EP2205512B1 - Method and device for winding a material web - Google Patents

Abstract

The invention relates to a method for winding a material web (12), particularly a paper, cardboard, or tissue web, on a reel (14), wherein the material web (12) is fed to the reel (14) by means of a drum (16), and a winding gap (20) is formed between the drum (16) and the reel (14) or the winding (18) to be formed thereon, and a line force is generated therein. The direction of action of the line force generated in the winding gap (20) is held at least substantially constant during the entire winding buildup.

Description

The invention relates to a method for winding a material web, in particular paper, cardboard or tissue web, on a spool, wherein the web fed to the spool via a carrier drum and between the carrier drum and the spool or the winding to be formed thereon a winding nip and in this a line force is generated.

Furthermore, the invention relates to a winding device suitable for carrying out this method according to the preamble of claim 3.

• Durch Lageveränderungen des Tambours während des Wickelverlaufs entstehen Linienkraftabweichungen quer zur Maschine (Maschinenquerrichtung; CD), das heißt quer zur Bahnlaufrichtung, und über den Wickeldurchmesser. Die Hauptursachen dafür sind eine unterschiedliche Tambourdurchbiegung, Reibeinflüsse, eine variierende Linienkraftrichtung bei konstanter Anpressrichtung und variierende Eigengewichtseinflüsse.
• Die Übergabe von einem Anpresssystem bzw. der Primäranpressung zu einem zweiten Anpresssystem bzw. der Sekundäranpressung verursacht Linienkraftspitzen.
• Die Übergabe von einem ersten Zentrumsantrieb bzw. Primär-Zentrumsantrieb zu einem zweiten Zentrumsantrieb bzw. Sekundär-Zentrumsantrieb kann sich negativ auf den Drehmomentverlauf und damit auf den Wickelaufbau auswirken.

The previously known methods and winding devices or rollers of the type mentioned have a number of features that have a detrimental effect on the winding structure in pressure-sensitive papers, such as tissue in particular:

• Changes in the position of the spool during the course of the winding result in line force deviations transverse to the machine (cross machine direction, CD), ie transversely to the direction of web travel, and over the winding diameter. The main causes of this are a different Tambourdurchbiegung, Reibeinflüsse, a varying line force direction at constant contact pressure and varying self-weight influences.
• The transfer of a pressing system or the primary pressing to a second pressing system or the secondary pressing causes line force peaks.
• The transfer from a first center drive or primary center drive to a second center drive or secondary center drive can have a negative effect on the torque curve and thus on the winding structure.

Thus, in the previously known roller concepts in the primary winding, the line force generated in the winding nip is influenced by the drum weight, which leads to a displacement of the primary layers, a corresponding loss of volume and a correspondingly higher rejects. In addition, due to the Tambourdurchbiegung line force deviations in the transverse direction. If the drum weight is compensated, for example, by a force attack on the edge in the primary winding, the tambour bend line results in a higher line force in the machine center. In the secondary winding, a reverse effect occurs. In the transfer of force from the primary to the secondary winding, a line force peak occurs, through which the primary layers can be pushed, which in turn leads to a corresponding loss of volume and a higher rejection. In addition, in the area of pressure cylinders and pivot points as well as by the rolling resistance on the running rail, frictional influences can occur that cause linear force errors. This results in undefined line forces, and there is a risk of crushing and volume loss. In addition, often the drum is driven by the carrier drum. Such a peripheral drive requires a minimum line force, so that it can come again to corresponding volume losses here.

At one of the EP 1 460 010 A2 known winding device of the type mentioned are provided for driving the drum electric motors that can be coupled without gear directly to the drum or a rotary drive connection associated therewith. In this case, the spool can be coupled in a primary winding phase with a first and in a secondary winding phase with a second motor. Furthermore, a force transfer from the primary pressing to the secondary pressing is required, which results in a line force peak in the winding gap can bring, which can again lead to a displacement of the primary layers, a corresponding loss of volume and a correspondingly higher rejects.

At one of the WO 03/053827 A1 known winding device, the line force peak occurring during the transition from the primary winding phase into the secondary winding phase is counteracted, inter alia, by the fact that the carrier drum is mounted axially inside and independently of the primary arms and a corresponding fault diagnosis is carried out on the basis of the measured line forces.

It is also already known a winding device with two center drives, in which a respective drum during the entire winding structure can be pressed on only one of the two Anpresseinheiten to the carrier drum and on the other pressing the first Tambour is pressed against the Anpresstrommel. In this case, however, a respective tambour is guided over its bearing on horizontal rails, which are arranged above the upper edge of the carrier drum. The disadvantage here is that the effective direction of the line force changes with the winding diameter, which is very unfavorable, especially in the Anwickelphase. In addition, the rolling resistance of the reel bearings on the rails and the friction in the hydraulic cylinders provided for pressing the reel on the reel cylinder cause relatively large and undefined line forces with a gain of about three times. A respective new or empty bambour can only be inserted if the full tambour already has a correspondingly large diameter. In an earlier change, the wound drum must be guided away from the carrier drum, which means that a free winding is required or the web must be re-listed. The real reason for a center drive is to wind the web with as little line force as possible to maintain the volume. Due to the unfavorable effective direction of the line force, the advantage of the center drive is mostly nullified in the present case. Apart from the extremely unfavorable contact conditions in the Anwickelphase gives way the line force direction thus strongly on the load direction. The component acting as a line force is thus difficult to control.

At one of the WO 93/06033 A known winding apparatus of the type mentioned above, the empty drum initially held by primary arms in a first position above the suspension drum mounted on a carrier and brought in this first position via a prime mover to the peripheral speed of the carrier drum. Then we lowered the empty spool through the primary arms in a second position, brought to form the winding nip with the carrier drum in contact and driven by this carrier drum. While the drum still occupies this second position and is driven by the carrier drum, the paper web is already transferred to the carrier drum. Following this Anwickelphase the already wound drum is then lowered over the primary arms further on horizontal rails and passed to this adjacent linearly movable secondary system over which the supported on the rails spool is horizontally displaceable at further increasing winding.

At another, from the WO 94/26641 A known winding device of the type mentioned, the spool is horizontally movable during the entire winding process. WO 94/26641 A discloses a device or a method according to the preamble of Anpruchs 3 or claim 1. The carrier drum is generally vertically movable. For winding the carrier drum assumes an initial position obliquely above the carrier drum, resulting in a counter to the web running direction relative to the vertical inclined first effective direction of the line force generated in the winding nip. After the winding formed on the spool has reached a certain diameter, the spool is displaced from the initial position to a second position, in which results in a direction of web travel relative to the vertical inclined second effective direction of the line force generated in the winding nip. With increasing diameter of the resulting on the spool winding of the spool is shifted horizontally. About the generally vertically movable carrier drum, the amount of line force is adjustable.

At one in the DE 44 01 804 A1 described winding apparatus in which the winding quality is determined exclusively by a corresponding control of the drum drive and dispensed with the generation of a line force in the winding nip, an empty drum is lowered into a horizontally movable carriage pair and brought by means of a belt drive to the same peripheral speed as a carrier drum. Subsequently, provided with a gear center drive is engaged, pivoted the belt drive and easily applied to the drum to form a winding nip on the carriage pair to the carrier drum. Then the carrier drum is fed to the paper web, whereby the winding process begins. During the entire winding process, the winding quality is determined exclusively by a corresponding control of the center drive, without the resulting winding is pressed against the carrier drum. On the generation of a line force in the winding nip is therefore omitted. Hissing the winding and the carrying drum should at most still create a low pressing force serving to avoid air inclusions.

The invention has for its object to provide an improved method and an improved device of the type mentioned, in which the aforementioned disadvantages are eliminated.

With regard to the method, this object is achieved in that the effective direction of the line force generated in the winding nip is maintained at least substantially constant throughout the winding structure. Preferably, the spool and thus the winding to be formed thereon are pressed against the carrier drum during the entire winding structure via one and the same pressing unit. It is particularly advantageous if the spool is driven during the entire winding structure on one and the same center drive system.

Such a winding method, which is wound with a constant line force direction and only one Anpresssystem and only one center drive per winding roller, is particularly suitable for winding tissue paper. It is especially ensured that the position of the main cylinder, that is in particular the vertical position relative to the carrier drum, remains constant over the entire winding process and no reversal of the drum bending line occurs and self-weight effects are excluded on the line force. Correspondingly, the line force is kept constant across the machine (cross machine direction, CD) and over the winding diameter. Since the entire winding structure takes place with only one Anpresssystem, there is no power transfer. Since the entire winding structure is done with only one center drive system or center drive, also eliminates the usual torque transfer.

Preferably, the spool is guided so that the two mutually parallel axes of the spool and the carrier drum during the entire winding structure remain in one and the same plane, advantageously in a horizontal plane.

With regard to the winding device, the object is achieved in that the spool and thus the winding to be formed so pressed against the carrier drum and the spool is guided so that the effective direction of the line force generated in the winding nip is maintained at least substantially constant throughout the winding structure , In this case, the spool and thus the winding to be formed thereon can be pressed against the carrier drum preferably via one and the same pressing unit during the entire winding structure. It is particularly advantageous if the spool can be driven by one and the same center drive system during the entire winding structure.

The spool is advantageously guided so that the two mutually parallel axes of the spool and the carrier drum during the entire winding structure remain in one and the same plane, preferably in a horizontal plane.

Due to this design, it is particularly ensured that the material web can be wound with the lowest possible and uniform contact force over the entire winding process and with the least possible web tension. This winding device is thus particularly suitable for pressure-sensitive papers such as tissue in particular. In this case, it is also ensured in particular that the tissue volume generated by complicated processes such as creping, TAD (through-air drying) or the ATMOS drying technology remains largely intact. The entire winding structure is carried out with only one Anpresssystem. There is no power transfer required during the winding process. The position of the spool relative to the carrier drum remains constant over the entire winding process. There is no reversal of the Tambour bending line and thus no change in the line force distribution in the transverse direction. In addition, the entire winding structure is center-driven, so that the line force level is no longer determined by the peripheral drive. The tambour can be used in supports on linear guides be guided, whereby the frictional resistance is reduced to a minimum and an extremely sensitive line force control is enabled.

According to an expedient practical embodiment, the winding device comprises two movable pressing units, via which the spool and thus the winding to be formed on each winding drum is pressed and each associated with a center drive, which includes a rotor provided with an electric motor, coaxial with the spool in Assignment to an axial end portion of the spool is positionable and can be coupled by moving the center drive in the axial direction of the spool and / or by a relative movement between a rotary drive connection of the center drive and its rotor without gear directly to the spool or a rotary drive connection associated therewith, wherein a respective spool during the entire winding structure only one of the two Anpresseinheiten to the carrier drum is pressed and on the other pressing unit only the next drum is pressed against the carrier drum, a respective drum wä During the entire winding structure is guided along a line extending through the support drum axis and perpendicular to this linear path and the pressing unit in question during the entire winding structure to be moved in parallel, the spool during the entire winding structure by the respective Anpresseinheit associated center drive can be driven.

The spool can be guided in particular horizontally, in which case the two Anpresseinheiten are each moved horizontally.

Preferably, the two pressing units each comprise two contact slides, one of which is arranged on the driver's side and the other on the drive side. In this case, the center drive in question is assigned to one of the two contact carriages. The Anfahrschlitten can be performed on preferably horizontal guide rails. Appropriately, they are guided by means of linear roller guides on the guide rails.

According to an expedient practical embodiment, a driver-side and a drive-side staging are provided, wherein one of the two Anpressschlitten a respective Anpresseinheit on the inside of one of the two chairs and the other of the two Anpressschlitten on the outside of the other chair is guided in each case on guide rails and the center drive in question associated with the outer contact carriage.

It is also particularly advantageous if a guide carriage which can be moved perpendicular to the direction of travel of the contact carriage and perpendicular to the spool axis is provided for centering the respective drum carrier in a respective contact carriage, wherein the guide carriage can in particular be vertically movable.

In this case, the guide carriage is preferably mounted on the contact carriage via a linear roller guide.

The guide carriage can be moved via at least one actuating element, in particular at least one hydraulic cylinder / piston arrangement.

The Anpressschlittenpaar a respective Anpresseinheit may be associated with a carriage drive, which acts via drive elements on the Anpressschlitten, preferably arranged on the driver's side or drive side carriage drive via a first on the same side as the carriage drive arranged drive element on the provided on this side contact carriage and over a transverse source and a drive element arranged on the other side acts on the drive carriage provided on the other side.

Appropriately, in this case, the carriage drive of one of the two Anpressschlittenpaare or Anpresseinheiten on the driver's side and the carriage drive of the other Anpressschlittenpaares or Anpresseinheit arranged on the drive side.

The drive elements may include drive chains, for example. In this case, each drive chain is preferably assigned its own chain tensioner.

However, the drive elements may, for example, also comprise toothed belts or the like.

It is also conceivable, for example, such an embodiment, in which the contact slide can be driven via at least one spindle drive with transverse shaft.

According to a further advantageous embodiment variant of the device according to the invention, the pressing carriages are each assigned a single drive, wherein the contact carriages can be driven, for example, via a toothed rack or the like.

Preferably, the winding device comprises a particular electronic control and / or regulating device.

Advantageously, an angle encoder connected to the control and / or regulating device is assigned to control and / or regulate the drive carriage movements and / or to position the drive carriages in each carriage drive. In particular, the respective angular position and the respective rotational speed of the rotor of the relevant drive can be detected by means of such an angle encoder.

It is also advantageous if a respective center drive is displaceably guided on the respective contact carriage or the guide carriage associated therewith, in particular via a linear roller guide in the transverse direction.

The carrier drum is preferably mounted on connected to the control and / or regulating device measuring cells, via which the force is measurable, with the Tambour or the winding to be formed on the winding drum is pressed. The measured values obtained can then be used in particular for controlling and / or regulating the line forces occurring in the winding nip.

Conveniently, a movable lift arms comprehensive Tambourlift is provided for the transfer of a respective new drum from a arranged on the winding device reel magazine to the correspondingly positioned guide carriage of a respective Anpressschlittenpaares or Anpresseinheit.

The Tambourlift can be assigned a Tambourstarter to accelerate a respective new Tambour before handing over to the respective Anpresseinheit or their guide carriage.

It is also advantageous if the driver-side and the drive-side staging are provided in an outlet region with rails inclined relative to the horizontal, to which the finished and in particular braked winding can be placed in order to supply it to a stop device.

Preferably, the control and / or regulation of the winding structure is at least partially on the force with which the spool or the winding to be formed thereon is pressed against the carrier drum.

Preferably, the control and / or regulation of the winding structure can at least partially take place over the path traveled by the spool or by the winding to be formed thereon.

According to a preferred practical embodiment of the device according to the invention, the control and / or regulation of the winding structure takes place via the path covered by the spool or by the winding to be formed thereon only from a prescribable winding diameter. Before that, the control or regulation z. B. via the contact force.

In certain cases, it may be advantageous if the guide carriage provided only for guiding the spool and the spool during the winding structure is supported by rails.

The method according to the invention and the winding device according to the invention can be used with particular advantage in particular for winding tissue webs.

Center drives in the secondary area of the paper machine reel are so far unilaterally realized on the drive side in the normal case. The drive unit has so far been mostly performed on a separate subset on linear guides. In order to ensure an alignment of the drive train with the drive coupling of the main cylinder, the drive unit in the previously known drive systems is usually mechanically coupled to the secondary arm or secondary carriage by a driver.

These known drive concepts have a number of disadvantages. Thus, the mass of the drive unit, which can be between about 1,200 - 6,700 kg, depending on the machine width and drive power, must be moved during a movement of the secondary arm or carriage. This brings in particular when accelerating or decelerating considerable forces with it, which act on the drive side secondary arm or carriage and thus influence the line force between the drum and carrier drum in the secondary winding on one side. For very sensitive products such as soft tissue papers Line forces <1kN / m required not to destroy the volume. However, these requirements can not be realized with the conventional type paper machine roller concepts in which the line force in the secondary winding is generated by the secondary arm. It is here a separate management of the drive unit may be required with its own subset. In addition, there is a relatively large amount of space.

The aforesaid drawbacks will be realized with a preferred embodiment of the winding apparatus according to the invention in which the drive system comprises at least one center drive having a rotor-mounted electric motor coaxial with the drum in association with an axial end portion of the drum and by center-drive operation in the axial direction of the main cylinder and / or by a relative movement between a rotary drive connection of the center drive and the rotor without gear directly to the spool or a rotary drive connection associated therewith can be coupled. This also minimizes the mass of the respective drives. The space requirement for the drives is reduced to a minimum.

According to a preferred embodiment of the winding device according to the invention, the center drive is combined with a contact slide, via which the spool or the winding to be formed on the winding roller can be pressed, wherein the center drive and the contact slide are guided together.

The center drive can in particular be combined with a secondary carriage assigned to a secondary winding area. In principle, a center drive is also conceivable which is combined with a secondary carriage assigned to a primary winding area.

The rotary drive connection associated with the spool can, for example, comprise a drive coupling or bell.

The rotary drive connection of the center drive comprises, for example, a drive star.

The rotor of the center drive, for example, comprise a hollow motor shaft. In this case, the center drive can be coupled for example by a relative movement between the drive star and the hollow motor shaft with the spool or the associated rotary drive connection. As already mentioned, however, it is also possible in principle to engage the drive star by correspondingly moving the entire center drive into the rotary drive connection assigned to the drum and / or to disengage it again.

In certain cases, it may be advantageous if a center drive is provided both on the driver's side and on the drive side.

Thus, for example, a symmetrical introduction of force via the two-sided arrangement of the drives is also possible. However, there are also conceivable embodiments in which the two arranged on different sides center drives have a different engine characteristics. In the latter case, for example, such an embodiment is conceivable in which one of the two Center drives a relatively smaller torque at relatively higher speeds for a predetermined lower winding diameter range and the other center drive generates a relatively larger torque at relatively lower speeds for a predetermined upper winding diameter range.

According to an expedient practical embodiment of the winding device according to the invention, at least one center drive is assigned to a secondary winding area.

Alternatively or additionally, at least one center drive can also be assigned to a primary winding area.

According to an expedient practical embodiment, at least one center drive is assigned to each of a primary winding area and a secondary winding area.

The invention will be explained in more detail below with reference to exemplary embodiments with reference to the drawing.

Figur 1

eine schematische Seitenansicht einer beispielhaften Ausführungsform der erfindungsgemäßen Wickelvorrichtung;

Figur 2

eine schematische Draufsicht der Wickelvorrichtung gemäß Figur 1;

Figur 3

eine schematische Vorderansicht der Wickelvorrichtung gemäß Figur 1; und

Figur 4

eine schematische Teildarstellung einer beispielhaften Ausführungs-form des Antriebssystems der Wickelvorrichtung.

Show it:

FIG. 1

a schematic side view of an exemplary embodiment of the winding device according to the invention;

FIG. 2

a schematic plan view of the winding device according to FIG. 1 ;

FIG. 3

a schematic front view of the winding device according to FIG. 1 ; and

FIG. 4

a schematic partial view of an exemplary embodiment of the drive system of the winding device.

FIG. 1 shows a schematic side view of an exemplary embodiment of an apparatus 10 for winding a material web 12 on a spool 14, in which the material web 12 to the spool 14 via a carrier drum 16 can be fed and between the carrier drum 16 and the spool 14 and the winding to be formed thereon 18, a winding nip 20 is formed.

In this case, the spool 14 and thus the winding 18 formed thereon can be pressed against the carrier drum 16 and the spool 14 is guided so that the effective direction of the line force generated in the winding gap 20 is kept at least substantially constant throughout the winding structure. The spool 14 and thus the winding to be formed thereon are expediently pressed against the carrier drum 16 via one and the same pressing unit during the entire winding structure. Preferably, the spool 14 is driven during the entire winding structure via one and the same center drive system. In this case, the spool 14 is guided in particular so that the two mutually parallel axes of the spool 14 and the carrier drum 16 during the entire winding structure remain in one and the same plane, preferably in a horizontal plane.

For this purpose, the winding device 10, two movable Anpresseinheiten 22, 22 '; 24, 24 ', via which the spool 14 and thus the winding 18 to be formed thereon, can each be pressed against the carrier drum 16.

The two pressing units 22, 22 '; 24, 24 'may each have a center drive 26; 28 (see also the Figures 2 and 3 ) associated with a rotor provided with an electric motor.

As in particular the Figures 2 and 3 can be taken, in which the winding device 10 is shown in a schematic plan view and a schematic front view, the center drives 26; 28 each coaxial with the spool 14 in association with an axial end portion of the spool 14 positionable and by moving the center drive 26; 28 in the axial direction of the main cylinder 14 and / or by a relative movement between a rotary drive connection 30 of the center drive 26; 28 and its rotor without gear directly to the spool 14 or its associated rotary drive terminal 32 can be coupled.

In this case, a respective spool 14 during the entire winding structure only one of the two Anpresseinheiten 22, 22 '; 24, 24 'are pressed against the carrier drum 16. The next drum 14 is then pressed against the carrier drum 16 again via the respective other pressing unit.

A respective drum 14 is guided during the entire winding structure along a linear axis running through the support drum axis and perpendicular to this, while the pressing unit 22, 22 'or 24, 24' is movable parallel to it during the entire winding structure. The drum 14 can be driven during the entire winding structure by the respective drive unit 22, 22 'or 24, 24' associated center drive 26 and 28 respectively.

In the present embodiment, the spool 14 is guided horizontally, and the two Anpresseinheiten 22, 22 '; 24, 24 'are each horizontally movable.

The two pressing units can each comprise two contact slides 22, 22 'or 24, 24', one of which is arranged on the driver's side and the other on the drive side. In this case, the relevant center drive 26 or 28 one of the two contact carriages 22, 22 '; 24, 24 'assigned.

The contact carriages 22, 22 '; 24, 24 'may be guided on preferably horizontal guide rails 34. In this case, these contact rollers are guided, for example by means of linear roller guides 36 on the guide rails 34.

The winding device 10 comprises a driver-side and a drive-side frame 38. In this case, one of the two contact slides 22 '; 24 'of a respective pressing unit on the inside of one of the two stalls 38 and the other pressure slide 22; 24 on the outside of the other chair 38 each guided on guide rails 34. The relevant center drive 26 or 28 is assigned to the outer contact slides 22, 24 respectively.

In a respective contact carriage 22, 22 '; 24, 24 'may be a perpendicular to the direction of travel of the pressure carriage and perpendicular to the spool axis movable guide carriage 40, 40'; 42, 42 'be provided for centering recording of the relevant Tambourlagers 44. In the present embodiment, the guide carriage is vertically movable. In this case, the guide carriage can in particular be mounted on the contact carriage via a linear roller guide 46.

The guide carriage 40, 40 '; 42, 42 'may in particular via at least one actuating element such as in particular at least one hydraulic cylinder or hydraulic cylinder / piston assembly 48, 48'; 50, 50 'be moved.

The Anpressschlittenpaar 22, 22 '; 24, 24 'of a respective pressing unit, a carriage drive 52; Be assigned 54, via drive elements 56, 56 '; 58, 58 'on the Anpressschlitten 22, 22', 24, 24 'acts.

The arranged on the driver's side or drive side slide drive 52; 54 of a respective Anpressschlittenpaares can via a first on the same side as the carriage drive 52; 54 arranged drive element 56; 58 on the provided on this page Anpressschlitten 22; 24 and via a transverse shaft 60; 62 and a drive element 56 'arranged on the other side; 58 'on the provided on the other side Anpressschlitten 22'; 24 'act.

The winding device 10 may in particular be designed so that the carriage drive 52; 54 one of the two Anfahrschlittenpaare 22, 22 '; 24, 24 'or Drive units on the driver's side and the carriage drive 52; 54 of the other Anpressschlittenpaares or Anpresseinheit is arranged on the drive side.

In the present embodiment, the drive elements comprise drive chains 56, 56 '; 58, 58 '. Each drive chain can have its own chain tensioner 64, 64 '; Be assigned 66, 66 '. In principle, however, other drive elements such as toothed belts may be provided.

The contact carriages 22, 22 '; 24, 24 'can be driven, for example, via at least one spindle gear with transverse shaft.

The contact carriages 22, 22 '; 24, 24 'can also be assigned in each case a single drive. In particular, in this case, the Anpressschlitten example, each be driven via a rack.

The winding device 10 may include a particular electronic control and / or regulating device (not shown).

For controlling and / or regulating the drive carriage movements and / or for positioning the drive carriages, each carriage drive 52; 54 an angle encoder 68 connected in particular to the control and / or regulating device; 70 assigned.

In the present embodiment, a respective center drive 26; 28 on the respective contact carriage 22; 24 or the associated guide carriage 40; 42 guided in particular displaceably via a linear roller guide 72 in the transverse direction.

The carrier drum 16 can be mounted on measuring cells 74 that can be connected in particular to the control and / or regulating device, by means of which the force with which the drum 14 or the winding 18 to be formed thereon is pressed against the carrier drum 16 can be measured.

For transferring a respective new spool 14 from a spool magazine (not shown) arranged above the winding device 10 to the correspondingly positioned guide carriages 40, 40 '; 42, 42 'of a respective Anfahrschlittenpaares 22, 22'; 24, 24 ', a movable lift arms 76 comprehensive Tambourlift 78 may be provided.

The drum lift 78 may be associated with a drum starter to a respective new drum 14 before the transfer to the respective pressing unit 22, 22 '; 24, 24 'or their guide carriage 40, 40', 42, 42 'to accelerate.

In an outlet region 80 of the winding device 10, the driver-side and the drive-side frame 38 may be provided with rails 82 inclined relative to the horizontal, to which the finished and in particular braked winding 18 can be placed in order to feed it to a stop device 84.

The control and / or regulation of the winding structure can also take place at least partially via the force with which the spool 14 or the winding 18 to be formed thereon is pressed against the carrying drum 16. However, it is also conceivable that the control and / or regulation of the winding structure takes place at least partially over the path traveled by the spool 14 or by the winding 18 to be formed thereon. In addition, such an embodiment is conceivable, for example, in which the control and / or regulation of the winding structure takes place via the path covered by the spool 14 or by the winding to be formed thereon only from a prescribable winding diameter.

For example, such an embodiment of the winding device 10 is also conceivable, in which the guide carriages 40, 40 '; 42, 42 'are provided only for guiding the spool 14 and the spool 14 is supported during the winding structure by rails. In this case, for example, the rails 82 can be guided horizontally at least substantially into the region of the carrier drum 16.

• Es sind eine führerseitige und eine triebseitige Stuhlung 38 vorgesehen, wobei jeweils auf der Innen- und Außenseite die Anpressschlitten 22, 22'; 24, 24' auf horizontal angeordneten Führungsschienen 34 mittels Linearrollenführungen 36 geführt sind. In den Anpressschlitten sind vertikal verschiebbare Führungsschlitten 40, 40'; 42, 42' auf Linearrollenführungen 46 gelagert. Diese Führungsschlitten werden mittels Hydraulikzylindern oder hydraulischen Zylinder/Kolben-Anordnungen 48, 48'; 50, 50' bewegt. Die Führungsschlitten sind so gestaltet, dass sie einen Tambour 14 am Tambourlager 44 zentriert aufnehmen und tragen können.

The winding device 10 can thus be designed, for example, as follows:

• There are provided a driver-side and a drive-side frame 38, wherein on the inside and outside of the Anpressschlitten 22, 22 '; 24, 24 'are guided on horizontally arranged guide rails 34 by means of linear roller guides 36. In the Anpressschlitten vertically displaceable guide carriage 40, 40 '; 42, 42 'mounted on linear roller guides 46. These guide carriages are by means of hydraulic cylinders or hydraulic cylinder / piston assemblies 48, 48 '; 50, 50 'moves. The guide carriages are designed to accommodate and support a spool 14 centered on the barrel bearing 44.

It forms in each case an outer contact slide 22; 24 with the opposed inner pressure slide 22 '; 24 'a functional or Anpresseinheit. Each functional unit formed by a respective pair of carriages has a carriage drive 52; 54, via drive chains 56, 56 '; 58, 58 'acts on the drive carriage, wherein in each case a transverse shaft 60; 62 ensures the synchronization of the carriage of a respective pair of carriages. Each chain is equipped with its own chain tensioner 64, 64 '; 66, 66 'equipped.

For controlling and / or regulating the drive carriage movements and for exact positioning, each carriage drive is provided with an angle encoder 68; 70 assigned. Each carriage pair has a center drive 26; 28, which may be provided in particular in the manner of a "Voith Drive" center drive and is guided on the respective outer drive slide in the transverse direction displaceable on linear roller guides 72.

The carrier drum 16, via which the material web 12 is fed to the winding process, is mounted on measuring cells 74. A Tambourlift 78 with movable lift arms 76 takes over the reels from a arranged on the winding device reel magazine (not shown) and leads them to the appropriately positioned guide carriage. In an outlet region 80 of the winding device 10 is the Stung with inclined rails 82 provided on the finished wound coil 18 is placed after braking and the stopper 84 is supplied.

The functional sequence of such an exemplary embodiment of the winding device 10 can in particular be as follows: The drum lift 78 lifts with the lift arms 76 a new spool 14 from the spool magazine and lowers it into the raised guide carriages 40, 40 'of the positioned pair of thrust carriages 22, 22'. The tambour still has no contact with the carrier drum 16.

The center drive 26 is engaged by sliding in the transverse direction in the provided for example in the form of a drive bell rotary drive connection of the spool, and the spool is then accelerated to machine speed.

The driven by the slide drive 52 Anpressschlittenpaar now moves the drum to the carrier drum and presses him with a defined, preferably regulated force. The actual force value is determined by the measuring cell or measuring cells 74 under the carrier drum 16 and fed into the control.

The material web 12 is now fed to the carrier drum by cut in the upstream machine section a transfer strip on the edge of the web and is guided with appropriate transfer devices on the carrier drum through the press or winding nip between the carrier drum and drum. Thereafter, the strip is widened to the total web.

The running on the carrier drum material web is then transferred by means of a turn-up or Aufführsystems on the spool. The turn-up or the feeding of the web can be done by moistening the spool or by applying an adhesive tape or spray adhesive on the spool. Alternatively or additionally, the web can also be separated and listed by a web-wide Trennblasrohr under the spool.

After the turn-up, the entire winding process takes place up to the full winding 18, for example, with controlled contact force and defined center torque (controlled speed).

After reaching a certain winding diameter, the Anpressschlittenpaar 24, 24 'with lowered guide slide 42, 42' under the active drum through in the direction of the carrier drum in the Tamboureinlegeposition be moved. Once there, the guide carriages are lifted into the working position by means of the hydraulic cylinders or hydraulic cylinder / piston assemblies 50, 50 'in which they are ready to receive the next spool.

If the winding 18 has reached the desired diameter, it is driven away from the carrier drum by a predeterminable amount and continues to be wound there at the center. During this time, a new spool, which is already in waiting position on the carrier drum in the Tambourlift, inserted into the waiting guide slide pair 42, 42 ', accelerated with the center drive 28 to machine speed and applied to the carrier drum, as already in connection with the previous drum was described. In this process, the web slides for a short time on the not yet rotating drum (bowing).

The transfer of the material web to the new drum (turn-up) is carried out as described above.

The finished winding is now braked by the center drive 26, lowered by lowering the guide carriage 40, 40 'on the rails 82 and released. The winding now runs on the Tambourlagern on the inclined rails 82 to the stopper 84th

If the Tambourlift is equipped with a Tambourstarter to the tambour before insertion into the guide slide on machine speed To accelerate, so shortening the free winding time for the full role, and the train does not have to slide over the not yet rotating drum.

As already mentioned, alternative drives of the contact carriages may include, for example, toothed belts instead of drive chains, spindle drives with transverse shaft and / or a system with rack and single drive on each carriage (electronic synchronization).

In certain cases, it may also be advantageous to perform the winding structure not force-controlled, but path-controlled, for example with a defined carriage path per number of winding or material web layers.

It is also conceivable, for example, such a variant, in which the path control takes place only from a certain winding diameter.

For example, the guide carriages can only serve to guide the drums, in which case they do not carry their weight. The tambourines are instead carried by rails, which then extend to the carrier drum. This brings with it the advantage of a largely symmetrical loading of the drum bearings. In the case of a line force control, however, due to the rolling friction on the rails, the sensitivity of the control can be influenced. In a path-controlled winding structure, this does not matter.

The center drives can also be realized as conventional drives mounted independently of the drive carriages.

In order to avoid as far as possible the drawbacks of free winding known to a person skilled in the art, particularly in the case of low grammages, a pressing element 90, in particular a pressure roller, is provided in the present embodiment, which is applied to the winding 18 to reduce the air inlet between the material web layers and to stabilize the full winding 18.

FIG. 4 shows a schematic partial representation of an exemplary embodiment of a system 86 for driving a spool 14 in a winding device, in which a material web, in particular paper, board or tissue web is wound on the spool 14, the web is the spool 14 fed via a carrier drum and between the carrier drum and the spool 14 and the winding to be formed thereon, a winding nip is formed.

The drive system 26 comprises at least one center drive 26; 28, which has a rotor provided with an electric motor, coaxial with the drum 14 in association with an axial end portion of the main cylinder 14 is positionable and by moving the center drive in the axial direction of the main cylinder 14 and / or by a relative movement between a rotary drive connection of the center drive 26; 28 and the rotor without gear directly to the spool 14 or a rotary drive connection 32 associated therewith can be coupled.

The center drive 26; 28 can with a contact carriage 22, 22 '; 24, 24 'combined, over which the spool 14 and the winding to be formed thereon can be pressed against the support roller. In this case, the center drive 26; 28 and the pressing carriage 22, 22 '; 24, 24 'be shared.

The center drive 26; 28 may be combined with a secondary carriage associated with a secondary winding area or with a primary carriage associated with a primary winding area.

The rotary drive connection associated with the spool 14 may comprise a drive coupling or bell. The rotary drive terminal 30 of the center drive 26; 28 may in particular comprise a drive train.

The rotor of the center drive comprises, for example, a hollow motor shaft. In this case, the center drive 26; For example, be coupled by a relative movement between the drive train and the hollow shaft motor with the spool 14 and the associated rotary drive terminal 32.

For example, it is also possible to provide a center drive both on the driver's side and on the drive side.

The two arranged on different sides center drives can have a different engine characteristics. Thus, one of the two center drives, for example, a relatively smaller torque at relatively higher speeds for a predetermined lower winding diameter range and the other center drive generate a relatively larger torque at relatively lower speeds for a predetermined upper winding diameter range.

At least one center drive 26 is preferred; 28 associated with a secondary winding area. For example, at least one center drive may also be associated with a primary winding area. In this case, for example, such an embodiment is conceivable in which both a primary winding area and a secondary winding area are each assigned at least one center drive.

The center drives 26; 28 can thus each be again provided in the manner of a "Voith Drive" center drive.

In the FIG. 4 are also again a chair 38 and linear roller guides 72 to recognize, via which a respective center drive 26; 28 is movable in the transverse direction to allow engagement or disengagement of, for example, a drive train comprehensive rotary drive connection. This can be assigned to the center drive rotary drive connection 30th For example, in a drive coupling or bell comprehensive rotary drive terminal 32 of the main cylinder 14 are engaged.

As based on the FIG. 4 can be seen, the center drive 26; 28 may be arranged on a motor slide 88, which is correspondingly movable in the transverse direction via the slide or linear roller guide 72.

It is thus provided a center drive with low mass and small footprint. In this case, for example, those variants are conceivable in which results by a two-sided arrangement of the drives a symmetrical force application. In addition, variants with different engine characteristics on the leading side and the drive side are conceivable.

The drive system 36 can be used with particular advantage, in particular also in the winding device 10 according to the invention.

The center drives of the winding device according to the invention and the drive system according to the invention are, as already stated, preferably designed as "Voith Drive" center drives.

Reference number list

10

winder

12

web

14

drummer

16

carrying drum

18

reel

20

winding gap

22

Anpressschlitten

22 '

Anpressschlitten

24

Anpressschlitten

24 '

Anpressschlitten

26

center drive

28

center drive

30

Rotary drive connection

32

Rotary drive connection

34

guide rail

36

Linear roller guide

38

framing

40

guide carriage

40 '

guide carriage

42

guide carriage

42 '

guide carriage

44

Tambour bearings

46

Linear roller guide

48

Hydraulic cylinder / piston arrangement

48 '

Hydraulic cylinder / piston arrangement

50

Hydraulic cylinder / piston arrangement

50 '

Hydraulic cylinder / piston arrangement

52

carriage drive

54

carriage drive

56

Drive element, drive chain

56 '

Drive element, drive chain

58

Drive element, drive chain

58 '

Drive element, drive chain

60

cross shaft

62

cross shaft

64

chain tensioner

64 '

chain tensioner

66

chain tensioner

66 '

chain tensioner

68

encoders

70

encoders

72

Linear roller guide

74

cell

76

Liftarm

78

Tambour lift

80

discharge area

82

runner

84

stopping means

86

drive system

88

snowmobiles

90

pressing element; capstan

Claims (15)

1. Method for winding a material web (12), in particular a paper, board or tissue web, onto a spool (14), in which the material web (12) is fed to the spool (14) over a carrier drum (16) and a winding nip (20) is formed between the carrier drum (16) and the spool (14) or the reel (18) to be formed thereon, and a line force is produced in the said winding nip (20),
   characterized in that
   the active direction of the line force produced in the winding nip (20) is kept at least substantially constant during the entire build-up of the reel.
2. Method according to Claim 1,
   characterized by at least one of the following features:

   the spool (14) and therefore the reel (18) to be formed thereon is pressed against the carrier drum (16) via one and the same pressing unit (22, 22'; 24, 24') during the entire build-up of the reel;

   the spool (14) is driven via one and the same centre drive system (26; 28) during the entire build-up of the reel;

   the spool (14) is guided in such a way that the two mutually parallel axes of the spool (14) and of the carrier drum (16) remain in one and the same plane during the entire build-up of the reel, the spool (14) preferably being guided in such a way that the two mutually parallel axes of the spool (14) and of the carrier drum (16) remain in a horizontal plane during the entire build-up of the reel.
3. Device (10) for winding a material web (12), in particular a paper, board or tissue web, onto a spool (14), in which the material web (12) can be fed to the spool (14) over a carrier drum (16) and a winding nip (20) is formed between the carrier drum (16) and the spool (14) or the reel (18) to be formed thereon, in order to produce a line force in the said winding nip (20), in particular for carrying out the method according to one of the preceding claims,
   characterized in that
   the spool (14) and therefore the reel (18) to be formed thereon can be pressed against the carrier drum (16) and the spool (14) is guided in such a way that the active direction of the line force produced in the winding nip (20) is kept at least substantially constant during the entire build-up of the reel.
4. Device (10) according to Claim 3,
   characterized by at least one of the following features:

   the spool (14) and therefore the reel (18) to be formed thereon can be pressed against the carrier drum (16) via one and the same pressing unit (22, 22'; 24, 24') during the entire build-up of the reel;

   the spool (14) can be driven via one and the same centre drive system (26; 28) during the entire build-up of the reel;

   the spool (14) is guided in such a way that the two mutually parallel axes of the spool (14) and of the carrier drum (16) remain in one and the same plane during the entire build-up of the reel, the spool (14) preferably being guided in such a way that the two mutually parallel axes of the spool (14) and of the carrier drum (16) remain in a horizontal plane during the entire build-up of the reel.
5. Device (10) according to one of the preceding Claims 3 or 4,
   characterized in that
   it has at least one centre drive (26; 28) which comprises an electric motor provided with a rotor, can be positioned coaxially with respect to the spool (14) in assignment to an axial end region of the spool (14) and, by moving the centre drive in the axial direction of the spool (14) and/or by means of a relative movement between a rotary drive connection (30) of the centre drive (26; 28) and the rotor thereof, can be coupled directly to the spool (14) or a rotary drive connection (32) assigned to the latter, without any gearbox.
6. Device (10) according to Claim 5,
   characterized in that
   it comprises two movable pressing units (22, 22'; 24, 24'), via which the spool (14) and therefore the reel (18) to be formed thereon can in each case be pressed against the carrier drum (16) and to which in each case there is assigned a centre drive (26; 28) which comprises an electric motor provided with a rotor, can be positioned coaxially with respect to the spool (14) in assignment to an axial end region of the spool (14) and, by moving the centre drive (26; 28) in the axial direction of the spool (14) and/or by means of a relative movement between a rotary drive connection (30) of the centre drive (26; 28) and the rotor thereof, can be coupled directly to the spool (14) or a rotary drive connection (32) assigned to the latter, without any gearbox, it being possible for a respective spool (14) to be pressed against the carrier drum (16) only via one of the two pressing units (22, 22'; 24, 24') during the entire build-up of the reel and only the next spool (14) being pressed against the carrier drum (16) again via the respective other pressing unit, a respective spool (14) being guided along a linear path running through the carrier drum axis and perpendicular to the latter during the entire build-up of the reel, and it being possible for the relevant pressing unit (22, 22' or 24, 24') to be moved parallel thereto during the entire build-up of the reel, it being possible for the spool (14) to be driven by the centre drive (26 or 28) assigned to the relevant pressing unit (22, 22' or 24, 24') during the entire build-up of the reel.
7. Device (10) according to one of the preceding Claims 3 to 6,
   characterized by at least one of the following features:

   the spool (14) is guided horizontally and both pressing units (22, 22'; 24, 24') can in each case be moved horizontally;

   the two pressing units in each case comprise two pressing carriages (22, 22'; 24, 24'), of which one is arranged on the operator's side and the other on the drive side, and the relevant centre drive (26 or 28) is assigned to one of the two pressing carriages (22; 24), the pressing carriages (22, 22'; 24, 24') preferably being guided on preferably horizontal guide rails (34) and the pressing carriages (22, 22'; 24, 24') preferably being guided on the guide rails (34) by means of linear roller guides (36);

   an operator's-side and a drive-side frame (38) are provided, one of the two pressing carriages (22'; 24') of a respective pressing unit being guided on the inner side of one of the two frames (38), and the other pressing carriage (22; 24) being guided on the outer side of the other frame on a respective guide rail (34), and the relevant centre drive (26 or 28) being assigned to the outer pressing carriage (22; 24).
8. Device (10) according to one of the preceding Claims 3 to 7,
   characterized by at least one of the following features:

   provided in a respective pressing carriage (22, 22'; 24, 24') is a guide carriage (40, 40'; 42, 42') that can be moved at right angles to the direction of movement of the pressing carriage and at right angles to the spool axis for the centring accommodation of the relevant spool bearing (44), the guide carriage preferably being mounted on the pressing carriage such that it can be moved vertically and/or via a linear roller guide (46) and/or can be moved via at least one actuating element such as in particular at least one hydraulic cylinder/piston arrangement (48, 48'; 50, 50');

   the pair of pressing carriages (22, 22'; 24, 24') of a respective pressing unit is assigned a carriage drive (52; 54), which acts on the pressing carriages (22, 22'; 24, 24') via drive elements (56, 56'; 58, 58'), the carriage drive (52; 54) arranged on the operator's side or drive side preferably acting on the pressing carriage (22; 24) provided on this side via a first drive element (56; 58) arranged on the same side as the carriage drive (52; 54), and acting on the pressing carriage (22'; 24') provided on the other side via a cross-shaft (60; 62) and a drive element (56'; 58') arranged on the other side.
9. Device (10) according to Claim 8,
   characterized by at least one of the following features:

   the carriage drive (52; 54) of one of the two pairs of pressing carriages (22, 22'; 24, 24') or pressing units is arranged on the operator's side, and the carriage drive (52; 54) of the other pair of pressing carriages or pressing unit is arranged on the drive side;

   the drive elements comprise drive chains (56, 56'; 58, 58'), each drive chain (56, 56'; 58, 58') preferably being assigned an individual chain tensioner (64, 64'; 66, 66'), or the drive elements comprising toothed belts.
10. Device (10) according to one of the preceding Claims 3 to 9,
    characterized by at least one of the following features:

    the pressing carriages (22, 22'; 24, 24') can be driven via at least one spindle mechanism with cross-shaft;

    the pressing carriages (22, 22'; 24, 24') are each assigned an individual drive, it preferably being possible for the pressing carriages (22, 22'; 24, 24') to be driven via a rack in each case.
11. Device (10) according to one of the preceding Claims 3 to 10,
    characterized by at least one of the following features:

    the device (10) comprises an in particular electronic control and/or regulating device, each carriage drive (52; 54) preferably being assigned an angle encoder (68; 70) connected to the control and/or regulating device for controlling and/or

    regulating the drive carriage movements and/or for positioning the drive carriages (22, 22'; 24, 24');

    a respective centre drive (26; 28) is guided such that it can be displaced in the transverse direction on the relevant pressing carriage (22; 24) or the guide carriage (40; 42) assigned to the latter, in particular via a linear roller guide (72);

    the carrier drum (16) is mounted on measuring cells (74) connected to the control and/or regulating device, via which it is possible to measure the force with which the spool (14) and the reel to be formed thereon is pressed against the carrier drum (16);

    in order to transfer a respective new spool (14) from a spool magazine arranged above the winding device (10) to the appropriately positioned guide carriages (40, 40'; 42, 42') of a respective pair of pressing carriages (22, 22'; 24, 24') or pressing unit, a spool lift (78) comprising movable lifting arms (76) is provided, a spool starter preferably being assigned to the spool lift (78) in order to accelerate a respective new spool (14) even before the transfer to the respective pressing unit (22, 22'; 24, 24') or the guide carriage (40, 40'; 42, 42') of the latter.
12. Device (10) according to one of the preceding Claims 3 to 11,
    characterized by at least one of the following features:

    in a run-out region (80), the operator's-side and the drive-side frame (38) are provided with running rails (82) which are inclined with respect to the horizontal, onto which the finished and in particular braked reel (18) can be placed in order to feed the latter to a stopping apparatus (84);

    the control and/or regulation of the build-up of the reel is carried out at least partly via the force with which the spool (14) and the reel (18) to be formed thereon is pressed against the carrier drum (16), and/or at least partly via the distance covered by the spool (14) and the reel (18) to be formed thereon, the control and/or regulation of the build-up of the reel via the distance covered by the spool (14) and the reel (18) to be formed thereon preferably being carried out only starting from a pre-definable reel diameter;

    the guide carriages (40, 40'; 42, 42') are provided only to guide the spool (14), and the spool (14) is carried by running rails during the build-up of the reel.
13. Device (10) according to one of the preceding Claims 5 to 12,
    characterized by at least one of the following features:

    the centre drive (26; 28) is combined with a pressing carriage (22, 22'; 24, 24'), via which the spool (14) and the reel to be formed thereon can be pressed against the carrier roll, the centre drive and the pressing carriage being guided jointly, the centre drive (26; 28) preferably being combined with a secondary carriage assigned to a secondary winding region or with a primary carriage assigned to a primary winding region;

    the rotary drive connection (32) assigned to the spool (14) comprises a drive coupling or bell;

    the rotary drive connection (30) of the centre drive (26; 28) comprises a drive spider.
14. Device (10) according to one of Claims 5 to 13,
    characterized by at least one of the following features:

    the rotor comprises a hollow motor shaft;

    the centre drive (26; 28) can be coupled to the spool or the rotary drive connection assigned to the latter by means of a relative movement between the drive spider and the hollow motor shaft;

    in each case a centre drive is provided both on the operator's side and on the drive side, the two centre drives arranged on different sides preferably having different motor characteristics and in this case one of the two centre drives preferably generating a relatively smaller torque at relatively higher rotational speeds for a pre-definable lower reel diameter range, and the other centre drive generating a relatively higher torque at relatively lower rotational speeds for a pre-definable upper reel diameter range.
15. Device (10) according to one of Claims 5 to 14,
    characterized by at least one of the following features:

    at least one centre drive (26; 28) is assigned to a secondary winding region;

    at least one centre drive is assigned to a primary winding region;

    in each case at least one centre drive is assigned both to a primary winding region and to a secondary winding region.

Images