A spray gun device

Abstract

The invention provides a spray gun device and belongs to the technical field of spray guns. The spray gun device solves the problems that sand holes are formed in a gun body of a traditional spray gun easily and the phenomenon of air leakage is prone to occurrence under the conditions that the traditional spray gun is manufactured and is in friction with compressed air. According to the technical scheme, the spray gun device comprises a gun body made of an aluminum alloy material and a material tank connected with the gun body. A gun head of the gun body is provided with a nozzle and an air flow cap, wherein the nozzle and the air flow cap are coaxially arranged. An amplitude adjusting air flow channel is formed in the air flow cap, a pressure channel communicated with the amplitude adjusting air flow channel is formed in the gun body, the gun head is provided with an air guiding ring coaxial with the nozzle, a guiding hole is formed in the air guiding ring, and the two ends of the guiding hole are respectively communicated with the amplitude adjusting air flow channel and the pressure channel. According to the spray gun device, loss of compressed air is prevented, so that the volume of the compressed air is reserved, the function that the compressed air is enough for amplitude adjustment when spraying is conducted by a spray gun is guaranteed, the spraying effect of the spraying gun is enhanced, the quality and the percentage of pass of spraying are improved, influence on the gun body by the compressed air is small, and the service life of the gun body is prolonged.

Description

technical field [0001] The invention belongs to the technical field of spray guns, and relates to a spray gun device. Background technique [0002] Spray gun is a relatively common spraying tool in daily life. It has a wide range of applications. Using a spray gun as a tool for spraying paint or coatings is convenient and labor-saving. There are many types of spray guns on the market. According to the feeding method, it can be roughly It is divided into three types: siphon type, gravity type and pressure type, among which the siphon type air spray gun is the most common and widely used. [0003] No matter what kind of spray gun, the principle is that the lower end of the spray gun has a material tank, the compressed air flows through the nozzle of the spray gun at high speed, and a partial vacuum is generated around, the paint in the material tank is sucked into the nozzle and atomized into paint mist and sprayed on the surface of the object evenly. The effect of spraying, ...

AI Technical Summary

Problems solved by technology

[0004] The gun body of this spray gun is generally made of aluminum alloy material, which has low density, light weight, high strength and strong plasticity. Therefore, there is a problem with this spray gun. Due to the characteristics of the aluminum alloy itself and the production process, The gun body is prone to air bubbles or directly form sand holes during the production process. These bubbles will gradually form sand holes under the high-speed impact of compressed air in the gun body. During the use of the spray gun, the pressurized air enters through the compressed air channel. In the process phase of the air cap, due to the existence of sand holes, compressed air will enter these sand holes, resulting in air leakage, so the volume of compressed air entering the air cap is greatly reduced, and the airflow ejected from the amplitude modulation hole It is not enough to adjust the amplitude of the paint sprayed by the nozzle or can not achieve a good amplitude modulation effect, but the amplitude modulation effect is the most important and has the greatest impact on the overall spraying effect of the spray gun, but due to air leakage, the overall spraying effect of the spray gun is greatly reduced in the end. The thickness and color of the paint on the surface of the object are all unqualified, and the spraying quality is not up to the standard, which also makes the service life of the spray gun shorter, the replacement frequency is faster, and the cost of use is relatively increased.

Images