EP0202953A2 - Appareil d'extrusion continue - Google Patents

Appareil d'extrusion continue Download PDF

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Publication number
EP0202953A2
EP0202953A2 EP86303967A EP86303967A EP0202953A2 EP 0202953 A2 EP0202953 A2 EP 0202953A2 EP 86303967 A EP86303967 A EP 86303967A EP 86303967 A EP86303967 A EP 86303967A EP 0202953 A2 EP0202953 A2 EP 0202953A2
Authority
EP
European Patent Office
Prior art keywords
shroud
mandrel
continuous extrusion
extrusion apparatus
extrusion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP86303967A
Other languages
German (de)
English (en)
Other versions
EP0202953A3 (fr
Inventor
Douglas Edward Anderson
Daniel John Hawkes
Anthony John Vaughan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Babcock Wire Equipment Ltd
Original Assignee
Babcock Wire Equipment Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Babcock Wire Equipment Ltd filed Critical Babcock Wire Equipment Ltd
Publication of EP0202953A2 publication Critical patent/EP0202953A2/fr
Publication of EP0202953A3 publication Critical patent/EP0202953A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/005—Continuous extrusion starting from solid state material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/22—Making metal-coated products; Making products from two or more metals
    • B21C23/24—Covering indefinite lengths of metal or non-metal material with a metal coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/22—Making metal-coated products; Making products from two or more metals
    • B21C23/24—Covering indefinite lengths of metal or non-metal material with a metal coating
    • B21C23/26—Applying metal coats to cables, e.g. to insulated electric cables
    • B21C23/30—Applying metal coats to cables, e.g. to insulated electric cables on continuously-operating extrusion presses

Definitions

  • This invention relates to apparatus for the forming of metals by a continuous extrusion process in which feedstock is introduced into a circumferential groove in a rotating wheel to pass into a passageway formed between the groove and arcuate tooling extending into the groove.
  • the tooling includes an orifice in a die top extending in a generally radial direction from the groove to a die and an abutment is provided to constrain the feedstock to flow through the orifice and the die.
  • EP-A-0125788 there is described continuous extrusion apparatus in which the orifice leads to a toroidal, extrusion chamber.
  • a portal mandrel is positioned by means of a stub in the die top and extends horizontally and parallel to a line tangential to the wheel co-axially through the extrusion chamber and a die body wall to form an uninterrupted extrusion orifice discharging through the face of the die top.
  • the mandrel is of hollow, open-ended form positioned with a stepped rear end portion co-acting with correspondingly stepped bores in the die top.
  • a stream of cooling air is supplied to the interior of the mandrel and directed into contact with the interior of the extruded product by a shroud extending internally and forwardly of the mandrel, the air exhausting internally of the shroud to the rear of the die top.
  • continuous extrusion apparatus including a rotatable wheel formed with a circumferential groove, arcuate tooling having a portion bounding a radially outer portion of the groove to form a passageway, an abutment portion extending into the groove, and an orifice in a die top portion extending in a generally radial direction from the passageway to a toroidal extrusion chamber, the toroidal extrusion chamber discharging to a hollow portal mandrel positioned in the die top portion, and a tubular shroud extending internally and forwardly of the hollow portal mandrel, the apparatus being adpated to extrude a metallic cladding around a temperature sensitive core, in which the shroud is fabricated of a material having high thermal insulation properties and is formed with a thickness and length sufficient to limit to an acceptable rate transfer from the extruded metallic cladding of heat generated by extrusion to the temperature sensitive core.
  • a rotatable wheel 2 formed with a circumferential groove 4 and arcuate tooling 6 bounding a radially outer portion of the groove is provided with an exit aperture 8 extending in a generally radial direction from the groove to a toroidal extrusion chamber 10.
  • a hollow portal mandrel 12 is positioned by means of a first shoulder 14, in a die chamber portion 16 of the tooling to extend horizontally and parallel to a line tangential to the wheel co-axially through the extrusion chamber to form, in conjunction with an annular cross-section die body 18 seated on a second shoulder 20 formed on the die chamber portion 16, an uninterrupted extrusion orifice 22 discharging through the face 24 of the die tooling 6.
  • the mandrel 12 is open ended and has a braided, flexible, glass fibre shroud 26 positioned therein by forming a rear end portion of the shroud with an outer enlargement 28 seating on a shoulder 30 provided at the entry at the rear of the mandrel.
  • a temperature sensitive core 32 which is to be clad such as core having a plastics material as an outer layer, is fed, in the same direction as the direction of feed of cladding product feedstock 34, through the hollow mandrel 12 emerging at the extrusion orifice 22 to receive a cladding 36 of the extruded product.
  • the braided, glass fibre, shroud 26 is of sufficient length and thickness as to protect the core 32 from the heat emitted from the mandrel 12 and the cladding 36, which immediately after extrusion is at a temperature of about 450 o C, by limiting the rate of heat transfer from the product to the core to acceptable rates.
  • a reducing roller or die system (not shown) is provided to effect reducing down of the extruded cladding 36 on to the core 32 beyond the forward portion 38 of the shroud 26 where the temperature of the cladding drops to an acceptable level through heat dissipation to the surrounding air or other cooling means.
  • the braided, glass fibre, shroud 26 is flexible the cladding 36 and the core 32 are free to deflect into a curve between the extrusion orifice 22 and take up means (not shown), thereby avoiding undue stress on the mandrel and the cladding.
  • the shroud is arranged to be slidably positionable within the mandrel and is fed into and through the hollow mandrel 12 once steady extrusion conditions are achieved until the enlargement 28 on the shroud seats on the shoulder 30 on the mandrel.
  • a shroud of material having high thermal insulating properties of a rigid form extends co-axially of the hollow mandrel.
  • a rear end portion of the shroud is formed with an outer enlargement seating on a shoulder at the entry at the rear of the mandrel and extends internally of the mandrel to project forwardly within the extruded tube a distance to enable sufficient cooling of the extended tube to occur before contact with heat sensitive core material fed through the shroud, the thickness of the shroud being sufficient thermally to protect the core material from the heat in the hollow mandrel and in the tube immediately following extrusion.
  • the heat may be dissipated to the surrounding air by natural or forced convection. Further heat dissipation may be achieved by channelling a flow of coolant, such as air or nitrogen along the exterior or interior of the shroud to exhaust internally or externally of the shroud.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Extrusion Of Metal (AREA)
  • Manufacturing Of Electric Cables (AREA)
EP86303967A 1985-05-24 1986-05-23 Appareil d'extrusion continue Withdrawn EP0202953A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8513158 1985-05-24
GB858513158A GB8513158D0 (en) 1985-05-24 1985-05-24 Continuous extrusion apparatus

Publications (2)

Publication Number Publication Date
EP0202953A2 true EP0202953A2 (fr) 1986-11-26
EP0202953A3 EP0202953A3 (fr) 1989-03-15

Family

ID=10579627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86303967A Withdrawn EP0202953A3 (fr) 1985-05-24 1986-05-23 Appareil d'extrusion continue

Country Status (3)

Country Link
EP (1) EP0202953A3 (fr)
JP (1) JPS61276715A (fr)
GB (1) GB8513158D0 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006043069A1 (fr) * 2004-10-20 2006-04-27 Bwe Limited Appareil d’extrusion continue
US7131308B2 (en) 2004-02-13 2006-11-07 3M Innovative Properties Company Method for making metal cladded metal matrix composite wire
WO2008028866A1 (fr) * 2006-09-02 2008-03-13 Uponor Innovation Ab Procédé de fabrication d'une pièce cylindrique en forme de boudin
US8061173B2 (en) 2007-11-15 2011-11-22 Bwe Limited Continuous extrusion apparatus
US8281634B2 (en) 2007-06-13 2012-10-09 Bwe Limited Continuous extrusion apparatus and method for the production of cable having a core sheathed with aluminum based sheath with a continuous extrusion apparatus
CN107159730A (zh) * 2017-06-20 2017-09-15 远东电缆有限公司 一种铝型线、铝型排连续挤压机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2612918B2 (ja) * 1988-11-28 1997-05-21 住友電気工業株式会社 芯材を金属被覆する方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB410624A (en) * 1932-06-15 1934-05-24 Siemens Ag Improvements in and relating to a method and apparatus for the production of extruded sheaths for cables from metals extruded at relatively high temperatures
GB631127A (en) * 1947-01-20 1949-10-27 Standard Telephones Cables Ltd Improvements in or relating to electric cables
GB649708A (en) * 1948-04-05 1951-01-31 Johnson And Phillips Ltd Improvements in or relating to electric cables
US3073441A (en) * 1960-05-11 1963-01-15 Pirelli Apparatus for hot-sheathing electric cables with tubular metal sheaths
EP0125788A2 (fr) * 1983-04-12 1984-11-21 B.W.E. Limited Appareil d'extrusion continue
JPS59223114A (ja) * 1983-06-03 1984-12-14 Furukawa Electric Co Ltd:The プラスチツク被覆線条体入りアルミニウム管の製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB410624A (en) * 1932-06-15 1934-05-24 Siemens Ag Improvements in and relating to a method and apparatus for the production of extruded sheaths for cables from metals extruded at relatively high temperatures
GB631127A (en) * 1947-01-20 1949-10-27 Standard Telephones Cables Ltd Improvements in or relating to electric cables
GB649708A (en) * 1948-04-05 1951-01-31 Johnson And Phillips Ltd Improvements in or relating to electric cables
US3073441A (en) * 1960-05-11 1963-01-15 Pirelli Apparatus for hot-sheathing electric cables with tubular metal sheaths
EP0125788A2 (fr) * 1983-04-12 1984-11-21 B.W.E. Limited Appareil d'extrusion continue
JPS59223114A (ja) * 1983-06-03 1984-12-14 Furukawa Electric Co Ltd:The プラスチツク被覆線条体入りアルミニウム管の製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 98 (M-375)[1821], 27th April 1985; & JP-A-59 223 114 (FURUKAWA DENKI KOGYO K.K.) 14-12-1984 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7131308B2 (en) 2004-02-13 2006-11-07 3M Innovative Properties Company Method for making metal cladded metal matrix composite wire
WO2006043069A1 (fr) * 2004-10-20 2006-04-27 Bwe Limited Appareil d’extrusion continue
CN100486725C (zh) * 2004-10-20 2009-05-13 Bwe有限公司 连续挤压设备
US7980110B2 (en) 2004-10-20 2011-07-19 Bwe Limited Continuous extrusion apparatus
WO2008028866A1 (fr) * 2006-09-02 2008-03-13 Uponor Innovation Ab Procédé de fabrication d'une pièce cylindrique en forme de boudin
EA015142B1 (ru) * 2006-09-02 2011-06-30 Юпонор Инновейшн Аб Способ изготовления цилиндрического пруткообразного изделия
US8491744B2 (en) 2006-09-02 2013-07-23 Uponor Innovation Ab Method for the production of a cylindrical, strand-shaped part
EP3287253A1 (fr) * 2006-09-02 2018-02-28 Uponor Innovation AB Procédé de fabrication d'une partie de forme allongée cylindrique
US8281634B2 (en) 2007-06-13 2012-10-09 Bwe Limited Continuous extrusion apparatus and method for the production of cable having a core sheathed with aluminum based sheath with a continuous extrusion apparatus
US8061173B2 (en) 2007-11-15 2011-11-22 Bwe Limited Continuous extrusion apparatus
CN107159730A (zh) * 2017-06-20 2017-09-15 远东电缆有限公司 一种铝型线、铝型排连续挤压机

Also Published As

Publication number Publication date
GB8513158D0 (en) 1985-06-26
JPS61276715A (ja) 1986-12-06
EP0202953A3 (fr) 1989-03-15

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Inventor name: HAWKES, DANIEL JOHN

Inventor name: VAUGHAN, ANTHONY JOHN

Inventor name: ANDERSON, DOUGLAS EDWARD