EP0760733B1 - Procede servant a decouper des materiaux isolants et lame servant a realiser ce procede - Google Patents

Procede servant a decouper des materiaux isolants et lame servant a realiser ce procede Download PDF

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Publication number
EP0760733B1
EP0760733B1 EP95909660A EP95909660A EP0760733B1 EP 0760733 B1 EP0760733 B1 EP 0760733B1 EP 95909660 A EP95909660 A EP 95909660A EP 95909660 A EP95909660 A EP 95909660A EP 0760733 B1 EP0760733 B1 EP 0760733B1
Authority
EP
European Patent Office
Prior art keywords
blade
protrusions
cutting
cutting edge
saw
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 - Lifetime
Application number
EP95909660A
Other languages
German (de)
English (en)
Other versions
EP0760733A1 (fr
Inventor
Ian Cridland
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.)
Rockwool AS
Original Assignee
Rockwool International AS
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 Rockwool International AS filed Critical Rockwool International AS
Publication of EP0760733A1 publication Critical patent/EP0760733A1/fr
Application granted granted Critical
Publication of EP0760733B1 publication Critical patent/EP0760733B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B9/00—Blades for hand knives
    • B26B9/02—Blades for hand knives characterised by the shape of the cutting edge, e.g. wavy
    • 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
    • B26D1/0006—Cutting members therefor
    • 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
    • B26D1/0006—Cutting members therefor
    • B26D2001/0013—Cutting members therefor consisting of a reciprocating or endless band
    • 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
    • B26D1/0006—Cutting members therefor
    • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations

Definitions

  • the present invention relates to a method of cutting loosely coherent fibrous insulation materials by means of a cutter comprising a blade having two substantially parallel surfaces which meet along an edge of the blade suitable for cutting, wherein at least on one of the blade surfaces protrusions are provided at the cutting edge, the protrusions being disposed generally perpendicular to the cutting edge in a region adjacent thereto.
  • the invention relates to a method of cutting mineral fibre products, such as mineral fibre webs and boards.
  • a large number of cutter blades are known for cutting foodstuffs, such as meat products, vegetables, e.g. tomatoes and fruits, and having varying edge shapes, cf. US patent No. 1793171, SE patent No. 105966, FR patent No. 1122521 and DK published patent application No. 152264 B.
  • the region adjacent to the cutting edge is wedge-shaped.
  • the wedge-shaped portion is waved seen in a plane perpendicular to the cutter blade plane.
  • the wave crests thus produced are within the planes defined by the opposite sides of the cutter blade.
  • US patent No. 2834108 discloses a cutter for cutting meat, fruits, vegetables, cake and the like, which is strongly waved in the region adjacent the cutting edge.
  • the cutting edge of this known cutter is serrated and thus it would present the same disadvantages as the saws mentioned above in case it was used to cut insulating materials.
  • WO93/08960 describes a kitchen knife which is also provided with a wedge-shaped edge, wherein, however, the blade is provided with protrusions at a distance from the edge, which protrusions serve to prevent the portions cut off with the knife from sticking to the knife blade.
  • WO 90/05620 discloses an apparatus for cutting a mineral wool web, said apparatus comprising a thin cutter blade having a knife toothed sharpened cutting edge.
  • the method defined in the preamble of claim 1 is characterized in using a blade wherein the projection of the cutting edge in a center plane lying in between the blade surfaces is rectilinear and wherein the protrusions extend from the blade surface and the extremities of the protrusions seen in a direction perpendicular to the center plane extend beyond the blade surface outside of the region in which the protrusions are provided.
  • Cutting through mineral fibre products with a blade according to the invention generates on the cutting planes a pattern of parallel grooves which extend in the direction of movement of the saw blade.
  • the blade is preferably waved seen in a plane perpendicular to the blade in the region adjacent the cutting edge.
  • blades may be used which have protrusions on only one side of the blade.
  • the waves at the cutting edge may extend across the entire width of the saw blade but it is preferred that they extend only across a comparatively small portion thereof, e.g. 10-40%, and that the wave height (the outlay) gradually decreases to finally become zero in the direction away from the cutting edge.
  • the waves are sinosoidal but other wave shapes may also be used.
  • the wave length i.e. the distance between two wave crests on the same side of the blade, and the wave height (the outlay) may vary within wide ranges, depending i.a. on the composition and density of the mineral fibre product.
  • the wave length is preferably between 10 and 40 mm and the outlay is about 5 mm.
  • the blade for use in the method according to the invention may have different shapes. It may for instance be of gradually decreasing height, such as a blade for a hand saw, or be belt or disc shaped. When a belt-shaped blade is used it has a preferred thickness of from 0.1 to 1 mm, and preferably the waves extend across the entire width of the belt.
  • the blade may be intended for manually operated saws or knives or for corresponding mechanically operated tools.
  • blades with non-sharpened edges may be used but the cutting performance is increased by using sharpened edges.
  • FIG. 1 denotes a saw blade with a cutting edge 2.
  • the saw blade 1 is waved, the wave height, however, decreasing in a direction away from the cutting edge to finally become zero.
  • the waveshape seen in a direction parallel to the cutting edge 2 is, for the blade shown, sinosoidal and it comprises depressed zones 4 which alternate with protruding zones 5.
  • loosely coherent mineral fibre products designate mineral fibre products of a density of from about 10 to about 150 kg/m 3 .
  • Such mineral fibre products are typically longitudinally and/or vertically compressed and preferably consists of rock wool, glass wool or slag wool fibres.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

Ce procédé, qui sert à découper des matériaux isolants, utilise à cet effet un couteau ou une scie ayant une lame, laquelle présente un bord de coupe droit, vu dans le plan de la lame, et est pourvue de dents sur l'un de ses côtés ou sur ses deux côtés. Ces dents ont des extrémités situées à une distance du centre de la lame qui est plus grande que la partie correspondante de la lame qui n'est pas pourvue de dents. Une lame de réalisation de ce procédé est décrite.

Claims (6)

  1. Procédé de coupe de matériaux isolants fibreux lâchement cohérents au moyen d'un outil de coupe comprenant une lame (1) présentant deux surfaces sensiblement parallèles qui se rejoignent le long d'un bord (2) de la lame (1) adapté à la coupe, dans lequel sur au moins une des surfaces de la lame, des saillies (4,5) sont ménagées au niveau du bord coupant (2), les saillies étant généralement perpendiculaires au bord coupant (2) dans une zone adjacente à celui-ci, caractérisé par l'utilisation d'une lame dans laquelle la projection du bord coupant dans un plan médian situé entre les surfaces de la lame est rectiligne et dans laquelle les saillies (4, 5) s'étendent à partir de la surface de la lame, et les extrémités des saillies (4, 5) vues dans une direction perpendiculaire au plan médian s'étendent au-delà de la surface de la lame à l'extérieur de la zone dans laquelle les saillies (4, 5) sont ménagées.
  2. Procédé selon la revendication 1, caractérisé en ce que la projection du bord coupant (2) dans un plan perpendiculaire au plan médian forme une courbe ondulée.
  3. Procédé selon la revendication 2, caractérisé en ce que la courbe est sinusoïdale.
  4. Procédé selon la revendication 2 ou 3, caractérisé en ce que la longueur d'onde de la courbe ondulée est comprise entre 10 et 40 mm.
  5. Procédé selon l'une quelconque des revendications 2 à 4, caractérisé en ce que la distance entre les extrémités des saillies (4, 5) et la surface de la lame adjacente à l'extérieur de la zone dans laquelle les saillies sont ménagées diminue progressivement dans une direction perpendiculaire au bord coupant (2).
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le bord coupant (2) est affilé.
EP95909660A 1994-02-22 1995-02-20 Procede servant a decouper des materiaux isolants et lame servant a realiser ce procede Expired - Lifetime EP0760733B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DK21594 1994-02-22
DK21594 1994-02-22
DK215/94 1994-02-22
PCT/DK1995/000070 WO1995022443A1 (fr) 1994-02-22 1995-02-20 Procede servant a decouper des materiaux isolants et lame servant a realiser ce procede

Publications (2)

Publication Number Publication Date
EP0760733A1 EP0760733A1 (fr) 1997-03-12
EP0760733B1 true EP0760733B1 (fr) 1998-06-03

Family

ID=8091035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95909660A Expired - Lifetime EP0760733B1 (fr) 1994-02-22 1995-02-20 Procede servant a decouper des materiaux isolants et lame servant a realiser ce procede

Country Status (4)

Country Link
EP (1) EP0760733B1 (fr)
AU (1) AU1806195A (fr)
DE (1) DE69502828D1 (fr)
WO (1) WO1995022443A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50105072D1 (de) 2000-06-29 2005-02-17 Kan Tech Gmbh Messer
CN103862487A (zh) * 2014-03-25 2014-06-18 余戈平 一种切割装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2834108A (en) * 1956-01-19 1958-05-13 Charles C Thompson Knife
FI56636C (fi) * 1977-06-21 1980-03-10 Paraisten Kalkki Oy Dammfri skaerning av en roerlig mineralullsbana
FI80622C (sv) * 1988-11-16 1990-07-10 Partek Ab Anordning för att kapa en mineralullsbana

Also Published As

Publication number Publication date
EP0760733A1 (fr) 1997-03-12
AU1806195A (en) 1995-09-04
WO1995022443A1 (fr) 1995-08-24
DE69502828D1 (de) 1998-07-09

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