EP0894623B1 - Groupe imprimant pour une machine rotative - Google Patents

Groupe imprimant pour une machine rotative Download PDF

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Publication number
EP0894623B1
EP0894623B1 EP98113141A EP98113141A EP0894623B1 EP 0894623 B1 EP0894623 B1 EP 0894623B1 EP 98113141 A EP98113141 A EP 98113141A EP 98113141 A EP98113141 A EP 98113141A EP 0894623 B1 EP0894623 B1 EP 0894623B1
Authority
EP
European Patent Office
Prior art keywords
printing unit
unit according
shaft
blanket cylinder
end cap
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
EP98113141A
Other languages
German (de)
English (en)
Other versions
EP0894623A2 (fr
EP0894623A3 (fr
Inventor
Wilfred Robert Gelinas
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
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0894623A2 publication Critical patent/EP0894623A2/fr
Publication of EP0894623A3 publication Critical patent/EP0894623A3/fr
Application granted granted Critical
Publication of EP0894623B1 publication Critical patent/EP0894623B1/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
    • B41F30/00—Devices for attaching coverings or make-ready devices; Guiding devices for coverings
    • B41F30/04—Devices for attaching coverings or make-ready devices; Guiding devices for coverings attaching to transfer cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/008—Mechanical features of drives, e.g. gears, clutches
    • 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
    • B41F13/193—Transfer cylinders; Offset cylinders
    • 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
    • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
    • B41P2213/80—Means enabling or facilitating exchange of cylinders
    • B41P2213/804—Means enabling or facilitating exchange of cylinders radially
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49544—Roller making
    • Y10T29/49547—Assembling preformed components
    • Y10T29/49558—Includes securing removable cover on roller

Definitions

  • the invention relates to a printing unit for a web-fed rotary printing press according to the Preamble of claim 1.
  • the aim is to reduce the downtimes of the press shorten that arise from the fact that the rubber blankets or the blanket cylinder
  • the machine must be changed because there is wear during printing of the blankets, which leads to a corresponding deterioration in the quality of the Print image can lead.
  • objects or particles that are in the pressure column z. B. between the rubber cylinder and the plate cylinder or between two assigned blanket cylinders of a rubber - rubber printing unit arrive, also result in damage to the rubber blankets.
  • EP 0 225 509 A2 describes a web-fed rotary printing press with a printing unit, which has a blanket cylinder, one from the printing unit housing Removable cylinder jacket body on which a thin-walled sleeve-shaped printing form or a rubber blanket sleeve are axially slidable.
  • the font gives no indication of the cylinder jacket in lightweight construction with axial bores and to be provided with end caps.
  • EP 0 069 388 A1 describes a bearing for printing unit cylinders in which a Printing unit cylinder is provided with inner cones at the end and between two in the housing the press rotatably mounted shafts with complementary conical Outer crown is clamped. There is an adjustment device on the outside of the housing arranged that an axial displacement of the cylinder for adjusting the side register enables. The writing does not indicate that the cylinder has end caps provided and to arrange a plurality of axial bores in this.
  • US 2,949,852 describes a light weight, non-driven pressure roller for a printing press, which has a tubular body made of extruded aluminum having. End caps are formed at the ends of the tubular body conical openings for receiving conical shaft ends exhibit. The shaft is firmly connected to the pressure roller, which rotates in the Side walls of the housing of the printing press is mounted.
  • DE 44 42 575 C1 discloses a device for coupling a removable one massive cylinder of a printing press to a drive gear known in which the Drive gear remains in the press body after the cylinder is out was taken from this.
  • a shaft running in the axial direction with the help of a with a the pneumatic cylinder connected to the shaft ends is movable, extends through the Center of the drive gear around the solid cylinder with the drive gear to couple in terms of drive.
  • the other end of the wave acts on you with one Toothed collar, which is drivingly connected to the drive gear which in turn has a second collar with a ring gear Is engagement, which is formed at the adjacent end portion of the solid cylinder.
  • the object of the invention is to achieve a printing unit for To create web rotary printing press, which also a high print quality offers high production speeds, which is simple and at which the downtimes associated with changing the rubber blankets Printing machine are shortened.
  • a printing unit for one Web-fed rotary printing press has a housing with a first side wall in which a Drive mechanism is arranged and further has a second side wall, in which is arranged a locking mechanism.
  • a blanket cylinder includes one A plurality of bores extending through it in the axial direction and is removably disposed between the first and second side walls of the housing.
  • an endless sleeve-shaped one Rubber blanket attached which extends around the circumferential surface of the cylinder.
  • An end cap attached to a first end portion of the blanket cylinder is drivably coupled to a drive mechanism, and a second end cap optionally with the locking mechanism in the second side wall of the housing detachable.
  • the holes in the Blanket cylinders have a substantially trapezoidal cross section.
  • the Side walls of each hole extend essentially radially and can have a thickness of approximately 1.8 cm.
  • the is tubular Blanket cylinder body made of extruded aluminum and has a ratio from inner diameter to outer diameter in the range of 1: 2 to 1: 3.
  • the drive mechanism To drive the blanket cylinder, a drive shaft that rotates in the first Side wall of the housing is mounted and which is from one at the first end of the shaft formed drive gear extends to a second end, which is driving is connected to the first end cap.
  • the connection between the first end cap and the drive shaft is preferably a tongue and groove connection.
  • the Locking mechanism for engagement with the second end cap of the Blanket cylinder a shaft that is rotatable and axial with respect to the second side wall is slidably mounted in the second side wall. Extends in a first position an end portion of the shaft into a central axial opening that is in the second end cap is formed to rotatably support the blanket cylinder. In a second position Completely pull the shaft out of the end cap so that the blanket cylinder is out can be removed from the printing unit.
  • the locking mechanism can furthermore preferably a force-transmitting, rotatable with the displaceable shaft connected element and have a force-exerting element which on the force transmitting element acts to the shaft between the first and the second Move position back and forth.
  • the force-exerting element be designed as a lever, which acts on the force-transmitting element, the Lever is pivotally mounted on a projection of the second side wall of the housing.
  • an annular section with an enlarged diameter on the slidable shaft can be provided to the movement of the associated end portion limit the same in the second end cap.
  • a web-fed rotary printing press 1 has one Large number of printing units 2, with a housing 12 in which at least one Blanket cylinder 4 is rotatably mounted.
  • Each blanket cylinder 4 includes one tubular blanket cylinder body 6 with an on an outer surface of the Blanket cylinder body 6 attached endless blanket 14 which is rotatable in the two side walls 8 and 10 of the housing 12 is mounted.
  • the rubber blanket 14 will preferably firmly, for example by glue or vulcanization, on the outer Surface of the blanket cylinder body 6 attached.
  • the endless Blanket 14 on the blanket cylinder body 6 by expanding a smaller one Diameter than that of the blanket cylinder body 6 having sleeve-shaped Blanket 14, for example by compressed air, and movements of the stretched Blanket 14 are applied to the blanket cylinder body 6. After this Switching off the compressed air, the rubber blanket 14 contracts and jams the tubular body 6 firmly.
  • the rubber blanket 14 can be made of rubber in a known manner or plastic material and can be made by an inner layer of aluminum or other metal.
  • the blanket cylinder body 6 can be made of extruded aluminum be made with axially extending holes 16, which preferably extend over the extend the entire length of the blanket cylinder body 6.
  • the holes 16 have preferably a trapezoidal cross-section, the holes 16 delimiting side walls preferably substantially radially from the axis of rotation of the blanket cylinder body 6 extend away.
  • the holes 16 may be one have circular or elliptical cross-section.
  • the holes 16 are preferably symmetrical about the axis of rotation of the Blanket cylinder body 6 preferably arranged at the same distance from each other be, the holes 16 may be of such a size that each hole 16 one Covers angle ⁇ of approximately 20 °.
  • the blanket cylinder body 6 there are approximately 18 holes 16 that over the circumference of the blanket cylinder body 6 are arranged. Furthermore, one Blanket cylinder 4 with a diameter of approximately 65 cm the side walls 20th between adjacent holes 16, e.g. B. between 1.6 and 1.95 cm, preferably 1.8 up to 1.876 cm, strong; or the thickness of the walls 20 is preferably in the range between 2.5% and 3% of the diameter D of the blanket cylinder 4. As further from FIG. 4 can be seen, the ratio of the inner diameter is R1 and the outer Diameter R2 of the blanket cylinder body 6 in a preferred manner approximately 1: 2.5, can also be in the range of 1: 2 and 1: 3.
  • first and second end caps 22 and 24 are shown the corresponding first and second end portions 26, 28 of the Blanket cylinder body 6 arranged. As is illustrated in FIG. 5, one intervenes Engagement portion 30 of the first end cap 22 in an associated engagement portion 32 a first end 34 of the drive shaft 36.
  • the drive shaft 36 is rotatable in the first side wall 8 of the housing 12 is mounted and is preferably by a Drive gear 38 driven, which at a second end 40 of the drive shaft 36 is attached outside the housing 12.
  • Section 30 and section 32 can preferably have one or more grooves 73 and associated springs 77, one Tongue and groove connection for the transmission of torque from the drive shaft 36 to the form first end cap 22 so that when the drive shaft 36 rotates Cylinder 4 also rotates. It is understood that despite the formation of the springs 77 on Section 32 as extending springs and the grooves 73 on section 30 as Wells, this arrangement reversed without changing the coupling function can be.
  • the position and orientation of the grooves 73 and the associated springs 77, which in the Sections 30 and 32 are preferably formed so that there is only one possible one Position for correctly engaging the end cap 22 of the blanket cylinder 4 with the Drive shaft 36 there.
  • the drive shaft 36 together with the drive gear 38 and the engaging portion 32 form a drive mechanism 42 for driving the Blanket cylinder 4.
  • the drive shaft 36 preferably rotatable within the first side wall 8 of the housing 12 in the manner attached that the drive shaft 36-axially fixed and relative to the first side wall 8th is immovably arranged when an axial load, for. B. by the Blanket cylinder 4 is exerted on the engaging portion 32.
  • a collar 44 may be formed on the first end 34 of the drive shaft 36 in order for a precise Alignment of the drive shaft 36 and the blanket cylinder 4 to provide.
  • an insert 75 made of solid material, preferably steel, also on the first end cap 22 may be attached.
  • the insert 75 is preferably inside a circular recess 46 of the end cap 22 and includes a hole for receiving an associated spring 77, which on the collar 44 of the drive shaft 36 can be formed.
  • the printing unit 2 comprises one Locking mechanism 50, which in the second side wall 10 of the housing 12th is arranged, ensures a precise rotary mounting of the blanket cylinder 4 and also allows a simple and quick replacement of the blanket cylinder 4.
  • the Locking mechanism 50 includes a shaft 52 that is axially within a sleeve 54 is movable back and forth relative to the second side wall 10.
  • the sleeve 54 is in the second side wall 10 of the housing 12 rotatably held in bearings 56.
  • the shaft 52 includes an end portion 58 which, when the shaft is in a first position as in FIG 6 is shown, in an associated central hole 60, which is in the second End cap 24 is formed is added.
  • the shaft 52 may preferably be one annular portion 62 with a larger diameter than that of the central axial Own holes 60.
  • an annular elastic member 64 may be interposed between the annular portion 62 and the outer surface of the second end cap 24 be provided which has a resilient axial force from the shaft 52 to the second End cap 42 transmits when shaft 52 is in the first position.
  • the annular elastic member 64 may e.g. B. be a rubber expansion ring that allows different cylinder body 6, in the printing unit 2 without a corresponding adjustment of the locking mechanism 50 to use, even if the cylinder body 6 in the Vary length slightly.
  • an insert 76 made of solid material, e.g. B. steel, may be arranged in the second end cap 24 in such a way that it is the End portion 58 of the shaft 52 surrounds. The insert 76 is preferably annular and so great that it can accommodate the end portion 58 of the shaft 52 slidably.
  • the second end portion 66 of the shaft 52 is rotatable with a force-transmitting element 68, which has an axial force on the shaft 52 to move them from the first position shown in FIG. 6 to one shown in FIG. 3 second position, in which the shaft 52 completely from the blanket cylinder 4th is withdrawn so that the blanket cylinder 4 is freely removed from the housing 12 can be.
  • a force element 70 e.g. B. in the form of a lever 72, the is rotatably attached to a projection 74 formed on the side wall 10, is with the force-transmitting element 68 connected by means of a shaft 78, so that when the Lever 72 about a pivot point 79 counterclockwise, as shown in Fig.
  • the force-exerting element 70 can alternatively also be a Pneumatic cylinder, an electrically or manually working spindle drive or another be known device which is connected to the force-transmitting element 68 and which ensures a precise rotary bearing of the shaft 52 and thus of the cylinder 4; and correspondingly ensures easy removal of the cylinder.

Claims (18)

  1. Groupe imprimant pour une presse à Imprimer rotative à bobine (1) comportant :
    une carrosserie (12) présentant une première et une seconde parois latérales (8, 10), avec un mécanisme d'entraínement (42) disposé dans la première paroi latérale (8) de la carrosserie (12),
    un mécanisme de verrouillage (50) prévu dans la seconde paroi latérale (10),
    ainsi qu'un cylindre de blanchet (4) qui porte un blanchet sans fin (14) fixé sur la surface périphérique du cylindre de blanchet (4),
    caractérisé par le fait que le cylindre de blanchet (4) présente une pluralité de trous (16) qui y sont formés dans le sens axial et que sont prévus un premier capuchon d'extrémité (22) lié à une première portion d'extrémité (58) du cylindre de blanchet (4) et pouvant se coupler, au point de vue entraínement, avec le mécanisme d'entrainement (42), ainsi qu'un second capuchon d'extrémité (24) lié à une seconde portion d'extrémité (26, 28) du cylindre de blanchet (4) et pouvant se relier au choix avec le mécanisme de verrouillage (50).
  2. Groupe imprimant (2) selon la revendication 1, caractérisé par le fait que les trous axiaux (16) présentent une section en forme de trapèze.
  3. Groupe imprimant selon la revendication 1 ou 2, caractérisé par le fait que les trous (16) sont essentiellement disposés à égale distance l'un de l'autre autour de l'axe de rotation du cylindre (4).
  4. Groupe imprimant selon l'une des revendications précédentes, caractérisé par le fait que les parois (20) formée entre deux trous (16) qui se jouxtent s'étendent essentiellement radialement depuis l'axe de rotation du cylindre (4).
  5. Groupe imprimant selon la revendication 4, caractérisé par le fait qu'au moins l'une des parois (20) présente une épaisseur valant entre 1,6 et 1,9cm.
  6. Groupe imprimant selon la revendication 5, caractérisé par le fait qu'au moins une paroi (20) a une épaisseur d'environ 1,8 cm.
  7. Groupe imprimant selon la revendication 6, caractérisé par le fait que le cylindre de blanchet (4) est formé d'aluminium extrudé.
  8. Groupe imprimant selon l'une des revendications précédentes, caractérisé par le fait que le rapport entre le rayon intérieur (R1 ) du cylindre de blanchet (4) et le rayon extérieur (R2) du cylindre de blanchet (4) se situe sur une plage valant entre 1:2 et 1:3.
  9. Groupe imprimant selon la revendication 8, caractérisé par le fait que le rapport est environ 1:2,5.
  10. Groupe imprimant selon l'une des revendications précédentes, caractérisé par le fait que le mécanisme d'entraínement (42) présente un arbre d'entraínement (36) prévu dans la première paroi latérale (8) de la carrosserie (12) avec une première portion d'extrémité (40) et un pignon d'entraínement (38) qui y est fixé et peut se relier, au point de vue entraínement, avec le premier capuchon d'extrémité (22).
  11. Groupe imprimant selon la revendication 10, caractérisé par le fait que l'arbre d'entraínement (36) est couplé au premier capuchon d'extrémité (22) par une liaison à rainure et languette.
  12. Groupe imprimant selon la revendication 10, caractérisé par le fait que la première extrémité (34) de l'arbre d'entraínement (30) présente un collet (44) qui, lorsque l'arbre d'entraínement (36) est couplé avec le premier capuchon d'extrémité (22), est reçu dans un évidement formé dans le premier capuchon d'extrémité (22).
  13. Groupe imprimant selon l'une des revendications précédentes, caractérisé par le fait que le mécanisme de verrouillage (50) présente un arbre (52) qui est porté, avec liberté de rotation relative, dans la seconde paroi latérale (10) et peut coulisser, par rapport à la seconde paroi latérale (10), selon la direction axiale, pour passer, d'une première position de verrouillage dans laquelle une portion d'extrémité (58) de l'arbre (52) s'étend dans un perçage axial central (60) du second capuchon d'extrémité (24) et dans laquelle le cylindre de blanchet (4) est porté avec liberté de rotation, dans une seconde position dans laquelle l'arbre (52) est extrait hors du perçage central (60) et dans laquelle le cylindre de blanchet (4) peut être sorti hors de la carrosserie (12) du groupe imprimant (2).
  14. Groupe imprimant selon la revendication 13, caractérisé par le fait que le mécanisme de verrouillage (50) comporte un élément (68) de transition de la force qui est disposé, avec liberté de rotation relative, entre l'arbre (52) et un élément (70) sur lequel on exerce la force, pour déplacer l'arbre (52) entre la première et la seconde positions et vice-versa.
  15. Groupe imprimant selon la revendication 13 ou 14, caractérisé par le fait que l'élément (70) sur lequel on exerce la force comporte un levier (72).
  16. Groupe imprimant selon l'une des revendications 11 à 15, caractérisé par le fait que l'arbre (52) présente une portion (62) de plus grand diamètre qui limite dans la première position le déplacement axial de la portion d'extrémité (58) de l'arbre (52).
  17. Groupe Imprimant selon la revendication 16, caractérisé par le fait qu'est prévu un élément élastique annulaire (64) qui, dans la première position, est disposé entre la portion d'extrémité (58) de l'arbre (52) et le second capuchon d'extrémité (24).
  18. Groupe imprimant selon la revendication 17, caractérisé par le fait que l'élément élastique (76) est formé de caoutchouc.
EP98113141A 1997-08-01 1998-07-15 Groupe imprimant pour une machine rotative Expired - Lifetime EP0894623B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/905,111 US5894796A (en) 1997-08-01 1997-08-01 Printing unit for a web-fed rotary printing press
US905111 1997-08-01

Publications (3)

Publication Number Publication Date
EP0894623A2 EP0894623A2 (fr) 1999-02-03
EP0894623A3 EP0894623A3 (fr) 1999-08-11
EP0894623B1 true EP0894623B1 (fr) 2001-11-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98113141A Expired - Lifetime EP0894623B1 (fr) 1997-08-01 1998-07-15 Groupe imprimant pour une machine rotative

Country Status (3)

Country Link
US (1) US5894796A (fr)
EP (1) EP0894623B1 (fr)
DE (2) DE59802033D1 (fr)

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CN101952121B (zh) * 2008-02-28 2013-08-28 环宇制罐株式会社 印版滚筒、印刷装置、以及印版滚筒的制造方法
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CN104175725A (zh) * 2014-08-09 2014-12-03 常州市武进华瑞电子有限公司 可伸缩的喷墨绘图仪收纸装置
CN104985917A (zh) * 2015-07-31 2015-10-21 苏州市永津彩印包装有限公司 一种印刷设备中的安装机构
CN106195581A (zh) * 2016-07-28 2016-12-07 苏州优银机械有限公司 一种悬臂连接调节组件
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Also Published As

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DE19831694A1 (de) 1999-02-04
EP0894623A2 (fr) 1999-02-03
US5894796A (en) 1999-04-20
DE59802033D1 (de) 2001-12-13
EP0894623A3 (fr) 1999-08-11

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