CN218226726U

CN218226726U - Safe type pneumatic finger

Info

Publication number: CN218226726U
Application number: CN202221870550.5U
Authority: CN
Inventors: 陈建国
Original assignee: Ningbo Hanhai Machinery Manufacturing Co ltd
Current assignee: Ningbo Hanhai Machinery Manufacturing Co ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2023-01-06
Anticipated expiration: 2032-07-11

Abstract

The utility model relates to a safety pneumatic finger, which comprises a bottom plate and a cylinder fixed on the top of the bottom plate, wherein the cylinder comprises a shell, a piston movably arranged in the shell and a telescopic rod fixed on the piston; the top of the bottom plate is also fixedly provided with a guide seat which is arranged in front of the air cylinder, and the telescopic rod is transversely inserted into the guide seat; the top of the bottom plate is also provided with two clamping jaws which are respectively symmetrically arranged at the left side and the right side of the telescopic rod and the guide seat; the clamping jaw comprises a swinging strip which is rotatably connected to the top of the bottom plate, a clamping plate which is detachably fixed at the front end of the swinging strip and a pulley which is rotatably connected to the rear end of the swinging strip; the utility model discloses even also can possess the clamping function when work takes place to interrupt, and then guarantee throughout that the work piece is in the emergence that the fixed state takes off in order thoroughly to avoid the pine to promoted the security performance by a wide margin and scrapped or equipment damaged in order to prevent the work piece emergence simultaneously.

Description

Safe type pneumatic finger

Technical Field

The utility model relates to a safe type pneumatic finger.

Background

The pneumatic fingers are mainly used for replacing the grabbing work of people and effectively improving the production efficiency; because the power source of the pneumatic finger is pressure gas, when the gas source or the gas valve breaks down, the work of the pneumatic finger is interrupted; therefore, the safety of the existing pneumatic finger is low, once the work of the pneumatic finger is interrupted, the pneumatic finger loses the clamping function, the workpiece is loosened, the workpiece is scrapped if the workpiece is light, the equipment is damaged if the workpiece is heavy, and further improvement is needed.

SUMMERY OF THE UTILITY MODEL

To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that a safe type pneumatic finger that has promoted the security performance in order to prevent simultaneously that the work piece from scrapping or equipment damage takes place is provided by a wide margin.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a safe pneumatic finger comprises a bottom plate and a cylinder fixed on the top of the bottom plate, wherein the cylinder comprises a shell, a piston movably arranged in the shell and a telescopic rod fixed on the piston; the top of the bottom plate is also provided with two clamping jaws which are respectively symmetrically arranged at the left side and the right side of the telescopic rod and the guide seat; the clamping jaw comprises a swinging strip which is rotatably connected to the top of the bottom plate, a clamping plate which is detachably fixed at the front end of the swinging strip, and a pulley which is rotatably connected to the rear end of the swinging strip; in two clamping jaws the rear end upside of swing strip still all is fixed with one and pulls the post, two it still is fixed with reset spring to pull between the post, still outwards be formed with a toper portion on the telescopic link, the front end external diameter of toper portion is less than the rear end external diameter, in two clamping jaws the pulley all compresses tightly respectively on the outer wall of telescopic link or toper portion with the help of reset spring, the rear end of toper portion is formed with straight section of thick bamboo backward, the external diameter of straight section of thick bamboo portion equals with the rear end external diameter of toper portion.

Preferably, the front ends of the clamping plates in the two clamping jaws are both formed with a clamping block towards the inner side, and the end faces of the inner sides of the two clamping blocks are both provided with a groove which is transversely distributed.

Preferably, a microswitch is further fixed at the top of the bottom plate, a moving contact of the microswitch is arranged upwards, a rotatable roller is further connected to the moving contact of the microswitch, and the roller is matched with the outer wall of the straight cylinder portion.

Preferably, the rear end top of the swing strip is formed with a notch, and the pulley is rotatably connected in the notch.

Compared with the prior art, the utility model has the advantages of: the utility model discloses even also can possess the clamping function when work takes place to interrupt, and then guarantee throughout that the work piece is in the emergence that the fixed state takes off in order thoroughly to avoid the pine to promoted the security performance by a wide margin and scrapped or equipment damaged in order to prevent the work piece emergence simultaneously.

Drawings

FIG. 1 is a right front structural view of the present invention;

fig. 2 is a position diagram of the roller of the present invention.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.

As shown in fig. 1-2, a safety pneumatic finger comprises a bottom plate 1 and a cylinder 2 fixed on the top of the bottom plate 1, wherein the cylinder 2 comprises a housing 21, a piston (not shown) movably arranged in the housing 21, and an expansion link 22 fixed on the piston (not shown); when compressed air fills into casing 21 in order drive piston (not shown) reciprocating motion in casing 21, and then drive telescopic link 22 reciprocal telescopic movement, above-mentioned principle is prior art, the utility model discloses a characteristics lie in: a guide seat 8 is further fixed at the top of the bottom plate 1, the guide seat 8 is arranged in front of the air cylinder 2, and the telescopic rod 22 is transversely inserted into the guide seat 8 to ensure the straightness of the telescopic rod 22 during telescopic movement; the top of the bottom plate 1 is also provided with two clamping jaws which are respectively symmetrically arranged at the left side and the right side of the telescopic rod 22 and the guide seat 8; the clamping jaw comprises a swinging strip 3 which is rotatably connected to the top of the bottom plate 1, a clamping plate 4 which is detachably fixed at the front end of the swinging strip 3 and a pulley 6 which is rotatably connected to the rear end of the swinging strip 3; the upper sides of the rear ends of the swing strips 3 in the two clamping jaws are respectively fixed with a traction column 5, a return spring 7 is further fixed between the two traction columns 5, a conical part 221 is further outwards formed on the telescopic rod 22, the outer diameter of the front end of the conical part 221 is smaller than that of the rear end, pulleys 6 in the two clamping jaws are respectively pressed on the outer wall of the telescopic rod 22 or the outer wall of the conical part 221 through the return spring 7, a straight cylinder part 222 is backwards formed at the rear end of the conical part 221, and the outer diameter of the straight cylinder part 222 is equal to that of the rear end of the conical part 221.

The front ends of the clamping plates 4 in the two clamping jaws are respectively provided with a clamping block 41 towards the inner side, and the end faces of the inner sides of the two clamping blocks 41 are respectively provided with a transversely-distributed groove 42.

A microswitch 9 is further fixed at the top of the bottom plate 1, a moving contact of the microswitch 9 is arranged upwards, a rotatable roller 10 is further connected to the moving contact of the microswitch 9, and the roller 10 is matched with the outer wall of the straight cylinder part 222.

A notch 31 is formed at the top of the rear end of the swing bar 3, and the pulley 6 is rotatably connected in the notch 31.

The working principle is as follows: fixing the bottom plate 1 on a manipulator, and operating the manipulator to drive a pneumatic finger to move until the two clamping blocks 41 are respectively positioned at the left side and the right side of the workpiece; in an initial state, the pulleys 6 of the two clamping jaws are attached to the outer wall of the telescopic rod 22 in a rolling mode through the reset spring 7 and are located on the front side of the conical portion 221, when the two clamping blocks 41 are located on the left side and the right side of the workpiece respectively, the telescopic rod 22 is driven to extend outwards to drive the conical portion 221 to move forwards between the two pulleys 6 and roll backwards along the outer wall of the conical portion 221, along with the gradual increase of the outer diameter of the conical portion 221, the distance between the two pulleys 6 is gradually increased, the front ends of the two swing strips 3 are driven to approach each other until the workpiece is tightly embraced through the grooves 42 in the front ends of the swing strips 3, the workpiece is clamped, and then the manipulator can be operated to move the workpiece to a specified position.

Once the cylinder 2 fails and loses pressure, the telescopic rod 22 is out of control and continues to extend forwards, so that the conical part 221 moves to the front sides of the two pulleys 6, the two pulleys 6 are attached to the outer wall of the telescopic rod 22 again through the return spring 7, and the front ends of the two swing strips 3 are opened outwards to enable workpieces to be loosened and fall off, so that the normal processing of the processing is influenced; however, because the utility model discloses be provided with straight section of thick bamboo portion 222, after two pulleys 6 left the outer wall of toper portion 221, can roll immediately on the outer wall of straight section of thick bamboo portion 222, and then make the interval between two pulleys 6 not change to guarantee that the interval between two swing strip 3 front ends also does not change, and then can press from both sides tight work piece all the time in order to avoid the pine to take off.

Meanwhile, when the two pulleys 6 roll on the outer wall of the straight cylinder part 222, the straight cylinder part 222 is located above the roller 10 and presses the movable contact of the microswitch 9 downwards to the bottom by means of the roller 10 to trigger the microswitch 9, and then the microswitch 9 stops the cylinder 2 and quickly informs a maintenance person to maintain the cylinder 2.

The utility model discloses even also can possess the clamping function when work takes place to interrupt, and then guarantee throughout that the work piece is in the emergence that the fixed state takes off in order thoroughly to avoid the pine to promoted the security performance by a wide margin and scrapped or equipment damage's emergence in order to prevent the work piece simultaneously.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A safety pneumatic finger comprises a bottom plate and an air cylinder fixed on the top of the bottom plate, wherein the air cylinder comprises a shell, a piston movably arranged in the shell and a telescopic rod fixed on the piston; the top of the bottom plate is also provided with two clamping jaws which are respectively symmetrically arranged at the left side and the right side of the telescopic rod and the guide seat; the clamping jaw comprises a swinging strip which is rotatably connected to the top of the bottom plate, a clamping plate which is detachably fixed at the front end of the swinging strip, and a pulley which is rotatably connected to the rear end of the swinging strip; in two clamping jaws the rear end upside of swing strip still all is fixed with one and pulls the post, two it still is fixed with reset spring to pull between the post, still outwards be formed with a toper portion on the telescopic link, the front end external diameter of toper portion is less than the rear end external diameter, in two clamping jaws the pulley all compresses tightly respectively on the outer wall of telescopic link or toper portion with the help of reset spring, the rear end of toper portion is formed with straight section of thick bamboo backward, the external diameter of straight section of thick bamboo portion equals with the rear end external diameter of toper portion.

2. The safety pneumatic finger as claimed in claim 1, wherein the front end of the clamping plate of each of the two clamping jaws is formed with a clamping block facing inward, and the inner end faces of the two clamping blocks are respectively provided with a transversely-distributed groove.

3. The safety pneumatic finger as claimed in claim 2, wherein a micro switch is further fixed on the top of the bottom plate, a moving contact of the micro switch is disposed upward, a rotatable roller is further connected to the moving contact of the micro switch, and the roller is matched with the outer wall of the straight cylinder portion.

4. A safety pneumatic finger according to claim 3 wherein the rear end of the swing bar is formed with a notch at the top thereof, and the pulley is rotatably connected in the notch.