EP0233064A2 - Appareil d'extrusion - Google Patents

Appareil d'extrusion Download PDF

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Publication number
EP0233064A2
EP0233064A2 EP87301028A EP87301028A EP0233064A2 EP 0233064 A2 EP0233064 A2 EP 0233064A2 EP 87301028 A EP87301028 A EP 87301028A EP 87301028 A EP87301028 A EP 87301028A EP 0233064 A2 EP0233064 A2 EP 0233064A2
Authority
EP
European Patent Office
Prior art keywords
die
passageway
extrusion
chamber
extrusion material
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Withdrawn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
EP87301028A
Other languages
German (de)
English (en)
Other versions
EP0233064A3 (fr
Inventor
Brian Maddock
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.)
Alform Alloys Ltd
Original Assignee
Alform Alloys 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 Alform Alloys Ltd filed Critical Alform Alloys Ltd
Publication of EP0233064A2 publication Critical patent/EP0233064A2/fr
Publication of EP0233064A3 publication Critical patent/EP0233064A3/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Withdrawn legal-status Critical Current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
    • B21C25/00—Profiling tools for metal extruding
    • B21C25/02—Dies

Definitions

  • the present invention relates to extrusion apparatus, and in particular, though not exclusively, to a die arrangement for use with an extrusion apparatus of the "Conform" type.
  • the apparatus comprises a rotatable wheel having an endless groove extending around its periphery, a fixed structure covering the groove along part of its length to define a passageway therewith, a blocking member projecting into the groove to close off one end of the passageway and a die orifice leading from the closed off passageway adjacent with blocking member.
  • the wheel is rotated relative to the fixed structure and metal rod to be extruded is fed into the end of the passageway away from the blocking member and the metal is carried along in the groove by frictional drag in the direction towards the blocking member and is forced through the die orifice to produce the metal product.
  • Conform This process is known as the "Conform” process, and "Conform” extrusion machines are well known and are generally used for extruding aluminium or an alloy, billet or rod.
  • the die assembly is mounted within a stop member, or “shoe”, and the blocking member projects into the groove in the rotatable wheel. The material then flows through the die and takes on a cross-section in accordance with that of the die.
  • the present invention seeks to provide die struture for an extrusion machine of the "Conform" type, whereby die assemblies may be readily removed and hence changed.
  • an extrusion apparatus comprising: a body having a chamber for receiving a die; an inlet in the body for extrusion material; a passageway from the inlet to an opening into the chamber; a die in the chamber with an input side over the opening to the passageway; a sealing member arranged in the passageway so that extrusion material passing through the passageway to the die can press the sealing member against the die and passageway to prevent extrusion material spreading around the die into the die chamber.
  • the present invention also extends to an extrusion machine of the "Conform" type incorporating a die assembly as just described.
  • the sealing member is in the form of a sealing ring dimension to fit within the passageway.
  • the sealing member preferably is formed so that the surface area of sealing member contactable by the extrusion material is greater than that which contacts the die and passage.
  • the sealing ring is generally square in cross-section with two adjacent faces for contacting the extrusion material and one each of the other two faces for contacting the die and passageway, and a common corner of the die and passageway contacting faces being cut away, so that the area of each of these faces is less than area of the corresponding extrusion material contacting face.
  • an extrusion machine of the "Conform” type has an extrusion wheel 2 with a groove 4, rotatably in the direction of the arrow A seen in Figure 1.
  • the machine includes a frame member 6 which is provided with a blocking member 8 which protrudes into the groove 4, and a die assembly 10 carried within a chamber 7 in the body of frame 6.
  • the die assembly 10 consists of a die 12 mounted in a U-­shaped recess 14 formed in a die carrier 16.
  • the die carrier 16 is slideably mounted in slideways 18 machined in the frame member.
  • the die 12 has an extrusion orifice 20 and an enlarged recess 22 is formed behind the orifice. A further enlarged and tapered hole 24 is formed in the die carrier.
  • a wear ring 28 about the inlet 25 is a wear ring 28.
  • a sealing member in the form of a pressure ring 30 is located in a recess 32 in expansion chamber 26 adjacent one face 34 of the die 12.
  • a reaction plate 36 is secured to the rear of the frame of the machine.
  • the pressure ring 30 is generally square in cross-section and is chamferred on the corner adjacent the die face and recess 22 so that the face 38 of ring which is in contact with the die has a smaller area than its opposite face 40, and similarly the face 39 of the ring in contact with recess 32 is a smaller area than the opposite face 41.
  • the die carrier 16 has a recess 42 which receives a hook-shaped member 44 on the end of a piston rod 46 of a piston cylinder unit 48, piston cylinder unit 48 is mounted on a bracket 50 secured to one side of the frame 6.
  • a bracket 52 On the opposite side of the frame 6 is a bracket 52 which is provided with a slideway 54 aligned with the slideway 18 formed in the frame.
  • the machine operates in the well known "Conform" manner, whereby rod is fed into the groove 4 of the rotating wheel 2.
  • the friction from the surfaces of the groove drags the rod towards the blocking member 8 where the metal of the rod turns and flows through inlet 25 into expansion chamber 26.
  • the pressure of the flowing metal causes the chamber to be filled, and then metal to be extruded through the die orifice 20 and out through the hole 24 where it is cooled and coiled as required.
  • the pressure of the metal in the chamber 26 acts on the face 40 of the ring 30 causing the face 38 of the ring 30 to seal hard against the face 34 of the die and thereby prevent any leakage or extrusion of metal between the die and the ring, because the pressure exerted on the surface 38 is greater than the pressure on the face 40.
  • the pressure on the face 41 opposite the passageway contacting face 39 is greater than that exerted on that face so that the face 39 seals against the passageway.
  • piston cylinder unit 48 is actuated to cause the die carrier 16, with die 12, to move to the left as seen in Figure 3.
  • the first part of that movement shears the extrudate from the metal in the expansion chamber, after which it moves further to take up that position shown in chain lines in Figure 3 resting on the bracket 52.
  • the die may be lifted out of its U-shaped slot and replaced by a new die, or else a replacement die carrier, already assembled with a new die, may be exchanged with the old assembly.
  • the old die carrier is lifted off the bracket, being thus disconnected from the hook 44 of the piston rod 46, and a new die assembly placed on the bracket 52 in engagement with the slideway 54 and with its recess 42 engaged by the hook 44.
  • the piston cylinder unit is then actuated to draw the new die assembly into position within the machine whereby the die aligns axially with the chamber 26.
  • the metal feed and extrusion is then repeated as already described.
  • the die change arrangement may include die assembly supporting brackets on both sides of the machine so that a replacement die assembly may be replaced in readiness on one side while extrusion is still taking place in the extrusion axis.
  • the piston cylinder unit 48 would then be located further from the extrusion axis.
  • a further, similar, hook and recess connection would be provided between the second replacement assembly and the assembly which is in operation.
  • the die illustrated in the drawings shows a circular extrusion orifice, but may of course be of any desired shape and size. For instance it has been found possible, with the use of the expansion chamber 26, to extrude slabs of aluminium with a width which is many times greater than its thickness. For tubes and hollow sections, a bridge die is used.
  • the invention is applicable to a similar type of machine wherein metal particles, e.g. granules or powder, are fed into the groove 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
EP87301028A 1986-02-06 1987-02-05 Appareil d'extrusion Withdrawn EP0233064A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB868602985A GB8602985D0 (en) 1986-02-06 1986-02-06 Extrusion apparatus
GB8602985 1986-02-06

Publications (2)

Publication Number Publication Date
EP0233064A2 true EP0233064A2 (fr) 1987-08-19
EP0233064A3 EP0233064A3 (fr) 1989-07-12

Family

ID=10592639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87301028A Withdrawn EP0233064A3 (fr) 1986-02-06 1987-02-05 Appareil d'extrusion

Country Status (3)

Country Link
EP (1) EP0233064A3 (fr)
JP (1) JPS62259614A (fr)
GB (1) GB8602985D0 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0398747A1 (fr) * 1989-05-18 1990-11-22 Bwe Limited Appareil d'extrusion continue
EP0408259A1 (fr) * 1989-07-10 1991-01-16 Bwe Limited Appareil d'extrusion continue
EP0598953A1 (fr) * 1992-11-20 1994-06-01 Hitachi Cable, Ltd. Procédé et dispositif de fabrication d'un fil composite métallique à l'aide d'un appareil d'extrusion continue pourvu de deux roues
EP0677339A2 (fr) * 1994-04-12 1995-10-18 Yugen Kaisha Yano Engineering Matrice creuse et un appareil pour l'extrusion continue d'articles creux
EP4140609A1 (fr) * 2021-08-05 2023-03-01 KME Mansfeld GmbH Procédé d'extrusion, machine rotative d'extrusion et conducteur plat

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415696A (en) * 1943-10-23 1947-02-11 Bliss E W Co Extrusion apparatus
GB1370894A (en) * 1971-03-12 1974-10-16 Atomic Energy Authority Uk Extrusion
GB1520669A (en) * 1974-12-06 1978-08-09 Asea Ab Hydrostatic extrusion press
JPS5945020A (ja) * 1982-09-07 1984-03-13 Sumitomo Heavy Ind Ltd 回転ホイ−ル式金属押出し成形方法
EP0110653A2 (fr) * 1982-11-26 1984-06-13 Alform Alloys Limited Boudineuse pour métaux
EP0131426A2 (fr) * 1983-07-08 1985-01-16 BICC Public Limited Company Extrusion de métal
GB2143166A (en) * 1983-07-08 1985-02-06 Bicc Plc Extrusion of metal

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415696A (en) * 1943-10-23 1947-02-11 Bliss E W Co Extrusion apparatus
GB1370894A (en) * 1971-03-12 1974-10-16 Atomic Energy Authority Uk Extrusion
GB1520669A (en) * 1974-12-06 1978-08-09 Asea Ab Hydrostatic extrusion press
JPS5945020A (ja) * 1982-09-07 1984-03-13 Sumitomo Heavy Ind Ltd 回転ホイ−ル式金属押出し成形方法
EP0110653A2 (fr) * 1982-11-26 1984-06-13 Alform Alloys Limited Boudineuse pour métaux
EP0131426A2 (fr) * 1983-07-08 1985-01-16 BICC Public Limited Company Extrusion de métal
GB2143166A (en) * 1983-07-08 1985-02-06 Bicc Plc Extrusion of metal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 148 (M-308)[1585], 11st July 1984; & JP-A-59 45 020 (SUMITOMO JUKIKAI KOGYO K.K.) 13-03-1984 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0398747A1 (fr) * 1989-05-18 1990-11-22 Bwe Limited Appareil d'extrusion continue
WO1990014176A1 (fr) * 1989-05-18 1990-11-29 Bwe Limited Appareil de filage continu
US5152163A (en) * 1989-05-18 1992-10-06 Bwe Limited Continuous extrusion apparatus
EP0408259A1 (fr) * 1989-07-10 1991-01-16 Bwe Limited Appareil d'extrusion continue
WO1991000783A1 (fr) * 1989-07-10 1991-01-24 Bwe Limited Appareil d'extrusion en continu
US5157955A (en) * 1989-07-10 1992-10-27 Bwe Limited Continuous extrusion apparatus
EP0598953A1 (fr) * 1992-11-20 1994-06-01 Hitachi Cable, Ltd. Procédé et dispositif de fabrication d'un fil composite métallique à l'aide d'un appareil d'extrusion continue pourvu de deux roues
US5335527A (en) * 1992-11-20 1994-08-09 Hitachi Cable, Ltd. Method and apparatus for manufacturing a composite metal wire by using a two wheel type continuous extrusion apparatus
EP0677339A2 (fr) * 1994-04-12 1995-10-18 Yugen Kaisha Yano Engineering Matrice creuse et un appareil pour l'extrusion continue d'articles creux
EP0677339A3 (fr) * 1994-04-12 1996-01-17 Yano Eng Yk Matrice creuse et un appareil pour l'extrusion continue d'articles creux.
US5595084A (en) * 1994-04-12 1997-01-21 Yugen Kaisha Yano Engineering Hollow die and an apparatus for continuous extrusion forming of hollow articles
EP4140609A1 (fr) * 2021-08-05 2023-03-01 KME Mansfeld GmbH Procédé d'extrusion, machine rotative d'extrusion et conducteur plat

Also Published As

Publication number Publication date
GB8602985D0 (en) 1986-03-12
JPS62259614A (ja) 1987-11-12
EP0233064A3 (fr) 1989-07-12

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Inventor name: MADDOCK, BRIAN