EP2112068A1 - Falt- und Wickelbaugruppe für Verpackungsmaschinen - Google Patents

Falt- und Wickelbaugruppe für Verpackungsmaschinen Download PDF

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Publication number
EP2112068A1
EP2112068A1 EP08425282A EP08425282A EP2112068A1 EP 2112068 A1 EP2112068 A1 EP 2112068A1 EP 08425282 A EP08425282 A EP 08425282A EP 08425282 A EP08425282 A EP 08425282A EP 2112068 A1 EP2112068 A1 EP 2112068A1
Authority
EP
European Patent Office
Prior art keywords
product
film
folding
assembly according
sliding
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Withdrawn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
EP08425282A
Other languages
English (en)
French (fr)
Other versions
EP2112068A8 (de
Inventor
Antonio Martelli
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP08425282A priority Critical patent/EP2112068A1/de
Publication of EP2112068A1 publication Critical patent/EP2112068A1/de
Publication of EP2112068A8 publication Critical patent/EP2112068A8/de
Withdrawn legal-status Critical Current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
    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
    • B65B11/18—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in two or more straight paths
    • B65B11/20—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in two or more straight paths to fold the wrappers in tubular form about contents
    • B65B11/22—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in two or more straight paths to fold the wrappers in tubular form about contents and then to form closing folds of similar form at opposite ends of the tube

Definitions

  • the present invention relates to a folding and wrapping assembly for packaging machines.
  • this type of material is particularly subject to permanent deformations (any folding leaves visible traces even if the film is flattened again, eliminating the fold), which of course can compromise the quality of the overall package.
  • These machines fold the lateral flaps by moving the case (in practice a boxlike body), on which the film is pre-wrapped, in a tubular configuration, along its lateral surfaces, through folding devices of various kinds arranged on respective consecutive stations.
  • the considerable longitudinal extension of the line that comprises the folding stations and the heat-sealing station (or stations) in any case comprises guides for conveying the sequence of products to be packaged with the film.
  • the length of the guides (which are always in contact with the film and the product) and the presence of the folding devices and heat-sealing stations that make contact with the film causes considerable friction in the advancement of the products being packaged.
  • the aim of the present invention is to provide a folding and wrapping assembly for packaging machines which has modest dimensions in order to avoid deformation of the package obtained with the film during its advancement along the machine.
  • an object of the present invention is to provide a folding and wrapping assembly for packaging machines which is easy to adjust and with which format changing is easy to perform and quick to provide.
  • Another object of the present invention is to provide a folding and wrapping assembly for packaging machines which is constituted by simple components which are actuated by means of a limited number of movement members in order to facilitate maintenance and installation.
  • Another object of the present invention is to provide a folding and wrapping assembly for packaging machines which has low costs, is relatively simple to provide in practice and is safe in application.
  • the present folding and wrapping assembly for packaging machines characterized in that it comprises an area for introducing the product with a portion of film superimposed thereon, a pusher for sending the product onto a sliding table, respective members for folding the protruding edges of said portion of film, suitable movable apparatuses for folding the end flaps, constituted by superimposed edges of the film, and at least one movable heat-sealing device, said movable apparatuses for folding said flaps being able to slide along the surface of the product to be packaged in order to tension the film along it.
  • the reference numeral 1 generally designates a folding and wrapping assembly for packaging machines.
  • the assembly 1 according to the invention constitutes an evident technical advancement with respect to the background art, since it allows to provide in a single processing station the closure of a film F (both below and at the two ends of the product) while, simultaneously or directly thereafter, the various overlapping parts of the film F are fixed by heat-sealing.
  • Heat-sealing the film F in the same region in which the product P is wrapped therein ensures the possibility to achieve better final quality of the package and simultaneously avoids the need to keep in position the film F (by means of suitable components) on the product P for subsequent transfers, consequently allowing possible disarrangement of such package during the transfers of the product P.
  • the folding assembly 1 comprises an area 2 for inserting the product P, on which a portion of film F is superimposed (as shown in Figure 1 ), a pusher 3 for sending the product P onto a sliding table 4, respective elements for folding the protruding edges of the portion of film F, suitable movable apparatuses for folding the end flaps 5, which are constituted by overlapping edges of the film F, and at least one movable heat-sealing device.
  • the movable apparatuses for folding the flaps 5 can slide along the surface of the product P to be packaged in order to tension the film F along it.
  • the movable apparatuses comprise at least one lamina 6 which is adapted to rest against the surface of the film F, which in turn is applied to the surface of the product P.
  • the lamina 6 is arranged proximate to a perimetric edge of the product P (in the accompanying figures, it can be seen that the reference edges, in that case, are the upper edge and the lower edge of the face arranged at the front, with respect to the direction of advancement along the assembly 1, of the product P).
  • the movable apparatuses also comprise at least one sliding plate 7: the plate 7 is arranged externally with respect to the lamina 6 (and therefore also with respect to the product P). This arrangement is necessary in order to ensure that the end flaps 5 are interposed correctly between each lamina 6 and the corresponding plate 7.
  • the sliding of the plate 7 produces the juxtaposition of the flaps 5 on the corresponding surface of the product P, while the lamina 6 retains its base to the corresponding perimetric edge.
  • the plate 7 slides on the surface of the product P, arranging the flaps 5 along the surface thereof while the base of the flap 5 is kept in the correct position by means of the lamina 6, the arrangement of the flaps 5 in the configuration for closing the package is particularly stable and correct: accordingly, the resulting package has an improved appearance with respect to packages that can be obtained with known types of packaging machine, i.e., avoiding incorrect arrangements of the flaps 5 or the formation of creases, irregularities and/or lack of symmetry.
  • the folding members comprise suitable upper profiles 8, which are forced elastically against the upper surface of the product P being packaged.
  • the upper profiles 8 comprise adjustable pressers 9 for varying the elastic forcing of the profiles 8 on the surface of the product P to be packaged.
  • the pressers 9 are constituted by threaded stems on which there is an axially-acting spring designed to keep the profiles 8 forced against the upper surface of the product P.
  • the area 2 for inserting the product P comprises a lower opening 10, which is arranged upstream of the sliding table 4 for the product P to be packaged.
  • a lifting unit 11 transfers the product P from a supply region arranged below the table 4.
  • the portion of film F for packaging the product P is arranged between the supply region and the table 4, facing the opening 10.
  • a vertical locking shaft 12 is also used which contrasts the lifting unit 11 to correctly clamp the product P wrapped in the film F.
  • the pusher 3 for sending the product on the sliding table 4 is arranged directly upstream of the area 2 for inserting the product P and comprises an actual pusher body (the one indicated specifically by the reference numeral 3 in the accompanying figures) and at least one respective folding member, which can slide along the lateral surface of the product P, gliding over the film F, in order to juxtapose it on the surface of the product P.
  • an actual pusher body the one indicated specifically by the reference numeral 3 in the accompanying figures
  • at least one respective folding member which can slide along the lateral surface of the product P, gliding over the film F, in order to juxtapose it on the surface of the product P.
  • the sliding folding members are four, arranged according to two pairs 13, which are symmetrical with respect to the longitudinal axis of the assembly 1, of facing members 14 and 15.
  • the pair 13 comprises a movable contoured slider 14, which can slide with respect to the pusher body 3 to a configuration in which it overlaps it by a length which is substantially close to half the side of the face of the product P on which it works.
  • the contour comprises an initial divaricated portion 25 for guiding the folding of the film F.
  • the sliding of the slider 14 on the product P in fact, arranges on the face of the product P the film F that protrudes laterally from the product P (since the film F is accompanied by the divaricated portion 25 until it is arranged so as to face and lie proximate to the face of the product P) to form the first flap 5.
  • the pair 13 also comprises a fixed contoured wing 15.
  • the advancement of the product P to be packaged along the sliding table 4 by way of the action of the pusher body 3 produces the sliding contact of the contoured wing 15 against the surface of the face of the product P that faces it, consequently arranging thereon the film F (which is interposed between the product P and the wing 15) so as to protrude laterally from the product P to form the second flap 5.
  • a metallic base plate 16 is rigidly coupled to the pusher body 3, below it, and is substantially aligned with the base of the product P when it is supported by the lifting unit 11.
  • the metallic base plate 16 during advancement, which is matched by its sliding along the lower face of the product P, folds a portion 17 of the film F, which protrudes downward, juxtaposing it on the lower face of the product P.
  • the movable heat-sealing devices comprise a stem 20, which is arranged downstream of the front edge 18 of the table 4 and can move from a first configuration, in which its heat-sealing surface is separated and distant from the surface of the sliding table 4 (as shown in Figure 2 ) to a second configuration, in which its heat-sealing surface is aligned, and optionally also protrudes very slightly, with respect to the surface of the sliding table 4 (as shown in Figure 3 ) for the mutual heat-sealing of the portions 17 and 19 of the film F which are partially superimposed.
  • the movable heat-sealing devices comprise oscillating arms 21 which are arranged downstream of the stem 20 and at the sides of the sliding table 4.
  • the arms 21 are provided, on their movable end, with at least one heated tooth 22; the arms 21 can oscillate from an inactive configuration, in which the tooth 22 is spaced from the corresponding surface of the product P (inactive configuration shown in Figure 4 ), to an active configuration, in which the tooth 22 rests on the flaps 5 of the film F which are superimposed for mutual heat-sealing (configuration shown in Figure 5 ).
  • the movable heat-sealing devices 20 and 21, the sliding plate 7 and the pusher body 3 are connected, with the interposition of suitable gearmotors, levers and cams, to a single driving source: for example, they can all be moved by a suitably controlled electric motor.
  • the product P arrives from a lower region, transferred by the lifting unit 11, to the insertion area 2.
  • the pusher body 3 moves the product P toward the sliding table 4, while the metallic plate 16 arranges the portion 17 along the lower face of the product P. Simultaneously, the edge 18 folds in a similar manner the portion 19, superimposing it on the portion 17.
  • each packaged product P is conveyed along the table 4 to an output station, where it can be removed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
EP08425282A 2008-04-23 2008-04-23 Falt- und Wickelbaugruppe für Verpackungsmaschinen Withdrawn EP2112068A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08425282A EP2112068A1 (de) 2008-04-23 2008-04-23 Falt- und Wickelbaugruppe für Verpackungsmaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08425282A EP2112068A1 (de) 2008-04-23 2008-04-23 Falt- und Wickelbaugruppe für Verpackungsmaschinen

Publications (2)

Publication Number Publication Date
EP2112068A1 true EP2112068A1 (de) 2009-10-28
EP2112068A8 EP2112068A8 (de) 2010-03-10

Family

ID=39764839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08425282A Withdrawn EP2112068A1 (de) 2008-04-23 2008-04-23 Falt- und Wickelbaugruppe für Verpackungsmaschinen

Country Status (1)

Country Link
EP (1) EP2112068A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016155587A (ja) * 2015-02-26 2016-09-01 株式会社ツーウイン 昇降装置と包装装置
ITUB20160142A1 (it) * 2016-01-18 2017-07-18 Multipack Srl Struttura di saldatore di fogli termosaldabili specie per confezionatrici di gruppi ordinati di oggetti

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB911273A (en) * 1960-05-17 1962-11-21 Drohmann Gmbh C Wrapping machine
DE1586015A1 (de) * 1967-03-03 1970-05-21 Drohmann Gmbh C Maschine zum Einwickeln von Gegenstaenden
US3600875A (en) * 1969-10-21 1971-08-24 Grace W R & Co Device for wrapping objects in thermoplastic films
US4098057A (en) * 1976-09-10 1978-07-04 Interbake Foods Inc. Ice cream sandwich wrapping machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB911273A (en) * 1960-05-17 1962-11-21 Drohmann Gmbh C Wrapping machine
DE1586015A1 (de) * 1967-03-03 1970-05-21 Drohmann Gmbh C Maschine zum Einwickeln von Gegenstaenden
US3600875A (en) * 1969-10-21 1971-08-24 Grace W R & Co Device for wrapping objects in thermoplastic films
US4098057A (en) * 1976-09-10 1978-07-04 Interbake Foods Inc. Ice cream sandwich wrapping machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016155587A (ja) * 2015-02-26 2016-09-01 株式会社ツーウイン 昇降装置と包装装置
ITUB20160142A1 (it) * 2016-01-18 2017-07-18 Multipack Srl Struttura di saldatore di fogli termosaldabili specie per confezionatrici di gruppi ordinati di oggetti

Also Published As

Publication number Publication date
EP2112068A8 (de) 2010-03-10

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