EP2133272A1 - Dispositif de production d'une tension de feuille pour une machine d'emballage - Google Patents

Dispositif de production d'une tension de feuille pour une machine d'emballage Download PDF

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Publication number
EP2133272A1
EP2133272A1 EP09161218A EP09161218A EP2133272A1 EP 2133272 A1 EP2133272 A1 EP 2133272A1 EP 09161218 A EP09161218 A EP 09161218A EP 09161218 A EP09161218 A EP 09161218A EP 2133272 A1 EP2133272 A1 EP 2133272A1
Authority
EP
European Patent Office
Prior art keywords
elastic element
film
roller
elastic
frame
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Withdrawn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
EP09161218A
Other languages
German (de)
English (en)
Inventor
Lars Ickert
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 EP2133272A1 publication Critical patent/EP2133272A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/025—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for rigid or semi-rigid containers
    • 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
    • B65B41/12—Feeding webs from rolls
    • B65B41/16—Feeding webs from rolls by rollers
    • 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

Definitions

  • the present invention relates to a device for producing a film tension for a packaging machine, in particular a tray sealing machine or a thermoforming machine.
  • mass-spring systems are known with which as constant as possible film tension of a film, with the e.g. Packages are sealed or from which these packages are formed, to be achieved. Due to the respective spring rate of the springs used, the force applied to the film over the spring travel is not linear. From the relatively high mass of the spring systems also result from the process-related changing acceleration of the film unfavorable Abzugskraftschwankungen. Especially in systems without additional damping these pull-off force fluctuations are amplified by the natural vibration of the system.
  • the object of the present invention is therefore to provide a cost-effective and hygienic device, which also solves the above-mentioned disadvantages of the problematic Abziehskraftschwankung, the voltage peaks within the film and the jamming of the system.
  • the elastic element according to the invention simultaneously fulfills the function of guiding the film deflection rollers and the elastic mobility or the suspension and damping of a deflection roller or a dancer roller.
  • the inventive use of two elastic elements the device can also compensate for large unevenness of the film tension in the transverse direction, without being hindered for example by a clamping guide.
  • This simple construction is advantageous since a rigid, completely precise foil guide can only be realized with very high technical outlay.
  • the shape and smooth surface of the elastic element and the surrounding construction allow for easy cleaning and thus meet the highest hygiene standards.
  • films with different film thicknesses can be used without having to change anything in the construction.
  • Fig. 1 to Fig. 5 a first embodiment of the invention by way of example on a tray sealing machine, also called Traysealer described.
  • Fig. 1 1 shows the tray sealer 1 with a feed belt 2, one or more workstations 3, eg an evacuation, sealing and cutting station, a discharge belt 4, a machine frame 5, a film tensioning device 6, an operating device 30, a film feed roller 32 and a film remover 31.
  • cup-shaped packages are transported into or out of the work station 3 during operation.
  • the packages are eg evacuated, fumigated, sealed and / or cut the top film.
  • a foil 10 (see Fig. 4a, 4b ) is fed through the film feed roller 32, passed through the film tensioning device 6 and the film residue finally wound on the Folienrestaufwickler 31.
  • the film tensioning device 6 has two elastic elements 11, which will be described in more detail below.
  • Fig. 2 shows the elastic element 11 in a perspective view.
  • the elastic member 11 is formed substantially annular or hollow circular cylindrical shape and consists of an elastic material, for example rubber.
  • a first functional portion 19, a second functional portion 20 and a third functional portion 21 are provided on the outside of the annular elastic element 11.
  • a first through-hole 13, a second through-hole 14 and a third through-hole 15 are provided in the first functional section 19, a fourth through-hole 16 and a fifth through-hole 17 in the second functional section 20 and a sixth through-hole 18 in the third functional section 21 will be described in more detail below.
  • the second, third, fourth and fifth through-holes 14, 15, 16, 17 have substantially the same diameter.
  • the first and sixth through holes 13, 18 are smaller in diameter than the other through holes 14, 15, 16, 17.
  • the size of the through holes is not limited to the embodiment shown. Rather, it is designed to accommodate the end sections or axes of guide or deflection rollers 7, 8, 9, 12 is suitable.
  • the through holes 13, 14, 15, 16, 17, 18 in the elastic member 11 are used inter alia, the material savings, as well as the reduction of the oscillating mass.
  • Fig. 3 shows the film tensioning device 6 in a perspective view.
  • An example fixed frame 22 is provided, which consists essentially of two triangular side walls 23 and a rear wall 24.
  • the side walls 23 each have a trapezoidal first side wall recess 25 and a groove-shaped second side wall recess 26.
  • a first guide roller 8, a second guide roller 7 and a shuttle roller or a dancer roller 9 are provided between the two elastic elements 11.
  • a third deflection roller 12 is provided between the two side walls 23, a third deflection roller 12 is provided.
  • the axle diameters of the deflecting rollers 7, 8, 9, 12 each have a smaller diameter than the deflecting rollers 7, 8, 9, 12 for connecting.
  • the first guide roller 8 passes with its projecting axle sections on both sides through the first through hole 13 of the elastic elements 11 and is at least on one side of the film tensioning device 6 fixedly connected to a signal generator 110, which forms the counterpart for at least one sensor 110a.
  • the end of the first guide roller 8 with the signal generator 110 passes through the second side wall recess 26, the signal generator 110 is thus located outside the frame 22.
  • the first guide roller 8 in the second side wall recess 26 is free, which increases the flexibility of the system .
  • the second deflection roller 7 with its projecting axle sections occurs on both sides through the fifth through-hole 17 (see FIG Fig.
  • the change in diameter of the deflection rollers 7, 8, 9, 12 or the transition from roller to axle has the form of a shaft shoulder, which constitutes a stop for the elastic element 11.
  • the first functional sections 19 form a defined stop on the rear wall 24 for the two elastic elements 11.
  • the two elastic elements 11 are additionally firmly connected to the side walls 23 via their respective fourth through-holes 16.
  • the through-holes 14, 15 may be used to support further rollers (not shown) or for variable attachment, e.g. be used on the frame 22.
  • two first frame fasteners 80 are additionally provided, which can accommodate a further role or a strut.
  • the dancer roller 9 passes with its projecting axle sections through the sixth through-hole 18 of the respective elastic element 11.
  • the circumference of the sixth through-hole 18 is preferably slightly smaller than the diameter of the ends or the axis of the dancer roller 9. In this way, the dancer roller 9 is held in its position without play due to adhesion.
  • metallic sleeves are provided, in which the dancer roller 9 is mounted.
  • the axis of the dancer roller 9 is rotatably connected to the rest of the roll or the dancer roll 9 is made in one piece.
  • the dancer roll 9 is not directly connected to the frame but only stored in the elastic member 11.
  • FIGS. 4a and 4b schematically show the operation of the elastic member 11th
  • Fig. 4a shows the elastic member 11 in a schematic side view.
  • the first guide roller 8, the second guide roller 7 and the dancer roller 9 are connected to the elastic member 11 as described above.
  • the axes of the pulleys 7, 8, 9 lie on the corners of a triangle with the annular elastic member 11 interposed therebetween.
  • the running direction of the film 10 is marked with arrows. In this view, the elastic member 11 is in an undeformed state.
  • Fig. 4b shows the elastic member 11 in a deformed or loaded state, in which the elastic member 11 may have, for example, an oval shape.
  • This deformation occurs, for example, due to a process-dependent extraction force increase of the film 10.
  • the axis of the dancer roller 9 is thereby moved in the direction of the deflection rollers 7, 8. This is possible because the dancer roller 9 is not attached to the frame 22, but is coupled only via the elastic member 11 to the other two rollers and thus to the frame 22.
  • the first guide roller 8 is as in Fig. 3 described also movably mounted, but coupled via the groove-shaped second side wall recess 26 to the frame 22 (see. Fig. 3 ).
  • Fig. 5 shows the two elastic members 11, the first guide roller 8 and the dancer roller 9 in a schematic front view, in which representation all other parts of the film tensioning device 6 are hidden. It is shown a position of the two elastic elements 11, in which the film 10 (see Fig. 4a, 4b ) is loaded unevenly in the transverse direction.
  • the elastic elements 11 according to the invention, stress peaks or the destruction of the film 10 do not occur within the film 10, since the elastic elements 11 compensate for the pull-off force fluctuations of the film 10. Due to the material-related internal friction of the elastic members 11, the film 10 is simultaneously sprung and damped, so that it can not come to a swinging of the system.
  • the invention is not limited to the described embodiment. It is e.g. It is also conceivable to store several dancer rolls elastically in the elastic elements or to use more than two elastic elements.
  • the elastic element may take the form of any closed body, e.g. a hollow cylinder or ring or hollow prism, whose cross section has, for example, the shape of a triangle, quadrangle or polygon. In a hollow cylinder and not just edges of the base are possible. A solid body made of any elastic material is conceivable.
  • the position of the film tensioning device is not limited to the embodiment shown. It can also be arranged, for example, after the sealing station and before the film remover.
  • the invention is also not limited to use in a tray sealer. Rather, it is also applicable to a thermoforming machine or a chamber machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Basic Packing Technique (AREA)
EP09161218A 2008-06-12 2009-05-27 Dispositif de production d'une tension de feuille pour une machine d'emballage Withdrawn EP2133272A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810027967 DE102008027967B4 (de) 2008-06-12 2008-06-12 Vorrichtung zur Erzeugung einer Folienspannung für eine Verpackungsmaschine

Publications (1)

Publication Number Publication Date
EP2133272A1 true EP2133272A1 (fr) 2009-12-16

Family

ID=40935767

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09161218A Withdrawn EP2133272A1 (fr) 2008-06-12 2009-05-27 Dispositif de production d'une tension de feuille pour une machine d'emballage

Country Status (2)

Country Link
EP (1) EP2133272A1 (fr)
DE (1) DE102008027967B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3626635A3 (fr) * 2018-08-30 2020-07-08 MULTIVAC Sepp Haggenmüller SE & Co. KG Installation d'emballage et procédé de fabrication d'un emballage

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2262815A1 (de) * 1972-11-10 1974-05-22 Multivac Hagenmueller Kg Vakuumverpackungsmaschine
WO2004000650A1 (fr) * 2002-06-20 2003-12-31 Multivac Sepp Haggenmüller Gmbh & Co. Kg Procede et dispositif d'emballage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2948662A1 (de) * 1979-12-04 1981-06-11 C. Keller GmbH u. Co KG, 4530 Ibbenbüren Vorrichtung zum vergleichsmaessigen der auf eine kunstoff-folie einwirkenden zugkraft beim abziehen der folie von einer folienrolle
US4790125A (en) * 1987-05-01 1988-12-13 New Holland Inc. Feed rollers for round baler net dispenser
GB2252097A (en) * 1991-01-24 1992-07-29 Kenneth Stephen Eddin Orpen Package film dispenser

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2262815A1 (de) * 1972-11-10 1974-05-22 Multivac Hagenmueller Kg Vakuumverpackungsmaschine
WO2004000650A1 (fr) * 2002-06-20 2003-12-31 Multivac Sepp Haggenmüller Gmbh & Co. Kg Procede et dispositif d'emballage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3626635A3 (fr) * 2018-08-30 2020-07-08 MULTIVAC Sepp Haggenmüller SE & Co. KG Installation d'emballage et procédé de fabrication d'un emballage
US11427363B2 (en) 2018-08-30 2022-08-30 Multiva Sepp Haggenmueller Se & Co. Kg Packaging system and method for producing a packaging

Also Published As

Publication number Publication date
DE102008027967A1 (de) 2010-01-07
DE102008027967B4 (de) 2010-09-23

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