EP0737574B1 - Dispositif pour tendre dans une machine à imprimer rotative - Google Patents

Dispositif pour tendre dans une machine à imprimer rotative Download PDF

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Publication number
EP0737574B1
EP0737574B1 EP96111131A EP96111131A EP0737574B1 EP 0737574 B1 EP0737574 B1 EP 0737574B1 EP 96111131 A EP96111131 A EP 96111131A EP 96111131 A EP96111131 A EP 96111131A EP 0737574 B1 EP0737574 B1 EP 0737574B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
spindle
clamping spindle
clamping
blanket
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
EP96111131A
Other languages
German (de)
English (en)
Other versions
EP0737574A3 (fr
EP0737574A2 (fr
Inventor
Georg Schneider
Wolfgang Otto Reder
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer 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
Priority claimed from DE4326248A external-priority patent/DE4326248C2/de
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0737574A2 publication Critical patent/EP0737574A2/fr
Publication of EP0737574A3 publication Critical patent/EP0737574A3/fr
Application granted granted Critical
Publication of EP0737574B1 publication Critical patent/EP0737574B1/fr
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
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/125—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end on a curvilinear path, e.g. by winding on a roll

Definitions

  • the invention relates to a device for fastening and tensioning a flexible arcuate article e.g. B. in the form of a rubber blanket, a printing blanket or a printing plate on a cylinder Rotary printing machine according to the Claim 1.
  • DE 26 06 223 A1 describes a device for Tensioning the rubber blanket of an offset printing machine became known in which two in one channel arranged, parallel to the cylinder axis Clamping spindles are provided, each one Have slot for receiving one end of one Blanket. Each is on the front of the cylinder a worm wheel is provided, which with a worm can be rotated.
  • the disadvantage of this device is that the Tension the rubber blanket act torsional forces, so that the tension shaft is twisted in its longitudinal direction, resulting in an uneven tension of the blanket leads, especially in rotary printing machines large Print width.
  • DE 81 01 707 U1 is a device for Attach and stretch a rubber blanket or one Printing plate on a cylinder of an offset printing machine became known, in which one in a channel arranged, parallel to the cylinder pit Clamping spindle is provided, which at its ends over Worm wheels and worms is rotatable.
  • GB-A-266 520 is a device for fastening and Stretch rubber blankets or flexible printing plates to be taken from a cylinder of a printing press.
  • a one-piece clamping spindle is with an outside of the Provided end of the cylinder pit on the one Gear is rotatably attached. This is driven Gear and thus the clamping spindle through a likewise arranged outside the cylinder, back and forth sliding rack.
  • EP 05 29 446 A1 shows a device for Attach and clamp a flexible arched Object on a cylinder one Rotary printing press.
  • a rotating spindle is provided in the cylinder pit. It has a serration on its circumference into which an idler engages.
  • the intermediate wheel is by means of driven by a vertically movable rack.
  • the US 27 78 307 A describes a tensioning device for a printing plate. This will be one end of the pressure plate on a toothed suspension rail attached. These gears reach within one Cog teeth of a clamping spindle on. The clamping spindle is driven outside the Cylinder pit.
  • the invention has for its object a Attachment device and one over the entire Length of the clamping spindle uniform clamping one Blanket, printing blanket or printing plate on one To create cylinders of a printing press with which an automatic and also during operation uniform tensioning of the printing blanket over the entire web width.
  • the clamping spindle arranged and tangential to Actuator elements acting on the clamping spindle take place torsion-free turning of the clamping spindle and thus an even tension of the blanket over the entire width of the cylinder.
  • the clamping spindle movable racks By the arrangement of compression springs in the transverse to the axis of rotation the clamping spindle movable racks a constant, even during operation Tensioning the rubber blanket, printing blanket or one Printing plate.
  • a controllable drive e.g. B. a compressed air hose is a tool-free Tensioning the blanket allows.
  • clamping spindle pieces can be divided into clamping spindle pieces, so that the clamping spindle pieces each individually an intermediate space between the bearer ring and the Clamping device, e.g. B. removed for cleaning purposes can be without the cylinder to do so from the Rotary printing machine must be removed.
  • the object of the invention relates essentially a one-piece clamping spindle; multi-part clamping spindles are not the subject of the present invention.
  • a hinted Cylinder 2 extends a total of 3 designated device for holding a beginning of an object described below and clamping from one located on the jacket of the cylinder 2 arcuate, flexible object 10, z.
  • the cylinder pit 1 has a flat Floor area 4 and two delimiting the floor area 4 Side surfaces 6, 7.
  • the in the cylinder pit 1 arranged device 3 extends in axially parallel direction to the cylinder 2.
  • An insert bar extends from the first side surface 6 8 with an acute parallel axis Edge 9 for receiving an angled first end 48 of the printing blanket 10.
  • the insert bar 8 sits with its second end near the bottom surface 4 on one Base plate 11.
  • a second insert bar 12 Extends along the second side surface 7 a second insert bar 12 with an acute angle running, axially parallel, rounded edge 13, over which a second end 49 of the printing blanket 10 drawn and one to be described in more detail Tensioning spindle 14 for tensioning the second blanket end 49 is supplied.
  • the blanket 10 has at each end 48, 49 a border 51.
  • the bezel 51 of the first blanket end 48 engages behind one in the insert bar 8 parallel to an axis of rotation 52 extending hooking edge 53 of a groove 54.
  • Die Insert bar 8 is together with insert bar 12 executed in one piece via webs, not shown, and has cavities for receiving clamping spindle pieces 14.1 to 14.4 and racks 18 to 22.
  • the Insert bar 12 is in Fig. 1 only with its end faces indicated.
  • the clamping spindle 14 has a essential circular cross-section with a slot 16 for receiving the second end 49 of the to be exciting Blanket 10 on.
  • the slot 16 diametrically on
  • the tip circle of the toothing 17 can be the diameter correspond to the clamping spindle 14.
  • the clamping spindle 14 is different in length, e.g. B. four equally long clamping spindle pieces 14.1, 14.2, 14.3, 14.4 divided, of which in Fig. 1 the clamping spindle piece 14.4 has not been shown. That also applies to another rack too, on which that is not illustrated spindle piece 14.4 with its second supports the front end.
  • These spindle pieces 14.1 to 14.4 engage with the base plate 11 facing side with the toothing 17 into the top of racks 18, 19, 21, 22 on.
  • the racks 18 to 22 have one square cross-section, correspond in their Length l of 0.6 times to 0.8 times the width b of Cylinder pit 1 and are with their bottom surface on the Base plate 11 of the cylinder pit 1 against each Force of a spring 23, 24, 26, 27 in the circumferential direction of the cylinder 2 movable.
  • the racks 18 to 22 can also consist of a round cross-section.
  • the racks 18, 19, 21, 22 are each under at the ends 29, 30, 31, 32, 33, 34 of the clamping spindle pieces 14.1, 14.2, 14.3, 14.4 of the Clamping spindle 14 arranged so that the first end 29 of the clamping spindle piece 14.1 in the rack 18 engages the second end 30 of the clamping spindle piece 14.1 and the first end 31 of the clamping spindle piece 14.2 engages in the rack 19, the second end 32 of the clamping spindle piece and the first end 33 of the clamping spindle piece 14.3 in the rack 21, the second end 34 of the clamping spindle piece 14.3 and that not shown first end of the clamping spindle piece 14.4 engages in the rack 22.
  • the racks 18, 19, 21, 22 have cohesive their top each on a pin 36, each in a round-ended in the insert bar 8 Slot 37 engages.
  • All slots 37 are parallel to each other and parallel arranged to the end faces of the cylinder 2.
  • the springs 27 can also be in a first End face 38 of the rack 18, 19, 21, 22 located Blind hole 39 be held.
  • One each second side surface 7 facing the cylinder pit 1 second end face 41 of the toothed racks 18, 19, 21, 22 is non-positive and positive with a parallel to second side surface 7 of the cylinder pit 1 extending Platen 42, 43, 44, 45, e.g. B. by not shown screws connected.
  • This platen 42, 43, 44, 45 are slight in the axial direction spaced apart and have a radial Directional height h, which is larger than the stretched width e of an air hose 47, which in one piece in the axial direction between the Plates 42 to 45 and the second side surface 7 of the cylinder pit 1 is arranged.
  • the air hose 47 is closed at its first end and on its second end with a not shown Connection for the inlet and outlet of compressed air Mistake.
  • the first air hose is expedient 47 assigned a second air hose 57 in parallel, which also has a nozzle, not shown is pressurized with compressed air.
  • the compressed air with a pressure of 4 to 6 bar is not above one shown hose and a not shown Valve can be obtained from a compressed air system.
  • the stub is located on the front side of the device 3 and is with the cylinder 2 at a standstill the said hose connected.
  • the device 3 is through through holes, not shown, in the Base plate 11 fastened in the cylinder pit 1.
  • screws provided with Tapped holes, not shown, of the bottom surface 4 the cylinder pit 1 interact.
  • the Base plate 11 with the one-piece insert strips 8, 12 connected by means of retaining screws, not shown.
  • the insert strips 8, 12 are on the clamping spindle 14 facing the circumference of the clamping spindle 14 adjusted, but so that between the insert bar 8th and the slot 16 of the clamping spindle 14 the second End 49 of the blanket 10 can be added.
  • the Clamping spindle 14 can also be made in one piece.
  • the first end 48 of the rubber blanket 10 is seen in a cross section, extending axially parallel in the radial direction Brought groove 54 and behind by means of the border 51 the hanging edge 53 hooked.
  • the printing blanket 10 will now placed around the edge 9 of the insert bar 8.
  • Rotation of the cylinder 2 enters the second end 49 the area of the edge 13 of the insert bar 12 and inserted with its border 51 in the slot 16 (Fig. 3).
  • the air hoses 47, 57 are included Compressed air applied.
  • the compressed air supply is used to clamp the clamping spindle 14 interrupted so that the compressed air from the Air hoses 47, 57 and springs 23, 24, 26, 27 the racks 18, 19, 21, 22 synchronously over the Clamping spindle pieces 14.1, 14.2, 14.3, 14.4 back in bring the clamping position (Fig. 2).
  • the printing blanket 10 is excited.
  • Cleaning or maintenance work can Clamping spindle pieces 14.1, 14.2, 14.3, 14.4 from one Gap that is in the cylinder pit 1 between the end of the device 3 and one not shown Bearer ring is removed.
  • the locking of a clamping spindle 14 shown the effects of the flexing movement of the To minimize printing blanket 10 when cylinder 2 is moved counterclockwise C.
  • This is in the Cylinder pit 1 parallel to the racks 18, 19, 21, 22 a locking device designated overall by 56 provided which is synchronous with the above.
  • Rack 18, 19, 21, 22 transverse to the axis of rotation 52 of the Clamping spindle 14 moves.
  • the locking device 56 exists from a rack 58 with a bore 59 for Picking up a bolt 61, which on its first Non-positive and positive end with a support plate 62 is connected, which in turn by means of compression springs 63 from the second end face 41 of the rack 58 is spaced.
  • the bolt 61 points to his second chamfer 64.
  • a two-armed lever 66 which by means of a Retaining pin 67 is fixed to the rack.
  • a first one End 68 of the lever 66 is beveled and is in the case a blanket change with the chamfer 64 of the bolt 61 non-positive connection.
  • a second end 69 lever 66 is approximately 45 degrees from first end 68 angled towards the base plate 11 and engages its leading edge in a toothing 71, which in Shape of part of a rack in the bottom plate 11 are incorporated.
  • the two-armed lever 66 is against the force of a spring, not shown, with his second end 69 pressed into the teeth 71. The It works as follows: In the tensioned position after Fig.
  • the blanket 10 can be in a direction of rotation of the cylinder 2 in the counterclockwise direction C as a result Do not loosen the flexing movement as the lever 66 with its second end 69 in the toothing 71 of the base plate 11 engages.
  • the printing blanket 10 can, however, continue self-tension when the compression springs 23, 24, 26, 27 expand further. In this case the moves Rack 58 with their teeth 72 in the direction of Air hoses 47, 57 and the second end 69 of the lever 66 engages one tooth further to the right. Should now the tensioning device is relaxed for the purpose of changing the printing blanket are, so in the air hoses 47, 57 compressed air brought in.
  • the insert bar 8 shows an ejection element designated as a whole by 73 arranged, which consists of a in the insert 8th parallel to the direction of movement of the racks 18, 19, 21, 22 movably guided pin 74, which with its first end 76 with an unspecified Piston of a piston-cylinder unit 77 force and is positively connected.
  • the pin 74 presses in If the piston-cylinder unit 77 is actuated, e.g. B.
  • the sliding pins 74 can also be driven by means of an axis of rotation 52 of the clamping spindle 14 Camshaft arranged in parallel in the insert strip 8 respectively.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rotary Presses (AREA)
  • Testing Of Balance (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (2)

  1. Dispositif pour fixer et tendre un objet arqué souple (10) sur un cylindre (2) d'une rotative d'imprimerie au moyen d'une broche de mise en tension rotative (14) qui est disposée dans une dépression de cylindre (1) parallèlement à l'axe du cylindre et qui comporte un dispositif pour fixer l'objet arqué souple, une crémaillère (18 ; 19 ; 21 ; 22) montée mobile transversalement à l'axe de rotation (52) de la broche de mise en tension (14) étant prévue pour entraíner ladite broche de mise en tension (14), plusieurs crémaillères (18 ; 19 ; 21 ; 22) en prise avec une denture (17) située à la périphérie de la broche de mise en tension (14) étant montées coulissantes à l'intérieur de la dépression de cylindre (1), des ressorts (23 ; 24 ; 26 ; 27) étant prévus pour agir sur les crémaillères (18 ; 19 ; 21 ; 22) et pour mettre en rotation les broches de mise en tension (14) pour les besoins de la mise en tension, un organe de positionnement (47 ; 57) agissant sur une face frontale des crémaillères (18 ; 19 ; 21 ; 22) étant disposé pour agir à l'encontre de la force de précontrainte des ressorts (23 ; 24 ; 26 ; 27).
  2. Dispositif selon la revendication 1, caractérisé en ce que l'organe de positionnement prévu (47 ; 57) est une gaine d'air.
EP96111131A 1992-12-24 1993-12-14 Dispositif pour tendre dans une machine à imprimer rotative Expired - Lifetime EP0737574B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4244074 1992-12-24
DE4244074 1992-12-24
DE4326248 1993-08-05
DE4326248A DE4326248C2 (de) 1992-12-24 1993-08-05 Spannvorrichtung in einer Rotationsdruckmaschine
EP94901753A EP0675808B1 (fr) 1992-12-24 1993-12-14 Dispositif de tension sur une presse rotative

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP94901753.7 Division 1993-12-14
EP94901753A Division EP0675808B1 (fr) 1992-12-24 1993-12-14 Dispositif de tension sur une presse rotative

Publications (3)

Publication Number Publication Date
EP0737574A2 EP0737574A2 (fr) 1996-10-16
EP0737574A3 EP0737574A3 (fr) 1997-05-28
EP0737574B1 true EP0737574B1 (fr) 1999-05-19

Family

ID=25921783

Family Applications (2)

Application Number Title Priority Date Filing Date
EP94901753A Expired - Lifetime EP0675808B1 (fr) 1992-12-24 1993-12-14 Dispositif de tension sur une presse rotative
EP96111131A Expired - Lifetime EP0737574B1 (fr) 1992-12-24 1993-12-14 Dispositif pour tendre dans une machine à imprimer rotative

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP94901753A Expired - Lifetime EP0675808B1 (fr) 1992-12-24 1993-12-14 Dispositif de tension sur une presse rotative

Country Status (4)

Country Link
EP (2) EP0675808B1 (fr)
JP (1) JP3323202B2 (fr)
DE (4) DE9318667U1 (fr)
WO (1) WO1994014615A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20010395U1 (de) * 2000-06-09 2001-10-11 Heidelberger Druckmasch Ag Zylinder mit einer Klemmeinrichtung in einer Druckmaschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778307A (en) * 1953-04-14 1957-01-22 American Type Founders Co Inc Plate clamping means
EP0529446A1 (fr) * 1991-08-22 1993-03-03 KOENIG & BAUER-ALBERT AKTIENGESELLSCHAFT Dispositif pour fixer et tendre un blanchet sur un cylindre d'une machine à imprimer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB266520A (en) * 1926-02-01 1927-03-03 Fred Wesley Wright Improvements in and relating to tensioning devices for blankets and printing plates in printing machines
GB925101A (en) * 1959-05-22 1963-05-01 Carl Allers Ets Improvements in or relating to printing machine cylinders
GB953783A (en) * 1962-02-09 1964-04-02 Carl Allers Etab As Improvements in or relating to printing machine cylinders
DE2720673B2 (de) * 1977-05-07 1979-09-06 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Vorrichtung zum ungleichförmigen Spannen eines Gummituches in einer Offsetdruckmaschine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2778307A (en) * 1953-04-14 1957-01-22 American Type Founders Co Inc Plate clamping means
EP0529446A1 (fr) * 1991-08-22 1993-03-03 KOENIG & BAUER-ALBERT AKTIENGESELLSCHAFT Dispositif pour fixer et tendre un blanchet sur un cylindre d'une machine à imprimer

Also Published As

Publication number Publication date
DE9318667U1 (de) 1994-02-10
JP3323202B2 (ja) 2002-09-09
JPH08504694A (ja) 1996-05-21
DE9319411U1 (de) 1994-02-10
EP0675808B1 (fr) 1997-03-19
DE59309597D1 (de) 1999-06-24
EP0675808A1 (fr) 1995-10-11
DE59305910D1 (de) 1997-04-24
EP0737574A3 (fr) 1997-05-28
WO1994014615A1 (fr) 1994-07-07
EP0737574A2 (fr) 1996-10-16

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