由于层压塑料零件生产规模的扩大、自动线和高速压机的应用,使得胶纸板和玻璃胶布板等制品的剪切、落料和冲孔用模有进一步提高寿命的必要。当孔径为(1—1.5)mm时,冲孔模报废得相当迅速。对胶纸板和玻璃胶布板零件生产用模的使用条件加以分析表明,冲孔模报废的主要原因在于冲头 Due to the expansion of the production scale of laminated plastic parts, the application of automatic line and high-speed press makes the cutting, blanking and punching of adhesive tape and glass adhesive tapes and other molds necessary to further improve the service life. When the aperture is (1-1.5) mm, punching die reported quite quickly. Analysis of the conditions of use of molds for the production of adhesive tapes and glass tapes indicates that the main reason for scrapped punching dies is that the punch