EP1777184A1 - Système de transport de feuilles - Google Patents
Système de transport de feuilles Download PDFInfo
- Publication number
- EP1777184A1 EP1777184A1 EP05022658A EP05022658A EP1777184A1 EP 1777184 A1 EP1777184 A1 EP 1777184A1 EP 05022658 A EP05022658 A EP 05022658A EP 05022658 A EP05022658 A EP 05022658A EP 1777184 A1 EP1777184 A1 EP 1777184A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheets
- sheet
- transporting system
- guidance
- transport path
- 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.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F22/00—Means preventing smudging of machine parts or printed articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F21/00—Devices for conveying sheets through printing apparatus or machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
- B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
- B65H29/041—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands and introducing into a pile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/52—Stationary guides or smoothers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/60—Other elements in face contact with handled material
- B65H2404/61—Longitudinally-extending strips, tubes, plates, or wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/20—Location in space
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2601/00—Problem to be solved or advantage achieved
- B65H2601/20—Avoiding or preventing undesirable effects
- B65H2601/25—Damages to handled material
- B65H2601/251—Smearing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/03—Image reproduction devices
- B65H2801/21—Industrial-size printers, e.g. rotary printing press
Definitions
- a sheet-fed printing and/or processing machine commonly includes a printing and/or processing unit for printing and/or processing the sheets and, optionally, one or more additional processing modules (such as an inspection module, a drying device, a laser marking or perforating device, or any other processing device for processing the sheets) disposed in the sheet delivery path between the printing and/or processing unit and a sheet delivery unit.
- additional processing modules such as an inspection module, a drying device, a laser marking or perforating device, or any other processing device for processing the sheets
- Known delivery units usually include a plurality of delivery piles where the sheets are delivered.
- a sheet-fed printing and/or processing machine with inspection capability is provided with at least three delivery piles, one delivery pile for sheets having a defect, and two delivery piles, filled alternately, for the sheets which are considered meeting the quality requirements.
- these guide means can advantageously be arranged so as to come in contact only with the margins between the prints in order to avoid soiling of the prints themselves.
- an object of the invention is a sheet transporting system of the type defined above, wherein the sheet guidance rods are mounted on transversely movable rod holders, and wherein these rod holders are coupled to driving means adapted to adjust the transverse positions of the guidance rods.
- each rod holder is slidingly mounted on a crossbar and is coupled to a motor and to a gearbox, the gearbox engaging a transverse threaded shaft member.
- the driving means of the rod holders are connected to a common control unit for controlling the transverse positions of the guidance rods.
- each guidance rod is held between at least a corresponding pair of rod holders, spaced apart longitudinally along the sheet transport path, transverse displacement of each guidance rod being controlled by simultaneous displacement of the said corresponding pair of rod holders.
- the sheets may additionally be drawn against the guidance rods by means of air depression caused by suction means arranged on the same side of the sheets as the guidance rods.
- the sheets may be pressed against the guidance rods by means of air overpressure caused by blowing means facing the sheets and located on the side of the sheets opposite to the guidance rods.
- the blowing means include perforated blowing pipes arranged transversely to the transport path.
- the transporting system comprises a number of aggregate modules arranged in line along the sheet transport path, each module comprising at least a transverse row of said rod holders.
- the sheet transporting system may in particular be used for transporting sheets from a printing unit to a delivery unit of a printing machine, by adopting a configuration wherein the sheet transporting system comprises at least one aggregate top transport module, where the sheets are transported with a freshly printed side facing downward, the other side of the sheets facing the guidance rods.
- the sheet transporting system further comprises a reversal module for reversing the sheets, where the sheets are guided by guidance rods shaped as curved elements, the reversal module delivering the sheets to the delivery unit with the freshly printed side facing up.
- Figure 1 illustrates the general arrangement of the units constituting an intaglio printing machine.
- a sheet feeder unit 1 a printing unit 2, including an impression cylinder 2a, a plate cylinder 2b and a collecting cylinder 2c.
- an inking carriage 3 suspended under a frame 4.
- the sheets are fed from the sheet feeder unit 1 to the impression cylinder 2a of the printing unit 2 which carries the sheets one after the other to the printing nip between the impression cylinder 2a and the plate cylinder 2b where printing of the sheets occurs.
- the impression cylinder 2a hands over the printed sheets to a sheet transporting system consisting in this example of an endless chain conveyor system with endless chains and gripper bars, generally designated by 5, as such known in the art.
- the transporting system 5 carries the sheets above the frame 4, in front of an inspection unit 6 and a drying unit 7, and down to the delivery unit 8.
- the sheets are transferred from the impression cylinder 2a to the transporting system 5, and transported by the same in front of the inspection unit 6 and the drying unit 7 with the freshly printed side facing down. Thereafter, the sheets run above the delivery unit 8, still with the freshly printed side facing down, are reversed at the outermost left position of the machine and delivered to the appropriate delivery pile with the freshly printed side facing up.
- Gripper release devices are disposed in each delivery module so as to selectively deliver a sheet in the desired delivery pile, such gripper release devices are described for example in Applicant's patent application PCT/IB2005/001113, incorporated herein by reference.
- the return path of the endless chain conveyor system 5, from the delivery unit 8 back to the printing unit 2, is illustrated in figure 1 by dash-dot line 9.
- a top module 5a is located above the frame 4 of the inking carriage 3, providing an interior space accommodating the inspection unit 6 and the drying device 7.
- a delivery module 5b is mounted above each delivery pile, and a reversal module 5c is mounted laterally at the free end of the outermost delivery module.
- Figure 1 shows three delivery modules, one above each pile, whereas figure 2 shows only one delivery module for the sake of simplicity.
- the module 5a comprises two side frames 10a, 10b, fitting with the frame 4 of the inking carriage 3.
- the delivery modules 5b and the reversal module 5c each comprise two side frames 11a, 11b, respectively 12a, 12b, fitting together.
- Between the side frames of each module is mounted at least one transverse row 13, 14, 15, of rod holders 17, the structure of which is illustrated in greater detail in figure 3.
- Similar rows of rod holders are distributed at regular intervals along the sheet transport path so as to provide adequate support for a plurality of longitudinal guidance rods 16, 26 distributed transversely to the direction of displacement of the sheets.
- eight guidance rods are mounted in such a way and held at regular intervals by the rows 13, 14, 15 of rod holders 17.
- the guidance rods 16 of the top module 5a and of the delivery module 5b are generally straight or locally slightly curved, whereas the guidance rods 26 of the reversal module 5c are shaped as curved elements.
- the guidance rods 16, 26 can be mostly continuous or be broken down into several guiding rod segments mounted one behind the other between the successive rows of rod holders.
- endless chains and gripper bars of the endless chain conveyor system are not illustrated in the drawings. It will however be understood that the endless chains are located between the side frames 10a, 10b, 11a, 11b, 12a, 12b and that the gripper bars move immediately below the guiding rods 16, 26 which are accordingly located immediately above the upper side of the transported sheets.
- the top module 5a and the delivery modules 5b are provided with transverse blowing pipes 24 for blowing air under pressure against the transported sheets.
- the reversal module 5c is provided with a curved blowing surface 25 with perforations for similarly blowing air under pressure against the transported sheets.
- These blowing means 24, 25 are disposed under the path of the gripper bars so as to blow air against the under side of the transported sheets.
- the perforations of the transverse perforated pipes 24 and of the curved blowing surface 25, are directed perpendicular to the transport path, in direction of the guidance rods 16, 26.
- the air blown by the blowing pipes 24 and the blowing surface 25 presses the sheets during transport against the guidance rods 16 and 26. It will be appreciated that the blown air not only maintains the sheets along the guidance rods but also contributes to improving the drying of the sheets.
- the sheets might be drawn against the guidance rods 16, 26 by means of air depression caused by suction means arranged on the same side of the sheets as the guidance rods 16, 26.
- suction means are well-known in the art and do not need to be described in detail. Blowing means and suction means could even be combined if necessary.
- each rod holder 17 comprises a holding portion 18 for holding a corresponding portion of a guidance rod 16, 26 or, alternatively, for holding end to end the two end portions of two successive guidance rod segments.
- the body 19 of each rod holder 17 is provided with a through hole, by means of which the rod holder 17 is mounted slidingly on a guiding crossbar 20, the latter being mounted transversely between the side frames.
- the rod holder 17 further includes an electric motor 21 and a gearbox 22, the latter engaging a threaded shaft member 23 mounted between the side frames, parallel to the guiding crossbar 20. Activation of the motor 21 causes a transverse translation of the corresponding rod holder 17 through the interaction of the gearbox 22 and the threaded shaft member 23.
- Other mechanisms for translating the rod holders 17 transversely to the direction of displacement of the sheets might be envisaged, such as driving the rod holders 17 on an transverse rack-rail member.
- each rod holder 17 be connected to a central control unit so as to be able to actuate simultaneously all the rod holders 17 which are coupled to a common line of guidance rods 16, 26 and ensure that the alignment with the sheet transporting direction is maintained. It might however be advantageous to be able to adjust the position of each rod holder 17 independently of the others, in order to provide fine adjustment the alignment of the guidance rods 16, 26.
- Control of the individual rod holders 17 can be implemented by a common central processing unit (CPU), not shown operatively coupled to the motors 22.
- This CPU can control the transverse positions of all rod holders 17, and can advantageously be provided with means for storing a predetermined set of position settings for usual sheet format or sizes and print layouts. The adequacy of these settings can be controlled visually at the beginning of each run.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Discharge By Other Means (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05022658A EP1777184A1 (fr) | 2005-10-18 | 2005-10-18 | Système de transport de feuilles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05022658A EP1777184A1 (fr) | 2005-10-18 | 2005-10-18 | Système de transport de feuilles |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1777184A1 true EP1777184A1 (fr) | 2007-04-25 |
Family
ID=35998513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05022658A Withdrawn EP1777184A1 (fr) | 2005-10-18 | 2005-10-18 | Système de transport de feuilles |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1777184A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2138437A1 (fr) | 2008-06-27 | 2009-12-30 | Kba-Giori S.A. | Système d'inspection pour contrôler la qualité de feuilles imprimées |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1006394A (en) * | 1962-08-29 | 1965-09-29 | Johannisberg Gmbh Maschf | Improvements relating to a method of and apparatus for turning and depositing printed sheets in printing machines |
DD125394A1 (fr) * | 1976-02-27 | 1977-04-20 | ||
US4225129A (en) * | 1978-01-25 | 1980-09-30 | Veb Polygraph Leipzig Kombinat Fuer Polygraphische Maschinen Und Ausruestungen | Sheet guidance arrangement in printing-machine outfeed units |
US4572073A (en) * | 1983-11-25 | 1986-02-25 | M.A.N.-Roland Druckmaschinen Aktiengesellschaft | Sheet guide arrangement in sheet-fed machines |
DE3533857A1 (de) * | 1984-10-05 | 1986-04-10 | VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig | Einrichtung an rollwagen von bogenleiteinrichtungen in druckmaschinen |
DE3736168A1 (de) * | 1987-02-27 | 1988-09-08 | Polygraph Leipzig | Stellantrieb fuer leiteinrichtungen |
US5228391A (en) * | 1990-12-31 | 1993-07-20 | Howard W. DeMoore | Vacuum transfer apparatus for rotary sheet-fed printing presses |
US5259309A (en) * | 1992-01-31 | 1993-11-09 | Koenig & Bauer Aktiengesellschaft | Adjustable sheet guide assembly |
EP1094023A2 (fr) * | 1999-10-20 | 2001-04-25 | Heidelberger Druckmaschinen Aktiengesellschaft | Dispositif de guidage de feuilles pour machines à travailler des feuilles imprimées |
EP1489031A2 (fr) * | 2003-06-19 | 2004-12-22 | Komori Corporation | Dispositif de guidage de feuilles |
DE102004031752A1 (de) * | 2003-07-24 | 2005-02-17 | Heidelberger Druckmaschinen Ag | Vorrichtung zur Förderung von Bogen in einer drucktechnischen Maschine |
-
2005
- 2005-10-18 EP EP05022658A patent/EP1777184A1/fr not_active Withdrawn
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1006394A (en) * | 1962-08-29 | 1965-09-29 | Johannisberg Gmbh Maschf | Improvements relating to a method of and apparatus for turning and depositing printed sheets in printing machines |
DD125394A1 (fr) * | 1976-02-27 | 1977-04-20 | ||
US4225129A (en) * | 1978-01-25 | 1980-09-30 | Veb Polygraph Leipzig Kombinat Fuer Polygraphische Maschinen Und Ausruestungen | Sheet guidance arrangement in printing-machine outfeed units |
US4572073A (en) * | 1983-11-25 | 1986-02-25 | M.A.N.-Roland Druckmaschinen Aktiengesellschaft | Sheet guide arrangement in sheet-fed machines |
DE3533857A1 (de) * | 1984-10-05 | 1986-04-10 | VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig | Einrichtung an rollwagen von bogenleiteinrichtungen in druckmaschinen |
DE3736168A1 (de) * | 1987-02-27 | 1988-09-08 | Polygraph Leipzig | Stellantrieb fuer leiteinrichtungen |
US5228391A (en) * | 1990-12-31 | 1993-07-20 | Howard W. DeMoore | Vacuum transfer apparatus for rotary sheet-fed printing presses |
US5259309A (en) * | 1992-01-31 | 1993-11-09 | Koenig & Bauer Aktiengesellschaft | Adjustable sheet guide assembly |
EP1094023A2 (fr) * | 1999-10-20 | 2001-04-25 | Heidelberger Druckmaschinen Aktiengesellschaft | Dispositif de guidage de feuilles pour machines à travailler des feuilles imprimées |
EP1489031A2 (fr) * | 2003-06-19 | 2004-12-22 | Komori Corporation | Dispositif de guidage de feuilles |
DE102004031752A1 (de) * | 2003-07-24 | 2005-02-17 | Heidelberger Druckmaschinen Ag | Vorrichtung zur Förderung von Bogen in einer drucktechnischen Maschine |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2138437A1 (fr) | 2008-06-27 | 2009-12-30 | Kba-Giori S.A. | Système d'inspection pour contrôler la qualité de feuilles imprimées |
EP2383213A1 (fr) | 2008-06-27 | 2011-11-02 | Kba-Notasys Sa | Système d'inspection pour contrôler la qualité de feuilles imprimées |
US9156245B2 (en) | 2008-06-27 | 2015-10-13 | Kba-Notasys Sa | Inspection system for inspecting the quality of printed sheets |
US9387667B2 (en) | 2008-06-27 | 2016-07-12 | Kba-Notasys Sa | Inspection system for inspecting the quality of printed sheets |
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18D | Application deemed to be withdrawn |
Effective date: 20071026 |