Driving device for controlling swing of button attaching clamp in button attaching machine

Abstract

This invention specifically relates to a drive device for controlling the swinging of a button clip in a button-attaching machine, belonging to the field of sewing machine technology. It includes a button clip, and the button clip and drive device transmit driving force through a clip holder. The drive device includes a swing arm with a rotating shaft supporting its swing. A motor is mounted at one end of the swing arm, driving the swing arm to swing back and forth. A connector is mounted at the other end of the swing arm, and the connector is movably connected to the clip holder. The connector transmits driving force to cause the clip holder to swing. The button clip is mounted on the clip holder, causing the clip holder to drive the button clip to swing. This device has a simple structure, saving internal structural space and reducing transmission components. It uses a direct-drive motor to the swing arm to drive the clip holder's swing, saving manufacturing costs. The simplified structure is more stable, with higher drive stability, reduced failure rate, reduced motor load, more efficient power output, and a longer overall service life.

Description

Technical Field

[0001] This invention belongs to the field of sewing machine technology, and specifically refers to a drive device for controlling the swing of the button clamp in a button attaching machine. Background Technology

[0002] A button sewing machine is a sewing tool used to sew buttons. Buttons are generally set with four or two holes. The spacing between the holes is different for different buttons. When sewing, the button is held by the button clamp of the button sewing machine. By moving the button clamp, the needle passes through different holes to sew the button.

[0003] Therefore, when sewing buttons, it is necessary to drive the button clip to move in two directions. First, it moves back and forth along the needle plate, driven by a motor at the rear of the machine housing. The axial rotational power of the motor is converted into linear reciprocating motion power through a transmission shaft. Second, it moves laterally left and right along the needle plate, controlled by a drive device below the button clip. For example, the drive mechanism for moving the button clip is described in patent document CN223017137U. Paragraph

[0033] of the instruction manual states: The Y-axis drive motor 3 is fixed on one side of the housing 1. The swing arm 4 includes a connecting section 4a and a swing section 4b. The swing section 4b is located below the lower shaft 11. The rotating shaft 4b1 is fixedly connected to the middle section of the swing section 4b. The Y-axis drive motor 3 is located on the side of the main shaft. The connecting section 4a is bent relative to the swing section 4b toward the Y-axis drive motor 3. The Y-axis drive motor 3 and the end of the connecting section 4a are connected by a two-bar assembly 31. The two-bar 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-axis drive motor 3. The end of the long rod 33 is rotatably connected to the end of the connecting section 4a of the swing arm 4.

[0004] The drive device for controlling the swing of the buckle clamp disclosed in this document has a complex structure, especially the design of the swing arm. The power is also transmitted between the swing arm and the motor through a connecting rod, which makes the stability of the swing arm driving the buckle clamp to swing low and prone to jumping. Moreover, a large torque is required to make the swing arm swing, which puts a large load on the motor. Under long-term operation, the entire drive mechanism wears out severely, has a high failure rate, and a shortened service life. Summary of the Invention

[0005] The purpose of this invention is to provide a driving device for controlling the swing of the button clamp in a button-attaching machine, which has a simple structure and stable output.

[0006] The objective of this invention is achieved as follows: a driving device for controlling the swing of the button clamp in a button-attaching machine includes a button clamp. The button clamp and the driving device transmit driving force through a button clamp seat. The driving device includes a swing arm with a rotating shaft supporting its swing. A motor is installed at one end of the swing arm, driving the swing arm to swing back and forth. A connector is installed at the other end of the swing arm, and the connector is movably connected to the button clamp seat. The connector transmits driving force to make the button clamp seat swing. The button clamp is mounted on the button clamp seat, causing the button clamp seat to drive the button clamp to swing. The driving device controls the button clamp to move laterally left and right on the needle plate, so that the sewing needle passes through adjacent button holes in the same row, completing the button sewing.

[0007] Further optimization: The swing arm is directly connected to the motor, driving the swing arm to swing back and forth, optimizing the transmission structure, reducing transmission components, and improving transmission stability.

[0008] Further optimization: The connection between the swing arm and the motor is provided with meshing teeth, and the motor is provided with gears. The gears are adapted to the meshing teeth, and the motor drives the swing arm to reciprocate through the gears. The gears on the motor main shaft are directly connected to the meshing teeth at the end of the swing arm, directly driving the swing arm to swing. The structure is simple, the stability is high, and the control is more precise.

[0009] Further optimization: The meshing teeth are straight racks, concave arc racks, or convex arc racks; the gears are circular gears or semi-circular gears. Multiple alternative structures can achieve direct motor drive of the rocker arm, realizing precise and stable control and drive.

[0010] Further optimization: An arc-shaped groove is provided at the connection between the rocker arm and the motor, and a cam is provided on the motor. The cam is adapted to the arc-shaped groove, and the motor drives the rocker arm to reciprocate through the cam. This solution has a simple structure, realizes direct motor drive of the rocker arm, improves drive efficiency, and saves manufacturing costs.

[0011] Further optimization: The arc-shaped slide groove is concave, and the corresponding cam is convex, so the two are compatible; or the arc-shaped slide groove is convex, and the corresponding cam is concave, so the two are compatible. Multiple alternative solutions can achieve direct motor drive of the rocker arm, and the structure is simple.

[0012] Further optimization: The connector head is provided with a connecting shaft, and the clip seat is connected to the connector head through the connecting shaft. A strip hole is provided at the connection between the clip seat and the connecting shaft, and the connecting shaft is movably connected in the strip hole, which facilitates the adjustment of the position of the clip seat under different working conditions to meet sewing requirements.

[0013] Further optimization: A wire hook drive shaft is arranged below the clamping seat. The wire hook drive shaft is located between the clamping seat and the swing rod. The connecting head is set in a "C" shape, and the notch of the "C" shape faces left or right, or the connecting head is set in a "square" shape. The wire hook drive shaft passes through the connecting head without interference. In a limited space, the rotation of the wire hook drive shaft and the swing of the swing rod can be realized without collision and interference with each other.

[0014] Further optimization: The rotating shaft is close to the side of the connecting head, so that the force arm of the motor output end is longer. When the torque for controlling the swing of the swing rod is rated, the power output by the motor does not need to be too large to drive the swing of the swing rod, which saves effort, reduces energy consumption, and prolongs the service life of the motor.

[0015] Further optimization: A bearing is arranged at the connection and support of the rotating shaft and the swing rod; or an annular oil groove is arranged at the connection and support of the swing rod and the rotating shaft. When the rotating shaft is connected to the swing rod, the support surface of the rotating shaft covers and seals the annular oil groove, and an oil filling hole communicated with the outer side wall of the annular oil groove is arranged.

[0016] The outstanding and beneficial technical effects of the present invention compared with the prior art are as follows: The driving device has a simple structure, saves the structural space inside the machine shell, reduces the transmission components, adopts the method of directly driving the swing rod by the motor to realize the swing of the clamping seat, saves the manufacturing cost, the simplified structure is more stable, and the driving stability is higher, reduces the failure rate, reduces the load of the motor, the power output is more efficient, and the overall service life is longer. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the driving device in the specific position of the button sewing machine in the present invention;

[0018] Figure 2 is a schematic structural diagram of the positional relationship between the driving device and the clamping seat in the present invention;

[0019] Figure 3 is a schematic structural diagram of the positional relationship between the driving device and the wire hook drive shaft in the present invention;

[0020] Figure 4 is a schematic structural diagram of the driving device in the present invention;

[0021] Figure 5 is a schematic structural diagram of an alternative solution of the driving device in the present invention;

[0022] Figure 6 is a schematic structural diagram of an alternative solution of the connection and support between the swing rod and the rotating shaft in the present invention;

[0023] Figure 7 is Figure 6 a schematic structural diagram of the swing rod in

[0024] In the diagram: 10-Hook clip, 11-Clip holder, 111-Strip hole, 12-Swing rod, 121-Meshing tooth, 122-Arc-shaped groove, 123-Annular oil groove, 124-Oil filling hole, 13-Shaft, 131-Bearing, 14-Motor, 141-Gear, 142-Cam, 15-Connector, 151-Connecting shaft, 16-Hook drive shaft. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1 —5: A drive device for controlling the swing of the button clip in a button attaching machine, including a button clip 10. The button clip 10 and the drive device transmit driving force through a clip seat 11. This driving force mainly controls the button clip 10 to move laterally back and forth along both sides of the needle plate. The drive device includes a swing arm 12. Depending on the internal space of the button attaching machine, the swing arm 12 can be bent or straight. In this invention, to save internal space, the swing arm 12 is straight. To facilitate stable swinging of the swing arm 12, a rotating shaft 13 is provided on the swing arm 12 to support its swing. A motor is provided at one end of the swing arm 12. 14. The swing arm 12 is directly connected to the motor 14. The motor 14 acts as a power source, directly driving the swing arm 12 to swing back and forth. The other end of the swing arm 12 is provided with a connector 15, which is movably connected to the clamp seat 11. The rotating shaft 13 is located between the motor 14 and the connector 15. To make the lever arm of the motor 14 output end longer, the rotating shaft 13 is positioned closer to the connector 15. When the torque controlling the swing arm 12 is at its rated value, the power output of the motor 14 does not need to be excessive to drive the swing arm 12 to swing, saving effort, reducing energy consumption, and extending the motor's lifespan. Figure 2 As indicated by the arrow pointing to point A, the connector 15 swings horizontally left and right, and transmits driving force to make the button holder 11 swing horizontally left and right. The button clip 10 is set on the button holder 11. The button holder 11 drives the button clip 10 to swing horizontally left and right. This driving device controls the button clip 10 to move horizontally left and right on the needle plate, so that the sewing needle passes through the adjacent button holes in the same row, thus completing the button sewing.

[0026] like Figure 2 As shown in Figure 3, the connector 15 is provided with a connecting shaft 151, and the clamp seat 11 is connected to the connector 15 through the connecting shaft 151. A strip hole 111 is provided at the connection between the clamp seat 11 and the connecting shaft 151. The connecting shaft 151 is movably connected in the strip hole 111. When debugging or adjusting to a new working condition, the position of the clamp seat can be adjusted at any time to keep the connecting shaft always in the strip hole. The adjustment range is large, no disassembly or installation is required, the positioning is accurate, convenient and quick.

[0027] like Figure 3As shown in Figure 4, a hook drive shaft 16 is provided below the clamp seat 11. The hook drive shaft 16 is located between the clamp seat 11 and the swing arm 12. This arrangement depends on the internal space of the fastening machine. In order to save space, the connector 15 is set in a "C" shape, with the "C" shaped notch facing left or right, or the connector is set in a "U" shape. The hook drive shaft 16 passes through the connector 15 and does not interfere with each other. Within a limited space, the rotation of the hook drive shaft 16 and the swing of the swing arm 12 are realized without collision or interference.

[0028] Based on the above specific embodiments, this invention employs the following two methods for the direct-drive rocker arm:

[0029] Method 1

[0030] like Figure 4 As shown, a meshing tooth 121 is provided at the connection between the swing arm 12 and the motor 14, that is, a meshing tooth 121 is provided at the tail of the swing arm 12. A gear 141 is provided on the main shaft of the motor 14. The gear 141 is adapted to the meshing tooth 121. The gear 141 on the main shaft of the motor 14 is directly connected to the meshing tooth 121 at the tail of the swing arm 12, directly driving the swing arm 12 to swing. This structure is simple, has high stability, and provides more precise control.

[0031] In specific implementations, the meshing teeth 121 can be straight racks, concave arc racks, or convex arc racks; correspondingly, the gears 141 can be circular gears or semi-circular gears. Various alternative structures can realize direct motor drive of the rocker arm, achieving precise and stable control and drive.

[0032] This invention uses only the meshing teeth of a circular gear and a spur rack for driving; other methods are within the scope of protection of this invention.

[0033] Method 2

[0034] like Figure 5 As shown, an arc-shaped groove 122 is provided at the connection between the rocker arm 12 and the motor 14, that is, the tail of the rocker arm 12 is provided as an arc-shaped groove 122. A cam 142 is provided on the main shaft of the motor 14. The cam 142 is adapted to the arc-shaped groove 122. The motor 14 drives the rocker arm 12 to reciprocate through the cam 142. This scheme has a simple structure, realizes direct motor drive of the rocker arm, improves drive efficiency, and saves manufacturing costs.

[0035] In specific implementations, the arc-shaped slide groove 122 can be concave, and the corresponding cam 142 can be convex, with the two being compatible; or the arc-shaped slide groove 122 can be convex, and the corresponding cam 142 can be concave, with the two being compatible. Multiple alternative solutions can achieve direct motor drive of the rocker arm, with a simple structure.

[0036] In terms of the technology of the above-described embodiments, the present invention adopts the following two connection and support relationships for the swing arm 12 and the pivot 13 that supports its swing.

[0037] Method 1

[0038] like Figure 3 As shown, a bearing 131 is provided at the connection support between the rotating shaft 13 and the swing arm 12. On the one hand, it can stably support the swing arm 12, and on the other hand, it can allow the swing arm 12 to swing smoothly and reduce the wear between the rotating shaft 13 and the swing arm 12.

[0039] Method 2

[0040] like Figure 6 and 7 As shown, an annular oil groove 123 is provided at the connection support between the swing arm 12 and the rotating shaft 13. When the rotating shaft 13 is connected to the swing arm 12, the support surface of the rotating shaft 13 covers and seals the annular oil groove 123. An oil filling hole 124 communicating with the outer wall of the annular oil groove 123 is provided. Lubricating oil is injected into the annular oil groove through the oil filling hole 124, so that the connection support between the rotating shaft 13 and the swing arm 12 is in a lubricated state, avoiding wear caused by direct friction.

[0041] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A driving device for controlling the swing of a button-attaching clamp in a button-attaching machine, comprising a button-attaching clamp (10) and a driving device which transmits a driving force to the button-attaching clamp (10) via a clamp seat (11), characterized in that: The driving device includes a swing rod (12), on which a rotating shaft (13) for supporting its swing is provided. One end of the swing rod (12) is provided with a motor (14), and the motor (14) drives the swing rod (12) to swing reciprocally. The other end of the swing rod (12) is provided with a connecting head (15), and the connecting head (15) is movably connected to the buckle seat (11). The connecting head (15) transmits the driving force to make the buckle seat (11) swing, so that the buckle seat (11) drives the button buckle clip (10) to swing. ​ 2. The driving device for controlling the swing of the button-attaching clamp in the button-attaching machine according to claim 1, characterized in that: The swing rod (12) is directly connected to the motor (14) to drive the swing rod (12) to swing reciprocally.

3. The driving device for controlling the swing of the button-attaching clamp in the button-attaching machine according to claim 1 or 2, characterized in that: Engaging teeth (121) are provided at the connection between the swing rod (12) and the motor (14), a gear (141) is provided on the motor (14), the gear (141) is adapted to the engaging teeth (121), and the motor drives the swing rod (12) to move reciprocally through the gear (141).

4. The driving device for controlling the swing of the button-attaching clamp in the button-attaching machine according to claim 3, characterized in that: The engaging teeth (121) are straight rack teeth, or concave arc rack teeth, or convex arc rack teeth; the gear (141) is a circular gear or a semi-circular gear.

5. The driving device for controlling the swing of the button-attaching clamp in the button-attaching machine according to claim 1 or 2, characterized in that: An arc-shaped chute (122) is provided at the connection between the swing rod (12) and the motor (14), a cam (142) is provided on the motor (14), the cam (142) is adapted to the arc-shaped chute (122), and the motor drives the swing rod (12) to move reciprocally through the cam (142).

6. The driving device for controlling the swing of the button-attaching clamp in the button-attaching machine according to claim 5, characterized in that: The arc-shaped chute (122) is concave, and the corresponding cam (142) is convex, and the two are adapted to each other; or the arc-shaped chute (122) is convex, and the corresponding cam (142) is concave, and the two are adapted to each other.

7. The driving device for controlling the swing of the button-attaching clamp in a button-attaching machine according to claim 1, characterized in that: A connecting shaft (151) is provided on the connecting head (15), the buckle seat (11) is connected to the connecting head (15) through the connecting shaft (151), a strip-shaped hole (111) is provided at the connection between the buckle seat (11) and the connecting shaft (151), and the connecting shaft (151) is movably connected in the strip-shaped hole (111).

8. The driving device for controlling the swing of the button-attaching clamp in the button-attaching machine according to claim 1 or 7, wherein: A wire hook driving shaft (16) is provided below the buckle seat (11), and the wire hook driving shaft (16) is located between the buckle seat (11) and the swing rod (12). The connecting head (15) is set in a "C" shape, the concave opening of the "C" shape faces left or right, or the connecting head (15) is set in a "mouth" shape. The wire hook driving shaft (16) passes through the connecting head (15) without interference.

9. The driving device for controlling the swing of the button-attaching clamp in the button-attaching machine according to any one of claims 1 or 2 or 7, characterized in that: The rotating shaft (13) is on the side close to the connecting head (15).

10. The driving device for controlling the swing of the button-attaching clamp in the button-attaching machine according to claim 9, characterized in that: A bearing (131) is provided at the connection and support between the rotating shaft (13) and the swing rod (12); or an annular oil groove (123) is provided at the connection and support between the swing rod (12) and the rotating shaft (13). When the rotating shaft (13) is connected to the swing rod (12), the support surface of the rotating shaft (13) covers and seals the annular oil groove (123), and an oil filling hole (124) communicating with the annular oil groove (123) is provided on the outer side wall of the annular oil groove (123).

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