Laser welding device of solar flat plate collector

Abstract

The invention relates to a laser welding device of a solar flat plate collector. The laser welding device is characterized by comprising a frame, a solid pulse laser system and a control system. An XY-axis servo driving mechanism is arranged on the frame, a Z-axis lifting mechanism and a laser welding head are arranged on the XY-axis servo driving mechanism through a dragging plate, and a rotating table is arranged below the laser welding head. The laser welding device adopts a high-power solid pulse laser system, a high-speed precise linear module is used as an XY-axis transmission guiding component, the device operates stably, device welding speed is increased, welding point density is increased, welding quality is improved, and heat transmission effect of the solar flat plate collector is improved. The Z-axis lifting mechanism adopts a series connection structure of three cylinders, the laser welding head is lifted and lowered stably in subsection mode, damage such as copper pipe dent is reduced, product quality is improved, and production cost is reduced. A double-station rotating table structure is adopted, operators do not need to walk back and forth, labor intensity is lowered, and production efficiency is increased.

Description

technical field [0001] The invention relates to a laser welding device, in particular to a laser welding device for a solar flat plate heat collector. Background technique [0002] Solar flat plate collectors composed of copper tubes and aluminum plates welded are more and more widely used due to their advantages of high heat exchange efficiency, high mechanical strength and long service life. However, due to the difficulty of welding such solar flat panel collectors, laser welding equipment is usually used for welding. The welding speed, the size of the welding point and the density of the welding point are all restricted. At the same time, the XY axis linear motion pair adopts steel structural parts, the self-weight of the components is large, the inertia of the start and stop actions is large, the movement speed and movement accuracy It is greatly restricted and also affects the welding speed. The welding speed of the equipment is only 3m / min, the solder joints are small...

AI Technical Summary

Problems solved by technology

However, due to the difficulty of welding this kind of solar flat collector, laser welding equipment is usually used for welding. Advanced laser welding equipment, the welding speed, welding point size and welding point density are all restricted. At the same time, the XY axis linear motion pair adopts steel structural parts. It is greatly restricted and also affects the welding speed. The welding speed of the equipment is only 3m / min, the solder joints are small, the solder joints are sparsely arranged, and the welding quality is unstable, so that the heat transfer of the solar panel collector is poor and the thermal efficiency is low.

At the same time, in the existing laser welding equipment for solar flat panel heat collectors, the laser welding head is usually controlled by a cylinder to lift up and down. During the operation, the rollers used to compress the copper tube are very likely to cause pressure on the tube, which makes the copper tube Damage such as dents occurs, thereby reducing product quality, and even causing product scrapping, wasting raw materials, and increasing production costs

In addition, most of the worktables for clamping aluminum plates and copper tubes used in existing laser welding equipment for solar flat collectors are workbenches with linear moving stations. After welding a solar flat collector, the operator It is necessary to walk back and forth at both ends to complete the clamping and unloading, or to increase the number of operators to solve this problem. The operation is labor-intensive and the production efficiency is low.

Images