Automatic welding mechanism for curved surface of car body

Abstract

The invention provides an automatic welding mechanism for a curved surface of a car body. The automatic welding mechanism comprises a base, a carrying platform, a worktable and a pair of welding tongs, wherein the carrying platform is installed on the base, the carrying platform can slide along the lateral direction of the base, the worktable is installed on the carrying platform, the worktable can longitudinally slide on the carrying platform, the welding tongs can be installed on the worktable, and the welding tongs can rotate on the worktable. The automatic welding mechanism has the beneficial effects that the automatic welding mechanism is simple in structure, convenient to operate, labor-saving, high in working efficiency, high in quality of welding point and high in stability.

Description

technical field [0001] The invention relates to a welding device, in particular to an automatic welding mechanism for a curved surface of a vehicle body. Background technique [0002] At present, the mature straight-line welding technology of car body includes manual spot welding, fixed welding with multiple welding tongs and robot welding. [0003] The manual spot welding equipment is simple, and an integrated suspension spot welding machine is used, and each welding spot on the body plane is welded in turn by manual operation welding tongs. Manual electric welding is prone to problems such as inaccurate manual positioning, large deviation of welding angle, uneven distribution of solder joints, unstable quality of solder joints, and high work intensity of workers. Therefore, the product quality fluctuates greatly, and the rework rate and scrap rate are relatively high. [0004] Fixed welding with multiple welding tongs is to use multiple welding tongs to weld at fixed posi...

AI Technical Summary

Problems solved by technology

However, it is only suitable for the welding of workpieces with relatively small distribution density of solder joints. The investment in equipment is large, the specialization is strong, there are many fault points, and the flexibility is poor. It cannot be used in large areas, and has great limitations.

[0005] Robotic welding is performed by a resistance welding robot, which is suitable for workpieces with high welding process precision and complex operations. However, due to the complexity of its equipment, the cost of single investment and subsequent repairs and maintenance is relatively high, which is not conducive to rapid promotion.

Moreover, robot welding requires a large enough welding space, relatively few interference points, and a large workshop space, which has certain limitations on the layout of the workshop process.

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