EP1140632B1 - Dispositif permettant d'installer un boyau de matiere d'emballage a l'aide d'un repere imprime - Google Patents

Dispositif permettant d'installer un boyau de matiere d'emballage a l'aide d'un repere imprime Download PDF

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Publication number
EP1140632B1
EP1140632B1 EP99906125A EP99906125A EP1140632B1 EP 1140632 B1 EP1140632 B1 EP 1140632B1 EP 99906125 A EP99906125 A EP 99906125A EP 99906125 A EP99906125 A EP 99906125A EP 1140632 B1 EP1140632 B1 EP 1140632B1
Authority
EP
European Patent Office
Prior art keywords
folding
tube
hose
pivot axis
side wall
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
EP99906125A
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German (de)
English (en)
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EP1140632A1 (fr
Inventor
Frank Mario Schellenberg
Steffen Polster
Mauro Cavazzuti
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.)
Tetra Laval Holdings and Finance SA
Original Assignee
Tetra Laval Holdings and Finance SA
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 Tetra Laval Holdings and Finance SA filed Critical Tetra Laval Holdings and Finance SA
Publication of EP1140632A1 publication Critical patent/EP1140632A1/fr
Application granted granted Critical
Publication of EP1140632B1 publication Critical patent/EP1140632B1/fr
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
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/18—Registering sheets, blanks, or webs

Definitions

  • the invention relates to a device for setting up a tube made of packaging material to a processing station in a packaging machine, in which a printed and embossed packaging material web in cross section Round tube formed, sealed by longitudinal sealing, filled and in a cross sealing unit is formed and divided into cuboid packs, the cross sealing unit for intermittent delivery of the hose with adjustable stroke and related of the hose on diametrically opposite sides, each with a pivot axis pivotable folding flap is provided and a sensor for sensing a print mark is arranged.
  • a device is known from DE-A-14 86048.
  • a device is known that a hose made of packaging material, especially plastic coated paper, forms by longitudinal sealing, fills and with the help of an intermittently conveying cross-sealing unit at least in the forms and separates the lower area, the filled, closed cuboid packs after reaching the end of a first vertical machining path on a second horizontal machining path can be completely shaped and removed.
  • the initial phase when setting up the Tube to the cross sealing unit as a processing station especially the further disadvantage if the packaging material tube is round in cross-section that the folding flaps the Touch the hose from the outside and press indefinitely, the hose wrinkled and sometimes even damaged. It is caused by the undefined Kink lines in the plastic-coated surfaces on the inside and / or The outside of the hose destroys and cracks causing leakage for liquids or lead to non-sterility in the case of sterile packaging.
  • the movement is the Folding flaps, however, are indispensable to the at the lower tube end of the pack provide the desired folding.
  • the folding flap control, the movement of the flaps and the technical elements to carry out this flap movement is complicated and space-consuming, so that the flap movement cannot be switched off at any time, when the hose is in the initial phase of setting up.
  • each folding flap upstream is controlled by the sensor driven folding element is arranged, with the help of the Hose can be folded in to a width approximately equal to the width of the finished package in such a way that the hose from the folding flaps is disengaged.
  • the sensor driven folding element is arranged, with the help of the Hose can be folded in to a width approximately equal to the width of the finished package in such a way that the hose from the folding flaps is disengaged.
  • the setup is successful for one sterile packaging material hose in the manner described so quickly that only Material and product corresponding to two packs at the downstream front end of the processed hose are lost as waste.
  • the folding elements fold the tube symmetrically so far that in Cross section between the angularly folded and the adjacent flat side wall Angles from about 5 ° to 85 °, preferably from about 15 ° to 70 ° and very particularly preferably results from about 30 ° to 60 °. If you call this angle ⁇ , for example, then he looks at the hose cross-section when folded and measured. In this folded state, it forms between a pair of longitudinal fold lines on one side a generally flat side wall, which by appropriate A flat side wall on the other side. With the usual 1 liter cuboid milk pack, for example, these are the two large, wide, flat side walls, which are connected by narrow side walls.
  • the one Leg of the angle ⁇ thus results in the cross-sectional view through the straight line, which runs in the generally flat side wall, and one at an angle to this employed adjacent straight line, which runs in the narrow side wall, namely starting at the end folding line, from which the folding element this narrow side wall enfolds.
  • this is Angle ⁇ about 90 °. Understandably, this angle is reduced by folding in, i.e. through the effect of the folding elements. It goes without saying that this also means the two opposite, flat side walls can be moved closer together.
  • the folding element is an elongated one Swivel folding finger is attached to the machine and parallel to it Pivot axis of the folding flap is arranged, and when the folding finger is away from it Swivel axis extends along the tube up to the cross sealing unit.
  • a Folding finger is easy to manufacture and has a robust function. If you take the conveyor track of the hose as being substantially vertical in the sense that the hose is itself moved intermittently from top to bottom, then the pivot axis of the folding finger lies above and upstream above the relevant folding flap; also on the same side of the Hose like the folding flap. The other is diametrically opposed.
  • the pivot axis essentially forms the one upstream, upper end of the relevant one Folding fingers, and the operative is opposite, downstream, below.
  • the sensor for example a photocell, senses the print mark from time to time gives a signal corresponding to the distance of the print mark measured in the transport direction from the sensor. This distance is a measure of the correct position of the print mark.
  • the print mark can be a black or colored line or dot on a white background his.
  • the print mark can also have a more complicated design. For simplification the representation is assumed that the print mark is a simple line. It will also assumed that the decor is in the right place with respect to the embossing lines when it is comes to a stop at the end of the intermittent movement in front of the sensor. It will assumed that at that moment the knife in the cross sealing unit was at the correct one Position between two blanks.
  • Each cut has a length L, which is made up of the height H of the later finished rectangular packaging. plus the two folding fields with the Embossing lines plus the width of the cross seal seam.
  • the hub with which the Cross sealing unit both in the start-up mode of the packaging machine and in its Intermittent use of the hose during operation is smaller than this entire length L.
  • this modified folding results in a Shorter tube length by which the packaging material tube in front of the cross sealing unit is promoted intermittently during the start-up phase. This way you can adjust without any adjustment the correction unit (the folding flaps do not work in the initial phase) the print mark can move much faster relative to the sensor with the result that after passing only fewer initial pieces of the tube, which look like pillow-folded packs, the print mark is in the right place and full operation can be switched on.
  • the hose can be precise supported, shaped and, for example, round (circular or oval) in cross-section Shape are kept while at a short distance downstream or below the Folding elements begin to fold. This makes the folding ratios stable.
  • the folding finger is also located downstream of it Actuating axis arranged at least on the side facing the hose is rounded or carries a freely rotatable folding roller. This also ensures that the Packaging material hose is not damaged even when the folding finger is engaged.
  • the Folding fingers can be straight or curved and intermittent in the direction of transport moving hose or at an angle to it. In any case, the Acting of the two opposite folding fingers or the folding rollers at the moment of Initial phase and their action reduce the distance between each other so that the outside Hose approximately reaches the aforementioned width of the package that will be manufactured later.
  • each folding element has its own, separately for controllable drive, preferably has a cooperating with a tension spring Air cylinder.
  • the respective folding element can then without dead time or Deflecting levers act directly and over short distances. It can be switched on and off quickly, namely at the beginning of the set-up phase producing the waste material until the end thereof. This Time phase should be as short as possible.
  • the folding elements create the differently shaped packaging material hose with the advantageous property that Even if the print mark is initially incorrectly positioned, it will quickly move into the correct position emigrated. After reaching the correct position of the print mark, the folding elements switched off, the product feed is switched on, and the folding flaps begin immediately, namely by acting on the hose.
  • a preferred embodiment of the invention is characterized in that the Folding element is a folding roller rotatably mounted on a guide, the axis of rotation of which is parallel to Pivotal axis of the folding flap, and that the guide forward and across the hose is driven backward.
  • a folding finger that is rounded at the front or that at the front a folding roll, which represents the action of the folding finger, can also be provided to attach a pneumatic or hydraulic cylinder to the machine Piston can be moved towards the processing station and can be withdrawn from it. If then at the front free end of the piston the guide mentioned is attached, you can Move the folding roll towards the processing station and pull it back.
  • the respective folding roll can again be special without dead times act directly and over short distances.
  • the same advantages occur as above mentioned can be achieved with the folding elements.
  • the folding elements designed as folding fingers can be swung out, and the folding elements with the rotatably mounted folding roller on Front actors can cross to the direction of movement of the hose and across to The hose is pushed directly into engagement with it and pulled back again.
  • the distance between the ends of the folding elements from each other a) in the expanded state is larger than the diameter D of the Hose and b) in the collapsed state is smaller than the width B in the essential planes, the side wall which is folded in at an angle in cross section Side wall of the folded hose.
  • This adjacent sidewall has been protruding in a special embodiment of a cuboid pack as the narrow side wall designated, while the substantially flat other side wall the large, wide Was sidewall.
  • the width B is measured on the essentially flat side wall, because this specifies the so-called width of the later pack.
  • the folding elements take up in Cross section of the hose diametrically opposite sides in the middle of the side walls on. It is the cuboid 1 liter milk pack of the ones considered above Embodiment around the narrow side walls.
  • the folding elements touch the others wide side walls of the packaging. By intervening in the opposite one narrow side walls, the movement of the folding elements runs in approximately one plane, which is approximately parallel to the plane of the two substantially flat wide side walls lies.
  • the empty tube is first formed by longitudinal sealing and receives an im essential round cross-section with an overlapping longitudinal seal seam.
  • the direction of transport seen protruding upstream from the device for producing the longitudinal sealed seam
  • Filling tube devices in the hose that are just before the form rollers or even between these protrude.
  • the form rollers and also the rotation or swivel axes of the folding elements are upstream and vertical in the simplified embodiment considered here over the cross sealing unit, which is the intermittent transport of the packaging material hose concerned.
  • the print mark In the start-up phase, the print mark must be positioned at any height with the print mark incorrectly positioned Insert the inserted tube at the bottom with a cross seal so that it becomes tight and sterilized can be.
  • the folding elements are immediately switched on and by the movement of the Cross sealing unit one cross sealing seam after the other through a narrowly folded, pillow-shaped or shingle-shaped pack that does not fit in with the folding flaps Have come into contact. After a few strokes, this can sometimes take two strokes sufficient, the print mark is in the correct position. In other words they are Embossing lines in the correct position for the cross sealing unit, for example for the knife. Then is the hose to the processing station, i.e. the cross sealing unit, set correctly.
  • the Sensor recognizes this by the print mark and emits a signal which, on the one hand, is the separate one Turns on drives for the folding elements, so that these in the extended state be pivoted or moved, and at the same time the product feed is switched on, so the product acting inside the hose against folding and gripping forces from the outside certain counterforces developed by which the folding and shaping of the later filled pack can be facilitated and improved.
  • a tube 1 Packs 2 of a packaging material with plastic coated on both sides Paper.
  • the pack 2 shown in perspective in FIG. 3 after filling and shaping has one Longitudinal sealing seam 3, a transverse sealing seam 5 in the bottom 4 and a transverse sealing seam in the upper bottom 6 7.
  • the front wide side wall 8 is an invisible rear wide side wall opposite, and the same applies to the left narrow side wall 9.
  • To the respective Basic folding line 10 can each be folded over a triangular flap 11, which is shown in the illustration 3 is not yet folded over, but in the plane of the bottom 4 or the top wall 6 protrudes horizontally.
  • the folding in particular of the bottom 4 and top wall 6 of the pack 2 from the packaging material tube 1 with a circular cross section upstream in FIG. 1 is essentially carried out by the transverse sealing unit 12 is generally shown in Figure 1.
  • Figure 1 These are schematized in a frame 13 Cross sealing jaws 14 indicated, between which a knife, not shown, for Cutting the hose 1 can act.
  • the top of the frame 13 are about pivot axes 15 pivotable folding flaps 16 arranged, their engagement position (in the current Normal operation) is shown in Figure 1 with solid lines, while the swung up Position is dash-dotted.
  • a correction device 17 is on the right of the frame 13 of the transverse sealing unit 12 fastens and controls the folding flaps 16, i.e. with this Correction device 17 can move the movement of the Folding flaps 16 can be lengthened or shortened. This can add more or less material the intermittent movement of the hose 1 in the conveying direction 18 are advanced.
  • a folding finger without its holder and its drive in perspective in FIG. 8 is shown.
  • On the machine stand 20 is diametrical with respect to the hose 1 opposite sides each attached a bracket 21, on which on the side a holder 22 and a side wall towards the folding finger 19 and thus also towards the hose 1 23 are attached.
  • the latter carries the swivel axis 24 around which the curved, rod-shaped, elongated folding fingers 19 is pivotally articulated on the side wall 23.
  • a web 26 is welded to the side facing away from the hose 1.
  • a tension spring 27 is held, the other end of which is also on the Side wall 23 is attached.
  • a guide 28 is fixed to this web 26 creates a connection with a pneumatic cylinder 30 via a piston rod 29. This can counter the folding finger 19 from the extended position shown in Figure 4 pivot the force of the tension spring 27 into the retracted position shown in FIG.
  • the tension spring 27 brings the folding finger 19 back to its extended resting position.
  • the pivot axis 15 of the folding flap 16 is parallel to the pivot axis 24 of the bearing 31 of the Folding finger 19. Also parallel to the pivot axis 24 of the folding finger 19 is upstream about the respective folding finger 19, the axis of rotation 32 of the form roller 33.
  • Their shape and The supporting function can best be seen from the cross-sectional illustration in FIG. 2.
  • the packaging material web 34 is on the left, i.e. the flat folded hose 1, each blank having the length L, starting from the cutting line 35 over the Embossing lines 36 on the top floor, the height H of the actual pack up to the embossing lines 37 of the floor to the section line 38; this for each cut.
  • the longitudinal seal seam 3 extends, and each blank bears a print mark 39.
  • the one in FIG. 9 is on the right shown web 40 of the flattened hose 1, the conveying direction by the arrow 18th shown and directed vertically downwards.
  • the right lane 40 is in shorter sections of the Length I divided, which is the stroke with which the cross sealing unit 12 the hose 1 are moved intermittently in the conveying direction 18. While the length L of the actual cutting extends from a cutting line 35 to the next cutting line 38 the length 1 shorter and therefore smaller than L.
  • This piece grows from section to section Section, as can be seen from the right-hand lane 40 of FIG. 9, when looking at the printing marks 39 on the right with respect to the cutting lines 35, 41.
  • the distance is the Print mark 39 from the cutting line 35 in the section broken off above from the short Length c, while in the penultimate section the distance is d (double arrow).
  • Print mark 39 can slide very quickly where it is to the cross seal unit 12 correctly is positioned.
  • the correct positioning of the print mark 39 will be the folding fingers 19, the act 25 according to Figure 1 in the retracted state Have a distance apart in the direction of the force of the tension spring 27. This eliminates the central folding of the narrow side wall illustrated in FIG.
  • this side wall is elongated by folding the folding finger 19 into two Stripes 9a and 9b divided.
  • the strip 9a of the adjacent side wall 9 forms the other Leg of the angle ⁇ .
  • Figure 10 is similar in construction to Figure 5.
  • the rounded end 25 shown in Figure 5 is in the embodiment of FIG. 10, however, configured differently.
  • a folding roller 42 is freely rotatable about an axis of rotation 43.
  • the folding finger 19 is controlled in the manner described above.
  • the folding roller 42 comes instead of the rounded end 25 with the hose 1 in Contact.
  • FIG. 11 finally shows an embodiment modified compared to FIG which is provided on the guide 28 front left again the folding roller 42 freely rotatable.
  • the axis of rotation 43 runs parallel to the pivot axis 15 which is not shown in FIG Folding flap 16.
  • a look at Figure 1 immediately shows the assignment of the parts and the direction of the Recognize axes.
  • the axis of rotation 43 is perpendicular to FIG. 11 Paper plane (as in Figure 10 axes 43 and 24).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Claims (10)

  1. Appareillage pour disposer un tube (1) en un matériau d'emballage sur un poste de travail (12) d'une machine à emballer, dans lequel, à partir d'une bande (34) d'un matériau d'emballage, imprimée et pourvue de lignes de marquage (36, 37), on forme un tube (1) ayant une section transversale circulaire, on l'obture grâce à des joints thermoscellés longitudinaux (3), on le remplit et on lui donne sa forme dans une unité de thermoscellage transversale (12) et on le subdivise en emballages parallélépipédiques (2), l'unité de thermoscellage transversale (12) étant, pour assurer une avance intermittente du tube (1), réalisée avec une course (I) réglable, et étant, par rapport au tube 1, pourvue sur chacun de ses côtés diamétralement opposés d'un volet plieur (16), pouvant pivoter autour d'un axe de pivotement (15), un capteur étant disposé pour détecter une marque d'impression (39), caractérisé en ce qu'en amont de chaque volet plieur (16) est disposé un élément plieur (19, 42), mené et commandé par le capteur, élément plieur à l'aide duquel le tube (1) peut être replié sur une largeur (B) approximativement égale à la largeur (B) de l'emballage fini (2), de telle sorte que le tube (1) ne soit pas en prise avec les volets plieurs (16).
  2. Appareillage selon la revendication 1, caractérisé en ce que les éléments plieurs (19, 42) replient symétriquement le tube (1), de telle sorte que, dans la section transversale entre la paroi latérale (9a, 9b), repliée selon un certain angle, et la paroi latérale (8) voisine et plane, on obtienne un angle (α) d'environ 5 à environ 85°, de préférence d'environ 15 à environ 70° et tout particulièrement d'environ 30 à environ 60°.
  3. Appareillage selon la revendication 1 ou 2, caractérisé en ce que l'élément plieur (19) est un doigt plieur (19), de grande longueur et pouvant pivoter autour d'un axe de pivotement (24), doigt plieur qui est fixé à la machine et est disposé parallèlement à l'axe de pivotement (15) du volet plieur (16), et en ce que le doigt plieur (19) s'étend, à partir de son axe de pivotement (24), le long du tube (1) jusqu'à arriver devant l'unité de thermoscellage transversale (12) (Figures 1 - 8).
  4. Appareillage selon la revendication 3, caractérisé en ce qu'un galet formeur (33) est disposé en rotation libre en amont de l'axe de pivotement (24) de chaque élément plieur (19).
  5. Appareillage selon l'une des revendications 3 ou 4, caractérisé en ce que le doigt plieur (19) est, au niveau de son extrémité active (25), disposée en aval de l'axe de pivotement (24), arrondi au moins sur le côté dirigé vers le tube (1) (Figures 1-8).
  6. Appareillage selon l'une des revendications 3 ou 4, caractérisé en ce que le doigt plieur (19) porte, sur son extrémité active (25) disposée en aval de l'axe de pivotement (24), et au moins sur son côté dirigé vers le tube (1), un galet plieur (42) à rotation libre.
  7. Appareillage selon l'une des revendications 1 à 6, caractérisé en ce que chaque élément plieur (19, 42) possède son propre organe d'entraínement, pouvant être commandé séparément, de préférence un vérin à air comprimé (30) qui coopère avec un ressort de traction (27),
  8. Appareillage selon l'une des revendications 1, 2, 4 et 7, caractérisé en ce que l'élément plieur (42) est un galet plieur (42) logé en rotation sur un guidage (28), galet plieur dont l'axe de rotation (43) court parallèlement à l'axe de pivotement (15) du volet plieur (16), et en ce que le guidage (28) est entraíné de façon à pouvoir se déplacer vers l'avant et vers l'arrière perpendiculairement au tube (1) (Figure 11).
  9. Appareillage selon Tune des revendications 1 à 8, caractérisé en ce que la distance (a) entre les extrémités actives (25) des éléments plieurs (19, 42)
    a) à l'état écarté, est plus grande que le diamètre (D) du tube (1), et
    b) à l'état rapproché, est plus petite que la largeur (B) de la paroi latérale (8), essentiellement plane, voisine de la paroi latérale (9a, 9b), repliée avec une section transversale formant des angles, du tube replié (1).
  10. Appareillage selon l'une des revendications 1 à 9, caractérisé en ce que les éléments plieurs (19) entrent en prise, sur les côtés qui dans la section transversale du tube (1) sont diamétralement opposés, en position centrale avec les parois latérales (9).
EP99906125A 1999-01-14 1999-01-14 Dispositif permettant d'installer un boyau de matiere d'emballage a l'aide d'un repere imprime Expired - Lifetime EP1140632B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1999/000177 WO2000041932A1 (fr) 1999-01-14 1999-01-14 Dispositif permettant d'installer un boyau de matiere d'emballage a l'aide d'un repere imprime

Publications (2)

Publication Number Publication Date
EP1140632A1 EP1140632A1 (fr) 2001-10-10
EP1140632B1 true EP1140632B1 (fr) 2003-05-07

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Country Status (7)

Country Link
US (1) US6526733B1 (fr)
EP (1) EP1140632B1 (fr)
JP (1) JP4301481B2 (fr)
AU (1) AU2617299A (fr)
DE (1) DE59905510D1 (fr)
ES (1) ES2193686T3 (fr)
WO (1) WO2000041932A1 (fr)

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EP2662291B1 (fr) * 2012-05-11 2014-10-15 Tetra Laval Holdings & Finance S.A. Unité d'emballage et procédé pour produire des emballages scellés
PL3310666T3 (pl) * 2015-06-22 2020-07-13 Société des Produits Nestlé S.A. Maszyna pakująca
EP3241770B1 (fr) * 2016-05-06 2019-02-27 Tetra Laval Holdings & Finance S.A. Unité d'emballage pour production d'emballages étanches contenant un produit alimentaire versable à partir d'un tube de matériau d'emballage
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CN108622445B (zh) 2017-03-23 2021-07-16 利乐拉瓦尔集团及财务有限公司 引导装置
JP7436836B2 (ja) * 2020-04-20 2024-02-22 シブヤパッケージングシステム株式会社 包装体製造装置
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Also Published As

Publication number Publication date
EP1140632A1 (fr) 2001-10-10
DE59905510D1 (de) 2003-06-12
JP2002534333A (ja) 2002-10-15
JP4301481B2 (ja) 2009-07-22
ES2193686T3 (es) 2003-11-01
WO2000041932A1 (fr) 2000-07-20
US6526733B1 (en) 2003-03-04
AU2617299A (en) 2000-08-01

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