CN203509407U - Spot welding tool - Google Patents

Abstract

The utility model discloses a spot welding tool, which comprises a clamp body of a hand-held welding tongs, a clamping mechanism for clamping a workpiece is arranged at the jaw of the clamp body, and the clamping mechanism includes a Two splints on the mouth, one of which is provided with a positioning pin, and the other splint is provided with a pressing block cooperating with the positioning pin, and the pressing block has a hole for the positioning pin to insert. Compared with the existing technology, this tooling adopts the output force of the pliers to replace the cylinder of the traditional fixture to realize the grabbing, assembling, pressing and loosening of the workpiece. It is suitable for the clamping and positioning of small parts and can ensure the reasonableness of small parts Positioning, tooling production costs are low, and the operation is simple.

Description

A spot welding tool

technical field

The utility model relates to automobile tooling, in particular to a spot welding tool used for welding automobile body-in-white. the

Background technique

At present, about 90% of the welding on the car body is spot welding, and each car has more than 4000 welding points. Before spot welding, the tooling for positioning the workpiece is mainly a fixture. Through the fixture, the workpiece can be quickly and accurately positioned and supported and maintained properly, so that all the workpieces produced can be fixed within a specific range, ensuring the precision and interchangeability of the products. the

With the streamlining of automobile modeling and the higher and higher requirements for body structure design, the welding process is becoming more and more difficult, and the investment in fixtures is also getting higher and higher. The larger the workshop area, the better. For the welding of larger stamping parts, the layout space of the fixture positioning unit is sufficient, which can ensure better performance and dimensional consistency of the welded assembly. However, for parts with small welding size, it is often restricted by these factors. Unreasonable fixture design leads to poor welding consistency and insufficient process capability. the

The current welding fixture mainly has the following shortcomings:

1. Due to the size limitation of small parts, it is difficult to achieve sufficient positioning on the fixture;

2. The welding operation is more difficult and prone to quality defects (such as welding shunt);

3. The working area cannot be reduced, and the utilization rate of the plant is not high. the

Utility model content

The technical problem to be solved by the utility model is to provide a spot welding tool for positioning the small parts of the automobile body-in-white during spot welding, ensuring reasonable positioning of the small parts and convenient operation. the

In order to solve the above-mentioned technical problems, the technical solution adopted in the utility model is: a kind of spot welding tool, comprises the clamp body of hand-held welding tongs, is provided with the clamping mechanism for clamping workpiece at the jaw of this clamp body; The clamping mechanism includes two splints arranged on the mouth of the pliers, one of which is provided with a positioning pin, and the other splint is provided with a pressing block that cooperates with the positioning pin, and the pressing block has a hole for the positioning pin to be inserted into. hole. the

There are two positioning pins and pressing blocks. the

The splint is U-shaped, and the positioning pins and pressing blocks are respectively arranged on both sides of the splint. the

The body of the pliers is provided with a locking mechanism for locking the body of the pliers after clamping by the clamping mechanism. the

The utility model adopts the above-mentioned technical scheme. Compared with the prior art, the utility model adopts the output force of the pliers to replace the cylinder of the traditional fixture to realize the grasping, assembling, pressing and loosening of the workpiece, and is suitable for clamping small pieces. Tight positioning can ensure reasonable positioning of small parts, low cost of tooling production, and simple operation. the

Description of drawings

Fig. 1 is the structural representation of spot welding frock of the present utility model;

The marks in the above figures are: 1. clamp body; 2. upper splint; 3. lower splint; 4. positioning pin; 5. pressing block; 6. locking mechanism. the

Detailed ways

As shown in FIG. 1 , a spot welding tool of the present invention includes a clamp body 1 of a hand-held welding gun, and a clamping mechanism for clamping a workpiece is provided at the jaw of the clamp body 1 . When clamping a small piece, the operator holds the clamp body 1 and firmly holds the clamp arm of the clamp body 1, and the jaws drive the clamping mechanism to press together to realize the positioning and clamping of the workpiece. the

Specifically, the clamping mechanism includes two splints arranged on the jaws of the pliers, namely the upper splint 2 and the lower splint 3. The lower splint 3 is provided with a positioning pin 4, and the upper splint 2 is provided with a pin that cooperates with the positioning pin 4. The compression block 5 has a hole for positioning pin 4 to insert, and the workpiece is clamped between the compression block 5 and the lower platen, and the workpiece has a through hole for positioning pin 4 to pass through. Both the upper splint 2 and the lower splint 3 are U-shaped, and the upper splint 2 and the lower splint 3 are welded to the jaws of the pliers body 1 in the middle. There are two positioning pins 4 and pressing blocks 5, and the two positioning pins 4 are distributed at the ends of the two extensions of the lower splint 3, and the pressing blocks 5 are distributed at the ends of the two extensions of the upper splint 2. at the end. the

In addition, the clamp body 1 is also provided with a locking mechanism 6 for locking the clamp body 1 after clamping by the clamping mechanism. The inside of the clamp body 1 is connected with a connecting rod, and the two ends of the connecting rod are hinged with the upper and lower holding arms of the clamp body 1, and the connecting rod and the upper and lower holding arms of the clamp body 1 form a four-link structure. When the clamp body 1 is in the clamped state, the protruding corners of the inner connecting rods pry the locking mechanism 6, locking the four-link structure into a triangular structure. To open the clamping mechanism, the locking mechanism 6 must be pressed down to unlock. the

This handheld tool has the following advantages:

1. Follow the basic "N-2-1" principle of fixture positioning to ensure sufficient and reasonable workpiece positioning;

2. Realize the functions of grabbing, assembling, pressing and releasing the workpiece;

3. The output force of the vise is used to replace the cylinder of the traditional fixture to realize the clamping of the workpiece. And there is a locking mechanism to ensure the continuous and constant clamping force;

4. The positioning part of the tooling can be changed in combination with the shape of the parts to be welded, which is convenient for large-scale promotion;

5. This tool can be welded with fixed welding tongs or fixed spot welding machine, which reduces equipment investment and operation difficulty. the

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited by the above-mentioned methods, as long as various insubstantial improvements are made by adopting the method concept and technical solutions of the utility model, or Directly applying the ideas and technical solutions of the utility model to other occasions without improvement is within the protection scope of the utility model. the

Claims (4)

1. a spot-welding equipment, is characterized in that: comprise the vice body of hand-held soldering turret, at the jaw place of this vice body, be provided with the clamping device for holding workpiece;

Described clamping device comprises two clamping plate that are located on described jaw, and one of them clamping plate is provided with alignment pin, and another clamping plate are provided with the compact heap coordinating with alignment pin, and compact heap has the hole that allows alignment pin insert.

2. spot-welding equipment according to claim 1, is characterized in that: described alignment pin and compact heap are provided with two.

3. spot-welding equipment according to claim 2, is characterized in that: described clamping plate are U-shaped, and described alignment pin and compact heap are located at respectively the both sides of clamping plate.

4. according to the spot-welding equipment described in claim 1 or 2 or 3, it is characterized in that: described vice body is provided with the lockable mechanism of locking vice body after described clamping device clamps.