SE1200148A1 - Device for cutting pulp and paper webs - Google Patents
Device for cutting pulp and paper webs Download PDFInfo
- Publication number
- SE1200148A1 SE1200148A1 SE1200148A SE1200148A SE1200148A1 SE 1200148 A1 SE1200148 A1 SE 1200148A1 SE 1200148 A SE1200148 A SE 1200148A SE 1200148 A SE1200148 A SE 1200148A SE 1200148 A1 SE1200148 A1 SE 1200148A1
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- SE
- Sweden
- Prior art keywords
- pulp
- web
- pulleys
- instructions
- fracture
- Prior art date
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Classifications
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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
- B26D1/02—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 stationary cutting member
- B26D1/03—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 stationary cutting member with a plurality of cutting members
- B26D1/035—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 stationary cutting member with a plurality of cutting members for thin material, e.g. for sheets, strips or the like
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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
- B26D1/12—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
- B26D1/1435—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 for thin material, e.g. for sheets, strips or the like
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Description
Beskrivning av uppfinningen Uppfinningen innefattar en anordning och ett förfarande att bilda en ny typ av en massa-eller pappersprodukt. Anordningens konstruktion beskrivs längre fram. Description of the invention The invention comprises an apparatus and a method for forming a new type of a pulp or paper product. The construction of the device is described later.
I princip ersätter uppfinningen kända metoder att från en kontinuerligt arbetande avvattnings- och torkmaskin förpacka en massa-eller pappersbana. Altemativt kan sådan torkad sammanhängande bana rullas upp på tamburer innan banan bearbetas i enlighet med uppfinningen. Enligt uppfinningen levereras massan såsom en bal vars innehåll består av en sammanhällande och vikt massabana. Härefter beskrivs endast användning av uppfinningen for bearbetning av massa.In principle, the invention replaces known methods of packaging a pulp or paper web from a continuously operating dewatering and drying machine. Alternatively, such dried continuous web may be rolled up on drums before the web is processed in accordance with the invention. According to the invention, the pulp is delivered as a bale whose contents consist of a cohesive and folded pulp web. Hereinafter, only use of the invention for pulp processing is described.
En kännetecknande del av massaenheten är att dess obrutna längd är minst 10 gånger större än dess bredd. Med stöd av fig. 1-9 ska anordningen, förfarandet och produkten beskrivas. Det ska betonas att figurema utgör enkla skisser och är inte skalenlíga.A characteristic part of the pulp unit is that its unbroken length is at least 10 times greater than its width. With reference to Figs. 1-9, the device, the method and the product will be described. It should be emphasized that the ur guras are simple sketches and are not to scale.
Fig. l visar en sidovy av anordningens långsida med roterande trissor Fig. 2 visar en sidovy av anordningens ena koitsida samt del av drivdon till en trissa F ig. 3 visar anordningen drivaxel med trissor sett uppifrån Fig. 4 visar en sidovy av anordningens långsida med trissor justerade till olika höjder Fig. 5 visar en massabana som avförs från en avvattnings-och torkrnaskin enligt känd teknik Fig. 6 visar en del av en massabana som med anordningen erhåller brottanvisningar Fig. 7 demonstrerar exempel på djup av brottanvisningar i en del av en massabana F ig. 8 visar hur massabanan viks for att bilda en bal Fig. 9 visar en bal med vikt massa Anordningen konstruerad i enlighet med uppfinningen innefattar vitala delar som en hållare 1 med rektangulär form, roterande trissor 2 och en drivanordning 3. Hela anordningen kan betraktas som en kassett, som relativt lätt och snabbt kan ersätta en annan kassett. Sådan kassett kan täcka en hel upptagningsmaskins hela bredd eller endast del därav. Vidare är kassettens placering gentemot massabanan längdriktning justerbar. Således kan vinkeln variera från 85° till 90 °. Kännetecknande for uppfinningen är att kassetten är rörlig i sidled vilket markeras av streckade pilar i fig. l ,5, samt är rörlig utmed massabanans längdriktning.Fig. 1 shows a side view of the long side of the device with rotating pulleys. Fig. 2 shows a side view of one coit side of the device and part of the actuators of a pulley Figs. Fig. 3 shows the drive shaft with pulleys seen from above. Fig. 4 shows a side view of the long side of the device with pulleys adjusted to different heights. Fig. 5 shows a pulp web discharged from a dewatering and drying machine according to prior art. Fig. 6 shows a part of a pulp web with the device receiving fracture instructions Fig. 7 demonstrates examples of depth of fracture instructions in a part of a pulp web F ig. Fig. 9 shows how the pulp web is folded to form a bale. Fig. 9 shows a bale of folded pulp. The device constructed in accordance with the invention comprises vital parts such as a holder 1 with a rectangular shape, rotating pulleys 2 and a drive device 3. The whole device can be considered as a cassette, which can replace another cassette relatively easily and quickly. Such a cassette can cover the entire width of an entire recording machine or only part of it. Furthermore, the longitudinal position of the cassette relative to the pulp web is adjustable. Thus, the angle can vary from 85 ° to 90 °. Characteristic of the invention is that the cassette is movable laterally, which is marked by dashed arrows in fi g. 1, 5, and is movable along the longitudinal direction of the pulp web.
Vad beträffar rörelsen i sidled nyttjas detta företrädesvis vid kapning av massabanan.As far as the lateral movement is concerned, this is preferably used when cutting the pulp web.
Beträffande förflyttningen utmed massabanans längdriktning är rörelsens hastighet och längd betingad av massabanans hastighet. Detta arrangemang förhindrar en temporär inbromsning (kavling) av massabanan En ytterligare kännetecknande del av uppfinningen är att kassettens trissor år justerbara i höjdled, vilket demonstreras med pilar i fig.5. Inom ramen för uppfinningen kan , vid behov, trissorna även justeras i sidled. Trissoma har företrädesvis en gemensam drift (3) via koppling till en axel 4. I specialfall kan varje trissa drivas av var sin drivanordning. För drivning används elmotor, men detta utesluter inte användning av pneumatik.Regarding the fl surface along the longitudinal direction of the pulp web, the speed and length of the movement are conditioned by the speed of the pulp web. This arrangement prevents a temporary braking (rolling) of the pulp web. A further characteristic part of the invention is that the cassette pulleys are adjustable in height, which is demonstrated by arrows in fi g.5. Within the framework of the invention, the pulleys can also be adjusted laterally, if necessary. The pulleys preferably have a common drive (3) via coupling to a shaft 4. In special cases, each pulley can be driven by its own drive device. Electric motors are used for driving, but this does not preclude the use of pneumatics.
Förfarande vid tillämpning av anordningen I det följande visas användning av anordningen (kassetten) konstruerad enligt uppfinningen. I fig. 6 visas inte kassetten utan endast dess funktion med hjälp av blockpilar 5,6.Method of applying the device The following shows the use of the device (cassette) constructed according to the invention. I fi g. 6, the cassette is not shown, only its function using block arrows 5,6.
Enligt känd teknik förs en kontinuerligt frammatad och torkad massabana 7 från en massaupptagningsmaskin 8, som innefattar bl a momenten avvattning och vanligtvis torkning.According to the prior art, a continuously fed and dried pulp web 7 is fed from a pulp pick-up machine 8, which comprises, among other things, the steps of dewatering and usually drying.
Med hjälp av en kniv (ej visad i i fig.) huggs massabanan snabbt upp till ark vilka sedan staplas på varandra för bildning av en bal 9. För kapning av massabanan till ark kan kända anordningar, som exempelvis stålknivar, ersättas med anordningen konstruerad enligt uppfinningen. Vid sådan tillämpning av anordningen är alla trissor nedfällda så att de skär genom hela massabanans tjocklek, fig. 1.With the aid of a knife (not shown in Fig.), The pulp web is quickly chopped up into sheets which are then stacked on top of each other to form a bale 9. For cutting the pulp web into sheets, known devices, such as steel knives, can be replaced with the device constructed according to the invention. . In such an application of the device, all pulleys are lowered so that they cut through the entire thickness of the pulp web, fi g. 1.
En kännetecknande del av förfarandet enligt uppfinningen är att bearbeta massabanan med anordningar konstruerade i enlighet med uppfinningen och vilka anordningar skapar brottanvisningar 10-13 i rak vinkel (90 °) räknat mot massabanans längdriktning. För att skapa brottanvisningar vilka skär endast en bit in i massabanan i djupled justeras kassettens trissor i höjdled, fig. 4,6,7. Brottanvisningama (10-13) vilka enligt uppfinningen i djupled endast tränger ned en bit i massabanan (7), som kan vara t ex 2,0 mm tjock, fig. 7.A characteristic part of the method according to the invention is to process the pulp web with devices constructed in accordance with the invention and which devices create fracture instructions 10-13 at right angles (90 °) calculated against the longitudinal direction of the pulp web. To create fracture instructions which cut only a bit into the pulp web in depth, the cassette pulleys are adjusted in height, fi g. 4,6,7. The fracture instructions (10-13) which according to the invention in depth only penetrate a piece into the pulp web (7), which can be, for example, 2.0 mm thick, fi g. 7.
För att skapa en perforerad massabana höjs eller sänks anordningens trissor i förhållande till varandra enligt vad som visas i fig. 5. Därvid skär endast vissa trissor (i princip varannan trissa) genom massabanan.To create a perforated mass web, the pulleys of the device are raised or lowered relative to each other as shown in fi g. 5. In this case, only certain pulleys (in principle every other pulley) cut through the pulp web.
En ytterligare kännetecknande del av förfarandet är att brottanvisningarna (10-13) med förutbestämd frekvens växelvis markeras på båda sidor av massabanan, fig.7. Således markeras en brottanvisning (exempelvis 10) först på ena sidan av massabanan och vid samma frekvens och efter bestämd tidförskjutning markeras en brottanvisning (exempelvis 1 1) på massabanans motsatta sida.A further characteristic part of the method is that the fracture instructions (10-13) with predetermined frequency are alternately marked on both sides of the pulp web, Fig. 7. Thus, a fracture indication (for example 10) is first marked on one side of the pulp web and at the same frequency and after a certain time offset, a fracture indication (for example 1 1) is marked on the opposite side of the pulp web.
Som komplement till användning av kassetten för bildning av brottanvisningar kan användas ett fuktstråk som appliceras tvärs över massabanan. Dessa fuktstråk appliceras på samma ställen och med samma frekvens som brottanvisningama skapade med anordningen enligt uppfinningen.. Företrädesvis används rent vatten till bildning av fuktstråket. För att förstärka effekten av vattnet kan tillsättas vätmedel. Aggregat för befuktning av massabanan kan integreras med kassetten.As a complement to the use of the cassette for forming fracture instructions, a moisture strip can be used which is applied across the pulp web. These moisture strips are applied in the same places and with the same frequency as the fracture instructions created with the device according to the invention. Preferably, clean water is used to form the moisture strip. To enhance the effect of the water, wetting agents can be added. Units for wetting the pulp web can be integrated with the cassette.
Komplementet med fuktstråk minskar torrhalten i ringa omfattning. Enligt mätningar med endast 0,13 % vikts-%.. Denna förändring i torrhalt minskade till nära noll innan den vikta massan i balforrn emballerades med papp.The complement with moisture stripes reduces the dry content to a small extent. According to measurements with only 0.13% by weight .. This change in dry matter content decreased to almost zero before the folded mass in the bale form was packed with cardboard.
Massabanans längd kan teoretiskt bli hur lång som helst emedan massan kontinuerligt matas ut från massaupptagningsmaskinen eller från en rulle upplindad på en tambur (ej visad i fig.).The length of the pulp web can theoretically be any length because the pulp is continuously fed out from the pulp picking machine or from a roll wound on a drum (not shown in fi g.).
Indirekt bestäms den sammanhängande längden av den balvikt som önskas och som vanligtvis ligger på några hundra kilon innan massabanan kapas.Indirectly, the continuous length is determined by the desired bale weight, which is usually a few hundred kilos before the pulp web is cut.
Oavsett metod att åstadkomma brottanvisningar i den kontinuerligt löpande massabanan viks massabanan vid dess brottanvisningar skapade av kassettens trissor. Därvid erhålls en växelvis exponering av brottanvisningama (lO-12) på var sin motstående sida av den bal som bildas, vilket schematiskt demonstreras i fig. 8. Massabanan (7) viks så att det bildas en sicksackforrnad bana, fig.8, som i höjdled samlas för att efter kapning bilda en färdig bal 14 med vikt massa.Regardless of the method of producing fracture instructions in the continuously running pulp web, the pulp web is folded at its fracture instructions created by the cassette pulleys. An alternate exposure of the fracture indications (10-12) is obtained on each opposite side of the bale that is formed, which is schematically demonstrated in fi g. 8. The pulp web (7) is folded so that a zigzag-shaped web, fi g.8, is formed, which gathers in height to form, after cutting, a finished bale 14 with folded pulp.
Som alternativ till beskrivet förfarande kan väljas att först vika massabanan och därefter använda tidigare beskrivna teknik enligt uppfinningen för att erhålla en bal med vikt massa.As an alternative to the described method, it can be chosen to first fold the pulp web and then use previously described techniques according to the invention to obtain a bale with folded pulp.
Fördelar Vid användning av föreliggande uppfinning reduceras många av de problem som är förenat med tillämpning av känd teknik. Dessutom kan tillverkas produkter med högre kvalitet emedan antalet s k klippråttor (förhârdningar i arkens ytterkanter) väsentligen minskar.Advantages Using the present invention reduces many of the problems associated with the application of the prior art. In addition, higher quality products can be manufactured because the number of so-called cutting rats (hardening in the outer edges of the sheets) is significantly reduced.
Vidare erhålls betydande vinster ur miljösynpunkt eftersom vikmassan som fraktas i balform gör det möjligt, att per yt/volymenhet, transportera minst 30 vikts-% mera massafiber i jämförelse med rullmassa. Därtill förloras vid känd teknik lasteffektivitet p g a att massan rullas upp på en cylinder av vanligtvis kartong. Denna förlust kan uppskattas till minst ytterligare l() volym/vikts-% om cylindems ytterdiameter är 120 mm.Furthermore, significant gains are obtained from an environmental point of view because the folding mass that is transported in bale form makes it possible, per surface / volume unit, to transport at least 30% by weight more mass fi ber in comparison with rolling mass. In addition, in the prior art, load efficiency is lost due to the mass being rolled up on a cylinder of usually cardboard. This loss can be estimated at at least an additional 1 () volume / weight% if the outer diameter of the cylinder is 120 mm.
Dessutom minskar risken för personskador då kubiska balar är säkrare att frakta än rullar.In addition, the risk of personal injury is reduced as cubic bales are safer to transport than rolls.
En ytterligare fördel är, att det är relativt lätt, att integrera förfarandet enligt uppfinningen med befintliga massaupptagningsmaskiner massor i rullform. därvid erhåls en radikal minskning av ljudet som uppkommer vid kapning med stålbila.A further advantage is that it is relatively easy to integrate the method according to the invention with considerable pulp picking machines in roll form. this results in a radical reduction in the noise that occurs when cutting with a steel truck.
Det är vidare möjligt att nyttja förfarandet för både våt massa med torrhalter >45 % och massor med torrhalter >85%.It is further possible to use the process for both wet pulp with dry contents> 45% and pulps with dry contents> 85%.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1200148A SE536426C2 (en) | 2012-03-08 | 2012-03-08 | Device for cutting pulp and paper webs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1200148A SE536426C2 (en) | 2012-03-08 | 2012-03-08 | Device for cutting pulp and paper webs |
Publications (2)
Publication Number | Publication Date |
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SE1200148A1 true SE1200148A1 (en) | 2013-09-09 |
SE536426C2 SE536426C2 (en) | 2013-10-22 |
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SE1200148A SE536426C2 (en) | 2012-03-08 | 2012-03-08 | Device for cutting pulp and paper webs |
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SE (1) | SE536426C2 (en) |
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- 2012-03-08 SE SE1200148A patent/SE536426C2/en not_active IP Right Cessation
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SE536426C2 (en) | 2013-10-22 |
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