Support pin for clamping die assembly

Details Support pin for clamping die assembly Support pin for clamping die assembly

1977-05-16

1978-04-11

Combs, E. M.

Metal deforming

By deflecting successively-presented portions of work during...

By use of work-contacting wiper and moving, work-holding form

B21D 704

Patent

active

040832163

ABSTRACT:
A clamping die assembly comprises a rotatable platen having first and second die members mounted thereon for rotation therewith. The second die member is adapted to reciprocate on the platen to engage the first die member to clamp a tube therebetween. A rearward end of the tube is fixedly held and the platen is rotated to wrap the tube around a die cavity formed in the first die member. A pin is reciprocally mounted on the first die member, adjacent to and below the die cavity, to support the tube prior to clamping of the tube between the die members. A coil spring normally biases the pin to an extended position to support the tube and compresses upon clamping of the die members together whereby the pin is retracted within the confines of the first die member.

REFERENCES:
patent: 643760 (1900-02-01), Brinkman
patent: 749029 (1904-01-01), Condon
patent: 2702065 (1955-02-01), Franck
patent: 2938565 (1960-05-01), Klamm
patent: 3261193 (1966-07-01), Van Harten
patent: 3433042 (1969-03-01), Crihfield et al.
patent: 3448602 (1969-06-01), Stanley et al.

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