Driving structure for button sewing machine twisting clamping and thread trimming device

Abstract

The utility model relates to a driving structure for a button sewing machine twisting clamp and a thread trimming device, which belongs to the technical field of button sewing machines, and comprises a rack, a driving source, a driving wheel, a twisting clamp and a movable cutter assembly, the driving source is fixed on one side of the rack, the driving wheel is connected with the driving source, the driving wheel is connected with the twisting clamp through a presser foot lifting assembly and a guide rail assembly, and the movable cutter assembly is connected with the twisting clamp. The presser foot lifting assembly is arranged on the twisting clamp and can respectively control the twisting clamp to move back and forth and swing up and down, the presser foot lifting assembly is connected with the movable cutter assembly through the connecting rod assembly, and when the twisting clamp swings upwards, the movable cutter assembly swings to complete thread trimming action. According to the driving structure for the button sewing machine twisting clamp and the thread trimming device, a lifting presser foot, the thread trimming device and the button clamp can be driven to move front and back through a motor.

Description

Technical Field

[0001] This utility model belongs to the field of button attaching machine technology, and specifically refers to a drive structure for the twisting clamp and thread cutting device of a button attaching machine. Background Technology

[0002] Currently, the sewing machine market is undergoing a reshuffle, and product differentiation can significantly improve product competitiveness. Button attaching machines are a type of machine with a large market share. Button attaching machines are usually equipped with a presser foot lifting mechanism and a thread cutting mechanism. Some models also have a twist clamp mechanism. The presser foot lifting and thread cutting mechanisms are usually driven by motors or electromagnets, while the forward, backward, left, and right movement of the twist clamp requires two additional motors to drive it. The overall structure is relatively complex and the overall size is relatively large.

[0003] For example, a utility model patent with application number 202322246525.0 published in a domestic database, entitled "A Drive Structure for a Clamping Device of a Button-Attaching Machine," includes a frame. A clamping device is slidably mounted on the frame in all directions. A drive motor is located at the rear end of the frame to control the forward and backward movement of the clamping device. A drive motor is located on one side of the rear end of the frame to control the left and right movement of the clamping device. A swing rod is mounted on the motor shaft of the second drive motor. One end of the swing rod is movably connected to a connecting rod. The connecting rod is movably connected to the clamping device. The second drive motor drives the swing rod to swing, and the swing rod drives the clamping device to move left and right through the connecting rod. Therefore, it is necessary to design a drive structure that drives the lifting foot and the wire cutting mechanism and drives the clamping device to move forward and backward using a single motor. Utility Model Content

[0004] The purpose of this invention is to provide a reasonably structured drive structure for the twisting clamp and wire cutting device of a button-attaching machine, which can be driven by a single motor to move the lifting presser foot, the wire cutting device, and the button clamp back and forth.

[0005] The purpose of this utility model is achieved as follows:

[0006] A drive structure for a twist clamp and wire cutting device of a button attaching machine includes a frame, a drive source, a drive wheel, a twist clamp, and a moving blade assembly. The drive source is fixed to one side of the frame, and the drive wheel is connected to the drive source. The drive wheel is connected to the twist clamp through a lifting foot assembly and a guide rail assembly, and can control the twist clamp to move back and forth and swing up and down, respectively. The lifting foot assembly is connected to the moving blade assembly through a connecting rod assembly. When the twist clamp swings upward, the moving blade assembly swings to complete the wire cutting action.

[0007] In the aforementioned drive structure for the twist clamp and wire cutting device of the button attaching machine, the lifting foot assembly includes a lifting foot shaft, a lifting foot crank, a lifting foot connecting rod, and a lifting foot connecting hook. The lifting foot shaft is rotatably mounted inside the frame, and one end of the lifting foot connecting hook is connected to the twist clamp, while the other end is connected to the lifting foot shaft via the lifting crank. One end of the lifting foot connecting rod is rotatably connected to the drive wheel, while the other end is connected to the lifting foot shaft via the lifting foot crank.

[0008] In the aforementioned drive structure for the twisting clamp and wire cutting device of the button attaching machine, the lifting foot connecting rod includes a fisheye connector, a connecting rod, and a connecting seat. The two ends of the connecting rod are connected to the fisheye connector and the connecting seat. The connecting seat is movably connected to the drive wheel and is eccentrically arranged. The fisheye connector is movably connected to the lifting foot crank.

[0009] In the aforementioned drive structure for the twisting clamp and wire cutting device of a button sewing machine, the moving blade assembly includes a wire cutting shaft and a moving blade. The moving blade is fixed to the end of the wire cutting shaft, and the wire cutting shaft is rotatably disposed at the lower end of the frame.

[0010] In the aforementioned drive structure for the twist clamp and wire cutting device of a button sewing machine, the linkage assembly includes a wire cutting lever, a wire cutting lever, and a wire cutting crank. One end of the wire cutting lever is connected to the lifting foot shaft via a connecting crank, and the other end is movably connected to the wire cutting lever. The middle end of the wire cutting lever is rotatably connected to the frame. The wire cutting crank is fixed on the wire cutting shaft. When the wire cutting lever swings, it pushes the wire cutting crank to swing upward, and the wire cutting crank drives the wire cutting shaft and the moving blade to rotate and complete the wire cutting action.

[0011] In the aforementioned drive structure for the twist clamp and wire cutting device of a button attaching machine, the drive wheel is eccentrically provided with a stroke groove, the guide rail assembly includes a guide rail, a guide seat and a y-axis push plate, the guide seat is fixed on the frame, the guide rail is slidably disposed on the guide seat, and one end of the guide rail is slidably connected to the stroke groove of the drive wheel through a transmission plate, the other end of the guide rail is connected to the y-axis push plate, and the y-axis push plate is connected to the twist clamp.

[0012] In the aforementioned drive structure for the twisting clamp and wire cutting device of a button-attaching machine, the transmission plate is provided with a sliding column that cooperates with the stroke groove.

[0013] In the aforementioned drive structure for the twisting clamp and wire cutting device of a button sewing machine, a bearing is provided on the sliding column.

[0014] In the aforementioned drive structure for the twisting clamp and wire cutting device of a button-attaching machine, the stroke groove is a U-shaped structure.

[0015] In the aforementioned drive structure for the twisting clamp and wire cutting device of a button sewing machine, the stroke groove includes a drive section and a neutral section. The drive section is located away from the axis of the drive wheel, and the neutral section is located close to the axis of the drive wheel.

[0016] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0017] This invention uses a motor and a drive wheel to control the lifting of the presser foot and the cutting of the thread, and can also control the forward and backward movement of the button clamp. The structure is reasonable and simple, which can reduce the size of the button attaching machine. Attached Figure Description

[0018] Figure 1 This is a simplified structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the drive source and drive wheel of this utility model.

[0021] Figure 4 This is a structural schematic diagram of the pressure foot assembly and guide rail assembly of this utility model.

[0022] Figure 5 This is an enlarged view of point A of this utility model.

[0023] 1-Frame; 2-Drive source; 3-Drive wheel; 4-Torque clamp; 5-Moving blade assembly; 31-Pressure foot lifting assembly; 32-Guide rail assembly; 33-Connecting rod assembly; 34-Stroke groove; 51-Wire cutting shaft; 52-Moving blade; 311-Pressure foot lifting shaft; 312-Pressure foot lifting crank; 313-Pressure foot lifting connecting rod; 314-Pressure foot lifting hook; 315-Lifting crank;

[0024] 321-Guide rail; 322-Guide seat; 323-Y-axis push plate; 324-Transmission plate; 325-Sliding column; 326-Bearing; 331-Wire cutting rod; 332-Wire cutting lever; 333-Wire cutting crank; 334-Connecting crank; 341-Drive unit; 342-Neutral unit; 3131-Fish eye connector; 3132-Connecting rod; 3133-Connecting seat. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0026] like Figures 1-5The diagram shows a drive structure for a button-attaching machine's twist clamp and thread-cutting device, comprising a frame 1, a drive source 2, a drive wheel 3, a twist clamp 4, and a moving blade assembly 5. The drive source 2 is fixed to one side of the frame 1, and the drive wheel 3 is connected to the drive source 2. The drive wheel 3 is connected to the twist clamp 4 via a lifting foot assembly 31 and a guide rail assembly 32, and can control the twist clamp 4 to move back and forth and swing up and down. The lifting foot assembly 31 is connected to the moving blade assembly 5 via a connecting rod assembly 33. When the twist clamp 4 swings upward, the moving blade assembly 5 swings to complete the thread-cutting action. Specifically, this invention uses a motor and a drive wheel to control the lifting foot and thread cutting respectively, and can also control the forward and backward movement of the button clamp. The structure is reasonable and simple, and can reduce the size of the button-attaching machine.

[0027] In the aforementioned drive structure for the twist clamp and thread cutting device of the button attaching machine, the lifting foot assembly 31 includes a lifting foot shaft 311, a lifting foot crank 312, a lifting foot connecting rod 313, and a lifting foot connecting hook 314. The lifting foot shaft 311 is rotatably mounted inside the frame 1, and one end of the lifting foot connecting hook 314 is connected to the twist clamp 4, while the other end is connected to the lifting foot shaft 311 via a lifting crank 315. One end of the lifting foot connecting rod 313 is rotatably connected to the drive wheel 3, and the other end is connected to the lifting foot crank 312 via a lifting crank 313. 2. Connected to the lifting foot shaft 311, the lifting foot connecting rod 313 includes a fisheye connector 3131, a connecting rod 3132 and a connecting seat 3133. The two ends of the connecting rod 3132 are connected to the fisheye connector 3131 and the connecting seat 3133. The connecting seat 3133 is movably connected to the drive wheel 3 and is eccentrically set. The fisheye connector 3131 is movably connected to the lifting foot crank 312. Specifically, the fisheye connector is designed to facilitate connection with the lifting foot crank, and the eccentric setting is to facilitate the movement of the lifting foot connecting rod.

[0028] In the aforementioned drive structure for the twisting clamp and thread cutting device of the button-attaching machine, the moving blade assembly 5 includes a thread-cutting shaft 51 and a moving blade 52. The moving blade 52 is fixed to the end of the thread-cutting shaft 51, and the thread-cutting shaft 51 is rotatably mounted at the lower end of the frame 1. The connecting rod assembly 33 includes a thread-cutting pull rod 331, a thread-cutting lever 332, and a thread-cutting crank 333. One end of the thread-cutting pull rod 331 is connected to the lifting foot shaft 311 via a connecting crank 334, and its other end is movably connected to the thread-cutting lever 332. The middle end of the wire-cutting lever 332 is rotatably connected to the frame 1. The wire-cutting crank 333 is fixed on the wire-cutting shaft 51. When the wire-cutting lever 332 swings, it pushes the wire-cutting crank 333 to swing upward. The wire-cutting crank 333 then drives the wire-cutting shaft 51 and the moving blade 52 to rotate and complete the wire-cutting action. Specifically, the structure of the moving blade is existing technology and will not be described in detail here. After the moving blade completes one wire-cutting action, it will return to the set position. A reset device is provided on the wire-cutting shaft. The reset device is existing technology and is not shown in the figure.

[0029] In the aforementioned drive structure for the twist clamp and wire cutting device of the button attaching machine, the drive wheel 3 is eccentrically provided with a stroke groove 34. The guide rail assembly 32 includes a guide rail 321, a guide seat 322, and a y-axis push plate 323. The guide seat 322 is fixed on the frame 1. The guide rail 321 is slidably disposed on the guide seat 322. One end of the guide rail 321 is slidably connected to the stroke groove 34 of the drive wheel 3 through a transmission plate 324. The other end of the guide rail 321 is connected to the y-axis push plate 323, and the y-axis push plate 323 is connected to the twist clamp 4. The transmission plate 324 is provided with a sliding column 325 that cooperates with the stroke groove 34. The sliding column 325 is provided with a bearing 326. Specifically, this is to reduce the direct friction between the sliding column and the stroke groove and extend its service life.

[0030] In the aforementioned drive structure for the twisting clamp and thread-cutting device of a button-attaching machine, the travel groove 34 is a U-shaped structure. The travel groove 34 includes a drive part 341 and a neutral part 342. The drive part 341 is located away from the axis of the drive wheel 3, and the neutral part 342 is located close to the axis of the drive wheel 3. Specifically, the drive source drives the drive wheel to rotate reciprocally. The drive wheel can drive the transmission plate, guide rail, and Y-axis push plate to move reciprocally. In this way, the button clamp can also move with the Y-axis push plate. When the sliding column on the transmission plate slides to the neutral part, the clamp is lifted. The foot linkage moves downward, causing the lifting foot shaft to rotate. The lifting foot shaft then drives the lifting crank to rotate upward, which in turn drives the lifting foot connecting hook to move upward. The lifting foot connecting hook then causes the torsion clamp to swing upward. Simultaneously, due to the rotation of the lifting foot shaft, the connecting crank rotates downward, pushing the wire-cutting lever downward. The wire-cutting lever pushes one end of the wire-cutting lever downward, and the other end of the wire-cutting lever contacts the wire-cutting crank, causing the wire-cutting crank to swing. The wire-cutting crank then drives the wire-cutting shaft to rotate, which in turn drives the moving blade to rotate, completing the wire-cutting action.

[0031] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A drive structure for a twisting clamp and thread cutting device in a button-attaching machine, characterized in that: The device includes a frame (1), a drive source (2), a drive wheel (3), a twist clamp (4), and a moving blade assembly (5). The drive source (2) is fixed on one side of the frame (1), and the drive wheel (3) is connected to the drive source (2). The drive wheel (3) is connected to the twist clamp (4) through a lifting foot assembly (31) and a guide rail assembly (32), and can control the twist clamp (4) to move back and forth and swing up and down. The lifting foot assembly (31) is connected to the moving blade assembly (5) through a connecting rod assembly (33). When the twist clamp (4) swings upward, the moving blade assembly (5) swings to complete the wire cutting action.

2. The driving structure for the twisting clamp and thread cutting device of a button sewing machine according to claim 1, characterized in that: The presser foot lifting assembly (31) includes a presser foot lifting shaft (311), a presser foot lifting crank (312), a presser foot lifting rod (313), and a presser foot lifting hook (314). The presser foot lifting shaft (311) is rotatably mounted in the frame (1), and one end of the presser foot lifting hook (314) is connected to the torsion clamp (4), and the other end is connected to the presser foot lifting shaft (311) through the lifting crank (315). One end of the presser foot lifting rod (313) is rotatably connected to the drive wheel (3), and the other end is connected to the presser foot lifting shaft (311) through the presser foot lifting crank (312).

3. The driving structure for the twisting clamp and thread cutting device of a button sewing machine according to claim 2, characterized in that: The lifting foot linkage (313) includes a fisheye connector (3131), a connecting rod (3132), and a connecting seat (3133). The two ends of the connecting rod (3132) are connected to the fisheye connector (3131) and the connecting seat (3133). The connecting seat (3133) is movably connected to the drive wheel (3) and is eccentrically arranged. The fisheye connector (3131) is movably connected to the lifting foot crank (312).

4. The driving structure for the twisting clamp and thread cutting device of a button sewing machine according to claim 2, characterized in that: The moving blade assembly (5) includes a wire-cutting shaft (51) and a moving blade (52). The moving blade (52) is fixed to the end of the wire-cutting shaft (51), and the wire-cutting shaft (51) is rotatably disposed at the lower end of the frame (1).

5. The driving structure for the twisting clamp and thread cutting device of a button sewing machine according to claim 4, characterized in that: The linkage assembly (33) includes a wire-cutting lever (331), a wire-cutting lever (332), and a wire-cutting crank (333). One end of the wire-cutting lever (331) is connected to the lifting foot shaft (311) via a connecting crank (334), and the other end is movably connected to the wire-cutting lever (332). The middle end of the wire-cutting lever (332) is rotatably connected to the frame (1). The wire-cutting crank (333) is fixed on the wire-cutting shaft (51). When the wire-cutting lever (332) swings, it pushes the wire-cutting crank (333) to swing upward. The wire-cutting crank (333) then drives the wire-cutting shaft (51) and the moving blade (52) to rotate and complete the wire-cutting action.

6. The drive structure for the twisting clamp and thread cutting device of a button-attaching machine according to claim 1, 2, 3, 4, or 5, characterized in that: The drive wheel (3) is eccentrically provided with a stroke groove (34). The guide rail assembly (32) includes a guide rail (321), a guide seat (322), and a y-axis push plate (323). The guide seat (322) is fixed on the frame (1). The guide rail (321) is slidably disposed on the guide seat (322). One end of the guide rail (321) is slidably connected to the stroke groove (34) of the drive wheel (3) through a transmission plate (324). The other end of the guide rail (321) is connected to the y-axis push plate (323), and the y-axis push plate (323) is connected to the torsion clamp (4).

7. The driving structure for the twisting clamp and thread cutting device of a button sewing machine according to claim 6, characterized in that: The transmission plate (324) is provided with a sliding column (325) that cooperates with the stroke groove (34).

8. The drive structure for the twisting clamp and thread cutting device of a button sewing machine according to claim 7, characterized in that: The sliding column (325) is provided with a bearing (326).

9. The driving structure for the twisting clamp and thread cutting device of a button sewing machine according to claim 6, characterized in that: The travel groove (34) has a U-shaped structure.

10. The drive structure for the twisting clamp and thread cutting device of a button sewing machine according to claim 9, characterized in that: The travel groove (34) includes a drive section (341) and a neutral section (342). The drive section (341) is located away from the axis of the drive wheel (3), and the neutral section (342) is located close to the axis of the drive wheel (3).

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