在仪器仪表的面板底板类零件加工中,经常需要冲裁一定形状的孔。因为零件的外形尺寸大,限制了有导柱模架的使用,所以一般采用无导向的敞开模。同样由于零件尺寸大的原因,用固定卸料板和悬臂式卸料板作为这类敞开模的卸料装置就不合适,而直接采用自由状态的橡皮来卸料,会妨碍导正销的定位或不能提供足够大的卸料力。通常 In the instrument panel panel parts processing, often need to punching a certain shape of the hole. Because parts of the large size, limited the use of guide pillar mold, it is generally used to guide the open mold. Also due to the large size of the parts, the use of fixed discharge plate and cantilevered stripper as the unloading device for such open mold would not be suitable, but the direct use of rubber free to discharge, will hinder the positioning of the pilot pin Or can not provide enough unloading force. usually