Glue injection method of valve covers

Abstract

The invention relates to a glue injection method of valve covers, which comprises the steps as follows: each upward valve cover arranged on a groove is placed on a disc face with a diameter of 32mm to 33mm, and the disc face with strong magnetism can automatically adsorb the valve covers. A glue spraying device with a downward opening is arranged at the position 3mm to 5mm above a groove of the valve covers, a disc drives the valve covers to rotate one circle, and the glue spraying device sprays out thick glue with the total amount of about 0.5ml. The valve covers with the glue injected are conveyed and placed in a drying machine to be dried at a temperature of 200 DEG C to 230DEG C, and after 2 minutes to 3 minutes, the whole glue injection process is finished. The glue injection method of valve covers has the advantages of adopting a high-temperature forming technology to enable an iron sealing cup to be adhered tightly with a sealing rubber cushion; being capable of achieving full-automatic glue injection and monitoring control and increasing output while ensuring product quality; and being safe and reliable in sealing effect.

Description

technical field [0001] The invention relates to a glue injection method for a valve cover. Background technique [0002] At present, the air-conditioning refrigerant valve cover is composed of two parts: an iron sealing cup and a sealing rubber pad, which have the following disadvantages: 1. The two parts are provided by two different manufacturers and assembled together manually. Since the rubber pad is semi-circular, It is very difficult to assemble the machine, so it has been assembled by hand, so that the quality cannot be guaranteed; 2. The production cost increases, and the sealing will not be in place when filling and sealing in the future. Filling producer; 3. Since it is assembled from two parts, there must be a certain gap. Therefore, when the machine is filled with high pressure, the rubber pad is often blown and the seal leaks. It is found that it is difficult to recover the refrigerant after the leak. The loss is ten to tens of yuan, and it also causes air poll...

AI Technical Summary

Problems solved by technology

[0002] At present, the air-conditioning refrigerant valve cover is composed of two parts: an iron sealing cup and a sealing rubber pad, which have the following disadvantages: 1. The two parts are provided by two different manufacturers and assembled together manually. Since the rubber pad is semi-circular, It is very difficult to assemble the machine, so it has been assembled by hand, so that the quality cannot be guaranteed; 2. The production cost increases, and the sealing will not be in place when filling and sealing in the future. Filling producer; 3. Since it is assembled from two parts, there must be a certain gap. Therefore, when the machine is filled with high pressure, the rubber pad is often blown and the seal leaks. It is found that it is difficult to recover the refrigerant after the leak. Loss of ten to dozens of yuan, also caused air pollution