Wire feeding device for arc welding robot

Abstract

The invention provides a wire feeding device for an arc welding robot. The wire feeding device comprises at least two sections of wire feeding tube, every two sections of wire feeding tube are connected through a connecting piece. Each section of feeding tube comprises a tube body, a sealing upper cover and a sealing lower cover, middle holes are formed in the centers of the sealing upper covers and the centers of the sealing lower covers, welding wires penetrate through the holes, and convex columns are arranged on the outer wall of one end of the pipe body; the connecting pieces sleeve the other end of the tube body, and the connecting pieces are rotationally hung on the convex columns of the next section of wire feeding pipe. According to the wire feeding device, winding and knotting ofthe welding wires are prevented, the traditional integrated wire feeding tube is divided into a plurality of sections and each section is rotationally connected through the connecting pieces, so thatthe sealing performance of the wire feeding tube is guaranteed, abnormal abrasion caused by dust, foreign matters and the like entering the welding wire tube is prevented, and meanwhile, the flexibility of the wire feeding tube is guaranteed to a certain degree. In addition, balls are arranged at the two ends of the tube body correspondingly, and in the wire feeding process, the balls roll relative to the welding wires, so that the wire discharging stability of the wire feeding device is improved, and the wire feeding resistance is reduced.

Description

technical field [0001] The invention relates to the field of arc welding robots, in particular to a wire feeding device for arc welding robots. Background technique [0002] Arc welding robots are industrial robots used for automatic arc welding. The arc welding robot is composed of a teaching box, a control panel, a robot seat, an automatic wire feeding device, and a welding power supply. Continuous trajectory control and point-position control can be realized under the control of the computer. It can also use the linear interpolation and circular interpolation functions to weld space welds composed of straight lines and arcs. With the development of automated manufacturing, arc welding robots have gradually replaced manual production operations. [0003] At present, the wire feeding tube (wire feeding device) of the welding machine needs to be replaced after being used for a period of time, and the welding wire is often blocked when it is sent out from the wire feeding ...

AI Technical Summary

Problems solved by technology

[0003] At present, the wire feeding tube (wire feeding device) of the welding machine needs to be replaced after being used for a period of time, and the welding wire is often blocked when it is sent out from the wire feeding tube. It moves and wears the conductive head at the end of the wire feeding tube, which reduces the conductivity. There are normal wear and tear, and there are also abnormal wear caused by dust and foreign matter entering the welding wire tube, especially during the production process. Sometimes the welding wire will With static electricity, foreign matter such as dust and iron filings will be brought into the welding wire tube, which will aggravate abnormal wear and tear, and the foreign matter will cause the wire feeding tube to pass through

[0004] In order to solve the above problems, Chinese patents with application numbers of 201110136944.8 and 201110153770.6 disclose two kinds of mechanisms of new automatic welding machine wire feeding tubes. A new type of mechanism of automatic welding machine wire feeding tubes. The end entrance of the wire tube is equipped with a dust-proof sealing ring to overcome the abnormal wear of the wire feed tube, prolong the service life, and ensure the smooth feeding of the welding wire. However, due to the limitation of the wire feeding distance, a longer wire feed tube needs to be designed , it is also necessary to ensure the flexibility of the wire feeding tube. The above-mentioned disclosed technology cannot solve this problem and needs to be improved urgently.

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