EP1972562B1 - Verfahren zur Befestigung eines Kunststoffgriffs auf einer metallischen Verpackung - Google Patents

Verfahren zur Befestigung eines Kunststoffgriffs auf einer metallischen Verpackung Download PDF

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Publication number
EP1972562B1
EP1972562B1 EP08290189A EP08290189A EP1972562B1 EP 1972562 B1 EP1972562 B1 EP 1972562B1 EP 08290189 A EP08290189 A EP 08290189A EP 08290189 A EP08290189 A EP 08290189A EP 1972562 B1 EP1972562 B1 EP 1972562B1
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EP
European Patent Office
Prior art keywords
ribbon
bending device
walls
packing
fixing
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Active
Application number
EP08290189A
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English (en)
French (fr)
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EP1972562A1 (de
Inventor
Robert Malinie
Grégory Geisse
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.)
Sabatier SAS
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Sabatier SAS
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    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/14—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for incorporating, or forming and incorporating, handles or suspension means in packages

Definitions

  • the present invention relates to the field of manufacturing cylindrical and / or cylindro-conical metal containers and packages.
  • Such containers and packaging are used in industry in many formats for the packaging of food products or industrial products such as paints, oils, solvents and various chemical products or others.
  • the invention more particularly relates to a method of fixing loops of plastic material on metal packages of the aforementioned type and a device adapted to the implementation of this method.
  • the first technique is to weld at first on the cans two lugs or rivets in two diametrically opposite positions on the walls of the can and located just below the opening and to mount, manually or automatically, the handles of material molded plastic on the rivets / lugs of pre-equipped cans.
  • This first technique has the major disadvantage of being very expensive, whether in terms of manpower or industrial tools for molding and installation of handles.
  • the automatic manipulation of molded handles is difficult to implement, especially when it is necessary to work on several sizes of cans.
  • the production rates according to this technique are very low, and in practice almost incompatible with constraints of industrial productivity.
  • a second technique for attaching plastic handles to metal cans is to automatically unroll a plastic tape from a roll of a very long length of said tape, to cut a piece of determined length of ribbon and fix the ends of the piece of tape thus cut by riveting at two opposite points on the walls of the cans, the latter being moved step by step on a transfer table.
  • This technique has the advantage over the first to be automated and allow industrial work rates of up to 50 cans per minute equipped with a loop.
  • the present invention aims to provide a method of fixing loops of plastic material on cans and metal packaging that does not suffer the disadvantages of existing techniques.
  • the invention aims to provide a method of fixing plastic handles on metal packaging of various shapes and complex, including packaging with tulips, without loss of fixation quality and productivity.
  • Another object of the invention is to provide a method of fixing loops of plastic material on metal packages which allows to achieve production rates higher than current techniques.
  • this method is characterized in that between steps b) and c) said strip portion is bent in a substantially horizontal plane by means of a bending device equipped with movable jaws and oriented relative to the walls of said package by moving said bending device.
  • the loop attachment method according to the invention has the major advantage of allowing an automated installation of handles on all types and sizes of metal cans, including tulip cans.
  • the orientation and the positioning in a substantially horizontal plane of the plastic tape intended to form the handle of the can makes it possible to pass the ends of said ribbon and to press them exactly tangentially against the walls of the packagings to be fitted. , possibly passing under the base of the tulip of the package, to perform the welding of the rivets on the walls of the package and fixing the ends of the tape to said walls.
  • tulip a conical or frustoconical flare made at the opening of a package and generally obtained by mechanical expansion of the metal walls of the package so as to give the opening a larger dimension (diameter or width) than the rest of the package.
  • the method of the invention also makes it possible to achieve much higher work rates than known methods and implemented up to then, and can in some cases go up to 75 packages equipped per minute.
  • a first preferred characteristic of the process of the invention consists in unrolling, in step a), a length L determined from a strip of plastic material to select and form said ribbon portion intended to form a loop, then to machine this length of tape in step b) before cutting and to proceed to the formation of the loop and its attachment to the package in step c).
  • step b) comprises a pre-cutting phase of the ends of said ribbon portion simultaneously with the perforation of said ends.
  • This pre-cutting phase of the ends of the plastic tape makes it possible to weaken, by punching and withdrawal of material simultaneously with that providing the perforations of the ends before effective cutting of the ribbon to form a loop, said ends in order to save time and energy on cutting operations.
  • step c) is distributed between steps b) and c) and is positioned a said fixing means in each of the perforated holes at the ends of said portion of ribbon, before proceeding to the step c).
  • fastening elements for example rivets, lugs or cabochons
  • the establishment of the fastening elements, for example rivets, lugs or cabochons, in the perforations at the ends of the ribbon intended to form the handle when said ribbon is still straight before cutting, bending and fixing said ribbon on the packaging allows greater simplicity, speed and accuracy of operation than when making this bet in place fastening elements on already curved handles, simultaneously with the welding of said fasteners on the packaging.
  • the method of the invention preferably provides that one moves linearly said ribbon portion in a straight die and in a substantially horizontal plane until supported by said bending device.
  • the ribbon is moved linearly on the same table between different workstations (selection of the ribbon portion, perforation and pre-cut, setting of fasteners, cutting) of a dedicated machine, and these are the means unwinding and advancing the plastic tape that pushes the tape to the cutting station and the point of support by the bending device.
  • said bending device is moved in step c) in a direction perpendicular to the linear direction of movement of the ribbon and in the same substantially horizontal plane.
  • step c) it is also possible, also in step c), to move said package vertically on a mobile table to position it precisely with respect to the ends of the ribbon placed in said bending device before welding of said fastening elements.
  • the method of the invention is particularly advantageous in that it allows the attachment of a loop of plastic material on a tulip package; the ends of the ribbon portion intended to form the loop being positioned before welding in two opposite positions against the walls of said package under the base of said tulip by substantially horizontal displacement of said bending device which avoids the tulip.
  • the figure 1 represents a machine for preparing and fixing plastic handles A on metal cans B in a preferred embodiment adapted to the implementation of the method object of the present invention.
  • This machine makes it possible to form and fix plastic loops A on drums B, automatically, from a strip 1 of plastic material rolled out as and when the loops A are formed and fastened. on cans B from a motorized roller 2 carrying a very large length of tape 1, in particular, several tens of meters.
  • the machine of the figure 1 comprises, in the first place, a position 3 unwinding and advancing the ribbon 1 of plastic material in the machine.
  • the unwinding station 3 has the function of advancing said ribbon 1 stepwise by a length L between the various workstations 3, 4, 5, 6, 7 of the machine and this according to a constant frequency set according to the desired production rate.
  • the length L of displacement of the ribbon depends on the size of the metal packages, in the example shown in the figures of the cylindrical containers B, and it corresponds to the length of a portion of ribbon 1 necessary to form a loop A which can be fixed on said drums B.
  • This length L is, therefore, variable and the unrolling station 3 comprises means adapted to be adjusted to cause said ribbon 1 from the roller 2 and to advance step by step to positions 3, 4, 5, 6, 7 of the machine exactly one length L chosen.
  • Said unwinding station 3 comprises two motorized wheels 31, 32, associated with jacks 31 ', 32', pinching the ribbon 1 against the wheels 31, 32, which cause the ribbon 1 and advance it step by step, exactly d a length L corresponding to the length of the handles to be formed and fixed on the drums B, at the exact rate of manufacture and fixing of a said handle on the drums B by the machine.
  • the unwinding device 3 comprises a loop drive guide 33 disposed between the motorized wheels 31,32.
  • This guide 33 is adapted to soften and stretch the ribbon 1 after exiting the roller 2 before undergoing the various treatment steps until formation and attachment of the loops.
  • Said guide 33 thus provides between the wheels 31, 32 a ribbon loop 1 of a length at least equal to twice the length L of tape required for the formation of a loop.
  • said wheel 32 advances step by step, at the appropriate speed, a so-called length L of tape 1 in a guide die, not shown, in a straight line to the next station of the machine, which is the punching station 4.
  • Said punching station 4 comprises a motor 41 for actuating a punch 42 shaped to produce, in a single operation, two contiguous orifices, spaced from each other by about 1 to 2 cm, in the ribbon 1 of plastic material advanced from the unfolding station 3. Simultaneously with the perforation of the orifices, the punch 42 also performs a removal of material on either side of the holes perforated in the ribbon 1, thus creating a demarcation of the ends of two future handles, as shown in detail 1.
  • pre-cutting of the ribbon 1 is also performed by weakening the area between the two orifices perforated by the punch 42.
  • the ribbon 1 is then advanced again by a length L by the uncoiling device 3.
  • the previously punched portion 3 is then presented and positioned at the next preparation station which is the position 5 for inserting the loops of attachment loops in holes just punched.
  • This station 5 comprises a cabochon feeding device, allowing the simultaneous insertion of a cabochon in each of the perforated orifices in the preliminary punching step of the ribbon 1.
  • This insertion device comprises a vibratory bowl 51 containing a multitude said loose cabochons which, under the effect of the vibrations of said bowl 51 slide in chutes 52, 53 distribution cabochons.
  • These troughs 52, 53 open near the running die of the ribbon 1.
  • the movable jacks 54 are actuated to position two said cabochons facing the ends of two rods of an insertion fork 55, associated with a cylinder 56.
  • the actuation of said cylinder 56 causes the advance of said fork 55 and, therefore, the insertion of two cabochons in the orifices previously punched.
  • optical control means 57 opposite said fork on the other side of the ribbon 1 verify the correct positioning of the cabochons in the orifices.
  • the ribbon 1 is, again, advanced a length L.
  • the ribbon portion 1 pierced and provided with cabochons is then positioned at the cutting station 6.
  • This cutting station 6 comprises two blades 61 actuated by a jack 62 to perform the final cut of the ribbon 1 and form one by one the handles A to be fixed on the containers B.
  • the blades 61 of the cutting tool are actuated by the cylinder 62 so as to cut the ribbon 1 exactly between the two cabochons previously inserted in the holes perforated in the ribbon, at the pre-cutting achieved during the punching station 4.
  • the ribbon 1 is again advanced by a length L.
  • the ribbon portion A located downstream of the cutting station 6, of length L, which has just been cut is then pushed and positioned facing a device 8, disposed above the transfer table TB of the metal containers B on which the loops, formed from the portions A cut ribbon, must be fixed, said packs advancing in a direction perpendicular to the direction of travel of the ribbon 1 between the different positions of the machine.
  • the portion of tape A that has just been cut, is then positioned in the bending device 7, and then fixed at its ends to a cylindrical metal drum B, as described below in FIGS. FIGS. 2A to 2C .
  • the portion of ribbon A is, as shown in FIG. Figure 2B positioned between the jaws 71 of the bending device 7, via a movable arm 8 which pushes said portion of ribbon A by its middle in the jaws 71 of the bending device 7.
  • Said jaws 71 extend into a horizontal plane above the TB transfer table cans and parallel thereto. They have an arcuate shape, substantially hemispherical, for bending the portion of ribbon A before attachment to the bottle B located below the jaws 71 of the bending device 7.
  • the positioning arm 8 is then retracted to its starting position and the bending device 7 is slightly tilted, as shown in FIG. figure 3 around an axis 72 by cylinders 73 so as to position the ends of the portion of ribbon A which will form a loop, kept bent between the jaws 71, against the side walls of a can B to which must be fixed handle, under the level of the opening of said can to allow, if the can B has a tulip at its opening, the passage of the handle A under the base of the tulip and the fixing of the ends of the handle under this base of the tulip.
  • the jaws 71 have the ends of the ribbon portion A, provided with their cabochons, against the walls of the bottle B located just below on the transfer table TB, a few centimeters below. the upper opening of said package B on which the handle must be fixed.
  • This displacement down the jaws 71 of the bending device 7 advantageously allows to pass, if necessary, the ends of the ribbon portion A equipped with cabochons under the tulip of the bottle B to equip a handle, which facilitates fixing said ends on the bottle B when said can comprises a tulip at its opening.
  • the fixing of the loop can then be performed. It is effected by means of a fixing device essentially comprising electrodes and counter-welding electrodes 10a, 10b, which are pressed, as shown in FIG. Figure 2C the ends of the ribbon portion A bent in the jaws 81, against the walls of a can B, and solder the cabochons located at said ends.
  • the electrodes and counter-electrodes 10a, 10b are removed and the bending device 7 is straightened.
  • the can B, on which has just been welded the handle A, is then advanced in the direction of the arrow F on the transfer table TB, and a new can B to be equipped with a handle is moved under the device of bending 7 to be in turn equipped with a loop A.
  • the machine for preparing and fixing plastic handles comprises a bending device 7 'modified which is horizontally movable above the transfer table TB cans B, which further comprises an elevation plate 9 movable vertically.
  • This embodiment of the machine with plastic handles makes it possible to implement the method of the invention in an optimized manner, in particular by allowing attachment of the handles A on cans B to the nearest walls of the cans B, with a very small gap of the loop A relative to the walls, of the order of 5 to 15 millimeters at most.
  • the bending device 7 ' has the general shape of a U whose ends of the branches form jaws 71' shaped to fit the cylindrical shape of the containers B. Between the two jaws 71 'is placed a horizontally movable arm 8' which co-operates with the bending device 7 'to bend the ribbon portions A after cutting at the station 6 and position them relative to the can B on which they must be fixed. The other positions of the machine remain for their part substantially identical in their structure.
  • the shaping and fixing of the handles is carried out as shown in FIGS. FIGS. 5A to 5C and 6 .
  • said ribbon portion A is positioned facing the jaws 71 'and the arm 8'.
  • the elevation plate 9 of the transfer table TB of the drums is then actuated so as to lift a container on which the portion of ribbon A must be fixed to form a handle.
  • the jaws 71 'and the arm 8' are moved horizontally so as to cause the ribbon portion A and press against the can B, the latter then being between the jaws 71 'of the bending device 7' .
  • the electrodes and counter electrodes 10a, 10b are then positioned to weld on the bottle B cabochons placed at the ends of the band A while it is pressed against the can for the bending device 7 'and the arm 8'.
  • the distance of movement of the ribbon 1 between each station is exactly the length L necessary for the manufacture of a loop.
  • this displacement length is in no way limiting to the scope of the method of the invention and it will of course be possible to adjust a distance of movement between stations that is greater or less than the length L of the loops, depending on the compactness of the machine and the respective position of the different stations, as well as the desired production rate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Making Paper Articles (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Table Devices Or Equipment (AREA)

Claims (12)

  1. Verfahren für die Befestigung eines Griffs (A) aus Kunststoff auf einer Metallverpackung (B), die bevorzugt deutlich zylindrisch oder kegelförmig ist, das folgende Schritte umfaßt:
    a) Man wählt einen Abschnitt eines Bandes (1) aus Kunststoff in angemessener Länge, um einen Griff (A) einer besagten Verpackung zu bilden;
    b) Man perforiert die Enden des besagten Bandabschnitts mit mindestens einer Öffnung, die geeignet ist, ein Befestigungsmittel der besagten Enden auf den Wänden der besagten Verpackung aufzunehmen;
    c) Man schweißt ein Befestigungsmittel in die in jedes der besagten Enden des Bandabschnitts perforierte Öffnung an zwei entgegengesetzten Stellen auf den Wänden der besagten Verpackung, um sie fest an den besagten Wänden zu befestigen und somit einen Griff zu bilden,
    dadurch gekennzeichnet, daß man zwischen den Schritten b) und c) den besagten Bandabschnitt in einer deutlich waagrechten Ebene mit Hilfe einer Biegevorrichtung (7) biegt, die mit mobilen Spannbacken (71) ausgerüstet ist, und daß man sie im Verhältnis zu den Wänden der besagten Verpackung durch Verschiebung der besagten Biegevorrichtung richtet.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man bei Schritt a) eine bestimmte Länge L von einem Band (1) aus Kunststoff ausrollt, um den besagten Bandabschnitt zu bilden, der einen Griff bilden soll.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Schritt b) eine Stanzung der Enden des besagten Bandabschnitts (1) gleichzeitig mit der Perforierung seiner besagten Enden umfaßt.
  4. Verfahren nach einem beliebigen der vorstehenden Ansprüche 1 bis 3, dadurch gekennzeichnet, daß man zwischen den Schritten b) und c) ein besagtes Befestigungsmittel in jede der Öffnungen an den Enden des besagten Bandabschnitts (1) verteilt und positioniert, bevor man zum Schritt c) übergeht.
  5. Verfahren nach einem beliebigen der vorstehenden Ansprüche 1 bis 4, dadurch gekennzeichnet, daß man den besagten Bandabschnitt zwischen den Schritten b) und c) stanzt, bevor man ihn mit Hilfe der Biegevorrichtung (7) biegt und richtet.
  6. Verfahren nach einem beliebigen der vorstehenden Ansprüche 1 bis 5, dadurch gekennzeichnet, daß man den besagten Bandabschnitt linear in einer geraden Richtung und in einer deutlich waagrechten Ebene bis zu seiner Aufnahme durch die besagte Biegevorrichtung (7) verschiebt.
  7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß man den besagten Bandabschnitt in den Spannbacken (71) der Biegevorrichtung (7) vermittels eines Arms (8) positioniert, der waagrecht in einer Richtung senkrecht zu derjenigen des besagten Bandabschnitts nach dem Stanzen mobil ist.
  8. Verfahren nach einem beliebigen der vorstehenden Ansprüche 1 bis 7, dadurch gekennzeichnet, daß man den besagten Bandabschnitt im Verhältnis zu den Wänden der besagten Verpackung durch Drehen der besagten Biegevorrichtung so richtet, daß die Enden des besagten Bandabschnitts, der in den Spannbacken (71) der besagten Biegevorrichtung (7) gehalten wird, unter der Ebene der Öffnung der besagten Verpackung positioniert werden.
  9. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß man bei Schritt c) die besagte Biegevorrichtung (7) in einer Richtung senkrecht zur linearen Verschiebungsrichtung des besagten Bandabschnitts und auf der gleichen Ebene deutlich waagrecht verschiebt.
  10. Verfahren nach einem beliebigen der vorstehenden Ansprüche 1 bis 6 und nach Anspruch 9, dadurch gekennzeichnet, daß man bei Schritt c) die besagte Verpackung auf einem mobilen Tisch senkrecht verschiebt, um sie im Verhältnis zu den besagten Enden des besagten Bandabschnitts in der besagten Biegevorrichtung (7) vor dem Schweißen der besagten Befestigungselemente zu positionieren.
  11. Verfahren nach einem beliebigen der vorstehenden Ansprüche 1 bis 8 oder einem beliebigen der vorstehenden Ansprüche 9 oder 10, dadurch gekennzeichnet, daß man den besagten Bandabschnitt mit Hilfe der besagten Biegevorrichtung (7) vor dem Schweißen der besagten Befestigungselemente gegen die Wände der besagten Verpackung drückt.
  12. Verfahren nach einem beliebigen der vorstehenden Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die besagte Verpackung ein tulpenfömiger Kanister (B) ist, und daß die besagten Enden des besagten Bandabschnitts vor dem Schweißen in zwei entgegengesetzten Positionen an den Wänden der besagten Verpackung unter der Basis der besagten Tulpe durch Verschiebung der besagten Biegevorrichtung (7) positioniert werden.
EP08290189A 2007-03-21 2008-02-28 Verfahren zur Befestigung eines Kunststoffgriffs auf einer metallischen Verpackung Active EP1972562B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0753946A FR2913953B1 (fr) 2007-03-21 2007-03-21 Procede de fixation d'une anse de matiere plastique sur un emballage metallique

Publications (2)

Publication Number Publication Date
EP1972562A1 EP1972562A1 (de) 2008-09-24
EP1972562B1 true EP1972562B1 (de) 2010-09-29

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Application Number Title Priority Date Filing Date
EP08290189A Active EP1972562B1 (de) 2007-03-21 2008-02-28 Verfahren zur Befestigung eines Kunststoffgriffs auf einer metallischen Verpackung

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EP (1) EP1972562B1 (de)
AT (1) ATE482883T1 (de)
DE (1) DE602008002780D1 (de)
ES (1) ES2353353T3 (de)
FR (1) FR2913953B1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3600489A1 (de) * 1986-01-10 1987-07-16 Henkel Kgaa Kindergesicherter verschluss einer tragepackung
GB2244972A (en) * 1990-06-12 1991-12-18 Lin Pac Mouldings Container with pivotally mounted handle
US7219789B2 (en) * 2004-08-02 2007-05-22 Berry Plastics Corporation Bailing apparatus with handle orienter
US7445110B2 (en) * 2004-11-19 2008-11-04 Berry Plastics Corporation Bailing apparatus with handle return device

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Publication number Publication date
FR2913953B1 (fr) 2009-05-29
FR2913953A1 (fr) 2008-09-26
EP1972562A1 (de) 2008-09-24
DE602008002780D1 (de) 2010-11-11
ES2353353T3 (es) 2011-03-01
ATE482883T1 (de) 2010-10-15

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