EP0463449B1 - Adjustable glue scraper for glue roller in a labelling machine - Google Patents

Adjustable glue scraper for glue roller in a labelling machine Download PDF

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Publication number
EP0463449B1
EP0463449B1 EP91109484A EP91109484A EP0463449B1 EP 0463449 B1 EP0463449 B1 EP 0463449B1 EP 91109484 A EP91109484 A EP 91109484A EP 91109484 A EP91109484 A EP 91109484A EP 0463449 B1 EP0463449 B1 EP 0463449B1
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EP
European Patent Office
Prior art keywords
glue
glue scraper
scraper
support member
adjusting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91109484A
Other languages
German (de)
French (fr)
Other versions
EP0463449A1 (en
Inventor
Rudolf Zodrow
Werner Nitschke
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.)
Eti Tec Maschinenbau GmbH
KHS ETI TEC Maschinenbau GmbH
Original Assignee
Eti Tec Maschinenbau GmbH
KHS ETI TEC Maschinenbau 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
Priority claimed from DE19904019409 external-priority patent/DE4019409A1/en
Application filed by Eti Tec Maschinenbau GmbH, KHS ETI TEC Maschinenbau GmbH filed Critical Eti Tec Maschinenbau GmbH
Publication of EP0463449A1 publication Critical patent/EP0463449A1/en
Application granted granted Critical
Publication of EP0463449B1 publication Critical patent/EP0463449B1/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • B65C9/20—Gluing the labels or articles
    • B65C9/22—Gluing the labels or articles by wetting, e.g. by applying liquid glue or a liquid to a dry glue coating
    • B65C9/2247—Gluing the labels or articles by wetting, e.g. by applying liquid glue or a liquid to a dry glue coating using liquid rollers or bands
    • B65C9/2269—Means for controlling the liquid film on the rollers
    • 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
    • B65C2009/0071—Details of glueing devices
    • B65C2009/0078—Constructional details of doctor blades
    • 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
    • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1798—Surface bonding means and/or assemblymeans with work feeding or handling means with liquid adhesive or adhesive activator applying means

Definitions

  • the invention relates to a glue scraper that can be adjusted to a glue roller in a labeling machine according to the preamble of claims 1 and 2.
  • Labeling machines for bottles known from practice have a glue scraper of the type mentioned at the outset in order to be able to adjust the thickness of the glue layer on the glue roller depending on the type of labels used for the labeling.
  • the setting of the glue scraper in an almost pressure-free system on the glue roller serves to make the glue roller glue-free when the labeling machine is idling, when no more glue is removed from the glue roller for the labels.
  • DE-U-8 706 761 discloses a glue scraper which can be adjusted to a glue roller in a labeling machine and which can be pivoted with a carrier on a shaft is stored.
  • the carrier of the glue scraper is spring-loaded in the direction of a stop fixed to the frame, set to a minimum gap width of the glue scraper with respect to the glue roller, and a parallel fixed stop is provided parallel to this stop, on which the carrier can be supported via an actuator with a constant travel.
  • the invention has for its object to take precautions with a glue scraper of the type mentioned, which allow a change of the glue scraper during operation.
  • the actuator is designed as a multi-stage actuating device, which actuating device is a cylinder piston unit having a plurality of actuating cylinders with actuating cylinders connected in series or in parallel.
  • a two-part glue scraper that the two carriers are coupled to one another via such a one-way driving device, that when one actuator is actuated, the carrier assigned to this actuator takes the other one along, or with the two carriers using a double-acting driving device are coupled to one another with such a limited idle stroke that the driving device responds only in part of the actuating range of the actuators and the actuator is designed as at least one glue scraper part as a multistage actuating device, the actuating device having a plurality of actuating cylinders.
  • the driving device can be constructed in a simple manner with a driver held on a carrier and an abutment held by the other carrier.
  • the solution according to the invention can be implemented both with a limited idle stroke and without an idle stroke. Without an idle stroke, the control of an actuator leads to the same gap width settings of the scraper parts on the glue roller, with the limited idle stroke different gap widths are possible. In any case, however, the driving device does not hinder the independent actuation of the two actuators in order to also set different operating positions with one another.
  • the actuating device can either be a cylinder-piston unit with actuating cylinders connected in series, preferably from the actuating cylinders an actuating cylinder with its piston rod acts on the piston of another actuating cylinder, which has a larger stroke than the first actuating cylinder, or a cylinder-piston unit with actuating cylinders arranged in parallel with one another strokes of different sizes or a combination of these cylinder piston units.
  • the two-stage setting device it is possible to adjust the glue scraper parts to different operating positions during operation in order to take into account the performance-dependent flattening of the elastic glue roller. In this way, the glue scrapers are brought into a first position with low output. If the machine is then started up to high power, the adjusting device moves the glue scraper further towards the glue roller, so that the glue gap at high power is essentially equal to the glue gap at low power.
  • the actuating device has two cylinder piston units connected in parallel, each with series-connected actuating cylinders with different stroke lengths, this actuating device offers five different setting options, namely the position of the glue scraper in an almost pressure-free system on the glue roller and four positions for different gap widths.
  • the driving device can be constructed in a simple manner with a driver held on a carrier and an abutment held by the other carrier.
  • the solution according to the invention can be implemented both with an idle stroke and without an idle stroke. Leads without idle stroke the control of an actuator to the same gap width settings of the doctor parts on the glue roller, with idle stroke to different gap widths. In any case, however, the driving device does not hinder the independent actuation of the two actuators in order to set different gap widths.
  • the flexibility of the glue scraper for setting to different gap widths can be further improved in that the driving device has an adjustable idle stroke.
  • the two carriers are coupled to one another by means of a double-acting entrainment device with such an idle stroke that the entrainment device does not respond in the actuating range of the actuators.
  • a double-acting driving device can, however, also be provided as an alternative to the single-acting driving device.
  • Such a driving device allows both scraper parts to be adjusted either with one or the other actuator, which is only possible with one driver acting on one side with one of the two actuators.
  • each stop set to the minimum gap width of the associated glue scraper part can be achieved according to one embodiment of the invention by a pressure piece acting on a wedge surface.
  • a carrier 3 carrying a one-piece glue scraper 2 is pivotably mounted on a shaft 1.
  • the carrier 3 carries on lever arms 4, 5 actuators 6, 7 in the form of independently of each other pressure-operated actuating cylinders, which are supported on adjustable stops 8, 9 in the extended state.
  • These stops 8, 9, which can be adjusted by means of rotary knobs 8a, 9a, are carried by a holder 10, which is adjusted below the glue scraper 2 on the shaft 1 with a screw 11 in a frame-fixed manner.
  • the two actuators 6, 7 designed as hydraulic actuating cylinders are designed for different strokes, so that when one actuator 6 is acted upon, the glue scraper 2 is set to a first gap width and by acting on the second actuator 7 the glue scraper 2 is adjusted to a second different gap width.
  • the same result can also be achieved with the same strokes by setting the stops 8, 9 differently.
  • two actuators 26, 27 arranged one behind the other can also be provided in accordance with FIGS. 4a to 4c.
  • the two actuators 26, 27 designed as actuating cylinders like the actuators 6, 7 of the first exemplary embodiment, can be pressurized independently of one another.
  • Each actuating cylinder 26, 27 has a piston 26 ′′, 27 ′′ supported on a spring 26 ′, 27 ′.
  • the piston rod 27 '' 'of the actuating cylinder 27 acts on the piston 26' 'of the actuating cylinder 26, while the piston rod 26' '' forms the stop 28 of the actuator.
  • the two actuating cylinders 26, 27 are designed so that the actuating cylinder 27 has a greater stroke than the actuating cylinder 26.
  • actuating cylinders 26, 27 connected in series can, however, also replace each of the actuating cylinders 6, 3 of exemplary embodiment 3, in which case the actuating cylinders 26 on the one hand and the actuating cylinders 27 on the other hand have different strokes.
  • Such training serves to multiply the possibilities for placement.
  • a lever 29 is fastened to the carrier 3. So that the glue scraper 2 is not pivoted too far when the lever 29 is actuated, the holder 10 fixed to the frame carries a stop pin 30.
  • FIGS. 5 to 7 differs from the described embodiment essentially in that the glue scraper consists of two there are parts arranged one above the other, each with its own carrier 3a, 3b, and the two carriers 3a, 3b are coupled via a single-acting and / or bilateral driving device 21 to 22a, 24, 25. It is therefore sufficient for an understanding of the exemplary embodiment with the divided glue scraper if the further description is restricted to these differences.
  • a lever 21 attached to the carrier 3a forms a one-sided driver, at the end of which there is an adjustable abutment 21a. Adjacent to it, attached to a lever arm 22 of the carrier 3b, is an adjusting screw 22a.
  • the driver designed as a lever 21 and the lever arm form a driver device which is effective on one side between the glue scraper parts.
  • the function of the one-sided driving device 21 to 22a is as follows: If the actuator 6 is pressurized when the actuator 7 is depressurized, it pivots the support 3a and thus also the lever 21 acting as a driver 21, supported by the adjustable stop 8. As soon as the lever 21 strikes the adjusting screw 22a with the abutment 21a, the support 3b is also pivoted via the lever arm 22. The gap width of the glue scraper parts on the glue roller 20 depends on the set idle stroke. The carrier 3b can then be pivoted further by pressurizing the actuator 7. In the two possible extreme cases in one case the carrier 3b is taken along at the same time and in the other case not at all. In the latter case, the pivoting movements of the two glue scraper parts are completely independent of one another.
  • FIG. 5 shows a driver device acting on both sides. It consists of a pin 24, which is firmly inserted on the carrier 3a, and a bore 25 in the carrier 3b, in which the pin 24 engages with play.
  • the size of the bore 25 is dimensioned so that a limited independent adjustment of the scraper parts is possible.
  • the function corresponds to the one-sided entrainment device, but in this case the common movement can be carried out either by the actuator 7 or by the actuator 6.
  • the driving device 24, 25 acting on both sides can be provided in addition to the driving device 21 to 22a. In this case, it serves to carry the lower carrier 3a with the lower scraper part when both scraper parts are to be pivoted away from the glue roller 20 and subsequently pivoted back again by means of the lever 2a attached to the carrier 3b of the upper scraper part.
  • a pin 29 prevents pivoting too far.
  • the actuators 6, 7 are each designed as two-stage adjusting devices arranged in parallel or one behind the other, as shown in FIGS. 4a to 4c.

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  • Coating Apparatus (AREA)
  • Package Closures (AREA)
  • Labeling Devices (AREA)

Description

Die Erfindung bezieht sich auf einen an eine Leimwalze anstellbaren Leimschaber in einer Etikettiermaschine gemäß Oberbegriff der Ansprüche 1 und 2.The invention relates to a glue scraper that can be adjusted to a glue roller in a labeling machine according to the preamble of claims 1 and 2.

Aus der Praxis bekannte Etikettiermaschine für Flaschen weisen einen Leimschaber der eingangs genannten Art auf, um damit die Leimschichtdicke auf der Leimwalze in Abhängigkeit von der Art der für die Etikettierung verwendeten Etiketten einstellen zu können. Die Einstellung des Leimschabers in nahezu druckloser Anlage an der Leimwalze dient dazu, bei Leerlauf der Etikettiermaschine, wenn kein Leim mehr von der Leimwalze für die Etiketten abgenommen wird, die Leimwalze leimfrei zu machen.Labeling machines for bottles known from practice have a glue scraper of the type mentioned at the outset in order to be able to adjust the thickness of the glue layer on the glue roller depending on the type of labels used for the labeling. The setting of the glue scraper in an almost pressure-free system on the glue roller serves to make the glue roller glue-free when the labeling machine is idling, when no more glue is removed from the glue roller for the labels.

In der Praxis hat sich nun gezeigt, daß die Einstellung der für ein bestimmtes Etikett optimalen Spaltweite von der Leistung der Etikettiermaschine abhängt. Bei schnellaufender Etikettiermaschine bewirkt der Leimstau vor dem Leimschaber eine Abplattung des elastischen Mantels der Leimwalze mit der Folge, daß die Spaltweite gegenüber den Verhältnissen bei einer langsamer laufenden Etikettiermaschine vergrößert ist. Das führt zu einem unterschiedlich dicken Leimfilm auf der Leimwalze. Das bedeutet wiederum, daß die Beleimungsverhältnisse bei den verschiedenen Leistungen nicht optimal sind.In practice it has now been shown that the setting of the optimal gap width for a particular label depends on the performance of the labeling machine. In the case of a high-speed labeling machine, the glue build-up in front of the glue scraper causes the elastic jacket of the glue roller to flatten, with the result that the gap width is increased compared to the conditions with a slow-running labeling machine. This leads to a differently thick glue film on the glue roller. This in turn means that the gluing ratios are not optimal for the various services.

Die DE-U-8 706 761 offenbart einen an eine Leimwalze anstellbaren Leimschaber in einer Etikettiermaschine, der mit einem Träger auf einer Welle verschwenkbar gelagert ist. Der Träger des Leimschabers ist in Richtung eines gestellfesten, auf minimale Spaltweite des Leimschabers gegenüber der Leimwalze eingestellten Anschlages federbelastet und parallel zu diesem Anschlag ist ein weiterer gestellfester Anschlag vorgesehen, an dem der Träger über ein Stellglied mit konstantem Stellweg abstützbar ist.DE-U-8 706 761 discloses a glue scraper which can be adjusted to a glue roller in a labeling machine and which can be pivoted with a carrier on a shaft is stored. The carrier of the glue scraper is spring-loaded in the direction of a stop fixed to the frame, set to a minimum gap width of the glue scraper with respect to the glue roller, and a parallel fixed stop is provided parallel to this stop, on which the carrier can be supported via an actuator with a constant travel.

Der Erfindung liegt die Aufgabe zugrunde, bei einem Leimschaber der eingangs genannten Art Vorkehrungen zu treffen, die im Betrieb eine Umstellung des Leimschabers erlauben.The invention has for its object to take precautions with a glue scraper of the type mentioned, which allow a change of the glue scraper during operation.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Stellglied als mehrstafig wirkende Stellvorrichtung ausgebildet ist, wobei diese Stellvorrichtung eine mehrere Stellzylinder aufweisende Zylinderkolbeneinheit mit in Reihe oder parallel geschalteten Stellzylindern ist.This object is achieved in that the actuator is designed as a multi-stage actuating device, which actuating device is a cylinder piston unit having a plurality of actuating cylinders with actuating cylinders connected in series or in parallel.

In selbständiger Ausbildung der Erfindung wird bei einem zweiteiligen Leimschaber vorgeschlagen, daß die beiden Träger über eine solche einseitig wirkende Mitnahmevorrichtung miteinander gekoppelt sind, daß bei Ansteuerung eines Stellgliedes der diesem Stellglied zugeordnete Träger den anderen mitnimmt, oder wobei die beiden Träger über eine zweiseitig wirkende Mitnahmevorrichtung mit einem solchen begrenzten Leerhub miteinander gekoppelt sind, daß die Mitnahmevorrichtung nur in einem Teil des Stellbereichs der Stellglieder anspricht und das Stellglied mindestens eines Leimschaberteils als mehrstufig wirkende Stellvorrichtung ausgebildet ist, wobei die Stellvorrichtung mehrere Stellzylinder aufweist.In an independent embodiment of the invention, it is proposed with a two-part glue scraper that the two carriers are coupled to one another via such a one-way driving device, that when one actuator is actuated, the carrier assigned to this actuator takes the other one along, or with the two carriers using a double-acting driving device are coupled to one another with such a limited idle stroke that the driving device responds only in part of the actuating range of the actuators and the actuator is designed as at least one glue scraper part as a multistage actuating device, the actuating device having a plurality of actuating cylinders.

Konstruktiv läßt sich die Mitnahmevorrichtung auf einfache Art und Weise mit einem an einem Träger gehaltenen Mitnehmer und einem vom anderen Träger gehaltenen Widerlager verwirklichen.The driving device can be constructed in a simple manner with a driver held on a carrier and an abutment held by the other carrier.

Die erfindungsgemäße Lösung läßt sich sowohl mit einem begrenzten Leerhub als auch ohne Leerhub verwirklichen. Ohne Leerhub führt die Ansteuerung eines Stellgliedes zu gleichen Spaltweiteneinstellungen der Schaberteile an der Leimwalze, mit dem begrenzten Leerhub sind unterschiedliche Spaltweiten möglich. In jedem Fall behindert aber die Mitnahmevorrichtung nicht die unabhängige Betätigung der beiden Stellglieder, um verschiedene Betriebsstellungen auch untereinander einzustellen.The solution according to the invention can be implemented both with a limited idle stroke and without an idle stroke. Without an idle stroke, the control of an actuator leads to the same gap width settings of the scraper parts on the glue roller, with the limited idle stroke different gap widths are possible. In any case, however, the driving device does not hinder the independent actuation of the two actuators in order to also set different operating positions with one another.

Die Stellvorrichtung kann entweder eine Zylinderkolbeneinheit mit in Reihe geschalteten Stellzylindern sein, wobei vorzugsweise von den Stellzylindern ein Stellzylinder mit seiner Kolbenstange auf den Kolben eines anderen Stellzylinders einwirkt, der gegenüber dem ersten Stellzylinder den größeren Hub hat, oder eine Zylinderkolbeneinheit mit parallel zueinander angeordneten Stellzylindern mit verschieden großen Hüben umfassen oder eine Kombination dieser Zylinderkolbeneinheiten.The actuating device can either be a cylinder-piston unit with actuating cylinders connected in series, preferably from the actuating cylinders an actuating cylinder with its piston rod acts on the piston of another actuating cylinder, which has a larger stroke than the first actuating cylinder, or a cylinder-piston unit with actuating cylinders arranged in parallel with one another strokes of different sizes or a combination of these cylinder piston units.

Wegen der Zweistufigkeit der Stellvorrichtung ist es möglich, bei laufendem Betrieb die Leimschaberteile auf unterschiedliche Betriebsstellungen einzustellen, um die leistungsabhängige Abplattung der elastischen Leimwalze zu berücksichtigen. So werden bei kleiner Leistung die Leimschaber in eine erste Stellung gebracht. Wird die Maschine dann hochgefahren auf hohe Leistung, bewegt die Stellvorrichtung den Leimschaber weiter auf die Leimwalze zu, so daß der Leimspalt bei hoher Leistung im wesentlichen gleich dem Leimspalt bei kleiner Leistung ist.Because of the two-stage setting device, it is possible to adjust the glue scraper parts to different operating positions during operation in order to take into account the performance-dependent flattening of the elastic glue roller. In this way, the glue scrapers are brought into a first position with low output. If the machine is then started up to high power, the adjusting device moves the glue scraper further towards the glue roller, so that the glue gap at high power is essentially equal to the glue gap at low power.

Sofern die Stellvorrichtung zwei parallel geschaltete Zylinderkolbeneinheiten mit jeweils in Reihe geschalteten Stellzylindern mit verschieden großem Hub hat, bietet diese Stellvorrichtung fünf verschiedene Stellmöglichkeiten, und zwar die Stellung des Leimschabers in nahezu druckloser Anlage an der Leimwalze und vier Stellungen für unterschiedliche Spaltweiten.If the actuating device has two cylinder piston units connected in parallel, each with series-connected actuating cylinders with different stroke lengths, this actuating device offers five different setting options, namely the position of the glue scraper in an almost pressure-free system on the glue roller and four positions for different gap widths.

Manchmal besteht auch die Forderung, unterschiedliche Leimschichtdicken an der Leimwalze einzustellen, wenn unterschiedliche Etiketten gleichzeitig verarbeitet werden sollen. Im Stand der Technik wird dies mittels eines geteilten Leimschabers verwirklicht, für dessen beide Teile jeweils eigene Stellglieder vorgesehen sind. Das bedeutet, daß in jedem Fall sowohl für gleiche als auch ungleiche Spaltweiten beide Stellglieder betätigt werden müssen. Um den erforderlichen vorrichtungstechnischen Aufwand zu vermindern, ist nach einer weiteren Ausgestaltung der Erfindung vorgesehen, daß bei einem zweiteilig ausgebildeten Leimschaber, dessen beide Teile mit jeweils eigenem Träger auf der Welle übereinander verschwenkbar gelagert sind, die beiden Träger über eine solche einseitig wirkende Mitnahmevorrichtung miteinander gekoppelt sind, daß bei Ansteuerung eines Stellgliedes der diesem Stellglied zugeordnete Träger den anderen mitnimmt.Sometimes there is also a requirement to set different glue layer thicknesses on the glue roller if different labels are to be processed at the same time. In the prior art, this is achieved by means of a divided glue scraper, for each of which separate actuators are provided. This means that both actuators must be actuated in both cases for the same and unequal gap widths. In order to reduce the required outlay in terms of device technology, according to a further embodiment of the invention it is provided that, in the case of a two-part glue scraper, the two parts of which are each mounted on the shaft so as to be pivotable one above the other, the two carriers are coupled to one another via such a one-way driving device are that when one actuator is actuated, the carrier assigned to this actuator takes the other one along.

Konstruktiv läßt sich die Mitnahmevorrichtung auf einfache Art und Weise mit einem an einem Träger gehaltenen Mitnehmer und einem vom anderen Träger gehaltenen Widerlager verwirklichen.The driving device can be constructed in a simple manner with a driver held on a carrier and an abutment held by the other carrier.

Die erfindungsgemäße Lösung läßt sich sowohl mit Leerhub als auch ohne Leerhub verwirklichen. Ohne Leerhub führt die Ansteuerung eines Stellgliedes zu gleichen Spaltweiteneinstellungen der Schaberteile an der-Leimwalze, mit Leerhub zu unterschiedlichen Spaltweiten. In jedem Fall behindert aber die Mitnahmevorrichtung nicht die unabhängige Betätigung der beiden Stellglieder, um verschiedene Spaltweiten einzustellen.The solution according to the invention can be implemented both with an idle stroke and without an idle stroke. Leads without idle stroke the control of an actuator to the same gap width settings of the doctor parts on the glue roller, with idle stroke to different gap widths. In any case, however, the driving device does not hinder the independent actuation of the two actuators in order to set different gap widths.

Die Flexibilität des Leimschabers für die Einstellung auf unterschiedliche Spaltweiten kann noch dadurch verbessert werden, daß die Mitnahmevorrichtung einen einstellbaren Leerhub aufweist.The flexibility of the glue scraper for setting to different gap widths can be further improved in that the driving device has an adjustable idle stroke.

Für Wartungszwecke ist es von Vorteil, wenn die beiden Träger über eine zweiseitig wirkende Mitnahmevorrichtung mit einem solchen Leerhub miteinander gekoppelt sind, daß die Mitnahmevorrichtung nicht im Stellbereich der Stellglieder anspricht. In einem solchen Fall sollte an einem Träger ein Handhebel sein, mit dem die gesamte Schabereinheit aus der Betriebsstellung bzw. aus der Leerlaufstellung heraus in die Wartungsstellung zurückgeschwenkt werden kann. Eine solche zweiseitig wirkende Mitnahmevorrichtung kann allerdings auch alternativ zur einseitig wirkenden Mitnahmevorrichtung vorgesehen sein. Eine solche Mitnahmevorrichtung erlaubt es, wahlweise mit dem einen oder anderen Stellglied beide Schaberteile zu verstellen, was bei einem einseitig wirkenden Mitnehmer nur mit einem der beiden Stellglieder möglich ist.For maintenance purposes, it is advantageous if the two carriers are coupled to one another by means of a double-acting entrainment device with such an idle stroke that the entrainment device does not respond in the actuating range of the actuators. In such a case there should be a hand lever on a carrier with which the entire scraper unit can be pivoted back out of the operating position or out of the idle position into the maintenance position. Such a double-acting driving device can, however, also be provided as an alternative to the single-acting driving device. Such a driving device allows both scraper parts to be adjusted either with one or the other actuator, which is only possible with one driver acting on one side with one of the two actuators.

Die Federbelastung eines jeden, auf minimale Spaltweite des zugehörigen Leimschaberteils eingestellten Anschlages läßt sich nach einer Ausgestaltung der Erfindung durch ein auf eine Keilfläche wirkendes Druckstück verwirklichen.The spring loading of each stop set to the minimum gap width of the associated glue scraper part can be achieved according to one embodiment of the invention by a pressure piece acting on a wedge surface.

Im folgenden wird die Erfindung anhand einer Ausführungsbeispiele darstellenden Zeichnung näher erläutert:The invention is explained in more detail below with reference to a drawing showing exemplary embodiments:

Im einzelnen zeigen:

Fig. 1
einen einteiligen Leimschaber in einer Leimwalze in Vorderansicht,
Fig. 2
eine Stellvorrichtung für einen Leimschaber gemäß Fig. 1 in Vorderansicht,
Fig. 3
den Leimschaber mit Leimwalze gemäß Fig. 1 und Stellvorrichtung gemäß Fig. 2 in Aufsicht und teilweise im Schnitt,
Fig. 4
die Stellvorrichtung für den Leimschaber gemäß Fig. 2 in Seitenansicht aus Richtung des Pfeiles A der Fig. 2,
Fig. 4 a-c
die Stellvorrichtung gemäß Fig. 3 in Aufsicht und teilweise im Schnitt in verschiedenen Einstellungen,
Fig. 5
eine Stellvorrichtung für einen zweiteiligen Leimschaber in Vorderansicht entsprechend der Darstellung gemäß Fig. 4,
Fig. 6
eine Stellvorrichtung für den zweiteiligen Leimschaber gemäß Fig. 5 in Seitenansicht entsprechend der Darstellung der Fig. 4
und
Figur 7
die Stellvorrichtung gemäß Figur 6 im Schnitt nach der Linie I-I der Figur 6.
In detail show:
Fig. 1
a one-piece glue scraper in a glue roller in front view,
Fig. 2
2 shows an adjusting device for a glue scraper according to FIG. 1 in front view,
Fig. 3
the glue scraper with glue roller according to FIG. 1 and adjusting device according to FIG. 2 in supervision and partly in section,
Fig. 4
2 in side view from the direction of arrow A in FIG. 2,
Fig. 4 ac
3 in supervision and partly in section in different settings,
Fig. 5
4 shows an adjusting device for a two-part glue scraper in a front view corresponding to the illustration according to FIG. 4,
Fig. 6
5 shows a setting device for the two-part glue scraper according to FIG. 5 in a side view corresponding to the illustration in FIG. 4
and
Figure 7
6 in section along the line II of FIG. 6.

Auf einer Welle 1 ist ein einen einteiligen Leimschaber 2 tragender Träger 3 schwenkbar gelagert. Der Träger 3 trägt auf Hebelarmen 4, 5 Stellglieder 6, 7 in Form von unabhängig voneinander druckbetriebenen Stellzylindern, die sich im ausgefahrenen Zustand an einstellbaren Anschlägen 8, 9 abstützen. Diese mittels Drehknöpfen 8a, 9a einstellbaren Anschläge 8, 9 sind von einer Halterung 10 getragen, die unterhalb des Leimschabers 2 gestellfest auf der Welle 1 mit einer Schraube 11 justiert ist. Neben den Anschlägen 8, 9 auf der Halterung 10 angeordnete Stellschrauben 13, 14 bilden Anschläge für neben den Stellgliedern 6, 7 auf den Hebelarmen 4, 5 angeordnete Bolzen 15, 16, so daß mit ihnen bei nicht betätigten Stellzylindern 26/27 für den Leerlaufbetrieb die Verschwenkung der Träger 4, 5 auf kleinste Spaltweite voreingestellt werden kann, wobei der Leimschaber 2 praktisch drucklos an der Leimwalze 19 anliegt. Dazu greifen in eine keilförmige Kerbe 15a, 16a der Bolzen 15, 16 Kugeln federnder Druckstücke 17, 18 so ein, daß es zu einer Krafteinleitung entgegen der Kraftrichtung der Stellglieder 6, 7 kommt. Auf diese Weise wird nach Druckentlastung der Träger 3 selbsttätig in die Leerlaufposition bis an die Anschläge 8, 9 zurückgeschwenkt. Darüber hinaus hat die so erzeugte Kraft eine stabilisierende Wirkung auf die durch den inhomogenen Leim verursachte, unstetige Kraftentwicklung zwischen dem Leimschaber 2 und einer Leimwalze 19.On a shaft 1, a carrier 3 carrying a one-piece glue scraper 2 is pivotably mounted. The carrier 3 carries on lever arms 4, 5 actuators 6, 7 in the form of independently of each other pressure-operated actuating cylinders, which are supported on adjustable stops 8, 9 in the extended state. These stops 8, 9, which can be adjusted by means of rotary knobs 8a, 9a, are carried by a holder 10, which is adjusted below the glue scraper 2 on the shaft 1 with a screw 11 in a frame-fixed manner. In addition to the stops 8, 9 arranged on the bracket 10 adjusting screws 13, 14 form stops for arranged next to the actuators 6, 7 on the lever arms 4, 5 bolts 15, 16, so that with them when the actuating cylinders 26/27 are not actuated for idling operation the pivoting of the carriers 4, 5 can be preset to the smallest gap width, the glue scraper 2 lying practically without pressure on the glue roller 19. For this purpose, engage in a wedge-shaped notch 15a, 16a of the bolts 15, 16 balls of resilient pressure pieces 17, 18 in such a way that force is introduced counter to the force direction of the actuators 6, 7. In this way, after relieving pressure, the carrier 3 is automatically pivoted back into the idling position up to the stops 8, 9. In addition, the force generated in this way has a stabilizing effect on the unsteady force development caused by the inhomogeneous glue between the glue scraper 2 and a glue roller 19.

Die beiden als hydraulische Stellzylinder ausgebildeten Stellglieder 6, 7 sind für unterschiedlichen Hub ausgelegt, so daß bei Beaufschlagung des einen Stellgliedes 6 der Leimschaber 2 auf eine erste Spaltweite und durch Beaufschlagung des zweiten Stellgliedes 7 der Leimschaber 2 auf eine zweite andere Spaltweite eingestellt wird. Das gleiche Ergebnis kann bei gleichen Hüben auch durch unterschiedliche Einstellung der Anschläge 8, 9 erreicht werden.The two actuators 6, 7 designed as hydraulic actuating cylinders are designed for different strokes, so that when one actuator 6 is acted upon, the glue scraper 2 is set to a first gap width and by acting on the second actuator 7 the glue scraper 2 is adjusted to a second different gap width. The same result can also be achieved with the same strokes by setting the stops 8, 9 differently.

Alternativ können statt der beiden parallel arbeitenden Stellglieder 6, 7 auch zwei hintereinander angeordnete Stellglieder 26, 27 entsprechend den Fig. 4a bis 4c vorgesehen sein. Die beiden als Stellzylinder ausgebildeten Stellglieder 26, 27 sind wie die Stellglieder 6, 7 des ersten Ausführungsbeispiels unabhängig voneinander mit Druck beaufschlagbar. Jeder Stellzylinder 26, 27 weist einen an einer Feder 26', 27' abgestützten Kolben 26'', 27'' auf. Die Kolbenstange 27''' des Stellzylinders 27 wirkt auf den Kolben 26'' des Stellzylinders 26 ein, während die Kolbenstange 26''' den Anschlag 28 des Stellgliedes bildet. Die beiden Stellzylinder 26, 27 sind so ausgelegt, daß der Stellzylinder 27 einen größeren Hub als der Stellzylinder 26 hat.Alternatively, instead of the two actuators 6, 7 operating in parallel, two actuators 26, 27 arranged one behind the other can also be provided in accordance with FIGS. 4a to 4c. The two actuators 26, 27 designed as actuating cylinders, like the actuators 6, 7 of the first exemplary embodiment, can be pressurized independently of one another. Each actuating cylinder 26, 27 has a piston 26 ″, 27 ″ supported on a spring 26 ′, 27 ′. The piston rod 27 '' 'of the actuating cylinder 27 acts on the piston 26' 'of the actuating cylinder 26, while the piston rod 26' '' forms the stop 28 of the actuator. The two actuating cylinders 26, 27 are designed so that the actuating cylinder 27 has a greater stroke than the actuating cylinder 26.

Diese in Reihe geschalteten Stellzylinder 26, 27 können allerdings auch jeden der Stellzylinder 6, 3 des Ausführungsbeispiels 3 ersetzen, wobei dann die Stellzylinder 26 einerseits und die Stellzylinder 27 andererseits unterschiedliche Hübe haben. Eine solche Ausbildung dient zur Vervielfältigung der Stellmöglichkeiten.These actuating cylinders 26, 27 connected in series can, however, also replace each of the actuating cylinders 6, 3 of exemplary embodiment 3, in which case the actuating cylinders 26 on the one hand and the actuating cylinders 27 on the other hand have different strokes. Such training serves to multiply the possibilities for placement.

Um für Reinigungszwecke den Leimschaber 2 aus seiner Leerlaufposition in eine weit abgeschwenkte Position zu bringen, ist am Träger 3 ein Hebel 29 befestigt. Damit bei Betätigung des Hebels 29 der Leimschaber 2 nicht zu weit verschwenkt wird, trägt die gestellfeste Halterung 10 einen Anschlagstift 30.In order to bring the glue scraper 2 out of its idle position into a far swung position for cleaning purposes, a lever 29 is fastened to the carrier 3. So that the glue scraper 2 is not pivoted too far when the lever 29 is actuated, the holder 10 fixed to the frame carries a stop pin 30.

Das Ausführungsbeispiel der Fig. 5 bis 7 unterscheidet sich von dem beschriebenen Ausführungsbeispiel im wesentlichen dadurch, daß der Leimschaber aus zwei übereinander angeordneten Teilen mit jeweils eigenem Träger 3a, 3b besteht und die beiden Träger 3a, 3b über eine einseitig wirkende und/oder beidseitig wirkende Mitnahmevorrichtung 21 bis 22a, 24, 25 gekoppelt sind. Deshalb reicht es für das Verständnis des Ausführungsbeispiels mit dem geteilten Leimschaber aus, wenn die weitere Beschreibung auf diese Unterschiede beschränkt wird.The embodiment of FIGS. 5 to 7 differs from the described embodiment essentially in that the glue scraper consists of two there are parts arranged one above the other, each with its own carrier 3a, 3b, and the two carriers 3a, 3b are coupled via a single-acting and / or bilateral driving device 21 to 22a, 24, 25. It is therefore sufficient for an understanding of the exemplary embodiment with the divided glue scraper if the further description is restricted to these differences.

Ein am Träger 3a angebrachter Hebel 21 bildet einen einseitig wirkenden Mitnehmer, an dessen Ende sich ein einstellbares Widerlager 21a befindet. Ihm benachbart, an einem Hebelarm 22 des Trägers 3b befestigt, liegt eine Justierschraube 22a. Der als Hebel 21 ausgebildete Mitnehmer und der Hebelarm bilden eine zwischen den Leimschaberteilen einseitig wirksame Mitnahmevorrichtung. Mit der Justierschraube 22a und dem Widerlager 21a läßt sich der Leerhub und somit die spätere relative Verdrehung zwischen den Trägern 3a, 3b und damit auch der Schaberteile sowie auch die Spaltweite zwischen der Leimwalze 20 und den Schaberteilen einstellen.A lever 21 attached to the carrier 3a forms a one-sided driver, at the end of which there is an adjustable abutment 21a. Adjacent to it, attached to a lever arm 22 of the carrier 3b, is an adjusting screw 22a. The driver designed as a lever 21 and the lever arm form a driver device which is effective on one side between the glue scraper parts. With the adjusting screw 22a and the abutment 21a, the idle stroke and thus the later relative rotation between the carriers 3a, 3b and thus also the scraper parts and also the gap width between the glue roller 20 and the scraper parts can be adjusted.

Die Funktion der einseitig wirkenden Mitnahmevorrichtung 21 bis 22a ist folgende: Wird bei drucklosem Stellglied 7 das Stellglied 6 mit Druck beaufschlagt, verschwenkt es unter Abstützung an dem einstellbaren Anschlag 8 den Träger 3a und damit auch den als Mitnehmer wirkenden Hebel 21. Sobald der Hebel 21 mit dem Widerlager 21a auf die Justierschraube 22a trifft, wird über den Hebelarm 22 auch der Träger 3b verschwenkt. Von dem eingestellten Leerhub hängt die Spaltweite der Leimschaberteile an der Leimwalze 20 ab. Anschließend kann durch Druckbeaufschlagung des Stellgliedes 7 der Träger 3b weiterverschwenkt werden. In den beiden möglichen Extremfällen wird in einem Fall der Träger 3b gleichzeitig mitgenommen und im anderen Fall überhaupt nicht. Im letzteren Fall sind die Verschwenkbewegungen beider Leimschaberteile völlig unabhängig voneinander.The function of the one-sided driving device 21 to 22a is as follows: If the actuator 6 is pressurized when the actuator 7 is depressurized, it pivots the support 3a and thus also the lever 21 acting as a driver 21, supported by the adjustable stop 8. As soon as the lever 21 strikes the adjusting screw 22a with the abutment 21a, the support 3b is also pivoted via the lever arm 22. The gap width of the glue scraper parts on the glue roller 20 depends on the set idle stroke. The carrier 3b can then be pivoted further by pressurizing the actuator 7. In the two possible extreme cases in one case the carrier 3b is taken along at the same time and in the other case not at all. In the latter case, the pivoting movements of the two glue scraper parts are completely independent of one another.

In Fig. 5 ist auch eine beidseitig wirkende Mitnahmevorrichtung dargestellt. Sie besteht aus einem Stift 24, der fest am Träger 3a eingefügt ist, und aus einer Bohrung 25 im Träger 3b, in die der Stift 24 mit Spiel eingreift. Die Größe der Bohrung 25 ist so bemessen, daß eine begrenzte unabhängige Verstellung der Schaberteile möglich ist. Die Funktion entspricht der einseitigen Mitnahmevorrichtung, wobei allerdings in diesem Fall die gemeinsame Bewegung entweder vom Stellglied 7 oder vom Stellglied 6 ausgeführt werden kann.5 shows a driver device acting on both sides. It consists of a pin 24, which is firmly inserted on the carrier 3a, and a bore 25 in the carrier 3b, in which the pin 24 engages with play. The size of the bore 25 is dimensioned so that a limited independent adjustment of the scraper parts is possible. The function corresponds to the one-sided entrainment device, but in this case the common movement can be carried out either by the actuator 7 or by the actuator 6.

Die beidseitig wirkende Mitnahmevorrichtung 24, 25 kann zusätzlich zu der Mitnahmevorrichtung 21 bis 22a vorgesehen sein. In diesem Fall dient sie dazu, den unteren Träger 3a mit dem unteren Schaberteil mitzunehmen, wenn mittels des am Träger 3b des oberen Schaberteils befestigten Hebels 2a beide Schaberteile zum Beispiel für Reinigungszwecke von der Leimwalze 20 weggeschwenkt und anschließend wieder zurückgeschwenkt werden sollen. Ein Stift 29 verhindert eine zu weite Verschwenkung.The driving device 24, 25 acting on both sides can be provided in addition to the driving device 21 to 22a. In this case, it serves to carry the lower carrier 3a with the lower scraper part when both scraper parts are to be pivoted away from the glue roller 20 and subsequently pivoted back again by means of the lever 2a attached to the carrier 3b of the upper scraper part. A pin 29 prevents pivoting too far.

Es versteht sich, daß auch bei dem zweiteiligen Leimschaber die Stellglieder 6, 7 jeweils als parallel oder hintereinander angeordnete zweistufige Stellvorrichtungen ausgebildet sind, wie in den Figuren 4a bis 4c dargestellt ist.It goes without saying that, in the case of the two-part glue scraper as well, the actuators 6, 7 are each designed as two-stage adjusting devices arranged in parallel or one behind the other, as shown in FIGS. 4a to 4c.

Claims (8)

  1. Glue scraper (2), which is adjustable on a glue roller (19) in a labelling machine and which is pivotably mounted with a support member (3) on a shaft (1), the support member (3) being spring-loaded in the direction of a stop member (13, 14), which is secured to the frame and is set to a minimum clearance between the glue scraper (2) and the glue roller (19), and an additional, adjustable stop member (8, 9, 28) being provided parallel to this stop member (13, 14) and being secured to the frame, the support member (3) being supportable on said additional stop member via the intermediary of an adjusting member (6, 7) having a constant adjustment path, characterised in that the adjusting member (6, 7) is an adjusting device, which operates in a multiple-stage manner, said adjusting device being a cylinder-and-piston unit which includes a plurality of operating cylinders and is provided with operating cylinders (26, 27), which are connected in series or in parallel with each other.
  2. Two-part glue scraper, which is adjustable on a glue roller (20) in a labelling machine, both parts of which scraper are pivotably mounted one above the other with a respective support member (3a, 3b) on a common shaft (1), each support member (3a, 3b) being spring-loaded in the direction of a stop member (13, 14), which is secured to the frame and is set to a minimum clearance from the glue scraper, and an adjustable stop member (8, 9) being provided parallel to this stop member (13, 14) and being secured to the frame, each support member (3a, 3b) being supportable on said adjustable stop member via the intermediary of an adjusting member (6, 7) having a constant adjustment path, characterised in that the two support members (3a, 3b) are interconnected via the intermediary of such a unilaterally operating entrainment device (21 - 22a) that, upon actuation of an adjusting member (6, 7), the support member (3a, 3b) associated with this adjusting member (6, 7) entrains the other support member, or the two support members (3a, 3b) are interconnected via the intermediary of a bilaterally operating entrainment device (24, 25) having such a limited no-load stroke that the entrainment device (24, 25) only responds in a portion of the adjustment range of the adjusting members (6, 7), and the adjusting member (6 or 7) for at least one component part (3a or 3b) of the glue scraper is an adjusting device, which operates in a multiple-stage manner, said adjusting device having a plurality of operating cylinders.
  3. Glue scraper according to claims 1 and 2, characterised in that one operating cylinder (27) of the operating cylinders (26, 27) acts with its piston rod (27''') on the piston (26'') of another operating cylinder (26), which has a greater stroke than the first operating cylinder (27).
  4. Glue scraper according to one of claims 2 or 3, characterised in that the adjusting device includes operating cylinders (26, 27), which are disposed parallel to each other.
  5. Glue scraper according to claims 1 or 4, characterised in that the operating cylinders (26, 27), which are disposed parallel to each other, have strokes of different sizes.
  6. Glue scraper according to one of claims 2 to 5, characterised in that the entrainment device (21 - 22a) comprises a driver (21), which is retained on the support member (3a), and an abutment (22), which is retained by the other support member (3b).
  7. Glue scraper according to one of claims 2 to 5, characterised in that the entrainment device (21 - 22a) has an adjustable no-load stroke.
  8. Glue scraper according to the preceding claims, characterised in that the spring loading of each support member (3a, 3b) for each part of the glue scraper is produced by a spring-like pressure-piece (17, 18), which acts on a wedge surface.
EP91109484A 1990-06-18 1991-06-08 Adjustable glue scraper for glue roller in a labelling machine Expired - Lifetime EP0463449B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4019409 1990-06-18
DE19904019409 DE4019409A1 (en) 1990-06-18 1990-06-18 Divided glue scraper on labelling machines - has entrainment member coupling two supports of two scraper parts
DE4102022A DE4102022C2 (en) 1990-06-18 1991-01-24 Divided glue scraper that can be pivoted onto a glue roller in a labeling machine for containers, in particular bottles
DE4102022 1991-01-24

Publications (2)

Publication Number Publication Date
EP0463449A1 EP0463449A1 (en) 1992-01-02
EP0463449B1 true EP0463449B1 (en) 1993-11-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91109484A Expired - Lifetime EP0463449B1 (en) 1990-06-18 1991-06-08 Adjustable glue scraper for glue roller in a labelling machine

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US (1) US5167755A (en)
EP (1) EP0463449B1 (en)
BR (1) BR9102631A (en)
CA (1) CA2044894A1 (en)
DE (2) DE4102022C2 (en)
ES (1) ES2046826T3 (en)

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US7704347B2 (en) 2005-05-27 2010-04-27 Prairie Packaging, Inc. Reinforced plastic foam cup, method of and apparatus for manufacturing same
US8828170B2 (en) 2010-03-04 2014-09-09 Pactiv LLC Apparatus and method for manufacturing reinforced containers
DE102011002590A1 (en) * 2011-01-12 2012-07-12 Krones Aktiengesellschaft Gluing unit with removable glue tank and attachable cleaning unit
DE102013111625A1 (en) 2013-10-22 2015-04-23 Khs Gmbh Glue scraper, gluing device with the glue scraper and labeling unit with gluing device
EP2982608B1 (en) * 2014-08-07 2017-01-04 Sidel S.p.a. Con Socio Unico Application unit and method for applying adhesive onto labels to be applied onto respective articles
KR102454775B1 (en) 2015-02-18 2022-10-17 가부시키가이샤 에바라 세이사꾸쇼 Substrate cleaning apparatus, substrate cleaning method and substrate processing apparatus
DE202015106407U1 (en) * 2015-11-25 2017-03-01 Krones Ag gluing unit
JP6822295B2 (en) * 2017-04-19 2021-01-27 シブヤマシナリー株式会社 Labela
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DE102020130531A1 (en) * 2020-11-19 2022-05-19 Krones Ag Device and method for gluing labels for containers and labeling machines

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Also Published As

Publication number Publication date
DE4102022C2 (en) 1995-01-12
DE59100631D1 (en) 1994-01-05
EP0463449A1 (en) 1992-01-02
US5167755A (en) 1992-12-01
DE4102022A1 (en) 1992-07-30
CA2044894A1 (en) 1991-12-19
BR9102631A (en) 1992-01-21
ES2046826T3 (en) 1994-02-01

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