Air cylinder

Abstract

An air cylinder having a simple and effective configuration to reduce the axial length and provide ease of processing. A sliding bearing that guides a piston rod is disposed at a position adjacent to a groove in which a rod packing is fitted. One end of the sliding bearing serves as the side wall of the groove and prevents displacement of the rod packing. The other end of the sliding bearing extends so as to cover part of a yenta of a first port. An orifice having a sectional area smaller than that of the yenta is formed at the position of the yenta by the sliding bearing.

Description

technical field [0001] The invention relates to an air cylinder which converts the energy of compressed air into linear motion for various operations. Background technique [0002] Cylinders operated by compressed air are extremely common, such as Figure 8 As schematically shown in , this cylinder includes: a piston 42 that slides in a cylinder bore 41 inside a cylinder body 40; a piston rod 43 that is connected to the piston 42; pressure chambers 44a, 44b that are formed in Both sides of the above-mentioned piston 42; two ports 45a, 45b, which supply compressed air into these pressure chambers or discharge compressed air from the above-mentioned pressure chambers, and alternately pass through these ports 45a, 45b to the above-mentioned pressure chambers 44a, 44b Compressed air is supplied and discharged, and various operations are performed by reciprocating the piston rod 43 by the piston 42 . [0003] This cylinder can easily obtain linear motion, so it is often used in ...

AI Technical Summary

Problems solved by technology

However, the place where the cylinder is usually installed is often a very narrow place or a space restricted by other adjacent equipment. Therefore, the cylinder used in such a place is required to be shortened even a little in the axial direction without shortening the operating stroke.

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