Adaptable wrapping machine

Abstract

A curved guide (18) of a band-width-adjustable banderoling machine and a corresponding insert (20) allow for the adjustment of the curved guide (18) to bands of differing widths (19a,b,c). The curved guide (18) mounted on the banderoling machine has a band-guiding surface (181) that is limited on a first side (1811) and unlimited on a second side (1812). The insert (20) has a limiting surface (201), which is intersected by the extension of the band-guiding surface (181) in the assembled state. The limiting surface (201) is selected in such a way that, in the assembled state, the distance between the first side (1811) of the band-guiding surface (181) and the limiting surface (201) is adapted to the width of the desired band. The limiting surface (201) of the insert limits the band-guiding surface on the second side. Alongside an adjustable curved guide of this type, a banderoling machine preferably also comprises an adjustable band drive having an at least partially exchangeable band channel.

Description

Technical area

[0001] The invention relates to a banding machine that can use bands of different widths, an insert for adapting the guide arch of such a banding machine to the different band widths and a guide arch that is compatible with the insert. State of the art

[0002] Banding machines are used for packaging and labeling objects, such as food packaging. They wrap a flexible band, typically made of plastic or paper, which may be printed, around the object, pull it taut, seal it, and separate it from the band supply. Sealing is usually achieved by gluing or welding, with ultrasonic welding and heat welding being particularly suitable sealing methods.

[0003] Strapping machines work in a similar way: They place a significantly stiffer and thicker strapping band around objects and connect them. The primary goal is to bundle objects for storage and transport. These strapping bands are designed not for decorative purposes, but rather for stability. Strapping bands are typically narrower, thicker, and less flexible than the bands processed in banding machines. In addition, strapping bands are tighter and closed with greater stability.

[0004] Banding machines within the meaning of the invention should in particular be able to process bands with thicknesses of less than 300µm.

[0005] Banding machines should work quickly and process the thinnest, widest bands possible. Thin, wide bands offer plenty of space for labels, protect the object during banding, and minimize packaging. <ungsmenge. Die genauen Masse im Einzelfall, also Breite und Dicke des Bandes, hängen aber vom zu banderolierenden Objekt und der gewünschten Gestaltung des Bandes ab. Dünne, breite und flexible Bänder haben beim Verarbeiten die Tendenz in Spalten zu rutschen, in Führungen hängen zu bleiben und so einen Bandstau zu verursachen.

[0006] The present invention relates in particular to a sheet banding machine: In this machine, the band is guided around the object in a guide arc before it comes into contact with the surface of the object when pulled taut.

[0007] To avoid a user needing multiple machines to process straps of different widths, there have been various attempts to make strapping machines adaptable to strap widths: DE 100 26 197 A1 discloses a strapping machine that has a strap stop in the area of ​​the locking mechanism that can be adjusted to the strap width. US 4 502 911 uses an I-shaped clamp whose width is adjustable with a screw. <anal im Bereich des Antriebes einer Umreifungsmaschine. Beide Techniken funktionieren aber nur mit den vergleichsweise steifen Umreifungsbändern: Bänder für Banderolen knicken, wenn sie seitlich von einer Bandführung in eine vorgegebene Position gestossen werden soll und verklemmen in den Spalten, die I<anälen wie sie die US 4 502 911 vorschlägt, aufweisen.

[0008] For banding machines, DE 20 2017 004 069 U1 proposes exchanging the guide arch to enable the use of different bands. https: / / youtu.be / JggfP-kqeKkThe video available here, which introduces the "Proband V 1000" machine, shows that the adaptability of this machine is additionally achieved by replacing a guide coil.

[0009] While these known solutions can be used to adapt strapping machines, the solutions for banding machines are unsatisfactory, as they require slower operation to avoid errors, jams, and strap jams. When tensioning and retracting the strap, the guide spool of the Proband V 1000 is located behind the drive unit and thus cannot influence the strap's path inside this unit. The replaceable guide arch is also bulky and a component that is quite complex to manufacture.

[0010] Banding tapes are wide and thin. They therefore tend to stick to the inside of guide channels. Thanks to their flexibility, they quickly develop wrinkles when exposed to slightly increased local friction, which presses the tape even more tightly against the tape channel and further increases friction. The wrinkles overlap until the tape jams and clogs the tape channel. Similarly, jamming at the sides in a gap in the tape channel also increases the effect.

[0011] Small deviations from the optimal belt guidance therefore amplify themselves and this problem becomes more serious the thinner, the more flexible and the faster the belt is. Description of the invention

[0012] The object of the present invention is therefore to provide a banding machine and accessories that allow the banding machine to be adapted to different bands while operating reliably at high cycle rates. This adaptability should be achieved using compact and easy-to-manufacture parts.

[0013] The solution to the problem is defined by the features of claims 1 and 7.

[0014] According to the invention, the guide arch of a band-width-adjustable banding machine allows adaptation to bands of different widths. The guide arch mounted on the banding machine has a band guide surface. The band guide surface is restricted on the first side and unrestricted on the second side. The guide arch can be adapted to bands of different widths by inserting an insert. The guide arch mounted on the banding machine has a clear opening and external dimensions.

[0015] The insert, which allows the guide arch to be adjusted to straps of different widths, has a clear opening that is larger than or equal to the clear opening of the guide arch mounted on the banding machine. The insert has a limitation <ungsfläche auf, die im montierten Zustand von der Verlängerung der Bandführungsfläche geschnitten wird. Die Beschränl<ungsfläche wird derart gewählt, dass im montierten Zustand der Abstand zwischen der ersten Seite der Bandführungsfläche und der Beschränl<ungsfläche an die gewünschte Breite des Bandes angepasst ist.

[0016] The insert is significantly easier to manufacture and more compact than a complete guide arch. Since the insert's clear opening is larger than or equal to that of the guide arch, the size of the banded items is not affected by the insert. The insert replaces the conventional restriction on the second side of the band guide surface. By restricting the band guide surface on only one of its long sides, a wider band can extend beyond the band guide surface and thus be guided by a band guide surface that is narrower than the band itself.

[0017] It was surprisingly found that the restrictions <ungsfläche des Einsatzes oder der durch die Abdeckung realisierte Beschränkung der zweiten Seite auch Bänder die deutlich breiter sind als die Bandführungsfläche zuverlässig eingeschoben und gehalten werden können. Dies ist insbesondere dann der Fall, wenn das Band mittels Unterdruck an die Bandführungsfläche gepresst wird.

[0018] Should a belt nevertheless tend to twist or slip when inserted into a gap between the second side of the belt guide surface and the insert, the insert can be designed in a stepped manner: In this embodiment, the insert sets the belt guide surface in the area between the second side of the belt guide surface and the restriction <ungsfläche fort und füllt den Spalt somit aus.

[0019] The distance between the first side of the belt guide surface and the restriction <ungsfläche ist bevorzugt dann an die gewünschte Breite angepasst, wenn er nur wenig grösser als die Breite des Bandes ist. Der Abstand gleicht bevorzugt der Breite des Bandkanals im Bandantrieb für das entsprechende Band. Daher ist der Abstand bevorzugt das 1- bis 1.05- fache der Bandbreite.

[0020] In a preferred embodiment, the insert consists of a set of at least two parts. This insert has the shape of an arch, preferably open along at least one straight section. The external dimensions of this arch are less than or equal to the external dimensions of the band guide arch. The external dimensions of each individual part are smaller than the clear opening of the band guide arch.

[0021] This design allows the insert to be stored particularly compactly and inserted from the inside. The band guide surface can be enclosed by a cover that can remain in place even during assembly. This cover can be closed to the outside. The band guide surface is thus well protected, and its adaptability in the vicinity of the banding machine does not need to be taken into account. An interruption of the insert's curve on straight sections allows the insert parts to move freely during assembly and disassembly without impairing the insert's effectiveness. The openings should preferably make up less than 20% of the section length.

[0022] In another embodiment, the insert consists of a single part, which is pushed onto the belt guide surface from below, above, or from the side. If it is pushed in from above or from the side, the cover preferably has a corresponding gap. If the insert is pushed in from below, there is preferably a corresponding opening in the table.

[0023] An insert, consisting of one or more parts, can also be brought directly onto the belt guide surface from behind and mounted there. This type of mounting is particularly suitable for designs where there is no cover, the cover is formed by the insert in the rear wall area, or where the cover is removed to install the insert.

[0024] In a preferred embodiment, the insert comprises exactly four parts. Each of the parts forms a corner of a substantially rectangular arch.

[0025] This design combines convenient assembly, where the user hardly has to consider in which orientation he inserts the parts into the cover, with secure guidance of the tape: It is in particular the corners where the tape rests on the correctly aligned and arranged restrictions. <ungsflächen angewiesen ist.

[0026] In a preferred embodiment, each of the parts of the insert is equipped with a first half of a fastening system.

[0027] In a preferred embodiment, the guide arch is equipped with a second half of the fastening system for each of the parts of the insert.

[0028] The fastening system allows the insert to be attached and removed from the guide arch without the need for tools.

[0029] The fastening system ensures that the insert and the band guide surface remain at the desired distance from each other during operation, preventing any movement that could affect functionality. Tool-free fastening allows for convenient and quick adjustment of the banding machine, even in locations where tools are unavailable.

[0030] In a preferred embodiment, the fastening system is a locking system. The first half of the locking system preferably comprises a blind hole equipped with a spring-loaded pressure piece. The corresponding second half of the locking system comprises a locking pin mounted on the guide arch with a corresponding groove. The first and second halves of the locking system can interact.

[0031] Preferably, the second half of the locking system comprises, in particular, a locking pin with a groove mounted on the guide arch. The corresponding first half of the locking system comprises a blind hole formed in the parts of the insert and equipped with a spring-loaded pressure piece. The first and second halves of the locking system can interact.

[0032] In a particularly preferred embodiment, the locking system enables twist-proof fastening. For this purpose, either the first half of the locking system comprises two or more blind holes equipped with spring-loaded pressure pieces, and the second half of the locking system comprises two or more socket pins, each provided with a groove, which are linearly independent of one another in their respective directions of extension. Or the blind hole equipped with the spring-loaded pressure piece is formed in a region of the insert that is not rotationally symmetrical in the strict sense about the direction of extension of the blind hole, and the socket pin provided with a groove is attached in a complementarily shaped region on the guide arc, which is also not rotationally symmetrical in the strict sense about the direction of extension of the socket pin. These complementary regions on the guide arc and on the parts of the insert can interact and thereby prevent twisting.

[0033] The bolt and blind hole allow for a stable connection that is unlikely to loosen even under vibration, but can be easily released by the user by pushing or pulling. The user can feel the click into place and confirms the fastening. If only a single bolt / blind hole is used, <loch Kombination für den Einsatz genutzt, so kann es unter ungünstigen Bedingungen zu einer Rotation des Einsatzes um dieses Bolzen kommen. Um dies zu verhindern und eine präzise Bandführung zu gewährleisten, kann entweder eine zweite Bolzen / Sacl<loch Kombination genutzt werden oder aber der Befestigungsbereich ist so gestaltet, dass eine Rotation um den Bolzen durch einen Formschluss ausgeschlossen wird. Bei im engeren Sinne rotationssymmetrischen Bereichen handelt es sich um Rotationskörper um die Bolzenachse oder um die Ausdehnungsrichtung des Sacklochs.An area that is not rotationally symmetrical in the narrow sense about the direction of extension of the blind hole is, for example, a section of a square pyramid.

[0034] In one of the embodiments, each of the parts of the insert is provided with a handle recess.

[0035] This results in intuitive instructions for assembling and disassembling the insert: Since the user holds the handle recess in his hand, this provides an orientation of the insert relative to the guide arch.

[0036] The use of a handle recess also has the advantage over a protruding handle that the insert can be designed like a plate and the parts of one or more inserts can be stacked particularly easily and stored in a space-saving manner.

[0037] In a preferred embodiment, the guide arch comprises a cover. The cover surrounds the tape guide surface and a volume for receiving the insert.

[0038] The cover protects the tape guide surface from environmental influences and impacts. At the same time, the cover can serve as a support structure for the tape guide surface and / or for positioning the insert. For a positioning function, the cover can, for example, have grooves or rail-like structures into which the insert parts are inserted. If the cover serves both as a support structure for the tape guide surface and for positioning the insert, the insert can be positioned with high precision relative to the tape guide surface.

[0039] In another embodiment, the band guide surface is self-supporting and used without a cover. In this embodiment, the insert is mounted directly to the band guide surface or to the table of the banding machine.

[0040] In a preferred embodiment of the guide arch, the distance between the first and second sides of the belt guide surface is adapted to the width of the narrowest belt. An insert can be mounted relative to the belt guide surface such that the distance between the restriction <ungsfläche und der ersten Seite der Bandführungsfläche an die Breite eines jeweils gewünschten Bandes angepasst ist. In einer besonders bevorzugten Ausführungsform ist der Abstand zwischen der Innenwand der Abdeckung und der ersten Seite der Bandführungsfläche an die Breite des breitesten Bandes angepasst.

[0041] The band guide surface supports and guides the band particularly well in the guide curve. To achieve reliable guidance, it is therefore advantageous if as much of the band as possible rests on the band guide surface. Reliable band guidance is also promoted by a restriction on both sides that is adapted to the width of the band. By selecting the band guide surface to be just as wide as the narrowest band to which the banding machine is to be adapted, these two requirements are optimally combined. The use of the cover as a restriction <ungsfläche für die breitesten Bänder hat zudem den Vorteil, dass für die breitesten Bänder kein Einsatz vorgehalten werden muss.

[0042] According to the invention, a band width adjustable banding machine suitable for banding an object with different bands comprises an adjustable band drive and a band width adjustable guide arch.

[0043] The belt drive comprises a belt channel and at least one drive roller. The drive roller is designed to drive the various belts in the area of ​​the belt channel. The belt channel is at least partially interchangeable and can be selected to match the width of one of the different belts. This allows the belt drive to be adapted to the different belts.

[0044] Due to its partial interchangeability, the band channel can preferably also be adapted to bands of different thicknesses, so that the banding machine is suitable for using bands that differ in their width and thickness and can preferably be thinner than 300 µm as banding material.

[0045] The invention guides the belt in the belt channel, and thus at the point where it is accelerated. Since each section of the belt is essentially brought onto the correct path independently, guidance errors at other points, for example, in the guide curve, can be absorbed and compensated for by the preceding and following belt sections: The error is then <elt sich nicht auf, sondern schwächt sich ab. Bevorzugt wird zudem der Bandkanal nicht nur an die Breite des Bandes, sondern auch an die Banddicke angepasst. Damit wird ein Faltenschlagen des Bandes verhindert: Dem Band fehlt der Platz dazu.

[0046] Thus, by adjusting the belt channel to the width and preferably the belt thickness, the belt drive can be adjusted and, by adjusting the belt drive, the banding machine can also be adjusted.

[0047] The band channel is preferably designed so that its outer surface is essentially the same in all adaptation variants, and only the hollow space for the band running inside it is adapted to the respective band. The inner cross-section of this hollow space is preferably slightly larger than the cross-section of the band for which it is intended, so that the band is guided securely, but at the same time does not adhere excessively to the I <analwänden reibt.

[0048] For the purposes of this application, "interchangeable" means interchangeability for a user of the machine, i.e., a non-technical person. In particular, the necessary actions should be performable without or with only a few common tools, such as a single socket wrench, and the parts and attachment points should be easily accessible and graspable.

[0049] Preferably, the drive roller remains mounted and in its operating position while the belt channel is at least partially replaced.

[0050] In a preferred embodiment of a banding machine according to one of the preceding claims, the external dimensions of the belt drive and the position of a first longitudinal side of the band <anales relativ zum Bandantrieb durch die Anpassung an Bänder verschiedener Breiten nicht verändert. Die Anpassung des Bandantriebs an Bänder verschiedener Breiten wird durch die Anpassung der Position einer zweiten Längsseite des Bandkanals relativ zum Bandantrieb erreicht. In einer besonders bevorzugten Ausführungsform wird eine Anpassung des Bandantriebs an verschiedene Banddicken durch die Anpassung der Höhe der I<analdecl<e relativ zum Bandantrieb erreicht.

[0051] With a belt drive according to this embodiment, all belts run with their first edge along the first longitudinal side of the belt channel. In a banding machine, the belt channel of the belt drive guides the belt onto the belt guide surface of the guide arch. In the present embodiment, the belt guide surface is only limited on the first side, while the limitation on the second side can be adjusted using the insert. The first side of the belt channel and belt guide surface thus represents a guide surface for all belts, regardless of their width and without the positioning of the belt drive and the belt guide surface having to be changed relative to one another during adjustment. Belts of any width utilize the good guidance offered by the belt guide surface as much as possible for the respective belt. A banding machine according to this embodiment is therefore particularly reliable and easy to adapt.

[0052] In a preferred embodiment of a banding machine, the I <analseiten und die Kanaldecke des Bandkanals durch Seitenbauteile realisiert. Alle Seitenbauteile dieser Ausführungsform sind austauschbar, während der Bodenbauteil in der Banderoliermaschine verbaut bleibt. Das Bodenbauteil ist mit mindestens einer Kerbe und zwei Randstufen ausgestattet, welche sich parallel zur Längsachse über die gesamte Kanallänge erstrecken. Der Abstand der einander zugewandten Kanten der mindestens einen Kerbe und einer der Randstufen ist an die Breite eines schmaleren Bandes angepasst und der Abstand der einander zugewandten Kanten der beiden Randstufen voneinander ist an die Breite des breitesten Bandes angepasst. Bevorzugt gibt es für jedes der Bänder ein vorderes und ein hinteres Seitenbauteil, deren die I<analseitenwände bildende Abschnitte in die entsprechende Kerbe und die zugeordnete Randstufe des Bodenbauteils eingreifen können.The base component and the side components complement each other to form a belt channel with an internal cross-section with a width and a height that is adapted to the width and preferably the belt thickness of one of the different belts.

[0053] In this preferred embodiment, the adjustment of the belt channel is thus achieved solely by replacing the side component(s). All side components are positioned relative to the base component by the edge steps. Since the I <analseitenwände bildende Abschnitte des Seitenbauteils unterhalb des I<analbodens den Bodenbauteil kontaktieren, kann das geführte Band nicht zwischen Boden- und Seitenbauteil eingeklemmt werden und wird somit besonders zuverlässig geführt.

[0054] In a preferred embodiment, the drive roller and / or its counterpressure roller has multiple support areas. During operation with the belt inserted, there are two distances that should be equal. One distance is the distance between the first edge of the belt and the first outer edge of the support areas closest to this first edge, resting on the belt. The other distance is the distance between the second edge of the belt and the second outer edge of one of the support areas closest to this second edge, resting on the belt.

[0055] In a particularly preferred embodiment, these distances are the same for all intended widths of bands.

[0056] In the simplest form of such a drive roller, a first support area has the width of the narrowest belt minus twice the width of a free area. This first support area is at a distance of the width of a free area from the I <analseitenwand auf der ersten Seite entfernt und kommt damit zentriert auf dem schmalsten Band zu liegen. Der zweite Auflagebereich bestimmt seine Ausdehnung und Position aufgrund der nächstgrösseren Breite eines der anpassbaren Bänder: Die zweite Aussenkante des zweiten Auflagebereichs ist die Breite einer Freifläche von dem zweiten Rand dieses Bandes entfernt. Die erste Aussenkante des zweiten Auflagebereichs ist mehr als eine Breite einer Freifläche von der zweiten Aussenkante des ersten Auflagebereichs entfernt und berührt daher das schmalste Band nicht. Auf dem Band mit der nächstgrösseren Breite liegen somit im Betrieb sowohl der erste als auch der zweite Auflagebereich auf.In this operating situation, a free area remains on the first side of the first support area, the width of which corresponds to the width of the free area on the second side of the second support area, with the belt not touching any support area on either side. Additional support areas can be dimensioned and positioned in a similar manner.

[0057] A drive roller structured in this way drives belts of different widths evenly and thus allows particularly reliable operation of the banding machine.

[0058] In a particularly preferred embodiment, an encoder wheel is configured to form an I <analseite hin versetzt angeordnet, dass es im Betrieb mit dem schmalsten Band über seine gesamte Breite auf diesem Band aufliegt.

[0059] Since an encoder wheel is designed to minimize its influence on the belt's movement and serve solely to measure its length, a symmetrical arrangement is unnecessary. However, for reliable measurements, it is advantageous to have complete contact with belts of all widths. The offset arrangement therefore allows reliable measurement values ​​to be recorded for all belts of all widths with just one encoder wheel in a fixed position.

[0060] Adapting the banding machine according to the invention to a band of a desired width involves adjusting the band drive and the guide arch to the width of the desired band. Adapting the band drive to the width of the desired band is achieved, in particular, by at least partially replacing the band channel. Adjusting the guide arch to the width of the desired band is achieved by inserting an insert.

[0061] In a particularly preferred embodiment, the user only needs to have the appropriate side parts of the belt channel and the corresponding insert at hand in order to quickly and without tools adapt the machine to the width of a desired belt.

[0062] In one embodiment, the belt channel has recesses through which the drive roller can act on a belt guided inside the belt channel.

[0063] In particular, an input drive roller is arranged at the inlet of the belt channel, which can act on the belt.

[0064] Particularly preferably, both the drive roller and the input drive roller are each assigned a counterpressure roller. Thus, the belt can be clamped between the drive roller and its associated counterpressure roller, and between the input drive roller and its associated counterpressure roller, and can be accelerated and / or decelerated by driving the rollers.

[0065] The tape drive is preferably equipped with an encoder that measures the length of tape wrapped around the object. The encoder records the movements of an encoder wheel to determine which length of tape has been fed in and / or retracted. This encoder determines the revolutions of an encoder wheel with a known diameter. Since the tape should not slide over the wheel for the measurement, but should actually set it in motion, the encoder wheel should preferably be provided with a counterpressure. <rad zugeordnet. Dies reduziert den Schlupf und damit einhergehende Messfehler. Der Bandkanal weist bevorzugt Ausnehmungen für Encoderrad und gegebenenfalls für das Gegendrucl<rad auf. Bevorzugt ist das Endcoderrad zwischen der Eingangsantriebswalze und der Antriebswalze angeordnet.

[0066] If the drive roller drives the belt inside the belt channel, placing the belt on the drive roller is simplified: Once it is in the I <anal, so liegt es auch in Bezug auf den Antrieb richtig. Ausserdem ist die Führung des Bandes so besonders präzise und richtungsunabhängig: Sowohl beim Einschiessen als auch beim Zurückziehen und Straffen wird das Band vor und nach dem Angriffspunkt der Antriebswalze geführt.

[0067] An input drive roller has several advantages. On the one hand, it makes threading the ribbon easier: If it is on the easily accessible input drive roller, it pushes it precisely and evenly into the I <anal. Dem Nutzer bleibt das weitere Hineinstossen des Bandes von Hand erspart. Andererseits verhindert die Nutzung der zwei Antriebswalzen, also der Antriebswalze und der Eingangsantriebswalze, einen Bandstau, da das Band zwischen ihnen immer von der einen Seite gestossen und von der anderen gezogen wird. Da die Antriebswalze und die Eingangsantriebswalze bevorzugt synchronisiert sind, wird ein im Bandkanal lokal festhängendes Band rasch wieder gespannt. Schliesslich verteilt sich auf diese Art und Weise auch die Kraftübertragung auf eine grössere Fläche des Bandes. Da für eine hohe Taktzahl das Band stark beschleunigt und wieder abgebremst werden muss, schont eine verteilte Kraftübertragung das Band und gegebenenfalls seine Bedruckung.

[0068] The use of counter pressure rollers also helps to protect the belt and improve the power transmission: Without them, the belt is pushed against an I <analwand gedrückt und darüber gezogen. Zudem kann eine elastische Beschichtung der Gegendruckwalze Schwankungen der Banddicke ausgleichen und den Schlupf des Bandes verringern.

[0069] To ensure that the drive roller and, if applicable, the input drive roller and the counter-pressure rollers grip the belt well, regardless of the belt thickness, the counter-pressure rollers can be spring-mounted, for example, or equipped with an elastic running surface, e.g. made of rubber. With such solutions, the machine user does not need to make any adjustments to the rollers or their bearings. In another embodiment, however, the counter-pressure rollers are also replaceable. They can then be attached to the replaceable part of the belt channel or be replaceable independently of the replaceable part of the belt channel and their diameter can be adapted to the belt thickness. The materials of the running surfaces and the belt can also be selected to match each other, so that the belt has little slippage and, on the other hand, the belt material and its printing are not damaged.

[0070] In a preferred embodiment, the strip channel has a substantially rectangular inner cross-section. The inner cross-section preferably has a width that corresponds to the sum of the width of the strip and a width tolerance of preferably less than 5% of the strip width. This width is defined by I <analseitenwände bestimmt. Der Innenquerschnitt hat bevorzugt eine Höhe, welche der Summe der Dicke des Bandes und einer Höhentoleranz von bevorzugt mehr als 0.2 mm und weniger als dem 10-fachen der Banddicke entspricht. Diese Höhe wird durch einen I<analboden und eine I<analdecl<e bestimmt. Die I<analseitenwände sind in dieser Ausführungsform entlang ihrer Höhe ununterbrochen.

[0071] The height and width of the channel should be selected so that the belt is guided safely, but not to the I <analwänden reibt.

[0072] Preferred banding tapes have a width between 25 mm and 100 mm and a thickness between 50 and 250 µm.

[0073] For these belts, it has proven useful to make the belt channel less than 5% wider than the respective belt, but particularly preferably about 1 mm wider than the belt width.

[0074] It has also been found that the tape can be guided particularly well when the height of the tape channel is approximately 0.2 mm greater than the tape thickness. However, if the tape channel is higher than about 10 times the tape thickness, reliability decreases.

[0075] To prevent the straps from <analseitenwänden hängen bleiben oder sich in Spalten verklemmen, sind die I<analseitenwände entlang ihrer Höhe ununterbrochen. Es gibt also keine Spalten, die sich in Laufrichtung des Bandes erstrecken. Hingegen ist es durchaus möglich und im Bereich der Antriebswalze oder eines Gegendruckwalze auch bevorzugt, dass die I<analseitenwände sich nicht über die gesamte Höhe des I<anales erstrecken oder sogar ganz fehlen. Durch derartig verkürzte oder fehlende I<analseitenwände kann eine breite Antriebswalze oder eine breite Gegendruckwalze auch für den Antrieb schmaler Bändern genutzt werden.

[0076] A possibility in height uninterrupted I <analseitenwände herzustellen, ist es, den Bandkanal als Ganzes aus einem Werkstück zu fertigen.

[0077] In a preferred banding machine, the I <analseitenwände und bevorzugt die I<analdecl<e durch ein oder mehrere Seitenbauteile realisiert. Ein I<analboden wird durch einen Bodenbauteil realisiert. Dabei liegen alle Seitenbauteile unterhalb des I<analbodens an dem Bodenbauteil an.

[0078] In another preferred embodiment, the I <analseitenwände und bevorzugt der I<analboden durch ein oder mehrere Seitenbauteile realisiert und ein Decl<enbauteil realisiert die I<analdecl<e. Alle Seitenbauteile liegen oberhalb der I<analdecl<e an dem Decl<enbauteil an.

[0079] In a further embodiment, the I <analseitenwände durch Seitenbauteile realisiert, der I<analboden durch ein Bodenbauteil und die I<analdecl<e durch ein Decl<enbauteil und die Seitenbauteile liegen oberhalb der Kanaldecke am Decl<enbauteil an und unterhalb des I<analbodens am Bodenbauteil.

[0080] The belt channel had to be manufactured very precisely. This is made easier by the multi-part mold. To ensure uninterrupted I <analseitenwände zu erreichen, setzen die Wände ober- und / oder unterhalb des Innenquerschnitts des Bandkanals an. Für das geführte Band ist der Ansatzbereich der Seitenbauteile somit nicht erreichbar und die Gefahr, dass das Band eingeklemmt wird, sinkt.

[0081] In one embodiment, the banding machine comprises a housing with a band insertion opening. The band drive is arranged inside the housing. In operation, the band is preferably guided from a supply roll or a band storage device through the band insertion opening to the band drive located inside the housing. In this embodiment, at least part of the band channel can be replaced by being pulled out through the band insertion opening and reinserted into its operating position.

[0082] This design utilizes an existing opening in the housing to allow for interchangeability. This minimizes user contact with the inner workings of the machine. The likelihood of incorrect operation is reduced and user comfort is increased.

[0083] In one embodiment, all actions required to adjust the belt drive can be performed from a single side or through the belt insertion opening. In this embodiment, the drive roller and, if applicable, the input drive roller and the drives of the drive roller and the input drive roller remain unchanged in their operating position while the adjustment is performed. Preferably, the counterpressure roller of the drive roller is coupled to the drive roller and is thus driven synchronously. A counterpressure roller of the input drive roller, if present, and / or the counterpressure <rad des Encoders laufen hingegen bevorzugt mit. Besonders bevorzugt wird die Koppelung von der Antriebswalze und ihrer Gegendruckwalze durch auf den Achsen von Antriebswalze und ihrer Gegendruckwalze montierten Zahnräder realisiert.

[0084] This design has the advantage that the adjustment of the belt drive is easy to carry out and the user does not have to change his location or reach deep into the machine.

[0085] If the drive roller and the counter-pressure roller are both driven synchronously, the belt is accelerated particularly gently and precisely. Since the belt channel preferably runs both in front of and behind the drive roller and can preferably be adjusted to the belt on both sides of the drive roller, the drive roller and / or its counter-pressure roller represent an obstacle to interchangeability. A simple and robust solution is to remove the counter-pressure roller from its operating position for replacement, for example by taking it away, lifting it or moving it. A simple way of coupling the counter-pressure roller and the drive roller in the operating position, without tools or adjustment, is to equip both rollers with gears that mesh with each other in the operating position. This way, the motor can drive the drive roller and, if applicable, the input drive roller directly, and the drive roller can in turn drive its counter-pressure roller.All rollers driven directly by the motor can be arranged on one side of the belt channel and remain firmly mounted and connected to the motor during replacement.

[0086] In a preferred embodiment, only a portion of the belt channel is replaceable. A belt drive that achieves its adaptability only by replacing a portion of the belt channel is referred to below as a belt drive of the first type.

[0087] In a preferred embodiment of a band channel of the first type, the I <analseitenwände und die I<analdecl<e durch Seitenbauteile realisiert. Alle Seitenbauteile sind bei dieser Ausführungsform austauschbar, während der Bodenbauteil, der den I<analboden realisiert, in der Banderoliermaschine verbaut bleibt.

[0088] In this embodiment, the relative position of the base component and the drive roller remains unaffected by the adjustment. User errors are virtually impossible, making the first-type belt drive particularly reliable. Furthermore, a first-type belt drive requires hardly any more space in the machine than a conventional belt drive. A first-type belt drive can therefore be retrofitted to some existing machines by having a specialist replace the conventional belt drive with a first-type belt drive.

[0089] In one embodiment of a belt channel of the first type, the belt channel is formed by precisely one front and one rear side component and one base component. The front side component completes the belt channel in front of the drive roller in the belt feed direction, and the rear side component completes the belt channel behind the drive roller.

[0090] The two-part design of the side component is particularly helpful when a counter-pressure roller is assigned to the drive roller: This means that the rear side component can be pushed from the rear to the point where the drive roller and counter-pressure roller are closest to each other, and the front side component from the front. The rollers therefore do not necessarily have to be removed. However, it can simplify replacement if the counter-pressure roller is removed before being pushed in. Since the counter-pressure roller can simply be pushed onto its axle, it can be easily removed and reattached. Preferably, the counter-pressure roller is secured on its axle to prevent it from slipping. This securing device can, however, be designed without tools or can be released using a simple socket wrench, for example in the form of a screw with a wider head or as a locking system.

[0091] In one embodiment of a belt channel of the first type, the base component is provided with several pairs of notches. These notches are symmetrical to the longitudinal axis of the I <anals angeordnet und erstrecken sich parallel zur Längsachse über die gesamte Kanallänge. Die einander zugewandten Kanten eines Paares von Kerben haben jeweils einen Abstand voneinander, der an die Breite von jeweils einem der unterschiedlichen Bänder angepasst ist. In dieser Ausführungsform gibt es für jedes der Bänder ein vorderes und ein hinteres Seitenbauteil. Die I<analseitenwände bildende Abschnitte der Seitenbauteile können in das entsprechende Paar von Kerben des Bodenbauteils eingreifen, so dass sich Bodenbauteil, vorderes und hinteres Seitenbauteil zu einem Bandkanal mit einem Innenquerschnitt mit einer Breite und einer Höhe ergänzen, die an die Breite und Dicke eines der unterschiedlichen Bänder angepasst sind.

[0092] The notches thus fulfil two functions: On the one hand, they ensure that the side components below the I <analbodens an dem Bodenbauteil anliegen. Andererseits führen sie die Seitenbauteile und erlauben so auf einfache Art und Weise die nötige, präzise Positionierung. Liegt ein Paar von Kerben am ersten und zweiten Rand des Bodenbauteils, so stellen dieses Paar von Kerben Randstufen dar.

[0093] In one embodiment of a belt channel of the first type, the front side component is connected to the counterpressure roller to the input drive roller and preferably to a counterpressure <rad zu einem Encoderrad ausgestattet.

[0094] The encoder is preferably arranged between the input drive roller and the drive roller. Therefore, the belt channel preferably has, particularly in the area of ​​the front side component, also for the encoder wheel and the counterpressure <rad Ausnehmungen auf.

[0095] The first type of band channel is particularly useful when the side components can be simply pushed or placed on it without having to move or remove other components of the banding machine. Therefore, a simple solution is to mount the passively driven wheels and rollers directly at the corresponding location on the side component. This also has the advantage that the diameter of the counterpressure <rad und Gegendruckwalze zur Eingangsantriebswalze auf die gewünschte Banddicke und, falls erwünscht, auf das Bandmaterial angepasst gewählt werden können.

[0096] In one embodiment of a belt channel of the first type, the front side component can be pushed in and pulled out through the belt insertion opening, while the rear side component is particularly preferably equipped with a laterally projecting handle with which it can be removed from the base component and rearranged transversely to the longitudinal direction of the operational belt channel.

[0097] This makes replacing the side components particularly convenient and reduces the risk of incorrect operation.

[0098] Preferably, the side components of a belt duct of the first type can be fastened to the base component with clamps that can be removed and attached without tools.

[0099] Although the incorporation of the side components into the notches and / or the edge steps of the floor component prevents the side components from slipping sideways, the side components in this simplest form are not secured against displacement in the direction of the channel's longitudinal axis or against lifting off. If there are neither counterpressure <rad noch Gegendruckwalze am Seitenbauteil, so sind die Kräfte die auf es wirken eher gering. Dennoch hilft eine Sicherung die Zuverlässigkeit der Banderoliermaschine zu erhöhen. Mit den bevorzugten Klammern lässt sich diese Sicherung erreichen. Falls sowohl Seitenbauteile als auch Bodenbauteil mit Nuten oder anders gestalteten Vorrichtungen zur Aufnahme von U-förmigen Klammern ausgerüstet sind, kann eine Sicherung durch Aufschieben derartiger Klammern besonders zuverlässig geschehen. Gegen ein Abrutschen können die Klammer ihrerseits mit einem federgelagerte Stift oder einer von Hand anziehbaren Schraube gesichert sein.

[0100] Preferably, there are exactly three clamps. A first clamp engages between the input drive roller and the encoder wheel, a second clamp engages between the encoder wheel and the drive roller, and a third clamp is located on the other side of the drive roller.

[0101] The third clamp of this design is the only one that secures the rear side component.

[0102] In this embodiment, the first and second clamps are arranged in front of and behind the encoder wheel and thus allow the counter pressure <rad das Band mit dem gewünschten Druck gegen das Encoderrrad presst.

[0103] This allows for optimal fastening for correct functioning using the smallest possible number of simply shaped clamps that are therefore inexpensive to manufacture and easy to replace.

[0104] In a further embodiment of a banding machine, the band channel is replaceable as a whole.

[0105] A belt drive that achieves its adaptability only by replacing the belt channel as a whole is referred to below as a second type belt drive.

[0106] Because the belt channel is not assembled by the user but is available as a complete unit, it can be manufactured more precisely. Replacement is also made even easier.

[0107] In a preferred embodiment of a belt drive of the second type, the belt channel is designed as a single piece. The base component of the belt channel has a plurality of parallel recesses in the area of ​​the drive roller and the input drive roller. Preferably, the base component has a further recess for an encoder wheel.

[0108] In this embodiment, the surfaces of the drive roller and input drive roller are structured such that, in the operating state, parts of the surfaces protrude through the recesses in the base component and can come into contact with a belt guided in the belt channel. The counterpressure rollers preferably have a substantially unstructured surface.

[0109] A one-piece design refers to a component that is delivered by the manufacturer in one piece and is not intended to be disassembled by the user. However, it can certainly be made of different materials and assembled from different components during its manufacture.

[0110] Since the belt channel is to be replaced as a whole, it preferably has a certain degree of inherent stability. To achieve this and also to enable the greatest possible contact between the drive roller or input drive roller and the belt, the use of a large number of recesses is particularly suitable. To ensure that the rollers are not hindered in their action by the webs separating the recesses, the running surfaces of the rollers themselves are preferably structured. On the I <analoberseite hingegen bietet sich die Nutzung einer grossen Ausnehmung, die der Breite der Gegendruckwalzen entspricht, an: eine weitere Steigerung der Stabilität hat sich im praktischen Einsatz als nicht notwendig herausgestellt, während die Grösse der Ausnehmung das Einlegen des Bandes und die Wartung des Bandkanals vereinfacht.

[0111] In one embodiment, both the floor component and the Decl <enbauteil mit mehreren parallel zueinander liegenden Ausnehmungen versehen, die im Bereich der Antriebswalze und ihrer Gegendruckwalze sowie bevorzugt der Eingangsantriebswalze und ihrer Gegendruckwalze liegen. Dabei sind sowohl die Antriebswalze als auch ihre Gegendruckwalze und bevorzugt die Eingangsantriebswalze und ihre Gegendruckwalze strukturiert.

[0112] In another embodiment, the Decl <enbauteil des Bandkanals die Vielzahl der Ausnehmungen auf und die Gegendruckwalzen sind strukturiert, während das Bodenbauteil nur eine einzelne, breite Ausnehmung aufweist, durch welche die unstrukturierten Antriebswalzen auf das Band wirken können.

[0113] The structuring of the rollers consists in particular of several grooves running parallel to each other and circumferentially, the width of which is only slightly larger than the webs that form the recesses in the base component or in the Decl <enbauteil voneinander trennen. Die durch eine der Rillen aufgespannte Ebene steht dabei bevorzugt senkrecht zur Achse der Walze.

[0114] In a preferred embodiment, the structuring of the drive roller(s) and / or their counterpressure rollers is determined by the support areas, which are adapted to the different strip widths. The recesses of the base component are also selected accordingly in this preferred embodiment.

[0115] In a preferred embodiment of a belt drive of the second type, the counterpressure rollers are connected to the drive roller and, if applicable, to the input drive roller and the counterpressure <rad zum Encoderrad an einem Hebelmechanismus gelagert. Der Hebelmechanismus erlaubt es, die Gegendruckwalzen und gegebenenfalls das Gegendrucl<rad etwas anzuheben, um ein Herausziehen oder ein Einschieben des Bandkanals, bevorzugt durch die Bandeinführöffnung, zu ermöglichen.

[0116] Since the entire belt channel is replaceable in a second-type belt drive, a bracket permanently mounted in the machine helps hold the belt channel in the operating position. The belt channel is then inserted into such a bracket during replacement. This bracket should ideally ensure that the belt channel is in the correct position relative to the drive roller in the operating position. Furthermore, the bracket can also support the input drive roller and the encoder wheel. Such a bracket essentially represents an interface between the active parts of the belt drive, equipped with motors and sensors and thus connected to the power supply and control system, and the replaceable, preferably passive, parts.

[0117] The drive rollers accelerate and decelerate the belt by pressing it against a resistance. This is preferably a counterpressure roller, but it can also be a wall of the belt channel.

[0118] Are counter pressure rollers and possibly a counter pressure <rad am Bandkanal befestigt oder dient der Bandkanal selbst als Gegendruckfläche, so sollte die Halterung den Bandkanal bevorzugt gegen die Antriebswalzen drücken, damit er eben diese Gegendrucl<funl<tion ausüben kann.

[0119] Alternatively, the holder can also accommodate counterpressure rollers and, if necessary, the counterpressure <rad halten und der Bandkanal einzig der Führung des Bandes dienen. Da der Bandkanal höher ist als die Dicke des Bandes und damit auch höher als der Abstand zwischen Gegendruckwalze und Antriebswalze im Betriebszustand, lässt sich der Abstand zwischen den Walzen für das Einschieben des Bandkanals bevorzugt vergrössern. Ein bevorzugter Hebelmechanismus erlaubt ein solches Anheben der Gegendruckwalzen und gegebenenfalls des Gegendrucl<rads komfortabel und mit nur einer Hand. So bleibt dem Nutzer seine zweite Hand um den Bandkanal einzuschieben oder herauszuziehen.

[0120] If the lever mechanism is pre-tensioned in a particularly preferred embodiment, the counter-pressure roller and optionally the counter-pressure <rad mit einem gewünschten Druck gegen die Antriebswalze und gegebenenfalls Eingangsantriebswalze und das Encoderrad gedrückt werden, wenn der Hebel nicht betätigt wird. Damit passt sich dieser Teil des Antriebs automatisch an die Banddicke an.

[0121] In a preferred embodiment of a belt drive of the second type, the belt channel is secured in its operating position with a clamp that can be removed and attached without tools in its position relative to the drive roller.

[0122] It is particularly preferred to secure it with a single clamp.

[0123] A single clamp, preferably U-shaped, is slid onto the band channel directly behind the holder and secured with a screw or pre-tensioned pin. This prevents the band channel from sliding out of the banding machine against the band feed direction. Gravity generally prevents the band channel from sliding in too far. In addition, the band channel can preferably be equipped with a stop that prevents it from being pushed in too deeply due to contact with the holder.

[0124] In a preferred embodiment, the lever mechanism of the holder carries a pin which engages in a corresponding recess on the edge of the strap channel and thus secures the strap channel against slipping.

[0125] In a preferred embodiment, a belt drive of the first type is provided with a lever mechanism which has either pressure surfaces or counter-pressure rollers and optionally a counter-pressure <rad relativ zum Bodenbauteil anheben und das Einschieben von einem oder mehreren Seitenbauteilen ermöglicht und dann anschliessend die Seitenbauteile gegenüber dem Bodenbauteil fixiert.

[0126] In a preferred embodiment of a belt drive of the second type, its I <analseitenwand, I<analdecl<e und I<analboden im Bereich der Antriebswalze im Wesentlichen unterbrochen, so dass sich der Bandkanal seitlich in die Halterung einschieben lässt.

[0127] Further advantageous embodiments and combinations of features of the invention emerge from the following detailed description and the entirety of the patent claims. Short description of the drawings

[0128] The drawings used to explain the embodiment show: Fig. 1Sketch of a banding machine Fig. 2Schematic structure of a band drive Fig. 3Guide arch with an inserted insert consisting of four parts, in a front view Fig. 4aGuide arch with second halves of two locking systems in a sectional view, with the view directed perpendicular to the band guide surface Fig. 4bGuide arch according to Figure 4a , whereby the widest band to which the banding machine can be adapted is inserted. Fig.4cGuide arch according to Figure 4a , whereby a multi-part insert is also used to adapt the banding machine to a medium-width band, also shown. Fig.4dGuide arch according to Figure 4a , whereby a multi-part insert is also used to adapt the banding machine to the narrowest band, which is also shown. Fig.5a,bThe guide arch according to Figure 3during insertion of the insert parts. Fig. 6 A locking connection in detail. Fig. 7 Belt drive roller with support surfaces and their position on a wide and the narrowest belt. Fig. 8 Belt drive of the first type for a banding machine in which the position of the first longitudinal side of the belt channel is the same for all belt widths. Fig. 9a, b, c Side components of a belt drive of the first type according to Figure 8 for a narrow belt Fig. 10 a,b,cSide components of a belt drive of the first type according to Figure 8 for a wide belt Fig. 11 a,bFloor component of a belt drive of the first type according to Figure 8 Fig. 12a,bCross-section through the belt channel of a belt drive of the first type according to Figure 8 for a narrow and a wide band Fig. 13 Belt drive of the first type Fig. 14a,b,cSide components of a belt drive of the first type according to Figure 13 for a narrow belt Fig. 15 a,b,cSide components of a belt drive of the first type according to Figure 13for a wide belt Fig. 16 a,bFloor component of a belt drive of the first type according to Figure 13 Fig. 17a,bCross-section through the belt channel of a belt drive of the first type according to Figure 13 for a narrow and a wide belt Fig.18Banderoling machine with a belt drive of the second type Fig.19aMounting of a belt drive of the second type Fig. 19bBelt channel of a belt drive of the second type Fig. 20a,bCross-section through belt channels of belt drives of the second type for a narrow and a wide belt.

[0129] In principle, identical parts in the figures are provided with identical reference symbols. Ways to implement the invention

[0130] Figure 1shows a sketch of a banding machine 1 with a guide arch 18, with the help of which a band 100 is wrapped around an object 105. The guide arch 18 is mounted on a housing 102. In the housing 102 there is a band drive 2 with the help of which the band 100 is fed into the guide arch 18. The band 100 is fed in so far that it ultimately overlaps with itself. The beginning of the band is held in this overlap area, which in the sketch is located below the object 105. The band drive 2 then runs backwards, pulling the band back and tightening it. The band leaves the guide arch 18 and wraps around the object 105. Once a desired length or a desired tension has been reached, the band 100 is joined to itself, for example by an ultrasonic welding process.The tape 100 is cut off, and the tape 100 located in the tape drive 2 is reinserted into the guide sheet 1004 for banding the next object. The tape 100 is removed from a supply roll 101 and guided through a tape insertion opening 103 to the tape drive 2 located inside the housing 102.

[0131] The belt drive 2 comprises, on the one hand, a belt channel 3 that guides the belt 100, and, on the other hand, a drive roller 4a that accelerates the belt 100. Typically, the insertion and retraction of the belt 100 are carried out using the same drive roller 4a. However, it is also possible to use two rollers, each of which can be driven in one direction and run freely in the opposite direction.

[0132] Figure 2shows the schematic structure of a belt drive 2. The belt channel 3 here consists of two parts: a front part 3b and a rear part 3a. The belt 100 runs in this belt channel 3. The drive roller 4a is arranged between the front part 3b and the rear part 3a of the belt channel 3. In the example shown, the drive roller 4a presses the belt against a counter-pressure roller 4b. The drive roller 4a and the counter-pressure roller 4b each run on an axle which each also carries a gear wheel 40a, 40b. The gear wheels 40a, 40b mesh with one another in operation. The drive roller 4a is driven by a motor (not shown). The counter-pressure roller 4b is coupled to the drive roller 4a by the gear wheels 40a, 40b and is thus also driven. The belt 100 is clamped between the two rollers and can thus be accelerated.It has proven advantageous to manufacture the drive roller 4a from aluminum and to coat the counterpressure roller 4b with rubber. This ensures good power transmission to the belt 100 and makes the machine easy to maintain.

[0133] To simplify threading the belt 100 at the start of operation and reduce the risk of a belt jam in the belt channel 3, the belt drive can have an input drive roller 5a. This can be driven by the same motor as the drive roller 4a. Here, too, the belt 100 is pressed down using a counterpressure roller 5b. The combination of a driven aluminum roller as the input drive roller 5a and a rubber counterpressure roller 5b has also proven successful here. <opplung von Gegendruckwalze 5b und Eingangsantriebswalze 5a ist zwar prinzipiell möglich, wurde hier aber nicht realisiert.

[0134] To determine the length of the inserted and retracted tape, an encoder wheel 6a is used in the example shown. For a reliable measurement, there should be as little slippage as possible between tape 100 and encoder wheel 6a. This is achieved by applying a counterpressure <rad 6b eingesetzt wird.

[0135] In the example of Figure 2 The belt channel 3 is interrupted in the area of ​​the drive roller 4a and only begins behind the input drive roller 5a. For the encoder wheel 6a and the counter pressure <rad 6b weist der Bandkanal 3 in dem Bodenbauteil und dem Decl<enbauteil eine Ausnehmung auf.

[0136] Figure 3shows a guide arch 18 with an inserted insert 20 in a front view. The insert 20 consists of four parts 202a, 202b, 202c, 202d. The guide arch 18 comprises a cover 182 and a band guide surface 181. The guide arch 18 is part of a banding machine, which also includes a table 104. The goods to be banded are placed on the table 104 during banding, and the band guide surface 181 guides the band around the goods. The surface of the table 104 is therefore just above the band guide surface 181 and limits the clear opening 180a of the guide arch 18. Otherwise, in the example shown, the cover 182 limits the clear opening 180a.

[0137] The insert 20 is arranged in such a way that it has a restriction <ungsfläche 201 für die Bandführungsfläche 181 darstellt. Die Beschränl<ungsfläche 201 ist auf den geraden Abschnitten über kurze Strecken unterbrochen, um das Einsetzen des Einsatzes zu erleichtern.

[0138] Each of the parts of the insert 202a, b, c, and d is provided with a gripping recess 203. These gripping recesses 203 are located outside the clear opening 180a of the guide arch but within the clear opening of the band guide surface. They can therefore be grasped by the user, but at the same time do not restrict the size of the goods to be banded.

[0139] Figure 4ashows a guide arch with second halves 302 of two locking systems 30 in a sectional view. The viewing direction is perpendicular to the belt guide surface 181. In this view, the belt guide surface 181 appears extended as an elongated rectangle. The belt guide surface 181 is restricted on the first side 1811, for example, by a protrusion. This restriction prevents the belt from slipping off the belt guide surface 181 beyond the first side 1811. On the second side 1812, the belt guide surface is unrestricted, allowing the belt to overhang there.

[0140] The tape guide surface 181 shown is a section of the Figure 3shown arc and continues at the top and bottom, protruding from the image plane. The tape guide surface 181 is surrounded by the cover 182. The cover 182 is open to the interior of the guide arc 18. Two second halves 302 of locking systems are mounted on the inner surface of the outer side of the cover 182.

[0141] The upper second half of a locking system 302 consists of two locking pins 3021 mounted parallel to each other on the inner surface of the outer side of the cover 182. The two locking pins 3021 protrude perpendicularly from this inner surface. In the view shown, they therefore appear as circles.

[0142] The lower second half of a locking system 302 consists of a locking pin 3021 mounted on a region 3023 on the guide arch that is not rotationally symmetrical in the strict sense. In this case, the region 3023 is shaped as a section of a square pyramid. The locking pin 3021 has a groove 3022. The locking pin 3021 extends parallel to the inner surface of the outer side of the cover 182.

[0143] Both of the second halves of the locking systems 302 shown here are examples of anti-twist fastening systems.

[0144] In the Figures 4b, c and d is illustrated how bands of different widths 19a, b and c are arranged in the guide arch according to Figure 4a be conducted.

[0145] Figure 4bshows the situation with the widest band 19c that can be processed by the banding machine shown. The band 19c is shown hatched but transparent: This band 19c is guided at its first edge by the restricted first side 1811 of the band guide surface and prevented from slipping at its second edge by the cover 182. The guide sheet 18 is similar to the one shown in Figure 4a shown.

[0146] Figure 4cshows the situation with a medium-width belt 19b. In order to guide this belt 19b safely, a multi-part insert 20 is used in the example shown: an upper part 202b uses the upper locking system 30. The lower part 202a uses the lower locking system 30. The parts 202a and 202b of the insert 20 have a step: one surface continues the belt guide surface 181, a surface perpendicular to it represents the restriction. <ungsfläche 201 dar. Der Abstand zwischen der Beschränkung an der ersten Seite 1811 der Bandführungsfläche und der Beschränl<ungsfläche 201 ist an die Breite des Bandes 19b angepasst. Das Band 19b kann so in keine Richtung abrutschen oder abknicken.

[0147] Figure 4dshows the situation with the narrowest band 19a that can be used in the guide arch shown. In order to guide this band 19b safely, a multi-part insert 20 is also used in the example shown: The upper part 202b uses the upper locking system 30. The lower part 202a uses the lower locking system 30. The parts 202a and 202b of the insert 20 are essentially plate-shaped and protrude so far towards the interior of the guide arch that they limit the band guide surface 181 on its second side 1812 and thus the limitation <ungsfläche 201 bilden. Der Abstand zwischen der Beschränkung an der ersten Seite 1811 der Bandführungsfläche und der Beschränl<ungsfläche 201 ist an die Breite des Bandes 19a angepasst und entspricht gerade der Breite der Bandführungsfläche 181. Das Band 19a kann so in keine Richtung abrutschen oder abknicken.

[0148] The Figures 5a and 5b illustrate how the insert 20 according to Figure 3is inserted into the guide arch 18. In Figure 5a The two lower parts 202a and 202d are inserted: These are inserted into the cover 182 from the inside and can then be pushed downwards along the inner surface of the outer side onto the second half 302 of the locking system 30 and thus secured in a rotationally fixed manner. For this purpose, the two lower parts 202a and 202d are equipped with a first half 301 of the locking system 30, which is not visible in this view. Figure 5a shows the situation before locking, so that the parts 202a and 202d are still above their operating position and therefore restrict the belt guide surface 181 only over short distances.

[0149] In Figure 5bThe insertion of the upper parts 202c and 202a is shown. Part 202c is shown twice in the figure: on the one hand, it is already in its operating position and fastened to the cover 182 of the belt guide by the upper locking system 30. On the other hand, it is shown inside the clear opening 180a of the guide arch 18. The external dimensions 2020b of part 202c of the insert 20 are smaller than the clear opening 180a of the guide arch 18, so that part 202c, like the other parts of the insert, can be easily brought from the inside to the inner surface of the outer side of the cover 182 and fastened there.The locking system 30 with which the upper parts 202b and 2020c are fastened is designed differently in this example than that of the lower parts 202a and 202d: It comprises two plug pins projecting perpendicularly from the inner surface of the outer side of the cover 182 onto which the upper parts 202b and 2020c, each having a first half of the locking system 301 consisting of two blind holes 3011, are pushed.

[0150] Figure 6 shows the locking connection 30 in detail, with which the lower parts 202a and 202d in the embodiment according to the Figures 3 and 5a,bbe attached to the cover 182. The attachment to the cover 182 of the belt guide 18 is cuboid-shaped and at the upper end merges into an area 3023 whose shape corresponds to a section of a square pyramid. A socket pin 3021 is attached to this area 3023. This socket pin 3021 is provided with a groove 3022. The area 3023, which is not rotationally symmetrical in the strict sense, and the socket pin 3021 with its groove 3022 represent the second half 302 of a locking system 30. This second half 302 of the locking system 30 is attached to the guide arch 18.

[0151] The corresponding first half 301 of the locking system 30 is formed in the fastening part 202a of the insert 20. It is a blind hole 3011 provided with a resilient pressure piece 3012. The blind hole 3011 is formed in a region 3013 of the part 202a of the insert 20, which is shaped complementarily to the region 3023 of the second half 302 of the locking system.

[0152] If the two halves of the locking system 30 are locked, the tip of the spring-loaded pressure piece 3012 lies in the groove 3022 and thus, together with the superimposed areas 3013 and 3023, prevents a relative movement in the direction of expansion of the blind hole 3011 and the socket pin 3012. The interaction of the blind hole 3011 and the socket pin 3012 prevents a relative translational movement perpendicular to the direction of expansion of the blind hole 3011 and the socket pin 3012. The shape of the complementary areas 3013 and 3023 also prevents a relative rotational movement about the direction of expansion of the blind hole 3011 and the socket pin 3012. The part 202a is thus securely and torsionally fixed by the locking connection without a tool being required to establish or release the connection.

[0153] In Figure 6 In addition, the area of ​​part 202a is marked by hatching, which is used as a restriction <ungsfläche 201 dienen kann. Figure 6 shows a plate-shaped part 202a of an insert 20, which does not continue the tape guide surface but only limits it. In an embodiment in which the part 202a continues the tape guide surface, the step is located within the hatched area, one side of which continues the tape guide surface while the other side limits the tape guide surface and thus the limitation. <ungsfläche 201 bildet.

[0154] Figure 7 shows a counterpressure roller 4b to a belt drive roller with support surfaces 41a and 41b. Also shown is the counterpressure <rad 6a zum Encoderrad. Figure 7 illustrates the design and arrangement using the example of the narrowest band 19a and a wider band 19b, which the banding machine can process. Figure 7The arrangement shown is preferably used in embodiments in which the position of the first edge of belts of all widths relative to the belt drive is the same. In this case, the belts run, unlike in the later Figures 13 to 17 , not centered in the belt drive, but along the first side of the belt drive.

[0155] The encoder wheel and the counterpressure <rad zum Encoderrad 6a werden bei dieser Ausführungsform derart in der Nähe des ersten Randes der Bänder oder der ersten Seite des Bandantriebs positioniert, dass sie auch beim schmalsten Band 19a noch vollständig aufliegen. Damit befinden sich das Encoderrad und das Gegendrucl<rad zum Encoderrad 6a in einem Bereich in dem sie bei der Breite jedes der möglichen Bänder vollständig aufliegen und somit zuverlässige Messwerte liefern können.

[0156] The belt drive roller should be able to act as symmetrically as possible on each of the possible belts in order to ensure uniform and symmetrical insertion. This requirement can be met by a belt drive roller and / or a counter-pressure roller 4b to the belt drive roller with support surfaces 41a, 41b. It has been found that interruptions in contact with the belt drive roller 4a in the middle of the belt have hardly any influence on the uniform insertion if only the edges of the belt are accelerated equally. The support surfaces 41a are therefore dimensioned such that the distance 42a between the first edge of the belt and the first side of the first support surface 41a, i.e. the width of the free surface on the first side, is equal to the distance 42b between the second edge of the belt and the second side of the support surface closest to the second edge of the belt and running on the belt, i.e. the width of the free surface on the second side.The support surface closest to the second edge of the belt and running on the belt is the support surface 41a for the narrowest belt 19a and the support surface 41b for the wider belt 19b.

[0157] Figure 8shows the belt channel 3 of a belt drive of the first type, in which the belts of different widths are guided in such a way that the first edge of belts of all widths lies at the same position in the belt drive. A front and a rear side component, 8a and 8b, form the I <analdecl<e und die I<analseitenwände. Der I<analboden wird durch ein Bodenbauteil 7 gebildet. Der Bandkanal 3 weist im Bereich der Antriebswalze und ihrer Gegendruckwalze, die beide nicht eingezeichnet sind, eine Ausnehmung auf und zwar sowohl im I<analboden als auch in der I<analdecl<e. An dieser Stelle stossen das vordere und da hintere Seitenbauteil 8a und 8b aneinander. Beide Seitenbauteile 8a, 8b in der Nähe der Antriebswalze sind abgeflacht, um das Band möglichst weit in den Zwischenraum der beiden Walzen zu leiten.

[0158] On the front side component 8a, the counter pressure <rad 6b zum Encoderrad in einer Ausnehmung in der I<analdecl<e montiert. Das Gegendrucl<rad 6b ist leicht zur ersten Seite hin versetzt, um auch auf dem schmalsten Band vollständig aufzuliegen. Am vorderen Ende des vorderen Seitenbauteils 8a ist auch die Gegendruckwalze 5b zur Eingangsantriebswalze 5a montiert. Die Gegendruckwalze 5b ist eine Gummiwalze, die derart strukturiert ist, dass sie so viele parallele Auflageflächen hat, wie es unterschiedliche Breiten der Bänder für die Banderoliermaschine gibt. Hier sind zwei Auflageflächen gezeigt, die durch eine Rille getrennt sind.

[0159] On the rear side component 8b there is a laterally protruding handle 80.

[0160] The side components 8a and 8b are held to the base component 7 with three clamps 11a, 11b, and 11c. The clamps 11a, 11b, and 11c are U-shaped and are pushed laterally into grooves on the top side of the side components 8a and 8b as well as into a guide of the base component 7 and secured with hand-tightenable screws.

[0161] To adjust the first-type belt drive to the width and thickness of a belt, first loosen the locking screws of the clamps 11a, 11b, and 11c and remove the clamps. Then, the front side component 8a can be pulled forward through the belt insertion opening. The rear side component 8b can then be slightly lifted using the handle 80 and then pulled out sideways. The side components 8a and 8b, which are adapted to the belt, are then inserted in reverse order and secured using the clamps 11a, 11b, and 11c.

[0162] The Figures 9a, b and cshow the side components of the belt drive according to Figure 8 for a narrow band. Figure 9a shows the front side component 8a from below. The counter-pressure roller 5b is mounted at the front end. The essentially flat underside of the side component 8a extends adjacent to this. The underside has the shape of a rectangle with a width corresponding to the width of the base component 7 and a length corresponding to the distance between the input drive roller 5a and the drive roller. To the right and left of the location where the counter-pressure roller of the drive roller is to engage, the underside continues slightly. The front side component 8a is provided with a recess in one place in which the counter-pressure <rad 6b montiert ist.

[0163] The flat surface of the underside is structured as follows: A first projection with a first height runs along the outer, long edges. The first height corresponds to the height of the desired internal cross-section of the belt channel. Adjacent to this first projection and also extending over the entire length are second projections with a second height. This combination of the first and second projections interacts with the corresponding edge step (10c1, 10c2).

[0164] Parallel to these second projections and also along the entire length runs a third projection, which forms the second I <analseitenwand bildenden Abschnitt 9 darstellt. Er hat ebenfalls die zweite Höhe. Der dritte Vorsprung und der zweite Vorsprung auf der ersten Seite des Seitenbauteils stellen die I<analseitenwände bildende Abschnitte 9 dar. Sie sind in einem Abstand zueinander angeordnet, der der Breite des gewünschten Innenquerschnitts des Bandkanals entspricht. Der Abschnitt der ebenen Fläche der Unterseite zwischen den beiden die I<analseitenwände bildenden Abschnitten 9 bildet im montierten Zustand die I<analdecl<e.

[0165] The second height and the width of the projections are selected such that they can engage in the corresponding notch 10d and the edge steps 10c1, 10c2 of the base component 7 and in particular such that the first projection can rest on the base component 7.

[0166] Figure 9bshows the rear side component 8b, which is connected to the front side component 8a of the Figure 9aThe underside is also shown. This underside is also a substantially flat surface with first, second, and third projections, which correspond in arrangement, height, and width to those of the front side component 8a. The underside of the rear side component 8b is also substantially rectangular, with a width corresponding to the width of the base component 7 and a length corresponding to the distance between the drive roller and the rear end of the base component 7.On the side facing the drive roller, the rear side component 8b extends a little further in a central region, so that when the rear side component 8b and the front side component 8a are arranged in their operating position on the base component 7, a piece of the rear side component 8b is surrounded on the right and left by sections of the front side component 8a and a recess remains between the two side components 8a and 8b, in which recess the counter-pressure roller can engage with the drive roller.

[0167] Figure 9c shows a cross section through a side component 8 according to one of the Figures 9a or 9b: On a rectangular base shape, downward-pointing first, second, and third projections are attached. The first projections are on the right and left outside and have a first height that is smaller than the second height of the second and third projections. The second projections are arranged directly adjacent to the first projections. The third projection and the second projection on the first side represent the I <analseitenwände bildenden Abschnitte 9 des Seitenbauteils 8 dar.

[0168] The Figures 10a to c show the side components 8 of the belt drive according to Figure 8 for a wide range. They are similar to the Figures 9a to cwith the exception that there are no third projections, but the second projections are the I <analseitenwände bildenden Abschnitte 9 des Seitenbauteils 8 darstellen. Die einander zugewandten Seiten der die I<analseitenwände bildenden Abschnitte 9 sind in einem Abstand zueinander angeordnet, der der Breite des gewünschten Innenquerschnitts des Bandkanals entspricht. Die Breite ist offensichtlich grösser als bei den Seitenbauteilen gemäss den Figures 9a to c.

[0169] To adjust the height of the inner cross-section of the belt channel, the height of the projections is adjusted accordingly. To avoid having to replace clamps and other fastening elements when adjusting to the thickness of a belt, the rectangular basic shape, which is used in the Figures 9c and 10c shown, be adjusted so that the sum of the height of the first projections and the height of the basic shape is the same for all side components.

[0170] Figure 11a and bshow the base component 7 of the belt drive according to Figure 8 . In Figure 11a A plan view of the base component 7 is shown. The base component 7 also has a substantially flat, rectangular shape. In this embodiment, the input drive roller 5a is mounted at the front end. There are also recesses for the encoder wheel and the drive roller. The plane of the base component 7 is provided with two edge steps 10c1 and 10c2 and a notch 10d, which extend over the entire length. The edge step 10c1 runs along the first side of the base component 7. The edge step 10c1 runs along the second side of the base component 7. The distance between the inner sides of the edge step 10c1 on the first side of the base component 7 and the side of the notch 10d facing it corresponds to the width of the desired strip width for a specific strip width.

[0171] The notch 10d can form the third projection of the side member according to the Figures 9a-c and the edge steps 10c 1, 10c2 can accommodate the first and second projections of the side component according to the Figures 9a-c and 10a-c to record.

[0172] Figure 11b shows a cross section through the floor component 7 according to Figure 11a with the notch 10d and the two edge steps 10c1 and 10c2.

[0173] In the Figures 12a and 12b The cross sections through the belt channel are shown once the side components 8 for narrow belts according to Figures 9a-c and the side components 8 for wide bands according to Figures 10a-cbe used: Thanks to the notch 10d and the edge steps 10c1, 10c2 and projections 9, the transition between the floor component and the side components is always below the I <analbodens. So läuft das geführte Band nicht an einem Spalt zwischen beiden Bauteilen entlang und kann kaum verklemmen. Die Randstufen 10c1, 10c2 und Vorsprünge 9 richten den Bandkanal zudem korrekt aus, so dass die nötige Präzision in der Grössenordnung von 0.1 mm ohne Messen und Justieren beim Tausch der Seitenbauteile 8 erreicht wird. Weitere Kerben und entsprechende Seitenbauteile können bei Bedarf analog zu den gezeigten Beispielen gestaltet werden. Eine Anpassung an unterschiedliche Banddicken entsteht durch eine entsprechende Wahl der Höhe der Vorstände.

[0174] Figure 13shows the belt channel 3 of a belt drive of the first type, in which the belts of different widths are guided centrally. A front and a rear side component, 8a and 8b, form the I <analdecl<e und die I<analseitenwände. Der I<analboden wird durch ein Bodenbauteil 7 gebildet. Der Bandkanal 3 weist im Bereich der Antriebswalze und ihrer Gegendruckwalze, die beide nicht eingezeichnet sind, eine Ausnehmung auf und zwar sowohl im I<analboden als auch in der I<analdecl<e. An dieser Stelle stossen das vordere und da hintere Seitenbauteil 8a und 8b aneinander. Beide Seitenbauteile 8a, 8b in der Nähe der Antriebswalze sind abgeflacht, um das Band möglichst weit in den Zwischenraum der beiden Walzen zu leiten.

[0175] On the front side component 8a, the counter pressure <rad 6b zum Encoderrad in einer Ausnehmung in der I<analdecl<e montiert. Am vorderen Ende des vorderen Seitenbauteils 8a ist auch die Gegendruckwalze 5b zur Eingangsantriebswalze 5a montiert. Die Gegendruckwalze 5b ist eine Gummiwalze, die derart strukturiert ist, dass sie zwei parallele Laufflächen hat, die durch eine mittig verlaufende Rille getrennt sind.

[0176] On the rear side component 8b there is a laterally protruding handle 80.

[0177] The side components 8a and 8b are held to the base component 7 with three clamps 11a, 11b, and 11c. The clamps 11a, 11b, and 11c are U-shaped and are pushed laterally into grooves on the top side of the side components 8a and 8b as well as into a guide of the base component 7 and secured with hand-tightenable screws.

[0178] To adjust the first-type belt drive to the width and thickness of a belt, first loosen the locking screws of the clamps 11a, 11b, and 11c and remove the clamps. Then, the front side component 8a can be pulled forward through the belt insertion opening. The rear side component 8b can then be slightly lifted using the handle 80 and then pulled out sideways. The side components 8a and 8b, which are adapted to the belt, are then inserted in reverse order and secured using the clamps 11a, 11b, and 11c.

[0179] The Figures 14a, b and c show the side components of the belt drive according to Figure 13 for a narrow band. Figure 14ashows the front side component 8a from below. The counter-pressure roller 5b is mounted at the front end. The essentially flat underside of the side component 8a extends adjacent to this. The underside has the shape of a rectangle with a width corresponding to the width of the base component 7 and a length corresponding to the distance between the input drive roller 5a and the drive roller. To the right and left of the location where the counter-pressure roller of the drive roller is to engage, the underside continues slightly. The front side component 8a is provided with a recess in one place in which the counter-pressure <rad 6b montiert ist.

[0180] The flat surface of the underside is structured as follows: A first projection with a first height runs along the outer, long edges. The first height corresponds to the height of the desired internal cross-section of the belt channel. Adjoining this first projection and also extending over the entire length are second projections with a second height. Parallel to these second projections and also along the entire length are third projections, which represent the I <analseitenwände bildende Abschnitte 9 bilden. Sie haben eine dritte Höhe. Die einander zugewandten Seiten der die I<analseitenwände bildenden Abschnitte 9 sind in einem Abstand zueinander angeordnet, der der Breite des gewünschten Innenquerschnitts des Bandkanals entspricht. Der Abschnitt der ebenen Fläche der Unterseite zwischen den beiden die I<analseitenwände bildenden Abschnitten 9 bildet im montierten Zustand die I<analdecl<e.

[0181] The second and third heights as well as the width of the projections are selected such that they can engage in corresponding notches of the base component 7 and in particular such that the first projection can rest on the base component 7.

[0182] Figure 14b shows the rear side component 8b, which is connected to the front side component 8a of the Figure 14aThe underside is also shown. This underside is also a substantially flat surface with first, second, and third projections, which correspond in arrangement, height, and width to those of the front side component 8a. The underside of the rear side component 8b is also substantially rectangular, with a width corresponding to the width of the base component 7 and a length corresponding to the distance between the drive roller and the rear end of the base component 7.On the side facing the drive roller, the rear side component 8b extends a little further in a central region, so that when the rear side component 8b and the front side component 8a are arranged in their operating position on the base component 7, a piece of the rear side component 8b is surrounded on the right and left by sections of the front side component 8a and a recess remains between the two side components 8a and 8b, in which recess the counter-pressure roller can engage with the drive roller.

[0183] Figure 14c shows a cross section through a side component 8 according to one of the Figures 14a or 14b: On a rectangular base shape, downward-pointing first, second, and third projections are attached. The first projections are on the right and left outside and have a first height that is smaller than the second and third heights of the second and third projections. The second projections are arranged directly adjacent to the first projections. The third projections represent the I <analseitenwände bildende Abschnitte 9 des Seitenbauteils 8 dar.

[0184] The Figures 15a to c show the side components 8 of the belt drive according to Figure 13 for a wide range. They are similar to the Figures 4a to cwith the exception that there are no third projections, but the second projections are the I <analseitenwände bildenden Abschnitte 9 des Seitenbauteils 8 darstellen. Die einander zugewandten Seiten der die I<analseitenwände bildende Abschnitte 9 sind in einem Abstand zueinander angeordnet, der der Breite des gewünschten Innenquerschnitts des Bandkanals entspricht. Die Breite ist offensichtlich grösser als bei den Seitenbauteilen gemäss den Figures 14a to c.

[0185] To adjust the height of the inner cross-section of the belt channel, the height of the projections is adjusted accordingly. To avoid having to replace clamps and other fastening elements when adjusting to the thickness of a belt, the rectangular basic shape, which is used in the Figures 14c and 15c shown, be adjusted so that the sum of the height of the first projections and the height of the basic shape is the same for all side components.

[0186] Figure 16a and bshow the base component 7 of the belt drive according to Figure 13 . In Figure 16a A plan view of the base component 7 is shown. The base component 7 also has a substantially flat, rectangular shape. In this embodiment, the input drive roller 5b is mounted at the front end. There are also recesses for the encoder wheel and the drive roller. The plane of the base component 7 is provided with two pairs of notches 10a and 10b, which are arranged symmetrically to the longitudinal axis of the base component 7 and extend over the entire length. The distance between the inner sides, which each lead to an I <erbenpaar 10a oder 10b gehören, entspricht jeweils der für eine bestimmte Bandbreite gewünschte Breite des Innenquerschnitts des Bandkanals. Das Kerbenpaar 10b kann die die I<analseitenwände bildenden Abschnitte 9 des Seitenbauteils gemäss den Figures 14a-c record and the I <erbenpaar 10a kann die die I<analseitenwände bildenden Abschnitte 9 des Seitenbauteils gemäss den Figures 15a-cto record.

[0187] Figure 16b shows a cross section through the floor component 7 according to Figure 16a with the two I <erbenpaaren 10a und 10b.

[0188] In the Figures 17a and 17b The cross sections through the belt channel are shown once the side components 8 for narrow belts according to Figures 14a-c and the side components 8 for wide bands according to Figures 15a-cbe used: Thanks to the notches and projections, the transition between the floor component and the side components is always below the I <analbodens. So läuft das geführte Band nicht an einem Spalt zwischen bei Bauteilen entlang und kann kaum verklemmen. Die Kerben und Vorsprünge richten den Bandkanals zudem korrekt aus, so dass die nötige Präzision in der Grössenordnung von 0.1 mm ohne Messen und Justieren beim Tausch der Seitenbauteile 8 erreicht wird. Weitere I<erbenpaare und entsprechende Seitenbauteile können bei Bedarf analog zu den gezeigten Beispielen gestaltet werden. Eine Anpassung an unterschiedliche Banddicken entsteht durch eine entsprechende Wahl der Höhe der Vorstände.

[0189] Figure 18 shows a banding machine with a second type of belt drive. As already mentioned in Figure 1 As described, this banding machine also has a guide arch 18 in which a band 100 can be guided around an object not shown. Figure 18now also shows the locking unit 106 in which the beginning of the tape is held after the shooting has been completed and is welded after the tape 100 has been retracted.

[0190] With a second type of belt drive, the entire belt channel is replaced in order to adapt the banding machine to the desired belt thickness and / or width. To make this possible, the banding machine shown has a holder 12, which can hold the belt channel and, on the other hand, holds the drive roller 4a, the counter-pressure roller 4b of the drive roller 4a and the input drive roller 5a and its counter-pressure roller 5b. The drive roller 4a and the input drive roller 5a are coupled via belts to a motor that drives them. The drive roller 4a and its counter-pressure roller 4b are coupled by gears. The gear 40b of the counter-pressure roller 4b is in Figure 18 visible.

[0191] The two counter-pressure rollers 4b and 5b are movably mounted relative to the drive rollers 4a and 5a via a lever mechanism and can thus be raised.

[0192] The band channel is in Figure 18 barely visible, as it is largely concealed by the holder 12. However, a clamp 11 is visible, which is attached to the strap channel above the holder 12 and prevents the strap channel from slipping downwards through the strap insertion opening 103.

[0193] Figure 19ashows the holder 12 removed and in a view obliquely from above. In this view, the textured drive roller 4a and the counterpressure roller 4b are visible at the rear end of the holder, as well as the textured input drive roller 5a and its counterpressure roller 5b at the front end. A lever is mounted on an axle between the two counterpressure rollers. The holder for the counterpressure roller 4b of the drive roller is also mounted on the same axle, so that it lifts up when the lever is pressed down from its rest position. When the lever is pressed, the lever itself presses on a shoulder that belongs to a rocker, the other end of which carries the counterpressure roller 5b of the input drive roller 5a. Pressing the lever pushes the shoulder downwards and thus the counterpressure roller 5b of the input drive roller 5a upwards. Thus, with the pressure of the lever, both counterpressure rollers 4b and 5b are raised and space is created for inserting or removing the belt channel.

[0194] The bracket can also accommodate an encoder wheel and a counter pressure <rad zum Encoderrad tragen. Das Gegendrucl<rad ist dabei bevorzugt ebenfalls am Hebelmechanismus derart befestigt, dass es durch den Druck des Hebels angehoben wird, um das Einschieben oder Herausziehen des Bandkanals zu erlauben.

[0195] The two drive rollers 4a and 5a are each structured by three parallel grooves, forming four roller-shaped sections on the running surface of the drive rollers 4a, 5a. The drive rollers 4a, 5a are preferably made of aluminum. The counterpressure rollers 4b, 5b are preferably rubber rollers and are unstructured. Their running surface is smooth.

[0196] Figure 19bshows a band channel 13 for a narrow band. The I <analboden des Bandkanals ist weitgehend durchgängig, die I<analseitenwände sind über die gesamte Länge im Wesentlichen gleich ausgebildet und die I<analdecl<e ist in einem hinteren Abschnitt geschlossen, während sie im vorderen Abschnitt eine breite Ausnehmung aufweist, die sich über die gesamte Länge des vorderen Abschnitts zieht. Im Bereich der Gegendruckwalzen, die den vorderen Abschnitt begrenzen, ist die Ausnehmung der Kanaldecke so breit wie die Lauffläche der Gegendruckwalzen 4b, 5b. Der I<analboden weist eine Vielzahl von

[0197] Recesses. There are four recesses 14 in the drive roller area and four recesses 15 in the input drive roller area. The recesses 14 in the drive roller area are parallel to each other and separated only by narrow webs. The arrangement and width of the webs correspond to the grooves in the drive roller. The same applies to the recesses 15 in the input drive roller area. A single recess between the drive roller area and the input drive roller area serves for the contact of the tape with the encoder wheel.

[0198] The Figures 20a and 20b each show a cross section through the front and rear section of a band channel 13. The band channel 13 of the Figure 20a is suitable for a narrower band than the band channel 13 of the Figure 20b . The thickness of the bands for the two shown I <anäle angepasst sind, ist gleich.

[0199] Common to the front and rear sections in both figures is the base component 7: This is formed by a plate with a recess along each of its outer edges. The width of these recesses is determined by the width of the belt for which the respective belt channel is designed: the distance between the inner edges of the recess corresponds to the desired width. The side components 8 are inserted into this recess, their bases having a width corresponding to that of the recess in the base component 7.

[0200] In the rear section, the side components 8 are strips with a rectangular cross-section whose height corresponds to the sum of the desired height of the inner cross-section of the belt channel and the depths of the recesses in the base component 7 and the Decl <enbauteil 17 entspricht. Das Decl<enbauteil 17 wird ebenfalls durch eine Platte realisiert, welche entlang ihren Aussenkanten Vertiefungen aufweist, analog zum Bodenbauteil 7.

[0201] In the front section, the side components 8 are shaped slightly differently: Their cross-section has the shape of a 90° angle, the first leg of which is as wide as the recess in the base component 7. These first legs are inserted into the recesses of the base component 7. The facing, free sides of the first legs form the I <analseitenwände. Die zweiten Schenkel liegen in einer Ebene. Ihre dem I<analboden zugewandten Seiten bilden die Kanaldecke im vorderen Abschnitt.

[0202] In the example shown, the belt channels are manufactured from several parts, but are then assembled by the manufacturer, and the user is not intended to disassemble the belt channels. These are therefore one-piece belt channels.

[0203] To adapt a banding machine with a second-type band drive to a band, first loosen and remove clamp 11. Then, the lever is pressed, and the band channel 3 is pulled out through the band insertion opening. The adapted band channel 3 is then pushed through the band insertion opening into the holder while holding the lever down. Once the new band channel 3 is in the operating position, it is secured with clamp 11.

[0204] Banding tapes typically have a width between 25 and 100 mm and a thickness of 50-250 µm. The desired interior width, i.e. the width of the I <anals, ist für ein 25 mm Band, 26 mm und für ein 100mm beispielweise 101mm. Die Innenraumhöhe, also die Höhe des I<anals, für ein 50 µm dickes Band kann beispielsweis 0.3 mm betragen und die Innraumhöhe, also die Höhe des I<anals, für ein 210 µm dickes Bandes 0.5 mm.

[0205] In summary, it can be stated that the encoder wheel and the input drive roller can be omitted. In addition, the belt channel can be Figure 9 can also be designed in several parts. For example, different side components could be mounted on the same floor component, so that the height of the inner cross-section of the belt channel can be varied. Likewise, a belt channel can be designed according to Figure 13 into a holder similar to that of Figure 19 The lever system, which is Figure 19 shown could then be simplified since the input drive roller counterpressure roller is carried by the belt channel and not by the bracket.

[0206] Instead of a multi-part insert, the insert 20 can also consist of a single part. A cover can also be omitted if the belt guide surface is self-supporting. The belt can be held to the belt guide surface in various ways: For example, the belt guide surface can create a vacuum and gently suck the belt in, or the belt guide surface can be the base of an I

Claims

1. Insert (20) for a curved guide (18) of a band-width-adjustable banderoling machine, which allows an adjustment of the curved guide (18) to bands of different, desired widths (19a,b,c), the curved guide (18) mounted on the banderoling machine having a clear opening (180a) and outer dimensions (180b) and comprising a band guiding surface (181) restricted on a first side (1811) and unrestricted on a second side (1812), wherein a) the insert (20) has a clear opening (200a) which is larger than or equal to the clear opening (180a) of the curved guide (18) and, in the assembled state, is arranged in alignment with the clear opening (180a) of the curved guide (18), and b) wherein the insert (20) has a restriction surface (201) which, in the assembled state, is intersected by the continuation of the band guiding surface (181) c) and wherein the restriction surface (201) is selected such that, in the assembled state, the distance between the first side (1811) of the band guiding surface (181) and the restriction surface (201) is adapted to the desired width.

2. Insert (20) according to claim 1, wherein a) the insert (20) consists of a set of at least two parts (202a,b,c,d), and b) the insert (20) has the shape of an arch, preferably open on at least one straight section, i) whose outer dimension (200b) is smaller than or equal to the outer dimension (180b) of the curved guide (18), and c) wherein the outer dimension (2020b) of each individual part (202a,b,c,d) is smaller than the clear opening (180a) of the curved guide (18).

3. Insert (20) according to claim 2, wherein the insert (20) consists of exactly four parts (202a,b,c,d), each forming a corner of a substantially rectangular arc.

4. Insert (20) according to any one of claims 1 to 3, wherein a) each of the parts (202a,b,c,d) of the insert (20) is equipped with a first half of a fastening system, b) wherein the fastening system in particular permits fastening and loosening without tools.

5. Insert (20) according to claim 4, wherein c) d the fastening system is a latching system (30), and d) wherein the first half (301) of the latching system (30) comprises in particular a blind hole (3011) equipped with a resilient thrust piece (3012), which can cooperate with a socket pin (3021) with corresponding groove (3022) belonging to the second half (302) of the latching system (30) and mounted on the curved guide (18), and e) wherein the latching system (30) enables in particular a twist-proof fastening by the latching system (30) i) either two or more blind holes (3011a,b,) equipped with resilient thrust pieces, which are linearly independent of one another in their direction of expansion ii) and / or in that the blind hole (3011) equipped with the resilient thrust piece is formed in a region (3013) of the insert (20) which is not rotationally symmetrical in the narrower sense about the direction of expansion of the blind hole and which can cooperate with a complementarily formed region (3023) on the curved guide (18).

6. Insert (20) according to any one of claims 1 to 5, wherein each of the parts of the insert (202a,b,c,d) is provided with a handle recess (203).

7. A curved guide (18) of a band-width-adjustable banderoling machine which allows the curved guide (18) to be adapted to bands of different widths (19a,b,c), wherein the curved guide (18) mounted on the banderoling machine has a band-width-adjustable band guiding surface (181) which is restricted on a first side (1811) and unrestricted on a second side (1812), so that the curved guide (18) can be adapted to bands of different widths (19a,b,c) by inserting an insert (20) according to one of the previous claims.

8. Curved guide (18) according to claim 7 comprising a cover (182) surrounding the band guiding surface (181) and a volume for receiving the insert (20).

9. Curved guide (18) according to any one of claims 7 to 8, wherein a) the distance between the first and the second side of the band guiding surface (1811, 1812) is adapted to the width of the narrowest band (19a), and b) wherein an insert (20) according to one of claims 1 to 6 can be mounted relative to the band guiding surface (181) in such a way that the distance between the restriction surface (201) and the first side (1811) of the band guiding surface is adapted to the width of a respective desired band (19a,b), and c) wherein preferably the distance between the inner wall of the cover (182) and the first side (1811) of the band guiding surface is adapted to the width of the widest band (19c).

10. Curved guide according to any of claims 7 to 9, a) which for each of the parts (202a,b,c,d) of the insert (20) is equipped with a second half of the fastening system, b) wherein the fastening system allows in particular a tool-free fastening and loosening.

11. Curved guide according to claim 10, wherein c) the fastening system is a latching system (30), and d) wherein the second half of the latching system (302) comprises in particular a socket pin (3021) with a groove (3022) mounted on the curved guide (18), which socket pin (3021) can cooperate with the first half of the latching system (301) located on the parts of the insert (202 a,b,c,d), which socket pin (3021) comprises a blind hole (3011) provided with a resilient thrust piece (3012) e) wherein the latching system (30) allows in particular a twist-proof fastening by the latching system (30) comprising i) either two or more socket pins (3021), each provided with a groove (3022), which are linearly independent of each other in their direction of extension ii) and / or in that a socket pin (3021) provided with a groove (3022) is attached to the curved guide (18) in a region (3023) which is not rotationally symmetrical in the strict sense about the direction of expansion of the socket pin (3021) and which can cooperate with a complementarily formed region (3013) on the insert (20).

12. Banderoling machine with adaptable band drive (100), which is suitable for banderoling an object (105) with different bands (19a,b,c), wherein the band drive (100) comprises a band channel (3) and at least one drive roller (4a), and wherein the drive roller (4a) is adapted to drive the different bands (19a,b,c) in the area of the band channel (3), wherein the band channel (3) is at least partially interchangeable and can be selected to be adapted to the width and preferably the band thickness of one of the different bands (19a,b,c), whereby the band drive (100) is designed to be adaptable to the different bands (19a,b,c) wherein the banderoling machine (1) further comprises a curved guide (18) according to any one of claims 7-11, and being particularly suitable for using bands that differ in width and band thickness (19a,b,c) and can preferably be thinner than 300 µm as banderoling material.

13. Banderoling machines according to claim 12, wherein f) the outer dimensions of the band drive (100) are not changed by the adaptation to bands of different widths (19a,b,c), g) the position of a first longitudinal side of the band channel (3) relative to the band drive (100) is not changed by the adaptation to bands of different widths (19a,b,c), h) and the adaptation of the band drive (100) to bands (19a,b,c) of different widths is achieved by adapting the position of a second longitudinal side of the band channel (3) relative to the band drive (100), and i) preferably, adaptation of the band drive (100) to different band thicknesses is achieved by adjusting the height of the channel cover relative to the band drive (100).

14. Banderoling machine according to one of claims 12 - 13, wherein the channel sides and the channel cover are realized by side components (8,8a,8b) and a) all side components (8,8a,8b) are exchangeable, while a bottom component (7) remains installed in the banderoling machine (1).

15. Banderoling machines according to claim 14, wherein the bottom component (7) is provided with at least one notch (10d) and two edge steps (1 0c1, 10c2) which extend parallel to the longitudinal axis over the entire channel length, wherein the distance of the facing edges of the at least one notch (10d) and one of the edge steps (10c1), is adapted to the width of a narrower band (19a) and the distance of the facing edges of the two edge steps (10c1, 10c2) from each other is adapted to the width of the widest band (19c), and wherein for each of the bands there are a front and a rear side member (8a, 8b), the portions (9) of which forming the channel side walls can engage in the corresponding notch (10d) and the associated edge step (10c1) of the bottom member (7), so that the bottom component, front side component and rear side component complement each other to form a band channel with an internal cross-section having a width and a height adapted to the width and band thickness of one of the different bands.

16. Banderoling machine according to one of claims 12 - 15, wherein b) the drive roller (4a) and / or its counter pressure roller (4b) has a plurality of support areas (41a,b) arranged in such a way that i) for each of the intended widths of the bands in operation with the band inserted ii) the distance (42a) between a first edge of the band and the first outer edge of one of the support areas (41a,b) which is closest to this first edge and rests on the band is equal to iii) the distance (42b) between a second edge of the band and the second outer edge of one of the support areas (41a,b), which is nearest to this second edge and rests on the band iv) and preferably these distances(42a,42b) are the same for all intended widths of bands. c) and particularly preferably an encoder wheel (6a) is arranged offset towards a channel side in such a way that in operation with the narrowest intended band it rests over its entire width on this band.

17. Adapting a banderoling machine according to one of claims 12 - 16 to a band having a desired width, comprising the following steps: a) Adapting the band drive to the width of the desired band, in particular by at least partially replacing the band channel, and b) adapting the curved guide to the width of the desired band by inserting an insert (20) according to any of claims 1 to 6.

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