Swing mechanism in sewing machine or button sewing machine

Abstract

The utility model provides a swing mechanism in a sewing machine or a button sewing machine, and belongs to the technical field of sewing machines. The button sewing machine solves the problem of how to enable the moving precision of buttons on the button sewing machine to be high. And the like. According to the swing mechanism in the sewing machine or the button sewing machine, the sewing machine or the button sewing machine comprises a rack, a first power source and a swing bottom plate are arranged on the rack, the swing mechanism comprises a swing disc and a connecting rod assembly, the first power source is connected with the swing disc and can drive the swing disc to swing relative to the rack, a first through groove is formed in the swing disc, and a second through groove is formed in the connecting rod assembly. The inner end of the connecting rod assembly is hinged to the first through groove and can slide in the first through groove, and the outer end of the connecting rod assembly is connected with the swing bottom plate. The inner end of the connecting rod assembly is hinged into the first through groove, the first through groove plays a role in limiting swinging of the connecting rod assembly, the swinging precision of the swinging bottom plate is improved, and the moving precision of the button on the swinging bottom plate is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing machine equipment and relates to a swing mechanism in a sewing machine or a button sewing machine. Background Art

[0002] A button sewing machine typically operates by controlling a mechanism on the machine through a motor or pneumatic cylinder. To position buttons, two motors are typically required to move the button placement platform along the x- and y-axes. Patent application number 202322666138.2 discloses a step-by-step presser foot lift and thread trimming mechanism for a button sewing machine, connecting the presser foot lift crank directly to the presser foot lever via a longitudinal connecting rod.

[0003] The patent with application number 202010827410.9 discloses a button sewing machine with stepper motor feeding and slide rod transmission, including a machine base, a Y-direction stepper motor, a Y-direction feeding lever, a Y-direction eccentric wheel, a Y-direction feeding connecting rod, a feeding slide, an X-direction stepper motor, an X-direction eccentric wheel, an X-direction feeding lever, and an X-direction feeding connecting rod. The feeding slide can realize the feeding action in two directions through two stepper motors and two sets of slide rod feeding mechanisms.

[0004] The button sewing machine in the patent document with the above application number 202010827410.9 controls the moving direction through the Y-direction eccentric wheel, and realizes movement through the Y-direction feeding lever, Y-direction feeding connecting rod, and feeding slide. However, there are still shortcomings. The structure of the above-mentioned button sewing machine is complicated, and the accuracy of button movement and positioning is reduced through multiple feeding structures. Summary of the Invention

[0005] The utility model aims at solving the above problems in the prior art and provides a swing mechanism in a sewing machine or a button sewing machine. The technical problem to be solved by the utility model is how to make the movement of buttons on the button sewing machine high in precision.

[0006] The purpose of this utility model can be achieved through the following technical solutions:

[0007] A swing mechanism in a sewing machine or a button sewing machine, the sewing machine or button sewing machine includes a frame, a power source and a swing base plate are provided on the frame, the swing mechanism includes a swing plate and a connecting rod assembly, and is characterized in that the power source is connected to the swing plate and can drive the swing plate to swing relative to the frame, the swing plate is provided with a through slot, the inner end of the connecting rod assembly is hinged on the through slot and can slide in the through slot, and the outer end of the connecting rod assembly is connected to the swing base plate.

[0008] Its working principle is as follows: a through slot is provided on the swing plate, and the through slot is hinged to the inner end of the connecting rod assembly. The swing plate is driven to swing by a power source, and the connecting rod assembly swings successively. The connecting rod assembly slides in the through slot, which increases the swing distance of the connecting rod assembly and can control the connecting rod assembly to swing back and forth. The connecting rod assembly is connected to a swing base plate, and the swing base plate is used to place buttons. The buttons on the swing base plate can be moved by the swing of the connecting rod assembly. The power source drives the swing plate to swing and directly controls the movement of the connecting rod assembly, thereby driving the buttons on the swing base plate to move. The transmission is stable, and the inner end of the connecting rod assembly is hinged in the through slot. The through slot and the swing of the connecting rod assembly play a limiting role, which improves the accuracy of the swing base plate when swinging and increases the accuracy of the button when moving on the swing base plate. It has the advantages of simple structure and easy manufacturing, saves costs, and has less wear.

[0009] In the swing mechanism of the above-mentioned sewing machine or button sewing machine, the through slot one includes an arc segment one, an arc segment two, a straight segment and an arc segment three, the arc segment one is connected to the arc segment two, and the two ends of the straight segment are respectively connected to the arc segment two and the arc segment three, the arc segment one and the arc segment three are respectively located at the two ends of the through slot one, and the inner end of the connecting rod assembly can respectively abut against the arc segment one and the arc segment three; or the through slot one is an arc-shaped slot, the middle section of the arc slot is arc-shaped, and the two ends of the arc slot can respectively abut against the inner end of the connecting rod assembly.

[0010] Arc segment one is connected to arc segment two, and the two are arc-shaped. The angle supported by the connecting rod assembly is large, which improves the stability of the swing. The two ends of the straight segment are respectively connected to arc segment two and arc segment three. When the connecting rod assembly slides to the straight segment, the angle supported by the connecting rod assembly is flat, which can make the swing more accurate. When the power source one drives the swing plate to swing, the inner end of the connecting rod assembly moves by abutting against the side wall in the through groove one. Arc segment one and arc segment three are respectively located at the two ends of the through groove one. When the inner end of the connecting rod assembly moves to arc segment one through the swing of the swing plate, the side wall of arc segment one abuts against the inner end of the connecting rod assembly. When the inner end of the connecting rod assembly moves to arc segment three through the swing of the swing plate, the side wall of arc segment three abuts against the inner end of the connecting rod assembly.

[0011] Another solution is that the through slot is an arc-shaped slot, both ends of the arc-shaped slot are arc-shaped, and the middle end is also arc-shaped. When the swing plate swings, the inner end of the connecting rod assembly slides in the through slot, and the inner end side wall of the connecting rod assembly abuts against one end side wall of the through slot. Due to the arc shape, the supported angle is large, which increases the stability of the swing.

[0012] In the above-mentioned swing mechanism of a sewing machine or button sewing machine, the connecting rod assembly includes a connecting rod 1, the inner end of the connecting rod 1 has a hinge shaft, the bottom of the hinge shaft is coaxially connected to a bearing or roller, and the side wall of the bearing or roller is located in a through groove 1 and can move in the through groove 1.

[0013] Connecting rod 1 has a hinge shaft, and the bottom of the hinge shaft is coaxially connected to a bearing or roller. The side wall of the bearing or roller abuts against the side wall of the through slot 1 to move connecting rod 1, thereby driving the swing base plate to swing, and moving and positioning the button on the swing base plate in the front and back directions. When power source 1 drives the swing plate to swing clockwise, the bearing or roller moves from arc segment 2 through the straight segment to arc segment 3, and connecting rod 1 moves toward the inner end successively, thereby driving the swing base plate to move the button.

[0014] In the above-mentioned swing mechanism of a sewing machine or button sewing machine, a slider and a guide rail are provided on the frame, the slider is located below the connecting rod 1, the slider is fixed on the frame, the guide rail can slide on the slider, the outer end of the connecting rod 1 is hinged to the inner end of the guide rail, the connecting rod assembly includes a connecting rod 2, the outer end of the guide rail is hinged to the inner end of the connecting rod 2, and the outer end of the connecting rod 2 is hinged to the swing base plate.

[0015] The slider is fixed on the frame, and the guide rail can slide on the slider. The slider has a limiting effect on the guide rail, so that the guide rail can only move in a straight line direction and will not deviate, so that the guide rail moves in a straight line direction. The inner end of the guide rail is connected to the outer end of the connecting rod one, and the power source drives the swing plate to swing to move the connecting rod one and drive the guide rail to move. The guide rail is located on the slider to make sliding smoother and increase the service life. The outer end of the guide rail is hinged to the inner end of the connecting rod two, and the connecting rod two is swung by the movement of the guide rail. The linear movement of the guide rail drives the connecting rod two to swing, thereby increasing the stability of the transmission. The outer end of the connecting rod two is hinged on the swing base plate, and the swing base plate can be driven to swing by the swing of the connecting rod two, thereby realizing the movement of the button.

[0016] The swing mechanism in the above-mentioned sewing machine or button sewing machine includes a crank 1, a power source 2 is provided on the frame, the inner end of the crank 1 is connected to the power source 2 and the power source 2 can drive the crank 1 to swing relative to the frame, the outer end of the crank 1 is hinged with a swing rod, the other end of the swing rod is hinged to the swing base plate, and the crank 1 is arranged opposite to the swing base plate.

[0017] The power source can drive crank 1 to swing relative to the frame. The outer end of crank 1 is hinged with a swing rod. The swing of crank 1 drives the swing rod to swing. Crank 1 is arranged opposite to the swing base plate. The swing rod is hinged to the swing base plate. Crank 1 swings left and right. Through the hinge of the swing rod, the swing base plate also swings left and right, thereby realizing the left and right movement of the buttons on the swing base plate.

[0018] In the above-mentioned swing mechanism of a sewing machine or button sewing machine, a pull rod assembly is provided on the frame, a through slot 2 is provided on the swing plate, the inner end of the pull rod assembly is hinged on the through slot 2 and can slide in the through slot 2, and the outer end of the pull rod assembly is connected to a lifting, pressing and thread-cutting swing rod.

[0019] The second through slot is hinged to the inner end of the pull rod assembly. The swing plate is driven to swing by power source one, and the pull rod assembly swings successively. The pull rod assembly slides in the second through slot, which increases the swing distance of the pull rod assembly and controls the pull rod assembly to swing back and forth. The lifting and pressing thread cutting swing arm can be swung through the swing of the pull rod assembly, which has the advantages of simple structure and easy manufacturing.

[0020] In the swing mechanism of the above-mentioned sewing machine or button sewing machine, the through slot 1 and the through slot 2 are both located on the same plane of the swing disk, the connecting rod assembly and the pull rod assembly are arranged opposite to each other, and the through slot 1 is located between the center of the swing disk and the through slot 2.

[0021] Through slot one and through slot two are located on the same plane of the swing plate, and the connecting rod assembly and the pull rod assembly are arranged opposite to each other, which can avoid the phenomenon of machine jamming and displacement, and make the connecting rod assembly and the pull rod assembly more stable when the swing plate swings and drives both to move. Through slot one is located between the center of the swing plate and through slot two. Through slot one is located in a section of the swing plate close to the center, and through slot two is located in a section of the swing plate close to the side wall. When the swing plate swings, the pull rod assembly and the connecting rod assembly are avoided from colliding, thereby improving the service life.

[0022] In the swing mechanism of the above-mentioned sewing machine or button sewing machine, the through slot 2 includes a connecting end 1 and a connecting end 2, the through slot 2 is an arc-shaped slot, the connecting end 1 and the connecting end 2 are respectively located at the two ends of the through slot 2, and the inner end of the pull rod assembly can respectively abut against the connecting end 1 and the connecting end 2.

[0023] The through slot two is an arc-shaped slot. Due to the arc shape, the angle supported by the pull rod assembly is large, which increases the stability of the swing and makes the pull rod assembly stable when moving. The connection end one and the connection end two are respectively located at the two ends of the through slot two. When the power source one drives the swing plate to swing, the inner end of the pull rod assembly moves by abutting against the side wall in the through slot two. When the inner end of the pull rod assembly moves to the connection end one through the swing of the swing plate, the side wall of the connection end one abuts against the inner end of the pull rod assembly. When the inner end of the connecting rod assembly moves to the connection end two through the swing of the swing plate, the side wall of the connection end two abuts against the inner end of the connecting rod assembly.

[0024] In the swing mechanism of the above-mentioned sewing machine or button sewing machine, the pull rod assembly includes a pull rod 1, and a pin is provided on the inner end of the pull rod 1. The side wall of the lower part of the pin is located in the through groove 2 and the pin can move in the through groove 2.

[0025] Pull rod 1 is provided with a pin, the lower sidewall of which abuts against the sidewall of through slot 2, thereby moving pull rod 1, thereby driving the lifting and pressing thread trimming swing arm to swing. When power source 1 drives the swing plate to swing counterclockwise, the pin moves from connection end 2 to connection end 1 and abuts against connection end 1, driving pull rod 1 to move outward, causing the lifting and pressing thread trimming swing arm to swing downward. Bearing 1 on connecting rod 1 moves from arc end 3 through the vertical end and arc end 2 to arc end 1. When it moves to arc end 2, connecting rod 1 moves outward, and the swing base plate returns to its original position.

[0026] In the above-mentioned swing mechanism of a sewing machine or button sewing machine, the pull rod assembly includes a pull rod 2, the inner end of the pull rod 2 is hinged to the outer end of the pull rod 1, the outer end of the pull rod 2 is hinged to a crank 2, the crank 2 is hinged to a lifting and pressing thread trimming rocker, the frame is provided with a slide groove, the inner end of the pull rod 2 can slide on the slide groove, the inner end of the pull rod 2 is provided with a through groove 3, the pull rod 2 is connected to the frame by a pin, the pin is located in the through groove 3, the frame is provided with a thread trimming mounting seat, and the middle end of the lifting and pressing thread trimming rocker is hinged to the thread trimming mounting seat.

[0027] The inner end of the pull rod two is hinged to the outer end of the pull rod one. The movement of the pull rod one can drive the movement of the pull rod two. The pull rod two is located in the slide groove and has a limiting function, which can keep the pull rod two in the same moving direction as the pull rod one. The pin passes through the through slot three to connect the pull rod two to the frame, which has a limiting function to prevent the pull rod two from moving up and down, and can control the moving distance of the pull rod two. The inner end of the crank two is hinged to the pull rod two, and the outer end of the crank two is hinged to the lifting and pressing thread trimming rocker arm. Through the movement of the pull rod two, the lifting and pressing thread trimming rocker arm is swung, thereby realizing the lifting and pressing foot and thread trimming movements. The middle end of the lifting and pressing thread trimming rocker arm is hinged to the thread trimming mounting seat, so that the lifting and pressing thread trimming rocker arm can swing stably on the frame.

[0028] Compared with the prior art, the advantages of the present invention are as follows:

[0029] 1. The inner end of the connecting rod assembly in the swing mechanism is hinged in the through slot one. The swing of the connecting rod assembly in the through slot one plays a limiting role, thereby improving the precision of the swinging base plate when swinging and increasing the precision of the button when moving on the swinging base plate.

[0030] 2. The arc segment 1 and the arc segment 2 in this swing mechanism are connected, and the two are arc-shaped. The angle supported by the connecting rod assembly is large, which improves the stability of the swing. The two ends of the straight segment are respectively connected to the arc segment 2 and the arc segment 3. When the connecting rod assembly slides to the straight segment, the angle supported by the connecting rod assembly is flat, which can make the swing more accurate.

[0031] 3. In this swing mechanism, the movement of the guide rail causes the connecting rod 2 to swing, and the linear movement of the guide rail drives the connecting rod 2 to swing, thereby increasing the stability of the transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The invention is a structural diagram of an oscillating mechanism in a sewing machine or a button sewing machine.

[0033] Figure 2 The invention is a structural diagram of an oscillating mechanism in a sewing machine or a button sewing machine.

[0034] Figure 3 The present invention is a partial structural diagram of an oscillating mechanism in a sewing machine or a button sewing machine.

[0035] Figure 4 The present invention is a schematic diagram of the structure of an oscillating plate in a sewing machine or a button sewing machine.

[0036] Figure 5 The present invention is a structural schematic diagram of a connecting rod 1 in a sewing machine or a button sewing machine when the connecting rod 1 moves to an arc section 3.

[0037] Figure 6 The present invention is a schematic diagram of the structure when the pull rod 1 in the sewing machine or button sewing machine moves to the connection end 2.

[0038] Figure 7 It is a structural diagram of embodiment 2.

[0039] Figure 8 The invention is a structural diagram of a swing mechanism in a sewing machine or a button sewing machine.

[0040] In the figure, 1. frame; 2. power source 1; 3. swing base plate; 4. swing plate; 5. connecting rod assembly; 6. through slot 1; 7. arc segment 1; 8. arc segment 2; 9. straight segment; 10. arc segment 3; 11. connecting rod 1; 12. hinge shaft; 13. bearing; 14. slider; 15. guide rail; 16. connecting rod 2; 17. crank 1; 18. power source 2; 19. swing rod; 20. pull rod assembly; 21. through slot 2; 22. lifting and pressing thread trimming swing rod; 23. connecting end 1; 24. connecting end 2; 25. pull rod 1; 26. pin; 27. pull rod 2; 28. crank 2; 29. ​​slide; 30. through slot 3; 31. pin; 32. thread trimming mounting seat. DETAILED DESCRIPTION

[0041] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0042] Example 1

[0043] like Figure 1 As shown, the sewing machine or button sewing machine includes a frame 1, on which a power source 2 and a swing base 3 are provided. The swing mechanism includes a swing plate 4 and a connecting rod assembly 5, and is characterized in that the power source 2 is connected to the swing plate 4 and can drive the swing plate 4 to swing relative to the frame 1, the swing plate 4 is provided with a through slot 6, the inner end of the connecting rod assembly 5 is hinged on the through slot 6 and can slide in the through slot 6, and the outer end of the connecting rod assembly 5 is connected to the swing base 3. The swing plate 4 is provided with a through slot 6, which is hinged to the inner end of the connecting rod assembly 5. The swing plate 4 is driven to swing by the power source 2, and the connecting rod assembly 5 swings successively. The connecting rod assembly 5 slides in the through slot 6, which increases the swing distance of the connecting rod assembly 5 and controls the connecting rod assembly 5 to swing back and forth. The connecting rod assembly 5 is connected to the swing base plate 3, which is used to place buttons. The buttons on the swing base plate 3 can be moved by the swing of the connecting rod assembly 5. The power source drives the swing plate 4 to swing, directly controlling the movement of the connecting rod assembly 5, thereby driving the buttons on the swing base plate 3 to move. The transmission is stable, and the inner end of the connecting rod assembly 5 is hinged in the through slot 6. The through slot 6 limits the swing of the connecting rod assembly 5, thereby improving the accuracy of the swing base plate 3 when swinging and increasing the accuracy of the buttons when moving on the swing base plate 3. It has the advantages of simple structure and easy manufacturing, saves costs, and has less wear.

[0044] like Figure 1 and 4As shown, the through slot 1 6 includes an arc segment 1 7, an arc segment 2 8, a straight segment 9 and an arc segment 3 10. The arc segment 1 7 is connected to the arc segment 2 8, and the two ends of the straight segment 9 are respectively connected to the arc segment 2 8 and the arc segment 3 10. The arc segment 1 7 and the arc segment 3 10 are respectively located at the two ends of the through slot 1 6, and the inner end of the connecting rod assembly 5 can respectively abut against the arc segment 1 7 and the arc segment 3 10. The arc segment 1 7 is connected to the arc segment 2 8, and the two are arc-shaped. The angle supported by the connecting rod assembly 5 is large, which improves the stability of the swing. The two ends of the straight segment 9 are respectively connected to the arc segment 2 8 and the arc segment 3 10. When the connecting rod assembly 5 slides to the straight segment 9, the angle supported by the connecting rod assembly 5 is flat, which can make the swing more accurate. When the power source 1 2 drives the swing plate 4 to swing, the inner end of the connecting rod assembly 5 moves by abutting against the side wall in the through groove 1 6. The arc segment 1 7 and the arc segment 3 10 are respectively located at the two ends of the through groove 1 6. When the inner end of the connecting rod assembly 5 moves to the arc segment 1 7 through the swing of the swing plate 4, the side wall of the arc segment 1 7 abuts against the inner end of the connecting rod assembly 5. When the inner end of the connecting rod assembly 5 moves to the arc segment 3 10 through the swing of the swing plate 4, the side wall of the arc segment 3 10 abuts against the inner end of the connecting rod assembly 5.

[0045] like Figure 2 As shown, the connecting rod assembly 5 includes a connecting rod 11, which has a hinge shaft 12 at its inner end. The bottom of the hinge shaft 12 is coaxially connected to a bearing 13 or a roller. The sidewall of the bearing 13 or roller is located in the through slot 6 and can move within the through slot 6. The connecting rod 11 has a hinge shaft 12, and the bottom of the hinge shaft 12 is coaxially connected to a bearing 13 or a roller. The sidewall of the bearing 13 or roller abuts against the sidewall of the through slot 6, causing the connecting rod 11 to move, thereby driving the swing base 3 to swing and positioning the buttons on the swing base 3 in the forward and backward directions. When the power source 12 drives the swing plate 4 to swing clockwise, the bearing 13 or roller moves from the arc segment 2 8 through the straight segment 9 to the arc segment 3 10, and the connecting rod 11 moves inward, thereby driving the swing base 3 to move the buttons.

[0046] like Figure 2 and 5As shown, a slider 14 and a guide rail 15 are provided on the frame 1. The slider 14 is located below the connecting rod 11. The slider 14 is fixed to the frame 1. The guide rail 15 can slide on the slider 14. The outer end of the connecting rod 11 is hinged to the inner end of the guide rail 15. The connecting rod assembly 5 includes a connecting rod 2 16. The outer end of the guide rail 15 is hinged to the inner end of the connecting rod 2 16. The outer end of the connecting rod 2 16 is hinged to the swing base plate 3. The outer end of the guide rail 15 is hinged on the inner end of the connecting rod 16, and the connecting rod 11 is hinged on the outer end of the connecting rod 16 to enable the guide rail 15 to move in the straight line.

[0047] like Figure 2 As shown, the crank 17 includes a crank 17, and a power source 2 18 is provided on the frame 1. The inner end of the crank 17 is connected to the power source 2 18, and the power source 2 18 can drive the crank 17 to swing relative to the frame 1. The outer end of the crank 17 is hinged to a swing rod 19, and the other end of the swing rod 19 is hinged to the swing base 3. The crank 17 and the swing base 3 are arranged opposite each other. The power source can drive the crank 17 to swing relative to the frame 1. The outer end of the crank 17 is hinged to the swing rod 19. The swing of the crank 17 drives the swing rod 19 to swing. The crank 17 and the swing base 3 are arranged opposite each other. The swing rod 19 is hinged to the swing base 3. The crank 17 swings left and right. Through the hinge of the swing rod 19, the swing base 3 also swings left and right, thereby achieving the left and right movement of the buttons on the swing base 3.

[0048] like Figure 3 As shown, a pull rod assembly 20 is provided on the frame 1, and a through slot 21 is provided on the swing plate 4. The inner end of the pull rod assembly 20 is hinged on the through slot 21 and can slide in the through slot 21. The outer end of the pull rod assembly 20 is connected to the lifting and pressing thread trimming swing rod 22. The through slot 21 is hinged to the inner end of the pull rod assembly 20. The swing plate 4 is driven to swing by the power source 1 2, and the pull rod assembly 20 swings successively. The pull rod assembly 20 slides in the through slot 21, which increases the swing distance of the pull rod assembly 20 and controls the pull rod assembly 20 to swing back and forth. The swing of the pull rod assembly 20 can swing the lifting and pressing thread trimming swing rod 22, which has the advantages of simple structure and easy manufacturing.

[0049] like Figure 1 and 2 As shown, the through slot 1 6 and the through slot 2 21 are both located on the same plane of the swing plate 4, the connecting rod assembly 5 and the pull rod assembly 20 are arranged opposite each other, and the through slot 1 6 is located between the center of the swing plate 4 and the through slot 2 21. The through slot 1 6 and the through slot 2 21 are located on the same plane of the swing plate 4, and the connecting rod assembly 5 and the pull rod assembly 20 are arranged opposite each other, which can avoid the phenomenon of machine jamming and displacement, and make the connecting rod assembly 5 and the pull rod assembly 20 more stable when they are driven by the swing plate 4 to move. The through slot 1 6 is located between the center of the swing plate 4 and the through slot 2 21. The through slot 1 6 is located in a section of the swing plate 4 close to the center, and the through slot 2 21 is located in a section of the swing plate 4 close to the side wall. When the swing plate 4 swings, the pull rod assembly 20 and the connecting rod assembly 5 are avoided from colliding, thereby improving the service life.

[0050] like Figure 4 As shown, the through slot 21 includes a connecting end 1 23 and a connecting end 24. The through slot 21 is an arc-shaped slot. The connecting end 1 23 and the connecting end 24 are respectively located at the two ends of the through slot 21. The inner end of the pull rod assembly 20 can be respectively abutted against the connecting end 1 23 and the connecting end 24. The through slot 21 is an arc-shaped slot. Due to the arc shape, the angle supported by the pull rod assembly 20 is large, which increases the stability of the swing and makes the pull rod assembly 20 stable when moving. The connection end 1 23 and the connection end 24 are respectively located at the two ends of the through slot 21. When the power source 1 2 drives the swing plate 4 to swing, the inner end of the pull rod assembly 20 moves by abutting against the side wall in the through slot 21. When the inner end of the pull rod assembly 20 moves to the connection end 1 23 through the swing of the swing plate 4, the side wall of the connection end 1 23 abuts against the inner end of the pull rod assembly 20. When the inner end of the connecting rod assembly 5 moves to the connection end 24 through the swing of the swing plate 4, the side wall of the connection end 24 abuts against the inner end of the connecting rod assembly 5.

[0051] like Figure 3 and 6 As shown, the pull rod assembly 20 includes a pull rod 25 with a pin 26 at its inner end. The lower sidewall of the pin 26 is located within the through slot 21 and is movable within the through slot 21. The lower sidewall of the pin 26 abuts against the sidewall of the through slot 21, causing the pull rod 25 to move, thereby driving the thread-lifting and pressure-trimming swing arm 22 to swing. When the power source 1 2 drives the swing plate 4 counterclockwise, the pin 26 moves from the second connection end 24 to the first connection end 23 and abuts against the first connection end 23, driving the pull rod 25 outward, causing the thread-lifting and pressure-trimming swing arm 22 to swing downward. The bearing 13 on the connecting rod 1 11 moves from the arcuate end 3, through the vertical end and the second arcuate end, to the arcuate end 1. When it reaches the second arcuate end, the connecting rod 1 11 moves outward, causing the swing base 3 to return to its original position.

[0052] like Figure 3 As shown, the pull rod assembly 20 includes a pull rod 27, the inner end of the pull rod 27 is hinged to the outer end of the pull rod 1 25, the outer end of the pull rod 27 is hinged with a crank 28, the crank 28 is hinged with a lifting and pressing thread trimming rocker 22, a slide groove 29 is provided on the frame 1, the inner end of the pull rod 27 can slide on the slide groove 29, the inner end of the pull rod 27 is provided with a through groove 30, the pull rod 27 is connected to the frame 1 through a pin 31, the pin 31 is located in the through groove 30, a thread trimming mounting seat 32 is provided on the frame 1, and the middle end of the lifting and pressing thread trimming rocker 22 is hinged to the thread trimming mounting seat 32. The inner end of the pull rod 27 is hinged to the outer end of the pull rod 1 25, and the inner end of the pull rod 27 is hinged to the outer end of the pull rod 1 25. The movement of the pull rod 1 25 can drive the pull rod 27 to move. The pull rod 27 is located in the slide 29 and has a limiting function, which can keep the pull rod 27 in the same direction of movement as the pull rod 1 25. The pin 31 passes through the through slot 30 to connect the pull rod 27 to the frame 1, which has a limiting function to prevent the pull rod 27 from It moves in the up and down directions and can control the moving distance of the pull rod 27. The inner end of the crank 28 is hinged with the pull rod 27, and the outer end of the crank 28 is hinged with the lifting and pressing thread trimming rocker 22. Through the movement of the pull rod 27, the lifting and pressing thread trimming rocker 22 is swung, thereby realizing the presser foot lifting and thread trimming movements. The middle end of the lifting and pressing thread trimming rocker 22 is hinged with the thread trimming mounting seat 32, so that the lifting and pressing thread trimming rocker 22 can swing stably on the frame 1.

[0053] Example 2

[0054] like Figure 7 As shown, this embodiment is generally the same as Embodiment 1, with the difference being that in this embodiment, through-slot 1 (6) is an arcuate slot, with an arcuate middle section, and both ends of the arcuate slot capable of respectively abutting against the inner end of the connecting rod assembly 5. Through-slot 1 (6) is an arcuate slot, with both ends and a middle section also being arcuate. When the swing plate 4 swings, the inner end of the connecting rod assembly 5 slides within through-slot 1 (6), and the inner end sidewall of the connecting rod assembly 5 abuts against one end sidewall within through-slot 1 (6). Due to the arcuate shape, the support angle is large, thereby increasing the stability of the swing.

[0055] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A swing mechanism in a sewing machine or a button sewing machine, the sewing machine or the button sewing machine comprising a frame (1), a power source (2) and a swing base (3) being provided on the frame (1), the swing mechanism comprising a swing plate (4) and a connecting rod assembly (5), characterized in that The power source (2) is connected to a swing plate (4) and can drive the swing plate (4) to swing relative to the frame (1). The swing plate (4) is provided with a through slot (6). The inner end of the connecting rod assembly (5) is hinged on the through slot (6) and can slide in the through slot (6). The outer end of the connecting rod assembly (5) is connected to the swing base plate (3).

2. The swing mechanism in a sewing machine or a button sewing machine according to claim 1, characterized in that: The through slot 1 (6) includes an arc segment 1 (7), an arc segment 2 (8), a straight segment (9) and an arc segment 3 (10); the arc segment 1 (7) is connected to the arc segment 2 (8); the two ends of the straight segment (9) are connected to the arc segment 2 (8) and the arc segment 3 (10); the arc segment 1 (7) and the arc segment 3 (10) are respectively located at the two ends of the through slot 1 (6); the inner end of the connecting rod assembly (5) can respectively abut against the arc segment 1 (7) and the arc segment 3 (10); or the through slot 1 (6) is an arc slot, the middle section of the arc slot is arc-shaped, and the two ends of the arc slot can respectively abut against the inner end of the connecting rod assembly (5).

3. The swing mechanism in a sewing machine or a button sewing machine according to claim 1, characterized in that: The connecting rod assembly (5) includes a connecting rod (11), the inner end of the connecting rod (11) is provided with a hinge shaft (12), the bottom of the hinge shaft (12) is coaxially connected to a bearing (13) or a roller, and the side wall of the bearing (13) or the roller is located in the through groove (6) and can move in the through groove (6).

4. The swing mechanism in a sewing machine or a button sewing machine according to claim 3, characterized in that: The frame (1) is provided with a slider (14) and a guide rail (15), wherein the slider (14) is located below the first connecting rod (11), the slider (14) is fixed to the frame (1), and the guide rail (15) can slide on the slider (14), the outer end of the first connecting rod (11) is hinged to the inner end of the guide rail (15), and the connecting rod assembly (5) includes a second connecting rod (16), the outer end of the guide rail (15) is hinged to the inner end of the second connecting rod (16), and the outer end of the second connecting rod (16) is hinged to the swing base plate (3).

5. The swing mechanism in a sewing machine or a button sewing machine according to claim 1, characterized in that: The invention comprises a crank 1 (17), a power source 2 (18) is provided on the frame (1), the inner end of the crank 1 (17) is connected to the power source 2 (18), and the power source 2 (18) can drive the crank 1 (17) to swing relative to the frame (1), the outer end of the crank 1 (17) is hinged with a swing rod (19), the other end of the swing rod (19) is hinged on the swing base plate (3), and the crank 1 (17) and the swing base plate (3) are arranged opposite to each other.

6. The swing mechanism in a sewing machine or a button sewing machine according to claim 1, characterized in that: The frame (1) is provided with a pull rod assembly (20), the swing plate (4) is provided with a second through slot (21), the inner end of the pull rod assembly (20) is hinged on the second through slot (21) and can slide in the second through slot (21), and the outer end of the pull rod assembly (20) is connected to a lifting and pressing thread cutting rocker (22).

7. The swing mechanism in a sewing machine or a button sewing machine according to claim 6, characterized in that: The through slot 1 (6) and the through slot 2 (21) are both located on the same plane of the swing plate (4), the connecting rod assembly (5) and the pull rod assembly (20) are arranged opposite to each other, and the through slot 1 (6) is located between the center of the swing plate (4) and the through slot 2 (21).

8. The swing mechanism in a sewing machine or a button sewing machine according to claim 7, characterized in that: The second through slot (21) includes a first connecting end (23) and a second connecting end (24). The second through slot (21) is an arc-shaped slot. The first connecting end (23) and the second connecting end (24) are respectively located at the two ends of the second through slot (21). The inner end of the pull rod assembly (20) can respectively abut against the first connecting end (23) and the second connecting end (24).

9. The swing mechanism in a sewing machine or a button sewing machine according to claim 8, characterized in that: The pull rod assembly (20) includes a pull rod (25) having a pin (26) on the inner end of the pull rod (25). The side wall of the lower part of the pin (26) is located in the through slot (21) and the pin (26) can move in the through slot (21).

10. The swing mechanism in a sewing machine or a button sewing machine according to claim 9, characterized in that: The pull rod assembly (20) includes a pull rod 2 (27), the inner end of the pull rod 2 (27) is hinged to the outer end of the pull rod 1 (25), the outer end of the pull rod 2 (27) is hinged to a crank 2 (28), the crank 2 (28) is hinged to a lifting and pressing thread trimming rocker (22), the frame (1) is provided with a slide groove (29), the inner end of the pull rod 2 (27) can slide on the slide groove (29), the inner end of the pull rod 2 (27) is provided with a through groove 3 (30), the pull rod 2 (27) is connected to the frame (1) through a pin (31), the pin (31) is located in the through groove 3 (30), the frame (1) is provided with a thread trimming mounting seat (32), and the middle end of the lifting and pressing thread trimming rocker (22) is hinged to the thread trimming mounting seat (32).

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