JPS60184618U

JPS60184618U - Mold clamping device for injection molding machine

Info

Publication number: JPS60184618U
Application number: JP6826584U
Authority: JP
Inventors: 三郎藤田; 源浜田; 桑原　辰雄
Original assignee: 三菱重工業株式会社; 中菱エンジニアリング株式会社
Priority date: 1984-05-10
Filing date: 1984-05-10
Publication date: 1985-12-07
Also published as: JPH0356350Y2

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図は本考案の実施例を示す射出成形機における型締
装置の断面図及び回路図、第２図は従来　　　　。の痢出成形機における型締装置の断面図及び回路図、第
３図は第２図と作動状態を異にする第２図における要部
の断面図、第４図は第２図の装置の操作説明図である。図の主要部分の説明、１・・・型締シリンダ、２・・・
主ラム、４・・・受圧室、１２・・・プレフィル開用油
穴、１３・・・型開用油穴、１４・・・油通路、３１・
・・ブースクラム、３２・・・ブースト用油通路（中空
穴）、３３・・・プレフィルピストン、３５・・・後部
のピストン部、３６・・・昇圧用油通路、３７・・・昇
圧用　　・油室（第１油穴）、３８・・・プレフィルピ
ストン前進用穴（第２油穴）、３９・・・絞り穴（絞り
部）、４０・・・プレフィルピストン前進用第２圧力室
、４１・・・プレスフィルピストン前進用第１圧力室、
４２・・・蓄圧器、４３・・・プレフィルピストン後退
用圧力室。 ■ 第４図Fig. 1 is a sectional view and circuit diagram of a mold clamping device in an injection molding machine showing an embodiment of the present invention, and Fig. 2 is a conventional one. Figure 3 is a cross-sectional view of the main parts in Figure 2 whose operating state is different from Figure 2, and Figure 4 is a diagram of the mold clamping device in the molding machine of Figure 2. It is an operation explanatory diagram. Explanation of the main parts of the figure, 1... mold clamping cylinder, 2...
Main ram, 4... Pressure receiving chamber, 12... Oil hole for prefill opening, 13... Oil hole for mold opening, 14... Oil passage, 31...
・Booth crumb, 32... Oil passage for boost (hollow hole), 33... Prefill piston, 35... Rear piston part, 36... Oil passage for boosting pressure, 37... For boosting pressure・Oil chamber (first oil hole), 38... Hole for prefill piston advancement (second oil hole), 39... Restriction hole (restriction part), 40... Second pressure for prefill piston advancement Chamber, 41...first pressure chamber for press fill piston advancement;
42...Pressure accumulator, 43...Prefill piston retreat pressure chamber. ■ Figure 4

Claims

[Scope of utility model registration request]

A mold clamping cylinder is pressure-tightly inserted into the main ram, and the rear end of the booth ram with a hollow hole in the center is fixed to the mold clamping cylinder with two stages of outer diameter, large diameter and small diameter, and the front end is fixed to the mold clamping cylinder. A prefill piston that is inserted into a pressure receiving chamber provided in the main ram and has a through hole in the axial direction is inserted into the rear cylinder of the mold clamping cylinder, and the booth ram is passed through the center of the prefill piston; A pressure chamber for prefill retraction made up of the outer diameter of the prefill piston and the inner diameter of the mold clamping cylinder, and a first pressure chamber for advancing the prefill piston made up of the inner diameter of the piston and the outer diameter of the booster ram, A first oil hole communicating with the hollow hole and a second pressure chamber for advancing the prefill piston is provided in a large diameter portion of the booth crumb, and a first oil hole communicating with the hollow hole and a second pressure chamber for advancing the prefill piston is provided in a small diameter portion of the booth crumb. A mold clamping device for an injection molding machine, characterized in that a second oil hole communicating with a pressure chamber is provided, and a throttle portion is provided in the first oil hole.