EP0467832A2 - Dispositif pour le transfert des feuilles seules au cylindre presseur d'une presse rotative à feuilles - Google Patents
Dispositif pour le transfert des feuilles seules au cylindre presseur d'une presse rotative à feuilles Download PDFInfo
- Publication number
- EP0467832A2 EP0467832A2 EP91810527A EP91810527A EP0467832A2 EP 0467832 A2 EP0467832 A2 EP 0467832A2 EP 91810527 A EP91810527 A EP 91810527A EP 91810527 A EP91810527 A EP 91810527A EP 0467832 A2 EP0467832 A2 EP 0467832A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- cylinder
- printing
- drum
- transfer
- 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
Images
Classifications
-
- 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
- B41F21/10—Combinations of transfer drums and grippers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F11/00—Rotary presses or machines having forme cylinders carrying a plurality of printing surfaces, or for performing letterpress, lithographic, or intaglio processes selectively or in combination
Definitions
- the invention relates to a device for transferring individual sheets to the impression cylinder of a sheet-fed rotary machine according to the preamble of patent claim 1.
- Such sheet transfer devices in rotary printing presses often consist of a stop drum and a transfer drum cooperating therewith, which transports the sheets onto the printing cylinder at regular intervals. These distances naturally correspond to the positions of the printing plates which are evenly fastened on the plate cylinder of the printing press.
- a device of the type described in the preamble of claim 1 is known. This device works with a suction conveyor roller which can be driven at a non-uniform speed such that a sheet conveyed by it is conveyed against the front stops of the printing cylinder at a somewhat excessive speed.
- the previously known sheet transfer devices have in common that they deliver the incoming sheets to the printing cylinder in exactly the same rhythm, the transfer point of the transfer cylinder at which the leading edge of the sheet is taken over by the grippers of the printing cylinder is always the same.
- care must be taken when attaching the printing plates to the plate cylinder that the printing plates are exactly uniform, i.e. with exact the same distance on the plate cylinder circumference. So that means that with a plate cylinder with two, with three or with four pressure plates, these must have an exact angular distance of 180 °, 120 ° or 90 °.
- the invention has for its object to provide a sheet transfer device which allows automatic adaptation of the sheet transfer such that the sheets always reach the printing plates printing them in an exactly aligned position, i.e. completely in register, so that the need for the printing plates itself is eliminated their opening on the plate cylinder at exactly the same angular intervals.
- the printing plates do not need to be adjusted in exact positions within a fraction of a millimeter when they are attached to the plate cylinder, but it is sufficient to adjust the adjusting device for the front stop of the transfer cylinder in accordance with the positions of the printing plates on the plate cylinder before printing begins adjust.
- This can either be done by hand on the basis of a few test prints or automatically by means of servomotors which are controlled by reading devices as a function of register marks printed on the sheets.
- stretching of the printing plates can be approximately compensated for by adjusting the adjusting device without having to readjust them.
- the transfer cylinder 2 of the device is arranged between a feed roller S and the printing cylinder D of a rotary printing press, in particular an intaglio printing press, the plate cylinder P of which only schematically indicated in FIG. 6 interacts with the printing cylinder D and at least two printing plates, generally N.
- the plate cylinder P has four printing plates which are mounted at an angular distance of approximately 90 °, that is, they do not necessarily have to be adjusted to a fraction of a millimeter exactly at a 90 ° distance on the plate cylinder.
- the sheets B are fed one by one onto the transfer cylinder 2 by the feed roller S, which in the example under consideration is a known suction roller driven at a non-uniform speed, an incoming sheet being conveyed against the front stop 8a of the transfer cylinder 2 and by the latter until it is handed over to the printing cylinder D.
- the front stop 8a is part of a curved grip 8 articulated on the transfer cylinder 2, which according to FIG the sheet B, which is schematically indicated, moves the sheet B and transfers it to the sheet gripper G2 of the printing cylinder D according to FIG.
- the directions of rotation of all cylinders are indicated by arrows in FIGS. 1 to 3.
- impression cylinder D and plate cylinder are of the same size, and since there are four printing plates, the impression cylinder D has four printing segments covered with rubber blankets and sheet grippers in front of each rubber blanket, of which the gripper G1 in FIG. 1 and the gripper G2 can be seen in FIG.
- the diameter of the transfer cylinder 2 is 1 / N of the diameter of the plate cylinder, in the example considered a quarter of this diameter, accordingly the transfer cylinder 2 executes and rotates N revolutions for one full rotation of the plate cylinder or the printing cylinder, i.e. four revolutions in the example considered one sheet B.
- FIGS. 3 to 5 The structure of the device according to the invention will now be described with reference to FIGS. 3 to 5 and the highly schematic FIGS. 6 and 7, on which the parts which correspond to the parts shown in FIGS. 3 to 5 are provided with the same reference numerals.
- the transfer cylinder 2 has a shaft 3 driven at a uniform speed which makes N revolutions when the plate cylinder P makes one full revolution; if the impression cylinder D has the same diameter as the plate cylinder, which is generally the case, then of course this corresponds to one revolution of the impression cylinder.
- the printing cylinder can also have a different diameter than the plate cylinder.
- the diameter of the printing cylinder D is only 1 / N of the diameter of the plate cylinder P, that is to say the printing cylinder D is only adapted to the size of a sheet and is exactly the same size as the transfer cylinder 2.
- the transfer cylinder 2 has a drum 4 which is adjustable in the circumferential direction relative to its shaft 3 and on which the sheet gripper 8 is articulated with its front stop 8a.
- a drum 4 which is adjustable in the circumferential direction relative to its shaft 3 and on which the sheet gripper 8 is articulated with its front stop 8a.
- several sheet grippers lying side by side in a row are provided both on the transfer cylinder 2 (FIG. 7) and on the printing cylinder D.
- the shaft 3 and the drum 4 are kinematically connected to one another by two levers 12 and 13.
- the one ends of both levers 12 and 13 are pivotally connected to one another at a common articulation point 14.
- a roller 15 is rotatably mounted.
- the other end of the lever 12 is articulated on a part 6 fastened to the shaft 3 by means of a pin 16 and the other end of the lever 13 is articulated on a part 5 fastened on the drum 4 by means of a pin 17. 3, this part 5 is indicated as a thickening of the drum 4.
- the axis of the shaft 3 and the mentioned levers 12 and 13 are surrounded by an annular actuator 10 which is outside of the Axis of the shaft 3 lying pin 11 is pivotally articulated on the device frame 1 and has a cylindrical inner circumference 10a, on which the roller 15 bears under the action of a spring 18 and can roll.
- This spring 18 is compressed between a shoulder 7 of part 6 and a spring plate 19 pivotably pivoted about the pin 19a on part 5 and therefore seeks to press shaft 3 and drum 4 in opposite directions, as a result of which the articulation point 14 with the roller 15 against the inner circumference 10a of the actuator 10 is pressed.
- the adjustment of the actuator 10 is supported by the spring 26.
- this actuator 10 can now be deflected somewhat in one direction or the other from the neutral position shown in FIG. 3, in which its inner circumference 10a is concentric with the axis of the shaft 3, in what way, how from the following description it follows that a corresponding displacement of the drum 4 relative to the shaft 3 in one or the other circumferential direction results.
- This control device has a cam disk 9 attached laterally to the shaft 3 in the form of an eccentric and a lever mechanism which, in the example under consideration, consists of two two-armed, angled levers 20 and 25.
- the mutually adjacent lever arms 20b and 25a of both levers are pivotally attached to one another at a common articulation point 24.
- the lever 20 is pivotally attached to the actuator 10 by means of a pin 21 which is diametrically opposite the pin 11.
- the other lever arm 20a of the lever 20 extends to the circumference of the cam disk 9 and carries at its end a cam roller 23 which can be rotated about the axis 22.
- the other lever 25 is articulated on the device frame 1 by means of a pin 27 fastened thereon.
- the end of its other lever arm 25b carries a wheel 28, in the example under consideration a gearwheel which is rotatable about the axis 30 and is driven in this way by means of a drive wheel 31 at a uniform speed is that it makes 1 / N revolutions with one complete revolution of the transfer drum, i.e. a quarter revolution in the example considered.
- the wheel 28 is driven by a gear 35 seated on the shaft 3, which meshes with a gear 34 of twice the size on the axis 33, and via a gear 32 seated on the axis 33, which meshes with the toothed drive wheel 31 combs and is half the size of this one.
- the wheel 28, which is as large as the drive wheel 31, is therefore driven with respect to the shaft 3 with a reduction ratio of 4: 1.
- N stop parts 28a to 28d are fastened on the axis 30 of the wheel 28, their angular distance from one another being 360 ° / N, that is to say 90 ° in the example considered.
- These stop parts interact with individually adjustable stationary stops 29a to 29d, which, at the level of the relevant stop parts 28a to 28d, are slidably mounted in the device frame 1 for the purpose of adjustment.
- FIG. 7 four different positions of these stops 29a to 29d are schematically illustrated and actuators Ma, Mb, Mc, Md coupled with these stops are also indicated, by means of which the stops can be set.
- the lever mechanism described from the levers 20 and 25 can thus be pivoted about the stationary pin 27 on the frame and is subject to a spring 26 which is supported on the frame 1 and acts on the lever mechanism in such a way that the cam roller 23 at the end of the lever 20 is pressed against the cam disc 9.
- the spring 26 acts on the articulation point 24 of the two levers 20 and 25.
- the cam roller 23 continuously rolls on the circumference of the cam disk 9 when the shaft 3 rotates under the action of the spring 26, as a result of which the levers 20 and 25 correspond to the shape of the eccentric cam disk 9 Carry out pivoting movement and consequently the actuator 10 articulated on the lever 20 swings back and forth from its neutral position in exactly the same way with each revolution of the cam disk.
- the levers 12 and 13 which are guided by the roller 15 along the inner circumference 10a, cause a small displacement of the drum 4 relative to the shaft 3 in or opposite to the direction of rotation thereof.
- the amplitude of the pivoting of the actuator 10, that is, the maximum deflection, is defined by the eccentricity of the cam disk 9. This eccentricity is dimensioned in such a way that the maximum permissible tolerances when fastening the printing plates to the plate cylinder can be compensated for by appropriately corrected sheet transfers to the printing cylinder.
- the shape of the cam disk 9 is selected such that approximately half a peripheral section 9a has a shape concentric to the axis of the shaft 3, while the other half peripheral section 9b has a continuously decreasing and then increasing radius, that is to say the actual eccentricity.
- the arrangement is such that the cam roller 23 is in the area of the maximum eccentricity, ie in the area E of the smallest radius of the cam disk 9, when the sheet gripper 8 passes the sheet transfer position.
- the maximum possible deflection which is defined by the eccentricity of the cam disc 9, is now limited with each rotation of the transfer drum 2 by the adjustable stops 29a to 29d mentioned in such a way that, when the sheet is transferred, that required to achieve a perfect register of the sheet with respect to the printing plate printing on it Correction takes place.
- This adjustment of the stops takes place either before the start of the printing operation due to a few test prints by hand or, as indicated in FIG. 7, servomotors Ma, Mb, Mc, Md are provided for this.
- these servomotors can be operated, for example, by pressing a button on a control panel, or the servomotors are controlled as a function of the register deviations which are measured automatically by reading register marks.
- the register marks applied during printing are used for this purpose, the reading of which corrects the positions of the subsequent sheets. If the incoming sheets already have a first print, for example a background, then register marks printed in the first printing unit can be used for automatic register correction.
- the cam roller 23 rests under the action of the spring 26 at the beginning of the concentric peripheral section 9a of the cam disk 9, and according to FIG. 4, while the sheet B is taken over by the transfer drum 2, the cam roller 23 is located in the end region of this peripheral section 9a .
- FIG. 5 at the moment the sheet is transferred to the impression cylinder, the position of the levers 20, 25 and so that the cam roller 23 is determined by one of the stops 29a to 29d, on which the relevant stop part 28a to 28d rests, so that the cam roller 23 remains in a more or less lifted position from the cam disk 9, which corresponds to the desired displacement of the drum 4 with respect to the Corresponds to wave 3.
- the cam roller 23 lies in front of the area E of the smallest radius of the cam disk 9.
- FIG. 5 shows three different positions S1, S2 and S3 of the adjustable parts, namely a middle position and two extreme positions, that is to say one position shifted to one side and a position shifted to the other side.
- the drum 4 In the position S1 shown in solid lines, which is determined by the stop 29a, the drum 4 assumes a central position relative to the shaft 3, which can correspond, for example, to the exactly adjusted position of the printing plate in question on the plate cylinder.
- the effective stop 29b is further away from the axis 30 of the wheel 28, so that the lever 25 is pivoted somewhat clockwise relative to the position S1. This causes the transfer point of transfer cylinder 2 to be shifted somewhat in the opposite direction to its direction of rotation.
- the device according to the invention is not limited to the exemplary embodiment described, but rather permits a variety of constructive embodiments.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Rotary Presses (AREA)
- Replacement Of Web Rolls (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Registering Or Overturning Sheets (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH2411/90 | 1990-07-20 | ||
CH241190 | 1990-07-20 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0467832A2 true EP0467832A2 (fr) | 1992-01-22 |
EP0467832A3 EP0467832A3 (en) | 1993-07-28 |
EP0467832B1 EP0467832B1 (fr) | 1996-08-28 |
Family
ID=4233175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91810527A Expired - Lifetime EP0467832B1 (fr) | 1990-07-20 | 1991-07-05 | Dispositif pour le transfert des feuilles seules au cylindre presseur d'une presse rotative à feuilles |
Country Status (11)
Country | Link |
---|---|
US (1) | US5125336A (fr) |
EP (1) | EP0467832B1 (fr) |
JP (1) | JP2951440B2 (fr) |
KR (1) | KR0163789B1 (fr) |
CN (1) | CN1028979C (fr) |
AT (1) | ATE141890T1 (fr) |
AU (1) | AU637750B2 (fr) |
CA (1) | CA2047473C (fr) |
DE (1) | DE59108115D1 (fr) |
RU (1) | RU1838154C (fr) |
UA (1) | UA19835A (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0668161B1 (fr) * | 1994-02-17 | 1998-06-10 | De La Rue Giori S.A. | Dispositif pour le transfert de feuilles individuelles sur le cylindre imprimeur d'une machine d'impression rotative de feuilles |
EP2749416A3 (fr) * | 2012-12-28 | 2018-01-03 | Komori Corporation | Presse d'impression en creux |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4330392A1 (de) * | 1993-09-08 | 1995-03-16 | Heidelberger Druckmasch Ag | Schwingender Vorgreifer einer Bogendruckmaschine |
US5421257A (en) * | 1993-12-02 | 1995-06-06 | Okuda; Masaharu | Sheet transferring machine for printing machine |
DE19901699B4 (de) * | 1998-02-04 | 2007-11-15 | Heidelberger Druckmaschinen Ag | Verfahren und eine Vorrichtung zur Durchführung des Verfahrens zur Beseitigung von rhythmischen Passerfehlern in Rotationsdruckmaschinen |
AU5288500A (en) * | 1999-05-24 | 2000-12-12 | C.G. Bretting Manufacturing Company, Inc. | Web retention apparatus and method for cutoff blade |
EP1361028A1 (fr) * | 2002-05-06 | 2003-11-12 | Kba-Giori S.A. | Dispositif de découpe destiné à découper des fenêtres dans un substrat |
EP1442878A1 (fr) * | 2003-02-03 | 2004-08-04 | Kba-Giori S.A. | Entraínement du dispositif d'encrage dans une machine d'impression en creux |
DE102019108763A1 (de) * | 2019-04-03 | 2020-10-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zum Aufbringen einer Struktur aus Druckmedium auf ein Substrat |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT319982B (de) * | 1972-05-02 | 1975-01-27 | Heidelberger Druckmasch Ag | Antriebsvorrichtung für den Bogenzuführzulinder bei Druckmaschinen |
DE2435203C2 (de) * | 1974-07-22 | 1981-10-01 | Van Vlaanderen Machine Co., Paterson, N.J. | Bogen-Rotationsdruckmaschine |
DE3836544A1 (de) * | 1988-10-27 | 1990-05-03 | Rotaprint Gmbh | Gegendruckzylinder mit greifersystem |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1591127A (en) * | 1922-04-04 | 1926-07-06 | Harris Automatic Press Co | Printing press |
US1514049A (en) * | 1922-12-27 | 1924-11-04 | Ichida Koshiro | Rotary multicolor printing press |
FR576960A (fr) * | 1923-02-14 | 1924-08-29 | Machine pour l'impression en offset en deux couleurs | |
US2427904A (en) * | 1939-05-05 | 1947-09-23 | Davidson Mfg Corp | Printing press |
US3002450A (en) * | 1959-10-03 | 1961-10-03 | Nebiolo Societa Per Azioni | Rotary offset multi-color printing machines |
US3785287A (en) * | 1968-06-17 | 1974-01-15 | H Dahlgren | Sheet interrupter |
US3865362A (en) * | 1973-02-23 | 1975-02-11 | Miller Printing Machinery Co | Sheet transfer cylinder |
JPS53135710A (en) * | 1977-04-30 | 1978-11-27 | Raes Karl | Printing cylinder unit |
DE3112964A1 (de) * | 1981-04-01 | 1982-10-21 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | "bogenuebertragungszylinder von bogenrotationsdruckmaschinen mit einer einrichtung zur passerkorrektur der aufdrucke" |
DE3428668A1 (de) * | 1984-08-03 | 1986-02-13 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | Umfuehrtrommel fuer bogendruckmaschinen, insbesondere kartonmaschinen |
DE3445886A1 (de) * | 1984-12-15 | 1986-06-26 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Greifervorrichtung fuer eine druckmaschine |
JPS61148058A (ja) * | 1984-12-24 | 1986-07-05 | Shinohara Tekkosho:Kk | 枚葉印刷機の用紙展伸調整装置 |
JPH082630B2 (ja) * | 1985-03-26 | 1996-01-17 | リョービ株式会社 | オフセット印刷機 |
-
1991
- 1991-06-24 US US07/719,821 patent/US5125336A/en not_active Expired - Lifetime
- 1991-07-01 AU AU79461/91A patent/AU637750B2/en not_active Ceased
- 1991-07-05 AT AT91810527T patent/ATE141890T1/de not_active IP Right Cessation
- 1991-07-05 EP EP91810527A patent/EP0467832B1/fr not_active Expired - Lifetime
- 1991-07-05 DE DE59108115T patent/DE59108115D1/de not_active Expired - Fee Related
- 1991-07-18 JP JP3177940A patent/JP2951440B2/ja not_active Expired - Fee Related
- 1991-07-19 CN CN91104895A patent/CN1028979C/zh not_active Expired - Fee Related
- 1991-07-19 CA CA002047473A patent/CA2047473C/fr not_active Expired - Fee Related
- 1991-07-19 RU SU915001163A patent/RU1838154C/ru active
- 1991-07-19 UA UA5001163A patent/UA19835A/uk unknown
- 1991-07-20 KR KR1019910012532A patent/KR0163789B1/ko not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT319982B (de) * | 1972-05-02 | 1975-01-27 | Heidelberger Druckmasch Ag | Antriebsvorrichtung für den Bogenzuführzulinder bei Druckmaschinen |
DE2435203C2 (de) * | 1974-07-22 | 1981-10-01 | Van Vlaanderen Machine Co., Paterson, N.J. | Bogen-Rotationsdruckmaschine |
DE3836544A1 (de) * | 1988-10-27 | 1990-05-03 | Rotaprint Gmbh | Gegendruckzylinder mit greifersystem |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0668161B1 (fr) * | 1994-02-17 | 1998-06-10 | De La Rue Giori S.A. | Dispositif pour le transfert de feuilles individuelles sur le cylindre imprimeur d'une machine d'impression rotative de feuilles |
EP2749416A3 (fr) * | 2012-12-28 | 2018-01-03 | Komori Corporation | Presse d'impression en creux |
Also Published As
Publication number | Publication date |
---|---|
US5125336A (en) | 1992-06-30 |
JP2951440B2 (ja) | 1999-09-20 |
UA19835A (uk) | 1997-12-25 |
KR920002335A (ko) | 1992-02-28 |
CN1060063A (zh) | 1992-04-08 |
RU1838154C (ru) | 1993-08-30 |
AU7946191A (en) | 1992-01-23 |
AU637750B2 (en) | 1993-06-03 |
CA2047473C (fr) | 2000-11-14 |
CA2047473A1 (fr) | 1992-01-21 |
CN1028979C (zh) | 1995-06-21 |
JPH04226759A (ja) | 1992-08-17 |
DE59108115D1 (de) | 1996-10-02 |
EP0467832B1 (fr) | 1996-08-28 |
KR0163789B1 (ko) | 1999-03-30 |
ATE141890T1 (de) | 1996-09-15 |
EP0467832A3 (en) | 1993-07-28 |
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