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The automatic assembly equipment for grinding and welding of surge protection device is a equipment for grinding, welding and automatic assembly of the internal chip of surge protection device, which is one of the important components of surge protection device. The shell is automatically loaded by vibrating disk, and the varistor, short insert and long insert are loaded by manual swing disk. According to the actual process, the surface of the meshing part is polished automatically, and the welding of different inserts is realized by high temperature welding, reflow welding, etc., and the semi-finished products are finally output.