US2181987A - Apparatus for extruding metal - Google Patents

Apparatus for extruding metal Download PDF

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Publication number
US2181987A
US2181987A US214796A US21479638A US2181987A US 2181987 A US2181987 A US 2181987A US 214796 A US214796 A US 214796A US 21479638 A US21479638 A US 21479638A US 2181987 A US2181987 A US 2181987A
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US
United States
Prior art keywords
metal
container
chamber
extrusion chamber
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.)
Expired - Lifetime
Application number
US214796A
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English (en)
Inventor
Beaver Charles James
Fairfield Thomas James
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.)
WT Glover and Co Ltd
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WT Glover and Co 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 WT Glover and Co Ltd filed Critical WT Glover and Co Ltd
Application granted granted Critical
Publication of US2181987A publication Critical patent/US2181987A/en
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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, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS 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 that type of apparatus for the extrusion of metal in which molten metal is fed into the outer part of a cylindrical container, is allowed to cool there and is then forced by a ram towards the inner end of the container, where it passes out in the plastic state by way'of a die or dies.
  • the ram is drawn back relative to the container or vice versa and the further charge of molten metal is fed in to the space between the ram and the'remaining part of the previous charge at the inner end of the container. It will be seen that the operation of this apparatus is intermittent and it has been recognised that this kind of operation has many disadvantages.
  • the present invention supplies an effective means of restraining the metal in the extrusion chamber from being forced back into a container when the pressure therein is reduced so that an effective multi-container press of the type indicated can be produced in which the containers can be filled in succession in the ordinary way, since there is no back pressure exerted on the metal in the container during filling and, in fact, no pressure is exerted there except that necessary for the working stroke.
  • the backward movement is restrained by providing a particular disposition of the passages between the containers and the common extrusion chamber, this disposition being such thatthe metal'ilows easily from each container into the extrusion chamber, but is effectively prevented from moving to any substantial extent in the opposite direction.
  • the invention is not-directly concerned wih the relative positions of the two or more containers, these may have their axes parallel to each other or inclined to each other or even in line with each other.
  • the controlling influence, in accordance with the invention is the relative disposition of the passages from the containers to the extrusion chamber. 80
  • the desired result can be obtained by placing a pair of passages so that they enter the extrusion chamber in close proximity with their end 'portions making an appropriate angle with each other.
  • Another arrangement which gives satisfactory results is one in which each passage enters a circular (or approximately circular) extrusion chamber tangentially and directed round the chamber in the same sense.
  • the passages need not enter the chamber in close proximity, in this case, but may be spaced uniformly round the chamber (e. g., for two passages the entries would be diametrically opposite).
  • the angle between the entering stream and the movement of adjacent metal round the chamber is a small one.
  • Figure 1 is a view partly in section of a twocontainer extrusion apparatus adapted for sheathing electric cables;
  • Figure 2 is a section on the line 11-11 in Figure 1 looking in the direction of the arrows;
  • Figure 3 is a diagrammatic representation of the metal streams entering the extrusion cha ber'of the apparatus shown in Figures land 2;
  • Figure'4. isj..a.further View of the lead'streams represented in Figure 3;
  • Figure 5 is a view in section of a portion of a modified form of apparatus embodying the features of the invention; and a Figure 6 is a. diagrammatic representation of the metal streams entering the extrusion champparatus shown in Figure 5, looking in the direction of the arrow VI.
  • the apparatus represented in Figure 1 is a double container press intended to be used for the application of a lead sheath l to an electric cable 2.
  • the press comprises two cylindrical containers 3 and 4 mounted on a single die-block 5, and the axes of the containers are inclined at a sharp angle to the vertical to form a press of the so-called V-type.
  • Molten metal passes into the container 3 from a reservoir 6 formed about the outer end of the container 3 and fed with molten metal by means of 1 a supply pipe 1.
  • a ram 8 is lower end of a piston 9 operating'within a hyelraulic cylinder I! mounted above and in line with container 3 by means of two tie-bolts ll.
  • the other container 4 is charged in a similar mounted on the container ,4 by means of tiebolts
  • the containers 3 and 4 are discharged alternately so that there is a continuous flow of plastic metal through the dies.
  • the pairs of passages I 1, l9 and I8, 28 converge at an angle which in the arrangement illustrated is about Figure 3 which indicates, in conguncticn with of metal, 21, 28, 29 and ,38-within those portions of the passages l1, I8, 20 respectively, which are adjacent the points oi entry into the extrusion chamber. It is conside ed for the purpose of illustration that metal 1 being extruded conditions are maintained during discharge of metal from the container 4 and re-charge of the a container 3.
  • Figures 5 and 6 indicate the relative disposition of the l extrusion chamber 38, and each is adapted to be discharged by moving a ram, such as the ram 39 in the extrusion chamber 36, inwards towards 45 the extrusion chamber 38.
  • the containers 36 and 48 located centrally within the extrusion cham- 50 her 38.
  • the containers 36 and 31 will be disthe stream of metal 32 extending ,from the charge of metal 33 in one container 31, and the other stream of metal 34 extending from the residue 35 of the charge in the other container 36. It is assumed for the purpose of the illustration that 60 the charge of metal 33 in one container 31 is being pressed as the stream of metal 32, in the As is shown in Figure 5 the two streams of the same sense irrespective of whichever stream is moving into the chamber.
  • the length of the end parts of the passages which converge upon each other or enter the extrusion chamber at an angle and which are substantially straight should be substantially greater than the width of the passage, preferably of the order of three times or more.
  • a passage 6 inches (15 cms.) long of circular cross-section and of a uniform diameter of inch (2.2 cms.) is of satisfactory proportions.
  • the controlling influence in the present case is entirely distinct from that of the tapering passage described in the specification of United States application Serial No. 1'12,- 944.
  • the two influences can be combined by the use of tapering passages appropriately inclined to each other, but a sufficient effect is obtained without such combination.
  • a multi-container press can be produced having the feature of the invention, such press comprising a number of containers grouped around a common extrusion chamber and each connected with it by a passage or passages arranged in the manner indicated.
  • the cable can be led into and through the centre of the group of containers by way of a passage leading to an inner die located in the centre of the extrusion chamber.
  • An apparatus for extruding plastic metal comprising two cylindrical containers, means cooperating with each container to discharge plastic metal therefrom into a common extrusion chamber, two passages extending from each container to the extrusion chamber, each passage from one container converging with and meeting a passage from the other container at an angle of not more than about 90.
  • An apparatus for extruding plastic metal comprising two cylindrical containers, means cooperating with each container to discharge plastic metal therefrom into a common circular extrusion chamber, two passages extending one from each container to the extrusion chamber, the two passages being tangentially joined with the extrusion chamber at diametrically opposite points and being directed in the same sense about the chamber.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Extrusion Of Metal (AREA)
US214796A 1937-06-23 1938-06-20 Apparatus for extruding metal Expired - Lifetime US2181987A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17478/37A GB495891A (en) 1937-06-23 1937-06-23 Improvements in apparatus for extruding metal

Publications (1)

Publication Number Publication Date
US2181987A true US2181987A (en) 1939-12-05

Family

ID=10095862

Family Applications (1)

Application Number Title Priority Date Filing Date
US214796A Expired - Lifetime US2181987A (en) 1937-06-23 1938-06-20 Apparatus for extruding metal

Country Status (5)

Country Link
US (1) US2181987A (fr)
CH (1) CH207756A (fr)
DE (1) DE940461C (fr)
FR (1) FR839520A (fr)
GB (1) GB495891A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696640A (en) * 1951-01-20 1954-12-14 Dynamit Nobel Ag Extrusion device
US2748933A (en) * 1955-01-27 1956-06-05 Alexander T Deutsch Automatic extrusion presses
US2794213A (en) * 1954-06-14 1957-06-04 Standard Machinery Company Extrusion head assembly
US2900708A (en) * 1956-02-16 1959-08-25 Marvalaud Inc Apparatus for producing alloy and bimetallic filaments
US2975893A (en) * 1955-04-21 1961-03-21 Herbert G Johnson Apparatus for consolidating particulate materials continuously without melting
US3240047A (en) * 1963-07-22 1966-03-15 Reynolds Metals Co Bridging die means and method
US3470939A (en) * 1965-11-08 1969-10-07 Texas Instruments Inc Continuous chill casting of cladding on a continuous support
JPS5257069A (en) * 1975-11-06 1977-05-11 Hitachi Cable Method and device to manufacture composite wire rods
US4277968A (en) * 1977-03-16 1981-07-14 United Kingdom Atomic Energy Authority Forming of materials by extrusion

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE917723C (de) * 1948-12-01 1954-09-09 Anton Auer Verfahren und Einrichtung zum kontinuierlichen Herstellen von endlosen, nahtlosen, biegsamen Rohren
DE1007281B (de) * 1953-10-29 1957-05-02 Schloemann Ag Strangpresse fuer Metalldraht
DE954684C (de) * 1953-11-17 1956-12-20 Schloemann Ag Kabelummantelungspresse mit zwei gleichachsig angeordneten Aufnehmern
DE1011844B (de) * 1954-09-02 1957-07-11 Hydraulik Gmbh Kabelummantelungspresse mit mehreren Aufnehmern
DE946535C (de) * 1955-02-24 1956-08-02 Schloemann Ag Arbeitsverfahren zum Nachladen beim kontinuierlichen Strangpressen auf einer Doppelblockpresse
DE1115685B (de) * 1958-07-14 1961-10-26 Siemens Ag Kontinuierlich arbeitende Kolben-Strangpresse, insbesondere Kabelummantelungspresse

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE440542C (de) * 1927-02-10 Fried Krupp Grusonwerk Akt Ges Presse zur Herstellung von stangen- oder rohrfoermigen Koerpern
US814731A (en) * 1905-01-27 1906-03-13 Norman A Robertson Apparatus for extruding metals.
US814732A (en) * 1905-02-11 1906-03-13 Norman A Robertson Apparatus for extruding metals.
US1177097A (en) * 1915-03-13 1916-03-28 Electric Hose Rubber Co Tube-making machine.
DE542691C (de) * 1928-10-23 1932-01-27 Felten & Guilleaume Carlswerk Strangpresse zur Herstellung von Rohren, insbesondere Bleikabelmaenteln
DE603475C (de) * 1931-06-27 1934-10-01 Siemens Schuckertwerke Akt Ges Strangpresse zum Herstellen von Metallrohren, insbesondere Bleikabelmaenteln

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696640A (en) * 1951-01-20 1954-12-14 Dynamit Nobel Ag Extrusion device
US2794213A (en) * 1954-06-14 1957-06-04 Standard Machinery Company Extrusion head assembly
US2748933A (en) * 1955-01-27 1956-06-05 Alexander T Deutsch Automatic extrusion presses
US2975893A (en) * 1955-04-21 1961-03-21 Herbert G Johnson Apparatus for consolidating particulate materials continuously without melting
US2900708A (en) * 1956-02-16 1959-08-25 Marvalaud Inc Apparatus for producing alloy and bimetallic filaments
US3240047A (en) * 1963-07-22 1966-03-15 Reynolds Metals Co Bridging die means and method
US3470939A (en) * 1965-11-08 1969-10-07 Texas Instruments Inc Continuous chill casting of cladding on a continuous support
JPS5257069A (en) * 1975-11-06 1977-05-11 Hitachi Cable Method and device to manufacture composite wire rods
US4277968A (en) * 1977-03-16 1981-07-14 United Kingdom Atomic Energy Authority Forming of materials by extrusion

Also Published As

Publication number Publication date
DE940461C (de) 1956-03-22
GB495891A (en) 1938-11-22
CH207756A (fr) 1939-11-30
FR839520A (fr) 1939-04-05

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