EP2523883A1 - Unreeling assembly, particularly for labeling devices - Google Patents
Unreeling assembly, particularly for labeling devicesInfo
- Publication number
- EP2523883A1 EP2523883A1 EP20110700177 EP11700177A EP2523883A1 EP 2523883 A1 EP2523883 A1 EP 2523883A1 EP 20110700177 EP20110700177 EP 20110700177 EP 11700177 A EP11700177 A EP 11700177A EP 2523883 A1 EP2523883 A1 EP 2523883A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reel
- continuous film
- unreeled
- unreeling
- supporting frame
- 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
- 238000002372 labelling Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 3
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
- B65H26/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to a predetermined diameter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/10—Size; Dimensions
- B65H2511/11—Length
- B65H2511/112—Length of a loop, e.g. a free loop or a loop of dancer rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/10—Size; Dimensions
- B65H2511/14—Diameter, e.g. of roll or package
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/10—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/10—Speed
- B65H2513/11—Speed angular
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2555/00—Actuating means
- B65H2555/20—Actuating means angular
- B65H2555/24—Servomotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
- B65H2557/20—Calculating means; Controlling methods
- B65H2557/24—Calculating methods; Mathematic models
-
- 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
- B65H2701/192—Labels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/75—Labelling machines
Definitions
- the present invention relates to an unreeling assembly, particularly for labeling devices.
- the feeding means have, generally, an unreeling assembly, which is typically comprised of two reels of continuous film which are supported by a respective reel support; from one of the two reels, by the action of a traction drum, the continuous film is unreeled and is then cut by a cutting assembly arranged downstream of the unreeling assembly, in order to then be sent to the applicator elements.
- an unreeling assembly which is typically comprised of two reels of continuous film which are supported by a respective reel support; from one of the two reels, by the action of a traction drum, the continuous film is unreeled and is then cut by a cutting assembly arranged downstream of the unreeling assembly, in order to then be sent to the applicator elements.
- the "working" reel i.e. the reel from which the continuous film is unreeled
- the traction drum a plurality of return rolls are normally interposed, as well as a tensioning dandy roll.
- the unreeling assembly in addition to feeding the continuous film to the cutting assembly to be cut, also has the function of correctly tensioning the film, longitudinally, by the action of the tensioning dandy roll.
- the reel supports are associated with respective servomotors; in these cases, there are means of detecting the reel radius, which are normally constituted by a sensor (optical, laser or mechanical), which precisely measures the radius of the reel being unreeled so as to make it possible to alter the angular velocity of the reel support as well as, in some cases, to know when the reel is about to be depleted.
- a sensor optical, laser or mechanical
- measuring the radius of the reel being unreeled makes it possible to determine the angular velocity of the reel support so as to control the position of the tensioning dandy roll and, consequently, the tensioning of the continuous film being unreeled.
- measuring the radius suffers, perceptibly, from possible detection errors or tolerances on the part of the sensors.
- the senor for measuring the reel radius is positioned close to areas that are the focus of operations (such as changing reels): this leads to the risk that they can undergo impacts or movements with the consequent necessity of performing adjustments, calibrations or replacements.
- the aim of the present invention is to solve the above-mentioned problems and overcome the above-mentioned drawbacks, by providing an unreeling assembly, particularly for labeling devices, which is considerably easier and more practical to use than the unreeling assemblies of known types that are used today.
- an object of the invention is to make available an unreeling assembly, particularly for labeling devices, that estimates the reel radius with exceptional precision.
- Another object of the invention is to provide an unreeling assembly, particularly for labeling devices, that can be made at low cost so as to make its use advantageous also from an economic viewpoint.
- an unreeling assembly particularly for labeling devices, comprising a supporting frame for at least one reel of continuous film which is supported by a respective reel support and can rotate about an unreeling axis of the reel and a motorized traction drum, which is designed to unreel said continuous film from said reel of continuous film, where between said reel of continuous film and said traction drum at least one tensioning element is provided, which is movable, with respect to said supporting frame, along a respective movement path, characterized in that it comprises means for estimating the radius of said reel of continuous film as a function of the data related to the angular velocity of said reel, to the speed of the film drawn by the traction drum and to the position of the tensioning element with respect to said supporting frame along the respective movement path.
- Figure 1 is a schematic view of a first embodiment of an unreeling assembly according to the invention
- FIGS 2, 3 and 4 are also schematic views of three possible embodiments of an unreeling assembly according to the invention.
- the present invention relates to an unreeling assembly, generally indicated with the reference numeral 1, particularly for labeling devices.
- the unreeling assembly 1 comprises, in particular, a supporting frame 2 for at least one reel 3 of continuous film 10 which will be cut for making the labels.
- the reel or each reel 3 is supported by a respective reel support 4, which is mounted on the supporting frame 2 and can rotate about a respective unreeling axis 100 of the reel 3.
- the unreeling assembly 1 is moreover provided with a motorized traction drum 5, for example by means of a respective actuation motor 9, which is designed to unwind the continuous film 10 from the reel 3.
- At least one tensioning element 6 is provided between the reel 3 and the traction drum 5, which tensioning element is movable, with respect to the supporting frame 2, along a respective movement path 200.
- the unreeling assembly 1 comprises means 20 for estimating the radius (r) of the reel 3 of continuous film 10 being unreeled as a function of the data related to the angular velocity ( ⁇ ) of the reel 3, to the speed (v) of the film drawn by the traction drum (5) and to the position ( ⁇ ) of the tensioning element 6 with respect to the supporting frame 2 along the respective movement path 200.
- the estimation means 20 acquire, for example by means of respective encoders, and calculate the aforementioned data substantially instantaneously where the term instantaneously is used to mean that the acquisition and/or calculation times (for example in the order of a few milliseconds) are negligible in the context of the timing that characterizes the process.
- the estimation means 20 comprise a "state observer", i.e. a system of differential equations that estimates the evolution over time of an observable variable, specifically, of the radius (r) of the reel being unreeled.
- a state observer i.e. a system of differential equations that estimates the evolution over time of an observable variable, specifically, of the radius (r) of the reel being unreeled.
- the "state observer” 21 can be adapted to acquire the data item related to the speed (v) of the film drawn by the traction drum 5 from a control device, indicated with the numeral 23, which is adapted to control a motor 9 for actuating the traction drum 5, whereas the values related to the angular velocity ( ⁇ ) of the reel 3 and to the position ( ⁇ ) of the tensioning element 6 are acquired by the acquisition means 11.
- estimation means 20 comprises:
- control means 22 which are designed to control the angular velocity ( ⁇ ) of the reel 3 (by acting on a respective servomotor 13) and adapted to send the data item related to the aforementioned angular velocity ( ⁇ ) to the state observer 21 ;
- control device 23 which is associated with an actuation motor 9, designed to control the speed (v) of the traction drum 5 and adapted to send the data item related to the aforementioned speed (v) to the state observer 21.
- the estimation means 20 comprise data acquisition means 11 which are adapted to acquire the angular velocity ( ⁇ ) of the reel 3 of continuous film 10 being unreeled and the speed (v) of the film drawn by the traction drum 5 by means of, for example, respective encoders and the position ( ⁇ ) of the tensioning element 6 with respect to the supporting frame 2 along the respective movement path 200 for example by means of a potentiometer.
- These data acquisition means 11 are associated with a "state observer" 21 which is designed to perform the estimation of the radius (r) of the reel 3 being unreeled.
- control device 23 There is nothing to prevent the control device 23, the control means 22, the acquisition means 1 1 and the state observer 21 from being all integrated, or being only partly integrated, in the same processor or in different processors.
- the supporting frame 2 supports, between the reel 3 of continuous film 10 being unreeled and the traction drum 5, a plurality of return rolls 7.
- the supporting frame 2 can support at least two reels; between these two reels and the tensioning element 6, there is a joining station 8 which is designed to provide the connection between the end portion of the continuous film 10 unreeled from the reel 3 about to be depleted and the end portion of the film supported by the other reel.
- the tensioning element 6 can be constituted by what is called a tensioning dandy roll 6a which is supported by the supporting frame 2 so that it can rotate about a respective pivoting axis 101.
- the position ( ⁇ ) of the tensioning element 6 with respect to the supporting frame 2 is constituted by the angular shift of the tensioning dandy roll 6a with respect to a predetermined base position, which is normally measured by means that are per se known such as, for example, an angular potentiometer.
- the measurement of this data item is also normally performed in the unreeling assemblies 1 to make it possible to operate on the braking devices or on the servomotors associated with the reel supports 4 in order to keep the tension of the continuous film 10 being unreeled from the reel 3 constant.
- the estimation means 20, and in particular the state observer 21 uses, in order to estimate the radius (r) of the reel 3 being unreeled, the following system of differential equations:
- - i is a constant that depends on the geometry of the unreeling assembly
- - k3 is an optional constant that depends on the thickness of the film
- - k4 is a constant that depends on the electronic adjustments of the system
- - ( ⁇ , r ) are the estimates of the position of the tensioning element 6 with respect to the supporting frame 2 and of the radius (r) of the reel 3 being unreeled; - ( ⁇ , ⁇ ) are the derivatives of these estimates.
- the present invention also provides a method for estimating the radius (r) of a reel 3 of continuous film 10 being unreeled as a result of the action of a motorized traction drum 5.
- the method comprises a step of estimation, by estimation means (20), of the radius (r) of the reel (3) of continuous film (10) being unreeled as a function of the data related to the angular velocity ( ⁇ ) of the reel (3) of continuous film (10) being unreeled, to the speed (v) of the continuous film (10) drawn on the traction drum (5) and to the position ( ⁇ ) of the tensioning element (6) with respect to a supporting frame (2).
- the estimation means (20) are capable of acquiring/calculating, instantaneously, the data related to the angular velocity ( ⁇ ) of the reel 3 of continuous film 10 being unreeled, to the speed (v) of the continuous film 10 drawn by the traction drum 5 and to the position ( ⁇ ) of the tensioning element 6.
- the unreeling assembly 1 is capable of estimating the radius (r) of the reel 3 very precisely and reliably without using any sensor, with an evident simplification of the unreeling assembly in terms of construction and with consequent reduction in costs.
- the estimate of the radius (r) is substantially impervious to any ovalization phenomena of the reel 3 and, therefore, it prevents the possibility of underestimating the radius, such possibility being very frequent in the known unreeling assemblies.
Landscapes
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITVR2010A000003A IT1397684B1 (en) | 2010-01-15 | 2010-01-15 | UNBINDING GROUP, PARTICULARLY FOR LABELING DEVICES |
PCT/EP2011/050399 WO2011086128A1 (en) | 2010-01-15 | 2011-01-13 | Unreeling assembly, particularly for labeling devices |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2523883A1 true EP2523883A1 (en) | 2012-11-21 |
EP2523883B1 EP2523883B1 (en) | 2018-04-04 |
Family
ID=42542908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11700177.6A Active EP2523883B1 (en) | 2010-01-15 | 2011-01-13 | Unreeling assembly, particularly for labeling devices |
Country Status (5)
Country | Link |
---|---|
US (1) | US20120318905A1 (en) |
EP (1) | EP2523883B1 (en) |
ES (1) | ES2672899T3 (en) |
IT (1) | IT1397684B1 (en) |
WO (1) | WO2011086128A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107792703A (en) * | 2017-11-21 | 2018-03-13 | 苏州工业园区天势科技有限公司 | Transmission detent mechanism for composite label |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7006938B2 (en) * | 2018-12-21 | 2022-01-24 | 株式会社ミヤコシ | Continuous label paper scrap removal device |
DE102019001174A1 (en) * | 2019-02-18 | 2020-08-20 | Giesecke+Devrient Currency Technology Gmbh | Device for packaging sheet material |
CN111044852B (en) * | 2019-11-12 | 2021-11-05 | 浙江耀阳新材料科技有限公司 | Thin film breakdown test equipment |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4199118A (en) * | 1979-01-10 | 1980-04-22 | The Black Clawson Company | Method and apparatus for controlling the braking system for an unwinder |
US4286757A (en) * | 1980-04-03 | 1981-09-01 | The Black Clawson Company | Method and apparatus for controlling the braking system for an unwinder |
DE19520955C2 (en) * | 1995-06-08 | 1999-10-28 | Roland Man Druckmasch | Control arrangement for unwinding devices for webs |
JP2003327354A (en) * | 2002-05-10 | 2003-11-19 | Zuiko Corp | Web splicing method and device |
US7331542B2 (en) * | 2003-05-09 | 2008-02-19 | Intellipack | Film unwind system with hinged spindle and electronic control of web tension |
EP1714926B1 (en) * | 2005-04-20 | 2008-07-16 | Windmöller & Hölscher KG | Method for controlling and/or monitoring a web processing machine |
DE102007049680A1 (en) * | 2007-10-17 | 2009-04-23 | Robert Bosch Gmbh | Method for calculating the diameter of a web winding on a roll and winding control system |
TWI409207B (en) * | 2010-12-01 | 2013-09-21 | Metal Ind Res & Dev Ct | Winding apparatus providing steady tension |
-
2010
- 2010-01-15 IT ITVR2010A000003A patent/IT1397684B1/en active
-
2011
- 2011-01-13 ES ES11700177.6T patent/ES2672899T3/en active Active
- 2011-01-13 US US13/261,360 patent/US20120318905A1/en not_active Abandoned
- 2011-01-13 WO PCT/EP2011/050399 patent/WO2011086128A1/en active Application Filing
- 2011-01-13 EP EP11700177.6A patent/EP2523883B1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2011086128A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107792703A (en) * | 2017-11-21 | 2018-03-13 | 苏州工业园区天势科技有限公司 | Transmission detent mechanism for composite label |
Also Published As
Publication number | Publication date |
---|---|
EP2523883B1 (en) | 2018-04-04 |
WO2011086128A1 (en) | 2011-07-21 |
IT1397684B1 (en) | 2013-01-18 |
US20120318905A1 (en) | 2012-12-20 |
ITVR20100003A1 (en) | 2011-07-16 |
ES2672899T3 (en) | 2018-06-18 |
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