# Patent

## Title
Reel handling system having a winding shaft which is fastened releasably on one side

## Abstract

The invention relates to a reel handling system for a winder (50), in which bobbins (1) with a material web (2) can be applied, with the result that a plurality of reels (3) which are wound on the bobbins (1) with a material web (2) are produced, having a feed unit (10), in order to transfer a plurality of bobbins (1) to a receiving unit (20), wherein the receiving unit (20) is arranged movably between the feed unit (10) and a transfer station (60), by way of which receiving unit (20) bobbins (1) can be transferred to the winder (50) and reels (3) can be transferred from the winder (50) to the transfer station (60), wherein the transfer station (60) has a holding device (61), to which a winding shaft (62) is fastened releasably on one side, wherein the bobbins (1) can be pushed onto the winding shaft (62) during the movement of the receiving unit (20) in the direction of the transfer station (60).

## Background
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a U.S. National Phase application, under 35 U.S.C. §371, of International Application no. PCT/EP2014/053749, with an international filing date of Feb. 26, 2014, and claims benefit of German Application no. 20 2013 104 910.9 filed on May 13, 2013 and German Application No. 10 2013 108 831.7 filed on Aug. 15, 2013, which are hereby incorporated by reference for all purposes.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a reel handling system for a winder which is impingeable with tubes having a material web, such that a plurality of reels of tubes having a material web wound thereon are created. The invention moreover relates to a method for an aforementioned reel handling system.
2. Background
WO 03/010079 A1 discloses a device in which a material web can be applied onto a rotating tube in a winder. A reel which has a tube with the material web wound thereupon and which may be conveyed away from the winder by a reel handling system is created. It is a significant disadvantage in the prior art that the reel handling system is capable of “processing” or moving, respectively, in each case only one tube or reel, respectively. Moreover, it has proven to be disadvantageous that the device known in the prior art is complex in its construction.
SUMMARY OF THE INVENTION
It is the object of the present invention to avoid the above-mentioned disadvantages and in particular to provide a reel handling system for a winder and a method therefor, such that the productivity of the overall assembly and of the method may be significantly increased.
The object of the present invention is achieved by a reel handling system having all the features of patent claim 1. The mentioned object is furthermore achieved by a method having all the features of patent claim 13 or 14. Potential embodiments of the invention are described in the respective dependent claims.
According to the invention, a reel handling system for a winder which is impingeable with tubes having in each case one material web is proposed, such that a plurality of reels of tubes having in each case one material web wound thereon are created, the reel handling system having an infeed unit for transferring a plurality of tubes to a receptacle unit, wherein the receptacle unit is disposed so as to be movable between the infeed unit and a transfer station by way of which tubes are consignable to the winder and reels are transferable from the winder to the transfer station, wherein the transfer station has a supporting device on which a winding shaft is releasably fastened, on one side, wherein the tubes are capable of being push-fitted onto the winding shaft when the receptacle unit is moved in the direction of the transfer station. It is a significant advantage of the invention that a plurality of tubes which inter alia are impinged by the material webs and in the case of which a multiplicity of reels are thus created can be processed in the reel handling system, on account of which the productivity of the overall assembly may be significantly increased. On account of the simultaneous processing of a plurality of tubes or reels, respectively, the present invention has a winding shaft which is fastened releasably on one side to a supporting device, which is advantageous when push-fitting the tubes when the receptacle unit is moved in the direction of the transfer station. It goes without saying that, on account of the one-sided fastening of the winding shaft, there is also the advantage that the reels which are transferred from the winder to the transfer station can in turn be readily removed from the winding shaft again. Since the winding shaft is fastened on one side, the winding shaft has a free end which faces the infeed unit, wherein the free end is disposed on that side of the winding shaft that is disposed so as to be opposite the one-sided releasable fastening point. By way of this free end the reel handling system according to the invention is capable of push-fitting a plurality of tubes onto the winding shaft or of removing a multiplicity of reels from the winding shaft, respectively, wherein the infeed unit in each case moves in the direction of the transfer station or in the direction of the infeed unit, respectively and conjointly moves the tubes or the reels, respectively. In this way, an automatic changeover of reels may be achieved in a very short time by way of the reel handling system according to the invention, wherein maximum operating speeds in particular in the case of the winder are simultaneously achievable.
Advantageously, the winding shaft in relation to the horizontal axis may be downwardly inclined, such that the winding shaft in relation to the horizontal axis is inclined at an angle α, wherein the angle α in particular is ≦5°. On account of the slightly oblique arrangement of the winding shaft in relation to the horizontal axis or the direction of movement of the receptacle unit, respectively, the winding shaft is driven through the individual tubes which can have the shape of a hollow cylinder. At the same time, there is slight contact between the sleeve face of the obliquely disposed winding shaft and the inside sleeve face of the tube or tubes, respectively, on account of which each tube by means of the friction being created can be imparted additional positioning. As a result, the tubes are positioned on the winding shaft which plays an important part for the winding quality in the winder. For example, it is conceivable for the free end of the winding shaft that faces the infeed unit to be downwardly inclined.
According to the invention it may be provided that the winding shaft has fixing means which serve for fixing the tubes on the winding shaft. Once the tubes have been positioned on the winding shaft it may be advantageous for the tubes to remain in their desired position when the winding shaft is being transferred to the winder. To this end, the fixing means which prevent the tubes from losing their position on the winding shaft are employed.
In one embodiment according to the invention it may be conceivable for example, that the fixing means are tensioning elements which are movable on the winding shaft and which are movable between a deployed state and a retracted state, wherein in particular in the deployed state the tensioning elements extend in a projecting manner from the winding shaft. The tensioning elements may be located on the sleeve face of the winding shaft, for example, wherein the tensioning elements are movable between the deployed and the retracted state by way of a drive. The drive may be integrated in the transfer station. It may be furthermore advantageous that the tensioning elements in the deployed state bear directly in a form-fitting and/or force-fitting manner on the inner sleeve face of the tubes, on account of which reliable fixing of the tubes on the winding shaft is achievable. Furthermore, centering of the tubes on the winding shaft may be achieved by way of the tensioning elements, so that each tube allows for an ideal position on the winding shaft to be achieved, both along the axial extent of the winding shaft as well as along the radial extent of the winding shaft.
In one possible embodiment of the invention the reel handling system may be embodied in such a manner that the winding shaft has an air supply and/or an air extraction, through which air is introducible into and/or extractable from the winding shaft, and on account of which the tensioning elements are movable. Driving the tensioning elements is achieved by introducing air into the air-impingeable winding shaft, wherein the tensioning elements at a defined air pressure are driven to their deployed state and in the event of ventilation the tensioning elements are returned to their retracted state. On account thereof, movement of the tensioning elements may be achieved.
The transfer station may advantageously have at least one check valve so as to maintain the deployed state of the tensioning elements. Maintaining the deployed state of the tensioning elements is therefore of advantage because positional displacement of the tubes is undesirable when the winding shaft is transferred to the winder.
The reel handling system according to the invention may furthermore provide that the supporting device has a bolt which is movable between a locked position and a releasing position, wherein in the locked position the bolt is located in a receptacle of the winding shaft, and wherein the receptacle is embodied as a groove. By way of this design embodiment of the supporting device reliable and releasable fastening of the winding shaft, which is mounted on one side within the reel handling system, to the supporting device may be achieved.
Moreover, the reel handling system according to the invention may be embodied in such a manner that the winding shaft has a further receptacle which is disposed so as to be adjacent to the first receptacle, wherein a gripper element of the winder is introducible into the further receptacle, and wherein the further receptacle in particular is embodied as a groove. The gripper element penetrates the further receptacle and transfers the winding shaft to the winder. On account thereof, exact positioning in the winder is achieved, since the gripper element has a geometry which corresponds to the geometry of the further receptacle and thus ensures that the winding shaft during transfer is located in its required position within the winder.
In order for air to be able to be introduced into the winding shaft and evacuated again from the winding shaft in as reliable a manner as possible during air-impingement and ventilation, it has been demonstrated that the air supply and/or the air evacuation are/is most favorably positioned in the region of the end face of the winding shaft. For example, it is conceivable that a nozzle is introduced into the air supply and/or into the air evacuation during air-impingement and/or ventilation, in order for air-impingement and/or ventilation of the winding shaft to be operated. The air supply may be a bore or a duct within the winding shaft. The air evacuation may correspond to the air supply, notwithstanding that in a further embodiment of the invention the air evacuation is located on the winding shaft so as to be separate from the air supply. Like the air supply, the air evacuation may be a bore, a duct, etc. in the winding shaft, so as to achieve movement of the tensioning elements to their mentioned states.
The invention furthermore includes that the end face is embodied as a multi-edged wedge, in particular that the end face is embodied as a three-edged wedge. The geometrical design embodiment of the end face has the advantage that within the winder there is a counter element which acts on this multi-edged wedge or receives the latter in a form-fitting and/or force-fitting manner, respectively, so that the winding shaft is rotated at a corresponding speed when the material web is being wound. The embodiment of the end face as a multi-edged wedge has the advantage that high torques may be transmitted to the winding shaft within the winder.
The object is moreover achieved by a method having all the features of the independent patent claim 13.
According to the invention a method for transferring a winding shaft of a reel handling system to a winder in which tubes are in each case impinged with one material web is proposed, so that a plurality of reels having in each case one material web wound on the tubes are created, the reel handling system having an infeed unit for transferring a plurality of tubes to a receptacle unit, wherein the receptacle unit is disposed so as to be movable between the infeed unit and a transfer station by way of which tubes are handed over to the winder and reels are handed over from the winder to the transfer station, wherein the transfer station has a supporting device on which the winding shaft is fastened releasably on one side, and the tubes are push-fitted onto the winding shaft when the receptacle unit is moved in the direction of the transfer station, the method being characterized by the following steps:

    
    
        in that ventilation of the winding shaft is performed after the tubes have been impinged on the winding shaft, such that on account of the introduction of air to tensioning elements which are disposed on the winding shaft are deployed and fix the tubes on the winding shaft,
        in that gripper elements of the winder move to the transfer station and receive the winding shaft,
        in that the supporting device is released from the winding shaft, and
        in that the gripper elements transfer the winding shaft to the winder.
    
    


The object is moreover achieved by a method according to all of the features of independent patent claim 14. According to the invention a method for transferring a winding shaft of a reel handling system from a winder to a transfer station is proposed, wherein tubes are impinged with one material web in a winder, so that a plurality of reels having in each case one material web wound on the tubes are created, the reel handling system having an infeed unit for transferring a plurality of tubes to a receptacle unit, wherein the receptacle unit is disposed so as to be movable between the infeed unit and a transfer station, by way of which tubes are handed over to the winder and reels are handed over from the winder to the transfer station, wherein the transfer station has a supporting device on which the winding shaft is fastened releasably on one side, and the tubes are push-fitted onto the winding shaft when the receptacle unit is moved in the direction of the transfer station, the method being characterized by the following steps:

    
    
        in that the winding shaft is moved from the winder to the transfer station by way of gripper elements of the winder,
        in that ventilation of the winding shaft is performed, during which ventilation, on account of air being evacuated from the winding shaft, tensioning elements which are disposed on the winding shaft are retracted into the winding shaft and are released from the tubes in a force-fitting and/or form-fitting manner;
        in that the receptacle unit is moved up to the tubes to the point where contact is established,

the gripper elements are released and removed from the winding shaft.

        It is particularly advantageous that both independent methods can simultaneously transfer a multiplicity of tubes or reels, respectively, without there being any risk of the position of the tubes and/or of the reels being changed. At the same time, on account of the air-based drive of the tensioning elements, reliable fixing and centering of the tubes and of the reels on the winding shaft is achieved. By way of the fastening of the winding shaft on the supporting device, which is releasable on one side, a compact overall assembly of the reel handling system may moreover be achieved, wherein releasing and fastening on only one side of the winding shaft simultaneously shortens, in terms of time or simplifies the method, respectively, when the winding shaft is being transferred.
    
    





BRIEF DESCRIPTION OF THE DRAWINGS
Further advantages, features, and details of the invention may be derived from the following description in which a plurality of exemplary embodiments of the invention are described in detail with reference to the drawings. Here, the features mentioned in the claims and in the description may in each case be relevant to the invention both individually or in any arbitrary combination thereof. In the drawings:
FIGS. 1 to 11 show schematic views of a reel handling system having a winder, an infeed unit, a receptacle unit, a transfer station, a position installation, and a reel discharge, wherein the reel handling system is in various operational states;
FIG. 12 shows a detailed view of the position installation;
FIG. 13 shows an enlarged view according to FIG. 12;
FIG. 14 shows a view A according to FIG. 12;
FIG. 15 shows a view B according to FIG. 12;
FIG. 16 shows a detailed view of the transfer station;
FIG. 17 shows a further view of the transfer station;
FIG. 18 shows a three-dimensional view of a winding shaft of the reel handling system;
FIG. 19 shows an enlarged illustration of a part-region of the winding shaft according to FIG. 18;
FIG. 20 shows a sectional view of the winding shaft according to FIG. 18; and
FIG. 21 shows a schematic view of the winding shaft disposed in the transfer station and of the receptacle unit.



DETAILED DESCRIPTION OF SPECIFIC EMBODIMENTS
FIGS. 1 to 11 schematically show a reel handling system for a winder 50 in which tubes 1 having in each case one material web 2 may be wound. The reel handling system here comprises an infeed unit 10 for transferring a plurality of tubes 1 to a receptacle unit 20. According to FIG. 1, three reels 3 have already been transferred to the receptacle unit 20, wherein the receptacle unit 20 has a first bearing face 23 on which the tubes 1 bear. The tubes 1 here are configured so as to be cylindrical.
The receptacle unit 20 may be moved between the infeed unit 10 and a transfer station 60. The tubes 1 may be transferred to the winder 50 in the transfer station 60, to which further reference will be made in the following. In each case one material web 2 is applied onto each individual tube 1 in the winder 50, and a plurality of reels 3 of tubes 1 having a material web 2 wound thereonto results (cf. FIGS. 3 and 6, for example). The reels 3 are subsequently transferred again from the winder 50 to the transfer station 60 (shown in FIGS. 4 and 5).
A position installation 80 which effects positioning of the tubes 1 on the first bearing face 23 when the receptacle unit 20 is moved in the direction of the transfer station 60 is provided between the transfer station 60 and the infeed unit 10. The position installation 80 is configured in such a manner that positioning of the tubes 1 in a mutually relative manner is performed. The position installation 80 has a sensor unit 100 (illustrated in FIG. 12) wherein the sensor unit 100 checks the tubes 1 passing by as to what extent the tubes 1 correctly bear on the receptacle unit 20 and/or the correct tubes 1 are located on the receptacle unit 20. According to FIG. 12 the sensor unit 100 has a first sensor 110 which checks to what extent the diameter of the tube 1 in relation to a fixedly predetermined maximum diameter is excessive, so as to protect the downstream installation of the reel handling system. If the measured diameter of the tube 1 actually is larger than a memorized maximum diameter, the reel handling system is shut down.
The second sensor 120 checks to what extent the actual diameter of the tube 1 corresponds to a predetermined value within the reel handling system. For example, it is conceivable for the machine operator of the reel handling system to beforehand enter the value of the tube 1 in terms of its diameter. Subsequently a comparison between the measured diameter of the tube 1 and the previously entered diameter value is performed by way of the measurement of the second sensor. The sensor unit 100 which is disposed on the position installation 80 may thus also establish to what extent a tube 1 is missing, this likewise leading to the reel handling system being shut down. A wiper element 81, which according to the present exemplary embodiment is flexible and may be configured from spring steel, is located between the two sensors 110, 120. The position installation 80 furthermore has an adhesive bonding device 90 which is disposed in the direction toward the transfer station 60.
It is shown in FIGS. 12 to 15 that the receptacle unit 20 has positioning means 24 for aligning the tubes 1 in the receptacle unit 20 by means of the position installation 80. The first bearing face 23 of the receptacle unit 20 here has tray elements 26 which are at least partially adapted to the geometrical shape of the tubes 1. The tray elements 26 are mutually spaced apart, wherein the positioning means 24 project in a protruding manner from the bearing face 23; this can be particularly clearly seen from FIGS. 13 to 15. According to the present exemplary embodiment the positioning means 24 are configured in a disk-like manner, wherein the positioning means 24 are embodied as metallic disks which are disposed on the sides of the tray elements 26.
When the tubes 1 are transferred from the infeed unit 10 to the receptacle unit 20 (cf. FIG. 10), the tubes 1 according to FIG. 12 are in each case located on one or a plurality of positioning means 24, on account of which the tubes 1 have an oblique orientation on the first bearing face 23 of the receptacle unit 20; this can be clearly seen in FIG. 12. Should there now be movement of the receptacle unit 20 from the position according to FIG. 1 in the direction of FIG. 2, the wiper element 81 will contact each obliquely disposed tube 1, such that the tube 1 is taken from its oblique orientation and is pushed onto the bearing face 23 of the receptacle unit 20, on account of which first positioning 5 of the tubes 1 is performed. According to FIG. 12 the right-hand tube 1 has already been positioned above the wiper element 81, wherein the tube 1 by way of its left-hand region touches the positioning means 24 which is shown in FIG. 13a. The central tube 1 and the left-hand tube 1 are thus also positioned, wherein the receptacle unit 20 having the tubes 1 is simultaneously moved in the direction of the transfer station 60. At the same time, checking of the diameters of the tubes 1 is performed by the sensor unit 100. After first positioning 5 of the tubes 1, application of an adhesive medium onto the sleeve face of each tube 1 is performed by the adhesive bonding device 90. The position installation 80 here may have a temperature-control unit and/or a pressurized unit for applying the adhesive medium onto the tubes 1 according to defined parameters. For example, it is conceivable for the adhesive medium to be a hot-melt adhesive. The adhesive medium performs the function of enabling the material web 2 to be reliably fastened to the sleeve face of the tube 1 in the winder 50.
The tray element 26a according to FIG. 12 has two positioning means 24 which are at the same level and serve as stops for the central tube 1. This is also shown in FIG. 15.
The rearmost tray element 26b has a further positioning means 24 which is elevated in relation to the two positioning means 24. This further locking means 24 serves as a locking element for avoiding tilting during positioning of the left-hand tube 1.
The position installation 80, on which the adhesive bonding device 90 and the sensor unit 100 are integrated, is displaceable, wherein the position installation 80 assumes an operating position 21 (shown in FIG. 12) when the receptacle unit 20 having the tubes 2 is moved in the direction of the transfer station 60 according to FIG. 2. Furthermore, the position installation 80 may be brought to a standby position which is schematically shown in FIGS. 6 and 7 and in which no application of the adhesive medium and/or checking of the diameter of the tubes 1 is required.
According to FIGS. 1 to 11 the transfer station 60 has a supporting device 61 to which a winding shaft 62 is releasably fastened. When the tubes 1 by means of the receptacle unit 20 are moved in the direction of the transfer station 60, the tubes 1 are threaded or push-fitted, respectively, onto the winding shaft 62, so that the tubes 1 reach the position in FIG. 2. The winding shaft 62 on one side is mounted on and fastened to the supporting device 61 (shown in FIGS. 16, 17, and 21). The mounting of the winding shaft 62 is disposed on that side of the supporting device 61 that faces away from the infeed unit 10. The winding shaft 62 in relation to the horizontal axis 4 here is downwardly inclined (schematically shown in FIG. 21). The winding shaft 62 in relation to the horizontal axis 4 is inclined at an angle α, the angle α being less than 5°. The free end 53 of the winding shaft 62 that faces the infeed unit 10 is downwardly inclined. In order for the free end 53 to be able to be initially driven into the hollow tubes 1 when the receptacle unit 20 is moved in the direction of the transfer station 60, a guide element 29 makes for the winding shaft 62 to be briefly placed in the horizontal axis 4. The guide element 29 is disposed on the receptacle unit 20, wherein the guide element 29 may be placed between an active position 27 and a passive position 28, these positions 27, 28 being schematically shown in FIG. 21. In the active position 27 the guide element 29 places the winding shaft 62 in the horizontal axis 4, wherein the winding shaft 62 penetrates the tubes 1. According to the invention it suffices for the winding shaft 62 to have only partially penetrated one or a plurality of tubes when the receptacle unit 20 is moved in the direction of the transfer station 60. The guide element 29 may subsequently be returned to the passive position 28, so that the winding shaft 62 is moved back to its inclined position. On account thereof, a certain level of friction in relation to the inner sleeve face of the tube 1 occurs, the receptacle unit 20 having the tubes 1 being moved farther in the direction of the transfer station 60. The winding shaft 62 here acts on the tubes 1, so that the tubes 1 are in each case finally positioned at a positioning means 24 of the receptacle unit 20, this being a second positioning 6 of the tubes 1 on the first bearing face 23. The tubes 1 here are urged toward the respective positioning means 24, so that each tube 1 comes into contact with its positioning means 24, this corresponding to FIGS. 14 and 15.
According to FIG. 21 the guide element 29 is embodied with a roller element 30 which in the active position 27 rolls on the winding shaft 62. On account thereof, a low level of friction can be achieved with hardly any noise being developed. The roller element 30 may be embodied from a suitable plastics material.
In order for the tubes 1 to remain on the winding shaft 62 in a fixed manner, in particular also within the winder 50, the winding shaft 62 has fixing means 54 (shown in FIGS. 18 and 20). According to the exemplary embodiment illustrated the fixing means 54 are configured as tensioning elements which are movable on the winding shaft 62 and which are movable between a deployed state 55 and a retracted state 56. Fixing of the tubes 1 on the winding shaft 62 is performed in the deployed state 55, wherein the tensioning elements 54 in the deployed state 55 extend in a protruding manner from the winding shaft 62 and thus bear with a defined force on the inner sleeve face of each tube 1. On account thereof, additional centering of the tubes 1 on the winding shaft 62 is performed, in particular since the fixing means 54 are disposed in a uniform manner around the sleeve face of the winding shaft 62 (as is shown in FIG. 18). When the winding shaft 62 having the tubes 1 is transferred to the winder 50 and back from the winder 50 in the direction of the transfer station 60, the fixing means 54 are in their deployed state 55. The drive for moving the tensioning elements 54 to their respective state 55, 56 in the present exemplary embodiment is performed by air which is introduced into the winding shaft 62 via an air supply 57 (schematically shown in FIG. 19). The air supply 57 is axially aligned with the winding shaft 62. According to FIG. 16, the air is introduced via a nozzle 58, wherein the nozzle 58 is initially moved into the air supply 57. By way of the pressure being established within the winding shaft 62 the tensioning elements 54 are driving to the defined deployed state 55. Before the winding shaft 62 is transferred to the winder 50, the nozzle 58 which is disposed on the transfer station 60 is retracted to the position illustrated in FIG. 16. A check valve (not explicitly illustrated) prevents the fixing means 54 departing from the deployed state 55.
According to FIGS. 16 and 17 the supporting device 61 of the transfer station 60 which disposes of a movable bolt 60 which serves as an axial lock for the winding shaft 62, specifically when the winding shaft 62 is located in the supporting device 61 of the transfer station 60, is furthermore shown. High forces may act on the winding shaft 62 in particular when the reels 3 of FIG. 6 are pulled out in the direction of the infeed unit 10 according to FIG. 7. The axial lock 60 is then located in a locked position 59 (cf. FIG. 17), the axial lock 60 in the locked position 59 being located in a receptacle 63 according to FIG. 18. According to the illustrated exemplary embodiment the receptacle 63 is configured as a groove in the winding shaft 62.
Besides the axial lock 60, the supporting device 61 has supporting plates 66, 67 which according to the concept of a bell-crank lever act with a defined force on the winding shaft 62 (schematically shown in FIG. 16). On account thereof, it is achieved that the winding shaft 62 on one side is fastened to the transfer station 60. According to FIG. 19 the winding shaft 62 has a further receptacle 64 which is disposed so as to be adjacent to the first receptacle 63, wherein a gripper element 51 (schematically shown in FIGS. 3 to 5) of the winder 50 is insertable into the further receptacle 64. The further receptacle 54 is likewise embodied as a groove, wherein the gripper element 51 is embodied so as to correspond to the geometry of the receptacle 64 and engages in this receptacle 64 when the winding shaft 62 is moved from the transfer station 60 into the winder 50 and from the winder 50 back to the transfer station 60. During transfer the afore-described supporting device 61 is released, so that the axial lock 60 is separated from the winding shaft 62. This means that the axial lock 60 does not assume the locked position but is located in a releasing position (not explicitly illustrated) in which the bolt 60 is positioned so as to be spaced apart from the winding shaft 62. The supporting plates 66, 67 also do not bear on the winding shaft 62. The winding shaft 62 is merely held by the gripper elements 51.
Once the reels 3 according to FIG. 4 have been transferred to the transfer station 60, an evacuation of the winding shaft 62 during which on account of the venting of air from the winding shaft 62 the tensioning elements 54 are moved into their retracted state 56 is performed. The receptacle unit 20 moves so far up to the reels 3 until contact with the material web 2 is established. Once the reels 3 reliably bear on the receptacle unit 20 the axial lock 60 is brought into its locked position 59, and the supporting plates 66, 67 are moved to their supporting position according to FIG. 16, in which the winding shaft 62 is reliably held and fixed in the supporting device 61. The gripper elements 51 which are movably disposed on the winder 50 may be released from the winding shaft 62 and be driven to a position which is shown in FIG. 8.
In order for the reels 3 to be able to be reliably received by the receptacle unit 20, the receptacle unit 20 has a second bearing face 25 which according to the illustrated exemplary embodiment is able to be moved independently of the receptacle unit 20. While the receptacle unit 20 according to FIG. 4 maintains its position, the receptacle unit 20 has a lifting device for the second bearing face 25, which can move the second bearing face 25 from its position according to FIG. 4 in the direction of the reel 3 according to FIG. 5 until the reel 3 reliably bears on the second bearing face 25. The advantage of two bearing faces 23, 25 which in size and shape are of different configuration is that the geometries of the tubes 1 and of the reels 3 are very different. Moreover, the weight of the reels 3 as compared to the weight of the tube 1 is significantly higher. It is particularly advantageous that the receptacle unit 20 is disposed so as to be rotatable about an axis 31, wherein in one rotational position the first bearing face 32 is active in order for the tubes 1 to be received (for example in FIG. 10). The second bearing face 25 here is deactivated and without function. In a further rotational position of the receptacle unit 20 the second bearing face 25 is active (shown in FIG. 5, for example), so as to reliably receive the reels 3. The first bearing face 23 here is deactivated.
According to FIG. 19 it is furthermore shown that the air supply 57 which simultaneously may also serve as an air extraction during venting is disposed on the end face 65 of the winding shaft 62. The end face 65, as shown in FIG. 18, here is embodied as a three-edged wedge. The three-edged wedge has the advantage that high torques can be accommodated in the winder 50.
According to the illustrated exemplary embodiment according to FIG. 19 the winding shaft 62 has a tilt protection which is implemented in the form of a pendulum bearing 68 which is movably disposed at the periphery of the winding shaft 62. The pendulum bearing 68 is embodied from a plastics material and may prevent tilting of the winding shaft 62 when flexing occurs in the winding shaft 62.
If and when the receptacle unit 20 having the reels 3 has arrived at the position according to FIG. 7, the receptacle unit 20 rotates about the axis 31. The second bearing face 25 in particular rotates about the axis 31, wherein the reels 3 are infed to a reel discharge 130 (cf. FIG. 9). The next cycle for adding tubes commences, wherein according to FIG. 10 the infeed unit 10 approaches the receptacle unit 20 and further tubes 1 are infed to the first bearing face 23. The infeed unit 10 has a singularizing element 11 which effects that only one tube 1 is infed to the receptacle unit 20 from a duct 12 of the infeed unit 10. Advantageously, all functional units of the reel handling system, in particular the infeed unit 10, the singularizing elements 11, the receptacle unit 20 having its bearing faces 23, 25, the guide element 29, the transfer station 60, the supporting device 61, the fixing means 54, the axial lock 60, the supporting plates 66, 67, the position installation 80, and the reel discharge 130 are electronically interconnected by a controller unit so that a mutual exchange of data may take place. On account thereof, the reel handling system may be further optimized in terms of efficiency. The winder 50 may also communicate data with the controller unit; the controller unit may in particular be integrated in the winder 50. Moreover, the infeed unit 10 is configured in such a manner that the ducts 12 according to FIG. 1 or FIG. 2 in terms of their width are adjustable to the geometry of the tube 1; it is in particular conceivable for the infeed unit 10 to be further configured in such a manner that the number of ducts may be varied.
The exemplary embodiment of the reel handling system shown is particularly advantageous since on account of the arrangement of the individual functional units the winder 50 is accessible and visible to the operator (shown by the arrows according to FIG. 1). This is achieved inter alia in that the supporting device 61 is laterally disposed, so as to be opposite the infeed unit 10 or the reel discharge 130, respectively, wherein the winding shaft 62 on one side is releasably held on the supporting device 61.
While the material webs 2 are applied onto the tubes 1 in the winder 50, a reel 3 having in each case one material web 2 is created, wherein the material webs 2 are applied onto various tubes 1 which lie beside one another. The reels 3 are subsequently returned to the transfer station 60. Prior to the material web 2 being applied onto the tube 1, the material web 2 advantageously has a larger width than the direction of extent of the tube 1. This unfinished material web (not explicitly shown) in an upstream step is separated to form the individual material webs 2, this being performed by either a cutting blade or a cutting disk. The step of separating may be performed within the winder 50, for example.
The gripper elements 51 which act laterally on the winding shaft 62 in terms of their length may be driven in or out in a translatory manner and be pivoted about a defined axis, this being schematically shown in FIGS. 3 to 5 or FIG. 8, respectively. On account thereof, the winding shaft 62 can be positioned in a precisely targeted manner.
LIST OF REFERENCE SIGNS


    1 Tube
    2 Material web
    3 Reel
    4 Horizontal axis
    5 First positioning
    6 Second positioning
    10 Infeed unit
    11 Singularizing element
    12 Duct
    20 Receptacle unit
    21 Operating position
    22 Standby position
    23 First bearing face
    24 Positioning means
    25 Second bearing face
    26 Tray element
    27 Active position
    28 Passive position
    29 Guide element
    30 Roller element
    31 Axis of the receptacle unit
    50 Winder
    51 Gripper element
    53 Free end
    54 Fixing means, tensioning element
    55 Deployed state
    56 Retracted state
    57 Air supply/Air extraction
    58 Nozzle
    59 Locked position
    60 Transfer station
    61 Supporting device
    62 Winding shaft
    63 Receptacle
    64 Receptacle
    65 End face
    66 Supporting plate
    67 Supporting plate
    68 Pendulum bearing
    69 Bolt, axial lock
    80 Position installation
    81 Wiper element
    90 Adhesive bonding device
    100 Sensor unit
    110 First sensor
    120 Second sensor
    130 Reel discharge

## Claims

1. A reel handling system for a winder (50) which is impingeable with tubes (1) having in each case one material web (2), such that a plurality of reels (3) of tubes (1) having in each case one material web (2) wound thereon are created, the reel handling system having an infeed unit (10) for transferring a plurality of tubes (1) to a receptacle unit (20), wherein
the receptacle unit (20) is disposed so as to be movable between the infeed unit (10) and a transfer station (60) by way of which tubes (1) are consignable to the winder (50) and reels (3) are transferable from the winder (50) to the transfer station (60), wherein the transfer station (60) has a supporting device (61) on which a winding shaft (62) is releasably fastened on one side, wherein the winding shaft (62) in relation to the horizontal axis (4) is downwardly inclined, such that the winding shaft (62) in relation to the horizontal axis (4) is inclined at an angle α, wherein the angle α is ≦5°, and wherein the tubes (1) are capable of being push-fitted onto the winding shaft (62) when the receptacle unit (20) is moved in the direction of the transfer station (60).

2. The reel handling system as claimed in claim 1, characterized in that
a releasable fastener of the winding shaft (62) is disposed on that side of the supporting device (61) that faces away from the infeed unit (10).

3. The reel handling system as claimed in claim 2, characterized in that
a free end (53) of the winding shaft (62) that faces the infeed unit (10) is downwardly inclined.

4. The reel handling system as claimed in claim 2, characterized in that
the winding shaft (62) has fixing means (54) which serve for fixing the tubes (1) on the winding shaft (62).

5. The reel handling system as claimed in claim 1, characterized in that
a free end (53) of the winding shaft (62) that faces the infeed unit (10) is downwardly inclined.

6. The reel handling system as claimed in claim 1, characterized in that
the winding shaft (62) has fixing means (54) which serve for fixing the tubes (1) on the winding shaft (62).

7. The reel handling system as claimed in claim 6, characterized in that
the fixing means (54) are tensioning elements (54) which are movable on the winding shaft (62) and which are movable between a deployed state (55) and a retracted state (56), wherein in the deployed state (55) the tensioning elements (54) extend in a projecting manner from the winding shaft (62).

8. The reel handling system as claimed in claim 7, characterized in that
the winding shaft (62) has an air supply (57) and/or an air extraction (57), through which air is introducible into and/or extractable from the winding shaft (62), and on account of which the tensioning elements (54) are movable.

9. The reel handling system as claimed in claim 8, characterized in that
the air supply (57) and/or an air extraction (57) are/is disposed on an end face (65) of the winding shaft (62).

10. The reel handling system as claimed in claim 9, characterized in that
the end face (65) is embodied as a multi-edged wedge.

11. The reel handling system as claimed in claim 7, characterized in that
the transfer station (60) has at least one check valve so as to maintain the deployed state (55) of the tensioning elements (54).

12. The reel handling system as claimed in claim 1, characterized in that
the supporting device (61) has a bolt (69) which is movable between a locked position (59) and a releasing position, wherein in the locked position (59) the bolt (69) is located in a first receptacle (63, 64) of the winding shaft (62), and wherein the first receptacle (63, 64) is embodied as a groove.

13. The reel handling system as claimed in claim 12, characterized in that
the winding shaft (62) has a further receptacle (63, 64) which is disposed so as to be adjacent to the first receptacle (63, 64), wherein a gripper element (51) of the winder (50) is introducible into the further receptacle (63, 64), and wherein the further receptacle (63, 64) is embodied as a groove.

14. A method for transferring a winding shaft (62) of a reel handling system, to a winder (50) in which tubes (1) are in each case impinged with one material web (2), so that a plurality of reels (3) having in each case one material web (2) wound on the tubes (1) are created, the reel handling system having
an infeed unit (10) for transferring a plurality of tubes (1) to a receptacle unit (20), wherein the receptacle unit (20) is disposed so as to be movable between the infeed unit (10) and a transfer station (60) by way of which tubes (1) are handed over to the winder (50) and reels (3) are handed over from the winder (50) to the transfer station (60), wherein the transfer station (60) has a supporting device (61) on which the winding shaft (62) is fastened releasably on one side, wherein the winding shaft (62) in relation to the horizontal axis (4) is downwardly inclined, such that the winding shaft (62) in relation to the horizontal axis (4) is inclined at an angle α, wherein the angle α is ≦5°, and
the tubes (1) are push-fitted onto the winding shaft (62) when the receptacle unit (20) is moved in the direction of the transfer station (60), the method characterized by the following steps:
performing ventilation of the winding shaft (62) after the tubes (1) have been impinged on the winding shaft (62), such that on account of the introduction of air tensioning elements (54) which are disposed on the winding shaft (62) are deployed and fix the tubes (1) on the winding shaft (62),
gripper elements (51) of the winder (50) moving to the transfer station (60) and receiving the winding shaft (62),
the supporting device (61) releasing from the winding shaft (62), and
the gripper elements (51) transferring the winding shaft (62) to the winder (50).

15. A method for transferring a winding shaft (62) of a reel handling system, from a winder (50) to a transfer station (60), wherein tubes (1) are impinged with one material web (2) in a winder (50), so that a plurality of reels (3) having in each case one material web (2) wound on the tubes (1) are created, the reel handling system having
an infeed unit (10) for transferring a plurality of tubes (1) to a receptacle unit (20), wherein the receptacle unit (20) is disposed so as to be movable between the infeed unit (10) and a transfer station (60) by way of which tubes (1) are handed over to the winder (50) and reels (3) are handed over from the winder (50) to the transfer station (60), wherein the transfer station (60) has a supporting device (61) on which the winding shaft (62) is fastened releasably on one side, wherein the winding shaft (62) in relation to the horizontal axis (4) is downwardly inclined, such that the winding shaft (62) in relation to the horizontal axis (4) is inclined at an angle α, wherein the angle α is ≦5°, and
the tubes (1) are push-fitted onto the winding shaft (62) when the receptacle unit (20) is moved in the direction of the transfer station (60), the method characterized by the following steps:
moving the winding shaft (62) from the winder (50) to the transfer station (60) by way of gripper elements (51) of the winder (50),
performing ventilation of the winding shaft (62), during which ventilation, on account of air being evacuated from the winding shaft (62), tensioning elements (54) which are disposed on the winding shaft (62) are retracted into the winding shaft (62) and are released from the tubes (1) in a force-fitting and/or form-fitting manner;
moving the receptacle unit (20) up to the tubes (1) to the point where contact is established,
releasing and removing the gripper elements (51) from the winding shaft (62).