CN220637960U

CN220637960U - Three-finger cylinder tongs

Info

Publication number: CN220637960U
Application number: CN202321274164.4U
Authority: CN
Inventors: 许全敏
Original assignee: Dongguan Yanfei Pneumatic Equipment Co ltd
Current assignee: Dongguan Yanfei Pneumatic Equipment Co ltd
Priority date: 2023-05-24
Filing date: 2023-05-24
Publication date: 2024-03-22
Anticipated expiration: 2033-05-24

Abstract

The utility model relates to the technical field of three-finger cylinder grippers, and discloses a three-finger cylinder gripper which comprises a shell, wherein a cylinder is fixedly arranged in the shell, three push rods are hinged to an output end array of the cylinder, sliding blocks are hinged to the other ends of the push rods, sliding grooves are formed in the tops of the shell corresponding to the sliding block arrays, clamping parts are embedded in the tops of the sliding blocks, and clamping claws are fixedly arranged at the tops of the clamping parts. Through holding the assembly body of the T shape piece and gripper, insert the installation groove opening with T shape piece bottom one side of falling to be located L shape piece downside, promote L shape piece to shell axis direction, spring one is extruded the shrink, until the whole installation groove that inserts in T shape piece bottom of falling, the outside promotion of level again falls T shape piece, make the embedding of T shape piece bottom between installation groove gomphosis portion and L shape piece, carry out the centre gripping to the assembly body of the T shape piece of falling and gripper fixed, thereby reach the purpose of easy to assemble and dismantlement gripper.

Description

Three-finger cylinder tongs

Technical Field

The utility model relates to the technical field of three-finger cylinder grippers, in particular to a three-finger cylinder gripper.

Background

The three-finger cylinder gripper is a mechanical hand commonly used on industrial production lines, drives three clamping claws to synchronously move along the horizontal direction through the cylinder in the three-finger cylinder gripper and the crank, clamps articles close to each other and releases the articles far away from each other, clamps curved-surface workpieces such as rod-shaped, tubular and spherical workpieces, and realizes the feeding, discharging, transferring and the like of the workpieces on the production lines.

The clamping claw of the three-finger cylinder gripper and the sliding block are fixedly installed through screws or bolts, when the three or more bolts are required to be disassembled during installation and disassembly, the clamping claw can be installed and disassembled, the time consumption is long, and after the bolts and the sliding block are worn for many times, the sliding block needs to be integrally replaced, so that the three-finger cylinder gripper can be further improved.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides the three-finger cylinder gripper which has the advantages of convenient installation and disassembly of the gripper, and solves the problems of troublesome operation and long time consumption when the gripper is installed and disassembled.

(II) technical scheme

In order to achieve the purpose of conveniently installing and dismantling the clamping claw, the utility model provides the following technical scheme: the utility model provides a three indicate cylinder tongs, includes the shell, the inside fixed mounting of shell has the cylinder, the output array of cylinder articulates there are three push rods, the other end of push rod articulates there is the sliding block, the spout has been seted up to the top of shell correspondence sliding block array, the top scarf joint of sliding block has joint part, the top fixed mounting of joint part has the gripper jaw, the surface array of gripper jaw is provided with the rubber strip, the both sides swing joint of gripper jaw has the holding part.

Preferably, the clamping component comprises an inverted T-shaped block fixedly installed at the bottom end of the clamping claw, a mounting groove is formed in the top of the sliding block, the mounting groove is narrow in upper portion and wide in lower portion, a jogging part matched with one side of the bottom of the inverted T-shaped block is arranged on one side, far away from the axis of the shell, of the mounting groove, an L-shaped block is connected in the mounting groove in a sliding mode, the L-shaped block is clamped on the other side of the bottom of the inverted T-shaped block, and a first spring is fixedly installed between the L-shaped block and the inner wall, close to one side of the axis of the shell, of the mounting groove.

Preferably, two guide grooves which are distributed up and down are formed in two side walls of the installation groove of the sliding block, two sliding columns which are distributed up and down are fixedly installed on two sides of the vertical portion of the L-shaped block, and the two sliding columns are respectively and slidably connected in the guide grooves.

Preferably, the lower half part of the clamping claw is inclined, the top end of the clamping claw is close to the axis of the shell, the upper half part of the clamping claw is vertical, and the rubber strips are arranged in an array along the length direction of the clamping claw.

Preferably, the holding part comprises two clamping strips hinged to two sides of the upper half part of the clamping claw, and a second spring is fixedly arranged between one side, far away from the axis of the shell, of the clamping strips.

Preferably, the clamping strips are inclined at one side close to the axis of the shell, and the clamping strips at two sides of the clamping claw are inclined towards the opposite side.

(III) beneficial effects

Compared with the prior art, the utility model provides the three-finger cylinder gripper, which has the following beneficial effects:

1. according to the three-finger cylinder gripper, one side of the bottom end of the inverted T-shaped block is inserted into an opening of a mounting groove through holding an assembly body of the inverted T-shaped block and a clamping claw, the assembly body is positioned at the lower side of the L-shaped block, the L-shaped block is pushed in the axial direction of a shell, the spring I is extruded and contracted until the bottom end of the inverted T-shaped block is integrally inserted into the mounting groove, and then the inverted T-shaped block is pushed outwards horizontally, so that the bottom end of the inverted T-shaped block is embedded between an embedded part of the mounting groove and the L-shaped block, and the assembly body of the inverted T-shaped block and the clamping claw is clamped and fixed; thereby achieving the purpose of convenient installation and disassembly of the clamping claw;

2. according to the three-finger cylinder gripper, when elastic fatigue occurs to the first spring, the first spring can be taken down from the sliding block and the L-shaped block through a cutting device such as a cutter, then a new first spring is replaced and welded between the sliding block and the L-shaped block, and the embedding effect on the inverted T-shaped block can be ensured only by replacing the first spring; even, the first spring does not need to be fixed with the L-shaped block and the sliding block, and two ends of the first spring are abutted between the L-shaped block and the end face of the mounting groove, so that the elasticity of the first spring can be utilized to push the L-shaped block to slide. Thereby achieving the purpose of conveniently replacing the clamping parts of the inverted T-shaped block and the clamping claw assembly body.

Drawings

Fig. 1 is a schematic perspective view of a three-finger cylinder gripper according to the present utility model;

fig. 2 is a schematic diagram of a three-finger cylinder gripper according to the present utility model;

fig. 3 is a schematic view of a three-finger cylinder gripper with a three-dimensional explosion structure at a clamping part.

In the figure: 1. a housing; 2. a cylinder; 3. a push rod; 4. a sliding block; 5. a chute; 6. a clamping component; 7. clamping claws; 8. a rubber strip; 9. a holding member; 61. an inverted T-shaped block; 62. a mounting groove; 63. an L-shaped block; 64. a first spring; 621. a guide groove; 631. a spool; 91. clamping the strip; 92. and a second spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, a three-finger cylinder gripper comprises a housing 1, wherein a cylinder 2 is fixedly installed in the housing 1, three push rods 3 are hinged to an output end array of the cylinder 2, sliding blocks 4 are hinged to the other ends of the push rods 3, sliding grooves 5 are formed in the top of the housing 1 corresponding to the array of the sliding blocks 4, and the sliding blocks 4 are driven to slide in the sliding grooves 5 through the telescopic action of the output shafts of the cylinder 2 and the connection action of the push rods 3. The top scarf joint of sliding block 4 has joint part 6, and the top fixed mounting of joint part 6 has gripper jaw 7, and the surface array of gripper jaw 7 is provided with rubber strip 8, and gripper jaw 7 lower half is the slope form, and the top is close to the axis of shell 1, and gripper jaw 7 upper half is vertical form, reduces the interval between gripper jaw 7 upper half to reduce gripper jaw 7 and follow the interval between when sliding block 4 is close to each other. The rubber strips 8 are arranged in an array along the length of the clamping jaw 7. The extrusion force and the friction force of the clamping claw 7 when clamping the workpiece are ensured. Two sides of the clamping claw 7 are movably connected with a holding part 9.

Referring to fig. 2-3, the clamping component 6 includes an inverted T-shaped block 61 fixedly mounted at the bottom end of the clamping claw 7, a mounting groove 62 is formed at the top of the sliding block 4, and two guide grooves 621 distributed up and down are formed on two side walls of the sliding block 4 located in the mounting groove 62. The mounting groove 62 is narrow at the top and wide at the bottom, a jogged part matched with one side of the bottom of the inverted T-shaped block 61 is arranged on one side of the mounting groove 62 far away from the axis of the shell 1, an L-shaped block 63 is connected in a sliding way in the mounting groove 62, and a first spring 64 is fixedly arranged between the L-shaped block 63 and the inner wall of one side of the mounting groove 62 close to the axis of the shell 1. The L-shaped block 63 is clamped on the other side of the bottom of the inverted T-shaped block 61 through the elasticity of the first spring 64. Thus, the L-shaped block 63 is matched with the embedded part of the mounting groove 62 to clamp the inverted T-shaped block 61, so that the assembly of the inverted T-shaped block 61 and the clamping claw 7 is convenient to detach and mount. Two sliding columns 631 are fixedly arranged on two sides of the vertical part of the L-shaped block 63, and the two sliding columns 631 are respectively and slidably connected in the guide groove 621. The L-shaped block 63 moving path is guided, so that the L-shaped block 63 moves more stably.

Referring to fig. 3, the holding member 9 includes two holding strips 91 hinged to both sides of the upper half of the holding claw 7, and a second spring 92 is fixedly installed between the sides of the holding strips 91 away from the axis of the housing 1. The holding strip 91 is inclined toward the axis of the housing 1, and the holding strips 91 on both sides of the holding claw 7 are inclined toward the opposite side. The end parts of the clamping strips 91 have a trend of approaching each other through the elasticity of the second springs 92, are clung to the surface of the workpiece, further clamp the workpiece, assist in matching with the clamping claws 7, carry out multi-point clamping on the workpiece, and improve the clamping stability.

Working principle: the assembly of the inverted T-shaped block 61 and the clamping claw 7 is held by hand, one side of the bottom end of the inverted T-shaped block 61 is inserted into an opening of the mounting groove 62 and is positioned at the lower side of the L-shaped block 63, the L-shaped block 63 is pushed towards the axial direction of the shell 1, the first spring 64 is extruded and contracted until the bottom end of the inverted T-shaped block 61 is integrally inserted into the mounting groove 62, and then the inverted T-shaped block 61 is pushed outwards horizontally, so that the bottom end of the inverted T-shaped block 61 is embedded between an embedded part of the mounting groove 62 and the L-shaped block 63, and the assembly of the inverted T-shaped block 61 and the clamping claw 7 is clamped and fixed;

the output shaft of the air cylinder 2 is contracted, and the sliding block 4 is driven to slide in the sliding groove 5 in cooperation with the connection effect of the push rod 3, so that the clamping claws 7 are driven to approach each other, the rubber strip 8 is abutted against the surface of a workpiece to clamp the workpiece, the workpiece and the clamping claws 7 are subjected to the interaction force, the clamping claws 7 are subjected to the outward thrust, the inverted T-shaped block 61 is blocked by the inner wall of the sliding block 4, which is positioned at the mounting groove 62, and the clamping stability of the clamping claws 7 on the workpiece is ensured;

when the clamping claw 7 approaches to the workpiece, the end parts of the clamping strips 91 are abutted against the surface of the workpiece, the clamping strips 91 on two sides of the clamping claw 7 deflect towards the opposite sides under the action of mutual extrusion, the second spring 92 is extruded, the extrusion force of the clamping strips 91 and the workpiece is ensured through the elasticity of the second spring 92, and then the clamping effect of the clamping claw 7-degree workpiece is matched, so that the workpiece is clamped at multiple points, and the clamping stability is improved.

When the first spring 64 is elastically fatigued, the first spring 64 can be removed from the sliding block 4 and the L-shaped block 63 through a cutting device such as a cutter, and then a new first spring 64 is replaced and welded between the sliding block 4 and the L-shaped block 63, and the embedding effect on the inverted T-shaped block 61 can be ensured only by replacing the first spring 64; even, the first spring 64 does not need to be fixed with the L-shaped block 63 and the sliding block 4, and the two ends of the first spring 64 are abutted between the L-shaped block 63 and the end face of the mounting groove 62, so that the elasticity of the first spring 64 can be utilized to push the L-shaped block 63 to slide.

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

Claims

1. The utility model provides a three indicate cylinder tongs, includes shell (1), the inside fixed mounting of shell (1) has cylinder (2), the output array of cylinder (2) articulates there are three push rod (3), the other end of push rod (3) articulates there is sliding block (4), spout (5) have been seted up corresponding sliding block (4) array in the top of shell (1), its characterized in that: the top of sliding block (4) is embedded and connected with joint part (6), the top fixed mounting of joint part (6) has gripper jaw (7), the surface array of gripper jaw (7) is provided with rubber strip (8), the both sides swing joint of gripper jaw (7) has holding part (9).

2. The three-finger cylinder gripper of claim 1, wherein: the clamping component (6) comprises an inverted T-shaped block (61) fixedly installed at the bottom end of the clamping claw (7), a mounting groove (62) is formed in the top of the sliding block (4), the mounting groove (62) is narrow and wide at the bottom, one side, far away from the axis of the shell (1), of the mounting groove (62) is provided with a jogged part matched with one side of the bottom of the inverted T-shaped block (61), an L-shaped block (63) is connected in the mounting groove (62) in a sliding mode, the L-shaped block (63) is clamped on the other side of the bottom of the inverted T-shaped block (61), and a first spring (64) is fixedly installed between the L-shaped block (63) and the inner wall, close to one side of the axis of the shell (1), of the mounting groove (62).

3. The three-finger cylinder gripper of claim 2, wherein: two guide grooves (621) which are distributed up and down are formed in the two side walls of the installation groove (62) of the sliding block (4), two sliding columns (631) which are distributed up and down are fixedly installed on the two sides of the vertical portion of the L-shaped block (63), and the two sliding columns (631) are respectively and slidably connected in the guide grooves (621).

4. The three-finger cylinder gripper of claim 1, wherein: the lower half part of the clamping claw (7) is inclined, the top end of the clamping claw is close to the axis of the shell (1), the upper half part of the clamping claw (7) is vertical, and the rubber strips (8) are arranged in an array along the length direction of the clamping claw (7).

5. The three-finger cylinder gripper of claim 1, wherein: the holding part (9) comprises two clamping strips (91) hinged to two sides of the upper half part of the clamping claw (7), and a spring II (92) is fixedly arranged between one side, far away from the axis of the shell (1), of the clamping strips (91).

6. The three-finger cylinder gripper of claim 5, wherein: the clamping strips (91) are inclined at one side close to the axis of the shell (1), and the clamping strips (91) at two sides of the clamping claw (7) are inclined towards the opposite side.