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EP0453792A1 - Dispositif de dosage de l'encre avec encrier pivotable - Google Patents

Dispositif de dosage de l'encre avec encrier pivotable Download PDF

Info

Publication number
EP0453792A1
EP0453792A1 EP91104729A EP91104729A EP0453792A1 EP 0453792 A1 EP0453792 A1 EP 0453792A1 EP 91104729 A EP91104729 A EP 91104729A EP 91104729 A EP91104729 A EP 91104729A EP 0453792 A1 EP0453792 A1 EP 0453792A1
Authority
EP
European Patent Office
Prior art keywords
ink fountain
roller
ink
elements
support
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
EP91104729A
Other languages
German (de)
English (en)
Other versions
EP0453792B1 (fr
Inventor
Paul Abendroth
Joachim Herzel
Peter Hummel
Robert Ortner
Joachim Steuer
Achim Stöffler
Janko Despot
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 EP0453792A1 publication Critical patent/EP0453792A1/fr
Application granted granted Critical
Publication of EP0453792B1 publication Critical patent/EP0453792B1/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
    • 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

Definitions

  • the invention relates to a device for guiding an ink fountain of a printing press according to the preamble of patent claim 1.
  • the ink is fed in offset printing machines with the aid of ink metering elements in an ink fountain, which interacts with an ink fountain roller.
  • a differently profiled ink layer is produced on the ink fountain roller, which results from the positioning of the ink metering elements relative to the ink fountain roller.
  • an exact storage of the ink fountain relative to the ink fountain roller is necessary. It should also be borne in mind that deformations in the ink fountain area and on the ink fountain roller result from the weight and high viscosity of the relatively tough printing ink.
  • the ink fountain should also be able to be parked so far away from the ink fountain roller for cleaning and adjustment purposes that optimum operation is possible.
  • a storage for a ink fountain according to DE-OS 3 033 998 to store the ink fountain on both roller journals of the ink fountain roller between the two side frames.
  • a support ring for example in the form of a roller bearing, is provided on the roll neck, around which a holder for fastening the Color box is put around.
  • the adjustment is made with the help of a tensioning element that connects the holder (eg steel band) to the ink fountain.
  • the ink fountain is attached to the machine frame by means of retaining pins in enlarged holes on the ink fountain.
  • the coupling between the ink fountain and the holding pin is elastic. In this way, the ink fountain can be slightly lifted out of its frame-fixed bearings when it is placed against the ink fountain roller.
  • This arrangement has the disadvantage that relatively large forces have to be applied in order to be able to place the ink fountain securely against the surface of the ink fountain roller.
  • the forces must be at least as great that the ink fountain is set up with sufficient force even when fully loaded with printing ink. These forces act on the ink fountain roller at all times and of course bend it.
  • the deflection changes, however, in that a minimal deflection is recorded when the ink fountain is fully loaded and a maximum deflection of the ink fountain roller when the ink fountain is largely empty.
  • the tight guidance of the ink fountain on the ink fountain roller also does not allow the ink collection space below the metering elements to be designed in such a way that it is easy to clean and has a volume that is sufficient for a long service life.
  • the printing ink to be introduced into the ink fountain and its effect due to weight and hydrodynamics in connection with the manufacturing tolerances in relation to the ink fountain roller are to be considered as a particular problem for the exact positioning.
  • the object of the invention is therefore to improve a device according to the preamble of claim 1 so that its adjustment is largely independent of the weight of the printing ink to be introduced into the ink fountain, but thereby an exactly reproducible setting of the metering elements and a compensation of manufacturing tolerances on the ink fountain roller or Ink box allows, and otherwise an improvement in operation by further swiveling the ink box achieved.
  • FIG 1 the operative relationship between an ink fountain 1 and its holder on an ink fountain roller 2 is shown. This shows in particular how the forces from the ink fountain 1 and the holder are introduced into the ink fountain roller 2 or other elements.
  • the ink fountain 1 itself is supported on a support roller 3 fixed to the frame. This support roller 3 takes up the main weight of the ink fountain 1 and the printing ink present therein.
  • a bracket 4 Connected to the ink fountain 1 is a bracket 4 at the two ends of which cam rollers 5, 6 are provided.
  • the cam rollers 5, 6 run on the surface of the ink fountain roller 2.
  • a second bracket 7, which likewise carries a cam roller 8, is movably connected to this first bracket 4.
  • a suspension 9 is provided, which acts in such a way that the second bracket 7 is sprung with its cam roller 8 against the surface of the ink fountain roller 2.
  • the suspension is supported on the first bracket 4 and in this way pulls or presses its cam roller 5 against the surface of the ink fountain roller 2.
  • the arrangement of the cam rollers 5, 6, 8 is selected so that the first cam roller 5 lies in the plane , in which there are also color metering elements 10 of the ink fountain 1.
  • the spring-loaded cam roller 8 of the second bracket 7 lies diagonally or at least approximately diagonally with respect to this first cam roller 5.
  • the second cam roller 6 on the first bracket 4 is meanwhile located on the top of the ink fountain roller 2, so that its bearing force acts in a vertical direction on its surface.
  • the changes in the force effects on the ink fountain 1 due to the filling of printing ink are limited to a minimum.
  • the change in force on the ink fountain 1 or on the ink fountain roller 2 from the loading with printing ink is largely absorbed by the roller 3 which is fixed to the frame and which carries the ink fountain 1.
  • the remaining portion that is introduced into the ink fountain roller 2 via the cam roller 6 can no longer produce any significant bend there.
  • the ink fountain 1 Due to the low position of the pivot point, the ink fountain 1 can be pivoted particularly far back from the ink fountain roller 2. A paint drip pan on the front of the ink fountain 1 is then freely accessible on its surface.
  • the ink fountain can therefore be made larger because the ink fountain is first moved horizontally and only then swiveled. This means that the ink fountain is more receptive to running ink and also easier to clean.
  • the ink fountain bracket is shown constructed.
  • an ink fountain roller 14 with the ink fountain 15 is shown. Since the drawing is designed as a side view, the ink fountain 15 is covered in its essential parts by the ink fountain bracket.
  • the ink fountain 15 is supported with a support rail 16 attached to its underside in a swivel bearing 17 which is attached to the frame in a cross member 18.
  • a holding element which consists of brackets 20 and a cable bushing 21, is fastened to an ink fountain side wall 19.
  • two brackets 20 are arranged parallel to the ink fountain roller 14 in the axial direction.
  • a cam roller 23 is arranged on the axis 22 between the brackets 20 in the area of the ink metering elements 10.
  • a further cam roller 25 is arranged on a further axis 24.
  • a pivot bracket 26 is arranged on the same axis 24 and encompasses the cam roller 25.
  • a third cam roller 28 sits on the pivot bracket 26 at the outer end on an axis 27.
  • the opposite end of the pivot bracket 26 is shown in FIG an axis 29 connected to a spring support 30.
  • the spring support 30 is supported on the axle 29 with a plate spring assembly 31. It is connected at the other end in a pivot point 32 to an unlocking element 33.
  • the unlocking element 33 is held on an axis 34 between the brackets 20.
  • a handle 35 is arranged on the unlocking element 33 and can be displaced in the longitudinal direction against a spring.
  • a rubber buffer 36 is also attached to the unlocking element 33.
  • the parts unlocking element 33, spring support 30 and swivel bracket 26 form a lever system which can be pushed over.
  • the lever system can be pivoted into the overpressure position against the force of the plate spring assembly 31 in the swung-in state of the ink fountain 15, so that the cam roller 28 rests on the surface of the ink fountain roller 14.
  • the ink fountain 15 rests in this position on the pivot bearing 17 and the cam roller 25.
  • the focus of the ink fountain lies a little to the right next to the vertical above the pivot bearing 17, so that the entire ink fountain 15 rests almost on the ink fountain roller 14. This also ensures that the cam roller 23 rests securely on the surface of the ink fountain roller 14.
  • the cam roller 28 with the swivel bracket 26 is attached to the ink fountain roller 14 via the lever system for clamping the ink fountain 15. Basically, it is sufficient if the cam roller 28 lies diagonally opposite the cam roller 23. For safety reasons, but the encasement of the ink fountain roller 14 between cam roller 23 and cam roller 28 may, including the cam roller are slightly greater than 180 chosen o 25th
  • the ink fountain 15 If the ink fountain 15 is to be pivoted again, it only has to be pushed in the direction of the ink fountain roller 14 using the handles 35.
  • the rubber buffers 36 first hit the surface of the ink fountain roller 14. Then the handles 35 are to be pulled again against the force of the springs and the lever system comprising the unlocking element 33, spring support 30 and swivel bracket 26 can be swiveled back into the overpressed position to secure the ink fountain 15 on the ink fountain roller 14. At the same time, the rubber buffers 36 are pivoted downward from the surface of the ink fountain roller 14.
  • the brackets 20 encompass a roller bearing 42 which is mounted on the side frame 43.
  • the ink fountain lies in the region of the cam rollers 23 with the axis 22 of the cam rollers 23, which is extended outwardly as a stop 44, against further rubber buffers 45.
  • the rubber buffers 45 are mounted on a cable duct 46 fixed to the frame, which is opposite the cable duct 21 on the ink fountain 15.
  • the swivel bracket 26 is designed as a box-shaped part and carries the cam roller 28 between its side walls on the axis 27.
  • the cam roller 23 is arranged on the axis 22.
  • the side walls of the cable bushing 21 to the side of the cam roller 23 form the lower end of the bracket 20, which receive the cam roller 25 on the axis 24 and the swivel bracket 26 at their upper end.
  • the cable bushing 21 or the bracket 20 are connected directly to the ink fountain side wall 19, to which the ink metering elements 10 are also connected.
  • a drip plate 47 is indicated in front of the ink metering elements in FIG.
  • the arrangement from FIG. 5 also applies in mirror image to the other side of the ink fountain roller 14.
  • the cross member 18 is shown in plan view.
  • the support rail 16 and thus also the ink fountain 15 are supported on the cross member 18.
  • Swivel bearings 17 are embedded in the crossmember 18.
  • the pivot bearings 17 are inserted as separate bearing elements 48, 49 in the cross member 18.
  • the support rail 16 is slightly raised in the middle in the region of the bearing element 49.
  • a support surface 50 with a height of approximately 0.5 mm is therefore provided in the middle on the support rail 16.
  • the ink fountain 15 can tip laterally to the left or right onto one of the other bearing elements 48.
  • adjusting blocks 51 are provided on each side of the bearing elements 48, on each of which a counter-set screw 52 is arranged.
  • the set screws 52 are set so that a minimal lateral movement of the ink fountain 15 with its support rail 16 can be permitted.
  • a cover plate 53 is inserted so that the support rail 16 of the ink fountain 15 remains freely movable.
  • the handling of the ink fountain 15 is extremely simplified in this way, the load on the ink fountain roller 14 being reduced as much as possible.
  • the entire ink fountain 15 can be removed from the machine in the simplest way for assembly and disassembly purposes. When reinserting, no complex assembly work is necessary and the adjustment when it is placed against the ink fountain roller 14 is carried out automatically by the ink fountain 15. In addition, no more constraining forces are applied between the machine frame and the ink fountain roller.
  • the ink fountain 15 is set slightly higher or lower on the ink fountain roller 14. This results only in a slightly different position for the position of the ink metering elements 10 on the circumference of the ink fountain roller 14, but this position has no influence on the function of the entire arrangement.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Coating Apparatus (AREA)
  • Spray Control Apparatus (AREA)
  • Nozzles (AREA)
EP91104729A 1990-04-24 1991-03-26 Dispositif de dosage de l'encre avec encrier pivotable Expired - Lifetime EP0453792B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4012949A DE4012949C1 (fr) 1990-04-24 1990-04-24
DE4012949 1990-04-24

Publications (2)

Publication Number Publication Date
EP0453792A1 true EP0453792A1 (fr) 1991-10-30
EP0453792B1 EP0453792B1 (fr) 1994-07-06

Family

ID=6404928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91104729A Expired - Lifetime EP0453792B1 (fr) 1990-04-24 1991-03-26 Dispositif de dosage de l'encre avec encrier pivotable

Country Status (6)

Country Link
US (1) US5113762A (fr)
EP (1) EP0453792B1 (fr)
JP (1) JPH07102688B2 (fr)
AT (1) ATE108132T1 (fr)
DE (2) DE4012949C1 (fr)
ES (1) ES2057641T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4410305C2 (de) * 1994-03-25 1997-02-06 Roland Man Druckmasch Aufhängung für eine als Schutz vor den Druckwerkszylindern einer Druckmaschine dienenden Einrichtung
JP2005022106A (ja) * 2003-06-30 2005-01-27 Komori Corp ローラの支持装置
GB2430405A (en) * 2005-09-21 2007-03-28 Focus Label Machinery Ltd A printer ink cartridge
DE202007004839U1 (de) * 2006-04-21 2007-05-31 Ap Maschinen Ag Farbkasten für eine Druckmaschine
DE102010045406A1 (de) 2009-10-09 2011-04-14 Heidelberger Druckmaschinen Ag Vorrichtung zum Dosieren von Druckfarbe
CN102649347B (zh) * 2011-02-26 2016-08-03 海德堡印刷机械股份公司 印刷机中墨盒挠曲的补偿

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1111182A (en) * 1965-01-28 1968-04-24 Addressograph Multigraph Ink fountain for printing,duplicating or like machines
DE2756510A1 (de) * 1976-12-21 1978-06-22 Abraham N Cohen Vorrichtung zum einstellen der abstreichklinge an druckerpressen
EP0339711A2 (fr) * 1988-04-25 1989-11-02 Van Dam Machine B.V., Dispositif pour imprimer des objets par exemple des gobelets en matière synthétique et matériels semblables

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3033998A1 (de) * 1980-09-10 1982-04-15 Koenig & Bauer AG, 8700 Würzburg Lagerung fuer einen farbkasten einer rotationsdruckmaschine
DE3427909C2 (de) * 1984-07-28 1987-02-12 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbdosiereinrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1111182A (en) * 1965-01-28 1968-04-24 Addressograph Multigraph Ink fountain for printing,duplicating or like machines
DE2756510A1 (de) * 1976-12-21 1978-06-22 Abraham N Cohen Vorrichtung zum einstellen der abstreichklinge an druckerpressen
EP0339711A2 (fr) * 1988-04-25 1989-11-02 Van Dam Machine B.V., Dispositif pour imprimer des objets par exemple des gobelets en matière synthétique et matériels semblables

Also Published As

Publication number Publication date
JPH07102688B2 (ja) 1995-11-08
ES2057641T3 (es) 1994-10-16
JPH04224956A (ja) 1992-08-14
US5113762A (en) 1992-05-19
DE4012949C1 (fr) 1991-03-14
ATE108132T1 (de) 1994-07-15
DE59102095D1 (de) 1994-08-11
EP0453792B1 (fr) 1994-07-06

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