EP0847857A1 - Dispositif d'ajustement d'une traverse placée devant un cylindre d'une machine à imprimer rotative - Google Patents

Dispositif d'ajustement d'une traverse placée devant un cylindre d'une machine à imprimer rotative Download PDF

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Publication number
EP0847857A1
EP0847857A1 EP97121273A EP97121273A EP0847857A1 EP 0847857 A1 EP0847857 A1 EP 0847857A1 EP 97121273 A EP97121273 A EP 97121273A EP 97121273 A EP97121273 A EP 97121273A EP 0847857 A1 EP0847857 A1 EP 0847857A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
adjusting device
sensor
light beam
traverse
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
EP97121273A
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German (de)
English (en)
Other versions
EP0847857B1 (fr
Inventor
Rudi Dr. Weniger
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen 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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0847857A1 publication Critical patent/EP0847857A1/fr
Application granted granted Critical
Publication of EP0847857B1 publication Critical patent/EP0847857B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0027—Devices for scanning originals, printing formes or the like for determining or presetting the ink supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0063—Devices for measuring the thickness of liquid films on rollers or cylinders
    • 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

Definitions

  • the invention relates to an adjusting device in front of a Cylinder of a traverse arranged in a rotary printing machine according to the preamble of claim 1.
  • the prior art includes serving as measuring devices Sensor devices that are axial to the outer surface of the cylinder a rotary printing machine arranged on a traverse are already during measurement tasks on the rotary printing press machine running, e.g. for register or color measurement.
  • Another measurement task is moisture measurement, which can be done with a moisture measuring device.
  • a known moisture measuring device for determining the amounts of dampening solution on an offset printing plate includes a light source, an optics, a receiving device and an evaluation device (DE 37 32 934 A1). With this moisture measuring device the radiation from the light source should be focused on a color-free area of a printing plate is directed, which is clamped on a plate cylinder so that the reflected Radiation using a diode array in the Receiving device is detected. For aligning the moisture measuring device compared to the plate cylinder or the clamped Pressure plate, the moisture measuring device on a Traverse arranged parallel to the axis of the plate cylinder be axially displaceable to said axis. The Selection of the measuring point on the clamped printing plate can doing it visually.
  • a device for positioning the measuring field also belongs such a measuring device, which is also used as a sensor device is referred to a selected area of the Shell surface of a cylinder in a rotary printing press to the prior art, in which a pilot light source in the Sensor device is housed and in parallel with this Slidable to the lateral surface of the cylinder on the traverse is (DE 41 06 082 A1).
  • the measuring field should only be a pilot light source directly be visually captured.
  • the measuring field is reached by manual actuation of a Contact triggered the position of the light spot of the pilot light source on the cylinder surface in a computing / control device entered, from whose output the measuring device can later be controlled so that the measuring device readings delivers from the selected area.
  • a contact triggered the position of the light spot of the pilot light source on the cylinder surface in a computing / control device entered, from whose output the measuring device can later be controlled so that the measuring device readings delivers from the selected area.
  • the pilot light source can also be used independently of the Moisture measuring device can be arranged in front of the pressure plate.
  • the arrangement discussed above is not suitable for to record the relative position of the traverse in front of the cylinder, to align the crossbar with the cylinder enable.
  • An exact alignment of the traverse The cylinder is essential to using conventional optoelectronic Measuring devices, as they are especially for the register and Color measurements are used, meaningful, exact Get measurement results.
  • the traverse should in particular parallel to the axis of the cylinder or its outer surface and run at a constant distance from this lateral surface.
  • the parallel course of the traverse is for optical measuring devices important so that the areas of the lateral surface at all points of the cylinder under the same predetermined Angle and with the same beam concentration (focusing) capture.
  • the necessary adjustment at least once in practice, the traverse is used for protractors and distance measuring devices, but a cumbersome adjustment process require.
  • the accuracy of the adjustment also depends on the care and skill of the person performing the adjustment Specialist.
  • the present invention is therefore based on the object an adjusting device of the type mentioned at the beginning create an accurate, straightforward, automatable Adjustment of the truss alignment with respect to the cylinder permitted and which is nevertheless interchangeable, d. H. to one prepared rotary machine can only be used if necessary is.
  • the adjustment aid detects the at the registration point Relative position of the traverse to the closest area of the cylinder jacket on the principle that the angle of incidence of the light beam projected onto the cylinder on the cylinder equal to the angle of reflection of the reflected Beam of light is that of the area-sensitive optoelectronic Sensor is detected in the adjustment device.
  • the beam path of the adjustment device at the level of the optical Axis of the measuring device which instead of Alignment aids to carry out the measurement, e.g. For the register or color measurement, on the bracket of the traverse can be attached.
  • the area-sensitive optoelectronic sensor suitable with the evaluation electronics according to claim 2 is the position of the light beam reflected from the cylinder on the sensor and after converting it to electrical signals can indicate the deviation of the traverse at the Registration point, in particular the direction of deviation, with the display device can be displayed simply and clearly. According to this display, the adjustment e.g. manually and easy to control.
  • the output of the evaluation electronics alternatively or in addition to their connection to the Display device with at least one electrical actuator related, which is suitable, at least to adjust one end of the crossbar with respect to the cylinder.
  • at least one electrical actuator related which is suitable, at least to adjust one end of the crossbar with respect to the cylinder.
  • the adjustment aid comprises particularly advantageously according to claim 4 as the beam of light projecting onto the cylinder optical elements using a semiconductor laser Beam shaping optics, which is designed such that at the point of impact of the laser beam on the cylinder only one small dot-shaped spot arises, which is an exact measurement the position of the adjustment device and thus the crossbar allowed the detection point opposite the cylinder.
  • Claim 5 advantageous the optical receiver a four-quadrant sensor have one in the beam path Receiving optics is arranged.
  • the receiving optics are designed that they reflect the reflected light beam or Laser beam widened somewhat to provide an optimized coverage of the sensor with the received reflected light beam to reach.
  • the evaluation electronics on the four-quadrant sensor connected can be received by the four sensor areas Evaluate signals after amplification in a conventional manner.
  • the evaluation can in particular be carried out in two evaluation stages take place, the first evaluation level the sum the signals of the upper quadrants (sensor areas) with the signals compares the lower quadrant and the second Level the signals of the left quadrants with those of the right Quadrants are compared.
  • the result is a result which is the deviation in direction and amount of that Cylinder light spots reflected on the sensor reproduces a target position by a uniform application of all four quadrants of the four-quadrant sensor can be defined with the reflected light beam.
  • the optical receiver a PSD element is advantageous as an optoelectronic sensor (Position Sensitive Device).
  • Such area sensitive optoelectronic diodes provide an optically activatable Potentiometer, one of which depending on the location on it projected light beam in one direction or in two directions perpendicular to each other a voltage or current distribution corresponding to the location tapped and the location with the downstream evaluation electronics can be detected.
  • the optical receiver can also be a Include matrix camera, which is expedient by a CCD camera is realized.
  • This CCD camera has evaluation electronics, which indicates the location of the reflected light spot the matrix-like arrangement of the light-sensitive elements determined by means of an image processing system. But it can also for a simple display of the position of the light spot simple video monitor are sufficient.
  • the matrix camera expediently has optics on the reflected light beam to 5 to 10% expands the area of a sensor matrix.
  • the traverse is on their two outer ends independently of each other in two directions oriented at right angles to each other adjustable to the axis of the cylinder.
  • the crossbar can be adjusted eccentrically at both ends stored and at each end with an electric drive coupled, which with an output of the evaluation electronics in Connection is established.
  • This is a precise, low-wear Adjustment device realized after the implementation of the Adjustment is self-locking.
  • the adjustment aid is reliable and reproducible using a bayonet coupling the bracket can be coupled.
  • the bayonet coupling is on the bracket positioned that the optical axis of the Alignment aid at the same height as the axis of the measuring device lies.
  • Fig. 1, 1 is a cylinder, namely an impression cylinder the last printing unit of a rotary printing press referred to, in front of which a crossmember 2 as parallel as possible and in same distance from a cylinder axis, not shown, or to the outer surface of the cylinder 1 over the entire length of the Traverse is arranged.
  • a bracket on the crossbar 3 slidably mounted to accommodate an optical Measuring device can serve from the drawing in detail does not emerge.
  • a beam path 4 of the measuring device is indicated by a dash-dotted line.
  • To determine the orientation of the To adjust the crossbeam is the crossbeam on its two outer ones Ends, which can be called A end and B end, stored laterally in eccentrics.
  • Such an eccentric with one round eccentric disc 5 in a round receiving it Bore 6 in a side part 7 of the printing machine is shown in Fig. 2, with a portion of the side part broken out is shown.
  • the traverse 2 is in the eccentric disc 5 eccentric with respect to their virtual axis of rotation 8 arranged, whereby the eccentric effect when the eccentric disc rotates 5 is achieved in the bore 6.
  • the traverse 2 in the Practice does not necessarily have to have a round cross-section, but that it may be useful to guide the bracket 3 can form the traverse with other cross sections.
  • the eccentric shown in Fig. 2 is at both ends 9 and 10 of the traverse 2 is provided, whereby the double arrows indicated adjustability of the cross member 2 in two to each other perpendicular directions that also to the not shown Axis of the cylinder are oriented at right angles becomes.
  • Bracket 3 has a bayonet coupling 11, the is indicated with a broken line, and the suitable is in connection with a corresponding bayonet coupling element on the adjustment aid indicated only in Fig. 1 15 this is detachable with the bracket, but precise positionable to connect.
  • the adjustment aid designated 15 goes in a top view - with the cover removed or in section - schematically.
  • a housing 16 which on its Front is provided with a glass window 17 is a Semiconductor laser 18 arranged with beam shaping optics 19, which is a laser beam of reduced diameter projected onto the cylinder 1 as a light spot 20.
  • the beam of light projected onto the cylinder 1 is 21 designated. That partially reflected by cylinder 1 Beam of light emanating from the light spot 20, bears the reference number 22 and is received by a receiving optics 23rd and an optical filter 24 on a four-quadrant sensor 25 thrown.
  • the receiving optics 23 expand the reflected light beam 22 slightly so that the bundle of rays receiving area of the four-quadrant sensor, which is shown in FIG and FIG. 7 is shown and generally designated 26 there, is sufficiently covered.
  • the optical filter 24 is in the Wavelength of the semiconductor laser 18 transmissive, so that external light influences be largely eliminated.
  • the evaluation electronics 27 Immediately in connection with the four-quadrant sensor 25 there is an evaluation electronics 27, which signals from in the 5 and 7 shown four quadrants or surface areas of the received area 26 receives and evaluates.
  • the evaluation electronics comprises two evaluation levels, one of which first stage, not designated, the sum of the signals from the upper Quadrants 28, 29 with the sum of the signals from lower Quadrants 30, 31 are compared.
  • a second evaluation level compares the signals of the left quadrants 28, 31 with those the right quadrant 29, 30.
  • Outputs of the evaluation electronics 27 are - which is shown in FIG. 3 is not shown in detail - with a display device 32 connected, which shows how the position the crossbeam at the detection point of the adjustment aid 15, deviates from a target position.
  • the display device can be a good / bad display with different colored LEDs be or be trained for analog display that also indicates the extent of the deviation from the target position.
  • the outputs of the evaluation electronics can 27 also connected to block 12 in FIG. 1 be one of the servomotors via a motor control 13,14 actuated to the positional deviation automatically balance.
  • FIGS. 5 and 7 The detection of the position deviation with a four-quadrant sensor is illustrated in FIGS. 5 and 7, in each of which the receiving area 26 of the four-quadrant sensor in four receiving areas or quadrants 28 - 31 shown divided is.
  • the traverse 2 is on the Detection point of the adjustment device 15 too high compared arranged the cylinder.
  • the reflected beam of light 22 is therefore on the starting from the adjustment 15 Thrown back light beam 21.
  • that the reflected light beam has a light spot 34 on the upper surface segments 28, 29 of the receiving surface 26 generated. This can be done in a corresponding manner with the display device 32 are displayed and via at least one of the Servomotors 13, 14 are balanced, as long and in be set in motion until the light spot 34 in FIG. 7 assumes the position of the light spot 33 in FIG. 5.
  • the adjustment aid 15 is together with the bracket 3 in a position near one of the two lateral end positions out at the ends 9, 10, but the adjustment aid still detects cylinder 1, i.e. a beam of light on projects it and picks up the reflected light beam. The reflected beam of light is then a measure for the positional deviation of the traverse 2 at this end, which in determined and balanced in the manner discussed can.
  • the adjustment aid 15 is initially in a first End position, e.g. at the end 9, brought and then into the other position at the end 10 moves. During this process should the sensor signals, i.e. the signals from the Four-quadrant sensor, do not change. Different signals from the upper quadrants 28, 29 on the one hand and the lower ones Quadrants 30, 31 on the other hand give direction and amount of Deviation from the target position.
  • the adjustment aid 15 is in turn in a lateral end position brought on the traverse. Then the distance between the crossbar 2 to the cylinder 1 automatically with the Servomotors 13, 14 changed so that the two left quadrants 28, 31 with the same amount of light from the reflected Beams of light 22 are acted upon as the right Quadrants 29, 30. Then the alignment aid 15 becomes continuous sideways in the direction of the other lateral end position hazards. During this sideways procedure the signals from the quadrants of the four-quadrant sensor Don ⁇ t change.
  • the area-sensitive four-quadrant sensor is the different signals coming from its quadrant the left quadrant 28, 31 on the one hand and the right Quadrants 29, 30 on the other hand, the direction and magnitude of the positional deviation signal.

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
EP97121273A 1996-12-10 1997-12-04 Dispositif d'ajustement d'une traverse placée devant un cylindre d'une machine à imprimer rotative Expired - Lifetime EP0847857B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19651193A DE19651193A1 (de) 1996-12-10 1996-12-10 Justiereinrichtung einer vor einem Zylinder einer Rotationsdruckmaschine angeordneten Traverse
DE19651193 1996-12-10

Publications (2)

Publication Number Publication Date
EP0847857A1 true EP0847857A1 (fr) 1998-06-17
EP0847857B1 EP0847857B1 (fr) 2001-05-30

Family

ID=7814175

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97121273A Expired - Lifetime EP0847857B1 (fr) 1996-12-10 1997-12-04 Dispositif d'ajustement d'une traverse placée devant un cylindre d'une machine à imprimer rotative

Country Status (3)

Country Link
EP (1) EP0847857B1 (fr)
JP (1) JP2986770B2 (fr)
DE (2) DE19651193A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19933287A1 (de) * 1999-07-15 2001-01-18 Heidelberger Druckmasch Ag Vorrichtung zur Überwachung des Transportes flächiger Exemplare
US6446961B1 (en) 1999-07-15 2002-09-10 Heidelberger Druckmaschinen Ag Method and device for monitoring the transport of flat copies
EP1450210A1 (fr) * 2003-02-21 2004-08-25 Heidelberger Druckmaschinen Aktiengesellschaft Appareil et méthode pour détecter le bord d'un matériau d'enregistrement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2141247A1 (de) * 1970-08-19 1972-03-09 Harris Intertype Corp., Cleveland, Ohio (V.St A.) Verfahren und Vorrichtung zum Abtasten der Flüssigkeitsmenge auf einem Objekt
DE3444889A1 (de) * 1984-12-08 1986-06-12 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbdosiervorrichtung fuer das farbwerk einer druckmaschine
DE3732934A1 (de) * 1987-09-30 1989-04-20 Heidelberger Druckmasch Ag Sensoreinrichtung
EP0388904A2 (fr) * 1989-03-23 1990-09-26 Stork MBK GmbH Procédé et dispositif d'ajustage photoélectrique pour le positionnement automatique commandé par ordinateur pour les blocs d'impression d'une presse rotative de sérigraphie
DE4106082A1 (de) * 1990-04-26 1991-10-31 Heidelberger Druckmasch Ag Verfahren und vorrichtung zum positionieren einer sensoreinrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1087142B (de) * 1959-05-13 1960-08-18 Dresden Feinmess Vorrichtung zum Ausrichten von Klischees auf Formzylindern
DE3614092A1 (de) * 1986-04-25 1987-10-29 Grapho Metronic Gmbh & Co Verfahren und anordnung zum ausmessen von auf druckerzeugnissen mitgedruckten farbmessstreifen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2141247A1 (de) * 1970-08-19 1972-03-09 Harris Intertype Corp., Cleveland, Ohio (V.St A.) Verfahren und Vorrichtung zum Abtasten der Flüssigkeitsmenge auf einem Objekt
DE3444889A1 (de) * 1984-12-08 1986-06-12 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbdosiervorrichtung fuer das farbwerk einer druckmaschine
DE3732934A1 (de) * 1987-09-30 1989-04-20 Heidelberger Druckmasch Ag Sensoreinrichtung
EP0388904A2 (fr) * 1989-03-23 1990-09-26 Stork MBK GmbH Procédé et dispositif d'ajustage photoélectrique pour le positionnement automatique commandé par ordinateur pour les blocs d'impression d'une presse rotative de sérigraphie
DE4106082A1 (de) * 1990-04-26 1991-10-31 Heidelberger Druckmasch Ag Verfahren und vorrichtung zum positionieren einer sensoreinrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19933287A1 (de) * 1999-07-15 2001-01-18 Heidelberger Druckmasch Ag Vorrichtung zur Überwachung des Transportes flächiger Exemplare
US6446961B1 (en) 1999-07-15 2002-09-10 Heidelberger Druckmaschinen Ag Method and device for monitoring the transport of flat copies
EP1450210A1 (fr) * 2003-02-21 2004-08-25 Heidelberger Druckmaschinen Aktiengesellschaft Appareil et méthode pour détecter le bord d'un matériau d'enregistrement

Also Published As

Publication number Publication date
JP2986770B2 (ja) 1999-12-06
DE19651193A1 (de) 1998-06-18
JPH10166556A (ja) 1998-06-23
EP0847857B1 (fr) 2001-05-30
DE59703668D1 (de) 2001-07-05

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