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EP3328739B1 - Procédé de fonctionnement d'une machine de remplissage de forme verticale pour la fabrication de sacs avec un joint de fond et un différent joint de tête - Google Patents

Procédé de fonctionnement d'une machine de remplissage de forme verticale pour la fabrication de sacs avec un joint de fond et un différent joint de tête Download PDF

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Publication number
EP3328739B1
EP3328739B1 EP17751021.1A EP17751021A EP3328739B1 EP 3328739 B1 EP3328739 B1 EP 3328739B1 EP 17751021 A EP17751021 A EP 17751021A EP 3328739 B1 EP3328739 B1 EP 3328739B1
Authority
EP
European Patent Office
Prior art keywords
transverse
seams
seam
draw
tubular
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.)
Active
Application number
EP17751021.1A
Other languages
German (de)
English (en)
Other versions
EP3328739A1 (fr
Inventor
Volker Dersch
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.)
Rovema GmbH
Original Assignee
Rovema 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 Rovema GmbH filed Critical Rovema GmbH
Publication of EP3328739A1 publication Critical patent/EP3328739A1/fr
Application granted granted Critical
Publication of EP3328739B1 publication Critical patent/EP3328739B1/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
    • 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
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2042—Means for altering the cross-section of the tube filling opening prior to transversal sealing, e.g. tube spreading devices
    • 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
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • 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
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/213—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles the web having intermittent motion

Definitions

  • the invention relates to a method for operating a tubular bag machine for the production of bags with a bottom cross seam and a different head transverse seam according to the preamble of claim 1.
  • tubular bags are known in which the bottom cross-seam is formed in a different way than the cross-head seam.
  • tubular bags are known in which the bottom cross seam is folded laterally to form, for example, a footprint, whereas the head cross seam is formed as a simple longitudinal cross-seam.
  • the tubular bags then differ in terms of the seams on the head or bottom.
  • a head transverse seam and a bottom transverse seam are produced in each work cycle by the biaxially driven transverse sealing jaws by a corresponding film welding process.
  • the head and bottom transverse seams produced in this way delimit neighboring tubular bags from one another, so that the Formation of the individual bags then with a separator, such as a cutting knife, the film must be severed between the commonly produced bottom and top cross seams.
  • the inventive method is first of all characterized in that on the inside of the film web a Faltform Georgia is stationary, which cooperates in the formation of the gusset with the movable sofalter.
  • the distance between the transverse sealing jaws and the fixed folding molding is different in the formation of the head transverse seams than in the formation of the floor transverse seams.
  • the minimum distance of the transverse sealing jaws to the fixed folding molded piece in the production of the two head transverse seams is significantly greater than the minimum distance between the transverse sealing jaws and the folding shaped piece in the production of the floor cross seams.
  • the travel of the transverse sealing jaws is varied depending on whether two head transverse seams or two bottom transverse seams are to be sealed in the next working cycle. Nonetheless, most production processes require the production of tubular bags each having a constant height between bottom cross seam and head cross seam. In order to realize this constant bag length of all sealed bags in a simple manner, is provided by a preferred method variant that the Abzugsgeschwindigeit the trigger in the formation of a first bag a first speed profile, the Abzugsgeschwindigeit the trigger in the formation of an immediately following second tubular bag a thereof corresponds to different second velocity profile.
  • the speed profile of the take-off speed is alternately changed in this preferred process variant.
  • the process according to the invention is basically arbitrary.
  • the process according to the invention is particularly important in the manufacture of tubular bags, in which strip-shaped closing elements which can be brought into releasable engagement in the region of the head transverse seam are fastened transversely to the longitudinal axis of the film web. Because in this type of tubular bags, the production with different head cross seams and bottom cross seams is essential if in the area of the bottom cross seam, a footprint is desired.
  • Fig. 1 is shown in side view an embodiment of a tubular bag 01 produced by the method according to the invention.
  • the tubular bag 01 in this case has a folded bottom cross seam 02 and a non-folded head cross seam 03.
  • the film web 04 is longitudinally sealed with a longitudinal sealing device along a longitudinal seam 05 before filling and prior to the production of the transverse seams 02 and 03. Due to the folded bottom cross seam 02, a base can be formed on the bottom 06 of the tubular bag 01.
  • strip-like closing elements 07 and 08 which can be brought into releasable engagement, can be seen, which enable re-closing of the tubular bag 01 opened by the user after the head cross-seam has been removed.
  • Fig. 2 shows the tubular bag 01 in cross section along the section line II. It can be seen that the tubular bag 01 is not folded in the area below the head cross seam 03.
  • Fig. 3 represents the tubular bag 01 along the section line II-II.
  • the film web 04 is laterally folded at two side folds 09, thereby forming an at least slight footing on the bottom 06.
  • Fig. 4 shows several tubular bag 01 produced by the method according to the invention, wherein in the illustration according to FIG Fig. 4 the separation of the individual tubular bag 01 after filling and sealing is not shown.
  • the closing elements 07 and 08 are in Fig. 4 not shown.
  • the respective adjacent tubular bag 01 are sealed in such a way that either the two adjacent bottom transverse seams 02 and in the next working cycle the two adjacent head transverse seams 03 are sealed with the transverse sealing jaws. This is required to each alternately fold laterally the film tube formed from the film web 04, whereupon then the bottom cross seams 02 are sealed and then renounce in each successive working cycle on a folding of the film web and to seal the unfolded head transverse seams 03.
  • the inventive method for producing the tubular bag 01 is based on the representation in Fig. 5 and Fig. 6 be explained in more detail.
  • tubular bag machine 10 has a frame 11, at its upper portion a forming shoulder 12 is arranged, via which the band-like film web 04 is passed to form a longitudinal tube.
  • the film web 04 is formed in the longitudinal direction, wherein the outer edges are arranged overlapping, to subsequently welded together to form the longitudinal seam 05 to each other.
  • the welding of the film web edges takes place by means of a longitudinally welded device 13, which is shown only schematically and which is arranged in the longitudinal direction on the outside of a filling tube 14. Due to the refolding of the film web 04 in the region of the forming shoulder 12 and the welding by the longitudinal welding device 13, a basically endless film tube is thus formed, which encloses the filling tube 14.
  • two take-off belts 15, which are driven longitudinally adjacent to the filling tube 14, the film web 04 or the endless tube formed therefrom is moved downwards.
  • a biaxially driven transverse welding device 16 is arranged below the filling tube 14 .
  • the two transverse sealing jaws 17 can be driven in the Z direction, ie in the conveying direction of the tubular bag 01, and toward one another, ie transversely to the conveying direction.
  • the transverse sealing jaws 17 are pressed against each other and the film web 14th welded by heat.
  • the transverse sealing jaws 17 of the transverse sealing device 16 are moved in the Z direction in order to follow the conveying movement of the tubular bag 01 from top to bottom.
  • Fig. 5 shows the tubular bag machine 10 in the sealing of two folded bottom transverse seams, wherein, as shown in FIG Fig. 5 the transverse sealing jaws 17 of the transverse sealing device 16 occupy their highest point in the Z direction.
  • the two side folders 18 cooperate with a folding form 19 arranged on the inside of the film web 04.
  • the folding form 19 is mounted in the extension of the filling tube 14, wherein the cross section of the Faltform Cultures 19 just the desired wrinkling by retracting the Sofalter 18 corresponds.
  • Fig. 6 the bagger 10 is shown during the next working cycle to form two unfolded head transverse seams 03.
  • the transverse sealing device 16 with the transverse sealing jaws 17 takes in accordance with the illustration in Fig. 6 their highest point during the round. It can be seen that the transverse sealing jaws 17 when moving together the seal of the un-folded head transverse seams 03 with respect to the Faltform Georgia 19 has a greater distance 20. By this additional distance 20 of the transverse sealing jaws 17 for Faltform Georgia 19 at the start of sealing to seal the two head transverse seams 03 is an undesirable wrinkling in the region of the head transverse seams 03, as otherwise caused by the Faltform fabrics 19 avoided.
  • the sofalter 18 are during the working cycle for sealing the two head transverse seams 03 out of engagement of the film web 04th
  • the withdrawal speed of the two discharge belts 15 is varied.
  • the take-off speed of the take-off belts 15 the change in distance, i. the variation of the Z coordinates of the transverse sealing jaws 17 at the beginning of sealing of the bottom transverse seams 02 on the one hand and the head transverse seams 03 on the other hand are compensated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Making Paper Articles (AREA)

Claims (4)

  1. Procédé de fonctionnement d'une ensacheuse (10) comprenant un dispositif de scellage transversal (16) pouvant être entraîné de manière biaxiale pour produire des sachets tubulaires (01), une bande de film (04) étant fermée par une soudure transversale de fond (02) et une soudure transversale de tête (03) après la formation d'un tube de film, au moins une zone de bord de la bande de film (04) du sachet tubulaire (01) étant latéralement pliée en utilisant un plieur latéral (18) déplaçable perpendiculairement à l'axe longitudinal de la bande de film (04) afin de former un soufflet latéral (09) avant la formation de la soudure transversale de fond, et deux soudures transversales de fond (02) de sachets tubulaires (01) adjacents étant formées en une seule opération du dispositif de scellage transversal (16), et deux soudures transversales de tête (03) de sachets tubulaires adjacents étant formées en une seul opération du dispositif de scellage transversal (16), et les sachets tubulaires (01) étant formés dans une orientation alternante dans la direction d'enlèvement au moyen d'un dispositif d'enlèvement (15),
    caractérisé en ce que
    le plieur latéral (18) interagit avec une pièce façonnée de pliage (19) fixe disposée du côté intérieur de la bande de film (04) lors de la formation du soufflet latéral (09) dans la région des soudures transversales de fond (02), la distance minimale entre le dispositif de scellage transversal (16) et la pièce façonnée de pliage (19) dans la direction d'enlèvement sur la trajectoire fermée étant changée de manière alternante lors de la formation des soudures transversales de tête et des soudures transversales de fond, la distance minimale entre le dispositif de scellage transversal (16) et la pièce façonnée de pliage (19) étant supérieure lors de la production des deux soudures transversales de tête (03) à la distance minimale entre le dispositif de scellage transversal (16) et la pièce façonnée de pliage (19) lors de la production des soudures transversales de fond (02).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    la vitesse d'enlèvement du dispositif d'enlèvement (15) correspond à un premier profil de vitesse lors de la formation d'un premier sachet tubulaire (01), la vitesse d'enlèvement du dispositif d'enlèvement (15) correspondant à un deuxième profil de vitesse différent lors de la formation d'un deuxième sachet tubulaire immédiatement suivant.
  3. Procédé selon la revendication 2,
    caractérisé en ce que
    la vitesse d'enlèvement du dispositif d'enlèvement (15) à laquelle la bande de film est enlevée dans la direction longitudinale est changée de manière alternante entre une vitesse maximale et une vitesse minimale de telle manière que le changement alternant de la distance minimale entre le dispositif de scellage transversal (16) et la pièce façonnée de pliage (19) est compensée et la longueur de tous les sachets tubulaires (01) scellés est maintenue constante.
  4. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    des éléments de fermeture (07, 08) en forme de bande qui sont engrènables de manière détachable sont fixés perpendiculairement à l'axe longitudinal de la bande de film (04) dans une position adjacente à la soudure transversale de tête (03) du sachet tubulaire (01).
EP17751021.1A 2016-07-18 2017-07-11 Procédé de fonctionnement d'une machine de remplissage de forme verticale pour la fabrication de sacs avec un joint de fond et un différent joint de tête Active EP3328739B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016213087.0A DE102016213087B4 (de) 2016-07-18 2016-07-18 Verfahren zum Betrieb einer Schlauchbeutelmaschine zur Herstellung von Beuteln mit einer Boden-Quernaht und einer davon unterschiedlichen Kopf-Quernaht
PCT/EP2017/067420 WO2018015217A1 (fr) 2016-07-18 2017-07-11 Procédé permettant de faire fonctionner une ensacheuse servant à fabriquer des sachets présentant un joint transversal de fond et un joint transversal de tête différent de celui-ci

Publications (2)

Publication Number Publication Date
EP3328739A1 EP3328739A1 (fr) 2018-06-06
EP3328739B1 true EP3328739B1 (fr) 2019-09-25

Family

ID=59579593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17751021.1A Active EP3328739B1 (fr) 2016-07-18 2017-07-11 Procédé de fonctionnement d'une machine de remplissage de forme verticale pour la fabrication de sacs avec un joint de fond et un différent joint de tête

Country Status (5)

Country Link
US (1) US10946991B2 (fr)
EP (1) EP3328739B1 (fr)
DE (1) DE102016213087B4 (fr)
ES (1) ES2763808T3 (fr)
WO (1) WO2018015217A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7212356B2 (ja) 2018-12-27 2023-01-25 株式会社イシダ 製袋包装機

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Also Published As

Publication number Publication date
WO2018015217A1 (fr) 2018-01-25
DE102016213087A1 (de) 2018-01-18
US20190248520A1 (en) 2019-08-15
ES2763808T3 (es) 2020-06-01
DE102016213087B4 (de) 2018-07-05
EP3328739A1 (fr) 2018-06-06
US10946991B2 (en) 2021-03-16

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