EP0177628B1 - Procédé et dispositif pour la fabrication d'articles profilés par pressage - Google Patents

Procédé et dispositif pour la fabrication d'articles profilés par pressage Download PDF

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Publication number
EP0177628B1
EP0177628B1 EP84112135A EP84112135A EP0177628B1 EP 0177628 B1 EP0177628 B1 EP 0177628B1 EP 84112135 A EP84112135 A EP 84112135A EP 84112135 A EP84112135 A EP 84112135A EP 0177628 B1 EP0177628 B1 EP 0177628B1
Authority
EP
European Patent Office
Prior art keywords
pressing tool
pressed
mixture
pressing
press
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
EP84112135A
Other languages
German (de)
English (en)
Other versions
EP0177628A1 (fr
Inventor
Edmund Munk
Original Assignee
Werzalit - Werke Jf Werz 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 - Werke Jf Werz KG filed Critical Werzalit - Werke Jf Werz KG
Priority to AT84112135T priority Critical patent/ATE41623T1/de
Priority to DE8484112135T priority patent/DE3477357D1/de
Priority to EP84112135A priority patent/EP0177628B1/fr
Priority to CA000473886A priority patent/CA1256259A/fr
Publication of EP0177628A1 publication Critical patent/EP0177628A1/fr
Priority to US07/102,345 priority patent/US4867670A/en
Application granted granted Critical
Publication of EP0177628B1 publication Critical patent/EP0177628B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B27N5/00—Manufacture of non-flat articles

Definitions

  • the invention relates to a process for the production of pressed profile bodies from a non-rising mixture of fiber materials mixed with a thermosetting binder, in which the mixture is pre-pressed and then cured to its final shape in a hot press such that a mixture filled with the undensified mixture first lower part of the pressing tool is inserted into a press and that the mixture is pressed into the upper part of the pressing tool when the press is closed while simultaneously pressing and that a second lower part of the pressing tool is then inserted instead of the first lower part of the pressing tool.
  • the non-rising mixture often consists of lignocellulosic fibrous materials, such as shredded and dried wood chips, bagasse fibers and the like, which are mixed with a thermosetting synthetic resin, such as melamine, urea formaldehyde or phenol formaldehyde resin.
  • a thermosetting synthetic resin such as melamine, urea formaldehyde or phenol formaldehyde resin.
  • fibers of other materials such as glass fibers, rock wool, alone or several of these, to which appropriate, preferably organic binders have been added can also be used in a mixed state.
  • the known method and the corresponding device for carrying out the method is provided for the production of relatively small profile bodies, such as round blanks from a diameter of five centimeters, or grid-like networks consisting of rings and connecting webs with small wall thicknesses, such as decorative grids or ceiling grid elements.
  • the known method has also proven itself in the production of these products if their components have a uniform thickness.
  • the known method leads to products which are no longer of sufficient quality if components of the product to be produced, for example a ceiling grid element, are stepped webs, i.e. they have different depths. If these products are produced by the known method, then they can have a burr on the side on which the webs have different depths and which is also the visible side of the product, which burrs can be removed with effort or not at all.
  • the invention is therefore based on the object of further developing the known method in such a way that products which have webs of different depths can also be pressed in such a way that they have no burr on the visible side.
  • this object is achieved in that when the press is closed again, the pre-pressed mixture is pressed into the second lower part of the pressing tool, hot pressed there and cured in the process.
  • the second solution to the problem is that when the press is closed again, the pre-pressed mixture is pressed into the second lower part of the pressing tool, then the second lower part of the pressing tool is moved under another upper part of the pressing tool and the pre-pressed mixture is hot-pressed and cured in the process by lowering this upper part of the pressing tool.
  • a device has proven to be advantageous in which the press is equipped with a liftable, lowerable and heatable pressing tool upper part and a heated and a non-heated pressing tool lower part, the non-heated pressing tool lower part being filled with the mixture with cavities and a frame surrounding it, provided with a reversible lifting and lowering device, which can be lowered during pressing to such an extent that central parts of the lower part of the pressing tool, which form the bottoms of the cavities, can press the pre-pressed mixture into the depressions of the upper part of the pressing tool, and also into the heatable pressing tool lower part of the three-dimensional shape of the profile body are recessed and the pressing tool upper part likewise has a frame provided with a reversible lifting and lowering device and a means and via the pressing tool The part is designed to be movable.
  • a device has proven to be advantageous which has a number of features which correspond to the device described above and in which recesses corresponding to the three-dimensional shape of the profile body are also embedded in the heatable press tool lower part, and the press tool upper part also has one , with a reversible lifting and lowering device provided frame and a middle part, and in addition to this pressing tool upper part a further liftable and lowerable and heated pressing tool upper part is arranged, which is provided on the surface facing the heated pressing tool lower part with the depressions corresponding to the depressions, and each the lower die parts can be moved under each of the upper die parts.
  • the first press tool lower part 1 can be seen on the left side, which in a known manner consists of the fixed bottom 2 of the press tool lower part 1 and the middle part 4 and outer part 5 which can be displaced vertically relative to these up to stops 3. Between the middle part 4 and the outer part 5 there is thus a filling space 6 for receiving the Mixture from which the profile body is to be pressed with stepped, differently deep webs.
  • a single tool is drawn in FIG. 1. If, for example, ceiling grid elements are to be pressed with the device shown, then the device is designed as a multi-tool which corresponds to a multiplicity of identical individual tools which are connected to one another in one piece.
  • the first lower press tool part 1 can again be seen, this time in the press position, which has been moved under the upper press tool part 7.
  • the horizontally displaceable upper die part 7 likewise consists in a manner known per se from the middle part 8, which can be raised and lowered, and the outer part 10, which can be displaced relative to the middle part 8 up to the stops 9.
  • the right-hand device in FIG. 1 shows the upper pressing tool part 7, which is moved over the second lower pressing tool part 11 and is in the pressing position.
  • the method according to claim 1 is carried out with the device shown in FIG. 1 in the following way:
  • the mixture to be pressed into the profile body is filled into the filling space 6.
  • the first press tool lower part 1 is moved under the press tool upper part 7.
  • the mixture located in the first lower pressing tool part 6 is compressed and pressed into the cavity 12 of the upper pressing tool part 7. This point in time is illustrated by the middle part of FIG. 1.
  • the pressing tool upper part 7 is moved upwards and to the right, as a result of which it passes over the second pressing tool lower part 11.
  • the first pressing tool lower part 6 can simultaneously be returned to its starting position, as shown in the left part of FIG. 1.
  • the pressing tool upper part 7 is lowered onto the second pressing tool lower part 11, the pre-pressed profile body being pressed out of the cavity 12 into the cavity 13 of the second pressing tool lower part 11, being pressed at the same time and being cured by the application of heat.
  • the pressing tool upper part 7 and the second pressing tool lower part 11 or only the second pressing tool lower part 11 can be provided with a heater.
  • the finished profile body is then ejected by ejectors, not shown.
  • FIG. 2 shows the device with which the method according to claim 2 can be carried out. It consists of the first pressing tool lower part 14 and the first pressing tool upper part 15, the second pressing tool lower part 16 and the second pressing tool upper part 17.
  • the pressing tool upper parts 15, 17 and pressing tool lower parts 14, 16 are constructed in a manner known per se, as already explained in connection with FIG. 1 has been.
  • the pressing tools shown in FIG. 2 differ from those shown in FIG. 1 in that they are designed as tools for a complete profile body consisting of a plurality of webs.
  • the method according to claim 2 is now carried out in the following manner:
  • the first pressing tool lower part 14 is filled with the molding compound in a position shifted to the left in relation to the illustration in FIG. 2.
  • the first press tool lower part 14 is moved under the first press tool upper part 15. This is the position shown in FIG. 2.
  • the first pressing tool upper part 15 is then lowered onto the first pressing tool lower part 14, the mixture located in the first pressing tool lower part 14 being pre-pressed and transferred into the cavities 18 in the first pressing tool upper part 15.
  • the second press tool lower part 16 is then moved under the first press tool upper part 15.
  • the first pressing tool part 15 is lowered again, the already compressed mixture is transferred from the cavities 18 in the first pressing tool part 15 into the cavities 19 in the second pressing tool lower part 16.
  • the second pressing tool lower part 16 is moved under the second pressing tool upper part 17. This is the position shown in FIG. 2, right side.
  • the pre-pressed profile body located in the cavities 19 is finished pressed and cured by the application of heat.
  • the heat is generated by switching on the heaters 20.
  • the finished profile body is then ejected from the cavities 19 by ejectors, not shown.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Forging (AREA)
  • Powder Metallurgy (AREA)

Claims (4)

1. Procédé de fabrication de corps profilés par compression à partir d'un mélange non expansible de matières fibreuses mélangées à un liant thermodurcissable, dans lequel le mélange est pressé sous la forme d'une ébauche et puis durci sous sa forme définitive dans une presse à chaud, suivant la méthode selon laquelle une première partie inférieure d'outil de compression (1 ) remplie par le mélange non comprimé est introduite dans une presse, et, lorsque l'on ferme la presse, le mélange est comprimé dans la partie supérieure d'outil de compression (7) de celle-ci, en étant simultanément pressé sous la forme d'une ébauche, une seconde partie inférieure d'outil de compression (11 ) étant ensuite introduite à la place de la première partie inférieure d'outil de compression, caractérisé en ce que, lorsque l'on ferme à nouveau la presse, le mélange pressé sous la forme d'une ébauche est comprimé dans la seconde partie inférieure d'outil de compression (11 ) où il subit une compression à chaud tout en étant durci.
2. Procédé de fabrication de corps profilés par compression à partir d'un mélange non expansible de matières fibreuses mélangées à un liant thermodurcissable, dans lequel le mélange est pressé sous la forme d'une ébauche et puis durci sous sa forme définitive dans une presse à chaud, suivant la méthode selon laquelle une première partie inférieure d'outil de compression (14) remplie par le mélange non comprimé est introduite dans une presse, et, lorsque l'on ferme la presse, le mélange est comprimé dans la partie supérieure d'outil de compression (15) de celle-ci, en étant simultanément pressé sous la forme d'une ébauche, une seconde partie inférieure d'outil de compression (16) étant ensuite introduite à la place de la première partie inférieure d'outil de compression (14), caractérisé en ce que, lorsque l'on ferme à nouveau la presse, le mélange pressé sous la forme d'une ébauche est comprimé dans la seconde partie inférieure d'outil de compression (16), après quoi cette dernière est déplacée sous une seconde partie supérieure d'outil de compression (17) et, grâce à un abaissement de celle-ci, le mélange pressé sous la forme d'une ébauche subit une compression à chaud tout en étant durci.
3. Dispositif de mise en œuvre du procédé selon la revendication 1, dans lequel la presse est équipée d'une partie supérieure d'outil de compression (7) apte à être levée et abaissée et également chauffée, ainsi que d'une partie inférieure d'outil de compression (11 ) apte à être chauffée et d'une partie inférieure d'outil de compression (1 ) inapte à être chauffée, cette dernière comportant des espaces creux destinés à être remplis par le mélange, et un bâti (5) entourant ceux-ci et pourvu d'un dispositif de levage et d'abaissement réversible, lequel bâti peut, en cours de compression, être abaissé suffisamment pour permettre à des parties centrales (4) de la partie inférieure d'outil de compression (1 ) qui forment les fonds des espaces creux, de comprimer le mélange pressé sous la forme d'une ébauche dans les cavités de la partie supérieure d'outil de compression, caractérisé en ce que des cavités (13) correspondant à la forme en trois dimensions du corps profilé sont encastrées dans la partie inférieure d'outil de compression (11 ) apte à être chauffée, tandis que la partie supérieure d'outil de compression (7) possède également un bâti (10) pourvu d'un dispositif de levage et d'abaissement réversible, et une partie centrale (8), et est montée déplaçable au-dessus de la partie inférieure d'outil de compression (11 ).
4. Dispositif de mise en oeuvre du procédé selon la revendication 2, dans lequel la presse est équipée d'une partie supérieure d'outil de compression (15) apte à être levée et abaissée, ainsi que d'une partie inférieure d'outil de compression (16) apte à être chauffée et d'une partie inférieure d'outil de compression (14) inapte à être chauffée, cette dernière comportant des espaces creux destinés à être remplis par le mélange, et un bâti entourant ceux-ci et pourvu d'un dispositif de levage et d'abaissement réversible, lequel bâti peut en cours de compression, être abaissé suffisamment pour permettre à des parties centrales de la partie inférieure d'outil de compression (14) qui forment les fonds des espaces creux, de comprimer le mélange pressé sous la forme d'une ébauche dans les cavités de la partie supérieure d'outil de compression, caractérisé en ce que des cavités (19) correspondant à la forme en trois dimensions du corps profilé sont encastrées dans la partie inférieure d'outil de compression (16) apte à être chauffée, et en ce que la partie supérieure d'outil de compression (15) possède également un bâti pourvu d'un dispositif de levage et d'abaissement réversible, et une partie centrale, tandis qu'à côté de cette partie supérieure d'outil de compression (15) est disposée une seconde partie supérieure d'outil de compression (17) apte à être levée et abaissée et également chauffée, qui présente sur sa surface contiguë à la partie inférieure d'outil de compression (16) apte à être chauffée des parties en relief semblables à des poinçons, correspondant aux cavités (19), chacune des parties inférieures d'outil de compression (14, 16) pouvant être déplacée sous chacune des parties supérieures d'outil de compression.
EP84112135A 1984-10-10 1984-10-10 Procédé et dispositif pour la fabrication d'articles profilés par pressage Expired EP0177628B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT84112135T ATE41623T1 (de) 1984-10-10 1984-10-10 Verfahren und vorrichtung zur herstellung von gepressten profilkoerpern.
DE8484112135T DE3477357D1 (en) 1984-10-10 1984-10-10 Method and apparatus for the production of pressed profiled articles
EP84112135A EP0177628B1 (fr) 1984-10-10 1984-10-10 Procédé et dispositif pour la fabrication d'articles profilés par pressage
CA000473886A CA1256259A (fr) 1984-10-10 1985-02-08 Methode et dispositif de fabrication de profiles par moulage
US07/102,345 US4867670A (en) 1984-10-10 1987-09-29 Apparatus for producing press shaped bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84112135A EP0177628B1 (fr) 1984-10-10 1984-10-10 Procédé et dispositif pour la fabrication d'articles profilés par pressage

Publications (2)

Publication Number Publication Date
EP0177628A1 EP0177628A1 (fr) 1986-04-16
EP0177628B1 true EP0177628B1 (fr) 1989-03-22

Family

ID=8192207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112135A Expired EP0177628B1 (fr) 1984-10-10 1984-10-10 Procédé et dispositif pour la fabrication d'articles profilés par pressage

Country Status (5)

Country Link
US (1) US4867670A (fr)
EP (1) EP0177628B1 (fr)
AT (1) ATE41623T1 (fr)
CA (1) CA1256259A (fr)
DE (1) DE3477357D1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5225135A (en) * 1991-08-30 1993-07-06 General Motors Corporation Balanced pressure compression molding method
JP3048529B2 (ja) * 1995-11-21 2000-06-05 太平洋セメント株式会社 成形圧縮外皮構造繊維パネル
SE509775C2 (sv) * 1997-07-09 1999-03-08 Sonoform Ab Metod för att åstadkomma en formpressad produkt samt vid metodens utövning utnyttjat formverktyg
US6849141B2 (en) * 1998-09-15 2005-02-01 Batesville Services, Inc. Casket lid and method of making same
US6243931B1 (en) 1998-09-15 2001-06-12 Batesville Services, Inc. Casket lid and method and making same
US6561787B2 (en) * 1999-09-29 2003-05-13 Kansas State University Research Foundation Apparatus for forming biodegradable and edible feed packaging materials
ITMO20050291A1 (it) * 2005-11-04 2007-05-05 Imal Srl Macchina per la formatura di manufatti in materiale incoerente, particolarmente per la realizazione di traversine per palette di caricamento, e metodo relativo
EP3072654A1 (fr) 2015-03-26 2016-09-28 Topalit GmbH Procédé de fabrication d'une pièce de formage plane

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US630397A (en) * 1894-02-19 1899-08-08 Alexander Niedringhaus Brick-making.
DE1213110B (de) * 1963-12-21 1966-03-24 Arnold Adler Dipl Ing Verfahren, Anordnung und Presse zum Pressen von Spanformkoerpern groesserer Ausdehnung
DE1210550B (de) * 1964-01-18 1966-02-10 Werz Furnier Sperrholz Verfahren und Vorrichtung zur Herstellung von in mehreren Dimensionen verformten Teilen aus zerkleinerten organischen Faserstoffen, z. B. Holzspaenen, und einem Bindemittel
US3354248A (en) * 1965-06-08 1967-11-21 Furnierund Sperrholzwerk J F W Process and machine for producing multidimensionally molded articles
GB1242259A (en) * 1968-12-13 1971-08-11 Birmingham Small Arms Co Ltd Improvements in or relating to compacting machines
US3764244A (en) * 1972-05-30 1973-10-09 D Hurley Apparatus for compacting granular material
US3997643A (en) * 1973-02-28 1976-12-14 Furnier-Und Sperrholzwerk J. F. Werz Jr. Kg Werzalit - Pressholzwerk Method of making shaped articles
US3975127A (en) * 1973-02-28 1976-08-17 Furnier-Und Sperrholzwerk J. F. Werz, Jr. Kg Werzalit-Pressholzwerk Apparatus for making shaped articles
US4038242A (en) * 1975-05-12 1977-07-26 Ormite, Inc. Synthetic slate
DE2613768C3 (de) * 1976-03-31 1984-09-06 Fa. Ph. Kurtz, 6981 Hasloch Vorrichtung zum zweistufigen Herstellen von geschäumten Thermoplast-Erzeugnissen
US4153399A (en) * 1977-09-08 1979-05-08 Ptx-Pentronix, Inc. Multiple punch tool set for powder compacting press
US4233006A (en) * 1978-10-10 1980-11-11 Wheaton Industries Machine for forming expanded resinous products
US4490321A (en) * 1982-12-16 1984-12-25 Klinkau & Co. Gmbh Method and apparatus for manufacturing filter plates or the like

Also Published As

Publication number Publication date
CA1256259A (fr) 1989-06-27
ATE41623T1 (de) 1989-04-15
US4867670A (en) 1989-09-19
EP0177628A1 (fr) 1986-04-16
DE3477357D1 (en) 1989-04-27

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