EP3647213B1 - Etikettiermaschine und etikettierverfahren zum aufbringen von etikettfolien auf artikel - Google Patents

Etikettiermaschine und etikettierverfahren zum aufbringen von etikettfolien auf artikel Download PDF

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Publication number
EP3647213B1
EP3647213B1 EP18306423.7A EP18306423A EP3647213B1 EP 3647213 B1 EP3647213 B1 EP 3647213B1 EP 18306423 A EP18306423 A EP 18306423A EP 3647213 B1 EP3647213 B1 EP 3647213B1
Authority
EP
European Patent Office
Prior art keywords
web
label
station
path
holders
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18306423.7A
Other languages
English (en)
French (fr)
Other versions
EP3647213A1 (de
Inventor
Marco Ferri
James Carmichael
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 Participations SAS
Original Assignee
Sidel Participations 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 Sidel Participations SAS filed Critical Sidel Participations SAS
Priority to EP18306423.7A priority Critical patent/EP3647213B1/de
Priority to PCT/EP2019/077757 priority patent/WO2020088923A1/en
Priority to EP19784074.7A priority patent/EP3873815A1/de
Publication of EP3647213A1 publication Critical patent/EP3647213A1/de
Application granted granted Critical
Publication of EP3647213B1 publication Critical patent/EP3647213B1/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
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/10—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with devices for breaking partially-cut or perforated webs, e.g. bursters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C9/08—Label feeding
    • B65C9/18—Label feeding from strips, e.g. from rolls
    • B65C9/1803—Label feeding from strips, e.g. from rolls the labels being cut from a strip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C9/08—Label feeding
    • B65C9/18—Label feeding from strips, e.g. from rolls
    • B65C9/1803—Label feeding from strips, e.g. from rolls the labels being cut from a strip
    • B65C9/1815—Label feeding from strips, e.g. from rolls the labels being cut from a strip and transferred by suction means
    • B65C9/1826—Label feeding from strips, e.g. from rolls the labels being cut from a strip and transferred by suction means the suction means being a movable vacuum arm or pad
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C9/08—Label feeding
    • B65C9/18—Label feeding from strips, e.g. from rolls
    • B65C9/1803—Label feeding from strips, e.g. from rolls the labels being cut from a strip
    • B65C2009/1834—Details of cutting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C9/08—Label feeding
    • B65C9/18—Label feeding from strips, e.g. from rolls
    • B65C9/1803—Label feeding from strips, e.g. from rolls the labels being cut from a strip
    • B65C2009/1834—Details of cutting means
    • B65C2009/1857—Details of cutting means two co-acting knifes
    • 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
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5151—Cutting handled material transversally to feeding direction
    • B65H2301/51514—Breaking; Bursting; Tearing, i.e. cutting without cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/40—Shafts, cylinders, drums, spindles
    • B65H2404/41—Details of cross section profile
    • B65H2404/412—Details of cross section profile made of circular segments
    • B65H2404/4121—Details of cross section profile made of circular segments moving relatively to each other during rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/33—Rotary suction means, e.g. roller, cylinder or drum
    • B65H2406/334—Rotary suction means, e.g. roller, cylinder or drum arranged on movable frame
    • 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
    • B65H2701/19—Specific article or web
    • B65H2701/192—Labels
    • 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
    • B65H2801/75—Labelling machines

Definitions

  • the present invention relates to a labeling machine and a labeling process for applying label sheets onto articles.
  • the packaging of food or non-food products into respective articles comes along with a labeling of the articles by means of respective label sheets, in particular paper or plastic label sheets, during a labeling process run with a labeling machine.
  • the articles are driven by a conveying carousel along a predetermined path, or track, which guides the articles towards an application station, at which each label sheet is transferred to the respective article
  • a conveying carousel along a predetermined path, or track
  • an application station at which each label sheet is transferred to the respective article
  • the label sheets are cut from a web at an appropriate length before being glued by gluing means, such as a gluing roller, spray and injector system or the like, and are finally transferred to respective containers or articles.
  • gluing means such as a gluing roller, spray and injector system or the like
  • the label sheets are typically retained on a vacuum drum by suction.
  • a conventional vacuum drum presents an outer lateral surface having an approximately cylindrical lobed configuration; the vacuum drum normally receives, on its outer lateral surface, a succession of label sheets at an input station and, after a given rotation about its axis, transfers the label sheets to the articles at the application station.
  • the outer lateral surface of the vacuum drum comprises two or more sections, which are equally spaced angularly from each other around the vacuum drum axis, are provided with a series of ports and are adapted to cooperate in use with respective label sheets.
  • Each section is delimited, at the opposite angular ends, by respective damping pads, which are carried on the periphery of the vacuum drum at angularly spaced regions thereof, slightly protrude from the outer lateral surface and have the function to engage in use with the leading and the trailing end portions of the label sheets to be transferred, respectively.
  • the pads are provided with a plurality of ports.
  • the pads define the zones of the periphery of the vacuum drum where the label sheet transfers occur.
  • the distance between each pad and the relative upstream pad is thus equal to the length of the label sheet to be processed.
  • the vacuum drum retains the label sheets, already pre-cut by a rotating knife, using suction through its ports; this suction determines a negative pressure on the label sheets, which are thus retained on the outer lateral surface of the vacuum drum.
  • each label sheet is soaked with glue by means of a gluing roller; once arrived at the application station, the label sheet is released from the vacuum drum by applying a positive pressure through the ports concerned and then stuck onto the article to be labeled.
  • the web is wounded on a storing reel and is brought from the reel to the vacuum drum by means of a plurality of rollers and other support units for tensioning and supporting the web when being advanced.
  • gluing rollers have the limitation that the glue is exposed to the ambient air over a large area; thus, when hot glue is used, the components volatilize and may precipitate on adjacent parts or functional elements of the labeling machine.
  • some filaments of hot glue may deviate from the application direction and fall down onto portions of the outer surface of the vacuum drum between successive separated label sheets, thus soiling the latter vacuum drum and, therefore, preventing in operation a free sliding of the label sheets from the vacuum drum to the articles at the application station.
  • the falling of the glue on the vacuum drum should be in any case avoided, since the vacuum drum is generally expensive, delicate, and of complex manufacture, being fabricated from a monolithic aluminum casting.
  • US9174757 discloses a labeling machine for labeling articles with labels that are cut from a web of labeling material onto which glue is applied by means of gluing rollers before the vacuum drum receives the web.
  • the separation of labels is obtained through a cutting station comprising a blade not rotating with the drum and arranged on the periphery of the latter.
  • Such filaments may in fact meet the blade, hence reducing the efficiency of the latter, and then be transferred from the blade itself to following portions of the web.
  • number 1 indicates as a whole a labeling machine for applying label sheets 2 ( figure 2 ) onto articles 3, for instance containers or bottles, having respective axes A and conveyed in a known manner along a path P, preferably by a carousel conveyor 4.
  • carousel conveyor 4 is controlled to rotate continuously (anticlockwise in figure 1 ) about a vertical axis B and carry the articles 3 with the respective axes A parallel to axis B; the path P comprises, in particular, an arc of circumference extending horizontally about the axis B.
  • Labeling machine 1 comprises:
  • Input station 8, separation station 9, and application station 10 are arranged in sequence along a transfer path Q that begins at the input station 8 and ends at the application station 10.
  • Input station 8 is adjacent to web feeding unit 5 for allowing the passage of the web 6 from web feeding unit 5 itself to the label transfer device 7, while application station 10 is adjacent to the carousel conveyor 4 for allowing the transfer of the separated label sheets 2 to each of the articles 3.
  • web feeding unit 5 is arranged on the opposite side of the carousel conveyor 4, with respect to the label transfer device 7.
  • web feeding unit 5 comprises a reel 11 of web 6, placed facing input station 8 and having an axis C extending vertically, and thus parallel to axes A and B.
  • the reel 11 is drivable to rotate about axis C (anticlockwise in figure 1 ) and accordingly unwind the web 6, so that a leading portion 13 of the web 6 itself is moved towards the input station 8, where the label transfer device 7 receives the same leading portion 13.
  • the label transfer device 7 comprises a conveyor member 18 being operable to convey the web 6 along a stretch Q1 of the transfer path Q; the stretch Q1 extends from the input station 8 to the separation station 9.
  • At separation station 9 at least one of the label sheets 2 is separated at a time from the conveyed web 6, so that the separated label sheet 2 is preferably conveyed by the same conveyor member 18 to the application station 10.
  • the separated label sheet 2 is conveyed along a stretch Q2 extending from separation station 9 to the application station 10 and, therefore, defining with the stretch Q1 the whole transfer path Q.
  • the conveyor member 18 comprises a fixed closed-loop track 19, preferably elliptical as in figure 1 or circular, which comprises:
  • the conveyor member 18 further comprises at least two label holders 20 (in the embodiment shown, a plurality of label holders 20) that are aligned and movable along the path Q, in particular along the track 19, to convey the web 6 through the stretch Q1 and the separated label sheets 2 through the stretch Q2.
  • the label holders 20 may be movable along an outer surface of a rotating cylindrical vacuum drum, instead of along the fixed track 19.
  • the vacuum drum would have an axis parallel to axes A and B and the outer surface thereof would extend along the path Q.
  • each of the label holders 20 receives the web 6 at the input station 8 in such a manner to retain one respective label sheet 2 of the web 6.
  • each label holder 20 has opposite side end portions 60a, 60b that respectively retain a trailing edge portion 2a and a leading edge portion 2b of the corresponding retained label sheet 2.
  • the adjacent side end portions 60a, 60b of two consecutive label holders 20 respectively retain the trailing edge portion 2a of the corresponding upstream label sheet 2 and the leading edge portion 2b of the corresponding downstream label sheet 2.
  • Each portion 21 comprises between two respective consecutive label sheets 2 a corresponding transition region 22 ( figure 3b ) that, in the embodiment shown, is defined by a line between the consecutive label sheets 2.
  • each portion 21 comprises a tiny stretch of the corresponding trailing edge portion 2b and a tiny stretch of the corresponding leading edge portion 2a.
  • each transition region 22 may be defined by an area interposed between the respective consecutive label sheets 2.
  • the label holders 20 are independently controllable to move away or toward one another along the transfer path Q for respectively tensioning the web 6.
  • the tensioning of the web 6 and, in particular, of the portions 21 may facilitate separation of the label sheets 2 from the web 6; on the other hand, the loosening of the web 6 between consecutive label holders 20 allows folding back each respective portion 21 between the consecutive label holders 20 of the corresponding pair, so that portions 21 are preserved from interactions with devices or stations arranged along the path Q.
  • the label holders 20 comprise respective permanent magnets (known per se and not shown) that are arranged to cooperate magnetically with the track 19; accordingly, the latter track 19 houses a stator armature formed by a plurality of individually excitable solenoids (known per se and not shown) that can be powered to directly and independently drive the label holders 20 along the path Q via magnetic-inductive interaction with the respective permanent magnets.
  • the track 19 may be also provided with the permanent magnets and label holders 20 may house the individually excitable solenoids.
  • the label holders 20 have prismatic shapes with respective rear faces 40 facing toward the track 19 and respective opposite front faces 41 ( figure 2 ).
  • each of the label holders 20 has an intermediate portion 59 having decreased thickness with respect to end side portions 60a, 60b.
  • each two consecutive label holders 20 at the respective adjacent side end portions 60a, 60b are beveled toward each other along the path Q; in other words, such adjacent side end portions 60a, 60b of the two consecutive label holders 20 present corresponding bevels 61a, 61b that define a flared seat 62 therebetween.
  • Each flared seat 62 is intended to house, in use, the portion 21 folded back between the corresponding two consecutive label holders 20, when the latter holders 20 are moved toward one another.
  • each flared seat 62 becomes narrower along the path Q once the corresponding two consecutive label holders 20 move toward each other along the path Q.
  • the side end portions 60a, 60b of such two consecutive label holders 20 allows folding back of the respective portion 21 during the approaching movement thereof along the path Q, thus easing the insertion of the portion 21 itself within the narrowing flared seat 62.
  • front faces 41 are each provided with a corresponding plurality of ports 42 that are selectively exploitable to produce suction or a positive pressure on the web 6.
  • the ports 42 pass throughout the respective label holders 20 ( figure 3b ) and some of the ports 42 themselves are placed on the side end portions 60a, 60b, so that the latter portions 60a, 60b retain the trailing edge portions 2a and the leading edge portions 2b of the label sheets 2 by means of the produced suction.
  • ports 42 are specifically placed on the bevels 61a, 61b in order to ease the insertion of the portions 21 within the respective flared seats 62.
  • the label transfer device 7 comprises an annular rotating tank 43 ( figure 1 ) connected in a known manner to a vacuum source (not shown), such as a vacuum pump, and to a rotating distributor 44, in turn connected to each of the ports 42 by respective flexible pipes 45.
  • a vacuum source such as a vacuum pump
  • a rotating distributor 44 in turn connected to each of the ports 42 by respective flexible pipes 45.
  • Tank 43 is further connected in a known manner to a compressor (not shown) in order to allow production of positive pressure through the distributor 44, flexible pipes 45 and ports 42.
  • Tank 43 and distributors 44 are mounted to rotate about a common vertical axis E parallel to axes A, B and C. In addition, tank 43 and distributor 44 are arranged substantially in the central area delimited by track 19.
  • the machine 1 further comprises a gluing station 63 arranged along the path Q, in particular along the stretch Q1, upstream of the separation station 9.
  • Gluing station 63 comprises a gluing module or device 64, in particular defined by a cylindrical glue roller 64a having a vertical axis F parallel to axes A, B, C, E, and being arranged substantially tangent to the path Q, such to touch and thus soak, in use, the label sheets 2 retained by the label holders 20.
  • the glue roller 64a is arranged to soak the trailing edge portions 2a and the leading edge portions 2b respectively retained by the side end portions 60a, 60b of the label holders 20 passing through the gluing station 63.
  • the cylindrical glue roller cooperate with the respective front face 41 to spread layers 65 of gluing material over the trailing edge portion 2a and the leading edge portion 2b of the corresponding retained label sheet 2.
  • the gluing module 64 may comprise, in addition or in replacement of the above described cylindrical glue roller, other kind of different glue spreaders, such as sprayers, extruders, appliers of adhesive portions and the like.
  • the separation station 9 comprises a cutting module or device 67 arranged along the path Q on the side of the front faces 41 and controllable to cut the web 6 between each consecutive two label holders 20, in particular at the respective transition regions 22.
  • the cutting module 67 ( figures 1 , 3c, and 3d ) comprises a support base 68 fixed with respect to the conveyor member 18, a single blade 69, and a mechanism 70 that couples the blade 69 to the support base 68 in a movable manner between at least a resting position ( figures 2 and 3d ), in which the blade 69 is spaced apart from the path Q, and an operative position ( figure 3c ), in which the blade 69 comes in contact with the web 6, in use.
  • the mechanism 70 has a terminal member 71 from which the blade 69 extends, possibly planarly, up to end with a cutting portion 72 ( figure 2 ) that, in the operative position of the blade 69, is orthogonal to the path Q in a point W ( figure 1 ), in which crosses the path Q itself, so as to cut the web 6 in use.
  • the cutting portion 72 has a cutting edge 73 ( figure 2 ) that is rectilinear and parallel to axes A, B, C, E, F.
  • the mechanism 70 is controllable through an actuator 74 ( figure 1 ) that drives the member 71 to lead the blade 69 in the operative position when a transition region 22 approaches the point W.
  • the cutting portion 72 slips into the flared seat 62 between two consecutive label holders 20, thus cutting and separating the label sheets 2 retained by the two consecutive label holders 20.
  • the mechanism 70 further comprises a linear guide 75 that is fixed with respect to the support base 68, extends parallel to a direction orthogonal to the path Q in the point W, and constraints the member 71 to slide along such direction between two limit stops (not shown), respectively corresponding to the resting and operative position of the blade 69.
  • one of the label holders 20 in each pair of adjacent label holders 20 carries in a respective fixed position a corresponding counterblade 79.
  • the label holders 20 carrying the counterblades 79 are arranged alternately along the path Q with the other label holders 20.
  • the counterblades 79 may be respectively arranged at the side end portions 60a or at the side end portions 60b; in the example shown, the counterblades 79 are respectively carried by the side end portions 60a.
  • each counterblade 79 slightly protrudes toward the side end portion 60b of the adjacent label holder 20 without counterblade 79 and ends up with a cutting edge 80 within the flared seat 62.
  • some or all counterblades 79 are carried by side end portions 60b and slightly protrude toward the side end portions 60a of the respective adjacent label holders 20 without counterblades 79.
  • Two consecutive label holders 20 are moved at separation station 9 so that the counterblade 79 carried by one of such two consecutive label holders 20 touches with the cutting edge 80 the corresponding transition region 22 at point W; in such a way, such counterblade 79 cooperates with the blade 69 in the operating position thereof to achieve a smooth cut of the transition region 22 at point W.
  • the separation station 9 comprises a different rotating cutting module 82 shown in figure 5 and having the same function of the cutting module 67.
  • the rotating cutting module 82 comprises a rotary actuator 83 arranged about an axis H, preferably vertical, at a fixed distance from the path Q, and a main shaft or body 84 that extends along the axis H, is coupled to the actuator 83 and is drivable by the actuator 83 to rotate about the axis H (anticlockwise in figures 5 , 6a, 6b, 6c, and 6d ).
  • the rotating cutting module 82 comprises a blade 85 carried by the main body 84 and protruding from the main body 84 itself.
  • the blade 85 extends along a radial direction from axis H up to a linear cutting edge 86 that, in particular, is parallel to the axis H.
  • the latter edge 86 has a distance from the axis H at least equal to that of the same axis H from the path Q.
  • the actuator 83 drives the main body 84 in a continuous manner so that the blade 85 assumes a plurality of angular positions about the axis H, among which at least an operating position ( figure 6c ) thereof is distinguished in that the cutting edge 86 is incident with the path Q for cutting the web 6 at transition regions 22.
  • the main body 84 is driven with a constant angular rate while the label holders 20 are coordinately moved based on such angular rate to ensure meeting between the cutting edge 86 and one transition region 22 at each complete revolution of the main body 84, starting from the operative position of the blade 85.
  • the blade 85 is hinged to the main body 84 about an axis K, fixed and parallel to axis H, for allowing the orientation adjustment of the same blade 85.
  • the rotating cutting module 82 further comprises locking means 87, such as a locking screw, to fix in use the angular position of the blade 85 about the axis K or, in other words, the distance between the cutting edge 86 and the axis H.
  • the web feeding unit 5 feeds the web 6 to the conveyor member 18 at the input station 8.
  • the two consecutive label holders 20 are preferably moved altogether with the same velocity along the path Q towards the gluing station 63, while the aforementioned vacuum pump connected to the tank 43 is activated to suck air from ports 42.
  • the velocity of the two consecutive label holders 20 is set in such a manner that each of the two consecutive label holders 20 meets at the input station 8 one corresponding label sheet 2 of the fed web 6.
  • the trailing edge portion 2a and the leading edge portion 2b of both the label sheets 2 are respectively received by the two consecutive label holders 20 at the side end portions 60a, 60b thereof.
  • the two consecutive label holders 20 retain the respective label sheets 2 at the input station 8 at least by means of the suction produced through ports 42 placed on the side end portions 60a, 60b.
  • the two consecutive label holders 20 convey the web 6 along the path Q towards the gluing station 63 while the vacuum pump is still active ( figure 3a ).
  • the two consecutive label holders 20 are advantageously moved toward one another, so that the respective portion 21 between such label holders 20 is loosened and accordingly folded back within the flared seat 62 defined by the label holders 20 themselves ( figure 3b ).
  • the above two consecutive label holders 20 are moved toward one another until they reach a relative distance along the path Q, such that the trailing edge portions 2a and the leading edge portions 2b can perfectly adhere on the respective bevels 61a, 61b, possibly with the easing contribution of the suction produced through ports 42.
  • the folded back portion 21 retracts with respect to the gluing module 64 and, therefore, cannot receive any layers 65 even at the passage of the two consecutive label holders 20 through the gluing station 63.
  • the distance adjustment between the two consecutive label holders 20 may be unnecessary in case the same label holders 20 were already positioned at the input station 8 to receive the web 6 and to fold back here the portion 21 within the flared seat 62.
  • the web 6 is conveyed by the two consecutive label holders 20 along the stretch Q1 from the gluing station 63 towards the separation station 9 with the vacuum pump being active.
  • the relative distance between such label holders 20 may be increased to unfold the respective portion 21 and thereafter provoke tensioning of the same portion 21.
  • Such tensioning is intended to ease the separation of the upstream label sheet 2 from the web 6.
  • the cutting module 67 or the rotating cutting module 82 are operated so that the blade 69 or, respectively, the blade 85 cut the transition region 22 at the same point W with respective modes already mentioned in detail above, thus producing separation of the upstream label sheet 2 from the web 6.
  • the upstream one of the two consecutive label holders 20 is conveniently accelerated toward the application station 10 along the stretch Q2. In such a manner, such upstream label holder 20 is distanced from the downstream label holder 20 still at the separation station 9 ( figure 3d ).
  • the upstream label holder 20 is moved to convey the separate label sheet 2 to the application station 10, where the same upstream label holder 20 meets an article 3 that has been already fed to the conveyor carousel 4 along the path P.
  • the separated label sheet 2 is transferred to the article 3, in particular by shutting down the vacuum pump and activating the aforementioned compressor connected to the tank 43.
  • the positive pressure produced by such compressor pushes the separated label sheet 2 away from the respective label holder 20 to the article 3. Thanks to the layers 65 on the trailing edge portion 2a and the leading edge portion 2b of the separated label sheet 2, the latter is attached in a known manner (not described further) to the article 3.
  • the label holder 20 conveying the separated label sheet 2 is further accelerated along the return portion 19b to reach again the input station 8 ( figure 1 ).
  • the number 1' indicates as a whole a labeling machine according to a further embodiment of the invention.
  • the labeling machine 1' is similar to labeling machine 1 and will be described hereinafter only as far as it differs therefrom; corresponding or equivalent parts of labeling machines 1, 1' will be indicated where possible by the same reference numbers.
  • labeling machine 1' differs from labeling machine 1 for having a weakening station 111 instead of cutting modules 67, 69.
  • the weakening station 111 is arranged along the path Q on the side of the faces 41 and between the input station 8 and the gluing station 63.
  • the weakening station 111 is configured and controllable to create a weakening on each portion 21 at the corresponding transition region 22, such that the label sheets 2 are separable at separation station 9 simply by moving away the two consecutive label holders 20 straddling each portion 21 along the path Q.
  • the portions 21, which are weakened by means of the weakening station 111, are less resistant to traction than the rest of the web 6, so that the transition regions 22 easily break.
  • transition regions 22 are broken when the corresponding two consecutive label holders reach a predetermined distance ( figure 8b ) corresponding to a breaking traction load that is inferior to that necessary for breaking an intact transition region 22.
  • the separation station 9 does not need to comprise any kind of cutting element, such as a blade or the like.
  • each label sheet 2 can conveniently occur only by means of the tension provoked by moving the corresponding upstream label holder 20 away from the following corresponding downstream label holder 20.
  • the weakening station comprises a pre-perforation module 67' that has the same structure and components of the cutting module 67 except for the blade 69, which is replaced by a plurality of spines 69' protruding from the terminal member 71 of the mechanism 78 toward the path Q.
  • the spines 69' are driven by the mechanism 78 between a resting position, in which are spaced apart from the path Q, and an operative position in which perforate the web 6 in use.
  • the spines 69' extend along respective directions orthogonal to axes A, B, C, E, F.
  • the spines 69' are spaced between each other, so to produce onto web 6 a plurality of perforations 113 that are separated between each other by bridges of the same labeling material of the web 6.
  • Such perforations 113 define the weakening above.
  • the spines 69' are arranged according to a single row so that the weakening is defined by a corresponding row of perforations 113.
  • the pre-perforation station 111 may be provided with more rows of spines 69' to produce corresponding rows of perforations 113 on the web 6.
  • the row of spines 69' intersects in the operative position the path Q in a point V, while the mechanism 70 is controllable through the actuator 74 to lead the spines 69' to the operative position when a transition region 22 approaches the point V.
  • the spines 69' perforate the transition region 22 so to define a corresponding weakening on the respective portion 21.
  • labeling machine 1' is similar to machine 1 and is described only insofar as it differs from that of machine 1.
  • the two consecutive label holders 20 are moved in a coordinated manner with the spines 69', so that the latter reach the operative position when the transition region 22 reaches the point V ( figure 7 ).
  • the respective portion 21 is weakened when the transition region 22 thereof passes through the weakening station 111 towards the gluing station 63.
  • the two consecutive label holders 20 are moved away one another at the separation station 9 until reaching a relative distance that corresponds to the breaking tension load of the weakened portion 21 between such two consecutive label holders 20 ( figure 8b ).
  • the corresponding transition region 22 breaks so that the upstream label sheet 2 ends up separated by the web 6; then, the corresponding upstream label holder 20 accelerates toward the application station 10.
  • the weakening station 111 is lacking and the web feeding unit 5 stores a web 6 already provided with label sheets 2 joined each other through weakened portions 22'. Therefore, the above-described operation of perforating transition regions 22 by means of a pre-perforation module 67' becomes unuseful in this case.
  • the portions 21 could even lack any weakening. In this latter case, an increased tensioning of the web 6 will be needed.
  • the shapes of the label holders 20 that define the flared seats 62 allow the portions 21 to be folded back in an accurate and reliable manner.
  • the shape of side end portions 60a, 60b allows the correct soaking of only the trailing edge portions 2b and leading edge portions 2a of the label sheets 2.
  • a movement of two consecutive label holders along the path Q according to opposite directions produce a tensioning that ease the cutting of the transition regions 22 or even allow the direct separation of the label sheets 2 from the web 6, without using any cutting means that may be soiled by glue or other external agents.
  • the pre-perforation of each transition regions 22 greatly facilitate the separation of the label sheet 2 from the web 6. This can be easily obtained along the path Q before gluing the edge portions 2a, 2b by means of a simple device like the pre-perforation module 67'.
  • the rotating cutting module 82 is a very simple and reliable choice that might allow using the only actuator 83 for driving both the main body 84 and, for instance, the carousel 4, in view of the respective rotational motions thereof about parallel axes H, A.
  • the cutting module 67 allows the most effective separation of the label sheets 2 from the web 6 due to the orthogonality of the cutting portion 72 with respect to the web 6 in the operating position of the blade 69.
  • the counterblades 79 further increase the quality of the cutting and the linearity of the edges of the separated label sheets 2.
  • the gluing station 63 may be absent in both labeling machines 1, 1', while the web feeding unit 5 may store a web already provided with pre-applied portions of adhesive at the trailing edge portions 2a and the leading edge portions 2b of the label sheets 2.
  • the cutting modules 67, 68 may be functionally replaced in the labeling machine 1 by a laser-cutting module or, more in general, by other known kinds of cutting means suitable for cutting the web 6 at the transition regions 22.
  • the pre-perforation station 111 may be also arranged between the gluing station 63 and the separation station 9, instead of being arranged upstream of the gluing station 63.

Landscapes

  • Labeling Devices (AREA)

Claims (25)

  1. Etikettiermaschine (1; 1'), die eingerichtet ist, um an einer Eingabestation (8) ein Gewebe (6) eines Etikettiermaterials aufzunehmen, das eine Reihe von Etikettfolien (2) umfasst, die miteinander verbunden sind, und um getrennte Etikettfolien (2) an jeweilige Artikel (3) an einer Aufbringungsstation (10) einzuspeisen;
    die Maschine (1; 1') Folgendes umfassend:
    - ein Transportelement (18), das eingerichtet ist, um das Gewebe (6) entlang eines Pfads (Q) aus der Eingabestation (8) in Richtung auf die Aufbringungsstation (10) zu transportieren, wobei das Transportelement (18) mindestens zwei getrennte Etiketthalterungen (20) umfasst, die sich entlang des Pfads (Q) bewegen, und beim Betrieb das Gewebe (6) an der Eingabestation (8) derartig aufnimmt, um im Kontakt mit jeweiligen aufeinanderfolgenden Etikettfolien (2) des Gewebes (6) selbst zusammenzuwirken; und
    - eine Trennstation (9), die entlang des Pfads (Q) zwischen der Eingabestation (8) und der Aufbringungsstation (10) angeordnet ist, und an der mindestens eine der Etikettfolien (2) zu einem Zeitpunkt von dem Gewebe (6) getrennt wird;
    dadurch gekennzeichnet, dass die Etiketthalterungen (20) entlang des Pfads (Q) unabhängig steuerbar sind und eingerichtet sind, um
    - sich an der Trennstation (9) voneinander weg zu bewegen, um das Gewebe (6) zwischen den Etiketthalterungen (20) zu spannen.
  2. Etikettiermaschine nach Anspruch 1, wobei die Etiketthalterungen (2) jeweilige Saugstellen (60a, 60b) zum Halten der Etikettfolien (2) beim Betrieb mittels Saugung umfassen.
  3. Etikettiermaschine nach Anspruch 1 oder 2, wobei das Transportelement (18) eine Übertragungsspur (19) umfasst, wobei die Etiketthalterungen (20) auf der Übertragungsspur (19) selbstbeweglich sind.
  4. Etikettiermaschine nach einem der vorhergehenden Ansprüche, wobei die Etiketthalterungen (20) gesteuert werden, um sich an der Trennstation (9) voneinander weg zu bewegen, bis die Spannung auf dem Gewebe (6) die Trennung der mindestens einen der Etikettfolien (2) von dem Gewebe (6) bewirkt.
  5. Etikettiermaschine nach einem der vorhergehenden Ansprüche, weiterhin eine Abschwächungsstation (111) umfassend, die stromaufwärtig von der Trennstation (9) angeordnet ist oder Teil der Trennstation (9) ist und die eingerichtet ist, um beim Betrieb eine Abschwächung auf einem Übergangsbereich (22) des Gewebes (6) zwischen zwei aufeinanderfolgenden Etikettfolien (2) derartig zu erzeugen, um eine Trennung der mindestens einen der Etikettfolien (2) von dem Gewebe (6) beim Spannen des Gewebes zwischen den Etiketthalterungen (20) zu produzieren.
  6. Etikettiermaschine nach Anspruch 5, wobei die Abschwächungsstation (111) entlang des Pfads (Q) zwischen der Eingabestation (8) und der Trennstation (9) angeordnet ist.
  7. Etikettiermaschine nach einem der Ansprüche 1 bis 4, wobei das Gewebe (6) des Etikettiermaterials an der Eingabestation (8) bereits mit einer Abschwächung auf einem Übergangsbereich (22) zwischen zwei aufeinanderfolgenden Etikettfolien (2) derartig versehen ist, um eine Trennung der mindestens einen der Etikettfolien (2) von dem Gewebe (6) beim Spannen des Gewebes (6) zwischen den Etiketthalterungen (20) zu produzieren.
  8. Etikettiermaschine nach einem der Ansprüche 5 bis 7, wobei die Abschwächung mehrere Perforationen (113) durch den Übergangsbereich (22) umfasst und durch Brücken aus intaktem Etikettiermaterial getrennt ist, wobei die Perforationen (113) vorzugsweise ausgerichtet sind, um eine Abschwächungslinie orthogonal zu dem Pfad (Q) auszubilden.
  9. Etikettiermaschine nach einem der Ansprüche 1 bis 3, wobei die Trennstation (9) eine Schneidevorrichtung (67; 82) umfasst, die steuerbar ist, um beim Betrieb den lokalen Abschnitt (21) des Gewebes (6) zwischen den Etiketthalterungen (20) derartig zu schneiden, um die mindestens eine der Etikettfolien (2) von dem Gewebe (6) zu trennen.
  10. Etikettiermaschine nach Anspruch 9, wobei die Schneidevorrichtung (67) Folgendes umfasst:
    - eine einzelne Klinge (69) mit einem im Wesentlichen planaren Schneideendabschnitt (72); und
    - einen Mechanismus (70), der mit der einzelnen Klinge (69) gekoppelt ist und steuerbar ist, um die einzelne Klinge (69) mindestens zwischen einer Ruheposition, in welcher der planare Schneideendabschnitt (72) von dem Pfad (Q) beabstandet ist, und einer Betriebsposition zu bewegen, in welcher der planare Schneideendabschnitt (72) den Pfad (Q) in einem Punkt (W) derartig orthogonal kreuzt, um beim Betrieb den lokalen Abschnitt (21) des Gewebes (6) an dem Punkt (W) zu schneiden.
  11. Etikettiermaschine nach Anspruch 10, wobei eine der Etiketthalterungen (20) in einer festen Position eine planare Gegenklinge (79) trägt, die der anderen der Etiketthalterungen (20) entlang des Pfads (Q) gegenübersteht, wobei die Gegenklinge (79) angeordnet ist, um im Kontakt mit dem planaren Schneideendabschnitt (72) zusammenzuwirken, wenn die Klinge (69) in der Betriebsposition ist.
  12. Etikettiermaschine nach Anspruch 9, wobei die Schneidevorrichtung (82) Folgendes umfasst:
    - einen Tragschaft (84), der um eine zentrale Achse (H) drehbar ist, die hinsichtlich des Pfads (Q) feststehend ist; und
    - eine einzelne Klinge (85), die durch den Schaft (84) getragen wird und extern aus dem Schaft (84) vorsteht und mit einer linearen Schneide (86) endet, die mit dem Pfad (Q) mindestens an einer gegebenen Winkelposition des Schafts (84) um die zentrale Achse (H) derartig zusammenfällt, um den lokalen Abschnitt (21) des Gewebes (6) beim Betrieb zu schneiden, wenn der Schaft (84) die Winkelposition erreicht.
  13. Etikettiermaschine nach Anspruch 12, wobei die Klinge (85) drehbar an dem Schaft (84) um eine exzentrische Achse (K) parallel zu der zentralen Achse (H) befestigt ist, wobei die Schneidevorrichtung (82) weiterhin ein Verriegelungsmittel (87) umfasst, das eingerichtet ist, um die Klinge (85) in einer betriebsbereiten Winkelposition um die exzentrische Achse (K) derartig zu befestigen, dass die Schneide (86) an der Winkelposition des Schafts (84) mit dem Pfad (Q) zusammenfällt.
  14. Etikettiermaschine nach einem der vorhergehenden Ansprüche, weiterhin eine Klebestation (63) umfassend, die entlang des Pfads (Q) zwischen der Eingabestation (8) und der Trennstation (9) angeordnet ist, um mindestens eine Schicht Klebstoffmaterial auf jeder Etikettfolie (2) des Gewebes (6) abzulagern.
  15. Etikettiermaschine nach Anspruch 14, wobei die Etiketthalterungen (20) gesteuert werden, um eine vorbestimmte relative Entfernung zu erreichen, bei welcher der lokale Abschnitt (21) des Gewebes (6) zwischen den Etiketthalterungen (20) zurückgefaltet wird, und so dass die relative Entfernung an der Klebestation (63) beibehalten wird.
  16. Etikettiermaschine nach Anspruch 14 oder 15, wobei die Etiketthalterungen (20) jeweils benachbarte abgeschrägte Endabschnitte (61a, 61b) aufweisen, die entlang des Pfads (Q) und zwischen den Etiketthalterungen (20) einen gebördelten Sitz (62) zum Erleichtern einer Einführung des lokalen Abschnitts (21) in den gebördelten Sitz (62) definieren, wobei der Sitz (62) entlang des Pfads (Q) schmaler wird, während sich die Etiketthalterungen (20) aufeinander zu bewegen, so dass der lokale Abschnitt (21) des Gewebes (6) beim Betrieb zwischen den Etiketthalterungen (20) in dem Sitz (62) zurückgefaltet wird.
  17. Etikettiermaschine nach einem der Ansprüche 1 bis 13, wobei das Gewebe (6) des Etikettiermaterials bereits an der Eingabestation (8) mit mindestens einer Klebeschicht versehen ist, die auf einer Seite davon auf jeder der Etikettfolien (2) aufgebracht ist.
  18. Etikettierverfahren zum Aufbringen von Etikettfolien auf Artikeln (3), das Verfahren die folgenden Schritte umfassend:
    - Einspeisen mindestens eines Artikels (3) entlang eines ersten Pfads (P);
    - Bereitstellen eines Gewebes (6) eines Etikettiermaterials an einer Eingabestation (8), wobei das Gewebe (6) eine Reihe von Etikettfolien (2) umfasst, die miteinander verbunden sind;
    - Einspeisen des Gewebes (6) entlang eines zweiten Pfads (Q) aus der Eingabestation (8) in Richtung auf eine Aufbringungsstation (10), in welcher der zweite Pfad (Q) auf den ersten Pfad (P) trifft;
    - Trennen mindestens einer der Etikettfolien (2) zu einem Zeitpunkt von dem Gewebe (6) an einer Trennstation (9), die entlang des zweiten Pfads (Q) zwischen der Eingabestation (8) und der Aufbringungsstation (10) angeordnet ist; und
    - Einspeisen der getrennten Etikettfolie (2) bei der Aufbringungsstation (10) an den Artikel (3); gekennzeichnet durch ferner Umfassen des Schritts des Spannens des Gewebes (6) an der Trennstation (9).
  19. Verfahren nach Anspruch 18, wobei der Schritt des Einspeisens des Gewebes (6) entlang des zweiten Pfads (Q) Zurückhalten des Gewebes (6) an zwei aufeinanderfolgenden Etikettfolien (2) des Gewebes (6) selbst aus der Eingabestation (8) mittels zwei getrennten Etiketthalterungen (20) umfasst, wobei der lokale Abschnitt (21) des Gewebes (6) zwischen den Etiketthalterungen (20) angeordnet ist; und
    wobei der Schritt des Spannens des Gewebes (6) den weiteren Schritt des voneinander Wegbewegens der Etiketthalterungen (20) bei der Trennstation (9) umfasst.
  20. Verfahren nach Anspruch 19, wobei die Etiketthalterungen (20) aufeinander zu bewegt werden, bis sie eine vorbestimmte relative Entfernung erreichen, bei welcher der lokale Abschnitt (21) des Gewebes (6) zwischen den Etiketthalterungen (20) zurückgefaltet wird.
  21. Verfahren nach Anspruch 20, wobei die relative Entfernung an einer Klebestation (63) beibehalten wird, die entlang des zweiten Pfads (Q) zwischen der Eingabestation (8) und der Trennstation (9) angeordnet ist.
  22. Verfahren nach Anspruch 18, wobei das Gewebe (6) des Etikettiermaterials mit mindestens einer Klebeschicht versehen ist, die auf einer Seite davon auf jeder der Etikettfolien (2) aufgebracht ist.
  23. Verfahren nach einem der Ansprüche 18 bis 22, wobei die Etikettfolien (2) nur durch Spannen des lokalen Abschnitts (21) getrennt werden.
  24. Verfahren nach Anspruch 23, weiterhin den Schritt des Erzeugens oder Bereitstellens des Gewebes (2) mit einer Abschwächung auf einem Übergangsbereich (22) des Gewebes (6) zwischen zwei aufeinanderfolgenden der Etikettfolien (2) derartig umfassend, um eine Trennung der mindestens einen der Etikettfolien (2) von dem Gewebe (6) beim Spannen des lokalen Abschnitts (21) des Gewebes (6) zu produzieren.
  25. Verfahren nach einem der Ansprüche 18 bis 22, wobei die Etikettfolien (2) durch Schneiden des lokalen Abschnitts (21) des Gewebes (6) getrennt werden.
EP18306423.7A 2018-10-31 2018-10-31 Etikettiermaschine und etikettierverfahren zum aufbringen von etikettfolien auf artikel Active EP3647213B1 (de)

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Application Number Priority Date Filing Date Title
EP18306423.7A EP3647213B1 (de) 2018-10-31 2018-10-31 Etikettiermaschine und etikettierverfahren zum aufbringen von etikettfolien auf artikel
PCT/EP2019/077757 WO2020088923A1 (en) 2018-10-31 2019-10-14 A labeling machine and a labeling process for applying label sheets onto articles
EP19784074.7A EP3873815A1 (de) 2018-10-31 2019-10-14 Etikettiermaschine und etikettierverfahren zum aufbringen von etikettfolien auf artikel

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EP18306423.7A EP3647213B1 (de) 2018-10-31 2018-10-31 Etikettiermaschine und etikettierverfahren zum aufbringen von etikettfolien auf artikel

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IT201900015656A1 (it) * 2019-09-05 2021-03-05 Sidel Participations Sas Metodo per separare etichette da una striscia di materiale di etichettatura
DE102021100018A1 (de) 2021-01-04 2022-07-07 Krones Aktiengesellschaft Vorrichtung und Verfahren zum Etikettieren von Objekten

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IT1235977B (it) * 1989-12-18 1992-12-15 Gd Spa Dispositivo per l'applicazione di fascette a pacchetti sostanzialmenteparallelepipedi
US6471802B1 (en) * 1998-12-07 2002-10-29 Gerro Plast Gmbh Labeling apparatus and method
JP3798298B2 (ja) * 2000-12-01 2006-07-19 株式会社瑞光 回転装置、着用物品の搬送方法およびウェブの搬送方法
US6811019B2 (en) * 2001-06-29 2004-11-02 The Procter & Gamble Company Method and apparatus utilizing servo motors for placing parts onto a moving web
ITMN20050022A1 (it) * 2005-04-18 2006-10-19 Global Packaging Solutions S R L Macchina per l'applicazione su bottiglie di etichette a film continuo con colla preapplicata
DE102006013844A1 (de) * 2006-03-25 2007-10-11 Khs Ag Vakuumtrommel sowie Etikettiermaschine mit einer solchen Trommel für die Rundum-Etikettierung von Flaschen oder dergleichen Behälter
DE102007059244A1 (de) 2007-12-07 2009-06-18 Khs Ag Verfahren zum Etikettieren von Behältern sowie Etikettierstation
EP2759484A1 (de) * 2013-01-25 2014-07-30 SIDEL S.p.A. con Socio Unico Vakuumtrommel, insbesondere für eine Rollfed-Etikettiermaschine, und Vakuumtrommelunterlage
EP3272663B1 (de) * 2016-07-22 2021-11-24 Sidel Participations Etikettiervorrichtung zum etikettieren von behältern und verfahren zum betrieb solch einer etikettiervorrichtung

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