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EP0177628B1 - Method and apparatus for the production of pressed profiled articles - Google Patents

Method and apparatus for the production of pressed profiled articles 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
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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
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German (de)
French (fr)
Other versions
EP0177628A1 (en
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 DE8484112135T priority Critical patent/DE3477357D1/en
Priority to EP84112135A priority patent/EP0177628B1/en
Priority to AT84112135T priority patent/ATE41623T1/en
Priority to CA000473886A priority patent/CA1256259A/en
Publication of EP0177628A1 publication Critical patent/EP0177628A1/en
Priority to US07/102,345 priority patent/US4867670A/en
Application granted granted Critical
Publication of EP0177628B1 publication Critical patent/EP0177628B1/en
Expired legal-status Critical Current

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    • 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.

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  • 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)

Abstract

In an apparatus for producing shaped bodies of non-swelling mixture, of fiber materials with a heat hardenable binding medium, the shaped body of a complex shape can be formed so that at its visible side seams are not formed during pressing, by means of an additional pressing of a pre-pressed mixture in a one piece cavity press member before it reaches its final shape.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von gepressten Profilkörpern aus einem nicht steigfähigen Gemisch von mit einem wärmehärtbaren Bindemittel vermischten Faserstoffen, bei dem das Gemisch in der Weise vorgepresst und anschliessend zu seiner endgültigen Form in einer Heisspresse ausgehärtet wird, dass ein mit dem unverdichteten Gemisch gefülltes erstes Presswerkzeugunterteil in eine Presse eingefahren wird und dass das Gemisch beim Schliessen der Presse unter gleichzeitigem Vorpressen in deren Presswerkzeugoberteil hinein gepresst wird und dass dann anstelle des ersten Presswerkzeugunterteils ein zweites Presswerkzeugunterteil eingefahren wird.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.

Ein solches Verfahren ist bekannt (DE-PS 2 309 975). Das nicht steigfähige Gemisch besteht häufig aus lignozellulosehaltigen Faserstoffen, wie zerkleinerten und getrockneten Holzspänen, Bagassefasern u.ä., die mit einem wärmehärtbaren Kunstharz, wie Melamin-, Harnstoffformaldehyd- oder Phenolformaldehydharz vermischt sind. Anstelle der zerkleinerten und getrockneten Holz- oder Bagassefasern können aber auch Fasern anderer Werkstoffe, wie Glasfasern, Steinwolle allein oder mehrere derselben gemischt verwendet werden, denen entsprechende, vorzugsweise organische Bindemittel zugesetzt sind.Such a method is known (DE-PS 2 309 975). 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. Instead of the shredded and dried wood or bagasse fibers, 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.

Das bekannte Verfahren und die entsprechende Vorrichtung zur Durchführung des Verfahrens ist für die Herstellung von relativ kleinen Profilkörpern, wie beispielsweise Ronden ab einem Durchmesser von fünf Zentimeter oder aus Ringen und Verbindungsstegen mit geringen Wandstärken bestehende gitterartigen Netzwerken, wie Ziergittern oder Deckenrasterelementen, versehen. Das bekannte Verfahren hat sich bei der Herstellung dieser Produkte auch bewährt, wenn ihre Bestandteile eine gleichmässige Stärke aufweisen. Das bekannte Verfahren führt jedoch zu qualitätiv nicht mehr ausreichenden Produkten, wenn Bestandteile des herzustellenden Produktes, beispielsweise eines Deckenrasterelementes, stufenförmig abgesetzte Stege sind, d.h. sie unterschiedliche Tiefe aufweisen. Wenn diese Produkte nach dem bekannten Verfahren hergestellt werden, dann können sie auf der Seite, auf welcher die Stege unterschiedliche Tiefe aufweisen und welches gleichzeitig die Sichtseite des Produktes ist, einen Grat besitzen, der mit Aufwand oder überhaupt nicht entfernt werden kann.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. However, 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.

Der Erfindung liegt daher die Aufgabe zugrunde, das bekannte Verfahren in der Weise weiter zu entwickeln, dass auch Produkte, welche Stege mit unterschiedlicher Tiefe besitzen, in der Weise gepresst werden können, dass sie keinen Grat auf der Sichtseite haben.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.

Diese Aufgabe ist gemäss der einen Lösung dadurch gelöst, dass das vorgepresste Gemisch beim nochmaligen Schliessen der Presse in das zweite Presswerkzeugunterteil hinein gepresst, dort heissgepresst und dabei ausgehärtet wird.According to one solution, 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.

Die zweite Lösung der Aufgabe besteht darin, dass das vorgepresste Gemisch beim nochmaligen Schliessen der Presse in das zweite Presswerkzeugunterteil hineingepresst wird, danach das zweite Presswerkzeugunterteil unter ein anderes Presswerkzeugoberteil verfahren und durch Absenken dieses Presswerkzeugoberteils das vorgepresste Gemisch heissgepresst und dabei ausgehärtet wird.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.

Für die Durchführung des Verfahrens gemäss Patentanspruch 1 hat sich eine Vorrichtung als vorteilhaft erwiesen, bei der die Presse mit einem heb- und senkbaren sowie beheizbaren Presswerkzeugoberteil sowie einem beheizbaren und einem nicht beheizbaren Presswerkzeugunterteil ausgestattet ist, wobei das nicht beheizbare Presswerkzeugunterteil mit dem Gemisch anzufüllende Hohlräume und einen diese umgebenden, mit einer umsteuerbaren Heb- und Senkvorrichtung versehenen Rahmen aufweist, der beim Pressen soweit absenkbar ist, dass Mittelteile des Presswerkzeugunterteils die die Böden der Hohlräume bilden, das vorgepresste Gemisch in die Vertiefungen des Presswerkzeugoberteils einpressen können, bei dem ausserdem in das beheizbare Presswerkzeugunterteil der Raumform des Profilkörpers entsprechende Vertiefungen eingelassen sind und das Presswerkzeugoberteil ebenfalls einen, mit einer umsteuerbaren Heb-und Senkvorrichtung versehenen Rahmen und einen Mittel besitzt und über das Presswerkzeugunterteil verfahrbar ausgestaltet ist.For the implementation of the method according to claim 1, 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.

Für die Durchführung des Verfahrens gemäss Patentanspruch 2 hat sich eine Vorrichtung als vorteilhaft erwiesen, welche eine Reihe von mit der vorstehend beschriebenen Vorrichtung übereinstimmende Merkmale aufweist und bei der darüberhinaus in das beheizbare Presswerkzeugunterteil der Raumform des Profilkörpers entsprechende Vertiefungen eingelassen sind, und das Presswerkzeugoberteil ebenfalls einen, mit einer umsteuerbaren Heb- und Senkvorrichtung versehenen Rahmen und einen Mittelteil besitzt, und neben diesem Presswerkzeugoberteil ein weiteres heb- und senkbares sowie beheizbares Presswerkzeugoberteil angeordnet ist, welches auf der dem beheizbaren Presswerkzeugunterteil zugewandten Fläche mit den Vertiefungen entsprechenden stempelartigen Erhöhungen versehen ist, und jedes der Presswerkzeugunterteile unter jedes der Presswerkzeugoberteile verfahrbar ist.For the implementation of the method according to claim 2, 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.

Verfahren und Vorrichtungen sind nachstehend anhand der Figuren 1 und 2 erläutert. Es zeigen:

  • Fig. 1 die Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 und
  • Fig. 2 die Vorrichtung zur Durchführung des Verfahrens nach Anspruch 2.
Methods and devices are explained below with reference to Figures 1 and 2. Show it:
  • Fig. 1 shows the device for performing the method according to claim 1 and
  • 2 shows the device for carrying out the method according to claim 2.

In Fig. 1 ist auf der linken Seite das erste Presswerkzeugunterteil 1 zu erkennen, welches in an sich bekannter Weise aus dem feststehenden Boden 2 des Presswerkzeugunterteils 1 und den vertikal gegenüber diesen bis zu Anschlägen 3 verschiebbaren Mittelteil 4 und Aussenteil 5 besteht. Zwischen dem Mittelteil 4 und dem Aussenteil 5 besteht somit ein Füllraum 6 zur Aufnahme des Gemisches, aus dem der Profilkörper mit stufenförmig abgesetzten, unterschiedlich tiefen Stegen gepresst werden soll. In Fig. 1 ist der Einfachheit wegen nur ein Einzelwerkzeug gezeichnet. Wenn mit der gezeigten Vorrichtung beispielsweise Deckenrasterelemente gepresst werden sollen, dann ist die Vorrichtung als Mehifachwerkzeug ausgebildet, welches einer Vielzahl gleicher, einstückig miteinander verbundener Einzelwerkzeuge entspricht.In Fig. 1, 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. For simplicity, only 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.

In der mittleren Vorrichtung in Fig. 1 ist wieder das erste Presswerkzeugunterteil 1, und zwar diesmal in Pressstellung, zu erkennen, welches unter das Presswerkzeugoberteil 7 verfahren worden ist. Das horizontal verfahrbare Presswerkzeugoberteil 7 besteht ebenfalls in an sich bekannter Weise aus dem heb- und senkbaren Mittelteil 8 und dem relativ zum Mittelteil 8 bis zu den Anschlägen 9 verschiebbaren Aussenteil 10.In the middle device in FIG. 1, 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.

In der rechten Vorrichtung in Fig. 1 ist das über das zweite Presswerkzeugunterteil 11 verfahrene und sich in Pressstellung befindliche Presswerkzeugoberteil 7 zu erkennen.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.

Das Verfahren gemäss Anspruch 1 wird mit der in Fig. 1 dargestellten Vorrichtung in folgender Weise durchgeführt: Das zum Profilkörper zu verpressende Gemisch wird in den Füllraum 6 eingefüllt. Dann wird das erste Presswerkzeugunterteil 1 unter das Presswerkzeugoberteil 7 verfahren. Durch das Absenken des Presswerkzeugoberteils 7 wird das im ersten Presswerkzeugunterteil 6 befindliche Gemisch verdichtet und in den Hohlraum 12 des Presswerkzeugoberteils 7 gepresst. Dieser Zeitpunkt ist durch den mittleren Teil der Fig. 1 verdeutlicht. Danach wird das Presswerkzeugoberteil 7 nach oben und nach rechts verfahren, wodurch es über das zweite Presswerkzeugunterteil 11 gelangt. Das erste Presswerkzeugunterteil 6 kann gleichzeitig in seine Ausgangslage, wie im linken Teil der Fig. 1 gezeigt, zurückgeführt werden. Dann wird das Presswerkzeugoberteil 7 auf das zweite Presswerkzeugunterteil 11 abgesenkt, wobei der vorgepresste Profilkörper aus dem Hohlraum 12 in den Hohlraum 13 des zweiten Presswerkzeugunterteils 11 gepresst, dabei gleichzeitig fertiggepresst und durch Zuführung von Wärme ausgehärtet wird. Zu diesem Zweck können Presswerkzeugoberteil 7 und zweites Presswerkzeugunterteil 11 oder nur das zweite Presswerkzeugunterteil 11 mit einer Heizung versehen sein. Der fertige Profilkörper wird anschliessend von nicht gezeigten Ausstossern ausgeworfen.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. Then the first press tool lower part 1 is moved under the press tool upper part 7. By lowering the upper pressing tool 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. Then 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. Then 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. For this purpose, 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 zeigt die Vorrichtung, mit welcher das Verfahren gemäss Anspruch 2 ausgeführt werden kann. Sie besteht aus dem ersten Presswerkzeugunterteil 14 und dem ersten Presswerkzeugoberteil 15, dem zweiten Presswerkzeugunterteil 16 und dem zweiten Presswerkzeugoberteil 17. Die Presswerkzeugoberteile 15, 17 und Presswerkzeugunterteile 14,16 sind in an sich bekannter Weise aufgebaut, wie im Zusammenhang mit Fig. 1 bereits erläutert worden ist. Die in Fig. 2 gezeigten Presswerkzeuge unterscheiden sich von denjenigen in Fig. 1 gezeigten dadurch, dass sie als Werkzeuge für einen vollständigen aus einer Vielzahl von Stegen bestehenden Profilkörper ausgebildet sind.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.

Das Verfahren gemäss Anspruch 2 wird nun in folgender Weise ausgeführt: Das erste Presswerkzeugunterteil 14 wird in einer gegenüber der Darstellung in Fig. 2 nach links verschobenen Stellung mit der Pressmasse gefüllt. Dann wird das erste Presswerkzeugunterteil 14 unter das erste Presswerkzeugoberteil 15 verfahren. Das ist die aus Fig. 2 ersichtliche Stellung. Anschliessend wird das erste Presswerkzeugoberteil 15 auf das erste Presswerkzeugunterteil 14 abgesenkt, wobei das im ersten Presswerkzeugunterteil 14 befindliche Gemisch vorgepressst und in die Hohlräume 18 im ersten Presswerkzeugoberteil 15 übergeben wird. Danach wird das zweite Presswerkzeugunterteil 16 unter das erste Presswerkzeugoberteil 15 verfahren. Bei einem erneuten Absenken des ersten Presswerkzeugoberteils 15 wird das bereits verdichtete Gemisch aus den Hohlräumen 18 im ersten Presswerkzeugoberteil 15 in die Hohlräume 19 im zweiten Presswerkzeugunterteil 16 übergeben. Dann wird das zweite Presswerkzeugunterteil 16 unter das zweite Presswerkzeugoberteil 17 verfahren. Das ist die aus Fig. 2, rechte Seite, ersichtliche Stellung.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. Then 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. When 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. Then 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.

Durch Absenken des zweiten Presswerkzeugoberteils 17 wird der in den Hohlräumen 19 befindliche, vorgepresste Profilkörper fertiggepresst und durch Zuführung von Wärme ausgehärtet. Die Wärme wird durch Einschalten der Heizungen 20 erzeugt. Der fertige Profilkörper wird anschliessend von nicht gezeigten Ausstossern aus den Hohlräumen 19 ausgestossen.By lowering the second pressing tool upper part 17, 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.

Claims (4)

1. Method of producing pressed shaped bodies of a non-swelling mixture of fibrous materials mixed with a heathardenable binding agent, in which the mixture is in such a way pre-pressed (rough pressed) and subsequently hardened in a hot press to its final shape that a first lower part (1) of a pressing tool which is filled with the noncompressed mixture is placed into a press, and that the mixture, upon closing of the press, with simultaneous pre-pressing, is pressed into the upper part (7) of the pressing tool, and that then, instead of the first lower part of the pressing tool, a second lower part (11) of the pressing tool is placed into the press, characterized in that the pre-pressed (rough pressed) mixture is pressed into the second lower part (11) of the pressing tool during repeated closing of the press, then hot-pressed therein and thereby hardened.
2. A method of producing pressed shaped bodies of a non-swelling mixture of fibrous materials mixed with a heathardenable binding agent, in which the mixture is in such a way pre-pressed (rough pressed) and subsequently hardened in a hot press to its final shape that a first lower part (14) of a pressing tool which is filled with the noncompressed mixture is placed into a press, and that the mixture, upon closing of the press, with simultaneous pre-pressing, is pressed into the upper part (15) of the pressing tool, and that then, instead of said first lower part (14) of the pressing tool, a second lower part (16) of the pressing tool is placed into said press, characterized in that said pre-pressed mixture is pressed during repeated closing of said press into said second lower part (16) of the pressing tool, and thereafter said second lower part (16) of the pressing tool is moved under another upper part (17) of the pressing tool and, by lowering of said upper part (17) of the pressing tool said pre-pressed mixture is hot-pressed and thereby hardened.
3. An arrangement for performing the method as claimed in claim 1, in which said press is provided with a liftable and lowerable as well as heatable upper part (7) of the pressing tool, and with one heatable and one non-heatable lower part (1) of the pressing tool, with said non-heatable lower part (1) of the pressing tool being provided with hollow spaces (cavities) which are to be filled with said mixture, and with a frame (outer) member (5) surrounding them and provided with a controllable lifting (raising) and lowering device and which, during the pressing process, is capable of being lowered to such an extent that intermediate members (4) of said lower part (1) of the pressing tool, which form the bottoms of said hollow spaces, are capable of pressing said pre-pressed mixture into the depressions (cavities) provided for in said upper part of the pressing tool, characterized in that hollow spaces (13) (cavities) corresponding to the geometrical shape of said shaped body are let into said heatable lower part (11) of the pressing tool, and that said upper part (7) of the pressing tool likewise comprises a frame (outer) member (10) provided with a controllable lifting and lowering device, and an intermediate member (8) and is designed capable of being moved over said lower part (11) of the pressing tool.
4. An arrangement for performing the method as claimed in claim 2, in which said press is provided with a liftable and lowerable upper part (15) of the pressing tool, as well as with one heatable and one non-heatable lower part (14, 16) of the pressing tool, with said non-heatable lower part (14) of the pressing tool being provided with hollow spaces to be filled with said mixture, and with a frame (outer) member surrounding them and provided with a controllable lifting and lowering device which, during the pressing process, is capable of being lowered to such an extent that intermediate members of said lower part (14) of the pressing tool, which form the bottoms of said hollow spaces, are capable of pressing said pre-pressed mixture into the depressions (cavities) provided for in said upper part of the pressing tool, characterized in that hollow spaces (19) corresponding to the geometrical shape of said shaped body are let into said heatable lower part (16) of the pressing tool, and that said upper part (15) of the pressing tool likewise comprises a frame (outer) member provided with a controllable lifting and lowering device, and an intermediate member, and that besides said upper part (15) of the pressing tool a further liftable and lowerable as well as heatable upper part (17) of the pressing tool is disposed which, at its surface facing toward said heatable lower part (16) of the pressing tool, is provided with stamp-shaped raised portions corresponding to said hollow spaces (19), and that each of said lower parts (14, 16) of the pressing tools is capable of being moved under each of said upper parts of said pressing tools.
EP84112135A 1984-10-10 1984-10-10 Method and apparatus for the production of pressed profiled articles Expired EP0177628B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE8484112135T DE3477357D1 (en) 1984-10-10 1984-10-10 Method and apparatus for the production of pressed profiled articles
EP84112135A EP0177628B1 (en) 1984-10-10 1984-10-10 Method and apparatus for the production of pressed profiled articles
AT84112135T ATE41623T1 (en) 1984-10-10 1984-10-10 METHOD AND DEVICE FOR THE MANUFACTURE OF PRESSED PROFILE BODY.
CA000473886A CA1256259A (en) 1984-10-10 1985-02-08 Method and apparatus for manufacturing moulded profiles
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 (en) 1984-10-10 1984-10-10 Method and apparatus for the production of pressed profiled articles

Publications (2)

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EP0177628A1 EP0177628A1 (en) 1986-04-16
EP0177628B1 true EP0177628B1 (en) 1989-03-22

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EP84112135A Expired EP0177628B1 (en) 1984-10-10 1984-10-10 Method and apparatus for the production of pressed profiled articles

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US (1) US4867670A (en)
EP (1) EP0177628B1 (en)
AT (1) ATE41623T1 (en)
CA (1) CA1256259A (en)
DE (1) DE3477357D1 (en)

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US5225135A (en) * 1991-08-30 1993-07-06 General Motors Corporation Balanced pressure compression molding method
JP3048529B2 (en) * 1995-11-21 2000-06-05 太平洋セメント株式会社 Molded compression skin structure fiber panel
SE509775C2 (en) * 1997-07-09 1999-03-08 Sonoform Ab Method for producing a molded product and molding tool used in the practice of the method
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 (en) * 2005-11-04 2007-05-05 Imal Srl MACHINE FOR THE FORMATION OF MATERIAL MATERIALS TO MANUFACTURE, PARTICULARLY FOR THE IMPLEMENTATION OF CROSSPIECES FOR LOADING BALLS, AND RELATIVE METHOD
EP3072654A1 (en) 2015-03-26 2016-09-28 Topalit GmbH Method for manufacturing an even moulded part

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DE1213110B (en) * 1963-12-21 1966-03-24 Arnold Adler Dipl Ing Method, arrangement and press for pressing large size chip formers
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Also Published As

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

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