Method and apparatus for forming containers

Details Method and apparatus for forming containers Method and apparatus for forming containers

B - Operations, Transporting

21

D

113/32

B21D 51/18 (2006.01) B21D 22/24 (2006.01) B21D 51/26 (2006.01)

Patent

CA 1312790

ABSTRACT A method of forming a container in one or more double acting presses includes the steps of blanking, drawing an inverted cup and reverse drawing the inverted cup while retaining a flange thereon at a first station and then transferring the cup (FC) to a second station where the cup is drawn to an inverted configuration and then reverse drawn to form a finished container (CFC) again retaining the flange throughout. The drawing operations at each station are performed in a single stroke of the press. The appara- tus at the first station includes a blank and draw punch (50) and a fixed, hollow die core ring (90) with the punch telescoping over the ring to form the inverted cup and a draw horn (31) telescoping within the ring to reverse draw the cup (FC). The apparatus at the second station includes a hollow redraw sleeve (160) and a pressure sleeve (143) telescoping over the redraw sleeve to invert the cup and a profile punch (131) telescoping within the redraw sleeve to reverse draw the cup (CFC).

547613

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