DE102015225914A1 - Apparatus and method for conveying, providing and exchanging rolls of packaging material in a packaging machine - Google Patents

Abstract

It is a device and a method for conveying, providing and / or handling and / or replacement of rolls (12, 16) with flat and / or sheet material wound thereon and used as packaging material for packaging piece goods, containers or similar article compositions disclosed. Used rolls (16) are removed from a packaging machine and replaced with new rolls (12) with flat and / or sheet material. At least one sensor (66) for detecting an axial position of the roller (12, 16) and / or for detecting the spatial positions is at least one of the installation positions (EB1, EB2) of the rollers (12, 16) to be unwound flat and / or sheet material associated with the respective outer layers of the unwound roll (12, 16). The output signals (72) of the sensor (66) are supplied to a control device (74) for generating control signals (76) for the axial adjustment (64) of the receiving mandrel (42) equipped with a roll (12, 16) to be unwound as a function of the detected and processed Sensor signals (72) of the sensor (66) provided.

Description

The present invention relates to a device for feeding, providing, handling and / or replacement of rolls with flat and / or sheet material wound thereon and used as packaging material for packaging piece goods, containers or similar article assemblies within a packaging machine having the features of the independent claim 1. The invention also relates to a corresponding method for handling and / or replacement of such rollers with the features of independent method claim 6.

In a grouping and compilation of articles to containers, eg. Of beverage containers o. The like., These are often held together in practice by shrink film to prevent slipping or loosening of the compilation during further handling or during transport. Such containers, which may comprise, for example, four, six or more containers or bottles of PET plastic, serve in particular as easy-to-handle sales units for end consumers. In order to achieve a high throughput in packaging and / or in a subsequent palletizing, the fastest possible compilation of such containers without interruption of individual process steps is desirable.

In order to provide the packaging material used as outer packaging or the shrink film for partial or complete wrapping of containers available, devices and methods are known, which unwind the material of a roll or multiple roles to carry within a packaging machine and thus the individual containers or the respective articles which are to form the respective container, wrap with the packaging material. The unwinding of the packaging material from the roll is usually carried out by machine and in approximately continuous process. Devices are known in which the packaging material is withdrawn via rollers from the rotating roll. If a roll is unwound and the stock of packaging material of the roll is exhausted, an exchange of the respective roll or a replacement by a new roll must take place. The sheet material webs are usually joined together when replacing the rollers, for example. By a gluing and / or welding process.

A method and a device by means of which new rolls delivered and used rolls can be changed within a packaging machine are, for example, from the DE 40 40 545 A1 known. This known device has a plurality of supply rolls with strip material, which are arranged side by side. The core of the rollers is placed in each case on a common pin. A beginning of the strip material is previously connected to a roller, which pulls the strip material from the respective roll and leads away from the device in the downward direction.

Devices for automatically feeding material wound on rolls and exchanging for used rolls in processing or packaging machines are also known in different embodiments, such as. As devices for feeding and changing coils with strip material in a processing machine according to DE 32 02 647 A1 or according to DE 41 42 256 A1 , Various facilities for supplying packaging machines with consumable or packaging material are also from the EP 1 273 541 B1 as well as from the DE 10 2006 017 379 A1 known.

As a rule, the known handling methods and devices require exact positioning and feeding of new reels or reels with packaging material wound thereon. In addition, it is necessary for a smooth packaging operation that the webs of material when joining together largely aligned and transported without lateral offset in the packaging machine, otherwise an inadequate packaging quality due to uneven film overhang threatens.

If such an exact positioning can not be ensured, the smooth transport of flat packaging material after the exchange of used new rolls is at risk, whereby the functionality and quality of the packaging machine can not be guaranteed to the desired extent.

These problems also occur in incorrectly wound roles and used in the packaging machine film rolls heaped with protruding or staggered wound sections, since the previously used sensors for axial position determination of roles after their onset such quality defects in the delivered roles usually can not recognize ,

For this reason, an object of the present invention is seen to provide a device and a method with a high degree of automation for handling wound on flat and / or sheet material material by means of which largely flat and / or sheet material can be provided without interruption , The device and the method are intended not only enable and support a fast and accurate roll feed to the packaging machine, but also at any time of material web conveying allow exact positioning of the rollers to promote the conveyed into the packaging machine material webs in the desired alignment and to ensure the required packaging quality can.

These objects of the invention are achieved with the objects of the independent claims. Features of advantageous developments of the invention will become apparent from the dependent claims.

To achieve the above object, the invention proposes a device for conveying, providing and / or handling and / or replacement of roles with flat and / or sheet material wound thereon and used as packaging material for packaging piece goods, containers or similar article compositions Features of independent claim 1 before. The supply, provision and / or handling of the rolls may be designed in the interest of an uninterrupted packaging operation in such a way that the packaging operation can continue to operate largely smoothly during the replacement of rolls. Optionally, however, the packaging company can be interrupted for a short time. In the apparatus according to the invention, at least approximately completely unwound and / or used up rolls for maintaining a continuous, a quasi-continuous or discontinuous packaging operation alternately from at least one installation position or depending on machine equipment also from two or more different mounting positions of a packaging machine removed and each new roles replaced with flat and / or foil material for the respective installation position. For this purpose, the device may in particular with means for providing new rolls for the packaging machine in a defined feed and take over the roles of the defined supply and for inserting the new roles in the respective installation position of the packaging machine and / or for the removal of used rolls from the be equipped respective installation positions of the packaging machine, said means may, for example, by handling robot o. The like. Formed. The at least one mounting position associated with the packaging machine is defined by a rotatable holding mandrel which is adjustable in its axial direction and together with the roller located thereon for rotatably receiving and centering the roll to be unwound in the packaging machine with flat and / or film material. At least one sensor for detecting an axial position of the roller and / or for detecting the spatial positions of at least the respective outer layers of the unwinding flat and / or foil material is at least one sensor for the respective installation position and / or on the mandrel in the respective installation position Assigned role. The output signals of the at least one sensor are provided to a control device, which generates control signals for the axial adjustment of the mandrel to be unwound, if necessary, so that depending on the detected and processed sensor signals of the at least one sensor, the roller with the aid of the adjustable mandrel can be brought into a precisely fitting position to ensure trouble-free packaging operation and allow. The adaptation of the axial position of the mandrel with the roll thereon can optionally during operation during unwinding of the flat and / or sheet material or after insertion of the roller for initial adjustment of the role before removing the wound thereon flat and / or Foil material done.

In the device according to the invention, the at least one sensor can be configured in a manner such that at least respective outer layers and / or a distance between at least one end face of the roll can be sensed by a predetermined sensor position of a new roll inserted into one of the installation positions. Thus, the scanning of the outer layers of the roll can be done on one of the front sides by means of the sensor or by means of several sensors. The at least one sensor may in particular be a distance sensor which can detect the distance from an end face of the roll or from a lateral material web edge of the unwound flat and / or film material and output analog sensor values as a function of the detected distances. In this way, the at least one sensor, depending on requirements and / or depending on its installation situation and its configuration, can detect an alignment of the flat and / or foil material unwound from the roll and / or a deviation from a desired course.

The at least one sensor may, for example, be an optical sensor and / or an ultrasonic sensor or another suitable sensor. Optionally, it can also be provided that the at least one sensor is variable and / or adjustable at a distance from the roller which is in each case in the installed position. The sensor may, for example, also be formed by a camera with downstream image evaluation.

In order to achieve the above object, the present invention also proposes a method for feeding, providing and / or for largely uninterrupted handling and / or replacement of roles with it wound up and serving as a packaging material for packaging piece goods, containers or the like article compilations flat and / or sheet material with the features of the independent method claim. Also in the method according to the invention, the feeding, provision and / or handling of the rolls in the interest of a continuous packaging operation can be designed in such a way that the packaging company can continue to run during the replacement of roles largely trouble-free. Optionally, however, the packaging company can be interrupted for a short time. In the method according to the invention, an at least approximately completely unwound and / or used up roll for maintaining a continuous, a quasi-continuous or even a discontinuous packaging operation is taken alternately from at least one installation position of a packaging machine and then each a new role with flat and / or sheet material in the each installation position used. Each new roll is provided to the packaging machine in a defined feed and used in the respective installation position, after there was previously taken a used-up roll. The installation positions are defined in the packaging machine in each case by rotatable receiving mandrels for rotatable receiving and centered holding of the rolls to be unwound in the packaging machine with flat and / or foil material. In addition, the respective rotatable mandrel is immediately after the insertion of a new role in one of the mounting positions and / or during ongoing packaging operation and during unwinding of the new roll for adjusting the axial positioning of the roll on the mandrel and / or adjusting the alignment of the roll unwound flat and / or sheet material adjusted in its respective axial direction.

In the method according to the invention, at least in each case outer layers of a roll newly inserted in one of the installation positions can be detected by sensors. In this case, a scanning of at least the outer layers of the respectively newly inserted into the packaging machine role in the region of one of the end faces or both ends by means of sensor or sensors. The unwound from the roll flat and / or sheet material thus passes a sensor position, whereby the alignment of the unwound from the roll flat and / or sheet material and / or a deviation from a desired course can be detected. Thus, it can be provided that a distance between at least one end face of the roller is detected by a predetermined sensor position. Such a distance measurement can be done with a distance sensing sensor. For this purpose, for example, a so-called. Fork sensor can be used, between the legs of the flat and / or sheet material is guided so that it can detect a correct alignment by detecting the depth of immersion of the packaging material in the fork of the fork sensor. The unwound from the roll flat and / or sheet material thus preferably passes a sensor position, wherein the alignment of the unwound from the roll flat and / or sheet material and / or a deviation from a desired course can be detected.

A further option of the method provides that a distance of the at least one sensor is variable and / or adjustable to each located in the installed position role. As a result, the sensor position after a roll change, for example, can also be adapted to different material web widths or different roll widths and / or different roll diameters. In the case of all different measuring variants, it can be provided that the distance between at least one end face of the roller is sensed by a predetermined optical and / or variable sensor position. However, it is also conceivable that the distance between at least one end face of the roller is detected by a predetermined and / or variable sensor position by means of an ultrasonic sensor. Further physical measuring principles are conceivable and useful for the method according to the invention, optionally also a combination of the mentioned and / or further measuring principles. As a sensor can also be advantageously used a camera with downstream image analysis.

Furthermore, the method provides for an optional adjustment of an axial position of the mandrel immediately after the insertion of a new roll in one of the mounting positions. Thus, this adjustment of the axial position of the roller can optionally be done only after insertion, but not during operation, which simplifies the sensory detection and can reduce the control effort during operation. By accepting an increased computational effort, however, the method also allows the axial position of the mandrel to be adjusted during ongoing packaging operation on the basis of the sensor values, which entails the advantage of a more exact web guide for the unwound flat and / or film material.

The device according to the invention and the method according to the invention enable improved material web guidance with more exact connection conditions after a roll change within a packaging machine. Since, in the case of film mandrels with motorized positioning, the film roll edge is normally detected when the film mandrel is inserted into the machine by means of a sensor, which signals a signal when the film edge is detected For the machine that supplies the position of the film roll on the mandrel so that the film roll can be positioned in the center of the machine based on the foil width data stored in the control panel, normally only exactly wound rolls and film rolls with protruding core can be precisely positioned , For helically wound rolls or rolls with a protrusion, this sensor will fail and will not provide usable data to properly position the rolls. However, improperly positioned film rolls are sealed with an offset, resulting in improperly wrapped packages, which in turn may result in limitations on the customer's production equipment being processed and / or increased downtime.

In contrast, the invention provides an improved way to avoid these disadvantages. When passing the film roll, the measured distances are permanently detected by the sensor with downstream data processing. In the signal processing, it is evaluated in which position the minimum distance (relevant foil edge) has been set. In addition, it is advantageous to attach a suitable sensor, such as a fork sensor, which measures the lateral foil course, shortly after the foil mandrel. This ensures a faster and more accurate adjustment of the position of the film roll against the side of the film. The particular advantage of the method described is that even film rolls with supernatant and skew can be positioned exactly in the middle. As a result, not perfectly prepared rolls of film can be processed; In addition, machine downtime can be avoided.

In the following, embodiments of the invention and their advantages with reference to the accompanying figures will be explained in more detail. The proportions of the individual elements to one another in the figures do not always correspond to the actual size ratios, since some shapes are simplified and other shapes are shown enlarged in relation to other elements for better illustration.

1 shows a schematic perspective view of an embodiment of a packaging machine having a device according to the invention.

2 shows a schematic perspective view of two installation positions for roles within the packaging machine.

3 shows in two perspective views a handling robot when inserting a new roll in the packaging machine.

4 shows a schematic plan view of a part of the packaging machine with two parallel rollers with flat packaging material.

5 shows in a total of five schematic views different roles variants whose different winding errors are detected by means of suitable sensors.

For identical or equivalent elements of the invention, identical reference numerals are used. Furthermore, for the sake of clarity, only reference symbols are shown in the individual figures, which are required for the description of the respective figure. The illustrated embodiments are merely examples of how the device or method of the invention may be configured and are not an exhaustive limitation.

The schematic perspective view of 1 shows an embodiment packaging machine 8th that with a device according to the invention 10 Is provided. The device 10 is used to handle flat packaging material such as shrink film or packaging films on large, due to their weight usually not manually manageable roles 12 are wound up. The packaging machine 8th and the associated device 10 can via a handling robot 14 new roles each 12 be fed when in the device 10 located roles are handled and therefore need to be replaced. The trained in the embodiment shown as a stationary arranged multi-axis robot handling robot 14 sets each of the packaging machine 8th to be supplied with new roles 12 in two different installation positions EB1 and EB2, which in the schematic representation of 1 can only be seen to some extent and in the detailed view of 2 exemplified be clarified.

Like a synopsis of 1 . 2 and 3 be detected by means of the handling robot 14 single new roles 12 used in one of the two installation positions EB1 and EB2, while in the other installation position EB2 or EB1 still a spent or partially used role 16 of which still during the insertion of each new role 12 furthermore a material web located thereon 18 is processed in the packaging machine 8th is processed as packaging material. During the further unwinding of the web 18 from the almost exhausted role 16 a connection or welding of an outer layer takes place 20 the new role 12 with the material web 18 , causing the device 10 in a continuous operation can run without the packaging process to replace a used-up roll 16 against a new role 12 would have to be interrupted.

The new roles 12 each put together from the wound flat packaging material 18 or the packaging or shrink film and a core 22 on which the packaging material 18 or the shrink film is wound up. To accept a new role 12 from one in 1 indicated horizontal conveyor 24 the handling robot emerges 14 via one end of its movable boom 26 movably arranged retaining pin 28 frontally into the core 22 a new role 12 one. An arm section 30 of the handling robot 14 For this purpose, it can be moved in rotation about a rotation axis. After immersing the retaining pin 28 in the core 22 becomes the cross-sectional diameter of the retaining pin 28 enlarged, so the new role 12 on the retaining pin 28 is clamped fixed. The core 22 is formed hollow cylindrical, the shape of the retaining pin 28 Corresponding thereto, so that the retaining pin 28 for the clamping fixation of the new roll 12 over its outer periphery with an inner circumferential surface of the core 22 communicates.

About the horizontal conveyor 24 or via a pallet delivery not shown here or via other suitable Zuführvarianten the handling robot 14 new roles 12 be provided in an uninterrupted sequence, so that when taking out a new role 12 from the horizontal conveyor 24 another new role 12 in the direction of the handling robot 14 is moved or in the direction of the handling robot 14 be succeeded. The horizontal conveyor 24 can be clocked as required in the desired manner or operated continuously at a constant speed.

In 1 it can also be seen in the region of the horizontal conveyor 24 positioned manipulator 32 by a user 34 is served and about which new roles 12 standing on the horizontal conveyor 24 can be placed. The new roles 12 For example, you can stand on a pallet 36 from which they are the user 34 by means of the controllable by him in his movements manipulator 32 accept and by means of a holding mandrel located there 38 on the horizontal conveyor 24 can place. A working area of the manipulator 32 extends therefore over the pallet 36 and over a section of the horizontal conveyor 24 , However, this shown control and Zufördervariante represents only one example of numerous conceivable alternatives. Also possible are continuously working Zufördervarianten that require no supportive manual handling, as they are based on the 1 is described. At the in 1 shown variant of the device 10 it remains the task of the user 34 , for each correct positioning of the rollers 12 on the horizontal conveyor 24 in particular with regard to their correct direction of rotation in the respective installation position EB1 or EB2 (cf. 2 and 3 ).

The 1 also shows an open-topped container 40 which is located in the working area of the handling robot 14 located. Is the supply of packaging material or shrink film one in the packaging machine 8th placed role 12 respectively. 16 is exhausted, by means of the handling robot 14 the core made of cellulose, plastic, wood or cardboard 22 an empty role 16 from the packaging machine 8th taken and in the container 40 stored. Only after removal of the core 22 can a new role 12 in the respective installation position EB1 or EB2 of the packaging machine 8th be used, so that the handling robot 14 first the core 22 takes out and chronologically following a new role 12 inserted into the respective installation position EB1 or EB2.

Preferably, the horizontal conveyor stand 24 , the handling robot 14 and the packaging machine 8th or the device contained therein 10 in conjunction with a control unit, not shown here. This can in particular the clocked operation of the horizontal conveyor 24 specify as well as an insertion and removal of roles 12 respectively. 16 through the handling robot 14 from the two installation positions EB1 and EB2 initiate. In addition, it can unwinding of packaging material or shrink film in the packaging machine 8th used roles 12 Taxes.

The schematic perspective view of 2 illustrates the previously mentioned installation positions EB1 and EB2 for the roles 12 and 16 in the packaging machine 8th according to the in 1 indicated variant are defined. Each of the mounting positions EB1 and EB2 is defined by its own rotatable mandrel 42 , Each of these pick-up spikes 42 which each have a separate drive for a controlled rotation of these thorns 42 is assigned, is also movable in the axial direction, in particular by means of motor drives, as shown by the 3 is explained in more detail. On each of these two horizontally aligned mandrels 42 is in each case by means of the handling robot 14 (see. 1 and 3 ) a new role 12 attached and by increasing the diameter of the mandrels 42 by clamping the roll core 22 on the respective mandrel 42 clamped fixed. Replacing the rollers 12 respectively. 16 can optionally by axial Movements of the mandrels 42 be supported and facilitated.

The 2 also leaves a welding bar 44 recognize which for connecting an outer layer 20 the new role used in the respective installation position EB1 or EB2 12 with the in the packaging machine 8th located or remaining material web 18 is provided and this is lowered vertically. After connecting the outer layer 20 with the in the packaging machine 8th remaining material web 18 becomes the tempered welding bar 44 lifted vertically until it is needed again for the next welding process.

In the presentation of the 2 is on the mandrel 42 in the first installation position EB1 a nearly used role 16 and gets off the spine 42 or by the removal of the material web 18 rotating moves. In this case, the packaging material or the shrink film is the on the mandrel 42 the first installation position EB1 roller 16 settled. In the second mounting position EB2 was a worn role 16 already completely settled and their core 22 over the handling robot 14 removed, so that the second mounting position EB2 or the mandrel 42 the second mounting position EB2 already again with a new role 12 could be equipped with packaging material.

Each of the installation positions EB1 and EB2 can also be assigned a separate sensor system or a camera, not shown here, by means of which at least approximately completely unwound and / or used up rollers 16 can be visually recognized, allowing an exchange for a new role 12 can be prepared and initiated. So that at least approximately completely settled and / or used up role 16 can be removed from their respective installation position EB1 or EB2, is previously one between the respective role 16 and the mandrel 42 solved stuck connection. This is typically done by reducing the cross-sectional diameter of the respective mandrel 42 , which causes the roll core 22 pull off. The loosening of the clamping connection or the reduction of the cross-sectional diameter of the receiving mandrels 42 is dictated by the already mentioned control unit, as well as the optional axial displacement of the mandrels 42 for better communication with the handling robot 14 and its retaining pin 28 ,

The device 10 can be automated in this way. For this purpose, a gripping bar is used 46 with which the outer layer 20 the inserted in the second mounting position EB2 new role 12 is detected and pulled below the welding bar to the left towards the first installation position EB1. The in 2 schematically illustrated gripping bar 46 can be part of one in the packaging machine 8th between the installation positions EB1 and EB2 and the welding bar 44 movable gripping and / or handling device (not shown) and may be the outer layer 20 the new role 12 grab and below the weld bar 44 position. This gripping bar 46 can the outer layer 20 the role 12 For example, by means of vacuum suck and grab.

The schematic representations of 3A and 3B show a part of the handling robot 14 , the gripping and / or handling device for handling the rollers 12 in the device 10 forms. The gripper arm or the arm section 30 of the handling robot 14 is one in 3A horizontal axis 48 swiveling so that the retaining pin 28 of the handling robot 14 for immersion in the core 22 the respective new role 12 can be aligned with vertical orientation of its longitudinal axis. Became the respective new role 12 from the handling robot 14 or by means of his retaining pin 28 captured, so may the new role 12 by a renewed pivoting movement of the gripping arm 30 around the axis 48 rotated and in each of the role 12 assigned installation position EB1 or EB2 (see. 2 ) are used.

The 3B illustrates the positioning process of a new role 12 in one of the intended installation positions EB1 or EB2 in the packaging machine 8th , The new role 12 with packaging material has already been placed on the mandrel 42 in the packaging machine 8th postponed. Previously, she was from the retaining thorn 28 of the handling robot 14 separated, after which the retaining pin 28 with a stamp attachment 50 was provided for the purpose of sliding the role 12 on the mandrel 42 against an axial stop 52 temporarily on the retaining pin 28 of the handling robot 14 was fixed. This pushing operation, with which the stamping attachment 50 against the front of the roll 12 press until it stops against the axial stop 52 and thus pushed into their intended installation position EB1 or EB2 is in 3B clarified. After reaching the installation position EB1 or EB2, the handling robot 14 again from the role 12 be solved and given new tasks. The lowering of a used or almost used up roll 16 from the mandrel 42 and the takeover by the retaining pin 28 of the handling robot 14 in contrast, by means of the displaceable axial stop 52 and by means of a displaceable mounting of the rotatable receiving mandrel 42 relieved, which is not shown here.

As soon as the new role 12 on the mandrel 42 is placed, typically by pushing against the axial stop 52 , the outer location 20 according to 2 from the role 12 subtracted and the packaging machine 8th be fed to them by means of the welding bar 44 with the material web 18 to connect, who are still in the packaging machine 8th located. An electric drive unit 54 ensures the desired rotation of the mandrel 42 together with the role on it 12 , The drive unit 54 is a bearing block 56 assigned to a storage for the unilaterally mounted there rotating mandrel 42 forms. On its underside is the bearing block 56 with a carriage guide 58 equipped, which is a displacement of the bearing block 56 together with the arbor mounted there 42 and the drive unit 54 parallel to the longitudinal axis of the mandrel 42 allows. By means of the same slide guide 58 is also the axial stop 52 displaceable.

The possibility of moving the bearing block 56 with the help of the slide guide 58 especially for exact positioning of the roll 12 with respect to the material web guide in the packaging machine 8th to be necessary. So it is necessary, the material webs 18 When joining together to guide exactly aligned, which is why a suitable positioning of the role 12 is required. The respective possibilities of 4 indicated schematically. Both the role in the first installation position EB1 16 , which has already been partially processed, as well as the new role used in the second mounting position EB2 12 Each is a separate position sensor 60 assigned to the exact central positioning of the rollers 12 and 16 and optionally with the aid of the control device for the axial displacement in the direction of the arrow 62 respectively. 64 can provide left or right. The film welding station with the welding bar located between the two installation positions 44 is in 4 merely hinted.

In this way, the new film rolls 12 in the middle of the machine 8th be positioned, but only with exactly wound rollers 12 and film rolls with protruding core 22 in the desired manner is to ensure. For diagonally wound rolls 12 or roles 12 with a supernatant fail the commonly used sensors 60 and do not provide useable data to the roles 12 to position correctly. Incorrectly positioned film rolls 12 can be welded in these cases with an offset, which leads to incorrectly wrapped containers, which in turn can lead to limitations in the processing means to be processed for the customer and / or increased service life.

The total of five schematic representations of 5A to 5E illustrate the operation of one of the respective mounting position EB1 and / or EB2 associated sensor 66 , which differs from the arrangement of the sensors 60 according to 4 at least one of the two end faces 68 is assigned and there as a scanning zone 70 designated area of the respective role 12 and or 16 not just after setting up a new role 12 but also during the unwinding of the sheet-like packaging material wound thereon, so that also a gradually unwound or almost exhausted roll 16 from the sensor 66 in the area of the scanning zone 70 can be detected. The scanning zone 70 at the front 68 the role 12 respectively. 16 detecting sensor 66 can, for example, by an optically operating sensor 66 or an ultrasonic sensor o. The like. Be formed. The sensor 66 provides an analog signal value 72 that of the frontal contour of the roll 12 respectively. 16 depends. Like the 5A the sensor delivers 66 a staircase-shaped signal value 72a , which has a properly cylindrical roller contour with flat-cylindrical front side 68 and from it outstanding roll core 22 smaller diameter and subsequent cylindrical mandrel 42 with even smaller diameter shows.

The one from the sensor 66 signal value generated from the end-face roll contour 72 is in a control circuit 74 evaluated and to form a control signal 76 for axial displacement 64 the role 12 respectively. 16 edited. This axial displacement 64 the role 12 respectively. 16 (see also 4 ) is usually done by means of a motor movement of the mandrel 42 together with the role stored there 12 respectively. 16 carrying bearing blocks 56 with the help of the slide guide 58 as it is in 3B is illustrated.

In this way, depending on the respectively detected and processed sensor signals 72 of the at least one sensor 66 the role 12 respectively. 16 with the help of the adjustable mandrel 42 be brought into a precise position to ensure trouble-free packaging operation. Adjusting the axial position of the mandrel 42 with the help of along the carriage guide 58 adjustable bearing blocks 56 may preferably during operation during unwinding of the flat and / or sheet material 18 or optionally, only after inserting a new roll 12 for the first time adjustment of the role 12 before the removal of the flat and / or foil material wound thereon 18 respectively.

If the axial position correction 64 the role 12 respectively. 16 while continuously during operation, ie during unwinding of the flat and / or film material 18 in the packaging machine 8th takes place, so can also different deviations of the winding state of newly inserted roles 12 from the ideal state according to 5A be processed, without causing disturbances or lateral deviations of the material web course within the packaging machine 8th caused. Such different deviations of the winding state newly delivered roles 12 from the ideal state of the outside to the core 22 cylindrically wound rolls 12 with correspondingly flat-cylindrical end face 68 can be found in the following representations of 5B to 5E described.

In the variant according to 5B the sensor delivers 66 again an analog signal value 72 that of the frontal contour of the roll 12 respectively. 16 depends. Like the 5B the sensor delivers 66 a non-ideal staircase shaped signal value 72b but shows a ramp-shaped section, which is not a properly cylindrical roller contour, but a unilaterally wound coil 12 with conical face 68 and from it outstanding roll core 22 smaller diameter and subsequent cylindrical mandrel 42 with even smaller diameter shows. Again, that's the sensor 66 signal value generated from the conical end-face roller contour 72 in the control circuit 74 evaluated and used to form the control signal 76 for axial displacement 64 the role 12 respectively. 16 edited. This axial displacement 64 the role 12 respectively. 16 (see also 4 ) takes place by means of a motor movement of the receiving mandrel 42 together with the role stored there 12 respectively. 16 carrying bearing blocks 56 with the help of the slide guide 58 ( 3B ). In this way, depending on the respectively detected and processed sensor signals 72 of the sensor 66 the role 12 respectively. 16 with the help of the adjustable mandrel 42 be brought into an exact position at all times to ensure a trouble-free packaging operation.

In the variant according to 5C the sensor delivers 66 again an analog signal value 72 , the frontal contour of the roll 12 respectively. 16 maps. Like the 5C the sensor delivers 66 again, no ideal staircase-shaped signal value 72c but shows a briefly rising section, which indeed signals a properly cylindrical roller contour, but points the core 22 an unusual supernatant 78 on the positioning 64 the role 12 could interfere with an ideal web course, unless he recognized and the in 5C could be assigned to the indicated phenomenon. Again, that's the sensor 66 signal value generated from the detected roll contour 72 in the control circuit 74 evaluated and used to form the control signal 76 for axial displacement 64 the role 12 respectively. 16 edited. This axial displacement 64 the role 12 respectively. 16 (see. 4 ) takes place by means of a motor movement of the receiving mandrel 42 together with the role stored there 12 respectively. 16 carrying bearing blocks 56 with the help of the slide guide 58 ( 3B ). In this way, depending on the respectively detected and processed sensor signals 72 of the sensor 66 the role 12 respectively. 16 with the help of the adjustable mandrel 42 be brought into an exact position at all times to ensure a trouble-free packaging operation.

Also at the in 5D shown variant of the signal value recovery provides the sensor 66 again an analog signal value 72 , the frontal contour of the roll 12 respectively. 16 maps. Like the 5D the sensor delivers 66 Again, no ideal staircase-shaped signal value 72d , but shows an initially flat course, which then drops sharply, giving the diameter of the mandrel 42 displays. This provides the signal value 72d no illustration of a regular cylindrical roller contour, because the outer material webs 20 show a pronounced supernatant 80 on, the first a strong shift of the role 12 for an ideal material web course requires, in the course of the development of the material web 18 must be corrected again. Again, that's the sensor 66 signal value generated from the detected roll contour 72 in the control circuit 74 evaluated and used to form the control signal 76 for axial displacement 64 the role 12 respectively. 16 edited. The axial displacement 64 the role 12 respectively. 16 takes place in the manner already described (cf. 4 ).

At the in 5E shown variant of the signal value recovery provides the sensor 66 finally another analog signal value 72 , the frontal contour of the roll 12 respectively. 16 maps. Like the 5E the sensor delivers 66 Again, no ideal staircase-shaped signal value 72e , but shows a first flat course, which then drops significantly, to fall off again after another stage. This provides the signal value 72e no illustration of a regular cylindrical roller contour, because one or more material web layers 18 in the middle area of the roller front side 68 show a pronounced supernatant 82 on, after roughly unwinding the half roll 12 a strong shift in the role 12 for an ideal material web course requires, in the course of the development of the material web 18 must be corrected again. Again, that's the sensor 66 signal value generated from the detected roll contour 72 in the control circuit 74 evaluated and used to form the control signal 76 for axial displacement 64 the role 12 respectively. 16 edited. The axial displacement 64 the role 12 respectively. 16 takes place in the manner already described (cf. 4 ).

In addition to the winding errors shown are combinations of several of these deviations of a standard wound coil 12 conceivable, however, by means of the sensors shown - optionally formed by a sensor 66 or more sensors 66 - detected and with the help of the downstream control 74 by moving the roll 12 in the axial direction (arrow 64 ) can be balanced if necessary. In this way, film rolls with overhang and / or inclined windings different cone angle can be positioned exactly in the middle. As a result, not perfectly prepared rolls of film can be processed; In addition, machine downtime can be avoided.

As mentioned, the at least one sensor may be 66 for example, an optical sensor and / or an ultrasonic sensor or another suitable sensor. Optionally, it can also be provided that the at least one sensor 66 at a distance from the roller in the installed position 12 or to the front side 68 is variable and / or adjustable. The sensor 66 can, for example, be formed by a camera with downstream image analysis.

The invention has been described with reference to a preferred embodiment. However, it will be apparent to those skilled in the art that modifications or changes may be made to the invention without departing from the scope of the following claims.

LIST OF REFERENCE NUMBERS

8th

 Packaging machine, machine

10

 contraption

12

 Role, new role

14

 handling robots

16

 Roll, used roll, partially wound roll, partially used roll, empty roll

18

 Material web, packaging material, flat material, film material

20

 outer layer, outer material web

22

 Core, roll core

24

 Horizontal conveyor

26

 Cantilever arm, swivel arm

28

 holding mandrel

30

 Arm section, gripper arm

32

 manipulator

34

 User, operator

36

 palette

38

 holding mandrel

40

 Container

42

 Thorn, mandrel, retaining pin

44

 Welding bar, foil welding station

46

 cross bar

48

 Rotary axis, swivel axis, horizontally oriented axis

50

 stamp unit

52

 axial stop

54

 Drive unit, electric drive unit

56

 bearing block

58

 carriage guide

60

 position sensor

62

 axial displacement (of the roller), axial position correction

64

 axial displacement (of the roller), axial position correction, axial adjustment, axial position

66

 sensor

68

 Front side (of the roll)

70

 scanning

72

 Signal value, sensor value, analog signal value, output signal, sensor signal

72a

 first signal value

72b

 second signal value

72c

 third signal value

72d

 fourth signal value

72e

 fifth signal value

74

 Control circuit, evaluation circuit, control device

76

 control signal

78

 Supernatant, nuclear supernatant

80

 Overhang (the outer material web, several outer material webs)

82

 Supernatant (one middle material web, several middle material webs)

EB1

 first installation position (for a roll)

EB2

 second installation position (for a roll)

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 4040545 A1 [0004]
• DE 3202647 A1 [0005]
• DE 4142256 A1 [0005]
• EP 1273541 B1 [0005]
• DE 102006017379 A1 [0005]

Claims (14)

Contraption ( 10 ) for the promotion, provision and / or handling and / or exchange of roles ( 12 . 16 ) with flat and / or sheet material wound thereon and used as packaging material for packaging piece goods, containers or similar article compositions ( 18 ), wherein at least approximately completely settled and / or used up roles ( 16 ) for maintaining a packaging operation alternately from at least one installation position (EB1, EB2) of a packaging machine ( 8th ) and each with a new role ( 12 ) with flat and / or sheet material ( 18 ) can be replaced for the respective installation position (EB1, EB2), wherein the at least one installation position (EB1, EB2) in the packaging machine ( 8th ) by an adjustable in its axial direction rotatable mandrel ( 42 ) for rotatable mounting and centered mounting of the in the packaging machine ( 8th ) to be handled ( 12 . 16 ) with flat and / or sheet material ( 18 ), and wherein the respective installation position (EB1, EB2) and / or on the mandrel ( 42 ) in the respective installation position (EB1, EB2) located role ( 12 . 16 ) with unwinding flat and / or sheet material ( 18 ) at least one sensor ( 60 . 66 ) for detecting an axial position of the roller ( 12 . 16 ) and / or for detecting the spatial positions of at least the respective outer layers ( 20 ) of the roll to be handled ( 12 . 16 ), whereby output signals ( 72 ) of the at least one sensor ( 60 . 66 ) a control device ( 74 ) for generating control signals ( 76 ) for axial adjustment ( 64 ) of the roll to be unwound ( 12 . 16 ) receiving mandrel ( 42 ) as a function of detected and processed sensor signals ( 72 ) of the at least one sensor ( 60 . 66 ) to provide. Apparatus according to claim 1, wherein the at least one sensor ( 60 . 66 ) at least respective outer layers ( 20 ) and / or a distance between at least one end face ( 68 ) of the role ( 12 . 16 ) from a predetermined sensor position of a newly inserted into one of the mounting positions (EB1, EB2) role ( 12 . 16 ) sensory detected. Apparatus according to claim 1 or 2, wherein the at least one sensor ( 60 . 66 ) an alignment of the roll ( 12 . 16 ) unwound flat and / or sheet material ( 18 ) and / or detects a deviation from a desired course. Device according to one of claims 1 to 3, wherein the at least one sensor ( 60 . 66 ) is an optical sensor and / or an ultrasonic sensor. Device according to one of claims 1 to 4, wherein the at least one sensor ( 60 . 66 ) at a distance from the respective roll in the installed position (EB1, EB2) ( 12 . 16 ) and / or its front side ( 68 ) is variable and / or adjustable. Method for the promotion, provision and / or handling and / or replacement of roles ( 12 . 16 ) with flat and / or sheet material wound thereon and used as packaging material for packaging piece goods, containers or similar article compositions ( 18 ), in which an at least approximately completely completed and / or exhausted role ( 16 ) for maintaining a packaging operation alternately from at least one installation position (EB1, EB2) of a packaging machine ( 8th ) and then each a new role ( 12 ) with flat and / or sheet material ( 18 ) is inserted into the respective installation position (EB1, EB2), whereby new roles ( 12 ) of the packaging machine ( 8th ) are provided in a defined feed and inserted into the respective installation position (EB1, EB2), after there has previously been a used-up roller (FIG. 16 ), wherein the installation positions (EB1, EB2) in the packaging machine ( 8th ) each by rotatable mandrels ( 42 ) for rotatable mounting and centered mounting of the in the packaging machine ( 8th ) roles to be handled ( 12 . 16 ) with flat and / or sheet material ( 18 ) are defined, and wherein the respective rotatable mandrel ( 42 ) immediately after inserting a new roll ( 12 ) in one of the installation positions (EB1 or EB2) and / or during the current packaging operation and during the unwinding of the new roll ( 12 ) for adjusting the axial positioning of the roller ( 12 ) on the mandrel ( 42 ) and / or for adjusting the alignment of the roll ( 12 ) unwound flat and / or sheet material ( 18 ) is adjusted in its respective axial direction. Method according to Claim 6, in which at least in each case outer layers ( 20 ) a role newly inserted in one of the mounting positions (EB1, EB2) ( 12 ) are sensory detected. Method according to Claim 6 or 7, in which an axial position ( 64 ) of the mandrel ( 42 ) immediately after inserting a new roll ( 12 ) is adapted in one of the installation positions (EB1, EB2). Method according to one of claims 6 to 8, wherein a distance between at least one end face ( 68 ) of the role ( 12 . 16 ) is detected by a predetermined sensor position. Method according to one of claims 6 to 9, in which that of the roll ( 12 . 16 ) unwound flat and / or sheet material ( 18 ) passes a sensor position, the alignment of the roll ( 12 . 16 ) handled flat and / or Film material ( 18 ) and / or a deviation from a desired course is detected. Method according to Claim 9 or 10, in which a distance of the at least one sensor ( 60 . 66 ) to the respective roll in the installed position (EB1, EB2) ( 12 . 16 ) and / or its front side ( 68 ) is variable and / or adjustable. Method according to one of claims 6 to 11, wherein an axial position of the mandrel ( 42 ) during the current packaging operation on the basis of the sensor values ( 72 ) is adjusted. Method according to one of claims 6 to 12, wherein the distance between at least one end face ( 68 ) of the role ( 12 . 16 ) is sensory detected by a predetermined and / or variable sensor position by optical means. Method according to one of claims 6 to 12, wherein the distance between at least one end face ( 68 ) of the role ( 12 . 16 ) is detected by a predetermined and / or variable sensor position by means of an ultrasonic sensor.

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