JPS59180900U

JPS59180900U - Cylinder stroke regulating device in hydraulic press

Info

Publication number: JPS59180900U
Application number: JP7462383U
Authority: JP
Inventors: 重雄古山
Original assignee: 株式会社　アマダ
Priority date: 1983-05-20
Filing date: 1983-05-20
Publication date: 1984-12-03
Also published as: JPH03320Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の実施背景を説明する油圧プレスの正面
図、第２図は上下の型を駆動する流体圧シリンダの断面
図、第３図は第２図の■−■断面矢視図、第４図は油圧
配管図、第５図は第３図のＶ−Ｖ断面矢視図、第６図は
第３図のＶＩ−ＶＩ断面矢視図、第７図は本考案の第１
実施例の第２図に相当する第２実施例図である。（図面の主要部を表わす符号の説明）、１・・・プレス
ブレーキ、１３・・・右流体圧シリンダ、３３・・・ピ
ストン、３９・・・小径油圧室、４１・・・大径油圧室
、５１・・・カウンタバランスバルブ、５７・・・移動
部材、６１・・・ｆａ弁、９５・・・スプール。Fig. 1 is a front view of a hydraulic press to explain the implementation background of the present invention, Fig. 2 is a cross-sectional view of the hydraulic cylinder that drives the upper and lower molds, and Fig. 3 is a cross-sectional view taken along the line ■-■ in Fig. 2. , Fig. 4 is a hydraulic piping diagram, Fig. 5 is a cross-sectional view along V-V in Fig. 3, Fig. 6 is a cross-sectional view along VI-VI in Fig. 3, and Fig. 7 is a diagram of the
FIG. 2 is a diagram of a second embodiment corresponding to FIG. 2 of the embodiment. (Explanation of symbols representing main parts of the drawings), 1...Press brake, 13...Right fluid pressure cylinder, 33...Piston, 39...Small diameter hydraulic chamber, 41...Large diameter hydraulic chamber , 51... Counter balance valve, 57... Moving member, 61... FA valve, 95... Spool.

Claims

[Scope of utility model registration request]

(1) A hydraulic press that processes materials by approaching and separating an upper die and a lower die, is provided with a cylinder device that drives at least one of the upper die and the lower die, and is integrated with the piston in a part of the piston of the cylinder device. A moving member is provided which moves in a specific direction, and an oil path for branching and returning the pressure oil to the oil tank is provided in the oil path for the pressure oil that drives the cylinder device, and the above-mentioned reflux is controlled depending on the movement position of the moving member. A cylinder stroke regulating device for a hydraulic press, characterized by being provided with an on-off valve that opens an oil passage.

(2) A cylinder stroke in a hydraulic press according to claim 1 of the utility model registration claim, characterized in that a check valve with a tappet is provided as an on-off valve that opens the return oil path by lowering the moving member. regulatory device.

(3) A hydraulic press according to claim 1 of the utility model registration claim, characterized in that a spool valve in which a spool is connected to the moving member is provided as an on-off valve that opens the return oil path by moving the moving member. cylinder stroke regulating device.