EP0557198B1 - Vorrichtung und Verfahren zum Bestimmen der Kontaktposition zwischen zwei Teilen von denen mindestens eine mobil ist - Google Patents

Vorrichtung und Verfahren zum Bestimmen der Kontaktposition zwischen zwei Teilen von denen mindestens eine mobil ist Download PDF

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Publication number
EP0557198B1
EP0557198B1 EP19930400420 EP93400420A EP0557198B1 EP 0557198 B1 EP0557198 B1 EP 0557198B1 EP 19930400420 EP19930400420 EP 19930400420 EP 93400420 A EP93400420 A EP 93400420A EP 0557198 B1 EP0557198 B1 EP 0557198B1
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EP
European Patent Office
Prior art keywords
cylinder
contact
mobile
cylinders
parts
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.)
Expired - Lifetime
Application number
EP19930400420
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English (en)
French (fr)
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EP0557198A1 (de
Inventor
Bernard Six
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.)
Komori Chambon SA
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Komori Chambon SA
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Publication date
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Publication of EP0557198A1 publication Critical patent/EP0557198A1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0072—Devices for measuring the pressure between cylinders or bearer rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/34—Cylinder lifting or adjusting devices

Definitions

  • the present invention relates to a method and a device for detecting, in a machine, the position of coming into contact of two parts, at least one of which is movable, as a whole, relative to the other, a first of these parts or driving part which can be set in motion while the second part or receiving part is mounted idly on its support, applicable more particularly but not exclusively to parallel cylinders of a rotary printer.
  • a sheet of material to be printed travels at constant speed between two parallel cylinders, tangent to each other, namely a blanket cylinder and a counterpart cylinder.
  • the counter cylinder is made of a material which can be hard or flexible, while the surface layer which constitutes the blanket proper, is made of flexible material.
  • the two cylinders are applied under pressure against each other so that the layer of flexible material of the blanket cylinder is crushed in its zone of contact with the counterpart cylinder, the importance of this crushing depending on the pressure exerted by the counter cylinder on the blanket cylinder.
  • the flexible surface layer of the blanket cylinder be crushed by a predetermined known value.
  • This predetermined crushing value it is therefore necessary to determine beforehand the position of simple contact, without pressure, between the counter cylinder and the blanket cylinder with flexible surface layer, with the sheet of material pinched between them.
  • This single contact position also called the "zero" position, which varies as a function of the thickness of the ply, serves as a starting point for the additional stroke of the counterpart cylinder, the stroke the value is predetermined and gives, as a result of the crushing of the flexible surface layer of the blanket cylinder, the desired pressure between the two cylinders with the sheet to be printed passing between them.
  • this reference position or "zero" position has been determined empirically, for each ply thickness, by the machine operator. To do this, the operator rotates the blanket cylinder, then moved away from the counterpart cylinder, and engages between the two cylinders a piece of the tablecloth to be printed or of a material having the same thickness, then it brings the counterpart cylinder closer to the cylinder. blanket, until contact is established.
  • the instant of this simple contact, without pressure, is determined at the moment when the piece of ply which is then itself in contact with the peripheral surfaces of the two cylinders, is driven as a result of its pinching between the two cylinders. It then suffices for the operator to locate this "zero" position and to take it as a starting base for the subsequent pressure setting, resulting in the predetermined crushing of the peripheral layer of the blanket cylinder.
  • the present invention aims to remedy this drawback by providing a device for automatically detecting this "zero" position.
  • this method of detecting, in a machine, the contact position of two parts, at least one of which is movable, as a whole, relative to the other, a first of these parts or driving part being able to be set in motion while the second part or receiving part is mounted idly on its support is characterized in that the driving part is put in movement while leaving the receiving part immobile, a relative movement of the two driving and receiving parts is carried out until they come into contact, the start of the movement of the receiving part, initially stationary, which results from its coming into contact with the moving driving part, is noted, and the positions occupied by the two driving and receiving parts are then recorded, at the moment when the previously immobile receiving part begins to be set in motion, as defining the contact position of the two parts.
  • the invention also relates to a device for implementing the above-mentioned detection method, this device being characterized in that it comprises a motion detection device associated with the receiving part mounted idle, this device comprising a sensor movement emitting a signal from the start of movement of the receiving part, means for locating the instantaneous position of the moving part and a signal processing circuit to which the means for locating the moving part and the sensor are connected so as to record, in a circuit memory, the position reached by the moving part at the moment when the receiving part, previously stationary on its support, just begins to be set in motion relative to its support as a result of its coming into contact with the driving part.
  • FIG. 1 A description will be given below, with reference to FIGS. 1 to 3 of the drawing, of an application of the detection method and device according to the invention to a rotary offset printing machine of which only the lower part is shown in FIG. 1.
  • This printing machine comprises two parallel horizontal cylinders arranged one above the other, namely an upper blanket cylinder 1 and a lower counter cylinder 2, cylinders between which passes a sheet of printing material 3.
  • the upper blanket cylinder 1 is integral with 'A shaft 4 which extends transversely (relative to the web 3) between two fixed bearings 5 carried by the uprights of the frame 6 of the printer.
  • the blanket cylinder 1 comprises, in the usual manner, a surface layer of flexible material.
  • the lower counterpart cylinder 2 is mounted on the frame 6 of the printer so that it can be moved vertically.
  • the counterpart cylinder 2, made of flexible or hard material, is integral with a support shaft 7 transverse to the ply 3.
  • the two opposite ends of the shaft 7 of the counterpart cylinder 2 are carried by respective bearings 8, 9 which can be moved vertically on the frame 6 of the printer, independently of each other, under the control of respective individual position adjustment mechanisms 11,12.
  • These mechanisms can be of any known type, for example with rotary screw and nut.
  • Each of these mechanisms provides a signal indicating the actual position of the bearing 8, 9 with which it is associated.
  • These position signals are applied respectively, by conductors 13, to a circuit 14 for processing the signals.
  • This circuit 14 includes in particular a memory for storing signals representing the effective positions of the movable bearings 8, 9.
  • a rotation detection device 15 is associated with the lower counterpart cylinder 2.
  • This device 15 which can be of any suitable type, for example photoelectric, inductive, etc., comprises a fixed sensor 16 disposed near the cylinder. 2, for example facing marks or marks 17 provided on a front face of the cylinder 2 or on an extreme part of its lateral surface.
  • the sensor 16 and the pins 17 are arranged, with respect to each other, in such a way that the start of the rotation drive of the lower counterpart cylinder 2 results in the emission of a signal which is then applied, by through a conductor 18, to the signal processing circuit 14.
  • the detection device makes it possible to determine the reference position or "zero" position of the two cylinders 1 and 2, in which they happen to be just in contact, without applying pressure, with the sheet of material to be printed 3 taken between them two.
  • the various constituent elements occupy the positions shown in FIGS. 1 and 2 and the two blanket 1 and counterpart 2 cylinders are separated from each other, the counterpart cylinder 2 being in the low position.
  • the operator controls the rotation of the single upper blanket cylinder 1 then constituting a "driving part", at low speed, as shown in FIG. 2, while the lower counterpart cylinder 2, constituting a madly mounted "receiving part", is kept stationary around its axis.
  • the operator lowers, by means of the adjustment mechanism 11, the left bearing 8 and the left part of the shaft 7 to their starting position. It then proceeds in the same way in the right part of the machine, causing the right bearing 9 to rise, until the "zero" position is also reached there and the corresponding signal is transmitted from the sensor. 16, to circuit 14, and then lowering this level.
  • the memory circuit 14 contains data corresponding to the "zero" position obtained in the left and right parts of the machine. It then suffices for the operator to simultaneously raise the two left 8 and right 9 bearings until the predetermined "zero" positions are reached in the manner described above. It is then certain that the axes of the two cylinders 1 and 2 are perfectly parallel to each other. A third phase of adjustment can take place in causing the right and left side of the counterpart cylinder 2 to rise simultaneously, after having adjusted the parallelism of the axes using the information already obtained. At this instant the sheet of material to be printed 3 is found to be just in contact with the surfaces of the two cylinders 1 and 2, without being subjected to a pressure. After that the operator commands an additional simultaneous movement, upwards, of the two bearings 8 and 9, and this over the same distance, to obtain a predetermined known value of the crushing of the flexible surface layer of the blanket cylinder 1 corresponding to a good quality print.
  • the lower cylinder 2 (part receiving the movement) which alone is mounted vertically movable relative to the upper cylinder 1 (driving part) mounted fixed on the frame of the machine.
  • the reverse arrangement could also be envisaged, the detection of the "zero" position, then taking place on the vertically movable upper cylinder, moving in the direction of the lower cylinder kept fixed on the frame of the machine.
  • the device for detecting the "zero" position according to the invention could also be used with a machine in which the cylinders are both mounted on the frame of the machine.
  • the device for detecting the contact position of the two cylinders and the method of parallelizing the axes of the two cylinders can be used both in the case where a ply passes between the two cylinders and in the case where such a ply is absent, the two cylinders then being directly tangent to one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Claims (5)

  1. Verfahren, um in einer Maschine die Kontaktposition zweier Teile (1, 2) zu erfassen, von denen mindestens eines (2) bezüglich des anderen in seiner Gesamtheit beweglich ist, wobei ein erstes oder treibendes dieser Teile in Bewegung versetzt werden kann, während das zweite oder getriebene Teil frei drehend auf seiner Lagerung angeordnet ist, dadurch gekennzeichnet, daß das treibende Teil (1) in Bewegung versetzt wird, während das getriebene Teil (2) bewegungslos bleibt, eine relative Verschiebung der beiden treibenden und getriebenen Teile (1, 2) durchgeführt wird, bis diese in Kontakt kommen, der Beginn der Bewegung des getrieben (2), anfänglich bewegungslosen Teils gemessen wird, der dadurch zustande kommt, daß dieses mit dem in Bewegung befindlichen, treibenden Teil in Kontakt kommt, und dann die Positionen, die von den beiden treibenden und getriebenen Teilen (1, 2) in dem Moment eingenommen werden, bei dem das zuvor bewegungslose, getriebene Teil (2) in Bewegung versetzt wird, zur Definierung der Kontaktposition der beiden Teile (1, 2) gespeichert werden.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die treibenden und getriebenen Teile zwei parallele Zylinder (1, 2) sind, von denen mindestens einer, parallel zu sich selbst und in Richtung des anderen Zylinders, verschoben werden kann.
  3. Verfahren nach Anspruch 2, angewandt auf die Parallelausrichtung der beiden Zylinder (1, 2), dadurch gekennzeichnet, daß ein erster Zylinder (1) in Rotation um seine Achse versetzt wird, ein erstes bewegliches Wellenlager (8) des zweiten Zylinders (2), der bewegungslos um seine Achse gehalten wird, in Richtung des ersten Zylinders (1) verschoben wird, bis ein erstes Ende des zweiten Zylinders (2) in Kontakt mit dem ersten Zylinder (1) kommt, in diesem Moment das In-Rotation-Versetzen des zweiten Zylinders (2) durch den ersten Zylinder (1) erfaßt wird, die durch den zweiten Zylinder (2), auf der Seite seines ersten Wellenlagers (8), im Verlauf des In-Kontakt-Kommens der beiden Zylinder (1, 2) erreichte Position gespeichert wird, das erste bewegliche Wellenlager (8) in umgekehrter Richtung verschoben wird, um es in die Ausgangsstellung zurückzuführen, und diese Operationen für das weite bewegliche Wellenlager (9) des zweiten Zylinders (2) wiederholt werden, derart daß die Kontaktposition zwischen da beiden Zylindern (1, 2) auf der Seite des zweiten Wellenlagers (9) erfaßt und gespeichert werden, und nachdem das zweite bewegliche Wellenlager (9) in die Ausgangsposition zurückgeführt wurde, erneut gleichzeitig die beiden beweglichen Wellenlager (8, 9) verschoben werden, um sie alle beide in ihre zuvor gemessenen, dem Kontakt der beiden Zylinder entsprechenden Positionen zu bringen, wodurch die Parallelität der Achsen der beiden Zylinder (1, 2) gewährleistet wird.
  4. Vorrichtung, um in einer Maschine die Kontaktposition zweier Teile (1, 2) zu erfassen, von denen mindestens eines (2) bezüglich des anderen in seiner Gesamtheit beweglich ist, wobei ein erstes oder treibendes dieser Teile in Bewegung versetzt werden kann, während das zweite oder getriebene Teil frei drehend auf seiner Lagerung angeordnet ist, dadurch gekennzeichnet, daß sie eine Vorrichtung zur Bewegungserfassung (15) enthält, die mit dem getriebenen, frei drehend gelagerten Teil (2) in Verbindung steht, wobei diese Vorrichtung aufweist: einen Bewegungsaufnehmer (16), der vom Beginn der Bewegung des getriebenen Teils ein Signal aussendet, Einrichtungen (11, 12) zur Lokalisierung der Momentanposition des beweglichen Teils (2) und eine Schaltung zur Verarbeitung von Signalen (14), mit welchen die Einrichtungen (11, 12) zur Lokalisierung des beweglichen Teils (2) und der Aufnehmer (16) verbunden sind, derart daß in einem Speicher der Schaltung (14) die Position gespeichert wird, die vom beweglichen Teil (2) in dem Moment erreicht wird, in dem infolge des In-Kontakt-Kommens mit dem treibenden Teil (1) das getriebene, zuvor auf seinem Träger bewegungslose Teil gerade bezüglich seines Trägers in Bewegung versetzt wird.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die treibenden und getriebenen Teile zwei parallele Zylinder (1, 2) sind, von denen mindestens einer, parallel zu sich selbst und in Richtung des anderen Zylinders, verschoben werden kann.
EP19930400420 1992-02-21 1993-02-18 Vorrichtung und Verfahren zum Bestimmen der Kontaktposition zwischen zwei Teilen von denen mindestens eine mobil ist Expired - Lifetime EP0557198B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9202047 1992-02-21
FR9202047A FR2687605B1 (fr) 1992-02-21 1992-02-21 Procede et dispositif de detection, dans une machine, de la position de venue en contact de deux pieces dont l'une au moins est mobile.

Publications (2)

Publication Number Publication Date
EP0557198A1 EP0557198A1 (de) 1993-08-25
EP0557198B1 true EP0557198B1 (de) 1996-06-19

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EP19930400420 Expired - Lifetime EP0557198B1 (de) 1992-02-21 1993-02-18 Vorrichtung und Verfahren zum Bestimmen der Kontaktposition zwischen zwei Teilen von denen mindestens eine mobil ist

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EP (1) EP0557198B1 (de)
JP (1) JPH0671867A (de)
DE (1) DE69303192T2 (de)
FR (1) FR2687605B1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4318200C2 (de) * 1993-06-01 1995-04-20 Roland Man Druckmasch Verfahren zum Einstellen der Berührung zweier im Abstand zueinander verstellbarer Walzen
GB9426166D0 (en) * 1994-12-23 1995-02-22 Langston Corp Printing apparatus
IT1305903B1 (it) * 1997-04-02 2001-05-21 Maf Spa Ora Valmet Rotomec S P Dispositivo di rilevamento della posizione reciproca e di comandotraslazione di piu' elementi sequenziali mobili lungo percorsi
DE19900258A1 (de) * 1999-01-07 2000-07-13 Fischer & Krecke Gmbh & Co Verfahren zum Anstellen zweier Zylinder einer Druckmaschine gegeneinander
ITTO20011012A1 (it) * 2001-10-24 2003-04-24 Nebiolo Printech S P A Macchina per la stampa offset.
CN110027306B (zh) * 2019-05-03 2021-08-17 深圳市图加特实业有限公司 一种具有调节离合机构功能的印刷机及工作方法
CN111421947B (zh) * 2020-04-17 2021-12-28 汕头市晟涛印刷有限公司 一种印刷设备用冷却辊升降微调定位机构

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE491084C (de) *
US4132166A (en) * 1977-10-07 1979-01-02 Aldo Bugnone Mounting for rotary cylinders, particularly in a printing press

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Publication number Publication date
DE69303192D1 (de) 1996-07-25
FR2687605A1 (fr) 1993-08-27
JPH0671867A (ja) 1994-03-15
FR2687605B1 (fr) 1994-04-29
EP0557198A1 (de) 1993-08-25
DE69303192T2 (de) 1997-02-20

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