Patent Application
20140352868
The invention relates to an apparatus for handling containers, and in particular, to an apparatus for bundling containers.
Containers, as described herein, include, for example, bottles, cans, tubes, pouches, being made from metal, glass and/or plastic. Such containers include PET bottles and other packaging elements, in particular those that are suitable for the filling of liquid or viscous products, and containers already combined into groups, i.e. multipack groups of containers.
Such containers have a contact region that is executed in a spherically arched manner. Because of the shape of this contact region, containers can roll off against one another around a peripheral path, i.e. at a “roll-off ring.” With glass bottles that have been used many times, this can be seen, for example, from the wear ring that is usually recognizable in bright accentuation. In the case of PET bottles such “roll-off rings” can be arranged not only in the head region but in the foot region also.
It is known that containers such as glass bottles or PET bottles are capped after filling and then provided with one or more labels. To this end, one or more individual labels are, for example, applied to the container with an adhesive as shown, for example, in DE 40 13 938 or DE 197 12 193. It is also known for the container to be fully enveloped with a label sleeve, which is often called a roll feed label. DE 201 10 763 discloses such a sleeve labeller in which the sleeve label is taken from a storage roll, cut to a suitable length, and then stretched and pulled over the bottle. The length of sleeve then contracts so that the sleeve label sits tightly against the surface of the bottle.
The roll feed method and such an apparatus are known from DE 102 43 701. The bottle is wrapped in a label whose beginning is stuck to the container and whose end is stuck to the label's beginning.
Especially for the application of a plurality of individual labels to a bottle, it is known for the bottle to be aligned on the labeling device such that, for example, the belly and breast label, or the decorative image on the cap, are disposed in a defined position relative to one another. The bottles that are labeled in this way are often subsequently combined on packaging machines to form bundles. In particular, a group of bottles or containers, often four or six individual bottles, are wrapped in a film that is then shrunk to provide a stable sales unit.
In detail, the production of the bundles is effected e.g. in the manner that the containers are fed standing on a transport plane of a transporter and with their container axes oriented in vertical or essentially vertical direction in a bulk transport or in a wide container stream in which the containers are randomly oriented such that their distinctive container features and/or furnishing features can face any direction. This wide container stream is then converted into a plurality of single-track container streams by passageway division. The compartmenting of the containers that form the subsequent bundles or their container groups from the single-track container streams, the bringing together of the necessary number of containers to form a compacted container group in which the containers lie against one another by a plurality of envelope or peripheral surfaces, i.e. by the contact or touching surfaces, and the connecting of the containers of each container group to form the compact and firm as well as stable bundle, are carried out in further process steps.
The combining or forming of a plurality of articles into a group of articles and from the groups of articles to produce firm and/or transportable storage and transport units or bundles using shrink films (e.g., as described in U.S. Pat. No. 7,726,464) is known to the skilled person. One of the disadvantages of known methods is that the films used, and in particular the shrinking-on of the films by the application of heat or energy, causes considerable expense.
It has also already been proposed to produce transportable bundles by the containers that are formed to a container group being packed, i.e. connected together into a bundle, by a strapping that encompasses the container group in the manner of a loop (DE 10 2009 025 824, DE 10 2009 044 271, and DE 41 26 212), this constituting a particularly inexpensive and simple way of producing bundles or transport and storage units. The strapping can also be bonded with the containers.
One disadvantage of strapping, however, is that when one container is first removed from such a bundle, the remaining containers are no longer held together by the strapping. This is the case not only when the strapping is removed or cut but also when a container is removed from the bundle without severing the strapping.
Moreover transporting such bundles on a belt conveyor always presents the danger that cylindrical or chiefly cylindrical articles, such as cans, bottles or containers, assume a nesting position, i.e. slip into a gap in the adjacent row, due to vibration, impacts etc. With known bundles, a very high tension must be applied to the strapping in order to avoid this.
DE 10 2006 037 105, on the other hand, relates to a method for the combining of bottle packets in which a rotary star wheel that presses bottle necks into clips on flat carriers is provided on both sides of a track. The bottle packet is also wrapped with a tape or an envelope, which acts as a film.
According to DE 23 31 193, an adhesive is applied to containers in narrow surfaces or rows, with contiguous surfaces that are not provided with adhesive being intended to enable one to grip and carry the package. The containers stick to one another at the adhesive points. EP 2 096 039 also relates to containers being provided with an adhesive, with a shrink film also being disposed around the bottle packet however.
The object of the invention is to provide an apparatus and a method for producing bundles of the type mentioned at the outset, whereby despite the lack of an enveloping film and/or despite the lack of strapping, the articles are always prevented, in a simple manner, from adopting a nesting position while being transported, and even after one or more articles have been removed from a bundle, the cohesion of the remaining articles in the bundle is maintained or can be restored.
The handling apparatus includes one or more furnishing carousels on which both one or a plurality of labels or print images and a contact adhesive and/or adhesive application is performed for the immediately subsequent compacting of the containers and bundle formation. For this purpose, the containers can be rotated about a vertical axis on the furnishing carousel, with ideally a suitable plurality of bottom guides or top guides provided at each handling position of a container on the furnishing carousel. Suitable bottom guides include baseplates and turntables. Suitable top guides holding-and-centering tulips.
As used herein, “containers” includes PET bottles, bottles, cans, tubes, pouches that are made from metal, glass and/or plastic. The term “containers” also refers to other packaging elements, in particular those that are suitable for the filling of liquid or viscous products, and containers already combined into groups, i.e multipack groups. The containers of the bundle are arranged in non-nesting position.
As used herein, the terms “contact adhesives” or “adhesives” refers to all materials or masses that facilitate an adhesive bond between containers, in particular compounds, materials or masses that, when applied in the liquid or semi-liquid state, form a self-adhesive coat and/or bring about an adhesive bond under the application of pressure and/or energy and/or after curing or cross-linking (including through application of energy). The terms “contact adhesives” and “adhesives” also includes multilayer materials, e.g. those comprising at least one carrier material that is coated with a material with which an adhesive bond between containers is possible, are therefore adhesively active on at least two sides. Such adhesive agents can also be referred to as “pads.”
As used herein, an “adhesive” container is one that is provided with a contact adhesive and adhesive application. The contact adhesive and adhesive is preferably selected such that the containers can be detached from the bundle and separated from one another by hand and without damage.
It is conceivable for liquid adhesive agent to be applied by the application elements. It is possible to apply a low-viscosity UV-curing adhesive. A hot-melt adhesive would also be suitable. However, as it cools very rapidly, it could lose its adhesive properties before the containers of the bundle are sufficiently bonded to one another. A UV-curing adhesive is also beneficial due to the particularly easy setting of its desired properties.
A corresponding curing station or curing section is expediently provided downstream of the application elements statically or along a linear transporter above and, if necessary, also below. A curing station can, for example, be a tunnel with UV-lighting. The curing station is preferably arranged downstream of the handling apparatus, preferably at the linear transporter.
It is beneficial for the handling apparatus to have a furnishing carousel, an inlet apparatus and an outlet apparatus. The inlet apparatus may be configured as an inlet star-wheel, inlet screw etc.
An apparatus that holds the containers so that they cannot rotate should ideally be selected for the outlet apparatus. For example, an outlet star-wheel can be provided in whose pockets are disposed a rubber-like, anti-rotation surface or elements. Ideally an outlet star-wheel is provided with a suction element at each receptacle for a bottle or container, the suction elements being connected to a vacuum pump. Ideally, the vacuum supply is configured in such a way that it is only active within a defined angular range of the outlet star-wheel.
The inlet apparatus effects an adaptation of the incoming container stream to the pitch of the furnishing carousel such that the respective containers can be transferred to the furnishing carousel without a problem. The containers can be transported onward at predetermined intervals with the outlet apparatus.
It is expedient if the bottom guides are implemented as turntables, and/or with the top guides implemented at the holding end as packing-or-centering tulips. In this way the respective container is clamped between the turntable and the packing-or-centering tulip and is held securely in position.
A rotation of the individual container that is additional to the rotation about the axis of the furnishing carousel can be effected with the motorized drive of the turntable and/or of the top guide. Consequently, as it moves over its transport path, the container is rotated as required about the axis of rotation of the furnishing carousel and relative to the latter such that, in the peripheral direction of the container, furnishing features such as labels can be applied and a plurality of contact and touching surfaces of the container can also be provided with contact adhesive or adhesive.
It is an advantage if application elements are provided such that, when seen in the direction of rotation of the furnishing carousel, the elements follow one another. It is also an advantage if application elements are arranged both radially on the inside and radially on the outside, since the rotation time for the application of a plurality of quantities of contact adhesive or adhesive to the periphery of a container is thereby reduced.
By means of the drives, in interaction with suitable inspection devices, the standing containers can also be favorably aligned on certain container features and/or furnishing features, i.e. on so-called embossings for example, and then be container-specifically provided with contact adhesive and/or adhesive such that the containers of a bundle are accommodated within the bundle so as to be identically aligned relative to one another.
In a preferred embodiment, two application elements are arranged so that one is above the other, with any subsequent application elements being likewise arranged one above the other. Each application element can thus always provide precisely one container region, i.e. one section of the contact and touching surface, with contact adhesive and adhesive. The application elements can naturally be adjustable, i.e. adjustable in their inclination relative to each spatial axis, for example in the event of a spraying or sprinkling application of contact adhesive and adhesive. The application elements can also be entrained with the container concerned over at least a partial distance, although this is not absolutely necessary.
The handling apparatus, preferably the furnishing carousel or outlet apparatus, is immediately followed by a compartmenting or compacting section or compartmenting or compacting apparatus, e.g. a linear transporter, with the containers provided with the still wet or not-yet activated contact adhesive and adhesive being combined into bundles and transported onward. Static and/or moving guide elements can be provided on either side of the linear transporter and entraining elements may also be provided, each being associated with a bundle.
The guide elements are configured, for example, as guide rails that guide and support the bundles and/or the containers of the bundle between them. It is conceivable for the guide elements to be rigidly executed. It is, however, also possible for the guide elements to be configured as travelling elements such that the containers or bundles do not exhibit a speed relative to the laterally disposed guide elements. A lateral pressure for adhesively bonding the containers of the bundle can be generated with the laterally disposed guide elements. In other words, the guide elements not only have the function of guiding and supporting but also the function of generating a pressure acting on the containers that when looked at square to the transport direction compresses the containers or the bundle, i.e. draws them nearer to one another, pressing them against one another so as to effect an adequate adhesive bond.
In a preferred embodiment, the entraining elements are arranged square to the transport direction and extend fully across the linear transporter, such that when seen in transport direction, they are disposed behind the bundle such that they push the bundle along before them. As a result of this, a force is beneficially generated that assists an interconnection of the containers when seen in or against the transport direction, and that assists a compression.
In order to improve the bond between the containers of the bundle when seen not only square to the transport direction but in the transport direction as well, the entraining elements can impart to the containers or the bundles a speed acting relative to the transporter when seen in transport direction. If the conveying speed of the entraining element or elements is greater than the conveying speed of the linear transporter, this brings about a pushing or sliding of the containers or of the bundle from the inlet side towards the outlet side. It is apparent that the pushing force can increase the adhesive bond considerably.
In a preferred embodiment the entraining elements can be configured as a bar, i.e. as an entraining bar. The entraining elements may also be themselves driven and/or be in connection with the guide elements. In addition to the functions already mentioned, the guide elements could also assume the guiding function for the entraining elements. If the guide elements are driven, i.e. are provided to circulate, it is very much in the interest of the invention to rigidly attach the entraining elements to the guide elements, in which case the above mentioned relative speed could be generated by means of the guide element drive. The guide elements could also be adjustable in the transverse direction such that the apparatus is also adjustable for different container dimensions. The conveying speed of the linear transporter, of the guide elements and/or of the entraining elements can be individually adjusted, and suitable control centers or central control units of an overall installation can be used for this purpose.
It is possible also to provide the bundle in the region of the compartmenting and/or compacting unit with a carrying element, for example a handle, to which end suitable devices may be provided that are arranged downstream of the outlet side or at a suitable position on the linear transporter.
The carrying element can of course be attached to the bundle or between adjacent containers of a bundle with the aforementioned contact adhesive or adhesive by being glued in at same time during the compacting and convergence of the containers after the furnishing carousel or the outlet in the region of the compartmenting and/or compacting unit.
By these means, the invention provides an apparatus for producing a bundle that, despite the lack of an enveloping film and/or a strapping, prevents, in a simple manner, the containers from adopting a nesting position while being transported. The aforementioned film can thus be entirely dispensed with.
Even after one or more containers are removed from a bundle, the cohesion of the remaining containers in the bundle is maintained. Dispensing with a film or strapping band (filmless bottle pack) eases the burden on the environment by avoiding waste, so also saving on resources used to produce the films or strappings that are usually produced from plastic. The containers of a bundle are stuck directly to one another during transport, i.e. in the continuous operation of the apparatus for producing bundles, i.e. the packaging machine. A filmless bottle pack can also be achieved with a minimum adhesive application that exhibits an adequate bond of the individual containers to one another.
The particular advantage however lies in the fact that by providing application elements for contact adhesive and adhesive on a labeling carousel, the packaging machine and the customary shrinking tunnel can be dispensed with. This constitutes a considerable advantage from the viewpoint of both energy and cost.
In another aspect, the invention features an apparatus for handling containers and/or for producing bundles from labeled and/or decorated containers the apparatus comprising a handling apparatus, the handling apparatus comprising a container input, a furnishing carousel, a furnishing module, an application element, and a grouping device, wherein the furnishing carousel rotates about a central axis, wherein the furnishing module is in a region of the furnishing carousel, wherein the application element is in the region of the furnishing carousel, wherein the furnishing module applies a furnishing feature to a surface of a container, wherein the application element applies adhesive to the container on a surface outside that surface of a container that is provided with a furnishing feature by the furnishing module, and wherein the grouping device is selected from the group consisting of a compartmenting unit and a compacting section, wherein the grouping device is provided immediately after the furnishing carousel and/or an outlet apparatus, wherein the grouping device causes grouping, compacting, and temporary pressing together of a predetermined number of containers, and wherein the container input is selected from the group consisting of a single-track container feed, a multi-track container feed, a single-track container stream, and a multi-track container stream, whereby the containers are combined to form a bundle and transported onward.
Further embodiments, advantages and possible applications of the invention arise out of the following description of embodiments and out of the figures. All of the described and/or pictorially represented attributes whether alone or in any desired combination are fundamentally the subject matter of the invention independently of their synopsis in the claims or a retroactive application thereof. The content of the claims is also made an integral part of the description.
The invention is explained in detail below through the use of an embodiment example with reference to the figures. In the figures:
In the different figures, the same reference character in each case identifies identical parts, which is why they are generally described only once.
In the present example, a handling apparatus 5, 5.1, 5.2 is provided for each of container streams 4.1 and 4.2, with each respective handling apparatus 5.1, 5.2 having a plurality of bottom guides 6 and top guides 7 for containers 3. Along the transport path of the containers 3, one furnishing module 23, as a labeling module, is first provided at each handling apparatus or at its furnishing carousel 12, 12.1, 12.2 and subsequently two application elements 8 are arranged. In the embodiment depicted in
Containers 3 are transported from an inlet side 9 towards an outlet side 10 (axial transport direction 14), with furnishing modules 23 and application elements 8 being provided at the handling apparatus 5 for the application of contact adhesive or adhesive, and with containers 3 being combined to form a complete bundle 2 downstream of handling apparatus 5 and transported towards an outlet side 10.
In one embodiment, the bottom guides 6 on the furnishing carousel 12 are implemented as motor-driven turntables, and the top guides 7 are implemented as packing-or-centering tulips that are mounted at the holding end, or configured as such. A container 3 is thus held securely in position between a turntable 6 and a corresponding packing tulip 7. As stated previously, such turntables and packing-or-centering tulips are known from industrial labeling machines.
As can be seen in each of
The containers can also be rotated so as to provide contact adhesive and adhesive at a plurality of contact and touching surfaces, for example fixed 90° increments around the periphery of the container. An aligning or rotating for example at and/or between application elements 8 following in direction of rotation 19 is indicated by reference character 20 in
In a preferred embodiment, two application elements 8 are arranged one above the other, with subsequent application elements 8 being likewise arranged one above the other. Each application element 8 can thus always provide precisely one container region, i.e. one section of the contact and touching surface, with contact adhesive and adhesive. The application elements 8 can naturally be actuated for adjustment so that they can be adjusted, for example, in their inclination relative to each spatial axis, for example in the event of a spraying or sprinkling application of contact adhesive and adhesive. The application elements 8 can also travel with a container 3 for at least part of the distance traversed by the container 3. However, this is not normally necessary.
A linear transporter 15, which functions as a compartmenting and/or compacting section 22, is arranged immediately downstream of the outlet apparatus 13 or of both outlet star-wheels 13.1 and 13.2. The outlet apparatus 13 or the two outlet star-wheels 13.1 and 13.2 bring adhering containers 3 together square to an axial transport direction 14 and transfer adhering containers 3 in pairs to a linear transporter 15, as depicted in
In the process, two adhering containers 3 are first pressed together at their contact-and-touching surfaces. The linear transporter 15 is configured to combine a plurality of container pairs to form a bundle 2. For example, when three container pairs are combined, the bundle 2 will have six containers 3. For this purpose, the linear transporter 15 may have entraining elements 21, and, in addition, lateral guide elements 16 as depicted in
As shown in
In a simpler embodiment, the outlet apparatus 28 has recesses and/or surfaces that, by virtue of their enhanced coefficient of friction, avoid or prevent rotations of containers 3. Examples of such recesses and/or surfaces include a rubberizing or tooth-like moldings, or a combination thereof.
A linear transporter 15 follows the handling apparatus 5 or outlet apparatus 13. The linear transporter 15 functions as a compartmenting and compacting section. Static and/or moving guide elements 16 are disposed on either side of the linear transporter 15.
In the present example, entraining elements 21 are provided, each of which is associated with a bundle 2. The entraining elements 21 bring together containers along the axial transport direction 14, for example by pressing together containers 3 of a bundle 2. The guide elements 16 also exert a pressing force on the containers 3 in a direction square to transport direction 14. This results in holding the containers together for a defined length of time, which favorably influences formation of a good adhesive bond.
In some embodiments, there is a need for a curing station 17, such as a UV curing station for UV-curing adhesive. This curing station 17 is beneficially positioned on the linear transporter 15. Alternatively or in combination, a UV radiator 26 that extends along the transport direction can be arranged above the grouped containers or above the bundles 3.
An alternative compacting station is shown in
In the example shown in
Simultaneously with or immediately after the aforesaid release of the centering tulips 31 in the case of a third and final container pair of a desired container group that is to form a bundle 2, the entraining element 21 is brought closer by a bottom drive 29. The speed of the bottom drive 29 is greater than the previous transport speed or than that of the linear transporter 15 in the region of the second partial length 22.2 of the compartmenting and compacting section 22 such that the container group is accelerated and compacted to form a bundle 2. The curing or drying of a contact adhesive or adhesive 25 is thus carried out according to the embodiment above. Alternatively the first container pairs can be stopped or retarded in their transport speed until all container pairs of a bundle 2, here three per bundle 2, are in contact.
A variant in which the group of containers 3 belonging to a bundle 2 are held by centering tulips 31 until the rearmost of the container pairs that belong together is connected, or in which containers 3 are guided and held by their heads until the bundle is finally formed, i.e. including the compacting in transport direction, is not shown.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2011 119 966.0 | Dec 2011 | DE | national |
This application is the national stage of PCT application PCT/EP2012/004189, filed on Oct. 2, 2012, which claims the benefit of the Dec. 2, 2011 priority date of German application 10 2011 119 966.0, the contents of which are herein incorporated by reference.
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/EP2012/004189 | 10/2/2012 | WO | 00 | 5/30/2014 |
