EP0080333B1 - Strangpressmaschine - Google Patents

Strangpressmaschine Download PDF

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Publication number
EP0080333B1
EP0080333B1 EP82306152A EP82306152A EP0080333B1 EP 0080333 B1 EP0080333 B1 EP 0080333B1 EP 82306152 A EP82306152 A EP 82306152A EP 82306152 A EP82306152 A EP 82306152A EP 0080333 B1 EP0080333 B1 EP 0080333B1
Authority
EP
European Patent Office
Prior art keywords
concrete
machine
forming element
conveyor
mold
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
Application number
EP82306152A
Other languages
English (en)
French (fr)
Other versions
EP0080333A3 (en
EP0080333A2 (de
Inventor
Christopher B. Bunn
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.)
Partek Oy AB
Original Assignee
Dy-Core Systems Ireland 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23260109&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0080333(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dy-Core Systems Ireland Ltd filed Critical Dy-Core Systems Ireland Ltd
Priority to AT82306152T priority Critical patent/ATE25349T1/de
Publication of EP0080333A2 publication Critical patent/EP0080333A2/de
Publication of EP0080333A3 publication Critical patent/EP0080333A3/en
Application granted granted Critical
Publication of EP0080333B1 publication Critical patent/EP0080333B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • B28B3/22—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded by screw or worm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/084—Producing shaped prefabricated articles from the material by vibrating or jolting the vibrating moulds or cores being moved horizontally for making strands of moulded articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • B28B3/22—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded by screw or worm
    • B28B3/224—Twin screw extruders, e.g. double shaft extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • B28B3/22—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded by screw or worm
    • B28B3/228—Slipform casting extruder, e.g. self-propelled extruder

Definitions

  • This invention relates to an extrusion machine for making elongated articles of concrete.
  • U.S. Patent 3,159,897 issued December 8th, 1964 to Ellis discloses a machine having a plurality of spiral conveyors or augers each with a flight fixed to a core shaft. Each auger has a trowelling mandrel secured to the downstream end and that mandrel rotates with the auger. A vibrator is mounted on the machine outside the molding area so that the entire machine is vibrated. In the Ellis machine the trowelling unit is fixed to an auger and rotates with it and the machine thus forms concrete slabs in which the cores must be of circular cross section.
  • Canadian Patent 910,030 issued September 19th, 1972 describes an extrusion machine having a forming element of any cross sectional shape.
  • a forming element of any cross section shape independent of and immediately following the downstream end of the spiral conveyor. That forming element is mounted so as not to be rotated by the conveyor. It may be nonrotated or it may be rotated at a speed different from the conveyor or indeed at a speed the same as the conveyor but the feature of the patent is that the spiral conveyor and the forming element can be driven independently.
  • Canadian Patent 1,031,934 issued May 30th, 1978 shows a machine for extruding elongate articles of concrete in which a fixed transverse plate is positioned across the upstream end of the mold and in which the conventional screw conveyor is used to force the concrete towards the mold.
  • the invention of this patent is directed to formation of concrete bodies having cores of different sizes. In this patent the moulding elements do not rotate.
  • Canadian Patent 1,100,297 issued May 5th, 1981 shows an extrusion machine of a generally similar type but including a support tube so that reinforcing members may be introduced into the formed article.
  • the patent generally discloses a machine having a molding section with a forming element in it and in which concrete is forced through the mold by a screw conveyor.
  • the above machines generally move along a track on wheels and extrude the formed concrete body on the upper surface of the track. This is possible because the concrete is a relatively stiff mix and, of course, modern technology permits rapid setting of concrete.
  • the present invention seeks to provide a machine in which an optimum cross section of a hollow concrete body can be produced, that is the minimum amount of concrete can be used to produce a body of the required strength.
  • the forming element should be free of any substantial ramp at its bottom upstream edge and sides. However, a ramp is permissible provided it is short. Its length must not exceed 25% of the length of the forming element.
  • the forming element lower edge is below the lower edge of the conveyor provided that not more than 10% of the total height of the forming element is below the lower edge of the conveyor.
  • the longitudinal center line A of the elements is higher than the center line B of the conveyor, as particularly illustrated in Figure 4, and a ramp 34 as shown in Figures 2 and 4, extends upwardly from the downstream end of the conveyors 20 and 22 that is adjacent the end of the conveyor, within the mold 26.
  • Each conveyors is made of a flight 50 secured to or formed integrally with a hollow shaft 52.
  • the hollow shaft 52 has a straight section extending part of the length of the conveyor but the section increases outwardly towards the downstream end. However, it may be of uniform cross section.
  • Conveyor 10 is rotated in its bearing 48 by a chain and sprocket arrangement 54 driven by electric motor 18 mounted on frame 42.
  • the second conveyor 22 may be provided with a separate electric motor but is desirably driven by the same electric motor 18 through gears 56 and a chain and sprocket arrangement 58 ensuring that the two conveyors 20 and 22 rotate in opposite directions.
  • the width of the body 12 to be produced may be controlled by side plates 74 mounted on opposite sides of the mold 26.
  • the side plates 74 are mounted for adjustment on frame members 38 by bolts 76.
  • the depth of the mold 26 can be controlled by an upper plate 78 positioned on top of the moulding section and adjustable on bolts 80 in conventional manner.
  • the particular virtue of the present invention is that articles having relatively large cores and, for example, cores that are of substantial depth relative to the depth of the article can be produced. This is made possible by having the center line B of the screw lower than the center line A of the mold, by the provision of the ramp 34 on the top of the first forming element 28 and by the absence of any substantial ramp on the underside of the forming element. It is also desirable that there not be a ramp on the lower corners or sides of the forming element below the longitudinal axis of the screw as shown in Figure 4. However, a small ramp is permitted here provided that it is not of great length or depth and does not exceed 25% of the forming element length.
  • the present invention thus permits the economical production of concrete bodies having the same strength as bodies produced on prior art machines but using less concrete.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Screw Conveyors (AREA)
  • Luminescent Compositions (AREA)
  • Electroluminescent Light Sources (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Reciprocating Pumps (AREA)
  • Rod-Shaped Construction Members (AREA)

Claims (9)

1. Strangpreßmaschine (10) zur Herstellung länglicher Artikel aus Beton durch Pressen des Betons durch eine Form (36), wobei der Artikel einen ziemlich großen Kern hat und die Maschine (10) als Reaktion, während der Beton gegen den geformten Beton gepreßt wird, vorwärts bewegt wird, umfassend einen drehbaren Schneckenförderer (20, 22), der sich innerhalb und in Längsrichtung der Form (26) zur Bewegung des Betons durch die Form (26) erstreckt, und ein nichtdrehbares Formgebungselement (28, 30, 32) zur Bildung eines inneren Hohlraums, welches Formgebungselement in der Form (26) unmittelbar nach dem flußabwärts gelegenen Ende des Förderers (20, 22) angeordnet ist, wobei sein unterer Rand so positioniert ist, daß sich nicht mehr als 10 % der Höhe des Formgebungselements (28, 30, 32) unter dem unteren Rand des Förderers (20, 22) befinden und seine Längsmittellinie (A) höher liegt als die Mittellinie (B) des Förderers, und wobei das Formgebungselement mit einer Rampe (34) ausgebildet ist, die sich vom flußabwärts gelegenen Endes des Förderers nach oben erstreckt, wobei der untere Rand und die unteren Seiten des Formgebungselements frei von jeder wesentlichen Rampe sind und der Förderer den Beton über das Formgebungselement zur Formgebung des Betonartikels preßt.
2. Maschine nach Anspruch 1, umfassend einen Vibrator (66) innerhalb des Formgebungselements (28).
3. Maschine nach Anspruch 2, umfassend eine Vibratorplatte (72) oben auf der Form (26), über dem Formgebungselement.
4. Maschine nach Anspruch 1, worin das Formgebungselement an seinem unteren, flußaufwärts gelegenen Rand frei von jeder wesentlichen Rampe ist.
5. Maschine nach Anspruch 4, worin jede, am unteren, flußaufwärts gelegenen Rand des Formgebungselements vorhandene Rampe kurz ist und 25 % der Länge des Formgebungselements nicht Überschreitet.
6. Maschine nach Anspruch 2, worin eine Mehrzahl von Formgebungselementen (28, 30, 32) vorgesehen ist, wobei das erste Element (28) den Vibrator (66) aufweist, die folgenden Elemente (30, 32) ohne Vibration sind und zwischen jedem Formgebungselement Vibrationsdämpfungsmittel (64) vorgesehen sind.
7. Maschine nach Anspruch 1, worin das Formgebungselement entfernbar ist.
8. Maschine nach Anspruch 6, worin das Vibrationsdämpfungsmittel (64) eine Gummischeibe ist, die zwischen benachbarten Formgebungselementen vorgesehen und an diesen befestigt ist.
9. Maschine nach Anspruch 1, umfassend eine Mehrzahl von Förderschnecken (20, 22) und eine Mehrzahl von Formgebungselementen (28, 30, 32), sodaß die Maschine breite, relativ flache Artikel formen kann.
EP82306152A 1981-11-20 1982-11-18 Strangpressmaschine Expired EP0080333B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82306152T ATE25349T1 (de) 1981-11-20 1982-11-18 Strangpressmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US32364881A 1981-11-20 1981-11-20
US323648 1981-11-20

Publications (3)

Publication Number Publication Date
EP0080333A2 EP0080333A2 (de) 1983-06-01
EP0080333A3 EP0080333A3 (en) 1984-10-17
EP0080333B1 true EP0080333B1 (de) 1987-02-04

Family

ID=23260109

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82306152A Expired EP0080333B1 (de) 1981-11-20 1982-11-18 Strangpressmaschine

Country Status (14)

Country Link
EP (1) EP0080333B1 (de)
JP (1) JPS58131020A (de)
KR (1) KR860001642B1 (de)
AT (1) ATE25349T1 (de)
AU (1) AU539819B2 (de)
CA (1) CA1193834A (de)
DE (1) DE3275360D1 (de)
DK (1) DK158073C (de)
EG (1) EG15859A (de)
FI (1) FI71088C (de)
IE (1) IE53675B1 (de)
IN (1) IN157614B (de)
MX (1) MX157583A (de)
NO (1) NO157289C (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85102514B (zh) * 1985-04-08 1986-11-05 核工业部建筑机械开发公司 预应力混凝土空心板单板成型挤压机
US5123831A (en) * 1991-05-16 1992-06-23 Esa Enqvist Concrete extrusion machine
CA2204978A1 (en) * 1997-05-09 1998-11-09 Ultra Span Technologies Inc. Low noise hollow core slab extruder
EP0968799A1 (de) * 1998-07-01 2000-01-05 Euromac S.r.l. Gleitvorrichtung zum Strangpressen von Stahlbetonfertigteilen
FI19991792A (fi) * 1999-08-23 2001-02-24 Valkeakoski Extec Oy Ltd Menetelmä ja sovitelma betonituotteen valmistamiseksi ja betonituotesarja
FI20021092A (fi) * 2002-06-07 2003-12-08 Consolis Technology Oy Ab Menetelmä ja laite betonituotteiden valamiseksi
FI121943B (fi) 2007-11-21 2011-06-15 Outotec Oyj Jakelulaite
CN103171030B (zh) * 2013-03-28 2015-09-09 南京益生宜居建筑材料科技有限公司 混凝土空心板连续挤出机
CN103158190B (zh) * 2013-03-28 2015-09-09 南京益生宜居建筑材料科技有限公司 混凝土空心板挤出机的挤出仓内使用的模芯
CN103171031B (zh) * 2013-03-28 2015-06-24 南京益生宜居建筑材料科技有限公司 混凝土空心板连续生产方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3159897A (en) * 1961-07-10 1964-12-08 Fredrick G Ellis Machine for extruding hollow cored concrete sections
CA910030A (en) * 1969-12-04 1972-09-19 Putti George Extrusion machine for making articles of cement-like material
US3926541A (en) * 1970-06-29 1975-12-16 Frederick M Hewitt Extruder with interacting auger and care means
GB1454050A (en) * 1974-02-11 1976-10-27 Spiroll Corp Ltd Pile extruder
US3904341A (en) * 1975-08-29 1975-09-09 Dyform Concrete Prestressed Lt Machine for extruding cement-like material into articles
CA1100297A (en) * 1977-10-28 1981-05-05 Norman W. Bunn Reinforcing member support in concrete extruders
JPS583801B2 (ja) * 1979-09-12 1983-01-22 ダイフオ−ム・エンジニアリング・リミテツド コンクリ−ト押出成形機

Also Published As

Publication number Publication date
DK158073B (da) 1990-03-26
JPS6315122B2 (de) 1988-04-04
MX157583A (es) 1988-12-02
DK158073C (da) 1990-08-20
IE822664L (en) 1983-05-20
EP0080333A3 (en) 1984-10-17
AU539819B2 (en) 1984-10-18
EG15859A (en) 1986-12-30
EP0080333A2 (de) 1983-06-01
DK518082A (da) 1983-05-21
KR860001642B1 (ko) 1986-10-15
JPS58131020A (ja) 1983-08-04
CA1193834A (en) 1985-09-24
FI821813A0 (fi) 1982-05-21
KR840002290A (ko) 1984-06-25
NO157289B (no) 1987-11-16
NO823868L (no) 1983-05-24
FI71088B (fi) 1986-08-14
DE3275360D1 (en) 1987-03-12
NO157289C (no) 1988-02-24
IN157614B (de) 1986-05-03
IE53675B1 (en) 1989-01-04
FI821813A (fi) 1983-05-21
ATE25349T1 (de) 1987-02-15
AU9071182A (en) 1983-05-26
FI71088C (fi) 1990-02-13

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