US 5,157,955 AGranted

Continuous extrusion apparatus

AssigneeBWE Limited

InventorsDaniel J. Hawkes, Douglas E. Anderson, Phillip A. Jones

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Abstract

Continuous extrusion apparatus (FIG. 1) including a rotatable, grooved, wheel 2 is provided with a shoe 6 mounted on a pivot 7 to be rotatable between a position engaging the wheel 2 and a dis-engaged position. The shoe 6 carries a tooling cartridge 10 including an abutment block 14, an expansion block 16, a die block 18 and an exit block 20 connected together with bolts 22 and held in position by locking keys 46 and a retaining ring 50. A reciprocable ram 60 registers with the cartridge 10 when the shoe 6 is in the dis-engaged position and is operable to raise a cartridge 10 from an associated heating chamber 56 into the shoe 6 or to lower a cartridge 10 from the shoe 6 into a storage chamber (not shown). By utilizing a cartridge 10, change-over and pre-heating of sets of dies is facilitated, enabling the apparatus to be connected directly to a continuous casting furnace (not shown).

Continuous extrusion apparatus, comprising:

a) a rotatable wheel having a plurality of spaced apart circumferential grooves;
b) arcuate tooling with a shoe portion bounding radially outer portions of the respective grooves formed with exit apertures extending in a generally radial direction from the respective grooves to a chamber;
c) abutments displaced in the direction of rotation of the wheel from the apertures extending into the grooves, the chamber discharging to a die orifice;
d) the tooling comprising an entry block positioned in a recess in the shoe portion bounding the grooves, an abutment block, an expansion block, a die block and an exit block;
e) the abutment block, expansion block, die block and exit block are serially positioned in a stepped bore in the shoe portion;
f) the abutment block engaging upon a shoulder in the bore adjacent the entry block;
g) means for securing the exit block axially of the bore;
h) the abutment block extending through an aperture in the entry block of generally frusto-conical form;
i) flat faces formed on abutting faces of the abutment block and the entry block co-acting angularly to locate the abutment block relative to the entry block;
j) the abutment block, the expansion block, the die block and the exit block are disconnectably secured together to form a tooling cartridge;
k) a heating chamber and a storage chamber each arranged to accommodate the tooling cartridge are movably positioned to be indexed alternately into register with the bore at an open position of the shoe;
l) a support ram is reciprocable through the respective heating or storage chamber when indexed into registration with the bore to effect support of the tooling cartridge;
m) the tooling cartridge is removable from and insertable into the bore as a whole supported on the support ram;
and
n) the heating chamber is adapted to effect heating of the tooling cartridge prior to insertion into the bore.

12 more elements

Abstract

Claims7