Processing

Please wait...

PATENTSCOPE will be unavailable a few hours for maintenance reason on Saturday 31.10.2020 at 7:00 AM CET
Settings

Settings

Goto Application

1. WO1990014176 - CONTINUOUS EXTRUSION APPARATUS

Publication Number WO/1990/014176
Publication Date 29.11.1990
International Application No. PCT/GB1990/000778
International Filing Date 18.05.1990
IPC
B21C 23/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
23Extruding metal; Impact extrusion
B21C 25/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
25Profiling tools for metal extruding
CPC
B21C 23/005
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
23Extruding metal; Impact extrusion
005Continuous extrusion starting from solid state material
B21C 23/085
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
23Extruding metal; Impact extrusion
02Making uncoated products
04by direct extrusion
08Making wire, bars, tubes
085Making tubes
B21C 25/00
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
25Profiling tools for metal extruding
B21C 33/006
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
33Feeding extrusion presses with metal to be extruded ; ; Loading the dummy block
006Consecutive billets, e.g. billet profiles allowing air expulsion or bonding of billets
Applicants
  • BWE LIMITED [GB]/[GB] (AllExceptUS)
  • HAWKES, Daniel, John [GB]/[GB] (UsOnly)
  • JONES, Phillip, Andrew [GB]/[GB] (UsOnly)
  • ANDERSON, Douglas, Edward [GB]/[GB] (UsOnly)
Inventors
  • HAWKES, Daniel, John
  • JONES, Phillip, Andrew
  • ANDERSON, Douglas, Edward
Agents
  • LEWIS, David, Overington
Priority Data
8911466.418.05.1989GB
8915138.530.06.1989GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CONTINUOUS EXTRUSION APPARATUS
(FR) APPAREIL DE FILAGE CONTINU
Abstract
(EN)
Apparatus for the continuous extrusion of metals in which feed is introduced into two (or more) spaced apart circumferential grooves (4) in a rotating wheel (2) (or rotating wheels) to contact an arcuate shoe portion (8) and abutments extending into the grooves. The feed is constrained by the abutments to flow through frusto-conical exit apertures (10) in the shoe portion (8) to a chamber (6) and is extruded as relatively thin-walled, large cross-section, product. The exit apertures (10) have cone angles in the range 5°-45°. Mixer plates (14) are profiled to distribute flow evenly from the apertures (10) to around the die opening (30). An extrusion die body (18) for cylindrical extrusions is located and axially centered by set screws (122). Where an even number of grooves (4) are utilised, an extrusion mandrel (12) may be secured to the shoe portion (8) by a bolt (22) positioned centrally of the grooves. Lubricant or oxidation inhibiting fluids may be injected internally of the extruded product through a passage (36, 38) extending through the shoe portion (8) and the bolt (22). In another embodiment, the chamber (6) is also of divergent frusto-conical form having a cone angle corresponding to that of the apertures (10), thereby enabling the extrusion of even larger cross-section products. The frusto-conical form may be of elliptical cross-section to achieve a requisite divergence or to accord with the configuration of the die orifice. By providing spaced apart grooves (4) and apertures (10) diverging frusto-conically it is possible to extrude products of relatively large cross-section since the volume feed rate is enhanced and the distance travelled by the material from the grooves (4) to the die orifice (30) is reduced, thereby reducing friction losses and the likelihood of discontinuities in the extrudate arising.
(FR)
Un appareil pour le filage continu de métaux dans lequel de la charge est introduite dans deux ou plusieurs rainures circonférentielles écartées (4) et disposées dans une ou plusieurs roues rotatives (2) de manière à se mettre en contact avec un sabot oscillant en forme d'arc (8) et des butées s'étendant dans les rainures. Les butées retiennent la charge de sorte qu'elle s'écoule à travers des sorties en forme de tronc de cône (10) dans ledit sabot (8) vers une chambre (6). Ladite charge est ensuite extrudée sous forme de produits à parois relativement minces, doté d'une section transversale large. Les sorties (10) présentent des angles au sommet du cône de filage compris entre 5° et 45°. Des plaques de mélange (14) sont profilées de manière à répartir uniformément l'écoulement provenant des sorties (10) autour de l'ouverture de la filière (30). Un corps de filière (18) permettant le filage cylindrique est placé et centré axialement par des vis de blocage (122). Lorsqu'on incorpore un nombre égal de rainures (4), un mandrin de filage (12) est fixé audit sabot (8) à l'aide d'un boulon (22) positionné de façon centrale par rapport aux rainures. On peut injecter dans le produit filé des fluides lubrifiants ou inhibiteurs d'oxydation à travers un passage (36, 38) s'étendant à travers le sabot (8) et le boulon (22). Dans une autre réalisation, la chambre (6) est également en forme de tronc de cône divergent et présente un angle au sommet du cône correspondant à celui des sorties (10), ce qui permet le filage de produits à section transversale encore plus larges. La forme de tronc de cône peut présenter une section transversale elliptique de manière à réaliser une divergence requise ou à s'accorder avec la configuration de l'ouverture de la filière. La présence de rainures écartées (4) et de sorties (10) divergentes sous forme de tronc de cône rend possible le filage de produits dotés d'une section transversale relativement large. La vitesse de chargement volumétrique étant accrue; et la distance traversée par la matière entre les rainures (4) et l'ouverture (30) étant réduite, on diminue également les pertes par frottement et d'éventuelles discontinuités dans le produit filé.
Also published as
FI910259
NO19910170
Latest bibliographic data on file with the International Bureau