EP3255001A1 - Unwinder for a tape, such as label tape - Google Patents
Unwinder for a tape, such as label tape Download PDFInfo
- Publication number
- EP3255001A1 EP3255001A1 EP17000946.8A EP17000946A EP3255001A1 EP 3255001 A1 EP3255001 A1 EP 3255001A1 EP 17000946 A EP17000946 A EP 17000946A EP 3255001 A1 EP3255001 A1 EP 3255001A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rocker
- acting
- lever
- cam
- tape
- 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
Links
- 230000033001 locomotion Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 8
- 239000000969 carrier Substances 0.000 abstract 1
- 230000001133 acceleration Effects 0.000 description 3
- 238000002372 labelling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Images
Classifications
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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 a unwinding device for a tape, such as a label tape, with a roller carrier, a pivotally mounted, elastically acted pendulum lever, which carries a guide roller at a free end, and with a braking device for the roller carrier, and with a pivotally mounted, elastically acted upon swingarm.
- Such unwinding devices are used on label printers, labellers and labellers.
- a carrier tape is pulled during unwinding via a first pendulum arm of a pivotally mounted, elastically preloaded pendulum lever (also called dancer arm).
- the pendulum lever generates a loop of tape, which is referred to as label memory.
- the label memory can be increased by the formation of further formed by guiding the band of partially also pivotally mounted pulleys formed loops.
- Label rolls usually consist of a roll core and the spiral wound on it carrier tape on which in turn labels are. The roll core is firmly clamped with a roller carrier of the unwinding device.
- a label memory is needed to decouple the sluggish label roll from the actual operation, such as printing or donations.
- the acceleration of the label roll from standstill and into standstill can take place much more slowly than the acceleration ramps of a printing or dispensing process require.
- the spring-loaded pendulum arm avoids jerky acceleration of the label roll.
- band brakes are used in such unwinding devices.
- the operation of this band brake is usually via an eccentric, which is in constant contact with the rocker of the band brake. There is a direct dependence on braking time and braking force.
- a brake wheel with the label roll rotatably connected and partially wrapped by a brake band the belt tension and thus the braking torque acting on the brake wheel is controlled by the position of the pendulum in such a way that the pendulum arm acts on a rocker arm via an eccentrically arranged control disc in that, under the tensile force of the springs acting on the pendulum arm, it pulls the brake band against the brake wheel against a spring acting on the rocker, the latter releasing the brake band when the band is applied to the pendulum arm by pulling. Therefore, acting on the rocker spring is used to release the brake band of the brake disc, while the force exerted on the brake disc via rocker and brake band force is effected directly by the springs acting on the pendulum.
- the object of the invention is not to use the force of the springs, which act on the pendulum lever, and these preloads, not for immediate actuation of the brake. Furthermore, the braking time and the braking force should be adjusted independently of each other, to print or label different width labels only the required to set lower or higher braking force.
- said object is achieved in a generic unwinding device characterized in that the rocker is pivotally pivotable under the elastic force acting on it, the roller carrier.
- the pendulum lever is pivotable against the elastic force acting on it when it acts on its free end bearing the deflection roller.
- the braking force caused by the rocker force transmitter caused by separate springs.
- the advantage is achieved that the force exerted by the rocker on the roller carrier and thus the label tape roll force is no longer biased by the pendulum lever springs must be effected, but is effected by the inventively provided separate associated with the rocker springs, so that the force acting on the pendulum lever bias and the brake voltage the swingarm can be selected or adjusted independently of each other.
- an eccentrically arranged on the pendulum lever cam over which the rocker is pivotable provided.
- a further embodiment provides that the rocker is pivotable by the cam of the pendulum lever against the elastic force acting on it.
- 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 the force acting on its free end carrying the deflection roller.
- the device according to the invention is characterized in that a braking effect on the roller carrier can be exercised by the elastic tension acting on the rocker. Also provides a preferred development beyond that by pivoting the Rocker due to the movement of the cam of the pendulum lever against the elastic force acting on the rocker release of the roller carrier or a release of the braking effect acting on it is effected.
- a preferred embodiment provides that the pivot lever is formed with two arms and the cam is arranged on another arm than the deflection roller.
- the arranged on the second of the pulley arm of the pivot lever arranged cam pivot the rocker against the spring force acting on this to release the braking effect, if on the pulley for the label tape at its free end bearing arm of the pivot lever, the withdrawal force of the label tape (causes by acting on this triggering device) acts.
- the cam engages in a recess of the rocker, wherein the recess of the rocker is a slot, in particular an oval slot.
- the on the one hand on the pivot lever, on the other hand on the rocker, acting elastic stresses or forces are preferably generated by the fact that the pivot lever and / or rocker pressure exerted by at least one spring, in particular by at least one coil spring causes.
- the cam is angularly adjustable about the axis of the pivot lever. As a result, the braking time can be adjusted. It is further provided that the elastic force acting on the rocker is variable, in particular by changing the spring force and / or number of acting on the rocker elastic force springs.
- Fig. 1 shows the essential elements of a unwinding device 1 for a label tape.
- the unwinding device has a rotatably mounted roller carrier 2 and a plate 3 fixedly connected thereto on one side with a circular outer contour. This acts as a contact surface for a label roll R, which is formed by a wound on a roll core K spiral label tape B.
- the roller core K is rotatably clamped to the roller carrier 2 and clamped in the operating state rotationally fixed.
- the label tape B consists of a carrier tape on which labels are glued to each other at a slight distance.
- the unwinding device 1 further comprises a first, stationary, but rotatably mounted guide roller 4 and an elastically biased pendulum lever 5, at one, in the Fig. 1 visible end 5.1 of an arm 5.2, a further guide 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 removal 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 tape to a product to be labeled, and optionally may have a label printer for printing the labels.
- the pendulum lever 5 in a position in which no forces are exerted on this by the band B or acting on this trigger force, so for example at standstill of the device, wherein it acts on the pendulum lever 5 and elastic bias (hereinafter will be explained in more detail).
- the double length between the guide roller 4 and guide roller 6 in the illustrated unloaded position of the pivot arm 5 is referred to as - maximum - label memory.
- a withdrawal force is applied intermittently and during the transfer of the labels and possibly also the printing of the same is the tape at the printing or transfer point at a standstill.
- the role R due to the inertia caused by their inertia at standstill continue to roll, so that there is a risk that when rolling beyond the maximum size of the label memory E out the tape between roll R and take-off point is no longer under tension, but rather is held loose and can run in curves or loops. With another deduction by the trigger then there is a risk that the tape is torn.
- the Fig. 2 shows the back of the unwinding device 1 and first turn the plate 3 and the pendulum lever 5 with the guide 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 directly or indirectly, are pivotally or rotatably mounted, so the plate 3 and with him the roller carrier 2 about a central pivot axis A1.
- the roller carrier 2 has on in the Fig. 2 shown back of the plate 3 a neck 2.1 with also a circular outer contour.
- the others also in the Fig. 2 shown parts of the unwinding device 1 according to the invention will be described in more detail below with reference to the FIG. 3 to FIG. 5 explained.
- the Fig. 3 shows in relation to the Fig. 2 enlarged view of the seen from the rear behind in the Fig. 2 visible elements in a lower level other elements, such as the pendulum lever 5, which is mounted about a pivot axis A2.
- the pendulum lever 5 is formed with two arms already with reference to the Fig. 1 mentioned lever arm 5.2 and a relative to the axis of rotation A2 diametrically opposed pivot lever 5.3.
- the cam 5.4 is angularly adjustable to adjust the braking time about the axis A2 with its central axis, for example, from a position A4 in a position A4 '- as in Fig. 3 shown.
- first coil springs 8 engage the lever arm 5.3 of the pivot lever 5 - in the illustrated embodiment - two first coil springs 8, which are attached to a lower cross member 7.1 of the housing 7.
- the first springs 8 can be seen pulling the pivot lever 5 in the in the Fig. 1 to Fig. 3 shown position in which the lever arm 5.2 is pulled upward and the lever arm 5.3 under the action of the springs 8 down.
- the cam 5.4 is in a lower position - compared to a position in which the pivot lever 5 and the lever arm 5.2 is pulled under a withdrawal force of the belt B down, causing the lever arm 5.3 and thus the cam 5.4 against the action of Springs 8 is pivoted upwards.
- the Figure 4 shows a in the rear view shown there front plane opposite to the Fig. 3 located rocker 10 which is pivotally mounted about a pivot axis A3.
- the rocker 10 points in the region of a free end 10.1 a slot in which engages the cam 5.4 of the pendulum lever 5.
- the rocker 10 holds between its axis of rotation A3 and its end portion 10.1 with slot 10.2 and attack location of the second springs 10, a brake band 12 which is guided around the neck 2.1 of the roller carrier.
- the braking device 9 (the Fig. 4 ) is in the Figure 5 again for clarity as such, solved by other parts of the unwinding shown in perspective. For explanation, reference is made to the above description.
Landscapes
- Labeling Devices (AREA)
Abstract
Die Erfindung betrifft eine Abwickelvorrichtung für ein Band, wie ein Etikettenband, mit einem Rollenträger, einem schwenkbar gelagerten, elastisch beaufschlagten Pendelhebel, der an einem freien Ende eine Umlenkrolle trägt, und mit einer Bremsvorrichtung für den Rollenträger, und mit einer schwenkbar gelagerten, elastisch beaufschlagten Schwinge, welche dadurch gekennzeichnet ist, dass die Schwinge über unter der auf sie einwirkenden elastischen Kraft der Rollenträger brems- und verschwenkbar ist.The invention relates to a unwinding device for a tape, such as a label tape, with a roller carrier, a pivotally mounted, elastically acted pendulum lever, which carries a guide roller at a free end, and with a braking device for the roller carrier, and with a pivotally mounted, elastically acted upon Rocker, which is characterized in that the rocker is braked and swiveled under the elastic force of the roller carriers acting on it.
Description
Die Erfindung betrifft eine Abwickelvorrichtung für ein Band, wie ein Etikettenband, mit einem Rollenträger, einem schwenkbar gelagerten, elastisch beaufschlagten Pendelhebel, der an einem freien Ende eine Umlenkrolle trägt, und mit einer Bremsvorrichtung für den Rollenträger, und mit einer schwenkbar gelagerten, elastisch beaufschlagten Schwinge.The invention relates to a unwinding device for a tape, such as a label tape, with a roller carrier, a pivotally mounted, elastically acted pendulum lever, which carries a guide roller at a free end, and with a braking device for the roller carrier, and with a pivotally mounted, elastically acted upon swingarm.
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, labellers and labellers. A carrier tape is pulled during unwinding via a first pendulum arm of a pivotally mounted, elastically preloaded pendulum lever (also called dancer arm). The pendulum lever generates a loop of tape, which is referred to as label memory. The label memory can be increased by the formation of further formed by guiding the band of partially also pivotally mounted pulleys formed loops. Label rolls usually consist of a roll core and the spiral wound on it carrier tape on which in turn labels are. The roll core is firmly clamped with a roller 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 needed to decouple the sluggish label roll from the actual operation, such as printing or donations. As a result of this decoupling, the acceleration of the label roll from standstill and into standstill can take place much more slowly than the acceleration ramps of a printing or dispensing process require. The spring-loaded pendulum arm avoids 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 is to be striven for and a jerky increase in the tension in the carrier tape to avoid in order to achieve a good printing result or a good Etikettierergebnis.
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 the position of the pendulum lever controls a brake which is open at a small label memory and is closed at a filled label memory under spring force.
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.Usually band brakes are used in such unwinding devices. The operation of this band brake is usually via an eccentric, which is in constant contact with the rocker of the band brake. There is a direct dependence on 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 operating this band brake is hitherto brought from the working capacity of the spring or the springs of the pendulum lever. Thus, the working capacity of the springs of the Swing lever, depending on the load, divided into the braking process and in the movement of the pendulum lever.
Dies gilt auch für die gattungsgemäße Abwickelvorrichtung mit einer Bremse zur Abwicklung eines Etikettenbandes oder dergleichen von einer Etikettenrolle nach der
Aufgabe der Erfindung ist es, die Kraft der Federn, welche am Pendelhebel angreifen, und diesen Vorspannen, nicht zum unmittelbaren Betätigen der Bremse zu verwenden. Weiterhin sollen Bremszeitpunkt und die Bremskraft unabhängig voneinander einzustellen sein, um beim Bedrucken oder Etikettieren von unterschiedlich breiten Etiketten lediglich die benötigte geringere bzw. höhere Bremskraft einstellen zu müssen.The object of the invention is not to use the force of the springs, which act on the pendulum lever, and these preloads, not for immediate actuation of the brake. Furthermore, the braking time and the braking force should be adjusted independently of each other, to print or label different width labels only the required to set lower or higher braking force.
Erfindungsgemäß wird die genannte Aufgabe bei einer gattungsgemäßen Abwickelvorrichtung dadurch gelöst, die Schwinge unter der auf sie einwirkenden elastischen Kraft den Rollenträger bremsend verschwenkbar ist.According to the invention, said object is achieved in a generic unwinding device characterized in that the rocker is pivotally pivotable under the elastic force acting on it, the roller carrier.
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.By the inventive design of an unwinding device with a separate from the pivot lever, albeit connected to this, under the elastic force acting on it a braking effecting rocker is achieved the following: When applied to the pivot lever by the train of the label tape "swivel forces" the rocker in a release position, in which no braking is actively moved, while at rest of the band of the extent elastically acted pivot lever is brought into a position in which he takes the rocker over the cam and in the other than on the pivot lever effective forces the rocker so a braking effect. For this purpose, separate, for example active components can be provided.
In bevorzugter Ausgestaltung ist ein exzentrisch am Pendelhebel angeordneter Nocken, über den die Schwinge verschwenkbar ist, vorgesehen, wobei insbesondere die Schwinge durch den Nocken des Pendelhebels entgegen der auf sie wirkenden elastischen Kraft verschwenkbar ist. Auch sieht eine bevorzugte Weiterbildung vor, dass der Pendelhebel bei Krafteinwirkung auf sein die Umlenkrolle tragendes freies Ende entgegen der auf ihn wirkenden elastischen Spannung verschwenkbar ist.In a preferred embodiment, an eccentrically arranged on the pendulum lever cam, via which the rocker is pivotable provided, in particular, the rocker is pivotable by the cam of the pendulum lever against the elastic force acting on it. Also, a preferred development provides that the pendulum lever is pivotable against the elastic force acting on it when it acts on its free end bearing 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.Preferably, the braking force caused by the rocker force transmitter caused by separate springs. By this biased, acting on the rocker and by an eccentric cam connection between the pendulum lever and the braking effecting rocker, the advantage is achieved that the force exerted by the rocker on the roller carrier and thus the label tape roll force is no longer biased by the pendulum lever springs must be effected, but is effected by the inventively provided separate associated with the rocker springs, so that the force acting on the pendulum lever bias and the brake voltage
the swingarm can be selected or adjusted independently of each other.
In einer ersten bevorzugten Ausgestaltung der erfindungsgemäßen Vorrichtung ist ein exzentrisch am Pendelhebel angeordneter Nocken, über den die Schwinge verschwenkbar ist, vorgesehen. Eine Weiterbildung sieht vor, dass die Schwinge durch den Nocken des Pendelhebels entgegen der auf sie wirkenden elastischen Kraft verschwenkbar ist.In a first preferred embodiment of the device according to the invention, an eccentrically arranged on the pendulum lever cam over which the rocker is pivotable provided. A further embodiment provides that the rocker is pivotable by the cam of the pendulum lever against the elastic force acting on it.
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 the force acting on its free end carrying the deflection roller.
In weiterer Ausgestaltung zeichnet sich die erfindungsgemäße Vorrichtung dadurch aus, dass durch die auf die Schwinge wirkende elastische Spannung eine Bremswirkung auf den Rollenträger ausübbar ist. Auch sieht eine bevorzugte Weiterbildung darüber hinaus vor, dass durch Verschwenken der Schwinge aufgrund der Bewegung des Nockens des Pendelhebels entgegen der auf die Schwinge wirkenden elastischen Spannung eine Freigabe des Rollenträgers bzw. ein Lösen der auf diesen wirkenden Bremswirkung bewirkt wird.In a further embodiment, the device according to the invention is characterized in that a braking effect on the roller carrier can be exercised by the elastic tension acting on the rocker. Also provides a preferred development beyond that by pivoting the Rocker due to the movement of the cam of the pendulum lever against the elastic force acting on the rocker release of the roller carrier or a release of the braking effect acting on it is effected.
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 braking effecting swinging motion under the influence of the springs acting on this is achieved in a conventional manner by a fixed to the rocker to a neck of the roller carrier guided brake band.
Weiterhin sieht eine bevorzugte Ausgestaltung vor, dass der Schwenkhebel zweiarmig ausgebildet ist und der Nocken an einem anderen Arm als die Umlenkrolle angeordnet ist. Hierdurch 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.Furthermore, a preferred embodiment provides that the pivot lever is formed with two arms and the cam is arranged on another arm than the deflection roller. In this way, the arranged on the second of the pulley arm of the pivot lever arranged cam pivot the rocker against the spring force acting on this to release the braking effect, if on the pulley for the label tape at its free end bearing arm of the pivot lever, the withdrawal force of the label tape (causes by acting on this triggering device) acts.
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 a further preferred embodiment, it is provided that the cam engages in a recess of the rocker, wherein the recess of the rocker is a slot, in particular an oval slot. As a result, on the one hand cams, on the other hand slot-recess, bearing ends of pivot lever or rockers on the pivotal movement both perform a relative radial movement, 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 on the one hand on the pivot lever, on the other hand on the rocker, acting elastic stresses or forces are preferably generated by the fact that the pivot lever and / or rocker pressure exerted by at least one spring, in particular by at least one coil spring causes.
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 is angularly adjustable about the axis of the pivot lever. As a result, the braking time can be adjusted. It is further provided that the elastic force acting on the rocker is variable, in particular by changing the spring force and / or number of acting on the rocker elastic force springs.
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
- Fig. 1
- a schematic front view of an unwinding device;
- Fig. 2
- the back of a preferred embodiment of the unwinding device according to the invention;
- Fig. 3
- a rear side view with the rocker and band brake removed for the reproduction of the plane behind this with storage and voltage application of the pendulum lever;
- Fig. 4
- an enlarged detail view of the rear view of
Fig. 2 with swingarm and band brake; - Fig. 5
- a separate perspective view of the actual braking device with rocker, brake band and the rocker acting springs; and
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
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
Im dargestellten Ausführungsbeispiel der
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
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
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 withdrawal force is applied intermittently and during the transfer of the labels and possibly also the printing of the same is the tape at the printing or transfer point at a standstill. In a free-spinning stored Roll R or a corresponding freely rotatably mounted
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, a moderately acting on the
Die bevorzugte erfindungsgemäße Ausgestaltung einer solchen Bremsvorrichtung wird im Weiteren beschrieben.The preferred embodiment of such a braking device according to the invention will be described below.
Die
Die
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
Die
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
Befindet sich der Pendelhebel 5 in seiner in den
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.Now, if a tensile force on the label tape B - exerted by the trigger device, not shown - exercised, the free arm 5.2 of the
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 at the standstill of the withdrawal movement, the withdrawal force on the
Claims (13)
dadurch gekennzeichnet, dass
die Schwinge (10) unter der auf sie einwirkenden elastischen Kraft den Rollenträger (2) bremsend verschwenkbar ist.Unwinding device for a tape, such as a label tape, with a roller carrier (2), a pivotally mounted, elastically acted pendulum lever (5) which carries at a free end (5.1) a deflection roller (6), with a braking device (9) for the Roller carrier (2), and with a pivotally mounted, elastically acted rocker (10)
characterized in that
the rocker (10) under the elastic force acting on it, the roller carrier (2) is pivotally pivotable.
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 true EP3255001A1 (en) | 2017-12-13 |
EP3255001B1 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 |
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EP (1) | EP3255001B1 (en) |
DE (1) | DE102016006747A1 (en) |
Families Citing this family (1)
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 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Family Cites Families (2)
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 |
-
2016
- 2016-06-06 DE DE102016006747.0A patent/DE102016006747A1/en not_active Withdrawn
-
2017
- 2017-06-02 EP EP17000946.8A patent/EP3255001B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
---|---|
DE102016006747A1 (en) | 2017-12-07 |
EP3255001B1 (en) | 2022-07-20 |
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