EP0115552B1 - Appareil pour la fabrication de pièces moulées - Google Patents

Appareil pour la fabrication de pièces moulées Download PDF

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Publication number
EP0115552B1
EP0115552B1 EP83101104A EP83101104A EP0115552B1 EP 0115552 B1 EP0115552 B1 EP 0115552B1 EP 83101104 A EP83101104 A EP 83101104A EP 83101104 A EP83101104 A EP 83101104A EP 0115552 B1 EP0115552 B1 EP 0115552B1
Authority
EP
European Patent Office
Prior art keywords
pressed
compound
dividers
pressing tool
mixture
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
EP83101104A
Other languages
German (de)
English (en)
Other versions
EP0115552A1 (fr
Inventor
Edmund Munk
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 - Werke Jf Werz KG
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 DE8383101104T priority Critical patent/DE3374283D1/de
Priority to EP83101104A priority patent/EP0115552B1/fr
Priority to AT83101104T priority patent/ATE30532T1/de
Priority to US06/573,561 priority patent/US4544344A/en
Priority to JP59016198A priority patent/JPS59165624A/ja
Priority to CA000446735A priority patent/CA1221215A/fr
Priority to ES529464A priority patent/ES8504551A1/es
Priority to AU26019/84A priority patent/AU569499B2/en
Publication of EP0115552A1 publication Critical patent/EP0115552A1/fr
Priority to IN716/CAL/84A priority patent/IN162424B/en
Priority to US06/716,233 priority patent/US4629594A/en
Application granted granted Critical
Publication of EP0115552B1 publication Critical patent/EP0115552B1/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
    • 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
    • B27N5/02—Hollow articles

Definitions

  • the invention relates to a device for the production of thin-walled molded parts from a non-rising mixture of fibers and a thermosetting synthetic resin with a pressing tool lower part, which has the mold cavities to be compressed, and a complementary pressing tool upper part, in which during the filling of the mixture to be pressed into the molding cavities of the molding tool lower part projecting molding compound dividers are provided.
  • the invention relates to the production of such relatively thin-walled molded parts, in which at least two components of the molded part are at a steep angle to one another.
  • the lower die part and the upper die part are provided with corresponding depressions or elevations.
  • the mixture to be pressed is filled into the lower part of the pressing tool in the required quantity and filling level.
  • the upper part of the pressing tool is subsequently retracted, it should compress the mixture, in particular in the depressions of the lower part of the pressing tool, towards the steep side faces.
  • this can often not be achieved because the filled mixture has a bond due to its fibrous structure, which can no longer be separated by the retracting pressing tool upper part.
  • a device has therefore already become known (DE-A-3 045 702) in which a stamp which is pushed approximately centrally into the bottom of the mold cavity and is actuated by a spring is arranged in the mold cavities of the press tool lower part.
  • This known device is quite complex and presumably also susceptible because the stamp must be arranged in a sealed manner in each mold cavity in such a way that nothing of the material to be pressed can end up in the space into which the stamp is lowered during the pressing, but nevertheless the ease of movement of the stamp must be ensured.
  • the object on which the invention is based is therefore to specify a device for producing molded parts from a non-ascending mixture which is simple in construction and easy to handle and yet permits uniform compression of the mixture to be pressed during pressing.
  • This object is achieved in that the shape of the molding compound adapted to the shape of the mold cavities are attached to a frame and can be inserted with this before the filling of the mixture between the pressing tool part and the pressing tool part and lowered against the pressing tool part so that the molding compound parts in the Protrude mold cavities.
  • the molding compound divider is used before the mixture to be pressed is poured into the pressing tool lower part.
  • the molding compound divider can carry out a vibration in one or more direction (s) which includes an angle other than zero with the pressing direction.
  • the molding compound divider is removed from the lower part of the pressing tool before the upper part of the pressing tool moves into the lower part of the pressing tool and presses the molded part in the desired manner without fluctuations in density
  • the new device can be used in cold pressing and / or hot pressing.
  • FIG. 7 shows the top view of the underside of a conical molding compound divider.
  • FIG. 1 shows an exemplary embodiment of a possible molded part 1 to be produced with the device according to the invention.
  • This molded part 1 is an angular strip, as is required, for example, for the protection of the edges when packaging cuboid devices such as electric cookers, washing machines or the like .
  • Fig. 1 shows only the cross section of the angle bar whose longitudinal extension extends into the plane of the drawing with the cross section unchanged.
  • angle strips 1 are generally not produced as individual molded parts, but the pressed molded part consists of a multiple arrangement as can be seen in FIG. 2 and from which the individual angle strips 1 are obtained by separating the lines 2.
  • FIG. 3 shows a press with the molding compound dividers according to the invention, which are provided for producing a molded part, as shown in FIG. 2.
  • the press has a press tool lower part 3, which is designed according to the shape of the molded part to be pressed.
  • Fig. 3 illustrates that the shape of the pressing tool lower part 3 has very steep surfaces which can merge directly or with the interposition of a flat surface.
  • the press in Fig. 3 is shown during the filling process i.e. the pressing tool upper part 4, which is also designed according to the molded part to be pressed, is in its upper end position.
  • the molding compound dividers 6 are located between the pressing tool upper part 4 and the pressing tool lower part 3.
  • the molding compound dividers have the shape of knife-like webs which are fastened parallel to one another on a frame (indicated by line 7). If necessary, the knife-like webs can even protrude to the bottom of the depressions in the lower press part 3.
  • the molding compound dividers 6 have taken up their position in the press, the mixture is filled, for example, up to line 8 into the pressing tool lower part, the molding compound dividers also being able to vibrate during filling or after filling.
  • the mixture for producing the molded part consists of fibers such as lignocellulose-containing fibers, crushed and dried wood chips, bagasse fibers and the like. and a thermosetting resin such as a melamine-urea formaldehyde or phenol formaldehyde resin.
  • a thermosetting resin such as a melamine-urea formaldehyde or phenol formaldehyde resin.
  • fibers of other materials such as glass fibers and others alone or a plurality of these mixed with one another, to which appropriate, preferably organic, binders have been added.
  • the molding compound is removed from the space between the upper pressing section and the lower pressing section. Then the upper part of the pressing tool is lowered onto the lower part of the pressing tool and the molded part - if it is a one-step pressing process - is finished pressed.
  • the press in FIGS. 3 and 4 is designed such that the pressing tool lower part 3 is stationary and the pressing tool upper part 4 is arranged to be movable vertically from top to bottom. In principle, however, it does not matter which of the pressing tools acts against the corresponding counter-tool on the molding compound from above. It is also possible that the lower tool is retracted upwards or that both tools are moved against each other.
  • the molded part consists of a series of pot-like depressions with steep walls, which are kept at a distance from more or less flat surfaces arranged between them.
  • Such molded parts have, for example, the shape of egg crates.
  • the device for producing such molded parts is constructed in exactly the same way as the device shown in FIG. 3.
  • Only the molding compound dividers projecting into the depression of the pressing tool must have a corresponding shape, for example a pyramid-shaped shape (FIG. 5), the shape of a cross-shaped knife arrangement (FIG. 6) or the shape of a cone (FIG. 7).
  • Figures 5 to 7 show the top view from below of such a molding compound divider.
  • any other shapes of the molding compound divider are also conceivable, but all the shapes are more or less similar to the shape of the molding to be pressed.

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)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Compressor (AREA)
  • Mechanical Operated Clutches (AREA)
  • Moulding By Coating Moulds (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Reinforced Plastic Materials (AREA)

Claims (6)

1. Dispositif permettant de fabriquer des éléments profilé à paroi mince à partir d'une composition non-expansible faite de fibres et d'une résine synthétique thermodurcissable, dispositif qui comprend un outil inférieur de compression (3), presentant des cavités de formage recevant la composition à comprimer, et un outil supérieur de compression (4) de forme complémentaire, et dans lequel sont prévus des organes (6) de répartition de matière compressible, pénétrant dans les cavités de formage de l'outil inférieur de compression (3), lors du remplissage de celles-ci par la composition à comprimer, caractérisé en ce que les organes (6) de répartition de matière compressible, dont la configuration est adaptée à celle des cavités de formage, sont fixés à un cadre (7) et, avant que l'on verse la composition, peuvent, à l'aide de ce cadre, être engagés entre l'outil supérieur de compression (4) et l'outil inférieur de compression (3) et abaissés en direction de l'outil inferieur de compression (3) de telle manière que les organes (6) de répartition de matière compressible pénètrent dans les cavités de formage.
2. Dispositif selon la revendication 1, caractérisé en ce que les organes de répartition de matière compressible sont constitués par des nervures en forme de couteaux qui sont fixées parallèlement entre elles, sur le cadre (7).
3. Dispositif selon la revendication 1, caractérisé en ce que les organes de répartition de matière compressible comprennent au moins un ensemble cruciforme de couteaux fixé au cadre (7).
4. Dispositif selon la revendication 1, caractérisé en ce que les organes de répartition de matière compressible comprennent au moins un corps pyramidal fixé au cadre (7).
5. Dispositif selon la revendication 1, caractérisé en ce que les organes de répartition de matière compressible comprennent au moins un corps de forme conique fixé au cadre (7).
6. Dispositif selon la revendication 1 et l'une au moins des revendications 2 à 5, caractérisé en ce que le cadre (7), portant les organes de répartition de matière compressible, est pourvu d'une commande additionnelle qui est en mesure d'animer les organes de répartition de matière compressible d'un mouvemant répété permanent dans une direction formant avec la direction de compression un angle different de zero.
EP83101104A 1983-02-05 1983-02-05 Appareil pour la fabrication de pièces moulées Expired EP0115552B1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DE8383101104T DE3374283D1 (en) 1983-02-05 1983-02-05 Apparatus for manufacturing moulded articles
EP83101104A EP0115552B1 (fr) 1983-02-05 1983-02-05 Appareil pour la fabrication de pièces moulées
AT83101104T ATE30532T1 (de) 1983-02-05 1983-02-05 Vorrichtung zur herstellung von formteilen.
US06/573,561 US4544344A (en) 1983-02-05 1984-01-26 Arrangement for producing shaped parts
JP59016198A JPS59165624A (ja) 1983-02-05 1984-02-02 薄壁成形品の製造装置
CA000446735A CA1221215A (fr) 1983-02-05 1984-02-03 Dispositif et methode de faconnage de pieces
ES529464A ES8504551A1 (es) 1983-02-05 1984-02-04 Dispositivo para la fabricacion de partes moldeadas
AU26019/84A AU569499B2 (en) 1983-02-05 1984-03-22 Compression moulding
IN716/CAL/84A IN162424B (fr) 1983-02-05 1984-10-11
US06/716,233 US4629594A (en) 1983-02-05 1985-03-26 Method of producing shaped parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83101104A EP0115552B1 (fr) 1983-02-05 1983-02-05 Appareil pour la fabrication de pièces moulées

Publications (2)

Publication Number Publication Date
EP0115552A1 EP0115552A1 (fr) 1984-08-15
EP0115552B1 true EP0115552B1 (fr) 1987-11-04

Family

ID=8190280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101104A Expired EP0115552B1 (fr) 1983-02-05 1983-02-05 Appareil pour la fabrication de pièces moulées

Country Status (9)

Country Link
US (2) US4544344A (fr)
EP (1) EP0115552B1 (fr)
JP (1) JPS59165624A (fr)
AT (1) ATE30532T1 (fr)
AU (1) AU569499B2 (fr)
CA (1) CA1221215A (fr)
DE (1) DE3374283D1 (fr)
ES (1) ES8504551A1 (fr)
IN (1) IN162424B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4751034A (en) * 1986-03-14 1988-06-14 Delong Edward A Method of molding using dissociated lignocellulosic material and the product so produced
SE461775B (sv) * 1986-04-24 1990-03-26 Swedoor Ab Foerfarande foer tillverkning av djupformad skiva
DE59306280D1 (de) * 1993-08-26 1997-05-28 Werzalit Ag & Co Vorrichtung zum Einsatz beim Einfüllen eines Gemisches in ein Presswerkzeug
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
US8475894B2 (en) 2008-03-28 2013-07-02 Nobel Environmental Technologies Corp. Engineered molded fiberboard panels, methods of making the panels, and products fabricated from the panels
US7967595B1 (en) 2009-04-02 2011-06-28 John Paul Schofield Machine and method for reshaping multiple plastic bottles into rock shapes

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1092183B (de) * 1955-10-05 1960-11-03 G Gassareck Fa Verfahren und Vorrichtung zum Pressen von pyramiden- oder Kegelstumpffoermigen, einseitig geschlossenen Hohlkoerpern aus einer trockenen, pulverigen oder kleinkoernigen Pressmasse, z.B. gegebenenfalls mit einem Bindemittel versetzten kurzen Holzspaenen od. dgl.
DE1254353B (de) * 1959-10-16 1967-11-16 Interbygg Shwan & Co Herstellen von Bauplatten durch Aushaerten von Polyester-Formmassen
US3340574A (en) * 1965-07-22 1967-09-12 Kirkhof Mfg Corp Universal forming press
US3518334A (en) * 1968-10-01 1970-06-30 Kirkhof Mfg Corp Method of forming three dimensional plastic articles
BE790805A (nl) * 1971-12-10 1973-02-15 Eternit Nv Inrichting voor het vervaardigen van vormlichamen uit vezelstof
US4061813A (en) * 1974-06-11 1977-12-06 The United States Of America As Represented By The Secretary Of Agriculture Combination sheathing support - member building product
SU589065A1 (ru) * 1974-12-23 1978-01-25 Ленинградский зональный научно-исследовательский и проектный институт типового и экспериментального проектирования жилых и общественных зданий Формовочна установка дл уплотнени смесей
DE2534774A1 (de) * 1975-08-04 1977-02-17 Inselkammer Hans Pressform zum herstellen von formkoerpern aus beleimtem spanmaterial
DD130121A5 (de) * 1976-04-28 1978-03-08 Werz Furnier Sperrholz Verfahren und vorrichtung zur herstellung einer matte a
US4158537A (en) * 1977-12-12 1979-06-19 United Technologies Corporation Selective loading of plastic molding compression molds
JPS5567438A (en) * 1978-11-15 1980-05-21 Matsushita Electric Works Ltd Preparation of flushplate decorated with pattern
US4221751A (en) * 1979-03-07 1980-09-09 Board Of Control Of Michigan Technological University Articles molded from papermill sludge
DE3045702A1 (de) * 1980-12-04 1982-07-08 Valentin 6503 Mainz-Kastel Schollmayer Pressform zur herstellung von hohlkoerpern aus holzfasern und/oder -spaenen

Also Published As

Publication number Publication date
JPS59165624A (ja) 1984-09-18
AU569499B2 (en) 1988-02-04
US4629594A (en) 1986-12-16
JPH0434485B2 (fr) 1992-06-08
ES529464A0 (es) 1985-05-01
DE3374283D1 (en) 1987-12-10
US4544344A (en) 1985-10-01
EP0115552A1 (fr) 1984-08-15
AU2601984A (en) 1985-09-26
IN162424B (fr) 1988-05-28
CA1221215A (fr) 1987-05-05
ATE30532T1 (de) 1987-11-15
ES8504551A1 (es) 1985-05-01

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