A wire feeding device for laser welding machine based on expansion alloy

Abstract

The invention provides a wire feeding device for a laser welding machine based on an expansion alloy, which relates to the technical field of laser welding. The wire feeding device for a laser welding machine based on an expansion alloy includes a coil, a primary transmission device, a straightening device and a wire feeding device. device, the primary transmission device is located below the coil, the straightening device is located between the coil and the primary transmission device, the wire feeding device is fixedly connected to the outside of the welding machine, and the left end of the installation ring is fixedly installed with A secondary transmission device, the bottom end of the secondary transmission device is fixedly equipped with folding rods. The wire feeding device for laser welding machine based on expansion alloy can be applied to welding wires of different diameters, and the transmission rate of welding wire can be adjusted independently, and when the welding temperature changes, the wire feeding rate will also change accordingly. It avoids the phenomenon of empty welding and welding wire accumulation when the welding temperature is too high or too low, and improves the quality of welding.

Description

technical field [0001] The invention relates to the technical field of laser welding, in particular to a wire feeding device for laser welding machines based on expansion alloys. Background technique [0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. In laser welding, welding wire is also required, but generally the weight of the laser welding head is lower. Considering the size and weight factors Generally, the coils loaded with welding wire are far away from the welding head, and a transmission system is required to transmit the long-distance welding wire to the welding head. However, due to the high concentration of laser welding energy and the fast processing speed, when the welding temperature does not match the wire feeding speed, it is easy to The phenomenon of empty welding and welding wire accumulation occurs. [0003] For example, application number 201220406078.X, the present invention di...

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Problems solved by technology

[0006] A welding wire feeder device designed by the above invention patent uses a temperature detector to detect the temperature of the welding place and connects the signal to the wire feeding device, which has achieved the effect of adjusting the wire feeding speed in response to the temperature , but did not indicate the specific temperature detector model, and how the wire feeding device changes the wire feeding speed after receiving the signal, which is difficult to implement and has a slow response speed

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