EP0922660B1 - Rollenschneider und Verfahren zum Aufteilen einer Materialbahn in Teilbahnen - Google Patents
Rollenschneider und Verfahren zum Aufteilen einer Materialbahn in Teilbahnen Download PDFInfo
- Publication number
- EP0922660B1 EP0922660B1 EP98121646A EP98121646A EP0922660B1 EP 0922660 B1 EP0922660 B1 EP 0922660B1 EP 98121646 A EP98121646 A EP 98121646A EP 98121646 A EP98121646 A EP 98121646A EP 0922660 B1 EP0922660 B1 EP 0922660B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- partial
- web
- winding
- partial webs
- suction
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
- B65H19/2284—Simultaneous winding at several stations, e.g. slitter-rewinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/414—Winding
- B65H2301/4148—Winding slitting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/414—Winding
- B65H2301/4148—Winding slitting
- B65H2301/41486—Winding slitting winding on two or more winding shafts simultaneously
- B65H2301/414863—Winding slitting winding on two or more winding shafts simultaneously directly against central support roller
Definitions
- the invention relates to a slitter with a Feed section for feeding a material web, a Cutting section for generating partial webs Cutting the material web in the longitudinal direction, a winding section for winding the partial webs into partial web rolls, which has a driven roller, at least over part of its circumference from the partial webs is wrapped, and with a train interruption device.
- the invention further relates to a Method for dividing a material web into partial webs, in which the material web in the longitudinal direction to partial webs cut and the partial webs to partial web rolls be wound up and between the cutting and the An interruption in the web train takes place.
- the invention is based on a paper web described as an example of a material web. she is but not limited to this. Similar problems arise when cutting paper-like products, such as cardboard, or of plastic or metal foils.
- Paper webs are often used today on paper machines produced, whose working width is larger than that of Users, such as printers, desired Width. For this reason, the paper webs in one of the last manufacturing steps to the corresponding one Cut width and then rolled up become. It is known to pass through the paper web a cutting station or section conduct, in which knives are arranged. The paper web, more precisely, the partial webs after cutting arise with a certain tension pulled through the cutting section so a clean cut can be created. This tension however, in many cases does not agree with the Tension with which the partial webs on the partial web rolls should be wrapped.
- Pinching the material web between the central roller and the free running role may have an influence that can no longer be neglected on the quality of the wound partial webs.
- the free running Role with considerable force to the extent of Central roller can be pressed. This can lead to markings or other damage to the partial webs. It is also difficult to apply the contact pressure over the to keep the entire width of the central roller constant, so that the winding hardness of simultaneously wound partial web rolls may well differ.
- the invention has for its object the division make the material web in partial webs so that the railway interruption has a minor impact on the Quality of the partial web rolls.
- This task is the beginning of a slitter mentioned type in that the web train interruption device by an active one during winding Suction section of the driven roller is formed.
- the partial webs of the material web are thus winding sucked onto the surface of the roller. So that results there is sufficient friction between the Partial webs and the surface of the roller. This friction is created over a surface area that is on is larger than a circumferential area on which a pinch roller rests. Usually arises there just one nip.
- the normal force with which the partial webs are held on the circumference of the roller results result from the product between suction pressure and area. One can get considerable here due to the larger area Achieve pressure force values so that the Partial webs can no longer slide on the roller. So you can pull the tension on the roller Apply partial webs that are necessary for cutting.
- the partial webs are behind the suction section so available that in the necessary voltage range practically every tension and therefore every Winding tension can be adjusted. Holding on the partial web with the help of negative pressure is very gentle. The clamping force is due to the air on top generated so that markings, bruises or others There is practically no fear of damage to the partial webs are.
- the central roller forms as a suction roller.
- the suction pressure is only used to Beginning of the partial webs with a slow pull-in speed from approx. 20 m / min to the respective Lead winding positions in which empty roll cores are arranged.
- the Suction pressure switched off.
- the suction pressure even during winding with an operating speed of well over 1,000 m / min is preserved, so that the partial webs during the Winding are held on the circumference of the roller.
- the suction section preferably ends in the circumferential direction in a place where the partial webs leave the roller. If you only looked at a cross section of the roller, the place would be formed by a point. That I the roller in the axial direction over a certain length extends, the term "place" was chosen. If the suction pressure stops before this place, then you can Remove partial webs from the roller in this location without that you have to work against the suction pressure. Furthermore With this configuration, the economy increases of the roll cutter. It is enough that Maintain suction pressure in the suction section, which in this case is closed, so to speak.
- At least one partial web preferably leaves the roll immediately behind the place.
- the at least one Partial web in the direction of gravity from above to the place is led.
- the partial web rolls are preferably in contact with the roller.
- the roller can then also be used as a pressure roller can be used to influence the winding hardness. It can be recommended that the partial web rolls with an adjustable force against the roller be pressed.
- the partial web rolls preferably have a center drive on. With the help of the center drive you can the tension in the partial webs required for winding to adjust. Because of the train interruption one is largely free here, so that the winding tension is independent selected from the voltage required for cutting can be.
- the suction section is advantageously adjustable Vacuum operated. You can use the suction pressure adapt a different material web. If for example, to cut a larger tension is necessary, then the suction pressure can be increased, the frictional connection between the roller and the partial webs to improve. Conversely, for example with very thin papers, the suction pressure can be reduced, which on the one hand is gentle on the material web affects and also helps to reduce energy consumption reduce. Overall, therefore, for each quality choose optimal setting. On the other hand you can Adapt suction pressure to different operating conditions, for example winding or setting up.
- the negative pressure when winding up is larger than when setting up.
- winding up it’s about the friction between the necessary traction for the partial webs and the roller to be transferred to the partial webs.
- setting up i.e. when feeding the partial web starts to the roll cores (or other starting conditions for the partial web reels) on the other hand, it is sufficient if the partial web starts be held on the roller with a small force.
- An operator is then able to Take part of the beginning of the web from the roller and send it to the Create roll cores. Even with automatic processes one becomes the vacuum in the suction section in this Select the small area, for example to lift the To enable partial web starts from the roller if the partial web starts against a sticky surface of the Winding cores are pressed.
- the partial web rolls are advantageous in at least two arranged different winding position groups, wherein a suction chamber is assigned to each winding position group is, of which the first in the running direction of the partial webs Is part of the train interruption device.
- a suction chamber is assigned to each winding position group is, of which the first in the running direction of the partial webs Is part of the train interruption device.
- the Suction section which in the running direction of the partial webs the first lies, used to interrupt the train.
- a mechanical web guiding device is advantageous arranged in the running direction between the suction chambers. You therefore do not have the negative pressure when setting up let more work over the entire circumference of the roller. After leaving the first suction section, the Path guiding device the beginning of the partial webs to be continued, take and by lead next suction section, where the vacuum then again to stick the beginning of the partial web to the Roller leads.
- the task is in a method of the aforementioned Art solved in that the partial webs during of winding on the periphery of a driven roller become.
- suction allows a frictional connection between the roller and the partial webs, which is so large that the roller has the necessary drive power for pulling the material web through the cutting section can muster. Holding by friction, where the atmospheric air is used will cause the partial webs to be pressed against the roller, is very gentle. You can also get one use a relatively large peripheral portion of the roller, so that you can generate relatively large frictional forces.
- the suction pressure is preferably greater during winding than when setting up the partial web rolls. Accordingly you can set up, i.e. guiding the material web and the resulting partial webs through the Cutting section and the beginning of the partial web the winding cores, perform without applying greater forces to have to lift the partial webs off the roller.
- the partial web rolls are advantageously driven centrally. If each partial web roll has a center drive, then you can change the winding tension of each Set partial webs relatively freely. The winding tensions then arise, for example, under the influence the difference between the peripheral speeds of Part web roll and roller.
- the suction advantageously ends before the partial webs be lifted off the surface of the roller.
- the suction pressure then no longer has any influence on the winding tension.
- a slitter winder 1 has a feed section 2 in which a material web 3, for example a paper web unwound from a jumbo or parent roll, is fed.
- the material web 3 passes through then a cutting section 4 in which they pass through themselves known means, for example cutting knives 5, 6 in Partial webs 7 is divided.
- the cutting knives 5, 6 cut the material web 3 in the longitudinal direction. A certain pulling force is required for this.
- This Traction is applied via a roller 8, which as Suction roll is formed.
- the roller 8 has a roller jacket 9 which is made of Exaggerated for reasons of clarity is.
- a first suction chamber 11 and a second suction chamber 12 arranged over a Suction port 13 can be supplied with negative pressure. With in other words, air from the suction chambers becomes permanent 11, 12 suctioned off.
- the two suction chambers 11, 12 extend in the circumferential direction each only over a part of the Roller 8.
- the suction chamber 11 points in the circumferential direction two boundary walls 14, 15.
- the suction chamber 12 has boundary walls 16, 17. All boundary walls 14-17 are about not shown Sealant sealed on the inner circumference of the roll shell 9.
- Both suction chambers 11, 12 extend over angular ranges in the order of 60 °. This angle is however not mandatory. You can also get bigger or smaller ones choose an angle, especially for the suction chamber 11 ensures that the suction pressure in the Suction chamber 11 together with the surface of the roller 8, which is determined by the angle is sufficient to the Partial webs 7 so strongly against the surface of the roller 8 to press that the resulting frictional connection is sufficient, to increase the pulling force necessary for cutting transfer.
- Partial web rolls 18, 19 of adjacent partial webs are in different winding position groups 20, 21 arranged. In each winding position group 20, 21, the individual partial webs 18, 19 have one certain axial distance from each other, can otherwise but the same or approximately the same winding axis exhibit.
- the partial web rolls 18, 19 of the two Winding position groups 20, 21 are on each other Gap arranged.
- the partial web rolls 18, 19 are on roll cores 21, 22 wound, which are driven, for example by retractable mandrels, which in turn have a drive. This is only schematic indicated in the figure.
- the roll cores are on the one hand in one Position shown in which the partial web rolls 18, 19th have already reached a certain extent. they are (for the purpose of distinguishing without drive) on the other hand drawn in a position where the winding the partial web rolls 18, 19 are just beginning.
- the present Embodiment assumed that the centers or axes of rotation of the roller 8 and the roller cores 21, 22 and thus the partial web rolls 18, 19 on one horizontal plane 24 are arranged.
- the centers the roll cores 22, 23 move horizontally during winding in this level 24 Point of contact between the partial web rolls 18, 19 (or at the start of winding between the roll cores 22, 23) arranged in this plane 24. these are then also the places where the partial webs roll 8 leave.
- the suction chamber 11 now ends somewhat in the circumferential direction before this level 24, i.e. the lower boundary wall 14 forms an angle 25 with the plane 24, which however can be relatively small, for example in the Order of magnitude in the range of 1 ° to 10 °. This ensures that the vacuum in the Suction chamber 11 can no longer act on the partial web, if it is to be lifted off the roller 8 in order to the partial web roll 19 to be wound up.
- the Suction section formed by the suction chamber 11 ends at the location where the partial webs 7 be lifted off the roller 8.
- the suction chamber 12 can over the Extend location where the partial webs 7 removed be wound up on the web rolls 18 become.
- the reason for this is that the Suction chamber 12 is used exclusively for the partial webs, which are wound onto the partial web rolls 18, to hold on to the roller 8 until it on the or Roll cores 22 arrive where they are glued when setting up become.
- the suction chamber 11 can also be used for this purpose become.
- the negative pressure in the suction chamber 11 adjustable to different values. In operation, so when winding, it must be set so high that the frictional engagement between the partial webs 7 and the roller 8 is sufficient to the tension required for cutting applied. This is not necessary when setting up. It is sufficient here to start the partial lifts up to lead to the roll cores 23.
- Roll 25 provided in the direction of a double arrow, So in the circumferential direction around the roller 8, movable is. With the help of roll 25, the beginnings can of the partial webs 7, which are wound onto the partial web rolls 18 are detected and transported to the suction chamber 12 become. There they can be sucked in and thus be held on the surface of the roller 8.
Landscapes
- Replacement Of Web Rolls (AREA)
Description
- die einzige Figur
- eine schematische Seitenansicht eines Rollenschneiders.
Claims (14)
- Rollenschneider mit einem Zuführabschnitt zum Zuführen einer Materialbahn (3), einem Schneidabschnitt (4) zum Erzeugen von Teilbahnen (7) durch Schneiden der Materialbahn (3) in Längsrichtung, einem Wickelabschnitt zum Aufwickeln der Teilbahnen (7) zu Teilbahnrollen, der eine angetriebene Walze (8) aufweist, die zumindest über einen Teil ihres Umfangs (9) von den Teilbahnen umschlungen ist, und mit einer Bahnzugunterbrechungseinrichtung, dadurch gekennzeichnet, daß die Bahnzugunterbrechungseinrichtung durch einen beim Wickeln aktiven Saugabschnitt (11) der angetriebenen Walze (8) gebildet ist.
- Rollenschneider nach Anspruch 1, dadurch gekennzeichnet, daß der Saugabschnitt (11) in Umfangsrichtung vor einem Ort (24) endet, in dem die Teilbahnen (7) die Walze (8) verlassen.
- Rollenschneider nach Anspruch 2, dadurch gekennzeichnet, daß mindestens eine Teilbahn (7) die Walze (8) unmittelbar hinter dem Ort (24) verläßt.
- Rollenschneider nach Anspruch 3, dadurch gekennzeichnet, daß die mindestens eine Teilbahn (7) in Schwerkraftrichtung von oben an den Ort (24) geführt ist.
- Rollenschneider nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Teilbahnrollen (18, 19) an der Walze (8) anliegen.
- Rollenschneider nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Teilbahnrollen (18, 19) einen Zentrumsantrieb (27, 28) aufweisen.
- Rollenschneider nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Saugabschnitt (11) mit einem einstellbaren Unterdruck betreibbar ist.
- Rollenschneider nach Anspruch 7, dadurch gekennzeichnet, daß der Unterdruck beim Aufwickeln größer ist als beim Rüsten.
- Rollenschneider nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Teilbahnrollen (18, 19) in mindestens zwei verschiedenen Wickelpositionsgruppen (20, 21) angeordnet sind, wobei jeder Wickelpositionsgruppe eine Saugkammer (11, 12) zugeordnet ist, von denen die in Laufrichtung der Teilbahnen (7) erste Bestandteil der Bahnzugunterbrechungseinrichtung ist.
- Rollenschneider nach Anspruch 1, dadurch gekennzeichnet, daß eine mechanische Bahnführungseinrichtung (25) in Laufrichtung zwischen den Saugkammern (11, 12) angeordnet ist.
- Verfahren zum Aufteilen einer Materialbahn (3) in Teilbahnen (7), bei dem die Materialbahn (3) in Längsrichtung zu Teilbahnen (7) geschnitten und die Teilbahnen zu Teilbahnrollen aufgewickelt werden und zwischen dem Schneiden und dem Aufwickeln eine Bahnzugunterbrechung erfolgt, dadurch gekennzeichnet, daß die Teilbahnen während des Aufwickelns am Umfang (9) einer angetriebenen Walze (8) angesaugt werden.
- Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß der Saugdruck beim Aufwickeln größer als beim Rüsten der Teilbahnrollen ist.
- Verfahren nach Anspruch 11 oder 12, dadurch gekennzeichnet, daß die Teilbahnrollen zentrisch angetrieben werden.
- Verfahren nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, daß das Ansaugen endet, bevor die Teilbahnen von der Oberfläche der Walze abgehoben werden.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19755267 | 1997-12-12 | ||
DE19755267A DE19755267C2 (de) | 1997-12-12 | 1997-12-12 | Rollenschneider und Verfahren zum Aufteilen einer Materialbahn in Teilbahnen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0922660A1 EP0922660A1 (de) | 1999-06-16 |
EP0922660B1 true EP0922660B1 (de) | 2002-08-07 |
Family
ID=7851687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98121646A Expired - Lifetime EP0922660B1 (de) | 1997-12-12 | 1998-11-12 | Rollenschneider und Verfahren zum Aufteilen einer Materialbahn in Teilbahnen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0922660B1 (de) |
DE (2) | DE19755267C2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002092978A1 (en) | 2001-05-11 | 2002-11-21 | Aktiebolaget Electrolux | Crankcase scavenged internal combustion engine |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3188016A (en) * | 1963-01-14 | 1965-06-08 | Cameron Machine Co | Differential drive to surface of individual rewind rolls |
DE2920707C2 (de) * | 1979-05-22 | 1990-05-31 | Jagenberg-Werke AG, 4000 Düsseldorf | Verfahren und Doppeltragwalzen-Wickelmaschine zum automatischen Trennen und Anwickeln einer Warenbahn |
DE4012979A1 (de) * | 1990-04-24 | 1991-11-07 | Jagenberg Ag | Verfahren und vorrichtung zum aufwickeln von materialbahnen, insbesondere papier- oder kartonbahnen |
DE4115406A1 (de) * | 1991-05-10 | 1992-11-12 | Jagenberg Ag | Wickelmaschine zum aufwickeln von materialbahnen |
DE4409036A1 (de) * | 1994-03-17 | 1995-09-21 | Jagenberg Ag | Verfahren und Wickelmaschine zum Aufwickeln einer Materialbahn, insbesondere einer Papier- oder Kartonbahn |
DE4414396C3 (de) * | 1994-04-26 | 2002-02-07 | Jagenberg Papiertech Gmbh | Trag- oder Stützwalze für eine Wickelmaschine |
-
1997
- 1997-12-12 DE DE19755267A patent/DE19755267C2/de not_active Expired - Fee Related
-
1998
- 1998-11-12 EP EP98121646A patent/EP0922660B1/de not_active Expired - Lifetime
- 1998-11-12 DE DE59805091T patent/DE59805091D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19755267C2 (de) | 1999-11-25 |
EP0922660A1 (de) | 1999-06-16 |
DE19755267A1 (de) | 1999-06-24 |
DE59805091D1 (de) | 2002-09-12 |
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