Grabbing clamp for welding robot

Abstract

The utility model discloses a grabbing clamp for a welding robot, which comprises a clamp seat, centering cylinders, a conductive brush and a clamping jaw are arranged on two sides of the clamp seat, the conductive brush is positioned between the two sets of centering cylinders, the clamping jaw is connected with the centering cylinders, the centering cylinders are provided with driving blocks, the clamping jaw is provided with clamping arms, clamping blocks and insulating cushion blocks, and the clamping arms are connected with the clamping blocks. The clamping arms are symmetrically arranged at the two ends of the centering air cylinder, the bottoms of the clamping arms are connected with the driving block through bolts, the side ends of the clamping arms penetrate through the clamping arms and the insulating cushion blocks through the bolts and are connected with the clamping blocks, V-shaped grooves are formed in the inner sides of the clamping blocks, and boss insulating pads are laid on the end faces of the bolts and the clamping arms. The clamp has the advantages that high-precision positioning is achieved, the insulation isolation performance is improved, the service life of the clamp is prolonged, and the overall working efficiency of the clamp is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding fixtures, in particular to an improvement of a grabbing fixture of a welding robot. Background Art

[0002] With the rapid development of modern industry, welding robots are increasingly used in the manufacturing industry. During the assembly line welding process, Robot 1 automatically grasps the workpiece and places it at Robot 2, while Robot 2 automatically welds the workpiece. The welding current is high, necessitating insulation between the workpiece and the grasping robot. However, existing insulation methods often use plastic bushings, which are thin and have a low safety factor for high-current welding. Utility Model Content

[0003] (1) Technical problems solved

[0004] In response to the shortcomings of the existing technology, the utility model provides a grasping fixture for a welding robot, which has the advantages of high-precision positioning and improved insulation isolation performance, thereby increasing the service life of the fixture and overall work efficiency, and thus solves the problem that most existing isolation methods use plastic bushings, but the bushing wall thickness is relatively thin, resulting in a low insulation isolation safety factor for large current welding.

[0005] (2) Technical solution

[0006] In order to achieve the above-mentioned high-precision positioning, improve the insulation isolation performance, and thus improve the service life of the clamp and the overall work efficiency, the specific technical solution adopted by the utility model is as follows: it includes a clamp seat, and a centering cylinder, a conductive brush and a clamping claw are provided on both sides of the clamp seat. The conductive brush is located between the two groups of centering cylinders, and the clamping claw is connected to the centering cylinder. The centering cylinder is provided with a driving block, and the clamping claw is provided with a clamping arm, a clamping block, and an insulating pad. The clamping arm is symmetrically arranged at both ends of the centering cylinder, and the bottom of the clamping arm is connected to the driving block by a bolt, and the side end of the clamping arm passes through the clamping arm and the insulating pad by a bolt and is connected to the clamping block. A V-shaped groove is provided on the inner side of the clamping block, and the bolt and the end face of the clamping arm are paved with a boss insulating pad.

[0007] Furthermore, a plurality of mounting holes or positioning holes are provided on the surface of the fixture seat.

[0008] Furthermore, a sliding groove for the driving block to slide is provided at the upper end of the centering cylinder, and a connecting hole is provided at the bottom.

[0009] Furthermore, the conductive brushes are provided in two groups, the side ends of the conductive brushes are provided with mounting plates, and are vertically connected to the bottom of the fixture seat through the mounting plates, and buffer springs are also provided inside the conductive brushes.

[0010] Furthermore, the clamping arms are L-shaped components, and the two groups of clamping arms are arranged to open and close.

[0011] Furthermore, a heat dissipation groove is provided in the middle of the V-shaped groove, and the heat dissipation groove extends to the bottom of the clamping block.

[0012] (3) Beneficial effects

[0013] Compared with the prior art, the present invention provides a gripping fixture for a welding robot, which has the following beneficial effects:

[0014] The centering cylinder controls the drive block to slide back and forth in the slide, thereby driving the clamping arm to open or close. The bolt passes through the clamping arm, the insulating pad and the clamping block to connect, so that the clamping block and the clamping arm can be loosened and closed in unison. A V-groove is provided on the inner side of the clamping block, and a heat dissipation groove is provided in the middle of the V-groove. The end faces of the bolt and the clamping arm are paved with boss insulating pads. The V-groove is compatible with plates of different thicknesses and poor parallelism of the plates, has high-precision positioning, and improves the insulation isolation performance, thereby increasing the service life of the fixture and the overall work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is the second structural diagram of the present utility model;

[0018] Figure 3 It is a side view of the utility model;

[0019] Figure 4 It is a structural diagram of the clamping jaw 4 of the present invention;

[0020] Figure 5 This is a schematic diagram of the grabbing principle of the present utility model.

[0021] In the figure: the clamp base 1, the centering cylinder 2, the drive block 21, the slide groove 22, the conductive brush 3, the mounting plate 31, the clamping jaw 4, the clamping arm 41, the clamping block 42, the V-groove 421, the heat dissipation groove 422, the insulating pad 43, and the boss insulating pad 44. DETAILED DESCRIPTION

[0022] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0023] According to an embodiment of the present utility model, a grabbing fixture for a welding robot is provided.

[0024] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figure 1-4 As shown, according to an embodiment of the present invention, a gripping fixture for a welding robot includes a fixture base 1. A centering cylinder 2, a conductive brush 3, and a clamping jaw 4 are provided on both sides of the fixture base 1. The conductive brush 3 is located between the two sets of centering cylinders 2. The clamping jaw 4 is connected to the centering cylinder 2. The centering cylinder 2 is provided with a driving block 21. The clamping jaw 4 is provided with a clamping arm 41, a clamping block 42, and an insulating pad 43. The clamping arm 41 is symmetrically arranged at both ends of the centering cylinder 2. The bottom of the clamping arm 41 is connected to the driving block 21 by a bolt. The centering cylinder 2 drives the driving block 21. The side end of the clamping arm 41 is connected to the clamping block 42 by a bolt passing through the clamping arm 41 and the insulating pad 43. The inner side of the clamping block 42 is provided with a V-shaped groove 421. The end surface of the bolt and the clamping arm 41 is padded with a boss insulating pad 44. The driving block 21 drives the clamping arm 41, thereby realizing the loosening and closing of the clamping block 42.

[0025] In one embodiment, a plurality of mounting holes or positioning holes are provided on the surface of the clamp base 1 , thereby facilitating the installation of the centering cylinder 2 , the conductive brush 3 and the clamping jaw 4 on the clamp base 1 .

[0026] In one embodiment, the centering cylinder 2 has a slot 22 at its upper end for the driving block 21 to slide, and a connection hole at its bottom. The driving block 21 slides back and forth in the slot 22 to open or close the clamping arm 41.

[0027] In one embodiment, two sets of conductive brushes 3 are provided. Mounting plates 31 are provided at the side ends of the brushes 3, which are vertically connected to the bottom of the fixture base 1 via the mounting plates 31. Buffer springs 32 are also provided inside the brushes 3. The brushes 3 are cushioned against the workpiece surface by the buffer springs 32. During the conduction of current, the brushes 3, due to their excellent conductivity and appropriate contact structure, can prevent local burns on the fixture and workpiece surfaces caused by arcing and other factors.

[0028] In one embodiment, the clamping arms 41 are L-shaped members, and two groups of clamping arms 41 are arranged to open and close, so that the clamping is more stable.

[0029] In one embodiment, a heat dissipation groove 422 is provided in the middle of the V-shaped groove 421, and the heat dissipation groove 422 extends to the bottom of the clamping block 42. The V-shaped groove 421 can accommodate plates of different thicknesses and plates with poor parallelism, solving the problem of difficult clamping caused by non-parallel upper and lower surfaces.

[0030] Working principle: The centering cylinder 2 controls the driving block 21 to slide back and forth in the slide groove 22, thereby driving the clamping arm 41 to be loosened or closed. The bolt passes through the clamping arm 41, the insulating pad 43 and the clamping block 42 to connect, so that the clamping block 42 and the clamping arm 41 are loosened and closed in unison. A V-groove 421 is provided on the inner side of the clamping block 42, and a heat dissipation groove 422 is provided in the middle of the V-groove 421. The end faces of the bolt and the clamping arm 41 are paved with a boss insulating pad 44. The V-groove 421 is compatible with plates of different thicknesses and plate parallelism differences, has high-precision positioning, and improves the insulation isolation performance, thereby improving the service life of the clamp and the overall work efficiency.

[0031] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gripping fixture for a welding robot, comprising a fixture base (1), characterized in that: A centering cylinder (2), a conductive brush (3) and a clamping jaw (4) are provided on both sides of the clamp seat (1). The conductive brush (3) is located between the two groups of centering cylinders (2). The clamping jaw (4) is connected to the centering cylinder (2). The centering cylinder (2) is provided with a driving block (21). The clamping jaw (4) is provided with a clamping arm (41), a clamping block (42) and an insulating pad (43). The clamping arm (41) is symmetrically arranged at both ends of the centering cylinder (2). The bottom of the clamping arm (41) is connected to the driving block (21) by a bolt. The side end of the clamping arm (41) passes through the clamping arm (41) and the insulating pad (43) by a bolt and is connected to the clamping block (42). A V-shaped groove (421) is provided on the inner side of the clamping block (42). The end surface of the bolt and the clamping arm (41) is paved with a boss insulating pad (44).

2. A gripping fixture for a welding robot according to claim 1, characterized in that: The surface of the clamp seat (1) is provided with a plurality of mounting holes or positioning holes.

3. The gripping fixture for a welding robot according to claim 1, characterized in that: The upper end of the centering cylinder (2) is provided with a sliding groove (22) for the driving block (21) to slide, and the bottom is provided with a connecting hole.

4. The gripping fixture for a welding robot according to claim 1, characterized in that: The conductive brushes (3) are provided with two groups. The side ends of the conductive brushes (3) are provided with mounting plates (31) and are vertically connected to the bottom of the clamp seat (1) through the mounting plates (31). A buffer spring (32) is also provided inside the conductive brushes (3).

5. The gripping fixture for a welding robot according to claim 1, characterized in that: The clamping arms (41) are L-shaped components, and the two groups of clamping arms (41) are arranged to open and close.

6. The gripping fixture for a welding robot according to claim 1, characterized in that: A heat dissipation groove (422) is provided in the middle of the V-shaped groove (421), and the heat dissipation groove (422) extends to the bottom of the clamping block (42).

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