Thermal fusion welding tool and technology of chip of vehicle ABS sensor

Abstract

The invention discloses a thermal fusion welding tool and technology of a chip of a vehicle ABS sensor. The thermal fusion welding tool of the chip of the vehicle ABS sensor comprises a module mechanism, a laser welding head and two or more welding stations. The thermal fusion welding tool of the chip of the vehicle ABS sensor has the advantages that the manner of conducting thermal fusion firstlyand then conducting laser welding is adopted, mechanical operation greatly improves the welding efficiency, and the productivity reaches 10000 pieces per day; before welding, the chip can be accurately located, protective gas is fed during laser welding, oxidation is effectively prevented, after fusion welding, blowing is immediately conducted, and rapid cooling is achieved; the whole welding process does not influence the chip, the anti-drawing performance of the welded chip is high, insufficient welding, welding missing and other phenomenon can be avoided, and the use stability of the ABS sensor in a later period can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of laser welding, in particular to a chip heat-melt welding tooling and technology for vehicle ABS sensors. Background technique [0002] Such as figure 1 and figure 2 As shown in the figure, it shows the terminal chip structure of a common automotive ABS sensor. There are chips and terminals on one side of the injection molded part, and grooves on the other side. During the processing, it is necessary to weld the chips and the overlapping parts of the terminals together, that is, A and B in the figure. The traditional welding method is spot welding, that is, the chip is in contact with the terminal and pressed together, and then the current is turned on, and the contact part of the workpiece is melted under the action of resistance heat, and a solder joint is formed after cooling. There are many defects in this method: first, in order to prevent loops, it needs to be welded twice, and both of them need ...

AI Technical Summary

Problems solved by technology

There are many defects in this method: first, in order to prevent loops, it needs to be welded twice, and both of them need manual operation, the welding efficiency is low, and each person can only weld about 3000 pieces a day, and this method will also appear Welding, missing welding and other phenomena, the welding quality cannot be guaranteed; in addition, the welding current will affect the chip, which may affect the normal use of the ABS sensor in the later stage

Therefore, considering the welding quality and welding efficiency, the traditional welding method needs to be improved urgently.

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