Clamping and feeding device of button sewing machine

Abstract

According to the technical scheme, the clamping and feeding device of the button sewing machine is characterized by comprising a machine frame, a sliding seat capable of moving front and back is arranged on the machine frame, a conveying rod is arranged on the sliding seat, a clamping rod capable of moving front and back relative to the conveying rod is arranged on the conveying rod, a clamping arm is arranged at the front end of the clamping rod, and the clamping arm is connected with the conveying rod. A clamping opening is formed in the front end of the conveying rod, the clamping opening and the clamping arm are matched with each other to form a material clamping opening, a reset spring is arranged between the material clamping rod and the conveying rod and used for keeping the material clamping opening in a clamping state, and a driving mechanism is arranged on the rack and used for driving the conveying rod to move. And the clamping state of the material clamping opening is released. When the conveying rod moves and pushes materials, the button clamping function is achieved, so that it is guaranteed that the buttons are stably conveyed into a mold base, and meanwhile the structure is simple and reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of button sewing machines, and more particularly to a clamping and feeding device for button sewing machines. Background Art

[0002] A button sewing machine is an automated device that rivets buttons onto garments, such as labels, tags, and caps. The most commonly used buttons are disc-shaped buttons with two or four holes (also known as flat buttons). By replacing various specialized accessories, a single button sewing machine can sew various types of buttons, including shank buttons, metal buttons, snap buttons, shank buttons, and official buttons.

[0003] The existing button sewing machine mainly includes a feeding device and a button sewing device; wherein, the button sewing device includes a mold base and a punch rod, the mold base is equipped with a lower button, and the punch rod is equipped with an upper button. After the punch rod punches down, the upper and lower buttons are pressed together. wherein, the existing feeding device of the lower button generally includes a vibrating plate and a conveying rod that moves back and forth, the vibrating plate is used to feed the lower button, and then the conveying rod moves back and forth to continuously feed the lower button into the mold base. In the process of the existing conveying rod moving to push the button, the button in front is prone to shaking and deviating, resulting in the button not being able to accurately fall into the mold base, affecting work efficiency and stability, and causing button waste. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a clamping and feeding device for a button sewing machine, whose conveying rod has the function of clamping buttons when moving and pushing the material, thereby ensuring that the buttons are stably delivered to the mold base. At the same time, the structure is simple and the reliability is strong.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a clamping and feeding device for a button sewing machine, comprising a frame, a slide that can move back and forth is provided on the frame, a conveying rod is provided on the slide, a clamping rod that can move back and forth relative to the conveying rod is provided on the conveying rod, a clamping arm is provided at the front end of the clamping rod, a clamping opening is provided at the front end of the conveying rod, the clamping opening and the clamping arm cooperate with each other to form a clamping opening, a reset spring is provided between the clamping rod and the conveying rod, the reset spring is used to keep the clamping opening in a clamped state, a driving mechanism is provided on the frame, the driving mechanism is used to drive the movement of the conveying rod, and to release the clamping state of the clamping opening.

[0006] The utility model is further configured as follows: a group of limiting mechanisms are provided on the frame, and the limiting mechanisms of one group correspond to the material taking position and the material discharging position of the conveying rod respectively; a limiting part is protruded on the slide seat, and the limiting mechanism of one group cooperates with the limiting part to realize limiting.

[0007] The utility model is further configured as follows: the driving mechanism includes a push rod, a push plate and a spring device, the slide seat is provided with a cavity with a notch, the push rod extends into the cavity from the notch, and a push plate that can move in the cavity is provided at the end of the push rod, the spring device includes a first gasket, a second gasket and a support spring, the first gasket is axially slidably matched with the push rod and abuts against the outer wall of the cavity, the second gasket is axially fixed to the push rod, and the support spring is abutted between the first gasket and the second gasket.

[0008] The utility model is further configured as follows: an unlocking portion is provided on the push plate, and the unlocking portion cooperates with the clamping rod. The forward movement of the push plate in the cavity drives the unlocking portion to push the clamping rod.

[0009] The utility model is further configured as follows: a fixed unlocking plate is further provided on the driving mechanism, and the unlocking plate is adapted to the clamping rod and has abutting and limiting effect on the clamping rod.

[0010] The utility model is further configured as follows: a feeding channel is provided on one side of the frame, and the clamping port corresponds to the feeding channel and is used for receiving buttons delivered from the feeding channel.

[0011] The utility model is further configured as follows: the clamping arm is rotatably matched with the clamping rod, the clamping rod is provided with a torsion spring rod, and the torsion spring rod is used to drive the clamping arm to rotate in a direction away from the clamping rod.

[0012] The utility model is further configured as follows: an inclined surface block is provided on the frame, and the inclined surface block is matched with the clamping arm to drive the clamping arm to rotate toward the direction of approaching the clamping rod.

[0013] The utility model is further configured as follows: a mold base located in front of the conveying rod is provided on the frame, and the mold base is arranged to be lifted up and down.

[0014] In summary, the present invention has the following beneficial effects:

[0015] Compared with the prior art, the utility model has a clamping port, which clamps the lower buckle, so that the lower buckle can be transported stably without shaking or deviation during the transportation process.

[0016] At the same time, the utility model is also provided with a conveying rod and a clamping rod, which are used to conveniently control the relative positions of the conveying rod and the clamping rod and the clamping opening of the clamping port through a driving mechanism and a reset spring. The structure is simple and ingenious and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a button sewing machine.

[0018] Figure 2It is a schematic diagram of the structure of the clamping mouth clamping the material when the clamping feeding device is in the material picking position.

[0019] Figure 3 It is a structural diagram of the clamping feeding device moving to the discharge position and releasing the material.

[0020] Figure 4 It is a schematic diagram of the overall structure of the clamping feeding device.

[0021] Figure 5 It is a schematic diagram of the explosion structure of the conveying rod and the clamping rod.

[0022] Figure 6 It is a schematic diagram of the local structure of the driving mechanism.

[0023] Figure 7 It is a structural diagram of the clamp arm with a torsion spring rod in the second embodiment.

[0024] Figure 8 It is a schematic diagram of the partial structure of the second embodiment when the inclined surface block and the clamping arm cooperate.

[0025] Figure numerals: 1. Frame; 2. Conveying rod; 201. Clamping mouth; 3. Clamping rod; 301. Clamping arm; 4. Clamping mouth; 5. Return spring; 6. Driving mechanism; 601. Pushing rod; 602. Pushing plate; 6021. Unlocking part; 603. Spring device; 6031. First gasket; 6032. Second gasket; 6033. Supporting spring; 7. Sliding seat; 701. Limiting part; 8. Cavity; 9. Unlocking plate; 10. Limiting mechanism; 11. Torsion spring rod; 12. Feed channel; 13. Inclined block; 14. Mold seat; 15. Buckle. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below with reference to the accompanying drawings.

[0027] This embodiment discloses a clamping and feeding device for a button sewing machine, such as Figure 1-8 As shown, it includes a frame 1, a slide 7 that moves forward and backward is provided on the frame 1, a conveying rod 2 is provided on the slide 7, a clamping rod 3 that can move forward and backward relative to the conveying rod 2 is provided on the conveying rod 2, a clamping arm 301 is provided at the front end of the clamping rod 3, and a clamping opening 201 is provided at the front end of the conveying rod 2. The clamping opening 201 and the clamping arm 301 cooperate with each other to form a clamping opening 4. A return spring 5 is provided between the clamping rod 3 and the conveying rod 2. The return spring 5 is used to keep the clamping opening 4 in a clamped state. Figure 5A chamber is provided in the clamping rod 3, and a reset spring 5 is provided in the chamber. A screw and a back plate fixed to the conveying rod 2 are provided in the chamber. One end of the reset spring 5 is against the back plate, and the other end is against the inner wall of the chamber. In this way, when the clamping rod 3 moves forward, the reset spring 5 will be compressed. After the external force is lost, the reset spring 5 drives the clamping rod 3 to move backward and reset. At the same time, the clamping arm 301 is connected to the clamping rod 3 through a strip hole, and the clamping arm 301 can move back and forth in the strip hole. A driving mechanism 6 is further provided on the frame 1. The driving mechanism 6 is used to drive the movement of the conveying rod 2 and to release the clamping state of the clamping port 4. Through the above structure, the clamping port 201 and the clamping arm 301 clamp the lower buckle, thereby ensuring that when the conveying rod 2 conveys the lower buckle 15 forward, the buckle is always in a stable state, without shaking or offset, and can be stably conveyed to the mold base 14 in the front.

[0028] For further information, please refer to Figure 4 A set of limiting mechanisms 10 is provided on the frame 1. The limiting mechanisms 10 of one set correspond to the material taking position and the material discharging position of the conveying rod 2 respectively. The sliding seat 7 is provided with a protruding limiting portion 701. The limiting mechanisms 10 of one set cooperate with the limiting portion 701 to achieve the limiting position. As a preferred embodiment of the present invention, the limiting mechanism 10 can have a screw structure that is easy to adjust. The thread on the screw can be used to adjust the position of the limit adaptively, which is convenient for use. Figure 4 In the figure, when the limiting mechanism 10 near the lower side presses against the limiting portion 701, the clamping port 4 just corresponds to the feed channel 12, and the lower buckle 15 can be smoothly received; when the slide 7 moves forward and is pressed against the limiting portion 701 by the limiting mechanism 10 near the upper side, the clamping port 4 just corresponds to the mold base 14, and the lower buckle can be smoothly placed into the mold base 14.

[0029] Further, refer to Figure 6The driving mechanism 6 includes a pushing rod 601, a pushing plate 602 and a spring device 603. A cavity 8 with a notch is provided on the slide 7. The pushing rod 601 extends into the cavity 8 from the notch, and a pushing plate 602 that can move in the cavity 8 is provided at the end of the pushing rod 601. The spring device 603 includes a first gasket 6031, a second gasket 6032 and a supporting spring 6033. The first gasket 6031 axially slides with the pushing rod 601 and abuts against the outer wall of the cavity 8. The second gasket 6032 is axially fixed to the pushing rod 601, and the supporting spring 6033 is abutted and arranged between the first gasket 6031 and the second gasket 6032; through the above structure, when the pushing rod 601 is pushed forward, the force is transmitted to the second gasket 6032, and then transmitted to the supporting spring 6033 and the first gasket 6031, and the slide 7 is pushed to move through the first gasket 6031, thereby realizing the movement of the conveying rod 2. When the limiting portion 701 is held against the limiting mechanism 10, the slide 7 cannot move forward any further. At this point, the force of the push rod 601 overcomes the elastic force of the support spring 6033 and is transferred to the push plate 602, driving the push plate 602 to move within the cavity 8. Simultaneously, the push plate 602 is provided with an unlocking portion 6021, which cooperates with the clamping rod 3. The forward movement of the push plate 602 within the cavity 8 drives the unlocking portion 6021 to push the clamping rod 3, thereby allowing the clamping rod 3 to drive the clamping arm 301 to separate from the clamping opening 201 to release the clamping. When retracting, the elastic force of the support spring 6033 is released and reset, and the push plate 602 moves backward against the inner wall of the cavity 8, allowing the slide 7 to be pulled backward.

[0030] Further, refer to Figure 4 The drive mechanism 6 is also provided with a fixed unlocking plate 9, which is adapted to the clamping rod 3 and acts as a stop against the clamping rod 3. When the push rod 601 drives the slide 7 and the conveying rod 2 back to the corresponding material removal position, the unlocking plate 9 will abut against the clamping rod 3, similarly driving the clamping rod 3 forward, causing the clamping arm 301 and the clamping jaw 201 to separate, releasing the clamping force.

[0031] In general, through the above settings, first refer to Figure 2 When in the material taking position, the clamping port 4 will open under the action of the unlocking plate 9, and the lower buckle can enter the clamping port 4 and push forward a short distance ( Figure 2 In the state shown below the middle arrow), under the action of the reset spring 5, the clamping rod 3 is reset relative to the conveying rod 2, so that the clamping port 4 clamps the lower buckle to ensure stable conveying. Figure 3 , the conveying rod 2 continues to convey forward, and when it reaches the discharge position ( Figure 3 The state shown below the middle arrow), through the action of the spring device 603 and the limiting mechanism 10, the pushing plate 602 will push the clamping rod 3 forward, thereby contacting the clamping state of the clamping port 4, so that the lower buckle can smoothly fall into the mold base 14.

[0032] Furthermore, a feeding channel 12 is provided on one side of the frame 1, and the clamping port 4 corresponds to the feeding channel 12, for receiving buttons fed from the feeding channel 12. The feeding channel 12 corresponds to an external vibrating plate or other device, thereby continuously conveying buttons to the clamping and feeding device.

[0033] Furthermore, the frame 1 is provided with a mold base 14 located in front of the conveying rod 2. The mold base 14 is set to rise and fall. The up and down lifting of the mold base 14 can adopt conventional settings such as a hydraulic rod or an inclined pushing mechanism provided at the bottom. The up and down lifting of the mold base 14 is mainly used for the mold base 14 to descend when the conveying rod 2 retreats, so that the lower buckle 15 and the clamping arm 301 can avoid it.

[0034] Furthermore, according to the cooperation relationship between the clamping arm 301 and the conveying rod 2, the present invention has two embodiments. In the first embodiment, the clamping arm 301 and the conveying rod 2 can move forward and backward, and the clamping opening and closing of the clamping mouth 4 can be achieved by the forward and backward movement. In the second embodiment, the clamping arm 301 and the conveying rod 2 can also rotate in cooperation on the basis of the forward and backward movement. The second embodiment is further described in detail below:

[0035] See also Figure 7-8 The clamping arm 301 rotates in coordination with the clamping rod 3, and the clamping rod 3 is provided with a torsion spring rod 11, which is used to drive the clamping arm 301 to rotate in the direction away from the clamping rod 3. At the same time, an inclined block 13 is provided on the frame 1, and the inclined block 13 is in contact with the clamping arm 301 to drive the clamping arm 301 to rotate in the direction close to the clamping rod 3. Therefore, when the material is in the material picking position, the clamping arm 301 will not rotate outwards under the action of the inclined block 13, and will remain in front of the clamping mouth 201. When the conveying rod 2 is pushed forward a short distance, based on the same principle as in Example 1, the clamping rod 3 is moved backwards by the action of the return spring 5, so that the clamping arm 301 and the clamping mouth 201 are close to and clamp the lower buckle 15. When moving forward again, the force of the return spring 5 is set to be greater than the force of the torsion spring rod 11. In this way, due to the friction after clamping, the clamping arm 301 will not rotate outwards, and the clamping state can be maintained to convey the lower buckle. Figure 7 After reaching the discharge position, the clamping rod 3 moves forward and drives the clamping arm 301 to loosen. At this time, the clamping arm 301 can rotate outward and open under the action of the torsion spring rod 11. The advantage of the second embodiment is that due to this rotating opening structure, the clamping arm 301 will not come into contact with the lower buckle after being placed in the mold base 14 during the retraction process, so that the mold base 14 no longer needs to have the lifting function, and the structure of the mold base 14 is simpler.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention should be included in the scope of protection of the present invention.

Claims

1. A clamping and feeding device for a button sewing machine, comprising a frame (1), characterized in that: The frame (1) is provided with a slide (7) that can move forward and backward, the slide (7) is provided with a conveying rod (2), the conveying rod (2) is provided with a clamping rod (3) that can move forward and backward relative to the conveying rod (2), the front end of the clamping rod (3) is provided with a clamping arm (301), the front end of the conveying rod (2) is provided with a clamping opening (201), the clamping opening (201) and the clamping arm (301) cooperate with each other to form a clamping opening (4), a return spring (5) is provided between the clamping rod (3) and the conveying rod (2), the return spring (5) is used to keep the clamping opening (4) in a clamped state, and the frame (1) is provided with a driving mechanism (6), the driving mechanism (6) is used to drive the movement of the conveying rod (2) and to release the clamping state of the clamping opening (4).

2. The clamping and feeding device for a button sewing machine according to claim 1, characterized in that: A group of limiting mechanisms (10) is provided on the frame (1), and the limiting mechanisms (10) of one group correspond to the material taking position and the material discharging position of the conveying rod (2), respectively. A limiting portion (701) is protrudingly provided on the slide seat (7), and the limiting mechanisms (10) of one group cooperate with the limiting portion (701) to achieve limiting.

3. The clamping and feeding device for a button sewing machine according to claim 1, characterized in that: The driving mechanism (6) includes a push rod (601), a push plate (602) and a spring device (603); a cavity (8) with a notch is provided on the slide seat (7); the push rod (601) extends into the cavity (8) from the notch, and a push plate (602) movable in the cavity (8) is provided at the end of the push rod (601); the spring device (603) includes a first gasket (6031), a second gasket (6032) and a supporting spring (6033); the first gasket (6031) is axially slidably matched with the push rod (601) and abuts against the outer wall of the cavity (8); the second gasket (6032) is axially fixed to the push rod (601); and the supporting spring (6033) is abutted between the first gasket (6031) and the second gasket (6032).

4. The clamping and feeding device for a button sewing machine according to claim 3, characterized in that: The push plate (602) is provided with an unlocking portion (6021), and the unlocking portion (6021) cooperates with the clamping rod (3). The forward movement of the push plate (602) in the cavity (8) drives the unlocking portion (6021) to push the clamping rod (3).

5. The clamping and feeding device for a button sewing machine according to claim 1, characterized in that: A fixed unlocking plate (9) is also provided on the driving mechanism (6). The unlocking plate (9) is adapted to the clamping rod (3) and has abutting and limiting effect on the clamping rod (3).

6. The clamping and feeding device for a button sewing machine according to claim 1, characterized in that: A feeding channel (12) is provided on one side of the frame (1), and the clamping port (4) corresponds to the feeding channel (12) and is used to receive buttons delivered from the feeding channel (12).

7. The clamping and feeding device for a button sewing machine according to claim 1, characterized in that: The clamping arm (301) is rotatably engaged with the clamping rod (3); a torsion spring rod (11) is provided on the clamping rod (3); and the torsion spring rod (11) is used to drive the clamping arm (301) to rotate in a direction away from the clamping rod (3).

8. The clamping and feeding device for a button sewing machine according to claim 7, characterized in that: The frame (1) is provided with an inclined surface block (13), and the inclined surface block (13) is engaged with the clamping arm (301) and is used to drive the clamping arm (301) to rotate in a direction close to the clamping rod (3).

9. A clamping and feeding device for a button sewing machine according to any one of claims 1 to 8, characterized in that: The frame (1) is provided with a mold base (14) located in front of the conveying rod (2), and the mold base (14) is arranged to be lifted up and down.

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