EP3255001B1 - Unwinder for a tape, such as label tape - Google Patents

Unwinder for a tape, such as label tape Download PDF

Info

Publication number
EP3255001B1
EP3255001B1 EP17000946.8A EP17000946A EP3255001B1 EP 3255001 B1 EP3255001 B1 EP 3255001B1 EP 17000946 A EP17000946 A EP 17000946A EP 3255001 B1 EP3255001 B1 EP 3255001B1
Authority
EP
European Patent Office
Prior art keywords
rocker
lever
cam
acting
pendulum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17000946.8A
Other languages
German (de)
French (fr)
Other versions
EP3255001A1 (en
Inventor
Roger Thiel
Stephan Deckert
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.)
Cab Produkttechnik Gesellschaft fur Computer- und Automations-Bausteine Mbh & Co KG
Original Assignee
Cab Produkttechnik Gesellschaft fur Computer- und Automations-Bausteine Mbh & Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cab Produkttechnik Gesellschaft fur Computer- und Automations-Bausteine Mbh & Co KG filed Critical Cab Produkttechnik Gesellschaft fur Computer- und Automations-Bausteine Mbh & Co KG
Publication of EP3255001A1 publication Critical patent/EP3255001A1/en
Application granted granted Critical
Publication of EP3255001B1 publication Critical patent/EP3255001B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/30—Supports; Subassemblies; Mountings thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/50—Machine elements
    • B65H2402/54—Springs, e.g. helical or leaf springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/50—Driving mechanisms
    • B65H2403/51—Cam mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/70—Clutches; Couplings
    • B65H2403/72—Clutches, brakes, e.g. one-way clutch +F204
    • B65H2403/725—Brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/15—Roller assembly, particular roller arrangement
    • B65H2404/152—Arrangement of roller on a movable frame
    • B65H2404/1521—Arrangement of roller on a movable frame rotating, pivoting or oscillating around an axis, e.g. parallel to the roller axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00—Specific machines
    • B65H2408/20—Specific machines for handling web(s)
    • B65H2408/21—Accumulators
    • B65H2408/217—Accumulators of rollers type, e.g. with at least one fixed and one movable roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/32—Torque e.g. braking torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/113—Size
    • B65H2701/1133—Size of webs
    • B65H2701/11332—Size of webs strip, tape, narrow web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/194—Web supporting regularly spaced adhesive articles, e.g. labels, rubber articles, labels or stamps

Definitions

  • the invention relates to an unwinding device for a tape, such as a label tape, according to the preamble of claim 1.
  • Such unwinding devices are used on label printers, labeling devices and labeling machines.
  • a carrier tape is pulled over a first pendulum arm of a pivoted, elastically prestressed pendulum lever (also called a dancer arm).
  • the pendulum lever creates a loop in the tape, which is referred to as label storage.
  • the label store can be enlarged by the formation of further loops formed by guiding the strip of partially also pivotably mounted deflection rollers.
  • Label rolls usually consist of a roll core and the carrier tape wound up spirally on which the labels are located. The roll core can be tightly clamped to a roll carrier of the unwinding device.
  • a label memory is required to move the sluggish label roll from the actual work process to the Sample printing or donations, decouple.
  • the label roll can be accelerated from standstill and into standstill much more slowly than the acceleration ramps of a printing or dispensing process require.
  • the spring-loaded pendulum arm avoids a jerky acceleration of the label roll.
  • a uniform tension in the carrier tape should be aimed for and a sudden increase in tension in the carrier tape should be avoided in order to achieve a good printing result or a good labeling result.
  • the position of the pendulum lever controls a brake, which is opened when the label store is low and is closed under spring force when the label store is full.
  • Band brakes are commonly used in such unwinding devices. This band brake is usually actuated via an eccentric which is in constant contact with the swing arm of the band brake. There is a direct relationship between braking time and braking force.
  • a brake wheel is non-rotatably connected to the label roll and is wrapped around in some areas by a brake band, the band tension of which and thus the braking torque acting on the brake wheel is controlled by the position of the pendulum arm in such a way that the pendulum arm acts on a rocker via an eccentrically arranged control disk in such a way that under the tensile force of the springs acting on the pendulum arm, this pulls the brake band against the brake wheel against a spring acting on the rocker arm, the latter releasing the brake band when the label band exerts tension on the pendulum arm.
  • the spring acting on the rocker therefore serves to release the brake band from the brake disc, while the force exerted on the brake disc via the rocker and brake band is caused directly by the springs acting on the pendulum arm.
  • the CN 102 372 104 A Although it has a pendulum lever 1 with a deflection roller at the free end and a braking device formed by two brackets, it does not have a single rocker arm that can be pivoted elastically.
  • no cam acting on a rocker is arranged eccentrically on a pendulum lever, since there the cam acting on the brake arches can be pivoted about the same pivot point as the pendulum lever itself.
  • the UK 2 345 692 shows an unwinding device for a Belt in which a pendulum lever equipped with a deflection roller is arranged separately and at a large distance from the carrier roller.
  • a spring acts on the arm of the pendulum lever opposite the deflection roller.
  • a braking device is formed by a braking band laid around a braking roller, which is firmly connected to a linearly elastically loaded rod, via which a cam also rigidly attached to the pivot point of the pivoting lever acts indirectly.
  • a cam is fixed to a lever arm and is therefore not adjustable, so that the braking time cannot be changed.
  • CH 624 911 A5 it is an unwinding device for a material strip wound on a supply roll with a spring-loaded lever around whose deflection roller, referred to as a dancer roller, the material strip is guided under tension.
  • a brake release cam is fixed to the lever and acts on a lever acting on a brake band.
  • the invention is based on the object of separating the braking effect acting on the roller carrier or the braking roller firmly connected to it in terms of time and force from the pivoting lever and the forces acting there.
  • the pendulum lever has two arms and a cam is arranged on an arm other than the deflection roller
  • the cam arranged on the second arm of the pivoted lever facing away from the deflection roller can lift the rocker in a pivoting manner against the spring force acting on it to release the braking effect when the deflection roller for the label tape at its free end bearing arm of the pivoted lever the pull-off force of the label tape (caused by a pull-off device acting on this) acts.
  • the force of the springs which act on the pendulum lever and preload it, is not used to directly apply the brake. Braking time and braking force can be adjusted independently of each other, so that when printing or labeling labels of different widths, only the required lower or higher braking force needs to be set.
  • the pendulum lever can be pivoted against the elastic tension acting on it when force is applied to its free end carrying the deflection roller.
  • the force transmitters causing the braking by the rocker are preferably effected by separate springs.
  • This prestressed, acting on the rocker and an eccentric cam connection between the rocker arm and the rocker causing the braking, has the advantage that the force exerted by the rocker on the roll carrier and thus the label tape roll is no longer caused by the springs pretensioning the rocker arm must be effected, but is effected by the inventively provided separate springs associated with the rocker, so that the bias acting on the pendulum lever and the braking tension of the rocker can be selected or adjusted independently of one another.
  • a preferred development of the device according to the invention provides that the pendulum lever can be pivoted against the elastic tension acting on it when force is applied to its free end carrying the deflection roller.
  • the cam engages in a recess in the rocker, the recess in the rocker being an elongated hole, in particular an oval elongated hole.
  • the elastic tensions or forces acting on the one hand on the pivoting lever and on the other hand on the rocker are preferably generated in that the tension exerted on the pivoting lever and/or rocker is brought about by at least one spring, in particular by at least one helical spring.
  • the cam can be adjusted angularly around the axis of the pivoting lever. This allows the braking time to be adjusted. Furthermore, it is provided that the elastic force acting on the rocker can be changed, in particular by changing the spring force and/or the number of springs causing the elastic force acting on the rocker.
  • the unwinding device has a rotatably mounted roll carrier 2 and a plate 3 with a circular outer contour that is firmly connected to it on one side. This acts as a contact surface for a label roll R, which is formed by a label strip B spirally wound onto a roll core K.
  • the roller core K can be clamped in a rotationally fixed manner with the roller carrier 2 and is clamped in a rotationally fixed manner in the operating state.
  • the label strip B consists of a carrier strip on which labels are glued at a slight distance from one another.
  • the unwinding device 1 also has a first, stationary but rotatably mounted deflection roller 4 and an elastically prestressed pendulum lever 5, on one of which, in the 1 Visible end 5.1 of an arm 5.2 another deflection roller 6 is rotatably mounted.
  • the unwinding device 1 is part of a labeling machine or a label printer which--not shown--further guide or deflection rollers, a motor-driven withdrawal device, by means of which the tape B is withdrawn from the roll R, a label dispensing device for transferring the labels located on the belt to a product to be labeled and optionally can have a label printer for printing the labels.
  • the pendulum lever 5 is in a position in which no forces are exerted on it by the band B or the pull-off force acting on it, i.e. for example when the device is at a standstill, whereby it acts on the pendulum lever 5 and elastic pretension (which is described below will be explained in more detail).
  • the double length between the deflection roller 4 and deflection roller 6 in the illustrated unloaded position of the swivel arm 5 is called the—maximum—label storage.
  • a peeling force is exerted intermittently and while the labels are being transferred and possibly also being printed on, the tape is at a standstill at the printing or transfer location.
  • the roll R or a correspondingly freely rotatably mounted roll carrier 2 can continue to roll due to the inertia caused by its mass when it is stationary, so that there is a risk that the tape between the roll R and the take-off point will spill when it rolls beyond the maximum size of the label store E is no longer under tension, but rather is kept loose and can run in curves or loops.
  • the tape is pulled off again by the pull-off device, there is a risk that the tape will be torn.
  • an automatically acting braking device connected to the latter is regularly provided on the roller carrier 2 and thus the roller R when the belt tension acting on the pendulum lever 5 decreases.
  • the 2 shows the back of the unwinding device 1 and first of all the plate 3 and the pendulum lever 5 with the deflection roller 6 at the free end 5.1 of a first lever arm 5.2 of the pendulum lever 5.
  • the device 1 has a housing 7 on which all other parts are directly or indirectly are pivotally or rotatably mounted, so the plate 3 and with it the roller carrier 2 about a central pivot axis A1.
  • the role carrier 2 has on in the 2 illustrated back of the plate 3 an approach 2.1 also with a circular outer contour.
  • the others also in the 2 illustrated parts of the unwinding device 1 according to the invention are described in more detail below with reference to FIG Figures 3 to 5 explained.
  • the 3 shows in opposite of 2 enlarged representation seen from the back behind the in the 2 visible elements located in a lower level further elements, in particular the pendulum lever 5, which is mounted about a pivot axis A2.
  • the pendulum lever 5 is formed with two arms with the reference to the 1 mentioned lever arm 5.2 and relative to the axis of rotation A2 diametrically opposite pivot lever 5.3.
  • An eccentric cam 5.4 is provided on the lever arm 5.3 on the pivoting lever 5.3 eccentrically to the pivoting axis A2.
  • the cam 5.4 can be angularly adjusted about the axis A2 with its central axis for setting the braking time, for example from a position A4 to a position A4' - as in 3 shown.
  • the Fig.4 shows a front plane in the rear view shown there compared to that 3 located rocker 10, which is pivotally mounted about a pivot axis A3.
  • the rocker 10 points in the area of a free end 10.1 a slot into which the cam 5.4 of the pendulum lever 5 engages.
  • three second helical springs 11 act on the rocker 10--in the illustrated embodiment--which in turn are fastened at their lower end to the frame 7, specifically to a cross member 7.2.
  • the rocker 10 Between its axis of rotation A3 and its end region 10.1 with the slot 10.2 and the point of attack of the second springs 10, the rocker 10 holds a brake band 12, which is guided around the attachment 2.1 of the roller carrier.
  • the braking device 9 (der 4 ) is in the Fig.5 once again for clarification as such, shown in perspective detached from other parts of the unwinding device. For explanation, reference is made to the above description.
  • the brake band 12 attached to the rocker 10 is thus pulled against the extension 2.1 of the roll carrier 2 and a braking effect is thus exerted on this and the label tape roll R sitting non-rotatably on it, so that it is brought to a standstill and held, also against a subsequent rotary movement due to the inertia of the roller R, if a tape withdrawal has previously taken place.

Landscapes

  • Labeling Devices (AREA)

Description

Die Erfindung betrifft eine Abwickelvorrichtung für ein Band, wie ein Etikettenband, nach dem Oberbegriff des Anspruchs 1.The invention relates to an unwinding device for a tape, such as a label tape, according to the preamble of claim 1.

Solche Abwickelvorrichtungen werden an Etikettendruckern, Etikettiergeräten und Etikettiermaschinen verwendet. Ein Trägerband wird beim Abwickeln über einen ersten Pendelarm eines schwenkbar gelagerten, elastisch vorgespannten Pendelhebels (auch Tänzerarm genannt) gezogen. Der Pendelhebel erzeugt eine Schlaufe des Bandes, welche als Etikettenspeicher bezeichnet wird. Der Etikettenspeicher kann durch die Bildung weiterer durch Führung des Bandes von teilweise ebenfalls schwenkbar gelagerter Umlenkrollen gebildeter Schlaufen vergrößert werden. Etikettenrollen bestehen meist aus einem Rollenkern und dem darauf spiralförmig aufgewickelten Trägerband, auf welchem sich wiederum Etiketten befinden. Der Rollenkern ist fest mit einem Rollenträger der Abwickelvorrichtung verspannbar.Such unwinding devices are used on label printers, labeling devices and labeling machines. During unwinding, a carrier tape is pulled over a first pendulum arm of a pivoted, elastically prestressed pendulum lever (also called a dancer arm). The pendulum lever creates a loop in the tape, which is referred to as label storage. The label store can be enlarged by the formation of further loops formed by guiding the strip of partially also pivotably mounted deflection rollers. Label rolls usually consist of a roll core and the carrier tape wound up spirally on which the labels are located. The roll core can be tightly clamped to a roll carrier of the unwinding device.

Grundsätzlich wird ein Etikettenspeicher benötigt, um die träge Etikettenrolle vom eigentlichen Arbeitsvorgang, zum Beispiel Drucken oder Spenden, zu entkoppeln. Durch diese Entkopplung kann die Beschleunigung der Etikettenrolle aus dem Stillstand und in den Stillstand sehr viel langsamer erfolgen als die Beschleunigungsrampen eines Druck- oder Spendevorganges dies erfordern. Durch den gefederten Pendelarm wird eine ruckartige Beschleunigung der Etikettenrolle vermieden.Basically, a label memory is required to move the sluggish label roll from the actual work process to the Sample printing or donations, decouple. As a result of this decoupling, the label roll can be accelerated from standstill and into standstill much more slowly than the acceleration ramps of a printing or dispensing process require. The spring-loaded pendulum arm avoids a jerky acceleration of the label roll.

Insbesondere bei hohen Geschwindigkeiten ist eine gleichmäßige Spannung in dem Trägerband anzustreben und ein ruckartiger Anstieg der Spannung in dem Trägerband zu vermeiden, um ein gutes Druckergebnis bzw. ein gutes Etikettierergebnis zu erreichen.In particular at high speeds, a uniform tension in the carrier tape should be aimed for and a sudden increase in tension in the carrier tape should be avoided in order to achieve a good printing result or a good labeling result.

Bei bekannten Abwickelvorrichtungen steuert die Stellung des Pendelhebels eine Bremse, welche bei einem geringen Etikettenspeicher geöffnet ist und bei einem gefüllten Etikettenspeicher unter Federkraft geschlossen ist.In known unwinding devices, the position of the pendulum lever controls a brake, which is opened when the label store is low and is closed under spring force when the label store is full.

Üblicherweise werden in solchen Abwickelvorrichtungen Bandbremsen verwendet. Die Betätigung dieser Bandbremse erfolgt in der Regel über einen Exzenter, der im ständigen Kontakt mit der Schwinge der Bandbremse ist. Es besteht eine direkte Abhängigkeit von Bremszeitpunkt und Bremskraft.Band brakes are commonly used in such unwinding devices. This band brake is usually actuated via an eccentric which is in constant contact with the swing arm of the band brake. There is a direct relationship between braking time and braking force.

Die Energie zum Betätigen dieser Bandbremse wird bisher aus dem Arbeitsvermögen der Feder bzw. den Federn des Pendelhebels geholt. Somit wird das Arbeitsvermögen der Federn des Pendelhebels, je nach Belastung, in den Bremsvorgang und in die Bewegung des Pendelhebels aufgeteilt.The energy for actuating this band brake has hitherto been obtained from the working capacity of the spring or the springs of the pendulum lever. Thus, the working capacity of the springs of the pendulum lever, depending on the load, is divided into the braking process and the movement of the pendulum lever.

Dies gilt auch für eine gattungsgemäße Abwickelvorrichtung nach der DE 20 2006 005 557 U1 mit einer Bremse zur Abwicklung eines Etikettenbandes oder dergleichen von einer Etikettenrolle nach der DE 20 2006 005 557 U1 . Bei dieser Vorrichtung ist ein federbeaufschlagter Pendelarm an einem Gehäuse angelegt. Der Pendelarm ist zur Führung des Etikettenbandes ausgebildet. Er steuert durch seine Lage die Zugspannung in diesem Etikettenband. Hierzu ist ein Bremsrad mit der Etikettenrolle drehfest verbunden und bereichsweise von einem Bremsband umschlungen, dessen Bandspannung und damit das auf das Bremsrad wirkende Bremsmoment von der Stellung des Pendelarms gesteuert ist und zwar derart, dass der Pendelarm über eine exzentrisch angeordnete Steuerscheibe auf eine Schwinge derart wirkt, dass diese unter der Zugkraft der am Pendelarm angreifenden Federn das Bremsband gegen das Bremsrad entgegen einer an der Schwinge angreifenden Feder zieht, die letztere bei Zugausübung durch das Etikettenband auf den Pendelarm das Bremsband freigibt. Die an der Schwinge angreifende Feder dient daher zum Lösen des Bremsbandes von der Bremsscheibe, während die auf die Bremsscheibe über Schwinge und Bremsband ausgeübte Kraft unmittelbar durch die am Pendelarm angreifenden Federn bewirkt wird.This also applies to a generic unwinding after DE 20 2006 005 557 U1 with a brake for unwinding a label tape or the like from a label roll after DE 20 2006 005 557 U1 . In this device, a spring-loaded pendulum arm is applied to a housing. The pendulum arm is designed to guide the label tape. Its position controls the tensile stress in this label strip. For this purpose, a brake wheel is non-rotatably connected to the label roll and is wrapped around in some areas by a brake band, the band tension of which and thus the braking torque acting on the brake wheel is controlled by the position of the pendulum arm in such a way that the pendulum arm acts on a rocker via an eccentrically arranged control disk in such a way that under the tensile force of the springs acting on the pendulum arm, this pulls the brake band against the brake wheel against a spring acting on the rocker arm, the latter releasing the brake band when the label band exerts tension on the pendulum arm. The spring acting on the rocker therefore serves to release the brake band from the brake disc, while the force exerted on the brake disc via the rocker and brake band is caused directly by the springs acting on the pendulum arm.

Die CN 102 372 104 A , weist zwar einen Pendelhebel 1 mit einer Umlenkrolle am freien Ende sowie eine durch zwei Bügel gebildete Bremsvorrichtung auf, nicht aber eine einzige schwenkbar elastisch beaufschlagte Schwinge. Beim Gegenstand der Druckschrift ist kein auf einer Schwinge einwirkender Nocken exzentrisch einem Pendelhebel angeordnet, da dort der auf die Bremsbögen einwirkende Nocken um den gleichen Schwenkpunkt verschwenkbar ist wie der Pendelhebel selbst. Ein verstellbarer Nocken ist nicht vorhanden.the CN 102 372 104 A Although it has a pendulum lever 1 with a deflection roller at the free end and a braking device formed by two brackets, it does not have a single rocker arm that can be pivoted elastically. In the subject of the publication, no cam acting on a rocker is arranged eccentrically on a pendulum lever, since there the cam acting on the brake arches can be pivoted about the same pivot point as the pendulum lever itself. There is no adjustable cam.

Die GB 2 345 692 zeigt eine Abwickelvorrichtung für ein Band, bei der ein mit einer Umlenkrolle versehener Pendelhebel separat und mit weitem Abstand zur Trägerrolle angeordnet ist. Auf dem der Umlenkrolle gegenüberliegenden Arm des Pendelhebels wirkt eine Feder. Eine Bremsvorrichtung ist durch ein um eine Bremsrolle herumgelegtes Bremsband gebildet, das mit einem linear elastisch beaufschlagten Stab fest verbunden ist, über den indirekt ein ebenfalls am Drehpunkt des Schwenkhebels starr befestigter Nocken einwirkt. Eine Schwinge zusätzlich zum Pendelhebel, über die die Bremswirkung erzeugt wird, ist nicht vorhanden, da der mit dem Bremsband verbundene Stab nur linear bewegbar ist. Ein Nocken ist fest einem Hebelarm angeordnet und damit nicht einstellbar, so dass der Bremszeitpunkt nicht veränderbar ist.the UK 2 345 692 shows an unwinding device for a Belt in which a pendulum lever equipped with a deflection roller is arranged separately and at a large distance from the carrier roller. A spring acts on the arm of the pendulum lever opposite the deflection roller. A braking device is formed by a braking band laid around a braking roller, which is firmly connected to a linearly elastically loaded rod, via which a cam also rigidly attached to the pivot point of the pivoting lever acts indirectly. There is no rocker in addition to the pendulum lever, which is used to generate the braking effect, since the rod connected to the brake band can only be moved linearly. A cam is fixed to a lever arm and is therefore not adjustable, so that the braking time cannot be changed.

Beim Gegenstand der CH 624 911 A5 , handelt es sich um eine Abspulvorrichtung für ein auf einer Vorratsrolle aufgewickeltes Materialband mit einem federbelasteten Hebel um dessen als Tänzerwalze bezeichnete Umlenkrolle das Materialband unter Zugspannung geführt ist. Am Hebel ist ein Bremslösenocken fest angeordnet, der auf einen auf ein Bremsband einwirkenden Hebel einwirkt.At the subject of CH 624 911 A5 , it is an unwinding device for a material strip wound on a supply roll with a spring-loaded lever around whose deflection roller, referred to as a dancer roller, the material strip is guided under tension. A brake release cam is fixed to the lever and acts on a lever acting on a brake band.

Der Erfindung liegt die Aufgabe zugrunde, die auf den Rollenträger bzw. die mit diesem fest verbundene Bremsrolle einwirkende Bremswirkung hinsichtlich Zeit und Kraft vom Schwenkhebel und den dort einwirkenden Kräften zu trennen.The invention is based on the object of separating the braking effect acting on the roller carrier or the braking roller firmly connected to it in terms of time and force from the pivoting lever and the forces acting there.

Erfindungsgemäß wird die genannte Aufgabe bei einer gattungsgemäßen Abwickelvorrichtung gelöst, die die Merkmale des Anspruchs 1 aufweist.According to the invention, the stated object is achieved with a generic unwinding device which has the features of claim 1.

Dadurch, dass der Pendelhebel zweiarmig ausgebildet ist und ein Nocken an einem anderen Arm als die Umlenkrolle angeordnet ist, kann der am zweiten der Umlenkrolle abgewandten Arm des Schwenkhebels angeordnete Nocken die Schwinge entgegen der auf diese wirkende Federkraft zum Lösen der Bremswirkung schwenkend anheben, wenn auf den die Umlenkrolle für das Etikettenband an seinem freien Ende tragenden Arm des Schwenkhebels die Abzugkraft des Etikettenbandes (bewirkt durch eine an diesem angreifende Abzugsvorrichtung) einwirkt.Due to the fact that the pendulum lever has two arms and a cam is arranged on an arm other than the deflection roller, the cam arranged on the second arm of the pivoted lever facing away from the deflection roller can lift the rocker in a pivoting manner against the spring force acting on it to release the braking effect when the deflection roller for the label tape at its free end bearing arm of the pivoted lever the pull-off force of the label tape (caused by a pull-off device acting on this) acts.

Die Kraft der Federn, welche am Pendelhebel angreifen und diesen Vorspannen, wird so nicht zum unmittelbaren Betätigen der Bremse verwendet. Bremszeitpunkt und Bremskraft sind unabhängig voneinander einstellbar, so dass beim Bedrucken oder Etikettieren von unterschiedlich breiten Etiketten lediglich die benötigte geringere bzw. höhere Bremskraft eingestellt werden muss.The force of the springs, which act on the pendulum lever and preload it, is not used to directly apply the brake. Braking time and braking force can be adjusted independently of each other, so that when printing or labeling labels of different widths, only the required lower or higher braking force needs to be set.

Durch die erfindungsgemäße Ausgestaltung einer Abwickelvorrichtung mit einer vom Schwenkhebel separaten, wenn auch mit diesem verbundenen, unter der auf sie wirkenden elastischen Kraft eine Bremsung bewirkenden Schwinge wird folgendes erreicht: Bei auf den Schwenkhebel durch den Zug des Etikettenbandes ausgeübte "Schwenkkräfte" wird die Schwinge in eine Freigabeposition, in der keine Bremsung erfolgt, aktiv bewegt, während bei Stillstand des Bandes der insofern elastisch beaufschlagte Schwenkhebel in eine Position gebracht wird, in der er die Schwinge über den Nocken mitnimmt und in der über andere als am Schwenkhebel wirksame Kräfte die Schwinge so eine Bremsung bewirkt. Hierzu können separate, beispielsweise aktiv wirkende Komponenten vorgesehen sein.The configuration according to the invention of an unwinding device with a rocker arm that is separate from the pivoting lever, although connected to it and causes braking under the elastic force acting on it, achieves the following: When "pivoting forces" are exerted on the pivoting lever by the tension of the label strip, the rocker arm is a release position in which there is no braking, while when the belt is at a standstill the swivel lever, which is elastically loaded in this respect, is brought into a position in which it takes the rocker with it via the cam and in which the rocker is moved by forces other than those acting on the swivel lever causes braking. For this purpose, separate, for example actively acting components can be provided.

Eine bevorzugte Weiterbildung sieht vor, dass der Pendelhebel bei Krafteinwirkung auf sein die Umlenkrolle tragendes freies Ende entgegen der auf ihn wirkenden elastischen Spannung verschwenkbar ist.A preferred development provides that the pendulum lever can be pivoted against the elastic tension acting on it when force is applied to its free end carrying the deflection roller.

Bevorzugt werden die die Bremsung durch die Schwinge verursachenden Kraftgeber durch separate Federn bewirkt. Durch diese vorgespannte, an der Schwinge angreifende und durch eine Exzenter-Nocken-Verbindung zwischen Pendelhebel und der die Bremsung bewirkenden Schwinge wird der Vorteil erreicht, dass die durch die Schwinge auf den Rollenträger und damit die Etikettenbandrolle ausgeübte Kraft nicht mehr durch den Pendelhebel vorspannende Federn bewirkt werden muss, sondern durch die erfindungsgemäß vorgesehenen separaten der Schwinge zugeordneten Federn bewirkt wird, so dass die auf den Pendelhebel wirkende Vorspannung und die Bremsspannung der Schwinge unabhängig voneinander gewählt oder eingestellt werden können.The force transmitters causing the braking by the rocker are preferably effected by separate springs. This prestressed, acting on the rocker and an eccentric cam connection between the rocker arm and the rocker causing the braking, has the advantage that the force exerted by the rocker on the roll carrier and thus the label tape roll is no longer caused by the springs pretensioning the rocker arm must be effected, but is effected by the inventively provided separate springs associated with the rocker, so that the bias acting on the pendulum lever and the braking tension of the rocker can be selected or adjusted independently of one another.

Eine bevorzugte Weiterbildung der erfindungsgemäßen Vorrichtung sieht vor, dass der Pendelhebel bei Krafteinwirkung auf sein die Umlenkrolle tragendes freies Ende entgegen der auf ihn wirkenden elastischen Spannung verschwenkbar ist.A preferred development of the device according to the invention provides that the pendulum lever can be pivoted against the elastic tension acting on it when force is applied to its free end carrying the deflection roller.

Die Übertragung der das Bremsen bewirkenden Schwingenbewegung unter Einfluss der an dieser angreifenden Federn wird in an sich bekannter Weise durch ein an der Schwinge befestigtes um einen Ansatz des Rollenträgers geführtes Bremsband erreicht.The transmission of the swinging arm movement causing the braking under the influence of the springs acting on it is achieved in a manner known per se by a brake band attached to the swinging arm and guided around an attachment of the roller carrier.

In weiterer bevorzugter Ausgestaltung ist vorgesehen, dass der Nocken in eine Ausnehmung der Schwinge eingreift, wobei die Ausnehmung der Schwinge ein Langloch, insbesondere ein ovales Langloch ist. Hierdurch können die einerseits Nocken, andererseits Langloch-Ausnehmung, tragenden Enden von Schwenkhebel bzw. Schwingen über die Schwenkbewegung beider eine relative radiale Bewegung ausführen, so dass es zu keiner Blockade kommt.In another preferred embodiment, it is provided that the cam engages in a recess in the rocker, the recess in the rocker being an elongated hole, in particular an oval elongated hole. As a result, the ends of the pivoting lever or rockers, which carry cams on the one hand and the elongated hole recess on the other hand, can perform a relative radial movement via the pivoting movement of both, so that there is no blockage.

Die einerseits auf den Schwenkhebel, andererseits auf die Schwinge, einwirkenden elastischen Spannungen oder Kräfte werden in bevorzugter Weise dadurch erzeugt, dass die auf Schwenkhebel und/oder Schwinge ausgeübte Spannung jeweils durch mindestens eine Feder, insbesondere durch jeweils mindestens eine Schraubenfeder, bewirkt wird.The elastic tensions or forces acting on the one hand on the pivoting lever and on the other hand on the rocker are preferably generated in that the tension exerted on the pivoting lever and/or rocker is brought about by at least one spring, in particular by at least one helical spring.

In bevorzugter Ausgestaltung ist vorgesehen, dass der Nocken angular um die Achse des Schwenkhebels verstellbar ist. Hierdurch kann der Bremszeitpunkt eingestellt werden. Weiterhin ist vorgesehen, dass die an der Schwinge angreifende elastische Kraft veränderbar ist, insbesondere durch Änderung der Federkraft und/oder Anzahl der die auf die Schwinge wirkende elastische Kraft bewirkenden Federn.In a preferred embodiment, it is provided that the cam can be adjusted angularly around the axis of the pivoting lever. This allows the braking time to be adjusted. Furthermore, it is provided that the elastic force acting on the rocker can be changed, in particular by changing the spring force and/or the number of springs causing the elastic force acting on the rocker.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den Ansprüchen und aus der nachfolgenden Beschreibung, in der ein Ausführungsbeispiel der Erfindung unter Bezugnahme auf die Zeichnung im Einzelnen erläutert ist. Dabei zeigt:

Fig. 1
eine schematische Vorderansicht einer Abwickelvorrichtung;
Fig. 2
die Rückseite einer bevorzugten Ausgestaltung der erfindungsgemäßen Abwickelvorrichtung;
Fig. 3
eine Rückseitendarstellung mit entfernter Schwinge und Bandbremse zur Wiedergabe der Ebene hinter dieser mit Lagerung und Spannungsbeaufschlagung des Pendelhebels;
Fig. 4
eine vergrößerte Ausschnittdarstellung der Rückansicht der Fig. 2 mit Schwinge und Bandbremse;
Fig. 5
eine separate perspektivische Darstellung der eigentlichen Bremsvorrichtung mit Schwinge, Bremsband und die Schwinge beaufschlagenden Federn; und
Further advantages and features of the invention result from the claims and from the following description, in which an exemplary embodiment of the invention is explained in detail with reference to the drawing. It shows:
1
a schematic front view of an unwinding device;
2
the back of a preferred embodiment of the unwinding device according to the invention;
3
a rear view with removed rocker and band brake to play the level behind this with storage and tension of the pendulum lever;
4
an enlarged detail view of the rear view of the 2 with swing arm and band brake;
figure 5
a separate perspective view of the actual braking device with rocker, brake band and springs acting on the rocker; and

Fig. 1 zeigt die wesentlichen Elemente einer Abwickelvorrichtung 1 für ein Etikettenband. Die Abwickelvorrichtung weist einen drehbar gelagerten Rollenträger 2 sowie einen einseitig mit diesem fest verbundenen Teller 3 mit kreisförmiger Außenkontur auf. Dieser wirkt als Anlagefläche für eine Etikettenrolle R, die durch ein auf einem Rollenkern K spiralig aufgewickeltes Etikettenband B gebildet ist. Der Rollenkern K ist mit dem Rollenträger 2 drehfest verspannbar und im Betriebszustand drehfest verspannt. Das Etikettenband B besteht aus einem Trägerband, auf dem mit geringfügigem Abstand zueinander Etiketten aufgeklebt sind. 1 shows the essential elements of an unwinding device 1 for a label strip. The unwinding device has a rotatably mounted roll carrier 2 and a plate 3 with a circular outer contour that is firmly connected to it on one side. This acts as a contact surface for a label roll R, which is formed by a label strip B spirally wound onto a roll core K. The roller core K can be clamped in a rotationally fixed manner with the roller carrier 2 and is clamped in a rotationally fixed manner in the operating state. The label strip B consists of a carrier strip on which labels are glued at a slight distance from one another.

Die Abwickelvorrichtung 1 weist ferner eine erste, ortsfest, aber drehbar gelagerte Umlenkrolle 4 sowie einen elastisch vorgespannten Pendelhebel 5 auf, an dessen einem, in der Fig. 1 sichtbaren Ende 5.1 eines Arms 5.2 eine weitere Umlenkrolle 6 drehbar gelagert ist.The unwinding device 1 also has a first, stationary but rotatably mounted deflection roller 4 and an elastically prestressed pendulum lever 5, on one of which, in the 1 Visible end 5.1 of an arm 5.2 another deflection roller 6 is rotatably mounted.

Die Abwickelvorrichtung 1 ist Teil einer Etikettiermaschine oder eines Etikettendruckers, der - nicht dargestellt - weitere Führungs- oder Umlenkrollen, eine motorisch angetriebene Abzugsvorrichtung, mittels derer das Band B von der Rolle R abgezogen wird, eine Etikettenspendeeinrichtung zum Übergeben der auf dem Band befindlichen Etiketten auf ein zu etikettierendes Produkt aufweist sowie gegebenenfalls einen Etikettendrucker zum Bedrucken der Etiketten aufweisen kann.The unwinding device 1 is part of a labeling machine or a label printer which--not shown--further guide or deflection rollers, a motor-driven withdrawal device, by means of which the tape B is withdrawn from the roll R, a label dispensing device for transferring the labels located on the belt to a product to be labeled and optionally can have a label printer for printing the labels.

Im dargestellten Ausführungsbeispiel der Fig. 1 befindet sich der Pendelhebel 5 in einer Stellung, bei welcher auf diesen durch das Band B bzw. die auf dieses wirkende Abzugskraft keine Kräfte ausgeübt werden, also beispielsweise im Stillstand der Vorrichtung, wobei sie auf den Pendelhebel 5 sowie elastischen Vorspannung einwirkt (die im Weiteren noch näher erläutert wird).In the illustrated embodiment 1 the pendulum lever 5 is in a position in which no forces are exerted on it by the band B or the pull-off force acting on it, i.e. for example when the device is at a standstill, whereby it acts on the pendulum lever 5 and elastic pretension (which is described below will be explained in more detail).

Die doppelte Länge zwischen Umlenkrolle 4 und Umlenkrolle 6 in der dargestellten entlasteten Position des Schwenkarms 5 wird als - maximaler - Etikettenspeicher bezeichnet.The double length between the deflection roller 4 and deflection roller 6 in the illustrated unloaded position of the swivel arm 5 is called the—maximum—label storage.

Wird das Etikettenband B durch die nicht gezeigte motorische Abzugs- oder Fördereinrichtung gefördert und damit die Rolle R abgewickelt, so wirkt auf den elastisch gelagerten Pendelhebel 5 eine Abzugskraft des Bandes, welche diesen Pendelhebel 5 gegen die auf die ihn wirkenden elastischen Spannungen oder Kräfte aus der in Fig. 1 dargestellten Position nach unten bewegt, je nach einwirkender Abzugskraft bis maximal auf die Höhe der festgelagerten Umlenkrolle 4, wodurch das Speichervermögen des Etikettenspeichers E bzw. dieser selbst damit auf Null reduziert ist.If the strip of labels B is conveyed by the motorized pull-off or conveying device (not shown) and the roll R is thus unwound, a pull-off force of the strip acts on the elastically mounted pendulum lever 5, which pulls this pendulum lever 5 against the elastic stresses or forces from the in 1 shown position moves down, depending on the pull-off force acting up to a maximum of the height of the fixed deflection roller 4, whereby the storage capacity of the label memory E or this itself is reduced to zero.

Bei einer Etikettiermaschine oder einem Etikettendrucker wird eine Abzugskraft intermittierend ausgeübt und während der Übergabe der Etiketten und gegebenenfalls auch dem Bedrucken derselben findet sich das Band am Druck- bzw. Übergabeort im Stillstand. Bei einer freidrehend gelagerten Rolle R bzw. einem entsprechend frei drehbar gelagerten Rollenträger 2 kann die Rolle R aufgrund der durch ihre Masse bedingten Trägheit beim Stillstand weiter abrollen, so dass die Gefahr besteht, dass beim Abrollen über die Maximalgröße des Etikettenspeichers E hinaus das Band zwischen Rolle R und Abzugsstelle nicht mehr unter Spannung steht, sondern vielmehr locker gehalten ist und in Kurven oder Schlaufen verlaufen kann. Bei erneutem Abzug durch die Abzugsvorrichtung besteht dann die Gefahr, dass das Band zerrissen wird.In a labeling machine or a label printer, a peeling force is exerted intermittently and while the labels are being transferred and possibly also being printed on, the tape is at a standstill at the printing or transfer location. With a freely rotating bearing The roll R or a correspondingly freely rotatably mounted roll carrier 2 can continue to roll due to the inertia caused by its mass when it is stationary, so that there is a risk that the tape between the roll R and the take-off point will spill when it rolls beyond the maximum size of the label store E is no longer under tension, but rather is kept loose and can run in curves or loops. When the tape is pulled off again by the pull-off device, there is a risk that the tape will be torn.

Aus diesem Grunde wird regemäßig eine auf den Rollenträger 2 und damit die Rolle R bei Nachlassen der auf den Pendelhebel 5 wirkenden Bandspannung eine mit diesem verbundene automatisch wirkende Bremsvorrichtung vorgesehen.For this reason, an automatically acting braking device connected to the latter is regularly provided on the roller carrier 2 and thus the roller R when the belt tension acting on the pendulum lever 5 decreases.

Die bevorzugte erfindungsgemäße Ausgestaltung einer solchen Bremsvorrichtung wird im Weiteren beschrieben.The preferred embodiment according to the invention of such a braking device is described below.

Die Fig. 2 zeigt die Rückseite der Abwickelvorrichtung 1 und zunächst wiederum den Teller 3 und den Pendelhebel 5 mit der Umlenkrolle 6 am freien Ende 5.1 eines ersten Hebelarms 5.2 des Pendelhebels 5. Die Vorrichtung 1 weist ein Gehäuse 7 auf, an dem alle weiteren Teile direkt oder indirekt, schwenk- bzw. drehbar befestigt sind, so der Teller 3 und mit ihm der Rollenträger 2 um eine zentrale Schwenkachse A1. Der Rollenträger 2 hat auf der in der Fig. 2 dargestellten Rückseite des Tellers 3 einen Ansatz 2.1 mit ebenfalls einer kreisförmigen Außenkontur. Die weiteren auch in der Fig. 2 dargestellten Teile der erfindungsgemäßen Abwickelvorrichtung 1 werden im Folgenden näher unter Bezug auf die Fig. 3 bis Fig. 5 erläutert.the 2 shows the back of the unwinding device 1 and first of all the plate 3 and the pendulum lever 5 with the deflection roller 6 at the free end 5.1 of a first lever arm 5.2 of the pendulum lever 5. The device 1 has a housing 7 on which all other parts are directly or indirectly are pivotally or rotatably mounted, so the plate 3 and with it the roller carrier 2 about a central pivot axis A1. The role carrier 2 has on in the 2 illustrated back of the plate 3 an approach 2.1 also with a circular outer contour. The others also in the 2 illustrated parts of the unwinding device 1 according to the invention are described in more detail below with reference to FIG Figures 3 to 5 explained.

Die Fig. 3 zeigt in gegenüber der Fig. 2 vergrößerter Darstellung die von Rückseite aus gesehen hinter den in der Fig. 2 sichtbaren Elementen in einer tieferen Ebene befindlichen weiteren Elemente, so insbesondere den Pendelhebel 5, der um eine Schwenkachse A2 gelagert ist. Der Pendelhebel 5 ist zweiarmig ausgebildet mit dem schon unter Bezug auf die Fig. 1 erwähnten Hebelarm 5.2 und einem relativ zur Drehachse A2 diametral gegenüberliegenden Schwenkhebel 5.3. Am Schwenkhebel 5.3 ist exzentrisch zur Schwenkachse A2 ein Exzenter-Nocken 5.4 am Hebelarm 5.3 vorgesehen. Der Nocken 5.4 ist zur Einstellung des Bremszeitpunkts um die Achse A2 mit seiner Mittelachse angular verstellbar, beispielsweise aus einer Position A4 in eine Position A4' - wie in Fig. 3 dargestellt.the 3 shows in opposite of 2 enlarged representation seen from the back behind the in the 2 visible elements located in a lower level further elements, in particular the pendulum lever 5, which is mounted about a pivot axis A2. The pendulum lever 5 is formed with two arms with the reference to the 1 mentioned lever arm 5.2 and relative to the axis of rotation A2 diametrically opposite pivot lever 5.3. An eccentric cam 5.4 is provided on the lever arm 5.3 on the pivoting lever 5.3 eccentrically to the pivoting axis A2. The cam 5.4 can be angularly adjusted about the axis A2 with its central axis for setting the braking time, for example from a position A4 to a position A4' - as in 3 shown.

Weiterhin greifen am Hebelarm 5.3 des Schwenkhebels 5 - im dargestellten Ausführungsbeispiel - zwei erste Schraubenfedern 8 an, die an einem unteren Querträger 7.1 des Gehäuses 7 befestigt sind. Die ersten Federn 8 ziehen ersichtlich den Schwenkhebel 5 in die in den Fig. 1 bis Fig. 3 dargestellte Position, bei der der Hebelarm 5.2 nach oben und der Hebelarm 5.3 unter Einwirkung der Federn 8 nach unten gezogen ist. Damit befindet sich auch der Nocken 5.4 in einer unteren Position - gegenüber einer Position, bei der der Schwenkhebel 5 bzw. der Hebelarm 5.2 unter einer Abzugskraft des Bandes B nach unten gezogen ist, wodurch der Hebelarm 5.3 und damit der Nocken 5.4 entgegen der Wirkung der Federn 8 nach oben geschwenkt wird.Furthermore, attack on the lever arm 5.3 of the pivoting lever 5 - in the illustrated embodiment - two first coil springs 8, which are attached to a lower cross member of the housing 7 7.1. The first springs 8 can be seen pulling the pivot lever 5 into the Figures 1 to 3 position shown, in which the lever arm 5.2 is pulled up and the lever arm 5.3 under the action of the springs 8 down. This means that the cam 5.4 is also in a lower position - compared to a position in which the pivoted lever 5 or the lever arm 5.2 is pulled downwards under a pulling force of the belt B, whereby the lever arm 5.3 and thus the cam 5.4 counteract the effect of the Springs 8 is pivoted upwards.

Die Fig.4 zeigt eine in der dort dargestellten Rückseitenansicht vorderen Ebene gegenüber der Fig. 3 befindliche Schwinge 10, die um eine Schwenkachse A3 schwenkbar gelagert ist. Die Schwinge 10 weist im Bereich eines freien Endes 10.1 ein Langloch auf, in welches der Nocken 5.4 des Pendelhebels 5 eingreift. Ebenfalls im Bereich ihres freien Endes 10.1 greifen an der Schwinge 10 - bei der dargestellten Ausführungsform - drei zweite Schraubenfedern 11 an, die an ihrem unteren Ende wiederum am Gestell 7 und zwar an einem Querträger 7.2 befestigt sind.the Fig.4 shows a front plane in the rear view shown there compared to that 3 located rocker 10, which is pivotally mounted about a pivot axis A3. The rocker 10 points in the area of a free end 10.1 a slot into which the cam 5.4 of the pendulum lever 5 engages. Also in the area of its free end 10.1, three second helical springs 11 act on the rocker 10--in the illustrated embodiment--which in turn are fastened at their lower end to the frame 7, specifically to a cross member 7.2.

Die Schwinge 10 hält zwischen ihrer Drehachse A3 und ihrem Endbereich 10.1 mit Langloch 10.2 und Angreifort der zweiten Federn 10 ein Bremsband 12, welches um den Ansatz 2.1 des Rollenträgers herumgeführt ist. Die Bremsvorrichtung 9 (der Fig. 4) ist in der Fig.5 noch einmal zur Verdeutlichung als solche, gelöst von weiteren Teilen der Abwickelvorrichtung perspektivisch dargestellt. Zur Erläuterung wird auf die vorstehende Beschreibung verwiesen.Between its axis of rotation A3 and its end region 10.1 with the slot 10.2 and the point of attack of the second springs 10, the rocker 10 holds a brake band 12, which is guided around the attachment 2.1 of the roller carrier. The braking device 9 (der 4 ) is in the Fig.5 once again for clarification as such, shown in perspective detached from other parts of the unwinding device. For explanation, reference is made to the above description.

Befindet sich der Pendelhebel 5 in seiner in den Fig. 1 bis Fig. 3 dargestellten durch die elastische Spannung der ersten Federn 8 bewirkten oberen Stellung des ersten Hebelarms 5.2, wenn durch das Etikettenband B keine Abzugskraft aus ihm ausgeübt wird, so befindet sich sein zweiter Hebelarm 5.3 und damit der Nocken 5.4 in der in der Fig. 3 dargestellten unteren Stellung und demgemäß auch das freie Ende 10.1 der Schwinge 10 in einer durch die Spannung der zweiten Federn 11 bewirkten unteren Stellung. Damit wird das an der Schwinge 10 befestigte Bremsband 12 gegen den Ansatz 2.1 des Rollenträgers 2 gezogen und somit auf diesen und die drehfest auf ihm aufsitzende Etikettenbandrolle R eine Bremswirkung ausgeübt, so dass diese in Stillstand gebracht und gehalten wird, auch entgegen einer nachlaufenden Drehbewegung aufgrund der Trägheit der Rolle R, wenn vorher ein Bandabzug erfolgt ist.Is the pendulum lever 5 in its in the Figures 1 to 3 shown by the elastic tension of the first springs 8 effected upper position of the first lever arm 5.2, if no withdrawal force is exerted from it by the label strip B, then its second lever arm 5.3 and thus the cam 5.4 is in the in the 3 shown lower position and accordingly also the free end 10.1 of the rocker 10 in a caused by the tension of the second springs 11 lower position. The brake band 12 attached to the rocker 10 is thus pulled against the extension 2.1 of the roll carrier 2 and a braking effect is thus exerted on this and the label tape roll R sitting non-rotatably on it, so that it is brought to a standstill and held, also against a subsequent rotary movement due to the inertia of the roller R, if a tape withdrawal has previously taken place.

Wird nun eine Zugkraft auf das Etikettenband B - durch die nicht dargestellte Abzugsvorrichtung - ausgeübt, so wird der freie Arm 5.2 des Pendelhebels 5 durch diese Zugkraft nach unten bewegt. Der zweite Hebelarm 5.3 des Pendelhebels 5 hebt sich nach oben entgegen der auf diesen wirkenden Spannung der ersten Federn 8 und damit bewegt sich auch der Nocken 5.4 nach oben, der in das Langloch 10.2 der Schwinge 10 eingreift; dieser hebt derart entgegen der auf die Schwinge 10 einwirkenden Spannung der zweiten Federn 11 das freie Ende 10.1 der Schwinge 10 in einer Schwenkbewegung um die Schwenkachse A3 nach oben, wodurch das Bremsband 12 vom Ansatz 2.1 des Rollenträgers 2 gelöst wird und damit sich die Etikettenbandrolle R unter der am Band B angreifenden Abzugskraft sich frei drehen und Bandlänge abgeben kann.If a tensile force is now applied to the label strip B--by the triggering device, not shown--the free arm 5.2 of the pendulum lever 5 is moved downwards by this tensile force. The second lever arm 5.3 of the pendulum lever 5 lifts upwards against the tension of the first springs 8 acting on it and thus the cam 5.4 also moves upwards, which engages in the slot 10.2 of the rocker 10; counter to the tension of the second springs 11 acting on the rocker 10, this lifts the free end 10.1 of the rocker 10 upwards in a pivoting movement about the pivot axis A3, as a result of which the brake band 12 is released from the shoulder 2.1 of the roll carrier 2 and the label tape roll R can rotate freely under the pull-off force acting on the band B and release the length of the band.

Fällt bei Stillstand der Abzugsbewegung die Abzugskraft auf den Schwenkhebel 5 wieder fort, so wird in der im vorletzten Absatz beschriebenen Weise wieder die Bremswirkung auf die Etikettenbandrolle R ausgeübt, so dass diese nicht unter ihrer Trägheit nachlaufen kann und das Etikettenband B weiterhin unter der - auch durch den Pendelhebel 5 - bewirkte Spannung straff gespannt bleibt.If the pull-off force on the pivoted lever 5 ceases when the pull-off movement has come to a standstill, the braking effect is again exerted on the label tape roll R in the manner described in the penultimate paragraph, so that it cannot continue to run under its inertia and the label tape B can continue to run under the - also by the pendulum lever 5 - the tension caused remains taut.

Claims (11)

  1. Unwinding device for a strip, such as a label strip, comprising a roll carrier (2), a pivotably mounted, elastically loaded pendulum lever (5) which carries a deflection roller (6) at a free end (5.1), a braking device (9) for the roll carrier (2), and a pivotably mounted, elastically loaded rocker (10),
    characterized in that,
    the pendulum lever (5) has two arms,
    a cam (5.4) is arranged eccentrically on a different arm of the pendulum lever (5) to the deflection roller (6),
    the rocker (10) can be pivoted about the cam (5.4), and
    the rocker (10) can be pivoted under an elastic force acting thereon in such a way that said rocker brakes the roll carrier (2).
  2. Device according to claim 1, characterized in that the rocker (10) can be pivoted by the cam (5.4) of the pendulum lever (5) counter to the elastic force acting thereon.
  3. Device according to either of the preceding claims, characterized in that the pendulum lever (5) can be pivoted counter to the elastic tension acting thereon when force is applied to the free end (5.1) thereof carrying the deflection roller (6).
  4. Device according to any of the preceding claims, characterized in that a braking effect can be exerted on the roll carrier (2) by the elastic tension acting on the rocker (10).
  5. Device according to any of the preceding claims, characterized in that a release of the roll carrier (2) or a release of the braking effect acting thereon is effected by pivoting the rocker (10), due to the movement of the cam (5.4) of the pendulum lever (5) counter to the elastic tension acting on the rocker (10).
  6. Device according to any of the preceding claims, characterized by a brake band (12) which is fastened to the rocker (10) and guided around an attachment (2.1) of the roll carrier (2).
  7. Device according to any of the preceding claims, characterized in that the cam (5.4) engages in a recess (10.2) in the rocker (10).
  8. Device according to claim 7, characterized in that the recess (10.2) in the rocker (10) is a slot, in particular an oval slot.
  9. Device according to any of the preceding claims, characterized in that the tension exerted on the pivot lever (5) and/or rocker (10) is effected in each case by at least one spring, in particular by at least one helical spring (8; 11).
  10. Device according to any of the preceding claims, characterized in that the cam (5.4) can be angularly adjusted about the axis (A2) of the pivot lever (5).
  11. Device according to any of the preceding claims, characterized in that the elastic force acting on the rocker (10) can be changed, in particular by changing the spring force and/or the number of springs effecting the elastic force acting on the rocker (10).
EP17000946.8A 2016-06-06 2017-06-02 Unwinder for a tape, such as label tape Active EP3255001B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016006747.0A DE102016006747A1 (en) 2016-06-06 2016-06-06 Unwinding device for a tape, such as label tape

Publications (2)

Publication Number Publication Date
EP3255001A1 EP3255001A1 (en) 2017-12-13
EP3255001B1 true EP3255001B1 (en) 2022-07-20

Family

ID=59014424

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17000946.8A Active EP3255001B1 (en) 2016-06-06 2017-06-02 Unwinder for a tape, such as label tape

Country Status (2)

Country Link
EP (1) EP3255001B1 (en)
DE (1) DE102016006747A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019214964B4 (en) * 2019-09-30 2024-05-16 Multivac Sepp Haggenmüller Se & Co. Kg Film take-up device and method for unwinding a film roll

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE538276A (en) * 1954-09-06
US3083602A (en) * 1961-01-13 1963-04-02 West Virginia Pulp & Paper Co Precise web metering device
CH624911A5 (en) * 1978-01-27 1981-08-31 Sodeco Compteurs De Geneve Unreeling device for a material strip wound on a supply roll
GB2345692A (en) * 1999-01-16 2000-07-19 Thorn Secure Science Ltd Apparatus to maintain the tension of an elongate flexible feedstock includes a moveable roller linked to a brake
DE202006005557U1 (en) 2006-03-30 2007-08-09 Herma Gmbh Label strip unwinding device, has brake wheel embraced by braking band, where band tension of braking band and braking torque acting on brake wheel are controlled from position of pendulum arm
CN102372104A (en) * 2010-08-26 2012-03-14 天津北科精工自动化科技发展有限责任公司 Cam-controlled friction type constant tension mechanism

Also Published As

Publication number Publication date
EP3255001A1 (en) 2017-12-13
DE102016006747A1 (en) 2017-12-07

Similar Documents

Publication Publication Date Title
EP2794036B1 (en) Restraint device, in particular for training purposes
WO2012045381A1 (en) Apparatus for feeding wire to wire processing machines
EP1960298B1 (en) Device for maintaining a constant tension on a web material
DE2509379A1 (en) LABELING MACHINE
EP3255001B1 (en) Unwinder for a tape, such as label tape
DE3933453A1 (en) BELT REEL
CH459048A (en) Automatic labeling machine
EP0049376B1 (en) Roll carrier
EP1378473B1 (en) Sheet transport device with adjustable upper grippers for pockets
EP4129876A1 (en) Roll holder for a label roll and label printer
DE1424489B2 (en) Braking device for tensioning a tape-shaped recording medium withdrawn from a supply reel in a tape transport device
CH695692A5 (en) Winding device for producing a lap roll.
DE102010041057B4 (en) Brake conveyor roller with Hemmregler
DE1035231B (en) Tape tension control device for a machine for winding electrical cables
EP1119510A1 (en) Winding device for flexible, flat material, especially printed products
DE69111517T2 (en) Cutting device for a web winder.
DE1142369B (en) Automatic compensation device for printing units with a single, rotatable type carrier on typewriters and similar machines
DE2502213A1 (en) DEVICE FOR MECHANICAL PULLING OF CABLES
DE4206167C2 (en) Device for controlling the supply of packaging on a candy packaging machine
DE2650445A1 (en) SAFETY SKI BINDING
EP3216730B1 (en) Device for unwinding or winding a sheet of material from or on a winding core
DE2048142C (en) Dispenser for tape material wound on a reel
CH639145A5 (en) DEVICE ON A LABEL MACHINE TO IMPORT AND excavating the NOTES TREE AND OBSERVED AND GLEICHFOERMIGEN pressing the PRESS ROLLER.
DE1072668B (en) Mechanical braking and compensation system on a winding device
CH229560A (en) Machine for tying boxes or stacked objects of all kinds.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180612

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20201201

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20220331

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502017013477

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1505430

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220815

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20220720

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221121

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221020

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221120

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221021

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502017013477

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230516

26N No opposition filed

Effective date: 20230421

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230421

Year of fee payment: 7

Ref country code: DE

Payment date: 20230629

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20230616

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20230727

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20230630

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20230602

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230602

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230602

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230602

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230602

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230602

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230630