Pay-off rack and brake structure thereof

Abstract

The utility model relates to a brake structure which comprises a mounting frame, an elastic brake pad is arranged on the mounting frame, the elastic brake pad comprises a connecting piece, an abutting piece and a driving piece, the connecting piece and the driving piece are fixed to the two ends, away from each other, of the abutting piece, and the connecting piece is arranged on the mounting frame; and the driving piece drives the driving piece to move so as to drive the abutting piece to abut against the main shaft. The driving piece comprises an electric pull rod type electromagnet, a pull shaft of the electric pull rod type electromagnet is connected with a driving piece, and the electric pull rod type electromagnet drives the driving piece to abut against the main shaft. The driving piece drives the driving piece to move so as to drive the abutting piece to abut against the main shaft, so that the main shaft rapidly stops rotating, the braking effect is achieved, too many metal wires are discharged, and therefore production is not prone to being affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sewing equipment accessories, in particular to a pay-off rack and a brake structure thereof. BACKGROUND

[0002] During the production of the lamp strip, the lamp beads and the wires are fixed on the fixed belt, and the fixed belt is usually a gauze fabric with good light transmission. The fixed belt has poor shaping ability. The metal wire is sewn on both sides of the fixed belt width, and the metal wire has a certain toughness and shaping performance. After the lamp strip is bent, the metal wire can be shaped to form a certain shape, thereby improving the appearance and convenience of the lamp strip decoration.

[0003] When the metal wire is wrapped on the fixed belt, the metal wire roller is connected to the main shaft, and the main shaft is rotatably connected to the stand. However, it is found that during use, due to the large mass and inertia of the metal wire roller, when the sewing machine stops, the metal wire roller will continue to rotate due to inertia, resulting in excessive metal wire discharge and disorder, and the metal wire is easy to hook and pull other parts of the sewing machine, affecting production. CONTENT OF THE INVENTION

[0004] In order to solve the problem that the metal wire roller continues to rotate due to inertia when the sewing machine stops, the present application provides a pay-off rack and a brake structure thereof.

[0005] The present application provides a pay-off rack and a brake structure thereof, which adopts the following technical scheme:

[0006] First aspect. The present application provides a brake structure, which adopts the following technical scheme:

[0007] A brake structure, comprising a mounting frame, wherein an elastic brake pad is arranged on the mounting frame, the elastic brake pad comprises a connecting piece, a pressing piece and a driving piece, the connecting piece and the driving piece are fixed to the two ends of the pressing piece away from each other, and the connecting piece is arranged on the mounting frame.

[0008] Further comprising a driving member, the driving member drives the driving piece to move to drive the pressing piece to press against the main shaft.

[0009] By adopting the above technical scheme, the driving member drives the driving piece to move to drive the pressing piece to press against the main shaft, so that the main shaft is quickly stopped from rotating, achieving the brake effect, and preventing excessive metal wire discharge, thereby preventing the production from being affected.

[0010] Optionally, the driving member is fixed to the mounting frame.

[0011] By adopting the above technical scheme, the brake structure is formed as a whole, facilitating overall installation and disassembly.

[0012] Optionally, the driving member comprises an electric pull rod type electromagnet, a pulling shaft of the electric pull rod type electromagnet is connected with the driving piece, and the electric pull rod type electromagnet drives the driving piece to abut against the main shaft.

[0013] By using the above technical scheme, the electric pull rod type electromagnet is used as a driving source, and the reaction is rapid, the volume is small, the cost is low, and the installation is convenient.

[0014] Optionally, a through hole is formed in the driving piece and used for allowing the pulling shaft of the electric pull rod type electromagnet to pass through, and a anti-falling block is arranged at an end of the pulling shaft.

[0015] The driving member further comprises a jack spring sleeved with the pulling shaft, the driving piece is located between the jack spring and the anti-falling block, and the jack spring drives the abutting piece to be separated from the main shaft.

[0016] By using the above technical scheme, the jack spring jacks up the driving piece, so that the driving piece is not easy to contact the main shaft when the main shaft rotates normally, and the main shaft rotates smoothly and is not easy to emit noise.

[0017] Optionally, the abutting piece is arc-shaped, and one side of the abutting piece is recessed and used for abutting against an outer wall of the main shaft.

[0018] By using the above technical scheme, the arc-shaped abutting piece is tightly held by the outer wall of the main shaft, so that the braking effect is improved.

[0019] In a second aspect, the application provides a pay-off stand, which adopts the following technical scheme:

[0020] The pay-off stand comprises a stand, a main shaft rotationally connected with the stand, and the brake structure described above, the mounting frame is fixed to the stand, the main shaft is transversely arranged, the driving piece is located on one side of the main shaft, and the driving member drives the driving piece to move so as to drive the abutting piece to abut against the main shaft.

[0021] By using the above technical scheme, the brake structure is installed, the pay-off stand is convenient for paying off and stopping paying off in time, and the pay-off is not easy to be too much.

[0022] Optionally, a brake elastic ring is sleeved with the main shaft, and the abutting piece abuts against the brake elastic ring to abut against the main shaft.

[0023] By using the above technical scheme, the brake elastic ring improves the braking effect, and protects the main shaft and the abutting piece from being abraded, so that the service life of the brake structure is improved.

[0024] Optionally, a positioning ring groove is arranged on an outer periphery of a middle portion of the brake elastic ring and used for accommodating the abutting piece.

[0025] By adopting the technical scheme, the positioning groove facilitates installation of the abutting piece, the abutting piece is conveniently held on the middle outer wall of the brake elastic ring when the abutting piece brakes, and the braking effect is good.

[0026] To sum up, the present application has at least one of the following beneficial technical effects:

[0027] 1. The driving piece drives the driving piece to move to drive the abutting piece to abut against the main shaft, so that the main shaft is quickly stopped from rotating, the braking effect is achieved, the metal wire is overfed, and thus the production is not easily affected;

[0028] 2. The driving piece is not easily contacted with the main shaft when the driving piece is lifted by the lifting spring, so that the main shaft rotates smoothly and noise is not easily generated;

[0029] 3. The arc-shaped arrangement of the abutting piece makes the outer wall of the main shaft hold tightly, so that the braking effect is improved;

[0030] 4. After the wire rack is installed with the brake structure, the wire rack facilitates wire feeding and timely stopping of wire feeding, so that the wire is not easily overfed, and the brake structure is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic view of the overall structure of the brake structure of the embodiment.

[0032] Figure 2 is a schematic view of the overall structure of the wire rack of the embodiment.

[0033] Figure 3 is a structure display view of the brake elastic ring.

[0034] The reference signs are as follows: 1, mounting rack; 2, elastic brake piece; 21, connecting piece; 22, abutting piece; 23, driving piece; 3, driving piece; 31, electric pull rod type electromagnet; 32, anti-dropping block; 33, lifting spring; 4, main shaft; 5, stand; 51, bearing; 6, mounting metal wire roller; 7, brake elastic ring; 71, positioning ring groove; 8, pulling shaft. DETAILED DESCRIPTION

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] The present application discloses a brake structure. Referring to Figure 1 , the brake structure comprises a mounting rack 1, the top of the mounting rack 1 is fixed with an elastic brake piece 2, the elastic brake piece 2 comprises an integrally formed connecting piece 21, an abutting piece 22 and a driving piece 23, the connecting piece 21 and the driving piece 23 are fixed to the two ends of the abutting piece 22 away from each other, and the connecting piece 21 is fixed to the mounting rack 1 by a bolt.

[0037] Referring to Figure 1 , Figure 2, the main shaft 4 is located below the abutting piece 22, the elastic brake piece 2 is a thin-walled metal piece as a whole and has a certain elasticity. The abutting piece 22 is arc-shaped, the concave side of the abutting piece 22 is the bottom of the abutting piece 22, and the concave side of the abutting piece 22 is used to abut against the outer wall of the main shaft 4, so that the holding effect of the elastic brake piece 2 on the main shaft 4 is improved during braking, and thus the braking efficiency is improved.

[0038] With reference to Figure 1 , Figure 2 , the brake structure further comprises a driving piece 3, the driving piece 3 drives the driving piece 23 to move to drive the abutting piece 22 to abut against the main shaft 4. The driving piece 3 comprises an electric pull rod type electromagnet 31, an anti-falling block 32 and a jacking spring 33. The electric pull rod type electromagnet 31 is fixed to the mounting frame 1, and the pulling shaft 8 of the electric pull rod type electromagnet 31 is located on the side of the main shaft 4 away from the connecting piece 21. The pulling shaft 8 of the electric pull rod type electromagnet 31 penetrates the driving piece 23, the driving piece 23 is provided with a through hole for the pulling shaft 8 of the electric pull rod type electromagnet 31 to penetrate, and the electric pull rod type electromagnet 31 pulls the driving piece 23 downward to drive the driving piece 23 to abut against the main shaft 4.

[0039] With reference to Figure 1 , the anti-falling block 32 is fixed to the end of the pulling shaft 8, the jacking spring 33 is sleeved on the pulling shaft 8, the driving piece 23 is located between the jacking spring 33 and the anti-falling block 32, and the jacking spring 33 jacks up the driving piece 23, so that the abutting piece 22 is kept away from the main shaft 4, and the abutting piece 22 is not easy to contact the main shaft 4 during rotation of the main shaft 4 and is not easy to make noise.

[0040] The implementation principle of the brake structure in the embodiment of the application is that the electric pull rod type electromagnet 31 drives the driving piece 23 to move downward to drive the abutting piece 22 to abut against the main shaft 4, so that the main shaft 4 is quickly stopped from rotating, the braking effect is achieved, the metal wire is not overfed, and thus the production is not affected.

[0041] The embodiment of the application further discloses a pay-off stand, with reference to Figure 2 , the pay-off stand comprises a stand 5, a main shaft 4 rotationally connected to the stand 5 through a bearing 51, and the brake structure described above is further used. The mounting frame 1 is fixed to the stand 5 through bolts. The axis of the main shaft 4 is transverse, and the main shaft 4 penetrates the stand 5. The end of the main shaft 4 located on one side of the stand 5 is used to mount a metal wire roller 6, and the end of the main shaft 4 located on the other side of the stand 5 is connected to the brake structure.

[0042] With reference to Figure 2 , the driving piece 23 is located at the top of the main shaft 4, and the electric pull rod type electromagnet 31 drives the driving piece 23 to move downward to drive the abutting piece 22 to abut against the main shaft 4 after being pressed downward.

[0043] With reference to Figure 2 、 Figure 3The end of the brake structure connected with the main shaft 4 is sleeved with a brake elastic ring 7, the brake elastic ring 7 is a rubber ring, a positioning ring groove 71 for accommodating an abutting piece 22 is formed in the middle outer periphery of the brake elastic ring 7, the abutting piece 22 is located in the positioning ring groove 71, and the abutting piece 22 abuts against the groove bottom wall of the positioning ring groove 71 to tightly hold the main shaft 4.

[0044] The implementation principle of the wire reel of the embodiment of the application is as follows: after the brake structure is installed on the wire reel, the wire reel is convenient for wire paying-off and timely stopping of wire paying-off, and when a wire reel such as a metal wire reel is paid off, too much wire paying-off is not easy, and the use is convenient. The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A brake structure characterized by: The brake structure comprises a mounting frame (1) provided with an elastic brake pad (2), the elastic brake pad (2) comprises a connecting piece (21), an abutting piece (22) and a driving piece (23), the connecting piece (21) and the driving piece (23) are fixed to the two ends of the abutting piece (22) away from each other, and the connecting piece (21) is arranged on the mounting frame (1). The brake structure further comprises a driving member (3) for driving the driving piece (23) to move so as to drive the abutting piece (22) to abut against the main shaft (4).

2. The brake structure according to claim 1, characterized in that: The driving member (3) is fixed to the mounting frame (1).

3. The brake structure according to claim 1, wherein: The driving member (3) comprises an electric pull rod electromagnet (31), a pulling shaft (8) of the electric pull rod electromagnet (31) is connected to the driving piece (23), and the electric pull rod electromagnet (31) drives the driving piece (23) to abut against the main shaft (4).

4. The brake structure according to claim 3, wherein: A through hole is formed in the driving piece (23) for the pulling shaft (8) of the electric pull rod electromagnet (31) to pass through, and a anti-falling block (32) is arranged at the end of the pulling shaft (8). The driving member (3) further comprises a jacking spring (33) sleeved on the pulling shaft (8), the driving piece (23) is located between the jacking spring (33) and the anti-falling block (32), and the jacking spring (33) drives the abutting piece (22) to separate from the main shaft (4).

5. The brake structure according to claim 1, wherein: The abutting piece (22) is arc-shaped, and the abutting piece (22) is recessed on one side and abuts against the outer wall of the main shaft (4).

6. A reel stand comprising an upright stand (5), a main shaft (4) rotatably connected to the upright stand (5), characterized in that: The brake structure of any one of claims 1-5 is further applied, the mounting frame (1) is fixed to a vertical frame (5), the main shaft (4) is transversely arranged, the driving piece (23) is located on one side of the main shaft (4), and the driving member (3) drives the driving piece (23) to move so as to drive the abutting piece (22) to abut against the main shaft (4).

7. The reel stand of claim 6, wherein: The main shaft (4) is sleeved with a brake elastic ring (7), and the abutting piece (22) abuts against the brake elastic ring (7) to abut against the main shaft (4).

8. The reel stand of claim 7, wherein: The brake elastic ring (7) is provided with a positioning ring groove (71) for accommodating the abutting piece (22) on the outer periphery of the middle part.

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