| 摘要 |
<p>The bilaterally acting pressure beam for a cutting machine, consists of hold-down elements (P, P') in form of hold-down plates (1, 101), which are guided at their end side edges by vertically arranged guide means (3, 103) fixedly supported by the cutting machine frame end side members (4, 104) at the inward sides thereof. The hold-down plates (1, 101) are each fitted with at least two suitably spaced apart rollers (12, 112) which are rotatably fitted on bolts (13) fixedly secured by means of nuts to, and at right angles with the relative hold-down plate, so as to project from the inward side thereof, and are respectively engaged in the at least two slanted slots (11, 111) with a substantially horizontal upper end section (211), that perform a cam function, and are provided in the actuating plates (6, 106) for lifting and lowering the hold-down plates. The actuating plates (6, 106) which are supported and guided by a horizontally arranged plate (15), are arranged vertically in an adjacent relation with the inward side of the respective hold-down plate (1, 101) parallelly thereto, and are supported at their end side edges so as to be longitudinally movable, and guided by vertically arranged, fixedly mounted guides (7, 107; 3, 103). The actuating plates (6, 106) are selectively driven by the respective one of the two horizontally arranged, fluid pressure-operated, double-acting, cylinder-and-piston units (9, 109), which are preferably supported by the cutting machine frame end side member (4) at the outward side thereof. The hold-down plates (1, 101) are held in their uplifted position by their rollers (12, 112) being moved into the upper end section (211) of the respective slots (11, 111), so that the hold-down plates are prevented from falling down by the action of gravity. <IMAGE></p> |
