Presser foot mechanism of button sewing machine and button sewing machine

Abstract

The button sewing machine presser foot mechanism comprises a button sewing machine body, a button fixing mechanism and a feeding structure, the button sewing machine body comprises an installation base, a machine head fixedly installed on the upper surface of the installation base, an operation table board fixedly installed on the front face of the installation base and a presser foot arranged on the front face of the machine head, the button clamping plate mounting plate is arranged on the front side of the machine head. Compared with the prior art, the presser foot mechanism of the button sewing machine and the button sewing machine have the advantages that buttons can be positioned by the aid of the feeding structure before being fed, then the buttons are fed from the position below the button clamping structure by the aid of the feeding structure, the buttons are clamped by the aid of the button clamping structure, the buttons do not need to be clamped by the aid of a presser foot, and accordingly the button clamping efficiency is improved. Therefore, the buttons can be arranged at the same position every time the buttons are installed, the sewing holes of the buttons can be prevented from deviating from a machine needle of the button sewing machine when the buttons are installed, and the problem that the buttons are damaged due to the fact that the machine needle pierces the buttons after descending is avoided.

Description

Technical Field

[0001] This utility model relates to the field of button attaching machine technology, specifically to a button attaching machine presser foot mechanism and a button attaching machine. Background Technology

[0002] A button-attaching machine is used to attach buttons. The button-attaching machine reinforces the seams of stressed areas in garments, strengthens the ends of rounded buttonholes, and secures the top of the buttonhole. During production, after the buttons are attached, workers manually wrap thread around the back of the button several times to reinforce its stability. The button-attaching machine automates this process, shortening working time, increasing production efficiency, and reducing worker fatigue.

[0003] The main function of the presser foot on a button sewing machine is to secure flat buttons in the desired position. When using the presser foot, the starting point should align with the button start mark on the fabric to ensure the button is accurately secured in the intended position.

[0004] Traditional button sewing machines use a groove on the presser foot to hold the button, clamping it between the presser foot and the button holder. However, when sewing four-hole buttons, the four sewing holes can easily cause the button's holes to shift off-center from the machine's needle, leading to the needle piercing the button and causing it to break. To address these shortcomings, we propose a new presser foot mechanism and a new button sewing machine. Utility Model Content

[0005] The purpose of this utility model is to provide a button-attaching machine presser foot mechanism and a button-attaching machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a button-attaching machine presser foot mechanism and a button-attaching machine, comprising:

[0007] The button attaching machine body includes a mounting base, a machine head fixedly mounted on the upper surface of the mounting base, an operating table fixedly mounted on the front of the mounting base, a presser foot set on the front of the machine head, and a button clamping plate mounting plate set on the front of the machine head.

[0008] A button fixing mechanism is disposed below the button clamping plate mounting plate, and includes a button clamping structure and a driving structure disposed behind the button clamping structure for driving the button clamping structure to move.

[0009] The button clamping structure includes a first clamping plate and a second clamping plate, a circular groove formed on the opposite side of the first clamping plate and the second clamping plate, and a semi-circular limiting ring fixedly installed on the inner wall of the circular groove.

[0010] The feeding structure is located on the left side of the machine head and is used to feed buttons. It includes a protective cylinder fixedly installed on the left side of the machine head, a guide rod sleeved on the inner wall of the protective cylinder, a button positioning component located at the lower end of the guide rod, and a limiting component located inside the protective cylinder for limiting the guide rod.

[0011] The button positioning assembly includes a support plate fixedly mounted on the lower end of the guide rod, four positioning pins fixedly mounted at equal intervals on the upper surface of the support plate, and positioning rings fixedly mounted on the surface of the positioning pins.

[0012] Preferably, the limiting component includes a guide plate fixedly installed on the upper end of the guide rod, a limiting block fixedly installed on the surface of the guide plate, and a first stop and a second stop fixedly installed on the inner wall of the protective cylinder.

[0013] Preferably, the included angle between the first stop block and the second stop block is 90 degrees, and the limiting block is located between the first stop block and the second stop block.

[0014] Preferably, a compression spring is sleeved on the surface of the guide rod, and one end of the compression spring is fixedly connected to the inner bottom wall of the protective cylinder, while the other end of the compression spring is fixedly connected to the lower end of the guide disc.

[0015] Preferably, the drive structure includes an assembly plate fixedly mounted on the lower surface of the button clip mounting plate, a cylinder fixedly mounted on the lower surface of the assembly plate, a trapezoidal block fixedly mounted on the telescopic end of the cylinder, two guide blocks slidably mounted on the lower surface of the assembly plate, and tension springs disposed below the two guide blocks.

[0016] Preferably, the two ends of the tension spring are fixedly connected to the lower surfaces of the two guide blocks, and the front sides of the two guide blocks are fixedly connected to the back sides of the first clamping plate and the second clamping plate, respectively.

[0017] Preferably, both guide blocks have a ramp groove on the side near the trapezoidal block for the trapezoidal block to pass through.

[0018] This button-attaching machine, including its presser foot mechanism and the machine itself, uses a button-fixing mechanism and a feeding structure to place the button on a support plate. The four sewing holes of the button are then inserted into four positioning pins, positioning the button and the sewing holes. Next, the guide rod is pulled down, and the support plate is rotated until it is directly below the button clamping structure. Loosening the guide rod then causes the support plate to rise, allowing the button on the positioning pins to enter between the first and second clamping plates. Finally, a driving mechanism is used to move the button... The button clamping structure holds the button in place. Compared with existing technologies, this device uses a feeding structure to position the button before feeding. Then, the feeding structure feeds the button from below the button clamping structure and clamps it in place. There is no need to use a presser foot to clamp the button. This ensures that the button is in the same position every time it is installed. This also prevents the button's sewing hole from shifting off the button attaching machine's needle during installation, thus avoiding the problem of the needle piercing the button and causing damage.

[0019] The button-attaching machine's presser foot mechanism and button-attaching machine, by setting a limit component, when the support plate is rotated, the guide plate and the limit block will rotate accordingly. When the limit block contacts the first stop, the positioning pin is directly below the button clamping structure. The first stop can prevent the support plate from continuing to rotate, thereby avoiding excessive rotation of the support plate, which would cause it to deviate from directly below the button clamping structure and result in feeding failure. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the button clamping structure of this utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the driving structure of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the button positioning component of this utility model;

[0024] Figure 5 This is a schematic diagram of the orthographic section of the protective cylinder of this utility model;

[0025] Figure 6 This is a top-section structural diagram of the protective cylinder of this utility model;

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure of the button of this utility model.

[0027] In the diagram: 10 Mounting base, 11 Machine head, 12 Operating table, 13 Button clamping plate mounting plate, 14 Presser foot, 20 First clamping plate, 21 Second clamping plate, 22 Circular groove, 23 Semi-circular limiting ring, 30 Protective cylinder, 31 Guide rod, 40 Support plate, 41 Positioning pin, 42 Positioning ring, 50 Guide disc, 51 Limiting block, 52 First stop block, 53 Second stop block, 54 Compression spring, 60 Assembly plate, 61 Cylinder, 62 Trapezoidal block, 63 Guide block, 64 Tension spring, 65 Inclined groove, 70 Button. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1 This utility model provides a technical solution: a button-attaching machine presser foot mechanism and a button-attaching machine, including: a button-attaching machine body, a button fixing mechanism and a feeding structure.

[0030] The button attaching machine body includes a mounting base 10, a machine head 11 fixedly mounted on the upper surface of the mounting base 10, an operating table 12 fixedly mounted on the front of the mounting base 10, a presser foot 14 disposed on the front of the machine head 11, and a button clamp mounting plate 13 disposed on the front of the machine head 11. The presser foot 14 is connected to a pulse motor type automatic presser foot lifting transmission mechanism inside the button attaching machine. The pulse motor type automatic presser foot lifting transmission mechanism is existing technology and can control the movement of the presser foot 14, so it will not be described in detail.

[0031] The button fixing mechanism is located below the button clamp mounting plate 13, and includes a button clamping structure and a drive structure located behind the button clamping structure for driving the button clamping structure to move.

[0032] The button clamping structure includes a first clamping plate 20 and a second clamping plate 21, a circular groove 22 formed on the opposite side of the first clamping plate 20 and the second clamping plate 21, and a semi-circular limiting ring 23 fixedly installed on the inner wall of the circular groove 22. When the button is placed in the circular groove 22, the semi-circular limiting ring 23 can support the bottom of the button to prevent it from falling.

[0033] The drive structure includes an assembly plate 60 fixedly mounted on the lower surface of the button clamp mounting plate 13, a cylinder 61 fixedly mounted on the lower surface of the assembly plate 60, a trapezoidal block 62 fixedly mounted on the telescopic end of the cylinder 61, two guide blocks 63 slidably mounted on the lower surface of the assembly plate 60, and a tension spring 64 disposed below the two guide blocks 63. Each of the two guide blocks 63 has a ramp groove 65 on the side near the trapezoidal block 62 for the trapezoidal block 62 to pass through. When the cylinder 61 extends or retracts, it can drive the trapezoidal block 62 to slide along the surface of the ramp groove 65, thereby driving the first clamping plate 20 and the second clamping plate 21 to move closer to or further away from each other.

[0034] The two ends of the tension spring 64 are fixedly connected to the lower surfaces of the two guide blocks 63, and the front sides of the two guide blocks 63 are fixedly connected to the back sides of the first clamping plate 20 and the second clamping plate 21, respectively. In the initial state, the tension spring 64 can drive the first clamping plate 20 and the second clamping plate 21 to contact each other, thereby clamping the button. When the driving structure moves the trapezoidal block 62 to force the first clamping plate 20 and the second clamping plate 21 to open, the tension spring 64 is in the open state.

[0035] The feeding structure is located on the left side of the machine head 11 and is used to feed buttons. It includes a protective cylinder 30 fixedly installed on the left side of the machine head 11, a guide rod 31 sleeved on the inner wall of the protective cylinder 30, a button positioning component located at the lower end of the guide rod 31, and a limiting component located inside the protective cylinder 30 for limiting the guide rod 31.

[0036] The button positioning assembly includes a support plate 40 fixedly installed at the lower end of the guide rod 31, four positioning pins 41 fixedly installed at equal intervals on the upper surface of the support plate 40, and positioning rings 42 fixedly installed on the surface of the positioning pins 41. When the four sewing holes of the button are respectively inserted into the four positioning pins 41, the button can be positioned, and the positioning rings 42 can lift the button to prevent the lower surface of the button from contacting the support plate 40.

[0037] The limiting assembly includes a guide plate 50 fixedly installed on the upper end of the guide rod 31, a limiting block 51 fixedly installed on the surface of the guide plate 50, and a first stop block 52 and a second stop block 53 fixedly installed on the inner wall of the protective cylinder 30. A compression spring 54 is sleeved on the surface of the guide rod 31, and one end of the compression spring 54 is fixedly connected to the inner bottom wall of the protective cylinder 30, and the other end of the compression spring 54 is fixedly connected to the lower end of the guide plate 50.

[0038] After the button is placed on the positioning pin 41, the guide rod 31 is pulled down and the support plate 40 is rotated so that it is directly below the button clamping structure. At this time, the compression spring 54 is in a contracted state. Then, the guide rod 31 is released, and the compression spring 54 returns to its original position, which can drive the support plate 40 to rise. This allows the button on the positioning pin 41 to enter between the first clamping plate 20 and the second clamping plate 21. Then, the drive cylinder 61 contracts, driving the trapezoidal block 62 to move backward. This allows the force of the tension spring 64 to move the first clamping plate 20 and the second clamping plate 21 closer together, clamping the button in the circular groove 22. At this time, the semi-circular limiting ring 23 can lift the bottom of the button. Then, the guide rod 31 is pulled down to disengage the positioning pin 41 from the sewing hole on the button. After that, the support plate 40 is rotated to return to its original position, thus completing the feeding. At this time, the sewing hole on the button is coaxial with the button sewing machine needle.

[0039] The button clamp mounting plate 13 is connected to the electrical control system inside the button attaching machine body. The electrical control system inside the button attaching machine body is existing technology and will not be described in detail. After the button clamping structure clamps the button, the electrical control system can drive the button clamp mounting plate 13 and the button clamping structure to move laterally and longitudinally, so that the button can be sewn. After the sewing is completed, the drive cylinder 61 extends, which can drive the trapezoidal block 62 to move forward. The cooperation between the trapezoidal block 62 and the inclined groove 65 can drive the first clamping plate 20 and the second clamping plate 21 to open, so that the sewn button can be taken out.

[0040] Compared with existing technologies, this device uses a feeding structure to position the button before feeding. Then, the feeding structure feeds the button from below the button clamping structure and clamps it with the button clamping structure. There is no need to use the presser foot 14 to clamp the button. This ensures that the button is in the same position every time it is installed. This avoids the button sewing hole from shifting off the button attaching machine needle when installing the button, and prevents the button from being damaged by the needle piercing the button after it descends.

[0041] The included angle between the first stop 52 and the second stop 53 is 90 degrees, and the limiting block 51 is located between the first stop 52 and the second stop 53. When the support plate 40 is rotated, the guide plate 50 and the limiting block 51 will rotate accordingly. When the limiting block 51 contacts the first stop 52, the positioning pin 41 is located directly below the button clamping structure. The first stop 52 can prevent the support plate 40 from continuing to rotate, thereby avoiding excessive rotation of the support plate 40, which would cause it to deviate from directly below the button clamping structure and result in feeding failure.

[0042] After inserting the four sewing holes of the button into the four positioning pins 41, the button can be positioned.

[0043] After the button is placed on the positioning pin 41, the guide rod 31 is pulled down and the support plate 40 is rotated so that the support plate 40 is rotated directly below the button clamping structure. Then the guide rod 31 is released and the compression spring 54 is reset, which can drive the support plate 40 to rise, so that the button on the positioning pin 41 can enter between the first clamping plate 20 and the second clamping plate 21. Then the drive structure can drive the first clamping plate 20 and the second clamping plate 21 to clamp and fix the button.

[0044] Pull the guide rod 31 down to disengage the positioning pin 41 from the sewing hole on the button, then rotate the support plate 40 to reset it. At this time, the sewing hole on the button is coaxial with the button sewing machine needle. After the support plate 40 is reset, it can avoid the support plate 40 interfering with the sewing of the button.

[0045] After the button clamping structure clamps the button, the presser foot then fixes the fabric. Then, the electronic control system can drive the button clamping plate 13 and the button clamping structure to move laterally and longitudinally, so that the button can be sewn.

[0046] After sewing is completed, the drive cylinder 61 extends, which can drive the trapezoidal block 62 to move forward. The cooperation between the trapezoidal block 62 and the ramp groove 65 can drive the first clamping plate 20 and the second clamping plate 21 to open, so that the sewn button can be taken out.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A button-attaching machine presser foot mechanism and a button-attaching machine, characterized in that, include: The button attaching machine body includes a mounting base (10), a machine head (11) fixedly mounted on the upper surface of the mounting base (10), an operating table (12) fixedly mounted on the front of the mounting base (10), a presser foot (14) set on the front of the machine head (11), and a button clamp mounting plate (13) set on the front of the machine head (11). A button fixing mechanism is provided below the button clamping plate (13), which includes a button clamping structure and a drive structure provided behind the button clamping structure for driving the button clamping structure to move. The button clamping structure includes a first clamping plate (20) and a second clamping plate (21), a circular groove (22) formed on the opposite side of the first clamping plate (20) and the second clamping plate (21), and a semi-circular limiting ring (23) fixedly installed on the inner wall of the circular groove (22); The feeding structure is located on the left side of the machine head (11) and is used to feed buttons. It includes a protective cylinder (30) fixedly installed on the left side of the machine head (11), a guide rod (31) sleeved on the inner wall of the protective cylinder (30), a button positioning component located at the lower end of the guide rod (31), and a limiting component located inside the protective cylinder (30) for limiting the guide rod (31). The button positioning assembly includes a support plate (40) fixedly mounted on the lower end of the guide rod (31), four positioning pins (41) fixedly mounted at equal intervals on the upper surface of the support plate (40), and positioning rings (42) fixedly mounted on the surface of the positioning pins (41).

2. The button-attaching machine presser foot mechanism and button-attaching machine according to claim 1, characterized in that: The limiting assembly includes a guide plate (50) fixedly installed on the upper end of the guide rod (31), a limiting block (51) fixedly installed on the surface of the guide plate (50), and a first stop block (52) and a second stop block (53) fixedly installed on the inner wall of the protective cylinder (30).

3. The button-attaching machine presser foot mechanism and button-attaching machine according to claim 2, characterized in that: The included angle between the first stop (52) and the second stop (53) is 90 degrees, and the limiting block (51) is located between the first stop (52) and the second stop (53).

4. The button-attaching machine presser foot mechanism and button-attaching machine according to claim 2, characterized in that: A compression spring (54) is sleeved on the surface of the guide rod (31), and one end of the compression spring (54) is fixedly connected to the inner bottom wall of the protective cylinder (30), and the other end of the compression spring (54) is fixedly connected to the lower end of the guide plate (50).

5. The button-attaching machine presser foot mechanism and button-attaching machine according to claim 1, characterized in that: The drive structure includes an assembly plate (60) fixedly mounted on the lower surface of the button clip mounting plate (13), a cylinder (61) fixedly mounted on the lower surface of the assembly plate (60), a trapezoidal block (62) fixedly mounted on the telescopic end of the cylinder (61), two guide blocks (63) slidably mounted on the lower surface of the assembly plate (60), and a tension spring (64) disposed below the two guide blocks (63).

6. The button-attaching machine presser foot mechanism and button-attaching machine according to claim 5, characterized in that: The two ends of the tension spring (64) are fixedly connected to the lower surfaces of the two guide blocks (63), and the front sides of the two guide blocks (63) are fixedly connected to the back sides of the first clamping plate (20) and the second clamping plate (21), respectively.

7. The button-attaching machine presser foot mechanism and button-attaching machine according to claim 5, characterized in that: Both guide blocks (63) have ramps (65) on the side near the trapezoidal block (62) for the trapezoidal block (62) to pass through.

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