Wedge welding gold wire airflow control micro tension mechanism

Abstract

The invention discloses an airflow control mechanism for micro-tension of a wedge-bonding gold wire, and solves the problem that in the existing full-automatic wire bonding machine, the tension of the gold wire is not prone to control and the gold wire is prone to breakage. A front baffle (5) is fixedly arranged on the top end face of a substrate (1) on the front side of a compressed air blowing hole (4), a rear baffle (6) is fixedly arranged on the top end face of the substrate on the rear side of the compressed air blowing hole (4), a gold wire lifting gap (7) is arranged between the front baffle (5) and the rear baffle (6), a position sensor (11) is arranged at the upper end of the gold wire lifting gap (7), a gold wire (9) is movably arranged in the gold wire lifting gap (7), one end of the gold wire winds a gold wire winding motor (8) on the left side of the substrate (1) while the other end of the gold wire is arranged in the welding machine welding clamp (10) on the right side of the substrate (1), and the position sensor and the gold wire winding motor are respectively electrically connected with an industrial control computer. Effective control on the micro-tension of different gold wires is achieved.

Description

technical field [0001] The invention relates to a gold wire micro tension control mechanism, in particular to a gold wire tension control mechanism applied to a fully automatic wire bonding machine. Background technique [0002] The automatic wire bonding machine can realize the functions of wire bonding, substrate heating, automatic wire feeding, pressure control and other functions at the same time by completing the adsorption positioning of the chip and the substrate, and the precise alignment between the chopper and the substrate pad, so as to realize the bonding between the chips. lead interconnects. In order to ensure the quality of gold wire bonding, it is necessary to ensure that the gold wire has a certain tension. At present, most of the hanging type is used to ensure the tension of the gold wire. This structure needs to be replaced and adjusted according to the size of the hanging weight for different gold wires, which is very inconvenient to use. And it is easy ...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a micro-tension mechanism for wedge welding gold wire airflow control, which solves the technical problems that the gold wire tension is difficult to control and easy to break in the existing automatic wire bonding machine

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