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1. (WO2005102661) METHOD AND APPARATUS FOR COUNTERING MOLD DEFLECTION AND MISALIGNMENT USING ACTIVE MATERIAL ELEMENTS

Pub. No.:    WO/2005/102661    International Application No.:    PCT/CA2005/000415
Publication Date: Nov 3, 2005 International Filing Date: Mar 22, 2005
IPC: B29C 45/76
B29C 45/77
B29C 45/80
G01D 5/02
G01D 5/12
Applicants: HUSKY INJECTION MOLDING SYSTEMS LTD.
Inventors: NIEWELS, Joachim Johannes
ROMANSKI, Zbigniew
ARNOTT, Robin A.
Title: METHOD AND APPARATUS FOR COUNTERING MOLD DEFLECTION AND MISALIGNMENT USING ACTIVE MATERIAL ELEMENTS
Abstract:
Method and apparatus for controlling an injection mold having a first surface and a second surface includes an active material element configured to be disposed between the first surface and a second surface. The active material element may be configured to sense a force between the first surface and the second surface, and to generate corresponding sense signals. Transmission structure is coupled to the active material element and is configured to carry the sense signals. Preferably, an active material element actuator is also disposed between the first surface and a second surface, and is configured to provide an expansive force between the first surface and a second surface in accordance with the sense signals. The method and apparatus may be used to counter undesired deflection and/or misalignment in an injection mold.