DK143738B - PROCEDURE FOR CUTTING A MOVABLE MINERAL WOOL - Google Patents
PROCEDURE FOR CUTTING A MOVABLE MINERAL WOOL Download PDFInfo
- Publication number
- DK143738B DK143738B DK277278AA DK277278A DK143738B DK 143738 B DK143738 B DK 143738B DK 277278A A DK277278A A DK 277278AA DK 277278 A DK277278 A DK 277278A DK 143738 B DK143738 B DK 143738B
- Authority
- DK
- Denmark
- Prior art keywords
- cutting
- mineral wool
- web
- speed
- procedure
- Prior art date
Links
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
- B26D1/12—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 cutting member moving about an axis
- B26D1/14—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 cutting member moving about an axis with a circular cutting member, e.g. disc cutter
- B26D1/143—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 cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis
- B26D1/15—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 cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis with vertical cutting member
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Glass Compositions (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Description
(19) DANMARK \£5/ (w)(19) DENMARK \ £ 5 / (w)
^ (12) FREMLÆGGELSESSKRIFT di) 143738 B^ (12) PUBLICATION DATE di) 143738 B
DIREKTORATET FOR PATENT· OG VAREMÆRKEVÆSENETDIRECTORATE OF PATENT AND TRADEMARKET
(21) Ansøgning nr. 2772/78 (51) Int.CI.3 B 26 D 1/14 (22) Indleveringsdag 20. jun. 1978 (24) Løbedag 20. jun. 1976 (41) Aim. tilgængelig 22. dec. 1978 (44) Fremlagt 5· okt. 1981 (86) International ansøgning nr.(21) Application No. 2772/78 (51) Int.CI.3 B 26 D 1/14 (22) Filing Date 20 Jun. 1978 (24) Race day 20 Jun. 1976 (41) Aim. available Dec. 22; 1978 (44) Posted 5 Oct. 1981 (86) International application no.
(86) International indleveringsdag (85) Videreførelsesdag - (62) Stamansøgning nr. -(86) International filing day (85) Continuation day - (62) Master application no. -
(30) Prioritet 21. jun. 1977* 7719^2, FI(30) Priority 21 Jun. 1977 * 7719 ^ 2, FI
(71) Ansøger OY PARTEK AB, SF-21 6C0 Farainen, FI.(71) Applicant OY PARTEK AB, SF-21 6C0 Farainen, FI.
(72) Opfinder PenttI Tapani Mat i as Peso la, FI: Hannu Helmer Jaem= sen, FI.(72) Invent PenttI Tapani Mat i as Peso la, FI: Hannu Helmer Jaem = sen, FI.
(74) Fuldmægtig Kontor for Industriel Eneret v. Svend Schønning.(74) Clerk of the Office of Industrial Excellence v. Svend Schønning.
(54) Fremgangsmåde til skæring af en bevægelig mineraluldsbane.(54) Method of cutting a movable mineral wool web.
Den foreliggende opfindelse angår en fremgangsmåde til skæring af en bevægelig mineraluldsbane.The present invention relates to a method of cutting a movable mineral wool web.
Ved fremstilling af mineraluldsprodukter til isoleringsformål opsamles den dannede mineraluld på et transportbånd, hvis hastighed er bestemmende for produktionskapaciteten.In the manufacture of mineral wool products for insulation purposes, the mineral wool formed is collected on a conveyor belt whose speed determines the production capacity.
Mineralulden danner en måtte, også kaldet en bane, som i de fle-q ste tilfælde indeholder et varmehærdende bindemiddel. Efter hærd- 2 ningen, som finder sted i en speciel hærdeovn og en derpå føl- 7 gende afkøling, er banens kanter så ujævne, at disse på en eller 3 anden måde må udjævnes. Desuden må banen opdeles i længderetnin- ^ gen og på tværs for at en ønsket og håndterbar form for mineral uldsprodukterne kan opnås.The mineral wool forms a mat, also called a web, which in most cases contains a thermosetting binder. After the curing, which takes place in a special curing oven and a subsequent cooling, the edges of the web are so uneven that they must be leveled in one or another way. In addition, the web must be divided longitudinally and transversely to obtain a desired and manageable form of the mineral wool products.
^ Den teknik, som i dag almindeligvis tilpasses til 143738 2 de nævnte delings- eller skæringsoperationer ved fremstilling af mineraluldsprodukter, er savning med roterende, fortandede klinger forsynet med skær af hårdmetal eller med hurtigt roterende slibeskiver. Denne teknik er dog mindre hensigtsmæssig på grund af den støvdannelse, som opstår, og som ud fra et arbejdshygiejnisk synspunkt er svær at styre. Samtidig opstår der tillige et materialetab, som under lang tids drift er betydeligt.^ The technique which is nowadays generally adapted to the said partitioning or cutting operations in the manufacture of mineral wool products is sawing with rotating, toothed blades provided with carbide or fast rotating grinding wheels. However, this technique is less appropriate because of the dust formation that arises and which is difficult to control from an occupational hygiene point of view. At the same time, a material loss also occurs, which is considerable over a long period of time.
Formålet for den foreliggende opfindelse er at udvikle en ny fremgangsmåde til skæring af mineraluldsbaner, ved hvilken fremgangsmåde støvudviklingen og det betydelige materialetab er eliminerede.The object of the present invention is to develop a new method for cutting mineral wool webs, which eliminates the process of dust generation and significant material loss.
For at opnå denne målsætning har man forsøgt at tillempe skæring med roterende knive på mineraluldsbaner på den måde, som anvendes inden for tekstilindustrien. Udmærkende for denne teknik er dels de roterende skæreklingers ægudformning, som er således at æggen skærer eller kløver stabelen af tøjlag, og dels skæreklingernes meget høje periferihastighed. Disse egenskaber egner sig selvklart for et produkt, som udgøres af oven på hinanden stablede bløde tøjlag, og resultatet bliver meget fint, d.v.s. skæresporet bliver rent, og støvdannelsen ringe samtidig med at klingen kan anvendes uden nyslibning gennem længere tid.To achieve this goal, attempts have been made to apply cutting with rotating knives on mineral wool webs in the manner used in the textile industry. Notable for this technique are partly the rotary cutting blade's egg design, which is such that the egg cuts or closes the stack of clothing layers, and partly the very high peripheral speed of the cutting blades. These properties are obviously suitable for a product made up of super-layered soft clothing layers, and the result is very fine, i.e. the cutting groove becomes clean and the dust formation low while the blade can be used without sanding for a long time.
Tillempningen af samme teknik til mineraluldsbaner, som er forholdsvis kompakte og hårde, og som har en anselig tykkelse varierende mellem 10 og 300 mm, har ikke været heldig. Støvdannelsen og materialetabene formindskes ganske vist væsentligt, men friktionsvarmen bliver høj, hvilket medfører en formforandring på klingen samtidig med, at klingen hurtigt bliver sløv.The application of the same technique to mineral wool webs, which are relatively compact and hard, and having a considerable thickness varying between 10 and 300 mm, has not been successful. The dust formation and material losses are reduced considerably, but the heat of friction becomes high, which causes a change of shape on the blade while the blade quickly becomes dull.
Ud fra disse negative erfaringer har man derfor prøvet en anden fremgangsmåde, d.v.s. med stillestående knive med samme udformning som ovenfor at afrette og opdele den bevægelige mineraluldsbane i længde- og tværretningen. Tekniken kan overraskende tillempes på tilfredsstillende måde på stive mineraluldsbaner. Ved bløde mineraluldsbaner derimod sker der en alt for stor iturivning. Ved forsøg er man dog kommet frem til en fremcrancrs-måde til skæring af disse bløde baner, hvilken fremgangsmåde ifølge opfindelsen er ejendommelig ved, at skæringen udføres med en skæreklinge, hvis skærehastighed i banens bevægelsesretning gøres noget større end banens bevægelseshastighed, og at der anvendes en skæreklinge, hvis æg har en udformning med en kløvende, ikke-spånaf- 3 1A3 7 3 δ skillende virkning.Therefore, from these negative experiences, a different approach has been tried, i.e. with stationary knives of the same design as above to straighten and divide the longitudinal and transverse mineral wool web. Surprisingly, the technique can be satisfactorily applied to rigid mineral wool webs. In the case of soft mineral wool webs, however, too much tearing occurs. By experiment, however, a method of cutting these soft webs has been found, the method of the invention being characterized in that the cutting is carried out with a cutting blade whose cutting speed in the direction of movement of the web is made somewhat greater than the moving speed of the web and a cutting blade whose eggs have a design having a splitting, non-chipping differentiating effect.
Det væsentlige i den nye fremgangsmåde ligger i, at skæreklingen har en mod ægkanten tilspidsende glat æg med skærende eller kløvende virkning i modsætning til den fortandede æg på en savklinge, hvor tænderne er udformet således, at de river spåner af ved skæringen. Som nævnt har man tidligere anvendt udelukkende savtandede klinger til skæring af mineraluldsbaner, og det er derfor helt uventet, at en jævn knivlignende æg med relativt lav skærehastighed formår at skære disse baner og tilvejebringe et pænt skærespor uden forstyrrende støvdannelse, hvor man samtidigt undgår materialespild.The essence of the new method is that the cutting blade has a smooth, tapered or cleaving egg, opposite to the toothed egg, on a saw blade where the teeth are designed to tear off chips at the cutting edge. As mentioned previously, only saw-tooth blades have been used for cutting mineral wool webs, and it is therefore quite unexpected that a smooth knife-like egg with relatively low cutting speed can cut these webs and provide a neat cutting groove without disturbing dust formation, while at the same time avoiding material waste.
Sammenlignet med den kendte savningsfremgangsmåde opnås der følgende fordele: - støvdannelsen bliver så ubetydelig, at støvudsugningsindretninger kan undværes - takket være den ringe friktionsvarme er klingens formforandringstendens helt elimineret - antallet af driftstimer for een og samme klinge uden skærpning er forøget med en faktor på 10.Compared with the known sawing method, the following advantages are obtained: - the dust formation becomes so insignificant that dust extraction devices can be avoided - thanks to the low frictional heat, the blade's change of tendency is completely eliminated - the number of operating hours for one and the same blade without sharpening is increased by a factor of 10.
Ifølge en fordelagtig udførelsesform i henhold til fremgangsmåden ifølge opfindelsen anvendes der en roterende skæreklinge og endvidere er det fordelagtigt om skæreklingens periferihastighed gøres ca. 1,1 - 10 gange så stor som banens bevægelseshastighed. Hastighedsforholdet til banens bevægelseshastighed bestemmes empirisk for hver bane og afhænger nærmest af banens tykkelse, densitet, bindemiddelmængden i banen og banens hårdhedsgrad.According to an advantageous embodiment according to the method according to the invention, a rotary cutting blade is used and furthermore it is advantageous if the cutting speed peripheral speed is made approx. 1.1 - 10 times the motion speed of the track. The velocity ratio of the motion velocity of the web is determined empirically for each web and depends most closely on the web thickness, density, the amount of binder in the web and the web hardness.
Hastighedsreguleringen af skæreklingens periferihastighed sker hensigtsmæssigt ved, at den styres synkront med banens hastighed.The speed control of the peripheral speed of the cutting blade is conveniently accomplished by controlling it synchronously with the speed of the web.
I det følgende skal en fordelagtig udførelsesform for opfindelsen beskrives nærmere under henvisning til vedlagte tegning i hvilken fig. 1 viser en indretning til udøvelse af fremgangsmåden ifølge opfindelsen set fra siden, fig. 2 viser indretningen ifølge fig. 1 i et snit langs linien II-II, og fig. 3-5 viser segmenter af forskellige skæreklinger 4 143738 og deres tværsnit til udøvelse af fremgangsmåden ifølge opfindelsen.In the following, an advantageous embodiment of the invention will be described in more detail with reference to the accompanying drawing in which FIG. 1 is a side view of a device for carrying out the method according to the invention; FIG. 2 shows the device according to FIG. 1 in a section along line II-II; and FIG. 3-5 show segments of various cutting blades 4 and their cross sections for carrying out the method according to the invention.
Mineraluldsbanen 1, som kommer fra hærdeovnen og den efterfølgende afkøling, bevæger sig fremad på en transportør 4 mod nogle skæreklinger 2, som afskærer det ujævne kantområde fra banen. Skæreklingernes akselhøjde er således afpasset, at skæreklingens æg 3 godt og vel når ned til den underste side af mineraluldsbanen. Bevægelsesretningen på skæreklingens periferi er den samme som banens bevægelsesretning. Skæreklingens periferihastighed bestemmes empirisk på basis af banens bevægelseshastighed og dens tykkelse, densitet og stivhed. Forholdet mellem skæreklingens periferihastighed og banens bevægelseshastighed vil ligge mellem 1,1 og 10, idet de højere forhold normalt tilpasses tyndere og blødere baner. Ved hjælp af f.eks. jævnstrømsdrift og kendte transmissionsindretninger opnår skæreklingen 2 og transportøren 4 disse på forhånd bestemte lineære bevægelseshastigheder. Ved skæring af een og samme type bane holdes disse hastigheder konstante.The mineral wool web 1, which comes from the curing furnace and the subsequent cooling, moves forward on a conveyor 4 towards some cutting blades 2 which cut off the uneven edge area from the web. The shaft height of the cutting blades is such that the cutting blade's eggs 3 reach the lower side of the mineral wool web. The direction of movement on the periphery of the cutting blade is the same as the direction of movement of the web. The circumferential speed of the cutting blade is determined empirically on the basis of the speed of movement of the web and its thickness, density and stiffness. The ratio of the cutting edge peripheral speed to the web speed of movement will be between 1.1 and 10, the higher ratios usually being adjusted to thinner and softer webs. Using e.g. DC operation and known transmission devices, the cutting blade 2 and the conveyor 4 achieve these predetermined linear rates of movement. When cutting one and the same type of web, these speeds are kept constant.
Skæreklingens æg kan være udformet eksempelvis som vist på fig. 3-5. Sædvanligvis anvendes den enkleste udformning ifølge fig. 3, som savner diskontinuiteter i æggens periferiretning, men udførelsesformerne ifølge fig. 4 og 5 med i periferiretningen forløbende halvcirkelformede udtagninger eller udad . cirkulære diskontinuiteter kommer på tale ved baner med ringere spaltbarhed. Fælles for disse udførelsesformer for æggen er naturligvis, således som det fremgår af æggens tværsnitsudformning, at den er kløvende og skærende og ikke en spånafskillende æg.The cutting blade's eggs may be formed, for example, as shown in FIG. 3-5. Usually, the simplest embodiment of FIG. 3, which lacks discontinuities in the peripheral direction of the egg, but the embodiments of FIG. 4 and 5 with semicircular recesses or outwards extending circumferentially. circular discontinuities come into play at trajectories of inferior cleavability. Common to these embodiments of the egg is, of course, as is evident from the cross-sectional design of the egg, that it is split and cutting, and not a chip separating egg.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI771942A FI56636C (en) | 1977-06-21 | 1977-06-21 | DAMMFRI SKAERNING AV EN ROERLIG MINERALULLSBANA |
| FI771942 | 1977-06-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK277278A DK277278A (en) | 1978-12-22 |
| DK143738B true DK143738B (en) | 1981-10-05 |
Family
ID=8510923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK277278AA DK143738B (en) | 1977-06-21 | 1978-06-20 | PROCEDURE FOR CUTTING A MOVABLE MINERAL WOOL |
Country Status (11)
| Country | Link |
|---|---|
| BE (1) | BE868338A (en) |
| CA (1) | CA1080117A (en) |
| CH (1) | CH631379A5 (en) |
| DE (1) | DE2826713C2 (en) |
| DK (1) | DK143738B (en) |
| FI (1) | FI56636C (en) |
| FR (1) | FR2395349A1 (en) |
| GB (1) | GB2000118B (en) |
| NL (1) | NL185398C (en) |
| NO (1) | NO148324C (en) |
| SE (1) | SE436990B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2542577B1 (en) * | 1983-03-14 | 1986-10-31 | Sae Esun | MACHINE FOR CUTTING LARGE FOODSTUFFS, ESPECIALLY TUNA |
| DE3423856A1 (en) * | 1984-06-28 | 1986-01-09 | Fritz 4830 Gütersloh Flötotto | Method and apparatus for cutting up a board, especially a board consisting of chipboard material |
| DE3927262A1 (en) * | 1989-08-18 | 1991-02-21 | Balke Axel | CIRCULAR OR ARCED MACHINE KNIFE |
| AU1806195A (en) * | 1994-02-22 | 1995-09-04 | Rockwool International A/S | Method of cutting insulation materials and blade suitable for use carrying out said method |
| SE534102C2 (en) * | 2009-07-02 | 2011-04-26 | Kapman Ab | Saw blades with sinusoidal teeth and knife and saw with such saw blades |
| CN111716438A (en) * | 2019-03-21 | 2020-09-29 | 山东万事达建筑钢品股份有限公司 | Mouth of a son step rock wool cutting equipment |
| CN115074981B (en) * | 2022-06-30 | 2023-05-30 | 绍兴金祥惠纺织印染有限公司 | Cloth miscellaneous line cutting device with dust removing function |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB566335A (en) * | 1943-06-15 | 1944-12-22 | Stirling Textile Ind Ltd | Improvements in or relating to machines for cutting materials into strips |
| DE1050249B (en) * | 1955-11-28 | 1959-02-05 | Fritz Witschi, Schaffhausen (Schweiz) | Process for the continuous production of zigzag cotton packs and apparatus for carrying out the process |
| FR1287458A (en) * | 1961-01-30 | 1962-03-16 | Method and machine for cutting long width pieces of fabric into ribbons or strips | |
| US3213728A (en) * | 1962-09-06 | 1965-10-26 | Owens Corning Fiberglass Corp | Slitter for mat materials |
| DE1301047B (en) * | 1964-12-19 | 1969-08-14 | Dunlop Ag | Method and cutting machine for cutting a steel cable car |
-
1977
- 1977-06-21 FI FI771942A patent/FI56636C/en not_active IP Right Cessation
-
1978
- 1978-06-16 NO NO782110A patent/NO148324C/en unknown
- 1978-06-19 NL NLAANVRAGE7806610,A patent/NL185398C/en not_active IP Right Cessation
- 1978-06-19 CH CH665578A patent/CH631379A5/en not_active IP Right Cessation
- 1978-06-19 DE DE2826713A patent/DE2826713C2/en not_active Expired
- 1978-06-20 CA CA305,801A patent/CA1080117A/en not_active Expired
- 1978-06-20 DK DK277278AA patent/DK143738B/en not_active Application Discontinuation
- 1978-06-20 GB GB7827402A patent/GB2000118B/en not_active Expired
- 1978-06-21 FR FR7820404A patent/FR2395349A1/en active Granted
- 1978-06-21 BE BE188751A patent/BE868338A/en not_active IP Right Cessation
- 1978-06-21 SE SE7807088A patent/SE436990B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL7806610A (en) | 1978-12-27 |
| GB2000118B (en) | 1982-01-20 |
| NO782110L (en) | 1978-12-22 |
| SE436990B (en) | 1985-02-04 |
| DE2826713A1 (en) | 1979-01-11 |
| CA1080117A (en) | 1980-06-24 |
| NL185398C (en) | 1990-04-02 |
| FR2395349A1 (en) | 1979-01-19 |
| FI56636C (en) | 1980-03-10 |
| BE868338A (en) | 1978-10-16 |
| DE2826713C2 (en) | 1987-01-15 |
| FI771942A (en) | 1978-12-22 |
| DK277278A (en) | 1978-12-22 |
| FR2395349B1 (en) | 1983-07-08 |
| NL185398B (en) | 1989-11-01 |
| CH631379A5 (en) | 1982-08-13 |
| FI56636B (en) | 1979-11-30 |
| GB2000118A (en) | 1979-01-04 |
| SE7807088L (en) | 1978-12-22 |
| NO148324C (en) | 1983-09-21 |
| NO148324B (en) | 1983-06-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PHB | Application deemed withdrawn due to non-payment or other reasons |