WO1995022443A1 - Method of cutting insulation materials and blade suitable for use carrying out said method - Google Patents
Method of cutting insulation materials and blade suitable for use carrying out said method Download PDFInfo
- Publication number
- WO1995022443A1 WO1995022443A1 PCT/DK1995/000070 DK9500070W WO9522443A1 WO 1995022443 A1 WO1995022443 A1 WO 1995022443A1 DK 9500070 W DK9500070 W DK 9500070W WO 9522443 A1 WO9522443 A1 WO 9522443A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blade
- cutting edge
- cutting
- protrusions
- saw
- Prior art date
Links
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 insula- tion materials by means of a cutter or a saw with a blade provided with protrusions which extend from at least the one side of the blade in the region adjacent the cutting edge.
- 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.
- the method according to the invention is characterized in using a blade having a rectilinear cutting edge seen the blade plane and where the extremities of the protrusions are located a larger distance from the blade center than the corresponding portion of the blade which is not provided with protrusions.
- 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 gradual ⁇ ly 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.
- the invention further relates to a blade as disclosed above, viz. a blade which is provided with protrusions in the area adjacent the cutting edge, which protrusions extend from at least the one side of the blade, and which is characterized in that its cutting edge is rectilinear seen in the blade plane, and that the extremities of the protrusions are located at a larger distance from the blade centre than the side of the corresponding portion of the blade which is not provided with protrusions.
- fig. 1 is a perspective view of a saw blade according to the invention
- fig. 2 is a side view of the saw blade according to fig.
- fig. 3 is a cross sectional view along the line III-III in fig. 2.
- 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 wave ⁇ shape 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
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU18061/95A AU1806195A (en) | 1994-02-22 | 1995-02-20 | Method of cutting insulation materials and blade suitable for use carrying out said method |
DE69502828T DE69502828D1 (en) | 1994-02-22 | 1995-02-20 | METHOD FOR CUTTING INSULATION MATERIAL AND BLADE FOR CARRYING OUT THIS METHOD |
EP95909660A EP0760733B1 (en) | 1994-02-22 | 1995-02-20 | Method of cutting insulation materials and blade suitable for use carrying out said method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK0215/94 | 1994-02-22 | ||
DK21594 | 1994-02-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995022443A1 true WO1995022443A1 (en) | 1995-08-24 |
Family
ID=8091035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DK1995/000070 WO1995022443A1 (en) | 1994-02-22 | 1995-02-20 | Method of cutting insulation materials and blade suitable for use carrying out said method |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0760733B1 (en) |
AU (1) | AU1806195A (en) |
DE (1) | DE69502828D1 (en) |
WO (1) | WO1995022443A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103862487A (en) * | 2014-03-25 | 2014-06-18 | 余戈平 | Cutting device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE286800T1 (en) | 2000-06-29 | 2005-01-15 | Kan Tech Gmbh | KNIFE |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2834108A (en) * | 1956-01-19 | 1958-05-13 | Charles C Thompson | Knife |
GB2000118A (en) * | 1977-06-21 | 1979-01-04 | Paraisten Kalkki Oy | Dustfree cutting of a mineral wool web |
WO1990005620A1 (en) * | 1988-11-16 | 1990-05-31 | Oy Partek Ab | An apparatus for cutting a mineral wool web |
-
1995
- 1995-02-20 DE DE69502828T patent/DE69502828D1/en not_active Expired - Lifetime
- 1995-02-20 WO PCT/DK1995/000070 patent/WO1995022443A1/en active IP Right Grant
- 1995-02-20 AU AU18061/95A patent/AU1806195A/en not_active Abandoned
- 1995-02-20 EP EP95909660A patent/EP0760733B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2834108A (en) * | 1956-01-19 | 1958-05-13 | Charles C Thompson | Knife |
GB2000118A (en) * | 1977-06-21 | 1979-01-04 | Paraisten Kalkki Oy | Dustfree cutting of a mineral wool web |
WO1990005620A1 (en) * | 1988-11-16 | 1990-05-31 | Oy Partek Ab | An apparatus for cutting a mineral wool web |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103862487A (en) * | 2014-03-25 | 2014-06-18 | 余戈平 | Cutting device |
Also Published As
Publication number | Publication date |
---|---|
DE69502828D1 (en) | 1998-07-09 |
AU1806195A (en) | 1995-09-04 |
EP0760733B1 (en) | 1998-06-03 |
EP0760733A1 (en) | 1997-03-12 |
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