INJECTION MOLDING MACHINE

PROBLEM TO BE SOLVED: To provide an injection molding machine capable of almost linearly moving a punch when the punch is returned to the position in front of an opening after the opening is formed using the punch. SOLUTION: A molten resin material is injected in the molding cavity formed by a mold...

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Bibliographische Detailangaben
1. Verfasser:	KUMAGAI HIDEYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an injection molding machine capable of almost linearly moving a punch when the punch is returned to the position in front of an opening after the opening is formed using the punch. SOLUTION: A molten resin material is injected in the molding cavity formed by a mold 15 to perform mold clamping and a gate cutting punch 21 is adapted to the resin material to form the opening. Air pressure or oil pressure is used when the gate cutting punch 21 is moved in the direction opposite to the moving direction at the time of opening after the opening is formed to allow force to act on a piston 23.