EP0908281B1 - Procédé et dispositif pour fabriquer des articles moulés - Google Patents

Procédé et dispositif pour fabriquer des articles moulés Download PDF

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Publication number
EP0908281B1
EP0908281B1 EP97117550A EP97117550A EP0908281B1 EP 0908281 B1 EP0908281 B1 EP 0908281B1 EP 97117550 A EP97117550 A EP 97117550A EP 97117550 A EP97117550 A EP 97117550A EP 0908281 B1 EP0908281 B1 EP 0908281B1
Authority
EP
European Patent Office
Prior art keywords
pressing
stroke
press
mixture
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 - Lifetime
Application number
EP97117550A
Other languages
German (de)
English (en)
Other versions
EP0908281A1 (fr
Inventor
Helmuth Huber
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.)
Werzalit AG and Co KG
Original Assignee
Werzalit AG and Co KG
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 Werzalit AG and Co KG filed Critical Werzalit AG and Co KG
Priority to DE59711690T priority Critical patent/DE59711690D1/de
Priority to ES97117550T priority patent/ES2222492T3/es
Priority to AT97117550T priority patent/ATE268252T1/de
Priority to EP97117550A priority patent/EP0908281B1/fr
Priority to US09/139,911 priority patent/US5972262A/en
Priority to JP10287782A priority patent/JPH11188749A/ja
Publication of EP0908281A1 publication Critical patent/EP0908281A1/fr
Application granted granted Critical
Publication of EP0908281B1 publication Critical patent/EP0908281B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/26—Extrusion presses; Dies therefor using press rams
    • B30B11/265—Extrusion presses; Dies therefor using press rams with precompression means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/086—Presses with means for extracting or introducing gases or liquids in the mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/28—Moulding or pressing characterised by using extrusion presses

Definitions

  • the invention relates to a method for producing Molded parts made from a non-flowable mixture of chip and / or Fiber materials and thermosetting binders, where the mixture in a press with all sides closed mold pressed and hardened and in which a part of those required for curing Amount of heat due to pressing into the mixture imported hot gases or vapors is applied, which in the mixture in the mold in a Direction is introduced, which is essentially is perpendicular to the pressing direction.
  • the technical problem underlying the invention is to continue the known method in the manner to develop that molded parts are manufactured endlessly can whose volume is fully cured.
  • This technical problem is solved according to the invention in that the mixture in the mold is pressed by at least two press strokes in such a way that the mold is closed on the first press stroke, the mixture being slightly compressed, and the mixture is pressed on the second press stroke, whereby the hot gases or vapors are introduced into the mixture after the first press stroke and the mixture is additionally heated by a heating device after the second press stroke.
  • This procedure allows one to mix from the mixture endlessly produce strand-shaped molding, which the amount of heat required during the pressing process sufficient and even in volume has been distributed distributed.
  • the end product is a strand-shaped molded part, which has a uniform hardness having.
  • the strand-shaped molding can after Harden the mixture into the required sizes become.
  • the Press device a tube 1 of greater length, i.e. the length of the tube is a multiple of the press stroke.
  • the plunger 2 is arranged to be longitudinally displaceable.
  • the filling opening 3 is provided laterally in the tube 1, which is at the end of the filling shaft 4, by which the mixture to be pressed into the mold inside the tube 1 is transported. Seen in the pressing direction are behind the filling opening in the pipe wall Feed channels 5 for the hot gases or vapors provided which via the manifold 6 with a (Not shown) reservoir are connected.
  • a heater 7 is provided in the tube wall, for example an electrical or a hot liquid operated heating.
  • the surface of the plunger is structured, for example with corrugation 8 Mistake.
  • Fig.1 Pressing device The mode of operation shown in Fig.1 Pressing device is as follows: In the one shown in Fig. 1 Position of the plunger can be the mixture to be pressed through the filling shaft 4 and the filling opening 3 in the Press mold 9 arrive. When the mold 9 is filled, the plunger 2 causes the first press stroke execute, causing the plunger to the end of the Arrow 10 is moved. This is the right end the mold has been closed. Now that will be minor compressed mixture through from the supply channels 5 introduced hot gases or vapors and through the heater 7 such a quantity of heat supplied, which for curing of the binder in the mixture is required.
  • the plunger 2 is caused to the second Execute press stroke, as shown by arrow 11.
  • the mixture will reach its final density pressed and hardens.
  • the Plunger 2 that is already in the pressing device Form part 12 pushed.
  • the corrugation 8 in the plunger 2 ensures that a corresponding corrugation also the end faces of the pressed molded parts, so that they connect more easily into a strand.
  • the inner contour of the tube 1 is corresponding to that manufactured molded part.
  • the tube 1 can for example have a circular cross section.
  • the cross section can also be square or polygonal his. It is also possible. that the cross section in Press area reduced, so that the second press stroke still there is an additional pressing pressure from the circumference.
  • FIG Press device are the parts that function in their function the parts of the pressing device shown in Fig. 1 are identical, provided with the same reference numerals. There is a difference between the pressing devices in that the tube 1 obliquely with respect to the horizontal is arranged. In this way, the filling of the Mixture in the mold 9 can be facilitated.
  • the plunger 2 is hollow and in it the tubular extension 13 arranged, the rear End can be connected to a feed line 14, so that after the first press stroke also hot gases or vapors from the inside be introduced into the slightly compressed mixture can.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (8)

  1. Procédé pour la fabrication de pièces moulées à partir d'un mélange non fluide de matériaux à copeaux et / ou à fibres et de liants thermodurcissables, selon lequel le mélange est entièrement moulé par compression dans une presse, à l'aide d'un moule fermé de tous les côtés, et est durci, et selon lequel une partie de l'énergie thermique nécessaire au durcissement est apportée par des gaz ou vapeurs chauds introduits dans le mélange pendant le moulage, les gaz et vapeurs chauds sont amenés dans le mélange se trouvant dans le moule dans un sens qui est sensiblement perpendiculaire au sens de compression, le mélange se trouvant dans l'élément d'outil de moulage (9) est pressé en au moins deux mouvements de compression, le premier mouvement de legère compression fait coulisser le piston de compression (2) afin d'obturer l'ouverture d'alimentation (3), le mélange est alors sous faible pression, lors du second mouvement de compression le mélange est moulé,
    caractérisé en ce qu'il est prévu, les gaz ou vapeurs chauds sont introduits dans le mélange après le premier mouvement de compression et que le mélange, après la seconde forte compression, est chauffé à l'aide d'élément de chauffage (7) supplémentaire.
  2. Dispositif pour la fabrication de pièces moulées à partir d'un mélange non fluide de matériaux à copeaux et / ou à fibres et de liants thermodurcissables, caractérisé en ce qu'il est prévu,
    a) le dispositif de compression composé d'un conduit (1) de plus grande longueur, dans lequel se trouve un élément d'outil de compression mobile (2) coulissant sur la longueur,
    b) sur l'élément d'outil de moulage (9) est prévu une ouverture radiale d'alimentation (3),
    c) après le canal d'alimentation (3), vu du sens de compression, dans la zone de mouvement de piston de compression (2), sont disposés, dans les parois de la presse, une multiplicité de canaux d'alimentations (5) qui débouchent dans une ou plusieurs conduites collectrices (6) reliées à un réservoir pour gaz ou vapeurs chauds, et qui amènent les gaz ou vapeurs chauds sont amenés dans un sens qui est sensiblement perpendiculaire au sens de compression,
    d) le piston de compression (2) peut être commandé de tel sorte qu'une première légère compression et ensuite une seconde forte compression sont exécutées, lors de la première compression le moule est obturé, les gaz ou vapeurs chauds sont ensuite introduits dans le mélange se trouvant dans le moule, suite à la seconde forte compression le mélange est chauffé à l'aide d'un système de chauffage (7) supplémentaire.
  3. Dispositif selon la revendication 2, caractérisé en ce que le dispositif de compression est positionné horizontalement.
  4. Dispositif selon la revendication 2, caractérisé en ce que le dispositif de compression est positionné obliquement.
  5. Dispositif selon la revendication 2, caractérisé en ce que le dispositif de compression est positionné verticalement.
  6. Dispositif selon une des revendications 2 à 5, caractérisé en ce qu'il est prévu,
    a) le piston de compression (2) a une cavité au milieu duquel est positionné un conduit de prolongation à section circulaire (13) qui débouche dans la chambre de compression,
    b) à l'extrémité arrière du conduit de prolongation à section circulaire (13) est prévu un canal d'alimentation (14) pour gaz ou vapeurs chauds,
    c) à l'extrémité avant du conduit de prolongation à section circulaire (13) est prévu, dans la zone de compression du mélange, des trous d'évacuation.
  7. Dispositif selon une des revendications 2 à 6, caractérisé en ce qu'il est prévu, une structure (8) sur la surface de piston de compression (2) situé face à la zone de compression.
  8. Dispositif selon les revendications 2, 5, 6 et 7, caractérisé en ce qu'il est prévu, un dispositif de remplissage composé d'un conduit de remplissage (4), parallèle à la presse, dont l'élément inférieur a une ouverture vers la zone de mouvement horizontale du tiroir de remplissage (16).
EP97117550A 1997-10-10 1997-10-10 Procédé et dispositif pour fabriquer des articles moulés Expired - Lifetime EP0908281B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE59711690T DE59711690D1 (de) 1997-10-10 1997-10-10 Verfahren und Vorrichtung zur Herstellung von Formteilen
ES97117550T ES2222492T3 (es) 1997-10-10 1997-10-10 Procedimiento y dispositivo para la fabricacion de piezas preformadas.
AT97117550T ATE268252T1 (de) 1997-10-10 1997-10-10 Verfahren und vorrichtung zur herstellung von formteilen
EP97117550A EP0908281B1 (fr) 1997-10-10 1997-10-10 Procédé et dispositif pour fabriquer des articles moulés
US09/139,911 US5972262A (en) 1997-10-10 1998-08-26 Method of and device for producing shaped parts
JP10287782A JPH11188749A (ja) 1997-10-10 1998-10-09 成形品を製造するための方法および装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97117550A EP0908281B1 (fr) 1997-10-10 1997-10-10 Procédé et dispositif pour fabriquer des articles moulés

Publications (2)

Publication Number Publication Date
EP0908281A1 EP0908281A1 (fr) 1999-04-14
EP0908281B1 true EP0908281B1 (fr) 2004-06-02

Family

ID=8227463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97117550A Expired - Lifetime EP0908281B1 (fr) 1997-10-10 1997-10-10 Procédé et dispositif pour fabriquer des articles moulés

Country Status (6)

Country Link
US (1) US5972262A (fr)
EP (1) EP0908281B1 (fr)
JP (1) JPH11188749A (fr)
AT (1) ATE268252T1 (fr)
DE (1) DE59711690D1 (fr)
ES (1) ES2222492T3 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19860836C1 (de) 1998-12-30 2000-05-18 Haller Formholz Verfahren und Vorrichtung zum kontinuierlichen Herstellen von Formkörpern
US6561787B2 (en) * 1999-09-29 2003-05-13 Kansas State University Research Foundation Apparatus for forming biodegradable and edible feed packaging materials
DE102004010461A1 (de) * 2004-03-01 2005-09-29 Oechsler Ag Verfahren zum Herstellen von Strangformen aus kunststoffgebundenen Fasserwerkstoffen, Vorrichtungen zum Ausüben der Verfahren und Werkstoffe zur Verwendung bei den Verfahren
EP1752267B1 (fr) 2005-08-10 2013-07-24 Anton Heggenstaller GmbH Presse d'extrusion
EP1752268A3 (fr) * 2005-08-10 2009-01-21 Karl Schedlbauer Méthode et appareil pour réaliser des cordons de densité egale et pour durcir des cordons en copeaux végétaux
ITMO20050348A1 (it) * 2005-12-23 2007-06-24 Imal Srl Apparato per la pressatura ad estrusione di materiale legnoso incoerente e metodo di pressatura relativo
DE202006017826U1 (de) 2006-11-21 2008-03-27 Anton Heggenstaller Gmbh Strangpressanlage zum Herstellen von Strangpressprodukten
US8052842B2 (en) * 2008-01-24 2011-11-08 Agriboard Industries Method for making a compressed structural fiberboard
US9683186B2 (en) * 2013-05-31 2017-06-20 C-Power Tech, LLC Carpet pellet machine
CN103659987B (zh) * 2013-12-04 2015-08-12 盛威机械贸易有限公司 双塔挤压装置及利用双塔挤压装置挤压木片的方法
US10414064B1 (en) 2019-03-14 2019-09-17 Agriboard International, Llc Efficient method and apparatus for producing compressed structural fiberboard
IT202100023171A1 (it) * 2021-09-08 2023-03-08 Imal Srl Attrezzatura e procedimento per la realizzazione di pannelli in materiale legnoso

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918977C (de) * 1952-01-19 1954-10-07 Buckau Wolf Maschf R Strangpresse fuer Torf, Braunkohle od. dgl.
DE2932406C2 (de) * 1979-08-09 1983-06-23 Anton 8892 Kühbach Heggenstaller Verfahren und Vorrichtungen zum Strangpressen eines Gemenges auf pflanzlichen Kleinteilen und Bindemitteln
CN1009443B (zh) * 1986-11-14 1990-09-05 库特·赫尔德·法布里肯特 制造复合木材制品板的方法和设备
DE3726921A1 (de) * 1987-02-10 1988-08-18 Menzolit Gmbh Halbzeug und verfahren und vorrichtung zum herstellen formhaltigen halbzeugs aus thermoplast
EP0638401B1 (fr) * 1988-04-26 1996-08-21 Anton Heggenstaller AG Procédé et dispositif pour extruder des profils, en particulier pour extruder des tubes à partir d'un mélange de copeaux végétaux et de liants
DE3844192A1 (de) * 1988-12-29 1990-07-05 Karl Schedlbauer Verfahren und vorrichtung zur steuerung der verdichtung und/oder zur erzeugung einer hoeher verdichteten randzone mit verbesserter oberflaeche beim strangpressen von kleinteilen, insbesondere pflanzlichen kleinteilen mit bindemitteln
ZA901076B (en) * 1989-02-14 1990-11-28 Csr Ltd Improved production process and apparatus
EP0443053B1 (fr) * 1990-02-20 1993-10-06 Werzalit Ag + Co. Procédé et dispositif pour fabriquer des pièces moulées
RU2041816C1 (ru) * 1992-06-10 1995-08-20 Михаил Васильевич Бирюков Способ изготовления профилированных прессованных изделий и устройство для его осуществления
US5413746A (en) * 1992-06-10 1995-05-09 Birjukov; Mikhail V. Method for molding shaped products and an apparatus for carrying out same

Also Published As

Publication number Publication date
ES2222492T3 (es) 2005-02-01
US5972262A (en) 1999-10-26
EP0908281A1 (fr) 1999-04-14
ATE268252T1 (de) 2004-06-15
JPH11188749A (ja) 1999-07-13
DE59711690D1 (de) 2004-07-08

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