我厂自制的垫片多年来都是采用冲床单件压制,即在冲床一个工作行程中,只落下一个垫片,垫片中心料块全部作废,原材料利用率仅为43％,为此,我们改进了模具,使其成为双件同时落下的组合模具(见附图),经使用效果很好,生产效率提高一倍,原材料节约了40％。由附图可见,上模固定在冲床滑块上,带动上冲模上下移动。上冲头及上外垫模固定在上冲模上,完成落下小垫内废料和大垫圈。上内退件套及外退料套在大、小推杆的作用下实现上退料。下冲模固定在工作台上,由下芯模、下模与上模配合落下小垫片和外 For many years, our self-made gaskets have been pressed by a single piece of punch press. That is, in the working stroke of a punch press, only one gasket is dropped, and all the gasket materials in the center are discarded, and the utilization rate of raw materials is only 43%. Therefore, we The mold has been improved to make it a two-piece composite mold (see photo), which is well used, doubling production efficiency and saving 40% on raw materials. As can be seen from the drawings, the upper mold is fixed on the press slider and drives the upper punch to move up and down. The upper punch and the outer pad die are fixed on the upper die, and the waste and the large washers in the pad are dropped. On the back of the sets and sets of materials in the back sleeve in the small putt under the action of the material on the back. The lower die is fixed on the workbench, the lower die and the lower die cooperate with the upper die to drop the small shims and the outer