JPS5823263U

JPS5823263U - casting equipment

Info

Publication number: JPS5823263U
Application number: JP11678581U
Authority: JP
Inventors: 野沢　勝利
Original assignee: 株式会社日立製作所; 日立機械エンジニアリング株式会社
Priority date: 1981-08-07
Filing date: 1981-08-07
Publication date: 1983-02-14

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図は従来装置の射出時間〜射出圧力曲線図、第２図
は本考案装置を使用した場合の射出時間〜射出圧力曲線
図、第３図は本考案の鋳造装置の実施例の射出シリンダ
ーの概略断面及び油圧系統説明図、第４図は本考案の鋳
造装置の他の実施例の射出シリンダーの概略断面及び油
圧系統説明図である。１・・・・・・高圧射出用シリンダー、２・・曲射量プ
ランジャー、３・・・・・・高速射出用シリンダー、４
・・・・・・可変容量形ポンプ、５・・・・・・ＩＪ　
ＩＪ−フ弁、６・・・・・・高速射出用切換弁、７・・
・・・・オイルタンク、８・・・・・・チェック弁、９
・・・・・・位置検出器、１０・・・・・・高圧射出用
切換弁、１１・・・・・・アキュムレータ、１２・・・
・・・減圧弁、１３・・・・・・流量調整弁、１４・・
・・・・チェック弁、１５・・・・・・す′リーフ弁、
１６・・・・・・チェック弁、１７・・・・・・油圧源
、１８・・・・・・切換弁、１９・・・・・・チェック
弁、２０・・・・・・圧力開閉器、２１・・・・・・油
圧源、２２・・・・・・減圧弁、２３・・・・・・流量
調整弁、２４・・・・・・油圧源、２５・・・・・・９
］ｔＡ弁、２６・・・・・・パイロットチェック弁。Ｈ舷猷寸膚逮峠 −−註１特茅２目１１−１１ ”し、１不一−− 一＠；１埒川第　４　　凪第　３　凹１８／に／７Figure 1 is an injection time-injection pressure curve diagram of a conventional device, Figure 2 is an injection time-injection pressure curve diagram using the device of the present invention, and Figure 3 is an injection cylinder of an embodiment of the casting device of the present invention. FIG. 4 is a schematic cross-sectional view of an injection cylinder and an explanatory view of a hydraulic system of another embodiment of the casting apparatus of the present invention. 1... Cylinder for high pressure injection, 2... Curved injection amount plunger, 3... Cylinder for high speed injection, 4
・・・・・・Variable displacement pump, 5・・・・・・IJ
IJ-fu valve, 6... High-speed injection switching valve, 7...
...Oil tank, 8...Check valve, 9
...Position detector, 10...High pressure injection switching valve, 11...Accumulator, 12...
...Pressure reducing valve, 13...Flow rate adjustment valve, 14...
...Check valve, 15...S'leaf valve,
16...Check valve, 17...Hydraulic pressure source, 18...Switching valve, 19...Check valve, 20...Pressure switch , 21...Hydraulic pressure source, 22...Pressure reducing valve, 23...Flow rate adjustment valve, 24...Hydraulic pressure source, 25...9
]tA valve, 26...Pilot check valve. H Gunboku Sunhada Toge--Note 1 Tokuko 2 eyes 11-11 "shi, 1 Fuji-- 1@; 1 Nikawa No. 4 Nagi No. 3 Concave 18/N/7

Claims

[Scope of utility model registration request]

After feeding molten metal into the mold cavity with an injection plunger,
In high-pressure solidification casting equipment that applies high pressure to molten metal and solidifies it under pressure, a high-speed injection circuit is created using a combination of a high-speed injection cylinder built into an injection plunger and a high-pressure injection cylinder. By operation,
The molten metal is fed into the mold cavity at high speed, and before the high-speed injection is completed, a separately provided high-pressure injection circuit is activated, and pressurized oil is supplied to the high-speed injection circuit and the high-speed injection circuit at the same time. 1. A casting device characterized by being equipped with a pressure oil operation circuit that can raise the pressure applied to the machine up to a high injection pressure without time delay and adjust the pressure rise speed.