An assembly device for the spool gray ring of the air control valve

Abstract

The invention relates to an assembly device for a valve core gray ring of an air control valve, comprising a guide sleeve and a push sleeve; the guide sleeve includes an outer wall and an inner wall, the lower part of the outer wall of the guide sleeve is a cylindrical surface, and the upper part of the outer wall of the guide sleeve is Conical surface, and a smooth transition between the cylindrical surface and the conical surface, the inner wall of the guide sleeve is provided with a shoulder, the diameter of the inner wall below the shoulder is not less than the maximum outer diameter of the valve core, and the diameter of the inner wall above the shoulder is smaller than the maximum outer diameter of the valve core; The tetrafluoroethylene ring is set on the upper end of the outer wall of the guide sleeve; the inner diameter of the lower part of the push sleeve is not smaller than the inner diameter of the polytetrafluoroethylene ring, and the lower part of the push sleeve divides the push sleeve into multiple parts in the circumferential direction by setting multiple gaps along the circumference. For the petal body, the inner wall of the lower edge of the plurality of petal bodies is provided with recesses along the circumference, and the upper and lower ends and top corners of the recesses are rounded at three places in total. The invention completes the installation of the polytetrafluoroethylene ring through the cooperation of the guide sleeve and the push sleeve, which reduces the workload of the assembly personnel and avoids the damage to the hands compared with the pure manual assembly method.

Description

technical field [0001] The invention relates to the technical field of assembling a sealing ring of a pneumatic impact cylinder, in particular to an assembling device for a gray ring of a valve core of an air control valve. Background technique [0002] With the continuous development of sealing technology and the increase of the working pressure of the impact cylinder, the types and performance of seals are more diversified, which also brings difficulties in the assembly process of seals. The gray ring is composed of a rubber O-ring and a PTFE ring. At present, the installation method usually used in the actual assembly process is purely manual: first put the rubber O-ring in the groove of the valve core, Then push the PTFE ring, which acts as a double seal, onto the surface of the rubber O-ring to complete the installation. The whole is installed sequentially from the middle of the spool to both ends. This method has the following problems: 1) the actual installation is ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to solve the disadvantages of the above-mentioned prior art that the operation is difficult and time-consuming during the actual assembly process of the gray ring, the deformation of the polytetrafluoroethylene ring is large and easily damaged, and the sealing performance may be poor or even invalid. An assembly device for the gray ring of the valve core of the air control valve, which can greatly reduce the workload of the assembly personnel in the application, and has the advantages of simple manufacture and easy operation

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