CN219075721U

CN219075721U - Pneumatic clamping jaw

Info

Publication number: CN219075721U
Application number: CN202222134738.XU
Authority: CN
Inventors: 饶君芳; 汤荣剑; 张燕; 汤荣丰
Original assignee: Shenzhen Zhixinyun Technology Co ltd
Current assignee: Shenzhen Zhixinyun Technology Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-05-26
Anticipated expiration: 2032-08-12

Abstract

The utility model discloses a pneumatic clamping jaw which comprises a cylinder body, a first clamping jaw, a second clamping jaw, a first piston, a second piston and a return spring, wherein the second clamping jaw is arranged opposite to the first clamping jaw; the middle part of the first clamping jaw is rotationally connected with the cylinder body, and the middle part of the second clamping jaw is rotationally connected with the cylinder body; an air cavity used for communicating an air passage of the compression cylinder and connecting the air passage is arranged in the cylinder body; the first piston and the second piston are arranged in the air cavity; while the first piston is propped against the lower part of the first clamping jaw, and the second piston is propped against the lower part of the second clamping jaw; the upper part of the first clamping jaw is connected with the upper part of the second clamping jaw through a return spring. By adopting the structure, the thinnest thickness of the workpiece which can be clamped can reach 0.01mm, the workpiece is effectively prevented from being clamped and damaged, the roughness of the clamping surface is increased, and the workpiece slipping when the pneumatic clamping jaw clamps the workpiece can be prevented.

Description

Pneumatic clamping jaw

Technical Field

The utility model relates to the technical field of clamping jaws, in particular to a pneumatic clamping jaw.

Background

The pneumatic clamping jaw is a matched part of a clamping type hand part of a mechanical arm, and is used for clamping or grabbing a workpiece by using compressed air as power, so that the pneumatic clamping jaw can be used for grabbing or assembling small parts. In the automated process of the manipulator, the pneumatic clamping jaw is widely applied to clamping and transferring various workpieces. In the prior art, the pneumatic clamping jaw is easy to scratch the workpiece when clamping an ultrathin workpiece (for example, a film with the thickness of 0.01 mm). Moreover, because the workpiece is small or thin, whether the pneumatic clamping jaw clamps the workpiece or not is difficult to judge by naked eyes.

Disclosure of Invention

The utility model aims to disclose a pneumatic clamping jaw, which solves the problem that a film workpiece is easily scratched by the pneumatic clamping jaw in the prior art, and further solves the problem that naked eyes cannot judge whether the workpiece is clamped by the pneumatic clamping jaw.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a pneumatic clamping jaw comprises a cylinder body, a first clamping jaw, a second clamping jaw, a first piston, a second piston and a return spring, wherein the second clamping jaw is arranged opposite to the first clamping jaw; the middle part of the first clamping jaw is rotationally connected with the cylinder body, and the middle part of the second clamping jaw is rotationally connected with the cylinder body; an air cavity used for communicating an air passage of the compression cylinder and connecting the air passage is arranged in the cylinder body; the first piston and the second piston are arranged in the air cavity; while the first piston is propped against the lower part of the first clamping jaw, and the second piston is propped against the lower part of the second clamping jaw; the upper part of the first clamping jaw is connected with the upper part of the second clamping jaw through a return spring.

Further, the middle part of the first clamping jaw is rotationally connected with the cylinder body through a first pin shaft, and the middle part of the second clamping jaw is rotationally connected with the cylinder body through a second pin shaft.

Further, a first clamping head is arranged at the upper part of the first clamping jaw, and a second clamping head is arranged at the upper part of the second clamping jaw; the first chuck and the second chuck are arranged oppositely.

Further, a first buffer pad is attached to the inner surface of the first chuck, and a second buffer pad is attached to the inner surface of the second chuck; the first cushion pad and the second cushion pad are arranged opposite to each other.

Further, the first cushion pad and the second cushion pad are both silica gel pads made of silica gel, or microporous polyurethane foam pads made of microporous polyurethane foam.

Further, the first cushion pad comprises a first cushion body, and first anti-slip convex ribs which are uniformly distributed are arranged on the front surface of the first cushion body.

Further, a first upper tenon and a first lower tenon are arranged on the back surface of the first cushion body; the first upper tenons pass through the first clamping heads and are clamped with the first clamping heads, and the first lower tenons pass through the first clamping heads and are clamped with the first clamping heads.

Further, the optical fiber detecting switch is also included; the first pad body is provided with a pad body through hole, the first chuck is provided with a first chuck through hole, and the pad body through hole and the first chuck through hole are positioned at mutually matched positions; the pad through hole is arranged between the first upper tenons and the first lower tenons; the optical fiber probe of the optical fiber detection switch passes through the first chuck through hole and the pad through hole.

Further, the second cushion pad comprises a second cushion body, second anti-slip convex ribs which are uniformly distributed are arranged on the front surface of the second cushion body, and a second upper tenon and a second lower tenon are arranged on the back surface of the second cushion body; the second upper tenons pass through the second clamping heads and are clamped with the second clamping heads, and the second lower tenons pass through the second clamping heads and are clamped with the second clamping heads.

Further, the connection position of the return spring and the first clamping jaw is arranged below the first clamping head, and the connection position of the return spring and the second clamping jaw is arranged below the second clamping head.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model designs a structure that the first buffer cushion, the second buffer cushion and the optical fiber detection switch are matched with each other, and the thinnest thickness of the workpiece which can be clamped can reach 0.01mm (such as plastic film, aluminum plastic film and paper). The structure that adopts first blotter and second blotter is installed to the surface mounting of first chuck and second chuck is mainly used to prevent to press from both sides the roughness that trails the work piece and increase the holding surface, adopts the structure that is equipped with the first anti-skidding protruding muscle of regular arrangement and second anti-skidding protruding muscle, can prevent that pneumatic clamping jaw from pressing from both sides the work piece slippage when getting the work piece. The optical fiber detection switch is arranged at the chuck position and used for detecting whether a workpiece is clamped or not, and the color of the workpiece can be judged through the optical fiber detection switch so as to judge the material of the workpiece. The present embodiments may be applied to packaging industry, printing industry, new energy manufacturing, robotic application, automation equipment, and the like. The reset of the first chuck and the second chuck is realized through the reset spring, the reset spring is simple in structure, and the reset of the first chuck, the second chuck, the first piston and the second piston can be easily realized through the reset force of the reset spring, so that the first clamping jaw and the second clamping jaw of the pneumatic clamping jaw release a workpiece.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic perspective view of an embodiment of a pneumatic clamping jaw of the present utility model;

FIG. 2 is a schematic front view of FIG. 1;

FIG. 3 is a left side schematic view of FIG. 2;

FIG. 4 is a schematic cross-sectional view of FIG. 3 taken along the direction A-A;

in the figure, 1, a first clamping jaw; 11. a first chuck; 12. a first chuck through hole; 2. a second jaw; 21. a second chuck; 3. a first piston; 4. a second piston; 5. a return spring; 6. a cylinder; 61. an airway; 62. an air cavity; 7. a first pin; 8. a second pin; 9. a first cushion pad; 91. a first pad body; 92. the first anti-slip convex rib; 93. a first upper tenon; 94. a first lower tenon; 95. a pad through hole; 10. a second cushion pad; 101. a second pad body; 102. the second anti-slip convex rib; 103. a second upper tenon; 104. a second lower tenon; 20. an optical fiber detection switch; 201. an optical fiber probe.

Detailed Description

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and are not to indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

The embodiment shown in fig. 1-4 shows a pneumatic clamping jaw, and the pneumatic clamping jaw is mainly used for clamping ultrathin workpieces. The pneumatic clamping jaw of the embodiment comprises a cylinder body 6 for connecting a compression cylinder (not shown), a first clamping jaw 1, a second clamping jaw 2 arranged opposite to the first clamping jaw 1, a first piston 3, a second piston 4 and a return spring 5. The middle part of the first clamping jaw 1 is rotationally connected with the cylinder body 6 through a first pin shaft 7, and the middle part of the second clamping jaw 2 is rotationally connected with the cylinder body 6 through a second pin shaft 8. An air channel 61 for communicating the compression cylinder and an air cavity 62 connected with the air channel 61 are arranged in the cylinder body 6, and the first piston 3 and the second piston 4 are respectively arranged at two sides of the air cavity 62. While the first piston 3 and the second piston 4 are arranged between the lower part of the first jaw 1 and the lower part of the second jaw 2. The inner side of the first piston 3 is connected with the air passage 61, and the outer side of the first piston 3 abuts against the lower part of the first clamping jaw 1. The inner side of the second piston 4 is connected with the air passage 61, and the outer side of the second piston 4 abuts against the lower part of the second clamping jaw 2. The upper part of the first clamping jaw 1 is provided with a first clamping head 11, and the upper part of the second clamping jaw 2 is provided with a second clamping head 21. The first clamping jaw 1 and the second clamping jaw 2 are matched with each other to clamp an ultrathin workpiece (for example, a film with the thickness of 0.01 mm).

One end of the return spring 5 is connected with the upper part of the first clamping jaw 1 and is positioned below the first clamping head 11, and the other end of the return spring 5 is connected with the upper part of the second clamping jaw 2 and is positioned below the second clamping head 21, so that the first clamping head and the second clamping head are reset. In this embodiment, the first chuck 11 and the second chuck 21 are reset by the reset spring 5, the reset spring 5 has a simple structure, and the reset of the first chuck 11, the second chuck 21, the first piston 3 and the second piston 4 can be easily realized by the restoring force of the reset spring 5, so that the first clamping jaw 1 and the second clamping jaw 2 of the pneumatic clamping jaw release the workpiece.

As a further explanation of the present embodiment, the first cushion pad 9 is attached to the inner surface of the first chuck 11, and the second cushion pad 10 is attached to the inner surface of the second chuck 21. In this embodiment, the first cushion 9 and the second cushion 10 are disposed opposite to each other. The first cushion pad 9 and the second cushion pad 10 are both silica gel pads made of silica gel, and can also be microporous polyurethane foam pads made of microporous polyurethane foam. The first cushion pad 9 and the second cushion pad 10 are made of silica gel pad, are soft and comfortable, and have electrical insulation property and resistance property, so that the cushion pad is more suitable for electronic products. The first cushion pad 9 and the second cushion pad 10 are made of microporous polyurethane foam, can be suitable for frame sealing, module protection, hardware support and other preparation, not only has excellent compressibility, slow rebound resilience, moisture resistance and chemical resistance, but also has excellent rebound resilience, can withstand larger force and long-time compression, and has better buffering, sealing, filling and shockproof effects.

In this embodiment, the first cushion pad 9 includes a first cushion body 91, a front surface of the first cushion body 91 is provided with uniformly distributed first anti-slip ribs 92, and a back surface of the first cushion body 91 is provided with a first upper tenon 93 and a first lower tenon 94. The first upper tenons 93 pass through the first chuck 11 and are engaged with the first chuck 11, and the first lower tenons 94 pass through the first chuck 11 and are engaged with the first chuck 11. The first pad 91 is provided with a pad through hole 95, the first chuck 11 is provided with a first chuck through hole 12, and the pad through hole 95 and the first chuck through hole 12 are located at mutually matched positions. The cushion through hole 95 is provided between the first upper tongue 93 and the first lower tongue 94. The present embodiment further includes an optical fiber detection switch 20 disposed outside the first connector. The optical fiber probe 201 of the optical fiber detecting switch 20 passes through the first chuck through hole 12 and the pad through hole 95, and the optical fiber probe 201 is lower than the front surface of the first pad 91. In this embodiment, the optical fiber detection switch is a non-contact circuit switch, which is composed of a light emitting tube, an optical fiber probe, an optical detector, an amplifier and an output indicator lamp, wherein the optical fiber probe is composed of a transmitting optical fiber and a receiving optical fiber, a certain detection space is arranged between the transmitting optical fiber and the receiving optical fiber, and the circuit switch is realized by using an optical path to be on or off in the detection space and through photoelectric conversion. The luminous tubes of the optical fiber detection switch emit light with different colors according to different colors of the workpiece.

The second cushion 10 includes a second cushion body 101, the front surface of the second cushion body 101 is provided with second anti-slip ribs 102 uniformly distributed, and the back surface of the second cushion body 101 is provided with a second upper tenon 103 and a second lower tenon 104. The second upper tenons 103 pass through the second chuck 21 and are engaged with the second chuck 21, and the second lower tenons 104 pass through the second chuck 21 and are engaged with the second chuck 21. In this embodiment, the first chuck 11 and the second chuck 21 are mirror symmetrical. The first anti-slip ribs 92 and the second anti-slip ribs 102 are arranged in a regular arrangement, so that the workpiece can be prevented from slipping when the pneumatic clamping jaw clamps the workpiece.

As a further explanation of the present embodiment, the working principle thereof will be explained: when the air channel 61 and the air cavity 62 are connected with compressed air, the first piston 3 and the second piston 4 at the two sides of the air cavity 62 are displaced from inside to outside, meanwhile, the first piston 3 pushes the lower part of the first clamping jaw 1 and the second piston pushes the lower part of the second clamping jaw 2, meanwhile, the first clamping jaw 1 rotates around the first pin shaft 7 and the second clamping jaw 2 rotates around the second pin shaft 8, and the first clamping head 11 and the second clamping head 21 are closed. When the air passage 61 and the air chamber 62 discharge the compressed air, the first piston 3 and the second piston 4 are reset, and the return spring 5 drives the first jaw 1 and the second jaw 2 to rotate and reset, and simultaneously the first chuck 11 and the second jaw 2 separate and loosen the workpiece.

In this embodiment, the first buffer pad 9 and the second buffer pad 10 are mounted on the surfaces of the first chuck 11 and the second chuck 21, and are mainly used for preventing clamping of a workpiece and increasing of roughness of a clamping surface, and the optical fiber detection switch 20 is mounted at the chuck position for detecting whether the workpiece is clamped or not, and the spring at the chuck position returns when compressed air is disconnected to push the first piston 3 and the second piston 4 in the cylinder to return. The structure that the first cushion pad 9, the second cushion pad 10 and the optical fiber detection switch 20 are mutually matched is designed at the chuck position, the thinnest thickness of the workpiece which can be clamped can reach 0.01mm (such as plastic film, aluminum plastic film and paper), and the color of the workpiece can be judged through the optical fiber detection switch 20. The present embodiments may be applied to packaging industry, printing industry, new energy manufacturing, robotic application, automation equipment, and the like.

As a further improvement to the embodiment, the cylinder body is provided with a pneumatic quick connector, the pneumatic quick connector can be in threaded connection with the air receiving part of the compression cylinder, and the quick connection between the air passage of the cylinder body and the compression cylinder can be realized through the pneumatic quick connector.

Other structures of this embodiment are seen in the prior art.

As a further explanation of the present utility model, the embodiments of the present utility model and the technical features in the embodiments may be combined with each other without conflict. The present utility model is not limited to the above-described embodiments, but, if various modifications or variations of the present utility model are not departing from the spirit and scope of the present utility model, the present utility model is intended to include such modifications and variations as fall within the scope of the claims and the equivalents thereof.

Claims

1. A pneumatic clamping jaw, characterized in that: the device comprises a cylinder body (6), a first clamping jaw (1), a second clamping jaw (2) which is arranged opposite to the first clamping jaw, a first piston (3), a second piston (4) and a return spring (5); the middle part of the first clamping jaw is rotationally connected with the cylinder body, and the middle part of the second clamping jaw is rotationally connected with the cylinder body; an air channel (61) for communicating the compression air cylinder and an air cavity (62) connected with the air channel are arranged in the cylinder body; the first piston and the second piston are arranged in the air cavity; while the first piston is propped against the lower part of the first clamping jaw, and the second piston is propped against the lower part of the second clamping jaw; the upper part of the first clamping jaw is connected with the upper part of the second clamping jaw through a return spring.

2. A pneumatic clamping jaw as claimed in claim 1, wherein: the middle part of first clamping jaw (1) is through first round pin axle (7) swivelling joint cylinder body (6), the middle part of second clamping jaw (2) is through second round pin axle (8) swivelling joint cylinder body.

3. A pneumatic clamping jaw as claimed in claim 1, wherein: the upper part of the first clamping jaw (1) is provided with a first clamping head (11), and the upper part of the second clamping jaw (2) is provided with a second clamping head (21); the first chuck and the second chuck are arranged oppositely.

4. A pneumatic clamping jaw as claimed in claim 3, wherein: a first buffer pad (9) is stuck on the inner surface of the first chuck (11), and a second buffer pad (10) is stuck on the inner surface of the second chuck (21); the first cushion pad and the second cushion pad are arranged opposite to each other.

5. A pneumatic clamping jaw as claimed in claim 4, wherein: the first cushion pad (9) and the second cushion pad (10) are both silica gel pads made of silica gel or microporous polyurethane foam pads made of microporous polyurethane foam.

6. A pneumatic clamping jaw as claimed in claim 4 or 5, wherein: the first cushion pad (9) comprises a first cushion body (91), and first anti-slip convex ribs (92) which are uniformly distributed are arranged on the front surface of the first cushion body.

7. A pneumatic clamping jaw as claimed in claim 6, wherein: the back of the first cushion body (91) is provided with a first upper tenon (93) and a first lower tenon (94); the first upper tenons pass through the first clamping heads (11) and are clamped with the first clamping heads, and the first lower tenons pass through the first clamping heads and are clamped with the first clamping heads.

8. A pneumatic clamping jaw as claimed in claim 7, wherein: also comprises an optical fiber detection switch (20); the first pad body (91) is provided with a pad body through hole (95), the first chuck (11) is provided with a first chuck through hole (12), and the pad body through hole and the first chuck through hole are positioned at mutually matched positions; the pad through hole is arranged between the first upper tenons (93) and the first lower tenons (94); an optical fiber probe (201) of the optical fiber detection switch passes through the first chuck through hole and the pad through hole.

9. A pneumatic clamping jaw as claimed in claim 4 or 5, wherein: the second cushion pad (10) comprises a second cushion body (101), second anti-slip convex ribs (102) which are uniformly distributed are arranged on the front surface of the second cushion body, and a second upper tenon (103) and a second lower tenon (104) are arranged on the back surface of the second cushion body; the second upper tenons pass through the second clamping heads (21) and are clamped with the second clamping heads, and the second lower tenons pass through the second clamping heads and are clamped with the second clamping heads.

10. A pneumatic clamping jaw as claimed in any one of claims 1 to 5, wherein: the connecting position of the reset spring (5) and the first clamping jaw (1) is arranged below the first clamping head (11), and the connecting position of the reset spring and the second clamping jaw (2) is arranged below the second clamping head (21).