Patent EP0125788A2 successfully refreshed from Google Patents.
EP0125788A2
Expired / Lapsed
EP
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Continuous extrusion apparatus
Assignee: BWE Ltd
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Filing: 1984-04-11
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Granted: —
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Expires: 2004-04-11
Abstract
Abstract Apparatus for the continuous extrusion of metals in which feed is introduced into a pair of circumferential grooves 4 (Figure 4) in a rotating wheel 2 to contact arcuate tooling 14 and abutments 24. The feed is constrained by the abutments 24 to flow through exit apertures 32 in a die top 28 from the respective grooves 4 to a substantially toroidal chamber 34 around a hollow, open ended, portal mandrel 42 to extrude through an annular die orifice 38 as a cladding for a continuous core 44. Cooling air may be supplied to the interior of the cladding, which is subsequently swaged down on to the core. A solid mandrel may be utilised where it is desired to extrude tube.
Inventors
- 👤 Anthony John Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 21:21
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/005; B21C23/02; B21C23/04; B21C23/08; B21C23/085; B21C23/22; B21C23/24; B21C23/26; B21C23/30; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929; Y10T29/51; Y10T29/5185
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
Continuous extrusion apparatus having a rotatable wheel (2) formed with two identical circumferential grooves(4), arcuate tooling (14) with portions (22) bounding radially outer portions of the respective grooves provided with exit apertures (32) extending in a generally radial direction from the respective grooves to a single chamber and abutments (24) displaced in the direction of rotation from the apertures extending into the grooves, characterized in that the exit apertures (32) extend through a die top (28) from the respective grooves (4) to a substantially toroidal chamber (34) around a portal mandrel (26,42,84) discharging axially of the mandrel through a die orifice (38) of uninterrupted annular cross-section intermediate the mandrel (26,42,84) and a die body wall (35).
Claim 2
Dependent Claim
116 words
Continuous extrusion apparatus having a rotatable wheel (2) formed with two identical circumferential grooves(4), arcuate tooling (14) with portions (22) bounding radially outer portions of the respective grooves provided with exit apertures (32) extending in a generally radial direction from the respective grooves to a single chamber and abutments (24) displaced in the direction of rotation from the apertures extending into the grooves, characterized in that the exit apertures (32) extend through a die top (28) from the respective grooves (4) to a substantially toroidal chamber (34) around a portal mandrel (26,42,84) discharging axially of the mandrel through a die orifice (38) of uninterrupted annular cross-section intermediate the mandrel (26,42,84) and a die body wall (35).
Claim 3
Dependent Claim
26 words
Continuous extrusion apparatus as claimed in Claim 1, characterised in that the portal mandrel (26, 42) extends in a direction generally tangential to the wheel (2).
Claim 4
Dependent Claim
34 words
Continuous extrusion apparatus as claimed in Claim 2, characterised in that the direction of discharge through the die orifice (38) corresponds to the direction of rotation of the wheel (2) at the abutments (24).
Claim 5
Dependent Claim
36 words
Continuous extrusion apparatus as claimed in Claim 2 or Claim 3, characterised in that the portal mandrel (42) is hollow and open-ended and means are provided arranged to supply a core member (44) through the mandrel.
Claim 6
Dependent Claim
25 words
Continuous extrusion apparatus as claimed in Claim 4, characterised in that swaging means are provided to swage the extruded product on to the core member.
Claim 7
Dependent Claim
63 words
Continuous extrusion apparatus as claimed in Claim 5, characterised in that a tubular shroud (48) is positioned with a forward portion (74) extending internally co-axially of, and radially spaced from, a portion of the hollow portal mandrel (42) adjacent and beyond the extrusion orifice (38) and around the core member (44) to form co-axial passageways (50, 76) for the flow of cooling fluid.
Claim 8
Dependent Claim
33 words
Continuous extrusion apparatus as claimed in any preceding claim, characterised in that passages are provided in the die top (28) and in the portal mandrel (26, 84) for the flow of cooling fluid.
References Cited (Backward Citations)
No citation records indexed.
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