Driving mechanism for button sewing movement of button sewing clamp in button sewing machine

Abstract

The utility model provides a driving mechanism for button sewing movement of a button sewing clamp in a button sewing machine, and belongs to the technical field of sewing. The technical problem that an existing button sewing clamp is low in stability when a button moves back and forth at a high speed is solved. According to the driving mechanism for the button sewing clamp to move the button in the button sewing machine, the button sewing machine comprises a machine shell, a lower shaft and the button sewing clamp, a button clamp base is arranged at the position, above the lower shaft, of the machine shell, the rear end of the button sewing clamp is connected with the rear end of the button clamp base, the driving mechanism comprises a swing rod, the swing rod is rotationally connected into the machine shell through a rotating shaft, and an avoiding connector is arranged at the front end of the swing rod. The lower shaft penetrates through the avoiding connector, and the upper end part of the avoiding connector is movably connected with the front end of the buckling and clamping seat. The nail catcher has the advantages of being compact in structure and enabling the nail catcher to move more stably.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing, and relates to a button sewing machine, in particular to a driving mechanism for moving a button clip to sew a button in a button sewing machine. Background Technique

[0002] A button sewing machine is a sewing tool used to sew buttons. Buttons are generally provided with four holes or two holes, and the distances between the holes of different buttons are different. When sewing, the button is grasped by the button clip of the button sewing machine, and the button clip is moved to enable the sewing needle to pass through different holes to complete the sewing of the button.

[0003] On the basis of realizing the basic sewing action, the button sewing machine needs to realize the horizontal movement and lifting action of the button clip, and also needs to realize the automatic thread cutting action. Therefore, the internal space of the button sewing machine is compact, and the positions of the lower shaft and the rotary hook in the button sewing machine are fixed. In order to avoid interference with the lower shaft, the current driving mechanisms for realizing the movement of the button clip on the Y-axis are all far away from the lower shaft and the button sewing station of the button clip. For example, a button sewing machine disclosed in a Chinese patent document [Application No. 202321669856.9], a feeding motor group and a driving rod group drive a feeding plate to move to realize the movement of the button clip. Among them, the feeding motor group and the driving rod group are both arranged at one end far away from the button sewing station of the button clip and are located behind the lower shaft; another example is a button sewing machine [Application No. 202410682529.X], a stepping motor II and a swing rod drive a feeding slide plate to move to realize the movement of the button clip on the feeding slide plate. Among them, the stepping motor II and the swing rod are both arranged at one end far away from the button sewing station of the button clip and are located behind the lower shaft; another example is a driving structure for a button clamping device of a button sewing machine [Application No. 202322246525.0], a driving motor II and a connecting rod drive the button clamping device to move along the Y-axis. The connecting rod is connected to the rear end of the button clip seat of the button clamping device, and the position of the connecting rod is arranged at a position higher than the workbench surface of the machine shell due to insufficient internal space. As can be seen from the above, in the prior art, the connection positions for driving the movement on the Y-axis are all located behind the hinge position of the button clip and the button clip seat in order to avoid the lower shaft, resulting in a longer overall length of the button sewing machine and a larger occupied space; the movement in the Y-axis direction is all realized by swinging. Since the connection position is far away from the button sewing station at the front end of the button clip, the displacement in the Y-axis direction will have a smaller swing angle due to the longer swing arm, and the stability is lower during the high-speed back-and-forth swing, increasing the generation of vibration and noise. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide a driving mechanism for moving a button clip to sew a button in a button sewing machine in view of the above problems existing in the prior art. The technical problem solved by the present utility model is that the structure is compact and the button movement is more stable.

[0005] The purpose of the present utility model can be achieved by the following technical solutions:

[0006] A driving mechanism for the movement of the button-clamping device in a button sewing machine. The button sewing machine includes a machine shell, a lower shaft, and a button-clamping device. A button-clamping seat is provided above the lower shaft on the machine shell. The rear end of the button-clamping device is connected to the rear end of the button-clamping seat. It is characterized in that the driving mechanism includes a swing rod, the swing rod is rotatably connected in the machine shell through a rotating shaft, an avoidance connecting head is provided at the front end of the swing rod, the lower shaft passes through the avoidance connecting head, and the upper end of the avoidance connecting head is movably connected to the front end of the button-clamping seat.

[0007] The swing rod rotates around the rotating shaft to enable the avoidance connecting head to drive the button-clamping seat to swing, so that the button-clamping seat drives the button-clamping device to move in the Y-axis direction. The avoidance connecting head allows the lower shaft to pass through, avoiding the assembly interference during the assembly of the lower shaft, that is, it can realize the movable connection between the swing rod and the front end of the button-clamping seat; the driving position in the Y-axis direction is located at the front end of the button-clamping seat, between the rear end of the button-clamping device and the button sewing station. The connection driving position between the avoidance connecting head and the button-clamping seat is close to the button sewing station, that is, the swing arm for driving the button-clamping seat to swing is short. The swing rod can swing through a larger angle to realize the movement of the front end of the button-clamping device in the Y-axis direction, and can more stably drive the button-clamping seat to drive the button-clamping device to move back and forth, reducing the vibration and noise during button sewing.

[0008] In the above driving mechanism for the movement of the button-clamping device in the button sewing machine, the avoidance connecting head is in a "C" shape, the notch of the avoidance connecting head faces left or right or downward, and the lower shaft passes through the notch of the avoidance connecting head. This structure can realize the avoidance of the lower shaft by the avoidance connecting head and can be connected to the button-clamping seat.

[0009] In the above driving mechanism for the movement of the button-clamping device in the button sewing machine, the avoidance connecting head is provided with a relief hole, the lower shaft is arranged in the relief hole, and the diameter of the relief hole is larger than the diameter of the lower shaft. This structure can realize the avoidance of the lower shaft by the avoidance connecting head and can be connected to the button-clamping seat.

[0010] In the above driving mechanism for the movement of the button-clamping device in the button sewing machine, the rotating shaft is located directly below the lower shaft. The rotating shaft is located directly below the lower shaft, that is, the rotation center of the swing rod is located on the central axis of the button sewing station, which can ensure the symmetry of the displacements on both sides in the Y-axis direction and further reduce the vibration during high-speed back-and-forth swinging.

[0011] In the above driving mechanism for the movement of the button-clamping device in the button sewing machine, a strip-shaped guide hole is axially opened at the front end of the button-clamping seat along the lower shaft. A connecting shaft is provided at the upper end of the avoidance connecting head, and a slider is connected to the connecting shaft. The slider is slidably connected in the strip-shaped guide hole. When the swing rod swings, the slider can slide in the strip-shaped guide hole to realize the movable connection between the avoidance connecting head and the button-clamping seat.

[0012] In the driving mechanism for the movement of the button-clamping clip in the above-mentioned button sewing machine, a Y-direction driving motor is fixed on one side of the machine housing. The swing rod includes a connecting section and a swinging section. The swinging section is located below the lower shaft. The connecting section is bent towards the side of the Y-direction driving motor relative to the swinging section. A two-link assembly is connected between the Y-direction driving motor and the end of the connecting section. The Y-direction driving motor is arranged on the side of the main shaft, which can reduce the overall length and make the overall structure of the button sewing machine more compact. The Y-direction driving motor drives the swing rod to swing back and forth through the two-link assembly, with a simple and efficient structure.

[0013] In the driving mechanism for the movement of the button-clamping clip in the above-mentioned button sewing machine, the driving mechanism further includes a push-pull rod. The push-pull rod is located directly above the lower shaft. The push-pull rod passes through the machine housing and can move back and forth along the axial direction. The rear end of the clip seat is rotatably connected to the front end of the push-pull rod. The push-pull rod can drive the clip seat to move back and forth in the X-axis direction, realizing the free movement of the button-clamping clip in the X-axis and Y-axis directions.

[0014] In the driving mechanism for the movement of the button-clamping clip in the above-mentioned button sewing machine, an X-direction driving motor is fixed on one side of the machine housing. A rack is axially formed on the push-pull rod. A driving gear is fixed on the motor shaft of the X-direction driving motor. The driving gear meshes with the rack on the push-pull rod. The X-direction driving motor is arranged on the side of the main shaft, which can reduce the overall length and make the overall structure of the button sewing machine more compact. The X-direction driving motor drives the driving gear to rotate back and forth, and drives the push-pull rod to move back and forth through the gear transmission between the driving gear and the rack on the push-pull rod, with a simple and efficient structure.

[0015] In the driving mechanism for the movement of the button-clamping clip in the above-mentioned button sewing machine, a mounting base plate is fixedly installed inside the machine housing. A long strip-shaped guide hole is axially formed on the mounting base plate. A guide slider is slidably connected in the guide hole. A hinge shaft is fixedly connected to the guide slider. The clip seat is arranged on the mounting floor. The hinge shaft is rotatably connected to the rear end of the clip seat. The front end of the push-pull rod is rotatably connected to the hinge shaft. The mounting base plate guides the clip seat to move along the axial direction of the lower shaft through the guide hole and the guide slider, and guides the back-and-forth swing of the clip seat through the hinge shaft, realizing the stability when the clip seat moves at high speed, thereby improving the stability of the button-clamping clip for button sewing.

[0016] Compared with the prior art, the driving mechanism for the movement of the button-clamping clip in this button sewing machine has the advantages of making the overall structure of the button sewing machine more compact, increasing the stability during button sewing, and reducing vibration and noise generation. Description of the Drawings

[0017] Figure 1 is a perspective structural view of the button sewing machine.

[0018] Figure 2 is a perspective structural view of the button sewing machine from another angle.

[0019] Figure 3 This is a three-dimensional structural schematic diagram when the present driving mechanism is assembled with the machine shell.

[0020] Figure 4 This is a three-dimensional structural schematic diagram of the present driving mechanism.

[0021] Figure 5 This is a side view structural schematic diagram of the present driving mechanism.

[0022] Figure 6 This is a bottom view structural schematic diagram of the present driving mechanism.

[0023] Figure 7 This is a three-dimensional structural schematic diagram of the buckle clamp seat and the mounting base plate when assembled.

[0024] Figure 8 This is a three-dimensional structural schematic diagram when the swing rod and the two-link component are assembled in the first embodiment.

[0025] Figure 9 This is a three-dimensional structural schematic diagram when the swing rod and the two-link component are assembled in the second embodiment.

[0026] Figure 10 This is a three-dimensional structural schematic diagram when the swing rod and the two-link component are assembled in the third embodiment.

[0027] In the figure, 1. Machine shell; 11. Lower shaft; 12. Button buckle clamp; 13. Button buckling station; 2. Buckle clamp seat; 21. Strip-shaped guide hole; 3. Y-direction driving motor; 31. Two-link component; 32. Short rod; 33. Long rod; 4. Swing rod; 4a. Connection section; 4b. Swing section; 4b1. Rotating shaft; 41. Connection head; 411. Avoidance section; 412. Vertical section; 413. Connecting section; 414; Relief hole; 42. Connecting shaft; 43. Slide block; 5. X-direction driving motor; 51. Driving tooth; 6. Push-pull rod; 61. Rack; 7. Mounting base plate; 71. Guide hole; 72. Guide slide block; 73. Hinge shaft. Detailed implementation manners

[0028] The following are specific embodiments of the present invention and in combination with the attached drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0029] Embodiment 1

[0030] As Figures 1 to 8As shown in the figure, the button sewing machine includes a machine shell 1, a lower shaft 11 and a button sewing clamp 12. The lower shaft 11 is rotatably connected in the machine shell 1 and can drive the rotary shuttle to rotate. A button clamp seat 2 is provided above the lower shaft 11 on the machine shell 1. The front end of the button sewing clamp 12 is a button sewing station 13, where the button is clamped. The button sewing station 13 is directly below the sewing needle; the rear end of the button sewing clamp 12 is hinged to the rear end of the button clamp seat 2, enabling the button sewing clamp 12 to swing up and down to achieve the lifting and lowering actions.

[0031] The driving mechanism for the button sewing clamp 12 to move for button sewing includes a Y-direction driving motor 3, an X-direction driving motor 5, a swing rod 4 and a push-pull rod 6. The swing rod 4 is rotatably connected in the machine shell 1 through a rotating shaft 4b1. The rotating shaft 4b1 is directly below the lower shaft 11. An avoidance connecting head 41 is provided at the front end of the swing rod 4. The lower shaft 11 passes through the avoidance connecting head 41, and the upper end of the avoidance connecting head 41 is movably connected to the front end of the button clamp seat 2; the push-pull rod 6 is directly above the lower shaft 11. The push-pull rod 6 passes through the machine shell 1 and can move back and forth along the axial direction. The rear end of the button clamp seat 2 is rotatably connected to the front end of the push-pull rod 6.

[0032] The avoidance connecting head 41 includes an avoidance section 411, a vertical section 412 and a connecting section 413. The avoidance section 411 protrudes to one side relative to the swing rod 4. The vertical section 412 is connected to the end of the avoidance section 411 and extends vertically upward. The upper end of the avoidance section 411 is higher than the lower shaft 11. The connecting section 413 is connected to the upper end of the avoidance section 411 and is directly above the lower shaft 11. A connecting shaft 42 is fixed to the upper end of the connecting section 413. A slider 43 is rotatably connected to the connecting shaft 42. A strip-shaped guide hole 21 is axially formed in the front end of the button clamp seat 2 along the lower shaft 11. The slider 43 is slidably connected in the strip-shaped guide hole 21. A nut is provided at the upper end of the connecting shaft 42, and the nut abuts against the upper end of the slider 43. The avoidance section 411, the vertical section 412 and the connecting section 413 form a "C"-shaped notch. The notch of the avoidance connecting head 41 faces to the right. The lower shaft 11 passes through the notch of the avoidance connecting head 41. There is an avoidance space between the lower shaft 11 and the vertical section 412. When the swing rod 4 swings to the right, the avoidance space prevents the lower shaft 11 and the vertical section 412 from contacting and colliding. When the swing rod 4 swings to the left, there is no block between the lower shaft 11 and the avoidance connecting head 41.

[0033] The Y-direction driving motor 3 is fixed to one side of the machine shell 1. The swing rod 4 includes a connecting section 4a and a swinging section 4b. The swinging section 4b is below the lower shaft 11. The rotating shaft 4b1 is fixedly connected to the middle section of the swinging section 4b. The Y-direction driving motor 3 is arranged on the side of the main shaft. The connecting section 4a is bent relative to the swinging section 4b towards the side of the Y-direction driving motor 3. A two-link assembly 31 is connected between the Y-direction driving motor 3 and the end of the connecting section 4a. The two-link assembly 31 includes a short rod 32 and a long rod 33. The short rod 32 and the long rod 33 are rotatably connected. The end of the short rod 32 is fixedly connected to the motor shaft of the Y-direction driving motor 3. The end of the long rod 33 is rotatably connected to the end of the connecting section 4a of the swing rod 4.

[0034] The X-direction driving motor 5 is fixed on one side of the machine housing 1. In this embodiment, the Y-direction driving motor 3 and the X-direction driving motor 5 are located on the same side. A rack 61 is axially provided on the push-pull rod 6, and a driving gear 51 is fixed on the motor shaft of the X-direction driving motor 5. The driving gear 51 meshes with the rack 61 on the push-pull rod 6.

[0035] A mounting bottom plate 7 is fixedly installed in the machine housing 1. A long strip-shaped guide hole 71 is axially provided on the mounting bottom plate 7 along the lower shaft 11. A guide slider 72 is slidably connected in the guide hole 71. A hinge shaft 73 is fixedly connected to the guide slider 72. The buckle seat 2 is arranged on the mounting floor. The hinge shaft 73 is rotatably connected to the rear end of the buckle seat 2. The front end of the push-pull rod 6 is rotatably connected to the hinge shaft 73. The mounting bottom plate 7 guides the buckle seat 2 to move axially along the lower shaft 11 through the guide hole 71 and the guide slider 72, and guides the back-and-forth swing of the buckle seat 2 through the hinge shaft 73.

[0036] The swing rod 4 rotates around the rotating shaft 4b1 to realize the avoidance of the connecting head 41 driving the buckle seat 2 to swing, so as to realize the buckle seat 2 driving the button buckle 12 to move in the Y-axis direction. The avoidance connecting head 41 can be penetrated by the lower shaft 11, avoiding the assembly interference during the assembly of the lower shaft 11, that is, realizing the movable connection between the swing rod 4 and the front end of the buckle seat 2; the X-direction driving motor 5 drives the driving gear 51 to rotate back and forth, and drives the push-pull rod 6 to move back and forth through the gear transmission between the driving gear 51 and the rack 61 on the push-pull rod 6, realizing the movement of the button buckle 12 in the X-axis direction; through the above structure, the button buckle 12 can move freely on the horizontal plane during buttoning, and can also drive the button to move freely, realizing the alignment of the hole of the button and the sewing needle, and realizing buttoning.

[0037] In this application, the Y-axis direction is the axial direction of the lower shaft 11, and the X-axis is the direction horizontally perpendicular to the axial direction of the lower shaft 11.

[0038] Embodiment Two

[0039] The structure and principle of this embodiment are basically the same as those of Embodiment One. The difference is that as Figure 9 shown, the avoidance connecting head 41 is in a "C" shape, the notch of the avoidance connecting head 41 faces left, and the lower shaft 11 passes through the notch of the avoidance connecting head 41. This structure can realize the avoidance of the avoidance connecting head 41 from the lower shaft 11 and can be connected to the buckle seat 2.

[0040] Embodiment Three

[0041] The structure and principle of this embodiment are basically the same as those of Embodiment One. The difference is that as Figure 10As shown, the avoidance connector 41 is provided with a relief hole 414, and the lower shaft 11 is inserted through the relief hole 414. The diameter of the relief hole 414 is larger than the diameter of the lower shaft 11, and the difference is sufficient for the swing rod 4 to avoid the lower shaft 11 during swinging. This structure can enable the avoidance connector 41 to avoid the lower shaft 11 and be connected to the buckle seat 2.

[0042] Embodiment 4

[0043] The structure and principle of this embodiment are basically the same as those of Embodiment 1. The difference is that the avoidance connector 41 is in a "C" shape, the notch of the avoidance connector 41 faces downward, and the lower shaft 11 passes through the notch of the avoidance connector 41. This structure can enable the avoidance connector 41 to avoid the lower shaft 11 and be connected to the buckle seat 2.

[0044] Embodiment 5

[0045] The structure and principle of this embodiment are basically the same as those of Embodiment 1. The difference is that a Y-direction driving motor is fixed on one side of the machine shell. The swing rod includes a connecting section and a swinging section. The swinging section is located below the lower shaft. The rotating shaft is fixedly connected to the middle section of the swinging section. The Y-direction driving motor is arranged on the side of the main shaft. The connecting section is bent towards the Y-direction driving motor side relative to the swinging section. A driving gear is fixed on the motor shaft of the Y-direction driving motor, and a sector gear is arranged at the end of the connecting section. The driving gear and the sector gear are meshed. The swing rod is driven to swing around the rotating shaft through gear transmission.

[0046] Embodiment 6

[0047] The structure and principle of this embodiment are basically the same as those of Embodiment 1. The difference is that a rotating block is rotatably connected to the upper end of the avoidance connector. A chute is axially formed along the lower shaft at the upper end of the rotating block. A connecting block is fixed on the lower side of the buckle seat, and the connecting block is slidably connected in the chute. The cooperation of the chute and the connecting block can enable the swing rod to drive the buckle seat to swing. During the swinging process, the rotating block will rotate and the connecting block will slide relative to the rotating block.

[0048] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A driving mechanism for moving a button clamp in a button sewing machine, the button sewing machine comprising a housing (1), a lower shaft (11) and a button clamp (12), a button clamp seat (2) being provided on the housing (1) above the lower shaft (11), a rear end of the button clamp (12) being connected to a rear end of the button clamp seat (2), characterized in that: The driving mechanism comprises a swing rod (4), the swing rod (4) being rotatably connected to the housing (1) via a rotating shaft (4b1), a shimming connector (41) being provided at the front end of the swing rod (4), the lower shaft (11) passing through the shimming connector (41), and the upper end of the shimming connector (41) being movably connected to the front end of the clip seat (2).

2. The driving mechanism for moving the button clamp in the button sewing machine according to claim 1, characterized in that: The avoidance connector (41) is in a "C" shape, the notch of the avoidance connector (41) faces left, right or downward, and the lower shaft (11) passes through the notch of the avoidance connector (41).

3. The driving mechanism for moving the button clamp in the button sewing machine according to claim 1, characterized in that: The avoidance connector (41) is provided with a clearance hole (414), the lower shaft (11) is inserted into the clearance hole (414), and the diameter of the clearance hole (414) is greater than the diameter of the lower shaft (11).

4. The driving mechanism for moving the button clamp and the button in the button sewing machine according to claim 1, 2 or 3, characterized in that: The rotating shaft (4b1) is located directly below the lower shaft (11).

5. The driving mechanism for moving the button clamp and the button in the button sewing machine according to claim 1, 2 or 3, characterized in that: A strip guide hole (21) is provided at the front end of the clip seat (2) along the axial direction of the lower shaft (11), a connecting shaft (42) is provided at the upper end of the avoidance connector (41), a slider (43) is connected to the connecting shaft (42), and the slider (43) is slidably connected in the strip guide hole (21).

6. The driving mechanism for moving the button clamp and the button in the button sewing machine according to claim 1, 2 or 3, characterized in that: A Y-direction drive motor (3) is fixed to one side of the housing (1); the swing arm (4) comprises a connecting section (4a) and a swing section (4b); the swing section (4b) is located below the lower shaft (11); the connecting section (4a) is bent relative to the swing section (4b) toward the side of the Y-direction drive motor (3); and the ends of the Y-direction drive motor (3) and the connecting section (4a) are connected via two connecting rod assemblies (31).

7. The driving mechanism for moving the button clamp and the button in the button sewing machine according to claim 1, 2 or 3, characterized in that: The driving mechanism further comprises a push-pull rod (6), wherein the push-pull rod (6) is located directly above the lower shaft (11), the push-pull rod (6) passes through the housing (1) and can move forward and backward along the axial direction, and the rear end of the clamp seat (2) is rotatably connected to the front end of the push-pull rod (6).

8. The driving mechanism for moving the button clamp in the button sewing machine according to claim 7, characterized in that: An X-direction drive motor (5) is fixed on one side of the housing (1); a rack (61) is provided on the push-pull rod (6) along the axial direction; a drive tooth (51) is fixed on the motor shaft of the X-direction drive motor (5); and the drive tooth (51) meshes with the rack (61) on the push-pull rod (6).

9. The driving mechanism for moving the button clamp in the button sewing machine according to claim 7, characterized in that: A mounting base plate (7) is fixed inside the housing (1), a long strip-shaped guide hole (71) is opened on the mounting base plate (7) along the axial direction of the lower shaft (11), a guide slider (72) is slidably connected inside the guide hole (71), a hinge shaft (73) is fixedly connected to the guide slider (72), the buckle clamp seat (2) is arranged on the mounting floor, the hinge shaft (73) is rotatably connected to the rear end of the buckle clamp seat (2), and the front end of the push-pull rod (6) is rotatably connected to the hinge shaft (73).

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