COMPACT JACQUARD SELECTING CARD USING PIEZOELECTRIQUE ELEMENTS.

摘要

A compact electronic selection card applicable for use in Jacquard equipment, having a high-density array of selecting hooks (40) which are individually positioned by piezoelectric actuator elements (20). Each piezoelectric element (20) directly controls a selecting hook (40) for engaging a corresponding hooked rod connected to a warp yarn. The engaged rods are then lifted to form the shed. Because each element directly positions the hook rather than indirectly controlling a positioning mechanism, the selection card is mechanically simple and compact.