An intersecting line circular seam welding device

Abstract

The invention relates to an intersecting line girth welding device which is a circular tube girth welding device, and in particular relates to an automatic intersecting line girth welding machine between circular tubes, which has very high requirements for the welding line tracking technology, belonging to the technical field of a welding device. The intersecting line girth welding device mainly comprises a base, a tail seat adjusting device, a power driving device, a workpiece clamping device, a workpiece locating device, a cam mechanism, a welding gun adjusting device, an arc light protecting screen and the like. Compared with the prior art, the invention has the prominent substantial characteristics and remarkable progresses that the working procedure of defining a point is omitted, location and automatic welding are directly combined into the same station to be completed, the welding technique is simplified, the efficiency is improved, a spot welding fixture is omitted, and the accuracy of a welding part and the welding line tracking accuracy are guaranteed.

Description

technical field [0001] The invention relates to an intersecting line circumferential seam welding device, which relates to a circular pipe circumferential seam welding device, more specifically an automatic circular pipe and circular pipe intersecting line circumferential seam welding machine, and its welding seam tracking technical requirements are quite high , belonging to the technical field of welding equipment. Background technique [0002] At present, in the field of industrial manufacturing, the automatic welding of round pipes usually adopts the method of assembling and spot welding. First, the "tee pipe" and the "connecting pipe" are spot welded together, and then welded. This welding method, although loading and unloading the workpiece is relatively easy, but the process is complicated and the labor cost is high. [0003] For the welding of the intersecting line of the pipeline, the robot or numerical control system is usually used to adjust the posture and positi...

AI Technical Summary

Problems solved by technology

As far as the machine tool tailstock is concerned, there are dovetail slide seat type, double guide post slide seat type, etc. Although their structure is strong and durable, they are also complicated and costly

[0005] Patent 200710171948.3 "Intersecting Line Double Ring Seam Automatic Welding Machine" discloses a device that synchronizes the movement of the welding torch and the rotation of the workpiece, but the toolbox of the device is equivalent to the setting of the tailstock in this case patent. The setting of the tailstock is relatively fixed and there is no precise movement However, in actual production, the lengths of the workpieces we process are different. If an automation equipment can only process workpieces of one size, it is obvious that the adaptability of the equipment is too small, and the waste of automation equipment resources is huge. Increase

[0006] In addition, three stepping motors are used in the above-mentioned existing patents to drive the hollow shaft respectively, which is equivalent to the rotation of the main shaft and the movement of the welding torch at both ends of the patent in this case. Due to the lack of a precise and reasonable synchronization mechanism, the synchronization between the rotation of the workpiece and the movement of the welding torch will produce deviations and Accumulated deviations, which seriously affect the quality and yield of product processing

Simultaneously, the mechanism of the invention driving the reciprocating motion of the welding torch is also not stable enough

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