Pneumatic shearing device

Abstract

The utility model discloses a kind of pneumatic scissors devices, it is related to textile production technical field, above-mentioned pneumatic scissors devices include mounting seat, fork, scissors moving piece and driving assembly, the mounting seat is fixed with scissors static piece, the fork is rotatably installed in mounting seat, the fork includes driving part and mounting part, the driving part and mounting part are preset angle, the scissors moving piece is installed in mounting part, the fork is moved when rotating, and scissors moving piece is driven to scissors static piece, the driving assembly includes cylinder and reset piece, the cylinder and reset piece are divided into located driving part both sides, and all are installed in mounting seat, the cylinder is equipped with gas pipe joint, single cylinder is used, and driving scissors device can be completed to complete shearing action, reduce a gas source, and scissors always open state is the action of reset piece limiting fork, greatly improve energy-saving effect.

Description

Technical Field

[0001] This utility model relates to the field of textile production technology, and more specifically, to a pneumatic scissor device. Background Technology

[0002] In textile production, the weft-pulling process is a crucial step in weaving preparation. Its purpose is to extract the weft yarn from the weft hole when the weft is broken, so it can be used by the loom. Traditionally... Weft removal Most devices use mechanical scissors to cut the weft yarn, which has problems such as low cutting accuracy, slow response speed, high noise, and high maintenance costs.

[0003] In recent years, with the development of textile machinery towards higher speeds and greater automation, pneumatic technology has been gradually applied in the textile machinery field. Pneumatic scissor devices, with their advantages of simple structure, rapid action, and ease of control, have found some application in the weft-drawing process of textile machines.

[0004] However, when using pneumatic scissor devices, the moving scissor blades rely on the elasticity of the spring plate to contact the stationary scissor blades. Since it is a plane-to-plane contact, the working environment in textile workshops is prone to lint sticking, which can cause the two planes to not fit well, resulting in yarn cutting failure. In addition, two air channels are required to drive two pistons to open and close the scissors. The air channel structure is complicated, which wastes gas flow and is not conducive to energy saving.

[0005] In summary, how to provide a pneumatic scissor device that is stable in use and energy-efficient is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a pneumatic scissor device that improves the stability of scissors during cutting, reduces wear on parts, and minimizes energy waste.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A pneumatic scissor device, comprising:

[0009] Mounting base, on which a scissor blade is fixed;

[0010] A shift fork is rotatably mounted on the mounting base. The shift fork includes a driving part and a mounting part, which are arranged at a preset angle.

[0011] A movable scissor blade is mounted on the mounting part, and when the fork rotates, it drives the movable scissor blade to move towards the stationary scissor blade;

[0012] A drive assembly, comprising a cylinder and a reset component, wherein the cylinder and the reset component are respectively located on both sides of the drive unit and are both mounted on the mounting base, and the cylinder is provided with an air pipe connector.

[0013] Furthermore, the driving component further includes:

[0014] A piston is slidably mounted inside the cylinder. When the piston moves toward the drive unit, it pushes the drive unit toward the reset member.

[0015] Furthermore, in this invention, the reset component is made of a material or spring with elastic deformation function.

[0016] Furthermore, the cylinder is provided with at least one pressure relief port, and a damping valve is installed at the pressure relief port.

[0017] Furthermore, a shock-absorbing component is provided between the air pipe connector and the cylinder in this utility model.

[0018] Furthermore, this utility model also includes:

[0019] A clamping member is installed on the mounting part, and the movable scissor blade is installed on the clamping member, which makes the movable scissor blade and the stationary scissor blade fit tightly together.

[0020] Furthermore, in this utility model, the clamping member is a plate-shaped structure, and both the clamping member and the mounting part are provided with hinge holes. The clamping member is provided with at least two mounting holes and at least two positioning holes. The scissor moving piece is fixed to the clamping member through the mounting holes, and the clamping member and the shift fork are mounted on the mounting base through a rotating shaft.

[0021] Furthermore, in this invention, the clamping member is a bent member that is inclined toward the scissor blade.

[0022] Furthermore, the clamping member is provided with at least two positioning posts, which are in contact with the shear moving piece.

[0023] Furthermore, in this invention, the positioning post is a frustum structure.

[0024] The pneumatic scissor device provided by this utility model, in use, involves mounting the stationary scissor blade and the shift fork on a mounting base. The shift fork is rotatably mounted and includes a driving part and a mounting part, which are at a preset angle. When the driving part of the shift fork is pushed by an external force, it rotates as a whole. The moving scissor blade is mounted on the mounting part, and when the shift fork rotates, it drives the moving scissor blade to move towards the stationary scissor blade. It also includes a driving assembly mounted on the mounting base, which includes a cylinder and a reset component. The cylinder and reset component are located on opposite sides of the driving part and are both mounted on the mounting base. The cylinder has an air pipe connector, which is connected to a high-pressure air source. The assembled device is then mounted on the automatic weft-drawing device of an air-jet loom. In other words, when the high-pressure air source is activated, the device will automatically draw the weft. After the compressed gas enters the cylinder, it pushes the drive unit, causing it to move towards the reset component. This, in turn, moves the moving scissor blade towards the stationary scissor blade, completing the shearing action. Then, the high-pressure gas supply stops, and the cylinder loses its support. At this point, the reset component pushes the drive unit to reset, thereby controlling the moving scissor blade to reset, opening the scissor device. The moving scissor blade is mounted on the mounting base via a fork. This design minimizes wear during operation, increasing the service life of the parts. A single cylinder is used to drive the scissor device to complete the shearing action, reducing the need for a separate air source and simplifying the structure. Furthermore, in the normally open state, the reset component restricts the movement of the fork, and the cylinder is not ventilated. Therefore, this design significantly shortens the ventilation time, resulting in more significant energy savings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the axial structure of the entire assembly and in use provided by this utility model;

[0027] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0028] Figure 3 This is a side view of the overall structure of the present invention during installation and use.

[0029] Figure 4 A front view of the overall installation and use of this utility model;

[0030] Figure 5 This is a structural schematic diagram of the front cross-section of the entire installation and use of this utility model.

[0031] Figure 6This is a structural schematic diagram of the side of the scissor blade and pre-tightening component provided by this utility model;

[0032] Figure 7 This is a schematic diagram of the axial structure of the shear blade and pre-tightening component provided by this utility model.

[0033] Figures 1-7 In the accompanying drawings, the reference numerals include:

[0034] Mounting base 1, stationary scissor blade 2, shift fork 3, drive unit 301, mounting unit 302, moving scissor blade 4, drive assembly 5, cylinder 501, piston 502, reset component 503, shock absorber 504, clamping component 6, positioning hole 7, positioning pin 8, hinge hole 9, air pipe connector 10. Detailed Implementation

[0035] 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.

[0036] The core of this invention is to provide a pneumatic scissor device that improves the stability of scissors during cutting, reduces wear on parts, and minimizes energy waste.

[0037] Please refer to Figures 1-7 A pneumatic scissor device includes a mounting base 1, a fork 3, a movable scissor blade 4, and a drive assembly 5. A stationary scissor blade 2 is fixed on the mounting base 1. The fork 3 is rotatably mounted on the mounting base 1. The fork 3 includes a drive section 301 and a mounting section 302, which are at a preset angle. The movable scissor blade 4 is mounted on the mounting section 302. When the fork 3 rotates, it drives the movable scissor blade 4 to move towards the stationary scissor blade 2. The drive assembly 5 includes a cylinder 501 and a reset component 503, located on opposite sides of the drive section 301 and both mounted on the mounting base 1. The cylinder 501 is equipped with an air pipe connector 10.

[0038] It should be noted that the mounting base 1 in this embodiment of the present invention can be of any shape. Specifically, the mounting base 1 is a plate-shaped structure, and the mounting base 1 is provided with a plurality of mounting holes for fixing the cylinder 501, the scissors and the fork 3.

[0039] In addition, the preset angle between the driving part 301 and the mounting part 302 in this embodiment of the present invention is an acute angle or a right angle.

[0040] Optionally, in some embodiments, the shear blade 2 is fixed to the mounting base 1 by bolts.

[0041] In addition, the gas pipe connector 10 in this embodiment of the present invention is a high-pressure gas connector.

[0042] In use, the stationary scissor blade 2 and the shift fork 3 are installed on the mounting base 1. The shift fork 3 is rotatably mounted and includes a drive part 301 and a mounting part 302. The drive part 301 and the mounting part 302 are at a preset angle. When the drive part 301 of the shift fork 3 is pushed by an external force, it rotates as a whole. The moving scissor blade 4 is mounted on the mounting part 302. When the shift fork 3 rotates, it drives the moving scissor blade 4 to move toward the stationary scissor blade 2. The device also includes a drive assembly 5 mounted on the mounting base 1, which includes a cylinder 501 and a reset member 503. The cylinder 501 and the reset member 503 are located on both sides of the drive part 301 and are both mounted on the mounting base 1. The cylinder 501 is equipped with an air pipe connector 10, which is connected to a high-pressure air source. The assembled device is then installed on the automatic weft-drawing device of the air-jet loom. When high-pressure gas enters cylinder 501, it pushes drive unit 301 to move towards reset component 503, thereby causing scissor blade 4 to move towards scissor blade 2, completing the shearing action. Then, the high-pressure gas supply stops, cylinder 501 loses support, and the reset component pushes drive unit 301 to reset, thereby controlling scissor blade 4 to reset, causing the scissor device to open. Scissor blade 4 is mounted on mounting base 1 via fork 3. This design minimizes wear during operation, extending the service life of parts. A single cylinder 501 is sufficient to drive the scissor device to complete the shearing action, reducing the number of air sources and simplifying the structure. Furthermore, in the normally open state of the scissors, reset component 503 restricts the movement of fork 3, and cylinder 501 is not ventilated. Therefore, this design significantly shortens the venting time, resulting in more significant energy savings.

[0043] Please refer to Figures 1-7 In some embodiments, the drive assembly 5 further includes a piston 502, which is slidably mounted on the cylinder 501. When the piston 502 moves toward the drive part 301, it pushes the drive part 301 to move toward the reset member 503. That is, a piston 502 is provided in the cylinder 501. When the cylinder 501 enters high-pressure gas, it pushes the piston 502 to move toward the drive part 301. The piston 502 is used to push the drive part 301 to move.

[0044] Optionally, in some embodiments, a connecting rod is hinged to the piston 502, and the other end of the connecting rod is hinged to the drive unit 301. The connecting rod helps to increase the stability of the contact between the piston 502 and the drive unit 301, ensuring that the movement of the piston 502 can drive the drive unit 301 to move.

[0045] Please refer to Figures 1-7In some embodiments, the reset member 503 is made of a material or spring with elastic deformation function. That is, the drive part 301 is reset by using a material with elastic deformation function, or by using a spring to push the drive part 301 to reset.

[0046] Optionally, in some embodiments, spring steel may be used. Specifically, the spring steel is folded into a Z-shaped structure, and the drive unit 301 is reset by the deformation function of the spring steel.

[0047] In other embodiments, deformable materials such as rubber or silicone can be used. Specifically, the reset member 503 is a columnar structure and is placed on the side of the drive unit 301 away from the cylinder 501. When it is deformed, the drive unit 301 is pushed to reset by the deformation function of the deformable material such as rubber or silicone.

[0048] In other embodiments, an air cushion structure may be used. Specifically, an air cushion made of a sealed soft material in the shape of a column or sphere is filled with air. When it is compressed, the internal air pushes the drive unit 301 to reset.

[0049] Optionally, in some embodiments, the cylinder 501 is provided with at least one pressure relief port. The pressure relief port helps to reduce resistance when the reset member 503 pushes the drive unit 301 to reset. A damping valve is installed at the pressure relief port. The damping valve can reduce the thrust on the piston 502 when it is reset, thereby avoiding the vibration generated by the reset member 503 pushing the drive unit 301 to reset, which is beneficial to extending the service life of the device.

[0050] In other embodiments, the diameter of the pressure relief port on cylinder 501 can be reduced to achieve a damping effect.

[0051] In some other embodiments, a buffer can be installed inside the cylinder 501. When the piston 502 is pushed into contact with the buffer by the reset member 503, it plays a buffering role to reduce the vibration of the piston 502 impact.

[0052] In the above embodiments, the buffer is made of rubber or silicone.

[0053] Optionally, in some embodiments, a shock absorber 504 is provided between the air pipe connector 10 and the cylinder 501. The shock absorber 504 can further reduce the damage caused by the vibration of the cylinder 501 to the air pipe connector 10, and at the same time reduce the occurrence of loosening of the connector position.

[0054] Optionally, in some embodiments, the shock absorber 504 employs a rubber sealing ring.

[0055] Please refer to Figures 1-7In some embodiments, a clamping member 6 is also included. The clamping member 6 is installed on the mounting part 302, and the scissor moving piece 4 is installed on the clamping member 6. The clamping member 6 makes the scissor moving piece 4 and the scissor stationary piece 2 stick together. That is, by clamping the scissor moving piece 4 and the scissor stationary piece 2 together through the clamping member 6, it is made to have a certain pre-tightening force, which helps to improve its cutting effect.

[0056] Alternatively, in some embodiments, the clamping member 6 may be made of a material with elastic deformation function, such as spring steel.

[0057] Optionally, in some embodiments, the clamping member 6 is a plate-shaped structure. Both the clamping member 6 and the mounting part 302 are provided with hinge holes 9. The clamping member 6 is provided with at least two mounting holes and positioning holes 7. The scissor moving piece 4 is fixed to the clamping member 6 through the mounting holes. The clamping member 6 and the shift fork 3 are mounted on the mounting base 1 through a rotating shaft. That is, the plate-shaped clamping member 6 is mounted on the shift fork 3. During installation, the hinge holes 9 of the clamping member 6 are aligned with the hinge holes 9 of the mounting part 302, and it is mounted on the mounting base 1 by bolts or riveting. At the same time, the mounting part 302 of the shift fork 3 is provided with two limiting posts. The two positioning holes 7 on the clamping member 6 are matched with the two limiting posts on the shift fork 3. Through three-point positioning, the pre-tightening member is fixed to the shift fork 3. At the same time, the pre-tightening member is provided with two mounting holes. The scissor moving piece 4 is fixed to the two mounting holes by bolts, thereby realizing the fixed connection between the scissor moving piece 4 and the shift fork 3.

[0058] Optionally, in some embodiments, in order to reduce wear during the rotation of the shift fork 3, a bearing is provided at the hinge hole 9 of the clamping member 6 and the mounting part 302, and the outer ring of the bearing is interference-fitted with the hinge hole 9. A rivet bolt is fixed by the inner ring of the bearing. The bearing reduces the wear during the rotation of the shift fork 3, thereby increasing its service life.

[0059] In the above embodiment, a fixed baffle is fixed to one end of the bearing, while a movable baffle is installed at the other end of the bearing. The movable baffle fixes the position of the clamping member 6 and the shift fork 3 to prevent them from falling off.

[0060] To ensure a stronger adhesion between the moving scissor blade 4 and the stationary scissor blade 2, and to prevent poor contact between the two surfaces due to lint adhering to them, thus avoiding cutting failures, in some embodiments, the clamping member 6 is a bent member inclined towards the stationary scissor blade 2. That is, the clamping member 6 is bent at a certain angle towards the stationary scissor blade 2. Therefore, during cutting, the moving scissor blade 4 and the stationary scissor blade 2 always maintain contact, preventing poor contact due to lint, greatly improving the cutting effect and ensuring effective cutting. Furthermore, the clamping member 6 is made of an elastic material, which further increases the adhesion between the moving scissor blade 4 and the stationary scissor blade 2. Also, by only bending the clamping member 6, the operation of the moving scissor blade 4 is avoided, extending its service life.

[0061] Optionally, in some embodiments, the bending angle of the pretensioner is selected according to the actual situation.

[0062] Please refer to Figures 1-7 In some embodiments, the clamping member 6 is provided with at least two positioning posts 8, which are in contact with the scissor blade 4. The positioning posts 8 are used to further fix the scissor blade 4 and prevent it from loosening after long-term use.

[0063] Optionally, in some embodiments, the positioning post 8 is a frustum structure with a smaller upper part and a larger lower part. Therefore, when the scissor blade 4 is inserted into the positioning post 8, it is locked and fixed to the mounting part 302 by bolts. At this time, the contact part between the scissor blade 4 and the positioning post 8 has the effect of increasing its pre-tightening force, which is beneficial to improving the fixing firmness of the scissor blade 4.

[0064] In other words, the key point of this utility model embodiment is that a single cylinder 501 is used as the driving source, in conjunction with a reset component 503. When high-pressure gas enters the cylinder 501, it pushes the driving part 301 to move towards the reset component 503, thereby causing the moving scissor blade 4 to move towards the stationary scissor blade 2, completing the shearing action. Then, the high-pressure gas supply stops, and the cylinder 501 loses its support. At this time, the reset component pushes the driving part 301 to reset, thereby controlling the moving scissor blade 4 to reset, so that the scissor device opens. The moving scissor blade 4 is mounted on the mounting base 1 via the fork 3. The wear during operation is small, increasing the service life of the parts. A single cylinder 501 can complete the driving of the scissor device to complete the shearing action, reducing one air source and simplifying the structure. Furthermore, in the normally open state of the scissors, the reset component 503 restricts the movement of the fork 3, and the cylinder 501 is not ventilated. Therefore, this design greatly shortens the ventilation time and has a more significant energy-saving effect.

[0065] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0066] The pneumatic scissor device provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A pneumatic scissor device, characterized in that, include: Mounting base (1), on which a scissor blade (2) is fixed; A shift fork (3) is rotatably mounted on the mounting base (1). The shift fork (3) includes a driving part (301) and a mounting part (302). The driving part (301) and the mounting part (302) are arranged at a preset angle. The scissor blade (4) is mounted on the mounting part (302). When the fork (3) rotates, it drives the scissor blade (4) to move toward the scissor blade (2). The drive assembly (5) includes a cylinder (501) and a reset member (503). The cylinder (501) and the reset member (503) are located on both sides of the drive unit (301) and are both mounted on the mounting base (1). The cylinder (501) is provided with an air pipe connector (10).

2. The pneumatic scissor device according to claim 1, characterized in that, The driving component (5) also includes: The piston (502) is slidably mounted in the cylinder (501). When the piston (502) moves toward the drive unit (301), it pushes the drive unit (301) to move toward the reset member (503).

3. A pneumatic scissor device according to claim 2, characterized in that, The reset component (503) is made of a material or spring with elastic deformation function.

4. A pneumatic scissor device according to claim 1, characterized in that, The cylinder (501) is provided with at least one pressure relief port, and a damping valve is installed at the pressure relief port.

5. A pneumatic scissor device according to claim 4, characterized in that, A shock absorber (504) is provided between the air pipe connector (10) and the cylinder (501).

6. A pneumatic scissor device according to any one of claims 1-5, characterized in that, Also includes: A clamping member (6) is installed on the mounting part (302), and the scissor moving piece (4) is installed on the clamping member (6). The clamping member (6) makes the scissor moving piece (4) and the scissor stationary piece (2) fit tightly together.

7. A pneumatic scissor device according to claim 6, characterized in that, The clamping member (6) is a plate-shaped structure. Both the clamping member (6) and the mounting part (302) are provided with hinge holes (9). The clamping member (6) is provided with at least two mounting holes and at least two positioning holes (7). The scissor moving piece (4) is fixed to the clamping member (6) through the mounting holes. The clamping member (6) and the fork (3) are mounted on the mounting base (1) through a rotating shaft.

8. A pneumatic scissor device according to claim 7, characterized in that, The clamping member (6) is a bent member that is inclined toward the shear plate (2).

9. A pneumatic scissor device according to claim 8, characterized in that, The clamping member (6) is provided with at least two positioning posts (8), which are in contact with the shear moving piece (4).

10. A pneumatic scissor device according to claim 9, characterized in that, The positioning column (8) is a frustum structure.

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