EP2694415B1 - Method and device for switching winding shafts - Google Patents

Description

The invention relates to a method and a device for changing winding shafts.

Winding devices are used for winding web-like materials on freely rotatable winding shafts to ready-made roles. As winding devices, so-called backward support roll winder are known. A backward roller winder is a winder in which the winding material is mainly transported in a certain direction, but also deflected in the transport and transported a piece in the opposite direction.

A backward carrier roll winder is known for winding web-shaped materials into rolls on a winding shaft, which has a first pair of carrier rolls on which the winding shaft is arranged during a winding process (US Pat. DE 10 2008 018 890 A1 ). This first support roller pair is arranged on a pivotable support frame. After the roll of sheet material has reached a defined size, the support frame is pivoted, whereby the roll is moved to a second adjacent pair of support rollers. The transport of the roll from the first support roller pair to the second support roller pair is thus effected by a tilting movement. The role of web-like material is wound in this reverse-carrying roller winder against the direction of the web material, ie "backwards".

However, this tilting motion is a high load on the reverse roll wrapper because the roll practically falls on the second roll pair, thus subjecting the reverse roll wrapper to strong vibrations during roll conveyance. With the movable support frame, the back-up support roll winder further has a movable device which is complicated in structure and susceptible to failure, so that the back-up support roll winder must be frequently maintained.

The object of the present invention is to provide a method for changing winding shafts, in which a finished wound winding shaft within the backward support roller winder is replaced with an unwound winding shaft, without that the back-roller winder is exposed during the transport of the roller vibrations.

This object is achieved according to the features of patent claim 1.

The invention thus relates to a back-roller winder for winding web-like materials into rolls. In addition, with the backward roller winder, a roll change can be performed without interrupting the winding process. The back-up winder has a first pair of support rollers and a support roller disposed above the first pair of support rollers which rests on the roller almost throughout the winding process. In addition, a second support roller pair is provided, which serves to receive the finished wound roll. This second support roller pair can be moved horizontally away from the first support roller pair, so that a gap is created between the two support roller pairs, through which a second winding shaft is guided in order to arrive with the web-like material between the two support rollers of the first support roller pair.

A good winding quality and a high winding speed are obtained in particular by a support roller is arranged on a winding shaft with the roll of web material arranged thereon almost continuously, that is from the beginning of the winding process until the wound roll on the adjacent second pair of support rollers. This support roller thus presses almost during the entire winding process, the web-like material firmly on the winding shaft.

It is advantageous that during the winding process, a full winding shaft can be replaced by an empty winding shaft without the winding process must be interrupted. When the roll of web-shaped material has reached a predetermined size, the roll is transported from the first pair of support rollers to the second pair of support rollers by means of a transport device horizontally movable in the rearward support roller. Tilting of the first pair of support rollers is not required, whereby the rearward support roller winder is not subject to vibration when the roller is moved onto the second pair of support rollers.

The transport device has two opposing, oppositely rotating guide systems on which a plurality of pairs of guide rods are arranged. These guide systems may be rail systems or endless belts. Such endless belts are from the EP 0 093 301 B1 known. The pairs of guide rods consist of two parallel guide rods. They can be moved horizontally along the associated guide system in the reverse roll wrapper. These guide rod pairs serve to hold one end of a winding shaft, so that between two opposite pairs of guide rods, a winding shaft can be arranged. Thus, if the pair of guide rods, between which a winding shaft is arranged, is moved along the corresponding guide system, the winding shaft with the roller arranged thereon is also moved. Once the roll of sheet material has been moved by means of the transport device on the second support roller pair, the roller is moved away from the first support roller pair. Between the first and the second pair of support rollers thus creates a gap through which a previously provided new and empty winding shaft moves and can be placed on the first support roller pair. The empty winding shaft comes into contact with the underside of the web-shaped material. Once the empty winding shaft has been placed on the first pair of support rollers, the support roller is arranged above the new winding shaft, being between the first support roller pair and the new winding shaft and the platen roller and the winding shaft web-shaped material. The new winding shaft is held by two opposite pairs of guide rods of the transport device. It can then be separated by means of a cross-cutting device, the sheet-like material from the finished roll, so that the finished roll can be removed from the rear-roller winder. The web-shaped material is then wound onto the newly provided winding shaft, wherein the support roller rests on the new winding shaft from the beginning. As a result, the roll has a high quality, because there is no play between the individual windings of the roll.

It is also advantageous that a very robust and simply constructed transport device is provided, by means of which a roll of web-like material is transported from the first support roller pair to the second support roller pair. Thus, the back-roller winder has a long service life because it has no pivoting devices has that are prone to failure and where the maintenance is associated with a lot of effort.

• Figur 1 eine perspektivische Ansicht eines Rückwärts-Tragwalzenwicklers zum Aufwickeln von bahnförmigen Materialien;
• Figuren 2a bis 2g den schematischen Ablauf eines Wickelwellenwechsels;
• Figur 3 einen Schnitt entlang A-A durch den in Figur 1 dargestellten Rückwärts-Tragwalzenwickler;
• Figur 3a einen vergrößerten Ausschnitt des in Figur 3 dargestellten Rückwärts-Tragwalzenwicklers;
• Figur 4 eine schematische Darstellung einer Transportvorrichtung für den Transport einer Rolle aus bahnförmigem Material in dem Rückwärts-Tragwalzenwickler;
• Figur 5 eine weitere Ansicht des in Figur 3 gezeigten Rückwärts-Tragwalzenwicklers;
• Figur 6 eine weitere Ansicht des in Figur 5 gezeigten Rückwärts-Tragwalzenwicklers;
• Figur 7 eine weitere Ansicht des in Figur 6 gezeigten Rückwärts-Tragwalzenwicklers;
• Figur 7a einen vergrößerten Ausschnitt des Rückwärts-Tragwalzenwicklers gemäß Figur 7;
• Figur 7b einen vergrößerten Ausschnitt des Rückwärts-Tragwalzenwicklers gemäß Figur 7;
• Figur 8 eine weitere Ansicht des in Figur 7 gezeigten Rückwärts-Tragwalzenwicklers;
• Figur 9 eine weitere Ansicht des in Figur 8 gezeigten Rückwärts-Tragwalzenwicklers;
• Figur 10 eine weitere schematische Darstellung der Transportvorrichtung für den Transport einer Rolle aus bahnförmigen Material.

An embodiment of the invention is illustrated in the drawings and will be described in more detail below. Show it:

• FIG. 1 a perspective view of a rear-roller winder for winding web-shaped materials;
• FIGS. 2a to 2g the schematic sequence of a winding shaft change;
• FIG. 3 a section along AA through the in FIG. 1 illustrated reverse roll wrappers;
• FIG. 3a an enlarged section of the in FIG. 3 illustrated reverse roll wrapper;
• FIG. 4 a schematic representation of a transport device for the transport of a roll of sheet-like material in the back-up Winder roller;
• FIG. 5 another view of the in FIG. 3 shown backward-carrying roller;
• FIG. 6 another view of the in FIG. 5 shown backward-carrying roller;
• FIG. 7 another view of the in FIG. 6 shown backward-carrying roller;
• Figure 7a an enlarged detail of the rear-roller drum winder according to Figure 7;
• FIG. 7b an enlarged detail of the rear-roller drum winder according to Figure 7;
• FIG. 8 another view of the in FIG. 7 shown backward-carrying roller;
• FIG. 9 another view of the in FIG. 8 shown backward-carrying roller;
• FIG. 10 a further schematic representation of the transport device for the transport of a roll of sheet material.

FIG. 1 shows a reverse roll wrapper 1 for winding web-shaped materials into ready-made rolls. The reverse carrying roller winder 1 has two opposite side sections 3, 4 which are attached to a frame 2. On the side portion 4, a platform 5 is arranged, on which a control cabinet 6 is, in which the control of the rear-roller winder 1 is located.

The frame 2 consists of two opposite frame sections 7, 8, which are connected to one another via a transverse web 9. In the frame 2, a holding element 10 for a support roller 11 and a discharge bar 12 are arranged with a Kappmesser. The injection strip 12 and the Kappmesser form a cross-cutting device 62, with which the web-shaped material can be separated transversely to the direction of the material. In this case, "direction of movement of the material" is understood to mean the direction from which the material is guided into the rearward support roller winder 1. The Kappmesser the cross cutting device 62 is in FIG. 1 not recognizable.

In each of the opposite frame sections 7, 8 of the frame 2, a rail is provided, which together form a rail system 14. In FIG. 1 However, only the rail 13 of the rail system 14 can be seen, which is arranged in the frame portion 7. In the rail system 14, the support member 10 for the platen roller 11 and the transverse cutting device 62 can be moved independently of each other, ie, moved in the direction of arrows 15 and 16, respectively. The platen roller 11 and the cross cutter 62 can thus be moved vertically and independently in the reverse platen roller 1.

Between the two side sections 3, 4 two juxtaposed support rollers are provided which form a first support roller pair. The first pair of support rollers is stationarily arranged in the rearward support roller winder 1. The two support rollers of the first support roller pair are rotatably arranged in the rearward support roller winder 1. In FIG. 1 However, only the support roller 19 can be seen. Between the first pair of support rollers, a winding shaft 20 is arranged on the already web-shaped material 33 is wound into a winding roll 34. Evident is a transport device 26, which has two opposing guide systems, wherein in the FIG. 1 only the guide system 21 can be seen. By means of this transporting device 26, a winding shaft is held and moved horizontally in the rearward support roller winder 1. Each guide system 21 has a plurality of pairs of guide rods. These pairs of guide rods serve to receive ends of a winding shaft. The pairs of guide rods consist of two mutually parallel rods, which may consist of metal or a metal alloy.

In FIG. 1 It can be seen that one end 58 of the winding shaft 20 is arranged between a pair of guide rods 22. Accordingly, the other end of the winding shaft 20 is arranged in a pair of guide rods, which is arranged on the guide system 21 opposite guide system. In this case, the two pairs of guide rods, in which the ends of the winding shaft 20 are arranged, face each other. Each pair of guide rods in turn forms a guide system in which the winding shaft can be moved in the vertical direction, ie in the direction of the arrows 15 and 16, respectively. Thereby, it is possible that the roller 34 may be larger in web-like material, while their ends are arranged in the opposite pair of guide rods, because with increasing circumference of the roller 34, the winding shaft in the pair of guide rods in the direction of the arrow 16, ie away from the two Carrier rollers is moved.

In addition to this first support roller pair, a second support roller pair 23, 24 is provided, which is part of a movable device 25. This movable device 25 with the two support rollers 23, 24 can be moved along a rail system 27 in the horizontal direction in the rearward support roller winder 1, ie in the direction of the arrows 54 and 55, respectively. The rail system 27 consists of a total of four rails, wherein a pair of rails is provided on each side section 3, 4. In FIG. 1 only the rails 30, 31 of the rail system 27 are visible, which are attached to the side portion 3. The two located in the side portion 4 rails, which are arranged opposite to the pair of rails 30, 31 are in FIG. 1 not to be seen.

Each support roller of the first pair and the second pair of support rollers 19, 23 and 24 and the tension roller 17 has its own drive, by means of which the corresponding support roller 19, 23 and 24 and the tension roller 17 can be rotated about its own axis. In FIG. 1 only the drive 59 can be seen, which is assigned to the support roller 23.

Evident is also a conveyor system 32, can be provided with the new winding shafts. New winding shafts are in the FIG. 1 but not shown for the sake of clarity. At the two opposite side sections 3, 4, in each case a web 63, 64 is attached, on which a protective screen 56 is arranged. This protective shield 56 is located at the end of the reverse roll wrapper where the finished roll rolls are removed from the reverse roll wrapper. The protective shield 56 can be shut down, that is, moved in the direction of the arrow 16, when the reverse carrying roller 1 is in operation. This prevents a person from getting into the system during the operation of the rearward support roller winder 1 and injuring himself there.

The FIGS. 2a to 2g show a schematic structure of a roll change, in which a full winding shaft is replaced during the ongoing winding process by an empty winding shaft.

The web-shaped material 33 is wound on the first support roller pair 18, 19 to a winding roller 34. The role change takes place during the winding process, without the winding process must be interrupted. In this role change a full winding shaft is replaced by an empty winding shaft. The method for changing winding shafts in the reverse carrying roll winder 1 during a running winding process comprises the following steps ( FIGS. 2a to 2g ):

In FIG. 2a is located between the two stationary support rollers 18, 19, the roller 34 of sheet material. On the roller 34 while the platen roller 11 is arranged. Once the roller 34 has reached a defined diameter, the roller 34 by means of in FIG. 2a Transport device 26, not shown, transported to the adjacent second pair of support rollers 23, 24, which is indicated by the arrow 55. The arranged on the roller 34 support roller 11 is thereby removed from the roller 34, which is indicated by the arrow 16.

In FIG. 2b It is shown that the arranged on the first support roller pair 23, 24 roller 34 is moved by means of the transport device in the direction of arrow 55 on the two support rollers 23, 24. Subsequently, the support rollers 23, 24 and the roller 34 arranged thereon are moved away from the two support rollers 18, 19.

In Figure 2c It is shown how the two support rollers 23, 24 were moved away with the roll resting thereon 34 of the support rollers 18, 19, whereby a gap 53 has arisen, through which an empty winding shaft can be performed. This is below of the sheet material 33, an empty winding shaft 52 is provided and moved in the direction of the sheet material 33, which is shown by the arrow 60.

Figure 2d shows the empty winding shaft 52 which is at least partially brought into contact with sheet material 33 in contact. At the same time, the support roller 11 is moved in the direction of the winding shaft 52. The movement of the platen roller 11 is shown by the arrow 15. In this case, further material 33 is wound to the roller 34.

In FIG. 2e the support roller 11 is arranged on the winding shaft 52, wherein between the two support rollers 18, 19 and the winding shaft 52 and the support roller 11 and the winding shaft 52 web-shaped material 33 is located.

In FIG. 2f the cross-cutting device 62 has been moved with the Kappmesser 45 arranged thereon in the direction of the sheet-like material 33 to separate the roller 34 from the material 33. By means of the Kappmessers 45, the web-shaped material 33 between support roller 11 and roller 34 is severed.

Figure 2g shows how after cutting the web-shaped material 33, the cross-cutting device 62 is moved vertically in the backward support roller winder 1 from the winding shaft 52 (see arrow 16). The roller 34 is then removed from the back-up roller winder 1, which is indicated by the arrow 55. The material 33 is wound from now on on the winding shaft 52 into a roll.

Decisive in this role change is that the separating blade 45, the roller 34 can be separated from the web-like material 33 without the winding process must be interrupted, which is achieved by providing a new empty winding shaft 52, and even before the finished roll 34th is separated from the web-shaped material 33.

The high winding speed and the good quality of the roll are achieved in that the roll of sheet material almost throughout the winding process, ie from the beginning of the winding process to the wound roll on the adjacent second pair of support rollers 23, 24, between the first support roller pair 18th , 19 and the platen roller 11 is arranged. This support roller 11 thus presses Almost during the entire winding process, the web-like material on the winding shaft or on the winding shaft arranged on this winding material, whereby imbalances due to non-uniform layers of the sheet material are prevented. Due to the tightly packed winding material, the winding shaft is not exposed to vibrations during operation.

FIG. 3 shows a section along AA through the in FIG. 1 shown backward support roller winder 1 with the winding shaft 20, wherein in the direction B, that is viewed from the left side with respect to a running direction 41 of the sheet material 33 on the rear-roller winder 1. Web-shaped material 33 is wound into a roll 34 around the winding shaft 20. During the winding process, the roller 34 rests on the first support roller pair 18, 19, wherein the winding shaft 20 is disposed between the two opposite pairs of guide rods. In FIG. 3 However, it can only be seen that the winding shaft 20 is inserted with its one end between the two guide rods 68, 69 of the guide rod pair 22 formed as rods. Since continuous web-shaped material 33 is rolled onto the winding shaft 20 during the winding process, the diameter of the roller 34 also steadily increases. With increasing diameter of the roller 34 and the winding shaft 20 within the opposing pairs of guide rods upwards, that is moved within the rearward support roller winder 1 in the vertical direction. In the FIG. 3 the winding shaft 20 has already reached the upper end of the pair of guide rods 22, which means that the roller 34 is soon finished wound.

The guide system 21 of the transport device 26 has two superimposed rail sections 66, 67, which form a closed curve substantially. Accordingly, the guide system 21 opposite the guide system 72, but in the FIG. 3 can not be seen, two such superposed rail lines.

On the two rail sections 66, 67 of the guide system 21, two pairs of guide rods 22 and 74 can be seen. The other pairs of guide rods of the guide system 21 are in FIG. 4 represented and in FIG. 3 not recognizable.

About the transport system 26, the roller 34 can be moved to the two adjacent support rollers 24 and 23. The winding shaft 20 is arranged with its ends between the two opposite pairs of guide rods, as shown in FIG. 4 is shown.

In FIG. 3 the web 34 is located in a valley 29 between the two support rollers 18 and 19. The web-shaped material 33 passes through an infeed frame 35 and a longitudinal cutting device 36 to the rear support roll winder 1. The longitudinal cutting device 36 cuts the material 33 in the longitudinal direction, ie in the running direction of the Materials 33 in several strips. The infeed rack 35 serves to tension the web of material 33 and to guide it with the appropriate train in the rearward support roller winder 1. The inlet frame 35 and the longitudinal cutting device 36 are thus upstream of the back-up roller carrier 1. The slitter 36 is not part of the back-up winder 1, so that this slitter 36 can be easily removed from the back-up winder 1 if necessary, in case the slitter 36 or the back-up winder 1 needs to be serviced. The back-up roller winder 1 is thus easily accessible from all sides.

The inlet frame 35 has a pedestal 37, can stand on the operator 61 so as to be able to adjust the longitudinal cutting device 36 comfortably. The longitudinal cutting device 36 has a plurality of juxtaposed cutting devices, of which in the FIG. 3 only the cutting device 38 with the two cutting tools 39 and 40 can be seen. The longitudinal cutting device 36 may be a conventional longitudinal cutting device or an automatic longitudinal cutting device with different automation levels, for which reason this longitudinal cutting device 36 will not be described in detail.

The sheet-like material 33 is transported via the inlet frame 35 to the slitter 36. Coming from the longitudinal cutting device 36, the web-shaped material 33 runs in the direction of arrow 41, via a first measuring roller 28 to the tension roller 17. In the direction of the material 33 is understood the direction from which the material 33 comes and in the reverse carrying roller winder 1 is guided. From the tension roller 17, the web-shaped material 33 runs via a further measuring roller 42 to the support roller 19. With the two measuring rollers 42, 28, the tensile force is measured.

The stationary first support roller pair is formed by the two support rollers 18 and 19. Each support roller 18 and 19 is over in FIG. 3 not to be seen drives counterclockwise, that is rotated in the direction of arrow 43. As a result, the web-shaped material 33 at least partially runs around the support roller 19. The web-like material 33 is transported on the support roller 19 for a short period of time counter to the direction 41 of the web-like material 33, which is indicated by the arrow 44, before the material 33 the winding shaft 20 is wound to the roller 34 (see FIG. 3a ).

On the roll 34 of sheet material 33 is the support roller 11 which presses the web-shaped material 33 fixed to the roller 34. The roll 34 of sheet material 33 is almost continuous - d. H. from the beginning of the winding process to the displacement of the wound roll 34 on the adjacent second pair of support rollers 23, 24 - disposed between the first support roller pair 18, 19 and the platen roller 11. This support roller 11 presses the web-shaped material 33 onto the winding shaft 20 or onto the winding material arranged on the winding shaft 20, whereby a compact roller 34 of high quality is obtained.

Above the roller 34 and the transverse cutting device 62 is seen consisting of the injection strip 12 with the Kappmesser 45 arranged thereon. With the cross-cutting device 62, the web-shaped material 33 is severed transversely to the direction 41 of the material 33.

The cross-cutting device 62 and the platen roller 11 can be moved independently of each other and vertically in the rear-roller drum winder 1, which is indicated by the two arrows 15 and 16. As a result of this vertical movement, the support roller 11 and the transverse cutting device 62 can be moved in the direction of the two support rollers 18, 19 or moved away from these two support rollers 18, 19.

Adjacent to the first support roller pair 18, 19, the second support roller pair 23, 24 is arranged. This second support roller pair 23, 24 is mounted movably along the rail system 27. These two support rollers 23 and 24 are part of the movable device 25. With respect to the running direction 41, the second support roller pair 23, 24 thus arranged behind the first support roller pair 18, 19. The movable device 25 with the two support rollers 23 and 24 attached thereto can be in the direction of arrows 54 and 55, d. H. be moved horizontally in the reverse roll carrier winder 1.

The below the support rollers 18, 19; 23, 24 arranged conveyor system 32 has three rotatable shafts 47, 48, 70, around which a transport unit 49, for example, a conveyor belt or a chain is arranged. By means of the conveyor system 32 empty winding shafts 52 are provided, which can be placed on the two support rollers 18, 19 when the arranged on the winding shaft 20 roller 34 completed and this roller 34 has been removed from the two support rollers 18, 19. The conveyor system 32 is connected via a conveyor 50 with a storage station 51 in connection. This storage station 51 may comprise at least one empty winding shaft, wherein in the storage station 51, no empty winding shafts are shown. If necessary, empty winding shafts can be transported from the storage station 51 to the conveyor system 32 via the conveyor device 50. In FIG. 3 In addition, a tee bar 57 can be seen, which is arranged below the support roller 19.

Because in FIG. 3 When the reverse carrying roller winder 1 is in operation, the protective shutter 56 has been shut down.

In FIG. 3a is an enlarged section of the in FIG. 3 shown backward support roller winder 1 shown in a schematic representation. Shown is the wound around the winding shaft 20 to the roller 34 web-shaped material 33. The roller 34 of sheet material 33 is on the two support rollers 18 and 19 at least partially and is disposed between the two support rollers 18, 19 and the platen roller 11. During the entire winding process, the support roller 11 presses the web-shaped material 33 firmly against the winding shaft 20 or onto the roller 34, so that a compact roller 34 of sheet-like material 33 of high quality is obtained.

The web-shaped material 33 surrounds the support roller 19 at least partially. In this case, the web-shaped material 33 is moved on the support roller 19 for a short period of time counter to the direction 41 of the web material 33, which is indicated by the arrow 44, because the web-shaped material 33 rests on the support roller 19 and the support rollers 18, 19 counter move clockwise. The support roller 19 can thus also be referred to as a deflection roller because the direction of movement of the web-like material 33 is changed by this support roller 19.

The web-shaped material 33 arranged on the support roller 19 is wound on the winding shaft 20 to the roller 34, wherein the winding shaft 20 and thus also the roller 34 are moved in the clockwise direction, which is indicated by the arrow 46.

FIG. 4 shows a section of the in FIG. 1 shown backward-carrying roller winder 1, wherein the transport device 26, by means of which a roll of web-like material in the rearward support roller winder 1 can be moved horizontally in the direction of arrow 55, is shown schematically. It is looking at the backward-carrying roller winder 1 (see. FIGS. 1 a and 1 b of EP 0 093 301 B1 ).

The transport device 26 comprises two opposite guide systems 21 and 72, which are constructed identically. These guide systems 21, 72 may be rail systems or endless belts. Such endless belts are out EP 0 093 301 B1 known. Both guide systems 21, 72 each form a closed curve. They each have two curve sections 89, 90 and 91, 92. On the two guide systems 21, 72 four guide rod pairs 73, 22, 75, 74 and 76, 78, 79, 77 are arranged. The guide rod pairs 22, 73 to 79 are connected to a drive, for example with a chain drive. With this drive, the pair of guide rods 22, 73 to 79 can be moved along the corresponding guide system 21, 72. Each guide system 21, 72 is assigned a separate drive. The drives are in FIG. 4 but not shown. It is understood that the guide systems 21, 72, the transport device 26 may also have more than four pairs of guide rods. However, at least two pairs of guide rods must be provided so that a roll change can take place without interrupting the winding process. As in FIG. 4 to recognize, it concerns with the two Guide systems 21, 72 to two opposing rotating guide systems. The movement of the pairs of guide rods 22, 73 to 75, which are arranged on the guide system 21, is indicated by the arrow 81 and the movement of the guide rod pairs 76 to 79, which are arranged on the guide system 72 by the arrow 81. The pair of guide rods 22, 73 to 75 attached to the guide system 21 are thus moved counterclockwise and the pairs of guide rods 76 to 79 mounted on the guide system 72 are moved clockwise. The two guide systems 21, 72 with the guide rod pairs 76 to 79 arranged thereon are thus designed mirror-symmetrically. The winding shaft 20 with the roller 34 arranged thereon is arranged with its one end 58 between two guide rods 68, 69 of the guide rod pair 22 and with its other end 82 between the guide rods 83, 84 of the guide rod pair 79. If the two pairs of guide rods 22 and 79 are moved along the corresponding guide system 21 or 72 in the direction of the arrows 80 and 81, then the winding shaft 20 with the roller 34 arranged thereon is moved within the rearward support roller winder 1 in the direction of the arrow 55. Such a transport of a winding shaft in a winding device is per se from the above-mentioned EP 0 093 301 B1 known.

FIG. 5 shows another view of the in FIG. 3 By means of the transport device 26, the winding shaft 20 has been arranged with the roller 34 arranged thereon of web material 33 in the direction of the arrow 55, that is further in the direction of the output of the rear-roller drum winder 1, whereby the winding shaft 20 of the two support rollers 18, 19 was transported to the two adjacent support rollers 23 and 24. The winding shaft 20 is still located between the two guide rods 68, 69 of the guide rod pair 22. Shortly before the transport of the roller 34 to the second pair of support rollers 23, 24, however, the support roller 11 is removed from the roller 34, so that in FIG. 5 the platen roller 11 is no longer in contact with the roller 34. The winding process is not interrupted during the transport of the roller 34 on the two support rollers 23, 24, so that further web-shaped material 33 is wound on the winding shaft 20 to the roller 34. The winding shaft 20 with the winding roller 34 arranged thereon is thus further moved in the clockwise direction 46, ie counter to the running direction 41 of the material 33, ie "backwards". For a brief moment, towards the end of the winding process, so that the support roller 11 is not on the winding roller 34 so that it remains in its old place to burden the next winding shaft from above.

In FIG. 6 is another view of the in FIG. 5 shown reverse reel roller 1 shown at another winding time. In this view, it can be seen that the movable device 25 with the two support rollers 23, 24 rotatably mounted thereon has been moved along the rail system 27 in the direction of the arrow 55. In synchronism, the roll 34 of sheet material 33 has also been moved in the direction of the arrow 55, so that the winding roll 34 during the movement in the direction of the arrow 55 between the two support rollers 23, 24 remains arranged. As a result, a gap 53 is created between the first pair of support rollers 18, 19 and the second pair of support rollers 23, 24.

The two support rollers 23, 24 each have a in FIG. 6 However, not visible to drive, with which the corresponding support rollers 23, 24 are further moved around its own axis. This web-like material 33 is further applied as a roller 34 on the winding shaft 20, while the roller 34 is moved on the two support rollers 23, 24 in the direction of the arrow 55. The rotational movement of the two support rollers 23, 24 is indicated by the arrow 43. The support roller 11 is no longer on the roller 34. As in FIG. 6 can be seen, the winding shaft 20 with the roller 34 disposed thereon is further arranged with one of its ends between the two guide rods 68, 69.

In FIG. 6 It is also shown that below the web-shaped material 33, an empty winding shaft 52 provided by the conveying system 32 is detected by means of a hook-shaped gripping device 85. By means of this gripping device 85, the empty winding shaft 52 can be brought into contact with the underside of the sheet-like material 33 and finally placed on the first support roller pair 18, 19.

In FIG. 7 is another view of the in FIG. 6 shown reverse reeling drum winder 1, and at a later time. While still web-like material 33 is applied to the winding shaft 20 and thus increases the diameter of the roller 34, the provided empty winding shaft 52 is removed from the conveyor system 32 and moved by the gripping device 85 through the gap 53 and above the two support rollers 18, 19 brought into contact with the web-shaped material 33. This is indicated by the arrow 60. The empty winding shaft 52 is thereby attached with its ends between two opposite guide rod pairs of the transport device 26, so that the winding shaft 52 is held with its ends by the two opposite guide rod pairs of the transport device 26. Only the pair of guide rods 74 consisting of the two guide rods 93 and 94 designed as rods can be seen, which holds the winding shaft 52. The rear end of the winding shaft 52 is shown in FIG FIG. 7 not to be seen. The tee bar 57 is now arranged above the support rollers 19. By arranging the knock-over strip 57 above the support roller 19, the support roller 19 is prevented from being damaged by the transverse cutting device 62 when the material 33 is severed therewith.

Thus, the winding shaft 52 in the pair of guide rods 74, d. H. between the two with respect to the running direction 41 of the sheet material 33 successively arranged guide rods 93 and 94, can be introduced, the guide rod 93 must have an opening through which the winding shaft 52 can be moved by the guide rod 93, because the winding shaft 52 laterally is introduced into the pair of guide rods 74.

The same applies to the in FIG. 7 not to be seen guide rod pair 76, which is opposite to the pair of guide rod 74 and in which the winding shaft is introduced.

In Figure 7a an enlarged section of the guide rod pair 74 is shown. In this case, the area is shown, through which an empty winding shaft between the two guide rods 93 and 94 is introduced. The guide rod 93 has an opening 100 through which one end of a winding shaft can be moved therethrough. In this opening, a movable hinge 65 is arranged, which is connected via a spring element 71 with the guide rod 93. If a winding shaft is then introduced into the aperture 100 with one of its ends, then the hinge 65 is moved upwards, which is indicated by the arrow 101. The winding shaft can thus be arranged with its end between the two guide rods 93 and 94. Once the winding shaft between the two guide rods 93 and 94 introduced is, the hinge 65 moves back to the starting position. The movement of the hinge 65 to the starting position is shown by the arrow 102.

In FIG. 7b It is shown how the winding shaft 52 is moved by means of the gripping device 85 with its one end 87 through the opening 100 of the guide rod 93 and can be arranged in the pair of guide rods 74. In this case, the winding shaft 52 pushes the hinge 65 into a gap 103 which is located between the two guide rods 93, 94. Subsequently, the gripping device 85 is removed from the winding shaft 52 again and the winding shaft 52 falls into a lower end 104 of the gap 103. The hinge 65 then moves back to the starting position. Since the hinge 65 is no longer disposed in the gap 103, the winding shaft 52 can be moved vertically in the gap 103. Thus, it is possible that the winding shaft 52 is moved with increasing diameter of the wound on her role of sheet material in the direction of the upper end of the guide rod pair 74, which is indicated by the arrow 16. The hinge 65 prevents the winding shaft 52 from falling out of the pair of guide rods 74 via the aperture 103. The hinge 65 is thus arranged in the opening 100, that although a winding shaft guided from the outside through the aperture 100 and so can be arranged in the intermediate region 103 of the guide rod pair 74, but prevents this winding shaft through the opening 100 again from the intermediate area 103 of the guide rod pair 74 can be moved out.

FIG. 8 shows a further view of the rear-roller winder 1 according to FIG. 7 at a later time.

While the web-shaped material 33 is further applied as a roller 34 on the winding shaft 20, the holding member 10 with the support roller 11 arranged thereon and the cross-cutting device 62 with the injection strip 12 and the Kappmesser 45 vertically in the rearward support roller winder 1 in the direction of newly provided Winding shaft 52 moves, which is indicated by the arrow 15. The support roller 11 is located in FIG. 8 already on the winding shaft 52, wherein between the support roller 11 and the winding shaft 52 already web-shaped material 33 is arranged is. The support roller 11 presses the web-shaped material 33 firmly against the newly provided winding shaft 52.

Since the platen roller 11 exerts pressure on the roll of sheet-like material 33 or on the winding shaft 52 directly at the beginning of the new winding process, it is ensured that the winding process can be started at a very high speed. With the back-up roll winder 1, about 1000 m / min of sheet material 33 can be wound into a roll. In this case, even the first layers of the roll of sheet material 33 have a very high quality, because already at the beginning of the winding process, the support roller 11 rests on the roller.

FIG. 9 shows another view of the in FIG. 8 shown backward roller carrier 1 at a later time. The support roller 11 is arranged on the winding shaft 52 and presses the web-shaped material 33, which is arranged between the support roller 11 and the winding shaft 52, on the winding shaft 52. The cross-cutting device 62 is further in the direction of arrow 15 and thus in the direction of the web-like material 33 has been moved.

The Kappmesser 45 attached to the cross-cutting device 62 is at least partially disposed in the tee strip 57 and presses the web-shaped material 33 against the Abschlagleiste 57. The web-shaped material 33 is severed by the Kappmesser 45. The coming of the inlet frame 35 material 33 is now wound on the winding roller 52, while the separated part of the material 33 is still wound on the winding shaft 20 to the roller 34. After the severed part of the material 33 has been wound on the winding shaft 20, this roller 34 is finished. The finished roll 34 can be removed from the two support rollers 23, 24 and thus from the rearward support roller winder 1. After the finished roll 34 has been removed from the back-up roll winder 1, the second pair of support rolls 23, 24 is returned to the home position, d. H. in addition to the first support roller pair 18, 19 moves.

The web-shaped material 33 is now wound on the winding shaft 52 to a new role. During the winding process, the material 33 surrounds the support roller 19 in turn at least partially, wherein the sheet-like material 33 on the support roller 19 for a short period of time counter to the direction of movement 41 is moved, which is indicated by the arrow 44, because the web-shaped material 33 rests on the support roller 19. By the movement of the two support rollers 18, 19 in the counterclockwise direction 43, the winding shaft 52 is moved in a clockwise direction, which is shown by the arrow 46. The directions of movement of the two support rollers 18, 19 and the winding shaft 52 are opposite, because the support roller 19, the direction of the web-like material 33 changes.

FIG. 10 shows a further schematic representation of the transport device 26 for the transport of the roll 34 of sheet material with the two opposing guide systems 21, 72, this representation with the representation in FIG FIG. 4 is comparable. The arrangement of the roller 34 is shown in the transport device 26, as in FIG. 9 you can see. The new winding shaft 52 is already arranged in the transport device 26. With one end 87, the winding shaft 52 between the guide rods 93, 94 of the guide rod pair 74 and with another end 88 between two guide rods 95, 86 of the guide rod pair 76 is arranged. The winding shaft 20 with the roller 34 arranged thereon has already been moved in the direction of the arrow 55 to the end of the transport device 26. For this purpose, the two opposing pairs of guide rods 22, 79 were moved in opposite directions along the corresponding guide systems 21 and 72 in the direction of the arrows 80 and 81, respectively. The pair of guide rods 22 has reached the curved portion 89 of the guide system 21 and the pair of guide rods 79 the curved portion 92 of the guide system 72. The fact that the pairs of guide rods 22 and 79, the ends 58 and 82 of the winding shaft 20 is no longer surrounded, the winding shaft 20 together with the roller 34 from the Transport device 26 and thus be removed from the Rückwärtsaufragwalzenwickler 1.

In FIG. 10 each guide rods 69, 84, 93 to 99 have a breakthrough with a hinge. However, the hinges are in FIG. 10 not to be seen. Through this breakthrough, an empty winding shaft can be moved so as to be arranged between the corresponding pair of guide rods.

reference numeral

1

Reverse-drum winder

2

frame

3

side portion

4

side portion

5

platform

6

switch cabinet

7

frame section

8th

frame section

9

crosspiece

10

retaining element

11

platen

12

Einstoßleiste

13

rail

14

rail system

15

arrow

16

arrow

17

pulling roller

18

king roll

19

king roll

20

winding shaft

21

guidance system

22

Guide bar pair

23

king roll

24

king roll

25

movable device

26

transport device

27

rail system

28

measuring roll

29

Valley of 18 and 19

30

rail

31

rail

32

conveyor system

33

sheet material

34

role

35

Entry frame

36

Slitter

37

podium

38

cutter

39

cutting tool

40

cutting tool

41

Arrow / direction

42

measuring roll

43

arrow

44

arrow

45

Cutting knife

46

arrow

47

rotatable shaft

48

rotatable shaft

49

transport unit

50

conveyor

51

stocker

52

winding shaft

53

gap

54

arrow

55

arrow

56

shield

57

knock-down bar

58

End of the winding shaft 20

59

drive

60

arrow

61

operator

62

Cross-cutting device

63

web

64

web

65

hinge

66

railway line

67

railway line

68

Corporate Office

69

Corporate Office

70

rotatable shaft

71

spring element

72

guidance system

73

Guide bar pair

74

Guide bar pair

75

Guide bar pair

76

Guide bar pair

77

Guide bar pair

78

Guide bar pair

79

Guide bar pair

80

arrow

81

arrow

82

End of the winding shaft 20

83

Corporate Office

84

Corporate Office

85

gripping device

86

Corporate Office

87

End of the winding shaft 52

88

End of the winding shaft 52

89

curve section

90

curve section

91

curve section

92

curve section

93

Corporate Office

94

Corporate Office

95

Corporate Office

96

Corporate Office

97

Corporate Office

98

Corporate Office

99

Corporate Office

100

perforation

101

arrow

102

arrow

103

gap

104

lower end of 103

Claims (8)

1. Method for changing winding shafts (20, 52) in a support roller winder (1) during an ongoing winding process, characterised by the following steps:

   1.1 an empty first winding shaft (20) is arranged between two fixed support rollers (18, 19) via guide rods (68, 69, 22, 74, 83, 84);

   1.2 the first winding shaft (20) is wound to a specified diameter, so that a finished winding roll (34) is produced;

   1.3 the winding roll (34) is transported by means of two oppositely rotating guidance systems (21, 72) on two horizontally movable support rollers (23, 24);

   1.4 the horizontally moving support rollers (23, 24) are moved synchronously with the wound first winding shaft (20) to the end position of the guidance systems (21, 72);

   1.5 a new and unwound second winding shaft (52) is brought between the fixed and moving support rollers (18, 19, 23, 24) into a position between the fixed support rollers (18, 19).
2. Method according to claim 1, characterised in that the new second winding shaft (52) is brought into contact with the underside of the web-shaped material (33) and the web-shaped material (33) is looped through the new second winding shaft (52) around one roller (19) of the fixed support roller pair (18, 19) until the new second winding shaft (52) comes into position between the two support rollers (18, 19) of the fixed support roller pair (18, 19).
3. Method according to claim 1, characterised in that after winding of the first winding shaft (20), the web-shaped material (33) is severed by means of a transverse cutting device (62).
4. Method according to claim 1, characterised in that, before the horizontal transport of the winding roll (34), a carrying roller (11) is removed from the roll (34).
5. Device for implementation of the method according to claim 1 in a support roller winder (1), wherein two fixed support rollers (18, 19) and two horizontally movable support rollers (23, 24) are provided, characterised in that

   (a) two oppositely and horizontally rotating guidance systems (21, 72) comprise guide rods (68, 69, 22, 74, 83, 84) for the ends (82, 58) of winding shafts (20), such that the ends (82, 58) can move vertically between two guide rods,

   (b) a displaceable device (25) moves the two horizontally movable support rollers (23, 24) synchronously with the rotary guidance systems (21, 72).
6. Device according to claim 5, characterised in that, at the start of the winding process, above the two fixed support rollers (18, 19) guide rods (68, 69, 83, 84) are arranged between which an empty winding shaft (20) is accommodated.
7. Device according to claim 5, characterised in that, at the end of the winding cycle, above the two movable support rollers (23, 24) guide rods (68, 69, 83, 84) are arranged between which a full winding shaft (20) is accommodated.
8. Device according to claim 5, characterised in that, before removing the fully wound winding shaft (20) from the device, the horizontally moving support rollers (23, 24) are at a distance from the fixed support rollers (18, 19), which is essentially the length of the guidance systems (21, 72).

Images