Title:
LOCALIZED PRESSURIZING TYPE INJECTION MOLDING MACHINE
Document Type and Number:
WIPO Patent Application WO/1993/024298
Kind Code:
A1
Abstract:
A localized pressurizing type injection molding machine for applying various processings to moldings during the injection molding cycle, and the injection molding machine can apply various processings to the moldings after the injection molding process. The injection molding machine comprises a stationary platen (12) and a movable platen (14). A pressurizing pin (24) extends through at least a portion of either one of the two platens and the forward end thereof is linearly movably disposed inside a cavity. A pressurizing cylinder (32) is provided in the rear of the above-mentioned pressurizing pin (24), whereby a hydraulic pressure supplying means supplies pulse-form hydraulic pressure to the above-mentioned pressurizing cylinder (32), so that the pressurizing pin (24) can be oscillated. The pulse-from pressurizing force is applied to the resin after the fill-up, so that a predetermined processing is applied to the molding. Accordingly, a highly accurate processed surface can be obtained.
Inventors:
MORIKITA NOBUO
Application Number:
PCT/JP1992/001667
Publication Date:
December 09, 1993
Filing Date:
December 18, 1992
Export Citation:
Assignee:
SUMITOMO HEAVY INDUSTRIES (JP)
International Classes:
B29C45/26; B29C45/56; B29C45/57; (IPC1-7): B29C45/56
Foreign References:
| JPS5812741A | 1983-01-24 | |||
| JPS6183016A | 1986-04-26 | |||
| JPS6322620A | 1988-01-30 | |||
| JPS63212057A | 1988-09-05 | |||
| JPH0289615A | 1990-03-29 | |||
| JPH0226723A | 1990-01-29 | |||
| JPS4826845A | 1973-04-09 | |||
| JPS4826844A | 1973-04-09 |
Other References:
See also references of EP 0597108A4
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