Automatic welding system and automatic welding method

Abstract

The invention discloses an automatic welding system, which automatically performs welding work through program control, and is characterized in that it includes: a laser source for generating laser beams; a laser scanning head for receiving laser beams from the laser source and The beam is focused at a target position in the working area; a vision system; and a moving device for moving a product to be welded under the guidance of the vision system so that the part to be welded of the product coincides with the target position so that the focused laser beam The solder provided at the part to be soldered of the product is heated, thereby achieving soldering. Compared with the prior art, the present invention uses the laser scanning head to replace the traditional soldering iron head, therefore, the size of the solder joint can be reduced, the welding accuracy can be improved, and since there is no need for direct physical contact with the solder, there is no solder The problem of sticking and cleaning the sticking solder improves soldering efficiency and saves solder.

Description

technical field [0001] The present invention relates to a system and method for automatically performing soldering on a product, in particular to a system and method for automatically performing soldering on a circuit board. Background technique [0002] In the prior art, generally on the programmable mobile device, for example, on the multi-degree-of-freedom robot, a soldering iron tip is installed, and the soldering iron tip moves to the position to be welded on the circuit board to be soldered under the guidance of the vision system, and then Weld the parts to be welded. Before soldering, the tip of the soldering iron needs to be preheated to a predetermined temperature. However, this welding technique has the following disadvantages: [0003] 1) Due to the heat conduction characteristics of the soldering iron tip, its heat is continuously dissipated to the outside world. Therefore, it is difficult to stably control the temperature of the soldering iron tip at the prede...

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Problems solved by technology

[0003] 1) Due to the heat conduction characteristics of the soldering iron tip, its heat is continuously emitted to the outside world. Therefore, it is difficult to stably control the temperature of the soldering iron tip at the predetermined temperature, and there are large temperature fluctuations, which affect the welding quality;

[0004] 2) The physical size of the soldering iron tip is large (because the physical size of the soldering iron tip is too small and it is prone to oxidation), usually the tip diameter of the soldering iron tip is roughly 0.5mm to 0.8mm, so the spacing between the solder points is smaller In the process of high-precision soldering, it is easy for the solder between two adjacent solder joints to overlap each other. Therefore, the existing soldering iron tip cannot be used for high-precision soldering work with small spacing;

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