EP1238933A1 - Method and device for continuosly winding a material web - Google Patents

Abstract

The method involves forming a roll on a drum. The strip (3) is passed over a movable pressure drum (19) which forms a reel gap with the reeling drum (35) mounted in a secondary transport device (5,7). The force in the reel gap is regulated by displacing the pressure drum. When a desired reel (37) diameter is reached the reel is removed from the pressure drum with the secondary transport device so that the strip passes to the reel clear of the pressure drum. A new drum (49) rotating at the speed of the strip is brought into a drum changeover position by a primary transport device to form anew reel gap with the pressure drum. The strip is divided across its breadth and wound onto the new drum using its new end, whereby regulation of the force in the reel gap is again realized by displacing the pressure drum. The secondary transport device takes over the new drum with the new reel and force regulation is maintained.

Description

The invention relates to a method for continuous Winding a web of material, in particular Paper or cardboard web, according to the preamble of Claim 1 and a winding machine for continuous Winding a web of material, in particular Paper or cardboard web, according to the preamble of the claim 9th

Processes and winding machines of the ones mentioned here Kind are known (EP 0 561 128 A1). you will be for example at the end of a manufacturing machine used and serve a material web for continuous winding of the material web on a drum. The known winding machine includes a horizontally displaceable, also as a carrying drum designated pressure drum, over its scope the material web is guided in areas. The material web becomes a winding roll a reel wound up, being throughout Winding process the winding roll a winding nip forms with the pressure drum. For preparation a drum change becomes an empty drum pressed to the circumference of the pressure drum, whereby another new winding gap is formed. While this winding phase becomes the material web both through the nip between the new drum and the pressure drum as well as through the closed Nip between the almost finished winding roll and the pressure drum. Then the Material web in between the full winding roll and the new reel area the pressure drum separated and the new web start wound up on the new drum. It turned out to be disadvantageously pointed out that the transfer and Wind the new start of the web onto the empty one Drum is very difficult. In many cases this requires several attempts, which in turn leads to leads to a relatively high proportion of rejects.

It is therefore an object of the invention to provide a method and to create a winding machine that this Do not have disadvantages.

To solve this problem, a method is proposed that the features mentioned in claim 1 having. The procedure is as follows Steps: The web of material is shiftable Pressure drum performed with the in a Secondary transport device rotatably held Winding roll forms a winding gap, the line force in the winding nip during this winding phase controlled / regulated by moving the pressure drum becomes. To prepare a change of drum when a desired winding roll diameter is reached the winding roll by means of Secondary transport device from the pressure drum removed so that the material web is free from the pressure drum runs to the winding roll. A new one, with Web speed rotating drum is by means of a primary transport facility in the free train pulled in and in a reel change position brought in with the new drum the pressure drum forms a new winding nip. Then the material web is cut across their width separated and with their new start of the path wound up on the new drum. During this Winding phase is the control of the line force in the winding gap between the pressure drum and the new drum again by relocating the pressure drum. Finally the new drum with the new winding roll from the secondary transport device taken over, the Control of the line force even then the pressure drum is shifted if the new drum from the secondary transport device is led. Because the empty drum before transferring and winding up the new start of the web already partially from the material web is wrapped, that is, the material web is led over a circumferential area of the new drum, while the web of material is still on the near finished winding reel can be a safe Transfer of the web and winding of the winding roll be guaranteed on the new drum. The process is characterized by a high level Exchange security.

It is also advantageous that the line force in Winding gap during the entire winding process exclusively by a relative movement of the pressure drum set against the winding roll becomes. Because of that, the bigger the weight expectant winding roll, relatively light weight of the The pressure drum can be moved quickly. This can cause jumps and fluctuations in line force be compensated very quickly. hereby is an exact, even line force in the winding gap throughout, that is, a complete one Winding process adjustable / controllable so that overall a good winding quality can be achieved can. It is also particularly advantageous that the relatively low weight compared to the winding roll the pressure drum a change of direction Relocation movement of the pressure drum very quickly is feasible.

In a particularly preferred embodiment variant the method provides that when removing the winding roll from the pressure drum the same Winding roll until it reaches a stop follows, and that then the new drum into the Drum position is brought, before the Reel change of reel with the one wound on it Wind the reel from the stop pushes back. This allows a relatively small Control effort is ensured be that the line force during a complete Winding process, i.e. from winding to Finished winding of the winding roll, by relocation the pressure drum to a desired value can be set or held exactly can.

Finally, a variant of the Preferred method, which is characterized by that the empty drum into one above a pressure drum brought lying winding position becomes. This is followed by a winding gap between the pressure drum and the empty drum by a relative movement between the pressure drum and drum formed. The arrangement of the empty drum compared to the pressure drum is chosen so that through the winding nip and through the Longitudinal axes of the empty reel and the pressure drum certain contact level compared to an imaginary one Horizontal is inclined by an angle α which in a range of 5 ° ≤ α ≤40 °, preferably from 10 ° ≤ α ≤35 °, in particular 15 ° ≤ α ≤30 °. With this position of the empty drum, the Material web separated and their free end on the empty drum wound. Because the winding gap when winding in the inclined contact plane lies, the resulting from the contact pressure Deflection and that in the contact plane lying component of the own weight of the Drum resulting deflection preferred completely, or at least essentially. As a result, a uniform shape can be seen across the web width Line force set in the winding gap become an improvement the winding quality leads.

An exemplary embodiment is also preferred the procedure, which is characterized in that after the take-over of a reel by the secondary transport device a compensation of the increase in diameter the winding roll by a preferably horizontal or at least approximate horizontal Relocation of the secondary transport facility he follows. The adjustment of the line force and thus the pressure drum is shifted independently of the balancing movement of the growing Winding roll. The load in the winding gap is therefore very precisely tunable or adjustable. The previously occasionally in the winding nip occurring fluctuations or jumps in the line force are at least largely avoided. hereby can have a defined, even winding hardness can be set, especially for an exact core winding can be ensured.

Further embodiments result from the others Dependent claims.

To solve the above-mentioned problem, a Winding machine suggested that the claim 11 features mentioned. This stands out characterized in that to prepare a drum change the new drum by means of the primary transport device shiftable to a reel change position is in which a new winding gap between the new drum and the pressure drum and that in the reel change position the material web over a circumferential area of the new drum is led. Because the new drum even before the reel change from the wound on the almost finished winding roll Material web is wrapped around, a high change security be guaranteed.

An embodiment is particularly preferred the winding machine in which the reel change position is provided above the position in which the secondary transport device the new drum takes over. The new winding gap is at an advantageous embodiment during the winding process in a through the longitudinal axes of the empty drum and the pressure drum Contact plane that is opposite an imaginary horizontal is inclined by an angle .alpha Range of 5 ° ≤ α ≤40 °, preferably 10 ° ≤ α ≤35 °, in particular 15 ° ≤ α ≤30 °. Thereby the components lying in the contact plane rise the resulting from the weight Deflection and the resulting from the contact pressure Deflection at least approximately. This allows a uniform one during winding Line force in the winding gap over the entire Web width can be ensured so that a defined First build up the winding core and then the other winding roll is possible. The improvement the winding quality in the core thus enables one exact winding of the entire winding roll.

In an advantageous embodiment of the winding machine it is intended that the diameter increase by relocating the secondary transport device equalizable and the line force in the winding gap by moving the pressure drum are adjustable, preferably adjustable, while the winding roll from the secondary transport device to be led. The balance of the growing Winding roll diameter and adjustment the line force are thus separated from two separate ones operable or working from each other Facilities, the secondary transport facility and the pressure drum. By compared to the weight of the growing winding roll relatively light weight of the pressure drum can quickly shift and thus jumps and Fluctuations in line force are quickly compensated become. It is particularly advantageous that through the relatively low weight of the pressure drum Change of direction of the displacement movement very much can be carried out quickly by means of the pressing device is. Due to the independent relocation movements the pressure drum and secondary transport device can be - preferably constant - good winding result can be achieved.

An embodiment of the is also preferred Winding machine in which the at least one pressing device, with the help of which the pressure drum can be moved is, as - preferably hydraulic - piston and cylinder unit is formed. At a The first variant is the maximum stroke of the Piston is less than half the material layer thickness a finished winding roll. Despite the relatively small hubs, i.e. the route that the pressure drum can be moved in one direction, becomes the pressure system during the winding process not changed. The relocatable pressure drum remains up to a few seconds during the drum change practically constantly in contact with the winding roll. The winding machine is characterized by a simple and inexpensive construction. at a further, second embodiment variant provided that the maximum stroke of the piston at least greater than or equal to the layer thickness of a finished one Winding roll is. This makes it possible the relocatable secondary transport device through a stationary secondary storage to replace, in which the drum held rotatable is. With stationary storage can an optimal rigidity of the drum clamping be guaranteed so that within the winding machine possible vibrations practically does not affect the line force / curve effect. So there is constant drum tracking not necessary, so that the mechanical structure is simplified can be.

Finally, an embodiment of the Winding machine preferred, in which the primary and of the secondary transport device only one single drive, preferably center drive, is assigned, with the help of a torque the drum can be applied. That of the primary transport device assigned drive is preferably also to accelerate an empty one Drums on the running speed of the material web used.

Further advantageous embodiments result from the other subclaims.

Figuren 1 bis 4

jeweils eine schematische Prinzipskizze eines Ausführungsbeispiels der erfindungsgemäßen Wickelmaschine in verschiedenen Wickelphasen;

Figur 5

eine Prinzipskizze der Wickelmaschine gemäß den Figuren 1 bis 4 mit einer Ausführungsform einer Steuerung für die Linienkraft im Wickelspalt;

Figur 6

eine Prinzipskizze eines weiteren Ausführungsbeispiels der Wickelmaschine mit einer Regeleinrichtung zur Einstellung der Tambourwechselposition;

Figur 7

eine Prinzipskizze eines in Figur 3 dargestellten Tambours in einer Tambourwechselposition;

Figuren 8a bis 8e

jeweils eine stark schematisiert dargestellte Prinzipskizze der Wikkelmaschine gemäß den Figuren 1 bis 5 in verschiedenen Wickelphasen;

Figuren 9 bis 11

jeweils eine detaillierte Prinzipskizze eines dritten Ausführungsbeispiels der Wickelmaschine;

Figuren 12 und 13

jeweils eine schematische Prinzipskizze weiterer Ausführungsbeispiele der Wickelmaschine und

Figuren 14a bis 14e

jeweils eine stark schematisierte Darstellung eines sechsten Ausführungsbeispiels der Wickelmaschine.

The invention is explained in more detail below with reference to the drawing. Show it:

Figures 1 to 4

each a schematic sketch of an embodiment of the winding machine according to the invention in different winding phases;

Figure 5

a schematic diagram of the winding machine according to Figures 1 to 4 with an embodiment of a control for the line force in the winding gap;

Figure 6

a schematic diagram of another embodiment of the winding machine with a control device for setting the reel change position;

Figure 7

a schematic diagram of a reel shown in Figure 3 in a reel change position;

Figures 8a to 8e

in each case a schematic diagram of the winding machine according to FIGS. 1 to 5, shown in highly schematic form, in different winding phases;

Figures 9 to 11

each a detailed schematic diagram of a third embodiment of the winding machine;

Figures 12 and 13

each a schematic schematic diagram of further embodiments of the winding machine and

Figures 14a to 14e

each a highly schematic representation of a sixth embodiment of the winding machine.

The winding machine described below is generally used for winding a material web. The winding machine can be at the end of a machine for the production or finishing of a material web, for example a paper web to convert the finished material web into a Wind up the winding roll. The winding machine can but also used for rewinding finished winding rolls become. By way of example only, it is assumed that this is a winding machine for Winding a continuous paper web.

Figures 1 to 4 each show a schematic Schematic diagram of a first embodiment a winding machine 1, which is used for winding a following generally referred to as material web 3 Paper web on a drum, winding core or the like serves. One goes from Figures 1 to 4 Sequence of functional steps of the winding machine 1 out. The winding machine 1 comprises in this embodiment two secondary transport devices 5 and 7, each one on second rails 9 include movable secondary carriage 11. The Rails 9 are parallel to an imaginary horizontal arranged and on a machine frame 13 attached. The secondary transport facilities 5, 7 are used for rotatable holding and guiding one reel along a second, horizontally extending guideway 14, which in an imaginary Level E lies in dashed lines. This spans a surface that is perpendicular to the Image plane of Figure 1 is. Furthermore are on attached to the machine frame 13 guide rails 15, the parallel to an imaginary horizontal are arranged. A bearing journal Drum can be placed on the guide rails 15 are and are borne by them, that is, that Weight of the reel and the weight of the The reel is wound by the Guide rails 15 supported. With one in particular preferred — not shown in FIGS. 1 to 4 — Embodiment of the winding machine 1 is only a single secondary transport device provided whereby the structure of the winding machine is simplified.

The winding machine 1 further comprises a means a center drive indicated with a symbol 17 drivable pressure drum 19 which is rotatable held on a carriage 21 which is movable on first rails 22. at this embodiment are the rails 9 and 22 arranged parallel to each other. The distance between the longitudinal axis 23 lying in plane E. the pressure drum 19 and the guide rails 15 is constant. The guide carriage 21 is one here as a hydraulic piston and cylinder unit trained pressure device 25 assigned, which is attached to the machine frame 13. The Pressure device 25 has one in a cylinder 27 guided piston 29, which with one on the Guide slide 21 engaging piston rod 31 is firmly connected. When the Piston rod 31 becomes the guide carriage 21 and thus the pressure drum also referred to as the support drum 19 in FIG. 1 in the direction of an arrow 33 shifted to the right. When moving in the piston rod 31 in the cylinder 27 takes place Relocation of the pressure drum 19 in Figure 1 after Left. The maximum stroke of the piston 29, that is to what extent extend the piston rod 31 out of the cylinder 27 or can retract, is preferred less than half the material layer thickness S a finished winding roll. Another Embodiment is provided that the Stroke of the piston 29 greater than or equal to the material layer thickness S is a finished winding roll. at another advantageous embodiment the pressure device two hydraulic piston and Cylinder units to move the pressure drum and generate a desired line force.

As can be seen from FIG. 1, the pressure drum forms 19 with one wound on a reel 35 Winding roll 37 a winding gap, that is, the pressure drum 19 forms together with the winding roller 37 a nip. The pressure drum 19 touches the winding roll over its entire length their scope. On the Tambour 35, which is in this winding phase by the secondary transport device 5 rotatable held and led, intervenes a secondary drive 39 indicated by a symbol, which is formed here by a center drive. With the help of the secondary drive 39, a torque on the lying on the guide rails 15 and held by the secondary transport device 5 Drum can be applied.

The guide rails 15 are in this way on the machine frame 13 attached that the longitudinal axis 41 of the with its journals on the guide rails 15 overlying drums 35 in the same level E lies like the longitudinal axis 23 of the pressure drum 19th In another advantageous embodiment the winding machine 1 are the pressure drum 19 and the drum lying on the guide rails 15 arranged at different levels (figures 9, 12, 13), but this does not affect the advantageous Operation of the winding machine 1 has.

The material web 3 is on the pressure drum 19th performed and wound on the winding roll 37. The line force in the winding gap is determined by means of the Pressure device 19 assigned to the pressure device 25 controlled, that is, the pressure drum 19 with a defined force on the circumference of the winding roll 37 pressed, creating a desired winding hardness the winding roll or an even one Winding hardness curve can be adjusted. In another embodiment, that the line force is regulated in the winding gap is, that is, the pressure device 25 is part a control loop that automatically takes the line force holds at a desired value or established. By relocating the pressure drum 19 by means of the pressure device 25 fluctuations the line force safely balanced or be avoided so that continuously a desired winding hardness can be achieved. This means that the line force can also be for example, be kept constant, if there is a fault in the winding process. A For example, disruption can be a not entirely precise Procedure of the secondary transport device be, so that the position of the pressure drum 19 and the winding roller 37 formed winding gap shifted slightly, or an unbalance the pressure drum and / or the winding roll.

The larger diameter of the winding roller 37 is due to a displacement of the winding roll 37 in Balanced in the direction of arrow 33 to the right. For this purpose, the secondary transport device 5 move to the right, causing the Drums 35 and thus the winding roll 37 takes place. For moving the secondary transport devices 5 and 7 a lifting device 43 is provided here, the one threaded spindle driven by a motor 45 47 includes.

Above the pressure drum 19 is one of one primary transport device, not shown, empty drum 49 in a standby position arranged (Figures 1 and 2). For preparation the drum 49 becomes a drum change with the help of the primary transport device from the Standby position in a reel change position relocated to the primary transport facility, their structure in the following is still described, stationary and rotatable is held (Figure 3). During the empty drum 49 is in the reel change position, is caused by a relative movement between the pressure drum 19 and empty drum 49 a winding nip formed, that is, the pressure drum and the empty reels touch each other on their circumference, over their entire length. On the drum change position empty drum 49 is after the separation of the material web by means of a Not shown, known separation device (symbolically in Figures 8c and 14c represented by an arrow T) the web with her new start of the web. By means of the primary transport device can the drum 49 along a first guideway from the standby position in the reel change position and from this be moved to a finished winding position (Fig 4). In connection with the present invention becomes a position under "Finished winding position" of the drum 49 understood, in which this with its bearing journal rests on the guide rails 15. The first guideway can have a curved, preferably part-circular, and / or have a linear course. The primary transport facility is not shown, also as Primary drive designated center drive for the of this drum held respectively Assigned winding roll, by means of which the reel with a drive and / or braking torque can be.

In Figure 3, the empty reel 49 is in the reel change position arranged in the after a The new web start is cut onto the Tambour 49 is wound up. The drum 49 forms with the Press drum 19 a winding nip, which in a Contact plane P lies opposite an imaginary one Horizontal is inclined by an angle α which in a range of 5 ° ≤ α ≤40 °, preferably from 10 ° ≤ α ≤35 °, in particular 15 ° ≤ α ≤30 °. The angle α is approximately as an example 32 °. Angles α have been found to be particularly advantageous highlighted, which are in the range of 15 ° to 30 °. The fact that the winding gap in the inclined Pressing plane P lies, which rise from the pressing force resulting deflection and that in the contact plane P lying component of the dead weight resulting deflection of the drum each other so that a uniform line force set in the winding gap over the web width can be. This is a good winding quality achievable.

Below the pressure drum 19 is a pressure element provided that in this embodiment of one over the entire width of the winding roll 37 extending, also referred to as a squeeze roller Pressure roller 51 is formed. The drive roller 51 is by means of a not shown Management facility to the extent of with the Pressure drum 19 a winding roll forming a nip pressed. The pressure roller 51 serves to entraining air between the winding layers to prevent the winding roll, for example, if the material web 3 in a free train of the Pressure drum to the winding roll runs. The pressure roller 51 can be from a drive, for example Center drive, applied with a torque and be accelerated to web speed. In another - not shown in the figures - The embodiment is the pressure element formed by a stationary pressure brush, the on at least one across the entire width the winding roll extending beam attached is. By shifting the bar, the Pressure brush placed on the winding roller, whereby the air carried in between the winding layers is practically deleted. The pressure brush has a simplified compared to the pressure roller and therefore less expensive to build on because they not rotating and therefore an additional drive is not needed. This also applies to a so-called Air brush; the one is across the web width extending air blowing nozzle, which is non-contact in the sense of an air squeeze device acts on the winding roll.

In the following, the function of the winding machine 1 are explained in more detail using a winding process: The material web 3 is on the pressure drum 19th guided and on by the secondary transport device 5 guided winding roll 37 wound (Figure 1). Before the winding roller 37 its final diameter reached, the pressure roller 51 to the Circumference of the winding roller 37 pressed (Figure 2). The Material web 3 is thus both through the winding gap between pressure drum 19 and winding roller 37 as well as through the winding gap between the pressure roller 51 and winding roller 37 out. For transfer the continuously fed material web 3 on the empty reel 49, the winding roll 37 by means of the secondary transport device 5 along the guide rails 15 in the direction of arrow 33 procedure, whereby the distance between the Longitudinal axis 23 of the pressure drum 19 and the Longitudinal axis 41 of the winding roller 37, both in here the level E, enlarged and between the pressure drum 19 and the winding roller 37 a space 53 is formed (Figure 3). The material web 3 is in the area of the space 53 in one free train from the pressure drum 19 on the winding roll 37 transferred. The pressure roller 51 will while the secondary transport device 5 with the Winding roller 37 is moved, the winding roller 37 tracked so that the line force in the winding gap between pressure roller 51 and winding roller 37 maintains a desired value until the pressure drum 19 against at least one stop 54 moves. In this embodiment, the stop is 54 realized in that the piston 29 of Pressure device 25 on the inner wall of the cylinder 27 triggers, that is, as shown Figure 3- right end position reached, in which Piston 29 abuts the inner wall of the cylinder 27. The pressure drum 19 thus has a fixed Position on.

Then the one in standby position from above arranged on the running speed of the material web 3 accelerated empty drum 49 along the first track down and in the space 53 between the pressure drum 19 and the winding roller 37 in the reel change position introduced (Figure 3). The one against the attack 54 driven pressure drum 19 is in the first Guide track arranged so that when retracting the empty reel 49 in the reel change position brought into contact with the pressure drum 19 becomes. The drum 49 pushes the pressure drum 19 from the stop 54 against the direction of arrow 33 back (not shown), whereby the formation of the winding gap / nip is completed is. Then using a not shown Separating device, for example in Area of the space 53 is arranged, the Material web separated across the width and the new web start wound up on the drum 49. The drum 49 remains in a variable period of time the reel change position, for example until the The winding of the core of the new winding roll has been completed is. Then the one from the primary conveyor rotating drum 49 along the first guideway from the reel change position led into the finished winding position and lowered directly onto the guide rails 15 (Figure 4). The Tambour 49 from the second secondary transport device arranged in the takeover position 7 taken over, that is led and held. In the shown in Figure 4 Some winding phases are not shown Lay the material web 3 on the Primary drive or one of the secondary transport device 7 assigned center drive driven Drum 49 wound up.

After the finished winding roll 33, for example with the help of the secondary drive 39 and / or the pressure roller has been slowed down, this can the secondary transport device 5 is deployed be, while the pressure roller 51 in its in Figure 1 position shown is moved back. If the secondary drive 39 two secondary transport devices 5 and 7 is assigned after braking the full winding reel, the Secondary drive with the drum 49 effectively connected and the primary drive and the primary transport device detached from the drum 49. The growing one Diameter of the wound on the drum 49 - not shown in Figure 4 - winding roll is due to a relocation of the secondary transport facility 7 in the direction of arrow 33 the guide rails 15 balanced. Doing so the line force in the winding gap between the pressure drum 19 and the one wound on the drum 49 Winding roll due to a shift of the pressure drum 19 by means of the pressure device 25 during the entire winding process on a desired one Value held.

In Figure 1 is one below the pressure drum 19th arranged, rotatable on the machine frame 13 attached web guide roller 55 shown. The web of material 3 is one of the web guide roller 55 -in Direction of travel of the material web seen - upstream Unit 57, which here is purely an example Press device 59 is guided to the web guide roller 55 deflected by this and on to the pressure drum 19 headed. The web guide roller 55 of the material web 3, preferably in a peripheral region from 155 ° to 205 °. The wrap angle is at least 150 °, even then, if the pressure drum 19 during the winding process is shifted. This ensures that the line force in the winding gap through a change in the longitudinal tension in the range between the unit 57 and the pressure drum 19 is not affected. The pressing device 59 comprises two press rolls forming a press nip, from which - as shown in Figure 1 - at least one is driven.

To the winding process from the fluctuations in the production process the material web largely decouple, the material web guide is preferred designed so that the pressure drum 19 by the material web 3 is wrapped around 180 °. The fact that the material web over a relative large circumferential area of the pressure drum fluctuations in the train have practically none Influence on the pressure of the pressure drum the winding roll and thus the line force. Of further small movements of the pressure drum compensated, so that no web train fluctuations caused; the pressure drum is therefore without reaction. Due to the relatively large wrap angle can still be ensured be that a slight inclination of the Pressure drum does not lead to undesirable wrinkling leads. It is also possible to only use stationary Upstream of guide and spreader rollers of the pressure drum, that of the relocatable pressure drum do not need to be tracked, which means the structure the winding machine can be simplified.

From the description of Figures 1 to 4 results the procedure mentioned above is straightforward. This provides that the material web over a - preferably horizontally - movable pressure drum is performed with the in a secondary transport facility rotatable winding roll forms a winding gap, the line force in the winding gap due to a shift of the pressure drum is controlled or regulated. When reached a desired winding roll diameter is used to prepare a change of drum Winding roll by means of the secondary transport device removed from the pressure drum, so that the material web free from the pressure drum to the winding roll running; a free train is thus formed. A new one, that is to say an empty one, at web speed Rotating drum is by means of a primary transport device in a reel change position brought in, with the pressure drum forms a winding gap. Then the material web separated across its width and the new web start wrapped on the new reel. In this winding phase is the control of the Line force in the winding gap between the pressure drum and the new drum or the one on top of it wound winding roll in turn by a Relocation of the pressure drum realized. Finally takes over the secondary transport facility the new drum with the new winding roll, whereby the control of the line force continues by moving the pressure drum.

The formation of a winding gap between the pressure drum 19 and the empty drum is this realizable that the empty drum along the first Guideway is shifted and against the in the first guide track arranged pressure drum abuts. Another version is provided that the winding gap by a shift the pressure drum 19 with the help of the pressure device 25 towards the in the reel change position arranged drum is formed. Of course, both the Tambour 49 and also the pressure drum 19 moved towards each other to form a winding nip. Independently of how the winding nip is formed sudden fluctuations in line force, like them for example at the moment the drum is handed over from the primary transport device to the Secondary transport device occur with the help the displaceable pressure drum compensated respectively be avoided. The line force can that is, continuously exactly at a desired value being held.

The pressure drum 19 can, as in Figures 3 and 4, as a deflection adjustment roller 140 are formed, the roll shell 141 by means of a series of support members 142 on a stationary Yoke 143 is supported, which gives an arched Outer contour of the pressure drum 19 achieved. Of those acting in the direction of the winding gap Support elements 142 is in the view according to the figures 3 and 4 only one recognizable. The structure of the Deflection adjusting roller 140 is known per se (DE-OS 25 55 677), so that this is not described in detail becomes. The support members 142 are preferred individually, that is, independently of each other controllable, which creates a desired curvature the roll shell 41 can be adjusted. The yoke 143 is about a fixed axis, here the longitudinal axis 23 rotatable. Those cooperating with yoke 143 Support elements 142 are when the Yokes 143 pivoted such that their direction of action follows the traveling movement of the winding nip.

By setting a desired curvature of the The outer contour of the pressure drum can be guided over it Material web - transverse to the running direction of the web seen - defined tension, preferably before the material web runs into the winding nip. This can cause wrinkling on the Prevent winding roll wound winding layers and thus the winding result can be improved. The Deflection of the pressure drum is in the longitudinal direction seen in the drum, as described above, preferably adjustable in sections. This allows the desired width extension of the material web Varying the outer contour of the pressure drum affects preferably be set. At a An advantageous embodiment is the pressure drum 19 part of an active vibration damping system, that is the pressure drum capable of oscillation. In connection with the present Invention is termed "capable of vibrating" understood that the pressure drum a rapid shift movement towards the Can perform winding roll and opposite. The pressing device 25, that is to say the one in FIGS. 1 to 4 hydraulic piston and cylinder unit shown can therefore change direction Displacement movement of the pressure drum 19 very much run quickly.

Figure 5 shows a schematic diagram of the winding machine according to Figures 1 to 4 with an embodiment a controller. Parts that match those in the figures 1 to 4 match, are with the same reference numerals provided so that in this respect to the description is referred to Figures 1 to 4. To control the winding machine 1 is a Control unit 61 provided the motor 45 of the Thread spindle depending on the speed the diameter increase of the winding roller 37 controls. The diameter increase of the winding roller 37 is measured by means of a measuring device 63. The Position of the secondary transport device 5 changed so alone, that means exclusively corresponding to the increase in the winding roll diameter. The magnitude of the line force in between the pressure drum 19 and the winding roller 37 formed The winding gap is alone, that is to say exclusively by a method of holding the pressure drum 19 Guide carriage 21 determined, preferably by means of a control device 65 regulated. This includes a measuring device 67 for the line force, a controller 69, a setpoint generator 71 and a Control unit 73. The measuring device 67 is over a measuring line 75 connected to the controller 69 or flows into this. The setpoint generator 71 is connected to the controller 69 via a line 75 ' and indicates the desired setpoint.

The controller 69 is in turn connected via a line 77 the control unit 73 connected.

In the event that the measured by the measuring device 67 Value of the line force in between the pressure drum 19 and the winding roller 37 formed Winding gap from that specified by the setpoint device If the setpoint deviates, controller 69 outputs it via the line 77 a signal to the control unit 73. This thereupon changes the pressure in the cylinder 27 of the pressing device 25 such that the measured Line force value approximates the target value. hereby the line force can also be for example, be kept constant, if there is a fault in the winding process. A For example, disruption can be a less than precise one Method of the secondary transport device 5, so that the position of the pressure drum 19 and that of the secondary transport device 5 guided winding roll 37 formed nip shifted slightly.

In a preferred embodiment, that the pressure drum 19 for controlling the Line force regardless of the driving speed the secondary transport device is displaceable. Furthermore, it is possible that with the secondary transport device interacting lifting device 43, that is, the one driving the threaded spindle 47 Motor 45 is controllable so that the Position of the between the pressure drum 19 and the Winding roll 37 formed nip essentially is constant while the winding roll 37 is on the guide rails 15 rests. Under "constant Position "of the winding nip becomes its position within the winding machine 1 understood, that is, the winding roller 37 is by means of the secondary transport device 5 at a speed in Shifted in the direction of arrow 33, so that only the diameter increase of the winding roller 37 compensated becomes.

In another embodiment, that the secondary transport device 5, 7th assigned lifting device 43 can be controlled in such a way that the position of the between the pressure drum 19 and the winding roller 37 formed nip with increasing winding roll diameter during of the winding process, for example in a range from 50 mm to 200 mm.

Figure 6 shows a schematic representation of a Another embodiment of the winding machine 1. Parts which correspond to those in FIGS. 1 to 5, are provided with the same reference symbols, so that in this respect to the description of Figures 1 to 5 is referred. In Figure 6 is part of a Embodiment of the primary transport device 79 shown. This includes two primary swivel levers 81, of which in this view only one is shown. The primary swivel levers 81, on which the new drum 49 is rotatably held are around a parallel to the longitudinal axis of the drum 49 extending axis 83 pivotable. The primary swivel levers 81 are inside the winding machine 1 stationary, that is, the axis 83 points - at least during a complete Winding process - a fixed, unchangeable position on the machine frame 13. The primary swivel levers 81 is one on the machine frame, for example 13 attached lifting device 85 assigned at least one associated with a primary pivot lever -preferably hydraulic- piston and cylinder unit includes. The piston and cylinder unit comprises a piston guided in a cylinder 87 89, with one on at least one of the primary pivot levers 81 engaging piston rod 91 firmly connected is. When the piston rod extends 91 from the cylinder 87 become the primary pivot lever 81 counterclockwise and at a clockwise movement about the axis 83 pivoted. Of course, the lifting device 85 also, for example, two piston and Cylinder units each include a primary pivot lever 81 are assigned.

The primary pivot levers 81, as in FIG. 6 shown - the empty reel 49 in the reel change position hold are in this winding phase opposite an imaginary, with a dashed line horizontal H shown inclined by an angle w, which is about 26 ° here. The angle is w adjustable by means of the lifting device 85. For setting of the angle w is a control device 93 provided a controller 69 ', a setpoint generator 71 'and a measuring device 67' for the detection the position of the primary drive lever 81 includes. The setpoint generator 71 'is via a signal line 95 with the controller 69 'and the measuring device 67 'via a signal line 97 to the controller 69 'connected. By the angle w and thus the location to change the reel position is the Setpoint generator 71 'entered a new setpoint. With the help of the controller 69 'a target / actual comparison is made carried out. In the event of a deviation, the Controller 69 'via a line 77' a signal on hydraulic control valve 99, which then the Flow between a pump 101 and one of the Control valve 99 to the cylinder 87 leading medium line 103 releases. The medium conveyed by the pump, for example a hydraulic fluid or a gas, can optionally be in one of the pistons 89 separate subspaces of the cylinder 87 are introduced. If the medium in the in the representation according to FIG. 6 upper subspace - as indicated with an arrow - initiates, drives the piston rod 91 into the cylinder 87, whereby the angle w is reduced. With an inflow of the medium in the lower part of the cylinder 87 extends the piston rod 91 from the cylinder, which increases the angle w. After the desired angle w is set, interrupts the control valve 99 the connection between the Pump 101 and line 103. To backflow of the medium from the cylinder 87 in the direction of the control valve Preventing 99 is a check valve 105 provided.

With the help of the control device 93 can A defined time during the winding process Angle w can be set. Particularly advantageous is also that the position of the reel change position predetermined before the next drum change can be, for example, a Angle w can be set, which is zero (For example, according to Figure 14c).

Figure 7 shows a view of the drum 49 in the shown in Figure 3 winding phase in which the reel 49 is in the reel change position and with the pressure drum 19 a winding nip forms. In Figure 3, the direction of view of the Drum 49 marked with an arrow 107. The Force with which in this embodiment Press drum 19 pressed against the circumference of the drum 49 leads to one with a double arrow 109 shown deflection of the drum 49. Die the curvature of the The outer contour of the drum 49 is shown schematically with a Line 111 shown. The in the contact plane P lying component of the own weight of the Drum 49 resulting deflection is with a Double arrow 113 shown. Is schematic with a line 115 the curved outer contour of the unsupported drum.

As can be seen from FIG. 7, the deflections act in opposite directions, their Amount is at least substantially the same. The Deflections are therefore preferred completely, or at least essentially on it that a uniform line force in the winding gap adjusted across the entire width of the material web can be.

Figures 8a to 8e each show a highly schematic Representation of part of the based on the previous figures described winding machine 1 in different winding phases. Based on Figures 8a to 8e will already be the above briefly described drum changing process in more detail explained.

Before the reel change, an empty reel 49 from the stationary winding station, namely from the Primary transport device 79, the primary pivot lever here 81 includes, adopted (Figure 8a). For this purpose, the primary pivot levers 81 are opposed clockwise up to that shown in Figure 8a Empty drum takeover position swiveled. The empty drum 49 is by means of Primary drive accelerated to synchronous speed, that is, the peripheral speed of the empty drum 49 corresponds to the running speed the material web 3. The pressure element, here the pressure roller 51 is almost to the extent of full winding roller 37 pressed. Not the one secondary transport device shown held and driven by the secondary drive Winding roll 37 is together with the pressure roller 51 in the direction of arrow 33 from the pressure drum 19 removed. The pressure drum 19 is the Wrapping roller 37 tracked to a desired one To maintain line force in the winding gap, until the pressure drum 19 against a stop 117 drives, causing their displacement movement is stopped. The winding roller 37 continues in the direction of arrow 33, creating a free web train between the pressure drum and the winding roll is formed.

The fact that the pressure drum before changing the reel first drives against a stop 117, instructs the pressure drum before each reel change a fixed, defined position. If the distance the pressure drum and the full winding roll 37 has reached at least a minimum value the new reel 49 in the reel change position in which the drum on the circumference of the pressure drum is present (Figure 8c). The formation of the winding gap / nips takes place automatically because the at the stop 117 pending pressure drum at this time in the path of the empty drum 49 is arranged. The nip is considered closed when the pressure drum of the empty drum 49 so far from the stop 117 in the opposite direction of the arrow 33 was pushed back that the pressure drum to Example using the control device 65 (FIG. 5), the desired contact pressure against the empty drum 49 exercises.

For clarification, the is in Figures 8a to 8c Distance x of the longitudinal axis 23 of the pressure drum 19 to the stationary axis 83 the primary pivot lever 81, which lies on an imaginary vertical V, immediately before changing the reel (Figure 8a) while the drum change (Figure 8b) and after Drum change (Figure 8c) shown. In the winding phase according to Figure 8b, in which the pressure drum 19 has already hit the stop 117, the distance x2 is greater than that Distance x3, which is after pushing back the pressure drum through the into the reel change position relocated drum 49 sets. It can also be seen that before the pressure drum against the Stop 117 moves, this a distance x1 to Axis 83 which is smaller than the distance x2.

After the winding gap has been formed, one of the known methods the material web in the area of free move separated and the new start of the path the drum 49 performed. Particularly advantageous is that the one arranged in the reel change position empty drum 49 already before the separation a small circumferential area from the material web is entwined, which makes the changing process significant relieved, so that a high security when changing the reel can be guaranteed. After this The drum change 49 is preferably as long as held in the reel change position until formation of the winding core of the new, on the reel 49 wound winding roll 119 completed until, for example, the winding roll 119 is one Layer thickness S has from 20 mm to 100 mm.

During the core winding, i.e. when the drum 49 rotatably held on the primary pivot levers 81 is, the pressure drum 19 is removed accordingly the diameter increase of the winding roll 119 from the longitudinal axis of the reel 49. From the amount forth corresponds to the displacement of the pressure drum exactly the horizontal component of the radius increase. During the winding of the new winding roll 119 the full winding roll 37 is braked and from the variable winding station, i.e. the secondary transport device applied. With a preferred one Embodiment in which only one secondary transport device is provided, the Secondary transport device to take over the after the guide rails 15 deposited drum 49 shifted left towards the pressure drum. at the embodiment of the winding machine in which two secondary transport devices are provided , they become alternating, i.e. alternating used to guide a new winding roll. The two secondary transport devices only carry every second new winding roll. During the reel with the one wound on it new winding roll from the secondary transport device the radius increase the winding roll by a corresponding shift of the reel with the help of the secondary transport device balanced. The amount corresponds the displacement of the drum in the horizontal direction exactly the radius increase.

In another embodiment of the with the 8a to 8e described winding machine feasible procedure is provided that led by the secondary transport device Winding roll 37 continuously without intermediate stop from the position shown in FIG move the position shown in Figure 8d becomes. At the same time, the primary swivel levers move 81 and the new drum 49 from the one in figure 8b position to that shown in FIG. 8e Position, preferably also without a stop. The drum change takes place when the new one shifted by means of the primary swivel levers Drum 49 the position shown in Figure 8c passes. The speed of the movements of the guided by the secondary transport device Winding roll 37 and with the help of the primary pivot lever relocatable reels 49 can be constant be or at least preferably change anywhere. The sequence of movements the primary swivel lever holding the new Tambour 49 81 is simply a time-dependent change of the setpoint generator 71 '(FIG. 6) supplied setpoint for the angle w controllable.

Figures 9 to 11 each show a side view a part of a further embodiment of the Winding machine 1 in different winding phases. The Construction of the winding machine 1 essentially corresponds that described with reference to Figures 1 to 8 Winder. In the differences following discussed in more detail. Same parts are provided with the same reference numerals, so that so far to the description of the previous figures is referred.

In the following, the function of the winding machine will be described first 1 explained in more detail using a winding process become: The material web 3 is over the pressure drum 19 out and on from the secondary transport device 5 guided winding roll 37 driven by the secondary drive 39 is wound up (Figure 9). Before the winding roll 37 reaches its final / target diameter, is above the pressure drum 19 to the empty drum 49 the primary swivel levers 81 rotatably attached, that is, the movement of the empty drum 49 is limited to rotation about its longitudinal axis, and shifted to the reel change position.

From Figure 9 it can be seen that the Drum change position located drum 49 such spaced from the pressure drum 19 is that no winding gap is formed yet. In the reel change position lies the center of the empty Drums 49 on an imaginary, dashed shown second straight line G2, which is essentially parallel to an imaginary, first straight line G1 runs and compared to this on a higher Level is arranged. As can be seen from FIG. 9, is the center of the pressure drum 19 on the parallel to the guide rails 15 Straight line G1. When changing the reel before the transfer of the material web 3 the empty one Drum 49 from that assigned to the primary pivot levers 81 Primary drive 121 accelerates and up Brought running speed of the material web 3. To transfer the continuous material web 3 on the empty drum 49 the driving speed the secondary transport device leading the winding roller 37 5 by appropriate control of the screw 47 driving Motors 45 increased. The pressure drum 19 remains in constant contact with the winding roller 37, the means, the pressure drum is when the Winding roller 37 along the linear, second guideway 14 this tracked so that the line force kept at a desired value in the winding nip becomes.

As can be seen from Figure 9, the distance between the lines G1 and G2 smaller than the sum the radii of the pressure drum 19 and the drum 49. This moves the pressure drum 19 at one 9 to the right against the in Drum change position arranged drum 49. This corresponds to the winding phase shown in FIG. 10. The moment between the pressure drum 19 and the empty drum 49 a winding gap is formed, but at least shortly afterwards, the drum change is triggered. When changing the reel the material web 3 by means of a the separating device, not shown in FIGS. 9 to 11 severed and the new start of the web on the Drum 49 wound up. At the moment of changing the drum, before separating and transferring the Material web 3 on the empty reel is already a space between the winding roller 37 and the pressure drum 19 is formed.

It should be noted that the pressure drum before does not take a fixed position when changing the drum, therefore not as in the case of FIGS. 1 to 8 described embodiment - against a stop drives, but directly against the primary swivel levers 81 in a fixed position (reel change position) held empty drum 49.

As shown in FIG. 10, the piston 27 the pressing device 25 at this moment a distance to the inner wall of the cylinder 29; The piston 27 is therefore not in an end / stop position.

After the new web start wound up on the drum 49 is, this is by swiveling the Primary pivot lever 81 clockwise about axis 83 along the first, here part circular Guide track 122 transferred to the finished winding position. During the swiveling process, the drum 49 of the primary pivot levers 81 rotatable held and supported. The Drum 49 will be there constantly driven by the primary drive 121, the means that this is also along the first Guideway 122 shifted.

In Figure 11, the new drum 49 is in its finished winding position represented, that is, this lies with its trunnions on the guide rails 15 on the weight of the reel 49 and the wound on it - not shown - only Support a winding roll that has a few winding layers. During the transfer of the reel 49 from the reel change position (Figures 9 and 10) in the finished winding position (FIG. 11) becomes the pressure drum 19 by means of the pressing device 25 shifted along the line G1, so that the line force in the winding nip during the entire transfer is kept at a desired value.

In Figure 11, the winding roll 37 is in a deployment position arranged in the winding roll by means of known devices from the guide rails 15 lifted and out of the winding machine 1 can be applied. In the case of FIGS to 11 illustrated embodiment of the winding machine 1 is only a single secondary transport device and only one secondary drive 39 is provided. These are already to be adopted in FIG. 11 of the drum 49 from the primary transport device 79 to the left in the direction of the pressure drum 19 relocated. The secondary transport device 5 and the secondary drive 39 can be used together or independently of one another in the takeover position be relocated. While the secondary transport device 5 the drum 49 from the primary pivot levers 81 takes over, becomes the secondary drive 39 coupled to the drum 49, so that temporarily both drives 39 and 121 on drum 49 are coupled. Thereafter, the primary drive 121 uncoupled from the drum 49 and along the first Guideway counterclockwise to the reel change position moved back. The increase in diameter the one on the of the secondary conveyor 5 guided reel 49 wound, winding roller, not shown, is now during finished winding by relocating the secondary transport device 5 and thus the drum 49 balanced in the direction of arrow 33 to the right. The line force in the winding gap between the winding roll wound on the reel 49 and the pressure drum 19 is due to a shift the pressure drum 19 controlled as described above.

For reasons of clarity, only in FIG. 10 shows a control of the winding machine 1, which comprises a control device 65. to Explanation of the structure and operation of the Control device 65 is used to describe the figure 5 referenced.

In a preferred embodiment, that the pressure drum 19 for controlling the Line force regardless of the driving speed the secondary transport device 5 displaceable is. It is also possible that the secondary transport device 5 assigned lifting device 43, that is, the one driving the threaded spindle 47 Motor 45 is controllable so that the Position of the between the pressure drum 19 and the Winding roll 37 formed nip essentially is constant. Under "constant position" of the Winding nip will be its position within the Understanding winding machine 1. The winding roll 37 is so by means of the secondary transport device 5 with only the diameter increase of Winding roll 37 compensating speed in Shifted in the direction of arrow 33.

In another embodiment, that the secondary transport device 5 assigned lifting device 43 can be controlled in such a way that the position of the pressure drum 19 and the winding roll 37 formed winding gap increasing roll diameter during the Shifts, for example, in one Range from 50 mm to 200 mm.

The winding gap is in a preferred embodiment when winding an empty drum always in the same place, that is, its position inside the winding machine is during one Drum change constant, but at least essentially constant. As a result, when winding one empty drums always have the same angular relationships, for example the one acting on the drum Contact pressure, before, so that the deflection of the empty Drums calculated and balanced accordingly can be to a desired line force curve set in the winding gap. Of course it is also in this embodiment with one described for example with reference to FIG. 6 Control device 93 possible, the reel change position, in which the winding gap is formed will postpone.

Figure 12 shows schematically a side view of a Another example of the winding machine 1. Parts that correspond to those on the basis of FIGS described, have the same reference numerals provided so that in this respect to the description reference is made to Figures 1 to 11. The primary transport device 79 includes this Embodiment one on third rails 123 movable in the direction of a double arrow 125 Holding device 127 in which the empty drum 49 is held stationary and rotatable. The holding device 127 therefore leaves a rotational movement des Tambours 49 and prevents it from translational movement. By moving the holding device 127 the reel 49 can from the reel change position (not shown) along the straight first realized by the rails 123 Guideway 14 'shifted to the finished winding position in the Tambour 49 on the guide rails 15 rests. The drum 49 from a higher level (G2) to a lower level Level (G1) shifted or lowered. The third rails 123 are opposite one imagined, shown with a dashed line Horizontal H inclined at an angle z, that in the exemplary embodiment shown in FIG is in a range from 45 ° to 90 °. Due to the inclination of the rails 123 is the path of the reel 49 from the reel change position to below in the finished winding position similar to the walk one by means of a primary swivel lever opposite one another the machine frame fixed axis 83 pivoted Drums (Figure 9).

A second embodiment variant continues from FIG a control system for setting the line force in the winding gap between the Press drum and a drum or one Winding roll emerges, which differs from that based on the Figure 10 control described thereby distinguishes that the travel speed of the secondary transport device 5 depending on the Position of the piston 29 in the cylinder 27 of the pressing device 25 set or changed becomes. The regulator 73 can control the pressure in the cylinder 27 and thus the line force in the winding gap in Control / regulate dependency of several parameters. The Parameters are those measured with a measuring device 129 Longitudinal tension of the material web 3 (web tension), the diameter D of the winding roll 37 and an angle α, the position of one of the primary transport 79 guided drum shows. The Diameter D of the winding roller 37 and the angle α are calculated and / or determined -in Figure 12 exemplified control curve taken.

The angle α becomes the longitudinal axis between one the pressure drum 19 and the empty drum 49 intersecting plane 131 and the straight line G1 measured.

The control unit is connected via a signal line 133 61 transmits the position of the piston 29 in the cylinder 27, which drive the threaded spindle 47 Motor 45 of the lifting device 43 controls.

Figure 13 shows a further embodiment of the winding machine 1 according to the invention with a of the control described in FIGS. 5 and 10. Same Parts have the same reference number, so that in this respect to the description of the preceding Figures is referenced. The rails 22 on which the holding the pressure drum 19 rotatably Guide carriage 21 is displaceable in this embodiment compared to an imaginary Horizontal inclined by an angle β which here lies between 0 ° and 45 °. The pressure drum 19 is in a shift by means of the pressure device 25 in the direction of an arrow 135 from one lower level to a higher one Level raised, that means shifted diagonally upwards. As can be seen from Figure 13, the pressure drum 19 only with the winding roller 37, but not with the empty, arranged in reel change position Drum 49 in contact.

Also in the embodiment shown in Figure 13 the weight of the pressure drum 19 is still largely supported by the rails 22, so that a sufficiently precise control of the line force is easily possible in the winding nip. Just a small proportion of the weight of the pressure drum influences the measuring and / or the setting accuracy the line force, namely only the downhill drive component.

In another - not shown in the figures - Embodiment is provided that from the rails 22 and the guide carriage 21 formed linear guide for the pressure drum 19th is pivotable, for example with the help of at least a swivel lever.

Figures 14a to 14e each show a highly schematic Representation of part of the on the basis of previous Figures 1 to 11 and 13 described Winding machine 1 in different winding phases. In the following, only the differences in of how it works. At the in 14a to 14e illustrated embodiment the new Tambour 49 before changing the drum on the guide rails (not shown) 15 filed. To prepare a change of drum the pressure drum 19 against one Stop 117 ', which is positioned so that when introducing the new drum 49 into the Drum change position the pressure drum 19 from the stop 117 'is pushed back while the Drum 49 approaches the guide rails 15. The tackling the new Drum 49 is only taking place after placing the reel on the rails, causing fluctuations and / or jumps in the line force curve, like when you drop the reel on the guide rails during the winding process can occur can be safely avoided. Furthermore, the mechanical engineering effort can that described with reference to Figures 14a to 14e Winding machine compared to the other embodiments be simplified because, for example on a stable cross shaft to connect the primary swivel levers can be dispensed with.

Also in the case of the one described with reference to FIGS. 14a to 14e Embodiment of the winding machine can the winding roll 37 continuously along the second guideway, so without Intermediate stop. While the winding roll 37 in the figures 14a to 14d is led to the right at the same time the new drum 49 from the figure 14b shown in the position shown in Figure 14c Position - preferably continuously lowered. The speed of the movements of the Winding roll 37 and the new reel 49 in the in Figure 14a to 14e winding phases shown be constant or adhere to at least any one Change position.

From the description of Figures 1 to 14 results the procedure mentioned above is straightforward. It consists in that the material web over one horizontally, or at least essentially horizontally movable pressure drum is guided, the one with in a secondary conveyor a winding nip rotatably held forms. During this winding phase, the line force in the winding gap due to a shift of the pressure drum controlled / regulated. When you reach one desired winding roll diameter is in preparation changing the reel with the reel With the help of the secondary transport device from the pressure drum removed so that the material web is free runs from the pressure drum to the winding roll. On new drum rotating at web speed is carried out by means of a primary transport device brought a reel change position with the Press drum forms a new winding gap. Subsequently the web of material is across her Width separated and the new path start on the new reel wound. Even during this Winding phase is the control of the line force in the winding gap between the pressure drum and the new drum again by relocating the pressure drum. Finally takes over the secondary transport device the new drum with the new winding roll. The control / regulation the line force in the winding gap is also in this Wrapping phase, i.e. when the new drum from the secondary transport device is conducted exclusively by moving the pressure drum realized. The fact that during the entire The line force through a shift the pressure drum is set, a desired winding result can be realized. With the method described above can be a high one Security guaranteed when changing the reel be in the free web train in the reel change position retracted new drum already partially wrapped in the material web is before the drum change takes place.

It is clear from everything that the above described Embodiments of the winding machine, at which the primary drive only along the first Guideway is shiftable, the structure of it can be simplified by the primary drive on part of the primary conveyor is installed in a fixed position, which together with the Reel can be moved along the first guideway is. In a further variant of the Winding machine is provided that the primary drive both along the first guideway as also partially along the second guideway is relocatable. Furthermore, it goes without saying also possible that the secondary drive on the secondary transport device arranged stationary can be, thereby building the winding machine is further simplified.

In a particularly preferred - in the figures not shown - embodiment is the Stroke of the pressure drum, i.e. the maximum distance, which moved the pressure drum in one direction can be greater than or equal to the material layer thickness S a finished winding roll. hereby can be on a secondary transport device, which the reel during the finish winding process according to the diameter increase of the winding roll be relocated, waived. The winding roll will So in this embodiment in two fixed Winding stations wound. A "fixed" winding station " is characterized in that the drum is rotatably held so that both the Increase in diameter of the winding roll wound on it as well as adjusting the line force in the winding gap only by a shift the pressure drum is realized. A firm one Winding station has the advantage that it is a offers optimal rigidity of the drum clamping, so that a forwarding of possibly occurring Vibrations on the winding roller practical can be excluded. Because the relocation route the pressure drum is so large that the Diameter increase can be fully compensated constant drum tracking is not required, thereby building the winding machine can be simplified.

All embodiments of the winding machine is common that in preparation for a reel change a space / gap between the near finished winding roll and the pressure drum formed becomes. This can ensure that the Material web over before the reel change a circumferential area of the drum change position arranged empty drum is performed. Thereby can guarantee high functional reliability become.

It is also advantageous that the stationary, rotatable holding of the new drum Start of the winding process in the primary transport device, on an actuating device, as in known winding machines is often used, can be dispensed with. This actuator is used by the primary transport device guided drum radially in the direction of the pressure drum to shift the line force in the winding nip adjust. Because of this beneficial Design can be based on additional control waived for the actuator be so that the cost of the winding machine is reduced are.

All embodiments of the winding machine is common that the control of the line force in the winding nip according to the invention during entire winding process exclusively from one single device is executable, namely by a shift of the pressure drum with the help of Pressure device 25.

It is also particularly advantageous that existing, So already assembled winding machines converted can be one of those described above Method for winding the material web 3 can be implemented is.

The winding machine can be used as an alternative to the drum be equipped with a winding core on which one winding tube or several winding tubes attached are. In the latter case, the Winding machine upstream of a slitter his. This cuts the web into several Partial webs, each partial web on a winding sleeve is wound up.

Claims (29)

Winding machine for the continuous winding of a material web (3), in particular paper or cardboard web, on a reel to a winding roll, with a pressure drum (19) over which the material web (3) is guided and which forms a winding gap with the winding roll, with at least a primary transport device (79), by means of which the drum (35; 49) can be displaced along a first guideway, and with at least one secondary transport device (5; 7) that guides the drum (35,49) along a second guideway .
characterized in that, in preparation for a reel change, the new reel (35; 49) can be moved into a reel change position by means of the primary transport device (79), in which a new winding gap between the new reel (35, 49) and the pressure drum (19) is formed, and that while the reel (35, 49) is guided by the secondary transport device (5; 7), the diameter increase of the winding roll can be compensated for by a displacement of the secondary transport device (5; 7) and the line force in the winding gap by a Displacement of the pressure drum (19) are adjustable, preferably adjustable. Winding machine according to claim 1, characterized in that the reel change position is provided above the position in which the secondary transport device (5; 7) takes over the new reel (35; 49). Winding machine according to claim 1 or 2, characterized in that the new winding gap lies in a pressing plane (P) which is determined by the longitudinal axes of the empty reel (35; 49) and the pressing drum (19) and which is one around an imaginary horizontal (H) Angle α is inclined, which is in a range of 5 ° α α 40 40 °, preferably 10 α α 35 35 °, in particular 15 ° α α 30 30 °. Winding machine according to claim 1, characterized in that the reel change position is where the secondary transport device (5; 7) takes over the new reel. Winding machine according to one of the preceding claims, characterized in that the pressure drum (19) can be displaced by means of a pressure device (25), and that by moving the pressure drum (19) the diameter increase can be compensated and the line force in the winding gap can be controlled / regulated while the Winding roll is guided by the primary transport device (79). Winding machine according to one of the preceding claims, characterized in that the winding gap by a relative movement of the new drum (35; 49) with respect to the pressure drum (19) and / or by the relative movement of the pressure drum (19) with respect to the new drum (35; 49) is formed. Winding machine according to one of the preceding claims, characterized in that the pressure drum (19) is rotatably held on a guide carriage (21) and that the guide carriage (21) is movable on first rails (22) which are parallel to an imaginary horizontal line (H ) are arranged or are inclined relative to it by an angle β (FIG. 13). Winding machine according to one of claims 1 to 6, characterized in that the pressure drum (19) is rotatably held on pivoting levers which are pivotable about an axis running parallel to the longitudinal axis of the spool. Winding machine according to one of the preceding claims, characterized in that a drive, preferably a center drive (17), is assigned to the pressure drum (19). Winding machine according to one of the preceding claims, characterized in that the secondary transport device (5; 7) comprises a secondary slide (11) which can be moved on second rails (9), the rails (9) being arranged parallel to an imaginary horizontal line (H) or are inclined to the horizontal (H). Winding machine according to one of claims 1 to 9, characterized in that the secondary transport device (5; 7) comprises secondary pivot levers on which the drum is rotatably held and which are pivotable about an axis running parallel to the longitudinal axis of the drum. Winding machine according to one of the preceding claims, characterized in that the secondary transport device (5; 7) is assigned at least one secondary drive, preferably a center drive, for applying a driving and / or braking torque to the reel. Winding machine according to one of the preceding claims, characterized in that a lifting device (43) is assigned to the secondary transport device (5; 7), and that the lifting device (43) is preferably independent of that in the winding gap between the pressure drum (19) and the Line force acting on the winding roll can be controlled depending on the increasing winding roll diameter. Winding machine according to one of the preceding claims, characterized in that the pressure device (25) assigned to the pressure drum (19) for controlling / regulating the line force can be actuated independently of the lifting device (43) assigned to the secondary transport device (5; 7). Winding machine according to one of the preceding claims, characterized in that the pressing device (25) can be controlled by means of a regulating device (65) in such a way that the line force in the winding gap between the pressing drum (19) and the winding roll corresponds, at least essentially, to a desired value. Winding machine according to one of the preceding claims, characterized in that the position of the winding gap formed between the pressure drum (19) and the winding roller guided by the secondary transport device (5; 7) is constant. Winding machine according to one of claims 1 to 15, characterized in that the position of the winding gap formed between the pressure drum (19) and the winding roller guided by the secondary transport device (5; 7) increases with increasing winding roller diameter during the winding process, preferably by 50 mm up to 200 mm. Winding machine according to one of the preceding claims, characterized in that the pressing device (25) is designed as a — preferably hydraulic-piston and cylinder unit. Winding machine according to claim 18, characterized in that the maximum stroke of the piston (29) is less than half the material layer thickness of a finished winding roll. Winding machine according to one of the preceding claims, characterized in that the pressure drum (19) is designed in the manner of a deflection adjusting roller, the roller shell of which is supported on a stationary yoke by means of a series of supporting elements. Winding machine according to claim 20, characterized in that the support elements are individually controllable. Winding machine according to claim 20 or 21, characterized in that the support elements act in the direction of the winding gap. Winding machine according to one of the preceding claims, characterized in that the yoke can be pivoted in such a way that the direction of action of the support elements follows the traveling movement of the winding gap (from FIG. 3 to FIG. 4). Winding machine according to one of the preceding claims, characterized in that the primary transport device (79) comprises primary pivoting levers (81), on which the drum (35; 49) is rotatably held and which extends around an axis (parallel to the longitudinal axis of the drum) ( 83) are pivotable. Winding machine according to claim 24, characterized in that the axis (83) of the primary pivoting lever (81) is arranged stationary within the winding machine (21). Winding machine according to one of the preceding claims, characterized in that the primary transport device (79) comprises a holding device which can be moved on third rails. Winding machine according to claim 26, characterized in that the third rails are arranged vertically or are inclined at an angle z with respect to an imaginary vertical. Winding machine according to one of the preceding claims, characterized by at least one pressure element (pressure roller (51)) which can be pressed onto the circumference of the winding roller. Winding machine according to one of the preceding claims, characterized in that the angle α (FIG. 3) can be adjusted, preferably before a reel change.

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