EP0139357A2 - Découplement pour un pochoir cylindrique - Google Patents

Découplement pour un pochoir cylindrique Download PDF

Info

Publication number
EP0139357A2
EP0139357A2 EP84305013A EP84305013A EP0139357A2 EP 0139357 A2 EP0139357 A2 EP 0139357A2 EP 84305013 A EP84305013 A EP 84305013A EP 84305013 A EP84305013 A EP 84305013A EP 0139357 A2 EP0139357 A2 EP 0139357A2
Authority
EP
European Patent Office
Prior art keywords
rings
screen
coupling device
ring
band
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
EP84305013A
Other languages
German (de)
English (en)
Other versions
EP0139357B1 (fr
EP0139357A3 (en
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/fr
Publication of EP0139357A3 publication Critical patent/EP0139357A3/en
Application granted granted Critical
Publication of EP0139357B1 publication Critical patent/EP0139357B1/fr
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 a rotary screen and in particular to a device that is removably engageable with the screen.
  • a coupling device for releasably mounting on a rotary screen, having a zone including two spaced apart rings for insertion in an end of the screen, a deformable endless band having an inner face for seating in an annular groove formed by the rings and means for biasing at least one of the rings towards the other for deforming the band and frictionally engaging the screen.
  • the adjacent faces of the rings are angled in opposite senses to form a groove and the inner face of the endless band is complementally shaped.
  • the means for biasing the rings preferably comprises a nut which rides on a screw threaded zone formed on the device.
  • One of the rings is preferably fixed on the device while the other is slidable.
  • the adjacent faces of the rings are profiled to slope inwardly and provide a substantially vee shaped groove for receiving a 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 has an outside diameter 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 frictionally 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)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Soil Working Implements (AREA)
EP84305013A 1983-07-27 1984-07-24 Découplement pour un pochoir cylindrique Expired EP0139357B1 (fr)

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 true EP0139357A2 (fr) 1985-05-02
EP0139357A3 EP0139357A3 (en) 1985-11-06
EP0139357B1 EP0139357B1 (fr) 1988-12-28

Family

ID=25576830

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84305013A Expired EP0139357B1 (fr) 1983-07-27 1984-07-24 Découplement pour un pochoir cylindrique

Country Status (7)

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

Citations (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
US4044669A (en) * 1974-05-30 1977-08-30 Almedahls Aktiebolag Rotary screen mounting device

Patent Citations (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
US4044669A (en) * 1974-05-30 1977-08-30 Almedahls Aktiebolag Rotary screen mounting device

Also Published As

Publication number Publication date
BR8403736A (pt) 1985-07-02
ES8505294A1 (es) 1985-05-16
ES534669A0 (es) 1985-05-16
DE3475760D1 (en) 1989-02-02
JPS6058855A (ja) 1985-04-05
KR850001086A (ko) 1985-03-14
EP0139357B1 (fr) 1988-12-28
ATE39434T1 (de) 1989-01-15
EP0139357A3 (en) 1985-11-06

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