Spray gun for online extrusion spraying of sealing piece

Abstract

The invention belongs to the technical field of automobile sealing pieces, and particularly relates to a spray gun for online extrusion spraying of a sealing piece. The spray gun comprises a spray gunbody, wherein the spray gun body is mainly composed of a spray gun casing, a conveying sleeve, a feeding pipe, a gas delivery pipe and a nozzle, the gas delivery pipe is located in the middle of thetop end of the spray gun casing and is in threaded connection with the spray gun casing through a connecting pipe 62, and the conveying sleeve is located in the left side of the spray gun casing. Thespraying angle of a gun head is set to be 90 degrees, so that the 360-degree conical surface spraying of the nozzle is realized, and the wide width of the spraying range meets 20 mm-50 mm of the surface of a product; the spray gun is small and exquisite and capable of getting close to the product, so that the phenomenon that lots of paints float in the air in the spraying process, the paints are fully utilized, and the environmental pollution degree is reduced; and by adopting the design without ejector pin, the problems that manual adjustment of too large or too small spraying amount and a material pipe is blocked are solved, the paint is saved by more than 40% under the same technological quality, and the problems that the paints are wasted and stability is poor are effectively solved.

Description

Technical field [0001] The invention belongs to the technical field of automobile seals, and particularly relates to a spray gun for on-line extrusion spraying of seals. Background technique [0002] Although rubber and plastic seals are small, their role makes them the basic components and accessories in the main industries of the national economy such as national defense, chemical industry, petroleum, coal, transportation and machinery manufacturing, and it occupies a very important position in the development of the national economy. In recent years, with the rapid economic growth, the rubber and plastic seals manufacturing industry has maintained a double-digit growth. Classified by function, it is divided into shaft seals, hole seals, dust seals, guide rings, fixed seals, and rotary seals. According to the material classification, it is divided into cyanide butadiene rubber, EPDM rubber, fluorine rubber, silica gel, fluorine silicon rubber, nylon, polyurethane, engineering p...

AI Technical Summary

Problems solved by technology

[0004] 1. At present, sealing strip manufacturers in the industry widely use a spray gun manufactured by Iwata in Japan. This spray gun is a needle spray gun. The amount of spraying materials can be controlled by adjusting the gun needle. The air channel realizes the mixing of air pressure and paint, and becomes a mixed paint, which is sprayed onto the product surface in a fan shape. Generally, the coating surface of an automobile sealing strip needs to be sprayed with a width of about 20mm-50mm, and the fan-shaped spraying structure cannot meet the spraying requirements of the product surface;

[0005] 2. Needle spray gun controls the dosage by adjusting the position gap of the gun needle. During the production process, the workers rely on experience. At the same time, when the gun needle gap is too small, it is easy to cause material blockage, which leads to poor spraying stability in the industry when producing seals. question;

[0006] 3. The phenomenon of a large amount of paint floating in the air during the spraying process, the waste of paint is high, and it causes environmental pollution

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