EP2735538A1 - System und Verfahren zur Synchronisierung von Drehbewegungen elementarer Teile einer Anlage zur Verarbeitung von Behältern - Google Patents

System und Verfahren zur Synchronisierung von Drehbewegungen elementarer Teile einer Anlage zur Verarbeitung von Behältern Download PDF

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Publication number
EP2735538A1
EP2735538A1 EP12425187.7A EP12425187A EP2735538A1 EP 2735538 A1 EP2735538 A1 EP 2735538A1 EP 12425187 A EP12425187 A EP 12425187A EP 2735538 A1 EP2735538 A1 EP 2735538A1
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EP
European Patent Office
Prior art keywords
rotating
rotating part
information signal
position information
plant
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.)
Withdrawn
Application number
EP12425187.7A
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English (en)
French (fr)
Inventor
Federica Sorbi
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Sidel SpA
Original Assignee
Sidel SpA
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Filing date
Publication date
Application filed by Sidel SpA filed Critical Sidel SpA
Priority to EP12425187.7A priority Critical patent/EP2735538A1/de
Publication of EP2735538A1 publication Critical patent/EP2735538A1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/007—Applications of control, warning or safety devices in filling machinery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C7/00—Concurrent cleaning, filling, and closing of bottles; Processes or devices for at least two of these operations
    • B67C7/0006—Conveying; Synchronising
    • B67C7/0013—Synchronising
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C2003/227—Additional apparatus related to blow-moulding of the containers, e.g. a complete production line forming filled containers from preforms

Definitions

  • the present invention relates to a system and to a method for synchronizing the rotating motions of elementary parts of a processing plant, generally intended for processing of containers.
  • a combined bottling plant includes a number of cooperating processing machines, performing a number of corresponding operations, such as formation, filling, labelling and capping of containers, for example plastic bottles.
  • the various processing machines are arranged in a desired operating sequence, at a close distance one with respect to the other, and conveying assemblies, each including a number of transfer starwheels or analogous conveying elements, allow transfer of the containers among the various processing machines, through the operating sequence.
  • Figure 1 schematically shows an exemplary arrangement for a combined bottling plant 1, including a blower machine 2 (only diagrammatically shown), which receives at its input preforms and provides at its output formed bottles, and a filler machine 4 (also diagrammatically shown), which receives at its input the formed bottles and fills the same bottles with a liquid food product, making them available for successive processing steps (e.g. for labelling and/or capping operations).
  • the combined bottling plant 1 may also include a reservoir arrangement for the possible temporary accumulation of bottles during their transfer within the plant.
  • the blower machine 2 rotates around a first axis A, driven by a first asynchronous motor 6, e.g. a gear motor; a first position sensor 7, e.g. an incremental encoder, is coupled to the blower machine 2, and provides position information about the rotary motion thereof, which may be provided to a control unit (not shown) of the first asynchronous motor 6, in order to implement a position feedback control of its operation.
  • a first position sensor 7, e.g. an incremental encoder is coupled to the blower machine 2, and provides position information about the rotary motion thereof, which may be provided to a control unit (not shown) of the first asynchronous motor 6, in order to implement a position feedback control of its operation.
  • the filler machine 4 rotates around a second axis B, possibly parallel to the first axis A, driven by a second asynchronous motor 8, e.g. a brushless motor; a second position sensor 9, e.g. an absolute encoder, is coupled to the filler machine 4, and provides position information about the rotary motion thereof to a respective control unit.
  • a second asynchronous motor 8 e.g. a brushless motor
  • a second position sensor 9 e.g. an absolute encoder
  • the combined bottling plant 1 further includes a conveying arrangement for transporting the articles, in this case plastic bottles, and conveying them to and from the blower and filler machines 2, 4.
  • the conveying arrangement includes: an inlet conveyor assembly 10, receiving preforms from an input line 11 and feeding them to the blower machine 2; a transfer conveyor assembly 12, for displacing the formed bottles from the upstream blower machine 2 to the downstream filler machine 4; and an outlet conveyor 13, for feeding the filled bottles from the filler machine 4 to an output line 14.
  • Each conveyor assembly 10, 12, 13 includes a respective number of star wheels 15, each rotating around a respective axis of rotation and carrying the articles to be transferred along their periphery (at respective seats, in a known manner, here not discussed in details), or a combination of star wheels and linear conveyors, e.g. belt, air or chain conveyors.
  • Each star wheel 15 may be provided with a respective electric motor (and with a suitable control unit and position sensor), to drive its rotary motion.
  • Conveyor assemblies 10, 12, 13 may also be selectively configurable in order to define alternative paths for the articles to be transferred to and/or from accumulation reservoirs (in a known manner, here not shown in detail).
  • Positioning errors occurring in the control of the rotary motions may indeed jeopardize the correct operation of the bottling plant, and the general efficiency of the processing being performed.
  • the aim of the present invention is consequently to solve, at least in part, the problems previously highlighted, and in particular to provide an improved solution for synchronizing the rotary motions of different rotating parts of the plant.
  • an aspect of the present solution envisages a coupling between the rotating parts of the plant, which have to be synchronized, through a single digital field bus, transferring digital signals carrying position information related to the rotary motion.
  • the single digital field bus allows to achieve the desired synchronization, simplifying connections and minimizing the likelihood of errors.
  • deterministic delays introduced by the digital communication via the field bus are properly accounted for, by means of an extrapolation function, executed at a slave rotating part (that is to be synchronized to the motion of a master rotating part); the extrapolation function provides an estimated current position of the master rotating part, based on the received digital position information related to the rotating motion of the same master rotating part and the deterministic delay introduced by the digital communication link.
  • FIG 2 schematically shows an exemplary synchronization system 20, for synchronizing the rotating motions of two rotating parts of a plant for processing containers, e.g. the combined bottling plant 1 discussed with reference to Figure 1 , in the example a blower machine, again denoted with 2, and a filler machine, again denoted with 4.
  • a blower machine again denoted with 2
  • a filler machine again denoted with 4.
  • the blower machine 2 acts as a master, so that the first axis A is the master axis; the filler machine 4, which is to be synchronized to the rotating motion of the blower machine 2, acts as a slave, so that the second axis B is the slave axis; in other words, the rotating motion of the filler machine 4 has to track, according to a desired relation, the rotating motion of the blower machine 2, the rotation speeds being possibly different and independently controllable.
  • the blower machine 2 includes a rotating wheel 22, which is driven by the first asynchronous motor 6, controlled by a master control unit 24, for example including a PLC (Programmable Logic Controller), which provides suitable control signals thereto; in a manner not shown, a power supply is provided to power the first asynchronous motor 6 and the master control unit 24.
  • a master control unit 24 for example including a PLC (Programmable Logic Controller), which provides suitable control signals thereto; in a manner not shown, a power supply is provided to power the first asynchronous motor 6 and the master control unit 24.
  • PLC Programmable Logic Controller
  • the synchronization system 20 includes the first position sensor 7, coupled to the blower machine 2, in particular to the rotating wheel 22 and first asynchronous motor 6, and configured to detect the position of the rotating wheel 22 during its rotation around the first axis A.
  • the first position sensor 7 may be an incremental encoder, providing a first digital position signal P 1 , carrying information about the encoder count and detected position.
  • the first digital position signal P 1 is also supplied to the master control unit 24, in order to implement a feedback control of the actuation of the first asynchronous motor 6.
  • the synchronization system 20 includes a master bus coupler 25, in the example arranged at the blower machine 2, which receives the first digital position signal P 1 and is interfaced to a digital coupling bus 26, in particular a field bus, operating with an Ethernet protocol, e.g. the Powerlink protocol; the digital coupling bus 26 is arranged and configured to transfer digital signals between the blower machine 2 and the filler machine 4.
  • a master bus coupler 25 in the example arranged at the blower machine 2, which receives the first digital position signal P 1 and is interfaced to a digital coupling bus 26, in particular a field bus, operating with an Ethernet protocol, e.g. the Powerlink protocol; the digital coupling bus 26 is arranged and configured to transfer digital signals between the blower machine 2 and the filler machine 4.
  • the synchronization system 20 further includes a slave bus coupler 28 and a slave control unit 29, in the example arranged at the filler machine 4.
  • the slave bus coupler 28 is interfaced to the digital coupling bus 26, so as to receive the first digital position signal P 1 from the first position sensor 7 of the blower machine 2.
  • the slave control unit 29 for example including a PLC, is coupled to the slave bus coupler 28 through a digital link 30, e.g. an X2X link, thus receiving the first digital position signal P 1 .
  • the slave control unit 29 is also coupled to a driver unit 32, which is configured to drive the second asynchronous motor 8, e.g. a brushless motor, of the filler machine 4.
  • a driver unit 32 which is configured to drive the second asynchronous motor 8, e.g. a brushless motor, of the filler machine 4.
  • the slave control unit 29 carries out a feedback control of the actuation, through the position information received from the second position sensor 9, e.g. an absolute encoder, coupled to the filler machine 4 and providing position information about the rotary motion thereof (through a second digital position signal P 2 ).
  • the second position sensor 9 e.g. an absolute encoder
  • the slave control unit 29 is configured to carry out suitable program and software instructions, in order to synchronize the rotating motions of the filler machine 4 to the respective rotating motion of the blower machine 2, based on the position information carried by the received first digital position signal P 1 .
  • the slave control unit 29 generates driving signal DS for the driver unit 32, also based on the first digital position signal P 1 in such a manner that the rotating motions of the blower and filler machines 2, 4 are synchronized.
  • the slave control unit 29 is configured to take into account a delay, in particular a deterministic delay, associated to the digital transmission of information through the digital coupling bus 26.
  • the Applicant has indeed realized, through tests and simulations, that the delay associated to the digital coupling bus 26 may cause position errors while tracking or synchronizing the master and slave axes.
  • the position error due to the deterministic delay in the reading of the first digital position signal P 1 is proportional to the speed of rotation of the rotating wheel 22 of the blower machine 2.
  • a maximum position error of about 4,8 mm occurs at the highest speed of 30000 b/h.
  • the slave control unit 29 is configured to execute an extrapolation algorithm, in order to estimate an actual position of the rotating wheel 22 of the blower machine 2 based on the position information carried by the received first digital position signal P 1 .
  • v(t i ) and a(t i ) are the calculated speeds and, respectively, accelerations of the rotating wheel 22 of the blower machine 2 at times t i ; del is the deterministic temporal delay associated to the digital transmission of information through the digital coupling bus 26 (and possible further digital coupling means); and x extr (t i ) is the estimated current position of the rotating wheel 22 of the blower machine 2 at times t i , as determined through the extrapolation algorithm.
  • the slave control unit 29, through the extrapolation algorithm, is thus able to estimate the actual position x extr associated to the master axis and to minimize the positioning errors in the synchronization of the slave axis with the same master axis.
  • Figure 4 shows the time plot of the tracking position error at the three exemplary speeds of the blower machine 2: 5000 b/h; 30000 b/h; and 15000 b/h.
  • the tracking position error is greatly reduced with respect to the case shown in Figure 3 , having a substantially constant value of about 0,1 mm at the various speeds.
  • the deterministic temporal delay del associated to the digital transmission of information may vary, depending on the arrangement and protocol for the digital information link coupling the master and slave parts of the plant; in any case, the value of this delay is known to the slave control unit 29.
  • the delay is due to the digital coupling bus 26 and digital link 30, and the Ethernet transmission protocols implemented thereon.
  • the value of the delay, determined based on the characteristics of the digital transmission means, may also be confirmed and, in case, adjusted, via empirical tests and evaluations.
  • the synchronization system allows to minimize positioning errors in the tracking between the rotating parts in the plant, in a simple and reliable manner.
  • the extrapolation algorithm implemented at the slave control unit also allows to account for any deterministic delay due to the digital transmission of information through the field bus.
  • the discussed synchronization method may be applied also in the case where a greater number of rotating parts are to be synchronized, e.g. in a bottling plant including also a labeller machine and/or a capping machine and/or a pasteurization machine, in addition to, or substitution of, the blower and filler machines.
  • the digital coupling bus 26 may couple the various rotating parts in a manner that is substantially analogous to what discussed previously, with each slave rotating machine being able to achieve synchronization and tracking based on the position information received from a master rotating machine, extrapolated based on the respective deterministic delay associated to the arrangement of the same slave rotating machine with respect to the master machine.
  • the described synchronization system may be advantageously employed in any case where two or more rotating parts are to be synchronized in a processing plant.
  • the type and configuration of the elementary parts of the bottling plant 1, previously shown and discussed, is to be considered only as exemplary: e.g. the electric motors could be of a different kind, so as the position sensors, that could include any kind of sensors able to track the position with respect to the respective rotating axis.

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  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
EP12425187.7A 2012-11-22 2012-11-22 System und Verfahren zur Synchronisierung von Drehbewegungen elementarer Teile einer Anlage zur Verarbeitung von Behältern Withdrawn EP2735538A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12425187.7A EP2735538A1 (de) 2012-11-22 2012-11-22 System und Verfahren zur Synchronisierung von Drehbewegungen elementarer Teile einer Anlage zur Verarbeitung von Behältern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12425187.7A EP2735538A1 (de) 2012-11-22 2012-11-22 System und Verfahren zur Synchronisierung von Drehbewegungen elementarer Teile einer Anlage zur Verarbeitung von Behältern

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EP2735538A1 true EP2735538A1 (de) 2014-05-28

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EP12425187.7A Withdrawn EP2735538A1 (de) 2012-11-22 2012-11-22 System und Verfahren zur Synchronisierung von Drehbewegungen elementarer Teile einer Anlage zur Verarbeitung von Behältern

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018108331A1 (de) * 2016-12-13 2018-06-21 Krones Ag Etikettiermaschine, druckmaschine, inspektionsmaschine und verfahren zur inbetriebnahme eines bussystems in einer solchen maschine
FR3062642A1 (fr) * 2017-08-21 2018-08-10 Sidel Participations Procede de reglage d'une installation de traitement d'une succession de recipients et installation associee
EP3409442A1 (de) * 2017-06-02 2018-12-05 Sidel Participations Verbessertes system und verfahren zum synchronisieren einer maschine zur herstellung von behältern und behälterbearbeitungsmaschine in einer behälterbearbeitungsanlage
WO2019034266A1 (en) * 2017-08-18 2019-02-21 Sidel Participations SYSTEM AND METHOD FOR SPEED ADAPTATION IN COMBINED CONTAINER TREATMENT PLANT
WO2020128297A1 (fr) * 2018-12-19 2020-06-25 Sidel Participations Ligne de production de recipients controlee par un dispositif de determination de position

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0739855A2 (de) * 1995-04-28 1996-10-30 Norbert Fleuren Vorrichtung zur Bearbeitung von Gebinden od. dgl.
DE102007005489A1 (de) * 2007-01-30 2007-07-26 Bachmann Gmbh Rundgetaktete Maschine, insbesondere Blasformmaschine
EP2082979A1 (de) * 2008-01-25 2009-07-29 Shibuya Kogyo Co., Ltd. Gegenstandverarbeitungssystem
WO2011029856A2 (de) * 2009-09-14 2011-03-17 Krones Ag Vorrichtung zum herstellen von flüssigkeitsbehältnissen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0739855A2 (de) * 1995-04-28 1996-10-30 Norbert Fleuren Vorrichtung zur Bearbeitung von Gebinden od. dgl.
DE102007005489A1 (de) * 2007-01-30 2007-07-26 Bachmann Gmbh Rundgetaktete Maschine, insbesondere Blasformmaschine
EP2082979A1 (de) * 2008-01-25 2009-07-29 Shibuya Kogyo Co., Ltd. Gegenstandverarbeitungssystem
WO2011029856A2 (de) * 2009-09-14 2011-03-17 Krones Ag Vorrichtung zum herstellen von flüssigkeitsbehältnissen

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018108331A1 (de) * 2016-12-13 2018-06-21 Krones Ag Etikettiermaschine, druckmaschine, inspektionsmaschine und verfahren zur inbetriebnahme eines bussystems in einer solchen maschine
US10450179B2 (en) 2017-06-02 2019-10-22 Sidel Participations System and method for synchronization of a container forming machine and a container processing machine in a container processing plant
EP3409442A1 (de) * 2017-06-02 2018-12-05 Sidel Participations Verbessertes system und verfahren zum synchronisieren einer maschine zur herstellung von behältern und behälterbearbeitungsmaschine in einer behälterbearbeitungsanlage
CN111183013B (zh) * 2017-08-18 2022-06-03 西得乐公司 组合容器处理设备中的速度适应系统和方法
WO2019034266A1 (en) * 2017-08-18 2019-02-21 Sidel Participations SYSTEM AND METHOD FOR SPEED ADAPTATION IN COMBINED CONTAINER TREATMENT PLANT
CN111183013A (zh) * 2017-08-18 2020-05-19 西得乐公司 组合容器处理设备中的速度适应系统和方法
CN109421243B (zh) * 2017-08-21 2022-03-18 西德尔合作公司 系列容器处理设备的调节方法和相关设备
CN109421243A (zh) * 2017-08-21 2019-03-05 西德尔合作公司 系列容器处理设备的调节方法和相关设备
US10890891B2 (en) 2017-08-21 2021-01-12 Sidel Participations Method for regulating a facility for processing a series of containers and corresponding facility
EP3446851A1 (de) * 2017-08-21 2019-02-27 Sidel Participations Regulierungsverfahren einer anlage zur bearbeitung einer folge von behältern, und entsprechende anlage
FR3062642A1 (fr) * 2017-08-21 2018-08-10 Sidel Participations Procede de reglage d'une installation de traitement d'une succession de recipients et installation associee
WO2020128297A1 (fr) * 2018-12-19 2020-06-25 Sidel Participations Ligne de production de recipients controlee par un dispositif de determination de position
FR3090456A1 (fr) * 2018-12-19 2020-06-26 Sidel Participations Ligne de production de récipients controlée par un dispositif de détermination de position
CN113195198A (zh) * 2018-12-19 2021-07-30 西得乐集团 由位置确定装置控制的用于生产容器的生产线
EP3898174B1 (de) 2018-12-19 2023-01-25 Sidel Participations Durch eine positionsbestimmungsvorrichtung gesteuerte produktionslinie zur herstellung von behältern
CN113195198B (zh) * 2018-12-19 2023-08-29 西得乐集团 由位置确定装置控制的用于生产容器的生产线

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