Embroidery machine presser foot driving device

Abstract

The utility model relates to an embroidery machine presser foot driving device, and relates to the field of computerized embroidery machines, the embroidery machine presser foot driving device comprises a driving arm, a mounting groove is formed in the driving arm, an electromagnet is arranged at one end in the mounting groove, a magnetic attraction block is arranged at the other end of the mounting groove, and the electromagnet is connected with a pressure spring; one end, far away from the electromagnet, of the pressure spring is connected with the magnetic attraction block; a magnetic attraction block is arranged in the mounting groove, a clamping block is rotationally connected to the magnetic attraction block, a clamping plate is arranged on the side wall of the mounting groove, the clamping block is connected with the clamping plate in a clamped mode, and a rotation adjusting assembly for controlling the clamping block to be connected with or separated from the clamping plate in a clamped mode is connected to the clamping block. The device has the effect of preventing the magnetic attraction block from position deviation due to centrifugal force, and the effect of improving the precision and stability of presser foot position adjustment is achieved.

Description

Technical Field

[0001] The present application relates to the field of computer embroidery machines, and in particular to a presser foot driving device for embroidery machines. Background Art

[0002] Embroidery machines, also known as embroidery machines, are modern advanced embroidery machines that can achieve high speed and high efficiency in traditional hand embroidery. During the operation of the embroidery machine, the power device drives the needle bar to move up and down through the transmission mechanism to achieve embroidery. In order to press the fabric tightly, the needle bar frame is also equipped with a presser foot that matches each needle bar. The presser foot moves with the needle bar under the drive of the needle bar.

[0003] Prior art CN219731307U discloses a presser foot driving device for an embroidery machine, comprising a presser foot main body, a driving mechanism and a frame, wherein the driving mechanism comprises a motor, a driving arm is installed at one end of the motor, a slide is arranged inside the driving arm, an electromagnet is fixedly installed on one side inside the slide, a magnetic block is slidably installed on the other side inside the slide, and the magnetic block and the electromagnet are connected by a spring; the distance between the magnetic block and the electromagnet can be adjusted by adjusting the current passed into the electromagnet, so as to adjust the height of the presser foot main body during the driving process, and there is no need to frequently adjust the working parameters of the motor, the adjustment method is simple and convenient, the service life of the motor is extended, the driving flexibility of the presser foot main body is improved, the overall structure is simple, the loss and error in the torque transmission process are reduced, and the stability and reliability of the presser foot action of the presser foot main body are improved. However, during the rotation of the driving arm, the magnetic block may move under the action of centrifugal force, and the distance between the magnetic block and the electromagnet will deviate from the initially set distance, thereby affecting the precision and stability of the presser foot position adjustment.

[0004] With respect to the above-mentioned related technologies, the inventor believes that the distance between the magnetic block and the electromagnet changes during the rotation due to the centrifugal force, which affects the precision and stability of the presser foot position adjustment. Utility Model Content

[0005] In order to solve the problem that the distance between the magnetic block and the electromagnet changes during rotation due to the centrifugal force, thereby affecting the precision and stability of the presser foot position adjustment, the present application provides an embroidery machine presser foot drive device.

[0006] The present application provides an embroidery machine presser foot driving device, which adopts the following technical solution:

[0007] A presser foot driving device for an embroidery machine comprises a driving arm, a mounting groove is provided in the driving arm, an electromagnet is arranged at one end of the mounting groove, a magnetic block is arranged at the other end, the electromagnet is connected to a pressure spring, and the end of the pressure spring away from the electromagnet is connected to the magnetic block; a clamping block is rotatably connected to the magnetic block, a clamping plate is provided on the side wall of the mounting groove, the clamping block is clamped with the clamping plate, a rotating adjustment component for controlling the clamping or separation of the clamping block and the clamping plate is connected to the clamping block, and a limiting plate for limiting the clamping block is provided on the magnetic block.

[0008] By adopting the above technical solution, the amount of electricity flowing into the electromagnet in the driving arm is controlled to control the distance between the electromagnet and the magnetic block, thereby adjusting the position of the presser foot. When the magnetic block approaches the electromagnet, the clamping block is pushed by the clamping teeth to rotate in the direction close to the magnetic block. When the position of the magnetic block is fixed, the clamping block is adjusted by rotating the adjustment component so that the clamping block is clamped with the clamping plate, and the clamping block is abutted with the limit plate, thereby fixing the position of the magnetic block so that the magnetic block does not move due to centrifugal force. When the magnetic block needs to move in the direction away from the electromagnet, the clamping block is adjusted by rotating the adjustment component so that the clamping block is separated from the clamping plate, and then the amount of electricity flowing into the electromagnet is controlled to adjust the distance between the magnetic block and the electromagnet.

[0009] Optionally, the clamping plate is a toothed plate, and a clamping tooth is provided on a side of the clamping plate close to the magnetic attraction block.

[0010] By adopting the above technical solution, the engaging teeth are brought into contact with the engaging block, thereby achieving the engaging of the engaging block with the engaging plate.

[0011] Optionally, a side of the engaging tooth close to the electromagnet is perpendicular to an inner wall of the driving arm, and a side of the engaging tooth away from the electromagnet is inclined to the driving arm.

[0012] By adopting the above technical solution, when the inclined surface of the engaging tooth abuts against the engaging block, the engaging block moves along with the magnetic block in the direction close to the electromagnet, and the engaging block rotates in the direction close to the magnetic block under the thrust of the engaging tooth. When the engaging block abuts against the vertical surface of the engaging tooth, the engaging block engages with the engaging tooth to achieve limited fixation of the magnetic block.

[0013] Optionally, the side of the clamping block close to the electromagnet is inclined, and the side away from the electromagnet is vertically arranged. When the clamping block is clamped with the clamping tooth, the vertical surface of the clamping block abuts against the vertical surface of the clamping tooth.

[0014] By adopting the above technical solution, the inclined surface of the clamping block abuts against the inclined surface of the clamping tooth, so that the friction between the clamping block and the clamping tooth is small when the clamping block moves with the magnetic block. When the vertical surface of the clamping block abuts against the vertical surface of the clamping tooth, the magnetic block is limited and fixed, making the fixing effect more stable.

[0015] Optionally, the rotation adjustment component includes an electric telescopic rod connected to the magnetic block, and the electric telescopic rod is arranged on a side of the magnetic block away from the electromagnet; an end of the electric telescopic rod away from the magnetic block is connected to an adjustment chain, and an end of the adjustment chain away from the electric telescopic rod is connected to the clamping block, a side of the clamping block close to the magnetic block is connected to a return spring, and an end of the return spring away from the clamping block is connected to the magnetic block.

[0016] By adopting the above technical solution, when the magnetic block approaches the electromagnet, the clamping block is pushed by the clamping teeth to rotate in the direction close to the magnetic block. When the position of the magnetic block is fixed, the reset spring makes the clamping block perpendicular to the magnetic block, the clamping block abuts against the limit plate, and the clamping block abuts against the clamping teeth, thereby fixing the position of the magnetic block so that the magnetic block does not move due to centrifugal force. When it is necessary to adjust the magnetic block in the direction away from the electromagnet, first move the magnetic block in the direction close to the electromagnet to provide space for the rotation of the clamping block, and then drive the adjustment chain to move in the direction away from the electromagnet through the electric telescopic rod, thereby driving the clamping block to rotate in the direction close to the magnetic block, so that there is a gap between the clamping block and the clamping teeth, and then adjust the amount of current flowing in the electromagnet to adjust the magnetic block in the direction away from the electromagnet.

[0017] Optionally, a limiting slide groove is provided in the driving arm, a limiting slider is connected to the magnetic block, and the limiting slider is slidably connected to the limiting slide groove.

[0018] By adopting the above technical solution, the setting of the limiting slide groove allows the magnetic attraction block to remain stable during the movement towards or away from the electromagnet, thereby making the position adjustment of the presser foot more stable.

[0019] Optionally, a through hole through which the rotation adjustment component can extend is formed on a side of the driving arm away from the electromagnet.

[0020] By adopting the above technical solution, when the electric telescopic rod is adjusted, it will occupy the space in the driving arm, thereby reducing the moving space of the magnetic block. The electric telescopic rod extends out of the driving arm through the through hole, so that the moving space of the magnetic block is larger.

[0021] Optionally, both sides of the magnetic block are rotatably connected to the clamping blocks, and both sides of the driving arm corresponding to the clamping blocks are connected to the clamping plates.

[0022] By adopting the above technical solution, clamping blocks and clamping plates are provided on both sides, so that the limiting fixation of the magnetic suction block is more stable.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Rotate the adjustment component to adjust the clamping block so that the clamping block is clamped with the clamping plate, and the clamping block is abutted with the limit plate, thereby fixing the position of the magnetic block so that the magnetic block does not move due to centrifugal force;

[0025] 2. The setting of the limit slide makes the magnetic block remain stable when moving towards or away from the electromagnet, so that the position adjustment of the presser foot is more stable;

[0026] 3. The through hole on the driving arm allows the electric telescopic rod to extend out of the driving arm through the through hole, so that the moving space of the magnetic suction block is larger. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a presser foot driving device of an embroidery machine;

[0028] Figure 2 It is a partial structural schematic diagram of the driving arm;

[0029] Figure 3 yes Figure 2 A magnified schematic diagram of part A;

[0030] Figure 4 It is a schematic diagram of the cross-sectional structure of the driving arm.

[0031] Explanation of the accompanying drawings: 1. Transmission motor; 2. Driving arm; 21. Mounting slot; 211. Snap-on plate; 212. Snap-on tooth; 22. Electromagnet; 23. Magnetic block; 231. Snap-on block; 232. Limiting plate; 233. Limiting rod; 234. Limiting slider; 24. Pressure spring; 25. Through hole; 26. Limiting slide groove; 261. Limiting baffle; 3. Presser foot adjustment assembly; 31. First connecting rod; 32. Second connecting rod; 33. Sliding rod; 34. Driving rod; 35. Presser foot; 4. Rotation adjustment assembly; 41. Electric telescopic rod; 42. Adjustment chain; 43. Reset spring. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiment of the present application discloses a presser foot driving device for an embroidery machine.

[0034] Reference Figure 1 , Figure 2 and Figure 3A presser foot driving device for an embroidery machine includes a transmission motor 1, a transmission shaft of the transmission motor 1 is fixedly connected to a driving arm 2, a mounting slot 21 is provided in the driving arm 2, an electromagnet 22 is fixedly connected to one end of the mounting slot 21, a magnetic block 23 is slidably connected to the other end, a pressure spring 24 is fixedly connected to the electromagnet 22, and one end of the pressure spring 24 away from the electromagnet 22 is fixedly connected to the magnetic block 23. A presser foot adjusting assembly 3 is rotatably connected to the magnetic block 23 at one side of the magnetic block 23 close to the opening of the mounting slot 21. A clamping block 231 is rotatably connected to the magnetic block 23 through a hinge. A clamping plate 211 is fixed on the side wall of the mounting groove 21, and the clamping block 231 is clamped with the clamping plate 211. A limiting plate 232 for limiting the clamping block 231 is fixedly connected to the magnetic block 23, and a limiting rod 233 is fixedly connected to the limiting plate 232. When the clamping block 231 abuts against the clamping plate 211, the limiting rod 233 abuts against the clamping block 231. The clamping block 231 is connected with a rotation adjustment component 4 for controlling the clamping block 231 to be clamped or separated from the clamping plate 211.

[0035] The presser foot adjustment assembly 3 includes a first connecting rod 31 rotatably connected to the magnetic block 23, one end of the first connecting rod 31 is connected to the second connecting rod 32, one end of the second connecting rod 32 is rotatably connected to the sliding rod 33, one end of the sliding rod 33 is rotatably connected to the driving rod 34, and the driving rod 34 is fixedly connected to the presser foot 35. The transmission motor 1 drives the driving arm 2 to rotate. The first connecting rod 31 is driven by the driving arm 2, the second connecting rod 32 is driven by the first connecting rod 31, and the sliding rod 33 is driven by the second connecting rod 32. The sliding rod 33 is slidably connected to the embroidery machine, and the driving rod 34 is driven by the sliding rod 33, and finally the presser foot 35 is driven to move up and down by the driving rod 34.

[0036] The clamping plate 211 is a toothed plate, and a plurality of clamping teeth 212 are fixedly connected to one side of the clamping plate 211 close to the magnetic block 23. The side of the clamping teeth 212 close to the electromagnet 22 is perpendicular to the inner wall of the driving arm 2, and the side away from the electromagnet 22 is inclined to the driving arm 2. A gap is provided between adjacent clamping teeth 212. The side of the clamping block 231 close to the electromagnet 22 is inclined, and the side away from the electromagnet 22 is vertically provided. When the clamping block 231 is clamped with the clamping teeth 212, the vertical surface of the clamping block 231 abuts against the vertical surface of the clamping teeth 212. The clamping blocks 231 are rotatably connected to both sides of the magnetic block 23, and the clamping plates 211 are fixedly connected to both sides of the driving arm 2 corresponding to the clamping blocks 231.

[0037] The rotation adjustment component 4 includes an electric telescopic rod 41 fixedly connected to the magnetic block 23, and the electric telescopic rod 41 is arranged on the side of the magnetic block 23 away from the electromagnet 22; the end of the electric telescopic rod 41 away from the magnetic block 23 is fixedly connected to the adjustment chain 42, and the end of the adjustment chain 42 away from the electric telescopic rod 41 is fixedly connected to the clamping block 231, and the side of the clamping block 231 close to the magnetic block 23 is fixedly connected to the return spring 43, and the end of the return spring 43 away from the clamping block 231 is fixedly connected to the magnetic block 23. A through hole 25 for the rotation adjustment component 4 to extend is opened on the side of the driving arm 2 away from the electromagnet 22.

[0038] Reference Figure 4 A limit slide groove 26 is provided on the inner wall of the driving arm 2, a limit slider 234 is connected to the magnetic block 23, the limit slider 234 is slidably connected to the limit slide groove 26, and the limit slider 234 is arranged at one end of the magnetic block 23 away from the presser foot adjustment assembly 3. A limit baffle 261 is arranged at the opening of the limit slide groove 26 to limit the sliding of the limit slider 234, the limit slide groove 26 is T-shaped, and the limit slider 234 is T-shaped.

[0039] The implementation principle of the presser foot driving device of an embroidery machine in the embodiment of the present application is as follows: the transmission motor 1 drives the driving arm 2 to rotate, and the driving arm 2 drives the presser foot adjustment assembly 3 to move, thereby driving the presser foot to reciprocate and rise and fall. By controlling the amount of electricity supplied to the electromagnet 22 in the driving arm 2, the distance between the electromagnet 22 and the magnetic block 23 is controlled, thereby adjusting the position of the presser foot. When the magnetic block 23 approaches the electromagnet 22, the clamping block 231 is pushed by the clamping teeth 212 to rotate in the direction close to the magnetic block 23. When the position of the magnetic block 23 is fixed, the reset spring 43 makes the clamping block 231 perpendicular to the magnetic block 23, the clamping block 231 abuts against the limiting rod 233 on the limiting plate 232, and the clamping block 231 abuts against the clamping teeth 212, thereby fixing the position of the magnetic block 23, so that the magnetic block 23 does not move due to centrifugal force. When it is necessary to adjust the magnetic block 23 in the direction away from the electromagnet 22, first move the magnetic block 23 in the direction close to the electromagnet 22 to provide space for the rotation of the clamping block 231, and then drive the adjustment chain 42 to move in the direction away from the electromagnet 22 through the electric telescopic rod 41, thereby driving the clamping block 231 to rotate in the direction close to the magnetic block 23, so that there is a gap between the clamping block 231 and the clamping tooth 212, and then adjust the current flow of the electromagnet 22 to adjust the magnetic block 23 in the direction away from the electromagnet 22.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An embroidery machine presser foot driving device, characterized in that: The invention comprises a driving arm (2), wherein a mounting groove (21) is provided in the driving arm (2), an electromagnet (22) is arranged at one end in the mounting groove (21), and a magnetic attraction block (23) is arranged at the other end, the electromagnet (22) is connected to a pressure spring (24), and one end of the pressure spring (24) away from the electromagnet (22) is connected to the magnetic attraction block (23); a clamping block (231) is rotatably connected to the magnetic attraction block (23), a clamping plate (211) is arranged on the side wall of the mounting groove (21), the clamping block (231) is clamped with the clamping plate (211), a rotation adjustment component (4) for controlling the clamping or separation of the clamping block (231) and the clamping plate (211) is connected to the clamping block (231), and a limiting plate (232) for limiting the clamping block (231) is arranged on the magnetic attraction block (23).

2. The embroidery machine presser foot driving device according to claim 1, characterized in that: The clamping plate (211) is a toothed plate, and a clamping tooth (212) is provided on a side of the clamping plate (211) close to the magnetic attraction block (23).

3. The embroidery machine presser foot driving device according to claim 2, characterized in that: The side of the engaging tooth (212) close to the electromagnet (22) is perpendicular to the inner wall of the driving arm (2), and the side away from the electromagnet (22) is arranged obliquely to the driving arm (2).

4. The embroidery machine presser foot driving device according to claim 3, characterized in that: The side of the clamping block (231) close to the electromagnet (22) is inclined, and the side away from the electromagnet (22) is vertically arranged; when the clamping block (231) is clamped with the clamping tooth (212), the vertical surface of the clamping block (231) abuts against the vertical surface of the clamping tooth (212).

5. The embroidery machine presser foot driving device according to claim 1, characterized in that: The rotation adjustment component (4) comprises an electric telescopic rod (41) connected to the magnetic block (23); the electric telescopic rod (41) is arranged on a side of the magnetic block (23) away from the electromagnet (22); an end of the electric telescopic rod (41) away from the magnetic block (23) is connected to an adjustment chain (42); an end of the adjustment chain (42) away from the electric telescopic rod (41) is connected to the clamping block (231); a side of the clamping block (231) close to the magnetic block (23) is connected to a return spring (43); an end of the return spring (43) away from the clamping block (231) is connected to the magnetic block (23).

6. The embroidery machine presser foot driving device according to claim 1, characterized in that: A limit slide groove (26) is provided in the driving arm (2), a limit slide block (234) is connected to the magnetic attraction block (23), and the limit slide block (234) is slidably connected to the limit slide groove (26).

7. The embroidery machine presser foot driving device according to claim 6, characterized in that: A through hole (25) through which the rotation adjustment component (4) can extend is provided on a side of the driving arm (2) away from the electromagnet (22).

8. The embroidery machine presser foot driving device according to claim 4, characterized in that: Both sides of the magnetic attraction block (23) are rotatably connected to the clamping blocks (231), and both sides of the driving arm (2) corresponding to the clamping blocks (231) are connected to the clamping plates (211).

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