JPS61175605U

JPS61175605U -

Info

Publication number: JPS61175605U
Application number: JP5994085U
Authority: JP
Priority date: 1985-04-22
Filing date: 1985-04-22
Publication date: 1986-11-01

Description

[Brief explanation of the drawing]

第１図は全体の概略図、第２，３図はクツシヨ
ンユニツトの断面図、第４図はピストンがそのス
トローク終端近くに到達した状態を示す概略図、
第５図はクツシヨンユニツトの他の実施例を示す
断面図、第６図は第５図の―線に沿つてみた
図、第７図は第５図の―線に沿つてみた図、
第８図および第９図は従来のものを示す図である
。１，４５……ピストン、２，４７……クツシヨ
ンカラー、３，４１……ロツド、４，４３……シ
リンダチユーブ、５，４４……エンドカバー、６
，７，４６……ガイド孔、８，５２……配管ポー
ト、９……第１通路、１０……第２通路、１１…
…クツシヨンユニツト、１５，２０……弁体、１
６……ばね押さえ、１７……リリーフスプリング
、１８……急速排気弁座、１９，２１……調整ね
じ、２２……絞り弁座、２３……弁室、２４……
急速排気孔、２５，２８，３０……通路、２６，
２９……開口通路、２７……弁室、３２，４８…
…クツシヨン室。 Fig. 1 is an overall schematic diagram, Figs. 2 and 3 are cross-sectional views of the cushion unit, and Fig. 4 is a schematic diagram showing the state in which the piston has reached near the end of its stroke.
FIG. 5 is a sectional view showing another embodiment of the cushion unit, FIG. 6 is a view taken along the line - in FIG. 5, FIG. 7 is a view taken along the line - in FIG. 5,
FIG. 8 and FIG. 9 are diagrams showing conventional devices. 1,45...Piston, 2,47...Cushion collar, 3,41...Rod, 4,43...Cylinder tube, 5,44...End cover, 6
, 7, 46... Guide hole, 8, 52... Piping port, 9... First passage, 10... Second passage, 11...
...Cushion unit, 15, 20... Valve body, 1
6... Spring holder, 17... Relief spring, 18... Rapid exhaust valve seat, 19, 21... Adjustment screw, 22... Throttle valve seat, 23... Valve chamber, 24...
Rapid exhaust hole, 25, 28, 30... passage, 26,
29... Open passageway, 27... Valve chamber, 32, 48...
...Cushion room.

Claims

[Claims for Utility Model Registration] (1) A guide hole in which a cushion collar provided on at least one side of the piston communicates with a piping port, which is bored in the end cover of the cylinder near the end of the stroke of the piston; In a pneumatic cylinder, air on the exhaust side is trapped in a cushion chamber formed between a piston and an end cover, and the piston is decelerated. A variable throttle valve is provided to guide the piston, and a quick relief valve is provided which operates when the pressure inside the cushion chamber exceeds a predetermined value only at the end of the stroke of the piston to communicate with the outside of the cylinder. pneumatic cylinder. (2) The pneumatic cylinder according to claim 1, wherein the variable throttle valve and the quick relief valve are integrated into a unit and are detachable from the end cover.