EP0485912B1 - Bearing for a printing unit cylinder - Google Patents

Bearing for a printing unit cylinder Download PDF

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Publication number
EP0485912B1
EP0485912B1 EP91119115A EP91119115A EP0485912B1 EP 0485912 B1 EP0485912 B1 EP 0485912B1 EP 91119115 A EP91119115 A EP 91119115A EP 91119115 A EP91119115 A EP 91119115A EP 0485912 B1 EP0485912 B1 EP 0485912B1
Authority
EP
European Patent Office
Prior art keywords
lever
cylinder
side wall
roller
journal
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
Application number
EP91119115A
Other languages
German (de)
French (fr)
Other versions
EP0485912A1 (en
Inventor
Klaus Reichenbach
Klaus Matthes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0485912A1 publication Critical patent/EP0485912A1/en
Application granted granted Critical
Publication of EP0485912B1 publication Critical patent/EP0485912B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/10—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
    • B41F27/105—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders for attaching cylindrical printing formes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/20—Supports for bearings or supports for forme, offset, or impression cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/20—Means enabling or facilitating exchange of tubular printing or impression members, e.g. printing sleeves, blankets
    • B41P2227/21—Means facilitating exchange of sleeves mounted on cylinders without removing the cylinder from the press

Definitions

  • the invention relates to a bearing for a printing couple cylinder of a web-fed rotary printing press according to the preamble of patent claim 1.
  • Such storage of a cylinder is presented in DE-OS 27 24 653.
  • the cylinder is then held on one side for changing the jacket of the cylinder by a working cylinder engaging the pin protruding from the side wall of the machine.
  • a working cylinder engaging the pin protruding from the side wall of the machine.
  • an articulated head on which the working cylinder is articulated, is arranged on the journal and is mounted on a roller bearing.
  • a disadvantage of this device is that the working cylinder is connected to its journal even when the cylinder is in operation. Concentricity of the pin causes constant friction between the piston rod and the stuffing box of the working cylinder, which leads to failures of the working cylinder and downtimes of the printing press. Furthermore, the printing unit cylinder is only fixed in the pulling direction of the working cylinder, which means that the jacket can only be guided through the opening of the side wall with difficulty and with the risk of damage. In addition, the one-sided fixation of the printing unit cylinder suggests the storage of its journal in a self-aligning bearing.
  • EP 0 279 394 A3 shows a device which holds a printing unit cylinder in suspension in such a way that an eccentric shaft with a recess, embodying a conical roller, presses on the pin protruding from the printing unit side wall. To operate the shaft, it carries a square.
  • the object is achieved in a generic device by the objective features of the characterizing part of claim 1.
  • the cylinder is reliably held on all sides with the pivoted rollers. This creates the conditions for a gentle change of the cylinder jacket and the avoidance of edge pressure on the bearing of the cylinder.
  • the latter makes it possible to dispense with a self-aligning bearing.
  • the force is also on the Bearings kept lower when changing the cylinder jacket.
  • the auxiliary device is not in contact with the printing unit cylinder during printing operation and is therefore not subject to increased wear which causes machine downtimes.
  • the roller can advantageously be manufactured and enables a good adjustment of the printing unit cylinder if it is composed according to the invention from two tapered rollers which are arranged on both sides of the pivotable lever.
  • the lever requires only low actuation forces with the possibility of using small and inexpensive drive means which can be operated in an energy-saving manner if it can be pivoted according to the invention with its lever arm carrying the roller into an end position perpendicular to the pin.
  • the cylinder is advantageously adjustable if, according to the invention, the lever carries a threaded piece with right and left hand threads.
  • FIG. 1 shows a cylinder 1, for example a form or transfer cylinder of an offset rotary printing press, which carries an exchangeable jacket 2.
  • the pin 3; 4 of the cylinder 1 are in the machine side walls 5; 6 stored.
  • the bearing of the pin 4 is housed in a wall piece, not shown, which is removable and thus opens an opening 7 in the machine side wall 6.
  • the pin 3 is received in a bearing 8.
  • a roller 9 can be placed, which is arranged vertically above the pin 3 on a lever 10 mounted in the frame. The latter is acted upon by a working cylinder 11 pivotably mounted in the frame.
  • the roller is made of two tapered rollers 12; 13 assembled (Fig.
  • the lever 10 is mounted in a fork 15 fastened to the machine side wall 5. For its length adjustment it contains a threaded piece 16 with right and left hand threads (Fig. 2).
  • Another roller 17, which is the same as roller 9, is arranged inside the machine side wall 5 under the pin 3. It is attached to a corresponding, only angled lever 18 which is mounted in the frame and is connected to a working cylinder 19.
  • the latter is moved axially by the cylinder 1 through the opening 7 of the machine side wall 6 out of the printing press.
  • the rollers 9 and 17 by means of the working cylinders 11 and 19 in the pivoted position shown in Figure 1.
  • the cylinder 1 is held on one side in its position assumed in the printing operation.
  • This position can be adjusted by changing the position of the rollers 9 and 17 in the horizontal and vertical.
  • the roller 9 can be adjusted vertically by lengthening or shortening the lever 10 by turning the threaded part 16.
  • the horizontal adjustment can be made by changing the position of the tapered rollers 12 and 13 with respect to the lever 10 by inserting shims.
  • the working cylinder is held by two rollers on both sides of the machine side wall. Also part of the subject matter of the invention, the cylinder can only be trimmed with a roller arranged outside or inside the machine side wall.

Description

Die Erfindung betrifft eine Lagerung für einen Druckwerkzylinder einer Rollenrotationsdruckmaschine gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a bearing for a printing couple cylinder of a web-fed rotary printing press according to the preamble of patent claim 1.

Eine derartige Lagerung eines Zylinders wird in der DE-OS 27 24 653 vorgestellt. Danach wird für den Wechsel des Mantels des Zylinders letzterer einseitig gehalten, indem am aus der Maschinenseitenwand herausragenden Zapfen ein Arbeitszylinder angreift. Auf dem Zapfen ist hierfür, auf einem Wälzlager gelagert, ein Gelenkkopf angeordnet, an dem der Arbeitszylinder angelenkt ist.Such storage of a cylinder is presented in DE-OS 27 24 653. The cylinder is then held on one side for changing the jacket of the cylinder by a working cylinder engaging the pin protruding from the side wall of the machine. For this purpose, an articulated head, on which the working cylinder is articulated, is arranged on the journal and is mounted on a roller bearing.

Bei dieser Vorrichtung ist von Nachteil, daß der Arbeitszylinder auch im Betrieb des Zylinders mit dessen Zapfen in Verbindung steht. Rundlauffehler des Zapfens verursachen dabei ständige Reibung zwischen der Kolbenstange und der Stopfbuchse des Arbeitszylinders, was zu Ausfällen des Arbeitszylinders und Stillstandszeiten der Druckmaschine führt. Weiterhin wird der Druckwerkszylinder nur in der Zugrichtung des Arbeitszylinders fixiert, wodurch der Mantel nur erschwert und unter der Gefahr seiner Beschädigung durch die Öffnung der Seitenwand geführt werden kann. Außerdem legt die einseitige Fixierung des Druckwerkzylinders die Lagerung seines Zapfens in einem Pendellager nahe.A disadvantage of this device is that the working cylinder is connected to its journal even when the cylinder is in operation. Concentricity of the pin causes constant friction between the piston rod and the stuffing box of the working cylinder, which leads to failures of the working cylinder and downtimes of the printing press. Furthermore, the printing unit cylinder is only fixed in the pulling direction of the working cylinder, which means that the jacket can only be guided through the opening of the side wall with difficulty and with the risk of damage. In addition, the one-sided fixation of the printing unit cylinder suggests the storage of its journal in a self-aligning bearing.

Die EP 0 279 394 A3 zeigt eine Vorrichtung, die einen Druckwerkzylinder derartig in der Schwebe hält, daß eine exzentrische Welle mit einer Eindrehung, eine konische Rolle verkörpernd, auf den aus der Druckwerkseitenwand herausstehenden Zapfen drückt. Zur Betätigung der Welle trägt diese ein Vierkant.EP 0 279 394 A3 shows a device which holds a printing unit cylinder in suspension in such a way that an eccentric shaft with a recess, embodying a conical roller, presses on the pin protruding from the printing unit side wall. To operate the shaft, it carries a square.

Es ist Aufgabe der Erfindung, eine vorteilhafte Lagerung und Mittel zur Erzeugung der An- und Abstellung der Rolle bezüglich des Zylinderzapfens zu schaffen.It is an object of the invention to provide an advantageous storage and means for generating the turning on and turning off of the roller with respect to the cylinder journal.

Erfindungsgemäß wird die Aufgabe bei einer gattungsgemäßen Vorrichtung durch die gegenständlichen Merkmale des Kennzeichens des Anspruchs 1 gelöst. Mit der bzw. den angeschwenkten Rollen wird der Zylinder zuverlässig allseitig gehalten. Dadurch sind die Voraussetzungen für einen schonenden Wechsel des Zylindermantels und die Vermeidung von Kantenpressung des Lagers des Zylinders gegeben. Letzteres ermöglicht den Verzicht auf ein Pendellager. Bei der Anordnung von Rollen beidseits der Maschinenseitenwand wird außerdem die Kraft auf das Lager beim Wechseln des Zylindermantels niedriger gehalten. Die Hilfsvorrichtung steht im Druckbetrieb nicht mit dem Druckwerkzylinder in Kontakt und ist somit keinem erhöhten, Maschinenstillstände verursachenden Verschleiß unterworfen.According to the invention, the object is achieved in a generic device by the objective features of the characterizing part of claim 1. The cylinder is reliably held on all sides with the pivoted rollers. This creates the conditions for a gentle change of the cylinder jacket and the avoidance of edge pressure on the bearing of the cylinder. The latter makes it possible to dispense with a self-aligning bearing. With the arrangement of rollers on both sides of the machine side wall, the force is also on the Bearings kept lower when changing the cylinder jacket. The auxiliary device is not in contact with the printing unit cylinder during printing operation and is therefore not subject to increased wear which causes machine downtimes.

Die Rolle ist vorteilhaft fertigbar und ermöglicht eine gute Justierung des Druckwerkzylinders, wenn sie erfindungsgemäß aus zwei Kegelrollen zusammengesetzt ist, die beidseits des schwenkbaren Hebels angeordnet sind.The roller can advantageously be manufactured and enables a good adjustment of the printing unit cylinder if it is composed according to the invention from two tapered rollers which are arranged on both sides of the pivotable lever.

Der Hebel erfordert nur niedrige Betätigungskräfte mit der Möglichkeit des Einsatzes kleiner und kostengünstiger sowie energiesparend betreibbarer Antriebsmittel, wenn er erfindungsgemäß mit seinem die Rolle tragenden Hebelarm in eine zum Zapfen senkrechte Endlage schwenkbar ist.The lever requires only low actuation forces with the possibility of using small and inexpensive drive means which can be operated in an energy-saving manner if it can be pivoted according to the invention with its lever arm carrying the roller into an end position perpendicular to the pin.

Der Zylinder ist vorteilhaft justierbar, wenn erfindungsgemäß der Hebel ein Gewindestück mit Rechts- und Linksgewinde trägt.The cylinder is advantageously adjustable if, according to the invention, the lever carries a threaded piece with right and left hand threads.

Die Erfindung soll nachfolgend an einem Ausführungsbeispiel näher erläutert werden. In den zugehörigen Zeichnungen zeigt

Fig. 1:
einen Druckwerkzylinder, schematisch im Längsschnitt
Fig. 2:
die Einzelheit Z nach Figur 1
Fig. 3:
die Ansicht X nach Figur 2
The invention will be explained in more detail using an exemplary embodiment. In the accompanying drawings
Fig. 1:
a printing unit cylinder, schematically in longitudinal section
Fig. 2:
the detail Z according to FIG. 1
Fig. 3:
the view X according to FIG. 2

Figur 1 zeigt einen Zylinder 1, beispielsweise einen Form- oder übertragungszylinder einer Offset-Rotationsdruckmaschine, der einen auswechselbaren Mantel 2 trägt. Die Zapfen 3; 4 des Zylinders 1 sind in den Maschinenseitenwänden 5; 6 gelagert. Dabei wird das Lager des Zapfens 4 in einem nicht dargestellten Wandstück beherbergt, das entfernbar ist und so eine Öffnung 7 in der Maschinenseitenwand 6 freigibt. Der Zapfen 3 wird in einem Lager 8 aufgenommen. An sein aus der Maschinenseitenwand 5 herausragendes Ende ist eine Rolle 9 anstellbar, die senkrecht über dem Zapfen 3 an einem im Gestell gelagerten Hebel 10 angeordnet ist. An letzterem greift ein schwenkbar im Gestell gelagerter Arbeitszylinder 11 an. Die Rolle ist aus zwei Kegelrollen 12; 13 zusammengesetzt (Fig. 3), die beidseits des Hebels 10 auf einem Bundbolzen 14 angeordnet sind. Der Hebel 10 ist in einer an der Maschinenseitenwand 5 befestigten Gabel 15 gelagert. Er enthält zu seiner Längenverstellung ein Gewindestück 16 mit Rechts- und Linksgewinde (Fig. 2). Eine weitere, der Rolle 9 gleichende Rolle 17 ist innerhalb der Maschinenseitenwand 5 unter dem Zapfen 3 angeordnet. Sie ist an einem entsprechenden, lediglich abgewinkelten Hebel 18 befestigt, der im Gestell gelagert ist und mit einem Arbeitszylinder 19 in Verbindung steht.FIG. 1 shows a cylinder 1, for example a form or transfer cylinder of an offset rotary printing press, which carries an exchangeable jacket 2. The pin 3; 4 of the cylinder 1 are in the machine side walls 5; 6 stored. The bearing of the pin 4 is housed in a wall piece, not shown, which is removable and thus opens an opening 7 in the machine side wall 6. The pin 3 is received in a bearing 8. At its end protruding from the machine side wall 5, a roller 9 can be placed, which is arranged vertically above the pin 3 on a lever 10 mounted in the frame. The latter is acted upon by a working cylinder 11 pivotably mounted in the frame. The roller is made of two tapered rollers 12; 13 assembled (Fig. 3), which are arranged on both sides of the lever 10 on a collar bolt 14. The lever 10 is mounted in a fork 15 fastened to the machine side wall 5. For its length adjustment it contains a threaded piece 16 with right and left hand threads (Fig. 2). Another roller 17, which is the same as roller 9, is arranged inside the machine side wall 5 under the pin 3. It is attached to a corresponding, only angled lever 18 which is mounted in the frame and is connected to a working cylinder 19.

Zum Wechseln des Mantels 2 wird dieser axial von dem Zylinder 1 durch die Öffnung 7 der Maschinenseitenwand 6 aus der Druckmaschine bewegt. Dazu werden vor, der Freigabe der Öffnung 7 die Rollen 9 und 17 mittels der Arbeitszylinder 11 und 19 in die in Figur 1 gezeichnete Lage geschwenkt. Hierdurch wird der Zylinder 1 einseitig in seiner im Druckbetrieb eingenommenen Lage gehalten. Diese Position kann durch die Veränderung der Stellung der Rollen 9 und 17 in der Horizontalen und Vertikalen justiert werden. Vertikal kann die Rolle 9 durch Verlängern oder Verkürzen des Hebels 10 durch Verdrehen des Gewindestückes 16 verstellt werden. Die Justierung in der Horizontalen kann durch die Veränderung der Lage der Kegelrollen 12 und 13 bezüglich des Hebels 10 durch Beilegen von Paßscheiben erfolgen. Eine Justierung zur Erreichung der senkrechten Stellung des Hebels 10 auf dem Zapfen 3 ist durch Änderung der Schwenkstellung des Hebels 10 durch Veranderung der Einschraubtiefe der Kolbenstange 20 des Arbeitszylinders 11 in den Gabelkopf 21 möglich. Die Verstellung der Lage der Rolle 17 und des Hebels 18 erfolgt in analoger Weise. Für den Druckbetrieb des Zylinders 1 werden die Rollen 9 und 17 durch Umsteuern der Arbeitszylinder 11 und 19 vom Zapfen 3 abgeschwenkt.To change the jacket 2, the latter is moved axially by the cylinder 1 through the opening 7 of the machine side wall 6 out of the printing press. For this purpose, before opening the opening 7, the rollers 9 and 17 by means of the working cylinders 11 and 19 in the pivoted position shown in Figure 1. As a result, the cylinder 1 is held on one side in its position assumed in the printing operation. This position can be adjusted by changing the position of the rollers 9 and 17 in the horizontal and vertical. The roller 9 can be adjusted vertically by lengthening or shortening the lever 10 by turning the threaded part 16. The horizontal adjustment can be made by changing the position of the tapered rollers 12 and 13 with respect to the lever 10 by inserting shims. An adjustment to achieve the vertical position of the lever 10 on the pin 3 is possible by changing the pivoting position of the lever 10 by changing the screwing depth of the piston rod 20 of the working cylinder 11 into the fork head 21. The position of the roller 17 and the lever 18 is adjusted in an analogous manner. For the printing operation of the cylinder 1, the rollers 9 and 17 are pivoted away from the pin 3 by reversing the working cylinders 11 and 19.

Im Auführungsbeispiel wird der Arbeitszylinder von zwei Rollen beidseits der Maschinenseitenwand gehalten. Ebenfalls zum Gegenstand der Erfindung gehörig kann das Stutzen des Zylinders auch nur mit einer außerhalb oder innerhalb der Maschinenseitenwand angeordneten Rolle erfolgen.In the example, the working cylinder is held by two rollers on both sides of the machine side wall. Also part of the subject matter of the invention, the cylinder can only be trimmed with a roller arranged outside or inside the machine side wall.

Claims (6)

  1. Bearing for a printing unit cylinder (1) in a web-fed rotary printing machine having an auxiliary device for one-sided holding of the cylinder (1), which carries an exchangeable casing (2) which to this end can be pushed laterally through an aperture (7) in a machine side wall (6), having a respective roller (9, 17) with a concave envelope surface outside and/or inside the other machine side wall (5) which can be set on the journal (3) of the cylinder (1) mounted in this side wall (5) so as to support this journal, characterised in that the roller (9, 17) is mounted in a lever (10, 18) arranged rotatably in the machine side wall (5) and pivotable in the longitudinal direction of the journal (3), on which lever a working cylinder (11, 19) engages.
  2. Bearing according to claim 1, characterised in that the lever (10, 18) with its lever arm carrying the roller (9, 17) is pivotable into an end position perpendicular to the journal (3).
  3. Bearing according to claim 1 or 2, characterised in that the piston rod (20) of the working cylinder (11, 19) is screwed into a fork head (21) which is hingedly joined to the lever (10, 18), and the screw-in depth of the piston rod (20) into the fork head (21) can be varied.
  4. Bearing according to one of claims 1 to 3, characterised in that the lever (10, 18) carries a threaded piece (16) having a right-hand and left-hand thread.
  5. Bearing according to one of the preceding claims, characterised in that the roller (9, 17) is composed of two conical rollers (12, 13) which are arranged on both sides of the pivotable lever (10, 18).
  6. Bearing according to claim 5, characterised in that the conical rollers (12, 13) can be varied in respect of their distance from the lever (10, 18).
EP91119115A 1990-11-15 1991-11-11 Bearing for a printing unit cylinder Expired - Lifetime EP0485912B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4036387A DE4036387A1 (en) 1990-11-15 1990-11-15 STORAGE FOR A PRINTING CYLINDER
DE4036387 1990-11-15

Publications (2)

Publication Number Publication Date
EP0485912A1 EP0485912A1 (en) 1992-05-20
EP0485912B1 true EP0485912B1 (en) 1995-06-14

Family

ID=6418310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91119115A Expired - Lifetime EP0485912B1 (en) 1990-11-15 1991-11-11 Bearing for a printing unit cylinder

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EP (1) EP0485912B1 (en)
DE (2) DE4036387A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5237920A (en) * 1992-06-22 1993-08-24 Heidelberg Harris Inc. Apparatus for supporting a cylinder in a rotary printing unit
DE4427944C1 (en) * 1994-08-06 1995-11-02 Koenig & Bauer Ag Fixing device for flexible print plates with edged ends on roller of rotary press
DE4427945C1 (en) * 1994-08-06 1995-11-02 Koenig & Bauer Ag Flexible plate with bent ends for mounting on a cylinder of a rotary printing press
DE19603500A1 (en) * 1996-01-31 1997-08-07 Polywest Kunststofftechnik Sleeve for a rotogravure roller, process for its production and working method of the device for the production
FR2778599B1 (en) * 1998-05-13 2000-08-04 Heidelberger Druckmasch Ag DEVICE FOR MOVING CYLINDERS OF PRINTING UNITS OF ROTARY PRINTING MACHINES
NL1011994C2 (en) * 1999-05-07 2000-11-09 Stork Brabant Bv Rotary screen printing device with squeegee support means.
ATE353046T1 (en) 2000-05-17 2007-02-15 Eastman Kodak Co INTERCHANGEABLE CYLINDER ELEMENTS ON ELECTROGRAPHIC PRINTING UNITS
CN109591455A (en) * 2018-12-31 2019-04-09 高斯图文印刷系统（中国）有限公司 It is a kind of for replacing the pressing device of plate cylinder sleeve
CN109624485B (en) * 2019-01-28 2020-08-11 汕头市精工东捷制版有限公司 Printing plate roller of gravure press
CN113183623A (en) * 2021-04-29 2021-07-30 无锡光群雷射科技有限公司 Quick plate changing device and plate changing method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500319A1 (en) * 1984-12-04 1986-06-05 Windmöller & Hölscher, 4540 Lengerich STORAGE FOR FORMAT CYLINDERS OF A PRINTING MACHINE, PREFERABLY FLEXO PRINTING MACHINE, WITH REPLACABLE SLEEVE-SHAPED FORMAT CYLINDER MATERIALS
DE3705477C1 (en) * 1987-02-20 1988-05-26 Roland Man Druckmasch Holding device for applying a sleeve to a cylinder

Also Published As

Publication number Publication date
DE59105709D1 (en) 1995-07-20
EP0485912A1 (en) 1992-05-20
DE4036387A1 (en) 1992-05-21

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