EP0062592B1 - Dispositif d'encrage pour machine d'imprimerie - Google Patents

Dispositif d'encrage pour machine d'imprimerie Download PDF

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Publication number
EP0062592B1
EP0062592B1 EP19820400647 EP82400647A EP0062592B1 EP 0062592 B1 EP0062592 B1 EP 0062592B1 EP 19820400647 EP19820400647 EP 19820400647 EP 82400647 A EP82400647 A EP 82400647A EP 0062592 B1 EP0062592 B1 EP 0062592B1
Authority
EP
European Patent Office
Prior art keywords
screw
blade
casing
actuator
inking device
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
Application number
EP19820400647
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0062592A1 (fr
Inventor
Alain Ducournau
Michel Thomas
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.)
Creusot Loire SA
Original Assignee
Creusot Loire SA
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 Creusot Loire SA filed Critical Creusot Loire SA
Publication of EP0062592A1 publication Critical patent/EP0062592A1/fr
Application granted granted Critical
Publication of EP0062592B1 publication Critical patent/EP0062592B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
    • B41F31/045—Remote control of the duct keys

Definitions

  • the invention relates to an improvement to the inking device for a printing machine as described in the French patent of the same applicant published under No. 2,389,487 and in the preamble of claim 1.
  • the device described in the previous patent aims to improve the metering precision of the ink film delivered by the ink roller, mainly to take into account the fact that the quantity of ink consumed by a plate is almost never uniform over the entire width of the machine.
  • This device which also makes it possible to better regulate over time the wear of the active edge of the inkwell blade in contact with the ink roller, consists in making the various pushers for adjusting the blade movable, by mounting them each on a individual support independent of the blade support frame, each pusher support being provided with fixing means facing the lower edge of the blade, in an adjustable position transversely, parallel to the edge of the blade. It is thus possible to modify at will the transverse position of the action points of the pushers on the blade, as well as the distribution and spacing of these pushers along the blade.
  • patent FR-A-2 405 134 describes a device for adjusting the inkwell blade of a printing machine, comprising several inkwell adjustment screws distributed over the width of the blade provided with remote control means. comprising a motor followed by a gear train in drive link via a kinematic chain with the adjustment screws and manual control means comprising adjustment knobs associated with graduated disks.
  • the invention relates to a device for adjusting the inkwell blade comprising control means of small transverse size, interchangeable, capable of being mounted quickly and ensuring very high adjustment precision.
  • each pusher support is constituted by a flat motorized and remote-controlled housing, in which the pusher is slidably mounted along a side face of the housing, with its end opposite the hinged blade in the vicinity of the axis pivoting of a lever whose other end rests on a nut engaged on a screw substantially parallel to the pusher and disposed along the opposite side face of the housing, the screw being rotated by a gearmotor arranged in the central part of the case, between the screw and the pusher.
  • the screw is directly coupled to a rotary potentiometer used both by the variable voltage measured at its terminals as a repeater at a distance from the angular position of the screw, and by its mechanical stops as a travel limit rotation of the screw in each direction of rotation.
  • Each support is here constituted by a molded case 15 sealed in a sealed manner by a cover 16, the assembly being made for example of plastic material resistant to solvents and printing inks.
  • Each box 15-16 can be moved transversely along the bar 14, and be immobilized at the chosen location by means of the locking screw 17.
  • the pusher 5 guided in axial translation by ordinary elements of the box not shown in the voluntarily siplified drawing opens out to the outside of the box to come into contact with the blade 2.
  • the sealing of the transverse is ensured by the bellows 19.
  • the other end of the pusher 5 is articulated at 20 at the end of an operating lever 21.
  • the lever 21 has a circular cylindrical surface 22 held in abutment on the flat end of an adjusting screw 24 at a time by gravity and by the elastic return of the blade 2.
  • the articulation 20 is slightly eccentric, of the order for example of 2 mm relative to the axis of the surface 22.
  • the screw 24 is provided with a lock nut 25.
  • the other end of the lever 21 immobilizes in rotation and is in sliding support on a nut 27 engaged on the threaded central part of an axis 28.
  • the connecting piece 29 constitutes both a drive pulley and a rigid coupling between the axis 28 and the operating rod 30 of a potentiometer 31.
  • the assembly potentiometer 31 and its rod 30 extended by the axis 28 is carried by a U-shaped support 32 fixed to the bottom of the housing 15.
  • the pulley 29 is linked by the belt 33 to the pulley 34 mounted at the end of the shaft an electric geared motor 35, itself held in a support 36 fixed to the bottom of the housing.
  • An electrical connector with pins 38 is fixed on a lateral face of the case 15; the electrical connections between the internal parts of the pins and the motor 35 or the potentiometer 31 have not been shown here so as not to overload the drawing.
  • axis 28 is secured with a knurled button 39 opening to the outside of the housing.
  • the device which has just been described is in the form of an interchangeable box, with very small transverse dimensions, and the connection of which to the remote control system requires only a simple connection of a standard multi-pin electrical outlet. Since the total thickness of the case can be barely greater than the diameter of the motor 35 or of the potentiometer 31, it is possible, using current commercial models for these two devices, to make cases with a thickness of the order of 30 mm. This allows to benefit from the adventures of the remote control of the inkwell setting even with very close pushers which allow a great finesse of setting.
  • the relative arrangement of the members inside the housing, with in particular the motor 35 disposed between the screw 28 and the pusher 5 substantially parallel to each other in the vicinity of two opposite lateral faces of the housing makes it possible to obtain a very large gear reduction ratio.
  • the ratio of the diameters of the pulleys 34 and 29 gives a first reduction ratio for the rotation of the screw 28.
  • this rotational movement is transformed into a small linear displacement of the end of the lever 21; this movement is visible and identifiable from the outside thanks to the index 40 formed at the end of the lever and which moves along a graduation 43 traced on a transparent porthole 44 of the case.
  • the long length of the lever 21, which goes from one face to the other of the case also makes it possible, with the slight eccentricity of the articulation 20, to reduce the linear stroke of the pusher 5 to approximately thirtieth of that of the nut 27 .
  • the potentiometer 31 was chosen here you type with mechanical stops on a limited number of turns, for example ten turns, which allows it to play a double role.
  • the voltage collected at its terminals varies as the angular position of the screw 28, and therefore as the linear position of the nut 27 and the pusher 5; it therefore plays the role of repeater of the position of the pusher on the general remote control console of the machine.
  • its mechanical end-of-travel stops limit, by a frank stop in rotation, the linear travel of the nut 27, and thereby the risks of jamming by misalignment.
  • the adjustable stop 24 is used for manual presetting of the blade approach up to, for example, 0.05 mm of roller spacing, the total distance of the remote controlled fine adjustment being of the order of 0.35 mm with an accuracy of 5 microns.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP19820400647 1981-04-08 1982-04-08 Dispositif d'encrage pour machine d'imprimerie Expired EP0062592B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8107020 1981-04-08
FR8107020A FR2503632A2 (fr) 1981-04-08 1981-04-08 Dispositif d'encrage pour machine d'imprimerie

Publications (2)

Publication Number Publication Date
EP0062592A1 EP0062592A1 (fr) 1982-10-13
EP0062592B1 true EP0062592B1 (fr) 1985-01-02

Family

ID=9257141

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820400647 Expired EP0062592B1 (fr) 1981-04-08 1982-04-08 Dispositif d'encrage pour machine d'imprimerie

Country Status (3)

Country Link
EP (1) EP0062592B1 (enrdf_load_stackoverflow)
DE (1) DE3261744D1 (enrdf_load_stackoverflow)
FR (1) FR2503632A2 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3728672A1 (de) * 1986-09-11 1988-03-31 Jpe Kk Farbkastenvorrichtung fuer eine druckmaschine
DE19515442A1 (de) * 1994-07-28 1996-02-01 Heidelberger Druckmasch Ag Analogsignal-Steuerschaltung
CN105856837A (zh) * 2016-05-31 2016-08-17 江阴市汇通包装机械有限公司 刮墨装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2359640A (en) * 1942-02-20 1944-10-03 H H Heinrich Inc Inking mechanism for printing presses
DE7730668U1 (de) * 1977-10-04 1978-01-12 Maschf Augsburg Nuernberg Ag Einstellvorrichtung fuer das farbmesser einer druckmaschine

Also Published As

Publication number Publication date
EP0062592A1 (fr) 1982-10-13
DE3261744D1 (en) 1985-02-14
FR2503632B2 (enrdf_load_stackoverflow) 1983-05-27
FR2503632A2 (fr) 1982-10-15

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