Structure for treating torch cable for arc welding robot

Abstract

The invention relates to a welding torch treatment structure for a robot in the electric arc welding industry, wherein, a robot base is arranged on a ceiling part, and a first wrist unit which can rotate around a first shaft line is arranged on a front arm base; a second wrist unit which can rotate around a second shaft line is arranged on a first wrist unit; depending on the transmission mechanism, the welding torch which can rotate around an offset shaft is supported; the welding torch is arranged as the front end directing downward in the illustrated posture of the robot; the invention is provided with a linear guide and a slider via a support base, and a middle part of a torch cable or a welding wire delivery device is fixed and drawn by a tensioning device; the structure is also applicable to a wall-mounted type robot. Thereby, a welding torch cable structure is realized in an arc welding robot of a ceiling-suspension type or a wall-mounted type, capable of maintaining the behavior of the welding torch cable in a stable state as well as minimizing the interference of the welding torch cable with other objects.

Description

technical field [0001] The present invention relates to a welding torch handling structure of an industrial robot (hereinafter referred to as "arc welding robot" or simply "robot") for arc welding, and more particularly to an arc welding robot that is suspended from a ceiling or mounted on a wall unique torch cable handling construction. Background technique [0002] In the case of arc welding robots, the arm or welding torch that is fed into the front end of the robot in the narrow gap between the workpiece, jig, and peripheral equipment is often used for welding. In this case, since the area where the arm and the welding torch at the tip of the robot interfere with the surrounding area is narrow, there is no problem. However, the problem of interference with the surrounding area tends to arise in the torch cable. The reason is that the torch cable is loosened in order to ensure the stability of the feeding of the torch, and the length of this portion expands the area of ...

AI Technical Summary

Problems solved by technology

On the one hand, once the robot base 15 is fixed on the ceiling with the above-mentioned structure, and the whole robot is set upside down, difficulties will arise due to the limitation of the range of movement of the arm axis.

That is to say, due to the limitation of the flexibility of the welding torch cable, the range of movement of the first wrist unit and the second wrist unit is limited to a range smaller than ±180 degrees. In the case of the robot being suspended from the ceiling, There is a problem that it becomes difficult to work with the tip of the torch facing up and down, and it is hoped that this problem will be resolved

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