Dual Valve Needle Oval Piston Assembly

Abstract

The invention discloses a double valve needle oval piston assembly, which includes a cylinder head, a cylinder, a piston bottom cover, an oval piston, an air intake pipe, an exhaust pipe and two valve needles; an oval groove is provided inside the cylinder, and the cylinder head The piston bottom cover and the piston bottom cover are fixed on the cylinder, and the oval piston is set in the oval groove; the intake pipe leads to the cylinder head through the side wall of the cylinder, and the cylinder head is provided with an air inlet hole connecting the intake pipe and the oval groove; exhaust The pipe is set on the cylinder close to the piston bottom cover, and the exhaust pipe is connected with the oval groove; the oval piston is provided with a piston handle with an oval cross-section, and the piston bottom cover is provided with a piston handle through hole, and the piston handle can slide is located in the through hole of the piston handle; there is a valve needle groove on the end face of the piston handle, the valve needle groove is set along the long axis direction of the end face of the piston handle, and the two valve needles are set in the valve needle groove. Through the above method, the valve needle of the present invention can move within an elliptical range, and the valve needle will not rotate during the movement.

Description

technical field [0001] The invention relates to the field of piston assemblies, in particular to an elliptical piston assembly with double valve needles. Background technique [0002] In the prior art, the distance between the two entry points must be greater than the installation diameter of the cylinder before the valve needle structure system can be used. At the same time, it cannot be used on products with curved surface glue, because the valve needle will rotate during the movement and cannot be used. Position accurately. For small products, the valve needle structure cannot be used for entry-intensive products. Contents of the invention [0003] The technical problem mainly solved by the present invention is to provide an elliptical piston assembly with double valve needles. The valve needles can move within the elliptical range, the entry gap can be adjusted within the elliptical range, and the valve needles will not rotate during the movement. [0004] In order t...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the distance between the two entry points must be greater than the installation diameter of the cylinder before the system with the valve needle structure can be used. At the same time, it cannot be used on products with curved surface glue, because the valve needle will rotate during the movement and cannot be used. accurately locate

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