Welding wire machine and anti-oxidation structure thereof

Abstract

The invention discloses a welding wire machine and an anti-oxidation structure thereof, the anti-oxidation structure comprises a gas flow pipeline, a fire rod independently situated at the outside of the gas flow pipeline, and a fire rod fixing seat used for fixing the fire rod; the gas flow pipeline is provided with a gas inlet and a gas outlet, a ball burning area is arranged at a position close to the gas outlet in the gas flow pipeline, a first through hole for enabling the welding wire of a ball to be burnt to enter the ball burning area and a second through hole for stretching the end part of the fire rod into the ball burning area are respectively arranged on the pipe wall of the gas flow pipeline corresponding to the ball burning area. When in use, a shielding gas flows toward the ball burning area from the gas inlet to protect the ball burning environment, and the shielding gas can flow toward the welding wire position via the gas outlet to simultaneously protect the welding wire environment. According to the invention, one gas pipeline can be used for protecting the ball burning and the welding wire environment to reduce the dosage of the shielding gas; furthermore, the fire rod is separate from the pipeline, so that the fire rod is more convenient for change and maintenance.

Description

Technical field [0001] The invention relates to wire bonding equipment, in particular to a wire bonding machine and its anti-oxidation structure. Background technique [0002] Ultrasonic wire bonding machine is a kind of semiconductor device inner lead welding equipment. The metal wire will be burned first, and then the metal wire will be welded to the lead frame by ultrasonic and heat. Wire bonding machines on the market generally use gold wires to bond wires. In order to reduce costs, gold wires began to be replaced by copper wires. Since the copper wire will be oxidized when the balls are burnt and wire bonding, the wire cannot be soldered. Therefore, it is necessary to use inert gas such as nitrogen to protect the environment of the balls and wire bonding. [0003] In order to effectively protect the environment of burning balls and wire bonding, it is very important to blow the nitrogen gas structure of the copper wire. The nitrogen blowing structure of copper wire on the ...

AI Technical Summary

Problems solved by technology

[0006] The present invention mainly provides a wire bonding machine and its anti-oxidation structure, which solves the current problem of using two separate pipes to protect the burning ball and the large amount of nitrogen used in the wire bonding environment, and solves the problem that the current lighter is not easy to replace and maintain

Images