This application is the national stage under 35 USC 371 of international application PCT/EP2015/064673, filed Jun. 29, 2015, which claims the benefit of the Jul. 18, 2014 priority date of German application DE 102014110107.3, the contents of which are herein incorporated by reference.
The present invention relates to a container treatment machine for treating containers.
Container treatment machines for treating containers typically have a rotor that that conveys the containers to various treatment devices, such as sprayers and blowers. These containers must be held. A typical holding device includes tongs that project radially outward from a conveyor wheel and arranged on a carrier. The carriers then rotate by way of shafts on the conveyor wheel so that the containers, which are fed upright, can be turned about a horizontal axis so that they may be sprayed out and blown out. The carriers can also be displaced radially on the conveyor wheel so as to be able to keep the containers as closely and evenly spaced apart as possible and to avoid collisions when turning.
In one embodiment, the invention features at least one transport element that has container holders and that can be driven to rotate about an axis of rotation and with which the containers to be treated, which are fed through a container inlet, can be conveyed to treatment stations and, after treatment there, to a container outlet.
An object of the invention is to further develop a generic container treatment machine so that the containers can be treated while they are upside-down, for example, for rinsing, for chemical or physical treatment (UV light, radioactive irradiation, electrostatic discharge etc.) or for gauging the container's interior.
According to the invention, the transport element together with the container holders is arranged to be able to pivot about a horizontal axis by way of a pivoting device. As the transport element is pivoted, its container holders are pivoted between feeding positions in which the containers are oriented with their container openings upward and a treatment position in which they are oriented with their container openings downward. The advantage of the inventive device lies in the fact that the transport element facilitates the feeding of the machine with containers and a simultaneous pivoting of a plurality of containers into an upside-down position with technically simple means.
In this way the transport element of the container treatment machine, also referred to hereinafter as “machine” for short, can be configured in an embodiment as an arc ring, i.e. preferably as an arc ring of no more than 180°. The angle covered by the arc ring may also be greater than this however.
On its outer periphery this arc ring has container holders that are filled with containers in a feeding position at the container inlet. After each filling with a container, the transport element rotates on by one pitch, corresponding to the index distance between the container holders, until all container holders of the transport element have been fed. The entire transport element is then pivoted about a horizontal axis by a pivoting device and preferably through an angle of 180° so that, as the transport element is pivoted, the containers fed in the feeding position with the container opening pointing up are rotated into a treatment position in which the container opening is essentially pointing down. The pivoting device can, however, be configured to rotate the transport element through a full circle of 360 degrees.
In some embodiments, the transport element is held on a carrier, so that it can be rotated by a rotary drive, and the pivoting device incorporates a pivot drive, for pivoting the carrier. This embodiment is very easy to realize as it makes use of a conventional design of a transport element that is mounted so that it can only pivot by way of the pivoting device. Existing container treatment machines can also be upgraded with the pivot function in this way.
It is usual for the transport element to be configured as a transport star that comprises the container holders around its outer periphery. Recesses that match the geometry of the containers are usually configured in the container holders on the outer periphery of the transport element. However they can also be attached to the transport element as discrete elements taking the form of clamps or grippers that act on the container circumference or on the container mouth.
It is preferable for the container treatment machine to comprise at least one guide element, such as a guide plate, that ensures that the containers stay in the container holders while the transport element is pivoted.
The treatment position is preferably provided with spray jets that are arranged beneath the container mouth or that can also project into the containers when they are pivoted into the treatment position by way of the transport element and the pivoting device. The containers can then be easily rinsed in this way. To make the introduction of the spray jets into the containers, e.g. bottles or kegs, easier, the spray jets can also be vertically movable so that the spray jets can be introduced vertically upward into the containers once the latter have reached their treatment position.
The pivot angle of the pivoting device is preferably 180°, with which the containers are tipped from a position in which the container opening is vertically upwards to a position in which the container opening is vertically downwards. This is a position that is very well suited for treatment. In this position the containers can, for example, be cleaned by a spray jet, by an electrostatic discharged formed through a conducting pathway of ionized air, or gauged by means of an internal measuring probe.
It is of course not necessary for the transport element to comprise the container holders over part of a circle only, or for the transport element itself to be configured over part of a circle only. It is also possible for the transport element to be configured over a full circle and to comprise container holders at equal angular distances, also referred to as the “pitch,” over its entire outer periphery. In this case all container holders can be pivoted over the full circle, in which case the container treatment machine should preferably be configured so that the pivoting of the transport element is accompanied by a translation. This permits the treatment position of each container to be spaced apart from the feeding positions. This can be easily realized, for example, if the transport element is held on a carrier, e.g. a pivot arm, which pivots the transport element not only through 180° but also sideways out of the region of the feeding positions altogether. The carrier or pivot arm is preferably oriented at right angles to the axis of rotation of the pivoting device.
In the treatment position for each container, the container treatment machine preferably contains at least one upward-facing spray jet that projects into the container when the latter is upside-down in the treatment position. In this way the container treatment machine can easily be realized as a rinsing machine for containers.
In this case the spray jets are preferably arranged so as to be vertically movable so they can be introduced over some distance into the container interior to ensure thorough cleaning of all regions of the container interior.
In a readily realizable embodiment of the invention, the spray jets of the treatment positions are arranged at a vertically movable distributor, in which case the spray jets are moved not individually but together by way of the distributor. This arrangement is technically simple to realize.
The distributor preferably contains a horizontally extending distributor pipe curved in the manner of an arc of a circle such that it extends at least under part of all treatment positions of the machine and preferably under all treatment positions. In a simple embodiment, the distributor function is combined with the structural support function of the distributor for the spray jets. A plurality of contiguously arrayed distributor pipes having different spray media can also be provided.
A plurality of jet strings having different spray media can also be arranged, in which case the containers can be moved from spray station to spray station by a pivoting and/or rotary motion.
Preferably the transport element is a transport or transfer star comprising, on its periphery, a plurality of pocket-like container holders that are open on the periphery side and that are provided at equal angular distances from one another relative to the axis of rotation. The machine can be easily index-operated in this way. The control of such a machine is simple to realize because the index increments are identical. The transfer stars can, however, also be equipped with grips or clamps to hold the containers so that pocket-like container holders can be dispensed with.
In this case the transport or transfer star need not cover a full circle of 360° but can also encompass an arc of more or less than 180°, e.g. in an embodiment as an arc ring. This simplifies realization of the pivot movement.
The container treatment machine preferably contains at least one conveyor device for feeding and removing the containers, with at least part of the conveyor device located beneath the transport element being pivotably arranged. On the one hand, this allows the conveyor device to be pivoted out of the way during the pivoting of the transport element so that they do not impede one another's movement. Because of this it is then also possible to position two or more transport elements, which can be rotated or pivoted independently of one another, on one pivot axis, which requires a pivoting range of 360°. On the other hand, easy access to the container treatment machine from below is possible in this way. In this case the pivotable part of the conveyor device is preferably configured so that it can be pivoted downward. This creates a space beneath the transport element without needing additional space at the sides.
If a part of the conveyor device is pivotable, then the pivoting of that part of the conveyor device can be synchronized with the pivoting of the transport element by way of the pivoting device. This can be accomplished with a controller of the container treatment machine and/or a controller of the filling plant.
The invention also relates to a filling plant that has a container treatment machine according to any one of the previous embodiments. In addition to the container treatment machine, the filling plant also contains at least one conveyor device and a filling device for the containers.
The containers can be bottles, PET bottles, or glass bottles, cans, kegs or party cans, to name but some.
The containers need not necessarily be pivoted through 180° although this represents the preferred embodiment. The containers can also be rinsed when in a position in which they are not exactly aligned vertically downward.
The invention is described below by way of example by reference to the schematic drawing in which:
In
The containers 36 enter through a container inlet 34 in feeding positions in which, after the complete feeding of the transport star 24, the containers 36 are arranged in the container holders 28 so that they are aligned with their container openings 38 pointing upwards.
The container treatment machine 10 also comprises a container outlet 40 onto which the containers 36 are transferred following their treatment in the treatment machine. A conveyor device 42 forms both the container inlet 34 and the container outlet 40.
The transport star 24 covers a little less than 180° of an arc of a circle. When fully fed, it has seven feeding positions. As a result, it can hold seven containers for simultaneous treatment.
Upon actuation of the pivoting device 16, the rotary drive 22 pivots. As it pivots, so does the transport star 24, via the hub 29. The transport star 24 thus pivots from the feeding position, shown in
The distributor pipe 46 contains, for example, seven spray jets 50 directed vertically upward. These correspond to the seven treatment positions of the fully fed container-treatment machine 10, as depicted in
The mode of operation of the container-treatment machine 10 in
The containers 36 are fed to the container holders 28 of the transport star 24 via the container inlet 34. The transport star 24 is configured over an arc of a circle. The extent of the arc is slightly less than 180°. The transport star 24 has, on its outer periphery, the seven container holders 28. When the transport star 24 is fully fed, these correspond to the seven feeding positions.
The containers 36 are fed to these container holders 28 by the feeding operation shown in
When the pivoting device 16 is actuated, the pivot shaft 20 rotates. As a result, the entire transport star 24, together with the container holders 28 and the guide plate 32, rotates. This turns the containers upside-down beside the conveyor device 42. In the process, the container openings 38 of the containers 36 end up lying above the spray jets 50 of the distributor pipe 46.
The treatment position shown in
In the treatment position shown in
The treatment machine shown in
The treatment machine 60 as shown in
Because a full-circle transport star 62 has to be pivoted in the embodiment shown in
In the embodiment of
The container treatment machine 100 also comprises a container inlet 34 and a container outlet 40.
In this embodiment, additional guides (not shown) can be provided to hold the containers in the container holders 28 during the pivoting maneuver. If the containers 36 are made of ferrous metal, they can also be held in the transport element 104 by magnetic holders, in which case no additional guides are necessary. When, in the treatment position shown in
Finally,
The treatment machine 120 comprises first, second, and third positions 1, 2, 3. Above the first horizontal treatment position 1, which is configured as a filling position, a filling device 128 is arranged so that, in the plane of projection, it can be moved according to the double arrow as well as up and down. As a result, its filling jets can be arranged above or inside the container openings. The containers 36 are fed to the first treatment position 1 of the container treatment machine 120 by a conveyor device 42 and are transferred to the container holders 28 as the transport star 24 rotates. Then, the pivot arms 126 are turned by way of the pivoting device 124 from the first treatment position 1 to the second treatment position 2.
The second treatment position 2 is turned on a horizontal axis of rotation, square to the plane of projection, by 120 degrees relative to the horizontal first treatment position 1 such that the containers 36 are in an approximately upside-down position. In this position, there is arranged a spray device 130 with spray jets 50 that can be moved relative to the containers 36 located in the second treatment position 2 in such a way that the spray jets 50 are directed into the container interior. In this position, the containers are treated with a treatment medium such as a disinfectant or a fungicide.
The entire path from the second treatment position 2 to the third treatment position 3 is intended as a drip section to remove as much of the treatment medium sprayed into the containers 36 by the spray device 130 from the containers as possible. An optional gas blow-in device can be arranged in the treatment position 3 to remove remaining traces of the spray medium.
Finally, the pivot arm 126 of the pivoting device 124 rotates onward so that it re-enters the treatment position 1 where the containers 36 that have been pre-treated in the second and third treatment positions 2 and 3 can now be filled by the filling device 128. The advantage of this embodiment is that the cycle time for the treatment in the first, second, and third treatment positions 1, 2, 3 can be significantly reduced by there being three pivot arms 126. A continuous full-circle rotation of the pivoting device 124 with brief stops at the treatment positions also produces a more fluid overall motion than a pivoting device in which the containers are pivoted back and forth through degrees, for example.
It was assumed above that the pivoting motion of the pivoting device 16, 106 takes place in alternate pivoting directions so that the pivot angle of the pivoting device 16, 106 does not exceed 360°, thereby simplifying the transmission of media, control signals and operating energy since with this modus operandi, the rotary transmitters or rotary bushings can be dispensed with. Alternatively, provision is made for the pivoting device to also execute pivot angles that exceed 360°. The advantage of this option is that the time required for the pivoting movements can be reduced in certain applications.
Only one treatment medium has so far been assumed for the sake of simplicity. However, nothing prevents the apparatus as described herein from using a plurality of, and also different, treatment media.
It has so far been assumed, for the sake of simplicity, that the spray jets 50 can only move vertically. According to the invention, the spray jets 50 can also be configured to move horizontally instead of vertically, or to move horizontally in addition to vertically. The same also applies to the distributor 44.
It has also been assumed so far that the jets for the treatment medium are only arranged positioned at the treatment stations provided. However, it is also possible for jets for the treatment medium/media to be arranged between two treatment stations. This configuration also allows a container to be treated, for example with a spray or cleaning medium, en route from one treatment station to the next. The spray jets may also be disposed around the periphery of the transport star 24 so that the exterior of the containers can be treated.
For the sake of simplicity, it has always been assumed so far that the container holders are pockets that open towards the periphery. But this is not essential. In some embodiments, the container holders are configured as holding, gripping, or clamping systems that hold the containers by any one or more of the container's base, its body, its mouth, and a region under its mouth.
The features of the embodiments described above can be combined with one another in any desired way so far as is technically feasible. It is pointed out that individual technical components of the inventive container treatment machine can be configured singly or in multiples. Functional elements can also be subdivided over multiple components as complete functional elements or as part-elements. This applies in particular to the controller of the container treatment machine, which can be incorporated in the control system for an entire filling plant. The invention can be varied within the extent of protection conferred by the following claims.
Number | Date | Country | Kind |
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10 2014 110 107 | Jul 2014 | DE | national |
Filing Document | Filing Date | Country | Kind |
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PCT/EP2015/064673 | 6/29/2015 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
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WO2016/008706 | 1/21/2016 | WO | A |
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Number | Date | Country | |
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20170166431 A1 | Jun 2017 | US |