Welding torch, welding tip, and welding robot

Abstract

A welding torch includes a tip connection body, a holding member, a fixing member, and a welding tip. The holding member is displaceable in the axial direction of the tip connection. The fixing member fixes the welding tip in place in the axial direction of the welding tip when the fixing member is in contact with a smaller diameter portion, and the fixing member releases the welding tip when the fixing member is in contact with a larger diameter portion. With such configuration, the operation of attaching and removing a welding tip is simplified, the problem of tip fusion is solved, and that is suitable for automating the operation of attaching and removing a welding tip.

Description

technical field [0001] The invention relates to a welding torch for gas shielded arc welding, a welding tip and a welding robot. Background technique [0002] Generally, in gas shielded arc welding, a consumable copper electrode called a contact tip (hereinafter referred to as a welding tip) is used as a power feeding member for feeding power to a welding wire. A through hole is formed in the welding tip, and the welding wire is continuously fed into the through hole, and at the same time, a current is passed through the welding wire through the welding tip, whereby the welding wire coming out from the tip of the welding tip and the welding base material arc occurs between them. [0003] When gas-shielded arc welding is performed, the inner peripheral surface of the through hole at the tip of the welding tip rubs against the welding wire, and this part is worn away. As a result, the inner diameter of the through hole increases, causing deviation of the welding position and...

AI Technical Summary

Problems solved by technology

Therefore, when detaching the welding tip, it is necessary to rotate the screw, which is not sufficient in terms of simplification of detachment work.

In addition, copper with high electrical conductivity is usually used for the components of the welding torch, but copper is relatively soft, so the thread teeth of the screw may be crushed, and the welding tip cannot be properly fixed.

[0012] In addition, with the technology disclosed in Japanese Patent Application No. 2005-144548, it is very difficult to increase or decrease the force when disassembling the welding tip, and at the same time, it is necessary to remove the O-ring and spring separately, as disclosed in Japanese Patent Application No. 60-38673 Both technologies require complex actions such as rotating the screw when disassembling the welding tip. Therefore, neither technology is suitable for the automation of welding tip disassembly.

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