US 4,259,052 AGranted

Transfer press

AssigneeAida Engineering, Ltd.

InventorsShozo Imanishi, Fumiaki Umezawa, Toshiya Ishida, Harutsugu Nakayama

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Abstract

The transfer press has a blank-supply mechanism for supplying blanks which are materials for every kind of part to be manufactured by pressing, one by one to a press, a blank-transport mechanism for carrying blanks from the blank-supply mechanism to the press, a transfer feed mechanism for feeding blanks that have been supplied to the press one by one to dies of each stage along the bed of the press, a die exchange mechanism for exchanging dies when different parts are to be manufactured, a feed bar exchange mechanism for removing and exchanging feed bars which are a part of the transfer feed mechanism, when dies are to be changed, a die cooling oil circuit connecting mechanism for connecting a cooling circuit to a newly placed die in order to cool it, a pressure adjusting mechanism for die cushioning mounted on the bed of the press, and a program control mechanism for the automatic operation of the press, which controls the above-described mechanisms as well as the press in relation to blank supplying and manufacturing conditions.

Claims17

Dependent claims

A transfer press apparatus comprising:

a transfer press having a plurality of stages and a plurality of exchangeable dies;
a blank supply mechanism for supplying blanks;
a blank transport mechanism between said blank supply mechanism and said transfer press for carrying blanks from the said blank supply mechanism to the first stage of said transfer press;
a transfer feed mechanism including exchangeable feed bars extending in the direction of the stages of said transfer press;
a die exchange mechanism for automatic exchange of the dies of said transfer press;
a feed bar exchange mechanism for exchanging said feed bars together with said dies when the dies are exchanged by said die exchange mechanism;
a cushion cylinder at each stage of said transfer press;
a cushion pressure adjusting mechanism connected to each cushion cylinder for supplying necessary pressure to said cushion cylinder and depressurizing said cylinders to free them from the remainder of the transfer press during a die exchange operation;
and
a program control mechanism connected at least to said transfer feed mechanism, said die exchange mechanism, and said feed bar exchange mechanism for controlling the operation of said mechanism according to the processing of the blanks in said apparatus.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/056,974Filed 12 Jul 1979 · continuation
Priority: JP 53-8644015 Jul 1978
Granted: 31 Mar 1981
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B21D 43/18
Advancing work in relation to the stroke of the die or tool: by means in pneumatic or magnetic engagement with the work
B21D 37/14
Tools as parts of machines covered by this subclass: particular arrangements for handling and holding in place complete dies
B21D 43/055
Specially adapted for multi-stage presses: devices comprising a pair of longitudinally and laterally movable parallel transfer bars
B21D 43/057
Specially adapted for multi-stage presses: devices for exchanging transfer bars or grippers; Idle stages, e.g. exchangeable