EP3626635A2 - Installation d'emballage et procédé de fabrication d'un emballage - Google Patents

Installation d'emballage et procédé de fabrication d'un emballage Download PDF

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Publication number
EP3626635A2
EP3626635A2 EP19188822.1A EP19188822A EP3626635A2 EP 3626635 A2 EP3626635 A2 EP 3626635A2 EP 19188822 A EP19188822 A EP 19188822A EP 3626635 A2 EP3626635 A2 EP 3626635A2
Authority
EP
European Patent Office
Prior art keywords
packaging
machine
suction plate
elements
packaging machine
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
EP19188822.1A
Other languages
German (de)
English (en)
Other versions
EP3626635B1 (fr
EP3626635A3 (fr
Inventor
Florian Lutz
Markus WÄGELE
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.)
Multivac Sepp Haggenmueller GmbH and Co KG
Original Assignee
Multivac Sepp Haggenmueller GmbH and Co KG
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 Multivac Sepp Haggenmueller GmbH and Co KG filed Critical Multivac Sepp Haggenmueller GmbH and Co KG
Publication of EP3626635A2 publication Critical patent/EP3626635A2/fr
Publication of EP3626635A3 publication Critical patent/EP3626635A3/fr
Application granted granted Critical
Publication of EP3626635B1 publication Critical patent/EP3626635B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B35/00—Supplying, feeding, arranging or orientating articles to be packaged
    • B65B35/10—Feeding, e.g. conveying, single articles
    • B65B35/16—Feeding, e.g. conveying, single articles by grippers
    • B65B35/18—Feeding, e.g. conveying, single articles by grippers by suction-operated grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/162—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by feeding web material to securing means
    • B65B7/164—Securing by heat-sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B35/00—Supplying, feeding, arranging or orientating articles to be packaged
    • B65B35/10—Feeding, e.g. conveying, single articles
    • B65B35/24—Feeding, e.g. conveying, single articles by endless belts or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B35/00—Supplying, feeding, arranging or orientating articles to be packaged
    • B65B35/30—Arranging and feeding articles in groups
    • B65B35/36—Arranging and feeding articles in groups by grippers
    • B65B35/38—Arranging and feeding articles in groups by grippers by suction-operated grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B35/00—Supplying, feeding, arranging or orientating articles to be packaged
    • B65B35/30—Arranging and feeding articles in groups
    • B65B35/44—Arranging and feeding articles in groups by endless belts or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
    • B65B47/02—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved with means for heating the material prior to forming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/24—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for shaping or reshaping completed packages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material
    • B65B9/045—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material for single articles, e.g. tablets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B2220/00—Specific aspects of the packaging operation
    • B65B2220/02—Erecting a carton by pushing a blank into a form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/02—Feeding sheets or wrapper blanks
    • B65B41/04—Feeding sheets or wrapper blanks by grippers
    • B65B41/06—Feeding sheets or wrapper blanks by grippers by suction-operated grippers

Definitions

  • the present invention relates to a packaging system according to claim 1.
  • the invention further relates to a method according to method claim 12.
  • a major challenge is to precisely pick up the shell parts fed to the machine for further processing, in practice also called trays, in a predetermined format, to transport them further and finally to a work station , for example to transfer a thermoforming station to the packaging machine.
  • a precise handover to a deep-drawing station means that the deep-drawn packaging troughs produced on it can also be precisely merged with trays provided for this purpose and connected to one another in order to form a lower packaging part composed of different packaging materials for receiving a product, for example a food product provided along the subsequent working route, such as e.g. Sausage, meat or cheese.
  • multilayered packaging lower parts can be produced along a packaging machine from materially different shell parts, which can have special packaging characteristics due to the use of different materials.
  • the WO 2013/004837 A1 discloses a packaging machine according to the above intended use, a transfer drum being used as a transfer element between a transport means and a film web in order to pick up structural elements from the transport means and to place them under the film web.
  • the surface of the transfer drum comprises a plurality of indentations, each of which can at least partially accommodate a structural element.
  • the disadvantage of this is that the transfer drum takes up a lot of space and the transfer of the trays is difficult to synchronize with the manufacturing process of the packaging machine.
  • the WO 2017/001114 A1 also discloses a packaging machine corresponding to the purpose of the invention.
  • a suction unit is used for the transfer of structural elements on the packaging machine.
  • the suction unit sucks the structural elements made available to it on the inside of a floor.
  • the disadvantage of this is that for the transport of deeply formed structural elements, the suction unit must also be formed deep down to the inside of the structural element in order to suck the structural element on the inside of the floor. This takes the suction unit itself, especially for the transport of various Tray formats, a lot of space and also requires further expensive construction work on the packaging machine, especially on other units that are functionally connected to the suction unit.
  • the work station designed to receive and further process the structural elements must have a large opening width, for which expensive lifting mechanisms are required. Furthermore, there is the risk that the structural elements still provided in a certain format of the suction unit will slip slightly from their predetermined position during the intake on the suction unit due to the suction, which can cause undesirable manufacturing inaccuracies in a subsequent processing process.
  • the packaging base For suction on the packaging base, the latter must also have a certain flat surface suitable for suction, as a result of which it is restricted to certain packaging formats.
  • the predetermined format of structural elements which is to be transferred to the work station depends on the operation of the feeding device which supplies the packaging machine with structural elements. Overall, this can slow down the production flow on the packaging machine. In particular influenced by the WO 2017/001114 A1 the part of the feed device protruding into the installation space of the packaging machine the structural design of the packaging machine. From a technical point of view, there is a certain structural dependency because there is a restriction to certain machine types and feed means.
  • the object of the invention is to provide a packaging system which is improved with respect to the prior art described above, and a corresponding method, which, above all, enables the manufacturing process to be carried out precisely, economically and in a versatile manner by means of a compact construction of the packaging system. Furthermore, the packaging system according to the invention should be distinguished from the prior art by an increased cost-saving potential for its production.
  • the packaging system comprises a packaging machine, which is preferably configured in the form of a deep-drawing packaging machine, and a feed device for the packaging machine, by means of which packaging elements for receiving products can preferably be fed to the packaging machine in a predetermined format for a packaging process taking place thereon.
  • the packaging elements fed to the packaging machine by means of the feed device can have any shape, for example be flat or bowl-shaped.
  • the packaging elements are in particular made of a paper-like fiber material, e.g. made of cardboard, possibly a coated cardboard, made of a metallic material, e.g. made of aluminum, a foamed material, e.g. made of styrofoam, a two-component material and / or of another material which is primarily suitable for forming a lower packaging part in combination with a film material.
  • the packaging machine used according to the invention has a machine frame, at least one work station, preferably attached to the machine frame, and a transport device.
  • the machine frame essentially defines a space for the packaging machine. Excellent technical components of the packaging machine can be attached to the machine frame.
  • the transport device of the packaging machine comprises a grouping unit for receiving the packaging elements fed to the packaging machine by means of the feeding device and a transfer unit for transporting packaging elements received thereon to the work station.
  • the transport device set up on the packaging machine for transporting the packaging elements is thus essentially composed of two transport units, namely the grouping unit and the transfer unit.
  • the grouping unit can advantageously be used functionally as an extension of the feeding device, but as an independently operable means of transport for the packaging machine.
  • the grouping unit can be controllable as a means for producing the predetermined transfer format on packaging elements for reception by means of the transfer unit.
  • the separately controllable grouping unit can to a certain extent compensate for delays in the preparation process for the packaging elements.
  • the grouping unit and the transfer unit can be brought together by means of a relative movement such that the packaging elements, which are preferably positioned in a predetermined format on the grouping unit, can be received by means of the transfer unit.
  • the invention offers the advantage that the packaging elements transferred from the feeding device to the packaging machine can be made available precisely in a predetermined format within the installation space of the packaging machine, can be transported further according to this and can be transferred to the work station for further processing. All transport routes carried out by means of the transport device can be realized by means of compact units without being dependent on a specific production format of the respective packaging elements.
  • the transport device can be integrated excellently within the machine frame of the packaging machine and is excellently suited for use according to the invention with different types of feed devices.
  • the constructive subdivision of the transport device into the grouping unit and the transfer unit results in an advantageous integral structure on the packaging machine, which makes it easier to carry out transport movements that are easy to carry out in order to continuously feed the transported packaging elements to the work station for further processing.
  • the machine concept according to the invention offers, from a design point of view, an increased potential for cost savings in the manufacturing process of the packaging machine, which nevertheless results in a versatile standard structure, which can, however, be easily adapted to certain circumstances.
  • the packaging system according to the invention is particularly suitable for transporting packaging elements which are designed as trays.
  • the packaging elements In the form of trays, the packaging elements each have a bowl-shaped body with an upper opening area.
  • the transfer unit comprises a suction plate for gripping the packaging elements.
  • the suction plate is compact and is ideal as a means of transport in the machine frame of the packaging machine.
  • the suction plate comprises at least one receptacle shape which is designed to at least partially positively engage in the upper opening area of a tray and to suck the tray firmly onto an inner surface of at least one side wall of the tray by means of a vacuum applied to the suction plate, to transport the tray to the work station.
  • the tray transport by means of the suction plate takes up little space within the packaging machine, which leads to an inexpensive construction of the packaging machine from a design point of view.
  • the transfer unit further comprises a linear drive with a guide fastened to the machine frame of the packaging machine and a slide which is adjustably mounted thereon in or against a working direction of the packaging machine and to which the suction plate is fastened.
  • a linear drive with a guide fastened to the machine frame of the packaging machine and a slide which is adjustably mounted thereon in or against a working direction of the packaging machine and to which the suction plate is fastened.
  • a reversibly controlled adjustment movement of the suction plate can be precisely controlled by means of the linear drive and enables high adjustment accelerations.
  • the suction plate can be stably provided in the receiving position on the linear drive for receiving the packaging elements.
  • the suction plate can be precisely adjusted back and forth at a predetermined height using the linear drive. As a gripper positioned within the machine frame, the suction plate can thus ensure that the tray is provided at the work station.
  • a variant of the invention provides that the grouping unit has a lifting mechanism and a conveyor belt mounted on it in a height-adjustable manner.
  • the height-adjustable conveyor belt can preferably be adjusted vertically translationally within the machine frame of the packaging machine by means of the lifting mechanism in order to move the conveyor belt by means of a lifting movement to pass on the packaging elements positioned thereon to the suction plate which can be positioned above it.
  • the conveyor elements belonging to the grouping unit can be fed directly with the packaging elements transported by means of the feeding device.
  • the conveyor belt although it is an independent transport unit used on the packaging machine Transport device forms, can therefore be used as an extension of the feed device.
  • the grouping unit is thus available as an excellent link between the feeding device and the packaging machine.
  • the lifting movement on the grouping unit can be coordinated in particular together with an adjustment movement of the suction plate in such a way that a continuous production process on the packaging machine can be controlled.
  • the respective movement sequences on the grouping unit, in particular a stroke adjustment taking place thereon, and on the suction plate, in particular a horizontal displacement thereof, take place overlapping one another in part, so that overall manufacturing times can be optimized.
  • the lifting movement on the grouping unit can advantageously be used to adjust the orientation of certain formats of respective packaging elements when they are transferred to the suction plate. It is conceivable that triangular trays are tilted by lifting them against the suction plate into a transport position in which they are attached to the suction plate and can be passed on to the work station. This results in a further application-related advantage in connection with the height-adjustable, controllable hoist.
  • the grouping unit is attached as a module integrated in the machine frame of the packaging machine.
  • the grouping unit can be completely integrated as an independent unit within the machine frame of the packaging machine.
  • the grouping unit forms an independent transport module within the machine frame of the packaging machine, which is compatible with different types of feed devices that feed packaging elements from outside the machine frame of the packaging machine.
  • the transfer unit is preferably attached as a module integrated in the machine frame of the packaging machine. This favors an integral, compact construction of the packaging machine. Despite its increased functionality, the packaging machine can thus be manufactured without any reconstruction measures visible from the outside.
  • the compact, integral design of the packaging machine can be improved by positioning the grouping unit and the transfer unit within the machine frame below a film transport unit of the packaging machine running in the working direction.
  • the various packaging materials at the work station for their further processing, in particular for the production of composite lower parts produced therefrom, can be brought together precisely.
  • the packaging machine is a thermoforming packaging machine, the work station being a molding station of the thermoforming packaging machine, to which packaging elements for the respective connection with a film material provided at the molding station can be fed by means of the transfer unit, in particular by means of the suction plate, according to a machine cycle.
  • the feed device preferably comprises a denester for separating packaging elements stacked therein or a folding device for producing individual trays.
  • a denester for separating packaging elements stacked therein or a folding device for producing individual trays.
  • such feeder types can easily interact with the grouping unit provided on the packaging machine in order to transfer packaging elements or trays, preferably in a predetermined format, to the grouping unit for further transport on the packaging machine.
  • the feed device has a transport section which is configured to arrange at least a part of the packaging elements provided for the predetermined format, in particular packaging elements transported next to one another in the transport direction, with respect to the predetermined format and to accordingly transfer them to the grouping unit.
  • the transport section for forming the predetermined format of packaging elements transported thereon is preferably equipped with guide walls which are designed such that the packaging elements transported alongside one another along the transport section have predetermined distances from one another transversely to their transport direction at the latest when they are transferred to the grouping unit.
  • the transport section of the feeding device can contribute to the production of the predetermined format.
  • the transport section can thus change an output format of the packaging elements output by the denester or by the folding device with respect to the predetermined transport format on the packaging machine.
  • the transport section comprises at least one chain with spacers, which ensure that the packaging elements transported along the transport section maintain predetermined distances from one another in the transport direction.
  • the transport section can therefore be used at least as a pre-positioner in order to attach the packaging elements to the packaging machine as precisely as possible with regard to the predetermined transport format to hand over the grouping unit.
  • the grouping unit can also advantageously contribute to the final format formation.
  • the trays fed in according to a variant of the packaging machine have any shaped shell body and are in particular made of a paper-like fiber material, e.g. of cardboard, of a metallic material, e.g. made of aluminum, a foamed material, e.g. made of styrofoam, a two-component material and / or of another material which is suitable for forming a packaging lower part in combination with a film material.
  • the transported trays are preferably cardboard trays.
  • the suction plate is preferably configured to transport packaging elements or trays in a predetermined transport plane.
  • the suction plate is extremely compact and can thus be integrated into the machine frame of the packaging machine to save space.
  • the suction plate preferably has at least one receptacle shape, which is at least partially designed in the form of an inner contour of an upper opening area facing it of one of the receptacle forms for receptacle and transport, so that the receptacle form is at least partially form-fitting in the transport plane in its upper plane when the tray is transported Opening area is arranged and aligns the tray in the transport plane in a predetermined position on the suction plate. It is thus possible to grip the provided trays only in their upper opening area, so that the suction plate can be made compact overall. It is conceivable that the receptacle used as a gripping means is detachably attached to the suction plate as an interchangeable component, so that the suction plate can be easily converted with regard to different tray shapes.
  • the receiving shape of the suction plate is preferably designed as a negative vacuum shape with regard to the upper opening area of the respective trays.
  • the receptacle form can be immersed in a form-fitting manner in the upper opening area of a tray provided in a complementary manner, so that the tray can be precisely positioned on the suction plate, transported further in a compact manner and precisely delivered to the work station. Due to the form-fitting and compact tray holder, great accelerations are possible for the suction plate, so that the packaging process as a whole can run in a time-optimized manner.
  • the suction plate also benefits the work station provided for the further processing of the tray, because the suction plate as a plate-like body with the work station it can be merged that short strokes are possible.
  • This offers the possibility of a compact, cost-reducing construction of the packaging machine.
  • Comparable advantages also result for the transport units that are used to prepare the trays for mounting on the suction plate.
  • the suction plate is therefore ideal as a plate-shaped transfer medium within a compact machine room for transport between other functional units provided therein.
  • the trays transported by means of the suction plate can preferably be sucked into the predetermined position on the suction plate by means of a vacuum applied to the suction plate.
  • the receptacle form can be designed to suck the tray onto at least two, preferably opposite, inner sides of side walls formed therein.
  • several receptacle forms are formed on the vacuum plate, for example in a 2x2, 2x3 or 3x3 format, in order to transport several trays in this format per conveying cycle using the vacuum plate.
  • the trays can preferably be connected automatically and / or manually to the vacuum from the holding molds formed on the suction plate and / or manually.
  • An embodiment of the invention provides that the receptacle has at least one hole which, when the tray is positively placed in the transport plane, lies against an inner wall surface of the upper opening area, so that a vacuum applied to the suction plate via the hole in the receptacle by means of the tray a predetermined holding force to secure the tray in the predetermined position.
  • the vacuum applied to the suction plate can be varied to apply holding forces of different sizes.
  • a preferred variant could provide that the vacuum and thus the holding force thus generated can be automated and / or adjusted manually on the packaging machine with regard to the weight of the tray to be transported.
  • An embodiment of the invention provides that the receptacle has a plurality of bores which are formed on at least two opposite side walls of the receptacle for sucking up corresponding inner sides of the tray. This allows the suction surface to be increased overall, which enables the tray to be held in a precise position. This can also result in advantages for other work cuts and / or test steps taking place on the suction plate, which are explained in more detail below.
  • a preferred variant provides that at least one bore is formed on all the side walls of the receiving mold, so that the tray can be sucked in by means of the receiving mold on all inner sides of the side walls formed thereon. This has proven to be particularly advantageous for the transport of larger trays, which are used, for example, for packaging larger food products, for example heavy portions of cheese or meat.
  • the bore can have, for example, a circular, slit-like, wave-shaped and / or zigzag-like suction surface in order to suck the tray against its inner wall area. It would even be conceivable for the bore to be designed as a suction opening that runs around the circumference of the receptacle in order to suck the inside of the tray all around in its upper opening area.
  • the receiving form is preferably designed as a centering body with respect to the upper opening area of the tray.
  • high process speeds can also be achieved with this, because the receiving form designed as a centering body can be positioned at least partially in a self-locking manner in the upper opening area of the tray, so that there is an optimal positive connection for further transport.
  • At least two opposite side walls of the receiving mold at least partially comprise an inclined side wall surface.
  • the receiving form can be configured as a hollow body. It would be conceivable that the suction plate is configured to carry out a working step on the received tray via a cavity created on the receiving mold, for example pretreating the volume formed by the tray and connected to the cavity with a fluid.
  • the suction plate preferably comprises a kinking device, which is designed to form a sealing flange along a preferably pre-perforated border of the upper opening area in a tray arranged on the receiving mold. This can be particularly during The tray is transported to the work station so that the suction plate is available both as a transport and as a forming module. The trays can thus be supplied as semi-finished parts to the suction plate and further shaped thereon. The buckling process can take place without additional time, ie during the transport of the trays by means of the suction plate.
  • the receiving form is preferably designed as part of the folding device.
  • the recording form thus fulfills a multiple function on the suction plate according to the invention.
  • the receiving form can preferably be used as an abutment for the buckling process, so that a precise sealing flange can be produced along the edge of the tray.
  • the suction plate can have an abutment edge, along which the sealing flange can be bent.
  • the abutment edge can be formed on the suction plate in such a way that it is aligned for the folding process for the pre-perforated border of the tray, that is to say it rests against the tray, so that a precise kink is created for the sealing flange.
  • the buckling device has a forming plate on which the receiving shape is adjustably mounted.
  • the forming plate is primarily placed above the receiving mold.
  • the shaping plate and the receiving mold can be moved relative to one another by means of a lifting movement in such a way that they enable the sealing flange to be produced on the tray of the receiving mold placed on it.
  • the receiving form can in particular be movably mounted on the forming plate between a position extended for receiving the tray and a position retracted for performing the kinking process.
  • the buckling device can preferably be designed as an interchangeable module which is fastened interchangeably to the suction plate.
  • the interchangeable module comprises four mounting forms which are fastened to the forming plate in a 2x2 format.
  • An advantageous embodiment consists in the receiving shape being at least partially retractable into the forming plate.
  • the shaping plate can comprise a receptacle into which the receptacle can at least partially move for the buckling process.
  • the shaping plate can have a shaping groove on the circumferential side of the receiving mold, into which sections of the border formed on the tray for producing the sealing flange are guided during the buckling process, so that the buckling process can be precisely controlled.
  • the receiving form is spring-loaded on the forming plate. At least one spring element is preferably provided between the shaping plate and the receiving mold in order to prestress the receiving mold into the extended position.
  • the buckling device preferably has a movable lifting mechanism integrated in the suction plate.
  • the lifting mechanism preferably comprises a controllable pressure element in order to move the receptacle for the buckling process onto the forming plate arranged above it.
  • the tray placed on the receiving mold can thus be pressed against the forming plate in order to produce the sealing flange.
  • the pressure element is designed as an integral part of the suction plate and can, for example, be integrated therein as a controllable pressure membrane in order to coordinate the lifting movement of the receiving mold relative to the forming plate.
  • the lifting mechanism preferably has at least one lifting element which is adjustably mounted within the suction plate with the aid of the pressure element.
  • the lifting element is firmly coupled to one another with the receiving shape.
  • the forming plate itself can be positioned as a rigid part of the suction plate between the receiving mold arranged underneath and the lifting element arranged above it, the pressure element in the pressure-loaded state lifting the lifting element arranged above it away from the latter, so that the lifting element facing away from the pressure element Side of the forming plate positioned receptacle is adjusted to perform a kinking towards the forming plate.
  • the lifting mechanism of the buckling device is preferably designed as a frame module which is movably mounted on the suction plate relative to the forming plate positioned therebetween in order to carry out the buckling process.
  • the suction plate can be equipped with at least one dynamic pressure test unit. This makes it possible to check whether a tray is properly placed on the receiving mold and / or whether a sealing flange has been properly formed on the tray.
  • the dynamic pressure test unit is preferably at least partially formed on the forming plate in order to control the contact of the tray, in particular its sealing flange.
  • the receptacle form can be designed to be actively temperature-controllable, so that trays placed thereon are pretreated at least in sections, in the case of a downstream one Process can be better connected with another shell material, for example a packaging film. It would be conceivable to carry out the temperature control by means of electromagnetic heating on the recording form.
  • the suction plate preferably has a maximum overall height of 50 cm, preferably 30 cm, more preferably 10 cm. In such a compact plate-like design, it can be excellently accommodated and moved within the machine frame of the packaging machine.
  • the suction plate When viewed in the working direction, the suction plate can be positioned in front of, behind or to the side of the work station to be supplied with packaging elements or trays.
  • the invention also relates to a method for transporting packaging elements along a packaging system.
  • packaging elements are first transported to a packaging machine by means of a feed device.
  • the transported packaging elements are preferably at least partially, in particular the packaging elements transported next to one another in the transport direction, transferred to a grouping unit of the packaging machine with regard to a predetermined format.
  • a relative movement is carried out between the grouping unit and a transfer unit of the packaging machine in order to transfer the packaging elements received on the grouping unit to the transfer unit.
  • the packaging elements provided on the basis of the grouping unit are then gripped by means of the transfer unit, in particular by means of a suction plate of the transfer unit, in order to transport the packaging elements to a work station of the packaging machine.
  • the transport flow of the packaging elements is composed along the respective transport routes of the feed device, the grouping unit and the transfer unit in order to transfer the packaging elements fed to the packaging machine to the work station for further processing.
  • the method according to the invention can be implemented by a structurally simple, compact and inexpensive construction.
  • the packaging elements transported with the aid of the method according to the invention can be designed as trays, the transfer unit, in particular a suction plate of the transfer unit, positively engaging in an upper opening area of the respective trays and the respective trays being sucked onto an inner wall surface of at least one side wall formed thereon.
  • the transfer unit in particular a suction plate of the transfer unit, positively engaging in an upper opening area of the respective trays and the respective trays being sucked onto an inner wall surface of at least one side wall formed thereon.
  • the grouping unit is adjusted in height relative to the transfer unit of the packaging machine by means of a lifting movement in order to transfer the packaging elements to the transfer unit.
  • a height adjustment of the grouping unit which is carried out by means of the lifting movement is simple and inexpensive to produce and can be integrated excellently within the packaging machine.
  • the lifting movement can advantageously be controlled, so that overall a continuous process can take place along the packaging system.
  • the packaging elements are preferably transferred from the feed device to a conveyor belt of the grouping unit.
  • the conveyor belt used in the grouping unit can be operated independently of a machine type of the feed device.
  • the conveyor belt can also be integrated in a compact manner within the machine frame of the packaging machine and is excellently suited within the machine frame of the packaging machine for interaction with the transfer unit, which is preferably mounted therein.
  • the packaging elements are transported on the packaging machine by means of the modules of the grouping unit and the transfer unit, which are controlled independently but in a coordinated manner.
  • This favors flexible use of the packaging machine belonging to the packaging system according to the invention and of the feed device which supplies the packaging machine with packaging elements.
  • the separately controllable grouping unit which is arranged in the machine frame of the packaging machine, at least slight positional inaccuracies can be corrected within the format of the packaging elements transferred to it.
  • the conveyor belt of the grouping unit could be controlled reversibly.
  • the method according to the invention is optionally characterized in that the suction plate is transferred to the receiving mold during transport by means of an accommodating mold arranged thereon, which is at least partially in the form of an inner contour of an upper opening region facing it, of a tray provided for accommodating and transporting the accommodating mold Trays in the transport plane at least partially engage in its upper opening area and align the tray in the transport plane in a predetermined position on the suction plate.
  • the receiving form formed on the suction plate can be designed as a form-fitting negative form with respect to the upper opening area of the provided tray in order to immerse it complementarily.
  • a vacuum applied to the suction plate sucks the tray at the upper opening area on the inner wall surface thereof by means of a predetermined holding force via at least one bore of the receiving form in order to secure the tray in the predetermined position.
  • a sealing flange is bent over along a preferably pre-perforated border of the upper opening area by means of an adjustable folding device of the suction plate in a tray positioned on the receiving mold. Since this is preferably done during the transport of the tray, a separate forming process can be dispensed with, so that the manufacturing process as a whole can run in a time-optimized manner.
  • the folding process for producing the sealing flange on the suction plate is preferably controlled by means of a lifting mechanism of the folding device which can be pressurized and integrated on the suction lath.
  • the checking of the presence of a tray on the receiving form and / or the proper production of a sealing flange on the tray can be checked by means of at least one dynamic pressure test unit provided on the suction plate. It can be determined by the presence of a predetermined dynamic pressure applied to the tray that the tray is received in the predetermined position on the suction plate for transport and / or that the sealing flange produced by means of the buckling device was shaped in accordance with the tolerance.
  • the suction plate is preferably used as a suction gripper, with which trays are cyclically transported in or against a working direction of the packaging machine from a receiving position in which the trays are transferred to the transfer plate to a transfer position in which the trays are transferred from the suction plate to the work station.
  • FIG. 1A shows a packaging system 100 in a schematic top view.
  • the packaging system 100 comprises a feed device 15 and a packaging machine 1, to which packaging elements VE are fed by the feed device 15.
  • the feed device 15 has a denester or a folding device 80 and a transport section 90 which is designed to transport the packaging elements VE to the packaging machine 1.
  • the transport section 90 comprises a guide plate 91, along which the packaging elements VE can be guided to a predetermined position up to one end 93 of the transport section 90.
  • the packaging machine 1 has a machine frame 6.
  • a transport device 12 for receiving and further transporting the packaging elements VE transported by means of the feed device 15 is stored within the machine frame 6.
  • the transport device 12 comprises a grouping unit 60 and a transfer unit 14.
  • the grouping unit 60 is functionally connected to the feed device 15 by means of a transfer gap S at the end 93 of the transport section 90.
  • the transfer gap S is dimensioned such that packaging elements VE can easily pass from the transport section 90 to the grouping unit 60.
  • the grouping unit 60 has a conveyor belt 61, which is preferably configured to be reversible.
  • the conveyor belt 61 can be operated together with the transport section 90 or decoupled therefrom in the transport direction Q.
  • the respective packaging elements VE can be conveyed along the transport direction Q in such a way that they at the latest on the conveyor belt 61 in a predetermined format F, for example in accordance with the 2x2 format Figure 1A are positioned.
  • the grouping unit 60 has according to Figure 1A a lifting mechanism 18 with a servomotor 62, which is designed to raise the conveyor belt 61 along a lifting direction C directed out of the image plane.
  • the transfer unit 14 is shown as a suction plate 19 in addition to the grouping unit 60.
  • a work station A is positioned further in the working direction R next to the suction plate 19.
  • Work station A can be a forming station 2.
  • the suction plate 19 can be positioned above the grouping unit 60, so that the packaging elements VE positioned on the conveyor belt 61 can be raised in the lifting direction C to the suction plate 19 arranged above and can be gripped by means of the suction plate 19.
  • the suction plate 19 can then be released in the working direction R, transport the packaging elements VE received on it to the work station A and deliver them to the work station A in such a way that they can be connected to a further packaging material provided at the work station A.
  • Figure 1B shows a schematic view of the packaging machine 1 in the form of a deep-drawing packaging machine T.
  • the packaging machine 1 has a work station A designed as a molding station 2, a sealing station 3, a cross cutting device 4 and a longitudinal cutting device 5. These are in this order along the working direction R on the machine frame 6 arranged.
  • a feed roller 7 is fastened on the input side, from which a lower film U as the lower packaging material 8 is pulled off.
  • the bottom film U is by means of a Figure 1B only partially shown film transport device FT in the Forming station 2 transported.
  • packaging troughs M are formed into the bottom film U by means of the forming station 2.
  • the packaging troughs M can be transported further to an insertion section 15, where they can be filled with a product 16 manually or automatically. Following the insertion section 15, the packaging troughs M filled with the products 16 are transported further to a sealing station 3.
  • the packaging troughs M can be sealed with an upper film O, which forms an upper packaging material 10, so that by sealing the upper film O onto the packaging troughs M, closed packages V are produced, which are separated by means of the cross-cutting device 4 and the longitudinal cutting device 5 and can be removed by means of a discharge device 13.
  • the in Figure 1B shown packaging machine 1 via an operator terminal 9, on which process parameters can be set for the respective work stations provided on the packaging machine 1.
  • the operating terminal 9 comprises a control unit 11, which is only shown schematically.
  • the control unit 11 is configured to carry out arithmetic operations, in particular in real time during the manufacturing process, in order to control the packaging machine 1 on a process-based basis, that is to say, if necessary, process-related adaptation of the respective process parameters of the packaging machine 1 to cause.
  • the packaging machine 1 shown also has a transport device 12 assigned to the workstation A according to FIG Figure 1A , which, however, is positioned behind the forming station 2 in the working direction R, that is to say 19 provides packing elements VE against the working direction R of the forming station 2 by means of the suction plate.
  • the Figures 1A and 1B illustrate by way of example that the transport device 12 can transport packaging elements VE in or against the working direction R to the forming station 2.
  • the transport device 12 is configured to continuously supply packaging elements VE to the molding station 2 during the production process, which are connected to the packaging troughs M produced thereon in order to produce a (composite) packaging part VU.
  • Figure 2 shows a perspective view of the transport device 12 integrated in the machine frame 6 of the packaging machine 1
  • the transport device 12 from the outside of the machine frame 6 of the packaging machine 1 by means of the feed device 15 a plurality of trays 17 in a predetermined format F, here in a 2x2 format Figure 1A , to hand over.
  • the trays 17 are in Figure 2 formed as cardboard trays K, but can also be made of another material.
  • the trays 17 are according to Figure 2 Transfer in the predetermined format F to the grouping unit 60 arranged within the machine frame 6, in particular to the conveyor belt 61 provided thereon and vertically adjustable along the stroke direction C by means of the lifting mechanism 18.
  • the lifting mechanism 18 is designed to lift the trays 17 positioned on the conveyor belt 61 in accordance with the predetermined format F in the lifting direction C in order to transfer the trays 17 to the transfer unit 14 positioned above them in a receiving position P1.
  • the conveyor belt 61 can then be lowered back into its original position, in which packaging elements VE can be transferred to it by the feed device 15.
  • the illustrated transfer unit 14 is adjustably mounted in or against the working direction R of the packaging machine 1 between the receiving position P1, in which the trays 17 can be transferred, and a transfer position P2 along a transport plane E, in which trays 17 transported by the transfer unit 14 to the forming station 2 are transferable.
  • the transfer unit 14 is designed as a suction plate 19.
  • the suction plate 19 is adjustable by means of a linear drive 20 in or against the working direction R of the packaging machine 1 between the receiving position P1 and the transfer position P2.
  • the linear drive 20 is equipped with a guide 21 aligned in the working direction R of the packaging machine 1 on the machine frame 6 and a slide 22 mounted thereon, to which the suction plate 19 is attached.
  • an electric motor 64 for example a servo motor, preferably attached to the machine frame 6, is designed to control an adjustment movement of the suction plate 19.
  • the operation of the electric motor 64 can be coordinated by means of the control unit 11 of the packaging machine 1.
  • the in Figure 2 The structure shown shows that the suction plate 19 as such is only moved back and forth horizontally in the transport plane E in the working direction R in order to continuously feed the trays 17 received thereon to the forming station 2 for further processing with the packaging trays M formed thereon.
  • FIG 3 shows the suction plate 19 according to a variant in an isolated representation.
  • the suction plate 19 shown has a plate-shaped upper part 23, by means of which the suction plate 19 on the carriage 22 (see Figure 2 ) can be attached.
  • the suction plate 19 comprises a plate-shaped central part 24 which is connected to the upper part 23.
  • a plurality of receptacle forms 25 extend from the central part 24 on a side facing away from the upper part 23.
  • the receptacle forms 25 are shaped such that, with respect to the trays 17 made available to them for transport, they can at least partially receive them positively in their upper opening area 26 as a negative form.
  • the receptacle forms 25 can each be available individually or coupled to the central part 24 as a replacement or retrofit attachment W for the suction plate 19 in order to be able to convert the suction plate 19 for flexible use with regard to different tray geometries.
  • the receptacle forms 25 shown are each designed as a hollow body H, in particular for reducing the weight of the suction plate 19.
  • the recording forms 25 are in accordance with Fig. 3 configured in particular as a centering body Z, in order, if necessary, to compensate for a slight offset of the trays 17 provided when they are received on the suction plate 19.
  • the receiving forms 25 designed as centering bodies Z have the purpose that the trays 17 placed thereon can be precisely positioned on the suction plate 19, so that on the suction plate 19, in addition to the actual transport purpose, further work steps, for example one in connection with the Fig. 7 and the Fig. 8 described buckling process K, favored.
  • FIG. 3 shows Figure 3 that 25 bores 30 are formed along the respective side walls 28 of the receiving molds.
  • the respective bores 30 lie in sections on the inner wall surface 31 of the trays 17 which are positively attached to the receiving molds 25 (see Figure 4 ) of the upper opening area 26, so that a vacuum VK applied to the suction plate 19 sucks the tray 17 placed thereon via the bores 30 of the respective receiving mold 25 by means of a predetermined holding force P in order to hold the trays 17 in a predetermined position X (see Figure 4 ) to align with the suction plate 19, ie to transport it in the predetermined format F and to transfer it to the molding station 2.
  • Figure 4 shows the suction plate 19 Figure 3 with trays 17 attached to it in the predetermined position X.
  • the received trays 17 each have a bowl-shaped trough shape MF with an upper opening area 26, into which the respective receiving forms 25 are positively immersed.
  • the upper opening regions 26 formed on the respective trays 17 have an inner contour 27 which at least essentially corresponds to the formation of respective side walls 28 of the receptacle forms 25.
  • the respective side walls 28 of the receiving molds 25, which are oriented toward the side of the machine frame 6, are designed to be inclined, so that they have an inclined suction surface 29 (see Figure 3 ).
  • Figure 4 also shows that the respective trays 17 are received by the suction plate 19 both by means of a form fit and by means of a force fit.
  • the form fit is achieved with the aid of the receptacle forms 25 produced as negative vacuum forms.
  • the adhesion for the Transport of the trays 17 provides the vacuum VK applied to the respective inner wall surface 31 of the trays 17.
  • Figure 5 shows the suction plate 19 according to another variant in order to transport a different format F on trays 17 'than is shown by means of the suction plate 19 described in connection with the previous figures.
  • the trays 17 ' are transported in a 3x3 format by means of the suction plate 19.
  • a large number of bores 30 are formed both in a plate part 32 and on the respective receiving molds 25 in order to evenly distribute the vacuum VK applied to the suction plate 19 for fixing the trays 17 ′.
  • Figure 6 shows several connecting channels 33, which are formed in the plate part 32 of the suction plate 19, as well as respective connections 61, which conduct the vacuum VK generated on the suction plate 19 to the bores 30 formed on the side walls 28 of the receiving molds 25.
  • the vacuum VK applied via the respective connection channels 33 and / or the connections 61 can be supplied and blocked in a targeted manner to certain receptacle forms 25 by means of suitable valve control.
  • FIG. 7 shows the suction plate 19 with a kink device 34 integrally formed thereon.
  • the kink device 34 comprises an adjustable lifting mechanism 70 integrated in the suction plate 19.
  • the lifting mechanism 70 comprises a lifting element 42, for example in the form of a plate which is located within the frame shown in FIG Figure 7
  • the partially hollow upper part 23 shown is movably arranged, and a pressure element 34 arranged underneath, which is present in particular in the form of an inflatable membrane 46.
  • the lifting element 42 is connected to the receiving molds 25 by means of connector pins 47.
  • the connector pins 47 extend through a for a buckling process K (see Figure 8 ) formed forming plate 37 of the buckling device 34.
  • the lifting element 42 which is positioned above the forming plate 37, and those which are fastened to the lifting element 42 by means of the connector pins 47, Receiving molds 25 positioned on a side facing away from the forming plate 37 form a functionally connected module of the buckling device 34.
  • the membrane 46 lifts the lifting element 42 upwards, away from the forming plate 37.
  • the receptacle forms 25 coupled thereto for the buckling process K are also lifted in order to have a sealing flange 36 on the trays 17 attached thereto (see Figure 8 ) to manufacture.
  • the lifting element 42 lies on an upper side 50 of the shaping plate 37.
  • the receiving molds 25 are accordingly in a corresponding manner Figure 7 Extended position 38 shown. In this position 38, the receiving molds 25 are positioned spring-loaded by means of respective spring elements 49.
  • the cooperating spring rate of the respective spring elements 49 can be matched to the pressure-loaded operation of the membrane 46 in such a way that an in Figure 8 indicated predetermined articulation stroke KH comes about.
  • the receptacle forms 25 can at least partially be inserted into the receptacles 48 formed thereon on the forming plate 37 arranged above, in order to pull the trays 17 arranged thereon onto the forming plate 37.
  • Figure 8 shows that the trays 17 arranged on the receiving molds 25 are deformed along the edge 35 thereof by the articulation stroke KH, as a result of which the sealing flange 36 is formed on the respective trays 17.
  • FIG. 7 The suction plate 19 shown holds the receiving molds 25 arranged thereon spring-loaded in the extended position 38, in which the trays 17 are transferred to the suction plate 19 without a sealing flange 36 formed thereon.
  • Figure 8 shows the respective receptacle forms 25 in a retracted position 39, in which the receptacle forms 25 are drawn into the corresponding receptacles 48 of the forming plate 37 positioned above them by means of the lifting mechanism 70 which is now pressurized against the spring preload.
  • the suction plate 19 shown therein also has a dynamic pressure test unit 41.
  • the dynamic pressure test unit 41 is formed on the forming plate 37 in such a way that it can in particular be checked whether a tray 17 is properly positioned on the suction plate 19 for a transfer process to the work station A. Likewise, it can be checked by means of the dynamic pressure test unit 41 whether the sealing flange 36 has been bent in accordance with the tolerance.
  • Figure 9 shows the transport device 12 in a side view, wherein the suction plate 19, in addition to its function previously explained in the context of the invention, is also used as a tilting guide KF.
  • the trays 17 ′ raised in the lifting direction C by means of the lifting mechanism 18 are tilted during the lifting towards the suction plate 19 by means of the receiving molds 25 formed thereon until the trays 17 ′ move in Figure 10
  • the stroke movement along the stroke direction C can be adapted according to the tray geometry.
  • the Figures 9 and 10 further show a servo motor 65 which is provided for the operation of the conveyor belt 61 on the lifting mechanism 18.
  • the transport device 12 used in the invention can be used at different points along the packaging machine 1, in order to respectively carry out trays 17 fed to the packaging machine 1 from outside for a further processing process carried out there, for example for connecting to the forming station 2 deep-drawn packaging troughs M to feed.
  • the transport device 12 can be in the working direction R of the packaging machine 1 Figure 1 viewed in front of or behind the forming station 2 configured as work station A, in order to produce trays 17 corresponding to the packaging troughs M produced thereon for producing packaging lower parts VU made from the trays 17 and the packaging troughs M (see Figure 1B ) to manufacture.
  • the respective lower packaging parts VU produced in the molding station 2 are then transported, so to speak, as a shell composite to the insertion section 15.
  • the transport device 12 used in the invention is not for use on a thermoforming packaging machine T according to Figure 1 limited, but can also be used in an advantageous manner on other types of machines, for example on traysealers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Specific Conveyance Elements (AREA)
EP19188822.1A 2018-08-30 2019-07-29 Installation d'emballage et procédé de fabrication d'un emballage Active EP3626635B1 (fr)

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DE102018214761.2A DE102018214761A1 (de) 2018-08-30 2018-08-30 Verpackungsanlage und verfahren zum herstellen einer verpackung

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EP4122833A1 (fr) * 2021-07-20 2023-01-25 MULTIVAC Sepp Haggenmüller SE & Co. KG Installation d'emballage et procédé d'alimentation en découpes de carton
EP4219356A1 (fr) * 2022-02-01 2023-08-02 MULTIVAC Sepp Haggenmüller SE & Co. KG Transport d'éléments structuraux pour emballages
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DE102020203695A1 (de) 2020-03-23 2021-09-23 Multivac Sepp Haggenmüller Se & Co. Kg Verpackungsanlage zum befüllen von tiefziehmulden und kartonagen sowie verfahren
DE102021107878A1 (de) 2021-03-29 2022-09-29 Multivac Sepp Haggenmüller Se & Co. Kg Verpackungsanlage und verfahren mit fehleranalyse
DE102021127483B4 (de) 2021-07-05 2024-05-29 Weber Food Technology Gmbh Verpackungsmaschine

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EP3626635B1 (fr) 2023-09-06
US11427363B2 (en) 2022-08-30
EP3626635A3 (fr) 2020-07-08
ES2959697T3 (es) 2024-02-27
US20200071011A1 (en) 2020-03-05
DE102018214761A1 (de) 2020-03-05

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