UTILIZATION 0F COOLING MEDIUM GAS IN LOW TEMPERATURE FORMATION AND LOW TEMPERATURE FORMING APPARATUS UTILIZING COOLING MEDIUM GAS

摘要

PURPOSE: To improve the working efficiency and to reduce the production cost by utilizing cooling medium gas generated in a blank cooling device, at the time of press-forming the blank while cooling with the cooling medium of liquid nitrogen or liquid helium, etc. ;CONSTITUTION: At the time of forming by taking out each one piece from a stacker 1 laminated with the blank M, dipping into the cooling medium 3 in a blank cooling device 5 and supplying to a press machine 7 after cooling to the low temp. range, the low temp. cooling medium of gas generated in the blank cooling device 5 is introduced into a housing 47 in the range of the stacker 1 and utilized to the pre-cooling of the blank M, and the cooling of a carrying device 11, a laying table 13, etc., of the blank M. At the same time, the cooling gas is introduced into a place, at where the working range containing the upper and the lower dies 7U, 7L in the press machine 7 is surrounded by a casing, to pre-cool the working range. By this method, at the time of carrying the cooled blank M from the blank cooling device 5, the production of the water drips caused by the dew condensation is prevented.;COPYRIGHT: (C)1996,JPO