EP3892575A1 - Vorrichtung zum zuführen von folie zu einer schrumpffolienverpackungsmaschine mit mindestens zwei abrollern, die jeweils mit einem abdeckgehäuse versehen sind - Google Patents

Vorrichtung zum zuführen von folie zu einer schrumpffolienverpackungsmaschine mit mindestens zwei abrollern, die jeweils mit einem abdeckgehäuse versehen sind Download PDF

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Publication number
EP3892575A1
EP3892575A1 EP21163804.4A EP21163804A EP3892575A1 EP 3892575 A1 EP3892575 A1 EP 3892575A1 EP 21163804 A EP21163804 A EP 21163804A EP 3892575 A1 EP3892575 A1 EP 3892575A1
Authority
EP
European Patent Office
Prior art keywords
film
reel
casing
shrinkwrapper
covering
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.)
Granted
Application number
EP21163804.4A
Other languages
English (en)
French (fr)
Other versions
EP3892575B1 (de
Inventor
Daniel MIZZI
Jérôme GALPIN
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.)
Farbal
Original Assignee
Farbal
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 Farbal filed Critical Farbal
Publication of EP3892575A1 publication Critical patent/EP3892575A1/de
Application granted granted Critical
Publication of EP3892575B1 publication Critical patent/EP3892575B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H16/00—Unwinding, paying-out webs
    • B65H16/02—Supporting web roll
    • B65H16/08—Supporting web roll parallel rollers type
    • 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
    • B65B41/12—Feeding webs from rolls
    • B65B41/16—Feeding webs from rolls by rollers
    • 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
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/026—Enclosing successive articles, or quantities of material between opposed webs the webs forming a curtain
    • 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
    • B65H19/12—Lifting, transporting, or inserting the web roll; Removing empty core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • 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
    • B65B2210/00—Specific aspects of the packaging machine
    • B65B2210/04—Customised on demand packaging by determining a specific characteristic, e.g. shape or height, of articles or material to be packaged and selecting, creating or adapting a packaging accordingly, e.g. making a carton starting from web material
    • 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
    • B65H2301/41—Winding, unwinding
    • B65H2301/413—Supporting web roll
    • B65H2301/4137—Supporting web roll on its outer circumference
    • B65H2301/41372—Supporting web roll on its outer circumference rollers or balls arrangement
    • B65H2301/41374—Supporting web roll on its outer circumference rollers or balls arrangement arranged in a stationary manner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2401/00—Materials used for the handling apparatus or parts thereof; Properties thereof
    • B65H2401/20—Physical properties, e.g. lubricity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2407/00—Means not provided for in groups B65H2220/00 – B65H2406/00 specially adapted for particular purposes
    • B65H2407/10—Safety means, e.g. for preventing injuries or illegal operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/30—Facilitating or easing
    • B65H2601/32—Facilitating or easing entities relating to handling machine
    • B65H2601/321—Access
    • 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 field of the invention is that of the design and manufacture of packaging machines in plastic film.
  • the invention relates to the design of shrinkwrappers and associated equipment.
  • shrinkwrapper is to wrap products in plastic film, heat-shrinkable or not.
  • the shrinkwrapper is generally the first element of a packaging line in plastic film and preferably in polyethylene film.
  • a shrinkwrapper The principle of operation of a shrinkwrapper is as follows: an upper plastic film is welded with a lower film to form a substantially vertical film curtain.
  • the product to be packaged is conveyed by a conveyor towards the previously formed curtain.
  • the conveying of the product causes the product to push against the curtain, then causes the upper and lower films to unwind from their respective spools.
  • Photoelectric cells or any other means make it possible to detect the rear end of the product to be packaged, the conveying then being stopped.
  • a sealing device automatically closes on the upper and lower films, behind the product. In general, a double weld and a cut are made, thus completing the wrapping of the product.
  • the film curtain is replenished for the next product.
  • each wrapper is designed and manufactured according to the dimensions and characteristics of the products to be packaged.
  • the upper plastic film is unwound from a horizontal reel arranged above the conveyor and transversely to it, while the lower plastic film is unwound from a horizontal reel arranged in below the conveyor, and also transversely to it.
  • the coils are arranged on reels on the ground, positioned next to the conveyor.
  • the shrinkwrapper then comprises a device for angling the plastic film to bring the films into a configuration allowing the formation of the curtain mentioned above.
  • unwinders on the side of the conveyor are generally used to obtain a gain in height and / or to ensure continuity of the films, by placing implementation of an active coil and reserve coil system.
  • the reels on the ground are chosen for ergonomic and safety purposes, in that they allow the operator to intervene on the ground when changing the reel, and not in height.
  • the reels are generally implemented in pairs.
  • first unwinder is used to deliver the film to the wrapper and, when the reel in question is close to being completely unwound, the second reel is manipulated so as to bring the film from the second reel into contact with the film of the film.
  • first reel with a view to joining (for example by welding, or by double-sided gluing) the two films together.
  • a cutter bar then cuts the film from the first reel to separate it from the film on the second reel (the cutting can alternatively be performed manually). The film from the second reel then becomes the one that feeds the shrinkwrapper.
  • the neighboring unwinder is in action (to limit the stopping time of the shrinkwrapper as mentioned previously).
  • the drive means associated with the unwinder rotate the plastic film reel which supplies the shrinkwrapper.
  • the rotational drive of the reel which supplies the shrinkwrapper has a re-entrant angle on each side of the reel, which constitutes a risk.
  • a part of the operator's body, or a garment that he wears is brought into contact with the means for driving the spool in rotation and / or of the spool. coil itself.
  • Such a situation can lead to a phenomenon of swallowing of the part of the body and / or of the garment between the spool and the corresponding rotational drive means, with more or less significant consequences if the operator does not manage to stop. quickly release or if the rotating drive means are not stopped quickly.
  • the object of the invention is therefore to overcome this drawback of the prior art.
  • the object of the invention is to propose a device for supplying film to a wrapper comprising two unwinders side by side which eliminates, or at the very least considerably limits, the risk of a nip point when replacing a reel. by an operator.
  • Another objective of the invention is to provide such a device for supplying film to a shrinkwrapper which entails a reduced number of additional operations to be carried out in order to ensure the safety of the operator.
  • Another objective of the invention is to provide such a device for supplying film to a shrinkwrapper which is simple in design, easy and quick to implement.
  • Another objective of the invention is to provide such a device for supplying film to a shrinkwrapper which can easily be attached to an existing shrinkwrapper which does not have one.
  • a device for supplying film to a shrinkwrapper comprising at least two unwinders each intended to accommodate a reel of film, the reels being side by side and arranged to accommodate parallel film reels between them, each reel comprising a frame carrying drive means in rotation about an axis A of a reel of film, characterized in that each reel comprises a covering casing delimiting an internal volume capable of covering the means of drive and a film reel present on the unwinder, the casing being mounted movable in translation on the frame along the axis A between a covering position of the film reel and a disengaged position providing access to the film reel.
  • the operator who proceeds to replace a reel on a reel while the neighboring reel is in operation is protected from any risk of a nip point relative to the reel in operation.
  • the reel in the immediate vicinity, in operation is secured by the casing of said reel which covers both the drive means and the reel, both rotating, relative to the reel. to the reel in operation.
  • the operator can only be in contact with the housing of the reel in operation, this housing being, during this phase, fixed, and therefore not presenting any risk to the operator.
  • the reel which presents the reel of film to be replaced is stopped prior to the replacement of the reel and during the entire replacement of the reel.
  • each casing on the frame of the corresponding reel is an advantageous solution compared to other possible displacements of the casing, such as for example the implementation of a pivoting cover and in particular of a cover pivoting around a longitudinal hinge which would provide, in the open position, a particularly important obstacle to access to the reel to be replaced.
  • a pivoting cover would generate design constraints and / or a risk of falling due to its weight.
  • the casing extends between a first end and a second end, the first end having a transverse wall preventing access to the internal volume, the first end forming the front of the casing when the casing is moved. from the overlapped position to the disengaged position.
  • the casing thus formed provides protection for the operator at the level of the first end of the casing, preventing any contact of the operator with the movable, and in particular rotating, elements present inside the internal volume of the casing. crankcase.
  • the first end has a gripping means.
  • the first end has ground connection means.
  • the presence of the ground connection means avoids any overhang and, moreover, ensures the stability of the casing in all or almost all positions.
  • the ground connection means preferably comprise ground running means.
  • the translational movement of the casing can take place without effort on the part of the operator, or with a minimum of effort, in the case of pulling or pushing the casing by rolling it on the ground by means of the ground rolling means.
  • the second end of the casing is open, the chassis having a transverse fixed wall against which the casing comes to rest in the covering position.
  • This transverse fixed wall completes the protection of the operator moving close to the reel, avoiding any contact with the moving elements and in particular rotating inside the internal volume of the casing.
  • the supply device comprises, for each reel, a position sensor intended to detect the covering position of the casing, and control means connected to the position sensor, the control means allowing drive of the drive means in the cover position of the casing.
  • the association of the position sensor and the control means of the drive means makes it possible to motorize the drive of the drive means only if the casing is in the overlapped position.
  • the control means prohibit the driving of the drive means when the housing is in the released position, insofar as, in this position, it could give access to parts of the machine in motion.
  • the supply device comprises a device for connecting the films of the two side-by-side reels together, such a connecting device being advantageously associated with a thread cutting device.
  • the cut can be performed manually.
  • the invention applies to a film supply device 1 intended to supply a shrinkwrapper 2 of the type described above.
  • the film supply device comprises a first pair 1A of unwinder intended to supply, via a system of angle transmission, a film superior to the shrinkwrapper.
  • the supply device 1 further comprises a second pair 1B of unwinder intended to supply, also by means of an angle transmission system, a lower film to the shrinkwrapper 2.
  • each pair 1A, 1B comprises two reels 10, as illustrated by the figures 2 to 5 , each intended to accommodate a reel B of film, the two reels of a pair being side by side and arranged so as to receive reels of films parallel to each other, each of the reels being capable of being driven in rotation around of an axis A by drive means 12.
  • these drive means 12 consist of a pair of rollers 120 parallel to each other, each having an axis of rotation parallel to the axis A.
  • a reel B of film is placed in contact and between the rollers 120, so that the rotational drive of the rollers 120 in the same direction of rotation drives the reel B of film in a direction of rotation opposite to that of the rollers 120.
  • controlled motor means are associated with the rollers 120 of the drive means to cause the drive of the film reel B or, on the contrary, to stop the movement of the film from the reel.
  • each reel 10 comprises a covering casing 100 delimiting an internal volume V capable of covering both the drive means 12 and the reel B of film present on the reel.
  • the casing 100 of each reel is mounted movable in translation on the frame 11 of the reel, the casing 100 being able to be moved in translation along the axis A between a position of covering the reel B of film, as illustrated. over there figure 3 which shows a configuration in which the casing 100 of each reel is in the overlapped position, and a disengaged position providing access to the reel B of film, as illustrated by figure 4 which shows the casing 100 of one of the reels in the disengaged position, in this case the reel in the high position on the figure 4 .
  • the drive of the housing in translation can be manual or motorized. In order to simplify and reduce manufacturing costs, the driving of the housings is manual according to the present embodiment.
  • the height of the longitudinal side walls 1001 is dimensioned so that the casing 100 comes to cover, with a more or less adjusted functional clearance, a “full” coil B, the diameter of which is known.
  • the casing 100 extends, along the longitudinal axis A, between a first end 101 and a second end 102 delimiting between them the length of the casing 100. Again, this length separating the two ends of the casing is dimensioned in such a way that the housing is suitable for receiving and covering the entire length of a reel B of film, the length of which is known.
  • the first end 101 forms, in the configuration illustrated by figure 3 , the front wall of the housing when moving the housing from the covering position to the disengaged position.
  • This first end 101 is provided with a transverse wall 103 ( figure 5 ), preventing access to the internal volume V delimited by the housing.
  • the transverse wall 103 to prevent access to the internal volume delimited by the casing, extends over the entire surface extending between the longitudinal side walls 1001 and the upper wall 1002 of the casing.
  • ground connection means 105 have at their lower end ground rolling means 106.
  • These rolling means take the form of unidirectional rollers, oriented so as to roll in a direction parallel to the axis. TO.
  • the second end 102 of the casing is open, the frame 11 having a transverse wall 110 against which the casing comes to rest when in the covering position.
  • This transverse wall 110 can be mounted to pivot, between a position preventing access to the internal volume of the casing, and a position giving access to the internal volume of the casing.
  • each reel 10 incorporates a position sensor 13, for example in the form of a feeler.
  • This feeler is positioned so that a stop 130 carried by the casing 100 comes to press on the position sensor 13 when the casing is brought into the covering position.
  • this support plate 15 has a V-shaped receiving surface 150, ensuring the lateral stability of a coil resting on the support plate.
  • a connecting device 16 is provided to allow the connection between the films of the coils B of the side-by-side unwinders, this connecting device being associated with a film cutting device 17.
  • connection device can for example be a welding device, comprising a movable member for pressing one end of the film of the new reel (on the left on the figures 6 and 7 ) with the end of the film reel unwound (to the right on the figures 6 and 7 ), this movable member coming to heat and weld the films against each other. It should be noted that other systems for connecting the films together can be implemented.
  • the cutting device is actuated (in this case pivoted) in the direction of the film from the unwound reel to cut it and separate it from the connection made ( figure 7 ).
  • the operations consisting in swapping an unwound reel with a reserve reel can be carried out as follows.
  • This stop can be caused by the simple fact of moving the corresponding casing 100 away from its covering position towards its separated position, which results in the absence of abutment of the stop 130 against the position sensor 13.
  • the control means connected to the position sensors 13 detect the absence of a signal from the position sensor and control the stopping of the drive means of the reel in question.
  • the operator translates the casing of the unwinder incorporating the new reel.
  • the operator can thus access the film of the new reel (on the left side on the figure 2 ) and connect it to the film of the unwound spool (right side on the figure 2 ), this thanks to the welding device 14. Once the two films are welded, the film of the unwound spool is cut to be separated from the weld produced.
  • the unwinder housing with the new spool is returned to the overlapped position.
  • the drive of the reel drive means on the new reel side can be re-engaged.
  • the operator can replace the unwound reel. To do this, it brings the casing of the corresponding reel into the separated position, this in complete safety since the control means of the corresponding drive means prevent the drive of the drive means of the reel in question.
  • the operator proceeds to replace the unwound reel with a new reel, and places the housing 100 in the recovery position.
  • the film supply of the shrinkwrapper may only be authorized if the two casings of the two side-by-side reels are in the overlapping position.
  • the resumption of the film supply of the shrinkwrapper may only be authorized once all the replacement operations have been carried out and therefore the unwound reel is replaced by a new reel, with the corresponding housing replaced in the covering position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)
  • Tents Or Canopies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Unwinding Webs (AREA)
EP21163804.4A 2020-03-24 2021-03-19 Vorrichtung zum zuführen von folie zu einer schrumpffolienverpackungsmaschine mit mindestens zwei abrollern, die jeweils mit einem abdeckgehäuse versehen sind Active EP3892575B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2002868A FR3108594B1 (fr) 2020-03-24 2020-03-24 Dispositif de fourniture de film à une fardeleuse, avec au moins deux dévidoirs pourvus chacun d’un carter de recouvrement

Publications (2)

Publication Number Publication Date
EP3892575A1 true EP3892575A1 (de) 2021-10-13
EP3892575B1 EP3892575B1 (de) 2022-12-14

Family

ID=70457050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21163804.4A Active EP3892575B1 (de) 2020-03-24 2021-03-19 Vorrichtung zum zuführen von folie zu einer schrumpffolienverpackungsmaschine mit mindestens zwei abrollern, die jeweils mit einem abdeckgehäuse versehen sind

Country Status (3)

Country Link
EP (1) EP3892575B1 (de)
ES (1) ES2940076T3 (de)
FR (1) FR3108594B1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047359A (en) 1976-09-01 1977-09-13 Firma Heinrich Kuper Device for packaging an object in foil
ES2199007A1 (es) 2001-01-22 2004-02-01 Construcciones Metalicas Jose Maquina para embalaje automatico con laminas de plastico.
WO2016142710A1 (en) * 2015-03-10 2016-09-15 Linkx Systems Limited Packaging system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047359A (en) 1976-09-01 1977-09-13 Firma Heinrich Kuper Device for packaging an object in foil
ES2199007A1 (es) 2001-01-22 2004-02-01 Construcciones Metalicas Jose Maquina para embalaje automatico con laminas de plastico.
WO2016142710A1 (en) * 2015-03-10 2016-09-15 Linkx Systems Limited Packaging system

Also Published As

Publication number Publication date
ES2940076T3 (es) 2023-05-03
FR3108594B1 (fr) 2022-03-25
EP3892575B1 (de) 2022-12-14
FR3108594A1 (fr) 2021-10-01

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