Towel rack laser welding device with double welding heads and welding method

Abstract

A towel rack laser welding device with double welding heads comprises a material feeding belt, a rotary grabbing mechanism, a laser welding head and a laser welding head, and the discharging end of the material feeding belt faces the rotary grabbing mechanism; the feeding end of the material conveying belt faces the rotary grabbing mechanism; the rotary grabbing mechanism is arranged on the rotary platform and has three rotating positions including a material taking position, a welding position and a material placing position; the two sets of laser welding machines are arranged at the welding positions and located on the two sides of the towel rack; and the laser welding machine is movably arranged on the three-dimensional adjusting platform, and the laser welding machine is controlled to move according to a preset program. According to the structural characteristics of the towel rack, a welding track can be obtained according to a model, then a laser welding mode easy to control by a program is adopted, the two sets of laser welding machines located on the two sides of the towel rack during welding are arranged, laser welding is automatically carried out under the control of the three-dimensional adjusting platform according to a preset program, and full-automatic welding is achieved; the rotary grabbing mechanism grabs the towel rack and positions the towel rack in a vertical state at the same time, and the position randomness of the towel rack in the conveying process can be eliminated.

Description

technical field [0001] The invention relates to the field of welding, in particular to a towel rack laser welding device with double welding heads, which can grab the towel rack from a conveyor belt for welding. The two sides of the towel rack are continuously welded, and laser welding is automatically performed under the control of the three-dimensional adjustment platform according to the preset program, realizing fully automatic welding. After the welding is completed, the towel rack is put back on the production line; it also provides A laser welding method for realizing fully automatic laser welding. Background technique [0002] Most of the frame of the towel rack consists of two support rods and multiple hanging rods. Multiple hanging rods need to be welded at equal distances between the two support rods. Now most companies are welding towel racks. Positioning gear, backing and other original craftsmanship. The existing process has the problems of inaccurate positio...

AI Technical Summary

Problems solved by technology

Based on the diversity of towel rack materials and the inconsistency of wall thickness, it will inevitably lead to a variety of welding processes. At present, there are mainly four welding processes: brazing, manual gas welding, argon arc welding and resistance welding. These welding processes exist. The following defects: (1) For brazing: It is required that the threaded plugs of vertical pipes, horizontal pipes, and water inlets and outlets must be tightly fitted or fixed by spot welding. The processing of the inner hole of the vertical pipe requires high dimensional accuracy, and the weld will fall off after high temperature Abnormal, after high-temperature brazing, the product is seriously deformed, and plastic operations are required, and the equipment operation cost is high

(3) For argon arc welding, argon and carbon dioxide are needed for protection during the heating welding process. Pores, virtual welding, slag inclusions and missing welding will still occur during the welding process. In addition, arc radiation, high-frequency electromagnetic radiation and harmful gas

(4) For resistance welding, the multi-station welding of multiple horizontal tubes and vertical tubes of towel racks cannot meet the requirements, and there are great limitations in the welding process of towel racks, which can only be applied to specific towel racks

[0004] Regardless of the welding method, based on the fact that the welding trajectory of the mating surface of the horizontal tube of the towel rack and the vertical tube is a curve, it is currently difficult to realize automatic welding. Currently, the trajectory suitable for automatic welding is straight and circular, and cannot match the conveyor belt. Only a single welding head can be used. Step by step welding, low efficiency

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