EP0946368A2 - Farbkasten - Google Patents
FarbkastenInfo
- Publication number
- EP0946368A2 EP0946368A2 EP97954705A EP97954705A EP0946368A2 EP 0946368 A2 EP0946368 A2 EP 0946368A2 EP 97954705 A EP97954705 A EP 97954705A EP 97954705 A EP97954705 A EP 97954705A EP 0946368 A2 EP0946368 A2 EP 0946368A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- ink fountain
- ink
- paint roller
- thickness
- 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
Links
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000003973 paint Substances 0.000 claims description 35
- 238000005452 bending Methods 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 230000001939 inductive effect Effects 0.000 claims description 3
- 238000007774 anilox coating Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241001207300 Schnella Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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
- B41F31/027—Ink rail devices for inking ink rollers
-
- 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
- B41F31/022—Ink level control 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
- B41F33/0063—Devices for measuring the thickness of liquid films on rollers or cylinders
Definitions
- the invention relates to a method for determining the presence of a paint roller in an unpressurized ink fountain of a rotary printing press according to the preamble of claim 1 and several associated egg nich directions.
- EP 06 63 293 A1 discloses a device for inking an anilox roller, in which printing ink rotates about a longitudinal axis running parallel to the anilox roller in a fully filled ink chamber with a circular cross section.
- a negative squeegee and a positive squeegee are provided.
- the invention has for its object to provide a method and a device with which it can be determined whether NEN run during the Maschi in a paint box a paint roller bi Idet.
- the advantages that can be achieved with the invention are, in particular, that the thickness of the during Machine roller forming color roll determined continuously or at intervals and an electrical, optical and / or acoustic signal is output in the event of a deviation from a target value. Depending on the amount and the direction of the deviation, either a signal for controlling the ink supply or a warning signal for the operating personnel is issued.
- Fig. 1 is a schematic representation of a
- Fig. 2 further embodiment variants of devices to 9 for performing the method.
- An open (unpressurized) ink fountain 1 has left and right side walls 2; 3 and two sealing end walls 6 adapted to the periphery 21 of a driven roller 4; 7.
- the ink fountain 1 extends over the entire length of the roller 4, the z. B. can be designed as an anilox roller or as a Ti ef Druckzy l i nde r.
- a working squeegee 8 and a closing squeegee 9 are interchangeably attached.
- ink fountain 1 there is preferably highly viscous printing ink 11 (greater than 60 poise), which during masc h nen l on e s according to the direction of rotation of the roller 4, z. B. counterclockwise A forms on the left inside 17 of the side wall 2 and the inside width b and length of the squeegee 8 ink roller 12 forms. The squeegee edge of the squeegee 8 scrapes off printing ink from the surface 21 of the roller 4.
- the rotating ink roller 12 has a desired thickness d1 at a specific point in its length, which is proportional to the printing ink used up and refilled from the ink fountain 1.
- a narrow, fixed or fixed device 28 is measured continuously or at adjustable intervals and the result of the measurement is evaluated.
- a distance measurement is carried out either by means of optical or acoustic means, e.g. B. laser beams or ultrasound, which are emitted by the device 28 and directly and without touching the surface 21 of the ink roller 12.
- the thickness d1 of the ink roller 12 is then determined on the basis of the known distance between the surface of the roller 4 and the device 28.
- a paint roller 32 with a reduced thickness d2 forms - dashed line illustration -.
- the device 28 emits a signal which sets in motion a non-indicated ink pump which supplies the ink fountain 1 with new printing ink via the ink inlet 27.
- the device 28 is connected by means of an electrical or optical line 29 to the Masc h i nen line.
- a preselection 30; 31 the time to be measured 11 and the fixed distance value can be set.
- the device 28 can, as shown in dashed lines in the drawing, be arranged so as to protrude beyond the upper edge 38 of the ink fountain 1. It is also possible to provide measurements with the device operating on a capacitive basis.
- the device 28 can also be fastened along the ink fountain 1 on a roller parallel
- the guide rail can be moved manually or by a motor.
- a paint roller feeler lever 23 is articulated on a bearing 18 fastened to the inside 17 of the left side wall 2, the underside 36 of which rests tangentially on the periphery 21 of the paint roller 12.
- a distance between the top 37 of the paint roller feeler lever 23 and the device 28 is measured indirectly and with contact, so that taking into account the material thickness of the paint roller feeler lever 23, the different thicknesses d1 to d4 of the paint rollers 12; 32; 33; 34 have it determined.
- Fa rbro l l en- Füh Ihebe l 23 be designed as a two-armed feeler lever 16, the second arm 22 in the direction
- Opening of the ink fountain 1 points and at an angle
- Alpha e.g. B. from 130 ° to 140 ° with the first arm 23 in
- Camp 18 converges.
- Front 41 and the second arm 22 in turn in an indirect and contact manner while the
- the device 39 can be designed in the same way as the device 28.
- the two-armed feeler lever 16 at the end of its second arm 22 has a lug 24, which, for. B. with an inductive device 13 in be rest-free contact.
- the flag 24 can consist of sheet iron.
- the underside 36 of the first arm 23 of the two-armed feeler lever 16 lies tangentially on the paint roller 12 with the thickness d1, so that the feeler lever 16 is in position I.
- the amount of ink decreases, so that an ink roller 32 has a reduced thickness d2.
- the two-armed feeler lever 16 is in position II - shown in broken lines -.
- a signal for controlling the ink feed 27 is output by the device 13, so that the ink roller again reaches the target thickness d1.
- the device 13 is fixed to the side frame or ink fountain and is connected to the machine via an electrical line 26.
- the device can of course also be set so that the ink supply 27 can be switched on immediately for a short time even with a slight reduction in the desired thickness d1.
- the thickness of the inking roller is preferably spaced continuously or at preselectable times scanned.
- z. B. of five minutes using a known evaluation circuit how many intervals d1; d2; d1 occur in correct printing operation - taking into account the surface area of the printing medium and the machine speed. For example, five intervals occur in the specified period of five minutes.
- the principle of the method is that the ink fountain 2 with printing ink, for. B. highly viscous, is filled that during the Bet r i ebszus tandes part of the lower ink fountain 2 is free of printing ink, while in the other lower part of the ink fountain 2 a paint roller 12 is formed.
- This state is determined and evaluated according to further exemplary embodiments.
- FIG. 2 After a fifth exemplary embodiment (FIG. 2), for continuous or intermittent contactless measurement of the thickness d1 of the paint roller 12 above the ink fountain 1, an angle beta of approximately 20 ° in Circumference direction of the roller 4 pivotable measuring device 39, z. B. a U 11 Schnella 11 sensor or running zei tsensor arranged.
- This measuring device 39 measures the distance to the planes C and E. On the basis of a predetermined desired difference between the two planes C; E to one another can be determined whether there is enough printing ink 11 or whether a paint roller 12 has formed at all.
- a circumferential direction of the roller 4 is increased by an amount f, z. B. half a width of the ink fountain 1 correspondingly, a measuring device 39 slidably arranged.
- the measuring device 39 operates as indicated in the fifth embodiment, and can be moved back and forth on a fixed rail 11 by means of a known linear drive (not shown).
- measuring devices 39 which are spaced apart from one another by an amount f are fixedly arranged above the ink fountain 1 in the circumferential direction of the roller 4.
- the left measuring device 39 determines the distance from the plane C and the right measuring device 39 determines the distance from the plane E.
- the measuring method works as described in the fifth embodiment.
- a CCD camera 41 is arranged above the ink fountain 1, with which an actual formation of the ink roller 12 is determined which is compared with a target formation of the paint roller (12) stored in a computer. In the event of deviations lying outside the tolerance range, corresponding signals are emitted, as in the previous exemplary embodiments.
- a measuring device 39 is arranged in a plane G located above the ink fountain 1, which cooperates with a mirror 42 located above the ink fountain 1.
- the mirror 42 can be pivoted through an angle Beta of approximately 20 °, e.g. B. by means of an electromagnet, not shown, which can be reset to the initial position by spring force.
- the mirror 42 either directs the measuring beam onto the surface 21 of the paint roller 12 (plane C) or onto the plane E.
- an interval measurement of the thickness d1 of the ink roller 12 in a plane C is carried out by an angle lever 43 fixed to the ink fountain and touching the surface 21 of the ink roller 12 in the radial direction.
- B L-shaped.
- a first leg 46 of the angle lever 43 is attached to the top of the side wall 2 and carries a strain gauge 44.
- the second leg 47 runs vertically and parallel to the side wall 2.
- the plane C is approximately at a distance above the surface of the roller 4, which corresponds to the diameter d1 of a paint roller 12 (FIG. 7). It is also possible to arrange the strain gauge 44 on the second leg 47 of the angle lever 43.
- the side wall 2 and / or 3 is withdrawn towards the interior of the ink fountain 1.
- the resulting depression is covered by a bending plate 48. It is attached to the upper part of the side wall 2 and 3 and forms with its lower end and the inner surface of the doctor blades 8 and 9 a very small gap or lies on them.
- Strain gauge 49 applied. By touching the rotating paint roller 12 with the bending plate 48, a bending moment is generated, which the strain gauge 49 detects and emits a corresponding signal, which is evaluated. Vibrations can also be detected by the strain gauge, which are evaluated and evaluated as an indication of a rotational movement of the paint roller 12.
- the distance h can be up to a few millimeters.
- At least one of the side walls has a load cell.
- a signal is output.
- the device operates as in the subject of FIG. 8.
- a bending plate 51 is now used, which is attached to the top and bottom of the side wall 2 and / or 3 and thus a recess or opening 52 in them - tight against ink ingress - covers.
- the “bending plate” can also be carried out by removing material from the side wall 2 and / or 3 from the outside. As a result, the side wall 2; 3 hydrodynamic forces generated by the rotating paint roller 2 are subjected to bending. These generated bending stresses can be detected and evaluated by means of strain gauges 49. They are a measure of whether the paint roller 2 is rotating. This can also be determined in a different way via the strain gauges 49. This is because the vibrations through which the rotating paint roller 2 excites the bending plate 51 can also be electronically evaluated from the signals of the strain gauges.
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19653813 | 1996-12-21 | ||
DE19653813 | 1996-12-21 | ||
PCT/DE1997/003000 WO1998028136A2 (de) | 1996-12-21 | 1997-12-22 | Farbkasten |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0946368A2 true EP0946368A2 (de) | 1999-10-06 |
EP0946368B1 EP0946368B1 (de) | 2001-02-28 |
Family
ID=7815876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97954705A Expired - Lifetime EP0946368B1 (de) | 1996-12-21 | 1997-12-22 | Farbkasten |
Country Status (5)
Country | Link |
---|---|
US (1) | US6276275B1 (de) |
EP (1) | EP0946368B1 (de) |
JP (1) | JP3187063B2 (de) |
DE (1) | DE59703081D1 (de) |
WO (1) | WO1998028136A2 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3299524B2 (ja) * | 1998-10-06 | 2002-07-08 | 理想科学工業株式会社 | 孔版印刷機及び孔版印刷機の排版装置並びに孔版印刷システム |
AU2002213020A1 (en) * | 2000-10-05 | 2002-04-15 | Air Motion Systems, Inc. | System and method of cleaning impression cylinders of a sheet-fed lithographic printing press |
US6773201B2 (en) * | 2001-11-20 | 2004-08-10 | Safety Systems, Inc. | Soft wall for race tracks |
JP2006123345A (ja) * | 2004-10-28 | 2006-05-18 | Tohoku Ricoh Co Ltd | インキ量検知装置、インキ量検知方法、印刷装置および孔版印刷装置 |
JP2008126466A (ja) * | 2006-11-20 | 2008-06-05 | Tohoku Ricoh Co Ltd | インキ検知装置、インキ検知方法、インキ補給装置および印刷装置 |
KR101865925B1 (ko) * | 2011-10-25 | 2018-06-08 | 엘지이노텍 주식회사 | 인쇄 장치 및 인쇄 방법 |
US11944996B2 (en) | 2019-01-13 | 2024-04-02 | Orbotech Ltd. | System and method for coating substrates |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2399688A (en) | 1942-03-09 | 1946-05-07 | Standard Register Co | Ink fountain |
US3631800A (en) | 1968-07-30 | 1972-01-04 | Addressograph Multigraph | Ink system for printing machines |
US3730089A (en) * | 1971-06-16 | 1973-05-01 | Itek Corp | Ink monitoring apparatus |
JPS5555869A (en) | 1978-10-18 | 1980-04-24 | Riso Kagaku Corp | Detector for amount of ink |
JPS62116151A (ja) | 1985-11-15 | 1987-05-27 | Toray Ind Inc | 印刷機におけるインキ残量検出装置 |
JPS62244640A (ja) | 1986-04-17 | 1987-10-26 | Toray Ind Inc | 印刷機のインキ残量検出装置 |
JPH0619249B2 (ja) | 1987-06-11 | 1994-03-16 | 住友重機械工業株式会社 | インキ膜厚計測装置 |
JPH06186072A (ja) | 1992-12-17 | 1994-07-08 | Riso Kagaku Corp | 孔版印刷装置のインキ量検出装置 |
DE4401365A1 (de) | 1994-01-18 | 1995-07-20 | Roland Man Druckmasch | Vorrichtung zur Einfärbung einer Rasterwalze |
DE19512727B4 (de) | 1995-04-05 | 2006-05-24 | Heidelberger Druckmaschinen Ag | Farbkasten im Farbwerk von Druckmaschinen |
-
1997
- 1997-12-22 WO PCT/DE1997/003000 patent/WO1998028136A2/de active IP Right Grant
- 1997-12-22 DE DE59703081T patent/DE59703081D1/de not_active Expired - Fee Related
- 1997-12-22 US US09/319,946 patent/US6276275B1/en not_active Expired - Fee Related
- 1997-12-22 JP JP52823998A patent/JP3187063B2/ja not_active Expired - Fee Related
- 1997-12-22 EP EP97954705A patent/EP0946368B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9828136A3 * |
Also Published As
Publication number | Publication date |
---|---|
US6276275B1 (en) | 2001-08-21 |
EP0946368B1 (de) | 2001-02-28 |
JP3187063B2 (ja) | 2001-07-11 |
DE59703081D1 (de) | 2001-04-05 |
WO1998028136A2 (de) | 1998-07-02 |
JP2000505748A (ja) | 2000-05-16 |
WO1998028136A3 (de) | 1998-11-05 |
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