EP0387530B1 - Vorrichtung zur Umlenkung einer vorlaufenden, entlang ihrer Längsmittellinie zu einem Halbschlauch flach gefalteten Folienbahn - Google Patents

Vorrichtung zur Umlenkung einer vorlaufenden, entlang ihrer Längsmittellinie zu einem Halbschlauch flach gefalteten Folienbahn Download PDF

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Publication number
EP0387530B1
EP0387530B1 EP19900102763 EP90102763A EP0387530B1 EP 0387530 B1 EP0387530 B1 EP 0387530B1 EP 19900102763 EP19900102763 EP 19900102763 EP 90102763 A EP90102763 A EP 90102763A EP 0387530 B1 EP0387530 B1 EP 0387530B1
Authority
EP
European Patent Office
Prior art keywords
guide
rope
guide plate
film web
guide rails
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.)
Expired - Lifetime
Application number
EP19900102763
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0387530A1 (de
Inventor
Hans Beck
Erhardt Glausch
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.)
Beck Packautomaten GmbH and Co KG
Original Assignee
Beck Packautomaten 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 Beck Packautomaten GmbH and Co KG filed Critical Beck Packautomaten GmbH and Co KG
Publication of EP0387530A1 publication Critical patent/EP0387530A1/de
Application granted granted Critical
Publication of EP0387530B1 publication Critical patent/EP0387530B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • 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
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • B65B2009/063—Forming shoulders

Definitions

  • the invention relates to a device for deflecting a leading film web, which is folded flat along its longitudinal center line to form a half-tube, for wrapping leading packaged goods with two self-supporting, parallel, vertically and laterally adjustable guide rails and with self-supporting guide plates arranged underneath the guide rails are adjustable relative to each other and vertically relative to the guide rails.
  • a device of this type is described in EP-PS 68 141.
  • Critical areas in the deflection path of the film web are in the known device at the free ends of the guide rails and guide plates and between the free ends of a guide rail and the underlying guide plate. Since the film web is not supported between the ends of the guide rails and guideways, it tends to flutter between these ends and to get caught and tear.
  • a support for the leading film web in the area between the free ends of guide rails and underlying guide plates is difficult because these device parts are adjustable relative to each other in adaptation to different sizes of goods to be packed in the film web, so their free ends can not be connected to each other by rigid guide members.
  • each guide rail is connected to the free end of the underlying guide plate by a rope or the like flexible, elongated element that the rope slidably guided at the free end of each guide plate and substantially parallel to the plane of the guide plate is deflected, and that the end of the rope facing away from the free end of the guide rail is subjected to a force which holds the rope taut between the free ends of the guide rail and guide plate.
  • the distances between the free ends of the guide rail and guide plate can be changed as desired by the sliding guidance of the rope at the free end of each guide plate and the application of force to the rope.
  • a film web 1 is fed in the direction of arrow A from top to bottom.
  • the film web 1 is folded flat along its longitudinal center line 2 to form a half tube, which consists of a front film layer 3 and a rear film layer 4 and is open on its side opposite the longitudinal center line 2.
  • the film web 1 is guided over two upper, horizontally cantilevered guide rails 5, 6 and two horizontally arranged guide plates 7, 8, which are also cantilevered and are located underneath these rails.
  • the film web 1 folded into a half tube is opened so that the front film layer 3 is guided and deflected via the guide rail 6, the guide plate 8 and the rear film layer 4 via the guide rail 5 and the guide plate 7.
  • An oblique triangular surface 12 is formed between the film layers 3, 4, which expand like a roof, between the free ends 9, 10 of the guide rails 5, 6 and the point 11 where the film layers 3, 4 separate from the longitudinal center line 2. At the base line of this triangular surface 12 between the ends 9, 10, the film web 1 is deflected horizontally inwards.
  • a corresponding deflection takes place on the connecting lines between the free ends 9, 10 of the guide rails 5, 6 and the underlying free ends 13, 14 of the Guide plates 7, 8 and on obliquely mutually extending edges of the guide plates 7, 8 itself, so that finally from the film web 1 a leading in the direction of arrow B, tubular all-round closed envelope 15 results, which on its underside along a center line running in the forward direction 16 has an opening slot, which in turn is formed by the free edges of the front and rear film layers 3, 4 that converge there again.
  • the free edges mentioned are welded together along the line 16, so that now a self-contained film tube is formed, in which (in Fig. 1 from the left) over the free ends 9, 10, 13, 14 of the guide rails 5, 6 and guide plates 7, 8 certain opening items to be packaged can be inserted continuously.
  • the guide rails 5, 6 and guide plates 7, 8 can be adjusted vertically and horizontally relative to one another in a manner to be described.
  • rope 17 or 18 runs between the free ends 9, 13 or 10, 14.
  • the expression "rope” here generally means a flexible, elongated element, for example also a cable, a tape, one Wire or the like. It has been found that the tensioning of the ropes 17, 18 between the aforementioned ends of guide rails and guide plates results in reliable guiding and deflection of the film web 1 can be accomplished, and there is no longer any sticking or tearing of the film.
  • each cable 17, 18 facing away from the free end 9, 10 of the relevant guide rail is acted upon behind the guide plates 7, 8 (in a manner also to be described below) with a force which forces the cable 17, 18 between the free ends of the guide rail and Holds the guide plate taut, but allows the ropes 17, 18 to be lengthened or shortened in the area of these free ends if the distance between the guide rails and guide plates is changed.
  • FIG. 2 shows schematically in side view a device for carrying out the described deflection of the film web 1.
  • At least two adjacent, freely rotating or driven rollers 22 protrude from a machine frame 21, between which the supplied film web 1 folded into a half-tube is fed .
  • the film web 1 is unwound from a supply roll 23 and fed via several deflecting rollers in the manner shown in FIG. 4.
  • the line 22 shown in FIG. 1 is also determined by the rollers 22, at which the two layers 3, 4 of the film web separate in a roof-like manner in the manner shown in FIG. 4.
  • FIG. 2 also show the guide rails 5, 6 and guide plates 7, 8, which are supported on the machine frame 21 in a self-supporting manner, whereby, in contrast to FIG. 1, the guide plates 7, 8 have a smaller one from the guide rails 5, 6 lying above them Have a distance, so that there is an overall flatter, tubular envelope 15 which receives objects 24 to be packed (Fig. 4).
  • FIGS. 2, 3 and 4 Parts of the adjustment mechanism for the guide rails 5, 6 and guide plates 5, 8 are indicated in FIGS. 2, 3 and 4 in the form of joints, screw spindles and bearings.
  • This adjustment mechanism is known per se (EP-PS 68 141) and does not form part of the invention.
  • the cable 17, 18 shortens or lengthens in the area between the free ends of the guide rails and the guide plate, the shortening or lengthening being caused by the lowering or raising Weight 27 or 28 is balanced.
  • weights 27, 28 springs could also be provided which act on the relevant ends of the cables 17, 18 with the necessary force and keep them taut between the guide rail and the guide plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Basic Packing Technique (AREA)
EP19900102763 1989-03-17 1990-02-13 Vorrichtung zur Umlenkung einer vorlaufenden, entlang ihrer Längsmittellinie zu einem Halbschlauch flach gefalteten Folienbahn Expired - Lifetime EP0387530B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3908806 1989-03-17
DE19893908806 DE3908806C1 (enrdf_load_stackoverflow) 1989-03-17 1989-03-17

Publications (2)

Publication Number Publication Date
EP0387530A1 EP0387530A1 (de) 1990-09-19
EP0387530B1 true EP0387530B1 (de) 1993-01-27

Family

ID=6376592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900102763 Expired - Lifetime EP0387530B1 (de) 1989-03-17 1990-02-13 Vorrichtung zur Umlenkung einer vorlaufenden, entlang ihrer Längsmittellinie zu einem Halbschlauch flach gefalteten Folienbahn

Country Status (4)

Country Link
EP (1) EP0387530B1 (enrdf_load_stackoverflow)
DE (2) DE3908806C1 (enrdf_load_stackoverflow)
DK (1) DK0387530T3 (enrdf_load_stackoverflow)
ES (1) ES2037483T3 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006007041B3 (de) * 2006-02-15 2007-08-09 Intersnack Knabber-Gebäck GmbH & Co. KG Folienspreizer für vertikale und horizontale Folienverarbeitungsmaschinen, Formatendrohr mit Folienspreizer sowie Folienbeutelverpackungsmaschine mit Folienspreizer
WO2020058532A1 (de) * 2018-09-21 2020-03-26 Formerfab Gmbh Synchronverstellbare schlauchbeutelformungseinrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3495505A (en) * 1965-08-18 1970-02-17 Tetra Pak Ab Forming ring for guiding and shaping a web-like material into a tube
US3619970A (en) * 1969-11-25 1971-11-16 Weldotron Corp Automatic method and apparatus for the wrapping of articles
DE3152023A1 (de) * 1981-06-27 1983-01-13 Beck & Co Packautomaten, 7440 Nürtingen "vorrichtung zur umlenkung einer fortlaufenden folienbahn in einer verpackungsmaschine"
US4576588A (en) * 1983-11-30 1986-03-18 Fuji Machinery Company, Ltd. Adjustable tube forming apparatus

Also Published As

Publication number Publication date
DE3908806C1 (enrdf_load_stackoverflow) 1990-06-21
EP0387530A1 (de) 1990-09-19
ES2037483T3 (es) 1993-06-16
DK0387530T3 (da) 1993-03-01
DE59000800D1 (de) 1993-03-11

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