CN212049455U

CN212049455U - Novel clamping device

Info

Publication number: CN212049455U
Application number: CN201921487129.4U
Authority: CN
Inventors: 易杰; 易辉成; 唐锋
Original assignee: Hunan Industry Polytechnic
Current assignee: Hunan Industry Polytechnic
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-12-01
Anticipated expiration: 2029-09-09

Abstract

The utility model discloses a novel clamping device belongs to intelligence and equips the field, clamping device contains: a support; the clamping piece is slidably supported on the bracket; the clamping device further comprises a rotating shaft, a driving protrusion is arranged on the rotating shaft, a sliding groove matched with the driving protrusion is arranged on the clamping piece, and when the rotating shaft rotates, the driving protrusion drives the clamping piece to move through the sliding groove. The utility model aims at providing a novel clamping device which has compact structure, low processing cost and reliable operation; meanwhile, the clamping piece has a self-adaptive function, the clamping stroke can be automatically adjusted according to different shapes of workpieces, and the universality of the clamping device is improved.

Description

Novel clamping device

Technical Field

The utility model belongs to intelligence equipment field specifically is a novel centre gripping device.

Background

A clamping device is a device for effectively clamping a workpiece, and a mechanical clamping device is generally of the following types according to the movement track of a clamping piece in the clamping device when clamping the workpiece:

(1) arc open-close type. The motion trail of the clamping piece chuck is circular arc under the drive of the transmission mechanism.

(2) The arc is parallel open and close. The two chucks of the clamping device do equal opening and closing movement when working, and the movement track of the chucks is an arc. The clamping device adopts two conditions that a parallelogram transmission mechanism drives the clamping heads to open and close equally.

(3) The straight lines are parallel to open and close. The motion tracks of the two chucks of the clamping device are straight lines, and the clamping surfaces of the two chucks are always kept parallel. The clamping device is usually in a mechanical structure form of gear and rack transmission, the clamping device is opened when the gear is positively transmitted, the clamping device clamps when the gear is reversely rotated, and the parallel opening and closing of the two chucks are completed by continuously switching the rotating speed of the driving motor, so that the parallel clamping movement of the chucks is realized.

Most of the existing clamping devices which are used most widely adopt pneumatic clamping devices; it is a cylinder using compressed air as power source. When air is supplied, the gripping device approaches the object and securely grips the object in order to perform an operation on the workpiece (e.g., change the direction of the workpiece or move the workpiece in a pick and place operation). When the air direction changes, the clamping device will release the workpiece. When the clamping device clamps the workpiece, certain force constraint and shape constraint are needed to ensure that the workpiece can be stably clamped in the moving, staying and loading processes, and the workpiece can be completely released and released when the clamping device is opened.

The device adopting the pneumatic clamping needs to be provided with a place for providing compressed air because the air is required to be accessed as power. And when the access cylinder is used as a driving source, the air pipe for inputting air is required to be accessed at the same time, so that the structure of the clamping device becomes complicated, and the occupied space is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems and providing a novel clamping device which has compact structure, low processing cost and reliable operation; meanwhile, the clamping piece has a self-adaptive function, the clamping stroke can be automatically adjusted according to different shapes of workpieces, and the universality of the clamping device is improved.

In order to realize the above purpose, the utility model adopts the technical scheme that: a novel clamping device, the clamping device comprising: a support (1); the clamping pieces (3, 4) are supported on the bracket (1) in a sliding way; the clamping device further comprises a rotating shaft (2), a driving protrusion (202) is arranged on the rotating shaft (2), sliding grooves (302, 402) matched with the driving protrusion (202) are formed in the clamping pieces (3, 4), and when the rotating shaft (2) rotates, the driving protrusion (202) drives the clamping pieces (3, 4) to move through the sliding grooves (302, 402).

Furthermore, a guide rail (101) is arranged on the bracket (1), and clamping piece seats (301, 401) which are matched with the guide rail (101) and can slide along the guide rail (101) are arranged on the clamping pieces (3, 4).

Further, the sliding groove (302, 402) is arranged on the clamping piece seat (301, 401).

Furthermore, a force bearing shaft (203) penetrating through the bracket (1) is arranged on the rotating shaft (2), and the force bearing shaft (203) is used for receiving an external rotation driving force.

Further, the clamping pieces (3, 4) are provided with a first clamping surface (303) and a second clamping surface (305), and the first clamping surface (303) and the second clamping surface (305) are on different planes.

Further, the clamping device comprises a left clamping piece (3) and a right clamping piece (4), wherein an inner concave part (304) is arranged in the direction in which the left clamping piece (3) and the right clamping piece (4) face each other.

Further, the rotating shaft (2) is arranged between the left clamping piece (3) and the right clamping piece (4).

Further, the driving protrusion (202) is configured in a protruding cylindrical shape, and the sliding groove (302, 402) is configured in an elongated shape.

Further, when the driving protrusion (202) is at the middle position of the sliding groove (302, 402), the jaws (3, 4) are at the maximum opening position.

Further, when the driving protrusions (202) are located at both side end positions of the slide grooves (302, 402), the jaws (3, 4) are located at the maximum gripping position.

The utility model has the advantages that: the utility model provides a novel clamping device which has compact structure, low processing cost and reliable operation; applicable in multiple use occasion, can make the clamping piece have the self-adaptation function simultaneously, can be according to the different automatically regulated centre gripping strokes of work piece shape, in addition, can also change the law of motion of clamping piece through the shape that changes the sliding tray for the law of motion of clamping piece is diversified, further improves clamping device's commonality.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the present invention.

Fig. 2 is a schematic structural diagram of the middle clip of the present invention.

Fig. 3 is a schematic structural view of the middle rotating shaft of the present invention.

Fig. 4 is a schematic structural view of the clamping device of the present invention in the first position.

Fig. 5 is a schematic structural view of the clamping device of the present invention in the second position.

The text labels in the figures are represented as: 1. a support; 2. a rotating shaft; 3. a left clamping piece; 4. a right clamping piece; 101. a guide rail; 201. a rotating shaft seat; 202. a drive protrusion; 203. a force-bearing shaft; 301. a left clip holder; 302. a left clip sliding groove; 303. a first clamping surface; 305. a second clamping surface; 304. an inner concave portion; 401. a right clamping piece seat; 402. the right clamping piece sliding groove.

Detailed Description

In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.

As shown in fig. 1-5, the specific structure of the present invention is: a novel clamping device comprises a bracket 1 as a main body supporting part, and a guide rail 101 is arranged in the longitudinal direction of the bracket 1, and preferably, the guide rail 101 is constructed as a T-shaped groove. Left clamping piece 3 and right clamping piece 4 are installed on support 1, are provided with left clamping piece left 301 in the bottom of left clamping piece 3, are provided with right clamping piece seat 401 in the bottom of right clamping piece 4, and is preferred, left clamping piece seat 301 with right clamping piece seat 401 constructs for T type piece, left side clamping piece seat 301 with right clamping piece seat 401 is installed into above-mentioned guide rail 101 and can slide along guide rail 101.

Preferably, a first clamping surface 303 and a second clamping surface 305 are provided on the left jaw 3, the first clamping surface 303 and the second clamping surface 305 being provided on different planes, in other words, the first clamping surface 303 is recessed from the surface of the second clamping surface 305. By the design, the clamping piece has larger friction force when clamping the workpiece, and the workpiece is clamped more stably.

A rotation shaft 2 is provided between the left jaw 3 and the right jaw 4, the rotation shaft 2 passes through the bracket 1, specifically, a force-receiving shaft 203 of the rotation shaft passes through the bracket 1, and the force-receiving shaft 203 is connectable to a driving source such as a driving motor (not shown) provided at a lower end side of the bracket 1 for receiving a rotational driving force. A rotating shaft seat 201 is provided at the top end of the rotating shaft 2 for preventing the rotating shaft 2 from falling off the bracket 1.

Preferably, in order to make the clip have a larger holding space, an inner recess 304 is provided at the lower end of the

holding surfaces

303, 305 of the clip, in other words, an inner recess 304 is provided in a direction in which the left clip 3 and the right clip 4 face each other. Preferably, the rotation shaft 2 is located in the inner recess 304, the rotation shaft 2 is provided with a driving protrusion 202 protruding from the rotation shaft base 201, the left clip base 301 is provided with a left clip sliding groove 302 engaged with the driving protrusion 202, the right clip left 401 is provided with a right clip sliding groove 402 engaged with the driving protrusion, and the driving protrusion 202 is respectively engaged with the left clip sliding groove 302 and the right clip sliding groove 402.

By the rotation of the rotating shaft 2, the driving protrusion 202 can slide in the left and right

clip sliding grooves

302 and 402 and drive the left and

right clips

3 and 4 to slide along the guide rail 101. The left and

right jaws

3, 4 are movable between a first position in fig. 4 and a second position in fig. 5. In fig. 4, the driving protrusions 202 are respectively located at the middle positions of the left clip sliding groove 302 and the right clip sliding groove 402, and at this time, the distance between the pair of driving protrusions 202 is longest in the longitudinal direction of the rack 1, and therefore, the left clip 3 and the right clip 4 are in the maximum opening position. In fig. 5, the driving protrusions 202 are located at the side end positions of the left and right

clip sliding grooves

302 and 402, respectively, and at this time, the distance between the pair of driving protrusions 202 is shortest in the longitudinal direction of the rack 1, and therefore, the left and

right clips

3 and 4 are at the minimum clamping position.

Preferably, in this embodiment, the driving protrusion 202 is configured as a cylindrical protrusion, and the sliding

grooves

302 and 402 are configured as long strips, so that the movement between the left clip piece 3 and the right clip piece 4 becomes smooth and stable. Alternatively, the shapes of the sliding

grooves

302 and 402, such as an arc shape or a serpentine shape, may also be changed, and the shape of the driving protrusion 202 may also be set to be other shapes than a cylindrical shape, so as to change the motion law of the clips by changing the shapes of the sliding grooves, so as to diversify the motion law of the clips, and further improve the versatility of the clamping device.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and their core concepts. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the above technical features can be combined in a proper manner; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.

Claims

1. A novel clamping device, the clamping device comprising:

a support (1);

the clamping pieces (3, 4) are supported on the bracket (1) in a sliding way;

the clamping device is characterized by further comprising a rotating shaft (2), wherein a driving protrusion (202) is arranged on the rotating shaft (2), sliding grooves (302 and 402) matched with the driving protrusion (202) are formed in the clamping pieces (3 and 4), and when the rotating shaft (2) rotates, the driving protrusion (202) drives the clamping pieces (3 and 4) to move through the sliding grooves (302 and 402).

2. A new clamping device, as claimed in claim 1, characterized in that said frame (1) is provided with a guide (101), and said jaws (3, 4) are provided with jaw seats (301, 401) cooperating with said guide (101) and slidable along said guide (101).

3. A new clamping device, according to claim 2, characterized in that said sliding grooves (302, 402) are provided on said clamping shoe (301, 401).

4. A new clamping device, as claimed in claim 1, characterized in that the rotating shaft (2) is provided with a force-bearing shaft (203) passing through the bracket (1), the force-bearing shaft (203) being adapted to receive an external rotational driving force.

5. A new clamping device, according to claim 3, characterized in that said clamping pieces (3, 4) have a first clamping surface (303) and a second clamping surface (305), said first clamping surface (303) and said second clamping surface (305) being in different planes.

6. A new clamping device, according to claim 1, characterized by comprising a left jaw (3) and a right jaw (4), said left jaw (3) and said right jaw (4) being provided with an internal recess (304) in the direction facing each other.

7. A new clamping device, according to claim 6, characterized in that said rotation axis (2) is arranged between said left jaw (3) and said right jaw (4).

8. A new clamping device, according to claim 1, characterized in that the driving protrusion (202) is configured as a protruding cylinder and the sliding groove (302, 402) is configured as an elongated shape.

9. A new clamping device, according to claim 1, characterized in that said jaws (3, 4) are in the maximum open position when said driving protrusion (202) is in the middle position of said sliding groove (302, 402).

10. A new clamping device, according to claim 1, characterized in that the jaws (3, 4) are in a minimum clamping position when the driving protrusions (202) are in the end positions on both sides of the sliding groove (302, 402).