Scratch preventing device for hot trimming die

• Main Authors: GAN XIANGLU, XU WEIWEI, GAO JINGFU, FEI DONGYANG, WANG YUNCHENG
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2020
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

The invention discloses a scratch preventing device for a hot trimming die, belongs to the field of plastic forming and particularly relates to a forge piece hot trimming die. The scratch preventing device comprises an upper die insert, an upper trimming insert, a lower die insert and a lower trimming insert; the upper trimming insert is fixedly arranged on the bottom surface of the upper die insert; the lower trimming insert is fixedly arranged on the lower die insert; the inner edge of the lower trimming insert and the outer edge of the upper trimming insert are matched to jointly cut a forge piece; and a plurality of groups of scratch preventing devices are arranged on the side, close to the lower die insert, of the lower trimming insert and are arranged on the outer side of the cuttingedge of the lower trimming insert. The scratch preventing device has the advantages of being simple in structure, convenient in mounting and dismounting and low in cost and facilitates debugging andrectification and reform o