EP0521396B1 - Method and device for winding and crosscutting a web - Google Patents
Method and device for winding and crosscutting a web Download PDFInfo
- Publication number
- EP0521396B1 EP0521396B1 EP92110751A EP92110751A EP0521396B1 EP 0521396 B1 EP0521396 B1 EP 0521396B1 EP 92110751 A EP92110751 A EP 92110751A EP 92110751 A EP92110751 A EP 92110751A EP 0521396 B1 EP0521396 B1 EP 0521396B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- winding
- web
- core
- contact roller
- wound
- 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
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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
- B65H19/2207—Changing the web roll in winding mechanisms or in connection with winding operations the web roll being driven by a winding mechanism of the centre or core drive type
- B65H19/2215—Turret-type with two roll supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2408/00—Specific machines
- B65H2408/20—Specific machines for handling web(s)
- B65H2408/23—Winding machines
- B65H2408/231—Turret winders
- B65H2408/2313—Turret winders with plurality of reel supporting or back-up rollers travelling around turret axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2408/00—Specific machines
- B65H2408/20—Specific machines for handling web(s)
- B65H2408/23—Winding machines
- B65H2408/231—Turret winders
- B65H2408/2315—Turret winders specified by number of arms
- B65H2408/23152—Turret winders specified by number of arms with two arms
Definitions
- the invention relates to a device for winding and cross-cutting a running material web, which is wound on a drivable and brakable winding tube until a certain winding diameter is reached, wherein a contact roller presses the material web against the winding tube by means of a swivel arm, and before an unwound one , is transferred over part of its circumference wrapped by the material web subsequent winding tube in the winding position, a cutting member cuts the material web between the wound and the still unwound winding tube perpendicular to the direction of travel.
- the material web can be, for example, a paper web, a film web or a plastic web provided with a magnetic coating.
- the task is to separate the material web wound on a winding tube with a separating knife after reaching a certain winding diameter and to wind the new material web beginning that has arisen onto an empty winding tube while the full package is removed and replaced by an empty winding tube.
- the almost completely wound winding tube leaves its winding position.
- a new sleeve to be wound takes its place.
- the running web is cut between the new and wound winding tube and lies against the new tube, whereupon the process just mentioned begins again.
- the finished winding runs out in order to be removed. It has been shown that the outermost winding layer package in particular often shifts or is axially displaceable relative to the rest of the winding, particularly in the case of smooth material webs and at high machine speeds from the range of 300 m / min. This telescoping of the winding, that is to say deviations from the winding with the same edge, can damage parts of the winding through deformations.
- a device of the generic type mentioned at the outset is known from GB-A 2 126 564.
- a contact roller on the winding roll to be wound up, in order to squeeze air out between the layers and to prevent the web layers from being blown out to the side.
- a winding device is known in which a driven pressure roller abuts the winding in order to overcome the inertia of the winding roller during the winding process. After the full winding diameter has been reached, this pressure roller is pivoted away from the winding and swiveled onto a winding core to be rewound in order to fix the new start of the web on the core there after the web has been separated.
- the invention had for its object to achieve a stabilization of the winding pattern when braking the full winding reel to a standstill, the run-out time of the reel should also be reduced in order to achieve a quick reel change in a turret winder.
- a material web (2) coming from a coating device (not shown) runs over deflection rollers (1, 3, 4) to the winding and cross-cutting device.
- a contact roller (5) places the material web (2) on the winding (6).
- a second contact roller (7) which is rotatably mounted on an arm (17), stabilizes the winding.
- An identical one Device, namely contact roller (12) and arm (16) is provided in an analogous manner for the fully wound winding core (11).
- the entire device (18) is turned so that the sketched state is reached. Then the material web between the empty winding tube (6) and the deflecting roller (8) is separated by a cross cutting device (15), and the newly created web start is simultaneously applied to the winding tube (6). Then the full roll wound on the winding tube (11) is braked on the outside diameter by the braked contact roller (12) to a standstill. The contact roller remains pressed against the reel for a selected period of time until it is pivoted against an empty winding tube in order to change the filled reel. The winder remains in this position until the winding core (6) is almost filled and the turning process described begins again.
- each of the winding tubes is designed to be drivable and brakable and that the contact rollers (7, 12) which are present in addition to the usual contact roller, as in the already mentioned EP-A-0 503 363, can be braked.
- the contact roller (12) acting on the full winding is braked with a braking torque which is suitable for preventing the winding from telescoping.
- the size of the braking torque to be selected depends on the moment of inertia of the winding and the torque always acting on the winding tube, which results from the bearing friction of the tube bearing, the friction in the drive motor and the transmission gear.
- an approximately 70 cm wide plastic web consisting of 15 ⁇ m thick polyethylene terephthalate, which was provided with a 3 ⁇ m thick magnetic coating, was used at a speed of 500 m / min. wound up.
- the above-mentioned web which had a length of 10,000 m, could be brought to a standstill within 5 seconds without the outermost winding layers being blurred.
- the winding behavior was excellent, the web also showed on the outer layers after the deduction. There are no scratches or damage to the glue point or the end and beginning of the web.
Landscapes
- Replacement Of Web Rolls (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Aufwickeln und Querschneiden einer laufenden Materialbahn, die solange auf einer antreibbaren und bremsbaren Wickelhülse aufgewickelt wird, bis ein bestimmter Wickeldurchmesser erreicht ist, wobei eine Kontaktwalze mittels eines Schwenkarms die Materialbahn an die Wickelhülse andrückt und wobei, bevor eine noch unbewickelte, über einen Teil ihres Umfangs von der Materialbahn umschlungene nachfolgende Wickelhülse in die Wickelposition überführt wird, ein Schneidorgan die Materialbahn zwischen der bewickelten und der noch unbewickelten Wickelhülse senkrecht zur Laufrichtung durchtrennt.The invention relates to a device for winding and cross-cutting a running material web, which is wound on a drivable and brakable winding tube until a certain winding diameter is reached, wherein a contact roller presses the material web against the winding tube by means of a swivel arm, and before an unwound one , is transferred over part of its circumference wrapped by the material web subsequent winding tube in the winding position, a cutting member cuts the material web between the wound and the still unwound winding tube perpendicular to the direction of travel.
Derartige, meistens vollautomatisch ablaufende Vorrichtungen sind aus zahlreichen Veröffentlichungen bekannt, beispielsweise aus dem US-Patent 3 918 654, der EP 0 395 830 sowie der EP-A-0 503 363, veröffentlicht am 16.09.92. Die Materialbahn kann beispielsweise eine Papierbahn, eine Filmbahn oder eine mit einer magnetischen Beschichtung versehene Kunststoffbahn sein. Bei den beschriebenen Vorrichtungen besteht die Aufgabe, die auf einer Wickelhülse aufgewickelte Materialbahn nach Erreichen eines bestimmten Wickeldurchmessers mit einem Trennmesser abzutrennen und den entstandenen neuen Materialbahnanfang auf eine leere Wickelhülse aufzuwickeln, während der volle Wickel abgenommen und durch eine leere Wickelhülse ersetzt wird. Zu diesem Zweck verläßt die fast vollständig bewickelte Wickelhülse ihre Aufwickelposition. An ihre Stelle tritt eine neu zu bewickelnde Hülse. Die laufende Bahn wird zwischen neuer und bewickelter Wickelhülse gekappt und legt sich an die neue Hülse an, worauf der eben genannte Vorgang von neuem beginnt.Such, mostly fully automatic, devices are known from numerous publications, for example from US Pat. No. 3,918,654, EP 0 395 830 and EP-A-0 503 363, published on September 16, 1992. The material web can be, for example, a paper web, a film web or a plastic web provided with a magnetic coating. In the devices described, the task is to separate the material web wound on a winding tube with a separating knife after reaching a certain winding diameter and to wind the new material web beginning that has arisen onto an empty winding tube while the full package is removed and replaced by an empty winding tube. For this purpose, the almost completely wound winding tube leaves its winding position. A new sleeve to be wound takes its place. The running web is cut between the new and wound winding tube and lies against the new tube, whereupon the process just mentioned begins again.
Nach dem Trennvorgang läuft der fertige Wickel aus, um abgenommen werden zu können. Dabei hat es sich gezeigt, daß sich besonders das äußerste Wickellagenpaket oft gegenüber dem restlichen Wickel axial verschiebt beziehungsweise verschiebbar ist, besonders bei glatten Materialbahnen und bei hohen Maschinengeschwindigkeiten ab dem Bereich von 300 m/min. Dieses Teleskopieren des Wickels, das heißt Abweichungen vom kantengleichen Wickeln, können Teile des Wickels durch Deformationen beschädigen.After the separation process, the finished winding runs out in order to be removed. It has been shown that the outermost winding layer package in particular often shifts or is axially displaceable relative to the rest of the winding, particularly in the case of smooth material webs and at high machine speeds from the range of 300 m / min. This telescoping of the winding, that is to say deviations from the winding with the same edge, can damage parts of the winding through deformations.
Untersuchungen der Anmelderin haben gezeigt, daß es besonders für empfindliche Materialbahnen wie Magnetbänder von großer Wichtigkeit ist, den gefüllten Wickel nach dem Trennvorgang stabil zu halten, da ja jetzt infolge der getrennten Materialbahn der Wickelzug fehlt.Investigations by the applicant have shown that it is of great importance, especially for sensitive material webs such as magnetic tapes, to keep the filled roll stable after the separation process, since the winding train is now missing due to the separate material web.
Eine Vorrichtung der eingangs genannten gattungsmäßigen Art ist aus der GB-A 2 126 564 bekannt. Dabei liegt an der aufzuwickelnden Wickelrolle während des Wickelprozesses eine Anlagerolle an, um zwischen den Lagen Luft herauszuquetschen und seitliches Ausschießen der Bahnlagen zu verhindern. Aus der US 4 993 692 ist eine Wickelvorrichtung bekannt, bei welcher eine angetriebene Andruckrolle am Wickel anliegt, um die Masseträgheit der Wickelwalze während des Wickelvorgangs zu überwinden. Diese Andruckrolle wird, nachdem der volle Wickeldurchmesser erreicht ist, vom Wickel abgeschwenkt und an einen neu zu bewickelnden Wickelkern angeschwenkt, um dort nach Trennen der Bahn den neuen Bahnanfang auf dem Kern festzulegen.A device of the generic type mentioned at the outset is known from GB-A 2 126 564. During the winding process, there is a contact roller on the winding roll to be wound up, in order to squeeze air out between the layers and to prevent the web layers from being blown out to the side. From US 4 993 692 a winding device is known in which a driven pressure roller abuts the winding in order to overcome the inertia of the winding roller during the winding process. After the full winding diameter has been reached, this pressure roller is pivoted away from the winding and swiveled onto a winding core to be rewound in order to fix the new start of the web on the core there after the web has been separated.
Der Erfindung lag die Aufgabe zugrunde, eine Stabilisierung des Wickelbildes beim Abbremsen der vollen Wickelrolle bis zum Stillstand zu erreichen, wobei zusätzlich die Auslaufzeit des Wickels herabgesetzt werden soll, um einen schnellen Rollenwechsel bei einer Wendewicklervorrichtung zu erreichen.The invention had for its object to achieve a stabilization of the winding pattern when braking the full winding reel to a standstill, the run-out time of the reel should also be reduced in order to achieve a quick reel change in a turret winder.
Erfindungsgemäß wurde die Aufgabe gelöst mit einer Vorrichtung sowie mit einem Verfahren gemäß dem kennzeichnenden Teil der Ansprüche. Die Erfindung wird nun im Folgenden näher erläutert, wobei auf die Zeichnung Bezug genommen wird. Selbstverständlich ist der Erfindungsgedanke nicht auf den im folgenden konkret beschriebenen Wendewickler und das beschriebene Wickelgut beschränkt, sondern ist auch bei anderen Wickelvorrichtungen und Materialbahnen im gleichen Umfang anwendbar.According to the invention the object was achieved with a device and with a method according to the characterizing part of the claims. The invention will now be explained in more detail below, reference being made to the drawing. Of course, the concept of the invention is not limited to the turning winder and the winding material described specifically below, but can also be used to the same extent in other winding devices and material webs.
Eine von einer (nicht gezeichneten) Beschichtungsvorrichtung kommende Materialbahn (2) läuft über Umlenkwalzen (1, 3, 4) an die Aufwickel- und Querschneidevorrichtung ein. Eine Kontaktwalze (5) legt die Materialbahn (2) an den Wickel (6) an. Eine zweite Kontaktwalze (7), die an einem Arm (17) drehbar gelagert ist, stabilisiert den Wickel. Eine baugleiche Vorrichtung, nämlich Kontaktwalze (12) und Arm (16) ist in analoger Weise für den voll bewickelten Wickelkern (11) vorhanden.A material web (2) coming from a coating device (not shown) runs over deflection rollers (1, 3, 4) to the winding and cross-cutting device. A contact roller (5) places the material web (2) on the winding (6). A second contact roller (7), which is rotatably mounted on an arm (17), stabilizes the winding. An identical one Device, namely contact roller (12) and arm (16) is provided in an analogous manner for the fully wound winding core (11).
Ist nun der annähernd volle Wickeldurchmesser erreicht, wird die Gesamtvorrichtung (18) gewendet, so daß der skizzierte Zustand erreicht wird. Dann wird durch eine nicht näher bezeichnete Querschneideeinrichtung (15) die Materialbahn zwischen der leeren Wickelhülse (6) und der Umlenkrolle (8) getrennt und gleichzeitig der neu entstandene Bahnanfang an die Wickelhülse (6) angelegt. Daraufhin wird der auf der Wickelhülse (11) aufgewickelte volle Wickel am Außendurchmesser durch die gebremste Kontaktwalze (12) bis zum Stillstand abgebremst. Die Kontaktwalze bleibt eine zu wählende Zeit am Wickel angepreßt, bis sie zum Wechsel des gefüllten Wickels gegen eine leere Wickelhülse abgeschwenkt wird. Der Wickler verbleibt in dieser Position bis der Wickelkern (6) annähernd gefüllt ist und der beschriebene Wendevorgang von neuem beginnt.If the approximately full winding diameter has now been reached, the entire device (18) is turned so that the sketched state is reached. Then the material web between the empty winding tube (6) and the deflecting roller (8) is separated by a cross cutting device (15), and the newly created web start is simultaneously applied to the winding tube (6). Then the full roll wound on the winding tube (11) is braked on the outside diameter by the braked contact roller (12) to a standstill. The contact roller remains pressed against the reel for a selected period of time until it is pivoted against an empty winding tube in order to change the filled reel. The winder remains in this position until the winding core (6) is almost filled and the turning process described begins again.
Das Wesen der Erfindung besteht nun darin, daß jede der Wickelhülsen antreibbar und bremsbar gestaltet ist und daß die zusätzlich zu der üblichen Kontaktwalze wie in der bereits erwähnten EP-A-0 503 363 vorhandenen Kontaktwalzen (7, 12) bremsbar sind. Bei Durchführung des beschriebenen Trennvorganges wird die am vollen Wickel wirkende Kontaktwalze (12) mit einem Bremsmoment gebremst, welches geeignet ist, das Teleskopieren des Wickels zu verhindern. Die Größe des zu wählenden Bremsmoments hängt ab vom Trägheitsmoment des Wickels und des immer an der Wickelhülse wirkenden Moments, das sich ergibt aus der Lagerreibung der Hülsenlagerung, die Reibung im Antriebsmotor und des Übertragungsgetriebes.The essence of the invention is that each of the winding tubes is designed to be drivable and brakable and that the contact rollers (7, 12) which are present in addition to the usual contact roller, as in the already mentioned EP-A-0 503 363, can be braked. When the separation process described is carried out, the contact roller (12) acting on the full winding is braked with a braking torque which is suitable for preventing the winding from telescoping. The size of the braking torque to be selected depends on the moment of inertia of the winding and the torque always acting on the winding tube, which results from the bearing friction of the tube bearing, the friction in the drive motor and the transmission gear.
Bei hohem inneren Reibmoment und Wickeln sehr glatter Bahnen, ist es notwendig, das innere Moment dadurch zu verringern, daß die Wickelhülse durch eine Kupplung von ihrem Antrieb nach dem Kappen der Bahn getrennt wird. Dabei ist es zweckmäßig, unmittelbar vor dem Trennvorgang oder spätestens gleichzeitig mit dem Trennvorgang das Bremsmoment über die Kontaktwalze (12) einzuleiten, weil der vorher auf dem Wickel lastende Bandzug durch den Trennvorgang beendet worden ist. Eine Erhöhung des Andrucks der Kontaktwalze macht diesen Vorgang effektiver. Außerdem ist es zweckmäßig, nach dem Stillstand des Wickels die Kontaktwalze noch eine gewisse Zeit am Bahnwickel andrücken zu lassen, damit die eingeschlossene Luft entweichen kann.With high internal frictional torque and winding of very smooth webs, it is necessary to reduce the internal torque by that the winding tube is separated from its drive by a coupling after cutting the web. It is expedient to introduce the braking torque via the contact roller (12) immediately before the cutting process or at the same time as the cutting process, because the strip tension previously on the reel has been ended by the cutting process. Increasing the pressure of the contact roller makes this process more effective. It is also expedient to let the contact roller press on the web winding for a certain time after the winding has stopped, so that the trapped air can escape.
In einem Beispiel wurde eine cirka 70 cm breite Kunststoffbahn bestehend aus 15 µm dickem Polyethylenterephthalat, welche mit einer 3 µm dicken magnetischen Beschichtung versehen war, mit einer Geschwindigkeit von 500 m/min. aufgewickelt. Mittels der vorstehend beschriebenen Vorrichtung konnte die genannte Bahn, die eine Länge von 10 000 m hatte, innerhalb von 5 Sekunden zum Stillstand gebracht werden, ohne daß ein Verschwimmen der äußersten Wickellagen festzustellen war. Das Wickelverhalten war ausgezeichnet, die Bahn wies auch an den äußeren Lagen nach dem Abzug der. Klebestelle beziehungsweise Bahnende und -anfang keinerlei Verkratzungen oder Beschädigungen auf.In one example, an approximately 70 cm wide plastic web consisting of 15 μm thick polyethylene terephthalate, which was provided with a 3 μm thick magnetic coating, was used at a speed of 500 m / min. wound up. Using the device described above, the above-mentioned web, which had a length of 10,000 m, could be brought to a standstill within 5 seconds without the outermost winding layers being blurred. The winding behavior was excellent, the web also showed on the outer layers after the deduction. There are no scratches or damage to the glue point or the end and beginning of the web.
Claims (5)
- A device for winding and crosscutting a running web of material (2), which is wound onto a drivable and brakable core (11) until a certain reel diameter is achieved, a contact roller (12) pressing the web of material against the core by means of a swivel arm (16) and, before a still unwound following core (6), wrapped around by the web of material over part of its circumference, is transferred into the winding position, a cutting element (15) severing the web of material (2) between the wound core (11) and the still unwound core (6) perpendicularly with respect to the running direction, wherein the contact roller (12) bearing against the wound core (11) is brakable.
- A method for winding and crosscutting a running web of material with a device as claimed in claim 1, wherein, shortly before initiating and during the severing operation, the contact roller (12) which acts on the filled reel is braked with a braking moment which is equal to or greater than the moment resulting from the moment of inertia of the reel and the moment from frictional forces of the winding drive.
- A method as claimed in claim 2, wherein, at the latest at the instant of the severing operation, the bearing pressure of the contact roller (12) against the web of material (2) wound on the core (11) is increased.
- A method as claimed in claim 2 or 3, wherein the bearing pressure of the contact roller (12) is maintained for a certain time after the reel (11) has come to a standstill.
- A method as claimed in any of claims 2 to 4, wherein the core (6, 11) is separated from its drive by a clutch after the severing operation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4121944A DE4121944A1 (en) | 1991-07-03 | 1991-07-03 | DEVICE AND METHOD FOR WINDING AND CROSS-CUTING A RUNNING MATERIAL |
| DE4121944 | 1991-07-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0521396A1 EP0521396A1 (en) | 1993-01-07 |
| EP0521396B1 true EP0521396B1 (en) | 1995-09-13 |
Family
ID=6435296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92110751A Expired - Lifetime EP0521396B1 (en) | 1991-07-03 | 1992-06-25 | Method and device for winding and crosscutting a web |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0521396B1 (en) |
| DE (2) | DE4121944A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8459586B2 (en) | 2006-03-17 | 2013-06-11 | The Procter & Gamble Company | Process for rewinding a web material |
| US7559503B2 (en) | 2006-03-17 | 2009-07-14 | The Procter & Gamble Company | Apparatus for rewinding web materials |
| WO2008043748A1 (en) * | 2006-10-09 | 2008-04-17 | Windmöller & Hölscher Kg | Pivotable positioning roller in the reversing winder |
| ITMI20072018A1 (en) * | 2007-10-18 | 2009-04-19 | Colines Spa | WRAPPING PLANT FOR USE IN PRODUCTION LINES OF PLASTIC FILMS, IN PARTICULAR EXTENSIBLE PLASTIC FILMS, AND METHOD OF WRAPPING OF PLASTIC FILM COILS. |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4431140A (en) * | 1981-11-27 | 1984-02-14 | The Black Clawson Company | Continuous pressure roll winder |
| GB2126564B (en) * | 1982-09-13 | 1986-01-22 | Worldwide Converting Mach | Turret winder |
| DE3425490A1 (en) * | 1984-07-11 | 1986-01-23 | Lenze GmbH & Co KG Aerzen, 3258 Aerzen | REEL CHANGE DEVICE FOR SLEEVES WITH DIFFERENT DIAMETERS |
| CH678419A5 (en) * | 1989-04-21 | 1991-09-13 | Gottlieb Looser | |
| US4993652A (en) * | 1989-11-06 | 1991-02-19 | The Black Clawson Company | Continuous winder for web materials |
-
1991
- 1991-07-03 DE DE4121944A patent/DE4121944A1/en not_active Withdrawn
-
1992
- 1992-06-25 EP EP92110751A patent/EP0521396B1/en not_active Expired - Lifetime
- 1992-06-25 DE DE59203646T patent/DE59203646D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE4121944A1 (en) | 1993-01-07 |
| DE59203646D1 (en) | 1995-10-19 |
| EP0521396A1 (en) | 1993-01-07 |
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