide the wire pressing on both sides, making it convenient for the yarn to enter the wire pressing port.

[0030] 3. Another pressing piece is provided between the movable piece and the scissors. The installation sequence is scissors, pressing piece, movable piece, pressing piece, which further ensures that the pressing line is firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A perspective view of the present invention;

[0032] Figure 2 A three-dimensional diagram of another viewing angle of the present invention;

[0033] Figure 3 A three-dimensional diagram of a part of the present invention;

[0034] Figure 4 It is a three-dimensional diagram of the wire pressing mechanism of the present invention;

[0035] Figure 5 For the present invention Figure 4 Split diagram of ;

[0036] Figure 6 It is a stereoscopic diagram of the wire pressing mechanism of the present invention from another perspective.

[0037] Numbers in the figure: 1. scissors frame; 11. rotating shaft; 12. first driving shaft; 13. second driving shaft; 14. positioning pin; 15. limiting tube; 16. tension spring; 2. scissors; 21. upper blade; 22. lower blade; 3. movable sheet; 31. limiting groove; 32. inner recess; 33. arrow-shaped structure; 4. pressing sheet; 41. wire pressing port; 42. wire entry channel; 5. first connecting rod mechanism; 51. shifting rod; 52. control rod one; 6. second connecting rod mechanism; 61. rotating rod; 62. transmission rod; 621. convex rod; 63. control rod two; 631. control groove; 7. hook knife; 8. wire entry port; 9. scissors torsion spring. DETAILED DESCRIPTION

[0038] like Figure 1 , 2As shown in Figures 3 and 4, a novel scissors device comprises a scissors frame 1, on which a rotating shaft 11 is movably provided, on which a pair of scissors 2, a movable sheet 3 and a pressing sheet 4 are arranged in sequence, and the rotating shaft 11 can drive the scissors 2 to rotate to cut the yarn; the movable sheet 3 is movably installed between the pressing sheet 4 and the scissors 2, and an opening is provided at the end of the pressing sheet 4, which is a wire pressing opening 41, and the movable sheet 3 can rotate relative to the pressing sheet 4; a first connecting rod mechanism 5 is connected to the movable sheet 3, and the movable sheet 3 is connected to the first driving shaft 12 through the first connecting rod mechanism 5 to realize the rotation control of the movable sheet 3; when the movable sheet 3 rotates, the two sides of the movable sheet 3 cooperate with the wire pressing opening 41 respectively to realize the separate wire pressing control of multiple yarns;

[0039] The rotating shaft 11 is connected with a second connecting rod mechanism 6, and the rotating shaft 11 is connected with a second driving shaft 13 through the second connecting rod mechanism 6, so as to realize the rotation of the scissors 2; a hook knife 7 is slidably installed on the side of the scissors frame 1, and the hook knife 7 is connected and matched with the second driving shaft 13; the second driving shaft 13 can simultaneously control and drive the scissors 2 and the hook knife 7 to move. The design structure is simple and ingenious, the control is stable, and the wire pressing control of multiple yarns can be performed separately. When switching multiple yarns, there is no need to reconnect the wires, thereby improving work efficiency.

[0040] When the movable sheet 3 rotates to the left relative to the pressing sheet 4, the left side of the movable sheet 3 cooperates with the wire pressing opening 41 to realize left-side wire pressing; when the movable sheet 3 rotates to the right relative to the pressing sheet 4, the right side of the movable sheet 3 cooperates with the wire pressing opening 41 to realize right-side wire pressing; when the movable sheet 3 and the wire pressing opening 41 of the pressing sheet 4 completely cover and overlap, both sides of the movable sheet 3 can press the yarn at the same time.

[0041] During operation, the hook knife 7 hooks yarn A and controls the movable piece 3 to rotate leftward. The left side of the movable piece 3 presses yarn A into the thread pressing opening 41, and the scissors 2 cut off yarn A. Then the hook knife 7 hooks yarn B and controls the movable piece 3 to rotate rightward. The right side of the movable piece 3 presses yarn B into the thread pressing opening 41, and the scissors 2 cut off yarn B. The movable piece 3 rotates slightly. When the movable piece 3 and the thread pressing opening 41 are completely covered and overlapped, yarns A and B are pressed on both sides of the movable piece 3 respectively. Finally, the movable piece 3 is controlled to rotate as needed to release the yarn to be used and continue the weaving work. The yarn that is not used temporarily on the other side is still pressed and will not jump, which is convenient for subsequent use (the above-mentioned yarn A and yarn B are for the convenience of distinguishing and describing).

[0042] Combination Figure 5 As shown, a positioning pin 14 is provided on the scissors frame 1, and a limiting groove 31 is provided on the movable piece 3. The limiting groove 31 is installed in cooperation with the positioning pin 14, and the limiting groove 31 is used to limit the rotation range of the movable piece 3; the pressing piece 4 is fixedly installed, and the pressing piece 4 is respectively fixed in cooperation with the rotating shaft 11 and the positioning pin 14.

[0043] Inner notches 32 are provided on both sides of the movable sheet 3 . When the movable sheet 3 is rotated, the inner notches 32 on both sides of the movable sheet 3 cooperate with the wire pressing openings 41 respectively to achieve wire pressing on both sides of the movable sheet 3 .

[0044] The end of the movable piece 3 is an arrow-shaped structure 33, and the opening of the wire pressing port 41 is connected to a V-shaped wire inlet channel 42. The arrow-shaped structure 33 and the wire inlet channel 42 are stacked up and down to form two wire inlets 8. The wire inlet 8 can guide the wire pressing on both sides, making it convenient for the yarn to enter the wire pressing port 41.

[0045] Combination Figure 6 As shown, another pressing sheet 4 is provided between the movable sheet 3 and the scissors 2, and the installation sequence is scissors 2, pressing sheet 4, movable sheet 3, pressing sheet 4, which further ensures that the pressing line is firm.

[0046] like Figure 1 As shown, the first connecting rod mechanism 5 includes a lever 51 and a control rod 52. The lever 51 is rotatably installed on the scissors frame 1. One end of the lever 51 is connected to the movable piece 3, and the other end of the lever 51 is connected to the control rod 52. The control rod 52 is installed on the first driving shaft 12. When working, the driving device drives the first driving shaft 12, thereby driving the control rod 52 to rotate, and the control rod 52 drives the lever 51, thereby realizing the rotation control of the movable piece 3 and realizing the pressing line.

[0047] Combination Figure 6 As shown, the scissors 2 include an upper blade 21 and a lower blade 22. The upper blade 21 is a movable blade. The rotating shaft 11 drives the upper blade 21 to move. The upper blade 21 and the lower blade 22 cooperate to achieve shearing.

[0048] like Figure 1 As shown, the second connecting rod mechanism 6 includes a rotating rod 61, a transmission rod 62 and a second control rod 63. The transmission rod 62 is rotatably installed on the scissors frame 1, the rotating shaft 11 is connected to the rotating rod 61, the other end of the rotating rod 61 is connected to the transmission rod 62, the other end of the transmission rod 62 is cooperatively connected with the second control rod 63, and the second control rod 63 is installed on the second driving shaft 13; when working, the driving device drives the second driving shaft 13, thereby driving the second control rod 63 to rotate, the second control rod 63 drives the transmission rod 62, the transmission rod 62 drives the rotating rod 61 to rotate, and the rotating rod 61 drives the rotating shaft 11 to realize the rotation of the scissors 2.

[0049] Combination Figure 3As shown, a control groove 631 is provided on the control rod 63, and a convex rod 621 is provided on the matching end of the transmission rod 62 with the control rod 63. The convex rod 621 is installed in coordination with the control groove 631. Since the second driving shaft 13 can simultaneously control and drive the scissors 2 and the hook knife 7 to move, the control groove 631 is used to realize the delayed operation of the scissors 2, that is, the scissors 2 only cut the yarn when the hook knife 7 completes the yarn hooking, thereby realizing coordinated control; in the process of the second driving shaft 13 driving the hook knife 7 to hook the yarn, there is a certain contact distance between the control groove 631 of the control rod 63 and the convex rod 621, and the scissors 2 are in a non-working state. When the hook knife 7 completes the yarn hooking, the control groove 631 contacts the convex rod 621, thereby controlling and driving the scissors 2 to cut the yarn.

[0050] A scissor torsion spring 9 is connected between the hook knife 7 and the second driving shaft 13. The second driving shaft 13 drives the hook knife 7 to slide up and down through the scissor torsion spring 9 to achieve yarn hooking.

[0051] A limiting tube 15 is provided on the scissors frame 1 , and the limiting tube 15 is used to limit the range of movement of the scissors torsion spring 9 , thereby limiting the sliding range of the hook knife 7 .

[0052] A tension spring 16 is provided on one end of the transmission rod 62 connected to the rotating rod 61, and the other end of the tension spring 16 is connected to the scissors frame 1. The tension spring 16 is used for the scissors 2 to reset after rotating to cut the yarn.

[0053] The specific work control methods are as follows:

[0054] 1. The driving device drives the second driving shaft 13, and the second driving shaft 13 drives the hook knife 7 to slide upward through the scissors torsion spring 9 to hook the yarn (at this time, since there is a certain distance between the control groove 631 on the control rod 63 and the protruding rod 621 in the second connecting rod mechanism 6, the scissors 2 will not work);

[0055] 2. After the hook knife 7 hooks the yarn, the second driving shaft 13 drives the hook knife 7 to slide downward, and the hook knife 7 drives the yarn to pull down;

[0056] 3. When the hook knife 7 drives the yarn to be pulled down and the yarn is hooked, the driving device drives the first driving shaft 12, and the first driving shaft 12 controls the movable sheet 3 to rotate through the first connecting rod mechanism 5 to achieve one side thread pressing;

[0057] 4. After the hooking knife 7 has finished hooking the yarn, the second driving shaft 13 continues to move, and at this time the control groove 631 contacts the protruding rod 621. Through the linkage of the second connecting rod mechanism 6, when the movable sheet 3 has finished pressing the line, the scissors 2 immediately cut the yarn;

[0058] 5. Repeat the above steps and use the inner notches 32 on both sides of the movable sheet 3 to achieve separate thread pressing control for the two yarns;

[0059] 6. The first driving shaft 12 is used to control the rotation of the movable plate 3 as needed to release the yarn to be used, so that the yarn can continue to be used in the weaving work. The yarn on the other side that is not used temporarily is still pressed by the movable plate 3 and will not jump, which is convenient for subsequent reuse.

Claims

1. A novel scissors device, comprising a scissors frame, on which a rotating shaft is movably provided, characterized in that: The rotating shaft is provided with scissors, a movable sheet and a pressing sheet in sequence, and the rotating shaft can drive the scissors to rotate to cut the yarn; the movable sheet is movably installed between the pressing sheet and the scissors, and an opening is provided at the end of the pressing sheet, which is a thread pressing opening, and the movable sheet can rotate relative to the pressing sheet; a first connecting rod mechanism is connected to the movable sheet, and the movable sheet is connected to the first driving shaft through the first connecting rod mechanism to realize the rotation control of the movable sheet; when the movable sheet rotates, the two sides of the movable sheet cooperate with the thread pressing opening respectively to realize the separate thread pressing control of multiple yarns; The rotating shaft is connected to a second connecting rod mechanism, and the rotating shaft is connected to a second driving shaft through the second connecting rod mechanism, thereby realizing the rotation of the scissors; a hook knife is slidably installed on the side of the scissors frame, and the hook knife is connected and matched with the second driving shaft; the second driving shaft can simultaneously control and drive the scissors and the hook knife to move; The scissors frame is provided with a positioning pin, and the movable piece is provided with a limiting groove, which is installed in cooperation with the positioning pin, and is used to limit the rotation range of the movable piece; the pressing piece is fixedly installed, and the pressing piece is respectively fixed in cooperation with the rotating shaft and the positioning pin; The first linkage mechanism includes a lever and a control lever 1, the lever is rotatably mounted on the scissor frame, one end of the lever is connected to the movable sheet, the other end of the lever is connected to the control lever 1, and the control lever 1 is mounted on the first driving shaft; The second connecting rod mechanism includes a rotating rod, a transmission rod and a second control rod. The transmission rod is rotatably mounted on the scissors frame. The rotating shaft is connected to the rotating rod. The other end of the rotating rod is connected to the transmission rod. The other end of the transmission rod is cooperatively connected to the second control rod. The second control rod is mounted on the second driving shaft. One end of the transmission rod connected to the rotating rod is provided with a tension spring. The other end of the tension spring is connected to the scissors frame. The tension spring is used to reset the scissors after they rotate to shear the yarn. A control groove is provided on the control rod 2, and a convex rod is provided on the matching end of the transmission rod with the control rod 2. The convex rod is installed in coordination with the control groove. The control groove is used to realize the delayed operation of the scissors, that is, the scissors cut the yarn only when the hook knife completes hooking the yarn, thereby realizing the coordinated control of the hook knife and the scissors.

2. A novel scissor device according to claim 1, characterized in that: When the movable plate rotates to the left relative to the pressing plate, the left side of the movable plate cooperates with the thread pressing opening to realize left-side thread pressing; when the movable plate rotates to the right relative to the pressing plate, the right side of the movable plate cooperates with the thread pressing opening to realize right-side thread pressing; when the movable plate and the thread pressing opening of the pressing plate completely cover and overlap, both sides of the movable plate can press the yarn at the same time.

3. A novel scissors device according to claim 1 or 2, characterized in that: Inner notches are arranged on both sides of the movable sheet, and the inner notches on both sides of the movable sheet cooperate with the wire pressing openings respectively to realize wire pressing on both sides of the movable sheet.

4. A novel scissor device according to claim 1 or 2, characterized in that: The end of the movable piece is an arrow-shaped structure, and a V-shaped wire inlet channel is connected to the opening of the wire pressing port. The arrow-shaped structure cooperates with the wire inlet channel up and down to form two wire inlets, which can guide the wire pressing on both sides.

5. A novel scissor device according to claim 1, characterized in that: Another pressing sheet is arranged between the movable sheet and the scissors.

6. A novel scissor device according to claim 1, characterized in that: The scissors include an upper blade and a lower blade. The upper blade is a movable blade. The rotating shaft drives the upper blade to move. The upper blade and the lower blade cooperate to achieve shearing.

7. A novel scissor device according to claim 1, characterized in that: A scissor torsion spring is connected between the hook knife and the second driving shaft, and the second driving shaft drives the hook knife to slide up and down through the scissor torsion spring to achieve yarn hooking.

8. A novel scissor device according to claim 7, characterized in that: A limit tube is provided on the scissors frame, and the limit tube is used to limit the range of movement of the scissors torsion spring, thereby limiting the sliding range of the hook knife.

9. A working control method based on the novel scissors device according to claim 1, characterized in that: The steps include: 1) The driving device drives the second driving shaft, and the second driving shaft drives the hook knife to slide upward through the scissors torsion spring to hook the yarn; 2) After the hook knife hooks the yarn, the second driving shaft drives the hook knife to slide downward, and the hook knife drives the yarn to pull down; 3) When the hook knife drives the yarn to be pulled down and the yarn is hooked, the driving device drives the first driving shaft, and the first driving shaft controls the rotation of the movable sheet through the first connecting rod mechanism to achieve one side thread pressing; 4) After the hook knife finishes hooking the yarn, the second driving shaft continues to move, at which time the control groove contacts the convex rod, and through the linkage of the second connecting rod mechanism, when the movable piece completes the pressing line, the scissors immediately cut the yarn; 5) Repeat the above steps and use the inner notches on both sides of the movable sheet to achieve separate thread pressing control for the two yarns; 6) The first drive shaft is used to control the rotation of the movable plate as needed to release the yarn to be used, so that the yarn can continue to participate in the weaving work. The yarn on the other side that is not used temporarily is still pressed by the movable plate and will not jump, which is convenient for subsequent reuse.

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