EP0139357B1 - Kupplung für eine Zylinderschablone - Google Patents

Kupplung für eine Zylinderschablone Download PDF

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Publication number
EP0139357B1
EP0139357B1 EP84305013A EP84305013A EP0139357B1 EP 0139357 B1 EP0139357 B1 EP 0139357B1 EP 84305013 A EP84305013 A EP 84305013A EP 84305013 A EP84305013 A EP 84305013A EP 0139357 B1 EP0139357 B1 EP 0139357B1
Authority
EP
European Patent Office
Prior art keywords
screen
band
rings
deformable
annular groove
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
Application number
EP84305013A
Other languages
English (en)
French (fr)
Other versions
EP0139357A3 (en
EP0139357A2 (de
Inventor
Leon Broodryk
Rolf Seeliger
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.)
SCREEN LINK Pty Ltd
Original Assignee
SCREEN LINK Pty Ltd
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 SCREEN LINK Pty Ltd filed Critical SCREEN LINK Pty Ltd
Priority to AT84305013T priority Critical patent/ATE39434T1/de
Publication of EP0139357A2 publication Critical patent/EP0139357A2/de
Publication of EP0139357A3 publication Critical patent/EP0139357A3/en
Application granted granted Critical
Publication of EP0139357B1 publication Critical patent/EP0139357B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/34—Screens, Frames; Holders therefor
    • B41F15/38—Screens, Frames; Holders therefor curved

Definitions

  • This invention relates to a coupling device for releasably mounting on a rotary screen.
  • a coupling device for releasably mounting on a rotary screen having a zone for insertion in an end of a rotary screen including deformable means seating in an annular groove and means for deforming the deformable means to thereby frictionally engage the screen is described in US-A-4,044,669 (Luther).
  • inner peripheral flanges are formed at the ends of the screen for engaging a groove formed in a metal band apparently having overlapping ends.
  • the band is biased outwardly by an inflatable member or by means of wedges.
  • the flange is formed using an adhesive tape and it is difficult to accurately apply the tape to the screen.
  • US-A-3,640,218 describes a seal assembly for sealing a gravure roll.
  • the assembly has an end member, a pressure ring and a winding which is inflated to urge the pressure ring to deform a resilient seal ring positioned between the pressure ring and the end member.
  • a coupling device for releasably mounting on a rotary printing screen having a zone for insertion in an end of the rotary screen including deformable means seating in an annular groove and means for deforming the deformable means to thereby frictionally engage the screen, characterised in that the zone includes two spaced apart coaxial rings each having adjacent faces angled in opposite senses to form the annular groove therebetween, the deformable means comprises a deformable endless band having an inner face shaped complementally to the annular groove and seating in the annular groove and in that the means for deforming the deformable means comprises a nut which rides on a complementally screw threaded zone of the device for biasing at least one of the rings towards the other to deform the band.
  • One of the rings is preferably fixed on the device while the other is slidable.
  • the adjacent faces of the rings slope inwardly to form a vee shaped groove for receiving the complementally shaped inner face of the endless band.
  • the opposite face of the endless band is preferably planar for mating with the inner surface of the screen.
  • two devices are provided at the ends of a printing screen.
  • the ends of the devices opposite the zone for insertion into the screen includes formations for coupling with a rotatable member of a printing machine.
  • the endless band is preferably formed from a polymeric material and the outer diameter of the band in the undeformed state is slightly less than the inner diameter of the rotary screen which is formed from a fine nickel mesh.
  • a rotary printing screen 10 comprises a cylindrical screen 12 removably connected to two coupling devices 14.
  • the coupling device 14 has a tapered hollow body 16 formed with a fixed end ring 18 having an inwardly sloping face 20.
  • a movable ring 22 having a sloping face 24 is slidably movable on the device 14 to form a vee shaped annular groove of variable width. Seated in groove formed by the faces 20, 24 is an endless polymeric band 26 having a tapered inward projection 28.
  • the body 16 is screw threaded at 30 on to which rides an internally screw threaded ring 32.
  • the external diameter of the ring 32 is slightly less than the internal diameter of the screen 12.
  • the body 16 has four spaced apart projections 34 at the edge remote from the end ring 16 for coupling to a printing machine.
  • the screen 12 comprises an elongate cylindrical member manufactured from a fine nickel mesh.
  • two coupling devices 14 are located at the ends of the screen 12.
  • the ring 32 is screwed towards the end ring 18 thus sliding the ring 22 in that direction and consequently reducing the width of the groove formed by the faces 20, 24.
  • This motion causes the tapered projection 28 of the band 26 to be compressed and expand radially towards the circumference.
  • the correct amount of expansion may be obtained by a specially designed tool having an indicator for the present torque. This causes the device 14 to frictiohally engage the screen 12.
  • An advantage of the invention is that the device permits the use of a single screen on a plurality of different types of machines. Furthermore, the screens may be stored more economically due to the resiliency of the screens without the coupling devices. In addition the groove between the rings provides a positive locking arrangement for the endless band.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Soil Working Implements (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Claims (3)

1. Kupplungsanordnung (14) zum lösbaren Befestigen an einer Zylinderdruckschablone (12) mit einem zum Einführen in ein Ende der Zylinderdruckschablone bestimmten Abschnitt, der in einer ringförmigen Vertiefung liegende verformbare Mittel und eine Einrichtung hat, die die verformbaren Mittel vorformt und dadurch einen Friktionseingriff mit der Zylinderdruckschablone bewirkt, dadurch gekennzeichnet, daß der Abschnitt zwei zueinander beabstandete koaxiale Ringe (18, 22) aufweist, die jeweils einander benachbarte gegensinnig geneigte Flächen (20, 24) haben, zwischen denen die ringförmige Vertiefung gebildet wird, wobei die verformbaren Mittel ein verformbares Endlosband (26) mit einer nach innen weisenden Fläche umfassen, die komplementär zu der ringförmigen Vertiefung geformt ist und die in der ringförmigen Vertiefung liegt, und daß die Einrichtung zum Verformen der verformbaren Mittel eine Mutter (32) aufweist, die auf einen komplementären Schraubengewindeabschnitt (30) der Anordnung geführt ist, um mindestens einen Ring gegen den anderen vorzuspannen und damit das Band (26) zu verformen.
2. Kupplungsanordnung nach Anspruch 1, dadurch gekennzeichnet, daß ein Ring (18) festliegt und daß der andere Ring (22) verschiebbar ist, wobei die einander benachbarten Flächen der Ringe (18, 22) nach innen geneigt sind, wodurch eine V-förmige Vertiefung gebildet ist.
3. Kupplungsanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Endlosband (26) aus einem verformbaren Polymermaterial hergestellt ist, wobei der äußere Durchmesser des Endlosbandes (26) im unverformten Zustand geringfügig kleiner als der innere Durchmesser der Zylinderdruckschablone (12) ist.
EP84305013A 1983-07-27 1984-07-24 Kupplung für eine Zylinderschablone Expired EP0139357B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84305013T ATE39434T1 (de) 1983-07-27 1984-07-24 Kupplung fuer eine zylinderschablone.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA835491 1983-07-27
ZA835491 1983-07-27

Publications (3)

Publication Number Publication Date
EP0139357A2 EP0139357A2 (de) 1985-05-02
EP0139357A3 EP0139357A3 (en) 1985-11-06
EP0139357B1 true EP0139357B1 (de) 1988-12-28

Family

ID=25576830

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84305013A Expired EP0139357B1 (de) 1983-07-27 1984-07-24 Kupplung für eine Zylinderschablone

Country Status (7)

Country Link
EP (1) EP0139357B1 (de)
JP (1) JPS6058855A (de)
KR (1) KR850001086A (de)
AT (1) ATE39434T1 (de)
BR (1) BR8403736A (de)
DE (1) DE3475760D1 (de)
ES (1) ES534669A0 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3073610A (en) * 1961-10-19 1963-01-15 Lincoln Park Engineering Inc Expanding arbor
US3640218A (en) * 1970-06-25 1972-02-08 Thomas K Allison Seal assembly for sleeve-type gravure rolls
SE382415B (sv) * 1974-05-30 1976-02-02 Almedahls Ab Anordning for montering av tunna cylindriska objekt

Also Published As

Publication number Publication date
JPS6058855A (ja) 1985-04-05
EP0139357A3 (en) 1985-11-06
ATE39434T1 (de) 1989-01-15
KR850001086A (ko) 1985-03-14
EP0139357A2 (de) 1985-05-02
ES8505294A1 (es) 1985-05-16
ES534669A0 (es) 1985-05-16
DE3475760D1 (en) 1989-02-02
BR8403736A (pt) 1985-07-02

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