EP3521226A1 - Device and method for forming a multi-band coil - Google Patents

Abstract

The present invention relates to a device (1) for forming a multi-part strip coil from several individual strip coils. The device (1) is characterized by an untwisting unit (4), wherein a strip coil (3) can be positioned with its inner side (8) around the untwisting unit (4), the device (1) being set up to allow a relative rotation between the To bring about untwisting unit (4) and a band coil (3), and the untwisting unit (4) can exert a radially directed pressure force against a band coil inner side (8) during a relative rotation between the untwisting unit (4) and band coil (3). The present invention also relates to an associated method.

Description

The present invention relates to an apparatus and a method for forming a multi-piece band coil of a plurality of individual band coils according to the independent claims. Such a multipart tape coil includes, for example, a so-called PUP ("Piece Under Piece Coil") coil, which is so-called because the individual band coils are arranged in the PUP coil in a nested arrangement, for example nested in one another.

A molded with the device according to the invention multi-part tape coil, for example, a PUP coil is formed, inter alia, in coil processing operations of smaller band coils, which are incurred for example as cut remnants in the processing of large band coils. These multi-part band coils are then fed to other processing processes. For this they are often packaged and sent to other companies for further use.

So far, such multi-part band coils of employees manually pushed each other until a multi-part tape coil of a desired size is created.

However, this manual work is physically exhausting, tedious and associated with a high risk of injury to the workers, for example due to the sometimes sharp edges of the band coils. Also, the size of the multi-part band coil is severely limited by the physical capacity of the worker.

The present invention has for its object to make the forms of a multi-part band coils easier, faster and safer.

The invention solves this problem with the features in the characterizing part of the independent device claim.

The device comprises here an untwisting unit, wherein a band coil with its Bandcoilinnenseite is positionable about the untwisting unit, wherein the device is adapted to cause a relative rotation between the untwisting unit and a band coil, and the unwinding unit at a relative rotation between Aufdreehenheit and Bandcoil a can exert radially directed compressive force against a Bandcoilinnenseite.

Due to the turning unit, which can exert a radially directed compressive force against a Bandcoilinnenseite at a relative rotation between Aufdreheinheit and Bandcoil, it is possible to the inner diameter of Bandcoils by untwisting the band coils to thereby creating room for positioning further band coils between the turning unit and the inside of the enlarged band coils. By the pressure force when rotating against a Bandcoilinnenseite the untwisting unit can turn up a band coil, since the aufzudrehende Bandcoil undergoes both a radial force and a rotational force by the friction between Aufdreheinheit and Bandcoilinnenseite.

Conveniently, the device may have a limiting structure arranged in the radial direction of the turning unit, against which the turning unit can press a band coil from the inside of the band coil.

This limiting structure makes it possible to create a defined stop for the radially outermost band coil of the multi-part band coil to be formed. The delimiting structure can thus decelerate or hold stationary the outermost band coil and thus facilitate unraveling. Furthermore, the limiting structure allows a pressing compression of the individual band coils of the multi-part band coil.

Advantageously, the limiting structure can surround the untwisting unit in the radial direction. Thus, a defined stop for multiple locations of the outermost band coil can be created. The outer dimensions, for example, the outer diameter of the multi-part band coil to be formed can be so easily defined.

In one possible embodiment, the turning unit may have an axis of rotation, and the turning unit may be configured to rotate in different radii about the axis of rotation and to exert a radially directed compressive force against a Bandcoilinnenseite with increasing radius.

All you have to do is rotate the revolving unit to turn on band coils while the band coils do not need to be rotated.

In a further possible embodiment, the turning unit may be formed in a basic position columnar, in particular taper at a free end.

This allows easy positioning of a bandcoil with its bandcoil inside the untwisting unit. An optional tapering at the free end allows a thorn-like design of the turning unit in the basic position and so easy positioning of bulky band coils with initially small inner diameter.

Optionally, the turning unit with its axis of rotation can be aligned vertically. As a result, a band coil positioned around the untwisting unit is likewise positioned vertically upwards with its coil eye and can thus be turned up very uniformly and easily radially in the horizontal direction.

In a further embodiment, the turning unit may comprise a force and motion conversion mechanism which converts a force and / or movement introduced in the turning unit in the direction of the rotation axis into a radial pushing force and / or movement of the turning unit. This allows a simple and compact design of the turning unit. The force and / or movement introduced in the direction of the axis of rotation can hereby undergo a desired change in magnitude, for example an increase or a decrease, during the conversion.

In a variant of the invention, the force and movement conversion mechanism may have a linear actuator acting in the direction of rotation and a scissors mechanism acting radially. This combination allows a particularly compact, for example, columnar, and reliable execution of the turning unit.

In an advantageous embodiment, the turning unit may comprise at least one extendable boom for pressing against a Bandcoilinnenseite, in particular at least one extendable and rotatable boom.

Such a design allows a controllable pressing against a Bandcoilinnenseite. An optional extendable and rotatable version of the boom further allows simultaneous application of a compressive force and a rotational force against a belt coil inside the boom.

Advantageously, in one embodiment, the at least one cantilever may have at its free end a shield which is adapted to press against a bandcoil inner side and slide on rotation along a bandcoil inner side under friction. The shield advantageously enables a flat pressing against the belt coil inside while simultaneously applying a rotational force against the belt coil inside.

In a further advantageous embodiment, a first rotational-axis-side end of the scissor mechanism can be articulated stationarily and a second, movable rotational-axis-side end of the scissor mechanism can be articulated to the linear actuator, and two of the axes of rotation facing away from the scissors mechanism to be hinged to the shield, wherein one of the shield-side ends can be hinged in Rotationsachsrichtung slidably to the shield.

This arrangement of linear actuator, scissor mechanism and shield advantageously combines the advantages and functions previously mentioned in connection with these features. Furthermore, such an arrangement, for example, when introducing a constant force in the linear actuator allows increasing with increasing radius pressing force of the boom against the Bandcoilinnenseite.

In a preferred possible embodiment, the turning unit may comprise a plurality of extendable, preferably also rotatable, arms, which are arranged in the circumferential direction around the axis of rotation of the turning unit, in particular in mutually equal distances in the circumferential direction.

As a result, pressure forces can be exerted evenly against the Bandcoilinnenseite and thus a Bandcoil be turned up faster and more reliable. This is especially true for the optional rotatable version of the boom.

In one possible embodiment, the delimiting structure can be reversibly detachable from the device.

This facilitates access to the multi-part tape coil after forming the multi-piece tape coil, for example, to remove it from the device and / or pack it.

Advantageously, in one possible embodiment, the limiting structure may be formed as part of a removable coil transport means, in particular as a side wall of a removable coil transport container.

This allows embodiments in which the shaped multi-part band coil is already connected to a coil transport means so that the band coil can already be separated with the coil transport means from the rest of the device and transported on. The optional design of the limiting structure as a side wall of a removable coil transport container is in this case a particularly advantageous embodiment.

For a particular possible embodiment, the turning unit may protrude through a through hole of the detachable coil transport means, in particular the Coil transport container have a bottom and a side wall, and project the turning unit through a through hole in the bottom of the coil transport container in the coil transport container.

This special arrangement between turning unit and coil transport means allows easy forming of the multi-part band coil on the coil transport means. The special, optional version between turning unit and a coil transport container is particularly advantageous.

Furthermore, in one embodiment, the coil transport container may be open at the top. This allows easy insertion of the individual band coils in the coil transport container and thus in the device, and also later a slight lifting out of the shaped multi-part band coil from the coil transport container.

Advantageously, in one embodiment, the coil transport container can be opened and closed laterally. This allows a simple lateral access to the molded multi-part band coil, for example with a forklift.

In a further possible embodiment, a removable transport pallet with a through hole may be provided at the bottom of the coil transport container, and the through hole of the transport pallet and the through hole of the coil transport container are in alignment with the rotation axis of the untwisting unit and dimensioned such that the coil transport container along with the transport pallet is in the rotational axis direction is removable from the rest of the device.

This arrangement allows a simple and reliable forms of a multi-part band coil lying on a transport pallet lying in a coil transport container, the multi-part band coil is already prepared particularly advantageous for subsequent processing and transport steps.

The object mentioned at the outset is furthermore achieved according to the invention by the following method:
A method of forming a multi-piece band coil from a plurality of individual band coils, characterized by positioning at least one band coil with its inside about a untwisting unit, rotating the unwinding unit and the at least one band coil relative to each other, pressing the unwinding unit in relative rotation against the inside of the at least a band coils until the inner diameter of the at least one band coil is increased.

As already mentioned in the independent device claim, it is possible with this method to expand the inner diameter of band coils by unwinding the band coils and thereby to create space for positioning further band coils between the revolving unit and the inside of the enlarged band coils. Due to the compressive force during rotation against a Bandcoilinnenseite the untwisting unit can turn up a band coil, since the band coil undergoes both a radial force and a rotational force due to friction between Aufdreheinheit and Bandcoilinnenseite.

In an advantageous possible embodiment, the method further comprises positioning at least one further band coil between the revolving unit and the at least one enlarged band coil, rotating the revolving unit and the at least one further band coil relative to each other, pressing the revolving unit in relative rotation against the inside of the at least a further band coils until the inner diameter of the at least one further band coil is increased.

At the latest in this design, a multi-part tape coil is formed.

In a further possible embodiment, the method further comprises pressing the at least one further band coil against the inside of the enlarged at least one band coil.

As a result, the shaped multi-part band coil is compacted.

In a further possible variant of the method, the turning unit rotates, in particular about a vertical axis of rotation.

Thus, the relative rotation can be brought about solely by the untwisting unit, while the at least one band coil does not have to be rotated independently. A vertical axis of rotation allows positioning of a band coil to the turning unit with its coil eye also vertically upwards. As a result, the band coil can be turned up very uniformly and easily from the untwisting unit in the radial, horizontal direction.

In a particular possible variant of the method, the turning unit is rotated in variable radii about an axis of rotation and presses with increasing radius against the inside of the at least one band coil.

This allows advantageous pressing and rotating by the turning unit against an inside of the at least one band coil.

In an expedient possible variant of the method, an introduced in the turning unit force and / or movement is converted into a radial compressive force and / or movement against a Bandcoilinnenseite.

This allows a simple and compact design of the turning unit. The introduced force and / or movement may further undergo a desired amount of change, such as an increase or decrease, in the conversion.

In an advantageous possible variant of the method, the introduced force and / or movement can be converted by a combination of linear actuator and scissors mechanism into a radial force and / or movement.

This combination allows a particularly compact, for example, columnar, and reliable execution of the turning unit.

In a further possible variant of the method, at least one radially extendable arm of the revolving unit is rotated and presses with increasing radius against the inside of the at least one band coil.

Such a design reliably enables a controllable pressing and rotating against the inside of the at least one band coil. The boom further allows simultaneous application of a compressive force and a rotational force against an inner side of the at least one band coil by the cantilever.

In an advantageous possible embodiment of the method, a plurality of radially extendable arms of the revolving unit rotate and press with increasing radii against an inner side of the at least one band coil, in particular with simultaneously increasing same radii.

As a result, the inside of the at least one band coil can be pressed radially at several points simultaneously, which allows a more uniform untwisting of the at least one band coil. A simultaneous increase in equal radii allows simultaneous and equal pressing at several points on the inside of the at least one band coil, and thereby easier and more uniform unwinding and a uniform radial compression of the molded multi-part band coil.

In one possible embodiment of the method, all the arms rotate at the same speed.

As a result, the inside of the at least one band coil experiences the same rotational force through all the arms.

In a wide possible embodiment of the method, the arms rotate in the circumferential direction at equal distances from each other about the axis of rotation.

As a result, the pressure forces are delivered very evenly to the inside of the at least one band coil.

In a further possible variant of the method, the at least one band coil is pressed in the radial direction against a limiting structure.

This allows, for example, to create a defined stop for the outermost band coil of the multi-part band coil to be formed. The delimiting structure can thus decelerate or hold stationary the outermost band coil at this point against rotation and thus facilitate unraveling. Furthermore, the limiting structure allows a better pressing compression of the individual band coils in the multi-part band coil through the untwisting unit.

In a proposed possible variant of the method, the multi-part band coil is formed on a coil transport means, in particular formed in a coil transport container.

Thus, the multi-part band coil after forming is already on a coil transport for subsequent processing. The optional forming in a coil transport container protects the worker from the individual band coils.

In a further possible variant of the method, the turning unit protrudes through a through hole in the bottom of a coil transport means detachable from the turning unit, in particular protruding through a through hole in the bottom of a coil transport container detachable from the turning unit into this coil transport box during molding of a multi-piece band coil.

In this way, the multi-part band coil can be formed lying on the coil transport means and can be easily transported to subsequent operations. The aforementioned optional arrangement between turning unit and a coil transport container is hereby Particularly advantageous because among other things, the workers can be better protected by the container before the multi-part tape coil.

In a further possible embodiment of the method, the coil transport means has the delimiting structure, in particular the delimiting structure is part of a side wall of the coil transport container.

This advantageously combines the advantages of the limiting structure with those of the coil transport means, in particular with those of the coil transport container.

In a further possible variant of the method, the turning unit is designed according to one of the device claims.

In another possible variant of the method, the method is performed with a device according to one of the device claims.

In the following, a possible embodiment of the invention, which advantageously combines several of the aforementioned embodiments and inventive aspects, will be described in more detail with reference to the figures.

Fig. 1

eine perspektivische Ansicht von schräg oben auf eine Ausführungsform einer erfindungsgemäßen Vorrichtung mit einer Aufdreheinheit in einer Grundstellung und mit einem Coiltransportbehälter mit darin eingelegter Transportpalette,

Fig. 2

die Vorrichtung aus Fig. 1 mit Auslegern der Aufdreheinheit in einer ausgefahrenen Stellung,

Fig. 3

die Vorrichtung aus Fig. 2 ohne Coiltransportbehälter aber mit Transportpalette,

Fig. 4

den Coiltransportbehälter aus Fig. 1 mit eingelegter Transportpalette und entfernter Seitenwand,

Fig. 5

die Vorrichtung aus Fig. 1 mit einem eingelegten, noch nicht aufgedrehten Bandcoil,

Fig. 6

die Vorrichtung aus Fig. 5 mit Auslegern der Aufdreheinheit in einer voll ausgefahrenen Stellung und mit aufgedrehtem Bandcoil,

Fig. 7

die Vorrichtung aus Fig. 6 mit Auslegern der Aufdreheinheit in wieder eingefahrener Grundstellung und mit dem aufgedrehten Bandcoil,

Fig. 8

ein schematisch gezeichnetes, noch unaufgedrehtes Bandcoil,

Fig. 9

ein schematisch gezeichnetes, von der Vorrichtung geformtes mehrteiliges Bandcoil aus mehreren einzelnen Bandcoils.

Showing:

Fig. 1

a perspective view obliquely from above on an embodiment of a device according to the invention with an untwisting unit in a basic position and with a coil transport container with inserted transport pallet,

Fig. 2

the device off Fig. 1 with arms of the turning unit in an extended position,

Fig. 3

the device off Fig. 2 without coil transport container but with transport pallet,

Fig. 4

the coil transport container Fig. 1 with inserted transport pallet and removed sidewall,

Fig. 5

the device off Fig. 1 with an inserted, not yet wound up bandcoil,

Fig. 6

the device off Fig. 5 with arms of the untwisting unit in a fully extended position and with unwound bandcoil,

Fig. 7

the device off Fig. 6 with arms of the turning unit in the retracted basic position and with the wound up coil,

Fig. 8

a schematically drawn, still unturned bandcoil,

Fig. 9

a schematically drawn, formed by the device multi-part band coil of several individual band coils.

Fig. 1 1 shows a device 1 according to the invention for forming a multi-part band coil 2, in this case a PUP coil, from a plurality of individual band coils 3.

The device 1 here has a turning unit 4, a support frame 5, a drive and control unit 6 and a means of transport, here in the form of a coil transport container 7, on.

The device 1 here has a cuboid shape, which is characterized by the cuboid support frame 5, which receives the coil transport container 7, and the cuboid, used in the support frame 5 coil transport container 7.

The device 1 is open at the top, so that a band coil 3 or even several band coils at a time can be placed from above into the coil transport container 7, that the inside 8 of the band coils 3 are positioned around the here columnar Aufdreheinheit 4 around.

The untwisting unit 4 is positioned in the center of the device 1, ie also in the center of the coil transport container 7, and is surrounded by the support frame 5 and the coil transport container 7.

The turning unit 4 extends in a column shape along a vertical axis of rotation A here, is rotationally symmetrical here, is with its one end 9 on the bottom 10 of the device 1 with the mostly laterally and on the bottom 10 of the device 1 positioned drive and control unit 6 mechanically and hydraulically connected, and is directed with its tapered free end 11 like a needle upwards.

The turning unit 4 protrudes into the coil transport container 7 through a through hole 12 in the bottom 13 of the coil transport container 7 and through a through hole 14 of a transport pallet 15 in the coil transport container.

The coil transport container 7 has four side walls 16, at least one of which can be opened and closed, and the bottom 13 and is open at the top. The height of the side walls 16 in the direction of the axis of rotation A, ie here in the vertical direction, is chosen so that it is at least equal to the length at which the revolving unit 4 extends into the coil transport container 7, so that the untwisting unit 4 does not project beyond the side walls 16 here.

A part of the lateral surface 17 of the columnar turning unit 4 is formed by radially movable shields 18, here by a total of three radially movable shields 18th

These shields 18 are each connected via a radially acting scissors mechanism 19 with a linear actuator 20 positioned in the revolving unit 4 and acting along the axis of rotation A, here with a hydraulic cylinder.

The drive and control unit 6 includes a controllable electric motor, not shown, and a controllable hydraulic pump 22. The electric motor is in this case connected via a located on the bottom 10 of the device worm gear 23 with the rotatably mounted turning unit 4 in order to rotate it. The hydraulic pump 22 is connected via a rotary feedthrough, not shown, with the hydraulic cylinder in order to extend this and can.

As in Fig. 2 can be seen well, the revolving unit 4 here comprises three extendable boom 24, which each include one of the scissors mechanisms 19 together with plate 18. In this embodiment, the whole projecting into the coil transport container 7 part of the turning unit 4 is rotatable at a controllable speed, including the boom 24. The boom 24 are extended here in its maximum radial extension length. A tape coil is not shown in this figure for purposes of illustration. The combination of linear actuator 20 and scissor mechanism 19 acts here as a force and motion conversion mechanism which converts force and / or movement of the linear actuator 20 into radial force and / or movement of the arms 24.

As in Fig. 3 can be seen better, the two ends 25, 26 facing away from the axis of rotation A, each scissors mechanism 19 are hinged to the inside of the shield 18 facing the axis of rotation A. Furthermore, here the upper 25 of the two ends in Rotationsachsrichtung A slidably guided on the plate 18. The shield 18 is curved here running channel-shaped, pointing with the convex curved side radially outward. A bandcoil 3 is not shown here for better illustration, nor is the coil transport container 7.

At the two in Fig. 3 not shown rotationsachsseitigen ends of the scissors mechanism 19, the lower end is stationarily hinged to the drive unit 4 and the upper, other end to the displaceable part of the linear actuator 20, here the hydraulic cylinder hinged.

All scissor mechanisms 19 are connected to the linear actuator 20 in this manner.

As in Fig. 3 can be seen, and can be better understood with the following figures, for example, a transport pallet 15, for example, as here still with a low-friction top 27, such as a sheet metal support provided, form the support surface for a multi-part band coil 2 to be formed. The transport pallet 15 further has the through-hole 14 at a central location.

Fig. 4 shows the coil transport container 7 separated from the rest of the device 1 and with inserted transport pallet 15. One of the side walls 16 has been removed from the container 7 here. In this embodiment, the coil transport container 7 is laterally openable and closable. The bottom 13 of the coil transport container 7 also has the through hole 12 at a central location. The two through holes 12, 14 are here formed circular and are positioned so as to the turning unit 4 in the device 1, that they lie in Rotationsachsrichtung in alignment. The untwisting unit 4 can be pushed into its basic position with retracted arms 24 through the through holes 12, 14 in the coil transport container 7, and later pulled out in the opposite direction again.

Fig. 5 shows the device 1 from Fig. 1 this time with an inserted bandcoil 3.

The Aufdreheinheit 4 is here in its basic position with retracted arms 24. The circumferentially extending inner side 8 of the band coil 3, sometimes called Coilauge, here is the lateral surface 17, and thus the shields 18, approximately parallel. In this position, the Aufdreheinheit 4 is still the distance between the Bandcoilinnenseite 8 and the shields 18. The band coil 3 is here with a coil side 28 on the friction reduced surface 27 of the transport pallet 15. The untwisting unit 4 does not rotate here.

Fig. 6 now shows the turning unit 4 with the arms 24 after their rotation in a maximum radially extended position. The booms 24 have just stopped rotating, but still press the now unwound band coil 29 from the Bandcoilinnenseite 30 forth against the inner wall 31 of the coil transport container. 7

Fig. 7 shows the untwisting unit 4 with the arms 24 again in the retracted basic position together with the now unwound belt coil 29. As can be seen, sufficient space has now been created in the radial direction between the turning unit 4 and the inside 30 of the wound-up band coil 29 to another Bandcoil 3, or several more Bandcoils at once, to insert into the device 1, or more accurately, with the Bandcoilinnenseite 8 to position the Aufdreehenheit 4 around and subsequently also open this new Bandcoil 3.

Fig. 8 shows a single, still untwisted Bandcoil 3 with its Bandcoilinnenseite 8, its outer coil coil side 32 and its inner diameter D1.

Fig. 9 shows a multi-part band coil 2, for example a PUP coil, which has been shaped by the device 1. The individual band coils are in this case pushed into each other by the turning unit 4 and pressed into each other. The inner diameter D2 of the multi-part band coil 2 is in this case at least equal to the outer diameter of the lateral surface 17 of the revolving unit 4.

In one possible embodiment, the band coils 3, 29 are made of metal. In another possible embodiment, the band coils 3, 29 are made of steel. For example, the band coils 3, 29 of so-called CRGO ("cold-rolled grain-oriented steel"). In one embodiment, the band coils 3, 29 are surface-coated electrical sheets, for example coated with a film containing magnesium and glass.

In one possible embodiment, the individual band coils 3, 29 unwound have a length in the range of 2m to 30m, in particular in the range of 5m to 25m.

In another possible embodiment, the bands of the band coils have a thickness in the range of 0.1 mm to 0.5 mm, in particular in the range of 0.2 mm to 0.4 mm.

In one possible embodiment, a multi-part band coil molded according to the invention has a weight in the range from 10 kg to 500 kg, in particular a weight in the range from 50 kg to 300 kg.

All of the aforementioned embodiments can furthermore be combined as desired with one another to form further embodiments.

In another possible embodiment, not shown here, the coil transport container 7 can also be omitted. The band coil 3 is then, for example, on the transport pallet 15 and is radially surrounded only by the support frame or other radially surrounding structure, which then serves, for example, as a delimiting structure for the multi-part band coil 2 to be formed.

In a further possible embodiment, not shown here, a limiting structure can also be omitted.

In another possible, not shown, embodiment, the band coil 3 can be positioned on a turntable and the turntable are rotated. Optionally, a limiting structure can rotate with the turntable. The turning unit 4 further has controllable radially extendable boom, but rotates in this embodiment, not or at a different rotational speed than the turntable with the band coil 3. Thus, also a relative rotation between Bandcoil 3 and turning unit 4 are generated, and according to the invention a radial force the Aufdreheinheit be exercised against the Bandcoilinnenseite 8, so that a band coil turns up.

For a better understanding, the mode of operation of the device from the figures and the method will be explained in more detail below.

For the sake of simplicity, the function will be explained below with the successive untwisting of individual band coils 3, although several band coils can be turned on at the same time.

At the beginning of forming a multi-part band coil 2, a worker, for example by hand, takes a bandcoil 3 as in FIG Fig. 8 shown and inverts it with his Coilauge on the mandrel-shaped Aufdreheinheit 4, which in this case is in its basic position with retracted arms 24, as in Fig. 1 shown.

The conically tapered free end 11 of the turning unit 4 helps to put the band coil 3 over the turning unit 4, so that the band coil 3 with its inside 8 positioned around the turning unit 4 on the transport pallet 15 of the container 7 comes to a halt, as in Fig. 5 is shown. The transport pallet 15 is here provided with the friction-reducing coating 27, so that the friction between the edges of the band coil 3 and the transport pallet 15 remains as low as possible and the band coil 3 can be turned on easily. Subsequently, the movable part of the hydraulic cylinder is moved by the hydraulic pump 22, retracted here, whereby the scissor mechanisms 19 simultaneously extend radially from the basic position and start the shields 18 to press radially against the Bandcoilinnenseite 8. At least when at least one of the shields 18 comes into contact with the Bandcoilinnenseite 8, the untwisting unit 4 is rotated by the electric motor and the worm gear 23 in rotation.

For example, a worker can select the direction of rotation of the turning unit 4 on the drive and control unit 6 in such a way that the shields 18 rotate along the inner edge 33 of the coil 3 of the coil winding in order to simply unscrew the band coil 3. For a bandcoil like in FIG. 8 shown, this would be clockwise.

During rotation of the turning unit 4, the radius r of the boom is increasingly increased and thereby the inner diameter D1 of the band coil 3 is steadily increased. The radial outer surfaces 34 of the shields 18 press in this case in the radial direction at several points simultaneously against the Bandcoilinnenfläche 8 and slide simultaneously with friction on the Bandcoilinnenfläche 8 along. As a result, the bandcoil inner surface 8 experiences a rotational force which, together with the radial force, causes the bandcoil 3 to be turned up. The pressing rotation process is continued until the arms 24 reach their maximum extended position.

In the present embodiment, the boom 24 press in its maximum extended position the now wound up band coil 29 (previously referred to as band coil 3) against the inner wall 31 of the coil transport container 7. This inner wall 31 of the coil transport container acts here as a limiting structure and forms a stop for the Outside 32 of the band coil 29, whereby the band coil 29 is slowed down in comparison to the untwisting unit against rotation or stands still. The inner dimension of the coil transport container 7 defines the outer diameter of the multi-part band coil 2 to be formed.

After the complete unwinding of the band coil 3, the boom 24 go back to its fully retracted home position by pressing the hydraulic cylinder. The Bandcoil 29 now remains in its turned-up position.

Subsequently, more band coils are successively inserted into the device in the manner described and turned up until the multi-part band coil 2 has reached a desired thickness or a desired weight.

Thereafter, the coil transport container 7 is lifted with the lying on the transport pallet 15 multi-part band coil 2 in the vertical direction along the axis of rotation A of the turning unit 4 and the rest of the device 1 and fed further processing processes.

A structurally identical, still empty coil transport container 7 can be subsequently used in the rest of the device. The support frame 5 serves as a holder and guide for the coil transport container. 7

The coil transport container 7 with the shaped multi-part band coil 2 can be further opened after removal from the turning unit 4 on one side, the multi-part band coil 2 are lifted with the transport pallet 15 from the coil transport container 7 upwards, for example with a forklift, and then packaged ,

• 1. Verfahren zum Formen eines mehrteiligen Bandcoils aus mehreren einzelnen Bandcoils, gekennzeichnet durch
  Positionieren mindestens eines Bandcoils mit seiner Innenseite um eine Aufdreheinheit,
  Rotieren der Aufdreheinheit und des mindestens einen Bandcoils relativ zueinander,
  Drücken der Aufdreheinheit bei relativer Rotation gegen die Innenseite des mindestens einen Bandcoils bis der Innendurchmesser des mindestens einen Bandcoils vergrößert ist.
• 2. Verfahren nach Punkt 1, gekennzeichnet durch
  Positionieren mindestens eines weiteren Bandcoils zwischen der Aufdreheinheit und dem mindestens einen vergrößerten Bandcoil,
  Rotieren der Aufdreheinheit und des mindestens einen weiteren Bandcoils relativ zueinander,
  Drücken der Aufdreheinheit bei relativer Rotation gegen die Innenseite des mindestens einen weiteren Bandcoils bis der Innendurchmesser des mindestens einen weiteren Bandcoils vergrößert ist.
• 3. Verfahren nach einem der vorherigen Punkte, gekennzeichnet durch
  Drücken des mindestens einen weiteren Bandcoils gegen die Innenseite des vergrößerten mindestens einen Bandcoils.
• 4. Verfahren nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass die Aufdreheinheit rotiert, insbesondere um eine vertikale Rotationsachse.
• 5. Verfahren nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass
  die Aufdreheinheit in veränderbaren Radien um eine Rotationsachse rotiert und bei zunehmendem Radius gegen die Innenseite des mindestens einen Bandcoils drückt.
• 6. Verfahren nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass
  eine in der Aufdreheinheit eingeleitete Kraft und/oder Bewegung in eine radiale Druckkraft und/oder Bewegung gegen eine Bandcoilinnenseite umgewandelt wird.
• 7. Verfahren nach Punkt 6, dadurch gekennzeichnet, dass
  die eingeleitete Kraft und/oder Bewegung durch eine Kombination aus Linearaktuator und Scherenmechanismus in eine radiale Kraft und/oder Bewegung umgewandelt wird.
• 8. Verfahren nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass
  mindesten ein radial ausfahrbarer Ausleger der Aufdreheinheit rotiert und dabei mit zunehmendem Radius gegen die Innenseite des mindestens einen Bandcoils drückt.
• 9. Verfahren nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass mehrere radial ausfahrbare Ausleger der Aufdreheinheit rotieren und dabei mit zunehmenden Radien gegen die Innenseite des mindestens einen Bandcoils drücken, insbesondere mit gleichzeitig zunehmenden gleichen Radien.
• 10. Verfahren nach einem der Punkte 8 und 9, dadurch gekennzeichnet, dass alle Ausleger mit gleicher Geschwindigkeit rotieren.
• 11. Verfahren nach einem der Punkte 8 bis 10, dadurch gekennzeichnet, dass die Ausleger in Umfangsrichtung in gleichen Abständen zueinander um die Rotationsachse rotieren.
• 12. Verfahren nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass
  das mindestens eine Bandcoil in radialer Richtung gegen eine Begrenzungsstruktur gedrückt wird.
• 13. Verfahren nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass das mehrteilige Bandcoil auf einem Coiltransportmittel geformt wird, insbesondere in einem Coiltransportbehälter geformt wird.
• 14. Verfahren nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass die Aufdreheinheit während des Formens eines mehrteiligen Bandcoils durch ein Durchgangsloch im Boden eines von der Aufdreheinheit abnehmbaren Coiltransportmittels hindurchragt, insbesondere durch ein Durchgangsloch im Boden eines von der Aufdreheinheit abnehmbaren Coiltransportbehälters in den Coiltransportbehälter hineinragt.
• 15. Verfahren nach einem der Punkte 13 bis 14 abhängig von Punkt 12, dadurch gekennzeichnet, dass das Coiltransportmittel die Begrenzungsstruktur aufweist, insbesondere die Begrenzungsstruktur Teil einer Seitenwandung des Coiltransportbehälters ist.
• 16. Verfahren nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass die Aufdreheinheit gemäß einem der Vorrichtungsansprüche 1 bis 12 ausgebildet ist.
• 17. Verfahren nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass es mit einer Vorrichtung gemäß einem der Vorrichtungsansprüche durchgeführt wird.

Possible variants of a method according to the invention are summarized again below:

• 1. A method for forming a multi-part band coils of several individual band coils, characterized by
  Positioning at least one band coil with its inside about a turning unit,
  Rotating the turning unit and the at least one band coil relative to each other,
  Pressing the turning unit in relative rotation against the inside of the at least one band coil until the inner diameter of the at least one band coil is increased.
• 2. The method according to item 1, characterized by
  Positioning at least one further band coil between the unwind unit and the at least one enlarged band coil,
  Rotating the turning unit and the at least one further band coil relative to one another,
  Press the turning unit in relative rotation against the inside of the at least one further band coil until the inner diameter of the at least one further band coil is increased.
• 3. Method according to one of the preceding points, characterized by
  Press the at least one other band coil against the inside of the enlarged at least one band coil.
• 4. The method according to one of the preceding points, characterized in that the turning unit rotates, in particular about a vertical axis of rotation.
• 5. Method according to one of the preceding points, characterized in that
  the turning unit rotates in variable radii about an axis of rotation and presses with increasing radius against the inside of the at least one band coil.
• 6. Method according to one of the preceding points, characterized in that
  a force introduced in the turning unit and / or movement is converted into a radial compressive force and / or movement against a Bandcoilinnenseite.
• 7. The method according to item 6, characterized in that
  the introduced force and / or movement is converted by a combination of linear actuator and scissor mechanism into a radial force and / or movement.
• 8. Method according to one of the preceding points, characterized in that
  at least one radially extendable boom of the turning unit rotates and presses with increasing radius against the inside of the at least one band coil.
• 9. The method according to any one of the preceding points, characterized in that a plurality of radially extendable boom rotate the Aufdreheinheit and press with increasing radii against the inside of the at least one band coil, in particular with the same same increasing radii.
• 10. The method according to any one of items 8 and 9, characterized in that all the arms rotate at the same speed.
• 11. The method according to any one of items 8 to 10, characterized in that the arms rotate in the circumferential direction at equal distances from each other about the axis of rotation.
• 12. The method according to one of the preceding points, characterized in that
  the at least one band coil is pressed in the radial direction against a limiting structure.
• 13. The method according to any one of the preceding points, characterized in that the multi-part band coil is formed on a coil transport means, in particular in a coil transport container is formed.
• 14. The method according to one of the preceding points, characterized in that the untwisting unit protrudes through a through hole in the bottom of a detachable from the turning unit coil transport means, in particular protrudes through a through hole in the bottom of a detachable from the turning unit Coiltransportbehälters in the coil transport container during the molding of a multi-part band coil ,
• 15. The method according to any one of items 13 to 14 depending on point 12, characterized in that the coil transport means has the limiting structure, in particular the limiting structure is part of a side wall of the coil transport container.
• 16. The method according to any one of the preceding points, characterized in that the untwisting unit is formed according to one of the device claims 1 to 12.
• 17. Method according to one of the preceding points, characterized in that it is carried out with a device according to one of the device claims.

1. 1. Vorrichtung (1) zum Formen eines mehrteiligen Bandcoils (2) aus mehreren einzelnen Bandcoils (3), gekennzeichnet durch
   eine Aufdreheinheit (4), wobei ein Bandcoil (3) mit seiner Bandcoilinnenseite (8) um die Aufdreheinheit (4) positionierbar ist,
   wobei die Vorrichtung (1) dazu eingerichtet ist, eine relative Rotation zwischen der Aufdreheinheit (4) und einem Bandcoil (3) herbeizuführen,
   und die Aufdreheinheit (4) bei einer relativen Rotation zwischen Aufdreheinheit (4) und Bandcoil (3) eine radial gerichtete Druckkraft gegen eine Bandcoilinnenseite (8) ausüben kann.
2. 2. Vorrichtung (1) nach Punkt 1, dadurch gekennzeichnet, dass
   die Vorrichtung (1) eine in radialer Richtung zur Aufdreheinheit (4) angeordnete Begrenzungsstruktur (16) aufweist, gegen welche die Aufdreheinheit (4) ein Bandcoil (3) von der Bandcoilinnenseite her drücken kann.
3. 3. Vorrichtung (1) nach Punkt 2, dadurch gekennzeichnet, dass
   die Begrenzungsstruktur (16) die Aufdreheinheit (4) in radialer Richtung umfriedet.
4. 4. Vorrichtung (1) nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass die Aufdreheinheit (4) eine Rotationsachse (A) aufweist, und die Aufdreheinheit (4) dazu eingerichtet ist in unterschiedlichen Radien (r) um die Rotationsachse (A) zu rotieren und bei zunehmendem Radius (r) eine radial gerichtete Druckkraft gegen eine Bandcoilinnenseite (8) ausüben kann.
5. 5. Vorrichtung (1) nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass die Aufdreheinheit (4) in einer Grundstellung säulenförmig ausgebildet ist, insbesondere sich an einem freien Ende (11) verjüngt.
6. 6. Vorrichtung (1) nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass die Aufdreheinheit (4) mit ihrer Rotationsachse (A) vertikal ausgerichtet ist.
7. 7. Vorrichtung (1) nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass die Aufdreheinheit (4) einen Kraft- und Bewegungswandelmechanismus (20, 19) aufweist, welcher eine in der Aufdreheinheit (4) in Richtung der Rotationsachse (A) eingeleitete Kraft und/oder Bewegung in eine radiale Druckkraft und/oder Bewegung der Aufdreheinheit (4) überführt.
8. 8. Vorrichtung (1) nach Punkt 7, dadurch gekennzeichnet, dass der Kraft- und Bewegungswandelmechanismus einen in Rotationsachsrichtung (A) wirkenden Linearaktuator (20) und einen radial wirkenden Scherenmechanismus (19) aufweist.
9. 9. Vorrichtung (1) nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass die Aufdreheinheit (4) mindesten einen ausfahrbaren Ausleger (24) zum Drücken gegen eine Bandcoilinnenseite (8) aufweist, insbesondere mindestens einen ausfahrbaren und rotierbaren Ausleger (24).
10. 10. Vorrichtung (1) nach Punkt 9, dadurch gekennzeichnet, dass der mindestens eine Ausleger (24) an seinem freien Ende einen Schild (18) aufweist, welcher dazu eingerichtet ist, gegen eine Bandcoilinnenseite (8, 30) zu drücken und bei Rotation an einer Bandcoilinnenseite (8, 30) unter Reibung entlang zu gleiten.
11. 11. Vorrichtung (1) nach einem der Punkte 8 bis 10, dadurch gekennzeichnet, dass ein erstes rotationsachsseitiges Ende des Scherenmechanismus (19) stationär angelenkt ist und ein zweites, bewegliches rotationsachsseitiges Ende des Scherenmechanismus (19) an dem Linearaktuator (20) angelenkt ist, und zwei der Rotationsachse (A) abgewandte Enden (25, 26) des Scherenmechanismus (19) an dem Schild (18) angelenkt sind, wobei eines der schildseitigen Enden (25) in Rotationsachsrichtung verschiebbar an dem Schild (18) angelenkt ist.
12. 12. Vorrichtung (1) nach einem der vorherigen Punkte, dadurch gekennzeichnet, dass die Aufdreheinheit (4) mehrere ausfahrbare, vorzugsweise zudem rotierbare, Ausleger (24) aufweist, welche in umfänglicher Richtung um die Rotationsachse (A) der Aufdreheinheit (4) herum angeordnet sind, insbesondere in zueinander gleichen Abständen in umfänglicher Richtung.
13. 13. Vorrichtung (1) nach einem der Punkte 2 bis 12, dadurch gekennzeichnet, dass die Begrenzungsstruktur (16) von der Vorrichtung (1) reversibel lösbar ist.
14. 14. Vorrichtung (1) nach einem der Punkte 2 bis 13, dadurch gekennzeichnet, dass die Begrenzungsstruktur (16) als Teil eines abnehmbaren Coiltransportmittels ausgebildet ist, insbesondere als eine Seitenwandung (16) eines abnehmbaren Coiltransportbehälters (7).
15. 15. Vorrichtung (1) nach Punkt 14, dadurch gekennzeichnet, dass die Aufdreheinheit (4) durch ein Durchgangsloch (12) des abnehmbaren Coiltransportmittels hindurch ragt, insbesondere der Coiltransportbehälter (7) einen Boden (13) und eine Seitenwandung (16) aufweist, und die Aufdreheinheit (4) durch ein Durchgangsloch (12) im Boden (13) des Coiltransportbehälters (7) in den Coiltransportbehälter (7) hineinragt.
16. 16. Vorrichtung (1) nach einem der Punkte 14 bis 15, dadurch gekennzeichnet, dass der Coiltransportbehälter (7) nach oben offen ist.
17. 17. Vorrichtung (1) nach einem der Punkte 14 bis 16, dadurch gekennzeichnet, dass der Coiltransportbehälter (7) seitlich öffenbar und schließbar ist.
18. 18. Vorrichtung (1) nach einem der Punkte 14 bis 17, dadurch gekennzeichnet, dass am Boden (13) des Coiltransportbehälters (7) eine herausnehmbare Transportpalette (15) mit einem Durchgangsloch (14) vorgesehen ist, und das Durchgangsloch (14) der Transportpalette (15) und das Durchgangsloch (12) des Coiltransportbehälters (7) in einer Flucht mit der Rotationsachse (A) der Aufdreheinheit (4) liegen und so dimensioniert sind, dass der Coiltransportbehälter (7) samt Transportpalette (15) in Rotationsachsrichtung (A) von der restlichen Vorrichtung (1) abnehmbar ist.

Possible variants of a device according to the invention are summarized again below:

1. 1. Device (1) for forming a multi-part band coil (2) of a plurality of individual band coils (3), characterized by
   an untwisting unit (4), wherein a band coil (3) with its band coil inside (8) can be positioned around the unwinding unit (4),
   the apparatus (1) being adapted to effect relative rotation between the unwinding unit (4) and a belt coil (3),
   and the turning unit (4) can exert a radially directed compressive force against a tape coil inner side (8) during a relative rotation between the turning unit (4) and the band coil (3).
2. 2. Device (1) according to item 1, characterized in that
   the device (1) has a limiting structure (16) arranged in the radial direction of the turning unit (4) against which the turning unit (4) can press a band coil (3) from the inside of the band coil.
3. 3. Device (1) according to item 2, characterized in that
   the limiting structure (16) encloses the turning unit (4) in the radial direction.
4. 4. Device (1) according to one of the preceding points, characterized in that the turning unit (4) has a rotation axis (A), and the turning unit (4) is adapted to in different radii (r) about the rotation axis (A) rotate and with increasing radius (r) can exert a radially directed compressive force against a Bandcoilinnenseite (8).
5. 5. Device (1) according to one of the preceding points, characterized in that the turning unit (4) is formed in a basic position columnar, in particular at a free end (11) tapers.
6. 6. Device (1) according to one of the preceding points, characterized in that the turning unit (4) is aligned vertically with its axis of rotation (A).
7. 7. Device (1) according to one of the preceding points, characterized in that the turning unit (4) has a force and Bewegungswandelmechanismus (20, 19) which in the Aufdreheinheit (4) in the direction of the axis of rotation (A) initiated force and / or movement into a radial compressive force and / or movement of the turning unit (4).
8. 8. The device (1) according to item 7, characterized in that the force and Bewegungswandelmechanismus acting in Rotationsachsrichtung (A) linear actuator (20) and a radially acting scissors mechanism (19).
9. 9. Device (1) according to one of the preceding points, characterized in that the turning unit (4) has at least one extendable arm (24) for pressing against a Bandcoilinnenseite (8), in particular at least one extendable and rotatable arm (24).
10. 10. The device (1) according to item 9, characterized in that the at least one arm (24) at its free end a shield (18) which is adapted to press against a Bandcoilinnenseite (8, 30) and during rotation to slide along a Bandcoilinnenseite (8, 30) along friction.
11. 11. Device (1) according to any one of items 8 to 10, characterized in that a first rotational-axis-side end of the scissors mechanism (19) is articulated stationary and a second, movable rotationsachsseitiges end of the scissor mechanism (19) is articulated to the linear actuator (20) , and two of the axis of rotation (A) facing away from the ends (25, 26) of the scissors mechanism (19) are hinged to the plate (18), wherein one of the shield-side ends (25) in the axis of rotation slidably hinged to the plate (18).
12. 12. Device (1) according to one of the preceding points, characterized in that the turning unit (4) has a plurality of extendable, preferably also rotatable, arm (24) which in the circumferential direction about the axis of rotation (A) of the turning unit (4) around are arranged, in particular in mutually equal distances in the circumferential direction.
13. 13. Device (1) according to one of the points 2 to 12, characterized in that the limiting structure (16) of the device (1) is reversibly detachable.
14. 14. Device (1) according to any one of items 2 to 13, characterized in that the delimiting structure (16) is formed as part of a removable coil transport means, in particular as a side wall (16) of a removable coil transport container (7).
15. 15. Device (1) according to item 14, characterized in that the turning unit (4) projects through a through hole (12) of the detachable coil transport means, in particular the coil transport container (7) has a bottom (13) and a side wall (16), and the turning unit (4) projects through a through hole (12) in the bottom (13) of the coil transport container (7) into the coil transport container (7).
16. 16. Device (1) according to one of the points 14 to 15, characterized in that the coil transport container (7) is open at the top.
17. 17. Device (1) according to one of the points 14 to 16, characterized in that the coil transport container (7) can be opened and closed laterally.
18. 18. Device (1) according to any one of items 14 to 17, characterized in that at the bottom (13) of the coil transport container (7) a removable transport pallet (15) with a through hole (14) is provided, and the through hole (14) of Transport pallet (15) and the through hole (12) of the coil transport container (7) in alignment with the axis of rotation (A) of the turning unit (4) and are dimensioned so that the coil transport container (7) together with transport pallet (15) in Rotationsachsrichtung (A ) is removable from the rest of the device (1).

Claims (15)

Device (1) for forming a multi-part band coil (2) from a plurality of individual band coils (3), characterized by
an untwisting unit (4), wherein a band coil (3) with its band coil inside (8) can be positioned around the unwinding unit (4),
the apparatus (1) being adapted to effect relative rotation between the unwinding unit (4) and a belt coil (3),
and the turning unit (4) can exert a radially directed compressive force against a tape coil inner side (8) during a relative rotation between the turning unit (4) and the band coil (3). Device (1) according to claim 1, characterized in that
the device (1) has a limiting structure (16) arranged in the radial direction of the turning unit (4), against which the turning unit (4) can press a band coil (3) from the inside of the band coil,
in particular characterized in that the limiting structure (16) surrounds the turning unit (4) in the radial direction. Device (1) according to one of the preceding claims, characterized in that the turning unit (4) has an axis of rotation (A), and the turning unit (4) is adapted to rotate in different radii (r) about the axis of rotation (A) and with increasing radius (r) can exert a radially directed compressive force against a Bandcoilinnenseite (8), and / or
characterized in that the turning unit (4) is formed in a basic position columnar, in particular at a free end (11) tapers, and / or
characterized in that the turning unit (4) is aligned vertically with its axis of rotation (A). Device (1) according to one of the preceding claims, characterized in that the turning unit (4) has a force and movement conversion mechanism (20, 19), which in the Aufdreheinheit (4) in the direction of the axis of rotation (A) initiated force and / or movement into a radial pressure force and / or movement of the turning unit (4), in particular
characterized in that the force and Bewegungswandelmechanismus acting in Rotationsachsrichtung (A) linear actuator (20) and a radially acting scissors mechanism (19). Device (1) according to one of the preceding claims, characterized in that the turning unit (4) has at least one extendable arm (24) for pressing against a Bandcoilinnenseite (8), in particular at least one extendable and rotatable arm (24), and preferably
characterized in that the at least one arm (24) has at its free end a shield (18) which is adapted to press against a Bandcoilinnenseite (8, 30) and during rotation on a Bandcoilinnenseite (8, 30) under friction to glide along. Device (1) according to one of claims 4 to 5, characterized in that a first rotator-side end of the scissor mechanism (19) is articulated stationarily and a second, movable rotationsachsseitiges end of the scissor mechanism (19) is articulated to the linear actuator (20), and two of the axes of rotation (A) facing away from the ends (25, 26) of the scissor mechanism (19) are hinged to the plate (18), wherein one of the shield-side ends (25) in the axis of rotation slidably hinged to the plate (18). Device (1) according to one of the preceding claims, characterized in that the turning unit (4) has a plurality of extendable, preferably also rotatable, arms (24) which are arranged in the circumferential direction about the axis of rotation (A) of the turning unit (4) , in particular in mutually equal distances in the circumferential direction. Device (1) according to one of claims 2 to 7, characterized in that the limiting structure (16) of the device (1) is reversibly detachable, and / or
characterized in that the delimiting structure (16) is formed as part of a detachable coil transport means, in particular as a side wall (16) of a detachable coil transport container (7), preferably
characterized in that the turning unit (4) projects through a through hole (12) of the detachable coil transport means, in particular the coil transport container (7) has a bottom (13) and a side wall (16), and the turning unit (4) through a through hole ( 12) in the bottom (13) of the coil transport container (7) projects into the coil transport container (7). Device (1) according to claim 8, characterized in that the coil transport container (7) is open at the top, and / or
characterized in that the coil transport container (7) is laterally openable and closable. Device (1) according to any one of claims 8 to 9, characterized in that a removable transport pallet (15) with a through-hole (14) is provided on the bottom (13) of the coil transport container (7), and the through-hole (14) of the transport pallet (14). 15) and the through hole (12) of the coil transport container (7) in alignment with the axis of rotation (A) of the turning unit (4) and are dimensioned so that the coil transport container (7) together with transport pallet (15) in Rotationsachsrichtung (A) of the remaining device (1) is removable. Method of forming a multi-part band coil from a plurality of individual band coils, characterized by
Positioning at least one band coil with its inside about a turning unit,
Rotating the turning unit and the at least one band coil relative to each other,
Pressing the turning unit in relative rotation against the inside of the at least one band coil until the inner diameter of the at least one band coil is increased. A method according to claim 11, characterized by
Positioning at least one further band coil between the unwind unit and the at least one enlarged band coil,
Rotating the turning unit and the at least one further band coil relative to one another,
Pressing the turning unit in relative rotation against the inside of the at least one further band coil until the inside diameter of the at least one further band coil is increased, and / or
marked by
Press the at least one other band coil against the inside of the enlarged at least one band coil. Method according to one of the preceding claims, characterized in that
at least one radially extendable arm of the turning unit rotates and presses with increasing radius against the inside of the at least one band coil, and / or
characterized in that a plurality of radially extendable boom rotate the Aufdreheinheit and press with increasing radii against the inside of the at least one band coil, in particular with the same increasing radii, preferably characterized in that all the arms rotate at the same speed. Method according to one of the preceding claims, characterized in that the multi-part band coil is formed on a coil transport means, in particular in a coil transport container is formed, preferably characterized in that the coil transport means has the limiting structure, in particular the limiting structure is part of a side wall of the coil transport container. Method according to one of the preceding claims, characterized in that the untwisting unit is formed according to one of the device claims 1 to 7, and / or characterized in that the method is carried out with a device according to one of the device claims.

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