EP3255001B1 - Dévidoir destiné à une bande, comme une bande d'étiquettes - Google Patents

Dévidoir destiné à une bande, comme une bande d'étiquettes Download PDF

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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)
English (en)
Other versions
EP3255001A1 (fr
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/fr
Application granted granted Critical
Publication of EP3255001B1 publication Critical patent/EP3255001B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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)

Claims (11)

  1. Dispositif de déroulement pour un ruban, tel qu'un ruban d'étiquettes, comportant un support de galets (2), un levier oscillant (5) monté pivotant et sollicité élastiquement, lequel supporte un galet de renvoi (6) au niveau d'une extrémité (5.1) libre, comportant un dispositif de freinage (9) pour le support de galets (2), comportant un bras oscillant (10) monté pivotant et sollicité élastiquement
    caractérisé en ce
    que le levier oscillant (5) est formé avec deux bras,
    qu'une came (5.4) est disposée excentriquement sur un autre bras du levier oscillant (5) que le galet de renvoi (6),
    que le bras oscillant (10) peut pivoter autour de la came (5.4), et
    que le bras oscillant (10) peut être pivoté par une force élastique agissant sur lui de telle sorte qu'il freine le support de galets (2).
  2. Dispositif selon la revendication 1, caractérisé en ce que le bras oscillant (10) peut être pivoté par la came (5.4) du levier oscillant (5) à l'encontre de la force élastique agissant sur lui.
  3. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le levier oscillant (5) peut pivoter à l'encontre de la tension élastique agissant sur lui lorsqu'un effet de force est appliqué à son extrémité (5.1) libre supportant le galet de renvoi (6).
  4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un effet de freinage peut être exercé sur le support de galets (2) au moyen de la tension élastique agissant sur le bras oscillant (10).
  5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que, par le pivotement du bras oscillant (10) en raison du mouvement de la came (5.4) du levier oscillant (5) à l'encontre de la tension élastique agissant sur le bras oscillant (10), un relâchement du support de galets (2) ou une libération de l'effet de freinage agissant sur celui-ci est effectué.
  6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé par un ruban de freinage (12) fixé au bras oscillant (10) et guidé autour d'un appendice (2.1) du support de galets (2).
  7. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la came (5.4) vient en prise dans un évidement (10.2) du bras oscillant (10).
  8. Dispositif selon la revendication 7, caractérisé en ce que l'évidement (10.2) du bras oscillant (10) est un trou oblong, en particulier un trou oblong ovale.
  9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la tension exercée sur le levier pivotant (5) et/ou le bras oscillant (10) est respectivement provoquée par au moins un ressort, en particulier par respectivement au moins un ressort hélicoïdal (8 ; 11).
  10. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la came (5.4) peut être réglée angulairement autour de l'axe (A2) du levier pivotant (5).
  11. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la force élastique agissant sur le bras oscillant (10) peut être modifiée, en particulier par modification de la force de ressort et/ou du nombre de ressorts provoquant la force élastique agissant sur le bras oscillant (10).
EP17000946.8A 2016-06-06 2017-06-02 Dévidoir destiné à une bande, comme une bande d'étiquettes Active EP3255001B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016006747.0A DE102016006747A1 (de) 2016-06-06 2016-06-06 Abwickelvorrichtung für ein Band, wie Etikettenband

Publications (2)

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

Family

ID=59014424

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17000946.8A Active EP3255001B1 (fr) 2016-06-06 2017-06-02 Dévidoir destiné à une bande, comme une bande d'étiquettes

Country Status (2)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019214964B4 (de) * 2019-09-30 2024-05-16 Multivac Sepp Haggenmüller Se & Co. Kg Folienaufnahmevorrichtung sowie Verfahren zum Abwickeln einer Folienrolle

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE538276A (fr) * 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 (de) 2006-03-30 2007-08-09 Herma Gmbh Abwickelvorrichtung mit einer Bremse
CN102372104A (zh) * 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 凸轮控制的摩擦式恒张力机构

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

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