公开(公告)号：US4527684A

公开(公告)日：1985-07-09

申请号：US451199

申请日：1982-12-20

申请人： Vincent A. Eggeman ,  Jerome D. Bubb ,  Harvey R. Siegel ,  Francis H. Wichman

发明人： Vincent A. Eggeman ,  Jerome D. Bubb ,  Harvey R. Siegel ,  Francis H. Wichman

IPC分类号： F16P3/16 ,  B30B15/12 ,  F16P3/14

CPC分类号： F16P3/16

摘要： A reciprocating sensing shield for use in connection with a power press such as a press break or bending machine is operatively mounted on the press ram for relative vertical movement and is controlled to be positioned to guard the "pinch point" of the dies and furthermore to stop downward movement of the ram should an operator's fingers or hands be in the proximity to the "pinch point" just prior to the movable die arriving thereat. The ram and shield descend as a unit until the ram reaches the "pinch point" at which time the shield is positioned to cover the break thereby to prevent an operator from inserting his hands or fingers into the break. As the ram reaches the "pinch point", the sensing shield immediately raises clear of the break. As the work piece is formed by continued descent of the ram, the ram reverses (rises) and the sensing shield is carried upwardly with it. When the ram is top dead center, the sensing shield is caused to drop into its lowermost position relative to the ram and the system is in readiness for another cycle. Should an operator's hand be in the danger area beneath the sensing shield as the ram and shield are lowering, engagement with the operator's hand triggers a mechanism which stops the ram. Thus, both shielding and sensing functions are provided.

摘要翻译： 用于与压力机或压弯机等电动压力机连接的往复式传感罩被可操作地安装在压力机压头上用于相对的垂直运动，并被控制以定位以保护模具的“夹点” 如果在活动模具到达那里之前，操作者的手指或手在“夹点”附近，则停止压头的向下运动。 柱塞和护罩作为一个单元下降，直到冲头到达“夹点”，此时护罩定位以覆盖断裂，从而防止操作者将他的手或手指插入断裂。 当冲头达到“夹点”时，感应护罩立即从突破中清除。 当工件由冲头的持续下降形成时，冲头反向（上升），并且传感屏蔽件随其向上承载。 当压头是上止点时，感测屏蔽件相对于压头落入其最低位置，并且系统准备再次循环。 如果操作人员的手处于感测屏蔽下方的危险区域，因为柱塞和屏蔽层正在下降，与操作员手的接合将触发一个停止压头的机构。 因此，提供了屏蔽和感测功能。