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EP0139879A1 - Method for the chipless cutting of boards of foamed plastic and apparatus for performing the method - Google Patents

Method for the chipless cutting of boards of foamed plastic and apparatus for performing the method Download PDF

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Publication number
EP0139879A1
EP0139879A1 EP84108580A EP84108580A EP0139879A1 EP 0139879 A1 EP0139879 A1 EP 0139879A1 EP 84108580 A EP84108580 A EP 84108580A EP 84108580 A EP84108580 A EP 84108580A EP 0139879 A1 EP0139879 A1 EP 0139879A1
Authority
EP
European Patent Office
Prior art keywords
cutting
foam
cutting tool
knife
movement
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.)
Granted
Application number
EP84108580A
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German (de)
French (fr)
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EP0139879B1 (en
Inventor
Sven Dahl-Hansen
Erik Sylvest
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.)
Icopal GmbH
Original Assignee
Icopal GmbH
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
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Priority to AT84108580T priority Critical patent/ATE22409T1/en
Publication of EP0139879A1 publication Critical patent/EP0139879A1/en
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Publication of EP0139879B1 publication Critical patent/EP0139879B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/045—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member for thin material, e.g. for sheets, strips or the like

Definitions

  • the invention relates to a method for the non-cutting cutting of plates made of foam with elastic, meltable cell walls, in particular made of polyurethane foam, by means of a cutting tool having straight cutting edges moved through the foam.
  • the object underlying the invention was to develop a method of the type mentioned in such a way that it can be carried out with simple devices, clean and straight cuts being obtained and a plurality of cuts being able to be produced in a simple manner.
  • the method according to the invention is based on the knowledge that an excellent cut is obtained when a cutting tool with a straight cutting edge is moved through the foam in such a way that an optimal ratio between the pressure exerted in the direction of movement of the cutting tool and a sliding cutting movement taking place transversely to the direction of movement is achieved.
  • the angle of inclination between the cutting edge of the cutting tool and the direction of movement of the cutting tool must be in the specified range, the exact adjustment of the angle depending on the type of foam to be cut and the foaming process. In most cases you get a perfect cut with an angle of 135 °.
  • the second factor that is important for the method according to the invention is the cutting speed. At speeds below 0.3 m / sec. There are jams in front of the cutting edge and the cut becomes unclean.
  • the invention further relates to a device for carrying out the method according to the features according to the characterizing part of patent claim 4.
  • Advantageous embodiments of the device are described in subclaims 5 to 10.
  • the device according to the invention has the advantage that a large number of knives, for example up to 80 knives, are arranged in parallel next to one another can, so that larger plates can be provided with a large number of parallel cuts at the same time without the cut surfaces becoming unclean.
  • the device according to the invention can be used in a particularly advantageous manner for the production of roller insulation sheets made of polyurethane foam, which are provided with a large number of parallel cuts.
  • a plate 2 made of, for example, polyurethane foam is shown in FIG. 1, through which a knife 1 is moved in the direction of arrow B to produce a longitudinal cut.
  • the knife 1 has essentially the shape of a right-angled triangle, the hypotenuse representing the cutting edge la and is arranged such that the cutting edge la with the direction of movement B in the illustrated embodiment forms an obtuse angle oL of 135 °, which ent forms a triangle angle of 45 ° speaks.
  • the speed at which knife 1 is moved in the direction of arrow B is 0.4 m / sec. or more.
  • a simple device for cutting foam sheets is shown.
  • a steel beam 3 which is movable in the direction of arrow B is arranged. It is guided at both ends via rollers 6 in rails 5 running in the longitudinal direction. Instead of the guide rollers and guide rails, there can of course also be gears which engage in toothed racks.
  • the drive device by means of which the steel beam 3 is moved in direction B, are not specifically shown and are known per se.
  • essentially triangular knives 1 are arranged so that their cutting edges 1 a point upwards and form an obtuse angle of, for example, 135 ° with the direction of movement B.
  • the knives 1 are arranged on the steel beam 3 parallel to one another. In the illustrated embodiment, 12 knives are shown. Of course, considerably more knives, for example up to 80 knives, can be arranged side by side in this way. The thickness of the knives can be up to 1 mm.
  • the steel beam 3 In its initial position, the steel beam 3 rests against a stop 7. It can be moved in the direction of arrow B until it hits one on the opposite Side of the frame 4 arranged counter-stop 8 strikes, in order then to be moved back in the arrow direction R back to the starting position.
  • rollers 9 are arranged between the knives 1 in the longitudinal direction of the frame 4.
  • the foam sheet 2 is fed in the transverse direction P of the device and drawn into the device by the rollers 9.
  • the steel beam 3 with the knives 1 on the frame 4 is pulled from one side to the other side.
  • the knives 1 penetrate into the foam sheet 2 from below.
  • the foam sheet 2 is slightly lifted from the rollers 9 and rests with its top against a stop plate 10.
  • the foam sheet 2 falls back onto the roller 9 and is conveyed out of the device in the transverse direction P. Then the steel beam 3 is moved back to the starting position and a new foam sheet 2 can be inserted into the device.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

1. A method for the chipless cutting of boards (2) of foamed plastics having elastic, high melting cell walls, especially of foamed polyurethane plastics, by means of a cutting tool (1) being moved through the foamed plastics material and having a straight cutting edge (1a), characterized in that the cutting edge (1a) of the cutting tool (1) includes with the direction of movement (B) of said cutting tool, an obtuse angle (alpha) between 120 degrees and 145 degrees, and that the speed of movement of the cutting tool through the foamed plastics amounts to at least 0,3 m/sec.

Description

Die Erfindung betrifft ein Verfahren zum spanlosen Schneiden von Platten aus Schaumstoff mit elastischen, schwerschmelzbaren Zellenwänden, insbesondere aus Polyurethan-Schaumstoff, mittels eines durch den Schaumstoff bewegten,gerade Schneidkanten aufweisenden Schneidwerkzeugs.The invention relates to a method for the non-cutting cutting of plates made of foam with elastic, meltable cell walls, in particular made of polyurethane foam, by means of a cutting tool having straight cutting edges moved through the foam.

Es ist bekannt, Platten aus Schaumstoff in spanender Bearbeitung zu schneiden. Das Schneiden geschieht in der Regel mit rotierenden Sägeblättern oder Drahtsägen.It is known to cut foam sheets by machining. The cutting is usually done with rotating saw blades or wire saws.

Bei leichtschmelzbaren Schaumstoffplatten aus Polystyrol, Polystyren oder dergleichen ist es bekannt, spanlos zu arbeiten, indem mit einem beheizten Schneidwerkzeug gearbeitet wird. Das letztgenannte Verfahren hat den Vorteil, daß beim Schneiden kein Materialstaub entsteht. Dies kann besonders wichtig sein, wenn nach dem Schneiden auf die Platten eine Kaschierung aufgeklebt werden soll, die nur auf einer staubfreien Oberfläche eine ausreichende Haftung erhält.In the case of easily meltable foam sheets made of polystyrene, polystyrene or the like, it is known to work without cutting by working with a heated cutting tool. The latter method has the advantage that no material dust arises when cutting. This can be particularly important if, after cutting, a lamination is to be glued onto the panels that will only have sufficient adhesion on a dust-free surface.

Es hat sich gezeigt, daß ein spanloses Schneiden von Platten aus Schaumstoff mit elastischen, schwerschmelzbaren Zellenwänden, beispielsweise Polyurethanschaumstoff, schwierig ist, weil die Zellenwände sich nicht leicht durchtrennen lassen, sondern sich aufgrund ihrer Elastizität dehnen, wobei sie komprimiert werden. Bei der Bewegung eines normalen Messers durch Polyurethan-Schaumstoff stauen sich flachgedrückte Zellen vor dem Messer bis es zu einem Einreißen kommt, wobei sich kleine elastische Materialklumpen bilden, die vom Messer weiter durch den Schaumstoff gedrückt werden. Auf diese Weise wird die Schnittfläche ungenau und unsauber und die erzeugten Platten sind zur Verwendung als Dämmplatten und Lamellen-Rolldämmbahnen ungeeignet.It has been shown that a non-cutting cutting of sheets of foam with elastic, fusible cell walls, for example polyurethane foam, is difficult because the cell walls are not easily cut, but due to stretch their elasticity, compressing them. When a normal knife is moved through polyurethane foam, flattened cells accumulate in front of the knife until it tears, forming small, elastic lumps of material that are pushed further by the knife through the foam. In this way, the cut surface becomes imprecise and unclean and the panels produced are unsuitable for use as insulation panels and lamella roll insulation sheets.

Es ist ein Verfahren zum spanlosen Schneiden von Platten aus Schaumstoff bekannt (DE-PS 24 08 319), bei dem die Platten vor dem Schneiden vorgespannt werden, was zur Folge hat, daß die Zellenwände leichter zu durchbrechen sind, ohne daß sich vor dem Messer die erwähnten Materialklumpen bilden. Dieses bekannte Verfahren hat den Nachteil, daß wegen der jeweils zu erzeugenden Vorspannung sowohl die Schneidegeschwindigkeit als auch die Anzahl der gleichzeitig erzeugbaren Schnitte begrenzt sind.There is a known method for cutting foam plates without cutting (DE-PS 24 08 319), in which the plates are pretensioned before cutting, with the result that the cell walls are easier to break through without having to stand in front of the knife form the lumps of material mentioned. This known method has the disadvantage that both the cutting speed and the number of cuts that can be produced simultaneously are limited because of the prestress to be generated in each case.

Die der Erfindung zugrunde liegende Aufgabe bestand darin, ein Verfahren der eingangs erwähnten Art so auszubilden, daß es mit einfachen Einrichtungen durchführbar ist, wobei saubere und gerade Schnitte erhalten werden sollen und in einfacher Weise mehrere Schnitte gleichzeitig hergestellt werden können.The object underlying the invention was to develop a method of the type mentioned in such a way that it can be carried out with simple devices, clean and straight cuts being obtained and a plurality of cuts being able to be produced in a simple manner.

Die Lösung dieser Aufgabe erfolgt erfindungsgemäß mit den Merkmalen aus dem kennzeichnenden Teil des Patentanspruchs 1. Vorteilhafte Ausführungsformen des Verfahrens sind in den Unteransprüchen 2 und 3 beschrieben.This object is achieved according to the invention with the features from the characterizing part of patent claim 1. Advantageous embodiments of the method are described in subclaims 2 and 3.

Wie weiter unten anhand eines Ausführungsbeispiels näher erläutert, geht das erfindungsgemäße Verfahren von der Erkenntnis aus, daß ein hervorragender Schnitt erhalten wird, wenn ein Schneidwerkzeug mit gerader Schneidkante so durch den Schaumstoff bewegt wird, daß ein optimales Verhältnis zwischen dem in Bewegungsrichtung des Schneidwerkzeuges ausgeübten Druck und einer quer zur Bewegungsrichtung erfolgenden gleitenden Schneidbewegung erreicht wird.As explained in more detail below with the aid of an exemplary embodiment, the method according to the invention is based on the knowledge that an excellent cut is obtained when a cutting tool with a straight cutting edge is moved through the foam in such a way that an optimal ratio between the pressure exerted in the direction of movement of the cutting tool and a sliding cutting movement taking place transversely to the direction of movement is achieved.

Der Neigungswinkel zwischen der Schneidkante des Schneidwerkzeugs und der Bewegungsrichtung des Schneidwerkzeugs muß in dem angegebenen Bereich liegen, wobei die genaue Justierung des Winkels von dem zu schneidenen Schaumstofftyp und dem Aufschaumverfahren abhängig ist. In den meisten Fällen bekommt man einen einwandfreien Schnitt mit einem Winkel von 135°. Neben dem Winkel ist der zweite, für das erfindungsgemäße Verfahren wichtige Faktor die Schneidgeschwindigkeit. Bei Geschwindigkeiten unterhalb 0,3 m/sec. treten vor der Schneidkante Stauungen auf und der Schnitt wird unsauber.The angle of inclination between the cutting edge of the cutting tool and the direction of movement of the cutting tool must be in the specified range, the exact adjustment of the angle depending on the type of foam to be cut and the foaming process. In most cases you get a perfect cut with an angle of 135 °. In addition to the angle, the second factor that is important for the method according to the invention is the cutting speed. At speeds below 0.3 m / sec. There are jams in front of the cutting edge and the cut becomes unclean.

Schneidgeschwindigkeiten oberhalb von 0,4 m/sec. ergeben stets einwandfreie Schnitte.Cutting speeds above 0.4 m / sec. always result in flawless cuts.

Gegenstand der Erfindung ist weiterhin eine Einrichtung zur Durchführung des erfindungsgemäßen Verfahrens gemäß den Merkmalen aus dem kennzeichenden Teil des Patentanspruchs 4. Vorteilhafte Ausführungsformen der Einrichtung sind in den Unteransprüchen 5 bis 10 beschrieben.The invention further relates to a device for carrying out the method according to the features according to the characterizing part of patent claim 4. Advantageous embodiments of the device are described in subclaims 5 to 10.

Die erfindungsgemäße Einrichtung hat den Vorteil, daß eine große Anzahl von Messern, beispielsweise bis zu 80 Messern, parallel nebeneinander angeordnet werden können, so daß größere Platten mit einer großen Anzahl parallellaufender Schnitte gleichzeitig versehen werden können, ohne daß die Schnittflächen unsauber werden.The device according to the invention has the advantage that a large number of knives, for example up to 80 knives, are arranged in parallel next to one another can, so that larger plates can be provided with a large number of parallel cuts at the same time without the cut surfaces becoming unclean.

Die erfindungsgemäße Einrichtung ist in besonders vorteilhafter Weise einsetzbar zur Herstellung von Rolldämmbahnen aus Polyurethan-Schaumstoff, die mit einer großen Anzahl parallelverlaufender Trennschnitte versehen sind.The device according to the invention can be used in a particularly advantageous manner for the production of roller insulation sheets made of polyurethane foam, which are provided with a large number of parallel cuts.

Im folgenden wird anhand der beigefügten Zeichnungen das erfindungsgemäße Verfahren näher erläutert und ein Ausführungsbeispiel einer Einrichtung zur Durchführung des erfindungsgemäßen Verfahrens beschrieben.The method according to the invention is explained in more detail below with reference to the accompanying drawings and an embodiment of a device for carrying out the method according to the invention is described.

In den Zeichnungen zeigen:

  • Fig. 1 in schematisierter vergrößerter Darstellung ein durch eine Schaumstoffplatte bewegtes Messer;
  • Fig. 2 in stark schematisierter Darstellung eine Draufsicht auf eine Einrichtung zum Schneiden von Schaumstoffplatten;
  • Fig. 3 eine Seitenansicht der Einrichtung nach Fig. 2.
The drawings show:
  • Figure 1 is a schematic enlarged view of a knife moved by a foam plate.
  • Figure 2 is a highly schematic representation of a top view of a device for cutting foam sheets.
  • 3 shows a side view of the device according to FIG. 2.

Zur Erläuterung des Verfahrens zum spanlosen Schneiden von Platten aus Schaumstoff mit elastischen, schwerschmelzbaren Zellenwänden ist in Fig. 1 eine Platte 2 aus beispielsweise Polyurethan-Schaumstoff dargestellt, durch welche zur Erzeugung eines Längsschnittes ein Messer 1 in Pfeilrichtung B hindurchbewegt wird. Das Messer 1 besitzt im wesentlichen die Form eines rechtwinkligen Dreieckes, wobei die Hypotenuse die Schneidkante la darstellt und ist so angeordnet, daß die Schneidkante la mit der Bewegungsrichtung B im dargestellten Ausführungsbeispiel einen stumpfen WinkeloL von 135° bildet, was einem Dreieckswinkel von 45° entspricht. Die Geschwindigkeit, mit der das Messer 1 in Pfeilrichtung B bewegt wird, beträgt 0,4 m/sec. oder mehr. Es hat sich gezeigt, daß unter den genannten Verfahrensbedingungen ein guter Ausgleich zwischen dem Drücken und Gleiten an der Schneidkante la des Messers 1 stattfindet, so daß kein Stau der Zellenwände vor der Schneidkante la auftritt, sondern die Schneidkante glatt in das Material eindringt und ein Schnitt mit außerordentlich sauberer Schnittfläche erzeugt wird.To explain the method for cutting chips from foam with elastic, meltable cell walls without cutting, a plate 2 made of, for example, polyurethane foam is shown in FIG. 1, through which a knife 1 is moved in the direction of arrow B to produce a longitudinal cut. The knife 1 has essentially the shape of a right-angled triangle, the hypotenuse representing the cutting edge la and is arranged such that the cutting edge la with the direction of movement B in the illustrated embodiment forms an obtuse angle oL of 135 °, which ent forms a triangle angle of 45 ° speaks. The speed at which knife 1 is moved in the direction of arrow B is 0.4 m / sec. or more. It has been shown that under the aforementioned process conditions there is a good balance between the pressing and sliding on the cutting edge la of the knife 1, so that there is no jamming of the cell walls in front of the cutting edge la, but the cutting edge penetrates smoothly into the material and a cut is produced with an exceptionally clean cut surface.

In den Fig. 2 und 3 ist eine einfache Einrichtung zum Schneiden von Schaumstoffplatten dargestellt. Auf einem Grundgestell 4 ist ein in Pfeilrichtung B bewegbarer Stahlbalken 3 angeordnet. Er ist an seinen beiden Enden über Rollen 6 in in Längsrichtung verlaufenden Schienen 5 geführt. Anstelle der Führungsrollen und Führungsschienen können selbstverständlich auch in Zahnstangen eingreifende Zahnräder vorhanden sein. Die Antriebsvorrichtung, mittels der der Stahlbalken 3 in Richtung B bewegt wird, sind nicht eigens dargestellt und an sich bekannt. An der Oberseite des Stahlbalkens 3 sind im wesentlichen dreieckförmige Messer 1 so angeordnet, daß ihre Schneidkanten la nach oben weisen und mit der Bewegungsrichtung B einen stumpfen Winkel von beispielsweise 135° bilden. Die Messer 1 sind am Stahlbalken 3 parallel zueinander angeordnet. Im dargestellten Ausführungsbeispiel sind 12 Messer dargestellt. Selbstverständlich können in dieser Weise erheblich mehr Messer, beispielsweise bis zu 80 Messern, nebeneinander angeordnet sein. Die Dicke der Messer kann bis zu 1 mm betragen.2 and 3, a simple device for cutting foam sheets is shown. On a base frame 4, a steel beam 3 which is movable in the direction of arrow B is arranged. It is guided at both ends via rollers 6 in rails 5 running in the longitudinal direction. Instead of the guide rollers and guide rails, there can of course also be gears which engage in toothed racks. The drive device, by means of which the steel beam 3 is moved in direction B, are not specifically shown and are known per se. At the top of the steel beam 3, essentially triangular knives 1 are arranged so that their cutting edges 1 a point upwards and form an obtuse angle of, for example, 135 ° with the direction of movement B. The knives 1 are arranged on the steel beam 3 parallel to one another. In the illustrated embodiment, 12 knives are shown. Of course, considerably more knives, for example up to 80 knives, can be arranged side by side in this way. The thickness of the knives can be up to 1 mm.

In seiner Ausgangsstellung liegt der Stahlbalken 3 an einem Anschlag 7 an. Er kann in Pfeilrichtung B bewegt werden, bis er auf einen an der gegenüberliegenden Seite des Gestells 4 angeordneten Gegenanschlag 8 auftrifft, um dann in Pfeilrichtung R wieder in die Ausgangsstellung zurückbewegt zu werden.In its initial position, the steel beam 3 rests against a stop 7. It can be moved in the direction of arrow B until it hits one on the opposite Side of the frame 4 arranged counter-stop 8 strikes, in order then to be moved back in the arrow direction R back to the starting position.

Zwischen den Messern 1 sind in Längsrichtung des Gestells 4 angetriebene Walzen 9 angeordnet. Die Schaumstoffplatte.2 wird in Querrichtung P der Einrichtung zugeführt und durch die Walzen 9 in die Einrichtung hineingezogen. Wenn die Platte 2 die richtige Position eingenommen hat, wird der Stahlbalken 3 mit den Messern 1 auf dem Gestell 4 von der einen Seite bis zur anderen Seite hin gezogen. Die Messer 1 dringen dabei von unten in die Schaumstoffplatte 2 ein. Dabei wird die Schaumstoffplatte 2 von den Walzen 9 leicht abgehoben und legt sich mit ihrer Oberseite an eine Anschlagplatte 10 an. Wenn die Messer in der Endstellung angekommen sind, fällt die Schaumstoffplatte 2 wieder auf die Walze 9 und wird in Querrichtung P aus der Einrichtung hinausbefördert. Dann wird der Stahlbalken 3 in die Ausgangsposition zurückgefahren und eine neue Schaumstoffplatte 2 kann in die Einrichtung hineingeführt werden.Driven rollers 9 are arranged between the knives 1 in the longitudinal direction of the frame 4. The foam sheet 2 is fed in the transverse direction P of the device and drawn into the device by the rollers 9. When the plate 2 has taken the correct position, the steel beam 3 with the knives 1 on the frame 4 is pulled from one side to the other side. The knives 1 penetrate into the foam sheet 2 from below. The foam sheet 2 is slightly lifted from the rollers 9 and rests with its top against a stop plate 10. When the knives have reached the end position, the foam sheet 2 falls back onto the roller 9 and is conveyed out of the device in the transverse direction P. Then the steel beam 3 is moved back to the starting position and a new foam sheet 2 can be inserted into the device.

Claims (10)

1. Verfahren zum spanlosen Schneiden von Platten aus Schaumstoff mit elastischen, schwerschmelzbaren Zellenwänden, insbesondere aus Polyurethan-Schaumstoff, mittels eines durch den Schaumstoff bewegten, gerade Schneidkanten aufweisenden Schneidwerkzeugs, dadurch gekennzeichnet, daß die Schneidkante des Schneidwerkzeugs mit der Bewegungsrichtung des Schneidwerkzeugs einen stumpfen Winkel (α) von 120° bis 145° bildet und die Geschwindigkeit, mit der das Schneidwerkzeug durch den Schaumstoff bewegt wird, mindestens 0,3 m/sec. beträgt.1. A method for cutting chips from foam with elastic, meltable cell walls, in particular from polyurethane foam, by means of a moving through the foam, straight cutting edges having cutting tool, characterized in that the cutting edge of the cutting tool with the direction of movement of the cutting tool an obtuse angle (α) from 120 ° to 145 ° and the speed at which the cutting tool is moved through the foam is at least 0.3 m / sec. is. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Geschwindigkeit, mit der das Schneidwerkzeug durch den Schaumstoff bewegt wird, mehr als 0,4 m/sec. beträgt.2. The method according to claim 1, characterized in that the speed at which the cutting tool is moved through the foam, more than 0.4 m / sec. is. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Schneidkante des Schneidwerkzeugs mit der Bewegungsrichtung des Schneidwerkzeugs einen stumpfen Winkel (α) von 135° bildet.3. The method according to claim 1 or 2, characterized in that the cutting edge of the cutting tool with the direction of movement of the cutting tool forms an obtuse angle (α) of 135 °. 4. Einrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 3, gekennzeichnet durch ein Grundgestell (4), an dem ein Messerträger (3) in einer horizontalen Ebene bewegbar geführt ist, an dessen Oberseite mindestens ein Messer (1) so angeordnet ist, daß seine nach oben weisende Schneidkante (la) mit der Bewegungsrichtung (B) des Messerträgers einen stumpfen Winkel ( ) von 120° bis 145° bildet und am Grundgestell (4) Auflagevorrichtungen (9) für eine Schaumstoffplatte so angeordnet sind, daß eine auf sie aufgelegte Schaumstoffplatte (2) mindestens mit einem Teil ihrer Dicke in der Bahn des Messers (1) liegt.4. Device for performing the method according to one of claims 1 to 3, characterized by a base frame (4) on which a knife carrier (3) is movably guided in a horizontal plane, on the top of which at least one knife (1) is arranged in this way that its upward-facing cutting edge (la) forms an obtuse angle () with the direction of movement (B) of the knife carrier () from 120 ° to 145 ° and on the base frame (4) support devices (9) for a foam sheet are arranged so that one the foam sheet (2) placed there lies at least part of its thickness in the path of the knife (1). 5. Einrichtung nach Anspruch 4, dadurch gekennzeichnet, daß das Messer (1) am Messerträger (3) so justierbar angeordnet ist, daß der Winkel zwischen Schneidkante (la) und Bewegungsrichtung (8) einstellbar veränderbar ist.5. Device according to claim 4, characterized in that the knife (1) on the knife carrier (3) is arranged so that the angle between the cutting edge (la) and the direction of movement (8) is adjustable. 6. Einrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß an einem balkenartigen, quer zu seiner Längsrichtung bewegbaren Messerträger (3) eine Vielzahl von Messern (1) parallel zueinander und quer zur Längsrichtung des Messerträgers (3) angeordnet sind.6. Device according to claim 4 or 5, characterized in that a plurality of knives (1) are arranged parallel to one another and transversely to the longitudinal direction of the knife carrier (3) on a bar-like knife carrier (3) movable transversely to its longitudinal direction. 7. Einrichtung nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß die Auflagevorrichtungen (9) höhenverstellbar angeordnet sind.7. Device according to one of claims 4 to 6, characterized in that the support devices (9) are arranged adjustable in height. 8. Einrichtung nach einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, daß die Auflagevorrichtungen als angetriebene Tragwalzen (9) ausgebildet sind, deren Drehachsen parallel zur Bewegungsrichtung (B) des Messerträgers (3) verlaufen.8. Device according to one of claims 4 to 7, characterized in that the support devices are designed as driven support rollers (9) whose axes of rotation extend parallel to the direction of movement (B) of the knife carrier (3). 9. Einrichtung nach einem der Ansprüche 4 bis 8, dadurch gekennzeichnet, daß das Messer (1) eine Dicke von max. 1 mm aufweist.9. Device according to one of claims 4 to 8, characterized in that the knife (1) has a thickness of max. 1 mm. 10. Einrichtung nach einem der Ansprüche 4 bis 9, dadurch gekennzeichnet, daß oberhalb der Auflagevorrichtungen (9) in ihrer Höhe verstellbare Anschlagvorrichtungen (10) angeordnet sind.10. Device according to one of claims 4 to 9, characterized in that above the support devices (9) adjustable in height stop devices (10) are arranged.
EP84108580A 1983-08-18 1984-07-20 Method for the chipless cutting of boards of foamed plastic and apparatus for performing the method Expired EP0139879B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84108580T ATE22409T1 (en) 1983-08-18 1984-07-20 METHOD FOR CUTTING SHEETS OF FOAM WITHOUT SCUPPING AND EQUIPMENT FOR IMPLEMENTING THE METHOD.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3329852 1983-08-18
DE19833329852 DE3329852A1 (en) 1983-08-18 1983-08-18 METHOD FOR CHIP-FREE CUTTING OF FOAM PLATES AND DEVICE FOR CARRYING OUT THE METHOD

Publications (2)

Publication Number Publication Date
EP0139879A1 true EP0139879A1 (en) 1985-05-08
EP0139879B1 EP0139879B1 (en) 1986-09-24

Family

ID=6206871

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108580A Expired EP0139879B1 (en) 1983-08-18 1984-07-20 Method for the chipless cutting of boards of foamed plastic and apparatus for performing the method

Country Status (3)

Country Link
EP (1) EP0139879B1 (en)
AT (1) ATE22409T1 (en)
DE (2) DE3329852A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2710578A1 (en) * 1993-09-30 1995-04-07 Meier Freres Machine for cutting rounds of cheese

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Publication number Priority date Publication date Assignee Title
US1983837A (en) * 1933-10-21 1934-12-11 Louis P Berwick Hose cutter
US2409203A (en) * 1945-04-26 1946-10-15 James A Gale Sheet slitting device
US3263540A (en) * 1964-05-27 1966-08-02 Dow Chemical Co Apparatus for slitting plastic film
DE2403595A1 (en) * 1973-01-25 1974-08-29 Man Isolatie B V De PROCESS AND EQUIPMENT FOR MANUFACTURING OBJECTS FROM HARD SYNTHETIC FOAM MATERIAL
DE2509380A1 (en) * 1974-04-23 1975-11-06 Bernardus Johannes Van Dal CUTTING MACHINE

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DE2750835C3 (en) * 1977-11-14 1980-06-19 Jagenberg-Werke Ag, 4000 Duesseldorf Device for the continuous peeling off of longitudinal strips from a packaging web
DE2942612C2 (en) * 1979-10-22 1984-10-31 Maschinenfabrik Moenus Ag, 6000 Frankfurt Band knife splitting machine
US4315450A (en) * 1980-01-25 1982-02-16 Flexible Steel Lacing Company Method of and apparatus for sciving belts

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1983837A (en) * 1933-10-21 1934-12-11 Louis P Berwick Hose cutter
US2409203A (en) * 1945-04-26 1946-10-15 James A Gale Sheet slitting device
US3263540A (en) * 1964-05-27 1966-08-02 Dow Chemical Co Apparatus for slitting plastic film
DE2403595A1 (en) * 1973-01-25 1974-08-29 Man Isolatie B V De PROCESS AND EQUIPMENT FOR MANUFACTURING OBJECTS FROM HARD SYNTHETIC FOAM MATERIAL
DE2509380A1 (en) * 1974-04-23 1975-11-06 Bernardus Johannes Van Dal CUTTING MACHINE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2710578A1 (en) * 1993-09-30 1995-04-07 Meier Freres Machine for cutting rounds of cheese

Also Published As

Publication number Publication date
DE3460824D1 (en) 1986-10-30
EP0139879B1 (en) 1986-09-24
DE3329852A1 (en) 1985-03-28
ATE22409T1 (en) 1986-10-15

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