EP4584165A1 - Etikettierstation für eine etikettiermaschine zum etikettieren von behältern - Google Patents
Etikettierstation für eine etikettiermaschine zum etikettieren von behälternInfo
- Publication number
- EP4584165A1 EP4584165A1 EP23768489.9A EP23768489A EP4584165A1 EP 4584165 A1 EP4584165 A1 EP 4584165A1 EP 23768489 A EP23768489 A EP 23768489A EP 4584165 A1 EP4584165 A1 EP 4584165A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- labeling
- containers
- label tape
- label
- suction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
- B65C9/00—Details of labelling machines or apparatus
- B65C9/08—Label feeding
- B65C9/18—Label feeding from strips, e.g. from rolls
- B65C9/1803—Label feeding from strips, e.g. from rolls the labels being cut from a strip
- B65C9/1815—Label feeding from strips, e.g. from rolls the labels being cut from a strip and transferred by suction means
- B65C9/1819—Label feeding from strips, e.g. from rolls the labels being cut from a strip and transferred by suction means the suction means being a vacuum drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
- B65C9/00—Details of labelling machines or apparatus
- B65C2009/0081—Means for forming a label web buffer, e.g. label web loop
Definitions
- the present invention relates to a labeling station for a labeling machine for labeling containers, in particular beverage containers, with an application carousel for applying labels to the containers and with a feed device for feeding the labels to the application carousel, the feed device having at least one label drive for driving a label tape and a cutting device for separating individual labels from the label tape and wherein the label tape is movable within the feed device along a feed path.
- the invention relates in particular to labeling stations for labeling machines which are used in the beverage industry, so that the beverage containers are then preferably beverage bottles made of glass or plastic.
- the beverage bottles are made of plastic, it is in particular a thermoplastic, in particular polyethylene terephthalate (PET), so that the beverage bottles can be formed in a simple manner by a so-called stretch blow molding process.
- PET polyethylene terephthalate
- the stretch blow molding machines required for this are usually part of a filling system, so that the beverage bottles are first formed from preforms (so-called preforms) in the course of stretch blow molding and then filled. A labeling machine can then be provided.
- the invention relates to so-called roll-fed labelers.
- the labels are provided in the form of a label tape. Accordingly, the labels are not isolated. Rather, a large number of labels are arranged one behind the other in the form of an endless band, with the labels being separated from the label band in a cutting device before being applied to the containers.
- applying one can also be done Pressure-sensitive adhesive can be applied to the labels if the label tape does not yet have any pressure-sensitive adhesive. The labels are then applied to the containers.
- occupancy sensors are often provided which detect a free container receptacle in the transport carousel, in which case the label drive is stopped for a short period of time so that no label is fed during the movement of the free container receptacle past the application carousel.
- This stopping and restarting of the label drive takes place in a very short period of time, which is in the range of a few milliseconds.
- stopping leads to the label tape being conveyed further and losing its tension precisely due to the inertia of all moving masses in the label run and in particular due to the inertia of the supply roll holder, so that the label can fall down within the feed device.
- the label tape can be disturbed to such an extent that this leads to various problems depending on the label material. If the label tape is made of a plastic film, the abrupt restart leads to an elongation of the label tape and thus, under certain circumstances, to incorrect positioning of the labels on the containers. If the label tape is made of paper, the abrupt braking and starting can cause the label tape to tear.
- the invention is based on the object of specifying a labeling station which enables the label drive to be stopped and started quickly while at the same time treating the label tape gently.
- the subject of the invention is a labeling station.
- the feed device has a suction device with a suction space, the suction space extending along a section of the feed path.
- the suction space forms an area into which the excess material of the label tape can be guided in when the label drive is switched off, this being done by the continuously applied negative pressure.
- the special feature here is that the suppression does not have to be particularly large so that the excess material can be fed in. The result of this is that when the label drive is restarted, the label tape can be guided out of the suction space in a simple manner and without great forces, although the forces are not sufficient to adversely affect the endless tape in any way.
- the switching of the label drive can be reacted particularly quickly because, as already explained above, the negative pressure is applied continuously and the label tape is therefore continuously sucked in.
- the label tape In a normal operating state, the label tape is at an opening in the suction space passed, whereby the forces caused by the suppression are not sufficient to suck in the label tape.
- the negative pressure acts on the label tape in such a way that the excess material is sucked in.
- the invention takes advantage of the advantage that the label tape is often made of a relatively light and thin material and is therefore particularly flexible in a direction transverse to the feed path.
- a buffered length by which the label tape would slacken if it were not sucked into the suction space to maintain a certain tightness is between 1 cm and 4 cm, in particular between 2 cm and 3 cm long.
- the feed device has a label drive, the suction device being arranged along the feed path in front of, in particular immediately in front of, the label drive.
- the label tape is moved by the feed device, whereby when the label drive stops, the largest accumulation of material occurs directly in front of the label drive due to the inertia of the moving masses.
- the arrangement of the suction device in front of the label drive is particularly advantageous, since the excess material can then be picked up directly where it arises.
- the terms “before” and “behind” refer to the operational direction of movement of the label tape along the feed path.
- a preferred embodiment of the invention further provides that the label drive is arranged between the cutting device and the suction device. Thus, stopping the label tape also interrupts the feed into the cutting device.
- a vacuum device is understood to mean a device which can generate a negative pressure relative to the environment in the labeling station.
- the vacuum device is at least one fan, which in a driven state removes the ambient air from the Pulls out the intake chamber.
- several fans can also be provided, with the number of fans being based in particular on the power required to generate the negative pressure in the intake space. In practice it has been shown that the use of three fans in particular is particularly useful.
- the vacuum device can then be formed directly on the suction device and interact with the suction space in such a way that the suction space has a negative pressure relative to the environment in the labeling station.
- a particularly preferred embodiment of the invention provides that an opening of the suction chamber assigned to the feed path is designed to be adjustable. This makes it possible to adjust the opening to the size of the label tape. This allows the opening to be limited to a size that is just sufficient for the label tape to enter the suction space. At the same time, the negative pressure in the suction chamber can have a particularly effective effect on the label tape. If, for example, the opening is made significantly larger than the height of the label tape, a large part of the ambient air from the labeling station would reach the suction space and thereby reduce the effectiveness of the suction device.
- a lower edge and/or an upper edge of the opening of the suction chamber are adjustable.
- the lower edge or the lower boundary of the suction space does not change when the format is changed, so this lower edge is adjusted before the label machine is put into operation for the first time.
- the lower edge will need to be realigned over time.
- the size of the opening in relation to the height of the label tape can be adjusted using the upper edge alone. This can be done, for example, when changing formats by manual adjustment, e.g. using a hand lever or a handwheel.
- a particularly preferred embodiment is in which the upper edge can be adjusted via a servomotor connected to a control unit.
- a servomotor connected to a control unit.
- Control unit is sent to the servomotor so that an automatic changeover takes place in the suction device.
- the servomotor is in particular an electric motor, for example an electric spindle motor, in which case the electric motor acts on a spindle, which causes an adjustment of the upper edge in relation to the label height by rotation.
- the feed device has at least one supply roll holder for receiving the label tape wound into a supply roll and a web tensioning device arranged behind the supply roll holder.
- This web tensioning device makes it possible to ensure uniform web tension regardless of the operation of the labeling station.
- the web tensioning device can be designed like a pulley and cause the label tape to be deflected several times. By adjusting the distance between the rollers, the feed path can then be increased or reduced depending on the operating point in order to ensure uniform web tension. In contrast to the suction device, however, this web tensioning device is significantly slower and therefore cannot compensate for the short-term fluctuations during the aforementioned starting and stopping.
- the application carousel is preferably designed as a rotatably mounted vacuum drum. Accordingly, the labels are held on the application carousel by pressure.
- the feed device can also have a gluing device for applying a pressure-sensitive adhesive.
- the gluing device is preferably designed as a rotatably mounted glue roller.
- the invention furthermore relates to a labeling machine with a transport carousel for moving the containers along a transport route and at least one labeling station according to the invention, the transport carousel directly adjoining the application carousel of the labeling station. Accordingly, the movement of the containers is effected via the transport carousel and the moving labels or label tape via the labeling station.
- the transport carousel and the application carousel are arranged at a distance from one another, which enables the labels to be attached to the container.
- the container receptacles of the transport carousel are preferably designed to be rotatable, so that the containers rotate not only due to the rotation of the container carousel, but also about their container axis. This allows the label to be applied and pressed particularly well onto the containers.
- the invention further relates to a container treatment system, comprising a blow molding machine for blowing, in particular for stretch blow molding, containers made of plastic preforms and a labeling machine according to the invention, which is blocked with the blow molding machine, for labeling the containers.
- the container treatment system has a central control which is set up to control the label drive and the suction device depending on the operation of the blow molding machine in such a way that if a container flow from the blow molding machine to the labeling machine is interrupted, a supply of labels to the application carousel of the labeling station is interrupted and the label tape is held at a predetermined tension by means of the suction device.
- blocking means that no transport devices are provided between the individual machines that can form a container buffer. Instead, the machines are preferably connected to one another via transport stars, in particular exclusively via transport stars.
- the invention also relates to a method for labeling containers in a labeling machine according to the invention, wherein the containers are fed to the transport carousel and transported along the transport direction and wherein a label strip moves individual labels along a feed path separated from the label tape and applied to the containers via the application carousel.
- the labels can also be glued with a pressure-sensitive adhesive, provided that the label tape itself is designed without pressure-sensitive adhesive.
- the label tape is continuously subjected to a negative pressure along a section of the feed path via the suction device.
- the label tape particularly preferably rests in sections in the suction space of the suction device.
- the containers are first formed from plastic preforms in a blow molding machine by blowing, in particular by stretch blow molding, and then fed to the labeling machine interlocked with the blow molding machine.
- Figure 2 shows the suction device in an isometric view
- Figure 5 shows a suction device according to Figure 3 with a sucked label tape.
- Figure 1 shows a labeling machine with a labeling station 1 designed as a roll-fed labeling station, which is directly connected to a transport carousel 2, shown only schematically, for transporting containers 3.
- Labels are applied to the containers 3 via the labeling station 1, with the labels initially being provided in the form of a label tape 4, which are stored in supply roll holders 5 in the form of wound supply rolls 6.
- the label tape 4 is unwound and at the same time fed to a web tensioning device 7, which causes uniform web tension within the label tape 4 by moving the guide rollers towards one another.
- a label drive 8 also causes a movement of the label tape 4 through a feed device 9 of the labeling station 1, whereby the label tape 4 can be cut into individual labels in a cutting device 10, provided with a pressure-sensitive adhesive via a gluing device 11 and over an application carousel 12 can be applied to the containers 3.
- the containers 3 roll around their own container axis within the transport carousel 2, whereby the labels can be applied particularly advantageously to the outer surface of the containers 3.
- an occupancy sensor (not shown) detects the empty container holder and reports this to a control unit, also not shown.
- the label drive 8 is then stopped to prevent a label from being fed to the empty container holder.
- this then leads to material from the label tape 4 being able to build up, particularly immediately in front of the label drive 8, which falls down due to its own weight when it comes to a standstill due to the lack of web tension.
- the web tensioning device 7 is not sufficient to prevent the accumulation of the excess material of the label tape 4.
- a suction device 13 is provided, which is shown in more detail in Figures 2 to 4.
- FIG. 2 shows the suction device 13 in a rear view, with a vacuum device 14 formed from three fans generating a negative pressure in a suction chamber 15. This suction space extends parallel to the label tape 4.
- the suction device 13 also has an opening 16, with the label tape 4 running past the opening 15 in an operating state. This is particularly clear from Figure 3.
- the opening 16 and thus also the suction space 15 extend over a section of the feed path Z, so that in the event of a standstill of the drive device 8, the label material 4 can engage in sections with the excess material in the suction space 16, this being due to the negative pressure in the suction space 15 is effected.
- the forces for sucking the label tape 4 are comparatively low due to the lightness of the material, so that the label tape 4 can be easily guided out of the suction space 15 even when operation is resumed.
- the height of the opening 16 is adapted to the height of the label tape 4. Accordingly, a lower edge 17 and an upper edge 18 are provided, which can be adjusted separately from one another.
- a manual adjustment mechanism is provided for adjusting the lower edge 17, since usually no or only rarely adjustment of the lower edge 17 is necessary after initial commissioning.
- the setting is chosen so that the label tape 4 can rest on a lower surface of the suction chamber 15, which also forms the lower edge 17, in the event of a standstill of the label drive 8 without being lowered significantly.
- the height of the opening 16 is then largely adjusted via the upper edge 18, with a servomotor 19 being provided for adjusting the upper edge 18.
- This servomotor 19 is connected to the previously mentioned control unit, whereby in the event of a format change, the upper edge 18 and thus also the opening 16 can be adjusted automatically.
- the actuator 19 is preferably formed from a spindle drive driven by an electric motor, with an electric motor driving a spindle, which causes a movement in the vertical direction V.
- indent E1 is relatively small; indents E1 of less than 10 cm, preferably less than 8 cm, are provided.
- a distance L1 which can be buffered on the label tape 4, is correspondingly small. With a number of 30,000 to 70,000 containers 3 per hour, the buffered distance L1 is 1 cm to 4 cm, and at the lower end of 30,000 containers per hour it is only 2 cm to 3 cm.
Landscapes
- Labeling Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022122956.4A DE102022122956A1 (de) | 2022-09-09 | 2022-09-09 | Etikettierstation für eine Etikettiermaschine zum Etikettieren von Behältern |
| PCT/EP2023/074233 WO2024052304A1 (de) | 2022-09-09 | 2023-09-05 | Etikettierstation für eine etikettiermaschine zum etikettieren von behältern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4584165A1 true EP4584165A1 (de) | 2025-07-16 |
Family
ID=88018089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23768489.9A Pending EP4584165A1 (de) | 2022-09-09 | 2023-09-05 | Etikettierstation für eine etikettiermaschine zum etikettieren von behältern |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4584165A1 (de) |
| DE (1) | DE102022122956A1 (de) |
| WO (1) | WO2024052304A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMN20070043A1 (it) * | 2007-11-30 | 2009-06-01 | Pe Labellers Spa | Macchina etichettatrice per etichette stampate su film continuo. |
| IT1401117B1 (it) * | 2010-07-14 | 2013-07-12 | Ilti S R L | Tamburo di taglio e trasferimento di etichette linerless da un nastro continuo ad un contenitore in movimento e apparecchiatura dotata di tale tamburo. |
| ITVR20110081A1 (it) * | 2011-04-28 | 2012-10-29 | Pe Labellers Spa | Macchina etichettatrice a giostra per etichette preadesivizzate su nastro |
| ITVR20130193A1 (it) * | 2013-08-08 | 2015-02-09 | Pe Labellers Spa | Dispositivo di applicazione attorno a gruppi di due o piu' contenitori di un nastro dotato su una superficie di colla senza soluzione di continuita'. |
| DE102014105485A1 (de) * | 2014-04-17 | 2015-10-22 | Krones Ag | Vorrichtung und Verfahren zum Ausstatten von Behältern mit beleimten Etiketten |
| DE102015105352A1 (de) * | 2015-04-09 | 2016-10-13 | Krones Ag | Vorrichtung zum Variieren des Volumenstroms eines Füllprodukts in einer Abfüllanlage |
| PL3882169T3 (pl) * | 2020-03-19 | 2024-09-16 | Ilti S.R.L. | Sposób i urządzenie do podawania etykiet bez podkładu do jednostki etykietującej |
-
2022
- 2022-09-09 DE DE102022122956.4A patent/DE102022122956A1/de active Pending
-
2023
- 2023-09-05 EP EP23768489.9A patent/EP4584165A1/de active Pending
- 2023-09-05 WO PCT/EP2023/074233 patent/WO2024052304A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022122956A1 (de) | 2024-03-14 |
| WO2024052304A1 (de) | 2024-03-14 |
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