Extrusion machinery
AssigneeBrazeway, Inc.
InventorEugene A. Beekel
Life of this patent
Estimating the term…
Abstract
A two wheel conform type aluminum extrusion machine and a die assembly and subassembly for extruding tubing and/or cladding a core material. The die subassembly permits lateral adjustment of a die ring relative to a mandrel to assure uniform wall thickness in the extruded tubing. A method of utilizing the die subassembly comprises assembly thereof and prefilling the subassembly with molten aluminum.
Claims14
A metal extrusion machine of the type having a pair of stock feed wheels having peripheral feed grooves for receiving the stock and mounted for rotation about spaced parallel axes relative to a rigid machine frame wherein the improvement comprises:
- an extrusion die assembly having a rear terminal surface, a forward terminal surface, a longitudinal central extrusion output axis extending between said terminal surfaces, a die mounted concentrically about said axis in fixed spatial relation to and between said terminal surfaces and having oppositely inwardly directed input channels terminating in outboard ports;
- stop means fixed to said machine frame mediate said wheels;
- guide means for locating said assembly symmetrically between said wheel axes, perpendicular to said wheel axes, and against said stop means so that said ports are aligned with said grooves to receive said stock therefrom;
- and
- latch means bearing against said forward terminal surface to hold said assembly against said stop means during operation thereof.
Apparatus as defined in claim further including metal stock feed plates disposed on opposite sides of said die assembly adjacent and spaced from the peripheries of said wheels, adjacent said peripheral grooves, said plates on each side being spaced along the periphery of said wheel to provide a continuous path for the flow of metal stock thereover en route to said ports.
For use in a metal extrusion machine of the type having a pair of stock feed wheels having peripheral feed grooves for receiving stock therein and mounted for rotation about spaced parallel axes relative to a rigid machine frame:
- a die subassembly comprising a die block having a rear surface, a front surface, opposite angled lateral exterior surfaces, a central cavity, stock feed channels extending inwardly from the exterior surfaces to said cavity, and an axial through-bore mediate said surfaces and extending between the front and rear surfaces;
- means for mounting an extrusion mandrel in said through-bore adjacent said rear surface and extending axially into said cavity;
- an extrusion die ring having an axial bore and mounted in said cavity adjacent said front surface and axially aligned with said mandrel to define the inner and outer diameters of an extrusion therebetween;
- and
- means for laterally and axially securing said extrusion die in said die block.
Apparatus as defined in the die claim above, wherein said securing means permits lateral adjustment in the position of the extrusion die relative to the die block.
A method of operating an extrusion die for use in a metal extrusion machine of the type having a pair of stock feed wheels having peripheral feed grooves for receiving stock therein and mounted for rotation about spaced parallel axes relative to a rigid machine frame a die assembly being of the type which comprises a die block having a rear surface a front surface, opposite angled lateral exterior surfaces, a central cavity, stock feed channels extending inwardly from the exterior surfaces to said cavity, and an axial through-bore mediate said surfaces and extending between the front and rear surfaces, means for mounting an extrusion mandrel in said through-bore adjacent said rear surface and extending axially into said cavity;
- an extrusion die ring having an axial bore and mounted in said cavity adjacent said front surface and axially aligned with said mandrel to define the inner and outer diameters of an extrusion therebetween;
- means for laterally and axially securing said extrusion die in said die block, wherein the method comprises the steps of:
- assembling the die block, extrusion mandrel and die ring;
- and
- filling the subassembly with molten metal of the type which is to be extruded through said die.
Dependencies are inferred from the claim text.