Welding robot clamping structure

Abstract

The utility model discloses a clamping structure of a welding robot, which comprises an outer frame provided with moving grooves at two ends; the number of the clamping jaws is two, the two clamping jaws are arranged in the moving groove in a sliding mode, a double-outlet air cylinder for pushing the clamping jaws to move transversely is arranged in the moving groove, so that clamping of the clamping jaws is achieved, and due to the fact that the structure and the principle are the prior art, further details are not made here; a placing groove is further formed in the inner side face of the clamping jaw, a clamping assembly is arranged in the placing groove and comprises an abutting piece, the abutting piece is attached to the surface of a workpiece, and one side of the abutting piece exceeds or is flush with the inner side face of the clamping jaw; by means of the designed clamping assembly, the workpiece with the special-shaped face can be clamped in a wrapping mode, the problem that the surface of the workpiece is damaged due to the small contact face is avoided, dust on the surface of the workpiece is blown away according to requirements before welding, and the defects of an existing clamping structure in use are overcome by generating high negative pressure and conducting auxiliary adsorption on the workpiece.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding robots, and in particular relates to a clamping structure of a welding robot. Background Art

[0002] A welding robot is an industrial robot engaged in welding (including cutting and spraying). It is a multi-purpose, reprogrammable automatic control manipulator with three or more programmable axes. It is used in the field of industrial automation. The clamping structure is part of the welding robot and is mainly used to clamp and fix the workpiece to facilitate welding.

[0003] Currently, in welding processing, the parts being welded have different shapes. In order to ensure normal welding requirements, the workpiece needs to be firmly clamped. Therefore, the existing clamping mechanism uses a metal chuck to achieve clamping. However, when the contact point of the clamped special-shaped workpiece is small, excessive clamping will cause deformation of the workpiece surface. Therefore, there are great limitations in actual use and there is room for improvement. Utility Model Content

[0004] The purpose of the utility model is to provide a welding robot clamping structure to solve the problem in the background art that clamping of workpieces with special-shaped surfaces is prone to damage.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a welding robot clamping structure, including an outer frame, with movable grooves at both ends; two clamping jaws are provided and slidably arranged in the movable groove, and a double-outlet air cylinder is provided in the movable groove to push the clamping jaws to move horizontally, so as to realize the clamping of the clamping jaws. Since this structure and principle are all existing technologies, they will not be further described here; the inner side surface of the clamping jaw is also provided with a placement groove, and a clamping assembly is provided inside the placement groove, which includes a clamping member that fits with the surface of the workpiece, and one side of the clamping member exceeds or is flush with the position of the inner side surface of the clamping jaw, and the wrapping clamping of the special-shaped workpiece is achieved by the clamping member; a functional member is connected with the clamping jaw, and the end of the functional member is fitted with the clamping member, and a channel for blowing out and inhaling gas is formed between the clamping member and the functional member, so as to purge the surface of the workpiece as needed and achieve the purpose of auxiliary limiting.

[0006] Preferably, the abutting member comprises a sponge block, and a through hole is formed on the surface of the sponge block.

[0007] Preferably, the surface of the placement groove is evenly provided with connection holes, and the functional part includes a suction cup passing through the connection hole. The suction cup is fitted with the other side of the sponge block, and the suction cup is hot-melt connected to the through hole to form a whole, so as to avoid the through hole and the suction cup being misaligned and unusable when the sponge block is deformed.

[0008] Preferably, the ends of the multiple suction cups are connected to an air box, and the top of the air box is connected to an air pipe, which is connected to an external suction device. Before welding, when the surface of the workpiece needs to be blown, air is supplied toward the suction cup through the suction device, so that the gas ejected from the suction cup blows the surface of the workpiece. When the workpiece needs to be clamped, the sponge block is first wrapped around the workpiece, and then the suction device is used to suck air, so that negative pressure is generated at the position of the suction cup to achieve auxiliary adsorption of the workpiece.

[0009] Preferably, a plurality of support plates are provided inside the placement groove, and the support plates are fitted with the other side of the sponge block to prevent the deformation and damage of the suction cup caused by excessive squeezing of the sponge block.

[0010] Preferably, the air box is fixed to the outer side of the clamping jaw by bolts or glue.

[0011] Preferably, it further comprises a connecting head which is mounted on the top of the outer frame, and the top of the connecting head is connected to the welding robot.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The designed clamping component can achieve wrapping clamping for workpieces with special-shaped surfaces, avoiding the problem of damage to the workpiece surface caused by a small contact area. At the same time, before welding, the dust on the workpiece surface can be blown away as needed, and auxiliary adsorption of the workpiece can be achieved by generating high negative pressure, thus improving the shortcomings of the existing clamping structure in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection between the clamping jaw and the clamping assembly of the utility model;

[0016] Figure 3 For this utility model Figure 2 Schematic diagram of the structure with the sponge block removed.

[0017] In the picture:

[0018] 100, outer frame; 101, clamping claw; 101a, placement slot; 101b, connection hole; 102, connector;

[0019] 200, sponge block; 200a, through hole; 201, air box; 202, air tube; 203, suction cup; 204, support plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 3 The utility model provides a technical solution: a welding robot clamping structure, including

[0022] The outer frame 100 has movable slots at both ends;

[0023] The clamping jaws 101 are provided with two and are slidably arranged in the movable groove. The movable groove is provided with a double-outlet cylinder for pushing the clamping jaws 101 to move laterally, thereby achieving the clamping of the clamping jaws 101. Since this structure and principle are all existing technologies, they will not be further described here;

[0024] The inner side of the clamping jaw 101 is also provided with a placement groove 101a, and a clamping assembly is provided inside the placement groove 101a. The clamping assembly includes

[0025] The pressing member is in contact with the surface of the workpiece, and one side of the pressing member is beyond or flush with the inner side surface of the clamping jaw 101, so that the workpiece with a special-shaped surface can be wrapped and clamped by the pressing member;

[0026] The functional part is connected with the clamping jaw 101 through the end of which is fitted with the abutting part. A channel for blowing out and sucking gas is formed between the abutting part and the functional part, so as to purge the surface of the workpiece as needed and achieve the purpose of auxiliary limiting.

[0027] In this embodiment, preferably, the pressing member includes a sponge block 200 , and a through hole 200 a is formed on the surface of the sponge block 200 .

[0028] In this embodiment, preferably, connection holes 101b are evenly opened on the surface of the placement groove 101a, and the functional part includes a suction cup 203 passing through the connection hole 101b. The suction cup 203 is attached to the other side of the sponge block 200, and the suction cup 203 is hot-melt connected to the through hole 200a to form a whole, so as to avoid the through hole 200a and the suction cup 203 being misaligned and unusable when the sponge block 200 is deformed.

[0029] In this embodiment, preferably, the ends of multiple suction cups 203 are connected to an air box 201, and the top of the air box 201 is connected to an air pipe 202, which is connected to an external suction device. Before welding, when it is necessary to blow the surface of the workpiece, gas is supplied toward the suction cup 203 through the suction device, so that the gas ejected from the suction cup 203 blows the surface of the workpiece. When it is necessary to clamp the workpiece, the sponge block 200 is first wrapped around the workpiece, and then the suction device sucks air, so that negative pressure is generated at the position of the suction cup 203 to achieve auxiliary adsorption of the workpiece.

[0030] In this embodiment, preferably, a plurality of support plates 204 are further provided inside the placement groove 101 a , and the support plates 204 are fitted with the other side of the sponge block 200 to prevent the deformation and damage of the suction cup 203 caused by excessive squeezing of the sponge block 200 .

[0031] In this embodiment, preferably, the air box 201 and the outer sides of the clamping jaws 101 are fixed by bolts or glue.

[0032] In this embodiment, preferably, a connecting head 102 is further included. The connecting head 102 is installed on the top of the outer frame 100, and the top of the connecting head 102 is connected to the welding robot.

[0033] Although embodiments of the present invention have been shown and described (see the detailed description above for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding robot clamping structure, comprising The outer frame (100) has movable slots at both ends; Two clamping jaws (101) are provided and are slidably arranged in the movable groove; Its characteristics are: The inner side surface of the clamping jaw (101) is also provided with a placement groove (101a), and a clamping assembly is provided inside the placement groove (101a). The clamping assembly includes A pressing piece is fitted with the surface of the workpiece, and one side of the pressing piece is beyond or flush with the inner side surface of the clamping jaw (101); The functional part is connected with the clamping claw (101) through the end of the functional part and fits with the pressing part, and a channel for blowing out and sucking gas is formed between the pressing part and the functional part.

2. A welding robot clamping structure according to claim 1, characterized in that: The pressing member comprises a sponge block (200), and a through hole (200a) is provided on the surface of the sponge block (200).

3. The welding robot clamping structure according to claim 2, characterized in that: The surface of the placement groove (101a) is evenly provided with connection holes (101b), and the functional part includes a suction cup (203) passing through the connection hole (101b), the suction cup (203) is attached to the other side of the sponge block (200), and the suction cup (203) is hot-melt connected to the through hole (200a).

4. The welding robot clamping structure according to claim 3, characterized in that: The ends of the plurality of suction cups (203) are connected to an air box (201), the top of the air box (201) is connected to an air pipe (202), and the air pipe (202) is connected to an external air suction device.

5. The welding robot clamping structure according to claim 2, characterized in that: A plurality of support plates (204) are further provided inside the placement groove (101a), and the support plates (204) are fitted with the other side of the sponge block (200).

6. The welding robot clamping structure according to claim 4, characterized in that: The air box (201) and the outer sides of the clamping jaws (101) are fixed by bolts or glue.

7. The welding robot clamping structure according to claim 1, characterized in that: It also includes a connecting head (102), which is installed on the top of the outer frame (100), and the top of the connecting head (102) is connected to the welding robot.

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