EP0621134A1 - A method and device for improving the function of a spray bar in a printing press - Google Patents
A method and device for improving the function of a spray bar in a printing press Download PDFInfo
- Publication number
- EP0621134A1 EP0621134A1 EP94106158A EP94106158A EP0621134A1 EP 0621134 A1 EP0621134 A1 EP 0621134A1 EP 94106158 A EP94106158 A EP 94106158A EP 94106158 A EP94106158 A EP 94106158A EP 0621134 A1 EP0621134 A1 EP 0621134A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spray bar
- nozzles
- spray
- cover
- printing press
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F35/00—Cleaning arrangements or devices
- B41F35/04—Cleaning arrangements or devices for inking rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
Definitions
- This invention relates to a method of improving the function of a spray bar, intended for spraying a fluid on a roller in a printing press. It also relates to devices for carrying out this method.
- the main object of the invention is to improve the function of a spray bar for spraying an ink removing solvent on an inking roller, but the teachings of the invention is equally applicable to other spray bars.
- a spray bar may be arranged adjacent to the uppermost roller or drum of an inking device or inking train in a printing press.
- an inking device comprises a number of rollers and/or drums for the purpose of conveying printing ink from a supply thereof to the printing cylinders, normally in a substantially vertical direction.
- the inking device has to be cleaned from ink, for example when a new colour is to be employed in the printing process.
- a cleaning may be performed in that ink removing solvent is sprayed on the uppermost roller or drum in the inking device by the spray bar provided with nozzles for that purpose.
- the drums and rollers are rotated but are disconnected from the ink supply and the printing cylinders, and the ink removed by the solvent can be scraped off by cleaning blades and collected in trays.
- the spray bar is mounted adjacent a roller, which during the printing process rotates at a considerable speed with ink thereon, it is subjected to ink mist and contaminants, which may disturb the function of the nozzles, when they later shall spray the washing or ink removing solvent.
- the object of the invention is to remove the drawback with clogged nozzles in the spray bar.
- a preferred device for carrying out this shielding off is characterized in that a cover provided with openings corresponding to the nozzles on the spray bar is slidably arranged on the spray bar over the nozzles so as to be movable between a first position, in which the nozzles can spray through the openings, and a second position, in which the nozzles are covered.
- the cover may be connected to a pneumatic cylinder for its movement.
- the spray bar may be arranged in a casing having a pivotable lid movable between a first open position, in which the nozzles can spray, and a second closed position.
- a box with open top may be arranged below the spray bar, which is rotatable from its operative position to a position with the nozzles protected in the box.
- Figs 1a and 1b in top views of a spray bar with a cover illustrate the principle of a preferred embodiment
- Figs 2a, 2b and 2c are side views of a spray bar with a cover according to the preferred embodiment in three operating positions
- Fig 3 is a view, partly in section, along the line III-III in Fig 2a
- Fig 4a and 4b are side views, partly in section of another embodiment of the invention in two positions
- Figs 5a and 5b are side views, partly in section, of still another embodiment of the invention in two positions.
- a spray bar 1 with spray nozzles 2 is shown in a top view in Figs 1a and 1b.
- Such a spray bar 1 is to be mounted adjacent an inking roller in a printing press for the purpose of spraying ink removing solvent on the roller.
- a cover 3 is slidably arranged on the spray bar 1 above the spray nozzles 2 and is provided with openings 4 corresponding to the nozzles 2.
- the cover 3 is shown in a position relative to the spray bar 1 that enables the nozzles to spray its solvent through the openings 4.
- Figs 2a-c a practical arrangement with a spray bar 1 mounted in a printing press is shown in side views. Only Fig 2a is provided with reference numerals for the sake of clarity.
- the spray bar 1 is mounted by means of a left attachment 5 and a right attachment 6 in a printing press frame 7.
- the spray bar 1 is connected to a conduit in the right attachment 6 for pressurized solvent by means of a quick-coupling 8.
- the right attachment 6 also contains a pneumatic cylinder, whose piston rod 9 is connected to a bracket 10 on the cover 3, which accordingly can be displaced in the way described above with reference to Figs 1a and 1b.
- the positions shown in Figs 1a and 1b correspond to those according to Fig 2a and 2b, respectively.
- connection between the piston rod 9 and the bracket 10 may preferably be performed by means of a spring-biassed connection member 11, which may be pivoted from the position shown in Figs 2a and 2b, in which it is transverse to the piston rod 9 and connects the latter to the bracket 10, to the position shown in Fig 2c, in which it is coaxial with the piston rod 9 and can slide through the hole in the bracket 10 for disconnection of the cover 3 and thus the whole spray bar 1.
- a spring-biassed connection member 11 which may be pivoted from the position shown in Figs 2a and 2b, in which it is transverse to the piston rod 9 and connects the latter to the bracket 10, to the position shown in Fig 2c, in which it is coaxial with the piston rod 9 and can slide through the hole in the bracket 10 for disconnection of the cover 3 and thus the whole spray bar 1.
- Fig 2c illustrates how the cover 3 is disconnected from the piston rod 9 and the quick-coupling 8 decoupled by sliding the spray bar 1 to the left in the left attachment 5 against a compression spring (not shown) so that the spray bar 1 can be removed, for example for cleaning.
- Fig 3 is a view along the line III-III in Fig 2a.
- a nozzle 2 is arranged in the spray bar 1, whose lower part or part to the right in Fig 3 is a tube for conveying the solvent to the nozzles.
- the cover 3 with its openings 4 is slidably arranged on the spray bar 1.
- the cover bracket 10 is connected to the piston rod 9, extending from the right attachment 6, by means of the connection member 11.
- Figs 4a and 4b an alternative embodiment is shown in section.
- the spray bar 1 with its nozzles 2 is fixedly mounted in a casing 12 by means of brackets 13.
- a lid 14 is pivotably connected to the casing 12 by means of a hinge 15.
- the lid 14 may be pivoted between an open position shown in Fig 4a and a closed position shown in Fig 4b by means of for example a pneumatic cylinder 16.
- FIGs 5a and 5b A slightly different embodiment is shown in Figs 5a and 5b.
- the spray bar 1 with its nozzles 2 is rotatably mounted, whereas a shielding means in the form of a box 17 with open top is fixed. From its operative position shown in Fig 5a the spray bar 1 may be rotated to the position shown in Fig 5b, where the nozzles 2 are protected in the box 17.
Landscapes
- Rotary Presses (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
- This invention relates to a method of improving the function of a spray bar, intended for spraying a fluid on a roller in a printing press. It also relates to devices for carrying out this method.
- The main object of the invention is to improve the function of a spray bar for spraying an ink removing solvent on an inking roller, but the teachings of the invention is equally applicable to other spray bars.
- A spray bar may be arranged adjacent to the uppermost roller or drum of an inking device or inking train in a printing press. Such an inking device comprises a number of rollers and/or drums for the purpose of conveying printing ink from a supply thereof to the printing cylinders, normally in a substantially vertical direction.
- Rather frequently the inking device has to be cleaned from ink, for example when a new colour is to be employed in the printing process. Such a cleaning may be performed in that ink removing solvent is sprayed on the uppermost roller or drum in the inking device by the spray bar provided with nozzles for that purpose. During this process the drums and rollers are rotated but are disconnected from the ink supply and the printing cylinders, and the ink removed by the solvent can be scraped off by cleaning blades and collected in trays. By this automated process the need for manual cleaning has been eliminated.
- As the spray bar is mounted adjacent a roller, which during the printing process rotates at a considerable speed with ink thereon, it is subjected to ink mist and contaminants, which may disturb the function of the nozzles, when they later shall spray the washing or ink removing solvent.
- The object of the invention is to remove the drawback with clogged nozzles in the spray bar.
- This is according to the invention attained in that the nozzles of the spray bar are shielded off from ink mist and other contaminants except when fluid is to be sprayed.
- A preferred device for carrying out this shielding off is characterized in that a cover provided with openings corresponding to the nozzles on the spray bar is slidably arranged on the spray bar over the nozzles so as to be movable between a first position, in which the nozzles can spray through the openings, and a second position, in which the nozzles are covered. The cover may be connected to a pneumatic cylinder for its movement.
- As an alternative, the spray bar may be arranged in a casing having a pivotable lid movable between a first open position, in which the nozzles can spray, and a second closed position.
- As a further alternative, a box with open top may be arranged below the spray bar, which is rotatable from its operative position to a position with the nozzles protected in the box.
- The invention will be described in further detail below under reference to the accompanying drawings, in which Figs 1a and 1b in top views of a spray bar with a cover illustrate the principle of a preferred embodiment, Figs 2a, 2b and 2c are side views of a spray bar with a cover according to the preferred embodiment in three operating positions, Fig 3 is a view, partly in section, along the line III-III in Fig 2a, Fig 4a and 4b are side views, partly in section of another embodiment of the invention in two positions, and Figs 5a and 5b are side views, partly in section, of still another embodiment of the invention in two positions.
- A
spray bar 1 withspray nozzles 2 is shown in a top view in Figs 1a and 1b. Such aspray bar 1 is to be mounted adjacent an inking roller in a printing press for the purpose of spraying ink removing solvent on the roller. Acover 3 is slidably arranged on thespray bar 1 above thespray nozzles 2 and is provided withopenings 4 corresponding to thenozzles 2. In Fig 1a thecover 3 is shown in a position relative to thespray bar 1 that enables the nozzles to spray its solvent through theopenings 4. In Fig 1b, on the other hand, thecover 3 has been displaced relative to thespray bar 1, so that all nozzles are covered; this is the position chosen at all times when the inking roller performs its normal function to convey printing ink, which may reach the spray bar and its nozzles in the form of ink mist, unless they are covered. - In Figs 2a-c a practical arrangement with a
spray bar 1 mounted in a printing press is shown in side views. Only Fig 2a is provided with reference numerals for the sake of clarity. - The
spray bar 1 is mounted by means of aleft attachment 5 and aright attachment 6 in aprinting press frame 7. Thespray bar 1 is connected to a conduit in theright attachment 6 for pressurized solvent by means of a quick-coupling 8. Theright attachment 6 also contains a pneumatic cylinder, whosepiston rod 9 is connected to abracket 10 on thecover 3, which accordingly can be displaced in the way described above with reference to Figs 1a and 1b. The positions shown in Figs 1a and 1b correspond to those according to Fig 2a and 2b, respectively. - The connection between the
piston rod 9 and thebracket 10 may preferably be performed by means of a spring-biassedconnection member 11, which may be pivoted from the position shown in Figs 2a and 2b, in which it is transverse to thepiston rod 9 and connects the latter to thebracket 10, to the position shown in Fig 2c, in which it is coaxial with thepiston rod 9 and can slide through the hole in thebracket 10 for disconnection of thecover 3 and thus thewhole spray bar 1. - Fig 2c illustrates how the
cover 3 is disconnected from thepiston rod 9 and the quick-coupling 8 decoupled by sliding thespray bar 1 to the left in theleft attachment 5 against a compression spring (not shown) so that thespray bar 1 can be removed, for example for cleaning. - Fig 3 is a view along the line III-III in Fig 2a. A
nozzle 2 is arranged in thespray bar 1, whose lower part or part to the right in Fig 3 is a tube for conveying the solvent to the nozzles. Thecover 3 with itsopenings 4 is slidably arranged on thespray bar 1. Thecover bracket 10 is connected to thepiston rod 9, extending from theright attachment 6, by means of theconnection member 11. - It should be pointed out that - without departing from the gist of the invention - the
discrete nozzles 2 in thespray bar 1 may be replaced by holes in a tube extending longitudinally in the spray bar". - In Figs 4a and 4b an alternative embodiment is shown in section. Here the
spray bar 1 with itsnozzles 2 is fixedly mounted in acasing 12 by means ofbrackets 13. Alid 14 is pivotably connected to thecasing 12 by means of ahinge 15. Thelid 14 may be pivoted between an open position shown in Fig 4a and a closed position shown in Fig 4b by means of for example apneumatic cylinder 16. - A slightly different embodiment is shown in Figs 5a and 5b. Here the
spray bar 1 with itsnozzles 2 is rotatably mounted, whereas a shielding means in the form of abox 17 with open top is fixed. From its operative position shown in Fig 5a thespray bar 1 may be rotated to the position shown in Fig 5b, where thenozzles 2 are protected in thebox 17.
Claims (7)
- A method of improving the function of a spray bar (1), intended for spraying a fluid on a roller in a printing press, characterized in that nozzles (2) of the spray bar (1) are shielded off from ink mist and other contaminants except when fluid is to be sprayed.
- A device for carrying out the method according to claim 1 for improving the function of a spray bar (1), intended for spraying a fluid on a roller in a printing press, characterized by means (3; 14; 17) for shielding off the nozzles (2) of the spray bar (1) from ink mist and other contaminants.
- A device according to claim 2, characterized in that a cover (3) provided with openings (4) corresponding to the nozzles (2) on the spray bar (1) is slidably arranged on the spray bar over the nozzles so as to be movable between a first position, in which the nozzles can spray through the openings, and a second position, in which the nozzles are covered.
- A device according to claim 3, characterized in that the cover (3) is connected to a pneumatic cylinder (9) for its movement between the two positions.
- A device according to claim 4, characterized in that after the disconnection of the cover (3) from the pneumatic cylinder (9) the spray bar (1) as a unit may be removed by sliding it in one direction against the force of a spring.
- A device according to claim 2, characterized in that the spray bar (1) is arranged in a casing (12) having a pivotable lid (14) movable between a first open position, in which the nozzles (2) can spray, and a second closed position.
- A device according to claim 2, characterized in that a box (17) with open top is arranged below the spray bar (1), which is rotatable from its operative position to a position with the nozzles (2) protected in the box.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9301360A SE507913C2 (en) | 1993-04-23 | 1993-04-23 | Method and apparatus for improving the operation of a spray beam in a printing press |
SE9301360 | 1993-04-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0621134A1 true EP0621134A1 (en) | 1994-10-26 |
EP0621134B1 EP0621134B1 (en) | 1997-11-12 |
Family
ID=20389682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94106158A Expired - Lifetime EP0621134B1 (en) | 1993-04-23 | 1994-04-21 | A device for improving the function of a spray bar in a printing press |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0621134B1 (en) |
DE (1) | DE69406707T2 (en) |
SE (1) | SE507913C2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997026996A2 (en) * | 1996-01-23 | 1997-07-31 | Koenig & Bauer-Albert Ag | Method and device for keeping clean ends of spray damping mechanism nozzles on a rotary printing press |
DE10213109A1 (en) * | 2002-03-23 | 2003-10-09 | Baldwin Germany Gmbh | Printing machine spray device for an offset printing machine comprises a heat-exchanger path along which supplied fountain water and removed fountain water are guided together in heat exchange |
WO2005000584A1 (en) * | 2003-06-30 | 2005-01-06 | Baldwin Jimek Ab | Spray nozzle |
ITMI20110277A1 (en) * | 2011-02-24 | 2012-08-25 | Mec Bolondi Ivano Off | NOZZLE WASHING DEVICE WITH SHIELDING |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3897726A (en) * | 1971-11-24 | 1975-08-05 | Heidelberger Druckmasch Ag | Washing device for a blanket cylinder of an offset printing press |
-
1993
- 1993-04-23 SE SE9301360A patent/SE507913C2/en not_active IP Right Cessation
-
1994
- 1994-04-21 EP EP94106158A patent/EP0621134B1/en not_active Expired - Lifetime
- 1994-04-21 DE DE69406707T patent/DE69406707T2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3897726A (en) * | 1971-11-24 | 1975-08-05 | Heidelberger Druckmasch Ag | Washing device for a blanket cylinder of an offset printing press |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997026996A2 (en) * | 1996-01-23 | 1997-07-31 | Koenig & Bauer-Albert Ag | Method and device for keeping clean ends of spray damping mechanism nozzles on a rotary printing press |
WO1997026996A3 (en) * | 1996-01-23 | 1997-10-23 | Koenig & Bauer Albert Ag | Method and device for keeping clean ends of spray damping mechanism nozzles on a rotary printing press |
US6067908A (en) * | 1996-01-23 | 2000-05-30 | Koenig & Bauer-Albert Aktiengesellschaft | Method and device for keeping clean ends of spray damping mechanism nozzles on rotary printing press |
DE10213109A1 (en) * | 2002-03-23 | 2003-10-09 | Baldwin Germany Gmbh | Printing machine spray device for an offset printing machine comprises a heat-exchanger path along which supplied fountain water and removed fountain water are guided together in heat exchange |
DE10213109B4 (en) * | 2002-03-23 | 2005-02-17 | Baldwin Germany Gmbh | Printing machine spraying device |
WO2005000584A1 (en) * | 2003-06-30 | 2005-01-06 | Baldwin Jimek Ab | Spray nozzle |
ITMI20110277A1 (en) * | 2011-02-24 | 2012-08-25 | Mec Bolondi Ivano Off | NOZZLE WASHING DEVICE WITH SHIELDING |
Also Published As
Publication number | Publication date |
---|---|
EP0621134B1 (en) | 1997-11-12 |
DE69406707D1 (en) | 1997-12-18 |
DE69406707T2 (en) | 1998-03-12 |
SE507913C2 (en) | 1998-07-27 |
SE9301360L (en) | 1994-10-24 |
SE9301360D0 (en) | 1993-04-23 |
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