EP1790599B1 - Machine or machine section with at least one electric motor for direct driving a core of a winding reel, in particular for application in the paper industry - Google Patents

Description

According to a first aspect, the invention relates to a machine or a machine section for preferably continuous winding of a material web, in particular of paper or cardboard, onto a winding core formed in particular by a spool into a winding roller and / or for preferably continuous unwinding of the material web from such a winding roller. according to the preamble of claim 1.

Such a device is off US 5,622,328 known. Regarding the aspect of unwinding will be supplementary US 4,804,898 pointed.

In general, relevant machines, machine sections and electric motor-based drive assemblies suitable for this purpose are known in a variety of configurations. Regarding winding machines for winding or unwinding a material web is, for example, on the DE 197 35 590 A1 . DE 198 22 261 A1 . DE 40 07 329 A1 . DE 197 45 005 A1 and EP 0 826 615 A1 directed. Special reference is made to the Sirius roll-up system from Voith Paper. There are also various other Aufroll- and Abrollanordnungen known in the art, to which the invention is applicable in principle.

The object of the invention is a machine or a machine section of the specified type to provide, which meets the requirements occurring in practice particularly well, especially in terms of compactness of the rotary drive and cost-effectiveness by avoiding mechanical drive elements such as gearboxes, clutches and drive shafts between the electric motor on the one hand and component to be driven on the other.

To achieve this object, the invention provides the device with the features of claim 1.

According to the invention, a direct drive of the component to be driven (winding core or wound roll having this, generally rotational component) in the sense of a so-called "center drive" is provided, being dispensed with intermediate mechanical drive elements such as gearboxes, clutches and propeller shafts, so that on the one hand a very compact , The electric motor-containing drive unit for rotary drive can be realized and on the other hand, the not inconsiderable costs for intermediate mechanical drive elements are avoided. An important consideration is in In this context, the feature of backlash-free joint rotation as a result of the omission of the mentioned mechanical drive elements, which - if technically reasonable - targeted predetermined or from a certain operating situation resulting rotational positions are approached.

Compared to an asynchronous motor, a synchronous motor has the advantage that the speed can be optimized more easily, and that the omission of the slip compensation required for an asynchronous motor improves the dynamic control behavior of the motor. It is achieved a higher accuracy than conventional asynchronous motors. In particular, comparatively large torques are possible at low speeds. This is especially true when the motor is designed with permanent magnets. In this connection, it is thought above all of permanent magnets produced on the basis of at least one rare-earth material, for example neodymium-iron-drilling. Particularly ideal are so-called "torque motors", which operate on the principle of a synchronous motor. Torquemotors usually consist of a stator and a rotor with permanently excited magnets. Due to the comparatively high energy density (permanent magnets) such motors can be particularly compact build or deliver very strong torques over a wide speed range. Such motors are therefore particularly suitable for use in the invention.

Preferably, the rotor is designed annular and arranged radially inside the stator. The electric motor can, as already mentioned in connection with the third aspect of the invention, be designed particularly expedient as plug-on motor or hollow shaft motor. In this connection, it is specifically proposed that the electric motor in the manner of a hollow shaft motor is plugged or plugged directly onto a shaft journal serving as a rotary drive connection, wherein the electric motor plugged onto the shaft journal with its rotor is in positive rotational drive connection with the shaft journal.

Depending on the design of the machine or the machine section, it may be particularly expedient that the shaft journal is designed as a hollow shaft, for example, for supplying an operating fluid, possibly process steam, into an interior of the rotary component or for discharging a fluid (possibly process steam or condensate ) from the interior. Such a configuration is of particular interest in connection with drying cylinders of a dryer section.

As already mentioned, the electric motor of the synchronous motor type designated as "torque motor" or "permanent magnet motor" is preferred. Such motors have proven themselves, for example, for driving machine tools, in particular for direct drive without mechanical transmission elements, such as clutches and gears. Due to their compactness and positioning accuracy, they are used, for example, for use in swivel axes and rotary tables. Due to their high dynamics, they are successfully used in dynamic machine tools and for high-speed lathes of lathes. In particular, torque motors or permanent magnet motors with integrated air or water cooling are also available, for example from Siemens Linear Motor Systems and ABB. With regard to the electric motor to be used according to the invention in the machine or the machine section, it is especially thought that it has integrated fluid cooling, preferably liquid cooling, most preferably water cooling. The stator of the electric motor preferably has integrated fluid cooling, preferably liquid cooling, most preferably water cooling.

A particularly preferred embodiment is characterized by a closed-loop cooling fluid circuit (in particular cooling water circuit) assigned to the electric motor. The cooling fluid circuit, in particular the cooling water circuit, can advantageously be designed with a cooling fluid storage arrangement (in particular a cooling water storage arrangement) and / or with a heat exchange arrangement or / and with a filter arrangement. It is also possible to provide a heating arrangement which permits preheating of the cooling fluid, in particular cooling water, in particular for starting operations. The cooling fluid can therefore be preheated before the actual start of operation to bring the electric motor to a minimum operating temperature, and then serve to cool the electric motor. The cooling water circuit can be filled with conventional components (feed pump, Metering devices, particle dirt filter, flow monitor, temperature monitor, orifice plate, stopcock, etc.). Preferred is a common cooling water circuit for several electric motors.

The use of a closed circuit compared to about a cooling water supply from the public network or from a surface water supply has the advantage that consistent cooling conditions (especially constant inlet temperature) and consistent cooling medium quality (cleanliness, freedom from interference particles, etc.) can be guaranteed.

It is preferable to assign a plurality of electric motors to a common cooling fluid supply, in particular cooling water supply. This proposal also relates to electric motors, which are each assigned to a different rotary component or another hub or assigned. In this case, it is preferred in terms of the training proposal already mentioned that the electric motors can be supplied with cooling fluid, in particular cooling water, via a common, closed cooling fluid circuit, in particular cooling water circuit.

To avoid condensation, especially in special operating situations, a thermal encapsulation (insulation) of the motor can be provided. The housing or / and the encapsulation may be made of a non-rusting material (eg stainless steel, aluminum die-cast). As insulation, various plastic materials come into consideration, such as polyurethane, which is particularly advantageous because of its low thermal conductivity and thus its low requirement of volume and light weight. The insulating layer can be particularly expedient directly on and around the motor housing or foamed. As a result, an effective noise reduction of the engine is achieved as an advantageous side effect.

A preferred embodiment is characterized in that the electric motors are each arranged in a separate one of a plurality of cooling fluid branches connected in parallel to one another and having a common inlet and a common outlet. For this purpose, it is further proposed that at least one of the cooling fluid branches can be individually shut off and / or individually controlled with respect to the cooling fluid flow or controllable and / or at least one size of interest, such as fluid temperature and / or cooling fluid flow, and / or that at least one of the cooling fluid branches with a own filter arrangement is executed. It can then set and ensure optimally adapted cooling conditions for each electric motor individually to the respective operating situation.

As far as condensate accumulates in or in the region of the (respective) electric motor, it can be advantageously provided that the condensate can be discharged together with the cooling fluid fed to the electric motor, for example by feeding into the cooling fluid circuit or cooling fluid branch.

The electric motor may advantageously be displaceable along its engine mount along a motor guideway. Such a design and Application of the electric motor is particularly facilitated by the relative compactness of the synchronous motor provided according to the invention. For example, the electric motor can be arranged on a pivoting lever or carriage, wherein either an active drive for displacement of the electric motor is provided or this is shifted by mediating a correspondingly moving rotary component or a correspondingly displaced winding core or winding roll.

It is especially thought that the addressed winding core or the winding roll along a winding guideway is displaced, and that the motor guideway and the winding guideway at least partially correspond to each other for a common displacement of the winding core or the winding roll and the Winding core operatively associated electric motor.

The motor guideway may be linear at least in some areas. This can be realized particularly appropriate using a carriage for the engine. The motor guideway may further extend arcuately at least partially. This can be realized particularly expedient also by means of a carriage or by means of a pivot lever.

At least one electric motor, which according to the invention is designed as a synchronous motor, can be arranged on the drive side of the machine or of the machine section. At least one electric motor, the According to the invention is designed as a synchronous motor can be arranged on the leader side of the machine or the machine section.

It can be provided that two motors provided on different sides (driver side and drive side) of the machine or of the machine section jointly rotate a rotary component or a winding core.

According to claim 1 such an embodiment that the winding core in a first phase of operation, a first electric motor is operatively assigned, so that the rotor or the rotary drive connection of the same is substantially free of play directly coupled to the winding core or the rotary drive connection of the same that the winding core in a second electric motor is operationally assigned to, so that its rotor or the rotary drive connection thereof is substantially free of play directly coupled to the winding core or the Drehantriebsanschluss thereof, and that in a transition phase of the rotor or its rotary drive connection of the first electric motor from the winding core decoupled and the rotor or its rotary drive connection of the second electric motor with the winding core can be coupled, preferably such that at least in a partial phase of the transition phase, both electric motors are coupled to the winding core. The two electric motors are preferably arranged on different sides of the machine or of the machine section.

According to a preferred development, the first electric motor with its motor mount is displaceable along a first motor guideway and the second electric motor with its motor mount can be displaced along a second motor guideway. The first motor guideway is preferably arcuate and the second motor guideway is preferably linear.

For a winding machine with a primary drive and a secondary drive, it is particularly expedient if the first and the second electric motor are controllable in relation to each other, preferably controllable, that the rotary drive connection of the first electric motor and the rotary drive connection of the second electric motor a predetermined defined relative rotational position or a of several predetermined defined relative rotational positions relative to each other. It can then be ensured that a simple transfer of the rotary drive from the primary winder to the secondary winder is possible by ensuring that the rotary drive connection of the winding core and the rotary drive connection of the rotor of the second motor take up a problem-free engagement enabling relative rotational position to each other, if necessary is maintained at least in phases during the rotation.

A particularly preferred embodiment of the machine or of the machine section is characterized in that the rotary drive connection of the rotor, on the one hand, and the rotary drive connection of the respective winding core, on the other hand, form a couplable and disengageable positive coupling, in particular a splined tooth coupling. This refinement proposal makes possible an advantageous coupling or decoupling of, for example, a spool to an electric motor or of a respective electric motor.

In this context, it is proposed as particularly expedient that one of the form-locking coupling forming rotary drive terminals comprises a rotatably mounted on a shaft portion and axially displaceable coupling sleeve having on an inner circumference and / or outer circumference entrainment formations with counter-entrainment formations on a coupling sleeve counter portion of other rotary drive connection with essentially play-free form-fit driving engagement can be brought.

Furthermore, it can be advantageously provided that a relative rotational position between entrainment formations of one rotary drive connection and counter-driving formations of the other rotary drive connection can be detected prior to engaging the form-locking coupling on the basis of at least one associated rotary encoder and that the electric motor for engagement by electrical control in the sense of a control and / or and control defined in a one-engaging relative rotational position between driving formations and counter-driving formations corresponding rotational position is adjustable. Also by this configuration can always short Einkuppelzeiten, ensures reliable engagement and increased wear in the field of positive coupling are avoided.

Advantageously, one can provide a (respective) electric motor associated braking device, preferably comprising at least one arranged on a motor output shaft brake disc. The engine output shaft forms the addressed rotary drive connection of the rotor or has this.

Fig. 1

zeigt eine zum Drehantrieb von Tambouren dienende, einen Synchronmotor aufweisende Antriebseinheit 10 in einer Wickelstation oder Wickelmaschine zum Aufwickeln einer Materialbahn, insbesondere Papier oder Karton, auf einen jeweiligen Tambour.

Fig. 2

zeigt einen geschlossenen Kühlwasserkreislauf für mehrere, jeweils einen Synchronmotor aufweisende Antriebseinheiten.

Fig. 3

zeigt ein Ausführungsbeispiel einererfindungsgemäßen Wickelmaschine, die einen Primärwickler, einen Sekundärwickler und eine angetriebene Anpress- oder Tragtrommel oder Anpress- oder Tragwalze aufweist und von der Sirius-Wickelmaschine von Voith Paper ausgeht.

Fig. 4

zeigt schematisch eine Seitendarstellung einer im Wesentlichen der Konstruktion der Fig. 3 entsprechenden Wickelmaschine.

The invention will be explained in more detail below with reference to the embodiments shown in the figures.

Fig. 1

shows a serving for the rotary drive of Tambouren, a synchronous motor having drive unit 10 in a winding station or winding machine for winding a web, in particular paper or cardboard, on a respective spool.

Fig. 2

shows a closed cooling water circuit for several, each having a synchronous motor having drive units.

Fig. 3

shows an embodiment of a winding machine according to the invention, which has a primary winder, a secondary winder and a driven pressing or carrying drum or pressing or support roller and emanating from the Sirius winding machine from Voith Paper.

Fig. 4

schematically shows a side view of a substantially the construction of Fig. 3 corresponding winding machine.

Conventionally, the winding and unwinding of paper webs usually takes place by means of standard asynchronous electric motors. The power transmission to arranged in the winding station tambour take over mechanical drive elements such as propeller shafts, transmissions and clutches. These drive elements and the not very compact motors require comparatively much space, so that accordingly larger buildings are required, or in a given building the installable machine capacity is limited accordingly. Furthermore, results in a comparatively complex structural design of the winding machine, resulting in large masses to be moved and a comparatively complex electrical control. Furthermore, the investment cost due to expensive components and the mentioned space requirements is comparatively large.

• Eine konstante Zugleistung über einen großen Wickelbereich erfordert einen sehr großen Motor.
• Es resultieren ein großes Gewicht, ein großer Platzbedarf und es müssen große Massen bewegt werden.
• Die Maschinenkonstruktion muss besonders steif ausgeführt werden mit entsprechenden Kosten und entsprechendem Bauraumbedarf.
• Herkömmliche Motoren werden üblicherweise durch weiteren Bauraum einnehmende Anbaulüfter gekühlt (Fremdkühlung).
• Durch Getriebeeinbau ist zwar auf Grundlage einer Drehzahlanhebung eine Reduzierung der Motorgröße möglich, das Getriebe ist aber kostenaufwändig und führt in der Regel Drehspiel ein. Überdies ist der Bauraumgewinn wegen des Platzbedarfs für das Getriebe begrenzt.
• Große Motoren führen zu einer großen Geräuschentwicklung.
• Es resultiert ein hohes Trägheitsmoment des Antriebs.

Significant disadvantages of the prior art are the following in brief:

• A constant pulling power over a large winding area requires a very large engine.
• It results in a large weight, a large space requirement and it must be moved large masses.
• The machine construction must be carried out particularly stiff with corresponding costs and corresponding space requirements.
• Conventional motors are usually cooled by additional space-consuming attachment fan cooled (external cooling).
• Although gear reduction makes it possible to reduce the size of the engine on the basis of a speed increase, the gearbox is costly and generally introduces a rotational play. Moreover, the space gain is limited because of the space required for the transmission.
• Large engines lead to a large noise.
• This results in a high moment of inertia of the drive.

In contrast, a drive designed as a synchronous motor or operable electric motor, in particular a so-called "torque motor" with permanently excited, a high energy density resulting magnet used as the center drive, eliminating all mechanical drive elements such as gearboxes, clutches and universal joints except one on - And uncoupling of a respective drum (generally winding core) to the electric motor enabling clutch, in particular positive coupling, is used for rotary drive.

The drive unit 10 of Fig. 1 is accordingly carried out with a so-called torque motor or permanent magnet synchronous motor, according to Fig. 1 is arranged in a cuboid motor lantern 12, which is arranged on a frame 14 of the winding station fixed or along a guideway movable (such as the intermediary of a sliding carriage). From the motor lantern 12, the motor output shaft 15 is shown, on which a motor output hub 16 is attached via an expansion screw 17. On the motor output hub 16 sits a sliding sleeve 18 which is held by a splined or splined on the outer circumference of the output hub and in the inner circumference of the sliding sleeve on the output hub substantially rotationally fixed and thus is coupled to the output shaft 15 substantially rotatably. The inscribable as a sliding or coupling hub sliding sleeve 18 is provided with a Gearing 20 (external teeth) on its outer periphery with an associated counter-toothing 22 (internal teeth) in an inner circumference of a coupling end 24 (often referred to as "Tambourglocke") of a respective spool 108 in substantially play-free Drehitnahemeingriff brought to the respective spool for winding or Unwinding a web of material for common rotation rotatably drive.

To disengage and engage the form-locking coupling formed by the sliding sleeve 18 and the respective coupling end 24 and the Tambourglocke a respective spool the sliding sleeve is displaceable by means of a pneumatically operated cylinder-piston device 26 relative to the output hub 16 in the Keilnutenanordnung, via a two-armed lever (engagement lever) 28 and an effective between the lever and the sliding sleeve pivot bearing 30th

The motor output hub 16 also carries a brake disc 32, which allows braking of the rotation of the synchronous motor or its output shaft 16 and thus possibly the spool or the winding roll by means of a brake caliper braking device 34. The braking device may advantageously be pneumatically actuated.

In general, it will be useful if the torque motor or generally the synchronous motor according to the invention, a speed sensor 36 is associated.

Preferably, an active cooling of the drive unit 10, especially the torque motor or permanent magnet synchronous motor contained therein (generally synchronous motor) is provided, preferably a water cooling, is actively supplied to the cooling water and discharged again. This is in Fig. 1 symbolized by the arrows 38.

Often it will be useful to provide for a defined discharge of condensate, as in Fig. 1 symbolized by the arrow 40. In this context, it is particularly useful when the condensate is supplied to the effluent cooling water.

Depending on the design of the engine, this can be provided with a permanent lubrication supply and / or have a relubrication device. A connector for supplying lubricant is in Fig. 1 designated 42 and is used in particular for intermittent lubrication of the splines of the motor output hub 16 and the sliding hub 18. Preferred is a high-temperature grease lubrication, since depending on the operating situation quite comparatively high operating temperatures can occur.

In the drive unit 10, a rotary encoder can be integrated, which allows an accurate detection of a current rotational position. Furthermore, such a rotary encoder can be assigned to a respective drum or a device can be provided which determines an angular position of the internal toothing 22 or sets a defined angular position of this internal toothing (absolute or relative to the external toothing 20). This opens up the possibility of the relative rotational angle of the two coupling halves of the form-locking coupling, so the angular position of the outer teeth 20 relative to the internal teeth 22 in the decoupled state match each other such that a safe engagement is guaranteed, such that axial end surfaces of the preferably as "Zahnverzahnungen "running gears do not collide. A control unit controlling the relative rotational positioning is in Fig. 1 designated 44.

A torque motor or permanent magnet synchronous motor works on the principle of a synchronous motor and has a stator with windings and a rotor with permanently excited magnets. Regarding the permanently excited magnets, rare-earth magnets are advantageously used. Torque motors or permanent magnet synchronous motors are characterized by very high precision and high dynamics, high torques at low speeds and a low moment of inertia. They are particularly well suited for the direct drive of rotating components, are characterized by a compact, robust design, are therefore also suitable for problematic or spatially limited installation situations, relatively maintenance-free, wear-free, quiet and in itself essentially free of play. In contrast to asynchronous motors, no inherent slip occurs. Torque motors or permanent magnet synchronous motors are available with integrated air or water cooling. In particular, by a water cooling a very effective heat dissipation is possible, whereby such motors are especially suitable for high ambient temperatures. In addition, water-cooled engines have a smaller size with the same power, so they are more compact.

• Geringes Trägheitsmoment;
• vergleichsweise konstantes Moment über den gesamten Drehzahlbereich;
• hohe Dynamik;
• hohe Wiederholgenauigkeit;
• eine Geräuschkapselung ist auf Grund der Kompaktheit und integrierter Kühlung einfach möglich,
• die integrierte Kühlung ermöglicht den Verzicht auf eine gesonderte, zu störenden Geräuschemissionen führenden Lüftereinheit;
• Torquemotoren bzw. Permanentmagnet-Synchronmotoren sind in den verschiedensten Auslegungen problemlos verfügbar;
• definierte Drehwinkel lassen sich mit hoher Genauigkeit anfahren;
• keine inhärenten Elastizitäten;
• vergleichsweise große Überlastfähigkeit.

Other, partly already mentioned advantages and properties of torque motors or permanent magnet synchronous motors are the following:

• Low moment of inertia;
• comparatively constant torque over the entire speed range;
• high dynamics;
• high repeat accuracy;
• noise isolation is easily possible due to the compactness and integrated cooling,
• the integrated cooling makes it possible to dispense with a separate fan unit leading to disturbing noise emissions;
• Torquemotors or permanent magnet synchronous motors are readily available in various designs;
• defined rotation angles can be approached with high accuracy;
• no inherent elasticities;
• comparatively high overload capacity.

The cooling of the synchronous motor, preferably torque motor or permanent magnet synchronous motor takes place, as already mentioned, preferably on the basis of cooling water. It is specifically proposed for this purpose to provide a closed cooling water circuit, which can serve very useful for the cooling water supply of multiple synchronous motors. The synchronous motors to be supplied with cooling water by means of a cooling water circuit may be the synchronous motor of a primary winder according to the invention and a synchronous motor of a secondary winder of a winding machine according to the invention. If several winding machines are present, their synchronous motors according to the invention can be appropriately supplied with cooling water across machines by a common cooling water circuit (generally cooling fluid circuit). It is quite possible, used in various contexts synchronous motors, namely synchronous motors of a winding machine on the one hand and Synchronous motors, for example, a drying section on the other hand to supply by means of a common circuit with cooling medium.

Fig. 2 1 schematically shows one of a plurality of synchronous motors 11a, 11b, 11c and 11d according to the invention, in particular a plurality of permanent magnet synchronous motors or torque motors 11a, 11b, 11c and 11d, associated, closed cooling water circuit 50. The circuit has a plurality of cooling water branches 52a, 52b, 52c and 52d, which are supplied to each other in parallel via a common inlet 54 by a cooling water sucking from a reservoir 56 pump 58 with cooling water and open into a common outlet 60, which leads via a heat exchanger assembly 62 into the reservoir 56. The cooling water branches are each designed with shut-off valves, which are designated 64, 66 and 68 in the case of the cooling water branch 52a. Furthermore, the cooling water branches are each provided with a dirt filter (dirt filter 70 in the case of the cooling water branch 52a) and a flow monitor (flow switch 72 in the case of the cooling water branch 52a) and with a manually or preferably by means of a remotely controllable actuator adjustable aperture (aperture 74 in the case of the cooling water branch 52a ) and an input side temperature sensor (temperature sensor 76 in the case of the cooling water branch 52a) and an output side temperature sensor (temperature sensor 78 in the case of the cooling water branch 52a) with respect to the respective engine.

In addition to the dirt filters provided in the individual cooling water branches, a dirt filter arrangement can also be arranged in the common inlet 54, preferably on the input side in the pump 58.

The cooling water circuit 50 is preferably made of corrosion-free components, in particular stainless steel components (in particular Stainless steel piping), manufactured so that it can be dispensed with corrosion inhibitors in the coolant.

As indicated in relation to the electric motor 11a, preferably a condensate discharge from the engine or from the region of the engine takes place into the cooling water flowing out from the engine and thus into the reservoir 56. A corresponding condensate discharge line is designated 80 and can be provided with suitable valves and the like.

The dashed representation of the cooling water branch 52d is intended to express that this cooling water branch can certainly represent several other cooling water branches. Like the far right in Fig. 2 indicated, the cooling water circuit may still have a parallel to the cooling water branches bypass branch 82 which is designed with a symbolized by a check valve pressure relief valve 84. This valve opens only when a preset maximum pressure is exceeded to avoid damage due to overpressure.

Fig. 3 shows an example of a winding machine 100 according to the invention with synchronous motors, namely permanent magnet synchronous motors or torque motors, for direct drive of Tambouren having a primary winder 102 and a secondary winder 104. The two winders each have a, the synchronous motor according to the invention having drive unit 10a and 10b, for example, according to the drive unit 10 of Fig. 1 on, in Fig. 3 not all details of this drive unit can be seen. In any case, the cuboid motor lanterns 12a and 12b can be seen. According to Fig. 3 the motor lantern 12b is arranged on a carriage 105b which, after transfer of the winding roller 106 from the primary winder 102 to the secondary winder 104, is displaceable along a linear guide path arranged on a chair 14b in accordance with a linear displacement of the winding roller 106 rotationally driven by the secondary winder 104.

The motor lantern 12a of the primary winder is held on a pivotally mounted on a chair 14a pivot lever 1 14 and can thus be pivoted along an arcuate guideway, according to a pivoting of the primary winder associated winding roller 106. Their drum 108 is held for this purpose in a pivot lever assembly 116. There is a pivoting in an angular position or a vertical position of the secondary winder corresponding vertical position, in which a transfer of the rotary drive to the secondary winder 104 takes place.

Serving as a winding core of the winding roller 106 drum 108 is rotatably driven by means of a slidably disposed on an output shaft of the respective synchronous motor coupling hub 18a and 18b directly by the synchronous motor of the primary winder 102 and by the synchronous motor of the secondary winder 104 (depending on the operating situation), as based on Embodiment of Fig. 1 explained. Thus, a "Tamboureinrückvorrichtung" may be provided, comprising a motor output hub corresponding to the motor output hub 16, a sliding or Koppelnabe corresponding to the sliding hub 18 (with an outer toothing 20 corresponding outer teeth) and an engaging lever corresponding to the engagement lever 28. The beschiegbarte also as a sliding sleeve sliding hub 18 thus engages radially inside in a sleeve-like coupling end 24 of the respective spool, technically in the "Tambourglocke" a.

The winding machine according to Fig. 3 has, as known per se, also referred to as a support drum Anpresstrommel or pressure roller 110 which forms a winding nip with the winding roller 106. This Anpresstrommel (carrier drum) or pressure roller is also rotatably driven according to the invention proposals by means of a preferably designed as a permanent magnet torque motor synchronous motor, the part of the drive unit 10 of Fig. 1 essentially corresponding Drive unit 10c is. There may be a permanent coupling with a rotating shaft 112 of the Anpresstrommel (carrier drum) or pressure roller, for example by means of a permanent Drehverkopplung producing coupling sleeve 18c, or a coupling and disengageable coupling, such as by means of a sliding sleeve similar to the embodiment of Fig. 1 ,

The drive unit 10c has, as in the embodiment of Fig. 1 , a cuboid motor lantern 1 2c, which is arranged on a carriage 105c, which is arranged along a arranged on a chair 15c, comparatively short linear guideway slidably controlled to maintain a desired contact pressure in the winding nip.

Fig. 4 shows a schematic side view of the winder 100th Fig. 4 is from the published patent application DE 198 22 261 A1 removed and corresponds there the Fig. 1 , There were the reference numerals of DE 198 22 261 A1 maintained. One understands Fig. 4 as a schematic side view of the winder 100 according to FIG Fig. 3 Thus, the element 32 as a drive unit 10a, the element 50 as a drive unit 10b, the drum or roller 18 as Anpresstrommel (carrier drum) or pressure roller 110, the element 14 'as the primary winder associated drum 108 and the element 14 as already to the secondary winder handed tambour (in Fig. 3 not shown). 30 denotes the primary winder associated, arcuate guideway along which the drive unit 10a is pivoted. 48 designates a guideway associated with the secondary winder, along which the drive unit 10b is moved linearly, according to the example of FIG Fig. 4 For example, by means of a threaded spindle 56 which cooperates with a transport device 36. According to the invention, the drive units are designed with direct center drives based on synchronous motors without the interposition of bevel gears, gear shafts and the like, as shown in FIG Fig. 1 and 3 explained. This represents the most important improvement according to the invention according to the solution DE 198 22 261 A1 represents.

Once again, reference is made to the above-mentioned aspect of the absolute or relative detection of angles of rotation of the electric motor (s) according to the invention. In the case of a winding machine with a primary winder and a secondary winder, a significant advantage is already achieved when the primary winder and the secondary winder are so controllable or controllable by means of the respective synchronous motor that they or the driving formations (such as keyways) their coupling sections (such the sliding sleeves) during their rotation defined rotational positions relative to each other, namely such relative rotational positions, that when the primary winder is in rotational drive engagement with a respective drum, the transfer of the rotary drive to the secondary winder, especially the production of the rotary driving engagement between the spool and the coupling portion of the secondary winder, can be produced without time delay. By ensuring the mentioned defined relative rotational positions can be achieved that the respective entrainment formations of the main cylinder on the one hand and the driving formations of the secondary winder on the other hand occupy or hold a relative angular position to each other so that they can be brought easily in mutual positive engagement. This can be achieved even without a respective rotation angle detecting rotary encoder or the like by a defined angular orientation of the entrainment formations of the respective winder relative to the magnetic poles, in particular permanent magnets, the rotor of the respective synchronous motor is selected. It is then possible to ensure a mutually synchronous and the mentioned relative angular orientation of the entrainment formations of the primary winder on the one hand and the secondary winder on the other hand by generating a defined electromagnetic rotating field by means of the windings of the stator. In other words, It is possible to transmit the angular orientation of the driving formations of the new spool on the synchronous motor of the prime mover and the synchronous motor of the secondary drive, so as to adjust the position z. B. match the internal teeth to the external teeth of the coupling parts to each other. Thus, an end-side abutment is prevented and thus created the best conditions to ensure a good, consistent winding quality (eg winding hardness), even when switching from primary to secondary drive.

Major benefits of using Fig. 1 explained embodiment also result from the provision of the braking device 32, 34, which allows a fast, targeted braking of the coupled drum along with the engine output shaft.

• Torquemotor eingebaut in quaderförmige Motorlaterne;
• Motorabtriebswelle mit Motorabtriebsnabe sowie vorzugsweise einer verstärkten Lagerung;
• Schiebe- oder Koppelnabe mit motorseitigen Mitnahmeformationen, etwa Keilwellenverzahnung, in Zuordnung zur Motorabtriebswelle bzw. zur Motorabtriebsnabe und tambourseitige Mitnahmeformationen (insbesondere Ausbildung einer Zahnkupplung des jeweiligen Tambours);
• Ein- und Ausrückvorrichtung, vorzugsweise mit Gabelgelenk und Ausrücklager;
• der Motorabtriebsnabe oder Motorabtriebswelle zugeordnete Bremsvorrichtung, etwa gebildet von wenigstens einer Bremsscheibe und einer am quaderförmigen Gehäuse gehaltenen Bremszange;
• hohe Positioniergenauigkeit betreffend den Zahneingriff, etwa vermittels einer Lageregelung der Kupplung auf Grundlage eines Drehgebers;
• spielfreier Antrieb durch Wegfall von herkömmlich vorgesehenen mechanischen Antriebselementen;
• Antrieb mit sehr hoher Präzision bei hoher Dynamik;
• Drehzahlerfassung für die Motordrehzahl;
• Motorgehäuse mit integrierter Nachschmiereinrichtung;
• Schmierstellenverteiler zum Nachschmieren der Ein- und Ausrückung sowie der Keilwellenprofile;
• Ein- und Ausrückung über Pneumatikzylinder und Hebelanordnung (vgl. Einrückhebel);
• Hochtemperaturfettschmierung;
• geschlossener Kühlwasserkreislauf für mehrere Wicklermotoren bzw. Wickelmaschinen;
• Kühlwasserspeicher mit Förderpumpe und Zuteilgeräten;
• Kühlwasserkreislauf mit Schmutzfilter zum Rückhalten von Partikein, Strömungswächtern, Temperaturwächtern, Blendeund Absperrhahn;
• Edelstahlkreislauf zur Vermeidung von Korrosionsschutzmittein;
• Kondensatrückführung vom Motor zum Kühlwasserspeicher.

The following features of the illustrated embodiments are considered to be particularly advantageous:

• Torque motor installed in cuboid motor lantern;
• Engine output shaft with motor output hub and preferably a reinforced bearing;
• Sliding or coupling hub with motor-side entrainment formations, such as splines, in association with the engine output shaft and the engine output hub and tambourseitige entrainment formations (in particular formation of a toothed coupling of the respective spool);
• In- and release device, preferably with fork joint and release bearing;
• the brake device associated with the engine output hub or engine output shaft, for example, formed by at least one brake disc and a brake caliper held on the cuboid housing;
• high positioning accuracy regarding the meshing, such as by means of a position control of the clutch based on a rotary encoder;
• backlash-free drive by eliminating conventionally provided mechanical drive elements;
• Drive with very high precision with high dynamics;
• Speed detection for the engine speed;
• Motor housing with integrated relubricating device;
• Lubrication point distributor for regreasing the input and output as well as the splined shaft profiles;
• In- and disengagement via pneumatic cylinder and lever arrangement (see engagement lever);
• High temperature grease lubrication;
• closed cooling water circuit for several winder motors or winding machines;
• Cooling water reservoir with delivery pump and metering devices;
• Cooling water circuit with dirt filter for retaining particulates, flow monitors, temperature monitors, orifice and stopcock;
• Stainless steel circuit to prevent corrosion protection;
• Condensate return from the engine to the cooling water tank.

The features listed above may be provided individually or in combination in connection with winding machines according to the invention.

For the design of the cooling water circuit, the following exemplary information can be made. Depending on the power of the synchronous motor to be cooled, for example, a cooling water flow of 5 to 50 liters / minute, preferably 5 to 30 liters / minute is considered, for example, at a feed temperature of 5 to 50 ° C, optionally 5 to 35 ° C. A lower inlet temperature is usually hardly expedient to avoid condensation. For example, it could be desirable to select the cooling water inlet such that a temperature of less than approximately 50 ° C. is maintained in the cooling water return.

In contrast, however, it may be more expedient for some applications, in particular at higher ambient temperatures, to operate with greater feed temperatures than stated above, for example with a feed temperature greater than 50 ° C., preferably approximately in the temperature range 60 to 70 ° C. Namely, in the case of lower feed temperatures, in some applications undesired condensations can occur either in the engine itself or / and in a drying hood which surrounds it approximately. Due to the higher inlet temperature this is avoided. This advantageously makes it possible to use a corresponding motor or several corresponding motors in the dryer section of a paper or coating machine.

In particular, at an ambient temperature T ~ 90 ° C, the feed temperature should preferably be greater than 50 ° C, preferably 60 to 70 ° C. The return temperature should preferably be greater by 2 ° Kelvin than the inlet temperature.

• Kompakter Wickler-Direktantrieb mit spielfreier Kraftübertragung;
• es sind keine mechanischem Antriebsteile und Vorlegewellen erforderlich;
• durch den erfindungsgemäß eingesetzten Synchronmotor, insbesondere Permanentmagnet-Torquemotor, kann eine konstante Zugleistung bei großem Wickelbereich und kleinen Abmessungen erreicht werden;
• durch kleine bewegte Massen ist die Maschinenkonstruktion vergleichsweise kostengünstig;
• durch die kompakte Bauweise kann der erfindungsgemäße Motor vergleichsweise leicht längs einer Führungsbahn bewegt werden, etwa zwischen einer Primär-Wickelposition und einer Sekundär-Wickelposition bzw. entlang einer dem Sekundärwickler zugeordneten Führungsbahn (insbesondere kann der Motor auf einem Schwenkhebel oder Fahrschlitten angeordnet werden);
• die erfindungsgemäße Motorart bietet die Möglichkeit, den Drehwinkel der "Kupplungshälften" im entkuppelten Zustand aufeinander abzustimmen, um ein sicheres Einkuppeln zu gewährleisten (es wird vermieden, dass Mitnahmeformation auf Mitnahmeformation bzw. Zahn auf Zahn trifft).

In summary, the embodiments of a winding machine shown have the following advantages in particular:

• Compact winder direct drive with backlash-free power transmission;
• no mechanical drive parts and countershafts are required;
• by the synchronous motor used according to the invention, in particular permanent magnet torque motor, a constant pulling power can be achieved with a large winding area and small dimensions;
• by small moving masses, the machine design is relatively inexpensive;
• due to the compact construction, the motor according to the invention can be moved comparatively easily along a guide track, for example between a primary winding position and a secondary winding position or along a guideway associated with the secondary winder (in particular, the motor can be arranged on a pivoting lever or carriage);
• The motor type according to the invention offers the possibility of matching the angle of rotation of the "coupling halves" in the uncoupled state in order to ensure reliable engagement (it is avoided that entrainment formation encounters entrainment or tooth on tooth).

Due to the compactness of the engines, installation is possible both on the driver's side and on the drive side of the machine.

Claims (29)

1. Machine or machine section for preferably continuously winding up a material web, in particular made from paper or cardboard, onto a core which is formed, in particular, by a spool (108) to produce a wound reel (106) and/or for preferably continuously unwinding the material web from a wound reel of this type, it being possible for the respective core to be driven by at least one electric motor (12; 12a; 12b) which is assigned in operating terms at least instantaneously and has a rotor which is coupled or can be coupled to the core in the sense of a rotary drive and a stator which is supported against rotation directly or indirectly on a frame (14; 14a; 14b) of the machine or the machine section or a motor holder which is arranged such that it can be moved relative to the frame, the electric motor, if it is assigned in operating terms to a respective core (108), being arranged coaxially with respect to the said core in a manner which is assigned to an axial end region of the latter, the rotor or a rotary-drive connection (18; 18a; 18b) of the latter being coupled or being capable of being coupled directly and fixedly to the core or a rotary-drive connection (24; 24a) of the latter so as to rotate with it, for substantially play-free common rotation, characterized in that the electric motor is configured as or can be operated as a synchronous motor (12; 12a; 12b), in that, in a first operating phase, the core (108) can be assigned a first electric motor (12a) in operating terms, with the result that its rotor or the rotary-drive connection (18a) of the latter is coupled substantially without play directly to the core or the rotary-drive connection of the latter, in that, in a second operating phase, the core can be assigned a second electric motor (12b) in operating terms, with the result that its rotor or the rotary-drive connection (18b) of the latter is coupled substantially without play directly to the core or the rotary-drive connection of the latter, and in that, in a transitional phase, the rotor or its rotary-drive connection of the first electric motor can be decoupled from the core and the rotor or its rotary-drive connection of the second electric motor can be coupled to the core, preferably in such a way that both electric motors are coupled to the core at least in a part phase of the transitional phase.
2. Machine or machine section according to Claim 1, characterized in that the rotor (24) is configured with permanent magnets (23), preferably produced on the basis of at least one rare-earth material.
3. Machine or machine section according to Claim 1 or 2, characterized in that the rotor (24) is of annular configuration and is arranged radially within the stator (29).
4. Machine or machine section according to Claim 3, characterized in that the electric motor (17; 220) is plugged or can be plugged, in the manner of a hollow-shaft motor, directly onto a shaft journal (13) of the core, which shaft journal (13) serves as rotary-drive connection, the electric motor which is plugged onto the shaft journal being in positively locking rotary driving connection by way of its rotor with the shaft journal.
5. Machine or machine section according to Claim 4, characterized in that the shaft journal (13) is configured as a hollow shaft, for example in order to route an operating fluid, optionally process steam, or condensate, into an interior of the rotary component or in order to discharge a fluid (optionally process steam or condensate) from the interior.
6. Machine or machine section according to one of Claims 1 to 5, characterized in that the electric motor (12; 12a; 12b; 12c; 17; 220) is of the synchronous-motor type which is called "torque motor".
7. Machine or machine section according to one of Claims 1 to 6, characterized in that the electric motor (12; 12a; 12b; 12c; 17; 220) is of the synchronous-motor type which is called "permanent-magnet motor".
8. Machine or machine section according to one of Claims 1 to 7, characterized in that the electric motor (12; 17; 220) has an integrated fluid cooling means, preferably a liquid cooling means, most preferably a water cooling means.
9. Machine or machine section according to Claim 8, characterized in that the stator (29) has an integrated fluid cooling means, preferably a liquid cooling means, most preferably a water cooling means.
10. Machine or machine section according to Claim 8 or 9, characterized by a cooling-fluid circuit (50), in particular a cooling-water circuit, of closed configuration which is assigned to the electric motor and is preferably configured with a cooling-fluid accumulator arrangement (56) and/or with a heat-exchanger arrangement (62) and/or with a filter arrangement (70) and/or with a heating arrangement.
11. Machine or machine section according to one of Claims 8 to 10, characterized in that a plurality of electric motors (11a; 11b; 11c; 11d; 220), in particular a plurality of electric motors which are assigned or can be assigned in each case to another core, are assigned a common cooling-fluid supply, in particular a cooling-water supply (50).
12. Machine or machine section according to Claims 10 and 11, characterized in that the electric motors (11a; 11b; 11c; 11d; 220) can be supplied with cooling fluid, in particular cooling water, via a common cooling-fluid circuit (50) of closed configuration, in particular a cooling-water circuit.
13. Machine or machine section according to Claim 11 or 12, characterized in that the electric motors (11a; 11b; 11c; 11d) are arranged in each case in a dedicated one of a plurality of cooling-fluid branches (52a; 52b; 52c; 52d) which are connected in parallel to one another and have a common inlet (54) and a common outlet (60).
14. Machine or machine section according to Claim 13, characterized in that at least one of the cooling-fluid branches (52a; 52b; 52c; 52d) can be shut off individually and/or can be controlled or regulated individually with regard to the cooling-fluid flow and/or can be monitored with regard to at least one variable of interest, for example the fluid temperature and/or the cooling-fluid flow, and/or in that at least one of the cooling-fluid branches is configured with a dedicated filter arrangement (70).
15. Machine or machine section according to one of Claims 8 to 14, characterized in that condensate which accumulates in the electric motor (11a) or in the region of the (respective) electric motor (11a) can be discharged together with cooling fluid which is fed to the electric motor, in particular can be fed into the cooling-fluid circuit or cooling-fluid branch.
16. Machine or machine section according to one of Claims 1 to 15, characterized in that the electric motor (12a; 12b; 12c) can be displaced with its motor holder along a motor guide track.
17. Machine or machine section according to Claim 16, characterized in that the core (108) and/or the winding reel (106) can be displaced along a winding guide track, and in that the motor guide track and the winding guide track correspond to one another at least in regions for common displacement of the core and/or the winding reel and the electric motor which is assigned to the core in operating terms.
18. Machine or machine section according to Claim 16 or 17, characterized in that the motor guide track (48 [Fig. 4]) extends linearly at least in regions.
19. Machine or machine section according to one of Claims 16 to 18, characterized in that the motor guide track (30 [Fig. 4]) extends arcuately at least in regions.
20. Machine or machine section according to one of Claims 1 to 19, characterized in that the or at least one electric motor (222) is arranged on the drive side (DS) of the machine or machine section.
21. Machine or machine section according to one of Claims 1 to 20, characterized in that the or at least one electric motor (220) is arranged on the operator side (OS) of the machine or the machine section.
22. Machine or machine section according to one of Claims 1 to 21, characterized in that the two electric motors (12a; 12b) are arranged on different sides of the machine or the machine section.
23. Machine or machine section according to one of Claims 1 to 22, characterized in that the first electric motor (12a) can be displaced with its motor holder along a first, preferably arcuate motor guide track (30).
24. Machine or machine section according to one of Claims 1 to 23, characterized in that the second electric motor can be displaced with its motor holder along a second, preferably linear motor guide track (48).
25. Machine or machine section according to one of Claims 1 to 24, characterized in that the first (12a) and the second (12b) electric motors can be actuated in relation to one another in such a way that the rotary-drive connection (18a) of the first electric motor and the rotary-drive connection (18b) of the second electric motor assume a predetermined defined relative rotary position or one of many predetermined defined relative rotary positions relative to one another.
26. Machine or machine section according to one of Claims 1 to 25, characterized in that the rotary-drive connection (18; 18a; 18b) of the rotor on one side and the rotary-drive connection (24; 24a) of the respective core (108) on the other side form a positively-locking coupling which can be engaged and disengaged, in particular a splined shaft/tooth coupling.
27. Machine or machine section according to Claim 26, characterized in that one of the rotary-drive connections which forms the positively-locking coupling comprises a coupling sleeve (18; 18a; 18b) which is arranged on a shaft section in a rotationally fixed and axially displaceable manner and, on an inner circumference and/or outer circumference, has driving formations (20) which can be brought into substantially play-free positively-locking driving engagement with corresponding driving formations (22) on a coupling-sleeve corresponding section (24) of the other rotary-drive connection.
28. Machine or machine section according to Claim 26 or 27, characterized in that a relative rotary position between driving formations (20) of one rotary-drive connection (18) and corresponding driving formations (22) of the other rotary-drive connection (24) can be detected on the basis of at least one associated rotary encoder before engagement of the positively-locking coupling, and in that the electric motor (12) can be adjusted for engagement by electrical actuation in the sense of control and/or regulation in a defined manner into a rotary position which corresponds to an engaged relative rotary position between driving formations and corresponding driving formations.
29. Machine or machine section according to one of Claims 1 to 28, characterized by a brake device (32, 34) which is assigned to the electric motor (12), preferably comprising at least one brake disc (32) which is arranged on a motor output shaft (16).

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