CN218193887U

CN218193887U - Pneumatic clamp

Info

Publication number: CN218193887U
Application number: CN202222119045.3U
Authority: CN
Inventors: 李绍林; 陈丹; 胡勇华; 吴清本
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-01-03
Anticipated expiration: 2032-08-12

Abstract

A pneumatic clamp comprises a base, wherein a fixed seat is arranged on the base, a fixed pressing block, a driving device and a movable pressing block are fixedly connected to the fixed seat, the driving device is used for driving the movable pressing block to move towards the fixed pressing block so as to clamp a workpiece, and the base is connected with the fixed seat in a sliding manner; an elastic reset assembly is arranged between the base and the fixing seat and used for driving the fixing seat to reversely slide after the fixing seat slides on the base. Compared with the existing pneumatic clamp, the utility model discloses a pneumatic clamp can press from both sides tightly, the fixed work piece that warp to can guarantee the machining precision of work piece, in addition, elasticity reset assembly can clip the product along with the deformation of product, makes the product fixed under the natural deformation condition, can also drive the fixing base and slide initial position after the work piece is accomplished in processing, and this makes anchor clamps need not the relocation, guarantees the availability factor efficiency of anchor clamps, thereby can improve the machining efficiency of work piece.

Description

Pneumatic clamp

Technical Field

The utility model relates to the technical field of machinery, concretely relates to pneumatic fixture.

Background

Currently, existing clamps are fixedly attached to a work platform, which can clamp a workpiece. However, if some workpieces are deformed (e.g., the workpieces to be clamped are laterally shifted or twisted at a small angle), the pneumatic clamp cannot be aligned with the workpieces well, so that the pneumatic clamp cannot clamp or clamp the workpieces, which is not favorable for processing the workpieces.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome not enough in the background art, provide a pneumatic fixture that can press from both sides tight deformation work piece.

In order to achieve the above object, the technical solution of the present invention is as follows.

A pneumatic clamp comprises a base, wherein a fixed seat is arranged on the base, a fixed pressing block, a driving device and a movable pressing block are fixedly connected to the fixed seat, the driving device is used for driving the movable pressing block to move towards the fixed pressing block so as to clamp a workpiece,

the base is connected with the fixed seat in a sliding way; an elastic reset assembly is arranged between the base and the fixing seat and used for driving the fixing seat to reversely slide after the fixing seat slides on the base.

Further, the elastic reset assembly comprises a first support arranged on the base, a sliding rod fixedly connected to the first support, an elastic piece sleeved on the sliding rod, and a transmission piece slidably connected to the sliding rod and abutted to the elastic piece on two sides, the sliding direction of the sliding rod and the sliding direction of the fixing seat are arranged in the same direction, and the transmission piece is fixedly connected to the fixing seat relative to the other end of the elastic piece.

Furthermore, the other end of the transmission piece, which is opposite to the elastic piece, is provided with a first connecting hole, and the transmission piece is connected with the fixed seat through the first connecting hole and the bolt; the first connection hole has a movable space.

Further, the elastic part is a compression spring.

Furthermore, a guide rail is arranged on the base, and a guide groove corresponding to the guide rail is arranged at the bottom of the fixing seat.

Furthermore, an accommodating cavity is formed in the fixing seat, a communicating hole communicated with the accommodating cavity is formed in the top of the fixing seat, a second connecting hole communicated with the accommodating cavity is formed in the side, away from the fixed pressing block, of the fixing seat, and the driving device is fixedly connected to the side, away from the fixed pressing block, of the fixing seat;

the containing cavity is internally provided with a pressing rod hinged with the fixing seat, the two ends of the pressing rod are respectively provided with a connecting end and a pressing end, the connecting end is connected with the driving device, and the pressing end is the movable pressing block.

Furthermore, the position where the compression bar is hinged with the fixed seat is a first position, and the distance from the connecting end to the first position is greater than the distance from the pressing end to the first position.

The fixing seat is made of aluminum or steel.

Compared with the prior art, the beneficial effects of the utility model are that: firstly, the fixing seat can be connected to the base in a sliding mode, when a deformed workpiece needs to be clamped, the fixing seat can slide towards the deformed side of the workpiece, then the workpiece is clamped and fixed through the fixed pressing block and the movable pressing block, the deformed workpiece can be clamped and fixed under the original deformation condition, and therefore the product is guaranteed to be fixedly processed under the natural (original) deformation condition, and the original state is kept after the product is taken down. In addition, when a workpiece is machined, the elastic resetting component can drive the fixed seat to slide to the initial position after the workpiece is detached, so that the clamp does not need to be repositioned, the use efficiency of the clamp is ensured, and the machining efficiency of the workpiece can be improved. The pneumatic clamp has simple structure, is convenient to produce and assemble, and is beneficial to reducing the production cost.

Drawings

FIG. 1 is a perspective view of a pneumatic clamp of the present invention;

FIG. 2 is a perspective view of the pneumatic clamp without the anchor block;

FIG. 3 is a perspective view of the anchor block;

FIG. 4 is a schematic view of a state in which a pneumatic jig machines a workpiece;

a base 1; a guide rail 11; a fixed seat 2; a guide groove 21; a housing chamber 22; a communication hole 23; a second connecting hole 24; a pressure lever 3; a connection end 31; a pressing end 32; a fixed pressing block 4; an elastic reset component 5; a first holder 51; a slide bar 52; the elastic member 53; a transmission member 54; a first connection hole 541; a drive device 6; a workpiece 7.

Detailed Description

In the description of the present invention, it is to be understood that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The technical solution of the present invention will be further explained with reference to the accompanying drawings 1-4.

A pneumatic clamp comprises a base 1, wherein a guide rail 11 is fixedly connected to the base 1, a fixed seat 2 is arranged on the base 1, a guide groove 21 corresponding to the guide rail 11 is arranged at the bottom of the fixed seat 2, and the fixed seat 2 can slide on the base 1 through the guide rail 11 and the guide groove 21. The fixing seat 2 is fixedly connected with a fixed pressing block 4, a driving device 6 and a movable pressing block which is movably connected, and the driving device 6 is a telescopic cylinder and is used for driving the movable pressing block to move towards the fixed pressing block 4 so as to clamp a workpiece. Be equipped with elasticity reset assembly 5 between base 1 and the fixing base 2, wherein, elasticity reset assembly 5 includes first support 51, slide bar 52, elastic component 53 and driving medium 54, first support 51 is located on base 1, slide bar 52 rigid coupling is on first support 51 and with the guide rail 11 syntropy setting, elastic component 53 is the pressure spring, its quantity has two, two elastic component 53 cover are located on slide bar 52, the one end slidable of driving medium 54 is connected on slide bar 52, and elastic component 53 of its both sides butt respectively, the other end and fixing base 2 rigid coupling. When the pneumatic clamp is used, when the workpiece is not deformed, the workpiece can be clamped and fixed through the fixed pressing block 4 and the movable pressing block of the pneumatic clamp, so that the workpiece can be stably machined. If the workpiece is deformed, the fixing seat 2 can be manually pushed to slide towards the deformed side of the workpiece, at the moment, the fixing seat 2 drives the transmission piece 54 to slide towards the side so as to compress the elastic piece 53 at the side, and then the workpiece is clamped and fixed through the fixed pressing block 4 and the movable pressing block, so that the deformed product can be clamped and fixed under the original deformation condition, the product is ensured to be fixedly processed under the natural (original) deformation condition, and the product is kept in the original state after being taken down. When a workpiece is machined and removed, the elastic part 53 drives the transmission part 54 to slide, so as to drive the fixing seat 2 to slide to an initial position, so that the clamp does not need to be repositioned, the use efficiency of the clamp is ensured, and the machining efficiency of the workpiece can be improved. The pneumatic clamp has simple structure, is convenient to produce and assemble, and is beneficial to reducing the production cost.

In the above structure, it should be noted that, the fixing pressing block 4 is fixedly connected to the fixing base 2, it should be understood that the fixing pressing block may be connected to the fixing base 2 by bolts, or by clamping, or by other connection methods common in the art, or by being integrally formed with the fixing base 2, and details are not described herein again. In addition, elasticity reset assembly 5 can set up with arbitrary one side of guide rail, perhaps the both sides of guide rail all are equipped with elasticity reset assembly 5, if set up two, the both sides of guide rail 11 are located to two elasticity reset assembly 5 symmetries, just so can more steady drive fixing base 2 slide.

Referring to fig. 1, the other end of the transmission member 54 opposite to the elastic member 53 is provided with a first connection hole 541, and the transmission member 54 is bolted to the fixed base 2 through the first connection hole 541; the first connection hole 541 has a movable space. The first connection hole 541 between the movable holes facilitates the connection between the transmission member 54 and the fixed base 2, and furthermore, prevents the fixed base 2 and the transmission member 54 from being locked during the transmission of motion.

Referring to fig. 2-3, a containing cavity 22 is provided in the fixing base 2, a communicating hole 23 communicating with the containing cavity 22 is provided at the top of the fixing base 2, a second connecting hole 24 communicating with the containing cavity 22 is provided at the side of the fixing base 2 away from the fixed pressing block 4, and the driving device 6 is fixedly connected to the side of the fixing base 2 away from the fixed pressing block 4. The containing cavity 22 is internally provided with a pressure lever 3 which is rotatably connected with a pin shaft of the fixed seat 2, two ends of the pressure lever 3 are respectively provided with a connecting end and a pressing end 32, the connecting end is positioned in the communicating hole 23, the pressing end 32 is the movable pressing block and is exposed out of the top surface of the fixed seat 2, the connecting end is connected with the driving device 6, and the pressing end 32 is the fixed pressing block 4. During the use, drive arrangement 6 promotes depression bar 3 and takes place clockwise rotation, thereby the work piece can be loosened to keeping away from 4 side motions of fixed briquetting to the activity briquetting, and drive arrangement 6 pulling depression bar 3 anticlockwise rotation, thereby the work piece can be pressed from both sides tightly to the motion of being close to 4 side motions of fixed briquetting to the activity briquetting. Above-mentioned simple structure, the production of being convenient for, manufacturing, assembly, in addition, through holding chamber 22 in the setting in fixing base 2, this provides the rotation space for depression bar 3, has improved space utilization, has reduced pneumatic fixture's volume to make pneumatic fixture overall structure's compactness, convenient to use.

As an improvement, the distance from the connecting end to the connecting position of the pressure rod 3 and the fixed seat 2 is greater than the distance from the pressing end 32 to the connecting position of the pressure rod 3 and the fixed seat 2, namely the distance from the power arm of the pressure rod 3 is greater than the distance from the resistance arm, so that the movable pressing block can generate greater force to clamp a workpiece.

Preferably, the material of the fixing seat 2 is aluminum or steel, so that the production and manufacturing cost of the pneumatic clamp can be reduced.

The above embodiments provide a slidable pneumatic clamp, it can be understood that if the above-mentioned rail structure and elastic return component are not provided, the pneumatic clamp becomes a fixed clamp which can be fixed to clamp a workpiece at a position.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a pneumatic fixture, includes the base, be equipped with the fixing base on the base, the rigid coupling has fixed briquetting, drive arrangement and swing joint to have movable briquetting on the fixing base, thereby drive arrangement is used for driving movable briquetting to the tight work piece of fixed briquetting motion clamp, its characterized in that:

2. The pneumatic clamp of claim 1, wherein: the elastic reset assembly comprises a first support arranged on the base, a sliding rod fixedly connected to the first support, an elastic piece sleeved on the sliding rod, and a transmission piece slidably connected to the sliding rod and abutted to the elastic piece, wherein the sliding rod and the fixing base are arranged in the same direction, and the transmission piece is fixedly connected to the other end of the elastic piece and the fixing base.

3. The pneumatic clamp of claim 2, wherein: the other end of the transmission piece, which is opposite to the elastic piece, is provided with a first connecting hole, and the transmission piece is connected with the fixed seat bolt through the first connecting hole; the first connection hole has a movable space.

4. The pneumatic clamp of claim 2, wherein: the elastic piece is a pressure spring.

5. The pneumatic clamp of claim 1, wherein: the base is provided with a guide rail, and the bottom of the fixing seat is provided with a guide groove corresponding to the guide rail.

6. The pneumatic clamp of claim 1, wherein: the driving device is fixedly connected to the side face of the fixed seat, which is far away from the fixed pressing block, of the fixed seat;

7. The pneumatic clamp of claim 6, wherein: the position where the compression bar is hinged with the fixed seat is a first position, and the distance from the connecting end to the first position is greater than the distance from the pressing end to the first position.

8. A pneumatic clamp according to any one of claims 1 to 7, wherein: the fixing seat is made of aluminum or steel.