Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
  • B21C47/003—Regulation of tension or speed; Braking
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
  • B21C47/02—Winding-up or coiling
  • B21C47/04—Winding-up or coiling on or in reels or drums, without using a moving guide
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
  • B21C47/16—Unwinding or uncoiling
  • B21C47/18—Unwinding or uncoiling from reels or drums
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
  • B21C47/24—Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
  • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
  • B21C47/345—Feeding or guiding devices not specially adapted to a particular type of apparatus for monitoring the tension or advance of the material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H18/00—Winding webs
  • B65H18/08—Web-winding mechanisms
  • B65H18/10—Mechanisms in which power is applied to web-roll spindle
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2403/00—Power transmission; Driving means
  • B65H2403/90—Machine drive
  • B65H2403/92—Electric drive
  • B65H2403/923—Synchronous motor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
  • B65H2515/30—Forces; Stresses
  • B65H2515/31—Tensile forces
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2701/00—Handled material; Storage means
  • B65H2701/10—Handled articles or webs
  • B65H2701/17—Nature of material
  • B65H2701/173—Metal

Definitions

• the invention relates to a reel for winding or unwinding strip-shaped material, in particular metal strip or the like, and a method for tensioning a spool, the reel comprising a frame, at least one reel head for arranging a spool for winding or unwinding material, a drive arrangement with at least one Electric motor and a shaft connecting the electric motor to the reel head, wherein the electric motor is formed with a stator and a rotor and is arranged on the frame.
• Coils of the type mentioned at the outset are used, for example, in strip production in a rolling process, where the strip is regularly unwound from a first coil with a defined strip tension in a one-way or reversing operation, moved through a nip of a roller device and onto another coiler with a defined strip tension is wound up. Furthermore, the strip can then be wound up on the coiler in a subsequent rolling pass after it has passed through the rolling device several times, when the desired rolled strip thickness has been reached.
• the band-shaped material is arranged in the form of a so-called coil on a spool or on a cardboard tube or as a raw bundle, which is received by a coiler mandrel or coiler head.
• the coil can be clamped onto the coiler head, which can be in the form of an expanding head or a cone head, or coiler heads can be provided on both sides of the coil, which hold the coil between them.
• the or the reel heads are each arranged on a shaft which is mounted on a reel stand.
• the shaft is connected to an electric motor via a gearbox.
• electric motors can also be coupled to the transmission in order to achieve different power levels.
• the shaft can be slidably mounted on the reel stand along a longitudinal axis of the shaft, so that the spool can be accommodated between two reel heads.
• the electric motor, the gear, possibly a clutch, and a frame on which these components are attached form a reel.
• Such a reel is known, for example, from EP 2 896 465 B1.
• the strip-shaped material is wound up with a defined strip tension or a tensile force generated in the strip by the reel.
• This tensile force is set by a control device for the reel, in particular by controlling the electric motor.
• a torque of the electric motor is calculated for regulation, from which a torque of the coiler head or the spool can then be determined.
• the torque can be determined, for example, from a power consumption of the electric motor and its current speed. Since j edoch between the electric motor and reel head a gear, a clutch and optionally an intermediate shaft is interposed, z. B. due to the efficiency of the gearbox, the torque arriving at the reel head can be reduced.
• a disadvantage of the known reels is that they take up a comparatively large amount of space in a production facility due to their structure. Furthermore, each reel is always used for a specific turning and thus individually manufactured.
• the electric motor, gearbox, clutch and reel stand with reel head are always coordinated with one another, so that, for example, an increase in the performance of the reel with a more powerful electric motor usually requires a reinforcement of the drive train and is therefore hardly economically feasible.
• the invention is based on the object of proposing a coiler and a method for tensioning a spool which enables production and operation to be particularly cost-effective.
• the reel according to the invention for winding or unwinding strip-shaped material, in particular metal strip or the like comprises a frame, at least one reel head for arrangement on a spool for winding material, a drive arrangement with at least one electric motor, and a shaft connecting the electric motor to the reel head, wherein the electric motor is designed with a stator and a rotor and is arranged on the frame, the electric motor being a torque motor or synchronous motor, the shaft connecting the rotor directly to the reel head, the rotor being axially displaceable relative to the stator on the stator is stored.
• the electric motor is a torque motor or a synchronous motor, it is possible to connect the reel head directly to the rotor via the shaft. Since a comparatively high torque can be generated with the electric motor, it is no longer necessary to provide a transmission which is interposed between an electric motor and a reel stand. Furthermore, a clutch, the necessary engine mounts and the reel stand itself can also be omitted.
• the frame or a foundation required for the frame at a production site can thus be significantly reduced in size. A space in particular the reel and a size of the frame then result solely from the dimensions of the electric motor integrated in the reel stand and the reel head. Since a large part of the installation space originally required and thus the foundation can be saved, the reel can be manufactured particularly cost-effectively and operated in an energy-efficient manner.
• the rotor is mounted on the stator in an axially displaceable manner relative to the stator.
• the axial displaceability of the rotor relative to the stator can be realized in that the rotor is mounted on the stator in an axially displaceable manner.
• the electric motor can be used like a reel stand known from the prior art.
• a coil can then be stretched particularly easily between two coiler heads or a coiler head can be adapted to a length or position of a coil relative to the longitudinal axis of a shaft.
• the rotor is formed from a ring pack, which in turn is composed of a plurality of rings.
• magnets are in each case arranged on a circumference of the respective ring or in insertion pockets directly under the circumference of the ring.
• the size of the magnets is limited to the dimensions of the respective ring, that is to say the magnets are not arranged across rings, on them.
• the rings can in turn be composed of disks or metal sheets.
• the rings are directly or indirectly connected to each other.
• the rings can be screwed together, that is to say detachably connected to one another.
• the rings can also be attached directly to the shaft or arranged on a rotor carrier arranged between the shaft and an inner diameter of the rings.
• the stator can surround the rotor, in which case, in principle, the rotor can also surround the stator.
• the use of several rings to form the rotor makes it possible to form the electric motor in a modular manner. A number of rings can always be chosen so that an electric motor with a desired performance is formed without the need to change the stator. It is therefore possible to produce electric motors with different outputs using one stator. A production of individually designed reels can be standardized and therefore particularly cost-effective.
• the drive arrangement can be gearless.
• the reel can be produced even more cost-effectively.
• a transmission oil system can then also be dispensed with.
• the efficiency of the reel can be improved since no friction losses occur due to an existing gear.
• the noise emissions from the reel are significantly reduced.
• maintenance of the reel is also lower, since it has fewer components.
• the stator may be formed from a stack of annular metal sheets in which the windings are integrally arranged.
• the annular sheets can be surrounded by a frame that fixes them. Furthermore, the frame can be designed with channels or lines through which a cooling medium flows. If a length of the ring pack is smaller than a length of the winding pack, it is possible to achieve an increase in the output of the electric motor simply by adding a ring to the ring pack. The length of the winding pack can be reduced for all electric motors that are used to form a be used, always be the same, whereby the power of the electric motor individually required for the j ewetz reel can be adjusted by selecting the length of the ring pack. It is advantageous to standardize the length of the stator or its winding package.
• the length of the rotor pack and the length of the winding pack are essentially the same, no more rings can be added to the electric motor.
• the possibility of shifting the rotor axially then arises from the fact that the length of the winding package is greater than the length of the ring package.
• the displacement range resulting from the difference in length allows the rotor to be displaced within this displacement range, without such a displacement resulting in a change in the output of the electric motor. This can be ensured in particular by the fact that the ring pack within the displacement range is always covered by the winding pack during operation.
• the drive arrangement can include at least one electric motor, wherein the electric motor can each have a frame and a coiler head, wherein a coil can be arranged between the coiler heads, wherein the respective winding packets of the electric motors can have a matching length L w . Consequently, an electric motor can be arranged on both sides of the coil. If the respective winding packs of the electric motors have a matching length, the respective stator of the electric motors is designed to be essentially the same. The electric motors can then be designed essentially the same or with different rotors. The fact that the winding packs do not have to be designed differently to form electric motors of different power ratings means that the electric motors can be manufactured and maintained more easily.
• Each of the electric motors can be arranged or fastened on a specially provided frame, with the electric motors also being mounted on a common frame. can be arranged alternately.
• the coil then arranged between the electric motors or the respective reel heads can be moved on a carriage, which is guided on rails, for example, transversely to a longitudinal axis of the two shafts of the electric motors.
• a conveyor track designed in this way for the carriage can be arranged on a foundation specially designed for this purpose.
• the power of the electric motors can be different or the same.
• the electric motors can be operated synchronously when winding up strip-shaped material. Provision can also be made to operate only one of the two electric motors when less power is required. If the electric motors are torque motors or synchronous motors, a drive power of the respective electric motor can be switched electrically between two converters if necessary, so that two or more power levels of the respective electric motor can be formed. Depending on the overall performance required by the reel, the individual individual performances of the electric motors can be designed accordingly and can therefore be of the same size or different.
• a length L R of the respective ring packets of the electric motors can be different.
• the length of the ring pack determines a mass of magnets on a circumference of the respective ring pack, and thus a power output of the respective electric motor.
• the formation of electric motors with different power levels can then easily take place over the length of the respective ring assembly.
• the rings can have a different width or an identical width.
• a ring pack is formed of a plurality of rings, it becomes possible to control a length of the ring pack. This can be done by using a certain number of rings to form the desired length, and thus the power of the electric motor.
• the rings used can have the same width or different widths.
• senior If a selection of rings with different widths is available, there is the possibility of providing a larger number of possible lengths of the ring assembly that can be formed when designing an electric motor.
• a large possible variation in the length of the ring pack already results when the ring pack can be assembled from a number of rings with two or three different widths.
• the drive arrangement can include a tensioning device with an actuator, it being possible for the rotor to be axially displaceable relative to the stator by means of the actuator.
• the actuator can be, for example, a hydraulically or pneumatically driven piston or a linear motor.
• the actuator can be coupled to the shaft of the electric motor in such a way that a movement of the actuator causes a displacement of the shaft along the longitudinal axis. Since the rotor can then be displaced relative to the stator by means of the actuator, the reel head can also be displaced along the longitudinal axis. It is then possible to arrange a coil between the coil heads and to tension the coil on the coil heads or to move the coil heads into the coil and/or to form a clamping force between the coil heads and the coil.
• the rotor can be arranged on the shaft and mounted on a housing of the stator with radial bearings and at least one axial bearing, with a longitudinal guide between the layers and the housing being able to be formed on both sides of the rotor in relation to a longitudinal axis of the shaft.
• the bearings can be slide bearings and/or preferably roller bearings.
• the roller bearings can be deep groove ball bearings, for example, so that the bearings can absorb axial and radial forces.
• the radial bearing and the thrust bearing can be formed by a single bearing.
• the longitudinal guide can be formed, for example, by a sleeve that can be moved in a bushing in the direction of the longitudinal axis. However, other types of longitudinal guides can also be used.
• the sleeve can be part of the housing of the stator be and the rotor is then rotatably mounted with the radial bearings and the axial bearing on the sleeve.
• a mounting of the shaft on the housing can preferably be provided on both sides of the rotor.
• the rotor it is then possible for the rotor to be rotatable relative to the stator and at the same time to be displaceable along the longitudinal axis of the shaft together with the shaft.
• Such a longitudinal guide can be formed in a particularly simple manner.
• the actuator can then also be connected to the socket.
• any desired cross-sectional shape can be provided for forming such a longitudinal guide.
• the drive arrangement can include a further actuator, by means of which the electric motor can be displaced axially relative to the frame, based on a longitudinal axis of the shaft, on a further longitudinal guide formed on the frame.
• the additional actuator can be designed like the actuator and can be arranged on a housing of the stator or on the frame. The additional actuator can then be coupled to a piston on the housing or the frame, for example, so that a movement of the piston causes a relative movement of the frame and the housing.
• a further linear guide can also be formed between the housing and the frame, which allows a longitudinal displacement of the electric motor. If the drive arrangement comprises a plurality of electric motors, each of these electric motors can be designed to be longitudinally displaceable in this way. In particular, a displacement range of the electric motor can be significantly expanded in this way, so that coils with a wide variety of lengths can be accommodated on the coiler.
• the electric motor can be designed with a housing which can be attached to the frame, wherein at least one force transducer of a sensor device of a control device of the reel can be arranged between the housing and the frame.
• the control device can consequently be used to control and regulate the reel and in particular serve in particular the strip tension of the coiler, which is formed by a strip tensile force within a strip that is wound up by the coiler on the spool.
• the electric motor causes a torque with the rotor, which is transmitted via the shaft to the coiler head and thus the coil.
• the diameter of the spool can vary greatly, so that the tape tensile force is always dependent on this diameter.
• a regulating device of the control device can be designed in such a way that the relevant diameter is taken into account when regulating the strip tensile force.
• a torque of the shaft can consequently also be regulated by means of the regulating device in order to regulate the strip tensile force. This then takes place regularly by controlling the electric motor connected to the shaft. Since the electric motor is directly connected to the reel head via the shaft without a gear, a clutch or the like being connected in a drive train in between, it becomes possible to transfer the torque, which effectively acts on the reel head or the spool, to the electric motor to be measured, as a very precise measurement of the torque can be assumed as a result of the direct power transmission.
• the direct power transmission enables the torque to be measured using the force transducer, which is located between the housing of the electric motor and the frame on which the electric motor is attached.
• the force transducer When the force transducer is fastened between the housing and the frame, the torque exerted on the shaft by the electric motor causes the force transducer to be subjected to a force that can be measured, with the sensor device or the control device being able to determine the torque of the shaft from the measured values .
• Only the direct connection between the electric motor and the reel head via the shaft enables this type of torque measurement and thus a particularly precise control of the strip tension.
• the force transducer can be designed to record a compressive force and/or a tensile force or a torque.
• the force transducer a sensor in particular a force sensor, can be a load cell or measuring cell with which a force that acts on the sensor can be measured.
• a force measurement can be carried out using a spring body, piezoelectrically, electromagnetically, electrodynamically or electroresistively. In this case, it can be provided that electroresistive sensors, in particular strain gauges, are dispensed with, since these can be influenced by a magnetic field of the electric motor.
• the force transducer can be arranged at a radial distance relative to a longitudinal axis of the shaft. From the radial distance of the force transducer relative to the shaft, a torque can be easily calculated from a force measured with the force transducer.
• the force transducer can be designed to record a compressive force and/or a tensile force. Depending on the direction of rotation of the shaft in relation to a direction of the belt tensile force, the force transducer can be subjected to a compressive force or a tensile force. In particular, it is advantageous if a compressive force and also a tensile force can be determined with the force transducer.
• the housing can be fixed to the frame at attachment points, it being possible for a force transducer to be arranged at at least one attachment point.
• the attachment point can be formed, for example, by a screw connection between the housing and the frame. In principle, however, the attachment point can also be a support point of the housing on the frame.
• force transducers are arranged at all fastening points. It is thus possible to record all of the forces acting between the housing and the frame and thus to determine a torque of the shaft particularly precisely. In principle, however, this is not necessary, since a torque can already be determined with a single force transducer if a distribution of the forces acting at the fastening points is known.
• the force transducer can be arranged on a connecting flange of the housing and/or the frame.
• the housing and the frame can each form a connecting flange, in which case the connecting flanges then rest against one another and can be firmly connected to one another via a screw connection. The force transducer can then be arranged between these connecting flanges.
• a preload of a screw connection can already have an effect on the force transducer.
• the sensor device can be calibrated in such a way that this preload is not taken into account or does not falsify a measurement result of the force transducer.
• the drive arrangement can have two reel heads, in which case the reel heads can each be designed with an expanding head or a cone for receiving the coil.
• the drive arrangement if it has only one electric motor, to be designed with a single expanding head.
• the expanding head can be designed in such a way that it can be inserted into an opening at one end of a spool. Segments of the expanding head can then be braced against an internal tension of the coil, so that the coil is firmly fixed and centered on the expanding head with a non-positive fit.
• the movement of the segments can be effected, for example, hydraulically or by means of a pull rod.
• the cone can be designed in such a way that it rests against one end of the spool, so that the spool is clamped between two reel heads that can be moved towards one another.
• the coil is then centered relative to the coiler head.
• the expansion head can have an expansion segment arrangement having expansion segments and designed for radial tensioning of the coil, wherein at least one hydraulic line can be formed within the shaft or a pull rod can be arranged to actuate the expansion segments.
• the shaft can therefore be designed as a hollow shaft or a solid shaft. In principle, it is also possible to connect the expanding head directly, that is, to a hydraulic or mechanical actuation on the expanding head itself, so that the shaft is unaffected by this.
• the modular system according to the invention for forming a reel according to the invention comprises a stator formed from a winding package with a plurality of windings or winding overhangs and a plurality of rings, each with magnets on a circumference of the respective ring or in insertion pockets directly under the circumference of the ring, the serve to form a ring package of a rotor, wherein the rings are selected from a first set of rings with a first width and a second set of rings with a second width, which can differ from the first width.
• the modular system according to the invention enables ring packs to be formed with different lengths L R , so that electric motors with different outputs can be assembled from these ring packs or the module systems.
• a rotor is attached to at least one electric motor of a drive arrangement of the reel relative to a stator of the electric motor by means of a tensioning device of the Drive arrangement is axially displaced in such a way that the coil arranged between the coil heads of the drive arrangement is tensioned or released, the electric motor being a torque motor or synchronous motor.
• the axial displacement can be used for strip center control and/or strip center centering before or during a rolling operation.
• the strip center control is used to unwind the strip from a coil that is not wound with straight edges during rolling and to guide it centrally through a roll gap in order to then wind it onto a spool with straight edges.
• Strip centering is used to center a coil that is not wound with straight edges in a rolling line before rolling, so that the coiled strip is guided centrally through the roll gap.
• a position of the strip can be determined by means of sensors. Data from the sensors can be used for control and thus for axial displacement.
• a coiler according to the invention is used to carry out the method according to the invention. Further advantageous embodiments of the method result from the feature descriptions of the dependent claims referring back to the device claim 1 .
• FIG. 1 shows a first embodiment of a reel in a longitudinal sectional view
• FIG. 2 shows a second embodiment of a reel in a longitudinal sectional view
• 3 shows a third embodiment of a reel in a longitudinal sectional view
• FIG. 4 shows a fourth embodiment of a reel in a longitudinal sectional view.
• the reel 10 here comprises two essentially identically designed frames 13, two identically designed reel heads 14 for arranging the spool 12 and a drive san Aunt 15, which in turn includes two matching trained electric motors 16 or torque motors.
• Each of the electric motors 16 is formed from a stator 17 and a rotor 18 , the stator 17 surrounding the rotor 18 and the rotor 18 being rotatably mounted within the stator 17 .
• the rotor 18 is arranged in a rotationally fixed manner with a rotor carrier 19 directly on a shaft 20 of the electric motor 16 , the shaft 20 in turn being directly connected to the reel head 14 .
• the rotor 18 is also formed from a ring pack 21 of a plurality of rings, not shown in detail here, each with magnets on a circumference 22 of the respective ring. These rings are detachably connected to each other.
• the stator 17 is formed from a winding assembly 23 with a plurality of windings, not shown in detail here, which are surrounded by a frame, not shown in detail here. Cooling channels 24 are formed within this frame, through which a cooling medium (not shown here) flows and which serve to cool the winding package 23 . Passive cooling or surface cooling of the frame is also possible.
• the electric motor 16 is further formed with a housing 25 which surrounds the rotor 18 and the stator 17 .
• the housing 25 is firmly connected or screwed to the frame 13 at attachment points 26 .
• the frame 13 is in turn firmly connected to a foundation 28 at attachment points 27 .
• the housing 25 with a Longitudinal guide 29 is formed, which allows an axial displacement of the rotor 18 relative to the stator along a longitudinal axis 30 of the shaft 20.
• the longitudinal guide 29 is formed of sleeves 31 and 32, which are arranged on both sides of the rotor 18, and the sleeves 31 and 32 surrounding bushings 33 and 34, respectively.
• the shaft 20 is mounted radially and axially within the sleeves 3 1 and 32 by means of roller bearings 35 .
• a displacement of the rotor 18 relative to the stator is possible within a displacement range V, the displacement range V resulting from a difference between a length L R of the ring assembly 21 and a length L w of the winding assembly 23 .
• a possible displacement takes place by means of an actuator 36 which is formed here by a hydraulic cylinder 37 and is coupled to the bushing 33 via a strut 38 . Due to the possibility of shifting the rotor 18 or the shaft 20 with the reel head 14, a tensioning device 39 for tensioning the coil 12 between the reel heads 14 is formed.
• the direct drive of the coil 12 by the electric motors 16 makes it possible to significantly reduce the number of rotating parts of the reel 10 and to dispense with further drive shafts, couplings or the like.
• a mechanical brake as an operating brake on the reel can also be dispensed with, since a short circuit in the windings can be used to brake via a resistor in the event of a power failure or a converter fault in the electric motors 16 .
• a standstill brake can also be dispensed with, since the rotor can be held in its position by short-circuiting the windings when the rotor is at a standstill.
• the drive arrangement 15 includes a further actuator 40 which is arranged on the frame 13 and is formed by a further hydraulic cylinder 41 .
• the housing 25 is held on a further longitudinal guide 42, which is formed on the frame 13, and can also be displaced axially in the longitudinal direction of the longitudinal axis by means of the further actuator 40.
• the reel heads 14 are each designed here as a spreading head 43, which has spreading segments, not shown here, which can be actuated via a hydraulic line, also not shown.
• the expansion segments can bring about a clamping force on an inner side 44 of the coil 12, so that the coil 12 is centered on the respective expansion heads 43 and clamped in a torque-proof manner.
• the coil 12 with the material 11 can be transported to the reel 10 by means of a carriage 45 which can be moved on rails 46 transversely to the longitudinal axis 30 .
• force transducers 47 are arranged between the housing 25 and the frame 13 on the housing 25 or the fastening points 26 .
• the force transducers 47 are part of a control device that is not shown in detail here.
• the control device serves to regulate a strip tension or a strip tensile force of the reel 10 or a power and thus a torque of the electric motors 16.
• the control device comprises a regulating device for regulating the strip tensile force or the electric motors 16 and a sensor device, which in turn comprises the force transducers 47 .
• the fact that the force transducers 47 are arranged between the frame 13 and the housing 25 makes it possible to determine the forces acting between the frame 13 and the housing 25 .
• FIG. 2 shows a reel 48 in which, in contrast to the reel from FIG. 1, a frame 49 is designed without a further longitudinal guide. A coil 50 can already be tensioned here by the tensioning device 39 .
• FIG. 3 shows a reel 51 in which, in contrast to the reel from FIG. The coil 54 is formed with an inner cone 56 at its respective ends 55 . The spool 54 can be centered by tensioning between the reel heads 52 and received non-rotatably on the reel 48 in a non-positive manner.
• FIG. 4 shows a reel 57 in which, in contrast to the reel from FIG. 1, only a frame 13 and an electric motor 16 are provided. Instead of a further electric motor, a counter bearing 58 is provided here.
• a spreading drum 59 for receiving a coil 60 or raw coil is attached on the shaft 20 of the electric motor 16. In the case of a raw coil, the material 11 is arranged directly on the spreading drum 59 and without the coil 60 .

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Unwinding Webs (AREA)
• Manufacture Of Motors, Generators (AREA)
• Winding, Rewinding, Material Storage Devices (AREA)
• Winding Of Webs (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=79270095

Family Applications (1)

Country Status (6)

Family Cites Families (9)

• 2021
  • 2021-01-25 DE DE102021101530.8A patent/DE102021101530A1/de active Pending
  • 2021-12-09 WO PCT/EP2021/084948 patent/WO2022156955A2/de active Application Filing
  • 2021-12-09 US US18/273,485 patent/US11919733B2/en active Active
  • 2021-12-09 CN CN202180091582.7A patent/CN116761684A/zh active Pending
  • 2021-12-09 JP JP2023544086A patent/JP2024506494A/ja active Pending
  • 2021-12-09 EP EP21839037.5A patent/EP4281231A2/de active Pending

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