EP3317189A1 - Dispositif et procédé pour étiqueter des récipients - Google Patents

Dispositif et procédé pour étiqueter des récipients

Info

Publication number
EP3317189A1
EP3317189A1 EP16716031.6A EP16716031A EP3317189A1 EP 3317189 A1 EP3317189 A1 EP 3317189A1 EP 16716031 A EP16716031 A EP 16716031A EP 3317189 A1 EP3317189 A1 EP 3317189A1
Authority
EP
European Patent Office
Prior art keywords
glue
label
pallet
labels
vacuum
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.)
Granted
Application number
EP16716031.6A
Other languages
German (de)
English (en)
Other versions
EP3317189B1 (fr
Inventor
Volker Kronseder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Krones AG
Original Assignee
Krones AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Krones AG filed Critical Krones AG
Publication of EP3317189A1 publication Critical patent/EP3317189A1/fr
Application granted granted Critical
Publication of EP3317189B1 publication Critical patent/EP3317189B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B65C9/20—Gluing the labels or articles
    • B65C9/22—Gluing the labels or articles by wetting, e.g. by applying liquid glue or a liquid to a dry glue coating
    • B65C9/2204—Gluing the labels or articles by wetting, e.g. by applying liquid glue or a liquid to a dry glue coating using spraying means
    • B65C9/2213—Applying the liquid on the label
    • B65C9/2217—Applying the liquid on the label discretely, i.e. several points or strips or interrupted films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C13/00—Means for manipulating or holding work, e.g. for separate articles
    • B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0208—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles
    • B05C5/0212—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/10—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an adhesive surface
    • 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
    • B65C9/12—Removing separate labels from stacks
    • B65C9/14—Removing separate labels from stacks by vacuum
    • 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
    • B65C9/0015—Preparing the labels or articles, e.g. smoothing, removing air bubbles
    • B65C2009/0059—Preparing the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/42—Separating articles from piles by two or more separators mounted for movement with, or relative to, rotary or oscillating bodies

Definitions

  • the present invention relates to a device and a method for assembling and applying labels of different shape and size to containers or containers.
  • Labeling machines are used in the industry to continuously apply high performance labels to continuously fed articles, containers of containers.
  • the containers may be glass bottles, plastic bottles, in particular PET bottles, cans or can-like containers or the like, which are filled with liquid or solid foods, medical or cosmetic products, hygiene products or the like.
  • the labeling machines generally comprise an often modular designed labeling.
  • Such labeling units for labeling machines especially for labeling machines of rotating design, for labeling bottles or similar containers with labels, especially those made of paper, using cold glue are known in the art.
  • such units comprise at least one pallet or glue segment carrier which can be driven circumferentially about a vertical axis of the unit, also referred to as a pallet carousel, on which several label pallets or glue segments forming at least one label receiver or contact surface are provided.
  • the pallets or glue segments are each controlled pivotable about a separate pivot axis.
  • the pallets or glue segments are first moved past a gluing station to produce a glue application on their label contact surface and then to a label dispensing station each time the glue segment carrier is circulated, with one label each being then transferred with its back to a label contact surface provided with the glue application adheres and thereby glued on its back at the same time.
  • a gripper cylinder the glued labels are each passed to the container moved past the labeling.
  • the glueing of the glue segments or their label contact surfaces takes place at the gluing station of conventional labeling units via a peripherally driven glue roller whose circular cylindrical surface is provided by means of a glue application strip with a glue film.
  • glue rollers are structurally complex and expensive. Furthermore, they are subject to high wear and also cause considerable contamination of the labeling and the labeling machine by splashing glue.
  • a labeling unit for use in labeling machines for labeling bottles or similar containers with labels using cold glue with at least one circumferentially driven about an aggregate axis and at the same time to a radially offset with respect to the aggregate axis pivot axis controlled and a label contact surface forming glue segment described.
  • a Beleimungsstation and at least one Etikettenabgabestation for dispensing the labels are provided to each past moving label contact surface, the Beleimungsstation at least one Glimarguessdüse on the trajectory of the label contact surface of at least one glue segment for direct application of the glue on each Having moved past label contact surface.
  • the labels are taken over as usual from the glued label contact surface and glued. Subsequently, the glued labels are transferred to a gripper cylinder, which transfers them to the bottles.
  • a disadvantage of the labeling unit described is the fact that the glue is applied to the pallet and then the removal of the labels with the glued pallets from the label container and it can thus come as known to a Leimverschleppung or pollution.
  • the use of the gripper cylinder leads to a complex construction, which is also maintenance-prone.
  • no full-surface gluing to the edge of the label with the described labeling is possible. This may cause the label to stick to the bottle after the labeling process.
  • the glue is exposed to the ambient air after application to the pallet and in the required Leim Weglauf, which can change its properties.
  • the present invention is therefore based on the object of demonstrating a labeling unit for labeling containers or containers with labels using glue, in particular cold glue, which avoids the disadvantages described and in particular manages without gripper cylinder.
  • glue in particular cold glue
  • the object of the present invention is reasons to reduce the installation and maintenance of the labeling and save costs.
  • labels of any shape should be safely processed.
  • the containers may be cans, glass bottles, plastic bottles or the like.
  • the labels to be applied may be wrap-around labels or front and back labels.
  • breast and hull labels can be used for bottles.
  • the labels can be made of paper, plastic film or the like.
  • the labels generally do not carry any pre-gluing, for example in the form of an activatable adhesive, nor are the labels self-adhesive. Rather, according to the above method, the labels are applied by applying cold glue to their glue application surface for application, i. H. Sticking to the container to be labeled prepared.
  • a label generally has an image page on which the information to be presented is displayed and a back side.
  • the glue application surface of the label can in this case cover the entire surface of the label back or only part of it.
  • the glue application surface does not necessarily have to be contiguous, but can be formed, for example, by separate surfaces for initial and final gluing of a label. Also complex Beleimungsmuster or arrangements of glue application surfaces are conceivable, as described below.
  • glue in particular cold glue
  • the glue used may be thin-bodied glues, glues having a viscosity between 600 and 80,000 mPa s and casein or dispersion glues having an optimum processing temperature between 18 ° C and 40 ° C.
  • hot glue can also be applied in partial regions of the glue application surface of the label, the glue printer being designed accordingly, for example by providing a heating device. Under a glue pattern is here and below to understand a Beleimungsmuster, which is applied to the glue application surface.
  • the gluing pattern can consist of any two-dimensional distribution of glue dots, glue lines and / or glue surfaces.
  • the gluing of the labels does not have to be mandatory when using cold glue made flat, since applied to the glue application surface glue spots or glue lines are spread by pressing the label to the container surface and can merge together in this way. Also, only portions of the glue application surface, such as a marginal area or a starting and ending area, may be provided with glue to achieve sufficient retention of the label on the container surface.
  • the size printer can have one or more controllable glue nozzles, by means of which the glue is sprayed dropwise or as a continuous jet under pressure onto the glue application surface.
  • the control of the glue printer may include the control of the one or more glue nozzles with respect to the leakage of glue and / or the orientation of the glue nozzles or of the entire glue printer.
  • the glue application can also take place, for example, in the single-jet process by two-dimensional movement of the glue nozzle and / or of the label relative to one another. Control of the size printer may thus include control of the glue nozzles and control of that movement. The same applies, of course, when using a multi-beam glue printer.
  • the glue printer can also apply the glue pattern to the glue application surface, in particular by the ink jet method. Both a job with a continuous stream and the DoD principle (drop on demand) are possible. According to the glue is applied directly to the glue application surface of the label and thus in particular not via a glue segment as described in the prior art. This facilitates the one hand, the control of the glue application, especially for irregular shaped labels such. As sparkling or irregular glue images, since the direct job on the label via a controllable glue printer can be done much more precise than the preparatory order on the surface of a glue segment to which the glue application side of the label to be glued is then placed accordingly precise.
  • the otherwise required turning of the label in a position with exposed side of glue as is usually done by means of a gripper cylinder omitted, since the glue side is already exposed due to the direct glue application.
  • exposures on the glue pattern, as they result, for example, by gripper fingers of the gripper cylinder can be avoided, whereby a secure adherence of the label to the container can be guaranteed.
  • the labels can be glued to the edge of the label, which is particularly advantageous in champagne loops or breast labels.
  • the glue application by means of a controllable glue printer also significantly reduces the cleaning effort.
  • the method may further comprise individually or group-wise driving a plurality of glue nozzles of the glue printer in such a way that a desired glue pattern is applied to the glue application surface of the label.
  • the glue nozzles can work in particular according to the ink-jet principle, whereby one or more rows of glue nozzles oriented perpendicular to the direction of movement of the glue application surface are selectively activated in order to achieve a desired glue pattern, ie a desired dosage and distribution of the applied glue on the glue application surface.
  • the control of the glue nozzles can be carried out analogously to the control of the inkjet nozzles of an inkjet printer by means of a suitable control and / or regulating unit.
  • the glue application can be adapted to the shape and size of the label, so that no glue outside of the label is applied to the labels transporting pallets, which would lead to pollution of the same. Due to the controlled dosage beyond that can be completely dispensed with the otherwise usual Leim Weglauf.
  • the application of glue according to the inkjet principle also causes the glue is not exposed to unnecessary influences by the ambient air, in particular by the oxygen contained therein, so that the glue properties are not changed.
  • the job can be done without contact by the distance between the glue nozzle and the label is chosen large enough that glue drops from the nozzle opening can peel off like a jet.
  • the distance depending on the consistency of the glue used, be selected between 1 mm and 2.5 mm.
  • a smaller distance can be chosen so that the glue is applied in the contact process, wherein the non-vanishing distance between the nozzle opening and the label is small enough that it is completely bridged by a glue drop.
  • the glue nozzles may be formed, for example, as channel nozzles.
  • the applied glue pattern can be varied almost arbitrarily within the scope of the expansion of the nozzle field.
  • a wide variety of label sizes and formats, even complex ones, such as sparkling wine, can be processed.
  • non-contiguous glue images for example, with separate initial and final gluing for hull labels, are readily possible.
  • the glue printer may have separate, in particular heatable, glue nozzles for this purpose.
  • a heatable valve can be arranged in front of the glue nozzle.
  • the glue images belonging to specific label formats can be stored in the manner of a variety management in a memory unit of the control and / or regulating unit, in particular a programmable logic controller, from where they are processed by a processor unit of the control and / or regulating unit for controlling the Glue nozzles are read out.
  • a processor unit of the control and / or regulating unit for controlling the Glue nozzles are read out.
  • the labeling process can be quickly and flexibly changed to another label format.
  • the method may further comprise passing the glue application surface to be printed on a multiplicity of glue outlet openings of the glue printer by means of a controllably pivotable pallet, the glue application surface facing away from the pallet.
  • Label pallets are known in principle in the prior art.
  • US Pat. No. 3,736,213 describes a so-called pallet carousel with a multiplicity of pallets which can be driven peripherally around an axis of rotation of the carousel for accepting labels from a label storage container and transporting the accepted labels.
  • the pallets are each designed to be pivotable and / or rotatable about their own pivot axis offset radially to the axis of rotation. By controlled pivoting or rotating the pallets their respective curved contact surface is brought into contact with the label to be accepted.
  • the adhesion of the glue applied to the contact surface of the pallet causes a single label to be removed from the label box and transported by the pallet.
  • this glue application is eliminated on the pallet.
  • adhesion of the label to be transferred can be effected.
  • the contact surface of the pallet may for example be coated with a material having sufficient adhesive properties or suitable gripping elements, as in the case of a gripper cylinder.
  • a particularly elegant variant results from the configuration of the pallets described below as vacuum pallets.
  • the pallets may be mounted eccentrically on their pivot axes in such a way that the curved contact surface of the pallet rolls on a flat surface optimally, ie without slippage, as is the case, for example, with a label box or a linear conveyor ,
  • a container table By increasing the eccentricity of the storage, however, an optimal rolling on a curved surface can be realized, as is the case for example when transporting the container by means of a container table.
  • the eccentricity of the storage of the pallet on the pivot axis can also be changed if necessary, for example via a controllable linear actuator.
  • the eccentricity in the area of the label box may be lower than when the labels are transferred to the containers guided on a curved path from a container table, wherein a control and / or regulating unit of the labeling machine changes the eccentricity of the storage of the pallet in dependence on a position controls the palette along the circuit.
  • the eccentricity through one or more cams of the pallet carousel possibly in cooperation with a restoring acting spring device for storage, be changed automatically when circulating the pallets about the axis of rotation of the carousel.
  • the cams can thereby simultaneously cause the pivoting of the pallets.
  • the pivoting movement or rotation of the pallets can take place by means of one or more servomotors.
  • the controller takes over a suitable control and / or regulating unit of the labeling machine.
  • the label taken over and conveyed by the pallet is transported past its glue application surface past the glue outlet openings of the glue printer, the glue application surface of the label being at least partially provided with cold glue.
  • the glue application takes place directly and without intermediate step on the back of the label.
  • the label is attached to the pallet in such a way that its image side points towards the pallet and thus its glue application surface faces away from the pallet.
  • the movement of the label can preferably take place perpendicular to an alignment of the previously mentioned rows of glue nozzles or glue outlet openings.
  • a single row of glue nozzles oriented perpendicular to the direction of movement is sufficient to produce a two-dimensional glue pattern on the glue application surface.
  • the glue outlet openings may be provided as openings of the glue nozzles or as openings of glue channels. In the case of the latter, the gluing can take place in quasi-contact, i. H. The distance between glue outlet openings and glue application surface is so small that it is completely bridged by a glue drop. As a result, no glue drops can be removed from the glue outlet openings, so that contamination by glue spatter can be avoided.
  • the pivoting movement of the pallet can be controlled such that the glue application surface to be printed is guided past the glue outlet openings of the glue printer at a constant distance, in particular between 1 mm and 2.5 mm.
  • a constant distance can be made possible by eccentric mounting of the pallet on the pivot axis.
  • a constant distance during the printing process causes the glue image to be applied with constant resolution and the glue with constant dosage per surface element.
  • the amount of glue used can be minimized.
  • the fact that the glue application takes place without contact can also prevent the adhering to the pallet label on this slip.
  • the method may further comprise sucking the label by means of a plurality of suction openings in a contact surface of the pallet.
  • the method may include taking over the label from one of the label providing units described below and then transporting the label by means of the plurality of suction openings of the pallet by negative pressure, i. H. Aspiration, embrace.
  • the pallet is formed as a so-called vacuum pallet, which is supplied via a vacuum system with negative pressure.
  • Vacuum systems are well known in the art and therefore will not be described in detail here.
  • the vacuum system may include a controllable vacuum pump and a plurality of vacuum lines connecting the vacuum pallets to the vacuum pump.
  • the vacuum supply can be designed such that the pallets are supplied to the takeover and transport of the label with negative pressure and are separated for transfer and when empty from the vacuum supply.
  • the suction openings can be distributed over the label contact surface in such a way, for example in the form of a matrix, that a multiplicity of different label formats can be taken over and conveyed by the vacuum pallet.
  • the contact surface of the pallet is guided past the image side of the label provided by the label supply unit for acceptance so that the image side is sucked in by the suction openings.
  • the suction can be brought either in mechanical contact with the label or at a small distance, for example less than or equal to 1 mm, are passed to the label.
  • the negative pressure can be selected in such a way that the label is held securely on the vacuum pallet and is not stripped off the vacuum pallet by the gluing process, even with contact gluing.
  • the suction openings can be activated or deactivated individually or in groups as a function of a size and / or shape of the label to be transported.
  • the intake ports may be provided, for example, individually or in groups with controllable control valves, for example piezoelectrically operated valves, which are controlled and opened by a control and / or regulating unit of the labeling machine.
  • controllable control valves for example piezoelectrically operated valves
  • the parameters relating to the size and / or shape can be stored in the control and / or regulating unit in the form of a variety management, so that a label change can be carried out quickly and flexibly.
  • the vacuum pallet is for this purpose formed with a size that can take and transport a variety of different label formats, such as torso and breast labels, label loops, wrap-around labels, front and back labels or the like.
  • the size of the vacuum pallet can be oriented to the extent of the wrap-around labels for the largest containers to be labeled.
  • the number of suction openings is also adjusted. By assuming a lesser flexibility, the suction openings can also be activated and deactivated in groups by supplying the corresponding groups with negative pressure, for example via a common control valve. This simplifies the control and saves installation costs.
  • the suction openings not covered by the accepted label can always be supplied with negative pressure, ie remain activated.
  • the pallet with a vacuum pad of a porous material, for. B. a plastic sintered material be formed, which is supplied with negative pressure.
  • this requires a higher vacuum performance of the vacuum system used.
  • the suction ports in the label abutting surface of the vacuum pallet may be distributed according to a likelihood of their use.
  • a particularly large number of openings can be provided in a region which will be occupied by the majority of label formats, while specific areas for special formats are equipped with a lower density of suction ports.
  • the size of the openings can be chosen according to this probability.
  • the main load of the suction power is generally borne by the frequently used intake ports.
  • the described vacuum pallets are particularly easy to use. In return, however, care must be taken that no glue is applied to the unoccupied part of the contact surface in order to avoid in particular clogging of the unoccupied suction openings.
  • the described method for applying a desired glue pattern in particular by the ink jet method, are used.
  • the method may further comprise dispensing the label by deactivating all the suction openings of the pallet.
  • the deactivation of the suction openings can be effected as described above by individual or group-wise separation of the suction openings from the vacuum supply, for example by means of individually controllable control valves.
  • the entire vacuum pallet can be separated from the vacuum supply for transferring the glued label, for example by interrupting the supply of the pallet vacuum line.
  • the pallet for transferring the label can be acted upon with compressed air.
  • the already existing suction openings can be connected to a compressed air supply or specially provided holes in the contact surface of the pallet can be subjected to compressed air.
  • compressed air can be lifted by applying compressed air, a leading edge of the transported label from the contact surface and placed on the container to be labeled.
  • the label is then completely unrolled onto the container surface.
  • the relative movement of the container and the pallet assist in relation to this rolling process.
  • the labeling process can be simplified on the one hand and cost-effective on the other hand.
  • the control of the pressurization can be done again by means of a control and / or regulating unit of the labeling.
  • the label glued by means of the glue printer can then be directly removed from the pallet, i. H. without the detour via a gripper cylinder, to be transferred to a container transported by a transport device or a container transported by the transport device.
  • the glued side of the label can be moved by pivoting or rotating the pallet so that a leading edge of the label is placed on the surface of the container or container to be labeled.
  • the label is removed from the pallet by controlled relative movement of the pallet and the container and unrolled onto the container.
  • the transport device can be designed as a container table, revolving carriage / rail system or the like with a multiplicity of rotatable holders, for example in the form of turntables, for the containers or containers. Controlled rotation of the turntables when transferring the labels to the containers or containers rolls the labels onto the surface of the containers or containers.
  • the trajectory of the containers in the region of the label transfer may be circularly curved, as in the case of a carousel-like container table, or straight, as in the case of a long-stator linear motor drive or belt drive for the holders.
  • the brackets can be provided with individually controllable drive units, for example in the form of servomotors.
  • the brackets can be controlled to rotate to perform predetermined operations of a rotary movement for taking over and winding the labels on the container.
  • the transport device can comprise further elements known per se in the prior art, such as a container feed, for example in the form of an inlet star, a container discharge, for example in the form of an outlet star, a dividing screw or the like.
  • the glue application can be made by the glue printer directly on the glue application side of the labels, without detouring the pallet or a corresponding glue segment of a glue carrier.
  • the glued labels are now transported with external gluing of the pallets so that they can be applied directly from the pallet carousel to the container to be labeled.
  • the entire labeling can be simplified and made more compact.
  • there is no maintenance and cleaning work for the gripper cylinder so that the service life of the unit can be extended.
  • the method may further comprise transferring the label from a label supply unit, in particular by sucking the image side of the label against a contact surface of the pallet.
  • the label delivery unit may be one or more of the prior art label boxes which each receive a plurality of pre-cut labels and provide them on their front side for removal by a pallet.
  • the labels in the label boxes are arranged in such a way that the labels with their image page on which the information to be displayed is reproduced are provided on the front side of the label box.
  • the takeover of the label with a pallet which is guided past with its label contact surface on the front side of the label box, takes place in such a way that the image side of the accepted label to the contact surface, d. H. towards the pallet, while the provided on the back of the label glue application surface of the label facing away from the pallet.
  • the glue application surface is exposed during transport of the label through the pallet so that it can be provided with glue by the glue printer.
  • the label supply unit can comprise a storage unit for one or more label tape rolls, a feed device for feeding the label tape and a cutting device for separating individual labels from the label tape.
  • the separation can be effected for example by means of a rotating perforation or cutting roller in engagement with the lateral surface of a counter-cutting cylinder, wherein the label tape is guided between the roller and the counter-cutting cylinder.
  • the labels can be torn off the belt by increased conveying speed.
  • the separated labels can then be transferred to the pallet via a vacuum roller.
  • the method may further include supplying the size printer with cold glue by controlled deformation of a deformable glue reservoir.
  • the glue reservoir is at least partially formed from a material deformable by means of a specially designed deformation device, for example a plastic, a metal sheet or a foil, which is deformed by mechanical action of a deformation element of the deformation device.
  • the reservoir can have a can shape with an opening for the glue, wherein a stamp-like deformation element pushes the bottom opposite the opening successively into the interior of the can.
  • the pressure of the glue in the storage container increases, as a result of which the glue is forced out of the container through the opening.
  • controlled advancement of the deformation element can be on the one hand control the amount of depressed glue and on the other hand, the pressure in the container, so that a bursting of the container walls can be avoided.
  • Other possible forms for storage containers are tubes, syringes, spheres and the like, wherein corresponding punch or roller-shaped deformation elements can be used.
  • suitable design of the reservoir and the deformation element a complete removal of the glue contained in the reservoir can be made possible.
  • the opening of the particular replaceable reservoir can be connected for example via a screw with a corresponding connection of the labeling, from where the glue can be delivered via glue lines to the glue printer, in particular to the glue nozzles or glue channels.
  • the pressure built up by the deformation can be used at least partially for the operation of the glue nozzles, so that an additional glue pump can be dispensed with. If higher glue pressures are required, an additional glue pump or pressure booster pump with a possible medium pressure of 30 to 90 bar can be provided. Also conceivable is the additional use of a speed mixer or twin-screw extruder, which deaerates and mixes the glue again.
  • the glue reservoir can, as mentioned exchangeable, for example, with a screw cap, are formed. This allows the container to be easily replaced after emptying and recycled. Moreover, by deforming, the evacuated container is generally compacted, thereby minimizing storage and transportation costs. By deliberately pushing out the respectively required amount of glue from the reservoir can also be completely dispensed with a Leim Weglauf.
  • the storage container and the glue lines or alternatively a cabinet-like enclosure of the storage container and the deformation device can be cooled or heated as needed. For this purpose, appropriate cooling or heating devices may be provided, which may be designed in particular adjustable.
  • the device can be designed in particular with the device features described below.
  • a device for preparing labels for application to containers comprising a conveyor for labels and a controllable size printer, wherein the conveyor and the glue printer are formed such that cold glue in a variable glue pattern by means of the glue printer can be applied directly to a Leim Publisheds Stret.
  • the conveyor can be designed such that labels of different sizes and formats can be promoted by her along a predetermined path, that the glue application surface on the back of the transported labels for direct application of glue are exposed by the arranged on the web glue printers.
  • a control and / or regulating unit can be provided which controls the transport of the labels by the conveyor and / or controls that a two-dimensional glue image, which is almost arbitrary, can be applied to the glue application surface.
  • the size printer can have a multiplicity of glue nozzles which can be controlled individually or in groups, in particular according to the principle of an inkjet head.
  • the size printer has a print head with a plurality of controllable glue nozzles or glue channels, which are arranged with respect to a movement path of the label transported by the conveyor, that the glue to be applied is sprayed onto the glue application surface when the label moves past.
  • the order can be made as a jet with peeling from the nozzle opening glue drops or in quasi-contact, in which the distance is less than the typical diameter of the glue drops.
  • the glue nozzles or glue channels may be arranged along one or more parallel rows aligned perpendicular to the path of movement of the label and tangent to the contact surface. In this case, adjacent rows may be shifted "vertically" to one another in order to increase the printing resolution of the size image, and the print head may also be pivotable about a vertical and / or horizontal axis in order to be able to set an optimum angle of incidence for the glue drops.
  • the glue nozzles or glue channels can, as described above, be activated and deactivated individually or in groups in order to be able to print a glue pattern adapted to the label format as the label moves past on its glue application surface.
  • the control can also take place here in the manner of a variety management by means of a control and / or regulating unit and corresponding glue images stored in a storage unit.
  • the glue printhead can operate on DoD technology (drop-on-demand) or with a continuous stream. In the latter case may be provided as mentioned a Leim Weglauf for the excess glue to Leimzumoltechnischtechnisch over which the printhead is supplied with glue, or to Leimvorrats employer. With the printheads described can produce almost any glue images.
  • the glue application can also be done without contact, so that the label does not slip on a pallet of the conveyor or is stripped from it.
  • a passage of the glue application surface to be glued can be realized at a desired speed and at a desired distance from the outlet openings of the glue nozzles or glue channels.
  • the conveyor for the labels can be designed in many different ways.
  • it may be formed as a vacuum roller or gripper cylinder, which is arranged between the already mentioned label providing unit and the transport device for the container as a transfer device for the labels.
  • the glue printer described can be arranged on the labels for glue application in this case.
  • the conveyor may comprise a plurality of circumferentially driven pallets for the labels, wherein the drive of the pallets may be realized by a long stator linear motor drive in the form of a rail / slide system or by belt drive.
  • the conveyor may comprise a pallet carousel with a plurality of circumferentially driven around a rotation axis pallets, in particular are pivotable about the axis of rotation radially offset pivot axes.
  • a pallet carousel is known in principle from US Pat. No. 3,736,213.
  • the pallets may be mounted eccentrically on their pivot axes, that the curved contact surface of the pallet optimally, that rolls without slippage on a flat surface, as formed for example by the image side of a label provided by a label box label.
  • a flat unrolling can also take place when the labels are transferred to linearly conveyed containers or to a container table which is operated in the clock mode and in which the container holder is only rotated but not moved further when it is transferred.
  • an eccentric bearing can be completely dispensed with.
  • the curved contact surfaces of the pallets are formed as circular segments of a cylinder.
  • the curvature of the contact surface can also vary along the contact surface in such a way that an optimal rolling behavior results even with centric mounting.
  • an eccentric bearing is generally more space-saving than a centric bearing, so that more pallets can be accommodated on a rotating around the axis pallet carrier.
  • the supports of the pallets can be formed on the pallet carrier in such a way that the eccentricity of the pivot axis can be changed during the revolution about the axis of rotation.
  • the storage can be changed, for example by means of a controllable linear actuator with respect to the contact surface.
  • the control of the linear actuator can be adjusted by means of the aforementioned control and / or regulating unit as a function of a position of the pallet along the circulation.
  • the eccentricity for example, when accepting a label from a label box may be less than when transferring the label to the guided on a container table container.
  • the change in the eccentricity of the bearing may alternatively be changed automatically by one or more control curves of the pallet carousel, possibly in cooperation with a restoring spring device for storage, when circulating the pallets about the axis of rotation of the carousel.
  • the cams can thereby simultaneously cause the pivoting of the pallets.
  • the pivoting movement or rotation of the pallets can take place by means of one or more servomotors.
  • the controller takes over a suitable control and / or regulating unit of the labeling machine.
  • a glue printer of the label preparation unit described below is arranged downstream of the pallet carousel in the direction of circulation.
  • a variable glue pattern can be printed on the glue application surface of the label guided past the outlet openings of the glue nozzles of the glue printer by the ink jet method.
  • the glue application takes place directly on the facing away from the pallet glue application surface of the transported labels. Since the glued side of the labels thus faces outward, the conveyor can be used simultaneously for direct application of the labels on the container or container to be labeled. Thus eliminating the usual gripper cylinder, whereby the entire system can be designed more compact and cheaper.
  • the device may further comprise a vacuum supply unit, in particular a vacuum pump, wherein each pallet is designed as a vacuum pallet with a plurality of suction openings on a contact surface of the pallet for the labels to be transported.
  • the suction openings can result from the natural porosity of a vacuum pad forming the contact surface, for example from a plastic sintered material.
  • the suction openings can be formed by bores in the contact surface of the pallet, which can be arranged in a matrix as described above.
  • the suction openings may also be distributed over the contact surface of the pallet according to a probability that they are needed for transport for a particular label format, so that more suction openings are provided where a high probability of a part of the label to be transported comes to rest.
  • the device may comprise other known per se elements of a vacuum system such as vacuum lines, which supply the suction openings continuously or controlled with negative pressure from the vacuum pump.
  • the vacuum pump can also be designed to be controllable.
  • the pallets When forming the pallets as vacuum pallets, direct mechanical contact between the pallet and the label provided by the aforementioned label supply unit can be dispensed with in that the suction force of the suction openings at short distances is sufficient to take over the labels from the label supply unit. This simplifies the control of the pallets, in particular their pivotal movement, and reduces the wear of the labeling machine.
  • the adhesion mediated by the suction openings allows the labels to be taken over by unlabeled pallets, so that the labels can be transported with the image side to the pallets. As a consequence of this can After gluing by the glue printer, the labels are applied directly to the containers, ie without gripper cylinders.
  • the pallet can, as already mentioned, be designed such that the intake openings can be supplied individually or in groups with negative pressure.
  • the device may comprise a control and / or regulating unit which is designed to control the vacuum supply of the suction openings and / or the activation of the glue nozzles in dependence on a shape and / or size of the labels.
  • the intake ports may have individual or in groups control valves in their vacuum supply lines, which may be formed, for example piezoelectric in miniaturization.
  • the suction can also be connected in groups, each with a closable by a control valve vacuum line.
  • the groups may preferably be defined depending on frequently used label formats.
  • a single vacuum pallet can thus be flexibly used to transport a variety of label formats.
  • the control valves can be provided as part of the control and / or regulating unit, which supplies the suction of the pallet targeted with negative pressure.
  • the aforementioned control valves can be connected via corresponding signal lines to the control and / or regulating unit, which opens or closes the valves as needed, depending on the processed label format.
  • Which valves are opened for a particular label format and which valves are to be closed can be stored in the manner of a variety management in a memory unit of the control and / or regulating unit and from a processor unit of the control and / or regulating unit to change to another label format be read out. This makes it particularly easy to carry out a product change.
  • suction openings are designed with valves in such a way that they are automatically connected to the vacuum supply in the case of mechanical contact with the label to be transferred.
  • This can be achieved, for example, by equipping the intake openings with individual feeler valves, which are opened by pressing a button.
  • the voltage applied to the sensing valve label surface is thus automatically exposed to the communicated through the associated suction vacuum and thereby adheres to the pallet.
  • the suction openings can be designed with or without a feeler valve in the form of suction cups in order to maximize the effect of the negative pressure.
  • the suction cups protrude, unlike the previously described holes, beyond a base area of the pallet, wherein the control as described can be done via control valves or Tastventile.
  • the vacuum pallets can also be designed in such a way that by inserting or inserting a set-up part, for example in the form of a hole template, a conversion to another label format can take place.
  • the fitting part blocks the access of the unneeded suction openings to the vacuum supply.
  • the vacuum pallets can be made sufficiently large to handle a variety of processed label formats can.
  • the vacuum supply of the vacuum pallet as a whole can be controlled in dependence on a position of the vacuum pallet along its orbit about the axis of rotation.
  • the vacuum supply for the entire pallet in the area of the label supply unit can be activated to take over a label and be deactivated again in the area of the transport device in order to transfer the label to the container to be labeled.
  • the vacuum supply unit may have one or more corresponding control valves in the supply lines of the pallets, which are controlled by the control and / or regulating unit.
  • a rotary distributor for the vacuum transfer to the pallets is also conceivable.
  • the labeling device may comprise a breaker, which is designed to interrupt the vacuum supply of the pallet when placing the label on the container or container.
  • This breaker may be designed as a mechanical element that blocks the supply of negative pressure in the area of the transfer of the label, or as part of the control and / or regulating unit, which ensures that the control valves of the pallet or supply line are closed to transfer the label.
  • the labeling can have a compressed air system, which is connected to the pallets via compressed air lines, that at least a portion of the intake or separately provided holes in the contact surface controlled by compressed air can be applied.
  • the control can also take place here via corresponding control valves and by means of the control and / or regulating unit.
  • the label can be particularly easily solved by the contact surface or the suction cups and placed on the container and pressed.
  • the glued labels can be applied by controlled pivoting of the pallets on the containers.
  • the pallets can additionally be tilted about a horizontal axis, wherein the tilt angle can be controlled in particular by means of a control cam of the conveyor.
  • the device can furthermore comprise a controllable deformation device for removing cold glue from a deformable storage container by deforming the storage container.
  • the deformation device can be formed as already described, in particular with regard to the deformation element, the connection to the supply line of the glue printer and the control of the deformation.
  • the storage containers used for the cold glue may be formed as described.
  • the device may comprise a transport device for the containers to be labeled.
  • the transport device can be designed as a container table, revolving carriage / rail system or the like with a plurality of rotatable holders, for example in the form of turntables, for the containers or containers.
  • the brackets can be circulated on a tray table in the form of a carousel on a circular path or linearly in the field of label transfer to the container or container, for example by means of a belt or chain drive, a conveyor belt or a longstator linear motor drive can be moved.
  • the brackets can be provided with individually controllable drive units, for example in the form of servomotors, with which they can be controlled to rotate to perform predetermined operations of a rotary movement for taking over and winding the labels on the container.
  • the brackets can hold the container from below, as in turntables, and / or clamp from above, such as. B. at centering.
  • the transport device can comprise further elements known per se in the prior art, such as a container feed, for example in the form of an inlet star, a container discharge, for example in the form of an outlet star, a dividing screw or the like.
  • the device may comprise a label providing unit, wherein the label providing unit may comprise one or more label boxes for providing individual labels.
  • the label supply unit may be formed with a storage unit for one or more label tape rolls, a feeder for feeding the label tape, and a cutter for separating individual labels from the label tape.
  • a rotating de perforating or cutting roller to be provided in engagement with the lateral surface of a counter-cutting cylinder, wherein the counter-cutting cylinder may be formed as a vacuum roller, where the isolated labels are held by means of negative pressure. From the vacuum roller or the label box labels can be taken from the at least one pallet.
  • the labels in the labels boxes or the label tape on the counter-cutting cylinder are aligned so that the labels are taken with their image side of the pallet, ie with their image page to a contact surface of the range out and accordingly with their glue application side of the range point.
  • the conveyor is thus arranged with respect to the label providing unit, that the pallets are passed tangentially to take over the labels with their contact surface on the label box or the vacuum roller. In this case, a mechanical contact between the pallet and label can be made to take over the labels or takeover by vacuum by passing the pallet at a small distance.
  • further elements may be arranged, such as a further vacuum roller or a gripper cylinder, which rotate to separate the labels of a perforated label strip at a higher speed than the counter-cutting cylinder.
  • the orientation of the label tape is adjusted accordingly in this case.
  • the described methods and devices allow a direct gluing of the backs of labels and the subsequent direct transfer of the labels to the containers to be labeled.
  • a glue printer as Beleimungshim also the maintenance-prone glue roller can be omitted.
  • any label size that can be transported with the pallet can be provided with any desired size image using such a glue printer.
  • By appropriately forming the vacuum pallet thus a variety of different label formats can be processed without retooling the labeling. In particular, no pallet change is required anymore.
  • the gripper cylinder is eliminated, the glue application can generally be up to the edge of the label, whereby a secure adherence of the label to the container surface can be guaranteed.
  • the glue is preferably applied directly to the glue application surface of the labels.
  • the special developments of the controllable glue printer can also be retrofitted to existing labeling, which apply the glue by means of glue roller on the contact surface of the pallets, to subsequently remove a label with the glue application side of the label container.
  • the glue roller is replaced by the above-described glue printer, the prescribed controllable deformation unit for supplying the glue printer can be used with cold glue.
  • the glue application to the contact surface must be precise, because after taking over the labels by the arranged in this case between the pallet carousel and transport device gripper cylinder still some glue adhering to the pallet.
  • existing labeling can be retrofitted in a simple manner by replacing the glue roller by a glue printer, the previously used Leim Weglauf can be completely eliminated.
  • Figure 1 shows schematically a plan view of a labeling apparatus according to the present invention.
  • FIG. 2 shows a variation of the labeling device of FIG. 1 for label tapes.
  • Figure 3 shows a cross-section through a schematic representation of an apparatus for removing cold glue by deformation of a storage container according to the present invention.
  • Figure 4a shows a side view of an exemplary vacuum pallet according to the present invention.
  • FIG. 4b shows a front view of the vacuum pallet of FIG. 4a.
  • Figure 5a shows a schematic cross section of an alternative embodiment of a vacuum pallet according to the present invention.
  • FIG. 5b shows a perspective view of the vacuum pallet of FIG. 5a.
  • Figure 6 shows schematic front views of a vacuum pallet and a glue nozzle array of a size printer according to the present invention.
  • Figures 7a-f show exemplary label formats and size images.
  • the same or similar elements are denoted by the same reference numerals. A repeated description of these elements is omitted for the sake of clarity.
  • some or all of the elements may be replaced or combined with similar elements described in connection with other embodiments.
  • Figure 1 shows a schematic representation of a labeling device according to the present invention in plan view.
  • the labeling device 100 comprises a transport device designed as a container table 1 14, along which the containers 1 13 or containers (not shown) to be labeled rotate on a curved path on a multiplicity of holders (not shown).
  • the non-limiting development shown also shows other frequently used elements of a labeling device.
  • a pretreatment unit 1 12 may be provided which prepares the container 1 13 to be labeled for labeling by cleaning the surface of the container to be labeled, pre-moistening or blasting, a heating and / or radiation and / or plasma and / or Corona treatment subjects.
  • sensors 109 and 110 may be provided which control the condition of the surface to be labeled, e.g. B. smooth, rough, etc., and / or environmental conditions, such. As an ambient temperature or humidity, measure and pass to control the labeling device to the control and / or regulating unit 140.
  • a roll-on unit 15 and / or a brushing unit 16 can be provided in the wake of the labeling position 118 in order to completely apply and press the label 120 placed on the container.
  • the containers provided with the label 1 17 are then transferred to a subsequent treatment station, for example, a filling station for filling with a liquid food.
  • the labeling device 100 comprises a conveyor 103 with at least one pallet 104 - 106.
  • the conveyor 103 is formed as a pallet carousel with a plurality of around a rotation axis of the pallet carousel pallets 104 - 106, which in turn pivotable about their own, eccentric mounted pivot axes 1 19 are formed.
  • the pallets have on their outward-facing side an abutment surface 123, which may be formed large enough that it can accommodate a variety of different label formats.
  • the pallet 104 which is initially unloaded, is guided past the axis of rotation of the pallet carousel 103 in the form of a label box during its rotation around the axis of rotation of the pallet carousel and pivoted so that the contact surface 123 of the pallet displays the foremost label 102 of FIG the label box 101 takes. Since the pallets 104 - 106 are designed as vacuum pallets, as described in greater detail below, this assumption is reliably possible even without prior gluing of the contact surface 123. In order to be able to adapt the distance of the foremost label 102 to the pallet carousel 103, the label box 101 can be designed to be switchable via a pneumatic cylinder 130.
  • FIG. 1 illustrates a gluing unit 124 according to the invention using the ink jet method.
  • the cold glue from a plurality of glue nozzles in the form of a glue jet 121 is sprayed directly onto the glue application surface 122.
  • the glue application surface 122 is preferably guided past the openings of the glue nozzles by circulating and pivoting the pallet 106 at a constant distance.
  • the glue nozzles for example according to the DoD principle (drop-on-demand)
  • an approximately arbitrary glue pattern can be imprinted on the glue application surface 122 in overlay with the pallet movement.
  • exactly the required amount of cold glue can be printed, so that can be completely dispensed with a Leim Weglauf.
  • the supply of glue to the size printer 108 via the glue supply line 128 can be controlled in the required amount by means of one of the controllable deformation devices described above. This is indicated in FIG. 1 for the gluing unit 124. An exemplary development of the deformation device 129 will be described below in connection with FIG.
  • the cold glue is applied to the outwardly facing glue application surface 122, unlike the prior art, no gripper cylinder is required for placing the now glued labels 107 onto the containers 1 13 to be labeled. Instead, the labels are placed directly from the pallets 104-106 onto the containers 13 guided past the labeling position 118 and wound onto them by rotational movement of the holders of the container table 114. For this purpose, the pallets are thus guided past the container surfaces and thereby pivoted that the entrained labels in combination with the rotational movement the container and its circulation are rolled around the container table on the container surfaces. As already mentioned, slip-free rolling of the labels onto the container surfaces can be achieved by suitably eccentric mounting of the curved pallets 104 - 106 on their respective pivot axes 1 19 so that the applied labels do not slip unintentionally.
  • the orbital movements of the pallets 104 - 106 and the holders of the container table 1 14 can be controlled by means of controllable drives (not shown) via the control and / or regulating unit 140 of the labeling device 100.
  • the rotational movement of the holders for the containers for example via individually provided servomotors, can be controlled and / or regulated by means of the control and / or regulating unit.
  • the pivoting movements of the pallets 104 - 106 can be controlled and / or regulated by means of the control and / or regulating unit via corresponding control cams or likewise via dedicated servomotors.
  • the vacuum supply and the glue nozzles may be controlled via the control and / or regulating unit 140 as described below.
  • the control and / or regulating unit can be a programmable logic controller which has a memory unit, for example in the form of a flash memory, in which the memory parameters required for control, for. B. in relation to the desired glue pattern, are stored.
  • Figure 2 shows a variation of the embodiment of Figure 1 with a supply unit 201 for label tapes.
  • the same reference numerals designate the same elements as mentioned, so that for the sake of clarity a further description is dispensed with.
  • the labels are provided according to this development, however, in the form of label strips, of which the individual labels are separated by means of a cutting device.
  • a feeder 237 for feeding a label tape 238 is arranged with a plurality of unlabeled labels.
  • the feed device 237 comprises two storage holders 237a, for example in the form of label tape rolls, an automatic splice splicer 237b, deflection rollers 237c, a loop buffer 239, a tracking control unit 237d for guiding the label strip 238 and a delivery unit 237e, for example with a sprung one Drive roller for the label tape.
  • a cutter 235 and a transfer cylinder 231 are further provided.
  • the cutting device 235 is shown with a rotor 235a, which is driven by an individually activatable drive unit 235b with the desired rotation frequency. frequency is driven.
  • the cutters (not shown) attached to the rotor 235a cut the supplied label tape 238 into individual labels 232, which are subsequently transferred to the pallets 104-106.
  • the cutting of the label strip 238 is done in engagement with the counter-cutting cylinder 231, which also serves as a transfer cylinder for transferring the labels 232 to the pallets 104 - 106.
  • the transfer cylinder 231 is preferably designed as a vacuum cylinder with suction in its lateral surface, for example as a so-called vacuum roller on which the label tape or labels are sucked and held.
  • the transfer cylinder 231 can be driven via an individually controllable drive unit 231 a in synchronism with the rotational movement of the rotor 235 a.
  • the separated labels 232 are taken over from the transfer box 231 analogously to the previously described transfer from a label box also in this development by passing the pallets 104-106 past them.
  • the circulating and pivoting movements of the pallets 104 - 106 are controlled for this purpose according to the rotational frequency of the counter-cutting cylinder 232 by the control and / or regulating unit 140.
  • FIG. 3 shows a cross-section through a schematic illustration of a device 370 for removing cold glue according to the present invention.
  • the removal of glue from a deformable reservoir 380 takes place by the action of a deforming device 360 on the reservoir, whereby the receiving volume 381 is reduced for glue.
  • the thereby forming in the glue pressure pushes the amount of glue to be removed through an opening 383 of the container.
  • the deformation of the storage container 380 is effected by direct mechanical action of a deformation element 390 on the wall of the storage container.
  • the deformation element 390 in this embodiment is movable relative to the reservoir 380 along the longitudinal direction L by means of a motor 350 which sets a spindle 351 in motion, which engages in a fixed corresponding mating thread 352.
  • the motor 350 may be designed to be controllable and / or regulatable, so that this relative movement can be controlled and / or regulated by means of a control and / or regulating unit 359.
  • the portion of the extraction device 370 holding the reservoir 380 is fixed while the deformation element 390 moves relative thereto. It is understood that the arrangement can be modified such that, alternatively or additionally, the reservoir can be moved relative to the deformation element.
  • the reservoir 380 is connected with its opening 383, for example via a screw thread, with a connection 399 of the device. Due to the screw thread can deflated storage container thus be easily replaced by a filled storage tank.
  • the pressed-out glue is passed on to a transport line 328, which, as mentioned above, continues to convey it to the glue printer.
  • the transport line can have a control valve 342 for precise control of the delivered amount of glue.
  • a pressure sensor 341 and / or a temperature sensor 358 may be provided which measure the pressure or the temperature of the glue in the transport line 328. The measured data can be passed on to the control and / or regulating unit 359 and thus incorporated into the control and / or regulation of the motor 350 of the drive device.
  • the deformation element 390 is mounted on a carrier 391, wherein a spring 392 is provided between the deformation element and the carrier, which biases the deformation element relative to the carrier.
  • the spring 392 shown here is arranged in a recess 393 of the deformation element 390.
  • the deformation element 390 has a rod 394, which is guided in a guide 395 of the carrier 391.
  • two sensors 396 and 397 are arranged in this embodiment, which detect a position of a protrusion 398 arranged on the rod 394.
  • a movement of the carrier 391 can be controlled such that the projection 398 is always between the two sensors 396 and 397.
  • a predetermined force of the spring 392 can be adjusted to the deformation element 390 and thus also a predetermined pressure on the glue contained in the reservoir 380.
  • excessive pressure which could lead to cracking of the container wall, can be effectively avoided.
  • the surface of the deformation element mimicking the shape of the upper portion of the reservoir 380 may first be brought into mechanical contact with the lower part of the reservoir and then displaced therein by further displacement.
  • the reservoir is deformed such that the lower part of its wall is pushed into the receiving volume 381, so that a curved edge 382 of the deformed reservoir 380 results.
  • the wall of the storage container is pushed further and further into the interior of the storage container.
  • gradually approximately the entire glue contained in the reservoir is pushed out of this.
  • the shape of the reservoir 380 and the deformation element 390 can be selected such that as few as possible during the deformation process Spaces for glue result. Accordingly, a stem-shaped deformation element, as shown here, be formed with a slightly smaller cross-sectional area than that of the reservoir in order to be pushed into this can.
  • the wall or at least the part of the wall of the reservoir 380 to be deformed are formed from a material that is deformable by means of the force that can be applied by the deformation device 360, for example PET, in a corresponding wall thickness.
  • different regions of the wall can be formed from different materials and / or with different wall thicknesses.
  • it is desirable that the non-deformable upper part of the reservoir 380 is not deformed in the illustrated development and thus bulges, otherwise a complete emptying of the reservoir and a controlled glue pressure can not be guaranteed.
  • the deforming means shown here comprises a housing 356 for receiving that part of the container which is brought into contact with an outer surface of the part of the container which is not to be deformed encloses this part like a sleeve.
  • the part of the container wall which is in direct mechanical contact with the housing 356 can thus not be bulged due to the increasing pressure in the receiving volume 381.
  • the housing 356 can be equipped with a controllable heating and / or cooling device 355, which allows the glue in the receiving volume 381 to be heated or cooled to an optimum processing temperature.
  • the regulation of the heating and / or cooling device 355 can take place taking into account the temperature measured by the temperature sensor 358.
  • the deformation element 390 may be fixed, while the reservoir 380 is moved by the drive device 350.
  • the port 399 for the opening 383 may be disposed below the reservoir 380.
  • the shape and type of the deformation device 360 can also be adapted to the possible shapes of the reservoir.
  • FIG. 4a shows a side view of an exemplary vacuum pallet 404 according to the present invention.
  • FIG. 4b shows the associated front view of the pallet.
  • the pallet shown is eccentric about a pivot axis 419 in this non-limiting development pivoted.
  • the illustrated vacuum pallet 404 is formed with a vacuum pad 461 made of a porous plastic sintered material such as polytetrafluoroethylene (PTFE) or high-density polyethylene (HDPE), the microchannels thereof via a vacuum supply line 443 from a vacuum pump 449 generate negative pressure to the label contact surface 423 of the vacuum pallet 404 pass.
  • PTFE polytetrafluoroethylene
  • HDPE high-density polyethylene
  • a plurality of suction openings 446 may be provided in the abutment surface 423, which are connected via channels 445 to one or more main channels 447.
  • the main channel 447 may in turn communicate with the vacuum supply line
  • the main duct 447 can be connected via a compressed air supply line 444 to a compressed air supply unit 448, for example a pump, so that the openings 446 can be acted upon with compressed air for detaching a transported label.
  • a compressed air supply unit 448 for example a pump
  • the vacuum supply lines 443 and the compressed air supply lines 444 of a plurality of pallets via a common or two separate rotary distributor with the vacuum pump 449 and the compressed air supply unit 448 may be connected.
  • the vacuum pump 449 and the compressor 448 may be designed so controllable that by means of the control and / or regulating unit 140 of the labeling as described above, applying the vacuum pallet 404 with vacuum or compressed air depending on the position of the pallet in circulation around the pallet carousel 103 can take place.
  • control valves (not shown) in the supply lines 443 and
  • control and / or regulating unit 140 may be provided, which are opened and closed controlled by the control and / or regulating unit 140.
  • piezoelectrically formed control valves may be provided in individual channels 445 for the suction openings 446, which can be opened and closed individually or in groups by means of the control and / or regulating unit 140. This makes it possible to realize a supply of the suction openings adapted to the format of the label to be transported with negative pressure, as shown, for example, on the left side of FIG.
  • FIG. 5a shows a schematic cross section of an alternative embodiment of a vacuum pallet according to the present invention.
  • a cross-section of the gluing unit formed as a glue printer 508 is shown.
  • FIG. 5b additionally shows a perspective view of the vacuum pallet 504.
  • a vacuum pallet 504 mounted eccentrically on a pivot axis 519 is shown, which however in this development has its curved outer surface via a multiplicity of suction openings in the form of suction cups 546 features.
  • the openings of the suction cups 546 thus form the overlying the base surface 566 of the pallet label contact surface 523.
  • the suction cups 546 of the vacuum pallet 504 are connected in the illustrated, non-limiting development via supply channels 545 in groups both with a vacuum manifold 562 and with a compressed air distributor 563.
  • supply channels 545 are connected to vacuum supply lines 543, while the opposite ends are connected to compressed air supply lines 544.
  • the vacuum distributor 562 and / or the compressed air distributor 563 may in particular be designed as a rotary distributor, for example by providing an annular compressed air supply 564.
  • the pallet 504 can be supplied with vacuum or compressed air around the pallet carousel 103 during the entire cycle.
  • corresponding control valves can also be provided here, but they are not shown for the sake of clarity.
  • Partial figure 5a also shows a schematic cross-section of a size printer 508 according to the ink jet method.
  • the cold glue for example by means of the removal device described above, is fed to the size printer 508, which sprays it via a plurality of glue nozzles 565 directly onto the glue application surface of a label transported by the vacuum pallet 504.
  • the glue application surface is preferably guided past the glue nozzles 565 at a constant distance d, so that an approximately arbitrary glue pattern can be applied to the label by controlled activation and deactivation of the glue nozzles.
  • the control of the glue nozzles can be taken over by the control and / or regulating unit 140.
  • the size printer 608 may have a plurality of parallel lines of glue nozzles 665, the direction of which is oriented perpendicular to the direction of movement of the label 607 and tangent to the abutment surface of the vacuum pallet 604.
  • the glue nozzles can also be designed as glue channels in one end face of the glue printer.
  • the right side of the figure shows a front view of the nozzle array of the glue printer 608, while on the left side of the figure a front view of the vacuum pallet 604 is shown.
  • the front view of the glue printer 608 shows a plurality of glue nozzles 665 which, in the illustrated, non-limiting embodiment, are arranged in three mutually parallel rows are.
  • the rows may be shifted "gap" with each other by placing the glue nozzles of the middle row between the glue nozzles of adjacent rows in the vertical direction while the unneeded glue nozzles 665a are shown open, the glue nozzles 665b required in each case are activated in such a controlled manner that the glue application is applied only to the glue application surface of the breast label 607, but not to the unoccupied contact surface of the vacuum pallet Depending on the extent of the nozzle field in the vertical direction, labels of virtually any size and shape can be glued.
  • the vacuum pallet 604 shown in the left-hand part of FIG. 6 has a multiplicity of suction openings 646 arranged in the form of a matrix, which optionally may be designed as suction cups.
  • control valves can be provided in the supply channels of the intake openings, by means of which the intake openings can be activated and deactivated individually or in groups.
  • the intake openings can be activated and deactivated individually or in groups.
  • the activated suction ports 646b are shown filled while the deactivated suction ports 646a are shown open.
  • the activation pattern shown here corresponds to the shape of the indicated breast label 607.
  • FIGS. 7a-f show exemplary label formats and glue images which can be processed with the further developments described.
  • FIG. 7 a shows a breast label with glue strips 775 applied horizontally.
  • the glue nozzles of two adjacent rows shown in FIG. 6 may, for example, have a vertical spacing of 3.5 mm so that glue strips can be applied at intervals of 3.5 mm.
  • irregular label formats such as the breast label in FIG. 7a or the champagne bow in FIG. 7b can be glued to the edge.
  • Figure 7c shows an all-round label to which an initial gluing 776a, center gluing 77d, end gluing 776b and two center security stripes 776e have been applied. It can be clearly seen how the use of glue can be considerably reduced with the help of the glue printer. In addition, in the end gluing 776b, a corner 776c can be purposefully cut out, which can be used, for example, as a point of application for removing the label.
  • FIGS. 7d-f show labels with more complex glue patterns.
  • a surface in the form of a logo was left out, while the labels of FIGS. 7e and 7f were printed with a rectangular glue pattern 778 and a round glue pattern 779, respectively.
  • the described labeling devices make it possible to apply cold glue in almost any size images directly on the glue application surfaces of labels of almost any shape and size. Due to the direct application of glue, the glued labels can also be placed directly from the pallets onto the containers to be labeled. An otherwise required gripper cylinder can thus be omitted. In addition, the use of the ink jet method for coating the labels allows precise and economical glue application, which saves resources and costs.

Landscapes

  • Labeling Devices (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)

Abstract

L'invention concerne un dispositif et un procédé pour préparer des étiquettes (107) à être appliquées sur des récipients (113), de la colle étant appliquée suivant un motif d'encollage variable au moyen d'une machine d'impression de colle (108, 508, 608) commandable directement sur une surface d'application de colle (122) d'au moins une étiquette (107).
EP16716031.6A 2015-06-30 2016-04-11 Dispositif et procédé pour étiqueter des récipients Active EP3317189B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015212140.2A DE102015212140A1 (de) 2015-06-30 2015-06-30 Vorrichtung und Verfahren zum Etikettieren von Behältern
PCT/EP2016/057906 WO2017001071A1 (fr) 2015-06-30 2016-04-11 Dispositif et procédé pour étiqueter des récipients

Publications (2)

Publication Number Publication Date
EP3317189A1 true EP3317189A1 (fr) 2018-05-09
EP3317189B1 EP3317189B1 (fr) 2022-05-11

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EP16716031.6A Active EP3317189B1 (fr) 2015-06-30 2016-04-11 Dispositif et procédé pour étiqueter des récipients

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US (1) US20180186494A1 (fr)
EP (1) EP3317189B1 (fr)
CN (1) CN107810147A (fr)
DE (1) DE102015212140A1 (fr)
ES (1) ES2921952T3 (fr)
WO (1) WO2017001071A1 (fr)

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Also Published As

Publication number Publication date
US20180186494A1 (en) 2018-07-05
CN107810147A (zh) 2018-03-16
WO2017001071A1 (fr) 2017-01-05
ES2921952T3 (es) 2022-09-05
DE102015212140A1 (de) 2017-01-05
EP3317189B1 (fr) 2022-05-11

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