EP0580985A1 - Device for removing labels from containers - Google Patents

Device for removing labels from containers Download PDF

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Publication number
EP0580985A1
EP0580985A1 EP93108718A EP93108718A EP0580985A1 EP 0580985 A1 EP0580985 A1 EP 0580985A1 EP 93108718 A EP93108718 A EP 93108718A EP 93108718 A EP93108718 A EP 93108718A EP 0580985 A1 EP0580985 A1 EP 0580985A1
Authority
EP
European Patent Office
Prior art keywords
container
label
labels
severing element
peripheral surface
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.)
Withdrawn
Application number
EP93108718A
Other languages
German (de)
French (fr)
Inventor
Günter Seifert
Jens Naecker
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.)
Alfill Getranketechik GmbH
Original Assignee
Alfill Getranketechik GmbH
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 Alfill Getranketechik GmbH filed Critical Alfill Getranketechik GmbH
Publication of EP0580985A1 publication Critical patent/EP0580985A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/20—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought
    • B08B9/22—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by soaking alone
    • B08B9/24—Cleaning containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans are brought the apparatus cleaning by soaking alone and having conveyors
    • B08B9/26—Rotating conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/083—Removing scrap from containers, e.g. removing labels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10S156/934—Apparatus having delaminating means adapted for delaminating a specified article
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00—Cutting
    • Y10S83/929—Particular nature of work or product
    • Y10S83/946—Container
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/19—Delaminating means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0405—With preparatory or simultaneous ancillary treatment of work
    • Y10T83/0419—By distorting within elastic limit
    • Y10T83/0424—By stretching
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2066—By fluid current
    • Y10T83/207—By suction means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/323—With means to stretch work temporarily
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/343—With means to deform work temporarily

Definitions

  • the invention relates to a device for removing labels, foils and the like from essentially rotationally symmetrical containers, in particular for detaching all-round labels spanning the peripheral surface of PET bottles by means of an overlap seam.
  • Reusable containers in particular reusable PET reusable bottles with a sensitive surface, pose problems when cleaning and in particular removing labels prior to each refill, since the labels, which are usually glued over the entire surface, require aggressive solvents that attack the bottle wall.
  • label gluing especially with all-round labels, which are held by a glued seam between the overlapping label ends, opens up new possibilities for bottle handling for reuse.
  • the invention is based, to take material-friendly, environmentally friendly and efficient measures for label detachment the task.
  • This object is achieved according to the invention by a detection element detaching the label at least in a partial area from the peripheral surface of the container and a severing element which interacts with it in the detection area and behind the lifted label in the direction of the longitudinal axis of the container.
  • the severing element has a knife edge which runs obliquely to the longitudinal axis of the container and which has a label which is cranked towards the container wall and leads in the separating direction underflow spacer is assigned.
  • the severing element is exposed to the action of a spring-elastic prestressing element in the direction of the container peripheral surface.
  • the severing element is expediently pivoted on a linear drive means that can be moved parallel to the longitudinal axis of the container.
  • the detection element has a suction strip adapted to the curvature of the circumferential surface of the container and movable radially to the latter between a contact position and a distance position. According to a further development, a problem-free interaction of the suction bar and cutting means is ensured in that the suction bar is provided with a through opening which receives the severing element.
  • An alternative mechanical embodiment for creating a distance between the label and the container wall consists in that the detection element has friction rollers that interact in opposite directions and interact in pairs symmetrically with respect to the severing element and which are also expediently designed as rubber rollers.
  • the labels are either severed on containers conveyed in an upright formation by a vertical stroke movement of the knife edge or severed on containers conveyed in a horizontal formation by a horizontal stroke movement of the knife edge.
  • the advantage achieved with the invention is that reusable bottles with purely mechanical means in Mass throughput can be deliberately and effectively freed from labels without damaging the bottles or polluting the environment.
  • the de-labeling device shown in FIGS. 1 to 4 has a foundation 1 which carries a main bearing 2 for a main column 4 which can be driven to rotate about a vertical axis by means of a drive wheel 3.
  • a main column 4 With the main column 4 is an upper part 6, which carries clamping heads 7 at uniform intervals.
  • a bottle table 8 is fixedly connected to the main column 4, which likewise carries centering heads 9 at regular intervals, which are lifted by means of a lifting drive means 11 by means of a control roller 12 and a fixed control cam 13 for the purpose of accommodating upright PET bottles 14 relative to the clamping heads 7 are movable.
  • the bottles 14 are provided with a body label 16 which is designed as an all-round label and which encloses the inwardly offset or constricted jacket surface of the bottle without direct adhesive contact with the bottle wall only by a glued overlap seam of the label ends.
  • the upper part 6 and the bottle table 8 rotating with the main column 4 are assigned an inlet star 17 for feeding and an outlet star 18 for removing the bottles 14 and a conveying means 19 for removing the detached labels 16.
  • the main column bears a firmly wedged rotor 21, which also receives holders 22 for a mechanical severing element 23 assigned to a bottle clamping point at regular intervals.
  • the holders 22 can be moved parallel to the longitudinal axis of the bottle by means of a linear drive 24 in cooperation with a height limiting initiator 26.
  • the severing element 23 is movably mounted on the holder 22 by means of a swivel joint 27 and is prestressed against the bottle wall by means of a compression spring 28.
  • the severing element 23 has a knife edge 29 which runs obliquely to the bottle's longitudinal axis and which is provided with a spacer 31 which is bent toward the bottle wall.
  • a label detection element 32 which, according to FIG. 4, is designed as a suction bar 36 which is provided with suction openings 33 and delimits a suction chamber 34 and which is adapted to the curvature of the circumferential surface of the bottle.
  • the detection element 32 is provided with an opening 37 which receives the holder 22 or permits the passage of the severing element 23.
  • the detection element 32 has a control lever 38 with a control roller 39 which, in cooperation with a stationary control cam 41, ensure a radial displacement of the detection element 32 relative to the circumferential surface of the bottle.
  • the contact of the control roller 39 with the control cam 41 is ensured by two tension springs 42 which act on the control lever 38 and fixed support points 43.
  • the device works as follows: The bottles 14 continuously transferred to the bottle table 8 by the inlet star 17 are clamped in a rotationally secure manner between the clamping head 7 and the centering head 9 during the rotation of the bottle table in the direction of arrow 44 by means of the lifting drive means 11 activated by the control cam 13.
  • the suction bar 36 which is acted upon by suction air, is displaced against the bottle wall by a correspondingly designed curve section 41a of the control curve 41 and is moved back by suction of the label 16 through a correspondingly designed curve section 41b of the control curve 41.
  • the spacer 31 is initially immersed under the section 16a of the label 16 which is lifted off the bottle wall in this way by activating the linear drive means 24 in the further course of the circular path 44. Then the knife edge 29 detects the lifted label section 16a and cuts the entire label 16 lengthways with the further upward movement.
  • the separated labels are then pulled off the bottles by the conveyor 19 running faster relative to the bottles 14 and are transported away, for example, by suction air support.
  • the detection element 132 consists of two oppositely rotating friction rollers 146 flanking the severing element 123 in parallel, for example formed as rubber rollers, which press the label 116 away from the bottle wall towards the knife edge 129 in the region of the section 116a, so that the spacer 131 and the knife edge 129 can immerse.
  • FIGS. 6 and 7 elements which correspond to those of the first exemplary embodiment are provided with reference numbers increased by two hundred and are not explained again in particular.
  • This arrangement differs from the first embodiment only in that the bottles 214 are conveyed continuously in a horizontal orientation, while in the same way the necessary work steps for loosening, separating and removing the label are carried out on them.
  • the bottles are fed by means of a twin screw 248 which can be driven by a motor 247, the screw turns of which are arranged in the conveying direction in such a way that the bottles are increasingly brought to the predetermined pitch of the device.
  • the bottles that are moved upwards in a lying position on a straight conveyor track are removed from the device by a conveyor belt conveyor 249.

Abstract

Die Erfindung betrifft eine Vorrichtung zum Entetikettieren von mit Rundumetiketten versehenen PET-Flaschen ohne Anfangsbeleimung. Es ist das Ziel, eine Etikettenablösung auf mechanischem Wege zu ermöglichen. Erreicht wird dies durch eine zonenweise Ablösung des Etiketts (16) mittels eines mechanischen Erfassungsorgans (32) und das Eintauchen einer mit einem vorlaufenden Abstandhalter (31) versehenen Messerschneide (29) hinter den abgelösten Etikettenabschnitt (16a). Diese Anordnung hat den Vorteil, daß das Etikett auf der ganzen Länge ohne Verformung oder Beschädigung der Flaschenwandung aufgetrennt wird. <IMAGE>The invention relates to a device for de-labeling PET bottles provided with all-round labels without initial gluing. The aim is to enable label detachment by mechanical means. This is achieved by zone-by-zone detachment of the label (16) by means of a mechanical detection element (32) and immersion of a knife edge (29) provided with a leading spacer (31) behind the detached label section (16a). This arrangement has the advantage that the entire length of the label can be separated without deforming or damaging the bottle wall. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Entfernen von Etiketten, Folien und dergleichen von im wesentlichen rotationssymmetrischen Behältern, insbesondere zum Ablösen von mittels einer Überlappungsnaht die Umfangsfläche von PET-Flaschen umspannnenden Rundumetiketten.The invention relates to a device for removing labels, foils and the like from essentially rotationally symmetrical containers, in particular for detaching all-round labels spanning the peripheral surface of PET bottles by means of an overlap seam.

Mehrwegbehälter, insbesondere wiederverwendbare PET-Mehrwegflaschen mit empfindlicher Oberfläche werfen bei der vor jeder Neubefüllung üblichen Reinigung und insbesondere Etikettenentfernung Probleme auf, da die üblicherweise ganzflächig verklebten Etiketten aggressive Lösungsmittel erforderlich machen, welche die Flaschenwandung angreifen.
Hier eröffnen Etikettenverklebungen, insbesondere bei Rundumetiketten, die allein durch eine Klebnaht zwischen den sich überlappenden Etikettenenden gehalten werden, neue Möglichkeiten auch bei der Flaschenbehandlung zwecks Wiederverwendung.Reusable containers, in particular reusable PET reusable bottles with a sensitive surface, pose problems when cleaning and in particular removing labels prior to each refill, since the labels, which are usually glued over the entire surface, require aggressive solvents that attack the bottle wall.
Here, label gluing, especially with all-round labels, which are held by a glued seam between the overlapping label ends, opens up new possibilities for bottle handling for reuse.

Der Erfindung liegt die Aufgabe zugrunde, materialschonende, umweltverträgliche und leistungsfähige Maßnahmen zur Etikettenablösung zu treffen.The invention is based, to take material-friendly, environmentally friendly and efficient measures for label detachment the task.

Diese Aufgabe wird erfindungsgemäß gelöst durch ein das Etikett wenigstens in einem Teilbereich von der Behälterumfangsfläche ablösendes Erfassungsorgan und ein mit diesem im Erfassungsbereich zusammenwirkendes, das abgehobene Etikett in Richtung der Behälterlängsachse hinterfassendes Durchtrennungselement.This object is achieved according to the invention by a detection element detaching the label at least in a partial area from the peripheral surface of the container and a severing element which interacts with it in the detection area and behind the lifted label in the direction of the longitudinal axis of the container.

Eine saubere Auftrennung des Etiketts über seine gesamte Länge wird gemäß einer Weiterbildung dadurch erleichtert, daß das Durchtrennungselement eine schräg zur Behälterlängsachse verlaufende Messerschneide aufweist, welcher ein zur Behälterwand gekröpfter, in Trennrichtung voreilender, das Etikett unterlaufender Abstandhalter zugeordnet ist.
Um das Etikett jederzeit auf der gesamten Schnittlänge sicher zu erfassen, ist das Durchtrennungselement in Richtung auf die Behälterumfangsfläche der Wirkung eines federelastischen Vorspanngliedes ausgesetzt.
Zweckmäßigerweise ist das Durchtrennungselement nach einer weiteren Ausgestaltung an einem parallel zur Behälterlängsachse verfahrbaren Linearantriebsmittel drehgelenkig gelagert.According to a further development, a clean separation of the label over its entire length is facilitated in that the severing element has a knife edge which runs obliquely to the longitudinal axis of the container and which has a label which is cranked towards the container wall and leads in the separating direction underflow spacer is assigned.
In order to securely grasp the label over the entire cut length at any time, the severing element is exposed to the action of a spring-elastic prestressing element in the direction of the container peripheral surface.
According to a further embodiment, the severing element is expediently pivoted on a linear drive means that can be moved parallel to the longitudinal axis of the container.

Um das normalerweise die Behälterumfangsfläche straff umschließende Etikett sicher erfassen und auf Schneidabstand abziehen zu können, wird weiterhin vorgeschlagen, daß das Erfassungsorgan eine der Krümmung der Behälterumfangsfläche angepaßte, radial zu dieser zwischen einer Kontaktstellung und einer Abstandsstellung bewegbare Saugleiste aufweist.
Eine problemlose Zusammenwirkung von Saugleiste und Schneidmittel ist gemäß einer Weiterbildung dadurch gewährleistet, daß die Saugleiste mit einer das Durchtrennungselement aufnehmenden Durchgangsöffnung versehen ist.
Eine alternative mechanische Ausgestaltungsform zur Schaffung eines Abstandes zwischen dem Etikett und der Behälterwand besteht darin, daß das Erfassungsorgan symmetrisch zum Durchtrennungselement paarweise zusammenwirkende, gegensinnig antreibbare Reibrollen aufweist, welche darüber hinaus zweckmäßigerweise als Gummirollen ausgebildet sind.
Gemäß alternativen erfindungsgemäßen Ausgestaltungen werden die Etiketten entweder an in aufrechter Formation geförderten Behältern durch eine vertikale Hubbewegung der Messerschneide durchtrennt oder an in liegender Formation geförderten Behältern durch eine horizontale Hubbewegung der Messerschneide durchtrennt.In order to be able to securely grasp the label which normally surrounds the circumferential surface of the container and to be able to pull it off at a cutting distance, it is further proposed that the detection element has a suction strip adapted to the curvature of the circumferential surface of the container and movable radially to the latter between a contact position and a distance position.
According to a further development, a problem-free interaction of the suction bar and cutting means is ensured in that the suction bar is provided with a through opening which receives the severing element.
An alternative mechanical embodiment for creating a distance between the label and the container wall consists in that the detection element has friction rollers that interact in opposite directions and interact in pairs symmetrically with respect to the severing element and which are also expediently designed as rubber rollers.
According to alternative embodiments according to the invention, the labels are either severed on containers conveyed in an upright formation by a vertical stroke movement of the knife edge or severed on containers conveyed in a horizontal formation by a horizontal stroke movement of the knife edge.

Der mit der Erfindung erzielte Vorteil besteht darin, daß mit rein mechanischen Mitteln wiederverwendbare Mehrwegflaschen im Massendurchsatz gezielt und effektiv von Etiketten befreit werden, ohne daß die Flaschen beschädigt werden oder die Umwelt belastet wird.The advantage achieved with the invention is that reusable bottles with purely mechanical means in Mass throughput can be deliberately and effectively freed from labels without damaging the bottles or polluting the environment.

Die Erfindung wird unter Bezugnahme auf die Zeichnung anhand von bevorzugten, die Erfindung nicht beschränkenden Ausführungsbeispielen erläutert.The invention is explained with reference to the drawing using preferred, non-limiting exemplary embodiments.

Hierbei zeigen:

Figur 1
eine Vorrichtung zum Entfernen von Rumpfetiketten von aufrechtgeförderten PET-Flaschen,
Figur 2
eine schematische Draufsicht auf die Vorrichtung gemäß Figur 1,
Figur 3
einen vergrößerten Ausschnitt auf eine erfindungswesentliche Einzelheit der Vorrichtung,
Figur 4
eine teilgeschnittene Draufsicht nach der Linie IV-IV gemäß Figur 3,
Figur 5
eine abgewandelte Ausführungsform eines Etiketten-Erfassungsorgans der Vorrichtung in der Draufsicht,
Figur 6
eine abgewandelte Gesamtanordnung der Vorrichtung für liegend geförderte PET-Flaschen und
Figur 7
die Vorrichtung gemäß Figur 6 in der Seitenansicht.
Here show:
Figure 1
a device for removing body labels from upright PET bottles,
Figure 2
2 shows a schematic top view of the device according to FIG. 1,
Figure 3
2 shows an enlarged detail of a detail of the device that is essential to the invention,
Figure 4
3 shows a partially sectioned top view along the line IV-IV according to FIG. 3,
Figure 5
a modified embodiment of a label detection element of the device in plan view,
Figure 6
a modified overall arrangement of the device for horizontally conveyed PET bottles and
Figure 7
the device of Figure 6 in side view.

Die in den Figuren 1 bis 4 dargestellte Entetikettiervorrichtung weist ein Fundament 1 auf, welches ein Hauptlager 2 für eine mittels eines Antriebsrades 3 um eine vertikale Achse rotierend antreibbare Hauptsäule 4 trägt.
Mit der Hauptsäule 4 fest verbunden ist ein Oberteil 6, welches in gleichmäßigen Teilungsabständen Spannköpfe 7 trägt.
Am unteren Ende ist ein Flaschentisch 8 mit der Hauptsäule 4 fest verbunden, welcher ebenfalls in gleichmäßigen Teilungsabständen Zentrierköpfe 9 trägt, die durch ein Hubantriebsmittel 11 mittels einer Steuerrolle 12 und einer ortsfesten Steuerkurve 13 zwecks Aufnahme von aufrechtstehenden PET-Flaschen 14 relativ zu den Spannköpfen 7 verschiebbar sind.
Die Flaschen 14 sind mit einem als Rundumetikett ausgebildeten Rumpfetikett 16 versehen, welches die nach innen abgesetzte bzw. eingeschnürte Mantelfläche der Flasche ohne direkten Klebkontakt zur Flaschenwandung lediglich durch eine verklebte Überlappungsnaht der Etikettenenden umschließt.
Dem mit der Hauptsäule 4 rotierenden Oberteil 6 und Flaschentisch 8 sind gemäß Figur 2 ein Einlaufstern 17 zum Zuführen und ein Auslaufstern 18 zum Abfördern der Flaschen 14 sowie ein Fördermittel 19 zum Entfernen der abgelösten Etiketten 16 zugeordnet.
Zwischen dem Oberteil 6 und dem Flaschentisch 8 trägt die Hauptsäule einen fest verkeilten Rotor 21, welcher ebenfalls in gleichmäßigen Teilungsabständen Halter 22 für jeweils ein einer Flascheneinspannstelle zugeordnetes mechanisches Durchtrennungselement 23 aufnimmt. Die Halter 22 sind mittels eines Linearantriebes 24 in Zusammenwirkung mit einem Höhenbegrenzungs-Initiator 26 parallel zur Flaschenlängsachse verfahrbar.The de-labeling device shown in FIGS. 1 to 4 has a foundation 1 which carries a main bearing 2 for a main column 4 which can be driven to rotate about a vertical axis by means of a drive wheel 3.
With the main column 4 is an upper part 6, which carries clamping heads 7 at uniform intervals.
At the lower end, a bottle table 8 is fixedly connected to the main column 4, which likewise carries centering heads 9 at regular intervals, which are lifted by means of a lifting drive means 11 by means of a control roller 12 and a fixed control cam 13 for the purpose of accommodating upright PET bottles 14 relative to the clamping heads 7 are movable.
The bottles 14 are provided with a body label 16 which is designed as an all-round label and which encloses the inwardly offset or constricted jacket surface of the bottle without direct adhesive contact with the bottle wall only by a glued overlap seam of the label ends.
According to FIG. 2, the upper part 6 and the bottle table 8 rotating with the main column 4 are assigned an inlet star 17 for feeding and an outlet star 18 for removing the bottles 14 and a conveying means 19 for removing the detached labels 16.
Between the upper part 6 and the bottle table 8, the main column bears a firmly wedged rotor 21, which also receives holders 22 for a mechanical severing element 23 assigned to a bottle clamping point at regular intervals. The holders 22 can be moved parallel to the longitudinal axis of the bottle by means of a linear drive 24 in cooperation with a height limiting initiator 26.

Das Durchtrennungselement 23 ist am Halter 22 mittels eines Drehgelenks 27 beweglich gelagert und mittels einer Druckfeder 28 gegen die Flaschenwandung vorgespannt. Das Durchtrennungselement 23 weist eine schräg zur Flaschenlängsachse verlaufende Messerschneide 29 auf, die mit einem zur Flaschenwand gekröpften Abstandhalter 31 versehen ist.
Dem Durchtrennungselement 23 ist ein Etikettenerfassungsorgan 32 zugeordnet, das gemäß Figur 4 als mit Saugöffnungen 33 versehene, eine Saugkammer 34 begrenzende Saugleiste 36 ausgebildet ist, welche der Krümmung der Flaschenumfangsfläche angepaßt ist. Das Erfassungsorgan 32 ist mit einer den Halter 22 aufnehmenden bzw. den Durchtritt des Durchtrennungselements 23 ermöglichenden Durchbrechung 37 versehen.
Das Erfassungsorgan 32 weist einen Steuerhebel 38 mit einer Steuerrolle 39 auf, die in Zusammenwirkung mit einer ortsfesten Steuerkurve 41 für eine Radialverschiebung des Erfassungsorgans 32 relativ zur Flaschenumfangsfläche sorgen. Der Kontakt der Steuerrolle 39 mit der Steuerkurve 41 ist durch zwei Zugfedern 42 gewährleistet, die am Steuerhebel 38 und ortsfesten Stützpunkten 43 angreifen.The severing element 23 is movably mounted on the holder 22 by means of a swivel joint 27 and is prestressed against the bottle wall by means of a compression spring 28. The severing element 23 has a knife edge 29 which runs obliquely to the bottle's longitudinal axis and which is provided with a spacer 31 which is bent toward the bottle wall.
Associated with the severing element 23 is a label detection element 32 which, according to FIG. 4, is designed as a suction bar 36 which is provided with suction openings 33 and delimits a suction chamber 34 and which is adapted to the curvature of the circumferential surface of the bottle. The detection element 32 is provided with an opening 37 which receives the holder 22 or permits the passage of the severing element 23.
The detection element 32 has a control lever 38 with a control roller 39 which, in cooperation with a stationary control cam 41, ensure a radial displacement of the detection element 32 relative to the circumferential surface of the bottle. The contact of the control roller 39 with the control cam 41 is ensured by two tension springs 42 which act on the control lever 38 and fixed support points 43.

Die Wirkungsweise der Vorrichtung ist wie folgt:
Die kontinuierlich durch den Einlaufstern 17 an den Flaschentisch 8 übergebenen Flaschen 14 werden während der Rotation des Flaschentisches in Pfeilrichtung 44 mittels der durch die Steuerkurve 13 aktivierten Hubantriebsmittel 11 drehsicher zwischen Spannkopf 7 und Zentrierkopf 9 eingespannt.
Im weiteren Verlauf der Kreisbahn in Pfeilrichtung 44 wird die durch Saugluft beaufschlagte Saugleiste 36 durch einen entsprechend gestalteten Kurvenabschnitt 41a der Steuerkurve 41 gegen die Flaschenwandung verschoben und unter Ansaugung des Etiketts 16 durch einen entsprechend gestalteten Kurvenabschnitt 41b der Steuerkurve 41 zurückbewegt. Unter den auf diese Weise von der Flaschenwand abgehobenen Abschnitt 16a des Etiketts 16 taucht durch Aktivierung des Linearantriebsmittels 24 im weiteren Verlauf der Kreisbahn 44 zunächst der Abstandhalter 31 ein. Danach erfaßt die Messerschneide 29 den abgehobenen Etikettenabschnitt 16a und durchtrennt bei der weiteren Aufwärtsbewegung das ganze Etikett 16 der Länge nach.The device works as follows:
The bottles 14 continuously transferred to the bottle table 8 by the inlet star 17 are clamped in a rotationally secure manner between the clamping head 7 and the centering head 9 during the rotation of the bottle table in the direction of arrow 44 by means of the lifting drive means 11 activated by the control cam 13.
In the further course of the circular path in the direction of arrow 44, the suction bar 36, which is acted upon by suction air, is displaced against the bottle wall by a correspondingly designed curve section 41a of the control curve 41 and is moved back by suction of the label 16 through a correspondingly designed curve section 41b of the control curve 41. The spacer 31 is initially immersed under the section 16a of the label 16 which is lifted off the bottle wall in this way by activating the linear drive means 24 in the further course of the circular path 44. Then the knife edge 29 detects the lifted label section 16a and cuts the entire label 16 lengthways with the further upward movement.

Die aufgetrennten Etiketten werden anschließend durch das relativ zu den Flaschen 14 schneller laufende Fördermittel 19 von den Flaschen abgezogen und beispielsweise durch Saugluftunterstützung abtransportiert.The separated labels are then pulled off the bottles by the conveyor 19 running faster relative to the bottles 14 and are transported away, for example, by suction air support.

Bei dem in Figur 5 dargestellten, abgewandelten Ausführungsbeispiel eines Erfassungsorgans sind Elemente, die denen der zu vor beschriebenen Anordnung entsprechen, mit um hundert erhöhten Bezugszahlen versehen und nicht noch einmal besonders erläutert.
Das Erfassungsorgan 132 besteht in diesem Fall aus zwei das Durchtrennungselement 123 parallel flankierenden, entgegengesetzt rotierenden, beispielsweise als Gummirollen ausgebildeten Reibrollen 146, welche das Etikett 116 im Bereich des Abschnitts 116a von der Flaschenwand zur Messerschneide 129 hin wegdrücken, so daß Abstandhalter 131 und Messerschneide 129 eintauchen können.In the modified exemplary embodiment of a detection element shown in FIG. 5, elements which correspond to those of the arrangement described above are provided with reference numbers increased by a hundred and are not explained again in particular.
In this case, the detection element 132 consists of two oppositely rotating friction rollers 146 flanking the severing element 123 in parallel, for example formed as rubber rollers, which press the label 116 away from the bottle wall towards the knife edge 129 in the region of the section 116a, so that the spacer 131 and the knife edge 129 can immerse.

Bei dem in den Figuren 6 und 7 dargestellten Ausführungsbeispiel einer Entetikettiervorrichtung sind Elemente, die denen des ersten Ausführungsbeispiels entsprechen, mit um zweihundert erhöhten Bezugszahlen versehen und nicht noch einmal besonders erläutert.
Diese Anordnung unterscheidet sich nur dadurch von der ersten Ausführungsform, daß die Flaschen 214 durchgehend in horizontaler Ausrichtung liegend gefördert werden, während auf gleiche Weise an ihnen die erforderlichen Arbeitsschritte zum lösen, Auftrennen und Entfernen des Etiketts vorgenommen werden. Die Flaschen werden mittels einer durch einen Motor 247 antreibbaren Doppelschnecke 248 zugeführt, deren Schneckenwendungen in Förderrichtung derart angeordnet sind, daß die Flaschen zunehmend auf den vorgegebenen Teilungsabstand der Vorrichtung gebracht werden.
Nach der Etikettenentfernung werden die liegend aufwärtsbewegten Flaschen auf gerader Förderbahn durch einen Transportbandförderer 249 von der Vorrichtung abgenommen.In the exemplary embodiment of a de-labeling device shown in FIGS. 6 and 7, elements which correspond to those of the first exemplary embodiment are provided with reference numbers increased by two hundred and are not explained again in particular.
This arrangement differs from the first embodiment only in that the bottles 214 are conveyed continuously in a horizontal orientation, while in the same way the necessary work steps for loosening, separating and removing the label are carried out on them. The bottles are fed by means of a twin screw 248 which can be driven by a motor 247, the screw turns of which are arranged in the conveying direction in such a way that the bottles are increasingly brought to the predetermined pitch of the device.
After the label has been removed, the bottles that are moved upwards in a lying position on a straight conveyor track are removed from the device by a conveyor belt conveyor 249.

Claims (10)

Vorrichtung zum Entfernen von Etiketten, Folien und dergleichen von im wesentlichen rotationssymmetrischen Behältern, insbesondere zum Ablösen von mittels einer Überlappungsnaht die Umfangsfläche von PET-Flaschen umspannenden Rundumetiketten, gekennzeichnet durch ein das Etikett (16) wenigstens in einem Teilbereich (16a) von der Behälterumfangsfläche abhebendes Erfassungsorgan (32) und ein mit diesem im Erfassungsbereich zusammenwirkendes, das abgehobene Etikett in Richtung der Behälterlängsachse hinterfassendes Durchtrennungselement (23).Device for removing labels, foils and the like from essentially rotationally symmetrical containers, in particular for detaching all-round labels spanning the peripheral surface of PET bottles by means of an overlap seam, characterized by a label (16) lifting off the container peripheral surface at least in a partial area (16a) Detection element (32) and a severing element (23) cooperating with it in the detection area and covering the lifted label in the direction of the longitudinal axis of the container. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Durchtrennungselement (23) eine schräg zur Behälterlängsachse verlaufende Messerschneide (29) aufweist, welcher ein zur Behälterwand gekröpfter, in Trennrichtung voreilender, das Etikett (16) unterlaufender Abstandhalter (31) zugeordnet ist.Apparatus according to claim 1, characterized in that the severing element (23) has a knife edge (29) which runs obliquely to the longitudinal axis of the container and which is assigned a spacer (31) which is cranked towards the container wall and leads in the separating direction and undershoots the label (16). Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Durchtrennungselement (23) in Richtung auf die Behälterumfangsfläche der Wirkung eines federelastischen Vorspanngliedes (28) ausgesetzt ist.Apparatus according to claim 1 or 2, characterized in that the severing element (23) is exposed to the action of a resilient prestressing member (28) in the direction of the peripheral surface of the container. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Durchtrennungselement (23) an einem parallel zur Behälterlängsachse verfahrbaren Linearantriebsmittel (22) drehgelenkig gelagert ist.Device according to one of claims 1 to 3, characterized in that the severing element (23) is pivotally mounted on a linear drive means (22) which can be moved parallel to the longitudinal axis of the container. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Erfassungsorgan (32) eine der Krümmung der Behälterumfangsfläche angepaßte, radial zu dieser zwischen einer Kontaktstellung und einer Abstandsstellung bewegbare Saugleiste (36) aufweist.Device according to one of claims 1 to 4, characterized in that the detection element (32) has a suction bar (36) which is adapted to the curvature of the peripheral surface of the container and can be moved radially therefrom between a contact position and a distance position. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Saugleiste (36) mit einer das Durchtrennungselement (23) aufnehmenden Durchgangsöffnung (37) versehen ist.Apparatus according to claim 5, characterized in that the suction bar (36) is provided with a through opening (37) receiving the severing element (23). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Erfassungsorgan (132) symmetrisch zum Durchtrennungselement (123) paarweise zusammenwirkende, gegensinnig antreibbare Reibrollen (146) aufweist.Apparatus according to claim 1, characterized in that the detection member (132) has friction rollers (146) which can be driven in opposite directions and work in pairs symmetrically to the severing element (123). Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Reibrollen (146) als Gummirollen ausgebildet sind.Apparatus according to claim 7, characterized in that the friction rollers (146) are designed as rubber rollers. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Etiketten (16) an in aufrechter Formation geförderten Behältern (14) durch eine vertikale Hubbewegung der Messerschneide (29) durchtrennt werden.Device according to one of claims 1 to 8, characterized in that the labels (16) on containers (14) conveyed in an upright formation are severed by a vertical lifting movement of the knife edge (29). Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Etiketten (216) an in liegender Formation geförderten Behältern (214) durch eine horizontale Hubbewegung der Messerschneide (229) durchtrennt werden.Device according to one of claims 1 to 8, characterized in that the labels (216) on containers (214) conveyed in a lying formation are severed by a horizontal lifting movement of the knife edge (229).
EP93108718A 1992-06-11 1993-05-29 Device for removing labels from containers Withdrawn EP0580985A1 (en)

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DE4219051A DE4219051C2 (en) 1992-06-11 1992-06-11 Device for removing labels from containers
DE4219051 1992-06-11

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Also Published As

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DE4219051C2 (en) 2002-09-19
JP3419500B2 (en) 2003-06-23
DE4219051A1 (en) 1993-12-16
JPH06106150A (en) 1994-04-19
US5372672A (en) 1994-12-13
CA2098156A1 (en) 1993-12-12

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