EP0507731B1 - Method and apparatus for manufacturing a fibrous moulded article - Google Patents
Method and apparatus for manufacturing a fibrous moulded article Download PDFInfo
- Publication number
- EP0507731B1 EP0507731B1 EP92810208A EP92810208A EP0507731B1 EP 0507731 B1 EP0507731 B1 EP 0507731B1 EP 92810208 A EP92810208 A EP 92810208A EP 92810208 A EP92810208 A EP 92810208A EP 0507731 B1 EP0507731 B1 EP 0507731B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- moulded article
- moulded
- material components
- blanks
- article blanks
- Prior art date
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- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 238000000034 method Methods 0.000 title claims description 15
- 238000000151 deposition Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000000465 moulding Methods 0.000 claims description 13
- 239000011230 binding agent Substances 0.000 claims description 9
- 239000000654 additive Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 2
- 239000012634 fragment Substances 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims 6
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000005494 condensation Effects 0.000 claims 1
- 238000009833 condensation Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 239000004745 nonwoven fabric Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000002657 fibrous material Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000012432 intermediate storage Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 244000198134 Agave sisalana Species 0.000 description 1
- 229920002101 Chitin Polymers 0.000 description 1
- 206010010904 Convulsion Diseases 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 241000219146 Gossypium Species 0.000 description 1
- 240000008790 Musa x paradisiaca Species 0.000 description 1
- 235000018290 Musa x paradisiaca Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
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
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
-
- 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 present invention relates to a method for producing fibrous press-molded parts, such as those used in automobile construction, in which suitable material components, in particular fibers, binders and additives, are fed into a feed channel by means of a first device, in which the supplied material components are deposited on a transport device by means of a second device for forming a molded part blank, in which the deposited molded blank is fed to a heating device in which the molded blank is subjected to a heat treatment for predrying and condensing the binders, in order then to be pressed into a preform in a preform press, in which the preform is fed to a molding press and in which a press molding is produced from the preform, and an apparatus for performing this method.
- suitable material components in particular fibers, binders and additives
- Such methods and devices are mainly used in the automotive industry, which uses such molded parts for the interior of vehicles.
- the good sound and heat insulating properties of these fibrous molded parts are particularly suitable for this.
- these molded parts Areas with different thickness and same density or same thickness and different density or different thickness and different density.
- the materials to be processed are placed evenly on a conveyor belt in order to initially produce a nonwoven fabric with a constant thickness and constant density.
- This prefabricated nonwoven fabric is then passed through a contour device with which any relief shapes are cut out of the nonwoven fabric, milled, sawn and / or suctioned off. With this contour-imparting treatment of the nonwoven, molded parts can be produced which come close to the above-mentioned requirements.
- each new contour to be shaped also requires a change in the contour tools, be it cutting rollers, contour saws or milling head arrangements. These tool changes are expensive and mean that molded parts are only manufactured in large quantities and large stocks have to be accepted.
- the preforming press or in the molding press can be loaded simultaneously with the present invention and the production of the molded parts can thus be carried out more quickly and cost-effectively .
- controllable depositing device is connected to a control device which coordinates the individual devices required for the manufacturing process in order to optimally utilize the respective molding presses.
- control device which coordinates the individual devices required for the manufacturing process in order to optimally utilize the respective molding presses.
- speed of the supplied material components and their composition can be varied, the transport speed and the residence time in the heating device or in the feed can be varied.
- seizures are simultaneously used for different molded parts and the controllable depositing device is controlled in such a way that a molded part blank corresponding to the press mold is deposited for a specific press.
- the present invention allows a quick and individual production of molded blanks and leads to one flexible and optimally utilizable, ie cost-effective manufacturing plant. Any defective moldings detected during quality control, or fragments or cutting remnants can be put back into the feed device and used again in the present invention without additional effort.
- the system 1 shown in FIG. 1 for carrying out the method according to the invention has a first device 2.
- This device 2 comprises a container 3 for holding suitable raw materials, in particular fibrous materials with predominantly organic fibers, ie cotton, sisal, banana fibers etc., and a shredder 4 in which this raw material is broken up according to the requirements.
- This first device 2 also has an inlet 5 through which powdered binders and additives are added to the fibers.
- These are essentially resin compounds of the type usually used and well known to those skilled in the art.
- Can be used as additives materials containing chitin are also suitable. These materials give the end products their inherent stability and are extremely lightweight.
- the device 2 conveys the material components mixed in the desired composition into a feed channel 6, which can be moved like a trunk at its outer end.
- the shredder 4 is equipped with an adjustable roller in order to be able to adjust the delivery quantity and the nature of the raw material.
- the first device 2 is provided with control mechanisms, for example flaps, in order to regulate the desired air-fiber-resin mixture and its feed rate in the feed channel 6.
- the trunk-like end of the feed channel 6 is held and guided by a controllable arm 7 of the controllable depositing device 8.
- This arm moves the trunk-like end of the feed channel in a predetermined manner over a predetermined area of the transport device 9 in order to form a fiber material-like depot 11, in short a molded part blank, which corresponds to a desired geometric distribution.
- the outlet opening of the feed channel 6 is shaped and equipped accordingly.
- the material to be processed can also be deposited in an appropriately dimensioned drip tray.
- these shells suitably have deep-drawn bottom contours.
- the laying surface on which the molded part blanks 11 are built is permeable to air and, as part of the second device 12, lies above a suction device 13 which the fiber material is held in its stored contour.
- the transport device 9 shown in the present FIG. 1 essentially comprises a conveyor belt 14, with which the deposited fiber material forming the blank 11 is brought to a heating device 15.
- the binders in particular phenolic resins, are condensed.
- This heat treatment i.e. Temperature control and duration depends essentially on the composition of the binders used and is known to the person skilled in the art, for example from EP-A-76429.
- This treatment is controlled by a control device 18 coupled to the controllable depositing device 8.
- the vapors produced during this treatment are usually collected in a fume cupboard 16 and carried away.
- the molded part blanks 11 treated in this way are then fed to a preform press 17 and are compacted, preformed and fixed in a known manner therein using hot steam to form a preform.
- the production system 1 shown in the present FIG. 1 has two molding presses 19 which form the desired molds 21 from the preforms. These presses preferably have cutting tools on their periphery in order to cut off any protruding edges of the molded parts.
- the transport device comprises a rotatable one Transport table on which several blanks 11 can be placed.
- This carousel-like transport table essentially serves for the coordinated loading of the molding presses and, according to the invention, is coupled to the controllable depositing device 8 via the control device 18.
- their controls are also connected in a suitable manner to the control device 18.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Nonwoven Fabrics (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
Die vorliegende Erfindung betrifft ein Verfahren zur Fertigung fibröser Pressformteile, wie sie im Automobilbau verwendet werden, bei welchem geeignete Werkstoffkomponenten, insbesondere Fasern, Bindemittel und Zusatzstoffe mittels einer ersten Vorrichtung in einen Zuführkanal eingespeist werden,
bei welchem die zugeführten Werkstoffkomponenten mittels einer zweiten Vorrichtung zum Bilden eines Formteil-Rohlings auf eine Transportvorrichtung abgelegt werden,
bei welchen der abgelegten Formteil-Rohling einer Heizvorrichtung zugeführt wird, in welcher der Formteil-Rohling zur Vortrocknung und Kondensation der Bindemittel einer Hitzebehandlung unterworfen wird, um anschliessend in einer Vorformpresse zu einem Vorformling gepresst zu werden,
bei welchem der Vorformling einer Formpresse zugeführt wird, und in welcher aus dem Vorformling ein Pressformteil erzeugt wird,
sowie eine Vorrichtung zur Durchführung dieses Verfahrens.The present invention relates to a method for producing fibrous press-molded parts, such as those used in automobile construction, in which suitable material components, in particular fibers, binders and additives, are fed into a feed channel by means of a first device,
in which the supplied material components are deposited on a transport device by means of a second device for forming a molded part blank,
in which the deposited molded blank is fed to a heating device in which the molded blank is subjected to a heat treatment for predrying and condensing the binders, in order then to be pressed into a preform in a preform press,
in which the preform is fed to a molding press and in which a press molding is produced from the preform,
and an apparatus for performing this method.
Solche Verfahren und Vorrichtungen finden ihre Verwendung im wesentlichen in der Automobilindustrie, welche solche Pressformteile für die Innenausstattung der Fahrzeuge einsetzt. Die guten schall- und wärmeisolierenden Eigenschaften dieser faserigen Formteile sind dafür besonders geeignet. Um den spezifischen geometrischen, akustischen und Festigkeits-Anforderungen gerecht zu werden, weisen diese Formteile Bereiche mit unterschiedlicher Dicke und gleicher Dichte oder gleicher Dicke und unterschiedlicher Dichte oder unterschiedlicher Dicke und unterschiedlicher Dichte auf.Such methods and devices are mainly used in the automotive industry, which uses such molded parts for the interior of vehicles. The good sound and heat insulating properties of these fibrous molded parts are particularly suitable for this. In order to meet the specific geometric, acoustic and strength requirements, these molded parts Areas with different thickness and same density or same thickness and different density or different thickness and different density.
Bei bekannten Verfahren werden die zu verarbeitenden Werkstoffe gleichmässig auf ein Transportband abgelegt, um vorerst ein Faservlies mit konstanter Dicke und konstanter Dichte herzustellen. Dieses vorgefertigte Faservlies wird anschliessend durch eine Kontur-Vorrichtung geführt, mit welcher beliebige Reliefformen aus dem Faservlies herausgeschnitten, gefräst, gesägt und/oder abgesaugt werden. Mit dieser konturgebenden Behandlung des Faservlieses können Pressformteile erzeugt werden, welche den obengenannten Anforderungen nahekommen.In known methods, the materials to be processed are placed evenly on a conveyor belt in order to initially produce a nonwoven fabric with a constant thickness and constant density. This prefabricated nonwoven fabric is then passed through a contour device with which any relief shapes are cut out of the nonwoven fabric, milled, sawn and / or suctioned off. With this contour-imparting treatment of the nonwoven, molded parts can be produced which come close to the above-mentioned requirements.
Diese bekannten Verfahren weisen jedoch verschiedene Nachteile auf. Insbesondere werden durch die konturgebende Behandlung des Faservlieses grosse Abfallmengen erzeugt, die in der Regel nicht wieder zurückgeführt werden, da die Herstellung der Faservliese und die Herstellung der Pressformteile in voneinander unabhängigen Betrieben vorgenommen werden.However, these known methods have various disadvantages. In particular, the contouring treatment of the nonwoven fabric generates large amounts of waste which, as a rule, cannot be recycled again, since the manufacture of the nonwoven fabrics and the production of the molded parts are carried out in mutually independent factories.
Ausserdem erfordert jede neu zu formende Kontur auch eine Aenderung der Konturwerkzeuge, seien das Schneidwalzen, Kontursägen oder Fräskopfanordnungen. Diese Werkzeugänderungen sind teuer und führen dazu, dass Pressformteile nur in hohen Stückzahlen hergestellt werden und hohe Lagerbestände in Kauf genommen werden müssen.In addition, each new contour to be shaped also requires a change in the contour tools, be it cutting rollers, contour saws or milling head arrangements. These tool changes are expensive and mean that molded parts are only manufactured in large quantities and large stocks have to be accepted.
Es ist deshalb das Ziel der vorliegenden Erfindung, ein Verfahren zu schaffen, welches die Nachteile der bekannten Verfahren überwindet. Insbesondere ist es das Ziel der vorliegenden Erfindung, ein kostengünstiges und flexibles Verfahren zu schaffen, welches a priori keine Abfälle erzeugt, welches für die Herstellung verschieden gestalteter Formteile keine neuen Kontur-Werkzeuge benötigt und eine optimale Auslastung der gesamten Anlage ermöglicht.It is therefore the object of the present invention to provide a method which overcomes the disadvantages of the known ones Procedure overcomes. In particular, it is the aim of the present invention to create a cost-effective and flexible method which a priori does not generate any waste, which does not require any new contour tools for the production of differently shaped parts and which enables optimum utilization of the entire system.
Dieses Ziel wird erfindungsgemäss durch die kennzeichnenden Merkmale der Ansprüche 1 und 5 erreicht, und insbesondere dadurch, dass die Herstellung der Faservliesrohlinge und der Pressformteile in geeigneter Weise kombiniert wird. Erfindungswesentlich ist dabei eine steuerbare Ablegevorrichtung, mit welcher nicht ein gleichmässig verteiltes Faservlies erzeugt wird, sondern ein dem zu fabrizierenden Formteil entsprechend geformter Rohling abgelegt wird. Dieser reliefartig abgelegte Rohling wird ohne Zwischenlagerung vorverfestigt und kann an Ort und Stelle in seine endgültige Form gepresst werden.This aim is achieved according to the invention by the characterizing features of claims 1 and 5, and in particular by the fact that the production of the nonwoven fabric blanks and the press mold parts is combined in a suitable manner. Essential to the invention is a controllable depositing device, with which a uniformly distributed nonwoven fabric is not produced, but rather a blank which is shaped in accordance with the molded part to be manufactured is deposited. This blank, laid out in relief, is pre-consolidated without intermediate storage and can be pressed into its final shape on the spot.
Da die Zeitdauer zum Ablegen eines Formteil-Rohlings wesentlich kürzer ist als die Verweilzeit der Rohformlinge in der Heizvorrichtung, der Vorformpresse oder in der Formpresse, lassen sich mit der vorliegenden Erfindung gleichzeitig mehrere Pressen beschicken und kann damit die Fertigung der Pressformteile schneller und kostengünstiger ausgeführt werden.Since the time for depositing a molded part blank is significantly shorter than the dwell time of the preforms in the heating device, the preforming press or in the molding press, several presses can be loaded simultaneously with the present invention and the production of the molded parts can thus be carried out more quickly and cost-effectively .
In einer Weiterbildung der Erfindung ist die steuerbare Ablegevorrichtung mit einer Kontrollvorrichtung verbunden, welche die einzelnen für das Fertigungsverfahren benötigten Vorrichtungen miteinander koordiniert, um die jeweiligen Formpressen optimal auszulasten. Beispielsweise kann damit die Geschwindigkeit der zugeführten Werkstoffkomponenten und deren Zusammensetzung variiert werden, kann die Transportgeschwindigkeit und die Verweilzeit in der Heizvorrichtung oder den Fressen variiert werden.In a further development of the invention, the controllable depositing device is connected to a control device which coordinates the individual devices required for the manufacturing process in order to optimally utilize the respective molding presses. For example the speed of the supplied material components and their composition can be varied, the transport speed and the residence time in the heating device or in the feed can be varied.
Damit wird das kostenverursachende Zwischenlagern von vorgefertigten oder fertigen Vorformlingen vermieden.This avoids the costly intermediate storage of prefabricated or finished preforms.
In einer weiteren Ergänzung des erfindungsgemässen Fertigungsverfahrens werden gleichzeitig Fressen für verschiedene Formteile verwendet und wird die steuerbare Ablegevorrichtung derart gesteuert, dass für eine bestimmte Presse ein der Pressform entsprechender Formteil-Rohling abgelegt wird.In a further supplement to the manufacturing method according to the invention, seizures are simultaneously used for different molded parts and the controllable depositing device is controlled in such a way that a molded part blank corresponding to the press mold is deposited for a specific press.
Als besonders geeignet für die gezielte Beschickung der Pressen erweist sich die Verwendung eines oder mehrerer karussellartiger Transporttische. Dabei werden die Formteil-Rohlinge auf diesem karussellartigen Transporttisch abgelegt und im Takt entweder direkt für die Wärmebehandlung durch eine Heizvorrichtung geführt oder individuell zu einer für die weitere Behandlung freistehende oder frei werdende Fertigungskolonne gedreht.The use of one or more carousel-like transport tables has proven to be particularly suitable for the targeted loading of the presses. The blank blanks are placed on this carousel-like transport table and either cycled directly through a heating device for heat treatment or individually rotated to a free-standing or free-standing production column for further treatment.
Die Vorteile des erfindungsgemässen Verfahrens sind unmittelbar ersichtlich und liegen insbesondere darin, dass bei der Fertigung von für die Automobilindustrie geeigneten fibrösen Pressformteile keine Spezialwerkzeuge für die Konturierung der Formteil-Rohlinge benötigt werden und auch keine Werkstoffabfälle aus dieser Fertigungstufe anfallen.The advantages of the method according to the invention are immediately apparent and, in particular, lie in the fact that in the manufacture of fibrous press-molded parts suitable for the automotive industry, no special tools are required for contouring the blank blanks and there is no material waste from this production stage.
Die vorliegende Erfindung erlaubt eine rasche und individuelle Anfertigung von Formteil-Rohlingen und führt zu einer flexiblen und optimal auslastbaren, d.h. kostengünstig arbeitenden Fertigungsanlage. Allfällige bei der Qualitätskontrolle detektierte fehlerbehaftete Formlinge, oder Bruchstücke oder Zuschneidreste können bei der vorliegenden Erfindung ohne Mehraufwand wieder in die Einspeisevorrichtung gegeben und wieder verwendet werden.The present invention allows a quick and individual production of molded blanks and leads to one flexible and optimally utilizable, ie cost-effective manufacturing plant. Any defective moldings detected during quality control, or fragments or cutting remnants can be put back into the feed device and used again in the present invention without additional effort.
Weitere bevorzugte Merkmale der vorliegenden Erfindung ergeben sich aus der weiteren Beschreibung und insbesondere aus den vorliegenden Ansprüchen.Further preferred features of the present invention result from the further description and in particular from the present claims.
Im folgenden soll die Erfindung anhand eines Ausführungsbeispiels und mit Hilfe der beiliegenden Figur näher erläutert werden.
- Fig. 1
- zeigt eine räumliche Darstellung einer erfindungsgemässen Vorrichtung in ihrer einfachsten Ausführungsform.
- Fig. 1
- shows a spatial representation of a device according to the invention in its simplest embodiment.
Die in der Fig. 1 dargestellte Anlage 1 zur Ausführung des erfindungsgemässen Verfahrens weist eine erste Vorrichtung 2 auf. Diese Vorrichtung 2 umfasst einen Behälter 3 für die Aufnahme von geeigneten Rohmaterialien, insbesondere Faserstoffe mit vorwiegend organischen Fasern, d.h. Baumwoll-, Sisal-, Bananenfasern etc., und einen Reisswolf 4, in welchem dieses Rohmaterial den Anforderungen entsprechend fein aufgebrochen wird. Diese erste Vorrichtung 2 weist auch einen Einlass 5 auf, durch welchen den Fasern pulverförmige Bindemittel und Zusatzstoffe beigemischt werden. Dabei handelt es sich im wesentlichen um Harzverbindungen, wie sie üblicherweise verwendet werden und dem Fachmann auf diesem Gebiet hinlänglich bekannt sind. Als Zusatzstoffe können auch chitinhaltige Materialien in Frage kommen. Diese Materialien verleihen den Endprodukten ihre Eigenstabilität und sind ausserordentlich leichtgewichtig. Die Vorrichtung 2 fördert die in gewünschter Zusammensetzung gemischten Werkstoffkomponenten in einen Zuführkanal 6, welcher an seinem äusseren Ende rüsselartig bewegbar ist. Es versteht sich, dass der Reisswolf 4 mit einer verstellbaren Walze ausgerüstet ist, um die Fördermenge und Beschaffenheit des Rohmaterials einstellen zu können. Ebenso ist die erste Vorrichtung 2 mit Regelmechanismen, beispielsweise Klappen, versehen, um das gewünschte Luft-Faser-Harz-Gemisch und dessen Zuführgeschwindigkeit im Zuführkanal 6 zu regeln.The system 1 shown in FIG. 1 for carrying out the method according to the invention has a first device 2. This device 2 comprises a container 3 for holding suitable raw materials, in particular fibrous materials with predominantly organic fibers, ie cotton, sisal, banana fibers etc., and a shredder 4 in which this raw material is broken up according to the requirements. This first device 2 also has an inlet 5 through which powdered binders and additives are added to the fibers. These are essentially resin compounds of the type usually used and well known to those skilled in the art. Can be used as additives materials containing chitin are also suitable. These materials give the end products their inherent stability and are extremely lightweight. The device 2 conveys the material components mixed in the desired composition into a feed channel 6, which can be moved like a trunk at its outer end. It goes without saying that the shredder 4 is equipped with an adjustable roller in order to be able to adjust the delivery quantity and the nature of the raw material. Likewise, the first device 2 is provided with control mechanisms, for example flaps, in order to regulate the desired air-fiber-resin mixture and its feed rate in the feed channel 6.
Das rüsselartige Ende des Zuführkanals 6 wird von einem steuerbaren Arm 7 der steuerbaren Ablegevorrichtung 8 gehalten und geführt. Dieser Arm bewegt das rüsselartige Ende des Zuführkanals in vorbestimmter Weise über einer vorgegebenen Fläche der Transportvorrichtung 9, um ein fasergebirgsartiges, einer gewünschten geometrischen Verteilung entsprechendes Faserwerkstoffdepot 11, kurz einen Formteil-Rohling, zu bilden. Es versteht sich, dass die Austrittsöffnung des Zuführkanals 6 entsprechend geformt und ausgerüstet ist.The trunk-like end of the feed channel 6 is held and guided by a controllable arm 7 of the
Hilfsweise kann das zu verarbeitende Material auch in einer entsprechend dimensionierten Auffangschale deponiert werden. In einer weiterführenden Ausformung weisen diese Schalen in geeigneter Weise tiefgezogene Bodenkonturen auf.Alternatively, the material to be processed can also be deposited in an appropriately dimensioned drip tray. In a further development, these shells suitably have deep-drawn bottom contours.
Die Ablegefläche, auf welcher die Formteil-Rohlinge 11 aufgebaut werden, ist luftdurchlässig und liegt als Teil der zweiten Vorrichtung 12 über einer Ansaugvorrichtung 13, mit welcher das Fasergut in seiner abgelegten Kontur festgehalten wird.The laying surface on which the
Die in der vorliegenden Fig. 1 dargestellte Transportvorrichtung 9 umfasst im wesentlichen ein Förderband 14, mit welchem das den Rohling 11 bildende abgelegte Fasergut zu einer Heizvorrichtung 15 gebracht wird. In dieser Heizvorrichtung 15 werden die Bindemittel, insbesondere phenolische Harze, kondensiert. Diese Hitzebehandlung, d.h. Temperaturführung und Dauer, hängt wesentlich von der Zusammensetzung der verwendeten Bindemittel ab und ist dem Fachmann beispielsweise aus der EP-A-76429 bekannt. Diese Behandlung wird über eine mit der steuerbaren Ablegevorrichtung 8 gekoppelten Kontrollvorrichtung 18 gesteuert. Ueblicherweise werden die bei dieser Behandlung anfallenden Dämpfe in einem Abzug 16 aufgefangen und weggeführt.The
Die derart behandelten Formteil-Rohlinge 11 werden anschliessend einer Vorformpresse 17 zugeführt und darin mittels heissem Dampf in bekannter Weise zu einem Vorformling verdichtet, vorgeformt und fixiert.The molded
Die in der vorliegenden Fig. 1 dargestellte Fertigungsanlage 1 weist zwei Formpressen 19 auf, welche aus den Vorformlingen die gewünschten Pressformen 21 formen. Vorzugsweise weisen diese Pressen an ihrer Peripherie Schneidwerkzeuge auf, um allfällig überstehende Ränder der Formteile abzuschneiden.The production system 1 shown in the present FIG. 1 has two
In einer bevorzugten und nicht näher dargestellten Ausführungsform umfasst die Transportvorrichtung einen drehbaren Transporttisch, auf welchem mehrere Rohlinge 11 abgelegt werden können. Dieser karussellartige Transporttisch dient im wesentlichen der koordinierten Beschickung der Formpressen und ist erfindungsgemäss über die Kontrollvorrichtung 18 mit der steuerbaren Ablegevorrichtung 8 gekoppelt. Es versteht sich, dass zur optimalen Auslastung der einzelnen Pressen deren Steuerungen ebenfalls mit der Kontrollvorrichtung 18 in geeigneter Weise verbunden sind. Mit der vorliegenden Erfindung und einer entsprechend gebauten Kontrollvorrichtung 18 können problemlos mehrere Formpressen für verschieden gestaltete Pressformteile derart beschickt werden, dass weder für die Ablegevorrichtung noch für die einzelnen Pressen kostenverursachende Standzeiten entstehen.In a preferred and not shown embodiment, the transport device comprises a rotatable one Transport table on which
Weiterbildungen des erfindungsgemässen Verfahrens und der entsprechenden Vorrichtung liegen im Bereich des gewöhnlichen fachmännischen Handelns und werden hier nicht explizit aufgeführt. Nur beispielsweise soll erwähnt werden, dass zusätzliche Vorrichtungen zum Besprühen der Formteil-Rohlinge oder Nachbehandeln der Pressformteile dem Fachmann bekannt sind und auch für das vorliegende Fertigungsverfahren verwendet werden können.Further developments of the method according to the invention and the corresponding device are within the scope of ordinary professional action and are not explicitly listed here. It should only be mentioned, for example, that additional devices for spraying the molded part blanks or after-treating the molded parts are known to the person skilled in the art and can also be used for the present production method.
Claims (7)
- Method of manufacturing fibrous moulded articles (21), such as are used in automobile construction, in which suitable material components, in particular fibres, binding agents and additives are fed by means of a first device (2) into a supply conduit (6),
in which the material components supplied are deposited by means of a second device (12) for the formation of moulded article blanks (11) onto a conveying device (9),
in which the deposited moulded article blanks (11) are supplied to a heating device (15), in which these moulded article blanks (11) are subjected to a heat treatment for predrying and condensation of the binding agents, in order then to be pressed in a preforming press (17) to produce a preform, in which the preform is supplied to a moulding press (19), in which a moulded article (21) is produced from the preform,
characterized in that the material components supplied for forming relief-like moulded article blanks (11) corresponding to the moulded articles to be fabricated are deposited in a dynamic manner by a controllable deposition device (8) at desired places and in desired quantities. - Process according to claim 1, characterized in that moulded article blanks (11) for differently shaped moulded articles (21) are deposited by the controllable deposition device (8).
- Process according to claim 1, characterized in that the controllable deposition device (8) includes a control device (18), by means of which the quantity and speed of the material components supplied, the speeds of the conveying device (9), the heating device (15), the preforming press (17) and the moulding press (19) are monitored and controlled in such a manner that the moulding press is utilized to optimum capacity.
- Process according to claim 3, characterized in that reject mouldings, fragments or cutting remnants are resupplied to the first device (2).
- Apparatus for implementing the process according to claim 1, with a first device (2) for feeding suitable material components, in particular fibres, binding agents and additives, into a supply conduit (6),
with a second device (12) for depositing the material components supplied and for forming moulded article blanks (11) on a conveying device (9), which second device (12) includes a controllable deposition device (8) for dynamic deposition of the material components supplied at desired places and in desired quantities and for forming relief-like moulded article blanks (11) corresponding to the moulded articles to be fabricated,
with at least one heating device (15) for condensing the binding agents and for predrying,
with at least one preforming press (17) for pressing the blanks (11) to preforms and
with at least one moulding press (19) for producing moulded articles (21). - Device according to claim 5, characterized in that the controllable deposition device (8) is suitable for depositing moulded article blanks (11) for differently shaped moulded articles (21) and is connected to a control device (18).
- Device according to claim 6, characterized in that the conveying device (9) for depositing and passing on the moulded article blanks (11) includes at least one carousel-like conveying table.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH917/91 | 1991-03-26 | ||
| CH917/91A CH683406A5 (en) | 1991-03-26 | 1991-03-26 | Method and apparatus for producing a fibrous molding. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0507731A1 EP0507731A1 (en) | 1992-10-07 |
| EP0507731B1 true EP0507731B1 (en) | 1994-12-14 |
Family
ID=4198181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92810208A Expired - Lifetime EP0507731B1 (en) | 1991-03-26 | 1992-03-23 | Method and apparatus for manufacturing a fibrous moulded article |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5215696A (en) |
| EP (1) | EP0507731B1 (en) |
| JP (1) | JPH05169478A (en) |
| BR (1) | BR9201041A (en) |
| CA (1) | CA2063966A1 (en) |
| CH (1) | CH683406A5 (en) |
| DE (1) | DE59200932D1 (en) |
| ES (1) | ES2065769T3 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5935509A (en) * | 1998-03-24 | 1999-08-10 | Cambridge Industries, Inc. | Process for manufacturing fiber preforms and an apparatus for the process |
| EP1606100A2 (en) * | 2003-03-12 | 2005-12-21 | Collins & Aikman Products Co. | Improved methods of forming vehicle interior components which include a decoupler layer |
| WO2004080763A2 (en) * | 2003-03-12 | 2004-09-23 | Collins & Aikman Products Co. | Rotary apparatus for forming decouplers for vehicle interior components |
| JP2006523573A (en) * | 2003-03-12 | 2006-10-19 | コリンズ・アンド・アイクマン・プロダクツ・コーポレーション | Improved method of forming a decoupler for a vehicle interior component |
| US20070151658A1 (en) * | 2004-03-12 | 2007-07-05 | Surendra Khambete | Contoured mold for forming decouplers for attenuating sound in a vehicle |
| EP1908574A1 (en) * | 2006-10-05 | 2008-04-09 | Novameer B.V. | Method for producing self-reinforced polymeric three-dimensional products |
| WO2018222042A1 (en) | 2017-06-02 | 2018-12-06 | Huhtamaki Molded Fiber Technology B.V. | Method for manufacturing a 3-dimensional shaped product from a fluff pulp material and such product |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2759837A (en) * | 1952-10-13 | 1956-08-21 | Weyerhaeuser Timber Co | Process of forming molded cellulose products |
| FR2206700A5 (en) * | 1972-11-10 | 1974-06-07 | Gudin Michel | |
| US4038531A (en) * | 1976-05-18 | 1977-07-26 | Weyerhaeuser Company | Process control apparatus for controlling a particleboard manufacturing system |
| US4379101A (en) * | 1980-06-04 | 1983-04-05 | Allen Industries, Inc. | Forming apparatus and method |
| DE3170270D1 (en) * | 1981-07-04 | 1985-06-05 | Schenck Ag Carl | Method and apparatus for controlling the density distribution of a dispersed particle mat |
| DE3139267A1 (en) * | 1981-10-02 | 1983-04-21 | Johann Borgers Gmbh & Co Kg, 4290 Bocholt | METHOD FOR THE PRODUCTION OF LOW-ODOR, FABRIC FABRICS FASTENED WITH PHENOL RESIN |
| DE3208963C2 (en) * | 1982-03-12 | 1985-06-27 | Deutsche Fibrit Gesellschaft Ebers & Dr. Müller mbH, 4150 Krefeld | Dry process for the production of strongly contoured preforms from defibrated, glued wood fibers |
| FR2529917A1 (en) * | 1982-07-06 | 1984-01-13 | Saint Gobain Isover | METHOD AND DEVICE FOR THE FORMATION OF FIBER FIBER CONTAINING AN ADDITIONAL PRODUCT |
| DE3468365D1 (en) * | 1984-04-16 | 1988-02-11 | Baehre & Greten | Method of and apparatus for obtaining a predetermined weight per unit area in a first fibre layer |
| CA1236813A (en) * | 1984-04-16 | 1988-05-17 | Wolfgang Heller | Method of and apparatus for obtaining a predeterminable distribution of weight in the transverse direction of a pre-mat and/or mat |
| JPH0784002B2 (en) * | 1985-12-09 | 1995-09-13 | トヨタ自動車株式会社 | Wood-based molding |
| KR900003785B1 (en) * | 1986-10-12 | 1990-05-31 | 가부시기가이샤 다이와 | Bagging process and apparatus for using car mat |
| US4904517A (en) * | 1987-11-27 | 1990-02-27 | Macmillan Bloedel Research | Ribbed waferboard product |
| ES2037181T3 (en) * | 1988-11-05 | 1993-06-16 | Werzalit Ag + Co. | LONGITUDINALLY EXTENDED COATING PROFILE, DEVICE AND PROCEDURE FOR ITS MANUFACTURE. |
| US5034181A (en) * | 1989-09-27 | 1991-07-23 | Process First, Inc. | Apparatus for and method of manufacturing preforms |
| WO1991012944A1 (en) * | 1990-02-23 | 1991-09-05 | Wellman Machinery Of Michigan | Apparatus and method for applying preform fibers |
| US5093059A (en) * | 1991-01-18 | 1992-03-03 | Shell Oil Company | Method for the transport of a homogeneous mixture of chopped fibers |
-
1991
- 1991-03-26 CH CH917/91A patent/CH683406A5/en not_active IP Right Cessation
-
1992
- 1992-03-23 ES ES92810208T patent/ES2065769T3/en not_active Expired - Lifetime
- 1992-03-23 DE DE59200932T patent/DE59200932D1/en not_active Expired - Fee Related
- 1992-03-23 EP EP92810208A patent/EP0507731B1/en not_active Expired - Lifetime
- 1992-03-25 BR BR929201041A patent/BR9201041A/en not_active Application Discontinuation
- 1992-03-25 CA CA002063966A patent/CA2063966A1/en not_active Abandoned
- 1992-03-26 JP JP4068608A patent/JPH05169478A/en active Pending
- 1992-03-26 US US07/857,961 patent/US5215696A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ES2065769T3 (en) | 1995-02-16 |
| DE59200932D1 (en) | 1995-01-26 |
| JPH05169478A (en) | 1993-07-09 |
| CH683406A5 (en) | 1994-03-15 |
| BR9201041A (en) | 1992-11-24 |
| CA2063966A1 (en) | 1992-09-27 |
| EP0507731A1 (en) | 1992-10-07 |
| US5215696A (en) | 1993-06-01 |
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