US20130264410A1 - Method for Operating a Processing Machine - Google Patents

Method for Operating a Processing Machine Download PDF

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Publication number
US20130264410A1
US20130264410A1 US13/856,316 US201313856316A US2013264410A1 US 20130264410 A1 US20130264410 A1 US 20130264410A1 US 201313856316 A US201313856316 A US 201313856316A US 2013264410 A1 US2013264410 A1 US 2013264410A1
Authority
US
United States
Prior art keywords
web
clamping point
tensile force
web section
section
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.)
Abandoned
Application number
US13/856,316
Other languages
English (en)
Inventor
Holger Schnabel
Stephan Schultze
Mario Goeb
Jochen Mueller
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GOEB, MARIO, MUELLER, JOCHEN, SCHNABEL, HOLGER, SCHULTZE, STEPHAN
Publication of US20130264410A1 publication Critical patent/US20130264410A1/en
Abandoned legal-status Critical Current

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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
    • B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or 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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/1882—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling longitudinal register of 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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/192—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web motor-controlled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/512—Changing form of handled material
    • B65H2301/5126—Embossing, crimping or similar processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/514—Modifying physical properties
    • B65H2301/5144—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/517—Drying material
    • 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
    • B65H2404/14—Roller pairs
    • B65H2404/147—Roller pairs both nip rollers being driven
    • 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
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/31—Tensile forces
    • 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
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the present disclosure relates to a method for operating a processing machine.
  • the product web can be formed from paper, material, paperboard, plastic, metal, rubber, in the form of film or foil, and so on.
  • Web processing machines such as printing machines, in particular in gravure printing machines, screen printing machines and inline flexographic printing machines, have printing units, for example, as processing devices and one or more other processing devices, such as dryers, an embosser or punch. If the product web is clamped in during processing, such as in most printing units or embossers, these are generally to be designated clamping processing devices or clamping points.
  • the material web is subdivided by clamping points into various web sections also possibly having different web tensile force values, since a clamping point in the “closed” state clamps the product web in and forms a frictionally fitting unit. After a certain time, the web tensile force is established in a steady state in the sections (with an assumed constant rotational speed of the cylinders and therefore conveying speed of the web).
  • each printing unit comprises a printing cylinder 111 a, 112 a, 113 a and an impression cylinder, which are set against each other and clamp the product web 101 in.
  • the embosser 110 comprises a driven embossing cylinder 110 a and an impression cylinder.
  • the printing machine 100 is controlled by a computing unit 200 , which is set up by programming and communicates with actuators (e.g. motors) and sensors (e.g. register mark sensors, rotational angle sensors).
  • each printing unit there are a dryer 102 and a cooling roll 103 , respectively.
  • a driven infeed unit 115 Before the printing units there is a driven infeed unit 115 and, at the end of the processing, a driven outfeed unit 114 .
  • Infeed unit and outfeed unit are likewise clamping points, which clamp the product web in.
  • the embosser 110 as a further processing station 110 .
  • the last cooling roll (after the last printing unit in the FIGURE) is displaced after the further processing station, so that this last processing is still carried out on the heated product web.
  • the further processing station also clamps the web in, in exactly the same way as the printing units, and must also operate in a register-maintaining manner. For example, an embossing pattern must be oriented exactly on a printed image.
  • the diameter of the processing stations is normally staggered in such a way that the diameters in the web running direction are always chosen to be slightly larger in order to compensate for a lengthening or stretching of the product web established by the processing (e.g. input of moisture, heating) or the transport (tension), and therefore of the processing steps already carried out (e.g. individual color separations). This also makes it easier to maintain a desired web tensile force.
  • the diameter of the embossing cylinder 110 a is normally chosen to be considerably larger than that of the printing cylinders 111 a - 113 a, since the web normally stretches noticeably on the long path to the embosser as a result of the input of ink and the drying and heating.
  • the disclosure can also be applied to other printing processes, such as (narrow-web) flexographic printing, screen printing or any other type of processing operations. There, too, processing stations are normally connected downstream after the printing units.
  • Another way would be to regulate the web tensile force by means of appropriate activation of the processing devices and to regulate the processing register via the web tensile force set point.
  • the embosser is closed following pre-registration and the web tensile force is subsequently regulated by means of a web tensile force controller.
  • the register controller prescribes a necessary web tensile force set point, which means that the web tensile force controller establishes a web tensile force and a higher-order register controller controls the web tensile force controller.
  • the starting value of the web tensile force set point is determined, for example, by using preceding production runs and is retrievable in a database.
  • a computing unit for example a control device of a printing machine, is set up, in particular by programming, to carry out a method according to the disclosure.
  • Suitable data storage media for providing the computer program are in particular floppy disks, hard drives, flash memories, EEPROMs, CD-ROMs, DVDs and many more. A download of a program via computer networks (Internet, Intranet and so on) is also possible.
  • the FIGURE is a block diagram view of a processing machine configured to be operated according to a method, as described herein.
  • the method disclosed herein creates a possible way of accelerating the starting up or setting up of a processing machine (in particular as far as a state with steady web tensile force and fault-free register) in which, as a result of the closing of a clamping point, a gradual web tension change is caused, and of reducing waste as a result.
  • setting up and transient processes of the web tensile force and register controller are shortened, so that time and rejects are saved (costs of material and printing ink).
  • a method for operating a processing machine, in which a web section is delimited by a first and a second clamping point and a web tension prevails in the web section, in which a third clamping point within this web section (i.e. between the first and the second clamping point) is closed, wherein the web tension in one of the web sections delimited by the third clamping point is then increased to a specific value quickly and specifically by means of appropriate action of an adjusting means. Therefore, the gradual process is shortened and register control can operate substantially normally substantially immediately after the increase. Rejects are reduced as a result.
  • the method includes regulated, controlled or combined setting of a web tensile force which, as far as possible, corresponds to the final web tensile force, and simultaneous/subsequent engagement of the register control. Additionally or alternatively, the web stretch can be adjusted appropriately.
  • actuating commands of the printing units can also be pre-controlled, as described, for example, in DE 10 2005 019 566 A1, DE 10 2007 017 095 A1 or DE 10 2009 005 820 A1.
  • the third clamping point itself can be used as an adjusting means, for example by an angular position and/or a rotational speed of a rotating cylinder of the clamping point being adjusted.
  • the adjustment angle is preferably calculated from the diameters of the third clamping point and the other clamping point delimiting the relevant web section.
  • a rotating cylinder which clamps the product web in, of the third clamping point, for example a printing cylinder, embossing cylinder, transfer cylinder and so on, is adjusted by a specific angle following the closure. This is intended to achieve the situation in which the resultant web tensile force, otherwise established in the steady state only gradually, is built up substantially immediately.
  • the angle to be adjusted is determined from the diameters of the cylinders delimiting the web section (for example of an embossing cylinder and a printing cylinder preceding the embosser) and from the web length between the cylinders which delimit the web section. Dryer lengths, estimated or determined moduli of elasticity, a dryer temperature and/or a moisture content of the material can preferably be taken into account.
  • the result is a non-constant modulus of elasticity E(x,t) in this area.
  • the web length L DW ⁇ PR can be corrected by an amount or factor. If, for example, the material is considerably “softer” (lower E) in the dryer than directly before the embosser at which the register is determined by means of a register sensor, then a considerably greater web length will have to be assumed.
  • an adjusting means in order as a result to increase the web tensile force in the one of the web sections delimited by the third clamping point rapidly and specifically to a specific value, can also be carried out within the context of web tensile force control.
  • the web tensile force control in a computing unit
  • the web tensile force in the relevant web section is adjusted, for example via fine gearing compensation (i.e. a change in the rotational speed), via an additive speed value or via an angular adjustment.
  • the intended web tensile force can, for example, be measured in preceding production runs and subsequently stored.
  • the web tensile force control is switched off and any fine gearing compensation or additive speed that is present is removed. If an angular adjustment has been carried out, this is maintained.
  • the register control can be activated at any desired time following the closure of the clamping point; advantageous for example is the time at which controller output variables of the tensile force control (e.g. fine gearing compensation) are removed.
  • an angular adjustment is carried out in order to obtain very fast presetting of the web tensile force, and the intended web tensile force is subsequently set (e.g. to a previously measured value) by means of the web tensile force control.
  • At least one controller parameter for regulating a register at the second clamping point arranged after the third clamping point and/or for regulating a web tensile force in the web section between the third and the second clamping point has different values for whether the third clamping point is closed or not.
  • Controller parameters such as a proportional gain K P or a reset time T N , can be predefined as a function of the length of the web section.
  • the controller parameters are preferably matched to the shortest and/or longest web length, since here the smallest and largest values have to be set.
  • the web tensile force control which acts on the second clamping point, can be provided with controller parameters which are adapted to the whole of the web length between the first and second clamping point.
  • the web tensile force in the web section between the printing unit 111 as first clamping point and the embosser 110 as third clamping point is to be brought as quickly as possible to the steady-state value following the closure of the embosser, without firstly having to wait for a gradual transient process.
  • the processing register longitudinal register, circumferential register
  • rejects are produced.
  • the embosser is open, the web section is delimited by the outfeed unit 114 as second clamping point.
  • the machine 100 When the machine 100 is set up, first of all the printing units 111 - 113 are brought to a register-maintaining state, so that a good printed image is produced.
  • the embosser 110 is then pre-registered. To this end, the embossing cylinder 110 a is aligned such that, after the latter has been thrown on or during the closure, the embossing pattern is located exactly on the printed image on the product web.
  • the diameter D PR of the embossing cylinder 110 a is noticeably greater than the diameter D DW of the printing cylinder 111 a but these two rotate equally fast, so that following the closure of the embosser 110 , a noticeable rise in the web tensile force in the web section between printing unit 111 and embosser 110 is expected.
  • the embossing cylinder 110 a is rotated by a specific angle ⁇ in addition to a usual rotation substantially immediately following the closure of the embosser 110 , in order to cause an increase in the web tensile force.
  • the angle ⁇ is calculated from the aforesaid diameters and the length L DW ⁇ PR between the printing unit 111 and the embosser 110 in accordance with:
  • the register controller (which is started after the pre-registration or preferably with the closure of the embosser) ensures that the embossing pattern is immediately printed in register and thus no rejects are produced.

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  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Treatment Of Fiber Materials (AREA)
US13/856,316 2012-04-04 2013-04-03 Method for Operating a Processing Machine Abandoned US20130264410A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102012006792 2012-04-04
DE102012006792.5 2012-04-04
DE102012013435A DE102012013435A1 (de) 2012-04-04 2012-07-05 Verfahren zur Vorregistrierung einerBearbeitungsstation
DE102012013435.5 2012-07-05

Publications (1)

Publication Number Publication Date
US20130264410A1 true US20130264410A1 (en) 2013-10-10

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Application Number Title Priority Date Filing Date
US13/856,316 Abandoned US20130264410A1 (en) 2012-04-04 2013-04-03 Method for Operating a Processing Machine

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US (1) US20130264410A1 (de)
CN (1) CN103358686B (de)
DE (1) DE102012013435A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150328879A1 (en) * 2014-05-19 2015-11-19 Matthias Hermann Regelsberger Precision registration in printing cylinder systems
US20190016111A1 (en) * 2017-07-17 2019-01-17 Heidelberger Druckmaschinen Ag Printing machine with a twin printing unit and method for operating such a printing machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015122430A1 (de) * 2015-12-21 2017-06-22 Sig Technology Ag Verfahren zur Regelung der Bearbeitung einer Materialbahn anhand von Registermarken sowie Vorrichtung zur Durchführung des Verfahrens
DE102016224413A1 (de) 2016-12-08 2018-06-14 Robert Bosch Gmbh Verfahren zum Betrieb einer Bahnbearbeitungsmaschine mit druckenden und nichtdruckenden Walzen

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US20050137738A1 (en) * 2003-12-22 2005-06-23 3M Innovative Properties Company Real-time determination of web tension and control using position sensors
US20060150852A1 (en) * 2002-11-22 2006-07-13 Manfred Loddenkoetter Pre-register adjustment
US20090020641A1 (en) * 2006-01-31 2009-01-22 Windmoller & Holscher Kg Device and Method for Measuring and Setting the Web Tension Between Inking Stations of a Multicolor Press
US20090120990A1 (en) * 2007-11-09 2009-05-14 Holger Schnabel Method for adjusting the web tension of a processing machine
US20090145943A1 (en) * 2007-12-07 2009-06-11 Holger Schnabel Method for the axle correction of a processing machine, and a processing machine
US20090211473A1 (en) * 2005-04-27 2009-08-27 Klaus Peters Printing press and method for register correction
US20090293746A1 (en) * 2007-04-10 2009-12-03 Stephan Schultze Method for operating a printing press
US20100139511A1 (en) * 2007-05-25 2010-06-10 Kba-Giori S.A. Intaglio Printing Press Systems for Recto-Verso Intaglio-Printing of Sheets for the Production of Banknotes and Like Securities
US20100269720A1 (en) * 2009-04-03 2010-10-28 Holger Schnabel Method for web tension adjustment
US20110246127A1 (en) * 2010-04-03 2011-10-06 Robert Bosch Gmbh Method for Determining at Least One Controller Parameter of a Dancer Position Control Element
US20110252989A1 (en) * 2008-10-27 2011-10-20 Robert Bosch Gmbh Automatic Axis Correction Method for Use in a Processing Machine for Processing a Product Web

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CH694219A5 (fr) * 2000-02-10 2004-09-30 Bobst Sa Procédé de mise en repérage automatique d'impressions dans une machine rotative et dispositif pour la mise en oeuvre du procédé.
DE10345593A1 (de) * 2003-09-29 2005-07-07 Koenig & Bauer Ag Verfahren zur Bestimmung von produktionsrelevanten Materialeigenschaften der Bedruckstoffe und/oder von Aufzügen
DE102004009861B4 (de) * 2004-03-01 2007-09-20 Koenig & Bauer Aktiengesellschaft Verfahren und Vorrichtung für den Betrieb von Druckeinheiten
CN101092073B (zh) * 2007-07-25 2011-08-31 吴德明 带有定位功能的多用途印刷表面加工***与工艺
DE102009005820A1 (de) 2009-01-22 2010-07-29 Robert Bosch Gmbh Verfahren zur Registerkorrektur bei einer Bearbeitungsmaschine sowie Bearbeitungsmaschine
DE102009010023A1 (de) * 2009-02-21 2010-08-26 Robert Bosch Gmbh Verfahren zur Bahnspannungseinstellung bei einer Bearbeitungsmaschine

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060150852A1 (en) * 2002-11-22 2006-07-13 Manfred Loddenkoetter Pre-register adjustment
US20050137738A1 (en) * 2003-12-22 2005-06-23 3M Innovative Properties Company Real-time determination of web tension and control using position sensors
US20090211473A1 (en) * 2005-04-27 2009-08-27 Klaus Peters Printing press and method for register correction
US20090020641A1 (en) * 2006-01-31 2009-01-22 Windmoller & Holscher Kg Device and Method for Measuring and Setting the Web Tension Between Inking Stations of a Multicolor Press
US20090293746A1 (en) * 2007-04-10 2009-12-03 Stephan Schultze Method for operating a printing press
US20100139511A1 (en) * 2007-05-25 2010-06-10 Kba-Giori S.A. Intaglio Printing Press Systems for Recto-Verso Intaglio-Printing of Sheets for the Production of Banknotes and Like Securities
US20090120990A1 (en) * 2007-11-09 2009-05-14 Holger Schnabel Method for adjusting the web tension of a processing machine
US20090145943A1 (en) * 2007-12-07 2009-06-11 Holger Schnabel Method for the axle correction of a processing machine, and a processing machine
US20110252989A1 (en) * 2008-10-27 2011-10-20 Robert Bosch Gmbh Automatic Axis Correction Method for Use in a Processing Machine for Processing a Product Web
US20100269720A1 (en) * 2009-04-03 2010-10-28 Holger Schnabel Method for web tension adjustment
US20110246127A1 (en) * 2010-04-03 2011-10-06 Robert Bosch Gmbh Method for Determining at Least One Controller Parameter of a Dancer Position Control Element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150328879A1 (en) * 2014-05-19 2015-11-19 Matthias Hermann Regelsberger Precision registration in printing cylinder systems
US20190016111A1 (en) * 2017-07-17 2019-01-17 Heidelberger Druckmaschinen Ag Printing machine with a twin printing unit and method for operating such a printing machine
US10919289B2 (en) * 2017-07-17 2021-02-16 Heidelberger Druckmaschinen Ag Printing machine with a twin printing unit and method for operating such a printing machine

Also Published As

Publication number Publication date
CN103358686A (zh) 2013-10-23
DE102012013435A1 (de) 2013-10-10
CN103358686B (zh) 2016-08-10

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