EP1379457B1 - Verfahren zum rüsten einer einwickelmaschine mit folie, und einwickelmaschine zur durchführung des verfahrens - Google Patents

Verfahren zum rüsten einer einwickelmaschine mit folie, und einwickelmaschine zur durchführung des verfahrens Download PDF

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Publication number
EP1379457B1
EP1379457B1 EP02722388A EP02722388A EP1379457B1 EP 1379457 B1 EP1379457 B1 EP 1379457B1 EP 02722388 A EP02722388 A EP 02722388A EP 02722388 A EP02722388 A EP 02722388A EP 1379457 B1 EP1379457 B1 EP 1379457B1
Authority
EP
European Patent Office
Prior art keywords
film
reel
injecting
rollers
cutting
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
EP02722388A
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English (en)
French (fr)
Other versions
EP1379457A1 (de
Inventor
Laurent Mace
François GOSSET
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.)
Sidel Packing Solutions SAS
Original Assignee
Cermex Ouest Conditionnement SAS
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 Cermex Ouest Conditionnement SAS filed Critical Cermex Ouest Conditionnement SAS
Publication of EP1379457A1 publication Critical patent/EP1379457A1/de
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Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
    • B65H19/1857—Support arrangement of web rolls
    • B65H19/1873—Support arrangement of web rolls with two stationary roll supports carrying alternately the replacement and the expiring roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
    • B65H19/1842—Attaching, e.g. pasting, the replacement web to the expiring web standing splicing, i.e. the expiring web being stationary during splicing contact
    • B65H19/1852—Attaching, e.g. pasting, the replacement web to the expiring web standing splicing, i.e. the expiring web being stationary during splicing contact taking place at a distance from the replacement roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/461—Processing webs in splicing process
    • B65H2301/4611—Processing webs in splicing process before splicing
    • B65H2301/46115—Processing webs in splicing process before splicing by bringing leading edge to splicing station, e.g. by chain or belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/463—Splicing splicing means, i.e. means by which a web end is bound to another web end
    • B65H2301/4636—None, i.e. simply feeding both webs simultaneously or sequentially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/175—Plastic
    • B65H2701/1752—Polymer film
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/81—Packaging machines

Definitions

  • the invention relates to process improvements for refilling machines for the production of plastic film packaging, also called wrapping machines or wrappers, using such films. It relates more particularly to a method for fast loading of the film, and machines implementing this method.
  • Film wrapping of products is a widespread technique, which makes it possible to group together several products, such as bottles, flasks, boxes, jars, or any other type of objects. This technique makes it easier to transport the products to a final destination where the package is removed.
  • the film is the only element of the packaging, or it is associated with ancillary elements, such as plates, trays or other on which the products are arranged before being filmed .
  • the machines intended for the constitution of such packages are called shrinkwrappers. They make it possible to surround each group of products with a section of film.
  • they comprise, on the one hand, a device for feeding the groups of products to be packaged, such as a conveyor, and, if necessary, a device for feeding the ancillary elements, and on the other hand a reel.
  • film dispenser a device for directing each group of products to pack a first end of the film, film placing devices around the product group in synchronism with the film advance, film cutting devices film when a stretch of sufficient length is obtained and devices for closing the film around the product group.
  • the film used is heat-shrinkable, and the closure is effected by clamping the film in a heat-shrink tunnel of the film.
  • the closure is achieved by heat sealing or gluing.
  • the device for directing a first end of the film towards the group of products to be packaged also called film injection device, comprises, for example, drive rollers between which the film is disposed, and downstream of these rollers, in the direction of advance of the film, a gripping member.
  • the film, driven between the rollers, is then grasped by the gripping member which directs it towards a conveyor or a table on which the product group is located, and which makes the film undergo a movement allowing it to surround the group. of products.
  • the film is cut, so that a section of film is completely available to package the product group, and the rest of the film can be used to package the following product groups by repeating the operations mentioned.
  • the cutting means are associated with the injection device.
  • the latter comprises, a first arrangement, said upstream, two rollers in tangential contact with each other, one of the rollers being a coach, the other driven, and a second arrangement, said downstream identical to the first, two other rollers also in tangential contact, with a driving roller and a driven roller, and the cutting means are arranged between the two arrangements.
  • the film is arranged to pass between the two rollers of each arrangement, and is driven by the pressure exerted between the two rollers of the same arrangement.
  • the cutting means are activated at the appropriate moments, in synchronism with the cycle of the machine.
  • the machines require that the film dispensing reel be regularly replaced, when the entire available length of the film has been consumed.
  • the machines comprise a device for storing a full dispensing reel on which said reel is put in place while another reel is unwinding, and the distributor reel change involves stop the packing operations, and heat up the beginning of the film of that full reel with the end of the film of the reel that ends.
  • thermosouder the beginning end of the film of the full distributor coil with that of the end of the film of the previous coil that consumes the most time .
  • this operation saves time compared to that which consists of letting go all the previous film before reloading the machine with a new distributor coil.
  • a compensating mechanism with an arrangement of compensating rollers, mounted on an articulated device, called a puppet, which makes it possible to adjust the tension and the speed of travel of the film to take into account that the packaging operations are not carried out at constant speed of scrolling of the film.
  • This mechanism thanks to its rollers, makes the film a relatively complex path, and in any case not linear, between the distributor coil and the injection device, so that if it were necessary to let the entire film go, then, at the time of reloading, it would be necessary to position the new film correctly with respect to the arrangement of compensating rollers, then to engage it in the injection device by stalling it correctly to prevent it from getting wrinkled or shifted laterally from the latter . These operations would be even longer to achieve.
  • the known machines comprise means for detecting the approach of the end of the film on the distributing reel being unwound, which determine the remaining length of film on this reel and trigger when it becomes less than a value. predetermined.
  • the means since it is difficult to detect a length of film wound on a reel, the means rather detect the remaining film thickness on the reel, which is a function of the remaining length.
  • These detection means can be coupled to means to warn the operator, who, from the moment he is warned, takes manual control of the machine, and monitors the unwinding of the end of the distributor coil, then stops the machine. machine at the appropriate time and performs the heat sealing operation, before restarting the machine and then removing the empty spool and putting a full one on hold.
  • This mode of operation if the operator is absent at the time of the warning, there is a risk that the reel will unwind completely and that the film will come off completely, involving fully reloading the machine with the new film. that is, positioning it correctly with respect to the arrangement of the compensating rollers and then engaging it again in the injection device.
  • the detection means can be coupled to means for stopping the film. This assumes that the operator resumes manual control of the machine after stopping the film, then monitors the unwinding of the end of the distributor coil, and stops the machine at the appropriate time to perform the heat sealing operation, before reviving the machine then remove the empty reel and put a full one on hold. With this mode of operation, if the operator is absent at the time of shutdown, the risk is an additional loss of time.
  • the object of the invention is to remedy these drawbacks.
  • the entire film of the coil being dispensed is allowed to spin, and the predetermined position, which is detected, the end end of the film of this coil, in the machine is that where said end of film out of the injection and cutting means.
  • This implementation eliminates the welds from one film to another.
  • the method consists in monitoring the passage of the end end, of the film of the reel being dispensed, in the machine, in a predetermined position situated between the reel and the means of injection and cutting, and; when the passage in this position is reached, to stop the progression of the film of this coil in the injection and cutting means, so that there remains a remaining portion of film between said end end of the film and the means of injection and cutting, and to cause the drive, in the latter, the free end of the film connected to the full coil, so that it becomes a distributor; remove the empty spool and dispose a new full spool instead; to solder the beginning of the film of the full reel to the end of the remaining part of the film of the one that was removed.
  • this implementation requires only a masked welding, while a coil is unwinding. This leaves time for the operator to perform this operation with precision, even in the case of films with decorative patterns; moreover, the solder has time to cool properly and there is no more heavy and complex operation of repositioning the film, since the new is driven by a remaining part, waiting.
  • This procedure makes it possible to take into account the difficulty of measuring the remaining length of the film on a reel when it is unwound, while avoiding loss of film. It is easier to make an approximate determination of the remaining film length, for example, as indicated before, by evaluating the remaining film thickness wound on the reel. The evaluation can only be approximate, among other things because of machine vibrations and because there are certain tolerances on the thickness of the film itself during its manufacture.
  • the approximate evaluation of the remaining length of film wound on the reel being dispensed and the putting into service of the full reel can be carried out by the operator himself; however, to allow the operator to perform other actions and prevent the reel from fully unwinding in case the operator is absent, automatic evaluation and automatic change are preferred.
  • the monitoring of the passage from the upstream end to the end of the film of the reel being dispensed into the machine in the said predetermined position can be performed by the operator or automatically.
  • the machine comprising a compensation mechanism between each coil and the injection and cutting means, the predetermined position between the coil and the injection and cutting means is monitored so that the progression of a reel being dispensed is stopped when the end of the film carried by this reel is between the reel and the corresponding compensation mechanism. In this way, after the welding has been completed, the remaining portion of the film of a coil is used to engage the film of a new coil in the compensation mechanism.
  • a device for implementing the method is characterized in that it comprises two arrangements for alternately distributing the film of a coil and the other to the injection and cutting means, which arrangements comprise means, known as drive and holding, arranged to maintain at the input of the injection and cutting means the free end of the film of the coil in waiting, and to allow the driving of the film of the distributor coil in the means of injection and cutting.
  • the arrangements are identical.
  • the injection and cutting means consist of a single device comprising, at its inlet, film drive rollers, and the drive and holding means consist of two separate devices arranged upstream of the inlet of the single injection and cutting device, and the machine is arranged so that, after stopping the progression of the film of a coil being dispensed in the injection and cutting means, it is reverses the direction of progression of this film in said means, so as to disengage the free end of the beginning, and it is maintained with the corresponding device for training and maintenance, then leads the free end , at the beginning of the film waiting, towards the means of injection and cutting with the other corresponding device for training and maintenance.
  • the injection and cutting means are constituted by two separate devices which each receive the film of a reel, and each comprise, at their entry, rollers for driving the film
  • the drive and holding means are constituted by the drive rollers, located at the inlet of the injection and cutting devices, and the machine is arranged so that the progression of the film of a reel being dispensed in an injection and cutting device is stopped by stopping the rotation of its input drive rollers, and driving the free end, the beginning of the film waiting, in the other injection device and cutting is caused by rotating its input drive rollers.
  • FIG. 1 is schematically illustrated the application of the invention to a machine for the packaging of groups of products 1, 2, 3, 4 with plastic film 5, which is made integral a group of products around which it has been wound using any suitable device 6, such as a heating tunnel when the plastic material used is heat-shrinkable, or a heat-sealing device or a device collage, as mentioned in the preamble.
  • any suitable device 6 such as a heating tunnel when the plastic material used is heat-shrinkable, or a heat-sealing device or a device collage, as mentioned in the preamble.
  • the device of Figure 1 is arranged to avoid having to reload the compensating rollers at each coil change.
  • the film 5 is dispensed from a dispensing reel 7 and is directed to the wrapping zone 8 in which, in known manner, the groups of products are brought, for example by means of a carpet 9 carrier ; likewise, they leave it with the aid of another belt 10 which drives them towards the closing device 6.
  • rollers 11, 12, 13 which, for some of them 11, 12, are compensating rollers contributing, in addition to their guiding function, adjusting the tension of the film as it unwinds from the reel 7 dispenser.
  • the rollers 11, 12 are attached to movable mechanisms 14, 15, called puppets.
  • the film 5 Downstream of the guiding devices 11, 12, the film 5 passes into a device 16 which, according to the invention, can be made according to several variants, which will be described in detail later.
  • the device 16 comprises, among other things, the means 17 for injecting and cutting the film.
  • the injection and cutting means consist of a single device, the structure of which, known per se, comprises a first arrangement, referred to as upstream, of two injection rollers 18, 19, tangential contact with each other, one 18 for example coach, the other 19 driven, and a second arrangement, said downstream, identical to the first, two other rollers 20, 21, said pressure, also in tangential contact, with a driving roller 20 and a driven roller 21.
  • the film is disposed between the two rollers of each arrangement, and is driven by the pressure exerted between the two rollers of the same arrangement.
  • the means 17 for injection and cutting of the film comprise a device with a member 22 for cutting the film.
  • the member 22 for cutting the film, in order to produce the successive sections consists, in known manner, of a sharp blade carried by a bar 23 rotatable about its longitudinal axis as illustrated by the arrow 24.
  • the member 22 here, the blade, and the bar constitute the cutting device itself, which device is controlled by the control mechanism of the machine according to the desired length of the sections of film necessary to surround the groups of products.
  • the bar 23 is rotated so that the cutting edge of the blade passes through the thickness of the film during its movement.
  • the bar 23 is connected to means for causing its rotation at appropriate times depending on the advance of the film in the machine.
  • the means for causing the rotation are constituted by a motor, not shown, which can be sequentially controlled; alternatively, the rotational movement is caused by a cam mechanism connected for example to the drive mechanism of the rollers 18, 20 coaches.
  • the means for causing rotation of the bar can be connected directly or via a return mechanism.
  • first 50 forming a section for packaging a group 3 of products
  • second 51 secured to the reel 7 dispenser.
  • the first portion 50 is directed to a group 3 of products by means of a movable guiding device, known per se, and constituted for example by an arrangement of bars which seize the film as it leaves the arrangement. downstream of rollers 20, 21 pressure, and make it a suitable path, symbolized by the broken line 26 to surround the group 3 of products, while the second portion 51 continues to be driven by the arrangement of the two rollers 18, 19 injection upstream of the means 17.
  • the two arrangements are arranged such that, or are associated with means not shown such that, when the film has been cut, the end 27 of the second portion 51 of film, which is then between the two arrangements is directed between the two rollers 20, 21 of the downstream arrangement and is taken up by them, before being in turn gripped by the guiding device 25 which leads to the next group of products by browsing at again the appropriate path symbolized by the broken line 26.
  • a full bobbin 70 is placed in the machine, while the film 5 of the reel 7 is unwinding, and the free end 52 of the film 53 connected to this full reel is kept waiting at the inlet of the injection and cutting means.
  • the machine comprises between this solid coil 70 and the inlet of the injection means, a second set of guiding devices, with rollers 110, 120, 130, 140, which for some 110, 120, are rollers compensators. These are then attached to movable mechanisms 150, 160, such as puppets.
  • the film 53 connected to the full reel is in two parts: a first part 54, which constitutes the remaining portion of the film of a reel which has been unrolled previously in place of the reel 70, and a second part 55 which constitutes the beginning of the film originally arranged on the full reel.
  • the two parts 54, 55, are interconnected by a weld 56 made hot.
  • the weld 56 is therefore made at the end of the film of the coil which was previously in place of the coil 70 and the beginning of the film of the coil 70, at the moment when it is put in place.
  • welding bars 28, 29 between which the film scrolls.
  • the first portion 54 is disposed on a path that incorporates the second set of guide devices, with the rollers 110, 120, 130, 140.
  • the welding bars are disposed between the coil 70 and the second set of guiding devices, with its rollers 110, 120, 130, 140.
  • the rollers 30, 31 for holding are connected to non-visible drive members, which are arranged to be activated to drive the film 53 towards the injection rollers 18, 19 in order to allow it to be picked up by the latter , and to be stopped to keep the movie stopped.
  • the driving members are arranged to be activated when the film 53 is to be driven by the injection rollers, so that the film is driven by the holding rollers at the same speed as by the injection rollers.
  • the holding rollers are disengageable relative to the drive members, and are disengaged when the film 53 is driven by the injection rollers, so that, in this configuration, the film flows freely between the holding rollers.
  • the film 5 unwinding from the distributor coil 7 also passes between welding bars 32, 33 to allow the reel change when the latter is emptied in turn, and between the rollers 34, 35 holding upstream of the injection rollers 18, 19.
  • the retaining rollers 34, 35 are connected to non-visible drive members, which are arranged to be actuated to drive the film 5 towards the injection rollers 18, 19 to allow its recovery by the latter, and to be stopped to keep the film stopped.
  • This embodiment therefore makes it possible to change the film without emptying one or the other of the guiding devices with the compensating rollers.
  • FIG 2 there is illustrated a preferred embodiment of the device 16 comprising, inter alia, the means 17 for injection and cutting the film.
  • the device 16 is shown in a position in which the film 53 is driven, and the film 5 is stopped.
  • the injection and cutting means comprise the upstream arrangement, two injection rollers 18, 19, and the downstream arrangement, two other pressure rollers 20, 21, as well as, in between two arrangements, the device with a member 22 for cutting the film, consisting of a sharp blade carried by the bar 23 rotatable about its longitudinal axis.
  • Two sets of holding rollers are arranged upstream of the injection rollers 18, 19.
  • the film 53 is arranged to pass between the rollers 300, 310 of the first set, and the film 5 is arranged to pass between the rollers 340, 350 of the second set.
  • rollers 300, 350 of each of these sets is not completely cylindrical, but is provided with a flat portion 301, 351 parallel to the axis of rotation of its roller 300, 350 respectively.
  • the drive members are arranged to arrange the flat opposite the other roll of the device when the film is to be driven by the injection rollers, so that the film scrolls freely in the interstice which then appears between the two rollers.
  • the direction of rotation of the injection rollers 18, 19 is reversed in order to disengage the start, and the rollers 300, 310 of holding are simultaneously rotated to tighten the film 53 and prevent it do not disengage from these, then we stop holding rollers; then the rollers 340, 350 are rotated to drive the free end of the film 5 into the injection rollers.
  • the holding rollers of each device are arranged in such a way that the length of the portion of film that is likely to be caught between the injection rollers and the holding rollers is less than the perimeter of the cylindrical portion. of each roll provided with a flat.
  • FIGS. 3 and 4 illustrate two variants of the device 16 in which the injection means consist of two devices in parallel, and in which the holding of a film in the stopped position is carried out using the injection rollers of the film considered, and is provided at the output of the device 16 means for directing the film being peeled to the mobile guide device, constituted for example by the arrangement of bars that seize the film at its output from the downstream arrangement of rollers 20, 21 of pressure, and make it undergo the appropriate path, symbolized by the broken line 26, towards the wrapping zone.
  • a first injection and cutting device comprises the injection rollers 181, 191, the pressure rollers 201, 211, and a cutting member 231;
  • a second injection and cutting device comprises the injection rollers 182, 192, the pressure rollers 202, 212, and a cutting member 232;
  • the means for directing the film being unwound to the mobile guiding device are two belts 36, 37 each located at the exit of an injection device and cutting to take the film coming out.
  • a first belt 36 is for example stretched between a pressure roller 201 of the first injection and cutting device and a tension roller 221; the second 37 is for example stretched between a pressure roller 212 of the second injection and cutting device and a tension roller 222.
  • the film 53 which is driven into the first injection and cutting device: the film 5 is kept at a standstill by the injection rollers 182, 192 of the second injection and cutting device.
  • the film 53 is directed towards the means 25 by the belt 36.
  • a first injection and cutting device comprises the injection rollers 183, 193, the pressure rollers 203, 213, and a cutting member 233;
  • a second injection and cutting device comprises the injection rollers 184, 194, the pressure rollers 204, 214, and a cutting member 234;
  • the means for directing the unwinding film towards the mobile guiding device is a single belt 38, the path of which passes it between the pressure rollers of the two injection and cutting devices.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Basic Packing Technique (AREA)
  • Packages (AREA)
  • Secondary Cells (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (20)

  1. Verfahren zum Nachfüllen einer Maschine zur Verpackung von Produktgruppen (1, 2, 3, 4) mit Hilfe einer Kunststofffolie (5; 51; 53), die für diese Verpackung bestimmt ist, wobei die Maschine einerseits Mittel (17) zum Einführen und Abschneiden der Folie, die mit der Folie von einer Verteilerspule (7) versorgt werden, die sich stromaufwärts zu den Mitteln (17) zum Einführen und Abschneiden in Ablaufrichtung der Folie befindet, und andererseits Mittel zur Lagerung einer vollen Spule (70) ebenfalls stromaufwärts zu den Mitteln (17) zum Einführen und Abschneiden umfasst, wobei die Mittel (17) zum Einführen und Abschneiden eine Vorrichtung mit einem Element (22) zum Abschneiden der Folie umfassen, das es ermöglicht, die aufeinander folgenden Folienabschnitte für die Verpackung der Produktgruppen herzustellen, wobei das Verfahren von der Art ist, dass nach Erfassung des baldigen Endes der Folie (51) der Verteilerspule (7) verschiedene Schritte eingesetzt werden, die es ermöglichen, ihr Abwickeln zu beenden und sie zu leeren und die Folie der vollen Spule (70) in die Mittel (17) zum Einführen einzuspannen, so dass diese letztgenannte ihrerseits zur Verteilerspule wird, wobei dann jene (7), die geleert wurde, durch eine neue volle Spule ersetzt wird, dadurch gekennzeichnet, dass es darin besteht:
    - während eine Spule (7) beim Verteilen ist, den Durchgang des letzten Endes der Folie (51) dieser Spule (7) in einer vorbestimmten Position der Maschine, die sich zwischen der Spule (7) und den Mitteln (17) zum Einführen und Abschneiden befindet, zu überwachen, und
    - wenn der Durchgang in dieser vorbestimmten Position erfasst wird, das Fortlaufen der Folie (51) dieser Spule in den Mittel (17) zum Einführen und Abschneiden zu stoppen, damit ein Folienrest (54) zwischen dem letzten Ende der Folie und den Mitteln (17) zum Einführen und Abschneiden verbleibt, und
    - in diesen letztgenannten den Vorschub des freien Endes (52) der Folie (54, 55), die mit der vollen Spule (70) verbunden ist, zu bewirken, so dass diese zur Verteilerspule wird, und
    - während diese letztgenannte (70) beim Verteilen ist, die leere Spule (7) zu entnehmen und sie durch eine neue volle Spule zu ersetzen, den Anfang der Folie (55) der neuen vollen Spulen an das Ende des Folienrests (54) der entnommenen zu schweißen (56) und am Eingang der Mittel (17) zum Einführen und Abschneiden das freie Ende des Anfangs (52) der mit dieser neuen Spule verbundenen Folie (54, 55) zu halten und den vorgenannten Zyklus mit der neuen Spule wieder zu beginnen, wenn das letzte Ende der Folie der Spule (70), die nun beim Verteilen ist, seinerseits eine vorbestimmte Position in der Maschine erreicht.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Erfassung der vorbestimmten Position des Endes der Folie (51) der Spule (7) während des Verteilens in zwei Phasen durchgeführt wird: eine erste, in der annähernd die Restfolienlänge, die auf diese Spule während der Verteilung gewickelt ist, geschätzt wird und dann, wenn ein vorbestimmter Wert erreicht ist, das Fortlaufen der Folie dieser Spule in den Mitteln (17) zum Einführen und Abschneiden gestoppt wird, die volle Spule (70) in Betrieb genommen wird, wobei der Vorschub des freien Endes (52) der Folie (53), die mit dieser Spule verbunden ist, in den Mitteln (17) zum Einführen und Abschneiden bewirkt wird, so dass diese zur Verteilerspule wird und die andere (7) angehalten wird, und eine zweite, in der genau die Restlänge der auf die Spule (7) im Stillstand gewickelten Folie bestimmt wird, wonach:
    a) wenn die Restfolienlänge auf dieser Spule (7) im Stillstand ausreichend ist, um die Verpackung der Produktgruppen (1, 2, 3, 4) fortzusetzen:
    das Fortlaufen der Folie (53) der anderen (70), die zur Verteilerspule geworden ist, in den Mitteln (17) zum Einführen und Abschneiden gestoppt wird, in diesen letztgenannten der Vorschub des freien Endes der mit der in Wartestellung befindlichen Spule (7) verbundenen Folie bewirkt wird, so dass diese wieder zur Verteilerspule wird, und
    der Durchgang des stromaufwärtigen letzten Endes der Folie (51) dieser Spule in der Maschine in der so genannten vorbestimmten Position, die sich zwischen der Spule und den Mitteln (17) zum Einführen und Abschneiden befindet, überwacht wird, und
    wenn der Durchgang in dieser Position erreicht ist, das Fortlaufen der Folie dieser Spule (7) in den Mitteln (17) zum Einführen und Abschneiden wieder gestoppt wird und die andere Spule (70) wieder in Betrieb genommen wird, wobei in diesen letztgenannten der Vorschub des freien Endes der mit dieser anderen Spule verbundenen Folie bewirkt wird, so dass diese wieder zur Verteilerspule wird;
    die leere Spule entnommen und eine volle Spule an ihre Stelle gesetzt wird;
    der Anfang der Folie der vollen Spule an das letzte Ende des restlichen Teils der Folie der entnommenen Spule geschweißt wird und gewartet wird, bis die Restfolienlänge, die auf die zweite gewickelt ist, einen neuerlichen Spulenwechsel erfordert;
    b) wenn die Restfolienlänge auf dieser Spule (7) im Stillstand nicht ausreichend ist, um das Verpacken der Produktgruppen (1, 2, 3, 4) fortzusetzen:
    die Verpackung mit der Folie der anderen Spule (70) fortgesetzt wird, bis bewertet wird, dass die auf diese gewickelte Restfolienlänge einen neuerlichen Spulenwechsel erfordert, und während dieser Zeit
    das letzte Ende der Folie der ersten Spule in die Maschine in die vorbestimmte Position zwischen der Spule und den Mitteln (17) zum Einführen und Abschneiden gebracht wird, und
    die leere Spule entnommen und eine neue volle Spule an ihre Stelle gesetzt wird;
    der Beginn der Folie der vollen Spule an das letzte Ende des restlichen Teils der Folie der soeben entnommenen Spule geschweißt wird, und
    die vorhergehenden Schritte mit Wechseln von einer Spule zur anderen wieder begonnen werden.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass die annähernde Bewertung der Restlänge auf der Spule während des Verteilens und/oder die genaue Bestimmung der Restlänge auf der Spule im Stillstand und/oder die Überwachung des Durchgangs des stromaufwärtigen letzten Endes der Folie der Spule während der Verteilung in der Maschine in der vorbestimmten Position vom Bediener der Maschine durchgeführt werden.
  4. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass die annähernde Bewertung der Restlänge auf der Spule während des Verteilens und/oder die genaue Bestimmung der Restlänge auf der Spule im Stillstand und/oder die Überwachung des Durchgangs des stromaufwärtigen letzten Endes der Folie der Spule während der Verteilung in der Maschine in der vorbestimmten Position automatisch durchgeführt werden.
  5. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass das Anhalten einer Spule während des Verteilens und/oder die Inbetriebnahme einer vollen Spule und/oder die Neuinbetriebnahme einer Spule vom Bediener der Maschine durchgeführt werden.
  6. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass das Anhalten einer Spule während des Verteilens und/oder die Inbetriebnahme einer vollen Spule und/oder die Neuinbetriebnahme einer Spule automatisch durchgeführt werden.
  7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass, da die Maschine einen Ausgleichsmechanismus mit Ausgleichsrollen (11, 12, 110, 120) zwischen jeder Spule und den Mitteln (17) zum Einführen und Abschneiden umfasst, die vorbestimmte Position zwischen der Spule und den Mitteln (17) zum Einführen und Abschneiden überwacht wird, so dass das Fortschreiten der Spule während des Verteilens gestoppt wird, wenn sich das Ende der Folie, die von dieser Spule getragen wird, zwischen der Spule und dem entsprechenden Ausgleichsmechanismus befindet.
  8. Maschine für den Einsatz des Verfahrens nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass sie zwei Anordnungen umfasst, um alternativ den Anfang der Folie einer Spule und der anderen in den Mitteln (17) zum Einführen und Abschneiden vorzuschieben, und dass diese Anordnungen Mittel (30, 31; 34, 35; 300, 310; 340, 350) zum Vorschieben und Halten umfassen, die derart angeordnet sind, dass sie am Eingang der Mittel (17) zum Einführen und Abschneiden das Anfangsende der Folie in Wartestellung halten und den Vorschub der Folie der Verteilerspule (7) in den Mitteln (17) zum Einführen und Abschneiden ermöglichen, und dass sie einen Ausgleichsmechanismus mit Ausgleichsrollen (11, 12; 110, 120) zwischen jeder Spule und den Mitteln (17) zum Einführen und Abschneiden und Schweißmittel (28, 29; 32, 33) zwischen einer Spule und dem jeweiligen Ausgleichsmechanismus umfassen.
  9. Maschine nach Anspruch 8, dadurch gekennzeichnet, dass die Anordnungen identisch sind.
  10. Maschine nach einem der Ansprüche 8 oder 9, dadurch gekennzeichnet, dass die Mittel (17) zum Einführen und Abschneiden von einer einzigen Vorrichtung zum Einführen und Abschneiden gebildet sind, umfassend an ihrem Eingang Rollen (18, 19) zum Einführen der Folie, und dass die Mittel (30, 31; 34, 35; 300, 310; 340, 350) zum Vorschieben und Halten von zwei getrennten Vorrichtungen zum Vorschieben und Halten gebildet sind, die stromaufwärts zu den Einführrollen angeordnet sind, und dass die Maschine derart angeordnet ist, dass, nachdem das Fortlaufen der Folie einer Spule während der Verteilung in der Vorrichtung zum Einführen und Abschneiden gestoppt wurde, die Fortlaufrichtung dieser Folie in der Vorrichtung umgekehrt wird, so dass deren Anfangsende freigelegt wird, und dass dessen Halten mit der entsprechenden Vorrichtung zum Einführen und Halten sichergestellt wird und dann das Anfangsende der Folie in Wartestellung zwischen die Einführrollen mit der anderen entsprechenden Vorrichtung zum Vorschieben und Halten vorgeschoben wird.
  11. Maschine nach Anspruch 10, dadurch gekennzeichnet, dass jede der beiden Vorrichtungen zum Vorschieben und Halten von zwei Halterollen (30, 31; 34, 35; 300, 310; 340, 350), die miteinander in Kontakt sind, gebildet ist, zwischen denen eine Folie angeordnet wird, und dass diese Rollen derart angeordnet sind, dass sie entweder die Folie in Richtung der Einführrollen (18, 19) vorschieben, um ihre Übernahme durch diese letztgenannten zu ermöglichen, oder die Folie im Stillstand halten oder die Folie ablaufen lassen, wenn sie von den Einführrollen vorgeschoben werden soll.
  12. Maschine nach Anspruch 11, dadurch gekennzeichnet, dass die Halterollen mit Antriebselementen verbunden sind, die derart angeordnet sind, dass sie in Betrieb gesetzt werden, um den Vorschub der Folie in Richtung der Einführrollen durchzuführen, um ihre Übernahme durch diese letztgenannten zu ermöglichen, und dass sie gestoppt werden, um die Folie im Stillstand zu halten.
  13. Maschine nach Anspruch 12, dadurch gekennzeichnet, dass die Antriebselemente derart angeordnet sind, dass sie in Betrieb gesetzt werden, wenn die Folie von den Einführrollen vorgeschoben werden soll, so dass die Folie von den Halterollen mit derselben Geschwindigkeit wie von den Einführrollen vorgeschoben wird.
  14. Maschine nach Anspruch 12, dadurch gekennzeichnet, dass die Halterollen in Bezug auf die Antriebselemente auskuppelbar sind, und ausgekuppelt werden, wenn die Folie von den Einführrollen vorgeschoben wird, so dass in dieser Ausführung die Folie frei zwischen den Halterollen umläuft.
  15. Maschine nach Anspruch 12, dadurch gekennzeichnet, dass mindestens eine der Halterollen (300, 350) jeder Vorrichtung zum Vorschieben und Halten an ihrer Peripherie mit einer Abflachung (301, 351) parallel zur Drehachse der Rolle versehen ist, und die Antriebselemente derart angeordnet sind, dass die Abflachung (301, 351) gegenüber der anderen Rolle (310, 340) der Vorrichtung angeordnet werden, wenn die Folie von den Einführrollen vorgeschoben werden soll, so dass die Folie frei in dem Zwischenraum aufläuft, der sich nun zwischen den beiden Rollen ergibt, und dass die Einführrollen und die Halterollen jeder Vorrichtung derart angeordnet sind, dass die Länge des Folienabschnitts, die zwischen den Einführrollen und den Halterollen erfasst werden kann, wenn die Abflachung einer Rolle nicht gegenüber der anderen Rolle derselben Vorrichtung liegt, kleiner als der Umfang des zylindrischen Abschnitts jeder mit einer Abflachung versehenen Rolle ist.
  16. Maschine nach einem der Ansprüche 8 oder 9, dadurch gekennzeichnet, dass die Mittel (17) zum Einführen und Abschneiden von zwei getrennten Vorrichtungen zum Einführen und Abschneiden gebildet sind, die jeweils die Folie (5, 53) einer Spule aufnehmen und jeweils an ihrem Eingang Rollen (182, 192; 181, 191 (Figur 3); 183, 193; 184, 194 (Figur 4)) zum Vorschieben der Folie umfassen, und dass die Mittel zum Vorschieben und Halten von den Vorschubrollen (182, 192; 181, 191 (Figur 3); 183, 193; 184, 194 (Figur 4)) gebildet sind, die sich am Eingang der Vorrichtungen zum Einführen und Abschneiden befinden, und dass die Maschine derart angeordnet ist, dass das Fortlaufen der Folie einer Spule während des Verteilens in einer Vorrichtung zum Einführen und Abschneiden gestoppt wird, wobei die Drehung ihrer Eingangsvorschubrollen angehalten wird, und dass der Vorschub des Anfangsendes der Folie in Wartestellung in der anderen Vorrichtung zum Einführen und Abschneiden hervorgerufen wird, wobei ihre Eingangsvorschubrollen in Drehung versetzt werden.
  17. Maschine nach Anspruch 16, dadurch gekennzeichnet, dass sie Mittel (36, 37, 38) umfasst, um die Folie während der Verteilung, die aus der einen oder der anderen der beiden getrennten Vorrichtungen zum Einführen und Abschneiden austritt, in Richtung einer Zone (8) der Maschine zu begleiten, in der die Verpackung der Produktgruppen (1, 2, 3, 4) erfolgt.
  18. Maschine nach Anspruch 17, dadurch gekennzeichnet, dass die Mittel (36, 37, 38) zum Begleiten der Folie während der Verteilung mindestens einen Förderriemen umfassen, der in Vorschubrichtung der Folie stromabwärts zu den Elementen (231, 232, 233, 234) zum Abschneiden jeder der getrennten Vorrichtungen zum Einführen und Abschneiden angeordnet ist.
  19. Maschine nach Anspruch 18, dadurch gekennzeichnet, dass ein Riemen derart angeordnet ist, dass er die Folie bis in die Verpackungszone begleitet.
  20. Maschine nach Anspruch 18, dadurch gekennzeichnet, dass ein Riemen derart angeordnet ist, dass er die Folie bis zu einer beweglichen Führungsvorrichtung (25) begleitet, um die Folie am Ausgang des Riemens zu erfassen und sie einer geeigneten Bahn (26) zuzuführen, um die Produktgruppe zu umgeben.
EP02722388A 2001-04-10 2002-04-02 Verfahren zum rüsten einer einwickelmaschine mit folie, und einwickelmaschine zur durchführung des verfahrens Expired - Lifetime EP1379457B1 (de)

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FR0104833A FR2823190B1 (fr) 2001-04-10 2001-04-10 Procede pour recharger une fardeleuse a l'aide d'un film plastique, et fardeleuse mettant en oeuvre le procede
FR0104833 2001-04-10
PCT/FR2002/001124 WO2002083533A1 (fr) 2001-04-10 2002-04-02 Procede pour recharger une fardeleuse a l'aide d'un film plastique, et fardeleuse mettant en oeuvre le procede.

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US10766650B2 (en) 2015-05-07 2020-09-08 Sidel Packing Solutions Controlled feed for batch packaging
US11332336B2 (en) 2015-10-01 2022-05-17 Sidel Packing Solutions Feed for plastic-wrapping

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US11332336B2 (en) 2015-10-01 2022-05-17 Sidel Packing Solutions Feed for plastic-wrapping
US10669113B2 (en) 2016-04-29 2020-06-02 Sidel Packing Solutions Bundle-wrapping feedstock

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EP1379457A1 (de) 2004-01-14
DE60210759T2 (de) 2007-04-12
US20080092493A1 (en) 2008-04-24
ATE323658T1 (de) 2006-05-15
WO2002083533A1 (fr) 2002-10-24
PT1379457E (pt) 2006-07-31
US7326308B2 (en) 2008-02-05
FR2823190B1 (fr) 2003-09-05
FR2823190A1 (fr) 2002-10-11
DE60210759D1 (de) 2006-05-24
US20040103977A1 (en) 2004-06-03
ES2261661T3 (es) 2006-11-16

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