EP0665178A2 - Winding machine for winding a running paper web - Google Patents
Winding machine for winding a running paper web Download PDFInfo
- Publication number
- EP0665178A2 EP0665178A2 EP94119936A EP94119936A EP0665178A2 EP 0665178 A2 EP0665178 A2 EP 0665178A2 EP 94119936 A EP94119936 A EP 94119936A EP 94119936 A EP94119936 A EP 94119936A EP 0665178 A2 EP0665178 A2 EP 0665178A2
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- EP
- European Patent Office
- Prior art keywords
- winding
- support roller
- roller
- support
- winding machine
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/08—Web-winding mechanisms
- B65H18/26—Mechanisms for controlling contact pressure on winding-web package, e.g. for regulating the quantity of air between web layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/08—Web-winding mechanisms
- B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
- B65H18/20—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web the web roll being supported on two parallel rollers at least one of which is driven
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2401/00—Materials used for the handling apparatus or parts thereof; Properties thereof
- B65H2401/10—Materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/40—Shafts, cylinders, drums, spindles
- B65H2404/42—Arrangement of pairs of drums
- B65H2404/421—Bed arrangement, i.e. involving parallel and spaced drums, e.g. arranged horizontally for supporting a roll to be wound or unwound
- B65H2404/4214—Bed arrangement, i.e. involving parallel and spaced drums, e.g. arranged horizontally for supporting a roll to be wound or unwound the drums having different deformability
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/40—Shafts, cylinders, drums, spindles
- B65H2404/43—Rider roll construction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/10—Means using fluid made only for exhausting gaseous medium
- B65H2406/13—Means using fluid made only for exhausting gaseous medium pressure arrangement for compensating weight of handled material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/10—Means using fluid made only for exhausting gaseous medium
- B65H2406/13—Means using fluid made only for exhausting gaseous medium pressure arrangement for compensating weight of handled material
- B65H2406/131—Means using fluid made only for exhausting gaseous medium pressure arrangement for compensating weight of handled material in combination with rollers or drums
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- 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
- B65H2408/232—Winding beds consisting of two rollers
- B65H2408/2321—Winding beds consisting of two rollers with winding bed supplied with vacuum or compressed air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S242/00—Winding, tensioning, or guiding
- Y10S242/908—Fluid treatment or handling
Definitions
- the invention relates to a winding machine for winding a running paper web. Reference is made to the preamble of claim 1.
- the winding hardness plays a role for the subsequent processing.
- the winding hardness should drop from a certain initial value to an end value.
- the waste should be as even as possible from the first to the last layer. It should have a certain gradient, i.e. not too strong and not too weak.
- the course of the winding hardness should under no circumstances have jump points, e.g. a sudden drop.
- Air volume or air pressure can be controlled according to the growing weight of the reel. It is also possible to extend the chamber along its length - i.e. across the web width - to be sectioned into individual chambers and each of these individual chambers to be provided with a pressure connection. In this way, the deflection of the winding can also be compensated for.
- rider rolls are used, which are arranged parallel to the supporting rolls. With these rider rolls are exerted on the roll by a contact pressure. The contact pressure is controlled, becoming large at the beginning and decreasing with increasing roll weight.
- the rider roller thus allows the line pressure and thus also the winding hardness to be influenced and controlled in the desired sense.
- the line pressure in the final phase of the winding is also very large.
- the winding tension increases, so that the web can tear or crepe folds.
- DE-DM 7 310 606 is a winding machine become known, which has two equally large support rollers. One of these carrier rollers can be lowered during the winding process from an upper position above the horizontal plane of the axis of the other carrier roller at the beginning of the winding process. This lowering is intended to maintain a core that is firmly wound from the start.
- US-PS 2 461 387 describes a winding machine which has two driven carrier rollers of different diameters; the carrier roller with the smaller diameter is provided with a coating with a higher coefficient of friction and driven at a higher speed than the other carrier roller. As a result, tensile stress is exerted on the outer layer of the web.
- DE-OS 27 57 247 relates to a winding machine with support rollers of the same diameter.
- the winding hardness is controlled by changing the distance between the carrier rollers.
- DE-PS 678 585 describes a winding machine with two support rollers, the first of which has a hard jacket and the second has a soft jacket.
- the axes of the two rollers are in the same horizontal plane.
- DE 38 39 244 describes a winding machine with three support rollers.
- the first support roller is stationary, while the two subsequent support rollers are movable and are wrapped in a support belt.
- the winding hardness should be controlled over the roll diameter by means of the support belt and by changing the positions of the second and third carrier rolls.
- the support band should cause the largest possible support surface in order to lower the surface load.
- This winding machine is extremely complex. It also has a particularly serious disadvantage: as soon as the paper roll has grown so that it is mainly carried by the support band, the support band can swing violently, so that the paper roll starts to "dance" and can be catapulted out of bed .
- EP 0 157 062 B1 describes a winding machine with two support rollers and a rider roller.
- the outer surfaces of all these rollers are made from a variety of individual fluid chambers are formed, which are arranged axially next to each other, and which form the entire lateral surface of the roll in question with the formation of a joint with their individual lateral surfaces.
- the support behavior of such a roller is naturally non-uniform due to the large number of impacts across the web width.
- the invention is based on DE 31 21 039 C3, in which two carrier rollers are provided, the two carrier rollers being arranged in such a way that - at least during a certain operating phase - the center axis of one carrier roller lies below the center axis of the other carrier roller.
- This prior publication leaves open which of the two support rollers, i.e. the one wrapped by the paper web or the one not wrapped around is the one below.
- EP 0 562 266 A1 discloses a winding machine in which the upper vertex of the "harder” support roller lies above the vertex of the "softer” support roller.
- the paper web is led up from below between the two support rollers to the winding bed and wraps around it, which is very important according to that application, the "harder” support roller.
- the inventor has deliberately assumed a winding machine with the features according to the preamble of claim 1, since this type has the best possible variations, in particular the possibility of variable pressure relief over the length of the winding, i.e. in the direction of the web width.
- the invention is therefore based on the object to design a winding machine according to the preamble of claim 1 such that a controlled over the winding diameter winding hardness can be achieved that the diameter of the individual winding can be dimensioned even larger than since then without it dreaded bursting of the outer winding layers, and that especially air pockets between the winding layers are avoided.
- the inventor then further ensured by the web guide according to the characterizing part of claim 1 that the soft jacket of the wrapped "soft" support roller also serves as a shut-off or sealing element for the compressed air. This solution is referred to below as the "first variant". This is because the soft sheath can be applied elastically and uniformly on all sides at the pressure point against the resulting winding, so that the penetration of compressed air between two adjacent winding layers is largely avoided. In particular, it is avoided that air bubbles form.
- the solution according to claim 2 goes one step further.
- the web guide is designed such that the web brought up to the winding machine is not introduced from below between the two support rollers, but through one of the two press nips between one of the support rollers and the paper roll.
- the press nip between the soft support roller and the paper roll is referred to below as the "second variant".
- the second variant has the advantage over the first variant that no air at all can penetrate into the space between the paper web brought in and the previous paper layer.
- the first variant is suitable for winding relatively porous types of paper, e.g. Newsprint.
- This variant has an advantage in that it allows the use of a cutting knife.
- the second variant is ideal for processing relatively dense types of paper, e.g. coated papers, where the air could not escape if they were trapped between two adjacent layers of paper.
- the first variant is to be described first, see FIGS. 1 and 2.
- the winding machine shown in Fig. 1 has two support rollers 1 and 2, which together form a winding bed for receiving a paper roll 3.
- the paper roll 3 is created by winding up a paper web 4.
- the web 4 is brought in from the bottom left and first wraps around the support roller 2.
- the paper roll 3 is loaded in a controllable manner by a loading or rider roller 5, in order to also reduce the print run to influence.
- the support roller 1 is at a higher level above the floor 6 than the support roller 2.
- the axis 7 of the support roller 1 and the axis 8 of the support roller 2 lie in a plane which forms an angle ⁇ with the horizontal .
- this angle ⁇ is an acute angle. In the present case it is of the order of 5 °. In practice, much higher values can also be provided, for example 30 °.
- the preferred range is 0.5 to 20 °.
- the support roller 2 has a jacket that is much more deformable than the jacket of the support roller 1.
- the material of the support roller 1 is steel, while the jacket 2.2 of the support roller 1 is made of rubber-elastic material.
- the weight G of the paper roll 3 is distributed in different ways between the two support rollers 1 and 2.
- the component G2 of the paper roll weight is obviously larger than the component G1.
- the contact area A2 on the support roller 2 is also larger than the contact area A1 on the support roller 1.
- the pressure chamber 20 can be divided into a plurality of individual chambers by a plurality of walls, also not shown, which lie in planes perpendicular to the roller axes; In this case, each individual chamber has its own pressure connection. A different relief in the longitudinal axis direction of the winding 3 can thus be achieved.
- Figure 2 again shows a side view of the essential elements of a winding machine, namely the two carrying drums 1, 2, which together form a winding bed, with a winding 3 located in the winding bed.
- a device for relieving pressure by means of compressed air is in turn assigned to the two support rollers 1, 2 in order to at least partially cancel out the weight of the roll 3.
- the device comprises an air box 10 which has side walls 10.1, 10.2, a seal 10.3 against the carrying drum 1 and a seal 10.4 against the carrying drum 2.
- a knife 11 is articulated at the upper end of the side wall 10.4. This extends across the width of the machine, i.e. over the length of the roll 3. A partial extension is also possible.
- the knife When driving, the knife has the position 11 '- broken line.
- Knife 11 now assumes the position shown in solid lines, the paper web coming into contact with the cutting edge of knife 11 when the roll is pivoted in the direction of the arrow and is thereby severed.
- FIG. 3 This figure in turn shows a side view of the essential elements of a winding machine, namely the two Carrier rollers 1, 2, which together form a winding bed, with a paper roll 3 located in the winding bed.
- the two support rollers 1, 2 are in turn assigned a device for relief by means of compressed air from below in order to at least partially lift the weight of the paper roll 3.
- the device comprises an air box 20 which has side walls 10.1, 10.2, a seal 10.3 against the support roller 1 and a seal 10.4 against the support roller 2.
- the paper web 4 is here through the press nip introduced between the support roller 2 and the paper roll 3 to the winding machine. From the very beginning, it lies on the adjacent - already wound - paper layer.
- the compressed air contained in pressure chamber 20 thus has no chance of penetrating between adjacent layers of paper.
- the paper web 4 could also be inserted into the nip which is formed from the support roller 1 and paper roll 3.
Landscapes
- Replacement Of Web Rolls (AREA)
- Winding Of Webs (AREA)
- Moulding By Coating Moulds (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Advancing Webs (AREA)
Abstract
Description
Die Erfindung betrifft eine Wickelmaschine zum Aufwickeln einer laufenden Papierbahn. Auf den Oberbegriff von Anspruch 1 wird verwiesen.The invention relates to a winding machine for winding a running paper web. Reference is made to the preamble of
Beim Wickeln von Bahnen spielt die Wickelhärte eine Rolle für die anschließende Weiterverarbeitung. Besonders bei Papierbahnen ist es ganz entscheidend, daß die Wickelhärte über den gesamten Rollendurchmesser einen bestimmten Verlauf hat. Im allgemeinen soll die Wickelhärte von einem gewissen Anfangswert auf einen Endwert abfallen. Der Abfall soll von der ersten bis zur letzten Lage möglichst gleichmäßig sein. Er soll einen bestimmten Gradienten aufweisen, d.h., nicht zu stark und nicht zu schwach sein. Der Verlauf der Wickelhärte soll auf gar keinen Fall Sprungstellen aufweisen, z.B. einen plötzlichen Abfall.When winding webs, the winding hardness plays a role for the subsequent processing. With paper webs in particular, it is very important that the winding hardness has a certain course over the entire roll diameter. In general, the winding hardness should drop from a certain initial value to an end value. The waste should be as even as possible from the first to the last layer. It should have a certain gradient, i.e. not too strong and not too weak. The course of the winding hardness should under no circumstances have jump points, e.g. a sudden drop.
Man erreicht dies nur, wenn man bestimmte Maßnahmen ergreift. Unternimmt man nichts, so wird mit zunehmendem Rollendurchmesser der Liniendruck zwischen der Rolle und der Tragwalze bzw. den Tragwalzen immer größer, und damit auch die Wickelhärte.This can only be achieved by taking certain measures. If you do nothing, the line pressure between the roller and the support roller or the support rollers increases with increasing roller diameter, and with it the winding hardness.
Um dies zu vermeiden, wendet bei Maschinen gemäß dem Oberbegriff von Anspruch 1 Druckluft an, die durch den Druckluftanschluß in die druckdichte Kammer unter dem Papierwickel eintritt. Dabei können Luftmenge oder Luftdruck entsprechend dem wachsenden Gewicht des Wickels gesteuert werden. Auch ist es möglich, die Kammer über ihre Länge hinweg - d.h. über die Bahnbreite - in Einzelkammern zu sektionieren, und diese Einzelkammern jeweils mit einem Druckanschluß zu versehen. Auf diese Weise läßt sich auch die Durchbiegung des Wickels ausgleichen.To avoid this, apply to compressed air in machines according to the preamble of
Weiterhin wendet man sogenannte Reiterwalzen an, die parallelachsig zu den Tragwalzen angeordnet sind. Mit diesen Reiterwalzen übt man auf die Rolle einen Anpreßdruck aus. Der Anpreßdruck ist gesteuert, wobei er am Anfang groß und mit zunehmendem Rollengewicht geringer wird.Furthermore, so-called rider rolls are used, which are arranged parallel to the supporting rolls. With these rider rolls are exerted on the roll by a contact pressure. The contact pressure is controlled, becoming large at the beginning and decreasing with increasing roll weight.
Die Reiterwalze erlaubt somit, den Liniendruck und damit auch die Wickelhärte zu beeinflussen und im gewünschten Sinne zu steuern. Wünscht man jedoch, eine Rolle sehr großen Durchmessers zu erzeugen, so ist auch der Liniendruck in der Endphase des Aufwickelns sehr groß. Desgleichen steigt die Wickelspannung an, so daß es zum Reißen der Bahn oder zu Kreppfalten kommen kann.The rider roller thus allows the line pressure and thus also the winding hardness to be influenced and controlled in the desired sense. However, if one wishes to produce a roll of very large diameter, the line pressure in the final phase of the winding is also very large. Likewise, the winding tension increases, so that the web can tear or crepe folds.
Andere Maßnahmen zum Beeinflussen der Wickelhärte bestehen darin, die Last der Rolle auf die einzelnen Tragwalzen zu verteilen. Zu diesem Zwecke wurden schon Tragwalzen gleichen Durchmessers in unterschiedlichen Horizontalebenen angeordnet oder Tragwalzen unterschiedlichen Durchmessers verwendet. Ferner ist es bekannt, daß man beim Wickeln auf einer Tragwalze kleineren Durchmessers eine härtere Wicklung erhält als beim Wickeln auf einer Tragwalze größeren Durchmessers.Other measures for influencing the winding hardness are to distribute the load of the roll to the individual support rollers. For this purpose, support rollers of the same diameter have already been arranged in different horizontal planes or support rollers of different diameters have been used. Furthermore, it is known that when winding on a support roller of smaller diameter, a harder winding is obtained than when winding on a support roller of larger diameter.
Aus DE-DM 7 310 606 ist eine Wickelmaschine
bekanntgeworden, die zwei gleich große Tragwalzen aufweist. Die eine dieser Tragwalzen kann während des Wickelvorganges aus einer oberen Position oberhalb der Horizontalebene der Achse der anderen Tragwalze zu Beginn des Wickelvorganges abgesenkt werden. Durch dieses Absenken soll ein von Anfang an fest gewickelter Kern erhalten werden.
become known, which has two equally large support rollers. One of these carrier rollers can be lowered during the winding process from an upper position above the horizontal plane of the axis of the other carrier roller at the beginning of the winding process. This lowering is intended to maintain a core that is firmly wound from the start.
US-PS 2 461 387 beschreibt eine Wickelmaschine, die zwei angetriebene Tragwalzen unterschiedlichen Durchmessers hat; die Tragwalze mit dem kleineren Durchmesser ist mit einem Belag mit größerem Reibwert versehen und mit höherer Geschwindigkeit angetrieben als die andere Tragwalze. Hierdurch wird eine Zugspannung auf die äußere Lage der Bahn ausgeübt.US-
DE-OS 27 57 247 betrifft eine Wickelmaschine mit Tragwalzen gleich großen Durchmessers. Die Steuerung der Wickelhärte erfolgt durch Verändern des gegenseitigen Abstandes der Tragwalzen.DE-OS 27 57 247 relates to a winding machine with support rollers of the same diameter. The winding hardness is controlled by changing the distance between the carrier rollers.
DE-PS 678 585 beschreibt eine Wickelmaschine mit zwei Tragwalzen, von denen die erste einen harten Mantel und die zweite einen weichen Mantel hat. Die Achsen der beiden Walzen befinden sich in ein und derselben Horizontalebene.DE-PS 678 585 describes a winding machine with two support rollers, the first of which has a hard jacket and the second has a soft jacket. The axes of the two rollers are in the same horizontal plane.
DE 38 39 244 beschreibt eine Wickelmaschine mit drei Tragwalzen. Dabei ist die erste Tragwalze ortsfest, während die beiden nachfolgenden Tragwalzen ortsveränderlich und von einem Stützband umschlungen sind. Durch das stützband sowie durch die Veränderung der Positionen der zweiten und der dritten Tragwalze soll die Wickelhärte über dem Rollendurchmesser gesteuert werden. Dabei soll das Stützband eine möglichst große Stützfläche zwecks Senkens der Flächenlast bewirken. Diese Wickelmaschine ist außerordentlich aufwendig. Sie hat außerdem einen besonders gravierenden Nachteil: Sobald die Papierrolle derart angewachsen ist, daß sie hauptsächlich vom stützband getragen wird, kann es zu einem heftigen Schwingen des Stützbandes kommen, so daß die Papierrolle zu "tanzen" anfängt und hierbei aus dem Bett herauskatapultiert werden kann.DE 38 39 244 describes a winding machine with three support rollers. The first support roller is stationary, while the two subsequent support rollers are movable and are wrapped in a support belt. The winding hardness should be controlled over the roll diameter by means of the support belt and by changing the positions of the second and third carrier rolls. The support band should cause the largest possible support surface in order to lower the surface load. This winding machine is extremely complex. It also has a particularly serious disadvantage: as soon as the paper roll has grown so that it is mainly carried by the support band, the support band can swing violently, so that the paper roll starts to "dance" and can be catapulted out of bed .
Es wurde auch schon vorgeschlagen, bei einer Wickelmaschine mit zwei Tragwalzen die Mäntel dieser beiden Walzen aus Gummi herzustellen. Dabei hatten die Tragwalzen gleichen Durchmesser und die Mäntel gleiche Gummihärten. Dies führt jedoch ebenfalls zu einem Schwingen und Schwimmen der Papierrolle.It has also been proposed to produce the shells of these two rollers from rubber in a winding machine with two support rollers. The carrier rollers had the same diameter and the jackets had the same rubber hardness. However, this also causes the paper roll to swing and float.
EP 0 157 062 B1 beschreibt eine Wickelmaschine mit zwei Tragwalzen und einer Reiterwalze. Dabei sind die Mantelflächen aller dieser Walzen aus einer Vielzahl von einzelnen Fluidkammern gebildet, die axial nebeneinander angeordnet sind, und die unter Bildung eines Stoßes mit ihren einzelnen Mantelflächen die gesamte Mantelfläche der betreffenden Walze bilden. Das Stützverhalten einer solchen Walze ist naturgemäß aufgrund der vielzahl von Stößen über die Bahnbreite hinweg gesehen ungleichförmig.EP 0 157 062 B1 describes a winding machine with two support rollers and a rider roller. The outer surfaces of all these rollers are made from a variety of individual fluid chambers are formed, which are arranged axially next to each other, and which form the entire lateral surface of the roll in question with the formation of a joint with their individual lateral surfaces. The support behavior of such a roller is naturally non-uniform due to the large number of impacts across the web width.
Die Erfindung geht aus von DE 31 21 039 C3, bei der zwei Tragwalzen vorgesehen sind, wobei die beiden Tragwalzen derart angeordnet sind, daß - wenigstens während einer gewissen Betriebsphase - die Mittelachse der einen Tragwalze unterhalb der Mittelachse der anderen Tragwalze liegt. Bei dieser Vorveröffentlichung bleibt offen, welche der beiden Tragwalzen, d.h. die von der Papierbahn umschlungene oder die nicht umschlungene, die unten liegende ist.The invention is based on DE 31 21 039 C3, in which two carrier rollers are provided, the two carrier rollers being arranged in such a way that - at least during a certain operating phase - the center axis of one carrier roller lies below the center axis of the other carrier roller. This prior publication leaves open which of the two support rollers, i.e. the one wrapped by the paper web or the one not wrapped around is the one below.
Schließlich ist aus EP 0 562 266 A1 eine Wickelmaschine bekannt, bei welcher der obere Scheitelpunkt der "härteren" Tragwalze oberhalb des Scheitelpunktes der "weicheren" Tragwalze liegt. Dabei wird die Papierbahn von unten her zwischen den beiden Tragwalzen hindurch zum Wickelbett hochgeführt und umschlingt hierbei, was gemäß jener Anmeldung sehr wichtig ist, die "härtere" Tragwalze.Finally, EP 0 562 266 A1 discloses a winding machine in which the upper vertex of the "harder" support roller lies above the vertex of the "softer" support roller. The paper web is led up from below between the two support rollers to the winding bed and wraps around it, which is very important according to that application, the "harder" support roller.
Mit allen diesen bekannten Wickelmaschinen wurden zwar Teilprobleme des Wickelprozesses gelöst. Jedoch hat keine dieser Maschinen voll befriedigt bezüglich der einwandfrei steuerbaren Wickelhärte und bezüglich des maximal erreichbaren Wickeldurchmessers. Insbesondere ist es wünschenswert, die erreichbaren Wickeldurchmesser noch mehr als bisher zu steigern, ohne daß es zu einem Platzen der äußeren Wickellagen kommt. Ein besonders unangenehmes Problem, das ebenfalls bisher nicht gelöst wurde, ist das Einziehen von Luft zwischen den einzelnen Lagen des Wickels. Gerade dieses Problem wurde bisher nicht in befriedigender Weise gelöst. Bei Wickelmaschinen gemäß dem Oberbegriff von Anspruch 1 ist dieses Problem besonders unangenehm in Erscheinung getreten.With all of these known winding machines, partial problems of the winding process have been solved. However, none of these machines has been fully satisfied with the perfectly controllable winding hardness and with the maximum achievable winding diameter. In particular, it is desirable to increase the achievable winding diameter even more than before without the outer winding layers bursting. A particularly unpleasant problem, which has also not yet been solved, is the drawing in of air between the individual layers of the roll. This problem has not yet been satisfactorily solved. For winding machines according to the The preamble of
Der Erfinder ist bewußt von einer Wickelmaschine mit den Merkmalen gemäß dem Oberbegriff von Anspruch 1 ausgegangen, da diese Gattung die besten Variationsmöglichkeiten aufweist, besonders die Möglichkeit einer variablen Druckentlastung über die Länge des Wickels hinweg, d.h. in Richtung der Bahnbreite.The inventor has deliberately assumed a winding machine with the features according to the preamble of
Der Erfindung liegt somit die Aufgabe zugrunde, eine Wickelmaschine gemäß dem Oberbegriff von Anspruch 1 derart zu gestalten, daß eine über den Wickeldurchmesser hinweg kontrollierte Wickelhärte erzielbar ist, daß der Durchmesser des einzelnen Wickels noch größer bemessen werden kann als seither, ohne daß es zu dem gefürchteten Aufplatzen der äußeren Wickellagen kommt, und daß vor allem Lufteinschlüsse zwischen den Wickellagen vermieden werden.The invention is therefore based on the object to design a winding machine according to the preamble of
Diese Aufgabe wird durch die kennzeichnenden Merkmale von Anspruch 1 bzw. von Anspruch 2 gelöst.This object is achieved by the characterizing features of
Aus der großen Vielzahl von Wickelmaschinen mit einer unübersehbaren Vielzahl von Einzelmerkmalen hat der Erfinder gerade diese Merkmalskombination ausgewählt. Er hat hierbei folgendes erkannt:
Gerade bei diesen Maschinen besteht in besonderem Maße die Gefahr von Lufteinschlüssen zwischen zwei einander benachbarten Wickellagen. Dies erklärt sich daraus, daß die Druckluft in der Druckkammer nicht nur den entstehenden Wickel anzuheben versucht, um dessen Eigengewicht in einem gewissen Maße aufzuheben und damit den Liniendruck an den Auflagestellen der Tragwalzen zu verringern, sondern daß die Druckluft - trotz des Auflagedruckes des Wickels - zwischen einander benachbarte Wickellagen gelangt. Der Erfinder hat sodann weiterhin durch die Bahnführung gemäß dem kennzeichnenden Teil von Anspruch 1 dafür gesorgt, daß der weiche Mantel der umschlungenen "weichen" Tragwalze gleichzeitig als Absperrelement oder Abdichtelement für die Druckluft dient. Diese Lösung wird im folgenden als "Erste Variante" bezeichnet. Der weiche Mantel vermag sich nämlich elastisch und allseitig gleichmäßig an der Anpreßstelle gegen den entstehenden Wickel anzulegen, so daß das Eindringen von Druckluft zwischen zwei einander benachbarte Wickellagen weitgehend vermieden wird. Insbesondere wird vermieden, daß sich Luftblasen bilden.The inventor selected this combination of features from the large number of winding machines with an unmistakable number of individual features. He recognized the following:
Especially with these machines, there is a particular risk of air pockets between two adjacent winding layers. This can be explained by the fact that the compressed air in the pressure chamber not only tries to lift the resulting roll in order to lift its own weight to a certain extent and thus reduce the line pressure at the support points of the support rollers, but that the compressed air - despite the contact pressure of the roll - between adjacent winding layers. The inventor then further ensured by the web guide according to the characterizing part of
Die Lösung gemäß Anspruch 2 geht einen Schritt weiter. Dort ist nämlich die Bahnführung derart gestaltet, daß die an die Wickelmaschine herangeführte Bahn nicht von unten her zwischen den beiden Tragwalzen eingeführt wird, sondern durch einen der beiden Preßspalte zwischen einer der Tragwalzen und dem Papierwickel. Vorzugsweise wählt man hierbei den Preßspalt zwischen der weichen Tragwalze und dem Papierwickel. Diese Lösung wird im folgenden als "Zweite Variante" bezeichnet. Die Zweite Variante hat gegenüber der Ersten Variante den Vorteil, daß überhaupt keine Luft in den Zwischenraum zwischen der herangeführten Papierbahn und der vorausgegangenen Papierlage eindringen kann.The solution according to
Die Erste Variante ist geeignet beim Aufwickeln von relativ porösen Papiersorten, z.B. Zeitungspapier. Diese Variante hat insofern einen Vorteil, indem sie die Anwendung eines Trennmessers erlaubt.The first variant is suitable for winding relatively porous types of paper, e.g. Newsprint. This variant has an advantage in that it allows the use of a cutting knife.
Die Zweite Variante hingegen ist ideal zur Verarbeitung von relativ dichten Papiersorten, z.B. gestrichenen Papieren, bei denen die Luft somit nicht entweichen könnte, wenn sie erst einmal zwischen zwei einander benachbarten Papierlagen eingeschlossen wäre.The second variant, on the other hand, is ideal for processing relatively dense types of paper, e.g. coated papers, where the air could not escape if they were trapped between two adjacent layers of paper.
Zunächst soll die erste Variante beschrieben werden, siehe die Figuren 1 und 2.The first variant is to be described first, see FIGS. 1 and 2.
Die in Fig. 1 dargestellte Wickelmaschine weist zwei Tragwalzen 1 und 2 auf, die miteinander ein Wickelbett zur Aufnahme einer Papierrolle 3 bilden. Die Papierrolle 3 entsteht durch Aufwickeln einer Papierbahn 4. Wie man sieht, wird die Bahn 4 von links unten herangeführt und umschlingt zunächst die Tragwalze 2. Die Papierrolle 3 ist von einer Belastungs- oder Reiterwalze 5 in steuerbarer Weise belastet, um damit auch den Auflagendruck zu beeinflussen.The winding machine shown in Fig. 1 has two
Wie man ferner sieht, befindet sich die Tragwalze 1 auf einem höheren Niveau oberhalb des Fußbodens 6, als die Tragwalze 2. Die Achse 7 von Tragwalze 1 und die Achse 8 von Tragwalze 2 liegen in einer Ebene, die mit der Horizontalen einen Winkel α bildet. Dieser Winkel α ist in jedem Falle ein spitzer Winkel. Er liegt im vorliegenden Falle in der Größenordnung von 5°. In der Praxis können auch weitaus höhere Werte vorgesehen werden, beispielsweise 30°. Bevorzugter Bereich ist 0,5 bis 20°.As can also be seen, the
Wichtig ist ferner, daß die Tragwalze 2 einen Mantel aufweist, der viel stärker verformbar ist als der Mantel von Tragwalze 1. Im vorliegenden Falle ist das Material der Tragwalze 1 Stahl, während der Mantel 2.2 von Tragwalze 1 aus gummielastischem Material ist.It is also important that the
Aufgrund der geneigten Anordnung verteilt sich das Gewicht G der Papierrolle 3 in unterschiedlicher Weise auf die beiden Tragwalzen 1 und 2. Die Komponente G2 des Papierrollengewichtes ist ersichtlich größer als die Komponente G1. Demgemäß ist auch die Auflagefläche A2 auf der Tragwalze 2 größer als die Auflagefläche A1 auf der Tragwalze 1. Im vorliegenden Falle könnte beispielsweise gelten:
Dabei werden die folgenden Verhältnisse angestrebt:
Hierin bedeuten im einzelnen:
- N
- = Normalkraft auf dem Mantel der Tragwalze
- F
- = Reaktionskraft auf der Papierrolle
- P1
- = Auflagedruck auf der
Tragwalze 1 - P2
- = Auflagedruck auf der
Tragwalze 2
Herein in detail mean:
- N
- = Normal force on the surface of the support roller
- F
- = Reaction force on the paper roll
- P1
- = Contact pressure on the
support roller 1 - P2
- = Contact pressure on the
support roller 2
Die Druckkammer 20 kann durch eine Mehrzahl von ebenfalls nicht gezeigten Wänden, die in zu den Walzenachsen senkrechten Ebenen liegen, in eine Vielzahl von Einzelkammern unterteilt sein; jede Einzelkammer hat in diesem Fall ihren eigenen Druckanschluß. Damit läßt sich eine unterschiedliche Entlastung in Achs-Längsrichtung des Wickels 3 erreichen.The
Es kann ferner zweckmäßig sein, den Durchmesser der "weichen" Tragwalze 2 wesentlich größer als denjenigen der "harten" Tragwalze 1 zu machen.It may also be expedient to make the diameter of the “soft”
Figur 2 zeigt wiederum in einer Seitenansicht die wesentlichen Elemente einer Wickelmaschine, nämlich die beiden Tragtrommeln 1, 2, die gemeinsam ein Wickelbett bilden, mit einem im Wickelbett befindlichen Wickel 3.Figure 2 again shows a side view of the essential elements of a winding machine, namely the two carrying
Den beiden Tragwalzen 1, 2 ist wiederum eine Einrichtung zur Entlastung mittels Druckluft von unten her zugeordnet, um das Gewicht des Wickels 3 wenigstens teilweise aufzuheben. Die Einrichtung umfaßt einen Luftkasten 10, der Seitenwände 10.1, 10.2 aufweist, ferner eine Abdichtung 10.3 gegen die Tragtrommel 1 sowie eine Abdichtung 10.4 gegen die Tragtrommel 2.A device for relieving pressure by means of compressed air is in turn assigned to the two
Am oberen Ende der Seitenwand 10.4 ist ein Messer 11 angelenkt. Dieses erstreckt sich über die Breite der Maschine, d.h. über die Länge des Wickels 3. Auch eine Teilerstreckung ist möglich.A
Bei Fahrbetrieb weist das Messer die Position 11' auf - gestrichelte Darstellung.When driving, the knife has the position 11 '- broken line.
Ist Wickel 3 jedoch fertig, so wird er in Richtung des Pfeiles 12 durch eine hier nicht dargestellte Vorrichtung aus dem Wickelbett herausgeschwenkt. Messer 11 nimmt nunmehr die ausgezogen dargestellte Position ein, wobei die Papierbahn beim Verschwenken des Wickels in Pfeilrichtung mit der Schneide des Messers 11 in Berührung kommt und dabei durchtrennt wird.However, when winding 3 is finished, it is pivoted out of the winding bed in the direction of
Damit wird in geschickter Weise die Anordnung eines Luftkastens 10 kombiniert mit einer Bahntrennvorrichtung, wobei die Seitenwand 10.2 als Träger des Messers 11 ausgenutzt wird. Es versteht sich, daß diese Kombination aus Luftkasten und Messer auch ohne die Merkmale von Anspruch 1 anwendbar ist.This cleverly combines the arrangement of an
Die Zweite Variante ist in Figur 3 dargestellt. Diese Figur zeigt in einer Seitenansicht wiederum die wesentlichen Elemente einer Wickelmaschine, nämlich die beiden Tragwalzen 1, 2, die gemeinsam ein Wickelbett bilden, mit einer im Wickelbett befindlichen Papierrolle 3.The second variant is shown in Figure 3. This figure in turn shows a side view of the essential elements of a winding machine, namely the two
Den beiden Tragwalzen 1, 2 ist wiederum eine Einrichtung zur Entlastung mittels Druckluft von unten her zugeordnet, um das Gewicht der Papierrolle 3 wenigstens teilweise aufzuheben. Die Einrichtung umfaßt einen Luftkasten 20, der Seitenwände 10.1, 10.2 aufweist, ferner eine Abdichtung 10.3 gegen die Tragwalze 1 sowie eine Abdichtung 10.4 gegen die Tragwalze 2. Im Gegensatz zu den Ausführungsformen gemäß der Figuren 1 und 2 ist hierbei die Papierbahn 4 durch den Preßspalt zwischen Tragwalze 2 und Papierrolle 3 an die Wickelmaschine herangeführt. Sie liegt somit von Anfang an an der ihr benachbarten - bereits gewickelten - Papierlage an. Die in Druckkammer 20 enthaltene Druckluft hat somit keine Chance, zwischen einander benachbarte Papierlagen einzudringen. Entgegen der Darstellung von Figur 3 könnte die Papierbahn 4 auch in den Spalt eingeführt werden, der aus Tragwalze 1 und Papierrolle 3 gebildet ist.The two
Claims (7)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4402624 | 1994-01-31 | ||
DE4402624A DE4402624A1 (en) | 1994-01-31 | 1994-01-31 | Winder for continuous length of paper onto roll |
DE4419662A DE4419662A1 (en) | 1994-01-31 | 1994-06-07 | Winding machine for winding a running paper web |
DE4419662 | 1994-06-07 |
Publications (4)
Publication Number | Publication Date |
---|---|
EP0665178A2 true EP0665178A2 (en) | 1995-08-02 |
EP0665178A3 EP0665178A3 (en) | 1996-09-11 |
EP0665178B1 EP0665178B1 (en) | 1998-07-15 |
EP0665178B2 EP0665178B2 (en) | 2001-08-29 |
Family
ID=25933367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94119936A Expired - Lifetime EP0665178B2 (en) | 1994-01-31 | 1994-12-16 | Winding machine for winding a running paper web |
Country Status (8)
Country | Link |
---|---|
US (1) | US5562261A (en) |
EP (1) | EP0665178B2 (en) |
JP (1) | JPH08259057A (en) |
AT (1) | ATE168351T1 (en) |
CA (1) | CA2141467C (en) |
ES (1) | ES2119057T5 (en) |
FI (1) | FI946001A (en) |
NO (1) | NO302287B1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0769464A2 (en) * | 1995-10-19 | 1997-04-23 | Voith Sulzer Papiermaschinen GmbH | Blow box connecting wall |
EP0863097A2 (en) * | 1997-03-07 | 1998-09-09 | Jagenberg Papiertechnik GmbH | Winding machine with king rolls |
US5839689A (en) * | 1995-10-19 | 1998-11-24 | Voith Sulzer Papiermaschinen Gmbh | Air box for web carrier rolls and having a connecting wall |
US5848760A (en) * | 1995-10-19 | 1998-12-15 | Voith Sulzer Papiermaschinen Gmbh | Carrier roll winding machine having blow box and web severing |
EP1090842A1 (en) * | 1999-10-08 | 2001-04-11 | Voith Sulzer Papiertechnik Patent GmbH | Device for packaging rolls |
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DE9317616U1 (en) * | 1993-11-19 | 1995-03-16 | Beloit Technologies Inc | Winding machine |
DE4402874A1 (en) * | 1994-02-01 | 1995-08-03 | Beloit Technologies Inc | System for creating a perfect winding structure |
DE9414449U1 (en) * | 1994-09-06 | 1996-01-11 | Beloit Technologies Inc | Winding machine |
FI97793C (en) * | 1995-11-24 | 1997-02-25 | Valmet Corp | Method and apparatus for rolling a web of material |
DE19606758C2 (en) * | 1996-02-23 | 1999-11-25 | Voith Sulzer Papiermasch Gmbh | Winding machine |
DE19624716A1 (en) * | 1996-06-21 | 1996-11-21 | Voith Sulzer Papiermasch Gmbh | Winding machine for coiling moving paper web |
DE19750539C1 (en) * | 1997-11-14 | 1999-07-15 | Voith Sulzer Finishing Gmbh | Winding device and winding method, in particular for a slitter winder |
DE19842188A1 (en) | 1998-09-15 | 2000-03-23 | Voith Sulzer Papiertech Patent | Roll winding device |
DE10011432B4 (en) * | 2000-03-09 | 2005-04-28 | Voith Paper Patent Gmbh | Carrier roll winding machine for winding paper or cardboard webs |
FI114209B (en) * | 2002-06-14 | 2004-09-15 | Metso Paper Inc | Method for controlling the structure of a fiber web roller e.g. a paper or cardboard roll |
US7114675B1 (en) * | 2003-05-22 | 2006-10-03 | Kohler Herbert B | Dual-drum winding machine |
DE10350120A1 (en) | 2003-10-28 | 2005-06-09 | Giesecke & Devrient Gmbh | Devices for processing sheet material |
JP3874298B2 (en) * | 2004-11-05 | 2007-01-31 | フジノン株式会社 | Balloon control device for endoscope apparatus |
US20100049252A1 (en) * | 2008-08-21 | 2010-02-25 | Southern Spine, Llc | Transverse Connector Device for Extending an Existing Spinal Fixation System |
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- 1994-12-16 ES ES94119936T patent/ES2119057T5/en not_active Expired - Lifetime
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-
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US5848760A (en) * | 1995-10-19 | 1998-12-15 | Voith Sulzer Papiermaschinen Gmbh | Carrier roll winding machine having blow box and web severing |
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Also Published As
Publication number | Publication date |
---|---|
CA2141467C (en) | 2002-08-20 |
JPH08259057A (en) | 1996-10-08 |
NO302287B1 (en) | 1998-02-16 |
EP0665178B1 (en) | 1998-07-15 |
ES2119057T5 (en) | 2001-12-16 |
ATE168351T1 (en) | 1998-08-15 |
FI946001A (en) | 1995-08-01 |
NO950340D0 (en) | 1995-01-30 |
EP0665178B2 (en) | 2001-08-29 |
NO950340L (en) | 1995-08-01 |
US5562261A (en) | 1996-10-08 |
EP0665178A3 (en) | 1996-09-11 |
CA2141467A1 (en) | 1995-08-01 |
FI946001A0 (en) | 1994-12-21 |
ES2119057T3 (en) | 1998-10-01 |
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