EP1397255A1 - Qualitätskontrollvorrichtung - Google Patents
QualitätskontrollvorrichtungInfo
- Publication number
- EP1397255A1 EP1397255A1 EP02737860A EP02737860A EP1397255A1 EP 1397255 A1 EP1397255 A1 EP 1397255A1 EP 02737860 A EP02737860 A EP 02737860A EP 02737860 A EP02737860 A EP 02737860A EP 1397255 A1 EP1397255 A1 EP 1397255A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- belt
- gripper
- speed
- quality control
- 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
- 238000003908 quality control method Methods 0.000 title claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000002699 waste material Substances 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F21/00—Devices for conveying sheets through printing apparatus or machines
- B41F21/08—Combinations of endless conveyors and grippers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F33/00—Indicating, counting, warning, control or safety devices
- B41F33/0036—Devices for scanning or checking the printed matter for quality control
-
- 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
- B65H29/042—Intermediate conveyors, e.g. transferring devices
- B65H29/044—Intermediate conveyors, e.g. transferring devices conveying through a machine
-
- 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
- B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
- B65H29/241—Suction devices
- B65H29/242—Suction bands or belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/30—Orientation, displacement, position of the handled material
- B65H2301/31—Features of transport path
- B65H2301/311—Features of transport path for transport path in plane of handled material, e.g. geometry
- B65H2301/3113—Features of transport path for transport path in plane of handled material, e.g. geometry vertical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/54—Auxiliary process performed during handling process for managing processing of handled material
- B65H2301/542—Quality control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2553/00—Sensing or detecting means
- B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
- B65H2553/42—Cameras
-
- 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
- the invention relates to a quality control device according to the preamble of claims 1 or 2.
- Quality control devices of this type are used on printing machines in order to take pictures of the printed sheets and, by comparing these sheets with a desired print image, to detect deviations from a desired print quality and, if necessary, to be able to intervene correctively in the printing process.
- the known device has a suction box with a suction surface over which the printed sheets are drawn with the aid of sheet grippers.
- the friction of the sheets on the suction surface of the suction box ensures that the sheets are always taut and lie in a well-defined plane, so that a true image of the sheet can be recorded with the help of a camera facing the suction surface.
- a device for quality control that takes this problem into account is described in DE 4436 583 A1.
- This device comprises a drum to which negative pressure is applied and a line camera facing the drum jacket.
- a gripper pulls the sheets to be checked through the space between the line scan camera and the drum, where the sheets are drawn by the vacuum on the drum rest.
- the path of the sheets through the quality control device is approximately straight.
- the suction effect of the drum causes the sheets to be checked to adhere to a segment of a segment of a circle on the surface of the drum, the extent of this section not being precisely controllable. It depends on the stiffness of the sheets to be checked and on the suction force exerted by the drum and does not remain constant as a sheet moves over the drum.
- a suction conveyor for use in a sheet-fed printing machine which comprises a suction box with a rotating driven belt.
- This suction box is used to convey the sheets towards the beginning or end of processing in the printing machine, at places where sheet grippers which guide the sheets between different stations in the printing process have either not yet grasped them or have already released them.
- the suction conveyor serves as the sole conveying means for the sheets
- the suction belt used exclusively stabilizes — but does not promote — the sheets conveyed by a separate chain gripper system for the purpose of quality control.
- DE 4239 561 A1 discloses a sheet transport device in which the beginning of the sheet is transported by means of a chain gripper and the printed underside of the sheet rests on a moving suction belt at the same time. None can be seen about the type of drive and the speed of the suction belt.
- the invention has for its object to provide a quality control device.
- the suction box is required in order to be able to guide a quality control sheet through the field of view of the surveillance camera without any time-varying curvature.
- the smearing of paint due to friction between the surface of the suction box and the back of the sheet is avoided by instead of the surface of the suction box coming into contact with a band which is movable with the sheet.
- a surface camera is preferably used as the camera, so that a complete image can be recorded at a given point in time and local synchronization problems in the transport of the sheet cannot lead to recording errors.
- the belt is driven via the same chain on which the sheet gripper is also guided. This means that the belt and sheet gripper can be synchronized without complex control.
- a first possibility of coupling the belt to the chain is to use a chain wheel which meshes with the chain and is connected in a rotationally fixed manner to a roller guiding the belt via a chain or toothed belt drive.
- the speed of the belt corresponds exactly to that of the chain.
- a sheet drawn by a gripper thus remains at rest with the belt during its transport over the suction surface of the suction box, so that lubrication is impossible.
- the pitch circle of the chain wheel or the drive ratio can also be slightly larger, so that the speed of the belt is slightly less than that of the gripper. This ensures that the sheet is always pulled taut and flat on the belt when the camera takes a picture.
- the difference in sheet and belt speeds can be of the order of a few percent; the relative displacement of the sheet and tape against each other during the movement of the sheet over the suction box is in any case much smaller than the movement of the sheet relative to the suction box, so that the risk of lubrication is significantly reduced even at different speeds.
- the belt is driven by its own drive motor.
- This can also be regulated in such a way that the web speed of the gripper corresponds to that of the belt or is at most slightly greater.
- Particularly advantageous here is the possibility of regulating the web speed in accordance with the tensile force exerted on the sheet by the gripper, in such a way that a tensile force is present, i.e. the sheet is tensioned, but on the other hand a limit value of the tensile force that causes the sheet to slide could lead over the belt, is not exceeded.
- Fig. 2 to 4 embodiments of the suction box and the tape of the quality control device.
- Fig. 1 shows a schematic section of a sheet-fed rotary printing press with a quality control device.
- a sheet feeder of the machine is not shown; the structure of the printing unit with inking units 01 and plate cylinders 02, which are arranged in groups on a collecting cylinder 03, is known per se and need not be described in more detail here.
- Finished sheets printed on both sides are taken over by a conveyor line 04, which a plurality of chain gripper system 22 guided on an endless chain, z. B. grippers 22.
- a quality control device 06 which comprises a suction box 07, which is connected to a vacuum source (not shown), and a CCD camera 08, the field of view of which is aligned with the suction surface of the suction box 07.
- the CCD camera 08 is connected to an electronic evaluation device (not shown), which compares the images obtained by the CCD camera 08 with a predetermined print image to be achieved and decides for each recorded sheet whether it corresponds to the print image to be achieved or not ,
- a sheet delivery 09 is arranged on the conveyor line 04, the two stacks 12, z. B. two delivery stacks 12 for usable sheets and a stack 11 for waste, e.g. B. has a waste stack 11.
- a sheet is deposited either on one of the delivery stacks 12 for usable sheets or on the waste stack 11.
- FIG. 2 shows a first embodiment of the suction box 07 of the quality control device 06 and the parts surrounding it.
- two guide rollers 14; 16 rotatably mounted on a frame (not shown) which is fixedly connected to the guide rails (not shown) of a conveyor chain 17 of the conveyor line 04.
- a flexible endless belt 18 is around the guide rollers 14; 16 and is looped by the guide rollers 14; 16 kept under tension. It extends over a suction surface 19 of the suction box 07, which is covered by an arc 21 in FIG. 2, and the rear side thereof.
- the extent of the suction surface 19 corresponds to the largest sheet format to be printed with the sheet-fed rotary printing press.
- a plurality of suction lines connected to the side of the suction box 07 are connected to a suction air fan (not shown) which serves as a vacuum source.
- the band 18 consists of a well air-permeable, loose fabric or any flexible material with punched or cut openings.
- Grippers 22 are arranged on the conveyor chain 17 at a distance which is slightly larger than the largest sheet format to be printed.
- Fig. 2 shows a with the guide roller 16 by means of a drive 27, for. B. a chain or toothed belt drive 27 rotatably connected sprocket 23 which engages with the conveyor chain 17 and thus implements a translation of the conveyor chain 17 in a rotation of the guide roller 16.
- a corresponding sprocket for engagement with a second conveyor chain of the conveyor section 04 is provided on the end face of the guide roller 16 of FIG. 2 facing the viewer; however, this sprocket, like the associated chain, has been omitted for reasons of clarity.
- the pitch circle diameter of the chain wheel 23, the transmission ratio of the drive 27, the thickness of the belt 18 and the outer diameter of the guide roller 16 are dimensioned such that the surface of the belt 18 moves at exactly the same speed as a belt conveyor 22 conveyed by the gripper 22 Sheet 21. If a sheet 21 to be checked is the quality control device 06 happens, the sheet 21 is pressed against the surface of the belt 18 by an air flow directed at the suction surface 19. As a result of the vertical installation position of the suction box 07, the sheet 21 hangs down smoothly under its own weight at this time and therefore lies smoothly and wrinkle-free on the surface of the belt 18.
- the CCD camera 08 arranged facing the suction surface 19 generates an image of the sheet 21.
- a flash is expediently used for the image recording; whereby it is not necessary to slow down the movement of the sheet 21 for imaging.
- an image evaluation device (not shown) is used to check whether the sheet 21 is faultless or defective, so that it relates to the sheet 21 for this preselected stack 12 or 11 of the sheet boom 09 can be stored.
- sheets 21 are to be processed from a very soft material that tends to fold, it may be expedient if the belt 18 moves at a somewhat lower speed than the conveyor chain 17 or the gripper 22. In this way, a sheet 21 can also then be smoothed to a certain extent if it already lies partially or completely on the belt 18.
- Such a speed ratio can be achieved in a simple manner if the pitch circle diameter of the chain wheel 23 is increased accordingly.
- a corresponding result can of course also be achieved if the overall transmission ratio of exactly 1 is replaced by a transmission ratio change of the drive 27, a change in the thickness of the belt 18 or a change in the diameter of the guide roller 16 to a total transmission ratio close to 1.
- Fig. 3 shows a modification of the embodiment of Fig. 2, in which a direct coupling of the guide rollers 14; 16 is dispensed with the conveyor chain 17. Both Guide rollers 14; 16 rotate freely; a drive of the belt 18 is achieved with the aid of drivers 24, which are each arranged in pairs on the lateral edges of the belt 18 and which protrude into the path of the grippers 22, so that they are gripped and pushed by a front edge of a gripper 22.
- the guide roller 16 has its own motor 26 which drives the rotation of the guide roller 16 at a controlled speed.
- This type of drive allows an increased degree of flexibility, because depending on the type of control of the motor 26, the belt 18 can be operated exactly at the speed of the grippers 22 or at a slightly lower speed, which allows the sheet 21 to be tightened as described above. operate.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10128833 | 2001-06-15 | ||
DE10128833A DE10128833B4 (de) | 2001-06-15 | 2001-06-15 | Qualitätskontrollvorrichtung |
PCT/DE2002/002042 WO2002102595A1 (de) | 2001-06-15 | 2002-06-06 | Qualitätskontrollvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1397255A1 true EP1397255A1 (de) | 2004-03-17 |
EP1397255B1 EP1397255B1 (de) | 2009-09-30 |
Family
ID=7688243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02737860A Expired - Lifetime EP1397255B1 (de) | 2001-06-15 | 2002-06-06 | Qualitätskontrollvorrichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US6877427B2 (de) |
EP (1) | EP1397255B1 (de) |
JP (1) | JP3999197B2 (de) |
AT (1) | ATE444168T1 (de) |
DE (2) | DE10128833B4 (de) |
WO (1) | WO2002102595A1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10222543B4 (de) * | 2002-05-17 | 2007-08-02 | Man Roland Druckmaschinen Ag | Auslegevorrichtung an einer Bogenverarbeitungsmaschine |
DE102005050040B4 (de) * | 2004-11-15 | 2017-08-24 | Heidelberger Druckmaschinen Ag | Einrichtung zum Steuern einer drucktechnischen Maschine |
EP1790473A1 (de) | 2005-11-25 | 2007-05-30 | Kba-Giori S.A. | Verfahren zur Erfassung vom Eintreten von Druckfehlern auf Druckbogen während deren Bearbeitung in einer Druckmaschine |
RU2436679C2 (ru) * | 2005-11-25 | 2011-12-20 | КБА-НотаСис СА | Способ обнаружения дефектов печати на печатной основе в процессе ее обработки в печатной машине |
US7878615B2 (en) * | 2005-12-14 | 2011-02-01 | Pitney Bowes Inc. | System and method for detecting defective ink jet nozzles |
EP1834779A1 (de) * | 2006-03-14 | 2007-09-19 | Kba-Giori S.A. | Inspektionsvorrichtung für eine beidseitige Bogendruckmaschine |
JP5233027B2 (ja) * | 2006-07-31 | 2013-07-10 | オセ−テクノロジーズ・ベー・ヴエー | 像対シートの位置決めのための検出装置および方法 |
EP2138437A1 (de) | 2008-06-27 | 2009-12-30 | Kba-Giori S.A. | Inspektionssystem zur Inspektion der Qualität von Druckbögen |
DE102008046125A1 (de) * | 2008-09-05 | 2010-03-11 | Heidelberger Druckmaschinen Ag | Bogenverarbeitungsmaschine und Verfahren zum Ablegen von Bogen |
JP5379525B2 (ja) * | 2009-03-19 | 2013-12-25 | 株式会社小森コーポレーション | シート状物の品質検査装置 |
CN101850652B (zh) * | 2009-03-19 | 2015-03-11 | 小森公司 | 薄片形件质量检查装置 |
EP2492094A1 (de) * | 2011-02-25 | 2012-08-29 | Bobst Bielefeld GmbH | Farbprobevorrichtung und Verfahren. |
WO2013026792A1 (de) * | 2011-08-22 | 2013-02-28 | Windmöller & Hölscher Kg | Maschine und verfahren zum bedrucken von materialbahnen |
US20140208970A1 (en) * | 2011-08-22 | 2014-07-31 | Windmoeller & Hoelscher Kg | Machine and method for printing material webs |
CN102992087B (zh) * | 2012-11-20 | 2015-06-24 | 北京华夏视科图像技术有限公司 | 印刷品展平装置和具有它的印刷品图像检测设备 |
CN105437764A (zh) * | 2015-12-23 | 2016-03-30 | 无锡群欢包装材料有限公司 | 一种印刷机用检测平台 |
TWI780451B (zh) * | 2020-07-03 | 2022-10-11 | 住華科技股份有限公司 | 自動化取放片設備以及光學膜的取放方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1625642A (en) | 1924-04-08 | 1927-04-19 | Michael A Droitcour | Method and mechanis for delivering and stacking sheets |
US3689150A (en) * | 1970-08-31 | 1972-09-05 | Robertson Photo Mechanix Inc | Automatic roll film camera |
GB2055086B (en) * | 1979-07-19 | 1983-04-07 | Ricoh Kk | Collating appparatus for copying machine |
JPH0725465B2 (ja) * | 1988-07-11 | 1995-03-22 | 三田工業株式会社 | ソーター |
WO1993015010A1 (en) * | 1992-01-24 | 1993-08-05 | Kabushiki Kaisha Ace Denken | Device for conveying and stacking paper sheets |
DE9116439U1 (de) | 1991-08-14 | 1992-11-12 | Koenig & Bauer Ag, 8700 Wuerzburg, De | |
DE4239561C2 (de) | 1992-11-25 | 2000-10-19 | Heidelberger Druckmasch Ag | Kettenförderer einer Bogendruckmaschine |
DE4436583A1 (de) * | 1994-10-13 | 1996-04-18 | Heidelberger Druckmasch Ag | Vorrichtung zur Qualitätskontrolle von bedrucktem Papier in einer Rotationsdruckmaschine |
EP0798251A3 (de) * | 1996-03-28 | 1998-01-07 | Heidelberger Druckmaschinen Aktiengesellschaft | Saugförderer |
JPH09301592A (ja) * | 1996-05-13 | 1997-11-25 | Riso Kagaku Corp | 画像形成システム |
DE19624196C2 (de) * | 1996-06-18 | 1999-09-23 | Koenig & Bauer Ag | Vorrichtung und Verfahren Bogenführung bei einer qualitativen Beurteilung von bearbeiteten Bogen |
EP0918720B1 (de) * | 1996-07-19 | 2002-08-14 | Ferag AG | Vorrichtung zum zubringen von druckereierzeugnissen zu verarbeitungsstationen |
DE19653248A1 (de) * | 1996-10-21 | 1998-04-30 | Koenig & Bauer Albert Ag | Bogenbearbeitungsmaschine |
ATE294066T1 (de) * | 2000-01-25 | 2005-05-15 | Koenig & Bauer Ag | Bogendruckmaschine mit siebdruckzylindern |
EP1364899B1 (de) * | 2002-05-22 | 2008-08-27 | Ferag AG | Verfahren zum Fördern von flächigen, flexiblen Produkten und Vorrichtung zur Durchführung des Verfahrens |
-
2001
- 2001-06-15 DE DE10128833A patent/DE10128833B4/de not_active Expired - Fee Related
-
2002
- 2002-06-06 US US10/479,981 patent/US6877427B2/en not_active Expired - Fee Related
- 2002-06-06 EP EP02737860A patent/EP1397255B1/de not_active Expired - Lifetime
- 2002-06-06 JP JP2003505160A patent/JP3999197B2/ja not_active Expired - Fee Related
- 2002-06-06 AT AT02737860T patent/ATE444168T1/de not_active IP Right Cessation
- 2002-06-06 WO PCT/DE2002/002042 patent/WO2002102595A1/de active Application Filing
- 2002-06-06 DE DE50213887T patent/DE50213887D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO02102595A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE444168T1 (de) | 2009-10-15 |
DE10128833B4 (de) | 2006-11-02 |
JP3999197B2 (ja) | 2007-10-31 |
DE50213887D1 (de) | 2009-11-12 |
US6877427B2 (en) | 2005-04-12 |
WO2002102595A1 (de) | 2002-12-27 |
DE10128833A1 (de) | 2003-01-02 |
JP2004530579A (ja) | 2004-10-07 |
EP1397255B1 (de) | 2009-09-30 |
WO2002102595A8 (de) | 2004-07-22 |
WO2002102595B1 (de) | 2003-02-13 |
US20040173113A1 (en) | 2004-09-09 |
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