Zinc oxide resistor aluminium spraying device and aluminium spray process thereof

Abstract

The invention discloses a zinc oxide resistor aluminium spraying device, and the aluminium spray process thereof. An aluminium electrode spraying device includes a spray gun, a conveyor belt, a blowing table and an exhaust gas collection pipe; the conveyor belt is used for conveying a zinc oxide resistor to the blowing table under the spray gun, and after a sensor in the blowing tables senses the resistor, a spray switch of the spray gun and a gas valve of the blowing table under the spray gun are opened at the same time, and aluminium electrode spraying is started; the spray gun and the blowing table are closed at the same time after the blowing and spraying time is reached; and then the conveyer belt is used for conveying the next resistor to the blowing table under the spray gun for next resistor spraying. Through adopting the aluminium electrode spraying process for the resistors, the spraying work efficiency is high, only 2 workers are required for operation, and the operation is simple. The zinc oxide resistors are not needed to be sleeved with rubber rings, the labor force is reduced, and the cost for purchasing the rubber rings is eliminated, so that the cost is lowered. At the same time, the aluminium electrode covering range on an end surface of each resistor is enlarged to improve the product through-current capability.

Description

technical field [0001] The invention belongs to the technical field of piezoresistor production, and in particular relates to an aluminum spraying device for a zinc oxide resistance film and an aluminum spraying process thereof. Background technique [0002] The core component of the ZnO surge arrester --- the core of the varistor chip forms a conductive path by connecting the plane electrodes at both ends. Since the core will bear a large electrical load during the operation of the arrester, all measures are taken to ensure its electrical passage. The electrodes not only have good electrical conductivity and arc resistance, but also have good adhesion to the surface of the ceramic body. Whether the combination degree of the electrode and the ceramic body is sufficient or not will directly affect the flow capacity of the resistor sheet. At present, the industry in our country puts rubber rings on both ends of the piezoresistor before spraying. When the rubber ring is u...

AI Technical Summary

Problems solved by technology

At present, the industry in our country puts rubber rings on both ends of the piezoresistor before spraying. When the rubber ring is used to a certain extent, the rubber ring is worn and easy to loosen. When spraying aluminum electrodes, the rubber ring is easy to blow off and cause zinc oxide resistance. The end face of the chip is completely exposed under the spray gun, causing the aluminum on the side of the resistor chip to be scrapped

Before spraying the aluminum electrode, the zinc oxide resistor needs multiple people to put on the rubber ring one by one. After spraying, it needs multiple people to remove the rubber ring one by one, which requires a lot of labor.

Moreover, the rubber ring needs to be replaced regularly due to wear and tear after being used for a period of time, which also consumes a lot of funds every year.

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