Device for manufacturing, by extrusion, a piece having a recesse

Details Device for manufacturing, by extrusion, a piece having a recesse Device for manufacturing, by extrusion, a piece having a recesse

1981-01-22

1983-11-29

Gilden, Leon

Metal deforming

By use of closed-die and coacting work-forcer

With stripping or ejecting from tool

72354, 72361, 72427, B21D 4500

Patent

active

044174616

ABSTRACT:
A device for manufacturing, by extrusion, a piece having a recessed portion in its lateral surface, and, on one side, a head and, on the opposite side, a tail, which device comprises a fixed die holder containing a die, a punch borne by a mobile support and structure for axially displacing the punch to engage it in the die and to disengage it therefrom together with means for ejecting the extruded piece. The device further comprises, in front of the fixed die holder, a coaxial mobile die holder composed of two parts, forming clamp. A spring and cooperating cams are provided for opening and closing the mobile die holder-forming clamp and an actuator is provided for displacing the mobile die holder in translation parallel to the axis of the punch and of the die. After the actual extrusion operation, the mobile die holder-forming clamp draws on the head of the extruded piece so as partially or totally to disengage its tail from the die, then the mobile die holder is opened so as to release the piece and allow ejection thereof.

REFERENCES:
patent: 1619495 (1927-03-01), Wilcox
patent: 2979004 (1961-04-01), Kenville
patent: 3188849 (1965-06-01), Wisebaker et al.

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