EP0836552A1 - Process and device for constituting a reinforcement from fibre-reinforced plastic parts and reinforcement obtained according to this process - Google Patents

Process and device for constituting a reinforcement from fibre-reinforced plastic parts and reinforcement obtained according to this process

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Publication number
EP0836552A1
EP0836552A1 EP96918575A EP96918575A EP0836552A1 EP 0836552 A1 EP0836552 A1 EP 0836552A1 EP 96918575 A EP96918575 A EP 96918575A EP 96918575 A EP96918575 A EP 96918575A EP 0836552 A1 EP0836552 A1 EP 0836552A1
Authority
EP
European Patent Office
Prior art keywords
reinforcement
rods
reinforced plastic
fiber
casting mold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP96918575A
Other languages
German (de)
French (fr)
Inventor
Edgar GRÜNINGER
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.)
Fibresta Produkte AG
Original Assignee
Fibresta Produkte AG
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Filing date
Publication date
Application filed by Fibresta Produkte AG filed Critical Fibresta Produkte AG
Publication of EP0836552A1 publication Critical patent/EP0836552A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/26—Non-fibrous reinforcements only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D28/00—Producing nets or the like, e.g. meshes, lattices
    • B29D28/005—Reticulated structure comprising reinforcements of substantial or continuous length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/10—Cords, strands or rovings, e.g. oriented cords, strands or rovings
    • B29K2105/101—Oriented
    • B29K2105/108—Oriented arranged in parallel planes and crossing at substantial angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/20—Inserts
    • B29K2105/206—Meshes, lattices or nets

Definitions

  • Highly stressed plastic parts are used to increase their strength with fibers or fibrous materials, e.g. Glass fibers, carbon fibers or textile fibers reinforced.
  • the hand laying process (laminating process) is known and very versatile.
  • resin-impregnated fibers in the form of mats, fabrics, nonwovens or tapes etc. are overlapped on a negative mold and cured.
  • this method is very labor intensive and costly.
  • the present invention has for its object to provide a method for producing a reinforcement, a reinforcement and a fiber-reinforced plastic to create a product that combines the advantages of the aforementioned processes, reinforcements and products. This object is achieved by the combinations of features of the claims.
  • 1 is a plan view of a gauge with reinforcing bars
  • FIG. 1 and 2 show the production of a reinforcement grid 1 for a grating.
  • a teaching 2 consisting, for example, of a flat plate 3 and pins 4 projecting vertically thereon, a first layer 5 of fiber-reinforced plastic rods is provided 6 laid.
  • the rods 6 are positioned by the pins 4, are parallel to one another and have a regular spacing from one another.
  • the rods 6 have a high fiber content of over 60% of e.g. Fiberglass.
  • the rods 6 are preferably produced by pulling glass fiber rows through a bath of liquid, U-V-active synthetic resin and then through several, constantly narrowing perforated screens, in which the superfluous synthetic resin is stripped off and the fibers are optimally wetted. After the last aperture, the strand is exposed to strong UV light so that the synthetic resin hardens. After a take-off device, the continuously drawn, finished, glass-fiber-reinforced plastic rod is cut to the desired length by means of a cutting device. Because the glass fibers are under tension during the hardening of the synthetic resin, the unidirectionally oriented fibers in the finished rod 6 are exactly straight and biased. This ensures a very high level of strength and rigidity. A glass fiber content of around 73% can be achieved with this process.
  • a second layer 7 of bars 6 is placed crosswise, which are also positioned by pins 4, are oriented perpendicular to the bars 6 of the first layer and are also at a regular distance from one another.
  • a third layer 8, which is congruent with the first layer 5, is applied to the second layer 7 and placed on top of this a fourth layer 9 of rods 6, which is congruent with the second layer 7.
  • the number of layers to be laid depends on the bar diameter and the thickness of the grating to be produced.
  • Several thin rods can also be placed next to each other per layer and web, or the rods 6 can have a rectangular cross section. This can improve the connection at the crossing points.
  • the above process can be automated in that the rods 6 are inserted mechanically into the gauge and the dripping of synthetic resin is carried out by means of a carriage which can be shifted via the gauge with a series of valve-controlled outlet openings for the synthetic resin.
  • a frame 17, which determines the outer shape of the grating to be produced, is clamped onto a horizontal, flat table 15 of a casting station 16 which is movable in the longitudinal direction.
  • a measured amount of liquid synthetic resin is filled into the frame 17 in accordance with the resin volume of the grating to be produced.
  • the reinforcement grid 1 is then inserted into the frame 17.
  • the table 15 is moved under a shaped element 18.
  • the shaped element 18 consists of a welded grid made of square steel tubes 19.
  • tubes 19 rectangular, prismatic, hollow GRP molded bodies 22 are held by tubes 25 with rubber suction cups 23 at regular intervals in accordance with the grid dimension of the reinforcement grid 1 and precisely positioned, for. B. by linear contact with attached to the tubes 25 fins 26 (Fig. 4).
  • the moldings have a smooth inner wall and a bottom 24 and serve as form-giving formwork which is made from the same synthetic resin and glass rowing using a steel press mold under the action of heat.
  • the polymerization is then carried out by the accelerators and hardeners added to the liquid synthetic resin.
  • the rubber suction cups 23 are loosened, so that the shaped element 18 is lifted off the table 15 by means of a cylinder unit 30 and the grating with the permanently connected formwork and reinforcing grating 1 enclosed therebetween is removed from the frame 17.
  • the demolding can take place before the synthetic resin has fully hardened.
  • the grate is placed on a flat surface. To accelerate this hardener, the pad can pass through an oven. After complete curing, the upper and lower sides of the grate are ground flat.
  • the reinforcement is manufactured as a complete semi-finished product regardless of the casting process and can be stored temporarily. As a result, both the casting station and the device for producing the reinforcement can be optimally utilized.
  • the shaped bodies 22 are prismatic. As a result, the side walls of the grate bars are parallel. The grids can therefore be used equally on both sides.
  • the mold can be removed shortly after the resin has gelled. The complete polymerization takes place outside the mold, which enables a high work rate. According to the described process, grates (structural panels) that are closed on one side can be produced with the same system.
  • Different patterns can be created by coloring the formwork and the filling resin differently.
  • the edges of the grate webs are reinforced by the fiber-reinforced molded body 22. This increases the impact resistance.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

Several layers of unidirectionally fibre-reinforced plastic rods (6) are superimposed crosswise in a template and bound at their crossing points to form a reinforcement grating (1). The grating is introduced together with liquid artificial resin into a casting mould (15, 17). A moulding element (18) with hollow moulding bodies (22) is lowered into the casting mould (15, 17). Each moulding body (22) enters an opening of the grating (1), displacing the artificial resin. When the artificial resin is set, the moulding bodies (22) are detached from the rubber suction cups (23) by pressure compensation, the moulding element (18) is lifted and the finished grating is removed from the mould (15, 17). The moulding bodies remain as lost moulds undetachably joined to the grating. The protruding moulding elements are ground off. This process allows highly resistant gratings to be produced. The prefabricated reinforcement (1) is also suitable for reinforcing other plastic products.

Description

VERFAHREN, VORRICHTUNG UND ARMIERUNG VON FASERARMIERTEN METHOD, DEVICE AND ARMORING OF FIBER ARMORED
KUNSTSTOFFTEILENPLASTIC PARTS
Hochbelastete Kunststoffteile werden zur Erhöhung ihrer Festigkeit mit Fasern oder faserartigen Stoffen, z.B. Glasfasern, Kohlfasern oder Textilfasern armiert.Highly stressed plastic parts are used to increase their strength with fibers or fibrous materials, e.g. Glass fibers, carbon fibers or textile fibers reinforced.
Bekannt sind die Verfahren zur Herstellung von Rohren und Profilen nach dem Wickel-, Schleuder- oder Ziehverfahren.The processes for the production of pipes and profiles by the winding, centrifugal or drawing processes are known.
Für kleinere Stückzahlen, aber auch für sehr komplizierte Teile ist das Handauflegeverfahren (Laminierverfahren) bekannt und sehr vielseitig. Bei diesem Verfahren werden harzgetränkte Fasern in Form von Matten, Geweben, Vliesen oder Bändern etc. überlappend auf eine Negativform aufgelegt und ausgehärtet. Diese Methode ist aber sehr arbeitsintensiv und kostspielig.For smaller quantities, but also for very complicated parts, the hand laying process (laminating process) is known and very versatile. In this process, resin-impregnated fibers in the form of mats, fabrics, nonwovens or tapes etc. are overlapped on a negative mold and cured. However, this method is very labor intensive and costly.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung einer Armierung, eine Armierung sowie ein faserarmiertes Kunststoff- produkt zu schaffen, welche die Vorteile der zuvor erwähnten Verfahren, Armierungen und Produkte in sich vereinigen. Diese Aufgabe wird durch die Merkmalskombinationen der Ansprüche gelöst.The present invention has for its object to provide a method for producing a reinforcement, a reinforcement and a fiber-reinforced plastic to create a product that combines the advantages of the aforementioned processes, reinforcements and products. This object is achieved by the combinations of features of the claims.
Nachfolgend werden Ausführungsbeispiele der Erfindung anhand der Zeichnung erläutert. Darin zeigen:Exemplary embodiments of the invention are explained below with reference to the drawing. In it show:
Fig. 1 einen Grundriss einer Lehre mit Armierungsstäben,1 is a plan view of a gauge with reinforcing bars,
Fig. 2 einen Querschnitt durch eine Armierung,2 shows a cross section through a reinforcement,
Fig. 3 eine Vorrichtung zur Herstellung von Gitterrosten,3 shows a device for producing gratings,
Fig. 4 einen Querschnitt durch einen Formkörper,4 shows a cross section through a molded body,
Fig. 1 und 2 zeigen die Herstellung eines Armierungsgitters 1 für einen Gitterrost. In einer Lehre 2 bestehend z.B. aus einer ebenen Platte 3 und darauf senkrecht abstehenden Stiften 4 wird eine erste Schicht 5 von faserarmierten Kunststoffstäben 6 gelegt. Die Stäbe 6 werden durch die Stifte 4 positioniert, sind parallel zueinander und haben voneinander einen regelmässigen Abstand.1 and 2 show the production of a reinforcement grid 1 for a grating. In a teaching 2 consisting, for example, of a flat plate 3 and pins 4 projecting vertically thereon, a first layer 5 of fiber-reinforced plastic rods is provided 6 laid. The rods 6 are positioned by the pins 4, are parallel to one another and have a regular spacing from one another.
Die Stäbe 6 haben einen hohen Faseranteil von über 60 % von z.B. Glasfasern. Die Stäbe 6 werden vorzugsweise dadurch hergestellt, dass Glasfaserrowings durch ein Bad von flüssigem, U-V-aktivem Kunstharz und anschliessend durch mehrere, stetig verengte Lochblenden gezogen werden, in welchen der überflüssige Kunstharz abgestreift wird und die Fasern otimal benetzt werden. Nach der letzten Blende wird der Strang starkem U-V-Licht ausgesetzt, so dass der Kunstharz aushärtet. Hinter einer Abzugsvorrichtung wird der kontinuierlich abgezogene, fertige, glas¬ faserarmierte Kunststoff stab mittels einer Abschneidevorrichtung auf die gewünschte Länge abgelängt. Weil die Glasfasern während der Aushärtung des Kunstharzes unter Spannung sind, sind die unidirektional orientierten Fasern im fertigen Stab 6 genau geradlinig und vorgespannt. Dadurch wird eine sehr hohe Festigkeit und Steifikgkeit erreicht. Mit diesem Verfahren kann ein Glasfaseranteil von etwa 73 % erreicht werden.The rods 6 have a high fiber content of over 60% of e.g. Fiberglass. The rods 6 are preferably produced by pulling glass fiber rows through a bath of liquid, U-V-active synthetic resin and then through several, constantly narrowing perforated screens, in which the superfluous synthetic resin is stripped off and the fibers are optimally wetted. After the last aperture, the strand is exposed to strong UV light so that the synthetic resin hardens. After a take-off device, the continuously drawn, finished, glass-fiber-reinforced plastic rod is cut to the desired length by means of a cutting device. Because the glass fibers are under tension during the hardening of the synthetic resin, the unidirectionally oriented fibers in the finished rod 6 are exactly straight and biased. This ensures a very high level of strength and rigidity. A glass fiber content of around 73% can be achieved with this process.
Auf dieser Schicht 5 wird kreuzweise eine zweite Schicht 7 von Stäben 6 gelegt, die ebenfalls durch Stifte 4 positioniert, senkrecht zu den Stäben 6 der ersten Schicht orientiert sind und ebenfalls einen regelmässigen Abstand voneinander haben. Auf die zweite Schicht 7 wird eine zur ersten Schicht 5 deckungsgleiche dritte Schicht 8 und auf diese eine zur zweiten Schicht 7 deckungsgleiche vierte Schicht 9 von Stäben 6 gelegt. Die Anzahl der zu legenden Schichten richtet sich nach dem Stabdurchmesser und der Dicke des herzustellenden Gitterrostes. Pro Schicht und Steg können auch mehrere dünne Stäbe nebeneinandergelegt werden oder die Stäbe 6 können einen rechteckigen Querschnitt haben. Dadurch kann die Verbindung an den Kreuzungspunkten verbessert werden.On this layer 5 a second layer 7 of bars 6 is placed crosswise, which are also positioned by pins 4, are oriented perpendicular to the bars 6 of the first layer and are also at a regular distance from one another. A third layer 8, which is congruent with the first layer 5, is applied to the second layer 7 and placed on top of this a fourth layer 9 of rods 6, which is congruent with the second layer 7. The number of layers to be laid depends on the bar diameter and the thickness of the grating to be produced. Several thin rods can also be placed next to each other per layer and web, or the rods 6 can have a rectangular cross section. This can improve the connection at the crossing points.
An sämtlichen Kreuzungspunkten der Stäbe 6 wird etwas flüssiger Kunstharz 9 z.B. durch Auftropfen angebracht und z.B. mit U-V-Bestrahlung ausgehärtet. Nun kann das fertige Armierungsgitter 1 aus de Lehre 2 entnommen werden.At all points of intersection of the rods 6, some liquid synthetic resin 9 is e.g. applied by dripping and e.g. cured with UV radiation. Now the finished reinforcement grid 1 can be removed from de teaching 2.
Der obige Vorgang kann automatisiert werden, indem die Stäbe 6 maschinell in die Lehre eingelegt werden und das Auftropfen von Kunstharz mittels eines über die Lehre programmgesteuert verschiebbaren Wagens mit einer Reihe von ventilgesteuerten Auslassöffnungen für das Kunstharz erfolgt.The above process can be automated in that the rods 6 are inserted mechanically into the gauge and the dripping of synthetic resin is carried out by means of a carriage which can be shifted via the gauge with a series of valve-controlled outlet openings for the synthetic resin.
Auf einen in Längsrichtung beweglichen, horizontalen, ebenen Tisch 15 einer Giesstation 16 ist ein Rahmen 17 aufgespannt, der die Aussenform des herzustellenden Gitterrostes bestimmt. In den Rahmen 17 wird eine abgemessene Menge flüssigen Kunstharzes entsprechend dem Harzvolumen des herzustellenden Gitterrostes eingefüllt. Hierauf wird das Armierungsgitter 1 in den Rahmen 17 eingelegt. Der Tisch 15 wird unter ein Formelement 18 verschoben. Das Formelement 18 besteht aus einem verschweissten Gitter aus Vierkant-Stahlrohren 19.A frame 17, which determines the outer shape of the grating to be produced, is clamped onto a horizontal, flat table 15 of a casting station 16 which is movable in the longitudinal direction. A measured amount of liquid synthetic resin is filled into the frame 17 in accordance with the resin volume of the grating to be produced. The reinforcement grid 1 is then inserted into the frame 17. The table 15 is moved under a shaped element 18. The shaped element 18 consists of a welded grid made of square steel tubes 19.
Auf den Rohren 19 sind in regelmässigen Abständen entsprechend dem Rastermass des Armierungsgitters 1 im Querschnitt rechteckige, prismatische, hohle GFK-Form- körper 22 durch Rohre 25 mit Gummisaugnäpfen 23 gehalten und genau positioniert, z. B. durch linienformigen Kontakt mit an den Rohren 25 angebrachten Rippen 26 (Fig. 4).On the tubes 19, rectangular, prismatic, hollow GRP molded bodies 22 are held by tubes 25 with rubber suction cups 23 at regular intervals in accordance with the grid dimension of the reinforcement grid 1 and precisely positioned, for. B. by linear contact with attached to the tubes 25 fins 26 (Fig. 4).
Die Formkörper haben eine glatte Innenwand und einen Boden 24 und dienen als formgebende Schalung welche aus dem gleichen Kunstharz und Glasrowing hergestellt wird mit Hilfe einer Stahl pressform unter Einwirkung von Wärme. The moldings have a smooth inner wall and a bottom 24 and serve as form-giving formwork which is made from the same synthetic resin and glass rowing using a steel press mold under the action of heat.
Durch die den flüssigen Kunstharz zugesetzten Beschleuniger und Härter erfolgt anschliessend die Polymerisation. Nach dem teilweisen Aushärten des Kunstharzes werden die Gummisaugnäpfen 23 gelöst, so dass das Formelement 18 mittels eines Zylinderaggregates 30 vom Tisch 15 abgehoben und der Gitterrost mit der unlösbar verbundenen Schalung und dazwischen eingeschlossenen Armierungsgitter 1 aus dem Rahmen 17 entfernt.The polymerization is then carried out by the accelerators and hardeners added to the liquid synthetic resin. After the synthetic resin has partially hardened, the rubber suction cups 23 are loosened, so that the shaped element 18 is lifted off the table 15 by means of a cylinder unit 30 and the grating with the permanently connected formwork and reinforcing grating 1 enclosed therebetween is removed from the frame 17.
Wegen der im Gitterrost verbleibenden Schalung 22 kann die Entformung bereits erfolgen, bevor der Kunstharz vollständig ausgehärtet ist. Zur vollständigen Aushärtung wird der Rost auf eine flache Unterlage gelegt. Zum Beschleunigen, dieses Aushärters kann die Unterlage einen Ofen durchlaufen. Nach der vollständigen Aushärtung, wird die obere und untere Seite des Rostes plangeschliffen. Because of the formwork 22 remaining in the grating, the demolding can take place before the synthetic resin has fully hardened. For complete curing, the grate is placed on a flat surface. To accelerate this hardener, the pad can pass through an oven. After complete curing, the upper and lower sides of the grate are ground flat.
Die mit dem beschriebenen Verfahren hergestellten Gitterroste haben gegenüber bekannten Rosten erhebliche Vorteile:The gratings produced with the described method have considerable advantages over known gratings:
• Die Glasfasern sind gerichtet, gebündelt und vorgespannt und in diesem Zustand mit Kunststoff fixiert, was eine sehr hohe und konstante Festigkeit ergibt.• The glass fibers are straightened, bundled and tempered and fixed in this state with plastic, which results in a very high and constant strength.
• Die Armierung wird unabhängig vom Giessvorgang als komplettes Halbfabrikat hergestellt und kann zwischengelagert werden. Dadurch können sowohl die Giessstation als auch die Vorrichtung zur Herstellung der Armierung optimal ausgelastet werden.• The reinforcement is manufactured as a complete semi-finished product regardless of the casting process and can be stored temporarily. As a result, both the casting station and the device for producing the reinforcement can be optimally utilized.
• Durch die genaue Herstellung der Armierung in einer Lehre werden beim Giessen in der Form alle Armierungsstäbe mit flüssigem Kunstharz umgeben. Somit sind keine Glasfasern an der Oberfläche sichtbar.• Due to the precise manufacture of the reinforcement in a jig, all reinforcing bars are surrounded with liquid synthetic resin when casting in the mold. This means that no glass fibers are visible on the surface.
• Durch die Art des Giessvorgangs (Senken und Heben des Formelementes 18 relativ zum Tisch 15) wird der flüssige Kunstharz von unten durch die Armierung gedrückt und die Luft ausgestossen.• Due to the nature of the casting process (lowering and lifting the shaped element 18 relative to the table 15), the liquid synthetic resin is pressed through the reinforcement from below and the air is expelled.
• Die Formkörper 22 sind prismatisch. Dadurch sind die Seitenwände der Roststege parallel. Die Roste können somit auf beiden Seiten gleich verwendet werden.• The shaped bodies 22 are prismatic. As a result, the side walls of the grate bars are parallel. The grids can therefore be used equally on both sides.
• Durch die verlorene Form kann der Rost sehr leicht entnommen werden.• Due to the lost shape, the rust can be removed very easily.
• Das Entformen kann schon kurz nach dem Gelieren des Kunstharzes erfolgen. Das vollständige Polymerisieren erfolgt ausserhalb der Form, was einen hohen Arbeitsakt ermöglicht. Nach dem beschriebenen Verfahren können einseitig geschlossene Roste (Strukturplatten) mit der gleichen Anlage hergestellt werden.• The mold can be removed shortly after the resin has gelled. The complete polymerization takes place outside the mold, which enables a high work rate. According to the described process, grates (structural panels) that are closed on one side can be produced with the same system.
Durch das unterschiedliche einfärben der Schalung und des Füllharzes können verschiedene Muster erzeugt werden.Different patterns can be created by coloring the formwork and the filling resin differently.
Durch die faserarmierten Formkörper 22 sind die Kanten der Roststege verstärkt. Dadurch wird die Schlagfestigkeit erhöht. The edges of the grate webs are reinforced by the fiber-reinforced molded body 22. This increases the impact resistance.

Claims

PATENTANSPRÜCHE PATENT CLAIMS
1. Verfahren zur Herstellung einer Armierung für ein faserarmiertes Kunststoff¬ produkt, umfassend die folgenden Schritte:1. A method for producing a reinforcement for a fiber-reinforced plastic product, comprising the following steps:
• in einer Lehre (2) wird eine erste Schicht (5) von im wesentlichen parallel zueinander orientierten, unidirektional faserverstärkten Kunststoffstäben (6) gelegt;• in a gauge (2), a first layer (5) of essentially parallel, unidirectionally fiber-reinforced plastic rods (6) is laid;
• auf die erste Schicht (5) wird eine zweite Schicht (7) von unidirektional faserverstärkten Kunststoffstäben (6) gelegt, wobei sich die Stäbe (6) der ersten und zweiten Schicht (5,7) kreuzen;• a second layer (7) of unidirectionally fiber-reinforced plastic rods (6) is placed on the first layer (5), the rods (6) of the first and second layers (5, 7) crossing;
• die Stäbe (6) der ersten und zweiten Schicht (5,7) werden miteinander verbunden; und• the rods (6) of the first and second layers (5,7) are connected to each other; and
• die fertige Armierung (1) wird aus der Lehre (2) entnommen.• The finished reinforcement (1) is taken from the gauge (2).
2. Armierung für ein faserarmiertes Kunststoffprodukt, bestehend aus mindestens zwei Schichten (5,7) von faserarmierten Kunststoffstäben (6), welche die Stäbe (6) mindestens einer unmittelbar benachbarten Schicht (5,7) kreuzen, wobei die Stäbe (6) aller Schichten (5,7) miteinander verbunden sind. 2. Reinforcement for a fiber-reinforced plastic product, consisting of at least two layers (5,7) of fiber-reinforced plastic rods (6), which cross the rods (6) of at least one immediately adjacent layer (5,7), the rods (6) all Layers (5,7) are interconnected.
3. Gitterrost, enthaltend eine Armierung (1) nach Anspruch 2, wobei die Stäbe (6) in jeder Schicht (5,7,8,9) einen gleichmässigen Abstand voneinander haben und pro Stabrichtung mindestens zwei Schichten (5,8;7,9) vorhanden sind, und wobei die übereinander liegenden, zueinander parallelen Stäbe (6) in je einem Kunststoffsteg eingegossen sind.3. Grid containing a reinforcement (1) according to claim 2, wherein the bars (6) in each layer (5,7,8,9) are evenly spaced from each other and at least two layers (5,8; 7, 9) are present, and the superposed, mutually parallel rods (6) are each cast in a plastic web.
4. Verfahren zur Herstellung eines faserarmierten Kunststoff-Gitterrostes nach Anspruch 3, umfassend die folgenden Schritte:4. A method for producing a fiber-reinforced plastic grating according to claim 3, comprising the following steps:
• Herstellung eines Armierungsgitters (1) aus kreuzweise übereinandergelegten und aneinander gehefteten, faserverstärkten Kunststoffstäben (6);• Production of a reinforcement grid (1) from fiber-reinforced plastic rods (6), which are laid crosswise one above the other and attached to one another;
• Einbringen von flüssigem Kunstharz in eine Giessform (15,17) bestehend aus einer flachen Platte (15) und einem auf der Platte aufliegenden Rahmen (17);• Introducing liquid synthetic resin into a casting mold (15, 17) consisting of a flat plate (15) and a frame (17) resting on the plate;
• Einbringen des Armierungsgitters (1) in die Giessform (15,17); • inserting the reinforcement grid (1) into the casting mold (15, 17);
• Absenken eines Formelementes (18) mit einer Vielzahl von hohlen Formkörpern (22) aus glasverstärktem Polyesterharz relativ zur Giessform (15,17), wobei in jedes Feld des Armierungsgitters (1 ) einer der Formkörper (22) eintaucht;• lowering a shaped element (18) with a plurality of hollow shaped bodies (22) made of glass-reinforced polyester resin relative to the casting mold (15, 17), one of the shaped bodies (22) being immersed in each field of the reinforcement grid (1);
• Aushärten des Kunstharzes;• curing of the synthetic resin;
• lösen des Formelementes (18) von den Formkörpern (22); • detach the shaped element (18) from the shaped bodies (22);
• Anheben des Formelementes (18) relativ zur Giessform (15,17); und • lifting the shaped element (18) relative to the casting mold (15, 17); and
• Entnehmen des Gitterrostes aus der Giessform (15,17). • Remove the grate from the mold (15, 17).
5. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 4, umfassend:5. An apparatus for performing the method of claim 4, comprising:
• eine Giessform (15,17) bestehend aus einer Platte (15) und einem Rahmen (17);• a casting mold (15, 17) consisting of a plate (15) and a frame (17);
• ein relativ zur Giessform (15,17) in Höhenrichtung bewegliches Formelement (18), an welchem in einem regelmässigen Raster nach unten ragende, hohle Form¬ körper (22) mit lösbaren Halteelementen(25) befestigt sind;• a mold element (18) which is movable in the vertical direction relative to the casting mold (15, 17) and to which hollow moldings (22) which protrude downwards in a regular grid are fastened with releasable holding elements (25);
• Zentrierelemente (31,32), welche das Formelement (18) relativ zur Giessform (15,17) positionieren; und• centering elements (31, 32) which position the shaped element (18) relative to the casting mold (15, 17); and
• Antriebsmittel (30) zum Absenken und Anheben des Formelementes (22) relativ zur Giessform (15,17).• Drive means (30) for lowering and raising the shaped element (22) relative to the casting mold (15, 17).
6. Vorrichtung nach Anspruch 5, wobei die Formkörper (22) einen ebenen Boden (24) und eine Wand haben, die aussen annähernd prismatisch oder zylindrisch und innen annähernd prismatisch oder zylindrisch ist.6. The device according to claim 5, wherein the shaped bodies (22) have a flat bottom (24) and a wall which is approximately prismatic or cylindrical on the outside and approximately prismatic or cylindrical on the inside.
7. Vorrichtung nach Anspruch 5 oder 6, wobei in den Innenraum der Formkörper (22) ein starrer Stützkörper (25) mit einem Saugnapf bis an den Boden (24) eingesetzt ist, der die Wand linienformig stützt und den Formkörper (22) genau positioniert. 7. The device according to claim 5 or 6, wherein in the interior of the molded body (22), a rigid support body (25) with a suction cup is used up to the bottom (24), which supports the wall in a line shape and precisely positions the molded body (22) .
EP96918575A 1995-07-03 1996-07-03 Process and device for constituting a reinforcement from fibre-reinforced plastic parts and reinforcement obtained according to this process Withdrawn EP0836552A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH1940/95 1995-07-03
CH194095 1995-07-03
PCT/CH1996/000244 WO1997002131A1 (en) 1995-07-03 1996-07-03 Process and device for constituting a reinforcement from fibre-reinforced plastic parts and reinforcement obtained according to this process

Publications (1)

Publication Number Publication Date
EP0836552A1 true EP0836552A1 (en) 1998-04-22

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EP96918575A Withdrawn EP0836552A1 (en) 1995-07-03 1996-07-03 Process and device for constituting a reinforcement from fibre-reinforced plastic parts and reinforcement obtained according to this process

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AU (1) AU6120396A (en)
WO (1) WO1997002131A1 (en)

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US7470094B2 (en) * 2005-11-10 2008-12-30 Gse Lining Technology, Inc. Geonet for a geocomposite
GB201215124D0 (en) * 2012-08-24 2012-10-10 Newton John R A method of making a composite structure
CN106182503A (en) * 2016-07-18 2016-12-07 南通汇泽新材料有限公司 A kind of glass fiber reinforced plastic grating forming mold
EP3802077A1 (en) * 2018-06-04 2021-04-14 Conseil et Technique Method for manufacturing a part made from composite material
FR3081760B1 (en) * 2018-06-04 2021-10-22 Conseil & Technique METHOD OF MANUFACTURING A PART IN COMPOSITE MATERIAL
CN115256796B (en) * 2022-09-27 2022-12-09 四川纤谷塑业有限公司 Forming process of basalt fiber composite material

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AU6120396A (en) 1997-02-05

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