EP0663360A2 - Cylindres de transfert de feuilles - Google Patents

Cylindres de transfert de feuilles Download PDF

Info

Publication number
EP0663360A2
EP0663360A2 EP94120046A EP94120046A EP0663360A2 EP 0663360 A2 EP0663360 A2 EP 0663360A2 EP 94120046 A EP94120046 A EP 94120046A EP 94120046 A EP94120046 A EP 94120046A EP 0663360 A2 EP0663360 A2 EP 0663360A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
axis
rotation
sheet
guide
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
Application number
EP94120046A
Other languages
German (de)
English (en)
Other versions
EP0663360A3 (fr
EP0663360B1 (fr
Inventor
Andreas Detmers
Joachim Herrmann
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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
Priority claimed from DE19944401114 external-priority patent/DE4401114C1/de
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0663360A2 publication Critical patent/EP0663360A2/fr
Publication of EP0663360A3 publication Critical patent/EP0663360A3/fr
Application granted granted Critical
Publication of EP0663360B1 publication Critical patent/EP0663360B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/245—Air blast devices
    • 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 further embodiment of a sheet guiding cylinder or main patent no. 42 23 839.
  • a special field of application of this generic sheet guiding cylinder is, for example, in a chain extension of a sheet-fed rotary printing press in which the sheet guiding cylinder immediately follows a printing cylinder.
  • the sheet guiding cylinder is located between two sprockets concentric to its axis of rotation, around which a pair of endless cantilever chains are wound, which convey gripper systems carried by them together with sheets clamped therein and taken over by the impression cylinder from the area of the impression cylinder to a sheet stacking device.
  • the task of the sheet guiding cylinder is to guide a respective sheet clamped in a gripper system within a deflection area determined by the chain wheels in such a way that on a freshly printed surface of the respective sheet facing the sheet guiding cylinder there is no loss of quality due to so-called lubrication.
  • an air cushion which is operationally supporting a respective sheet is provided, by means of which the respective sheet is kept away from the lateral surface of the sheet guiding cylinder.
  • This air cushion is generated with the help of an air flow emerging from the blade ring.
  • the blades of the blade ring have a curved blade profile.
  • the generic bow guide cylinder can thus expect a favorable ratio between the power expended to drive the blade ring on the one hand and the kinetic energy on the other hand, given the aerodynamically favorable curvature of the blade profile the air flow emerging from the blade ring is inherent.
  • such a fluidic optimization does not generally ensure that a respective sheet is safely kept away from the lateral surface of the sheet guiding cylinder.
  • operating conditions can occur in which an opposite effect occurs, namely that a static pressure reduced under the effect of the air flow emerging from the blade ring in the region of a respective bend and the bend guide cylinder has the result that the bend is pressed against the lateral surface of the bend guide cylinder .
  • Such operating states can occur, for example, when the mechanical properties of the sheets change and the sheet speeds of the sheets deviate from those in production printing.
  • the object of the invention is to improve a generic sheet guide cylinder in such a way that pressing the sheet against the lateral surface of the sheet guide cylinder is avoided in the event of changing operating states. This object is achieved with a sheet guide cylinder specified in the claim.
  • the air flow used to generate the air cushion mentioned has a substantially larger radial portion in its section impinging on a respective sheet than a sheet-guiding cylinder of the generic type.
  • An additional advantage lies in the fact that, in particular on the blade ring located within the cylinder housing, the flow losses through a suitable design of the Blade profile can be minimized regardless of the directional components of the air flow leaving this blade ring.
  • the flow losses at the guide vanes can also be minimized. Overall, stable operation in the aforementioned sense can thus be achieved with a sheet guiding cylinder according to the invention even without considerable additional effort in terms of power for driving the blade ring generating the air flow.
  • FIG. 1 shows a schematic illustration of a printing cylinder 1 and a section of a cantilever arm 2 following it.
  • This comprises a first and second side wall 3 and a first and second chain wheel 5 and 6 assigned to a second side wall 4 and 6 are 7 with respect to the axis of rotation (see FIG. 2) of a sheet guide cylinder arranged between them and rotatably encircled by a pair of endless cantilever chains 9, 10, which gripper systems 11 carried by them together with sheets clamped therein and taken over by the impression cylinder 1 from the area of the impression cylinder 1 to a sheet stacking device, not shown promote.
  • the sheets mentioned are not shown for reasons of clarity.
  • said sheet guide cylinder 8 has a cylinder housing which comprises end parts 13 and 14 provided with openings 12 and a cylinder jacket 15 surrounding the axis of rotation 7 in the form of a frame.
  • a respective one of the chain wheels 5 and 6 is also connected in a rotationally fixed manner to a respective axle section 16 or 17.
  • Operational rotation of the cylinder housing about the axis of rotation 7 takes place with the aid of a first rotary drive member 18 in the form of a gearwheel, which in the example shown is non-rotatably connected to the axis section provided with the reference number 16.
  • the gear wheel representing the first rotary drive member 18 can, moreover, be a known component of a gear train of the sheet-fed rotary printing press connected to a drive unit, with the aid of which, in the example presented, the sheet-guiding cylinder 8 and the sprockets 5 and 6 are then rotated together operationally about the axis of rotation 7.
  • rotatable blade ring 19 is provided within the cylinder housing.
  • the blade ring 19 is formed by means of blades 20, 20 ′, which extend along the arc guide cylinder 8 and have a curved blade profile in planes lying perpendicular to the axis of rotation 7.
  • the cohesion of the blade ring 19 is realized as follows.
  • the respective first blade ends are attached to a respective ring 21 which is concentric with the axis of rotation 7 and the respective second blade ends with a circular disk 22 which is also concentric with the axis of rotation 7.
  • a drive shaft 23 which is concentric with the axis of rotation 7 is rotatably mounted at its ends in each of the axle sections 16 and 17 and is also connected to the circular disk 22 in a rotationally fixed manner.
  • a second rotary drive member 25 which is illustrated in the example shown by a stub shaft of a preferably controllable motor 24 supported on the second side wall 4 and is connected to one end of the drive shaft 23 by means of a coupling 26, is provided.
  • a respective ring 21 is on a respective bearing ring 27 Supported cylinder housing.
  • a respective one of these bearing rings 27 engages around an inlet nozzle 28, which is fastened to a respective end face part 13 or 14 and projects into the interior of the cylinder housing and is concentric with the axis of rotation 7.
  • the air flow generated by rotation of the blade ring 19 passes through the openings 12 provided in the end face parts 13 and 14 into the interior of the cylinder jacket 15 and passes here through a suction area 29 which is surrounded by the blade ring 19 and extends in the longitudinal direction of the sheet guiding cylinder 8
  • the suction area 29 is divided by the circular disk 22 into two suction partial areas 29 ′, 29 ′′, of which a respective one is connected via an inlet nozzle 28 to the openings 12 of a respective end face part 13 or 14.
  • FIG. 3 an inventive design of the cylinder jacket 15 in the form of a skeleton formed using guide vanes is most clearly recognizable.
  • part of the skeleton of cross members 31 is shown, which connect the first end part 13 to the second end part 14, not shown in FIG. 3, a respective end part 13 or 14 essentially being in the form of a disk with a cylindrical jacket-shaped peripheral surface 32 has and the traverses 31 are distributed over the circumference of this disc.
  • a frame 33 is inserted in a respective intermediate space formed between adjacent cross members 31 and connected to a respective end face part 13, 14.
  • a respective frame 33 essentially has the shape of a thin-walled hollow cylinder segment provided with cutouts 34, which extends from the first end part 13 to the second end part 14 and is curved in such a way that a respective end piece 35 of the frame 33 associated with an end face part 13 or 14 conforms to the respective peripheral surface 32 of these end face parts 13 or 14.
  • the cutouts 34 extend in the longitudinal direction of the cylinder jacket 15 from a first to a second end piece 35, not shown in FIG.
  • a respective guide vane 30 In planes lying perpendicular to the axis of rotation 7, a respective guide vane 30 has a guide vane profile.
  • a respective guide vane profile extends from an imaginary first cylinder jacket surface located within the entirety of the hollow cylinder segments mentioned, which is symmetrical to the axis of rotation 7, to an imaginary second cylinder jacket surface located outside the entirety of these hollow cylinder segments, the imaginary second cylinder jacket surface being one represents the enveloping surface enclosing the cylinder jacket 15.
  • the guide vane profile and the position of the guide vanes 30 with respect to a respective frame 33 are selected such that an outer profile section of the guide vane profile located outside the entirety of the hollow cylinder segments opens essentially radially into the envelope surface mentioned. In the rest of the course of the guide vane profile, this is preferably curved such that an inner profile section of the guide vane profile facing away from the outer profile section tends to point against the direction of rotation of the blade ring 19.
  • the guide vanes 30 are provided with notches in the areas of the end pieces 35 of the frame 33 and the webs 36 and are placed on the end pieces 35 and the webs 36.
  • Mutual fixation of the guide vanes 30 on the one hand and the frame 33 on the other hand can take place by welding with a suitable choice of material.
  • existing framework parts are then formed from respective guide vanes 30 and a respective frame 33, which, as shown in the example according to FIG. 3, can be connected to this by a screw connection on the peripheral surface 32 of a respective end face part 13 or 14.

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)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Rotary Pumps (AREA)
  • Discharge By Other Means (AREA)
EP94120046A 1994-01-17 1994-12-17 Cylindres de transfert de feuilles Expired - Lifetime EP0663360B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944401114 DE4401114C1 (de) 1992-07-20 1994-01-17 Bogenführungszylinder
DE4401114 1994-01-17

Publications (3)

Publication Number Publication Date
EP0663360A2 true EP0663360A2 (fr) 1995-07-19
EP0663360A3 EP0663360A3 (fr) 1998-06-10
EP0663360B1 EP0663360B1 (fr) 2000-04-12

Family

ID=6508040

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94120046A Expired - Lifetime EP0663360B1 (fr) 1994-01-17 1994-12-17 Cylindres de transfert de feuilles

Country Status (6)

Country Link
US (1) US5626075A (fr)
EP (1) EP0663360B1 (fr)
JP (1) JP3013623U (fr)
AT (1) ATE191701T1 (fr)
CA (1) CA2139084A1 (fr)
DE (1) DE59409290D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5913268A (en) * 1998-02-17 1999-06-22 Xerox Corporation Pneumatic rollers and paper handling arrangements
ATE249384T1 (de) * 1998-12-03 2003-09-15 Heidelberger Druckmasch Ag Ausleger einer bogen verarbeitenden maschine
JP4638165B2 (ja) 2003-07-16 2011-02-23 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト 枚葉紙を処理する機械
JP4092302B2 (ja) * 2004-04-01 2008-05-28 ソニーケミカル＆インフォメーションデバイス株式会社 サクション装置
JP2006347702A (ja) * 2005-06-16 2006-12-28 Komori Corp シート状物案内装置
CN101850652B (zh) * 2009-03-19 2015-03-11 小森公司 薄片形件质量检查装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1191221A (en) * 1967-03-16 1970-05-13 Roland Offsetmaschf A Printing Press having a Rotary Drum for Delivering Freshly Printed Sheets without Set-off
DE3536536A1 (de) * 1984-11-27 1986-06-05 VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig Blaslufttrommel als uebergabetrommel und auslagetrommel an bogenverarbeitenden maschinen
DE4223839C1 (de) * 1992-07-20 1993-12-23 Heidelberger Druckmasch Ag Bogenführungszylinder einer Druckmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3602084A1 (de) * 1986-01-24 1987-07-30 Heidelberger Druckmasch Ag Bogenueberfuehrtrommel zwischen den druckwerken von rotationsdruckmaschinen
US5205217A (en) * 1990-12-31 1993-04-27 Howard W. DeMoore Vacuum transfer apparatus for rotary sheet-fed printing presses
DE4244499C2 (de) * 1992-12-30 1995-04-06 Heidelberger Druckmasch Ag Druckmaschine mit bogenführender Fläche

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1191221A (en) * 1967-03-16 1970-05-13 Roland Offsetmaschf A Printing Press having a Rotary Drum for Delivering Freshly Printed Sheets without Set-off
DE3536536A1 (de) * 1984-11-27 1986-06-05 VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig Blaslufttrommel als uebergabetrommel und auslagetrommel an bogenverarbeitenden maschinen
DE4223839C1 (de) * 1992-07-20 1993-12-23 Heidelberger Druckmasch Ag Bogenführungszylinder einer Druckmaschine

Also Published As

Publication number Publication date
EP0663360A3 (fr) 1998-06-10
DE59409290D1 (de) 2000-05-18
JP3013623U (ja) 1995-07-18
US5626075A (en) 1997-05-06
EP0663360B1 (fr) 2000-04-12
ATE191701T1 (de) 2000-04-15
CA2139084A1 (fr) 1995-07-18

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