Weft brake for weaving looms, has non-magnetic flat plate and flexible magnetic lamina between which weft thread slides

摘要

A weft brake has rigid, fixed and flat plate (3) made of non-magnetic material; and a flexible lamina (4) made of magnetic material between which a weft thread (F) slides. The lamina is actuated against the plate using permanent magnets (6-9). The magnets are supported by a moveable yoke (5) that is subjected to an electric actuator (10). A weft brake has rigid, fixed and flat plate made of non-magnetic material and a flexible lamina made of magnetic material between which a weft thread slides. The lamina is actuated against the plate using permanent magnets. The magnets are supported by a moveable yoke that is subjected to an electric actuator. The movement of the magnets varies the attraction applied by the magnets to the lamina and the pressure that the lamina applies to the thread.