EP0275882B1 - Dispositif de transport pour une machine d'impression rotative à feuilles - Google Patents
Dispositif de transport pour une machine d'impression rotative à feuilles Download PDFInfo
- Publication number
- EP0275882B1 EP0275882B1 EP88100155A EP88100155A EP0275882B1 EP 0275882 B1 EP0275882 B1 EP 0275882B1 EP 88100155 A EP88100155 A EP 88100155A EP 88100155 A EP88100155 A EP 88100155A EP 0275882 B1 EP0275882 B1 EP 0275882B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- displacer
- gripper
- drum
- conveying device
- 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.)
- Expired - Lifetime
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
- B41F21/08—Combinations of endless conveyors and grippers
-
- 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
Definitions
- the invention relates to a conveyor device for a sheet-fed rotary printing machine according to the preamble of the first claim.
- a conveyor device with these features has become known from DE-PS 2 111 049.
- the gripper supports of the gripper systems usually protrude beyond the pitch circle diameter of the deflection chain wheels.
- they run on a radius which is approximately equal to the radius of the gripper pads of the grippers of the printing press cylinder. If the transport chains run off the deflection sprockets and continue in a straight line, the speed of the gripper pads reduces to the speed of the transport chains.
- the rear end of the sheet has not yet left the printing press cylinder in the case of larger formats and is accordingly moved forward faster than the sheet beginning is pulled off.
- the bow loses its tension and can form waves that lead to an increased risk of lubrication.
- the sheet is carried along on the rubber cylinder until it is torn off. This can lead to permanent deformation of the arch.
- the disadvantage here is that the sheet displacer lubricates the sheet and in particular does not act immediately after the sheet has been transferred to the gripper systems.
- the front edge of the take-off drum or the support disks will smear due to the kinking of the tangent.
- the beginning of the bow gives way especially in the case of a large drum channel, to a certain extent in the non-load-bearing area of the take-up drum, before it can be displaced by the arc displacer that can be controlled radially between two support disks of the take-up drum.
- This means that the known tension of the sheet on the rubber blanket of the blanket cylinder preventing tension can not be generated from the beginning of the handover by a sheet displacer that can be controlled centrally on the take-up drum between two support disks.
- blowing air device In chain transfer systems, it is also important to support the sheet after the transport chains have left the chain radius of the take-up drum in order to ensure flutter-free sheet travel into the next printing unit or for sheet delivery. Another disadvantage is that the blowing air device requires a high level of ventilation and control effort.
- the invention is therefore based on the object in a conveyor device of the type mentioned by a mechanical sheet displacer the printed sheet with reduced risk of smearing immediately after transfer from the pressure cylinder to the gripper systems from the beginning of the sheet with sufficient tension until the loosening of the gripper closure of the rotating transport chains to guide arranged gripper systems, d. i.e. until the next transfer or delivery of the sheet with the chain transfer system.
- the sheet is removed in a known manner from a printing cylinder 1 by means of gripper systems 4, 19 provided on rotating transport chains, not shown, and is guided around a removal drum 2.
- the gripper systems 4, 19 have gripper supports 4 and 19, which are connected to the transport chains in a gripper carriage 15 on a gripper support spindle 10 and a gripper shaft 11 (FIG. 3).
- the take-off drum 2 carries two deflection sprockets, not shown, over which the transport chains run.
- each printing unit has, in a known manner, rubber and plate cylinders.
- this is done in that the tension in the sheet is maintained from the start of the transfer of the sheet 5 from the impression cylinder 1 to the gripper systems 4, 19.
- the space covered by the printed sheet 5 between the gripper systems 4, 19 arranged on the circulating transport chains and an opposite supporting surface of the take-up drum 2 becomes fixed or radial immediately after the sheet 5 is transferred to the gripper systems 4, 19 by one on the gripper systems 4, 19 bridged adjustable or out of the chain radius arch displacer 3 bridged, the curved support surface has approximately the radius of the supporting surfaces of the drum shell of the take-up drum 2.
- the arc displacer 3 can be full-surface or recessed and axially adjustable.
- the radial adjustment option allows to compensate for a small path error during the running of the sheet 5, which results from the radial difference between the gripper pad 4 and the diameter of the supporting surfaces of the take-off drum 2, if the gripper pad 4 is processed over the radius of the thin sheet 5 bearing surfaces of the drum shell of the take-off drum 2 is also set.
- control rollers 7 are arranged on both sides of the shaft of the take-up drum, which run on curves 12 under spring force 8.
- the control rollers 7 are attached to both ends of a cross member 17, which the bow displacer 3rd or carries a controllable sheet displacement comb 6 at one end.
- the bow displacement comb 6 or the bow displacer 3 is pivotally connected at the other end to the gripper systems 4, 19 in order to pivot them out of the chain radius of the deflection sprockets or after the bow end has left the pressure zone.
- the curved support surfaces of the sheet displacer 3 either as a controllable sheet displacement comb 6 or as a radially adjustable sheet displacement comb 16 and the cooperating bearing surfaces of the drum shell of the take-up drum 2 interlocking as a sheet carrier comb 13.
- the comb arrangement prevents the surfaces of the sheet displacer 3 fastened to the rotating gripper systems 4, 19 and the surfaces fastened to the rotating take-up drum 2 when the gripper systems 4, 19 enter the area of the take-up drum 2 or collide when leaving the take-up drum 2 due to the relative speeds present.
- elements 18, for. B. rolls are provided in the curved support surface of the sheet displacer 3 or the sheet displacement comb 6, 16 and / or the load-bearing surfaces of the drum shell of the take-up drum 2 or the sheet support comb 13, elements 18, for. B. rolls are provided.
- all known comparable elements can be used to prevent lubrication, such as. B. sheet guide rings, special surface coatings, knobs, covering with Super Blue, glass beads or other lifts. The additional use of blown air or the like would also be conceivable, but is not absolutely necessary.
- the beginning of the arc of the arch 5 lies more snugly against the curved support surface of the arch displacer 3 or the arch displacer combs 6, 16, so that a lubrication-free and flutter-free arch guide until the release of the gripper in the following printing unit or the sheet delivery is guaranteed.
- the advantages of the solution according to the invention are that in a very simple and inexpensive embodiment after the sheet 5 has been transferred to the gripper systems 4, 19 of the transport chains, a uniform pull can always be maintained by displacement of the sheet from the beginning of the sheet, as a result of which no lubrication of the front drum edge occurs fear.
- This pull can also be maintained by steering the bend displacer out of the chain radius if the beginning of the bend already runs slowly on a straight path from the deflection sprockets and the end of the bend is still in the Pressure zone moves faster.
Claims (7)
- Dispositif de transport pour une machine imprimante rotative à feuilles, dans lequel les feuilles imprimées (5) sont retirées d'un cylindre d'impression (1) au moyen de systèmes de preneurs (4,19) prévus sur des chaînes de transport rotatives, et guidées autour d'un tambour de prélèvement (2), dont les surfaces porteuses couvrent une partie de l'enveloppe du tambour ayant un bord avant (14), tandis que, dans une autre partie de l'enveloppe du tambour, un déplaceur de feuilles (3) agit et porte les deux roues de chaîne de renvoi, sur lesquelles se meuvent les chaînes de transport,
caractérisé en ce que les déplaceurs de feuilles (3), équipés d'éléments (18) pour empêcher la maculature des feuilles, sont agencés sur les systèmes de preneurs (4,19) prévus sur les chaînes de transport rotatives, de sorte que l'espace recouvert par la feuille imprimée entre les systèmes de preneurs (4,19) et le bord avant (14) du tambour de prélèvement (2) est ponté directement avec le transfert de la feuille (5) du cylindre d'impression (1) aux systèmes de preneurs (4,19) en commençant au début de la feuille. - Dispositif de transport selon la revendication 1,
caractérisé en ce que la surface d'appui cintrée du déplaceur de feuilles (3) est continue ou évidée de façon quelconque. - Dispositif de transport selon les revendications 1 et 2,
caractérisé en ce que le déplaceur de feuilles (3) est agencé de façon fixe ou réglable sur les systèmes de preneurs (4,19). - Dispositif de transport selon les revendications 1 à 3,
caractérisé en ce que le déplaceur de feuilles (3) est agencé sur les systèmes de preneurs (4,19) de façon réglable axialement et/ou radialement. - Dispositif de transport selon les revendications 1 à 4,
caractérisé on ce que le déplaceur de feuilles (3) est commandable en dehors du rayon des roues de chaîne de renvoi. - Dispositif de transport selon les revendications 1 à 5,
caractérisé en ce que la surface d'appui cintrée du déplaceur de feuilles (3) et une surface porteuse du tambour de prélèvement (2) sont réalisées sous forme de poignes (6,16 et 13) s'engageant l'un dans l'autre. - Dispositif de transport selon les revendications 1 à 6,
caractérisé en ce que la surface d'appui cintrée du déplaceur de feuilles (3,6,16) et/ou les surfaces porteuses de l'enveloppe du tambour de prélèvement (2) présentent des éléments (18) pour empêcher la maculature, par exemple des revêtements textiles ou d'autres revêtements souples, des petits rouleaux, des bagues de guidage de feuilles, des surfaces sans maculature.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88100155T ATE70495T1 (de) | 1987-01-22 | 1988-01-08 | Foerdervorrichtung fuer eine bogenrotationsdruckmaschine. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873701767 DE3701767A1 (de) | 1987-01-22 | 1987-01-22 | Foerdervorrichtung fuer eine bogenrotationsdruckmaschine |
DE3701767 | 1987-01-22 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0275882A2 EP0275882A2 (fr) | 1988-07-27 |
EP0275882A3 EP0275882A3 (en) | 1989-12-13 |
EP0275882B1 true EP0275882B1 (fr) | 1991-12-18 |
Family
ID=6319298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88100155A Expired - Lifetime EP0275882B1 (fr) | 1987-01-22 | 1988-01-08 | Dispositif de transport pour une machine d'impression rotative à feuilles |
Country Status (5)
Country | Link |
---|---|
US (1) | US4858910A (fr) |
EP (1) | EP0275882B1 (fr) |
JP (1) | JPH0659732B2 (fr) |
AT (1) | ATE70495T1 (fr) |
DE (2) | DE3701767A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3930747A1 (de) * | 1989-09-14 | 1991-03-28 | Roland Man Druckmasch | Bogenfuehrungstrommel in rotationsdruckmaschinen |
DE4434624C2 (de) * | 1994-09-28 | 1997-11-20 | Heidelberger Druckmasch Ag | Vorrichtung zur Passerkorrektur und zum Ausgleich verspannter Bogen im Anleger einer Bogenrotationsdruckmaschine |
DE19611124B4 (de) * | 1996-03-21 | 2012-07-26 | Heidelberger Druckmaschinen Ag | Bogenübertragungseinrichtung einer Bogenrotationsdruckmaschine |
DE10102226A1 (de) * | 2001-01-19 | 2002-07-25 | Heidelberger Druckmasch Ag | Bogentransporttrommel |
DE10157117A1 (de) * | 2001-11-21 | 2003-05-28 | Koenig & Bauer Ag | Bogenausleger für eine bogenverarbeitende Maschine |
US20090035046A1 (en) * | 2007-07-31 | 2009-02-05 | Belbey Jason S | Print drum |
DE102007061556B4 (de) * | 2007-12-18 | 2011-06-09 | Kba-Metronic Aktiengesellschaft | Transportzylinder, mit beweglicher Greifervorrichtung und Verfahren zum Transportieren von Bögen |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2111049A1 (de) * | 1971-03-09 | 1972-09-21 | Koenig & Bauer Schnellpressfab | Kettenausleger fuer Bogendruckmaschinen |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD76684A (fr) * | ||||
US3334897A (en) * | 1965-05-25 | 1967-08-08 | Richard E Sharkey | Method and apparatus for controlling curvature in printed sheets being withdrawn from an impression cylinder |
DE2017417B2 (de) * | 1970-04-11 | 1972-07-20 | Maschf Augsburg Nuernberg Ag | Bogenübergabetrommel an Bogenrotationsoffsetdruckmaschinen |
US4202268A (en) * | 1973-11-22 | 1980-05-13 | Heidelberger Druckmaschinen Aktiengesellschaft | Transfer drum for printing presses with devices for gripping the leading and trailing edges of a sheet which is being imprinted |
SE7701468L (sv) * | 1976-02-18 | 1977-08-19 | Maschf Augsburg Nuernberg Ag | Bojstyv griparvagn, serskilt avsedd for offsettryckmaskiner |
DE2724621A1 (de) * | 1977-06-01 | 1978-12-14 | Maschf Augsburg Nuernberg Ag | Bogenwendevorrichtung einer bogen- rotations-druckmaschine in reihenbauart |
DE3036790C2 (de) * | 1980-09-30 | 1982-11-11 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | Bogenübergabetrommel für auf Schön- und Widerdruck umstellbare Bogenrotationsdruckmaschinen |
DE3114581C2 (de) * | 1981-04-10 | 1984-01-19 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Fördervorrichtung für eine Bogen-Rotationsdruckmaschine |
DE3447596A1 (de) * | 1984-12-28 | 1986-07-03 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | Bogenuebertragungszylinder fuer bogenrotationsdruckmaschinen |
DE3508699A1 (de) * | 1985-03-12 | 1986-09-25 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Hoehenverstellbare greiferauflagen fuer wendetrommelgreifer in wendetrommeln von schoen- und widerdruckmaschinen |
-
1987
- 1987-01-22 DE DE19873701767 patent/DE3701767A1/de active Granted
- 1987-01-22 US US07/146,966 patent/US4858910A/en not_active Expired - Fee Related
-
1988
- 1988-01-08 DE DE88100155T patent/DE3866881D1/de not_active Expired - Lifetime
- 1988-01-08 EP EP88100155A patent/EP0275882B1/fr not_active Expired - Lifetime
- 1988-01-08 AT AT88100155T patent/ATE70495T1/de active
- 1988-01-21 JP JP63009756A patent/JPH0659732B2/ja not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2111049A1 (de) * | 1971-03-09 | 1972-09-21 | Koenig & Bauer Schnellpressfab | Kettenausleger fuer Bogendruckmaschinen |
Also Published As
Publication number | Publication date |
---|---|
JPH0659732B2 (ja) | 1994-08-10 |
ATE70495T1 (de) | 1992-01-15 |
US4858910A (en) | 1989-08-22 |
DE3866881D1 (fr) | 1992-01-30 |
EP0275882A2 (fr) | 1988-07-27 |
JPS63193839A (ja) | 1988-08-11 |
DE3701767A1 (de) | 1988-08-04 |
DE3701767C2 (fr) | 1989-01-05 |
EP0275882A3 (en) | 1989-12-13 |
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