Cup joint hollow copper pipe manufacturing method and device based on laser cutting and welding

Abstract

The invention provides a cup joint hollow copper pipe manufacturing method based on laser cutting and welding. The cup joint hollow copper pipe manufacturing method includes the following steps that one end of a hollow copper core is inserted into a hollow copper pipe; an electronic optical shutter beam splitter is connected to the output end of a laser device; welding laser beams are output to conduct fixed point welding; cutting laser beams are output to cut off the hollow copper core; a pipe side end laser circumferential weld of a cup joint section is welded; the cup joint section continuously rotates at a constant speed, and fusion brazing filler metal is controlled to drop into a core side end of the cup joint section from a flow guide pipe in an inclined manner; welding laser beams are output, and laser fusion brazing is achieved; the hollow copper pipe with one welded end is overturned horizontally by 180 degrees; and the above steps are repeatedly executed, and welding of the other end of the hollow copper pipe is completed. A cup joint section welding connector obtained through the method comprises the high-quality pipe side end laser circumferential weld and one smooth laser fusion soldered seam, the problem that leakage is easy is solved, and the sufficient overall strength mechanical property of the cup joint connector is guaranteed. The invention further provides a cup joint hollow copper pipe manufacturing device.

Description

technical field [0001] The invention belongs to the field of industrial automation, and in particular relates to a preparation method and device for socketed hollow copper tubes based on laser cutting and welding. Background technique [0002] With the technical development of the air conditioning and refrigeration industry and the further strict control of environmental protection regulations, improving the heat transfer coefficient of the heat exchange unit itself is the key to improving the overall heat transfer performance of the heat exchanger and making up for the refrigeration performance caused by the replacement refrigerant itself. Necessary means of reducing. Based on the problem of cooling performance degradation of existing refrigerants and the lack of effective alternative working fluids, relevant companies and scientific research institutions have turned their research objects to the basic components of air conditioning and refrigeration - heat exchanger elemen...

AI Technical Summary

Problems solved by technology

However, for the lap welding of socket pipes, since the welding structure itself requires sufficient welding area to ensure the overall strength and mechanical properties of socket joints, single-pass laser welding cannot meet the requirements, and multiple passes of surfacing welding are required, which makes the process cumbersome , cost increases, limiting the application of laser welding in this field

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