Transmission mechanism in sewing machine or button sewing machine and sewing machine or button sewing machine

Abstract

The invention provides a transmission mechanism in a sewing machine or a button sewing machine and the sewing machine or the button sewing machine, and belongs to the technical field of sewing machines. The button sewing machine solves the technical problem of how to enable one power source to move buttons on the button sewing machine, lift presser feet, trim threads and the like. According to the transmission mechanism in the sewing machine or the button sewing machine, a first power source is connected with a swing disc and can drive the swing disc to swing relative to a rack, a first through groove and a second through groove are formed in the swing disc, the inner end of a 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 a swing bottom plate; the inner end of the pull rod assembly is hinged to the second through groove and can slide in the second through groove, and the outer end of the pull rod assembly is connected with a lifting and pressing trimming swing rod. The first power source can drive the pull rod assembly and the connecting rod assembly to swing, the swing of the connecting rod assembly can move buttons on the swing bottom plate, and the swing of the pull rod assembly can swing the lifting and pressing thread trimming swing rod.

Description

Technical Field

[0001] The invention belongs to the technical field of sewing machine equipment, and relates to a transmission mechanism in a sewing machine or a button sewing machine and the sewing machine or the button sewing machine. Background Art

[0002] When the button sewing machine is in motion, a mechanism on the button sewing machine is usually controlled by a motor or a cylinder to operate. When the buttons are moved and positioned, two motors are usually required to move the x-axis and y-axis of the platform on which the buttons are placed. Patent application number 202322666138.2 discloses a step-by-step presser foot lifting and thread trimming mechanism of a button sewing machine, in which the presser foot lifting crank is directly connected to the presser foot lever through 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-axis stepper motor, a Y-axis feeding lever, a Y-axis eccentric wheel, a Y-axis feeding connecting rod, a feeding slide plate, an X-axis stepper motor, an X-axis eccentric wheel, an X-axis feeding lever, and an X-axis feeding connecting rod. Through two stepper motors and two sets of slide rod feeding mechanisms, the feeding action of the feeding slide plate in two directions can be realized.

[0004] The button sewing machine in the patent document with the above application number 202010827410.9 has two stepper motors and two sets of slide rod feeding mechanisms, which can improve work efficiency, but there are still shortcomings. The above motors can only move the buttons on the button sewing machine platform. Summary of the invention

[0005] In view of the above problems existing in the prior art, the present invention provides a transmission mechanism in a sewing machine or a button sewing machine. The technical problem to be solved by the present invention is how to enable a power source to move buttons on the button sewing machine, lift the presser foot and cut the thread.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A transmission mechanism in a sewing machine or a button sewing machine, the sewing machine or the button sewing machine comprises a frame, the frame is provided with a power source 1, a swinging base plate and a lifting and pressing thread-cutting rocker arm, the transmission mechanism comprises a swinging plate, a connecting rod assembly and a pull rod assembly, and is characterized in that the power source 1 is connected to the swinging plate and can drive the swinging plate to swing relative to the frame, the swinging plate is respectively provided with a through slot 1 and a through slot 2, the inner end of the connecting rod assembly is hinged on the through slot 1 and can slide in the through slot 1, the outer end of the connecting rod assembly is connected to the swinging base 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 the lifting and pressing thread-cutting rocker arm.

[0008] The working principle is as follows: a through slot one and a through slot two are provided on the swinging plate, and the through slot one is hinged to the inner end of the connecting rod assembly, and the swinging plate is driven to swing by power source one, and the connecting rod assembly swings successively, and the connecting rod assembly slides in the through slot one, which increases the swing distance of the connecting rod assembly and controls the connecting rod assembly to swing back and forth, and the through slot two is hinged to the inner end of the pull rod assembly, and the swinging plate is driven to swing by power source one, and the pull rod assembly swings successively, and the pull rod assembly slides in the through slot two, which increases the swing distance of the pull rod assembly and controls the pull rod assembly to swing back and forth, and a power source one can be used to drive the pull rod assembly and the connecting rod assembly to swing, and the pull rod assembly is connected to a lifting and pressing thread trimming swing rod, and the connecting rod assembly is connected to a swinging base plate, and the swinging base plate is used to place buttons, and the buttons on the swinging base plate can be moved by the swing of the connecting rod assembly, and the lifting and pressing thread trimming swing rod can be swung by the swing on the pull rod assembly, and the movement of the buttons and the lifting and pressing foot thread trimming are controlled by a power source one, which has the advantages of simple structure and easy manufacturing, saves costs, and has less wear.

[0009] In the transmission mechanism of the above-mentioned sewing machine or button sewing machine, the through slot one and the through slot two are both located on the same plane of the swing plate, the connecting rod assembly and the pull rod assembly are arranged opposite to each other, and the through slot one is located between the center of the swing plate and the through slot two.

[0010] Through slot one and through slot two are located on the same plane of the swinging disk, 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 swinging disk drives both to move. Through slot one is located between the center of the swinging disk and through slot two, through slot one is located in a section of the swinging disk close to the center, and through slot two is located in a section of the swinging disk close to the side wall. When the swinging disk swings, the pull rod assembly and the connecting rod assembly are avoided from colliding, thereby improving the service life.

[0011] In the transmission 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 located between the center of the swing plate and the through slot two, the arc segment one is connected to the arc segment two, 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-shaped slot is arc-shaped, and the two ends of the arc-shaped slot can respectively abut against the inner end of the connecting rod assembly.

[0012] Arc segment 1 is located between the center of the swing plate and through slot 2, which can prevent the tie rod assembly from colliding with the connecting rod assembly when the swing plate swings. Arc segment 1 is connected to arc segment 2, 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 2 and 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. When the power source 1 drives the swing plate to swing, the inner end of the connecting rod assembly moves by abutting against the side wall in through slot 1. Arc segment 1 and arc segment 3 are respectively located at the two ends of through slot 1. When the inner end of the connecting rod assembly moves to arc segment 1 through the swing of the swing plate, the side wall of arc segment 1 abuts against the inner end of the connecting rod assembly. When the inner end of the connecting rod assembly moves to arc segment 3 through the swing of the swing plate, the side wall of arc segment 3 abuts against the inner end of the connecting rod assembly.

[0013] As another solution, the through groove is an arc-shaped groove, and both ends of the arc-shaped groove are arc-shaped, and the middle end is also arc-shaped. When the swing plate swings, when the inner end of the connecting rod assembly slides in the through groove, the inner end side wall of the connecting rod assembly abuts against one end side wall in the through groove. Due to the arc shape, the supported angle is large, which increases the stability of the swing.

[0014] In the transmission 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 be respectively abutted against the connecting end 1 and the connecting end 2.

[0015] 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.

[0016] In the transmission mechanism of the above-mentioned sewing machine or button sewing machine, the connecting rod assembly includes a connecting rod one, the inner end of the connecting rod one has a hinge shaft, the bottom of the hinge shaft is coaxially connected with a bearing or a roller, and the side wall of the bearing or roller is located in a through groove one and can move in the through groove one.

[0017] Connecting rod 1 is provided with an articulated shaft, and a bearing or roller is coaxially connected to the bottom of the articulated shaft. The side wall of the bearing or roller abuts against the side wall of the through groove 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 rear directions. When power source 1 drives the swing plate to swing clockwise, the bearing or roller moves from arc segment 2 to arc segment 3 through the straight segment, and connecting rod 1 moves toward the inner end successively, thereby driving the swing base plate to realize the movement of the button, and the inner end of the pull rod assembly moves from connection end 1 to connection end 2.

[0018] In the transmission mechanism of the above-mentioned 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 one, the slider is fixed on the frame, the guide rail can slide on the slider, the outer end of the connecting rod one is hinged to the inner end of the guide rail, the connecting rod assembly includes a connecting rod two, the outer end of the guide rail is hinged to the inner end of the connecting rod two, and the outer end of the connecting rod two is hinged to the swing base plate.

[0019] The slider is fixed on the frame, and the guide rail can slide on the slider. The inner end of the guide rail is connected to the outer end of the connecting rod one. The power source drives the swing plate to swing, so that the connecting rod one moves and drives the guide rail to move. The guide rail is located on the slider to make the sliding smoother, improve the efficiency, 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 outer end of the connecting rod two is hinged on the swing base plate. The swing of the connecting rod two can drive the swing base plate to swing, thereby realizing the movement of the button.

[0020] The transmission 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 on the swing base plate, and the crank 1 is arranged opposite to the swing base plate.

[0021] The power source can drive crank 1 to swing relative to the frame. A swing rod is hinged at the outer end of crank 1. 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.

[0022] In the transmission 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.

[0023] The pull rod 1 is provided with a pin shaft, and the lower side wall of the pin shaft abuts against the side wall of the through slot 2 to move the pull rod 1, thereby driving the lifting and pressing thread trimming swing arm to swing. When the power source 1 drives the swing plate to swing counterclockwise, the pin shaft moves from the connection end 2 to the connection end 1 and abuts against the connection end 1, driving the pull rod 1 to move toward the outer end, causing the lifting and pressing thread trimming swing arm to swing downward, and the bearing 1 on the connecting rod 1 moves from the arc end 3 through the vertical end and the arc end 2 to the arc end 1. When moving to the arc end 2, the connecting rod 1 moves toward the outer end, and the swinging bottom plate returns to its original position.

[0024] In the transmission mechanism of the above-mentioned 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 with a crank 3, the crank 3 is hinged with a lifting and pressing thread trimming rocker arm, 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 through 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 arm is hinged to the thread trimming mounting seat.

[0025] The inner end of pull rod two is hinged to the outer end of pull rod one, and the inner end of pull rod two is hinged to the outer end of pull rod one. The movement of pull rod one can drive pull rod two to move. Pull rod two is located in the slide groove and has a limiting function, which can keep pull rod two in the same moving direction as pull rod one. The pin passes through the through groove three to connect pull rod two with the frame, which has a limiting function to prevent pull rod two from moving up and down, and can control the moving distance of pull rod two. The inner end of crank three is hinged to pull rod two, and the outer end of crank three is hinged to a lifting and pressing thread trimming rocker arm. Through the movement of 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.

[0026] Another object of the present invention is to provide a sewing machine or a button sewing machine, wherein the sewing machine or the button sewing machine comprises any one of the above-mentioned transmission mechanisms.

[0027] Compared with the prior art, the advantages of the present invention are as follows:

[0028] 1. The transmission mechanism can drive the pull rod assembly and the connecting rod assembly to swing through a power source, and the buttons on the swinging base plate can be moved through the swing of the connecting rod assembly. The lifting, pressing and thread cutting swing rod can be swung through the swing of the pull rod assembly. The movement of the buttons and the lifting and pressing foot thread cutting are controlled by a power source. It has the advantages of simple structure, easy manufacturing, cost saving and less wear.

[0029] 2. The through slots 1 and 2 in the transmission mechanism are located on the same plane of the swing plate, and the connecting rod assembly and the pull rod assembly are arranged relative to each other, which can avoid the machine from getting stuck or moving, and make the connecting rod assembly and the pull rod assembly more stable when they are driven by the swing plate to move.

[0030] 3. The arc segment 1 in the transmission mechanism is connected to the arc segment 2, and the two are arc-shaped. The angle supported by the connecting rod assembly is large, which improves the stability of the swing. 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The invention is a structural schematic diagram of a transmission mechanism in the sewing machine or button sewing machine.

[0032] Figure 2 The invention is a structural schematic diagram of a transmission mechanism in the sewing machine or button sewing machine.

[0033] Figure 3 It is a partial structural schematic diagram of a transmission mechanism in the sewing machine or button sewing machine.

[0034] Figure 4 The invention is a structural schematic diagram of a swing plate in the sewing machine or button sewing machine.

[0035] Figure 5 The invention is a structural schematic diagram when the connecting rod 1 in the sewing machine or button sewing machine moves to the arc section 3.

[0036] Figure 6 The invention is a structural schematic diagram when a pull rod 1 in the sewing machine or button sewing machine moves to a connecting end 2.

[0037] Figure 7 It is a structural diagram of embodiment 2.

[0038] Figure 8 The invention is a structural schematic diagram of a transmission mechanism in the sewing machine or button sewing machine.

[0039] In the figure, 1, frame; 2, power source 1; 3, swing base plate; 4, lifting and pressing thread trimming swing rod; 5, swing plate; 6, connecting rod assembly; 7, pull rod assembly; 8, through slot 1; 9, through slot 2; 10, arc segment 1; 11, arc segment 2; 12, straight segment; 13, arc segment 3; 14, connecting end 1; 15, connecting end 2; 16, connecting rod 1; 17, hinge shaft; 18, bearing; 19, slider; 20, guide rail; 21, connecting rod 2; 22, crank 1; 23, power source 2; 24, swing rod; 25, pin shaft; 26, pull rod 2; 27, crank 3; 28, slide groove; 29, through slot 3; 30, pin; 31, thread trimming mounting seat; 32, pull rod 1. DETAILED DESCRIPTION

[0040] 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.

[0041] Embodiment 1

[0042] like Figure 1 and 8 As shown, the sewing machine or button sewing machine includes a frame 1, on which is provided a power source 2, a swing base plate 3 and a lifting and pressing thread-cutting rocker arm 4, a transmission mechanism includes a swing plate 5, a connecting rod assembly 6 and a pull rod assembly 7, the power source 2 is connected to the swing plate 5 and can drive the swing plate 5 to swing relative to the frame 1, the swing plate 5 is respectively provided with a through groove 1 8 and a through groove 2 9, the inner end of the connecting rod assembly 6 is hinged on the through groove 1 8 and can slide in the through groove 1 8, the outer end of the connecting rod assembly 6 is connected to the swing base plate 3, the inner end of the pull rod assembly 7 is hinged on the through groove 2 9 and can slide in the through groove 2 9, and the outer end of the pull rod assembly 7 is connected to the lifting and pressing thread-cutting rocker arm 4. The swing plate 5 is provided with a through slot 1 8 and a through slot 2 9, and the through slot 1 8 is hinged to the inner end of the connecting rod assembly 6. The swing plate 5 is driven to swing by the power source 1 2, and the connecting rod assembly 6 swings successively. The connecting rod assembly 6 slides in the through slot 1 8, which increases the swing distance of the connecting rod assembly 6, and controls the connecting rod assembly 6 to swing forward and backward. The through slot 2 9 is hinged to the inner end of the pull rod assembly 7, and the swing plate 5 is driven to swing by the power source 2, and the pull rod assembly 7 swings successively. The pull rod assembly 7 slides in the through slot 2 9, which increases the swing distance of the pull rod assembly 7, and controls the pull rod assembly 7. It swings back and forth, and a power source 2 can drive the pull rod assembly 7 and the connecting rod assembly 6 to swing. The pull rod assembly 7 is connected to the lifting and pressing thread trimming rocker 4, and the connecting rod assembly 6 is connected to the swinging base plate 3. The swinging base plate 3 is used to place buttons. The buttons on the swinging base plate 3 can be moved by the swinging of the connecting rod assembly 6, and the lifting and pressing thread trimming rocker 4 can be swung by the swinging of the pull rod assembly 7. The movement of the buttons and the lifting and pressing foot thread trimming are controlled by a power source 2. It has the advantages of simple structure and easy manufacturing, and it saves costs and has less wear.

[0043] like Figure 1As shown, the through slot 1 8 and the through slot 2 9 are both located on the same plane of the swing plate 5, the connecting rod assembly 6 and the pull rod assembly 7 are arranged oppositely, and the through slot 1 8 is located between the center of the swing plate 5 and the through slot 2 9. The through slot 1 8 and the through slot 2 9 are located on the same plane of the swing plate 5, and the connecting rod assembly 6 and the pull rod assembly 7 are arranged oppositely, which can avoid the phenomenon of machine jamming and displacement, and make the connecting rod assembly 6 and the pull rod assembly 7 more stable when the swing plate 5 swings and drives both to move. The through slot 1 8 is located between the center of the swing plate 5 and the through slot 2 9, the through slot 1 8 is located in a section of the swing plate 5 close to the center, and the through slot 2 9 is located in a section of the swing plate 5 close to the side wall. When the swing plate 5 swings, the pull rod assembly 7 and the connecting rod assembly 6 are avoided from colliding, thereby improving the service life.

[0044] like Figure 1 and 4 As shown, the through slot 18 includes an arc segment 10, an arc segment 2 11, a straight segment 12 and an arc segment 3 13. The arc segment 10 is located between the center of the swing plate 5 and the through slot 2 9. The arc segment 10 is connected to the arc segment 2 11. The two ends of the straight segment 12 are respectively connected to the arc segment 2 11 and the arc segment 3 13. The arc segment 10 and the arc segment 3 13 are respectively located at the two ends of the through slot 18. The inner end of the connecting rod assembly 6 can be respectively abutted against the arc segment 10 and the arc segment 3 13. The arc segment 1 10 is located between the center of the swing plate 5 and the through slot 2 9, which can prevent the tie rod assembly 7 from colliding with the connecting rod assembly 6 when the swing plate 5 swings. The arc segment 10 is connected to the arc segment 2 11, and the two are arc-shaped. The angle supported by the connecting rod assembly 6 is large, which improves the stability of the swing. The two ends of the straight segment 12 are respectively connected to the arc segment 2 11 and the arc segment 3 13. When the connecting rod assembly 6 slides to the straight segment 12, the angle supported by the connecting rod assembly 6 is flat, which can make the swing more accurate. When the power When source 2 drives the swing plate 5 to swing, the inner end of the connecting rod assembly 6 moves by abutting against the side wall in the through groove 8. The arc segment 10 and the arc segment 3 13 are respectively located at the two ends of the through groove 8. When the inner end of the connecting rod assembly 6 moves to the arc segment 10 through the swing of the swing plate 5, the side wall of the arc segment 10 abuts against the inner end of the connecting rod assembly 6. When the inner end of the connecting rod assembly 6 moves to the arc segment 3 13 through the swing of the swing plate 5, the side wall of the arc segment 3 13 abuts against the inner end of the connecting rod assembly 6.

[0045] like Figure 1 and 4As shown, the through slot 2 9 includes a connecting end 14 and a connecting end 15 . The through slot 2 9 is an arc-shaped slot. The connecting end 14 and the connecting end 15 are respectively located at the two ends of the through slot 2 9 . The inner end of the pull rod assembly 7 can be respectively abutted against the connecting end 14 and the connecting end 15 . The through slot 29 is an arc-shaped slot. Due to the arc shape, the angle supported by the pull rod assembly 7 is large, which increases the stability of the swing and makes the pull rod assembly 7 stable when moving. The connecting end 14 and the connecting end 2 15 are respectively located at the two ends of the through slot 29. When the power source 12 drives the swing plate 5 to swing, the inner end of the pull rod assembly 7 moves by abutting against the side wall in the through slot 29. When the inner end of the pull rod assembly 7 moves to the connecting end 14 through the swing of the swing plate 5, the side wall of the connecting end 14 abuts against the inner end of the pull rod assembly 7. When the inner end of the connecting rod assembly 6 moves to the connecting end 2 15 through the swing of the swing plate 5, the side wall of the connecting end 2 15 abuts against the inner end of the connecting rod assembly 6.

[0046] like Figure 2 and 5 As shown, the connecting rod assembly 6 includes a connecting rod 16, and a hinge shaft 17 is provided on the inner end of the connecting rod 16. A bearing 18 or a roller is coaxially connected to the bottom of the hinge shaft 17. The side wall of the bearing 18 or the roller is located in the through groove 8 and can move in the through groove 8. A hinge shaft 17 is provided on the connecting rod 16, and a bearing 18 or a roller is coaxially connected to the bottom of the hinge shaft 17. The side wall of the bearing 18 or the roller abuts against the side wall of the through groove 8 to move the connecting rod 16, thereby driving the swing base plate 3 to swing, and moving and positioning the buttons on the swing base plate 3 in the front and rear directions. When the power source 12 drives the swing plate 5 to swing clockwise, the bearing 18 or the roller moves from the arc segment 2 11 to the straight segment 12 to the arc segment 3 13, and the connecting rod 16 moves toward the inner end successively, thereby driving the swing base plate 3 to realize the movement of the button, and the inner end of the pull rod assembly 7 moves from the connecting end 14 to the connecting end 2 15.

[0047] like Figure 2As shown, a slider 19 and a guide rail 20 are provided on the frame 1. The slider 19 is located below the connecting rod 16. The slider 19 is fixed on the frame 1. The guide rail 20 can slide on the slider 19. The outer end of the connecting rod 16 is hinged to the inner end of the guide rail 20. The connecting rod assembly 6 includes a connecting rod 21. The outer end of the guide rail 20 is hinged to the inner end of the connecting rod 21. The outer end of the connecting rod 21 is hinged to the swing base plate 3. The slider 19 is fixed on the frame 1, and the guide rail 20 can slide on the slider 19. The inner end of the guide rail 20 is connected to the outer end of the connecting rod 16. The power source drives the swing plate 5 to swing, so that the connecting rod 16 moves and drives the guide rail 20 to move. The guide rail 20 is located on the slider 19 to make the sliding smoother, improve the efficiency, and increase the service life. The outer end of the guide rail 20 is hinged to the inner end of the connecting rod 21, and the connecting rod 21 is swung by the movement of the guide rail 20. The outer end of the connecting rod 21 is hinged on the swing base plate 3. The swing of the connecting rod 21 can drive the swing base plate 3 to swing, thereby realizing the movement of the button.

[0048] like Figure 2 , including a crank 1 22, a power source 23 is provided on the frame 1, the inner end of the crank 1 22 is connected to the power source 23 and the power source 23 can drive the crank 1 22 to swing relative to the frame 1, the outer end of the crank 1 22 is hinged with a swing rod 24, the other end of the swing rod 24 is hinged on the swing bottom plate 3, and the crank 1 22 is arranged opposite to the swing bottom plate 3. The power source can drive the crank 1 22 to swing relative to the frame 1, the outer end of the crank 1 22 is hinged with the swing rod 24, the swing of the crank 1 22 drives the swing rod 24 to swing, the crank 1 22 is arranged opposite to the swing bottom plate 3, the swing rod 24 is hinged to the swing bottom plate 3, the crank 1 22 swings left and right, and the swing bottom plate 3 is also swung left and right through the hinge of the swing rod 24, so as to realize the left and right movement of the buttons on the swing bottom plate 3.

[0049] like Figure 3 and 6 As shown, the pull rod assembly 7 includes a pull rod 1 32, and a pin 25 is provided on the inner end of the pull rod 1 32. The side wall of the lower part of the pin 25 is located in the through groove 2 9 and the pin 25 can move in the through groove 2 9. The pull rod 1 32 has a pin 25, and the lower side wall of the pin 25 abuts against the side wall of the through groove 2 9 to move the pull rod 1 32, thereby driving the lifting and pressing thread trimming swing rod 4 to swing. When the power source 1 2 drives the swing plate 5 to swing counterclockwise, the pin 25 moves from the connecting end 2 15 to the connecting end 14 and abuts against the connecting end 14, driving the pull rod 1 32 to move toward the outer end, so that the lifting and pressing thread trimming swing rod 4 swings downward, and the bearing 18 on the connecting rod 1 16 moves from the arc end 3 through the vertical end and the arc end 2 to the arc end 1. When moving to the arc end 2, the connecting rod 1 16 moves toward the outer end, and the swing bottom plate 3 returns to its original position.

[0050] like Figure 3 and 6 As shown, the pull rod assembly 7 includes a pull rod 26, the inner end of the pull rod 26 is hinged to the outer end of the pull rod 1 32, the outer end of the pull rod 26 is hinged with a crank 3 27, the crank 3 27 is hinged with a lifting and pressing thread trimming rocker 4, a slide groove 28 is provided on the frame 1, the inner end of the pull rod 26 can slide on the slide groove 28, a through groove 3 29 is provided at the inner end of the pull rod 26, the pull rod 26 is connected to the frame 1 through a pin 30, the pin 30 is located in the through groove 3 29, a thread trimming mounting seat 31 is provided on the frame 1, and the middle end of the lifting and pressing thread trimming rocker 4 is hinged to the thread trimming mounting seat 31. The inner end of the second pull rod 26 is hinged to the outer end of the first pull rod 32, and the inner end of the second pull rod 26 is hinged to the outer end of the first pull rod 32. The movement of the first pull rod 32 can drive the second pull rod 26 to move. The second pull rod 26 is located in the slide groove 28, which has a limiting function, and can keep the second pull rod 26 in the same moving direction as the first pull rod 32. The pin 30 passes through the through groove 3 29 to connect the second pull rod 26 with the frame 1, which has a limiting function to prevent the second pull rod from 26 can move in the up and down directions, and can control the moving distance of the pull rod 26, the inner end of the crank three 27 is hinged with the pull rod 26, and the outer end of the crank three 27 is hinged with the lifting and pressing thread trimming rocker 4. Through the movement of the pull rod 26, the lifting and pressing thread trimming rocker 4 is swung, thereby realizing the lifting and pressing foot and thread trimming movements, the middle end of the lifting and pressing thread trimming rocker 4 is hinged with the thread trimming mounting seat 31, so that the lifting and pressing thread trimming rocker 4 can stably swing on the frame 1.

[0051] Embodiment 2

[0052] like Figure 7 As shown, the general content of this embodiment is the same as that of the embodiment 1, except that: in this embodiment, the through slot 8 is an arc-shaped slot, the middle section of the arc-shaped slot is arc-shaped, and the two ends of the arc-shaped slot can respectively abut against the inner end of the connecting rod assembly 6. The through slot 8 is an arc-shaped slot, the two ends of the arc-shaped slot are arc-shaped, and the middle end is also arc-shaped. When the swing plate 5 swings, when the inner end of the connecting rod assembly 6 slides in the through slot 8, the inner end side wall of the connecting rod assembly 6 abuts against one end side wall in the through slot 8. Due to the arc shape, the supported angle is large, which increases the stability of the swing.

[0053] Embodiment 3

[0054] The general contents of this embodiment are the same as those of Embodiment 1, except that: a sewing machine or a button sewing machine is provided, and the sewing machine or the button sewing machine includes any one of the transmission mechanisms in Embodiment 1.

[0055] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A transmission mechanism in a sewing machine or a button sewing machine, the sewing machine or the button sewing machine comprising a frame (1), the frame (1) being provided with a power source (2), a swinging bottom plate (3) and a lifting, pressing and cutting thread swinging rod (4), the transmission mechanism comprising a swinging plate (5), a connecting rod assembly (6) and a pulling rod assembly (7), characterized in that The power source (2) is connected to a swing plate (5) and can drive the swing plate (5) to swing relative to the frame (1). The swing plate (5) is provided with a through slot (8) and a through slot (9). The inner end of the connecting rod assembly (6) is hinged on the through slot (8) and can slide in the through slot (8). The outer end of the connecting rod assembly (6) is connected to the swing base plate (3). The inner end of the pull rod assembly (7) is hinged on the through slot (9) and can slide in the through slot (9). The outer end of the pull rod assembly (7) is connected to a lifting and pressing thread cutting swing rod (4).

2. The transmission mechanism in a sewing machine or a button sewing machine according to claim 1, characterized in that: The through slot one (8) and the through slot two (9) are both located on the same plane of the swing plate (5), the connecting rod assembly (6) and the pull rod assembly (7) are arranged opposite to each other, and the through slot one (8) is located between the center of the swing plate (5) and the through slot two (9).

3. A transmission mechanism in a sewing machine or a button sewing machine according to claim 1 or 2, characterized in that: The through slot one (8) comprises an arc segment one (10), an arc segment two (11), a straight segment (12) and an arc segment three (13); the arc segment one (10) is located between the center of the swing plate (5) and the through slot two (9); the arc segment one (10) is connected to the arc segment two (11); the two ends of the straight segment (12) are respectively connected to the arc segment two (11) and the arc segment three (13); the arc segment one (10) and the arc segment three (13) are respectively located at the two ends of the through slot one (8); the inner end of the connecting rod assembly (6) can respectively abut against the arc segment one (10) and the arc segment three (13); or the through slot one (8) 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 (6).

4. A transmission mechanism in a sewing machine or a button sewing machine according to claim 1 or 2, characterized in that: The through slot 2 (9) comprises a connecting end 1 (14) and a connecting end 2 (15); the through slot 2 (9) is an arc-shaped slot; the connecting end 1 (14) and the connecting end 2 (15) are respectively located at the two ends of the through slot 2 (9); and the inner end of the pull rod assembly (7) can respectively abut against the connecting end 1 (14) and the connecting end 2 (15).

5. The transmission mechanism in a sewing machine or a button sewing machine according to claim 1, characterized in that: The connecting rod assembly (6) comprises a connecting rod (16), the inner end of which is provided with a hinge shaft (17), the bottom of which is coaxially connected with a bearing (18) or a roller, the side wall of which is located in a through groove (8) and is capable of moving in the through groove (8).

6. The transmission mechanism in a sewing machine or a button sewing machine according to claim 5, characterized in that: The frame (1) is provided with a slider (19) and a guide rail (20), wherein the slider (19) is located below the first connecting rod (16), the slider (19) is fixed on the frame (1), the guide rail (20) can slide on the slider (19), the outer end of the first connecting rod (16) is hinged to the inner end of the guide rail (20), the connecting rod assembly (6) includes a second connecting rod (21), the outer end of the guide rail (20) is hinged to the inner end of the second connecting rod (21), and the outer end of the second connecting rod (21) is hinged to the swing base plate (3).

7. The transmission mechanism in a sewing machine or a button sewing machine according to claim 1, characterized in that: The invention comprises a crank one (22), a power source two (23) is arranged on the frame (1), the inner end of the crank one (22) is connected to the power source two (23), and the power source two (23) can drive the crank one (22) to swing relative to the frame (1), the outer end of the crank one (22) is hinged with a swing rod (24), the other end of the swing rod (24) is hinged on the swing base plate (3), and the crank one (22) and the swing base plate (3) are arranged opposite to each other.

8. The transmission mechanism in a sewing machine or a button sewing machine according to claim 1, characterized in that: The pull rod assembly (7) comprises a pull rod 1 (32), the inner end of which is provided with a pin shaft (25), the side wall of the lower part of the pin shaft (25) is located in the through groove 2 (9) and the pin shaft (25) can move in the through groove 2 (9).

9. The transmission mechanism in a sewing machine or a button sewing machine according to claim 8, characterized in that: The pull rod assembly (7) includes a pull rod 2 (26), the inner end of the pull rod 2 (26) is hinged to the outer end of the pull rod 1 (32), the outer end of the pull rod 2 (26) is hinged with a crank 3 (27), the crank 3 (27) is hinged with a lifting and pressing thread trimming rocker arm (4), the frame (1) is provided with a slide groove (28), the inner end of the pull rod 2 (26) can slide on the slide groove (28), the inner end of the pull rod 2 (26) is provided with a through groove 3 (29), the pull rod 2 (26) is connected to the frame through a pin (30), the pin (30) is located in the through groove 3 (29), the frame (1) is provided with a thread trimming mounting seat (31), and the middle end of the lifting and pressing thread trimming rocker arm (4) is hinged to the thread trimming mounting seat (31).

10. A sewing machine or a button sewing machine, characterized in that: The sewing machine or button sewing machine comprises the transmission mechanism according to any one of claims 1-9.

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