DE29608305U1 - Packing machine - Google Patents

Description

ROGER, BARTH files ·"&' AB Et''"' _Dr m _g r R _üg er

r^xx ..... &igr;- r^ij-Axj. Dipl.-Ing. H. P. Barthelt

Patent Attorneys · European Patent Attorneys or.-ing.T.Abei

Patent Attorneys European Patent Attorneys

PO Box 348 D-73704 Esslingen a. N.

Webergasse 3 7 May 1996 D-73728 Esslingen a. N.

_ _ Telephone (0711)35 6539

Gm 1 abfe _{fax (0711)359903}

Telex 7 256 610smru

Telegram patent protection ^Esslingenneckar

VAT DE 145 265

Göria Maschinenbau GmbH & Co. KG, Fellbacher Straße 4, 73 63 0 Remshalden

Packing machine

The invention relates to a packaging machine, in particular a collective packaging machine, with which several individual packages can be combined into one bundle. The packaging machine attaches a band made of adhesive film, cling film, paper or another flat material to the bundle in order to hold the individual packages together.

In the food industry, the pharmaceutical industry and other areas, individual packages are combined to form larger containers. The individual packages should be held together securely, while at the same time the material required for the resulting outer packaging should be kept as low as possible.

It is known to combine individual packages into a bundle using shrink film. The shrink film is placed around the bundle as a film tube and heated, whereupon it shrinks and holds the packages together. This requires a considerable amount of material and energy.

Accounts: Deutsche Bank AG, Esslingen branch 334 014{BLZiiM 1 7&Oacgr;0 79)·- PosttMnkTSttitrgart 62451 -700 (BLZ 600 100 70)

Individual packages can also be combined into bundles using self-adhesive or self-adhesive films or film strips. This creates a band that holds the packages together and runs completely or partially around the bundle thus formed. Since the band is the only means of holding the packages together, it is important that it is attached to the bundle precisely and firmly.

In practice, it is often necessary to produce different sized containers from one and the same individual packages. In addition, the size of the individual packages occasionally changes. It is therefore important that a suitable packaging machine can be adjusted to different container sizes as well as to different package sizes. This should be possible in the simplest and clearest way possible.

Packaging machines are usually integrated into larger systems, whereby the working speed of the packaging machine must be such that the other parts of the system can work without hindrance.

This leads to the object underlying the invention, namely to create a packaging machine that enables high working speeds. Furthermore, the packaging machine should have a design that is as simple and clear as possible and should be easily adaptable to different containers. 30

This object is achieved by the packaging machine having the features of claim 1.

The packaging machine contains a transport device that transports a group of individual packages to be combined into a bundle along a predetermined path. The additional removal device

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provides a section of suitable banding material, such as an adhesive film, a cling film, paper or similar. For this purpose, the removal device has two grippers, which alternately provide and clamp a section of banding material across the transport direction of the packages. Because the grippers can be moved past each other in opposite directions, one gripper can perform a return stroke while the other gripper pulls a section of track into the required starting position for wrapping the package. This results in a fast work sequence.

The grippers work alternately in a common working plane from a starting position to an end position, with the return stroke preferably taking place in a return plane. This allows the gripper in the return stroke to move unhindered past the gripper that is currently performing a working stroke. If the starting position is adjustable, different lengths of banding material can be easily pre-positioned by the gripper.

The grippers of the device according to claim 1 or of another machine with only one gripper or with several grippers are preferably vacuum grippers, which make it possible to hold the banding material flat. It has proven to be advantageous if the grippers have a contact surface with a roughened surface, which can be formed, for example, by a 0-grain coating. Equipped with such a surface, the grippers can grip a side of the banding material coated, for example, with adhesives or bonding agents, i.e. can be brought into contact with it. The granular coating enables the vacuum to spread between the gripper and the banding material that is adjacent, which ensures a good adhesive effect. However, the film only lies on one side.

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A large number of contact points or smaller areas on the roughened contact surface. This prevents the preferably self-adhesive film from sticking to the grippers and makes it easier to release by counter pressure. 5

In addition, a holding device can be provided that holds the banding material near the starting position of the gripper. The holding device is preferably a vacuum holding means with a contact surface in the working plane.

In addition, a cutting device can be provided on the pull-off device, which cuts off a section from a web of banding material that is kept ready for the container and whose length is determined by the working stroke of the gripper. This means that continuous material without perforations or similar can be used as banding material. Conversion to different container sizes is possible without changing the banding material.

The cutting device can have a knife that is stationary with respect to the direction of travel of the banding material, which cuts through the tightly held banding material preferably between the holding device and the gripper. The gripper serves with its lower edge as a counter knife for the cutting forces.

If required, a device for forming a grip tab can be provided on the extraction device. This preferably includes a folding channel that can be subjected to vacuum, into which a section of the banderol blank is sucked in slidingly along its wall. The folding channel is arranged and designed in such a way that the end or another section of the banderol blank lies in a U-shape in the folding channel, with sections coated with adhesive or glue

of the cut to point at each other. If the folding channel is narrowed or closed in a controlled manner, a grip tab is created. This can be formed as required, regardless of the length of a respective pre-positioned band section. Continuously coated film can therefore be used as band material. Conversion to other container sizes is possible without any problems.

If necessary, the device can also be arranged so that the grip tab is formed away from the ends of the blank. In conjunction with a perforation, a tamper-evident closure is thus formed.

A particularly simple device for forming a grip tab is obtained if the holding device generates a holding force in the vicinity of the folding channel, which can be subjected to a controlled vacuum, which allows the band material to be sucked into the folding channel, whereby the band material partially slides off the holding device. It has proven advantageous here to use a holding plate with pores permeated and a vacuum applied to the back as the holding device. Due to the considerable flow resistance of the pores, the vacuum applied to the back is not lost even if the band blank is only partially in contact with the holding plate.

An intermediate holding device holds the cut band section ready to cross the transport path of the container. The intermediate holding device is not in contact with the adhesive side of the band section, i.e. the grippers and the intermediate holding device are on different sides of the band section. The intermediate holding device holds

The banding material is preferably stretched and prevents it from falling down or bunching up.

If the grippers are in contact with an adhesive or clinging side of the web, the intermediate holding device rests on a relatively smooth, non-adhesive outer side. This enables a relative movement between the banding material and the intermediate holding device when the vacuum is switched on. By advancing the container, the banding material is pulled off the intermediate holding device with not too much resistance.

The intermediate holding device preferably has at least one length-adjustable section. This and, if necessary, a height-adjustable design of the cutting device makes it easy to adapt to different container sizes.

The take-off device includes a preferably rotating mandrel for a reel of banderol material. To buffer or temporarily store the banderol material, it is guided over several loose and fixed rollers, whereby the loose rollers are mounted on a frame that can be moved up and down in a linear manner and are tensioned against the web of banderol material by weight or otherwise.

An embodiment of the invention is shown in the drawing. It shows: 30

Fig. 1 a schematic diagram of the packing machine, in a schematic, simplified perspective view,

Fig. IA a container 2A produced by means of the packaging machine according to Fig. 1 with a banderol having a grip tab 3A,

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Fig. 2 shows a vacuum gripper provided on the packaging machine according to Fig. 1, in a schematic perspective view, in a view of its gripping side and on a different scale. 5

Fig. 3&Aacgr;-&Egr; a device provided on the packaging machine according to Fig. 1 for forming grip tabs, in different working phases, each in a schematic sectional view and

Fig. 4A-D the packing machine according to Fig. 1, in a highly schematic side view and in different working phases.

In Fig. 1, a packing machine 1 is shown in a roughly simplified representation and with all frame and panel parts omitted. The packing machine 1 is used to combine individual packages 2 into a bundle using an adhesive film 3 that is stored on a reel 4. The adhesive film 3 is a transparent film coated on one side with an adhesive or bonding agent, whereby the adhesive is designed in such a way that it gives way and comes off under peeling stress. Adhesive film 3 that adheres to paper or cardboard can be peeled off from this substrate without damaging the surface.

A removal device 6 is provided for providing adhesive film sections with which the packages 2 are to be combined to form a bundle. This includes a cutting device 7 as well as a first vacuum gripper 8 and a second vacuum gripper 9. The adhesive film 3 is fed to the removal device 6 via a deflection roller 11, which is mounted on the machine frame (not shown in more detail) so as to be rotatable about a horizontal axis and is arranged above the removal device 6.

Further pivotally mounted deflection rollers 12, 13, 14 are arranged parallel to and at a distance from the deflection roller 11 in a frame-fixed manner. The film 3 is guided, starting from the roll 4, with its non-adhesive back over the deflection roller 14, 13, 12, 11. Sections of the adhesive film 3 that sag downwards between the deflection rollers 12, 13 and 13, 14 are stretched downwards by deflection rollers 16, 17 that are loaded vertically downwards and are mounted on a frame 15 that is only symbolically indicated. The pivotally mounted deflection rollers 16, 17 are provided with a non-stick coating and are in contact with the adhesive side of the adhesive film 3.

With the frame 15, the deflection rollers 16, 17 form a so-called dancer, which is held vertically on a linear guide. The dancer's own weight tensions the adhesive film 3. The position of the dancer 15 is monitored both by means of a limit switch and by means of a sensor device for position detection. Depending on the dancer position, the speed of a motor driving the roll 4 is controlled.

The cutting device 7 is arranged vertically below the deflection roller 11 and includes a knife 20 that can be moved in the direction of arrow 19 and is arranged horizontally and transversely to the adhesive film 3. A preferably pneumatically operated actuating device (not shown in more detail) is provided for the targeted actuation of the knife 20. A holding device 22 is arranged below the knife 20 and holds the adhesive film from its non-adhesive side using a vacuum.

The holding device 22 is designed to be vertically adjustable on a linear guide 23 and is held at a predetermined height by means of a locking device (not shown in more detail). The holding device 22 forms a vertically adjustable unit together with the cutting device 7. This allows the distance between the holding device 22 and the cutting device 7 and the container to be adjusted. The holding device 22 is explained later in connection with Figs. 3A to 3D.

An intermediate holding device 24 extends downwards approximately in the middle of the holding device 22. This includes a box profile tube 25 that can be subjected to a vacuum and has suction openings on its side facing the adhesive film 3. Two further box profile tubes 26, 27, also provided with suction openings, are arranged adjacent to the box profile tube 25 and are connected to the

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Box profile tube 25 are held in a longitudinally adjustable manner. The intermediate holding device 24 also has a section 24' which is also formed by box profile tubes with suction openings and which is arranged in a straight extension of the box profile tube 25 vertically below a plane on which the packs 2 are guided and transported.

On a vertically arranged guide rail 29 belonging to the linear guide 23 of the holding device 22, two supports 31, 32 are held vertically movable at a distance parallel to one another and transversely to the transport direction of the packages 2, on each of which a pressure roller 33, 34 covered with foam rubber is rotatably mounted. The vertical adjustment of the supports 31, 32 takes place via drive devices not shown in detail in the direction of the arrows 35, 36.

In order to pull the adhesive film 3 downwards over the holding device 22, the intermediate holding device 24 and the pressure rollers 33, 34, the vacuum grippers 8, 9 are provided, each of which is mounted so that it can move vertically in the direction of the arrows 43, 44 by means of a linear guide 41, 42. The linear guide 41 includes a vertically arranged guide rail 46 on which a carriage 47 is mounted. This is connected to a strand of a toothed belt running parallel to the guide rail 46 and can therefore be moved vertically in a targeted manner. The carriage 47 carries another carriage 48 via another linear guide, which can be adjusted horizontally against the carriage 47, i.e. towards and away from the adhesive tape 3 (arrow 49). A pneumatic drive 51 is used for this purpose.

While the linear guide 41 is arranged on one side of a working plane defined by the adhesive tape 3, the linear guide 42 is on the other side of the

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This working plane is arranged, but otherwise structurally identical to the linear guide 41. Accordingly, a slide 47' is seated on a vertically arranged guide rail 46', which is vertically adjustable and driven independently of the slide 47. The slide 47' carries a further slide 48', which is adjustable in the direction of arrow 49' and is adjustable in a controlled manner by means of a pneumatic drive 51'. By actuating the drives 51, 51', the vacuum grippers 8, 9 can be brought into and out of contact with the adhesive tape 3 with their respective contact surface 53, which can be seen for example in Fig. 2.

The vacuum gripper 8, which is constructed identically to the vacuum gripper 9 and is described below as a representative of the latter, is only held on one side with its end 54 on the respective carriage 48 (48') and extends from it in a self-supporting manner transversely to the transport direction. The vacuum gripper 8 has, starting from the end 54, an outwardly closed housing 56, which is essentially flat on its side facing the adhesive tape 3 and is provided with a large number of suction openings 57. In addition, the contact surface 53 has a high roughness. In the present embodiment, this is achieved by a relatively coarse sandpaper or sandpaper 58 provided on the contact surface 53. However, the contact surface 53 can also be provided with a grain in another way or roughened in another way.

The high surface roughness means that when the adhesive film 3 provided with an adhesive or bonding agent is sucked in, there is multiple point contact between the tips and edges of the grain protruding over the contact surface 53 and the adhesive film 3. This prevents the adhesive film 3 from sticking to the contact surface 53 and also prevents the vacuum from spreading.

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around, starting from the suction openings 57, between the contact surface 53 and the adhesive film 3. This increases the surface adhesion of the adhesive film 3 to the vacuum gripper 8, so that correspondingly large tensile forces can be introduced into the adhesive film 3 by the vacuum gripper 8. This enables the adhesive film 3 to be pulled off the roll 4 with relatively great force and high pulling speed. If the vacuum gripper 8 is briefly subjected to excess pressure, the adhesive film 3 comes off the vacuum gripper 8 easily and completely.

As can be seen from Fig. 1, the packaging machine 1 includes a table 61 for receiving the packages 2, which is mounted so that it can be adjusted horizontally in and against the transport direction (arrow 62). A drive (not shown) is used to control the movement of the table.

The table 61 is assigned a slider 63 which extends vertically and transversely to the transport direction and can be moved forwards and backwards in a controlled manner by means of a feed device.

At the same height as the table 61, a table 64 is provided, arranged in the transport direction behind the pressure rollers 33, 34. Two guide plates 66, 61 are held vertically and in the transport direction on the table 64, parallel to one another and adjustable. These define a channel for receiving and holding a package together during the banding process.

The holding device 22 and the cutting device are shown in particular in Fig. 3. The holding device 22 includes a suction body 68 extending transversely to the adhesive film 3, which has a porous housing section 69 with an L-shaped cross section. This housing section 69 is made of an open-pore material

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It can be made of porous metal (aluminum) or plastic. A vertical leg forms a flat contact surface for the adhesive film 3 and merges with a certain rounding into a horizontal leg. The suction body 68 is connected to a controllable vacuum source Vl via a vacuum line.

Between the horizontal leg of the suction body 68 and a suction element 71, a gap- or slot-shaped folding channel 72 is defined, which is connected to a controlled vacuum source V2 via a vacuum line. The suction element 71 is a closed housing, which is provided with several suction openings 73 on its side lying flat against the adhesive film 3.

The folding channel 72 extends horizontally across the direction of travel of the adhesive film 3 and is used to form a non-adhesive grip tab on a film blank. A vertically movable strip 74 acting as a stamp is held in the folding channel 72 and can be adjusted upwards by means of electrical or pneumatic drive elements 75 (Fig. 1) so that the folding channel 72 is narrowed when actuated.

The drive devices of the grippers 8, 9, the knife 20, the carriers 31, 32, the table 61, the slider 63 and the reel 4 are automatically controlled by a control device preferably based on a microcomputer.

The packing machine 1 described so far works as follows:

5 At the beginning of a working cycle, the table 61 with the packages 2 arranged thereon is in its position away from the pressure rollers 33, 34.

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The vacuum gripper 8 is in its vertically upper gripping position in a position adjacent to the holding device 22. By appropriately controlling its drive 51, the gripper 8 with its contact surface 53 is in the working plane defined by the holding device 22 and the intermediate holding device 24, 24'. It is subjected to a vacuum so that the adhesive film 3 rests and adheres with its adhesive side to its contact surface 53. In contrast, the vacuum gripper 9 is moved out of the working plane by appropriately controlling its drive 51'.

A work step now follows in which the vacuum gripper 8 is moved to its lower position 81 shown in Fig. 4B and in doing so pulls a length of adhesive film 3 from the roll 4 corresponding to its travel path. The adhesive film 3 resting on the gripper 8 on the adhesive side is held securely on the gripper 8 thanks to the described design of the contact surface 53. At the same time, the vacuum gripper 9 moves upwards and is

arrived, moved to the working level, i.e. placed on the adhesive film 3 and subjected to a vacuum so that after the web has been cut, the web section located above the knife 20 does not run back. 25

While the table 61 is moved towards the pressure rollers 33, 34, the knife 20 is actuated as shown in Fig. 3B. It pierces the adhesive film 3 and separates it above the holding device 22. The adhesive film 3 is now attached to the holding device 22 and the

Intermediate holding device 24, 24', the gripper 8 can now be separated from the vacuum or briefly subjected to overpressure in order to release the adhesive film 3.
35

The folding channel 72 is now subjected to vacuum V2 to form a non-adhesive grip tab.

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As a result, the free end of the adhesive film 3 is sucked into the folding channel 72, as shown in Fig. 3C, whereby the end of the adhesive film 3 slides off the vertical leg of the housing section 69 of the suction body 68. This can be supported by weakening the vacuum Vl, whereby it is essential that the adhesive film 3 rests against the wall (leg of the suction body 68) at every stage of the process. This prevents premature contact between the adhesive surfaces of the adhesive tape facing each other. The high flow resistance of the housing section 69 prevents the vacuum in the suction body 68 from collapsing too quickly.

Once the end of the adhesive film 3 has been sucked into the folding channel 72, the strip 74 is moved upwards by means of the drive elements 75, as shown in Fig. 3D, in order to close the gap 72. As a result, the corresponding sections of the adhesive film 3, with their adhesive side facing each other, are pressed together and glued together. This section later forms a grip tab on the finished container, which initially, as shown in Fig. 3E, lies loosely in the suction channel 72 after it has been released.

As can be seen from Fig. 4C, the packages 2 are now pushed from the table 61 to the table 64 by means of the slider 63 between the pressure rollers 33, 34. The adhesive film 3 is placed around the bundle formed from the packages 2 and is tightly fastened to it by the pressure rollers 33, 34. The still free ends of the films 3 above the pressure roller 33 and below the pressure roller 34 are held on the intermediate holding device 24, 24' and slide with their uncoated back on the corresponding contact surfaces when the vacuum is switched on. The vacuum gripper 8 is relieved of pressure at this stage at the latest and therefore releases the adhesive film 3.

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As soon as the slider 63 has pushed the packs 2 almost completely through between the pressure rollers 33, 34, as shown in Fig. 4D, the table 61 is removed horizontally from the pressure roller in the direction of the arrow 62. First, the carrier 32 is moved upwards with the pressure roller 34 in order to attach the free end of the adhesive film 3 to the front of the container 2. The carrier 32 then moves back to its starting position and the carrier 31 is moved downwards in order to attach the grip tab end of the adhesive film 3 to the container. The pressure rollers 33, 34 run under pressure over the front of the container and fix the free ends of the banderol in place.

At the same time, the vacuum gripper 8 moves back to its starting position in a position away from the working plane (in a return plane), as indicated in Fig. 4D by a dot-dash path 80, while at the same time the vacuum gripper 9 pulls the adhesive film 3 off the roll 4 so that a piece of adhesive film with a corresponding length is positioned crossing the transport path of the next container. The length of the piece of adhesive film is defined by the distance of the knife 20 from the lower position 81 of the respective vacuum gripper 8, 9 at the time of cutting. The cut and folded blank is then positioned by the lower vacuum gripper 8, 9 in its insertion position.

0 The described working cycle is repeated continuously in the manner described, whereby containers are produced in rapid succession. The alternating operation of the vacuum grippers 8, 9 achieves a fast working method, which enables high machine utilization. The high surface roughness of the vacuum grippers 8, 9 ensures a secure grip of the adhesive film from the adhesive side as well as a problem-free

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The adhesive film is released safely from the vacuum grippers 8, 9 (safe handling), which enables a high movement speed of the vacuum grippers.

Instead of the transparent adhesive film, an adhesive film, a printed film or other material with adhesive or with thermally or otherwise activated adhesive can be used. Ready-made cuts are also possible.

It is also possible to create the grip tab at any other point on the band. This is possible, for example, by initially pulling the band material downwards by the gripper 8 just a section beyond the holding device 22. By switching on the vacuum V3 and V2 and then activating the drive device 75, the bar 74 presses a fold into the adhesive film that serves as a grip tab. By reducing the feed of the knife 20 so that it only cuts through the adhesive film with its teeth at certain points, or by activating a separate device, a perforation can be formed in the vicinity of the fold. Once the grip tab (fold) has been formed, the gripper 8 moves on and pulls off the film section with the required length.

To further increase the speed, the holding device 22 and the cutting device 7 can be moved synchronously with the gripper 8 (9) 0 to form the gripping tab. For this purpose, the holding device 22 and the cutting device 7 are moved in an oscillating manner by means of a corresponding linear guide and a drive device so that a synchronous movement section is created. The gripper 8 (9) does not need to stop to form the gripping tab, which results in a further increase in speed.

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In addition, to increase the machine speed and ensure that the cutting device 7 is sufficiently far away from the table 61, a new web section can be cut and folded while a banding process is still running. For this purpose, the cutting device 7 and the holding device 22 are positioned close to the deflection roller 11, even for short cuts.

The folding channel 72 can be arranged on a corresponding folding device at any point where a gripping tab is to be formed. This can be done vertically at the top, bottom, in between or at several points with a corresponding number of devices.

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Claims (22)

• ·*· ♦ Claims: 1. Device for producing packages from individual packages (2) by means of a banderole made of flat banderole material (3), with a transport device (63) by means of which several individual packages to be combined to form a bundle can be transported in a controlled manner along a transport direction (62) on a fixed transport path, with a removal device (6) which provides a section of banding material (3), positions it transversely to the transport direction (62) crossing the transport path and keeps it flexible, wherein the withdrawal device (6) has a first gripper means (8) connected to a drive device with a surface gripping effect, which is guided along a path by means of a guide device (41), and wherein the withdrawal device (6) has a second gripper means (9) connected to a drive device with a surface gripping effect, which is guided along the path by means of a guide device (42), wherein the gripping means (8, 9) can be moved past each other in opposite directions on the path. 2. Device according to claim 1, characterized in that the path is determined in such a way that the gripping means (8, 9) are each movable at least in sections in a working plane and in a return plane spaced from the working plane. - 19 - 3. Device according to claim 1, characterized in that the gripping means (8, 9) are vacuum gripping means. 4. Device according to claim 3, characterized in that the gripping means (8, 9) have a substantially flat contact surface (53) facing the banding material (3) and having suction openings (57). 5. Device, in particular according to claim 4, characterized in that the contact surface (53) has a roughened surface. 6. Device according to claim 5, characterized in that the contact surface (53) has a granular coating. 7. Device according to claim 1, characterized in that the gripper means (8, 9) are each movable by means of a 0 linear axis transverse to the transport direction (62). 8. Device according to claim 7, characterized in that the linear axes are arranged such that the gripper means (8, 9) are guided in a common working plane. 9. Device according to claim 8, characterized in that the gripping means (8, 9) can each be moved out of the working plane by means of an adjusting device (48, 51, 48', 51'). 10. Device according to claim 1, characterized in that the removal device (6) has a cutting device (7) by means of which banderole material blanks of defined length can be severed from a longer web. - 20 - 11. Device according to claim 10, characterized in that the cutting device (7) has a knife (20) which can be moved between a gripper means (8) located in the holding position and a holding device (22) towards and away from the web. 12. Device according to claim 11, characterized in that the gripping means (8) and the holding device (22) are in contact with different sides of the web. 13. Device according to claim 11, characterized in that the holding device (22) has a surface gripping effect and is a vacuum holding means. 14. Device according to claim 11, characterized in that the holding device (22) and the cutting device (7) are movable synchronously with the adhesive film (3). 15. Device according to claim 14, characterized in that the holding device (22) has a contact surface (69) permeated by pores and subjected to vacuum on the rear side. 16. Device according to claim 1, characterized in that the removal device for forming a 0 · grip tab has a holding device (22) for holding the banderole material at locations adjacent to the grip tab to be formed, that a vacuum-loadable folding channel (72) is provided in the area of the gripping tab to be formed and - 21 - that means (74, 51) are provided which narrow or close the folding channel (72) as required. 17. Device according to claim 16, characterized in that at least the holding device (22) and the folding channel (72) are connected to independently controllable vacuum sources (V1, V2). 18. Device according to claim 1, characterized in characterized in that an intermediate holding device (24, 24') is provided for temporarily holding a web section of banding material provided by the withdrawal device (6), which has contact surfaces extending essentially at right angles to the transport direction (62). 19. Device according to claim 18, characterized in that the intermediate holding device (24, 24') is a vacuum holding device, and that the gripper means (8, 0 9) and the intermediate holding device (24, 24') are in contact with different sides of the web. 20. Device according to claim 18, characterized in that the intermediate holding device (24, 24') has at least one length-adjustable section (26, 27). 21. Device according to claim 1, characterized in that the take-off device (6) has a rotating 0 driven receiving mandrel for the rotationally fixed reception of a roll (4) with banding material, from which the banding material is guided over fixed and loose rollers (11, 12, 13, 14; 16, 17), the loose rollers (16, 17) being mounted on a carrier (15) mounted on a linear guide for tensioning the banding material. - 22 - 22. Device according to claim 21, characterized in that the carrier (15) controls with its position a motor driving the receiving mandrel. - 23 -