JPS60120809U

JPS60120809U - Filling pressure control device during oxide magnet manufacturing

Info

Publication number: JPS60120809U
Application number: JP1984180141U
Authority: JP
Inventors: ルツツ・ベイヤー; ペーター・クルーゲ
Original assignee: ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング
Priority date: 1983-12-24
Filing date: 1984-11-29
Publication date: 1985-08-15
Also published as: FR2557093A3; AT385138B; ATA406484A; FR2557093B3; DE3347035A1; IT8424213A0; IT1181936B

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 drawings]

第１図は本考案に成る装置の概略構成を示した構成図、
第２図は母型内の圧力特性を示した線図である。１・・・供給ポンプ、２・・・供給管、３・・・遮断弁
、５・・・供給路、６・・・下方ピストン、７・・・上
方ピストン、８・・・圧カセンサ、９・・・制御回路、
１１・・・目標値発生器、１２・・・時間信号発生器。FIG. 1 is a block diagram showing the schematic structure of the device according to the present invention;
FIG. 2 is a diagram showing pressure characteristics within the matrix. DESCRIPTION OF SYMBOLS 1... Supply pump, 2... Supply pipe, 3... Shutoff valve, 5... Supply path, 6... Lower piston, 7... Upper piston, 8... Pressure sensor, 9 ...control circuit,
11...Target value generator, 12...Time signal generator.

Claims

[Scope of utility model registration request]

(1) In a filling pressure control device for manufacturing an oxide magnet, in which material is supplied from a material supply pump to a press mother die via a supply pipe, and the pump piston is held in a downward position for a predetermined period of time, the supply pipe 2 and the mother die are A hydraulically controlled shutoff valve 3 is provided between the molds 4, and a pressure sensor 8 for detecting the filling pressure in the mother mold is provided between the shutoff valve and the mother mold 4, so that the filling pressure in the mother mold is at the maximum corresponding to the target value 11. When the filling pressure is reached, the maximum filling pressure is held constant by the holding time given by the time signal generator 12 by the electro-hydraulic control circuit 9, and after the holding time has elapsed, the lower piston 6 of the press is moved upward to release the material. A filling pressure control device for manufacturing an oxide magnet, characterized in that after a predetermined pressing pressure is reached by pressing, a shutoff valve 3 is closed and a piston of a supply pump 1 is returned to its original position.

(2) A filling pressure control device for manufacturing an oxide magnet according to claim 1, wherein the supply pipe 2 is provided with a filter 13.

(3) The filling pressure control device for manufacturing an oxide magnet according to claim 1 or 2, wherein a piezo sensor or a strain gauge is used as the pressure sensor 8.