Process for automatically interchanging die assemblies in a meta

Details Process for automatically interchanging die assemblies in a meta Process for automatically interchanging die assemblies in a meta

1974-09-27

1976-03-23

Hall, Carl E.

Metal deforming

With stopping upon completion of prescribed operation

Metal deforming by use of roller or roller-like tool element

29568, 72 7, 72 22, 72448, 100DIG18, B30B 1500

Patent

active

039452301

ABSTRACT:
Process and apparatus are disclosed for automatically interchanging die assemblies in a metal working press having a pair of moving bolsters to be used alternately in the press. An initial condition setting device having control circuits connected to various portions of the press for setting data such as the number of products, the pressing force of the slide of the press for working, the die height for different die assemblies, the balancer air pressure, the die cushion stroke, the die cushion air pressure, the kind of operation of the die cushion for the drawing, the locking or the shearing and the blank holder air pressure is provided for sequentially carrying out various steps. The steps include moving the bolster having the used die assembly thereon out of the press to a predetermined exterior position after unclamping the die assembly and moving another bolster having a new die assembly to be used next set thereon in position into the press for the next operation and clamping the die assembly to be ready for the next operation with removal of safety pins in the die assembly. The die height adjustment, the die cushion air pressure adjustment are carried out fully automatically during the operation, thereby permitting the changing of die assemblies in the entire press line or the changing of die assembly in an individual press to be automatically carried out while the operation of the operator is simplified and the safety in operation is insured so as to improve the efficiency of the press.

REFERENCES:
patent: 3559446 (1971-02-01), Dom et al.
patent: 3727442 (1973-04-01), Ridgway et al.
patent: 3858286 (1975-01-01), Nuhejl

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