EP0139879B1 - Procédé pour couper sans copeaux des plaques en mousse ainsi qu'installation pour exécuter le procédé - Google Patents

Procédé pour couper sans copeaux des plaques en mousse ainsi qu'installation pour exécuter le procédé Download PDF

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Publication number
EP0139879B1
EP0139879B1 EP84108580A EP84108580A EP0139879B1 EP 0139879 B1 EP0139879 B1 EP 0139879B1 EP 84108580 A EP84108580 A EP 84108580A EP 84108580 A EP84108580 A EP 84108580A EP 0139879 B1 EP0139879 B1 EP 0139879B1
Authority
EP
European Patent Office
Prior art keywords
movement
cutting
cutting tool
knife
foamed plastics
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84108580A
Other languages
German (de)
English (en)
Other versions
EP0139879A1 (fr
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
Application filed by Icopal GmbH filed Critical Icopal GmbH
Priority to AT84108580T priority Critical patent/ATE22409T1/de
Publication of EP0139879A1 publication Critical patent/EP0139879A1/fr
Application granted granted Critical
Publication of EP0139879B1 publication Critical patent/EP0139879B1/fr
Expired legal-status Critical Current

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Classifications

    • 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 sheets 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 invention in accordance with the features from 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, can be arranged in parallel next to one another, 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 manufacture of roll 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 1a and being arranged in such a way that the cutting edge 1a forms an obtuse angle a of 135 ° with the direction of movement B in the illustrated embodiment, which is a triangular angle of 45 ° corresponds.
  • the speed at which knife 1 is moved in the direction of arrow B is 0.4 m / aec. or more.
  • a simple device rum 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 1a 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 strikes a counter-stop 8 arranged on the opposite side of the frame 4, in order then to be moved back into the starting position in the direction of arrow R.
  • 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.

Landscapes

  • 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)

Claims (10)

1. Procédé pour le découpage sans enlèvement de copeaux de plaques (2) en mousse, avec des parois de cellules élastiques et difficilement fusibles et, en particulier, en mousse de polyuréthane, au moyen d'un outil de coupe (1) présentant une arête de coupe droite (1a) se déplaçant à travers la mousse, caractérisé en ce que l'arête de coupe (1a) de l'outil de coupe (1) forme, avec la direction de déplacement (B) de l'outil de coupe, un angle obtus (a) de 120° à 145° et que la vitesse avec laquelle l'outil de coupe se déplace à travers la mousse est d'au moins 0,3 m/seconde.
2. Procédé selon la revendication 1, caractérisé en ce que la vitesse avec laquelle l'outil de coupe (1) se déplace à travers la mousse est supérieure à 0,4 m/seconde.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'arête de coupe (1a) de l'outil de coupe (1) forme, avec la direction de déplacement (B) de l'outil de coupe, un angle obtus (a) de 135°.
4. Dispositif pour mettre en oeuvre le procédé selon l'une des revendications 1 à 3, caractérisé par un châssis de base (4), sur lequel un porte-couteaux (3) peut se déplacer avec guidage dans un plan horizontal, sa face supérieure étant équipée d'au moins un couteau (1), de manière à ce que son arête de coupe (1a) tournée vers le haut forme, avec la direction de déplacement (B) du porte-couteaux, un angle obtus (a) de 120° à 145°, tandis que des dispositifs de support (9), pour une plaque en mousse (2) sont disposés sur le châssis de base (4), de manière à ce que la plaque de mousse (2) reposant sur ceux-ci se trouve avec au moins une partie de son épaisseur dans le trajet du couteau (1).
5. Dispositif selon la revendication 4, caractérisé en ce que le couteau (1) peut être réglé sur le porte-couteaux (3) de manière à ce que l'angle entre l'arête de coupe (1a) et la direction de déplacement (B) puisse être réglé et modifie.
6. Dispositif selon la revendication 4 ou 5, caractérisé en ce que de nombreux couteaux (1) sont disposés parallèlement les uns aux autres et transversalement par rapport à la direction longitudinale du porte-couteaux (3) sur un porte-couteaux (3) en forme de poutre et pouvant se déplacer transversalement par rapport à sa direction longitudinale.
7. Dispositif selon l'une des revendications 4 à 6, caractérisé en ce que les dispositifs de support (9) peuvent être réglés en hauteur.
8. Dispositif selon l'une des revendications 4 à 7, caractérisé en ce que les dispositifs de support sont constitués par des cylindres porteurs entraînés (9), dont les axes de rotation sont parallèles à la direction de déplacement (B) du porte-couteaux (3).
9. Dispositif selon l'une des revendications 4 à 8, caractérisé en ce que le couteau (1) présente une épaisseur de 1 mm au maximum.
10. Dispositif selon l'une des revendications 4 à 9, caractérisé en ce que les dispositifs de butée (10), réglables en hauteur, sont disposés au-dessus des dispositifs de support (9).
EP84108580A 1983-08-18 1984-07-20 Procédé pour couper sans copeaux des plaques en mousse ainsi qu'installation pour exécuter le procédé Expired EP0139879B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84108580T ATE22409T1 (de) 1983-08-18 1984-07-20 Verfahren zum spanlosen schneiden von platten aus schaumstoff sowie einrichtung zur durchfuehrung des verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3329852 1983-08-18
DE19833329852 DE3329852A1 (de) 1983-08-18 1983-08-18 Verfahren zum spanlosen schneiden von platten aus schaumstoff sowie einrichtung zur durchfuehrung des verfahrens

Publications (2)

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

Family

ID=6206871

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108580A Expired EP0139879B1 (fr) 1983-08-18 1984-07-20 Procédé pour couper sans copeaux des plaques en mousse ainsi qu'installation pour exécuter le procédé

Country Status (3)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2710578B1 (fr) * 1993-09-30 1995-12-08 Meier Freres Machine pour couper des meules de fromage.

Family Cites Families (8)

* 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
NL7301108A (fr) * 1973-01-25 1974-07-29
NL7405443A (nl) * 1974-04-23 1975-10-27 Dal Bernardus Johannes Van Snijmachine.
DE2750835C3 (de) * 1977-11-14 1980-06-19 Jagenberg-Werke Ag, 4000 Duesseldorf Vorrichtung zum fortlaufenden Abschalen von Langsstreifen von einer Verpackungsbahn
DE2942612C2 (de) * 1979-10-22 1984-10-31 Maschinenfabrik Moenus Ag, 6000 Frankfurt Bandmesserspaltmaschine
US4315450A (en) * 1980-01-25 1982-02-16 Flexible Steel Lacing Company Method of and apparatus for sciving belts

Also Published As

Publication number Publication date
ATE22409T1 (de) 1986-10-15
DE3460824D1 (en) 1986-10-30
EP0139879A1 (fr) 1985-05-08
DE3329852A1 (de) 1985-03-28

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