EP2783991A1 - Procédé et dispositif destinés à l'emballage de produits - Google Patents

Procédé et dispositif destinés à l'emballage de produits Download PDF

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Publication number
EP2783991A1
EP2783991A1 EP13001635.5A EP13001635A EP2783991A1 EP 2783991 A1 EP2783991 A1 EP 2783991A1 EP 13001635 A EP13001635 A EP 13001635A EP 2783991 A1 EP2783991 A1 EP 2783991A1
Authority
EP
European Patent Office
Prior art keywords
film
films
product
products
conveyor belt
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.)
Withdrawn
Application number
EP13001635.5A
Other languages
German (de)
English (en)
Inventor
Klaus Lorenz
Horst Dilger
Timo Kollmann
Horst Heimann
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.)
Hugo Beck Maschinenbau & Co KG GmbH
Original Assignee
Hugo Beck Maschinenbau & Co KG GmbH
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 Hugo Beck Maschinenbau & Co KG GmbH filed Critical Hugo Beck Maschinenbau & Co KG GmbH
Priority to EP13001635.5A priority Critical patent/EP2783991A1/fr
Publication of EP2783991A1 publication Critical patent/EP2783991A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/14—Packaging paper or like sheets, envelopes, or newspapers, in flat, folded, or rolled 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
    • B65B27/00—Bundling particular articles presenting special problems using string, wire, or narrow tape or band; Baling fibrous material, e.g. peat, not otherwise provided for
    • B65B27/08—Bundling paper sheets, envelopes, bags, newspapers, or other thin flat articles
    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B2011/002—Prestretching mechanism in wrapping machines
    • 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
    • B65B2220/06—Cutting webs along their longitudinal direction

Definitions

  • the present invention relates to a packaging device for packaging products using a film half-tube or two flat films with a film dispenser transversely to the transport direction of the products on a first conveyor belt, a deflection device for the film half-tube or for the flat films in the field of introduction of the products between the upper and sub-film of the film half-tube or flat films, a transverse welding device for closing and separating the film on the front side, a second conveyor belt, and control means for longitudinally controlling and regulating the transport of film half-tube or flat films.
  • the invention further relates to a method for packaging products with a banderole in a packaging machine.
  • Such packaging machines are used for packaging a wide variety of products.
  • a device for stretching a plastic film web in a packaging machine is known.
  • There products are wrapped in a foil laterally overlapping and sealed in the middle of the overlap.
  • the end faces are sealed as usual by means of a transverse welding device which simultaneously separates the film between two successive products.
  • this known device is the Stretched film at the front end of the rear product and at the rear end of the front product just before separation and welding by means of the transverse welding device to provide products with a plastic packaging that fits as close as possible to the product, especially at the end faces.
  • the film and above and below fixed to two successive products upstream and downstream of the transverse welding device.
  • the second pressure belt and the second conveyor belt By increasing the speed of the second pressure belt and the second conveyor belt, the film is stretched between the two Anpressb selectedn and transported with this voltage in the region of the transverse welding device. The film is stretched both between the products as well as on a released from the Anpressb selectedn area briefly.
  • the speed of the second pressure belt and the second conveyor belt is reduced in order to briefly relax the film between the two products in the region of the transverse welding device and to enable welding and separation.
  • the prestressed film on the second product which has largely come from the pressure region of the first pressure belt, is maintained.
  • the front-side welded products are conveyed at greater spacing, ie at a greater transport speed.
  • the pre-stretching of the film just before the transverse welding ensures that the film attaches to the product after welding and thus forms a tight-fitting packaging.
  • the present invention is based on the object, in particular for printed products, such as magazines, to propose a possibility with which a tight package in the longitudinal direction is achieved, the packaging should be so tight that even in the case of two superimposed products these are not from the Packaging can slip out. This should be possible at the same time even with a sufficient clock speed of at least 80 cycles per minute.
  • the packaging device has a film dispenser for the film half-tube or for the flat films, which is driven driven servo motor.
  • the speed of unwinding can be controlled via the control device.
  • a cutting device preferably a knife, for separating the film half-tube in the longitudinal direction in the folded edge and the formation of two separate flat films, between which the product rests, are arranged laterally between the film dispenser and the deflection device.
  • the packaging device further comprises a first pressing device downstream of the deflecting device in front of the transverse welding device above the upper film with the product and a second pressing device downstream of the transverse welding device above the upper film with the product.
  • the pressing devices are also controlled servo motor, so that their contact pressure and the speed can be set arbitrarily.
  • the pressing devices are designed as suction belts, make it possible to bring through holes by means of vacuum the pressure belts in firm immovable contact with the top film, at the same time by relative contact pressure relative movement between the product and the film is excluded.
  • the first conveyor belt and the second conveyor belt are each also formed at least in the region of the lying on the conveyor belt films as a suction belt and servo motor controlled.
  • the two pressing device are connected to the transverse welding device so that they can perform a movement of the transverse welding device in and against the transport direction. This ensures that the pressing device are as close as possible to the transverse welding device, so that the gap in which the films are free, is as small as possible.
  • the control devices produce an expansion of the films between the film dispenser and the first pressing device, so that the films over the deflection over a longer distance, in which the product already rests between the top film and the bottom film , is maintained.
  • Control means or control means are programmable electronic circuits which are capable of individually and selectively controlling the individual servomotors of the drive means used.
  • the top and bottom film is referred to together with films, wherein the top and bottom film can be formed either from two supplied flat films or from a longitudinally cut half-tube film.
  • the control means for cross-welding the film reduce the speed of the second conveyor belt and the second pressing means, so that the tension of the upper and lower foil for the transverse welding is canceled.
  • the Transverse welding done in a conventional manner by lowering a top punch, so that the films securely welded together and the film webs are separated.
  • the transverse welding device in and against the transport direction, and thus the two pressing device are designed to be movable, so that during the welding process, the cross-welding device together with the pressing devices for the duration of the welding process depending on the speed of the films and the product a corresponding distance is moved in the transport direction.
  • the welding punch After welding moves in a known manner, the welding punch back to its original position.
  • the speed of the second conveyor belt and the second pressing device is increased again to the initial speed by the control device, and further, the elongation of the top and bottom sheets on and under the product is maintained by the second pressing means and the second vacuum conveying belt acts to provide a non-slip adhesion to the top film and the bottom film.
  • the products are fed to the first conveyor at a higher speed than it moves so that there is relative movement between the inserted product and the films until the product is carried on the lower film.
  • the first pressing belt In order for the first pressing belt to detect the product merged with the foils in a defined manner, the latter is designed to be movable in the vertical direction according to a further embodiment of the device, so that the product with the foils is already somewhat below the pressure belt until it is with it its vertically moving part the product pushes the films to the product.
  • a film half-tube or two flat films is used with a smaller width than that of the products, wherein the film half-tube is cut in the longitudinal direction at its fold edge and thereby forms an upper and a lower film.
  • the film half-tube or the films are stretched from a film dispenser up to a cross-welding device.
  • the elongation is released for sealing and separating the foils in a region adjacent to the end face of the respective product and, after the crosswelding device, it is maintained on the product until the separation of the foils on the inner end face has taken place.
  • the stretching of the films which has taken place over almost the entire length of the product, is released on the product, so that the films contract in the longitudinal direction and the films wrap tightly around the product as a band.
  • the film half-tube or the flat films are preferably fed transversely to the transport direction of the products on a first conveyor belt.
  • the cut half-film tube or the flat films are deflected at a deflection device in the region of the introduction of the products in the upper and lower film.
  • the cut-film half-tube or the flat films are stretched between the film dispenser and a first pressing device above the upper film with the product or a first conveyor belt in the region of the first pressing device below the lower film.
  • the stretching of the films on the way of the product under the transverse welding device between the first pressing device or first conveyor belt and a second pressing device above the upper film with the product or a conveyor belt in the region of the second pressing device below the lower film is maintained, the second Pressing device and the second conveyor belt are arranged in the transport direction after the cross-welding device. Subsequently, the speed of the second conveyor belt and the second pressing device is reduced to the point that the voltage between the product located under the second pressing device and the subsequent product located below the first device is canceled.
  • the welding and separating the films by means of the transverse welding device between the two products to form end-side welding to the two successive products, wherein the transverse welding device moves together with the two pressing devices in the transport direction and after separation is moved back again.
  • the speed of the second conveyor belt and the second pressing device is increased again to the original speed and the product conveyed out of the region of the second pressing device. This is done by means of a conventional known outlet conveyor.
  • the released expansion causes the welds to be attracted to the product.
  • Tight folding around the product takes place only after the release of the expansion by the second pressure belt and the suction belt located underneath the second conveyor belt.
  • the welded ends of the films are already attached to the product, so that the additional release of the stretched film over the length of the product causes a tight contraction of the meanwhile around the product band.
  • the band is arranged out of the middle of the product on a product half, so that the at least two products are firmly held together and the range of products without Banderole, especially in magazines, is not held together and thus remains freely accessible and visible.
  • FIG. 1 shows the packaging device 1, in a conventional manner, a film transverse to the transport direction the products is supplied.
  • a film dispenser 2 is provided which has a servo drive 3 for unwinding the film.
  • a cutting device 4 for separating the film half-tube 5 in the longitudinal direction, thereby forming two separate film webs, the shape of a top film 15 and a bottom film 16 (FIGS. FIGS. 3 to 5 ) form.
  • the film half-tube 5 is narrower in width than the width of the product and is formed off-center to the product 7 and narrower than the product half.
  • products 7 are guided in a known manner between the upper film 15 and the lower film 16.
  • a first pressing belt 10 with servo drive 10 ' which is arranged above the product web and whose vertical pressure can be adjusted.
  • it is designed as a suction belt, that is, it has a plurality of holes through which the film can be firmly sucked by vacuum.
  • the first conveyor belt 8 is also formed as a suction belt 8 'at least in the region of the width of the product 7.
  • a transverse welding device 11 Following the first pressing belt 10 is a transverse welding device 11, which can also perform a movement in the transport direction during transverse welding.
  • a transverse welding device 11 After the cross-welding device 11 is a second conveyor belt 12 and a second pressure belt 13 with servo drive 13 ', wherein the second pressure belt 13 is formed as a suction belt and the second conveyor belt 12 at least in the product width as a suction belt 12'.
  • Both the first pressure belt 10 and the second pressure belt 13 are connected to the transverse welding device 11 and can perform with it the movement in the transport direction and back with.
  • FIG. 2 shows in side view the first pressure belt 10 and the second pressure belt 13 and the associated transverse welding device 11 with its upper punch 11 'and lower punch 11 "and the first conveyor belt 8 and the second conveyor belt 12 in the areas where they are designed as a suction belt.
  • FIGS. 3 to 5 show the procedure for producing a desired packaging with a band that lies taut around the product 7.
  • the product 7 consists of two consecutive magazines.
  • FIG. 3 shows a first product 7 'under the second pressure belt 13 and a first product 7 "under the first Anpressband 10.
  • the product 7' are at the front edge not shown here, the upper film 15 and the lower film 16 already welded and have already The two pressing belts 10 and 13 rest on the top film 15 and the product 7 'and 7 ", respectively.
  • the suction belt 8 'of the first conveyor belt 8 and the suction belt 12' of the second conveyor belt 12 are actively and firmly connected to the lower film 16 and the respective product 7 'and 7 ", respectively.
  • the elongation of the upper film 15 and the lower film 16 on the product 7 'and 7 " is maintained.
  • the speed of the second conveyor belt 12 and the second pressure belt 13 is increased again to the original speed and the product 7 "is released by the second pressure belt 13, so that it can be transported further by means of, for example, a downstream outlet conveyor belt Release, the stretched top film 15 and the stretched bottom film 16, which are welded to the end edges of the product 7 ', contracted so that the resulting bander tightens the product 7' and in this case clamps both magazines.
  • FIG. 5 the rear product 7 "is passed under the transverse welding device 11 from the first conveyor belt 8 or the first pressure belt 10 to the second conveyor belt 12 and the second pressure belt 13.
  • the transport of the products 7 'and 7 "as far as possible the elongation of the films 15, 16 of the suction belt 8' of the first conveyor belt 8 and first pressing belt 10 is maintained and then by the second conveyor belt 12 and the suction belt 12 ' taken over the second conveyor belt 12 until the products 7 again in FIG. 3 have reached the position shown. Then, the process described above starts again.
  • FIG. 6 shows still the movement of the front end 9 of the first pressure belt 10, which is raised by means of a lifting cylinder 14 for the inlet of a product 7, and then after a certain time to keep the top film 15 and the product 7 safe.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP13001635.5A 2013-03-28 2013-03-28 Procédé et dispositif destinés à l'emballage de produits Withdrawn EP2783991A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13001635.5A EP2783991A1 (fr) 2013-03-28 2013-03-28 Procédé et dispositif destinés à l'emballage de produits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13001635.5A EP2783991A1 (fr) 2013-03-28 2013-03-28 Procédé et dispositif destinés à l'emballage de produits

Publications (1)

Publication Number Publication Date
EP2783991A1 true EP2783991A1 (fr) 2014-10-01

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ID=48050394

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EP13001635.5A Withdrawn EP2783991A1 (fr) 2013-03-28 2013-03-28 Procédé et dispositif destinés à l'emballage de produits

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0537844A1 (fr) 1991-10-14 1993-04-21 SITMA S.p.A. Appareil pour étirer un film continu en plastique dans une machine d'emballage
US5884458A (en) * 1997-08-08 1999-03-23 Alvarez; Oscar Paper wrapping machine
EP1350719A1 (fr) * 2002-04-03 2003-10-08 SITMA S.p.A. Dispositif d'étirement d'un film dans une machine automatique d'emballage de produits
WO2006041435A1 (fr) * 2004-09-21 2006-04-20 C.G. Bretting Manufacturing Company, Inc. Appareil de bandage et procede l'utilisant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0537844A1 (fr) 1991-10-14 1993-04-21 SITMA S.p.A. Appareil pour étirer un film continu en plastique dans une machine d'emballage
US5884458A (en) * 1997-08-08 1999-03-23 Alvarez; Oscar Paper wrapping machine
EP1350719A1 (fr) * 2002-04-03 2003-10-08 SITMA S.p.A. Dispositif d'étirement d'un film dans une machine automatique d'emballage de produits
WO2006041435A1 (fr) * 2004-09-21 2006-04-20 C.G. Bretting Manufacturing Company, Inc. Appareil de bandage et procede l'utilisant

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