EP1003676A1 - Labelling station for objects, in particular bottles, in a labelling machine with low-noise and low-wear double cam drive - Google Patents

Labelling station for objects, in particular bottles, in a labelling machine with low-noise and low-wear double cam drive

Info

Publication number
EP1003676A1
EP1003676A1 EP98945187A EP98945187A EP1003676A1 EP 1003676 A1 EP1003676 A1 EP 1003676A1 EP 98945187 A EP98945187 A EP 98945187A EP 98945187 A EP98945187 A EP 98945187A EP 1003676 A1 EP1003676 A1 EP 1003676A1
Authority
EP
European Patent Office
Prior art keywords
stations
engagement
station according
labeling station
engagement members
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98945187A
Other languages
German (de)
French (fr)
Other versions
EP1003676B1 (en
Inventor
Urs Ryser
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.)
Fribosa AG Werkzeug- und Maschinenbau
Original Assignee
Fribosa AG Werkzeug- und Maschinenbau
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 DE1997135086 external-priority patent/DE19735086C2/en
Priority claimed from DE29716294U external-priority patent/DE29716294U1/en
Application filed by Fribosa AG Werkzeug- und Maschinenbau filed Critical Fribosa AG Werkzeug- und Maschinenbau
Priority to DE29824704U priority Critical patent/DE29824704U1/en
Publication of EP1003676A1 publication Critical patent/EP1003676A1/en
Application granted granted Critical
Publication of EP1003676B1 publication Critical patent/EP1003676B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65CLABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00Details of labelling machines or apparatus
    • B65C9/08Label feeding
    • B65C9/12Removing separate labels from stacks
    • B65C9/16Removing separate labels from stacks by wetting devices
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702For plural parts or plural areas of single part
    • Y10T156/1744Means bringing discrete articles into assembled relationship
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702For plural parts or plural areas of single part
    • Y10T156/1744Means bringing discrete articles into assembled relationship
    • Y10T156/1768Means simultaneously conveying plural articles from a single source and serially presenting them to an assembly station
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702For plural parts or plural areas of single part
    • Y10T156/1744Means bringing discrete articles into assembled relationship
    • Y10T156/1768Means simultaneously conveying plural articles from a single source and serially presenting them to an assembly station
    • Y10T156/1771Turret or rotary drum-type conveyor
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702For plural parts or plural areas of single part
    • Y10T156/1744Means bringing discrete articles into assembled relationship
    • Y10T156/1776Means separating articles from bulk source

Definitions

  • the invention relates to a labeling station for objects, in particular bottles, with a plurality of stations arranged one behind the other along a path, namely a glue roller, a label box and a label transfer cylinder, and with at least one rotatably mounted on a rotating carrier and with each rotation of the carrier Removal element for the labels moved past the stations, which each has an outwardly curved receiving surface for the label that rolls on the front label of the label supply station and at the other stations, with a cam mechanism being provided as the drive for each removal element, which consists of a for all removal elements common, fixed double cam disc with one-sided curves arranged in two planes one above the other and at a distance from one another and consisting of two sets of engagement members with effective lever arms of different lengths, which by means of a s support element are mounted on a drive shaft of the removal element and, by positive locking with the two curves, when the support rotates, ensure that each removal element rotates positively over its full rotation, the drive shaft ending in front of the plane in which the first
  • Labeling stations of this type are known and have proven themselves in practice. High throughput rates can be achieved with them because the removal elements only perform rotary movements and no oscillating movements and therefore the positive and negative accelerations required to roll the removal elements with their curved receiving surfaces at the various stations can be kept relatively small.
  • the rotational movement of the removal elements is derived from external curves with which engaging members are engaged and transmitted to the removal elements by means of a transmission gear.
  • the engagement members can both be arranged symmetrically and have lever arms of equal length (DE 38 11 869 AI) or be arranged asymmetrically and have lever arms of different lengths (DE 39 08 378 AI). In the latter case, the engagement members of different lengths and offset in rotation enable improved positive guidance at critical points. In any case, such drives, which require transmission gears, are complex and, because of the large number of components involved in the rotary movement, imprecise and not exactly low-noise and low-wear.
  • the curves of the double cam disc of the cam mechanism of each removal element are internally toothed in the manner of a rack gear.
  • this cam mechanism four cam members are assigned to each cam, which are arranged on a common carrier, which is non-rotatably seated on the drive shaft of the removal element and which is located below the engagement members on the underside extends.
  • the advantage of such a cam mechanism is that a transmission gear is no longer required.
  • the number of engagement members is, however, significantly higher than the number of engagement members of the other known labeling station, because otherwise a secure engagement over a rotation angle of 360 ° of the removal element cannot be guaranteed with the relatively low teeth.
  • the invention has for its object to provide a labeling station of the type mentioned, in which the drive of the removal elements is as little wear and noise as possible with little design effort.
  • the double cam is designed in the manner of an internal gear rack at least in the area of the stations in such a way that the rotary movement of the removal elements is derived directly from it (without transmission gear) and only one engagement member each except for short transition areas from the engagement members Set with the double curve is engaged, and that only one of the engagement members has a longer effective lever arm than the other engagement members and this engagement member in the initial phase of the rolling movement of the Recording area at the stations is also in torque-effective driving engagement with the double cam.
  • a secure engagement is ensured over the full rotation range of 360 ° of the removal elements with a minimum of engaging members because, because of the bridge member, the teeth of the pinion teeth can protrude into the area of the imaginary extension of the drive shaft.
  • two active engagement members are sufficient - apart from short transition areas. This also applies in the particularly critical areas in which the rolling movement requires a high torque, such as in the initial phases of the rolling movement at the various stations. This high load is taken into account here by a longer lever arm of the torque-effective engagement member. Overall, you can get by with minimal design effort. The elimination of the transmission gear and the minimal engagement of the engagement members lead to less noise and less wear. In order to reduce the acceleration movements, it is even possible to design the module in such a way that it causes a slight backward rotation at the end of the movement between the stations.
  • the tine toothing can be designed with play on the tooth bases at least in some areas.
  • the module of the pinion toothing of the double cam disc between the stations is so large that the removal element after leaving a station is only rotated to the required rotational position at the beginning of the rolling movement at the next station.
  • the module is preferably set up between individual stations for the rotary movement to a standstill. This can be achieved if, when leaving a station, the rotary movement is continued with only a slightly reduced rotational angular velocity up to an angle at which the rotary movement is resumed at the next station. In this way it can even come to a standstill, in which no further noise is emitted by the drive.
  • the module for the pinion toothing in the areas between the stations can be selected in different sizes.
  • the module between label transfer cylinder and glue roller can be chosen as large as possible, in the limit case, as described, even until the rotary movements come to a standstill , while it is very small in the area of the glue roller and label box, so that these two stations can be arranged at an angle of around 90 °.
  • the mutual rotation angle offset of the engagement members is at least for a few ⁇ 90 °.
  • the mutual rotation angle offset of the engagement members is at least for a few ⁇ 90 °.
  • Particularly effective in terms of noise and wear reduction is an embodiment of the invention, which consists in that the internally toothed double curve in the area of the carrier in a first section both behind the label box and behind the gripper cylinder a much larger module than in the area between the glue roller and has the label box and that the respective engagement member with the longer effective lever arm is torque-effective engagement with a tooth flank of the associated curve at the beginning of the respective curve section with the larger module, which has an angle of inclination of at most 70 ° to the radius of the carrier through the axis of rotation of the removal element in the area of the tooth tip.
  • the angle of inclination should not exceed 50 °.
  • the ideal angle of inclination is approx. 60 °. This results in particularly favorable thread ratios for the engagement member with the larger lever arm.
  • the inlet conditions can be further improved in that the respective removal element is accelerated immediately after leaving the label box until the engagement member with the larger lever arm comes into engagement with the associated curve.
  • the tooth tips of the double curves at all stations lie to the side of the radius of the wearer running through the center of the stations.
  • the invention can be advantageously implemented with a central lubrication for the bearings of the drive shaft and the engagement members.
  • the drive shaft of each removal element has a bearing arranged above the carrier element for the engagement members, via which a lubricant supply is arranged stationary on the carrier.
  • the bearing is lubricated when it passes the stationary lubricant supply.
  • the lubricant runs from the bearing onto the engaging members due to gravity.
  • the lubricant distribution is particularly effective when the carrier element carries, on its side facing the bearing, a distributor plate for the lubricant to be dripped from the bearing and to be passed onto the engagement members projecting beyond the edge of the distributor plate.
  • FIG. 2 shows the labeling station according to FIG. 1 in a schematic representation with a double cam disc and a removal element which is in engagement with the double curve in the area between the label transfer cylinder and the glue roller
  • 3 shows the labeling station according to FIGS. 1 and 2 with a removal element effective on a glue roller in a schematic illustration
  • FIGS. 1 and 2 shows the labeling station according to FIGS. 1 and 2 with a removal element which is effective on a label box, in a schematic illustration and in detail,
  • FIGS. 1 and 2 shows a drive shaft of a removal element of a labeling station according to FIGS. 1 and 2 with storage and a bridge member with two sets of engagement members in axial section
  • FIG. 6 shows the bridge member according to FIG. 5 in section along the line A-A of FIG. 4,
  • FIG. 8 shows the labeling station according to FIG. 1 in a schematic representation with a double cam disc and a removal element which is in engagement with the double curve at different points in a different embodiment from FIG. 2
  • FIG. 9 the labeling station according to Figures 1 and 8 in a schematic representation with a double cam and various stations.
  • the labeling station shown in the drawing consists of a carrier 1 on which the same Angles three removal elements 2,3,4 are arranged.
  • Each removal element 2, 3, 4 has a cylindrically curved receiving surface 5, 6, 7 for a label.
  • Each removal element 2, 3, 4 is rotatably mounted in the carrier 1 between this curved receiving surface 5, 6, 7 and its center of curvature with a drive shaft 8, 9, 10.
  • the carrier 1 rotates in the direction of the arrow 11
  • the removal elements 2, 3, 4 inevitably rotate in the direction of the arrows 12, 13, 14 by cam drives, that is to say in the opposite direction to the carrier 1.
  • the removal elements 2, 3, 4 are at different stations, specifically on a glue roller 16 rotating in the direction of the arrow 15, a fixed label box 17 with a stack of labels therein and a label transfer cylinder (gripper cylinder rotating in the direction of the arrow 18) ) 19 is moved past the individual stations with a rolling motion of the receiving surfaces 5, 6, 7.
  • the receiving surface 5, 6, 7 of each removal element 2, 3, 4 is glued by the glue roller 16.
  • the front label is removed from the stack of labels due to the adhesive action of the glue on the receiving surface 5, 6, 7 and, when the carrier 1 is rotated further, is fed to the label transfer cylinder 19, which transfers it from the receiving surface 5 , 6.7 decreases.
  • the cam drives mentioned consist of a Common stationary double cam 20 with one-sided curves 20a, 20b arranged in two planes one above the other and at a distance from one another, in the manner of a rack gear toothing, the module of which is not constant, and sets of two engagement members each associated with the individual removal elements 2, 3, 4 Curves 20a, 20b are in engagement, as shown in FIGS. 2, 3, 4.
  • a carrier element 21 is fastened to the lower end of the drive shaft 6, 7, 8 of each removal element 2, 3, 4, in particular formed integrally with the shaft, which has two molded pins 22, 23 on the underside with a set of rollers 24, 25 arranged thereon Engaging members.
  • a bridge member 26 is fastened to the pins 22, 23, which in turn carries pins 27, 28 offset at an angle of approximately 90 ° to the pins 22, 23 for a further set of rollers 29, 30 as engagement members.
  • the carrier element 21 is designed as a distributor plate.
  • the rollers 24, 25, 29, 30 protrude beyond its periphery.
  • the drive shaft 7 is provided in a double bearing 31, a stationary lubricant supply 32 arranged in the machine frame.
  • the bearings 31 and the rollers 24, 25, 29, 30 which pass this lubricant supply each time the removal elements rotate, receive from this lubricant supply 32 lubricant which is distributed over the two bearings of the bearing 31, then onto the distribution plate 21 and from here onto the rollers 24, 25; 29, 30 and thus also reaches curves 20a, 20b.
  • the engaging members 24, 25, 29, 30 are not all arranged with an angular offset of 90 °, but rather more, sometimes less.
  • the effective lever arm of the engagement member 25 is larger than the effective lever arm of the other engagement members 24, 29, 30.
  • the curves 20a, 20b which are designed as drive rack teeth, are designed with play on the tooth bases, as is indicated in FIG. 2 at two points 20a *, 20b *.
  • This training serves to further reduce noise and wear, because it is prevented that the third engaging member remains in engagement on the tooth bases and leads to an over determination.
  • the areas with play on the tooth bases are primarily intended where the toothing module is small. This depends on the radius of curvature of the station, that is, on the glue roller 16 it is smaller than on the flat front of the label box 17.
  • the module can be particularly large in the areas between the stations, where it can even come to a standstill, such as in Figure 3 is provided for the area shown below left.
  • the geometry of the cam drive is designed in such a way that, apart from a few short transition areas, only one engagement member of each of the two blocks is in engagement with the curves 20a, 20b.
  • the tooth flanks are designed by material retraction so that there is a smooth in and out for each engagement element on each flank Spout results.
  • FIGS. 8 and 9 differs from that of FIG. 2 in that the shape of the curves 20a, 20b is somewhat different. However, it is in agreement with the curve according to FIG. 2 that the tooth tips of the two curves 20a, 20b lie laterally next to the radii R1, R2, R3, which go through the centers of the individual stations 16, 17, 18. Furthermore, they agree that the module of the curves 20a, 20b in the direction of rotation of the carrier 20 is substantially larger in the first section behind the label box 17 and in the first section behind the gripper cylinder 19 than in the area between the glue roller 16 and the label box 17th

Landscapes

  • Labeling Devices (AREA)

Abstract

The invention relates to a labelling station for articles, more particularly bottles, having removal elements (2) which are rotatably mounted on a rotating support (1) and are moved past fixed stations (15, 16, 19) disposed at the periphery of the support with each rotation thereof and which roll with their receiving surface (5) with synchronisation at the stations and are glued, a label being delivered to a label-transferring station. The drive used for the removal elements (2) is a cam drive with two sets of engagement members (24, 25; 29, 30) which engage with a double cam (20a, 20b). The drive is so designed that, apart from short transitional zones, of the engagement members only two engagement members engage, one engagement member having a longer operative lever arm than all the remaining engagement members, and said engagement member 25 being also in torque-operative driving engagement with the double cam 20a, 20b in the initial phase of the rolling movement of the receiving surface at the stations.

Description

EΗKETTIERSTAΗON FÜR GEGENSTÄNDE, INSBESONDERE FLASCHEN, IN EINER ETIKETTIERMAS- CHINE MIT GERÄUSCH- UND VERSCHLEISSARMEM DOPPELKURVENANTRIEBEKETTING STAΗON FOR ITEMS, IN PARTICULAR BOTTLES, IN A LABELING MACHINE WITH LOW-NOISE AND WEAR-LOW DOUBLE-CURVE DRIVE
Die Erfindung bezieht sich auf eine Etikettierstation für Gegenstände, insbesondere Flaschen, mit mehreren längs einer Bahn hintereinander angeordneten Stationen, und zwar einer Leimwalze, einem Etikettenkasten und einem Etikettenübertragungszylinder, sowie mit mindestens einem auf einem sich drehenden Träger drehbar gelagerten und bei jeder Umdrehung des Trägers an den Stationen vorbeibewegten Entnahmeelement für die Etiketten, das jeweils eine nach außen gewölbte, sich auf dem jeweils vorderen Etikett der Etikettenvorratsstation und an den anderen Stationen abwälzende Aufnahmefläche für das Etikett aufweist, wobei als Antrieb für jedes Entnahmeelement ein Kurvengetriebe vorgesehen ist, das aus einer für alle Entnahmeelemente gemeinsamen, ortsfesten Doppelkurvenscheibe mit in zwei Ebenen übereinander und mit Abstand voneinander angeordneten einseitigen Kurven und aus zwei Sätzen von Eingriffsgliedern mit verschieden langen wirksamen Hebelarmen besteht, die mittels eines Trägerelements auf einer Antriebswelle des Entnahmeelements gelagert sind und durch Formschluß mit den beiden Kurven bei Drehung des Trägers den Zwangslauf eines jeden Entnahmeelements über seine volle Umdrehung sichern, wobei die Antriebswelle vor der Ebene, in der die dieser Welle näherliegende erste Kurve liegt, endet, und wobei die Eingriffsglieder, die der anderen zweiten Kurve zugeordnet sind, an einem zwischen den beiden Kurven liegenden Brückenglied drehversetzt gelagert sind, das von den Eingriffsgliedern der ersten Kurve getragen ist. Etikettierstationen dieser Art sind bekannt und haben sich in der Praxis bewährt. Mit ihnen lassen sich hohe Durchsatzleistungen erzielen, weil die Entnahmeelemente nur Drehbewegungen und keine oszillierenden Bewegungen durchführen und deshalb die positiven und negativen Beschleunigungen, die erforderlich sind, um die Entnahmeelemente mit ihren gekrümmten Auf ahmeflächen an den verschiedenen Stationen abzuwälzen, verhältnismäßig klein gehalten werden können. Bei den bekannten Etikettierstationen wird die Drehbewegung der Entnahmeelemente aus Außenkurven, mit denen Eingriffsglieder im Eingriff stehen, abgeleitet und mittels eines Übersetzungsgetriebes an die Entnahmeelemente übertragen. Die Eingriffsglieder können sowohl symmetrisch angeordnet sein und gleich lange wirksame Hebelarme aufweisen (DE 38 11 869 AI) oder unsymmetrisch angeordnet sein und unterschiedlich lange Hebelarme aufweisen (DE 39 08 378 AI) . Im letzteren Fall ermöglichen die unterschiedlich langen und drehversetzten Eingriffsglieder eine verbesserte Zwangsführung an kritischen Stellen. In jedem Fall sind solche Antriebe, die Übersetzungsgetriebe erfordern, aufwendig und wegen der Vielzahl der an der Drehbewegung beteiligten Bauelemente unpräzise und nicht gerade geräusch- und verschleißarm.The invention relates to a labeling station for objects, in particular bottles, with a plurality of stations arranged one behind the other along a path, namely a glue roller, a label box and a label transfer cylinder, and with at least one rotatably mounted on a rotating carrier and with each rotation of the carrier Removal element for the labels moved past the stations, which each has an outwardly curved receiving surface for the label that rolls on the front label of the label supply station and at the other stations, with a cam mechanism being provided as the drive for each removal element, which consists of a for all removal elements common, fixed double cam disc with one-sided curves arranged in two planes one above the other and at a distance from one another and consisting of two sets of engagement members with effective lever arms of different lengths, which by means of a s support element are mounted on a drive shaft of the removal element and, by positive locking with the two curves, when the support rotates, ensure that each removal element rotates positively over its full rotation, the drive shaft ending in front of the plane in which the first curve closest to this shaft lies, and wherein the engagement members, which are assigned to the other second curve, are mounted in a rotationally offset manner on a bridge member lying between the two curves, which is carried by the engagement members of the first curve. Labeling stations of this type are known and have proven themselves in practice. High throughput rates can be achieved with them because the removal elements only perform rotary movements and no oscillating movements and therefore the positive and negative accelerations required to roll the removal elements with their curved receiving surfaces at the various stations can be kept relatively small. In the known labeling stations, the rotational movement of the removal elements is derived from external curves with which engaging members are engaged and transmitted to the removal elements by means of a transmission gear. The engagement members can both be arranged symmetrically and have lever arms of equal length (DE 38 11 869 AI) or be arranged asymmetrically and have lever arms of different lengths (DE 39 08 378 AI). In the latter case, the engagement members of different lengths and offset in rotation enable improved positive guidance at critical points. In any case, such drives, which require transmission gears, are complex and, because of the large number of components involved in the rotary movement, imprecise and not exactly low-noise and low-wear.
Bei einer anderen bekannten Etikettierstation (DE 29 01 853 C2) sind die Kurven der Doppelkurvenscheibe des Kurvengetriebes eines jeden Entnahmeelementes nach Art einer Triebstockverzahnung innenverzahnt. Bei diesem Kurvengetriebe sind jeder Kurvenscheibe vier Eingriffsglieder zugeordnet, die auf einem gemeinsamen Träger angeordnet sind, der auf der Antriebswelle des Entnahmeelementes drehfest sitzt, die sich bis zu einer Lagerung unterhalb der unterseitigen Eingriffsglieder erstreckt. Der Vorteil eines solchen Kurvengetriebes besteht darin, daß nicht länger ein Übersetzungsgetriebe erforderlich ist. Die Anzahl der Eingriffsglieder ist allerdings gegenüber der Anzahl der Eingriffsglieder der anderen bekannten Etikettierstation wesentlich höher, weil anders ein sicherer Eingriff über einen Drehwinkel von 360° des Entnahmeelementes bei den verhältnismäßig niedrigen Zähnen nicht zu gewährleisten ist. Deshalb sind auch mit den beiden Kurven in jeder Phase der Drehbewegung mindestens drei Eingriffsglieder, und zwar zwei benachbarte Eingriffsglieder des einen Satzes und ein Eingriffsglied des anderen Satzes, und in der Phase der Übergabe der hauptsächlichen Führung von zwei Eingriffsgliedern des einen Satzes an zwei Eingriffsgliedern des anderen Satzes sogar vier Eingriffsglieder in Eingriff.In another known labeling station (DE 29 01 853 C2), the curves of the double cam disc of the cam mechanism of each removal element are internally toothed in the manner of a rack gear. In this cam mechanism, four cam members are assigned to each cam, which are arranged on a common carrier, which is non-rotatably seated on the drive shaft of the removal element and which is located below the engagement members on the underside extends. The advantage of such a cam mechanism is that a transmission gear is no longer required. The number of engagement members is, however, significantly higher than the number of engagement members of the other known labeling station, because otherwise a secure engagement over a rotation angle of 360 ° of the removal element cannot be guaranteed with the relatively low teeth. Therefore, with the two curves in each phase of the rotational movement, there are at least three engagement members, namely two adjacent engagement members of one set and one engagement member of the other set, and in the phase of transferring the main guidance of two engagement members of the one set to two engagement members of the another set even engages four engagement members.
Der Erfindung liegt die Aufgabe zugrunde, eine Etikettierstation der eingangs genannten Art zu schaffen, bei der der Antrieb der Entnahmeelemente bei geringem konstruktiven Aufwand möglichst verschleiß- und geräuscharm ist.The invention has for its object to provide a labeling station of the type mentioned, in which the drive of the removal elements is as little wear and noise as possible with little design effort.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Doppelkurvenscheibe nach Art einer innenverzahnten Triebstockverzahnung zumindest im Bereich der Stationen derart ausgebildet ist, daß davon unmittelbar (ohne Übersetzungsgetriebe) die Drehbewegung der Entnahmeelemente abgeleitet wird und dabei bis auf kurze Übergangsbereiche von den Eingriffsgliedern nur ein Eingriffsglied je Satz mit der Doppelkurve sich im Eingriff befindet, und daß von den Eingriffsgliedern nur ein Eingriffsglied einen längeren wirksamen Hebelarm als die anderen Eingriffsglieder hat und dieses Eingriffsglied in der Anfangsphase der Abwälzbewegung der Aufnahmeflache an den Stationen sich zusätzlich im drehmomentwirksamen treibenden Eingriff mit der Doppelkurvenscheibe befindet.This object is achieved in that the double cam is designed in the manner of an internal gear rack at least in the area of the stations in such a way that the rotary movement of the removal elements is derived directly from it (without transmission gear) and only one engagement member each except for short transition areas from the engagement members Set with the double curve is engaged, and that only one of the engagement members has a longer effective lever arm than the other engagement members and this engagement member in the initial phase of the rolling movement of the Recording area at the stations is also in torque-effective driving engagement with the double cam.
Bei der erfmdungsgemaßen Etikettierstation ist über den vollen Drehwmkelbereich von 360° der Entnahmeelemente mit einem Minimum an Eingriffsgliedern ein sicherer Eingriff gewährleistet, weil wegen des Bruckengliedes die Zahne der Triebstockverzahnung bis in den Bereich der gedachten Verlängerung der Antriebswelle ragen können. Für diesen sicheren Eingriff der Eingriffsglieder und damit auch für die Einleitung eines Drehmomentes reichen - bis auf kurze Ubergangsbereiche - zwei aktive Eingriffsglieder aus. Das gilt auch in den besonders kritischen Bereichen, in denen die Abwalzbewegung ein hohes Drehmoment verlangt, wie in den Anfangsphasen der Abwalzbewegung an den verschiedenen Stationen. Hier wird dieser hohen Beanspruchung durch einen längeren Hebelarm des drehmomentwirksamen Eingriffsgliedes Rechnung getragen. Insgesamt kommt man also mit einem minimalen konstruktiven Aufwand aus. Der Fortfall des Übersetzungsgetriebes und der auf ein Minimum reduzierte Eingriff der Eingriffsglieder fuhren zu einer geringeren Gerauschentwicklung und zu einem geringerem Verschleiß. Es ist sogar möglich, zur Herabsetzung der Beschleunigungsbewegungen den Modul so zu gestalten, daß er am Ende der Bewegung zwischen den Stationen eine leichte Ruckdrehung bewirkt.In the labeling station according to the invention, a secure engagement is ensured over the full rotation range of 360 ° of the removal elements with a minimum of engaging members because, because of the bridge member, the teeth of the pinion teeth can protrude into the area of the imaginary extension of the drive shaft. For this safe engagement of the engagement members and thus also for the introduction of a torque, two active engagement members are sufficient - apart from short transition areas. This also applies in the particularly critical areas in which the rolling movement requires a high torque, such as in the initial phases of the rolling movement at the various stations. This high load is taken into account here by a longer lever arm of the torque-effective engagement member. Overall, you can get by with minimal design effort. The elimination of the transmission gear and the minimal engagement of the engagement members lead to less noise and less wear. In order to reduce the acceleration movements, it is even possible to design the module in such a way that it causes a slight backward rotation at the end of the movement between the stations.
Zur weiteren Gerauschminderung bei immer noch sicherer Fuhrung kann die Tπebstockververzahnung mindestens in einigen Bereichen mit Spiel an den Zahnfußen ausgebildet sein. Nach einer weiteren Ausgestaltung der Erfindung ist der Modul der Triebstockverzahnung der Doppelkurvenscheibe zwischen den Stationen so groß, daß das Entnahmeelement nach Verlassen einer Station nur bis in die erforderliche Drehstellung am Anfang der Abwalzbewegung an der nächsten Station gedreht wird. Vorzugsweise ist der Modul zwischen einzelnen Stationen für die Drehbewegung bis zum Stillstand eingerichtet. Dies laßt sich erreichen, wenn bei Verlassen einer Station die Drehbewegung bei nur gering verminderter Drehwinkelgeschwindigkeit bis zu einem Winkel fortgeführt wird, mit dem die Drehbewegung an der nächsten Station wieder aufgenommen wird. Auf diesem Weg kann es dann sogar zu einem Stillstand kommen, bei dem von dem Antrieb keine weitere Gerauschbildung ausgeht .In order to further reduce noise while still guiding, the tine toothing can be designed with play on the tooth bases at least in some areas. According to a further embodiment of the invention, the module of the pinion toothing of the double cam disc between the stations is so large that the removal element after leaving a station is only rotated to the required rotational position at the beginning of the rolling movement at the next station. The module is preferably set up between individual stations for the rotary movement to a standstill. This can be achieved if, when leaving a station, the rotary movement is continued with only a slightly reduced rotational angular velocity up to an angle at which the rotary movement is resumed at the next station. In this way it can even come to a standstill, in which no further noise is emitted by the drive.
Das Modul der Triebstockverzahnung in den Bereichen zwischen den Stationen kann verschieden groß gewählt werden. Um einerseits einen Gegenstandstransport längs des Etikettenubertragungszylinders zu ermöglichen, andererseits aber die dem häufigen Zugriff der Bedienungsperson freizuhaltenden Stationen möglichst gut zuganglich zu gestalten, kann der Modul zwischen Etikettenubertragungszylinder und Leimwalze möglichst groß gewählt werden, im Grenzfall, wie geschildert, sogar bis zum Stillstand der Drehbewegungen, wahrend er im Bereich von Leimwalze und Etikettenkasten sehr klein ist, so daß diese beiden Stationen unter einem Winkel von rund 90° angeordnet sein können.The module for the pinion toothing in the areas between the stations can be selected in different sizes. In order on the one hand to enable an object to be transported along the label transfer cylinder, but on the other hand to make the stations that are free from frequent access by the operator as accessible as possible, the module between label transfer cylinder and glue roller can be chosen as large as possible, in the limit case, as described, even until the rotary movements come to a standstill , while it is very small in the area of the glue roller and label box, so that these two stations can be arranged at an angle of around 90 °.
Für eine optimale Auslegung der Triebstockverzahnung kann es von Vorteil sein, wenn der gegenseitige Drehwinkelversatz der Eingriffsglieder mindestens für einige ≠ 90° ist. Für eine Verminderung des Verschleißes und der Gerauschbildung ist auch von Vorteil, wenn die Eingriffsglieder durch Zurücknahme der tragenden Zahnflanken sanft auf die tragenden Zahnflanken auflaufen und von ihnen ablaufen.For an optimal design of the rack gear teeth, it can be advantageous if the mutual rotation angle offset of the engagement members is at least for a few ≠ 90 °. For a reduction in wear and noise is also advantageous if the By withdrawing the load-bearing tooth flanks, engagement elements gently run onto and run off the load-bearing tooth flanks.
Besonders wirksam hinsichtlich der Geräusch- und Verschleißminderung ist eine Ausgestaltung der Erfindung, die darin besteht, daß die innenverzahnte Doppelkurve im Bereich des Tragers in einem ersten Abschnitt sowohl hinter dem Etikettenkasten als auch hinter dem Greiferzylinder einen wesentlich größeren Modul als im Bereich zwischen der Leimwalze und dem Etikettenkasten hat und daß das jeweilige Eingriffsglied mit dem längeren wirksamen Hebelarm sich m drehmomentwirksamem Eingriff mit einer Zahnflanke der zugeordneten Kurve am Anfang des jeweiligen Kurvenabschnittes mit dem größeren Modul befindet, die zum Radius des Tragers durch die Drehachse des Entnahmeelementes einen Neigungswinkel von höchstens 70° im Bereich der Zahnspitze hat. Der Neigungswinkel sollte höchstens 50° betragen. Optimal ist ein Neigungswinkel von ca. 60°. Dadurch erreicht man besonders gunstige Emfadelverhaltnisse für das Eingriffsglied mit dem größeren Hebelarm.Particularly effective in terms of noise and wear reduction is an embodiment of the invention, which consists in that the internally toothed double curve in the area of the carrier in a first section both behind the label box and behind the gripper cylinder a much larger module than in the area between the glue roller and has the label box and that the respective engagement member with the longer effective lever arm is torque-effective engagement with a tooth flank of the associated curve at the beginning of the respective curve section with the larger module, which has an angle of inclination of at most 70 ° to the radius of the carrier through the axis of rotation of the removal element in the area of the tooth tip. The angle of inclination should not exceed 50 °. The ideal angle of inclination is approx. 60 °. This results in particularly favorable thread ratios for the engagement member with the larger lever arm.
Die EinlaufVerhältnisse können weiter dadurch verbessert werden, daß das jeweilige Entnahmeelement unmittelbar nach Verlassen des Etikettenkastens beschleunigt wird bis das Eingriffsglied mit dem größeren Hebelarm mit der zugeordneten Kurve in Eingriff gelangt.The inlet conditions can be further improved in that the respective removal element is accelerated immediately after leaving the label box until the engagement member with the larger lever arm comes into engagement with the associated curve.
Schließlich ist es für optimale Eingriffs- und Einlaufbedingungen der Eingriffsglieder von Vorteil, wenn die Zahnspitzen der Doppelkurven an allen Stationen seitlich der durch die Mitte der Stationen verlaufenden Radien des Tragers liegen. Die Erfindung läßt sich vorteilhaft verwirklichen mit einer zentralen Schmierung für die Lager der Antriebswelle und die Eingriffsglieder. In diesem Fall ist vorgesehen, daß die Antriebswelle eines jeden Entnahmeelementes eine über dem Trägerelement für die Eingriffsglieder angeordnete Lagerung aufweist, über der eine Schmiermittelzuführung stationär auf dem Träger angeordnet ist. Die Lagerung wird dann geschmiert, wenn sie die stationäre Schmiermittelzuführung passiert. Von der Lagerung läuft das Schmiermittel aufgrund von Schwerkraft auf die Eingriffsglieder. Die Schmiermittelverteilung ist dann besonders wirksam, wenn das Trägerelement an seiner der Lagerung zugekehrten Seite einen Verteilerteller für das von der Lagerung abtropfende und auf die den Rand des Verteilertellers überragenden Eingriffsglieder zu gebende Schmiermittel trägt .Finally, for optimal engagement and running-in conditions of the engagement members, it is advantageous if the tooth tips of the double curves at all stations lie to the side of the radius of the wearer running through the center of the stations. The invention can be advantageously implemented with a central lubrication for the bearings of the drive shaft and the engagement members. In this case, it is provided that the drive shaft of each removal element has a bearing arranged above the carrier element for the engagement members, via which a lubricant supply is arranged stationary on the carrier. The bearing is lubricated when it passes the stationary lubricant supply. The lubricant runs from the bearing onto the engaging members due to gravity. The lubricant distribution is particularly effective when the carrier element carries, on its side facing the bearing, a distributor plate for the lubricant to be dripped from the bearing and to be passed onto the engagement members projecting beyond the edge of the distributor plate.
Im folgenden wird die Erfindung anhand einer ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Im einzelnen zeigen:The invention is explained in more detail below with reference to a drawing which represents an exemplary embodiment. In detail show:
Fig. 1 eine Etikettierstation einer Etikettiermaschine für Gegenstände, insbesondere Flaschen, in schematischer Darstellung in Aufsicht,1 a labeling station of a labeling machine for objects, in particular bottles, in a schematic representation in supervision,
Fig. 2 die Etikettierstation gemäß Figur 1 in schematischer Darstellung mit einer Doppelkurvenscheibe und einem mit der Doppelkurve im Bereich zwischen Etikettenübertragungszylinder und Leimwalze in Eingriff stehendem Entnahmeelement, Fig. 3 die Etikettierstation gemäß Figur 1 und 2 mit einem an einer Leimwalze wirksamen Entnahmeelement in schematischer Darstellung,2 shows the labeling station according to FIG. 1 in a schematic representation with a double cam disc and a removal element which is in engagement with the double curve in the area between the label transfer cylinder and the glue roller, 3 shows the labeling station according to FIGS. 1 and 2 with a removal element effective on a glue roller in a schematic illustration,
Fig. 4 die Etikettierstation gemäß Figur 1 und 2 mit einem an einem Etikettenkasten wirksamen Entnahmeelement in schematischer Darstellung und im Ausschnitt,4 shows the labeling station according to FIGS. 1 and 2 with a removal element which is effective on a label box, in a schematic illustration and in detail,
Fig. 5 eine Antriebswelle eines Entnahmeelementes einer Etikettierstation nach Figur 1 und 2 mit Lagerung und einem Bruckenglied mit zwei Sätzen Eingriffsglieder im Axialschnitt,5 shows a drive shaft of a removal element of a labeling station according to FIGS. 1 and 2 with storage and a bridge member with two sets of engagement members in axial section,
Fig. 6 das Bruckenglied gemäß Figur 5 im Schnitt nach der Linie A-A der Figur 4,6 shows the bridge member according to FIG. 5 in section along the line A-A of FIG. 4,
Fig. 7 das Bruckenglied gemäß Figur 5 im Schnitt nach der Linie B-B der Figur 4,7 in section along the line B-B of FIG. 4,
Fig. 8 die Etikettierstation gemäß Figur 1 m schematischer Darstellung mit einer Doppelkurvenscheibe und einem in Eingriff mit der Doppelkurve an verschiedenen Stellen stehenden Entnahmeelement in einer zur Figur 2 anderen Ausfuhrung8 shows the labeling station according to FIG. 1 in a schematic representation with a double cam disc and a removal element which is in engagement with the double curve at different points in a different embodiment from FIG. 2
u n dand
Fig. 9 die Etikettierstation gemäß Figur 1 und 8 in schematischer Darstellung mit einer Doppelkurvenscheibe und verschiedenen Stationen.Fig. 9, the labeling station according to Figures 1 and 8 in a schematic representation with a double cam and various stations.
Die m der Zeichnung dargestellte Etikettierstation besteht aus einem Trager 1, auf dem unter gleichen Winkeln drei Entnahmeelemente 2,3,4 angeordnet sind. Jedes Entnahmeelement 2,3,4 weist eine zylindrisch gekrümmte Aufnahmefläche 5,6,7 für ein Etikett auf. Jedes Entnahmeelement 2,3,4 ist zwischen dieser gekrümmten Aufnahmefläche 5,6,7 und deren Krümmungsmittelpunkt mit einer Antriebswelle 8,9,10 im Träger 1 drehbar gelagert. Bei Drehung des Trägers 1 in Richtung des Pfeils 11 drehen sich zwangsläufig durch Kurvenantriebe die Entnahmeelemente 2,3,4 in Richtung der Pfeile 12,13,14, also gegensinnig zum Träger 1.The labeling station shown in the drawing consists of a carrier 1 on which the same Angles three removal elements 2,3,4 are arranged. Each removal element 2, 3, 4 has a cylindrically curved receiving surface 5, 6, 7 for a label. Each removal element 2, 3, 4 is rotatably mounted in the carrier 1 between this curved receiving surface 5, 6, 7 and its center of curvature with a drive shaft 8, 9, 10. When the carrier 1 rotates in the direction of the arrow 11, the removal elements 2, 3, 4 inevitably rotate in the direction of the arrows 12, 13, 14 by cam drives, that is to say in the opposite direction to the carrier 1.
Bei Drehung des Trägers 1 werden die Entnahmeelemente 2,3,4 an verschieden Stationen, und zwar an einer in Richtung des Pfeils 15 rotierenden Leimwalze 16, einem feststehenden Etikettenkasten 17 mit einem darin befindlichen Etikettenstapel und einem in Richtung des Pfeils 18 rotierenden Etikettenübertragungszylinder (Greiferzylinder) 19 unter Ausführung einer Abwälzbewegung der Aufnahmeflächen 5,6,7 an den einzelnen Stationen vorbeibewegt. Dabei wird zunächst die Aufnahmefläche 5,6,7 eines jeden Entnahmeelementes 2,3,4 durch die Leimwalze 16 beleimt. Beim Abwälzen an dem vorderen Etikett des im Etikettenkasten 17 bevorrateten Etikettenstapels wird das vordere Etikett infolge der Haftwirkung des Leims an der Aufnahmefläche 5,6,7 dem Etikettenstapel entnommen und bei weiterer Drehung des Trägers 1 dem Etikettenübertragungszylinder 19 zugeführt, der es von der Aufnahmefläche 5,6,7 abnimmt.When the carrier 1 rotates, the removal elements 2, 3, 4 are at different stations, specifically on a glue roller 16 rotating in the direction of the arrow 15, a fixed label box 17 with a stack of labels therein and a label transfer cylinder (gripper cylinder rotating in the direction of the arrow 18) ) 19 is moved past the individual stations with a rolling motion of the receiving surfaces 5, 6, 7. First, the receiving surface 5, 6, 7 of each removal element 2, 3, 4 is glued by the glue roller 16. When rolling on the front label of the stack of labels stored in the label box 17, the front label is removed from the stack of labels due to the adhesive action of the glue on the receiving surface 5, 6, 7 and, when the carrier 1 is rotated further, is fed to the label transfer cylinder 19, which transfers it from the receiving surface 5 , 6.7 decreases.
Damit an den verschiedenen gestalteten Stationen 16,17,19 die Aufnahmeflächen 5,6,7 sich abwälzen können, ist es erforderlich, daß die Rotationsbewegung eines jeden Entnahmeelementes 2,3,4 in Richtung des Pfeils 12,13,14 beschleunigt und verzögert wird. Für diesen Zweck sind die erwähnten Kurvenantriebe vorgesehen, die aus einer gemeinsamen stationären Doppelkurvenscheibe 20 mit in zwei Ebenen übereinander und mit Abstand voneinander angeordneten einseitigen Kurven 20a, 20b nach Art einer Triebstockverzahnung, deren Modul nicht konstant ist, und aus den einzelnen Entnahmeelementen 2,3,4 zugeordneten Sätzen von je zwei Eingriffsgliedern, die mit den Kurven 20a, 20b im Eingriff stehen, wie die Figuren 2,3,4 zeigen. Dazu ist am unteren Ende der Antriebswelle 6,7,8 eines jeden Entnahmeelementes 2,3,4 ein Trägerelement 21 befestigt, insbesondere einstückig mit der Welle ausgebildet, das unterseitig zwei angeformte Zapfen 22,23 mit einem darauf angeordneten Satz Rollen 24,25 als Eingriffsglieder trägt. An den Zapfen 22,23 ist ein Brückenglied 26 befestigt, das seinerseits um etwa 90° zu den Zapfen 22,23 winkelversetzte Zapfen 27,28 für eine weiteren Satz von Rollen 29,30 als Eingriffsglieder trägt. Das Trägerelement 21 ist, wie aus Figur 4 ersichtlich, als Verteilerteller gestaltet. Über seine Peripherie ragen die Rollen 24,25;29,30 hinaus. Oberhalb des Trägerelementes 21 ist die Antriebswelle 7 in einer zweifachen Lagerung 31, eine stationäre im Maschinengestell angeordnete Schmiermittelzuführung 32 vorgesehen. Die bei jedem Umlauf der Entnahmeelemente diese Schmiermittelzuführung passierende Lagerung 31 und die Rollen 24,25;29,30 erhalten von dieser Schmiermittelzuführung 32 Schmiermittel, das sich über die beiden Lager der Lagerung 31 verteilt, dann auf den Verteilteller 21 und von hier auf die Rollen 24,25;29,30 und damit auch an die Kurven 20a, 20b gelangt. Dem einstückig mit der Welle ausgebildeten Trägerelement 21 in seiner besonderen Ausführung mit den angeformten Zapfen 22,23, aber auch der speziellen Schmiermittelzuführung kommt auch selbständige erfinderische Bedeutung zu. Wie die Figuren 2 bis 4 sowie 6 und 7 zeigen, sind die Eingriffsglieder 24,25;29,30 nicht alle mit einem Winkelversatz von 90°, sondern teilweise mehr, teilweise weniger angeordnet. Darüber hinaus ist der wirksame Hebelarm des Eingriffsgliedes 25 großer als der wirksame Hebelarm der übrigen Eingriffsglieder 24,29,30.So that the receiving surfaces 5, 6, 7 can roll off at the various designed stations 16, 17, 19, it is necessary that the rotational movement of each removal element 2, 3, 4 is accelerated and decelerated in the direction of arrow 12, 13, 14 . For this purpose, the cam drives mentioned are provided, which consist of a Common stationary double cam 20 with one-sided curves 20a, 20b arranged in two planes one above the other and at a distance from one another, in the manner of a rack gear toothing, the module of which is not constant, and sets of two engagement members each associated with the individual removal elements 2, 3, 4 Curves 20a, 20b are in engagement, as shown in FIGS. 2, 3, 4. For this purpose, a carrier element 21 is fastened to the lower end of the drive shaft 6, 7, 8 of each removal element 2, 3, 4, in particular formed integrally with the shaft, which has two molded pins 22, 23 on the underside with a set of rollers 24, 25 arranged thereon Engaging members. A bridge member 26 is fastened to the pins 22, 23, which in turn carries pins 27, 28 offset at an angle of approximately 90 ° to the pins 22, 23 for a further set of rollers 29, 30 as engagement members. As can be seen in FIG. 4, the carrier element 21 is designed as a distributor plate. The rollers 24, 25, 29, 30 protrude beyond its periphery. Above the carrier element 21, the drive shaft 7 is provided in a double bearing 31, a stationary lubricant supply 32 arranged in the machine frame. The bearings 31 and the rollers 24, 25, 29, 30 which pass this lubricant supply each time the removal elements rotate, receive from this lubricant supply 32 lubricant which is distributed over the two bearings of the bearing 31, then onto the distribution plate 21 and from here onto the rollers 24, 25; 29, 30 and thus also reaches curves 20a, 20b. The support element 21, which is formed in one piece with the shaft, in its special design with the integrally formed pins 22, 23, but also the special lubricant supply also has independent inventive significance. As FIGS. 2 to 4 and 6 and 7 show, the engaging members 24, 25, 29, 30 are not all arranged with an angular offset of 90 °, but rather more, sometimes less. In addition, the effective lever arm of the engagement member 25 is larger than the effective lever arm of the other engagement members 24, 29, 30.
Aus den Figuren 3 und 4 ist zu entnehmen, daß die als Triebstockverzahnung ausgebildeten Kurven 20a, 20b mit Spiel an den Zahnfußen ausgebildet sind, wie es in Figur 2 an zwei Stellen 20a*, 20b* angedeutet ist. Diese Ausbildung dient zur weiteren Geräusch- und Verschleißminderung, weil verhindert wird, daß das dritte Eingriffsglied an den Zahnfußen im Eingriff bleibt und zu einer Uberbesti mung fuhrt. Die Bereiche mit Spiel an den Zahnfußen sind vor allem da vorgesehen, wo der Modul der Verzahnung klein ist. Dies ist abhangig vom Krümmungsradius der Station, das heißt, an der Leimwalze 16 ist er kleiner als an der ebenen Vorderseite des Etikettenkastens 17. Besonders groß kann der Modul in den Bereichen zwischen den Stationen sein, wo es sogar zu einem Stillstand kommen kann, wie in Figur 3 für den links unten dargestellten Bereich vorgesehen ist. Es ist sogar denkbar, daß es in diesem Bereich zu einer kleinen Ruckdrehung kommt, wenn dadurch bessere Ergebnisse in der Verzögerung und in der Beschleunigung der Entnahmeelemente und damit in der Belastung der an der Bewegung beteiligten Elemente und eine Verminderung der Gerauschbildung erzielt werden können. In jedem Fall ist die Geometrie des Kurvenantriebes so gestaltet, daß bis auf wenige kurze Ubergangsbereiche immer nur e ein Eingriffsglied von je einem der beiden Satze m Eingriff mit den Kurven 20a, 20b steht. Die Zahnflanken sind durch Mateπalzurucknahme so gestaltet, daß sich für jedes Eingriffsglied an jeder Flanke ein sanfter Ein- und Auslauf ergibt. Schließlich und vor allem ist aber vorgesehen, daß zu Beginn der Abwalzbewegung eines Entnahmeelementes an einer Station, wie in Figur 2 dargestellt ist, treibend drehmomentwirksam nur das Eingriffsglied 23 mit dem längsten Hebelarm ist.It can be seen from FIGS. 3 and 4 that the curves 20a, 20b, which are designed as drive rack teeth, are designed with play on the tooth bases, as is indicated in FIG. 2 at two points 20a *, 20b *. This training serves to further reduce noise and wear, because it is prevented that the third engaging member remains in engagement on the tooth bases and leads to an over determination. The areas with play on the tooth bases are primarily intended where the toothing module is small. This depends on the radius of curvature of the station, that is, on the glue roller 16 it is smaller than on the flat front of the label box 17. The module can be particularly large in the areas between the stations, where it can even come to a standstill, such as in Figure 3 is provided for the area shown below left. It is even conceivable that there will be a slight jerk rotation in this area if better results in the deceleration and acceleration of the removal elements and thus in the loading of the elements involved in the movement and a reduction in noise can be achieved. In any case, the geometry of the cam drive is designed in such a way that, apart from a few short transition areas, only one engagement member of each of the two blocks is in engagement with the curves 20a, 20b. The tooth flanks are designed by material retraction so that there is a smooth in and out for each engagement element on each flank Spout results. Finally, and above all, it is provided that at the beginning of the rolling movement of a removal element at a station, as shown in FIG. 2, only the engagement member 23 with the longest lever arm is drivingly effective in terms of torque.
Das Ausfuhrungsbeispiel der Figuren 8 und 9 unterscheidet sich von dem der Figur 2 insofern, als der Verlauf der Kurven 20a, 20b etwas anders gestaltet ist. übereinstimmend mit der Kurve gemäß Figur 2 ist aber, daß die Zahnspitzen der beiden Kurven 20a, 20b seitlich neben den Radien R1,R2,R3 liegen, die durch die Mitten der einzelnen Stationen 16,17,18 gehen. Ferner stimmen sie darin uberein, daß der Modul der Kurven 20a, 20b in Drehrichtung des Tragers 20 im ersten Abschnitt hinter dem Etikettenkasten 17 und im ersten Abschnitt hinter dem Greiferzylinder 19 wesentlich großer ist als im Bereich zwischen der Leimwalze 16 und dem Etikettenkasten 17.The exemplary embodiment of FIGS. 8 and 9 differs from that of FIG. 2 in that the shape of the curves 20a, 20b is somewhat different. However, it is in agreement with the curve according to FIG. 2 that the tooth tips of the two curves 20a, 20b lie laterally next to the radii R1, R2, R3, which go through the centers of the individual stations 16, 17, 18. Furthermore, they agree that the module of the curves 20a, 20b in the direction of rotation of the carrier 20 is substantially larger in the first section behind the label box 17 and in the first section behind the gripper cylinder 19 than in the area between the glue roller 16 and the label box 17th
Ein wesentlicher Unterschied im Kurvenverlauf dieser Ausfuhrung besteht darin, daß das Eingriffsglied 25 mit dem längeren Hebelarm zu Beginn des Abschnittes mit dem großen Modul auf die Flanke eines Zahns 20a**, 20a*** mit verhältnismäßig kleinem Modul trifft, wenn das Entnahmeelement 5 gerade den Etikettenkasten 17 beziehungsweise den Greiferzylinder 19 verlaßt. Der Neigungswinkel der Zahnflanke des Zahns 20a**, 20a*** zum Radius des Tragers durch die Drehachse des Entnahmeelementes 5 betragt etwa 60°. Unter spitzen Winkeln zwischen 50° und 70° zum Radius des Tragers durch die Drehachse des betreffenden Entnahmeelementes lauft das Eingriffsglied 25 auf die Flanken der Zahne 20a**, 20a*** auf. Eine weitere Besonderheit besteht noch darin, daß das Entnahmeelement 5 nach Verlassen des Etikettenkastens 17 gegenüber der Bewegung am Etikettenkasten 17 beschleunigt wird, um ein sanftes Auflaufen des Eingriffsgliedes 25 auf die Zahnflanke zu erleichtern.An essential difference in the curve of this embodiment is that the engagement member 25 with the longer lever arm at the beginning of the section with the large module meets the flank of a tooth 20a **, 20a *** with a relatively small module when the removal element 5 is straight leaves the label box 17 or the gripper cylinder 19. The angle of inclination of the tooth flank of the tooth 20a **, 20a *** to the radius of the carrier through the axis of rotation of the removal element 5 is approximately 60 °. The engagement member 25 runs onto the flanks of the teeth 20a **, 20a *** at acute angles between 50 ° and 70 ° to the radius of the carrier through the axis of rotation of the removal element in question. A further special feature is that the removal element 5 is accelerated after leaving the label box 17 with respect to the movement on the label box 17 in order to facilitate a smooth running of the engagement member 25 onto the tooth flank.
Alle diese Maßnahmen führen dazu, daß bei einem minimalen konstruktiven Aufwand der Kurvenantrieb extrem laufruhig und verschleißarm ist. All of these measures mean that the cam drive is extremely quiet and low-wear with minimal design effort.

Claims

AN S P R U C H E EXPECTATIONS
1. Etikettierstation für Gegenstände, insbesondere Flaschen, mit mehreren längs einer Bahn hintereinander angeordneten Stationen, und zwar einer Leimwalze (15), einem Etikettenkasten (17) und einem1. Labeling station for objects, in particular bottles, with several stations arranged one behind the other along a path, namely a glue roller (15), a label box (17) and one
Etikettenübertragungszylinder (19), sowie mit mindestens einem auf einem sich drehenden Träger (1) drehbar gelagerten und bei jeder Umdrehung des Trägers (1) an den Stationen (15,17,19) vorbeibewegten Entnahmeelement (2,3,4) für die Etiketten, das jeweils eine nach außen gewölbte, sich auf dem jeweils vorderen Etikett des Etikettenkastens (17) und an den anderen Stationen (15,19) abwälzende Aufnahmefläche (5,6,7) für das Etikett aufweist, wobei als Antrieb für jedes Entnahmeelement (2,3,4) ein Kurvengetriebe (20,21 bis 30) vorgesehen ist, das aus einer für alle Entnahmeelemente (2,3,4) gemeinsamen, ortsfesten Doppelkurvenscheibe (20) mit in zwei Ebenen übereinander und mit Abstand voneinander angeordneten einseitigen Kurven (20a, 20b) und aus zwei Sätzen von Eingriffsgliedern (24 , 25; 29, 30) mit verschieden langen wirksamen Hebelarmen besteht, die mittels eines Trägerelements (21) auf einer Antriebswelle (31) des Entnahmeelementes (2,3,4) gelagert sind und durch Formschluß mit den beiden Kurven (20a, 20b) bei Drehung des Trägers (1) den Zwangslauf eines jeden Entnahmeelementes (2,3,4) über seine Vollumdrehung sichern, wobei die Antriebswelle (31) vor der Ebene, in der die dieser Welle (31) nächstliegende erste Kurve (20a) liegt, endet, und wobei die Eingriffsglieder (29,30), die der zweiten Kurve (20b) zugeordnet sind, an einem zwischen den beiden Kurven (20a, 20b) liegenden Brückenglied (26) drehversetzt gelagert sind, das von den Eingriffsgliedern (24,25) der ersten Kurve (20a) getragen ist, d a d u r c h g e k e n n z e i c h n e t, daß die Doppelkurvenscheibe (20) mit ihren beiden Kurven (20a, 20b) nach Art einer innenverzahntenLabel transfer cylinder (19), and with at least one removal element (2, 3, 4) for the labels, which is rotatably mounted on a rotating support (1) and moves past the stations (15, 17, 19) at each rotation of the support (1) , each of which has an outwardly curved receiving surface (5, 6, 7) for the label that rolls on the front label of the label box (17) and at the other stations (15, 19), the drive for each removal element ( 2, 3, 4) a cam mechanism (20, 21 to 30) is provided which consists of a fixed double cam disc (20) common to all removal elements (2, 3, 4) with one-sided curves arranged one above the other and at a distance from one another (20a, 20b) and consists of two sets of engagement members (24, 25; 29, 30) with lever arms of different lengths, which are mounted on a drive shaft (31) of the removal element (2, 3, 4) by means of a carrier element (21) are and by Formsch with the two curves (20a, 20b) when the carrier (1) rotates, ensure that each removal element (2, 3, 4) runs smoothly over its full rotation, with the drive shaft (31) facing the plane in which this shaft ( 31) nearest first curve (20a) ends, and where the engaging members (29,30), which are assigned to the second curve (20b), are mounted in a rotationally offset manner on a bridge member (26) lying between the two curves (20a, 20b), which is separated from the engagement members (24,25) of the first curve (20a ) is worn, characterized in that the double cam (20) with its two curves (20a, 20b) like an internally toothed
Triebstockverzahnung zumindest im Bereich der Stationen (15,17,19) derart ausgebildet ist, daß davon unmittelbar (ohne Übersetzungsgetriebe) die Drehbewegung der Entnahmeelemente (2,3,4) abgeleitet wird und dabei bis auf kurze Übergangsbereiche von den Eingriffsgliedern jeweils nur ein Eingriffsglied (2 , 25; 29, 30) je Satz mit der Doppelkurve (20a, 20b) im Eingriff sich befindet, und daß von den Eingriffsgliedern (24 , 25; 29, 30) nur ein Eingriffsglied (25) den längeren wirksamen Hebelarm als die anderen Eingriffsglieder (24,29,30) hat und dieses Eingriffsglied (25) in der Anfangsphase der Abwälzbewegung der Aufnahmefläche (5,6,7) an den Stationen (15,17,19) sich zusätzlich im drehmomentwirksamen, treibenden Eingriff mit der Doppelkurve (20a, 20b) befindet.Triebstock gearing, at least in the area of the stations (15, 17, 19), is designed in such a way that the rotary movement of the removal elements (2, 3, 4) is derived directly from it (without transmission gear) and only one engagement member apart from the short transition areas (2, 25; 29, 30) per set with the double cam (20a, 20b) is in engagement, and that of the engagement members (24, 25; 29, 30) only one engagement member (25) has the longer effective lever arm than that has other engaging members (24, 29, 30) and this engaging member (25) in the initial phase of the rolling motion of the receiving surface (5, 6, 7) at the stations (15, 17, 19) additionally engages with the double cam in a torque-effective, driving manner (20a, 20b).
2. Etikettierstation nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die2. Labeling station according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the
Triebstockverzahnung zumindest in einigen Bereichen mit Spiel an den Zahnfüßen ausgebildet ist.Triebstock gearing is formed at least in some areas with play on the tooth feet.
3. Etikettierstation nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t, daß der3. Labeling station according to claim 1 or 2, d a d u r c h g e k e n n z e i c h n e t that the
Modul der Doppelkurve (20a, 20b) zwischen den Stationen (15,17,19) so groß ist, daß das Entnahmeelement (2,3,4) nach Verlassen einer Station (15,17,19) nur bis in die erforderliche Drehstellung am Anfang der Abwalzbewegung an der nächsten Station gedreht wird.Module of the double curve (20a, 20b) between the stations (15,17,19) is so large that the removal element (2,3,4) after leaving a station (15,17,19) only up to the required rotary position at the beginning of the rolling movement is rotated at the next station.
4. Etikettierstation nach Anspruch 3, d a d u r c h g e k e n n z e i c h n e t, daß der4. labeling station according to claim 3, d a d u r c h g e k e n n z e i c h n e t that the
Modul zwischen einzelnen Stationen (15,17,19) für die Drehbewegung bis zum Stillstand eingerichtet ist.Module between individual stations (15,17,19) is set up for the rotary movement to a standstill.
5. Etikettierstation nach einem der Ansprüche5. Labeling station according to one of the claims
d a d u r c h g e k e n n z e i c h n e t, daß der gegenseitige Drehwinkelversatz der Eingriffsglieder (24,25;29, 30) mindestens für einige ≠ 90° ist.d a d u r c h g e k e n n z e i c h n e t that the mutual angular displacement of the engagement members (24,25; 29, 30) is at least for some ≠ 90 °.
6. Etikettierstation nach einem der Ansprüche6. Labeling station according to one of the claims
d a d u r c h g e k e n n z e i c h n e t, daß die innenverzahnten Kurven (20a, 20b) in Drehrichtung des Tragers (21) in einem Abschnitt sowohl hinter dem Etikettenkasten (17) als auch hinter dem Greiferzylinder (19) einen wesentlich größeren Modul als im Bereich zwischen der Leimwalze (16) und dem Etikettenkasten (17) haben und daß das jeweilige Eingriffsglied (25) mit dem längeren wirksamen Hebelarm sich im drehmomentwirksamen Eingriff mit einer Zahnflanke eines Zahns (20a** , 20a*** ) der zugeordneten Kurve (20a) am Anfang des Kurvenabschnittes mit dem größeren Modul befindet, die zum Radius des Tragers (21) durch die Drehachse des Entnahmeelementes (5) einen Neigungswinkel von höchstens 70° im Bereich der Zahnspitze hat.characterized in that the internally toothed curves (20a, 20b) in the direction of rotation of the carrier (21) in a section both behind the label box (17) and behind the gripper cylinder (19) a much larger module than in the area between the glue roller (16) and have the label box (17) and that the respective engagement member (25) with the longer effective lever arm engages in torque-effective engagement with a tooth flank of a tooth (20a **, 20a ***) of the associated curve (20a) at the beginning of the curve section with the Larger module is located, which has an angle of inclination of at most 70 ° in the region of the tooth tip to the radius of the carrier (21) through the axis of rotation of the removal element (5).
7. Etikettierstation nach Anspruch 6, d a d u r c h g e k e n n z e i c h n e t, daß der7. labeling station according to claim 6, d a d u r c h g e k e n n z e i c h n e t that the
Neigungswinkel mindestens 50° betragt. Tilt angle is at least 50 °.
8. Etikettierstation nach Anspruch 6 oder 7, d a d u r c h g e k e n n z e i c h n e t, daß das jeweilige Entnahmeelement (5) unmittelbar nach Verlassen des Etikettenkastens (17) beschleunigt wird bis das Eingriffsglied (25) mit dem längeren Hebelarm mit der zugeordneten Kurve (20b) in Eingriff gelangt.8. Labeling station according to claim 6 or 7, so that the respective removal element (5) is accelerated immediately after leaving the label box (17) until the engaging member (25) engages with the longer lever arm with the associated curve (20b).
9. Etikettierstation nach einem der Ansprüche 1 bis9. Labeling station according to one of claims 1 to
8, d a d u r c h g e k e n n z e i c h n e t, daß die8, d a d u r c h g e k e n n z e i c h n e t that the
Zahnspitze der Doppelkurve (20a, 20b) an allen Stationen (16,17,19) seitlich der durch die Mitte der Stationen (16,17,19) verlaufenden Radien (R1,R2,R3) des Trägers (21) liegen.Tooth tip of the double curve (20a, 20b) at all stations (16, 17, 19) lie to the side of the radii (R1, R2, R3) of the carrier (21) running through the center of the stations (16, 17, 19).
10. Etikettierstation nach einem der Ansprüche 1 bis 9, d a d u r c h g e k e n n z e i c h n e t, daß die10. Labeling station according to one of claims 1 to 9, d a d u r c h g e k e n n z e i c h n e t that the
Antriebswelle (8,9,10) eines jeden Entnahmeelementes (2,3,4) eine über dem Trägerelement (21) für die Eingriffsglieder (24 , 25; 29, 30) angeordnete Lagerung (31) aufweist, über der eine Schmiermittelzuführung (32) stationär auf dem Träger (1) angeordnet ist.The drive shaft (8, 9, 10) of each removal element (2, 3, 4) has a bearing (31) which is arranged above the carrier element (21) for the engagement members (24, 25; 29, 30) and via which a lubricant supply (32 ) is arranged stationary on the carrier (1).
11. Etikettierstation nach Anspruch 10, d a d u r c h g e k e n n z e i c h n e t, daß das11. Labeling station according to claim 10, d a d u r c h g e k e n n z e i c h n e t that the
Trägerelement (21) an seiner der Lagerung (31) zugekehrten Seite als Verteilerteller für das von der Lagerung (31) abtropfende und an die den Rand des Verteilertellers teilweise überragende Eingriffsglieder (24, 25; 29, 30) zu gebende Schmiermittel ausgebildet ist. Carrier element (21) on its side facing the bearing (31) is designed as a distributor plate for the lubricant to be dripped from the bearing (31) and partially to the engagement members (24, 25; 29, 30) projecting beyond the edge of the distributor plate.
12. Etikettierstation nach Anspruch 10 oder 11, d a d u r c h g e k e n n z e i c h n e t , daß die12. labeling station according to claim 10 or 11, d a d u r c h g e k e n n z e i c h n e t that the
Eingriffsglieder (20,24,23,25) an der Unterseite des Trägerelementes (21) angeformt sind. Engagement members (20,24,23,25) are integrally formed on the underside of the carrier element (21).
EP98945187A 1997-08-13 1998-08-08 Labelling station for objects, in particular bottles, in a labelling machine with low-noise and low-wear double cam drive Expired - Lifetime EP1003676B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29824704U DE29824704U1 (en) 1997-08-13 1998-08-08 Labeling station for objects, in particular bottles, in a labeling machine with a low-noise and low-wear drive

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE19735086 1997-08-13
DE1997135086 DE19735086C2 (en) 1997-08-13 1997-08-13 Labeling station for objects, especially bottles, in a labeling machine with a low-noise and low-wear drive
DE29715370 1997-08-27
DE29715370U 1997-08-27
DE29716294U DE29716294U1 (en) 1997-08-13 1997-09-10 Labeling station for objects, in particular bottles, in a labeling machine with a low-noise and low-wear drive
DE29716294U 1997-09-10
PCT/EP1998/005040 WO1999008937A1 (en) 1997-08-13 1998-08-08 Labelling station for objects, in particular bottles, in a labelling machine with low-noise and low-wear double cam drive

Publications (2)

Publication Number Publication Date
EP1003676A1 true EP1003676A1 (en) 2000-05-31
EP1003676B1 EP1003676B1 (en) 2003-04-02

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US (1) US6527029B1 (en)
EP (1) EP1003676B1 (en)
AT (1) ATE236048T1 (en)
BR (1) BR9811895A (en)
ES (1) ES2196602T3 (en)
WO (1) WO1999008937A1 (en)

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Publication number Priority date Publication date Assignee Title
DE10314945B4 (en) * 2003-04-02 2005-03-10 Roland Man Druckmasch Folding device with folding drum

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Publication number Priority date Publication date Assignee Title
DE2325244C3 (en) * 1973-05-18 1981-01-29 Jagenberg-Werke Ag, 4000 Duesseldorf Device for separating and transporting sheet-shaped blanks, in particular labels
JPS537359B2 (en) * 1974-04-11 1978-03-16
DE2436003C3 (en) * 1974-07-26 1982-02-25 Jagenberg-Werke AG, 4000 Düsseldorf Labeling machine
FR2344763A1 (en) * 1976-03-16 1977-10-14 Baele Gangloff Ste Nouvelle Variable speed labelling machine - has cam controlling planetary wheels which drive rotary transfer pads
US4060229A (en) * 1976-03-29 1977-11-29 A-T-O Inc. Rotary glue picker
DE2901853C2 (en) * 1979-01-18 1983-05-19 Jagenberg-Werke AG, 4000 Düsseldorf Labeling station of a labeling machine for objects, in particular bottles
FR2437986B1 (en) * 1978-10-06 1985-06-21 Jagenberg Werke Ag LABELING MACHINE FOR OBJECTS AND PARTICULARLY FOR BOTTLES
DE2954229C2 (en) * 1979-01-18 1984-10-11 Jagenberg AG, 4000 Düsseldorf Labeling station of a labeling machine for objects
DE3013082A1 (en) * 1980-04-03 1981-10-08 Jagenberg-Werke AG, 4000 Düsseldorf LABELING STATION OF A LABELING MACHINE, IN PARTICULAR BOTTLES
DE3908378A1 (en) 1989-03-15 1990-09-27 Eti Tec Maschinenbau Labelling station for objects, in particular bottles
EP0337131B1 (en) * 1988-04-09 1992-11-04 Eti-Tec Maschinenbau Gmbh Labelling station for articles, especially for bottles
EP0337168B1 (en) * 1988-04-09 1993-01-27 Eti-Tec Maschinenbau Gmbh Labelling station for articles, especially for bottles
DE3811869A1 (en) 1988-04-09 1989-10-19 Eti Tec Maschinenbau Labelling station for articles, in particular bottles
FR2634455A1 (en) * 1988-07-25 1990-01-26 Olive Llobet Francesco DEVICE FOR THE STITCHING AND THE TRANSFER OF LABELS ON LABELING MACHINES OF PACKAGING

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Title
See references of WO9908937A1 *

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BR9811895A (en) 2000-08-22
ATE236048T1 (en) 2003-04-15
US6527029B1 (en) 2003-03-04
ES2196602T3 (en) 2003-12-16
EP1003676B1 (en) 2003-04-02
WO1999008937A1 (en) 1999-02-25

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