EP1619154A2 - Dispositif pour la synchronisation d'un cycle d'opération d'un dispositif avec une séquence de mouvement d'un matériau se déplaçant selon une direction donnée et méthode pourl'utilisation de ce dispositif - Google Patents

Dispositif pour la synchronisation d'un cycle d'opération d'un dispositif avec une séquence de mouvement d'un matériau se déplaçant selon une direction donnée et méthode pourl'utilisation de ce dispositif Download PDF

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Publication number
EP1619154A2
EP1619154A2 EP05106286A EP05106286A EP1619154A2 EP 1619154 A2 EP1619154 A2 EP 1619154A2 EP 05106286 A EP05106286 A EP 05106286A EP 05106286 A EP05106286 A EP 05106286A EP 1619154 A2 EP1619154 A2 EP 1619154A2
Authority
EP
European Patent Office
Prior art keywords
image sensor
image
evaluation unit
distance
illumination source
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
Application number
EP05106286A
Other languages
German (de)
English (en)
Other versions
EP1619154A3 (fr
EP1619154B1 (fr
Inventor
Bernd Stöber
Volker Lohweg
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
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1619154A2 publication Critical patent/EP1619154A2/fr
Publication of EP1619154A3 publication Critical patent/EP1619154A3/fr
Application granted granted Critical
Publication of EP1619154B1 publication Critical patent/EP1619154B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/025—Registering 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
    • B41F33/0081—Devices for scanning register marks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/50—Marks on printed material
    • B41P2233/52—Marks on printed material for registering
    • 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
    • B65H2511/135—Surface texture; e.g. roughness
    • 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
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B65H2511/512—Marks, e.g. invisible to the human eye; Patterns
    • 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
    • B65H2513/50—Timing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/41—Photoelectric detectors
    • B65H2553/414—Photoelectric detectors involving receptor receiving light reflected by a reflecting surface and emitted by a separate emitter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/41—Photoelectric detectors
    • B65H2553/416—Array arrangement, i.e. row of emitters or detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/42—Cameras
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/45—Scanning means

Definitions

  • the invention relates to a device for synchronizing a working cycle of a device with a sequence of movement of a moving material along a movement path according to the preamble of claim 1 and a method of using this device according to the preamble of claim 75.
  • z. B. a web-fed printing press or a sheet-fed press, especially in an offset printing press
  • the problem arises that with a movement of a moving through the printing press substrate z. B. involved in the manufacturing process of a printed product to be produced by the printing product or to monitor the printing process for quality control or to support a printing device of the printing press to synchronize or at least to control.
  • the movement of the printing material through the printing press in the case of a web-like configuration of the printing material z. B. at a speed between 10 m / s and 12 m / s or in the case of an arcuate configuration of the substrate z. B. between 15,000 sheets / h and 18,000 sheets / h or in each case with even greater speed values.
  • a printing process monitoring device may be a sensor system, wherein the sensor system z. B. is formed as an imaging system, wherein the imaging system z. B. has a line scan camera, wherein the line scan camera with at least one line of photosensitive sensor elements directed transversely to the transport direction of the printing material at least from a part of a surface of the Substrate line by line takes a picture.
  • the image lines taken sequentially by the line scan camera only lead to a meaningful image of the surface of the printing material if the individual recorded image lines always correlate with traveled distances of the same length directed by the moving printing material in its transport direction, ie if the individual recorded image lines follow one another as equidistantly as possible and map in their juxtaposition as completely as possible at least part of the surface of the printing material.
  • To synchronize a line scan camera with the movement of the printing material it is necessary that the signal synchronizing the process of image recording already after very short distances traveled by the substrate and thus after a very short time, if z. B. the same applied to the substrate printed image should be at least almost completely imaged by a sequence of image lines.
  • the length of such a route is usually measured in the range of significantly less than 1 mm.
  • An involved in the manufacturing process of the printed matter device may alternatively or additionally z. B. also be a perforator, in particular a laser perforator, with each of which a perforation is introduced into the substrate to the division in constant sections, which in turn leads to good results, if the perforator is activated at precisely such times, after the substrate each distance of equal length have been covered.
  • a perforator in particular a laser perforator
  • a signal with which the device to be synchronized with the movement of the printing material can be synchronized, z. B. be obtained by that with a rotary body of the printing machine, in particular a printing material-carrying cylinder or a printing material-carrying roller, a rotary encoder is connected, wherein the rotary encoder in response to the rotation of the rotary body provides a correlated with a distance traveled by the printing material signal, the signal from a control device for controlling the synchronizing device is used.
  • a device is z.
  • a rotary encoder provides erroneous results as soon as a slip occurs between the surface of the printing material and the lateral surface of the rotary body, which can not be excluded in particular if the printing material wraps around the rotary body only partially, but in the manufacturing process of the printed product in the printing press Is the rule. Also, the rotating body may wear out in the manufacturing process of the printed product, resulting in a change in its circumferential length. For these reasons, it is not guaranteed that the signal generated by the encoder continued reliable with the actual distance traveled by the substrate with the z. B. correlated to the synchronization of a line scan camera or a perforator required accuracy.
  • a rotary encoder also fails z. B. on a sheet-fed press, in which the substrate is transported after passing through the last printing unit by a guided on a chain system gripper system, because this predominantly does not provide a suitable rotational body having transport path virtually no way to arrange the encoder.
  • the generation of the signal required for synchronization should also z. B. be possible for a stamped by a pure linear motion movement of the printing material.
  • JP 10038901 A has proposed a non-contact speed measuring device, wherein a CCD area image sensor of a portion of a web of material focused by a focused on the surface of the web Lens takes an image and an image processor evaluates an output signal of the image sensor in a high-pass process with respect to a speed of the material web.
  • control or even synchronization of a device operating with high precision as a function of a distance traveled by the printing material is neither possible with the speed measuring device described in JP 10038901 A, nor is there any indication of this.
  • the present invention contemplates that the basis of synchronization of a high precision device with a path traveled by the substrate is a real time accurate determination of the distance traveled along the path of movement of the substrate.
  • the determination of the length of the distance must be carried out very quickly and virtually without delay in view of the high speed at which the movement of the printing material through the printing press.
  • DE 35 02 406 A1 discloses a method and a device for the continuous, non-contact determination of the length of an undivided, moving body, in particular a continuous casting, with optically specific surface structure, each with an optical device at two different times a snapshot of the moved body is recorded and stored, wherein the two snapshots coincide with each other except for an offset caused by the movement of the body, wherein the offset of a partial length of the body is determined, this determination is cyclically at high speed and wherein the measurement signal from a computing unit for controlling one of these length measuring device downstream cutting device can be used.
  • the invention has for its object to provide a device for synchronizing a working cycle of a device with a movement of a moving material along a movement path and a method for using this device, wherein the device, the determination of a distance traveled by the substrate at high speed distance in real time performed with high accuracy.
  • a distance traveled by the material along a path of movement can be reliably determined with high accuracy even for a very short length of the path even when the material is at a very high speed emotional.
  • the determination of the distance covered by the material is non-contact and thus wear-free, both on a plane and on a curved surface of the material.
  • a signal is generated in the preferred embodiment, for. B. involved in the manufacturing process of the printing product to be produced by the printing press or to monitor the printing process or to convey the printing material or any other high-precision device of the printing press with the distance covered by the material or at least to control.
  • the proposed device can be realized inexpensively.
  • a lighting device is provided which favors the measurement made by the image sensor by a change in contrast or a contrast enhancement.
  • a correction signal can be generated either to correct the movement of the material or to track an image taken by the device.
  • the device for determining a distance S traveled by a moving material 01 along a movement path B has an image sensor 06, wherein the material 01 is a surface 02 parallel to the movement path B, that is, H. surface 02 having at least one structure 03 lying in the plane of trajectory B, wherein image sensor 06 images the same structure 03 in an image at at least two discrete successive points in time at the same magnification and at the same time correlating image data 18 with the respective image an evaluation unit 07 leads, wherein the image data 18 generated at different times in relation to each other due to the movement of the material 01 have a shift of the structure 03.
  • the evaluation unit 07 preferably calculates mathematically from the displacement of the structure 03, taking into account the magnification of the distance traveled by the material 01 distance S.
  • Known, fixed, d. H. immutable mechanical relationships z. B. in the pixel arrangement of the image sensor 06 can be used in the evaluation of the image data 18 to quantify the distance traveled by the material 01 distance S as a mechanical reference or scale.
  • the evaluation unit 07 sets, after a distance S traveled by the material 01, preferably at distances S of the same length traveled by the material 01, a signal 08 for the synchronization of an operation to be synchronized with the distance S traveled by the material 01.
  • the remote from the evaluation unit 07 and optionally processed signal 08 thus has the effect of a clock 09.
  • the at least one device 12 is thus a device 12 operating in a work cycle to be synchronized, ie, the workflow of this Device 12 is subdivided into a multiplicity of recurring sections, wherein a length or duration of these sections is to be matched to the movement sequence of the material 01 moved along a movement path B. For example, exactly one working cycle of the device 12 takes place after each distance S traveled by the material 01.
  • the at least one device 12 is z. B. as a material 01 in its processing process monitoring, processing or conveying device 12 is formed.
  • the device 12 is designed as a line scan camera 12 or as a perforator 12, preferably as a laser perforator 12.
  • the signal 11 provided by the clock 09 may also be used to synchronize a plurality of devices 12 with the distance S traveled by the material 01 of the material 01 moved along the path of movement B, e.g. B. a line scan camera 12 and a perforator 12 or another the material 01 in its processing process monitoring, processing or conveying device 12th
  • the material 01 is preferably a substrate 01, the z. B. in the form of a web of material 01, z. B. a paper web 01 or a film 01, or a sheet 01 or more successively to be printed sheet 01 is formed.
  • the movement path B of the material 01 indicated in FIG. 1 by an arrow can run in a straight line or curved along a curved line.
  • the movement path B of the material 01 runs within a printing press operating in an offset printing method, wherein the movement path B can also run along at least part of a lateral surface of a roller arranged in the printing press or of a cylinder arranged there.
  • the surface 02 of the material 01 is flat or curved, in particular convex.
  • the structure 03 of the material 01 preferably consists of a structure consisting of microscopic parts, for. B. of fibers of the printing material 01, in particular of paper fibers, from a on the surface 02 of the material 01 applied one or more layer coating, for. B. from an applied printing ink or from a plurality successively printed on one another printing inks, or from an application of the material 01.
  • the structure 03 of the material 01 preferably forms from the surface 02 of the material 01 exalted protruding or deepened in it relief.
  • the image sensor 06 is z. B. as a surface image sensor 06, preferably formed as a CCD chip having surface camera 06.
  • the image sensor 06 is designed, in particular, as an area camera 06 with a partially readable CMOS image sensor, wherein an image field of the area camera 06 can be adjusted, in particular, limited in size.
  • the size of the image field of the area camera 06 can be adapted in particular to a refresh rate of the area camera 06.
  • the image field of the image sensor 06 can therefore have different operating positions.
  • the projected onto the image field of the image sensor 06 part 14 of the surface 02 of the material 01 determined for the preferably stationary image sensor 06 a scanning 14.
  • the at least one device for determining a distance S traveled by the moving material 01 along the movement path B thus operates in any case with respect to the surface 02 of the material 01 without contact.
  • the distance A13 measures in the range between 10 mm and 1,000 mm, preferably between 50 mm and 400 mm.
  • the optical system 13 forms the part 14 of the surface 02 of the material 01, in particular the structure 03 contained in this part 14 of the surface 02 of the material 01, at a plurality of successive discrete points in time at an identical magnification on the image field of the image sensor 06 , Due to the small size of the structure 03, the magnification is selected such that the image of the structure 03 on the image field of the image sensor 06 on a scale of 1: 1 or even in the form of an enlargement.
  • the image sensor 06 has a suitable resolution with regard to its pixels, at least in its image field.
  • the optics 13 is z. B. formed as a telecentric lens, so that a z. B.
  • the image of the structure 03 on the image field of the image sensor 06 is not possible or only very slightly changed.
  • the use of a telecentric optics 13 is advantageous because a telecentric optics 13 a slight distance variation, as they are in the transport of very thin, soft material 01 z. B. may occur due to vibrations and / or wave formation compensated, which is why z. B. caused by vibrations and / or wave formation distance variations do not immediately lead to a negative impact on the measurement result.
  • the use of a telecentric optical system 13 also enables an error-free detection of the surface 02 of a material 01 guided along a curved or curved trajectory B.
  • the use of a telecentric optical system 13 saves tracking of the measuring distance, ie in particular of the distance A13. Because of the distance tolerance of the telecentric optics 13 is also a recalibration z. B. the image data 18 of the image sensor 06 evaluating evaluating unit 07 is not required.
  • the evaluation unit 07 determines the distance S traveled by the material 01.
  • a lateral displacement to the movement path B of the material 01 can also be ascertained, in that the evaluation unit 07 determines the direction of the displacement and optionally the extent of the lateral offset of the structure 03 detected from the displacement.
  • the evaluation unit 07 can provide a further signal 19, optionally after a corresponding preparation or amplification, available, which correlates with the lateral offset of the structure 03 and thus also with the structure 03 having stationary material 01, wherein this signal 19 thereto it is possible to use at least one further device, in particular the high precision device 12.
  • the two-dimensional image field of the image sensor 06 can also be used to produce a precise, always similar image of the structure 03 by a lateral movement of the material 01 in the evaluating unit 07 evaluating the image data 18 of the image sensor 06 by applying a correction method, for. B. an image processing method, is computationally compensated, so that made by the evaluation unit 07 determination of the distance traveled by the material 01 distance S unaffected by the sideways movement of the material 01 takes place.
  • a Sideways movement of the material 01 may, for. B. be the result of tolerance-related, incorrectly adjusted, worn and / or even damaged guide elements for guiding the material 01.
  • An applicable correction method can provide for defining or redefining a start pixel of each image line of the image sensor 06 depending on the signal 19 correlating with the lateral offset of the structure 03, as soon as the signal 19 reaches a previously determined, e.g. B. reaches or exceeds the limit stored in the evaluation unit 07.
  • the signals required for the synchronization of the device 12 signals 08; 11 or the signal 19 required for controlling a device with respect to a lateral movement of the material 01 can therefore be provided in real time because the displacement of a structure 03 which does not change its shape along its displacement path can be evaluated quickly by the evaluation unit 07, wherein As already described, the displacement of image data 18 generated at two different points in time results in their relation to one another as a result of the movement of the material 01.
  • the structure 03 therefore remains unchanged in its shape at at least two different times at which the image sensor 06 images it.
  • the evaluation unit 07 After mapping the structure 03 on the image field of the image sensor 06 at a first time, the evaluation unit 07 only needs to determine which coordinates this now known structure 03 at a second time within the image field of the image sensor 06 and the change in the coordinates z. B. determine by a difference, the coordinates determine a position of at least a portion of the structure 03 within the image field of the image sensor 06.
  • the evaluation method applied by the evaluation unit 07 therefore requires that the image data 18 generated at at least two different times have a sufficient overlapping area with respect to the image field of the image sensor 06 having the structure 03, and that both image data 18 at least partially map the structure 03.
  • the image refresh rate of the image sensor 06 is preferably adapted to the speed of the moving material 01 or at least adaptable.
  • the distance S of the material 01 covered between two consecutive image recordings can have a limiting effect on the image refresh rate of the image sensor 06, because the successive image recordings must have the mentioned sufficient overlap area, so that the displacement of the structure 03 within the Image field of the image sensor 06 can be determined.
  • an intermediate clock can be determined reliably by interpolation or extrapolation from previous image recordings.
  • the proposed device accordingly has the particular advantages that it quickly determines the distance S traveled by the moving material 01 due to the low evaluation time due to the method, and is also capable of detecting and quantifying a displacement of only a very short length. Therefore, the proposed device can also be used to synchronize picture lines of a line scan camera 12.
  • the image repetition rate of the image sensor 06 is significantly higher than the line clock of the line camera 12.
  • the length of the displacement vector of the evaluation of the evaluation unit 07 to be evaluated displacement of the structure 03 is also extremely small, if covered by the moving material 01 between two images S distance in the field a local blur of the to be controlled by the evaluation unit 07 device 12 is located.
  • the scanning location 14 of the image sensor 06 ie the part 14 of the surface 02 of the material 01 projected onto the image field of the image sensor 06, as close as possible to the location at which a device 12 to be synchronized or at least to be controlled the material 01 acts.
  • the scanning 14 of the image sensor 06 z. B. cover the line-shaped Abtastspur a synchronized line camera 12 at least partially.
  • At least the scanning location 14 of the image sensor 06 illuminating illumination source 21 is provided, wherein the illumination source 21 z. B. as a constant light source 21 or as a flash light source 21 is executed.
  • the brightness of the illumination source 21 or its flash duration or optionally also the exposure time of the image field of the image sensor 06 are z. B. adapted to the particular nature of the surface 02 of the material 01 or at least customizable.
  • the light color of the illumination source 21 and the color sensitivity of the image field of the image sensor 06 are advantageously chosen such that they are outside of that of the line camera 12 for their Image capture used spectral range are to avoid mutual interference of line scan camera 12 and image sensor 06.
  • the image recording of the line camera 12 z. B. takes place in the visible spectrum, for the color sensitivity of the image field of the image sensor 06 and the adapted light color of the illumination source 21, the range z. B. the infrared or ultraviolet radiation can be used.
  • the illumination source 21 is also like the image sensor 06 associated optics 13 spaced from the surface 02 of the material 01, for. B. at a distance A21, wherein the distance A21 from a mechanically movable element, for. B. by a handling device of the printing press, in particular by a gripper system, if necessary can be traversed.
  • the distance A21 measures z. B. in the area between 30 mm and 200 mm, preferably between 80 mm and 140 mm.
  • the illumination source 21 is arranged to the surface 02 of the material 01 such that the structure 03 is highlighted on the surface 02 of the material 01 with the light emitted by the illumination source 21.
  • the illumination source 21 is arranged with its optical axis 22 at an angle ⁇ to the optical axis 16 of the optical system 13, wherein the angle ⁇ z. B. between 0 ° and 90 °, in particular between 45 ° and 90 °.
  • the light irradiated by the illumination source 21 along its optical axis 22 at the angle ⁇ onto the surface 02 of the material 01 then generates a shadow of the structure 03, whereby image contrasts are enhanced.
  • a solid angle ⁇ at which the illumination source 21 emits its light is preferably narrow and is z. Between 0.00006 sr and 0.05 sr.
  • the illumination source 21 may be advantageous, wherein the arrangements z. B. at a distance A21 of the illumination source 21 from the surface 02 of the material 01 or at the angle ⁇ , the illumination source 21 with its optical axis 22 to the optical axis 16 of the optics 13 occupy different.
  • Two different arrangements of the illumination source 21 are shown by way of example in FIG.
  • the evaluation unit 07 can control the operation and optionally also the operating position of the illumination source 21 with a signal 24 transmitted to a control device 23, the control device 23 in turn acting on the illumination source 21 with a corresponding signal 26.
  • FIGS. 2 to 4 show, with regard to the surface 02 of the material 01, different arrangements of the image sensor 06 and the illumination source 21 assigned to it can be provided.
  • a matte surface 02 of the material 01 and / or its structure 03 an arrangement according to FIG. 1 or 2 is advantageous, wherein the optical axis 16 of the optical system 13 with the surface 02 of the material 01 a Angle ⁇ of 90 ° and the angle ⁇ between the optical axis 16 of the optics 13 and the optical axis 22 of the illumination source 21 is selected to be greater than 45 °.
  • the light irradiated by the illumination source 21 onto the surface 02 of the material 01 then takes place as a grazing light.
  • a specular, highly reflective surface 02 of the material 01 and / or its structure 03 an arrangement according to FIG. 3 can lead to better results, wherein the incident on the surface 02 of the material 01 at an angle of incidence of 1 ⁇ 2 ⁇ light under a the Incident angle of 1 ⁇ 2 ⁇ at least almost corresponding angle of failure of also 1 ⁇ 2 ⁇ hits the image field of the image sensor 06, whereby at the pixels on the image field of the image sensor 06, a particularly high signal level is generated.
  • a reflective surface 27 does not necessarily have to be arranged parallel to the other surface 02 of the material 01, as indicated by a dashed line in FIG. 3 and a solder 28 orthogonal to it.
  • the arrangement of the image sensor 06 and its associated illumination source 21 is preferably determined by the orientation of the largest surface portion of the surface 27.
  • Figs. 1 and 4 show a device with several, z. B. two illumination sources 21, which can be selectively used.
  • the evaluation unit 07 controls z. B. the control device 23, whereby a switchover between the illumination sources 21 takes place.
  • the illumination sources 21 each have different angles ⁇ 1 with their respective optical axis 22; ⁇ 2 to the surface 02; 27 of the material 01 on.
  • the right in Fig. 4 illumination source 21 is preferably suitable for illuminating a shiny, reflective surface 02; 27, since with respect to the surface 02; 27 and the optical axis 16 of the image sensor 06 is arranged under the provision of incident angle equal to the angle of reflection, whereas the left in Fig. 4 illumination source 21 is more for illuminating a rough, matte Surface 02; 27 is suitable.
  • an evaluation of at least one image acquisition of the image sensor that is not required to generate the signal 08 can be performed Be used 06 that the proposed device automatically to a condition of the surface 02; 27 of the material 01 adapts. If the evaluation of at least one image acquisition of the image sensor 06 which is not required to generate the signal 08 results in the image of the structure 03 being overexposed or underexposed on the image field of the image sensor 06, the evaluation unit 07 can be used for example. B. adjust the brightness of the illumination source 21 or the flash duration or, optionally, alternatively, the exposure time of the image field of the image sensor 06 automatically.
  • the evaluation unit 07 can eg. B. switch between the multiple, controlled by her lighting sources 21 and one for the currently present surface 02; 27 of the material 01 bring more suitable illumination source 21 used, which thus for the currently present surface 02; 27 of the material 01 produces the highest image contrast for the structure 03 imaged on the image field of the image sensor 06.
  • This automatic adaptation of the proposed device is preferably carried out before the next required for generating the signal 08 image acquisition. Due to the automatic adaptation, the proposed device becomes a self-learning system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Reciprocating Conveyors (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
EP05106286A 2004-07-12 2005-07-11 Dispositif pour la synchronisation d'un cycle d'opération d'un dispositif avec une séquence de mouvement d'un matériau se déplaçant selon une direction donnée et méthode pourl'utilisation de ce dispositif Not-in-force EP1619154B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004033660A DE102004033660B4 (de) 2004-07-12 2004-07-12 Vorrichtung zur Ermittlung einer von einem bewegten Material entlang einer Bewegungsbahn zurückgelegten Strecke

Publications (3)

Publication Number Publication Date
EP1619154A2 true EP1619154A2 (fr) 2006-01-25
EP1619154A3 EP1619154A3 (fr) 2007-02-28
EP1619154B1 EP1619154B1 (fr) 2010-09-01

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EP05106286A Not-in-force EP1619154B1 (fr) 2004-07-12 2005-07-11 Dispositif pour la synchronisation d'un cycle d'opération d'un dispositif avec une séquence de mouvement d'un matériau se déplaçant selon une direction donnée et méthode pourl'utilisation de ce dispositif

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EP (1) EP1619154B1 (fr)
AT (1) ATE479621T1 (fr)
DE (2) DE102004033660B4 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2028144A3 (fr) * 2007-08-21 2009-11-18 Koenig & Bauer AG Dispositif de surveillance et/ou de réglage d'une bande en mouvement dans une imprimante rotative et procédé de surveillance d'une bande en mouvement
EP2269824A1 (fr) * 2009-07-01 2011-01-05 ELTROMAT GmbH Procédé et dispositif de surveillance de l'ajustement du traitement de matériaux en forme de bandes dans des installations
DE202010012725U1 (de) * 2010-09-16 2011-12-19 Emima Gmbh Ortsbestimmung eines bewegten Gegenstands

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012101310C5 (de) 2012-02-17 2014-09-04 Stephan Krebs Vorrichtung und Verfahren zur Druckbildkontrolle
DE102016220759A1 (de) * 2016-10-21 2018-04-26 Texmag Gmbh Vertriebsgesellschaft Verfahren und Vorrichtung zur Kompensation eines Materialbahnversatzes bei der Materialbahninspektion
DE102017213262B4 (de) * 2017-08-01 2022-09-22 Heidelberger Druckmaschinen Ag Bilderfassung mit bereichsweiser Bildauflösung

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DE3502406A1 (de) 1985-01-22 1986-07-24 Dr. Peter + Steinwender Technische Geräte GmbH, 8176 Waakirchen Verfahren und einrichtung zur kontinuierlichen, beruehrungslosen bestimmung der laenge eines ungeteilten, bewegten koerpers
JPH1038901A (ja) 1996-07-19 1998-02-13 Futec Inc 非接触速度計
US6715417B2 (en) 2000-10-13 2004-04-06 Dainippon Screen Mfg. Co., Ltd. Printing press equipped with color chart measuring apparatus

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GB9214664D0 (en) * 1992-07-10 1992-08-19 Wiggins Teape Group Ltd Watermark detection
DE4428156A1 (de) * 1994-08-09 1995-08-10 Siemens Nixdorf Inf Syst Verfahren und Vorrichtung zur Bestimmung der Geschwindigkeit eines Aufzeichnungsträgers
DE19631747A1 (de) * 1996-08-06 1997-09-11 Oce Printing Systems Gmbh Sensoreinrichtung zum Erfassen einer Markierung eines bewegten Endlos-Aufzeichnungsträgers in elektrofotografischen Druck- und Kopiereinrichtungen
SE9701911D0 (sv) * 1997-05-22 1997-05-22 Optronic Consult Ab Sätt och anordning för beröringsfri inmätning av förflyttning
US7130710B2 (en) * 2002-08-07 2006-10-31 Kimberly-Clark Worldwide, Inc. System and method for tracking and exploiting per station information from a multiple repeat manufacturing device
DE10338973B4 (de) * 2002-09-30 2013-01-31 Goss International Montataire S.A. Verfahren und Vorrichtung zur Störungserfassung beim Transport einer Materialbahn

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Publication number Priority date Publication date Assignee Title
DE3502406A1 (de) 1985-01-22 1986-07-24 Dr. Peter + Steinwender Technische Geräte GmbH, 8176 Waakirchen Verfahren und einrichtung zur kontinuierlichen, beruehrungslosen bestimmung der laenge eines ungeteilten, bewegten koerpers
JPH1038901A (ja) 1996-07-19 1998-02-13 Futec Inc 非接触速度計
US6715417B2 (en) 2000-10-13 2004-04-06 Dainippon Screen Mfg. Co., Ltd. Printing press equipped with color chart measuring apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2028144A3 (fr) * 2007-08-21 2009-11-18 Koenig & Bauer AG Dispositif de surveillance et/ou de réglage d'une bande en mouvement dans une imprimante rotative et procédé de surveillance d'une bande en mouvement
EP2210839A3 (fr) * 2007-08-21 2010-12-08 Koenig & Bauer Aktiengesellschaft Dispositif de surveillance et/ou de réglage d'une bande en mouvement dans une imprimante rotative et procédé de surveillance d'une bande en mouvement
EP2269824A1 (fr) * 2009-07-01 2011-01-05 ELTROMAT GmbH Procédé et dispositif de surveillance de l'ajustement du traitement de matériaux en forme de bandes dans des installations
DE202010012725U1 (de) * 2010-09-16 2011-12-19 Emima Gmbh Ortsbestimmung eines bewegten Gegenstands

Also Published As

Publication number Publication date
DE102004033660A1 (de) 2006-02-09
DE102004033660B4 (de) 2008-03-13
EP1619154A3 (fr) 2007-02-28
DE502005010163D1 (de) 2010-10-14
EP1619154B1 (fr) 2010-09-01
ATE479621T1 (de) 2010-09-15

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