CN218533654U

CN218533654U - Pneumatic clamp

Info

Publication number: CN218533654U
Application number: CN202222278794.0U
Authority: CN
Inventors: 江雪山
Original assignee: Hangzhou Yiwen Technology Co ltd
Current assignee: Hangzhou Yiwen Technology Co ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-02-28
Anticipated expiration: 2032-08-29

Abstract

The utility model discloses a pneumatic clamp, which comprises a box body, the bottom of box is equipped with the locating piece, the top of box is equipped with first pneumatic push rod, first pneumatic push rod is external to have the air pump, the bottom of first pneumatic push rod is equipped with the main splint, its characterized in that, two sides of main splint articulate respectively has two auxiliary splint, be equipped with the drive assembly that is used for driving auxiliary splint to rotate on the main splint, the drive assembly includes the second pneumatic push rod that sets firmly on the main splint and the connecting rod that articulates with second pneumatic push rod, open the connecting rod spout on the auxiliary splint, the connecting rod is connected with connecting rod spout slip, the top of locating piece is the V type; two claws of the three-claw clamp are replaced by V-shaped positioning blocks, and a main clamping plate is pushed by a first pneumatic push rod to move towards the direction of a workpiece, so that the workpiece is clamped from right above the workpiece; the auxiliary clamping plate is contacted with the workpiece, so that the auxiliary clamping effect is achieved, and the clamping effect is further improved.

Description

Pneumatic clamp

Technical Field

The utility model relates to an anchor clamps technical field specifically is a pneumatic fixture.

Background

When a workpiece is machined on a machine tool, in order to enable the dimensional accuracy of the workpiece to meet the specified technical requirements, the workpiece needs to be clamped and positioned before machining, so that the workpiece needs to be placed on a clamp for fixing, the workpiece occupies a correct position to be machined or detected, the machining quality of the workpiece is improved, and the standardization of workpiece production is guaranteed.

In the prior art, for example, in a three-jaw clamp with application number CN201420538437.6, three clamping jaws are moving parts, and once one jaw fails, a workpiece is shifted, so that the processing quality of the workpiece is poor.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one technical problem who mentions in the background art, the utility model aims to provide a pneumatic clamp improves the tight effect of clamp's clamp.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a pneumatic fixture, includes the box, the bottom of box is equipped with the locating piece, the top of box is equipped with first pneumatic push rod, first pneumatic push rod is external to have the air pump, first pneumatic push rod's bottom is equipped with the main clamping plate, a serial communication port, the both sides of main clamping plate articulate respectively has two auxiliary splint, be equipped with on the main clamping plate and be used for driving auxiliary splint pivoted drive assembly, drive assembly including set firmly second pneumatic push rod on the main clamping plate and with second pneumatic push rod articulated connecting rod, it has the connecting rod spout to open on the auxiliary clamping plate, connecting rod and connecting rod spout sliding connection, the top of locating piece is the V type.

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

two claws of the three-claw clamp are replaced by V-shaped positioning blocks, one end of a cylindrical workpiece is placed on the positioning blocks, the other end of the workpiece is dragged, and the positioning blocks are V-shaped, so that the workpiece can be prevented from rolling in the horizontal direction, and the axis of the cylindrical workpiece is positioned; then the main clamping plate is pushed by the first pneumatic push rod to move towards the direction of the workpiece, and the workpiece is clamped from the right upper side of the workpiece; after the workpiece is clamped, in order to achieve a better clamping effect, the two second pneumatic push rods extend to push the connecting rod and the auxiliary clamping plate to rotate, the auxiliary clamping plate is in contact with the workpiece, an auxiliary clamping effect is achieved, and the clamping effect is further improved.

Preferably, the first pneumatic push rod comprises a first outer rod and a first inner rod, the second pneumatic push rod comprises a second outer rod and a second inner rod, and an air pipe used for communicating the first outer rod and the second outer rod is arranged between the first outer rod and the second outer rod.

Preferably, the bottom of the main clamping plate is slidably connected with a main anti-slip sheet, the top of the main anti-slip sheet is provided with a T-shaped rod, the top of the T-shaped rod extends into the first outer rod, and the T-shaped rod is provided with a piston for closing/opening an air pipe.

Preferably, the air pipe comprises a reverse taper pipe, the piston is a circular truncated cone, the diameter of the upper end of the piston is larger than that of the lower end of the piston, and the maximum diameter of the piston is larger than the minimum diameter of the reverse taper pipe.

Preferably, the bottom of the box body is provided with a limiting sliding chute, a limiting part is connected in the limiting sliding chute in a sliding manner, and a pressure spring is arranged between the limiting part and the inner wall of the limiting sliding chute; the bottom wall in the box body is provided with a clamping table, and two ends of the positioning block are respectively abutted against the end faces of the clamping table and the limiting part.

Preferably, one end of the limiting piece, which is far away from the positioning block, is provided with a guide sliding surface.

Preferably, the bottom of the auxiliary clamping plate is provided with an auxiliary anti-slip sheet.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a front sectional view of the present invention;

fig. 3 is a side cross-sectional view of the present invention;

FIG. 4 is an enlarged fragmentary view at A "of FIG. 2;

FIG. 5 is an enlarged view of a portion of FIG. 4 at "B";

in the figure:

1. a box body; 11. a limiting chute; 12. clamping a platform; 2. positioning blocks; 3. a stopper; 31. a pressure spring; 4. a first pneumatic push rod; 41. a first outer rod; 42. a first inner bar; 5. a main clamping plate; 50. an air tube; 501. a taper pipe; 51. a main anti-slip sheet; 52. a T-shaped rod; 53. a piston; 6. an auxiliary splint; 61. an auxiliary anti-slip sheet; 62. a connecting rod chute; 7. a drive assembly; 71. a second pneumatic push rod; 711. a second outer pole; 712. a second inner bar; 72. a connecting rod.

Detailed Description

The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, the present embodiment provides a pneumatic clamp, including a box body 1, a positioning block 2 is disposed at the bottom of the box body 1, and the top of the positioning block 2 is V-shaped; firstly, a cylindrical workpiece is placed on the positioning block 2, the other end of the workpiece is dragged, the workpiece is cylindrical, the top of the positioning block 2 is V-shaped, and the workpiece is placed on the positioning block 2, so that the workpiece can be prevented from rolling in the horizontal direction, the workpiece cannot roll, the movement of the workpiece in the left and right directions is limited, and the axial direction of the cylindrical workpiece is positioned;

further, a first pneumatic push rod 4 is arranged at the top of the box body 1, an air pump is externally connected to the first pneumatic push rod 4, and a main clamping plate 5 is arranged at the bottom of the first pneumatic push rod 4; air is fed into the first pneumatic push rod 4 through the air pump, so that the first pneumatic push rod 4 is extended, and the main clamping plate 5 is contacted with the top of the workpiece to play a clamping role;

furthermore, two auxiliary splints 6 are respectively hinged to two sides of the main splint 5, a driving assembly 7 for driving the auxiliary splints 6 to rotate is arranged on the main splint 5, the driving assembly 7 comprises a second pneumatic push rod 71 fixedly arranged on the main splint 5 and a connecting rod 72 hinged to the second pneumatic push rod 71, a connecting rod chute 62 is formed in the auxiliary splint 6, and the connecting rod 72 is slidably connected with the connecting rod chute 62; the two second pneumatic push rods 71 extend, and under the action of the connecting rod 72, the two auxiliary clamping plates 6 rotate and are clamped on two sides of the workpiece, so that the clamping force is improved, and the clamping effect of the clamp is better.

The bottom of the main splint 5 is connected with a main anti-slip sheet 51 in a sliding manner, the bottom of the auxiliary splint 6 is provided with an auxiliary anti-slip sheet 61, and the main anti-slip sheet 51 and the auxiliary anti-slip sheet 61 can achieve an anti-slip effect.

Referring to fig. 3 and 4, in the present embodiment, the first pneumatic push rod 4 includes a first outer rod 41 and a first inner rod 42, the second pneumatic push rod 71 includes a second outer rod 711 and a second inner rod 712, and an air tube 50 for communicating the first outer rod 41 and the second outer rod 711 is disposed between the first outer rod 41 and the second outer rod 711; the top of the main anti-skid sheet 51 is provided with a T-shaped rod 52, the top of the T-shaped rod 52 extends into the first outer rod 41, and the T-shaped rod 52 is provided with a piston 53 for closing/opening the air pipe 50; the air pipe 50 comprises a reverse taper pipe 501, the piston 53 is a circular truncated cone, the diameter of the upper end of the piston 53 is larger than that of the lower end of the piston, and the maximum diameter of the piston 53 is larger than that of the reverse taper pipe 501; when the main anti-slip sheet 51 contacts with the workpiece, the T-shaped rod 52 is pushed to ascend, so that the piston 53 is opened, gas enters the second outer rod 711 from the gas pipe 50, and the second pneumatic push rod 71 is extended.

Referring to fig. 2, in this embodiment, a limiting sliding groove 11 is disposed at the bottom of the box body 1, a limiting member 3 is slidably connected to the limiting sliding groove 11, and a pressure spring 31 is disposed between the limiting member 3 and an inner wall of the limiting sliding groove 11; a clamping table 12 is arranged on the bottom wall in the box body 1, and two ends of the positioning block 2 are respectively abutted against the clamping table 12 and the end face of the limiting piece 3; it is worth noting that one end of the limiting piece 3 away from the positioning block 2 is further provided with a sliding guide surface; in the practical application process, the positioning element 2 is not appropriate in size, or the surface of the positioning element 2 is damaged, the positioning element 2 needs to be replaced, when the positioning element 2 is placed in the box body 1, the positioning element 2 is placed on one side, close to the positioning element 3, of the box body 1, the positioning element 2 is pushed to slide in the box body 1, the positioning element 2 is contacted with the sliding guide surface, the positioning element 3 is pushed to slide downwards, the positioning element 3 enters the limiting sliding groove 11, the pressure spring 31 is pressed at the moment, the positioning element 2 is continuously pushed, when the positioning element 2 is abutted to the clamping table 12, the positioning element 3 is reset under the elastic force of the pressure spring 31, if the positioning element 3 is not arranged, the positioning element 2 needs to be manually lifted, time and labor are wasted, the positioning element 3 and the clamping table 12 are arranged, the sliding of the positioning element 2 can be limited, and the installation of the positioning element 2 can be facilitated; when the positioning member 2 is to be removed, the limiting member 31 is pressed downward, and the positioning member 2 is pulled out.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The utility model provides a pneumatic fixture, includes box (1), the bottom of box (1) is equipped with locating piece (2), the top of box (1) is equipped with first pneumatic push rod (4), first pneumatic push rod (4) are external to have the air pump, the bottom of first pneumatic push rod (4) is equipped with main splint (5), its characterized in that, the both sides of main splint (5) articulate respectively has two auxiliary splint (6), be equipped with on main splint (5) and be used for driving auxiliary splint (6) pivoted drive assembly (7), drive assembly (7) including set firmly second pneumatic push rod (71) on main splint (5) and with second pneumatic push rod (71) articulated connecting rod (72), it has connecting rod spout (62) to open on auxiliary splint (6), connecting rod (72) and connecting rod spout (62) sliding connection, the top of locating piece (2) is the V type.

2. A pneumatic clamp according to claim 1, wherein said first pneumatic ram (4) comprises a first outer rod (41) and a first inner rod (42), said second pneumatic ram (71) comprises a second outer rod (711) and a second inner rod (712), and an air tube (50) for communicating said first outer rod (41) with said second outer rod (711) is provided between said first outer rod (41) and said second outer rod (711).

3. A pneumatic clamp according to claim 2, wherein a main anti-skid plate (51) is slidably connected to the bottom of the main clamping plate (5), a T-shaped rod (52) is arranged on the top of the main anti-skid plate (51), the top of the T-shaped rod (52) extends into the first outer rod (41), and a piston (53) for closing/opening the air pipe (50) is arranged on the T-shaped rod (52).

4. A pneumatic clamp according to claim 3, wherein the air tube (50) comprises a tapered tube (501), the piston (53) is frustoconical, and the diameter of the upper end of the piston (53) is greater than the diameter of the lower end, and the maximum diameter of the piston (53) is greater than the minimum diameter of the tapered tube (501).

5. The pneumatic clamp according to claim 1, wherein a limiting sliding groove (11) is formed in the bottom of the box body (1), a limiting piece (3) is connected in the limiting sliding groove (11) in a sliding manner, and a pressure spring (31) is arranged between the limiting piece (3) and the inner wall of the limiting sliding groove (11); the bottom wall in the box body (1) is provided with a clamping table (12), and two ends of the positioning block (2) are respectively abutted against the end faces of the clamping table (12) and the limiting part (3).

6. A pneumatic clamp according to claim 5, wherein the end of the limiting member (3) remote from the positioning block (2) is provided with a guiding and sliding surface.

7. A pneumatic clamp according to claim 1, characterized in that the bottom of said secondary splint (6) is provided with secondary anti-slip tabs (61).