High-precision micro-fine metal sphere forming machine

Abstract

A high-precision micro-fine metal sphere forming machine comprises a melt kettle, a discharging valve and a sphere shooting kettle. The melt kettle is connected with the sphere shooting kettle through the discharging valve. The sphere shooting kettle comprises a liquid nitrogen valve, a high-voltage static head, a piezoelectric ceramic driver, a piezoelectric ceramic piece, a press-shoot rod, a microporous diamond piece, a sphere shaping area, a sphere forming area and a sphere outlet. The piezoelectric ceramic piece is connected with the piezoelectric ceramic driver and the press-shoot rod. The piezoelectric ceramic piece is driven by the piezoelectric ceramic driver to drive the press-shoot rod to do longitudinal piston type motion. The microporous diamond piece is arranged below the press-shoot rod. The high-voltage static head is arranged below the microporous diamond piece and overlapped with the upper part of the sphere shaping area. The sphere forming area and the sphere outlet are sequentially arranged below the sphere shaping area. The liquid nitrogen valve is arranged at the side of the sphere forming area and used for controlling the temperature of the sphere forming area. The forming machine is high in sphere forming speed and sphere diameter precision, good in sphere roundness and low in oxygen content.

Description

technical field [0001] The invention relates to the technical field of packaging materials for electronic products, in particular to a high-precision fine metal sphere forming machine. Background technique [0002] High-precision metal microspheres are widely used in modern industry. Welding materials BGA and CSP tin balls in the electronics industry, amalgam balls in the electric light source industry, zinc balls and nickel-based balls in the grinding industry, silicon balls, steel balls, copper balls, and stainless steel balls in the solar cell industry are all high-precision micro balls. Metal sphere. [0003] At present, the main processes for producing fine spheres are wire drawing, cutting, melting, and projection. The above methods are complicated in process and large in sphere diameter error, and cannot produce high-precision fine metal spheres. At the same time, they cannot be continuously fed during production. The flow of metal liquid fluctuates greatly, resulti...

AI Technical Summary

Problems solved by technology

The above method is complex in process and large in error in ball diameter, and cannot produce high-precision fine metal spheres. At the same time, it cannot continuously feed materials during production. The large fluctuations in the flow rate of metal liquid lead to uneven size of the spheres, low product qualification rate, and spheres are not round. low production time

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