JPS59167674U

JPS59167674U - hydraulic compression tools

Info

Publication number: JPS59167674U
Application number: JP6197983U
Authority: JP
Inventors: 金丸　康孝
Original assignee: 三和テッキ株式会社
Priority date: 1983-04-25
Filing date: 1983-04-25
Publication date: 1984-11-09
Also published as: JPS6310930Y2

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図は動作前の状態の正面歯、第２図はラム早送り状
態の正面図、第３図はラム高圧送り状態の正面図、第４
図はラム復帰状態の正面図である。　　−１・・・本体
、２・・・油圧シリンダ、３．　４．　５・・・送油管
、８・・・移動ダイス、９・・・ラム、９ａ・・・小径
シリンダ、１０・・・ピストン、１０ａ・・・油通路、
１１゜１２・・・分岐路、１３・・・チェック弁、１４
・・・リリーフ弁、１５・・・油通路、１６・・・吸入
チェック弁、１７・・・切換弁、１８．１９・・・送油
管、Ｐ・・・油圧ポンプ、Ｔ・・・タンク。Figure 1 is a front view of the front tooth before operation, Figure 2 is a front view of the ram in a rapid feed state, Figure 3 is a front view of the ram in a high pressure feed state, and Figure 4 is a front view of the ram in a high pressure feed state.
The figure is a front view of the ram in its return state. -1...Main body, 2...Hydraulic cylinder, 3. 4. 5... Oil feed pipe, 8... Moving die, 9... Ram, 9a... Small diameter cylinder, 10... Piston, 10a... Oil passage,
11゜12... Branch road, 13... Check valve, 14
... Relief valve, 15... Oil passage, 16... Suction check valve, 17... Switching valve, 18.19... Oil feed pipe, P... Hydraulic pump, T... Tank.

Claims

[Scope of Claim for Utility Model Registration] A main body having a hydraulic cylinder; a ram for driving a moving die inserted into the hydraulic cylinder of the main body and having a small diameter cylinder in the center; The small diameter cylinder of the ram is equipped with a piston inserted into a small diameter cylinder of the ram and a hydraulic pump that generates driving hydraulic pressure, and the small diameter cylinder of the ram is connected to an oil tank through an oil passage passing through the piston and via a switching valve. The hydraulic cylinder of the main body communicates with the oil tank via the suction check valve, and is branched into two, each with a relief valve and a relief valve.
It communicates with the oil passage through a branch passage provided with a check valve, and the suction check valve is set to open due to the negative pressure in the hydraulic cylinder caused by the ram being pushed out, and the IJ IJ-f valve of the branch passage is set to open when the inside of the small diameter cylinder reaches a certain pressure after the completion of rapid feed of the ram, and the check valve of the other branch passage is set to open by the hydraulic pressure of the ram returning inside the hydraulic cylinder of the main body. A hydraulic compression tool characterized by: