CN210757782U

CN210757782U - Workpiece clamping tool

Info

Publication number: CN210757782U
Application number: CN201921549686.4U
Authority: CN
Inventors: 陈斌; 郑龙
Original assignee: Changzhou Kellum Intelligent Equipment Co ltd
Current assignee: Changzhou Kellum Intelligent Equipment Co ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-06-16
Anticipated expiration: 2029-09-17

Abstract

The utility model provides a workpiece clamping tool, which comprises a clamping seat, a clamping switch, a first connecting rod, a second connecting rod and a profiling clamping block; the two clamping switches are hinged to the left side and the right side of the clamping seat and comprise upper arms and lower arms, a movable gap is formed between the upper arms and the middle part of the lower arms, the front end of the first connecting rod is hinged to one end, far away from the clamping seat, in the movable gap, the tail end of the first connecting rod is provided with mounting arms which are opposite up and down, a limiting part is arranged between the two mounting arms, and the limiting part is in a notch shape; the front end of the second connecting rod is hinged on the clamping seat, and the middle part of the second connecting rod is hinged on the mounting arm; when the clamping switch is locked, the first connecting rod rotates into the movable gap, the limiting part pushes the second connecting rod inwards to enable the second connecting rod to be perpendicular to the clamping switch, and the limiting part clamps the second connecting rod; the profiling clamping blocks are fixed at the tail end of the second connecting rod, and the profiling clamping blocks on the left side and the right side can simultaneously clamp the left side and the right side of the workpiece. The utility model discloses can press from both sides tight work piece steadily, convenient operation to do not damage the work piece.

Description

Workpiece clamping tool

Technical Field

The utility model belongs to the technical field of frock clamp, concretely relates to work piece presss from both sides tight frock.

Background

The workpiece clamping tool is a common auxiliary facility in modern industrial manufacturing process, and the workpiece needs to be fixed by the clamping tool in the processes of machining, spraying and the like so as to improve the machining precision and efficiency. In addition, as robots are popularized in the field of manufacturing, a clamping tool needs to be assembled with the robot to accurately transfer a workpiece. The existing clamping tool usually utilizes an air cylinder to drive a clamping arm to clamp a workpiece, however, the clamping action is easy to damage the workpiece for the easily deformed workpiece due to the rapid action process of the air cylinder, so that the reject ratio of the product is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a work piece presss from both sides tight frock can press from both sides tight work piece steadily, convenient operation to be difficult to damage the work piece.

The utility model provides a following technical scheme:

a workpiece clamping tool comprises a clamping seat, a clamping switch, a first connecting rod, a second connecting rod and a profiling clamping block; the two clamping switches are symmetrically hinged to the left side and the right side of the clamping seat, each clamping switch comprises an upper arm and a lower arm which are arranged oppositely up and down, the middle parts of the upper arm and the lower arm are bent upwards and downwards respectively to form a movable gap, the front end of the first connecting rod is hinged to one end, far away from the clamping seat, in the movable gap, the tail end of the first connecting rod is provided with mounting arms which are opposite up and down, a limiting part is arranged between the two mounting arms, the limiting part and the mounting arms are integrally formed, and the limiting part is in a notch shape; the front end of the second connecting rod is hinged to the clamping seat, and the middle part of the second connecting rod is hinged to the two mounting arms; when the clamping switch is locked, the first connecting rod rotates into the movable gap to be parallel to the clamping switch, the limiting part pushes the second connecting rod inwards to enable the second connecting rod to be perpendicular to the clamping switch, and the limiting part clamps the second connecting rod; the profiling clamping blocks are fixed at the tail end of the second connecting rod, and the profiling clamping blocks on the left side and the right side can simultaneously clamp the left side and the right side of a workpiece.

Preferably, horizontal cantilevers are respectively fixed to the left side and the right side of the clamping seat, and the clamping switch and the second connecting rod are hinged to the cantilevers.

Preferably, the cantilever is triangular, and the clamping switch and the second connecting rod are respectively hinged to two top corners of the cantilever.

Preferably, the tail end of the second connecting rod is provided with a horizontal strip-shaped mounting hole, and the profiling clamping block is mounted in the strip-shaped mounting hole through a bolt.

Preferably, two clamping blocks are mounted at the tail end of the second connecting rod, the upper end and the lower end of each clamping block are clamped on the second connecting rod, a mounting hole for the bolt to pass through is formed in the center of each clamping block, and the bolts can be positioned in the strip-shaped mounting holes by the clamping blocks.

Preferably, the front side wall of the workpiece is symmetrically provided with two positioning holes, the clamping seat is provided with two positioning pins matched with the positioning holes, and the positioning pins can be inserted into the positioning holes.

Preferably, the robot paw is further provided with two pneumatic paws; the front end fixed mounting of holder has the press from both sides the post, pneumatic claw can press from both sides tightly press from both sides the post.

Preferably, the cross section of the clamping column is quadrilateral, and the clamping part structure of the pneumatic claw is matched with the clamping column.

Preferably, an operating handle is installed at the tail end of the clamping switch, the operating handle is made of rubber, and the operating handle covers the upper arm and the tail end of the lower arm.

Preferably, the top of the clamping seat is provided with a handle through a screw, and the handle is made of plastic materials.

The utility model has the advantages that: the utility model discloses articulated clamping switch on the holder, first connecting rod articulates in clamping switch inner movable gap's afterbody, the front end of second connecting rod articulates on the holder, the middle part articulates on the installation arm of first connecting rod, because be equipped with spacing portion between the installation arm of first connecting rod, when locking clamping switch, spacing portion supports the middle part of second connecting rod and promotes its direction rotation to the work piece, clamping switch rotates the back that targets in place, spacing portion just in time supports the second connecting rod, the profile modeling clamp splice that makes on the second connecting rod supports the lateral wall of pressing the work piece, thereby make two profile modeling clamp splices press from both sides tight work piece simultaneously. The utility model discloses convenient operation can not produce big impact force to the work piece at the profile modeling clamp splice to the work piece clamping process, is difficult to damage the work piece.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the three-dimensional structure of the present invention in a state of clamping a workpiece;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a schematic perspective view of the workpiece released state of the present invention;

FIG. 4 is an enlarged schematic view of portion B of FIG. 3;

FIG. 5 is a schematic top view of the structure of FIG. 3;

labeled as: 1. a holder; 2. a clamping switch; 3. a first link; 4. a second link; 5. profiling clamping blocks; 6. a cantilever; 7. an upper arm; 8. a lower arm; 9. a clearance for movement; 10. mounting an arm; 11. a limiting part; 12. an operating handle; 13. a strip-shaped mounting hole; 14. a clamping block; 15. a bolt; 16. positioning pins; 17. a robot gripper; 18. a pneumatic claw; 19. a handle; 20. a workpiece; 21. and (5) clamping the column.

Detailed Description

As shown in fig. 1 to 5, a workpiece clamping tool comprises a clamping seat 1, a clamping switch 2, a first connecting rod 3, a second connecting rod 4 and a profiling clamping block 5. The left and right sides of holder 1 is fixed with horizontally cantilever 6 respectively, two press from both sides tight switch 2 and articulate respectively symmetrically on two cantilever 6, press from both sides tight switch 2 including relative upper arm 7 and the underarm 8 that sets up from top to bottom, the middle part of upper arm 7 and underarm 8 is incurved respectively and is formed movable gap 9 with the downwarping, the front end of first connecting rod 3 is located movable gap 9, and articulate the one end of keeping away from holder 1 on upper arm 7 and the underarm 8, the tail end of first connecting rod 3 is equipped with relative installation arm 10 from top to bottom, be equipped with spacing portion 11 between two installation arms 10, spacing portion 11 and installation arm 10 integrated into one piece, and spacing portion 11 is the breach shape of the tip internal contraction by installation arm 10. The front end of the second connecting rod 4 is also hinged on the cantilever 6, and the middle part of the second connecting rod 4 is hinged on the two mounting arms 10; when the clamping switch 2 is locked, the limiting part 11 slowly pushes the second connecting rod 4 towards the inner side, namely the workpiece side, so that the second connecting rod 4 is perpendicular to the clamping switch 2, and in the process, the first connecting rod 3 rotates into the movable gap 9 and is parallel to the clamping switch 2. The shape structure of the profiling clamping block 5 is matched with the shape structure of the front end of the workpiece 20, so that the workpiece can be clamped more stably, the profiling clamping block 5 is fixed at the tail end of the second connecting rod 4, and after the clamping switch 2 is locked, the limiting part 11 of the first connecting rod 3 clamps the second connecting rod 4, so that the profiling clamping blocks 5 on the left side and the right side simultaneously clamp the left side and the right side of the workpiece 20. When the clamp needs to be unlocked, the clamping switch 2 is only needed to be manually shifted in the opposite direction, so that the operation is simple, and the workpiece can be conveniently and quickly taken out. Operating handle 12 is installed to the tail end of clamping switch 2, and operating handle 12 is the rubber material, and operating handle 12 cladding upper arm 7 and the tail end of underarm 8 make manual operation lighter, feel better.

As shown in fig. 3 to 5, the cantilever 6 is triangular, the clamp switch 2 and the second link 4 are hinged to two top corners of the cantilever 6, the hinge points between the two are staggered, and the second link 4 horizontally penetrates through the movable gap 9 of the clamp switch, so that the rotation processes of the two do not interfere with each other.

As shown in fig. 2, the second connecting rod 4 is formed by bending a steel plate by 180 degrees and then processing, the tail end of the second connecting rod 4 is bent to form a horizontal strip-shaped mounting hole 13, the copying clamp block 5 is mounted in the strip-shaped mounting hole 13 through a bolt 15, and the position of the copying clamp block 5 in the strip-shaped mounting hole 13 can be adjusted to clamp the workpiece 20 more accurately and reliably. The left side and the right side of the tail end of the second connecting rod 4 are respectively provided with a fixture block 14, the upper end and the lower end of the fixture block 14 are tightly clamped with the second connecting rod 4, the center of the fixture block 14 is provided with a mounting hole for a bolt 15 to pass through, and the bolt 15 can be positioned in the strip-shaped mounting hole 13 by the fixture block 14.

Two positioning holes are symmetrically formed in the front side wall of the workpiece 20, as shown in fig. 5, two positioning pins 16 matched with the positioning holes are installed on the clamping seat 1, when the workpiece is clamped, the clamping seat 1 is moved forwards firstly, the positioning pins 16 are inserted into the positioning holes, the positioning accuracy between the workpiece 20 and the clamping seat 1 is ensured, and meanwhile, the positioning pins 16 also increase supporting force and clamping force on the workpiece in the horizontal direction, so that the workpiece is prevented from shaking.

As shown in fig. 5, the tooling further includes a robot gripper 17, two pneumatic grippers 18 are disposed on the robot gripper 17, and the pneumatic grippers 18 are in the prior art. The front end fixed mounting of holder 1 has the press from both sides post 21, and pneumatic claw 18 can press from both sides tight press from both sides post 21 to snatch anchor clamps, realize the quick travel and the accurate positioning to the product. The cross section of the clamping column 21 is a quadrangle which is turned by 45 degrees, the clamping part structure of the pneumatic claw 18 is matched with the clamping column 21, and the clamping column 21 is of a non-circular structure, so that the pneumatic claw 18 cannot freely rotate relative to the clamping column 21 in the process of grabbing the clamp, and the stability of grabbing action is ensured.

As shown in fig. 1 and 3, a handle 19 is mounted at the top of the clamping seat 1 through screws, the handle 19 is made of plastic, and the handle 19 is convenient for lifting, taking and moving the tool.

The use method of the tool comprises the following steps: the robot gripper 17 clamps the clamping column 21 to grab the tool, the positioning pin 16 on the clamping seat 1 is aligned with the positioning hole on the workpiece 20 and then inserted into the positioning hole, the clamping switch 2 is manually shifted, the limiting part 11 on the first connecting rod 3 pushes the second connecting rod 4 to one side of the workpiece 20 until the clamping switch 2 is shifted to the maximum rotation stroke, and at the moment, the limiting part 11 pushes the second connecting rod 4 to the direction perpendicular to the clamping switch 2, so that the two copying clamping blocks 5 simultaneously clamp the workpiece 20. The robot gripper 17 moves the tool for gripping the workpiece 20 into the desired machining area.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A workpiece clamping tool is characterized by comprising a clamping seat, a clamping switch, a first connecting rod, a second connecting rod and a profiling clamping block; the two clamping switches are symmetrically hinged to the left side and the right side of the clamping seat, each clamping switch comprises an upper arm and a lower arm which are arranged oppositely up and down, the middle parts of the upper arm and the lower arm are bent upwards and downwards respectively to form a movable gap, the front end of the first connecting rod is hinged to one end, far away from the clamping seat, in the movable gap, the tail end of the first connecting rod is provided with mounting arms which are opposite up and down, a limiting part is arranged between the two mounting arms, the limiting part and the mounting arms are integrally formed, and the limiting part is in a notch shape; the front end of the second connecting rod is hinged to the clamping seat, and the middle part of the second connecting rod is hinged to the two mounting arms; when the clamping switch is locked, the first connecting rod rotates into the movable gap to be parallel to the clamping switch, the limiting part pushes the second connecting rod inwards to enable the second connecting rod to be perpendicular to the clamping switch, and the limiting part clamps the second connecting rod; the profiling clamping blocks are fixed at the tail end of the second connecting rod, and the profiling clamping blocks on the left side and the right side can simultaneously clamp the left side and the right side of a workpiece.

2. The workpiece clamping tool according to claim 1, wherein horizontal cantilevers are respectively fixed to the left side and the right side of the clamping seat, and the clamping switch and the second connecting rod are hinged to the cantilevers.

3. The workpiece clamping tool according to claim 2, wherein the cantilever is triangular, and the clamping switch and the second connecting rod are respectively hinged to two top corners of the cantilever.

4. The workpiece clamping tool according to claim 3, wherein a horizontal strip-shaped mounting hole is formed in the tail end of the second connecting rod, and the profiling clamping block is mounted in the strip-shaped mounting hole through a bolt.

5. The workpiece clamping tool according to claim 4, wherein two clamping blocks are mounted at the tail end of the second connecting rod, the upper end and the lower end of each clamping block clamp the second connecting rod, a mounting hole for the bolt to pass through is formed in the center of each clamping block, and the bolts can be positioned in the strip-shaped mounting holes by the clamping blocks.

6. The workpiece clamping tool according to claim 5, wherein two positioning holes are symmetrically formed in the front side wall of the workpiece, two positioning pins matched with the positioning holes are mounted on the clamping seat, and the positioning pins can be inserted into the positioning holes.

7. The workpiece clamping tool according to claim 6, further comprising a robot claw, wherein two pneumatic claws are arranged on the robot claw; the front end fixed mounting of holder has the press from both sides the post, pneumatic claw can press from both sides tightly press from both sides the post.

8. The workpiece clamping tool according to claim 7, wherein the cross section of the clamping column is quadrilateral, and the clamping part structure of the pneumatic claw is matched with the clamping column.

9. The workpiece clamping tool according to claim 1, wherein an operating handle is mounted at the tail end of the clamping switch, the operating handle is made of rubber, and the operating handle wraps the tail ends of the upper arm and the lower arm.

10. The workpiece clamping tool according to claim 1, wherein a handle is mounted at the top of the clamping seat through a screw, and the handle is made of a plastic material.