Patent ID: 8291739
Filing Date: 2012-10-23
Classification: B26D,B26F,Y10T

Abstract:
1. A trimming press working apparatus comprising: trimming means for cutting a plate material along a trimming line which divides a product portion from a non-product portion in the plate material; and scrap cutting means for cutting the non-product portion along a scrap severing line intersecting the trimming line, said trimming means including one trimming press die means having a first cutting blade extending along the trimming line and another trimming press die means for cutting the plate material along the trimming line in cooperation with the first cutting blade of said one trimming press die means, said scrap cutting means including one scrap cutting press die having a second cutting blade extending along the scrap severing line and another scrap cutting press die having a third cutting blade extending along the scrap severing line so as to cut the non-product portion along the scrap severing line in cooperation with the second cutting blade of said one scrap cutting press die, said trimming line including first and second trimming line portions and a third trimming line portion disposed between said first and second trimming line portions and having a one end intersected with a one end of the scrap severing line, said another trimming press die means including main trimming press die means having a fourth cutting blade extending along the first and second trimming line portions so as to cut the plate material along the first and second trimming line portions in cooperation with the first cutting blade of said one trimming press die means, and auxiliary trimming press die means having a movable cutting blade extending along the third trimming line portion to be movable relative to the fourth cutting blade of said main trimming press die means so as to cut the plate material in cooperation with the first cutting blade of said one trimming press die means along the third trimming line portion, said auxiliary trimming press die means having liquid pressure generating means for imparting to the movable cutting blade a cutting force based on compressible liquid pressure.