Electric mold clamp

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 45/64 (2006.01) B29C 45/17 (2006.01)

Patent

CA 2191602

An electric mold clamping apparatus (20) and system are disclosed. A clamping mechanism (80) containing a pair of clamping members (40) is activated by an electric motor (62). The electric motor (62) operates a threaded piston (76) with acme threads which in turn operate a drive plate (110) to extend and retract the clamping members (40). The clamping members (40) are used to hold a mold plate in an injection molding machine (22). The clamping members (40) are pivotally attached to a drive plate mechanism and have a surface which mates with a wedge cam (140) to force the clamping member (40) against the mold plate. The stroke of the clamping mechanism (80) is regulated by an amperage draw on the electric motor (162). A limit switch (162) is used to terminate the end of the retracting stroke. An indicator light (194) is used to indicate the clamping position of the device (20).

La présente invention concerne un dispositif (20) et un système de serrage électrique de moule. Un mécanisme de serrage (80) constitué d'un couple d'éléments de serrage (40) est actionné par un moteur électrique (62) actionnant un piston fileté (76) à filetage Acmé. Ce piston actionne un plateau d'entraînement (110) commandant l'extension et le retrait des éléments de serrage (40) servant à maintenir une plaque de moule dans une machine à mouler par injection (22). Ces éléments de serrage (40), fixés de façon pivotante sur le mécanisme du plateau d'entraînement, présentent une surface qui s'adapte à une came en coin (140) appliquant de force l'élément de serrage (40) contre la plaque de moule. La course de l'élément de serrage (80) est commandée par le prélèvement d'intensité du moteur électrique (162). Un interrupteur bout de course (162) commande l'arrêt de la course de retrait. Un voyant lumineux (194) permet de signaler que le dispositif (20) est en position de serrage.

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