CN210232307U

CN210232307U - Clamping device

Info

Publication number: CN210232307U
Application number: CN201920556688.XU
Authority: CN
Inventors: Li Liu; 刘力
Original assignee: Shanghai Shili Machinery Equipment Co ltd
Current assignee: Shanghai Shili Machinery Equipment Co ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-04-03
Anticipated expiration: 2029-04-23

Abstract

The utility model discloses a clamping device, which comprises a basic shell, at least one clamping jaw which can be driven and a spring; the piston is driven to one direction by utilizing the springs, the outer surface of the piston is provided with at least two springs, the bottom of the basic shell is provided with a bottom end cover, the center of the top of the bottom end cover is connected with a connecting rod, the outer surface of the clamping claw is provided with at least one groove, and one side of the groove is provided with a first driving clamping claw surface and a second driving clamping claw surface from top to bottom; the utility model discloses use the drive mode of wide-angle inclined plane and low-angle inclined plane combination, when using the tight claw face of wide-angle inclined plane fourth drive clamp to drive, can realize breaking away from fast of tight claw and blind rivet, when using the tight claw face of low-angle inclined plane second drive clamp to drive, can realize that the tight claw of clamp lasts to applying the blind rivet clamping-force, reduced device thickness and overall dimension.

Description

Clamping device

Technical Field

The utility model belongs to the technical field of clamping device, concretely relates to clamping device.

Background

Positioning and locking a machining clamp or a workpiece and a machine tool; positioning and locking a mold and equipment; the robot quickly and accurately grips or releases the object to be transferred; especially in machining, traditional anchor clamps are changed and need screw, clamp plate, gasket etc. locking back, recalibrate plane benchmark and position benchmark processing, and it is difficult and difficult just like this and easily because artificial carelessness leads to the product to scrap or cutter lathe to damage, utilize this kind of quick locking's mode, small and locking force is big, and positioning accuracy is high. In the process of processing products, the products can be quickly taken down from a machine tool, placed on a three-coordinate system for detection, and locked to the machine tool for processing without recalibration. Effectively shortens the auxiliary time, improves the product quality and greatly reduces the labor intensity of operators.

The existing zero point positioning and clamping structure has the problems that the self-locking force of a spring is small on the same diameter and thickness, the spring is usually kept by air pressure or hydraulic pressure, or the spring can be applied in a self-locking state only by needing larger diameter and thickness, or the self-locking is relieved by needing an additional pressurizing device, so that a clamping device is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a clamping device to propose in solving above-mentioned background art and increased clamping-force and locking force, not increase the problem of the structural space and the outside unblock pressure that demand simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme: a clamping device comprises a base housing and at least one drivable clamping jaw and a spring; the piston is driven to one direction by utilizing the springs, at least two springs are arranged on the outer surface of the piston, the bottom end cover is installed at the bottom of the basic shell, the top center of the bottom end cover is connected with the connecting rod, at least one groove is formed in the outer surface of the clamping jaw, a first driving clamping jaw face and a second driving clamping jaw face are formed in one side of the groove from top to bottom, the first driving clamping jaw face is larger than the inclination angle of the second driving clamping jaw face, a third driving clamping jaw face and a fourth driving clamping jaw face are formed in one side of the groove from top to bottom, a first piston face and a second piston face are formed in the end portions of the two ends of the piston and the corresponding positions of the groove from top to bottom, and a third piston face is formed in the opposite position of the first piston face.

Preferably, the included angle between the bottom end of the second driving clamping claw surface and the vertical line section is 15 degrees, and the included angle between the bottom end of the first driving clamping claw surface and the vertical line section is 40 degrees.

Preferably, an included angle between the bottom end of the third driving clamping jaw face and the vertical line section is 15 degrees, and an included angle between the bottom end of the fourth driving clamping jaw face and the vertical line section is 40 degrees.

Preferably, the groove on the outer side of the clamping claw is correspondingly engaged with the first piston surface, the second piston surface and the third piston surface of the piston surface.

Preferably, the piston moves up and down in a pneumatic mode and is linked with the clamping claw.

Preferably, the included angle between the spring and the bottom surface of the piston is 90 degrees.

Preferably, the tail end of the clamping claw is provided with a limiting groove and an arc-shaped tangent plane corresponding to the blind rivet.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model uses the driving mode of combining the large-angle inclined plane and the small-angle inclined plane, when the fourth driving clamping jaw face of the large-angle inclined plane is used for driving, the clamping jaw can be quickly separated from the blind rivet, when the second driving clamping jaw face of the small-angle inclined plane is used for driving, the clamping jaw can continuously exert the clamping force of the blind rivet, the thickness and the external dimension of the device are reduced, the driving is accurate and reliable, meanwhile, the failure of clamping and loosening can be avoided, the device has the characteristics of high clamping strength, quick driving without lag, long service life and the like, the utility model can be used on zero-point positioning and other grabbing equipment, can be used singly or used in a plurality of combinations, effectively solves the problems of quick and accurate locking and fixing of products or clamps, molds, tools and the like in the mechanical and automation fields, can effectively save the auxiliary time, and reduce the production cost and the management cost, the labor intensity of workers can be quickly exchanged among various production equipment and cleaning, assembling and detecting equipment, the reverse driving of the piston can be realized, and the single-side driving can also be realized; the clamping jaw can be one, two or more, and can be applied to other locking clamping fields.

Drawings

FIG. 1 is an external view of the present invention;

FIG. 2 is a schematic view of the top view of the piston connecting portion of the present invention;

FIG. 3 is a schematic view of the internal structure of the piston connection portion of the present invention;

fig. 4 is a schematic structural view of a third driving clamping jaw face portion of the present invention;

fig. 5 is a schematic structural view of a first driving clamping jaw face portion of the present invention;

FIG. 6 is a schematic structural view of the clamping jaw in a released state;

FIG. 7 is an enlarged schematic view of the clamping jaw of the present invention;

fig. 8 is a schematic structural view of the clamping state of the clamping jaw of the present invention;

FIG. 9 is an enlarged schematic view of the clamping jaw of the present invention;

in the figure: 1. a base housing; 3. a clamping jaw; 5. a piston; 6. a connecting rod; 7. a bottom end cap; 8. A spring; 30. a first drive clamping jaw face; 31. a second drive clamping jaw face; 32. a third drive clamp jaw face; 33. a fourth drive clamping jaw face; 51. a first piston face; 52. a second piston face; 53. a third piston face.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, 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 to 9, the present invention provides a technical solution: a clamping device comprises a basic housing 1 and at least one drivable clamping jaw 3 and a piston 5 and a connecting rod 6 and a bottom end cap 7 and a spring 8; the outer surface of the clamping jaw 3 is provided with at least one groove, one side of the groove is provided with a first driving clamping jaw surface 30 and a second driving clamping jaw surface 31 from top to bottom, the first driving clamping jaw surface 30 is larger than the inclination angle of the second driving clamping jaw surface 31, a third driving clamping jaw surface 32 and a fourth driving clamping jaw surface 33 are arranged on one side of the groove from top to bottom, the end parts of the two ends of the piston 5 and the corresponding position of the groove are provided with a first piston surface 51 and a second piston surface 52 from top to bottom, and the opposite position of the first piston surface 51 is provided with a third piston surface 53.

In this embodiment, it is preferable that the angle between the bottom end of the second driving clamping jaw surface 31 and the vertical line segment is 15 degrees, and the angle between the bottom end of the first driving clamping jaw surface 30 and the vertical line segment is 40 degrees.

In this embodiment, the third and

second piston surfaces

53, 52 and the first and fourth drive

clamping jaw surfaces

30, 33 are preferably arranged parallel to each other.

In this embodiment, the angle between the spring 8 and the bottom surface of the piston 5 is preferably 90 degrees.

In this embodiment, preferably, the end of the clamping claw 3 is provided with a limiting groove and an arc-shaped tangent plane corresponding to the blind rivet.

The utility model discloses an use flow and theory of operation: the second piston surface 52 is driven to move downwards by the pneumatic piston 5, the second piston surface 52 drives the first driving clamping jaw surface 30 and the second driving clamping jaw surface 31 to drive the clamping jaws 3 to move towards the center of the base shell 1 for rapid movement by adopting a driving mode of combining a large-angle inclined surface and a small-angle inclined surface, through the design of different inclination angles, when the second driving clamping jaw surface 31 is driven by using the small-angle inclined surface, the clamping jaws 3 can continuously apply a rivet clamping force, the stroke of the piston 5 can be effectively reduced, the piston 5 continues to move forwards, the first piston surface 51 is driven to the positions of the clamping jaws 3, and the limiting grooves and the arc-shaped tangent surfaces at the tail ends of the clamping jaws 3 continuously slide after being contacted with the positioning rivet inclined surfaces until the positioning rivets are locked; when the device needs to be loosened, air is supplied to the other end of the piston 5 through the air hole, the piston 5 moves in the opposite direction to compress the spring 8, the third piston surface 53 drives the fourth driving clamping claw surface 33 to realize quick loosening of the positioning blind rivet, and when the fourth driving clamping claw surface 33 with the large-angle inclined surface is used for driving, the clamping claw 3 can be quickly separated from the blind rivet, so that an object fixed on the positioning blind rivet can be quickly taken down.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A clamping device, characterized by: comprises a basic housing (1) and at least one drivable clamping jaw (3) and a spring (8); and a piston (5) which is driven one by one through a spring (8), at least two springs (8) are arranged on the outer surface of the piston (5), a bottom end cover (7) is installed at the bottom of the basic shell (1), a connecting rod (6) is connected to the top center of the bottom end cover (7), at least one groove is formed in the outer surface of the clamping claw (3), a first driving clamping claw surface (30) and a second driving clamping claw surface (31) are formed in one side of the groove from top to bottom, the first driving clamping claw surface (30) is larger than the inclination angle of the second driving clamping claw surface (31), a third driving clamping claw surface (32) and a fourth driving clamping claw surface (33) are formed in one side of the groove from top to bottom, a first piston surface (51) and a second piston surface (52) are formed in the positions, corresponding to the grooves, of the end parts of the two ends of the piston (5), from top to bottom, and a third piston surface (53) is arranged at the opposite position of the first piston surface (51).

2. A clamping device as claimed in claim 1, wherein: the included angle between the bottom end of the second driving clamping claw surface (31) and the vertical line section is 15 degrees, and the included angle between the bottom end of the first driving clamping claw surface (30) and the vertical line section is 40 degrees.

3. A clamping device as claimed in claim 1, wherein: the included angle between the bottom end of the third driving clamping claw surface (32) and the vertical line section is 15 degrees, and the included angle between the bottom end of the fourth driving clamping claw surface (33) and the vertical line section is 40 degrees.

4. A clamping device as claimed in claim 1, wherein: the groove on the outer side of the clamping claw (3) is correspondingly clamped with a first piston surface (51), a second piston surface (52) and a third piston surface (53) on the surface of the piston (5).

5. A clamping device as claimed in claim 1, wherein: the piston (5) moves up and down in a pneumatic mode and is linked with the clamping claw (3).

6. A clamping device as claimed in claim 1, wherein: the included angle between the spring (8) and the bottom surface of the piston (5) is 90 degrees.

7. A clamping device as claimed in claim 1, wherein: the tail end of the clamping claw (3) is provided with a limiting groove and an arc-shaped tangent plane corresponding to the blind rivet.