EP1980394A2 - Corps tournant rotatif d'une presse - Google Patents

Corps tournant rotatif d'une presse Download PDF

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Publication number
EP1980394A2
EP1980394A2 EP20080154320 EP08154320A EP1980394A2 EP 1980394 A2 EP1980394 A2 EP 1980394A2 EP 20080154320 EP20080154320 EP 20080154320 EP 08154320 A EP08154320 A EP 08154320A EP 1980394 A2 EP1980394 A2 EP 1980394A2
Authority
EP
European Patent Office
Prior art keywords
rotary body
measuring
rotary
body according
driven
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Withdrawn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
EP20080154320
Other languages
German (de)
English (en)
Inventor
Karl Schäfer
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
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
Priority claimed from DE102007017941A external-priority patent/DE102007017941B4/de
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Priority to DE202008017420U priority Critical patent/DE202008017420U1/de
Publication of EP1980394A2 publication Critical patent/EP1980394A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/004—Electric or hydraulic features of drives
    • B41F13/0045—Electric driving devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices

Definitions

  • the invention relates to rotationally driven rotary body of a printing press according to claim 1 or 2.
  • the DE 103 27 218 A1 discloses a direct drive for a cylinder of a printing machine having a measuring system for detecting the rotational position, wherein a measuring ring on the pin of the cylinder and a sensor on an extension of a Legergeophuses is arranged.
  • a rotationally driven component of a printing press is designed with a magnetic rotary encoder, wherein a dividing ring with a drive shaft rotatably and a scanning head is connected to a fixed bearing element.
  • the DE 10 2005 047 661 A1 shows in an embodiment, a coaxial with the cylinder on a side facing away from the cylinder side of the side frame drive motor whose angular position sensor is arranged on the cylinder-remote side of the drive motor.
  • Another embodiment which has an angular position detecting sensor in a cylinder-proximate end of a motor housing can be mounted on a bushing according to the former example.
  • the DE 197 55 487 A1 discloses a measuring system for the exact measurement of the angular position a print carrier body, wherein in one embodiment, a dividing structure is generated on the circumference of a drum-shaped graduation carrier by alternating regions of different magnetization or is.
  • EP 1 129 847 A1 is a drive for cylinders of a printing machine disclosed, wherein the cylinder is rotatably mounted in a side frame, not shown, and is driven by a linear motor of disk-shaped rotor and segment-like stator.
  • the rotor carries a ring of markings, which together with an optical or capacitive sensor form an angle incremental encoder.
  • a disc is formed on the front side with one or more rows of magnetic zones.
  • the frontal surfaces may be provided with a magnetic film.
  • a drum is formed on its peripheral surface equidistant with spaced magnetic zones.
  • the magnetic zones are deployed on a flat object to be moved.
  • the invention has for its object to provide rotationally driven rotary body of a printing press.
  • the achievable with the present invention consist in particular that a torsionally rigid, yet easy to maintain or handle and very accurate system of rotary body, drive motor and encoder is provided.
  • the system is designed so that in each Rotary position or at least after passing through a fraction of a revolution, the absolute position can be determined.
  • These are - one or more parts - two, z. B. arranged in the axial direction side by side, measuring scales whose period lengths differ from each other.
  • the period lengths preferably deviate from one another in such a way that - comparable to the type of a vernier - there is only a single point for exactly this relative position for each specific relative position of the two measuring graduations in the circumferential direction in the full 360 °.
  • This embodiment is particularly advantageous for the magnetic interaction based systems, but may also be independently applied to optical systems or other angular position measurement systems.
  • measuring tracks in the axial direction of the rotary body are designed such that they are insensitive to an axial movement - eg. B. at side register settings (i.e., lateral positioning) of the rotating body - by at least certain distances (eg., At least ⁇ 1 mm, advantageously ⁇ 1.5 mm, from a middle position out - is (see below).
  • the senor of the rotary encoder is arranged such that it from an outside, d. H. a side remote from the rotary body, a rotary body supporting side frame is accessible.
  • the measuring standard which cooperates with the sensor is advantageously arranged in the axial direction of the rotary body on a shaft between a radial bearing rotatably supporting the rotary body and the drive motor. This reduces the risk of torsional errors, such as might occur when the sensor is located at the rotor distal end of the motor.
  • the rotary bearing supporting radial bearing is arranged as close to the rotary body.
  • the radial bearing (or at least one bearing point between a pivot pin and bearing) is preferably arranged on the inside of the side frame such that it is in Direction towards the rotary body out of the alignment of the side frame protrudes. The resulting reduced vibration reduces measurement errors that can arise due to otherwise varying distances between the material measure and the sensor.
  • the rotary encoder is not formed as a one-piece, rotor and stator in a common housing exhibiting encoder but has at least one rotatably connected to the rotating body measuring scale and a sensor, which is - if necessary, apart from possible common positioning movements with the rotating body arranged substantially fixed to the frame , Rotor and stator of the encoder, d. H. Measuring standard and sensor, are not stored directly against each other.
  • rotary body for. B. as a printing cylinder, movably mounted for the purpose of distance variability to another rotary body in a radial direction.
  • a bearing block receiving the radial bearing can then be the pivotable part of an eccentric bearing or else preferably a linearly movable bearing block in a linear bearing.
  • the senor is preferably indirectly or directly rigidly connected to the bearing block and movable together with this.
  • the sensor follows radial movements of the rotating body and connected with this material measure.
  • a direct drive ie a motor shaft of the drive motor arranged substantially coaxially to the axis of rotation of the rotary body and the latter at least torsionally rigid, in particular rigid but possibly releasably connected.
  • the rotor is rotatably, but in the axial direction - z. B. depending on the interaction of the magnetic forces between the rotor and stator - relative to the motor shaft movably mounted within certain limits.
  • the rotary encoder is advantageously designed as a system based on magnetic interaction between a magnetic or at least magnetically interacting material measure and a magnetic-field-sensitive sensor.
  • the magnetic interaction based system can be either-such.
  • the sensor is preferably simultaneously designed to generate a defined magnetic field on the one hand and to detect the change in magnetic field influenced by the material measure, so that the material measure has different zones in the circumferential direction magnetic resistance.
  • the formed in a special advantageous embodiment of a form of cylinder rotary body this is - within certain limits such.
  • B. at least by an amount ⁇ of ⁇ 1 mm, advantageously ⁇ 1.5 mm - mounted in the axial direction relative to the side frame movable.
  • the rotary encoder - from material measure and sensor - is formed in this case such that dimensional standard and sensor overlap sufficiently in the axial direction in the entire allowable adjustment range of the forme cylinder. Ie. either the material measure or the sensor have z.
  • Fig. 1 shows a rotary body 01 of a rotary printing machine, in particular a web-fed rotary printing press, in whose rotation at least its angular velocity, but in particular its angular position plays a significant role and therefore must be known as accurately as possible.
  • a rotary body 01 can, in principle, be any rotating component of the printing press which is to be driven synchronously (or deviated in a defined manner) with respect to its peripheral speed and / or angular position with one or more other components driven in rotation by mechanically independent drive motors.
  • the rotating body 01 may, for. B.
  • a cylinder of a folding unit not shown, a substrate-conveying roller, a roller or a cylinder of an inking unit, or preferably a printing cylinder 01, z.
  • a printing cylinder 01 rotary body 01 is rotatably supported on both sides with its pin 02 via radial bearings 03 on side frames 04.
  • the frame-fixed part of the radial bearing 03 can in this case be firmly connected to the side frame 04, or, as shown, be integrated in a bearing block 07 a bearing unit 06, which allows movement of the radial bearing 03 and thus of the rotating body 01 in the radial direction.
  • the bearing unit 06 linear bearing 08 between which the radial bearing 03 having position block 07 (and with this also the rotating body 01) along a linear travel is movable.
  • the bearing block 07 may be part of an eccentric bearing, which is movable by pivoting a bearing ring in the radial direction.
  • the bearing of the rotary body 01 or its pin 02 is arranged on the side frame 04 in such a way that the radial bearing 03 projects out of alignment with the side frame 04 in the direction of the rotary body, ie. H. a bearing point nearest to the rotary body 01 of the pin 02 in the radial bearing 03 is arranged in the clear space between the inner wall of the side frame 04 and the end face of the rotary body 01, and thus close to the rotary body 01. This reduces the effects of bending vibrations in the drive train.
  • the radial bearing 02 receiving bearing unit 06 is therefore attached to the inside of the side frame 04.
  • a non-rotatable connection 09 for example a clamping seat such. B. a clamping ring, in the rotating body 01 coaxial arrangement a shaft 11, z. B. a cylinder-near end of a motor shaft 11 projecting out of the drive motor 12.
  • the drive motor 12 is preferably arranged coaxially with the rotary body 01. Between pin 02 and motor shaft 11 and a further shaft piece can be interposed in rotation.
  • the drive motor 12 is preferably associated with only one rotary body 01, in particular printing cylinder 01, and has no mechanical connection to another rotary body to be driven, in particular other printing cylinder or inking unit on.
  • the motor shaft 11 is surrounded at least on a portion of a rotor 13 which is rotatably connected to the motor shaft 11.
  • Motor shaft 11 and rotor 13 can be firmly connected to each other in one embodiment both in the circumferential direction and in the axial direction ( Fig. 3 ) or even be executed as a component.
  • the rotationally fixed connection between the motor shaft 11 and rotor 13 in the axial direction "soft" running, ie motor shaft 11 and rotor 13 are at least slightly mutually movable in the axial direction ( Fig. 1 and Fig. 2 ).
  • this is designed as a permanent-magnet-excited motor, in particular a synchronous motor, and has permanent magnets 16 on its rotor 13.
  • stator 17 is preferably fastened to the movable bearing block 07 and thus carried along with it when the rotary body 01 moves.
  • the stator 17 can be fixed to a holder 18 passing through an opening of the side frame 04, e.g. B. a socket, in particular collar bushing, which is fastened with its other end to the bearing block 07.
  • An angular position detecting rotary encoder 19, in particular absolute value encoder, is preferably designed in several parts.
  • a material measure 21 or a component 22 carrying a material measure 21 and the sensor 23 scanning the material measure 21 are not integrated in a prefabricated, self-contained component, but are designed to be individually mountable.
  • the measuring standard 21 carrying component 22 may be formed, for example, as a band-shaped strip of material or as a ring. In both cases, this is or is rotationally fixedly connected to a rotating body-fixed component, ie to the rotary body 01 itself, its journal 02, or a rotatable component (eg shaft or motor shaft 11) of the drive train.
  • the rotary encoder 19 or the material measure 21 in the region of the drive train (02, 09, 11) between the radial bearing 03 and the drive motor 12 on the pin 02, a pin or coaxial shaft or motor shaft 11 is arranged.
  • Particularly advantageous is the arrangement of the rotary encoder 19 and the measuring graduation 21 in the region of the drive train in an accessible area of the frame outside, z. B. between the side frame 04 and the drive motor 12 (Here, for example, as the rotary body near the end of the drive motor 19 in approximately the rotary body near the end of the rotor 13 or a rotor 13 and stator 17 surrounding housing considered).
  • the material measure 21 can also be used as an optical system, ie. H. one through an optical sensor 23, for. B. a photodetector, recognizable material measure be formed.
  • a magnetic field-based measuring method is advantageous.
  • Fig. 1 and 2 shows a schematically represented material measure 21 (or material measures 21, 21) on a scale 21 or material measure 21; 21 supporting annular component 22.
  • the sensor 23 is preferably designed as a magnetic-field-sensitive sensor 23.
  • This magnetic-field-sensitive sensor 23 preferably serves both as a source of a magnetic field-in particular an alternating magnetic field-and as a detector of the magnetic field, which detects the signals generated by the source (eg, conductor windings) and changed by feedback with the material measure.
  • a source of a magnetic field-in particular an alternating magnetic field-and as a detector of the magnetic field, which detects the signals generated by the source (eg, conductor windings) and changed by feedback with the material measure.
  • the material measure 21 (21 ') is according to the example of Fig. 4 advantageously formed on a ring having at least one measuring track 27 (27 '), the pitch marks 25 at defined intervals, here as a varying magnetic reluctance ("magnetic resistance"), z. B. by a certain periodic texture has.
  • These division marks 25 are here z. B. formed as periodically with a length of a division period L1, short: period length L1, arranged recesses 25 in an at least slightly magnetically interacting material.
  • This measuring track 27 (27 ') is scanned by the magnetic field-sensitive sensor 23.
  • the recess 25 thus provides z. A "dip" in magnetic conductivity.
  • the layer having the periodic texture or the periodic pattern in the reluctance the ring is preferably by a cover 26, for. As a metal strip, protected from the outside.
  • a texture or pattern is shown only schematically at long intervals.
  • the distances of two identical phases of adjacent periods eg. B. between two right flanks or between two left flanks of the two adjacent recesses 25 (pitch marks 25), so the period length L1, less than 10 mm, in particular at most 5 mm.
  • the group of in a same measuring track 27; 27 'arranged in direct succession graduation periods of the same period length L1 (L2) and the equidistantly arranged division marks 25 form a kind of scale 28 (28') of a scale defined by the period length L1 (L2).
  • the angular position detecting encoder 19 is formed in the manner of absolute value encoder 19 that not only in a single specific angular position, but in any angular position -. B. by slight turning - an absolute position can be determined.
  • at least two measuring tracks 27; 27 ' e.g. in the axial direction next to each other, each with at least one measuring scale 21; 21 'arranged whose periods lengths L1, L2, and thus their scales 28; 28 ', differ from each other.
  • the period lengths differ from one another such that - comparable to the type of a vernier - for each specific relative position of the two material standards 21; 21 'viewed in the circumferential direction in the full 360 ° each only a few place for exactly this special relative position exists.
  • these measuring scales 21; 21 'scanning probe can as two separate, each having a sensor 23; 23 'having measuring heads, or advantageously as an integrated, both tracks scanning probe with two sensors 23; 23 '(one for each track) may be formed.
  • the second track is not a track having a singular zero point signal but a second track having a plurality of periods, e.g. B. with a total of more than 100 graduation periods (a same or different period lengths, see below) to understand.
  • the scale carrying component 22 on its circumference z. B. a layer of magnetizable material, for. B. containing ferrite, which is magnetized at defined intervals or magnetized and formed by this embossed "magnetic pattern", in particular a defined magnetic division, in the circumferential direction of the material measure 21.
  • the pole width of individual dividing sections advantageously have a width of ⁇ 6 mm, in particular ⁇ 3 mm, in the circumferential direction.
  • two such mecanicver stresses 21; 21 'with different period lengths L1, L2 provided in the above or below genanter way.
  • the execution of the absolute value encoder 19 with two measuring scales 21; 21 'different period lengths has - in contrast to only an additional zero or reference track - the advantage that after a standstill of the rotating body an absolute position can be determined without first having to go through the usual reference mark. This is particularly important for web-fed rotary printing presses because the components that may need to be driven individually are connected to one another via the band-shaped material.
  • one of the tracks 27; 27 ', z. B. the second track 27 ' in several (eg n) circumferential or angular sections n scales 28'.1;28'.2 ... 28'.n, z. Eg n subscales 28'.1;28'.2 ... 28'.n, with each other and the other, z. B. the first, track different pitches or period lengths L2.1; L2.2; ... L2.n on.
  • the bar or marker distances are preferably equidistant, ie with the same period length L2.1; L2.2; ... L2.n executed. Due to the different line spacings (period lengths L2.1, L2.2, ... L2.n) of the scales 28'.1;28'.2 ...
  • n and the scale 28 of the first track are each comparable in their mode of operation with the type of vernier, ie, in such an embodiment, there are n subscales one behind the other on n circumferential or angular sections with each other and with the scale 28 of the other Track of different line distances or period lengths L2.1, L2.2 ...
  • L2.n; L1 (L2.1 ⁇ L2.2 ⁇ ... L2.n ⁇ L1) provided. Unlike the execution after Fig. 4 , this being a "vernier" z. B. extends over the entire circumference and thereby requires an extremely high spatial resolution or cuts in accuracy caused here, the desired phase shifts between the scale of the first track and the scales of the second track can be made larger and therefore easier and / or to evaluate more accurately ,
  • FIG. 6 schematically illustrated simplified embodiment with multiple scales 28'.1;28'.2 ... 28'.n have the scales 28'.1;28'.2 ... 28'.n of the second track 27 'in each case only one graduation period, ie in each case only a section between two successive markings 25' (eg recesses or points of the same magnetization or optically evaluable bars) on. Ie it is z. B. in such an embodiment on n circumferential or angular sections one behind the other n scales 28'.1;28'.2 ... 28'.n each with each other and to the other track different bar spacing or period lengths L2.1; L2.2 ...
  • each scale of the second track comprises only one period.
  • n different scales 28'.1;28'.2 ... 28'.n be provided on the circumference of the respective measuring track 27 '.
  • the successive scales 28'.1;28'.2 ... 28'.n chosen so that consecutive pairs of scales 28'.1;28'.2 ... 28'.n each covering approximately the same angular range.
  • a length of the first scale 28.1 of the multi-part track 27 ' corresponds, for example, to a peripheral section of a graduation periods of the markings 25 arranged equidistantly around the circumference having the first track 27.
  • the following scale 28.2 extends as shown for.
  • the first track z. B. 1000 to 1400 in particular about 1200 equidistant spaced markers 25 or a corresponding number of circumferences of markers 25 with a period length L1 of 0.5 mm on the circumference.
  • the number a can then be 25 to 45, advantageously about 30.
  • the sweep of at most 20 °, in particular of only 10 ° would be required.
  • the senor 23 (one-piece, multiple or integrated) -. B. in a recess of the holder 18 or between the holder 18 and the stator 17 - viewed in the axial direction "at the height" of the measuring scale 21-bearing annulus 22 arranged such that its measuring head can scan the measuring scale.
  • the recess is preferably designed such that the sensor 23 can be removed and / or adjusted in the radial direction relative to the drive train.
  • z. B. formed as a forme cylinder 01, rotating body 01, this z. B. at least by an amount ⁇ of ⁇ 1 mm in the axial direction relative to the side frame to be movably mounted.
  • the rotary encoder is designed in such a way that the measuring scale 21 and the sensor 23 sufficiently overlap in the axial direction in the entire permitted adjustment range of the forme cylinder in such a way that no functional restriction due to the axial relative movement results.
  • the measuring scale 21 has z. B. a greater by at least the amount ⁇ effective length in the axial direction than the sensor 23 or vice versa.
  • the sensor may advantageously be arranged to be adjustable in the recess in the radial direction to the axis of rotation at a distance from the material measure 21.
  • the sensor 23 and the two sensors 23; 23 'having arranged measuring head fixed to the frame, d. H. be attached directly or indirectly to the side frame 04.
  • the sensor 23 (or two sensors 23, 23 'having) measuring head is preferably directly or indirectly fixedly connected to the movable bearing block 07 and thus carried along with the rotating body 01 with this.
  • the two Messspruren 27; 27 ' can also be arranged on the front side on a measuring ring at different radii, in which case again one of the measuring tracks completely circumferentially equidistant marks 25 and the other measuring track 27' in several parts with several scales 28'.1;28'.2 ... 28'.n is executed as described above.
  • the scales 28'.1;28'.2 ... 28'.n can then each several mark 25 'and thus several graduation periods or as based on Fig. 6 each having a single graduation period.
  • the two tracks 27; 27 'then run z. B. on circular lines different radii on the face of a measuring wheel or measuring ring.
  • the two sensors 23; 23 ' are then directed to the end faces of this measuring wheel or measuring ring.
EP20080154320 2007-04-13 2008-04-10 Corps tournant rotatif d'une presse Withdrawn EP1980394A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE202008017420U DE202008017420U1 (de) 2007-04-13 2008-04-10 Rotierend angetriebene Drehkörper einer Druckmaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007017941A DE102007017941B4 (de) 2007-04-13 2007-04-13 Rotierend angetriebener Drehkörper einer Druckmaschine
DE102007025305 2007-05-30

Publications (1)

Publication Number Publication Date
EP1980394A2 true EP1980394A2 (fr) 2008-10-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080154320 Withdrawn EP1980394A2 (fr) 2007-04-13 2008-04-10 Corps tournant rotatif d'une presse

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EP (1) EP1980394A2 (fr)
DE (1) DE202008017420U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023227486A1 (fr) * 2022-05-21 2023-11-30 Flux Gmbh Agencement à voies multiples pour systèmes de mesure de position linéaire ou angulaire

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2205406A (en) 1987-06-04 1988-12-07 Spectrol Reliance Ltd Encoder apparatus
EP0693374A1 (fr) 1993-07-08 1996-01-24 Baumüller Nürnberg Gmbh Dispositif d'entraînement électrique en particulier pour machines à imprimer
DE19755487A1 (de) 1997-12-13 1999-06-17 Heidenhain Gmbh Dr Johannes Verfahren zur Herstellung einer Teilungsstruktur
EP1129847A1 (fr) 2000-03-03 2001-09-05 Fischer & Krecke Gmbh & Co. Entraínement pour cylindres d'une machine d'impression
DE10327218A1 (de) 2003-06-17 2005-01-13 Ina-Schaeffler Kg Direktantrieb für einen Zylinder einer Druckmaschine
DE102005047661A1 (de) 2005-06-23 2007-01-04 Koenig & Bauer Ag Antrieb rotierender Bauteile einer Druckmaschine
DE102005042932A1 (de) 2005-09-09 2007-03-22 Man Roland Druckmaschinen Ag Druckmaschine, insbesondere Rollendruckmaschine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2205406A (en) 1987-06-04 1988-12-07 Spectrol Reliance Ltd Encoder apparatus
EP0693374A1 (fr) 1993-07-08 1996-01-24 Baumüller Nürnberg Gmbh Dispositif d'entraînement électrique en particulier pour machines à imprimer
DE19755487A1 (de) 1997-12-13 1999-06-17 Heidenhain Gmbh Dr Johannes Verfahren zur Herstellung einer Teilungsstruktur
EP1129847A1 (fr) 2000-03-03 2001-09-05 Fischer & Krecke Gmbh & Co. Entraínement pour cylindres d'une machine d'impression
DE10327218A1 (de) 2003-06-17 2005-01-13 Ina-Schaeffler Kg Direktantrieb für einen Zylinder einer Druckmaschine
DE102005047661A1 (de) 2005-06-23 2007-01-04 Koenig & Bauer Ag Antrieb rotierender Bauteile einer Druckmaschine
DE102005042932A1 (de) 2005-09-09 2007-03-22 Man Roland Druckmaschinen Ag Druckmaschine, insbesondere Rollendruckmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023227486A1 (fr) * 2022-05-21 2023-11-30 Flux Gmbh Agencement à voies multiples pour systèmes de mesure de position linéaire ou angulaire

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