WO2016041833A1

WO2016041833A1 - Method and device for producing packs

Info

Publication number: WO2016041833A1
Application number: PCT/EP2015/070686
Authority: WO
Inventors: Wilfried Ehmer; Thomas Stienen
Original assignee: Khs Gmbh
Priority date: 2014-09-17
Filing date: 2015-09-10
Publication date: 2016-03-24
Also published as: DE102014113393A1

Abstract

The invention relates to a method and a device for producing packs by at least single-ply, preferably multi-ply wrapping of an individual packaging group composed of at least two packages, on a processing section, using at least one film, the individual packaging groups being moved in a direction of transport through said processing section in order to be wrapped with the film.

Description

Method and device for producing packaging containers

The invention relates to a method according to the preamble of claim 1 and to a device according to the preamble of claim 15.

Basically, the production of packaging containers takes place in such a way that in each case a plurality of packages are assembled into a packaging group, in which the packages close together, and that the respective packaging group is then wrapped or enclosed with a film. Known methods generally use shrink films which reduce their dimensions by applying heat in a shrink tunnel in such a way that the film applies stress to the packaging of the respective packaging group and thus fixes it. The disadvantage here is, inter alia, that such shrink films are relatively thick and expensive, and that by the respective shrink tunnel high investment costs and by the shrinking

necessary heat input very high operating or energy costs arise.

To avoid these disadvantages, it is also known to use in the production of containers as a film, a stretch film (WO 201 1/024050), the under

Preload (film tension) at least one layer, but preferably several layers is wrapped around the respective container group, so that despite the use of a very thin and therefore inexpensive film packaging containers are obtained with sufficient stability. By using the stretch film can access a shrink tunnel and the associated with this high investment and

Operating costs are waived.

However, a disadvantage is in principle that with the known methods or with the known devices only an insufficient performance (number of packaging containers produced per unit time) can be achieved, namely

especially because of the lack of continuous movement of the

Packing groups through the treatment line even while Umwickeins the packaging groups with the film. The object of the invention is to provide a method by which the production of packaging containers with increased performance (number of produced

Packing container per unit time) is possible. To solve this problem, a method according to claim 1 is formed. An apparatus for carrying out the method is the subject of patent claim 15.

A special feature of the invention is that the packaging groups are moved continuously during wrapping with the at least one film and without stopping in a transport direction. This is gentler

Treatment of at least one film and high reliability high performance achievable. The packaging groups are preferred

Packing grippers held, but otherwise ground-free, i. without getting up on other machine elements, e.g. moved on transport elements, guides during wrapping with the at least one film in the transport direction, for example between a receiving position for receiving the

Packing groups and a dispensing position for dispensing the wrapped packaging groups, which usually when using a stretch film already form the packaging container or fed to a shrink tunnel when using a shrink film.

The film used in the method according to the invention is, for example, a shrink film or a stretch film, preferably a thin-walled stretch or shrink film, wherein at least the stretch film is preferably applied to several layers when wrapping the respective packaging group.

Before wrapping the respective packaging group with the at least one film, first of all, this packaging group is brought together with the film and a film end is applied, preferably one of a stationary one

Foil feeding or a film stock there withdrawn film to the respective packaging group.

In a general embodiment of the invention, this merging and application takes place in that one end of the film, preferably the end of the film advancing from the film feed during removal of the film, adjoins the respective film end Packaging group is fixed, for example by gluing using an adhesive application, such as a self-adhesive application or a double-sided adhesive tape. In a further general embodiment of the invention is for the

Merging the film with a packaging group, the film of the preferably fixed sheet feeder deducted such that they

Transport path or path of travel on which the packaging groups are moved to produce the packaging containers in the transport direction. For this purpose, the film is moved with a film end, preferably with a leading end of the film, to a provision position which adjoins the film

Film feed is located opposite side of the path of movement. In the thus positioned film, the packaging group to be wrapped is moved in, so that the film finally reaches the packaging group on at least three sides, i. encloses at the relative to the transport direction leading side and also more or less at two parallel to the transport direction oriented side.

Subsequently, a film end is applied to the packaging group and this is then set for wrapping in rotation. The required when wrapping the respective packaging group

Film tension is in principle produced either by the force or tension necessary for the removal of the film from the film supply, or at increased performance (number of packaging packages produced per unit time), at which a film length required for wrapping already before complete wrapping of the film supply or the film stock there is separated, by Folienrückhalte- or holding means which act on the not yet wrapped on wrapping the respective packing group Folienteillänge and / or hold them at one end of the film. The film supply of the film supply is formed by a film roll. Since this has a relatively large mass, it is desirable that the film roll rotates during operation with the most constant rotational speed, but in any case this strong acceleration can be avoided. But since the removal of the film from the film feed can not take place at a constant speed, the film feed preferably has at least one buffer for the film.

"Packaging" are within the meaning of the invention filled with a product packaging, for example in the form of cans, bottles, especially in the form of

Plastic or PET bottles. "Packing groups" in the context of the invention groups, which are each composed of several packages.

The expression "substantially" or "approximately" or "approximately" in the sense of the invention means deviations from the exact value by +/- 10%, preferably by + 1-5% and / or deviations in the form of Function insignificant

Changes.

Further developments, advantages and applications of the invention will become apparent from the following description of exemplary embodiments and from the figures. In this case, all described and / or illustrated features alone or in any combination, in principle, the subject of the invention, regardless of their summary in the claims or their

Dependency. Also, the content of the claims is made an integral part of the description.

The invention will be explained in more detail below with reference to the figures of exemplary embodiments. FIG. 1 shows a schematic illustration and a top view of a device for the

Production of packaging containers according to the invention;

Fig. 2 - 4 in a schematic functional representation and in side view the

Device of Figure 1 in different operating conditions;

FIG. 5 shows a representation like FIG. 1 in a further embodiment of the device according to the invention; FIG. 6 and 7 in a schematic representation and in side view of the device of Figure 5 and a modified embodiment of this device; Fig. 8 - 12 respectively in a schematic representation and for example in side view further embodiments of the device according to the invention.

The generally designated 1 in Figures 1 - 4 device is used for

Producing packaging packages 2 by wrapping packaging groups

3, each of several to the respective packaging group

composed packaging 4, with a film, in particular plastic film, such as stretch or shrink film. In the illustrated embodiment, each packaging group 3 contains a total of twelve packages

4. Of course, the number of packages 4 per packaging group 3 also deviate from this.

The device 1 includes i.a. a conveyor 6, on its horizontal or substantially horizontal transport plane, the packages 4 in one

Transport direction A are fed, as a four-lane packaging stream, from which then the packaging groups 3 are separated in the manner known to those skilled in the packaging in which the packages 4 are provided close to each other. The transport direction A extends in a longitudinal axis L of the conveyor 6. Q denotes a transverse axis which is perpendicular or in the direction of travel

Substantially perpendicular to the transport direction A and in the embodiment of Figures 1 to 4 parallel or substantially parallel to the transport plane of the

Transporteurs 6 is oriented.

On the conveyor 6 is for producing the packaging container 2 each

Packing group 3 at a pickup position I each of two

Packing grippers 7 and gripped by their gripper heads 8 and between these gripper heads 8, which are provided in the direction of the transverse axis Q opposite each other on the feed dog 6, clamped in the raised state, i.

moved bottomless through the device 1. At the gripper heads 8, the outer packaging 4 in the respective packaging group 4 by additional Supported 8.1 support. With the packaging grippers 7, the respective packaging group 3 first passes to a film transfer 9 a stationary

At the film transfer 9 is a leading or anticipatory end of the film 5.1 of a supply 10.1 (original or film roll) of

Film feed 10 peeled film 5 ready and is suitably combined with the packaging group 3 and fixed to this, for example with a self-adhesive application. This merging and fixing takes place, for example, in that at the film transfer 9 the respective

Packing group 3 with the packaging grippers 7 briefly lowered and thereby, for example, with its bottom on the ready there and, for example. provided with the adhesive coating end of the film 5.1 is discontinued, so that the film 5 adheres to the packaging group 3 with this end.

Alternatively, it is also possible to connect the respective packaging group 3 already with the leading end of the film 5.1, while the

Packing group still gets up with its underside on a conveyor.

It is possible, for example, first to position the film end 5.1 below the transport plane of the conveyor 6, and then to promote this before further when the packing group 3 is above the end of the film 5.1. Corresponds then the conveying speed of the film end 5.1 of

Speed of the packing group 3, the film end is 5.1 arranged in the correct position and wrinkle-free below the packaging group 3 and connected to this. The packing group 3 is moved further with the packaging grippers 7 in the transport direction A, and then also by rotating or rotating the gripper heads 8 and thus also the packing group 3 about a gripper head axis GA oriented in the direction of the transverse axis Q. Below is therefore the leading end of film 5.1 always the

Peel off the film 5 from the film feeder 10 or from the supply 10.1 leading end of the film. Accordingly, the rear end of the film 5.2 is always the one produced when separating the respective length of film

Foil end of this foil length. By the movement of the packaging gripper 7 in the transport direction with simultaneous rotation of the gripper heads 8 and the packaging group 3 about the transverse axis, the film 5 is increasingly withdrawn from the film feeder 10. As soon as needed for the preferably multiple wrapping of the packing group 3

Film length is deducted, this is separated by means of a cutting or separating device 1 1 of the remaining film supply 10.1, so then wound with the further rotation of the gripper heads 8 about its common axis GA, the entire separated length of film on the packaging group 3 and

In particular, the trailing end of the film 5.2 is applied against the packaging group 3, for example, by brushing with the aid of brush elements, not shown. In spite of the separation of the length of film from the film supply, tight wrapping of the packaging group 3 with the film 5, i. To achieve the necessary film tension, takes place in the device 1 the

Wrapping the packaging group 3 on a following in the transport direction A on the film transfer 9 sliding or grinding plate or machine table 12 which has at its top a plurality of vacuum openings 13 on which the not yet wound on the packaging group 3 part length (Folienschleppe) and in particular also the trailing end of the film 5.2 rest and thereby be retained to produce the film tension. Alternatively to that

Machine table 12 with the vacuum openings 13 can also find a work table with at least one vacuum belt use. In this case, it is also possible to drive the vacuum belt with its own conveying speed, so that in this way the film tension can be easily adjusted and / or varied. Also by changing the vacuum or the negative pressure adjustment of the film tension is possible.

The finished packaging container 2 is then deposited at a delivery position VIII with the two packaging grippers 7 on a in the transport direction A to the machine table 12 subsequent feed dog 14 and released by lateral moving away at least the gripper heads 8 in the direction of the transverse axis Q for removal in the transport direction A. , In this way or

As the gripper heads 8 move apart, the support elements 8.1 are also moved laterally out of the respective packaging container 2. In order not to permanently accelerate and decelerate the film roll 10.1, which may have a considerable mass, it is advantageous to provide a dancer or buffer system, as indicated in FIG. 2 by the rollers 15. The driven at a constant or substantially constant speed

Film roll then conveys the film 5 into this e.g. designed as a dancer system buffer system. During the merging of the film 5 with the respective

Packaging group 3 is initially only a small length of film needed, so that the film supply in the buffer system or in a local buffer increases. Subsequently, the wrapping of the packaging group 3 with the film 5 sets in, while maintaining the movement in the transport direction A, then takes place

Peeling the film 5 from the film feeder 10 at an increased speed, which is then completely provided from the buffer memory. Is that for the

Wrapping the current packaging group 3 required film length withdrawn from the film feeder 10 and separated from the film supply, the film requirement initially decreases significantly again, so that the buffer memory can be refilled with constant or substantially constant rotational movement of the supply reel 10.1. This will also avoid unnecessary loading of the film 5 and ensure that the most uniform,

In particular, however, at least an abrupt acceleration-avoiding deduction of the film 5 from the film supply 10.1 takes place, although a uniform deduction of the film 5 from the film supply 10 is not possible. By using the buffer system with a dynamic buffer memory or dancer system, it is thus possible to keep the unwinding speed of the film roll during operation almost constant, while at the same time by the buffer system

different rates of decrease of the film 5 from the film feeder 10 are possible. The proper feeding of the film 5 to the film transfer 9 is monitored by a sensor.

The film feeder 10 is located below the transport path of the packaging groups 3 held on the packaging grippers 7 and is, for example, further configured so that the film 5 can be unwound at the speed of the device 1 at variable speed and / or a change in the direction of rotation of the film supply 10.1 forming supply roll possible is to be able to wind up such a withdrawn or unwound length of film again.

The feeding of the film 10 to the film transfer 9, for example, via a terminating at this position feed or guide shaft, under

Co-operation of conveyor rollers.

The cutting device is preferably provided on the feed chute or within the feed chute.

The adhesive application is applied to the leading end of the film, for example, by a dispenser for spray adhesive. Basically, the

Glue application but also be realized by a double-sided adhesive tape.

The gripper heads 8 are preferably individually controllable and / or controllable with respect to their rotational movement, but in such a way that the gripper heads 8 of the two packaging grippers clamping the respective packing group 3 7

of course synchronously and in the same direction of rotation and with the same rotational speed.

As shown in the figure 8 by the solid line 16, the

Packing gripper 7 each moves on a closed circuit 16, on an orbit in a direction perpendicular to the Greifkopfachse GA level. On a partial length of the circulation 16 between the receiving position I and the

Abgabeposition VIII, the movement of the gripper heads 8 in the transport direction A. The further partial length of the circulation 16 between the dispensing position VIII and the receiving position I forms the return for the packaging gripper 7. Furthermore, these are at least between the loading position I and the dispensing position VIII moves so that in the transverse direction Q two each forming a pair

Packing gripper 7 are opposite, and that with achsgleicher arrangement of their gripper head axis GA. The respective circulation 16 is formed by a guide. The movement of the packaging gripper 7 on the circulation 16 takes place, for example, in each case by a mechanical drive system, for example via chains and / or wheels, in a preferred embodiment but by an electric linear drive in such a way that the respective circulation 16 forming guide provided with a stator of the linear drive or as a stator of the

Linear drive is formed and the packaging gripper 7 are each designed as a movable element (runners) or mover of the linear drive. In the illustration selected for FIGS. 2 to 4, the movement of the packaging grippers 7 onto the circulation 16 takes place counterclockwise.

The formation of the circuits 16 as electric linear drives also opens up the possibility of the individual packaging grippers 7 each circulation the respective

Needs to be controlled separately from each other, but in each case in the form that at least between the receiving position I and the discharge position VIII each two packaging grippers 7 are coaxially opposite to each other with their axes GA.

Figures 5 and 6 show as a further embodiment of a device 1 a, which differs from the device 1 in that for generating the

Film tension when wrapping the respective packing group 3 two

Pressing elements 17 are provided in the form of pressure rollers, which presses the not yet wound on the packing group 3 part length of the film 5 (foil tow) against the top of the sliding or grinding plate or the machine table 12. The machine table 12 in this case does not have the vacuum openings 13, but is carried out on its upper side, for example, with an increased coefficient of friction, for example rubberized etc. The pressing elements 17 are provided in this embodiment, in each case on a pivot arm 17.1 of the packaging gripper 7, in such a way that they in the transporting direction A of the packaging group 3 clamped between the two packaging grippers 7 and in spite of the rotation of the gripper heads 8 abut constantly around their gripper head axes GA against the partial length of the film 5 which has not yet been wound up. The pressing elements 17 are moved with the packaging grippers 7 on the orbit 16.

The pressing elements 17 are for example braked rotatable rollers

Rubber. The contact pressure of the pressing elements 17 is generated for example by their own weight and / or by spring elements. The effect of the pressing elements 17 is based in particular on the fact that the

Speed of the film 5 when winding on the respective packaging group 3 is greater than the transport speed of the packaging group 3 in

Transport direction A, so that a relative speed between the film 5 and pressing member 17 results, which leads to the desired bias of the film 5. Instead of the machine table 12, a grinding plate or rubber band may be provided.

FIG. 7 shows, as a further embodiment, a device 1b, which differs from the device 1a in that a separate circulation 18 is provided for the pressing elements 17.

Figure 8 shows a schematic representation and for example in side view of a device 1 c for producing the packaging container 2 by wrapping the packaging groups 3 with the film 5, again using the moving on the circulation 16 packaging gripper 7, of which two in pairs arranged opposite hold the respective packaging group 3 clamped and during transport in the transport direction A for easy or preferably, but multiple wrapping with the film 5 to the

Turn gripper head shafts GA.

The device 1 c has in addition to the circulation 16 further circulations 19, 20 and 21, which in turn are arranged in planes perpendicular or substantially perpendicular to the Greiferkopfachsen GA of the gripper heads 8 of the packaging gripper 7, namely the circulation 19 for movers or film gripper 19.1, the circulation 20 for mover or film gripper 20.1 and the circulation 21 for several movers or film grippers 21 .1. The film grippers 19.1, 20.1 and 21.1 are each preferably designed such that they extend in a direction perpendicular to the plane of their circulation 19, 20 or 21 for gripping the film 5 over a sufficient film width. The arrangement is further made such that in the transport direction A on the circulation 19 of the circulation 20 follows and the circulation 21 below the revolutions 19 and 20 and below the movement path of the clamped between the packaging grippers 7

Packing groups 3 is arranged. Furthermore, the film gripper 19.1 move on the circulation 19 and the film gripper 20.1 on the circulation 20 in the same Circumferential direction as the packaging gripper 7 on the circulation 16, ie in the selected counterclockwise for the figure 8 representation. On the circulation 21, the local film grippers 21 .1 move in one of the circulating directions of the

Circulation 16 opposite direction, i. in the illustration chosen for the figure 8 clockwise, so that the film gripper 19.1 and 20.1 on the immediately adjacent and transverse or perpendicular to the transport direction A extending partial lengths of the revolutions 19 and 20 in opposite directions and the film gripper 21 .1 in the same direction with the film grippers 19.1 and 20.1 on the circulation 21 adjacent partial lengths of the circulations 19 and 20 move.

For producing the packaging container 2, the packaging groups 3 are in turn conveyed over the feed dog 6 in the transport direction A and then captured at the transfer or pickup position I by a pair of packaging grippers 7 and clamped between their gripper heads 8. For wrapping the packaging group 3, the free leading end of the film 5 is detected by one of the film gripper 19.1 at the film delivery 10 and subtracting the film supply 10 with this film gripper 19.1 on the transversely or perpendicular to the transport direction A extending part length of the circulation 19 at a

Provided positioning position II, so that held on the film gripper 19.1 vertical or substantially vertical partial length of the film 5 in the trajectory of the gripper heads 7 detected, to be wrapped

Packing group 3 is located and this from the receiving position I in

Transport direction A conveyed packing group 3 can move into the vertical part length of the film 5, which extends the movement space of the packaging groups 3 intersecting between the film feeder 10 and the supply position II. The film gripper 19.1 transfers the end of the film 5 to a

foil holder 21 .1 (position III), so that the packaging group 3, which already covers at least one side, is held between a foil gripper 20.1 and a foil gripper 21.1. The film gripper 21 .1 then takes over after removing the required film length of the film supply 10.1 the rear end of the film 5.2, both film gripper 19.1 and 21 .1 hold the film 5 and the separated length of film to tension. The wrapping of the respective packing group 3 by rotating the gripper heads 8 around their

Greiferkopfachse GA takes place again in the transport direction A moved Packaging grippers 7. In this case, the film grippers 20.1 and 21.1 holding the ends of the film length are moved, for example, so that the film gripper 20.1 catches up relative to the film gripper 21.1 in the transport direction A and the leading film end 5.1 is held below the packaging grippers 7

Moves packing group 3 and finally releases this foil end,

For example, after at least three-sided investment of the film on the

Packing group 3, in particular after the end of the film 5 in the gusset between the bottom of the packaging group 3 and the second, still held on the film gripper 21 .1 end of the film (position VI). Subsequently or at the same time hereby begins the actual wrapping or the actual rotation of the

Gripper heads 8 around their gripper head axis GA for single-layer or multi-layer wrapping, in a corresponding rotation 16, ie. in the representation chosen for the figure 8 counterclockwise. After several rotations of the packing group 3 (position VII), the release of the produced packaging bundle 2 takes place at the delivery position VIII, specifically for the removal of the packaging bundle 2 via the feed dog 14, e.g. to a palletizer.

In a device 1 c with reduced power (number of packaging unit 2 produced per unit time) is also possible to dispense with the circulation 21 and the local film gripper 21 .1 and the film tension when wrapping the packaging group 3, first by pulling off the film Produce the film supply 10.1, which then means, however, that with the application of the film 5 on a following in the direction of transport A packing group 3 can only be started when after the complete or almost complete wrapping the preceding in the direction of transport A.

Packing group 3, the film 5 of the film supply 10.1 or of the

Foil supply 10 was separated. FIG. 9 shows the device 1c in a different mode of operation, which differs from the mode of operation described above in connection with FIG. 8 only in that prior to the start of the actual rotation

Rotational movement of the gripper heads 8 for wrapping first the rear end of the film 5.2 of the separated length of film from the film gripper 21 .1 to the Packing group 3, for example, applied to the bottom of the packaging group 3 and then released. By rotating the packaging gripper 7 counter to the direction of rotation of the circulation 16, ie in the clockwise direction is the

Packing group 3 wrapped with the film 5, wherein the film tension is first generated by the leading end of the film 5.1 still holding film gripper 20.1 until finally this end of the film is released from the film gripper 20.1 to completely wind the film on the packaging group 3 (positions VI and VII of Figure 9). FIG. 10 shows, as a further embodiment, a device 1 d which essentially differs from the device 1 c only in that the two circulations 19 and 20 are combined or combined to form a circulation 22 on which the film grippers 22.1 move, and Although in a direction of rotation, which is equal to the direction of rotation of the packaging gripper 7 on the circulation 16, ie in the representation chosen for the figure 10 counterclockwise.

The provision position II and the film transfer III are simulated by the fact that the circulation 22 is provided with a portion 22a, on which the film gripper 22.1 the movement space of the packaging groups 3 and the

Packing gripper 7 cutting in the representation selected for the figure 10 first up to the position II / III and from there down again, so that the respective detected by a film gripper 22.1 leading end of film 5.1 is moved with the film gripper 22.1 first upwards and thereby the partial length of the film 5 held at this film end is located vertically or substantially vertically in the movement space of the packaging groups 3.

The preparation of the packaging package 2 is analogous to that in the

In connection with the method described in FIG. 9, that is to say the respective packaging group 3 conveyed via the feed dog 6 is clamped at the receiving position I between the two packaging grippers 7 and then moved through the film 5 which is held on the film gripper 22.1 and intersects the movement path of the packaging group 3 (position IV), wherein the film tension between the leading end of the film holding 5.1 film gripper 22.1 and a film gripper 21 .1 of the circulation 21 is maintained, even after the separation of the film length of the stock 10.1. When the packaging grippers 7 are moved further in the transport direction A, the film gripper 22.1 increasingly approaches the film gripper 21.1 (position V), which finally releases the rear film end 5.2, namely against the underside of the packaging group 3 the complete wrapping of the packing group 3 with the film 5, wherein first with the front

Foil end 5.1 holding film gripper 22.1 the necessary film tension is maintained, the film gripper 22.1 but finally releases the film (position VII). The packaging gripper 7 and its gripper heads 8 rotate when wrapped in one of the circumferential direction of the circulation 16 opposite

Direction of rotation, i. in the representation of Figure 10 in a clockwise direction.

FIG. 11 shows, as a further embodiment, a device 1e which differs from the device 1c and 1d in that, instead of the film grippers 20.1 or 22.1, film grippers 23 are provided, for example in the form of film holding fingers. Each film gripper 23 is pivotally mounted on a packaging gripper 7, in such a way that by pivoting the respective film gripper 23 from a starting position into a clamping position, the film 5 between the

Foil gripper 23 and the rapier head 8 is held.

In detail, the respective conveyed with the feed dog 6 packing group 3 at the receiving position I between the two packaging grippers. 7

clamped and then conveyed in the direction of transport A to the moving path of the packaging groups 3 cutting and held with their leading end of film to a film gripper 19 and moved to the position II / III slide 5. By pivoting the provided on the packaging grippers 7 film gripper 23 and then releasing the anticipatory

Film end 5.1 of the film gripper 19.1, the leading end of film 5.1 is fixed to the gripper heads 8. As the packaging grippers 7 are moved further in the transport direction A, the film 5 is drawn off the film feed 10 and finally separated, the required film tension being achieved by the film

Clamping between the film grippers 23 and a film gripper 21 .1 is generated. By rotating the gripper heads 8 about their gripper head axis GA in one Direction of rotation, which corresponds to the direction of rotation of the circulation 16, ie counterclockwise, the film while maintaining the film tension by the held on the film gripper 21 .1 end of the film is increasingly on the

Packing group 3 (items V - VII), until finally the

Foliengreifer 21 .1 releases the film, so then that of the

Packing grabs shared packaging package 2 can be removed via the feed dog 14.

FIG. 12 shows, in a schematic representation as a further embodiment, a device 1 f, which differs from the device 1 e in that the circulation 21 and the film grippers 21. 1 are dispensed with and the film tension during wrapping is clamped to the packaging grippers 7

Packing groups 3 is generated by the circulating on the circulation 18 pressing elements 17, which are not yet wound and already separated from the film supply film length (foil train) against the top of the

Press machine table 12 or a grinding plate.

The pressing elements 17 are, for example, in turn braked rotatable rollers made of rubber. The contact pressure of the pressing elements 17 is generated for example by their own weight and / or by spring elements.

It was assumed above that the film is a stretch film. Shrinkable films are also suitable as the film 5, wherein the device 1, 1 a - 1 f additionally has a shrink tunnel, to which the packaging groups 3 are supplied after being wrapped with the film 5.

All embodiments of the invention have in common that the

Packing groups 3 when wrapping with the film 5 are continuously moved without stopping in the direction of transport A, i. an operation of the device 1, 1 a- 1f with continuous movement without stopping the

Packing groups 3 takes place through the device and the packaging container 2 from the device. As a result, a high performance can be achieved with gentle treatment of the film 5 and high reliability. Everyone is in common

Devices according to the invention and in particular also the devices 1, 1 a - 1 f further that the detected by the packaging grippers 7

Packing groups 3 free of soil, i. be moved without getting on transport elements, guides, etc. between the receiving position I and the dispensing position VIII and in this case by the course of the movement path of

Packaging gripper 7, in particular by the course of the circulation 16, the trajectory of the packaging groups 3 can be adapted to the respective needs.

The devices 1, 1 a and 1 b have in common that the first merging and bonding of the film 5 with the respective packaging group 3 by fixing, for example by sticking the leading end of the film 5.1 is done. The devices 1 c-1 f have in common that the first merging and

Connecting the film 5 with the respective packaging group 3 is effected in that these packaging group clamped to the packaging grippers 7 moves into the, for example, vertically extending film 5 intersecting the movement path of this packaging group 3.

All embodiments of the invention and also of the devices 1, 1 a - 1 f have in common that then, when higher powers are required, the necessary for the production of the respective packaging container 2 length of film from the film feeder 10 as soon as possible separated while doing the necessary

Film tension through film retention or retention elements, i. through which the vacuum openings 13 having machine table 12, by the pressing elements 17, by the film gripper 20.1, 21 .1 or 22.1 is generated, and that if a reduced power is sufficient, on this Folienrückhalte- or

Holding elements can be dispensed with and the required film tension is generated by the necessary force when removing the film 5 from the film feeder 10. Through the foil holding or retaining means can be achieved by maintaining the film tension until or almost until the end of the winding advantageous and visually appealing results. In particular, the strength of the packaging packages 2 produced here increases because the packages 4 are stronger against each other due to the stretched film 5 (stretch film) be biased and the individual turns of the film with increased friction values abut each other.

To the application of the trailing at wrapping end of the film on

Packaging container 2 to improve, it can in the inventive

Procedure basically be appropriate, this end of a film with a

to provide self-adhesive adhesive application.

The circulations 18, 19, 20, 21 and 22 are each formed by at least one guide, for example by two parallel guides. The drive of the pressing elements 17 and / or the film grippers 19.1, 20.1, 21.1 and 22.1 takes place, for example, mechanically, e.g. via drive chains and / or wheels, preferably by a respective linear drive whose stator is formed by the respective guide or provided thereon, wherein the pressing elements 17 and / or the

Foil gripper 19.1, 20.1, 21 .1 and 22.1 to runners or movers of the respective

Linear drive provided or designed. In this case, in particular, there is also the possibility that the film grippers 19.1, 20.1 and 21 .1 are moved independently of each other at each revolution 19, 20 and 21 in accordance with the respective requirements.

A fundamental advantage of the device according to the invention, regardless of the particular embodiment, is in principle that an extremely thin film 5 can be used to save material. The invention has been described above by means of exemplary embodiments. It is understood that numerous changes and modifications are possible without thereby departing from the inventive concept underlying the invention. Thus, it is also at least advantageous for the devices 1 c-1 e to fix the film end of the film 5, which is first applied to a packaging group 3, to this packaging group, for example by an adhesive application applied to the film 5 or the respective packaging group 3 , For example, as a double-sided adhesive tape. LIST OF REFERENCE NUMBERS

1, 1 a - 1 f device

2 packaging containers

3 packing group

4 packaging

5 foil

5.1, 5.2 end of film

6 transporter

7 packing gripper

8 gripper head

8.1 support or holding element

9 film transfer

10 film feeder

10.1 Foil supply or film roll

1 1 separating device

12 machine table or grinding plate

13 vacuum opening

14 transporter

14.1 delivery position

15 roll

16 round

17 contact element

17.1 swivel arm

18 round

19, 20, 21 circulation

19.1, 20.1, 21 .1 Foil gripper

22 round

22a Section of the circulation 22 22.1 Foil gripper

I recording position

II deployment position

III film transfer

IV - VII position VIII delivery position

A transport

L longitudinal direction of the device 1, 1 a - 1 f

Q transverse direction

GA rotation or rotation axis of the gripper heads 8

Claims

claims

1 . Method for producing packaging containers (2) by at least

single-layer, preferably multi-ply wrapping of a respective packaging group (3) composed of at least two packages (4) with at least one film (5) on a treatment line, through which the respective packaging group for wrapping with the film (5) in one

Transport direction (A) is moved,

characterized,

the respective packing group (3) is constantly moved in the transport direction (A) without stopping at a transport speed greater than zero during the winding and until it is completely wrapped with the at least one film (5). 2. The method according to claim 1, characterized in that the respective

Packing group (3) for wrapping with the at least one film (5) about an axis (GA) rotates.

3. The method according to claim 1 or 2, characterized in that the respective packaging group (3) for wrapping with the film (5) on at least one packaging gripper (7) or at least one gripper head (8) of the

Packing gripper (7) held in the transport direction (A) is moved, and that the at least one packaging gripper (7) or its gripper head (8) during movement in the transport direction (A) for wrapping packing group (3) with the film (5) around a Gripper head axis (GA) rotates, preferably about a gripper head axis (GA) oriented perpendicular to the transport direction (A), for example around a horizontal or substantially horizontal or vertical or substantially vertical gripper head axis (GA). 4. The method according to claim 3, characterized in that the respective

Packing group (3) is clamped during movement through the treatment line and during the Umwickeins with the film (5) between at least two packaging grippers (7) or gripper heads (8), located on the Treatment path in pairs in one axial direction parallel to the gripper head axis (GA).

A method according to claim 3 or 4, characterized in that the

Gripper heads for receiving the respective packing group (3) at a receiving position (I) by moving in the Greiferkopfachse (GA) to the

Packing group (3) delivered and after wrapping the

Packing group (3) with the at least one film (5) the

Packing group (3) or the packaging container (2)

Release each other in the gripper head (GA).

Method according to one of the preceding claims 3 - 5, characterized

in that each packing group (3) is held only on the at least one packaging gripper (7) or on the at least one gripper head (8), but otherwise on the ground, i.e. on the bottom. by far from any

Machine elements, in particular of any guides through the treatment section is moved.

Method according to one of the preceding claims, characterized in that prior to wrapping the respective packaging group (3) with the at least one film by rotation of the packaging group (3)

Merging the packaging group (3) with the film (5) and / or applying a film end to the packaging group (3).

Method according to claim 7, characterized in that for the

Merging the respective packaging group (3) with the film (5) a film end (5.1, 5.2), for example, a leading end of film (5.1) of a film feed (10), preferably from a stationary

Foil (5) provided film (5) is fixed to the packaging group (3), wherein the respective packaging group (3) for this purpose, for example, at a film transfer (9) lowered to the film end (5.1) and then raised again and / or to fixing film end (5.1, 5.2) is applied to the respective packaging group (3).

9. The method according to claim 7 or 8, characterized in that for the merging of the respective packaging group (3) with the at least one film (5) by peeling it from a film feed (10) with a projecting end of this film (5.1), preferably with a first

Foil gripper (19.1) is moved to a ready position (II), so that the

Foil at least with a partial length the trajectory of the

Packing groups (3) cuts, and that to be wrapped

Packing group (3) in the transport direction (A) is moved into the movement space cutting film (5), so that the film finally the

Packing group (3) at least partially surrounds, and that after the application of a film end (5.1, 5.2) to the packaging group (3) the

Wrapping this packing group (3) by rotation.

10. The method according to any one of the preceding claims, characterized in that the wrapping of the respective packaging group (3) with the film stretched

(5) takes place, and that the film tension required for this purpose by the removal of the film (5) from the film supply (10) necessary voltage and / or by at least one Folienrückhalte- and / or holding element (17, 20.1, 21 .1, 13 ) is generated, which act on the respective, not yet wound part length of the film (5) and / or a local end of the film braking,

preferably after separating one needed for wrapping

Film length.

1 1. A method according to claim 10, characterized in that the at least one film retaining element of a vacuum opening (13) having surface (12) on which the unwound part length of the film (5) slides and / or of pressing elements (17) with the respective packing group (3) or with the packaging gripper (7) holding this packing group (3), pressing the not yet wound part length of the film (5) against a sliding surface with a preferably increased coefficient of friction, or of film grippers (20.1, 21 .1) is formed.

12. The method according to any one of claims claim 9 - 1 1, characterized in that the removal of the film (5) from the film feed (10) leading film end (5.1) with the first film gripper (22.1) or after a transfer to a second film gripper (20.1) in the transport direction (A) with the at least one packaging group (3) holding the packaging gripper (7) is moved, and that the first film gripper (22.1) or the second film gripper (20.1) the leading end of the film (5.1) for wrapping on the

Packing group (3) applies or the at least one film (5) when

Wrapping to produce the required film tension spans.

13. The method according to any one of claims 9 - 12, characterized in that

after removing a film length required for wrapping the respective packaging group (3), a rear film end (5.2) of this film length is detected by a third film gripper (21 .1) which is in the transport direction (A) with the at least one holding group of packaging

Moving packaging gripper (7) moves, and that the third film gripper (21 .1) the trailing end of the film (5.2) prior to rotation of the packaging group (3) to this or during rotation of the packaging group (3) to produce the film tension as a film retaining element holds.

14. The method according to any one of claims 3-13, characterized in that

a plurality of packaging grippers (7) and / or a plurality of first film grippers (19.1,

22.1) and / or a plurality of second film grippers (20.1) and / or a plurality of third film grippers (21 .1) each on a closed orbit (16, 19, 20, 21, 22) are moved, in their respective orbit in the same direction and with the same speed or individually controlled.

15. Apparatus for producing packaging containers (2) by means of at least single-layer, preferably multi-layer wrapping of a packaging group (3) composed of at least two packages (4) with at least one film (5) on a treatment line

Packing groups (3) through the treatment route in one

Transport direction (A) moving and rotating for wrapping

Packing grippers (7) and with a drive for the movement of

Packaging gripper (7) in the transport direction (A),

characterized in that the drive constantly moves the packaging gripper (7) in the transport direction (A) at a transport speed greater than zero, even while rotating to wrap the respective packaging group (3) with the at least one film (5).

16. The apparatus according to claim 15, characterized in that the

Packing gripper (7) each transverse or perpendicular to the transport direction (A) in pairs opposite each other for clamping one each

Packing group (3) are arranged.

17. The apparatus according to claim 15 or 16, characterized in that the

Packing gripper (7) for holding the respective packing group (3) gripper heads (8), which is for wrapping the packing group (3) with the at least one film (5) around a gripper head axis (GA), preferably about a direction perpendicular to the transport direction (A) oriented gripper head axis (GA) are rotationally driven by a rotary drive, wherein the rotary drives of the individual packaging gripper (7) or the pairs of packaging grippers (7) are preferably individually and independently controllable. 18. Device according to one of the preceding claims, characterized

characterized in that the packaging grippers (7) are guided on guides in such a way that they guide the respective packing group (3) free of ground, i. move with distance from any machine elements of the device, in particular also of any guides through the treatment section.

19. Device according to one of the preceding claims, characterized by a first film gripper (19.1), with which for merging the respective packaging group (3) with the at least one film (5) by peeling it from a film feeder (10) with an anticipatory Foil end (5.1) is movable into a ready position (II), so that the film at least part of the length of the movement path of the packing groups (3) intersects and to be wrapped packaging group (3) is moved into the movement space intersecting film (5).

20. Device according to one of the preceding claims, characterized in that at least one of the film (5) to the respective

Packing group (3) applying and / or the film (5) during wrapping holding film gripper (20.1, 21 .1, 22.1) in the transport direction (A) with the at least one packaging group (3) holding the packaging gripper (7) is moved.

21. Device according to one of the preceding claims, characterized by at least one Folienrückhalte- and / or holding element (17, 20.1, 21 .1, 13) for generating the necessary during wrapping film tension.

22. The apparatus according to claim 21, characterized in that the at least one film retaining element of a vacuum opening (13) having surface (12) on which the not yet wound part length of the film (5) slides and / or of pressing elements (17) with the respective packing group (3) or with the packaging gripper (7) holding this packing group (3), pressing the not yet wound part length of the film (5) against a sliding surface with a preferably increased coefficient of friction, or of a film gripper (20.1, 21 .1) is formed.

23. Device according to one of the preceding claims, characterized

in that a plurality of packaging grippers (7) and / or more

Foil gripper (19.1, 20.1, 21 .1, 22.1) are provided, each on a closed orbit or a closed circuit (16, 19, 20, 21, 22) are moved, by a mechanical drive, preferably by an electric Linear actuator.

24. Device according to one of the preceding claims, characterized by a film feed (10) for providing the at least one film (5) by peeling off a film roll, wherein the film feed (10) has at least one buffer system (15) for the film (5) which, in the case of a continuous or substantially continuous removal of the film from the film roll, enables a discontinuous delivery of the film (5) to the film supply (10).