GB857874A - Improvements in or relating to stencilling machines - Google Patents

Improvements in or relating to stencilling machines

Info

Publication number
GB857874A
GB857874A GB436358A GB436358A GB857874A GB 857874 A GB857874 A GB 857874A GB 436358 A GB436358 A GB 436358A GB 436358 A GB436358 A GB 436358A GB 857874 A GB857874 A GB 857874A
Authority
GB
United Kingdom
Prior art keywords
squeegee
pivoted
stroke
plate
screen
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
GB436358A
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.)
JAMES ADDIS INNES
Original Assignee
JAMES ADDIS INNES
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 JAMES ADDIS INNES filed Critical JAMES ADDIS INNES
Priority to GB436358A priority Critical patent/GB857874A/en
Publication of GB857874A publication Critical patent/GB857874A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F15/00Screen printers
    • B41F15/14Details
    • B41F15/40Inking units
    • B41F15/42Inking units comprising squeegees or doctors
    • B41F15/423Driving means for reciprocating squeegees

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
  • Manufacturing Of Printed Wiring (AREA)

Abstract

857,874. Stencilling apparatus. INNES, J. A. Feb. 6, 1959 [Feb. 11, 1958], No. 4363/58. Class 100(2) An end support for the squeegee of a power-operated screen printing machine comprises a slide member and a second member pivoted thereto and carrying a squeegee carrier bar, the axis of the squeegee and the pivoted axis being transverse to the direction of sliding, the second member engaging, at a predetermined stage in the stroke of the squeegee, a portion having relative motion with respect to the end support when the machine is operating, so that said second member is pivoted in a direction opposed by resilient means, whereupon the members are latched together, and the latching means engaging a further such relatively moving portion at another stage in the stroke of the squeegee, to unlatch the members. The squeegee 26, Figs. 1 and 4, is mounted adjustably by bolts 29 on a carrier bar 27 attached at each end to a lug 14 on a plate 3 pivoted at 4 to a block 1 slidable on a rail 2 carried on the pivoted screen frame. When the squeegee, out of contact with the screen, nears the end of its liftward return stroke, a ball bearing assembly 16 is engaged by a cam face 21 of an arm 18 pivoted at 20 to a bracket 19 on the screen frame, and when the squeegee begins its printing stroke, the cam face 21 swings the plate 3 downwards against the force of a compression spring 5, bringing the squeegee into contact with the screen, the plate 3 being latched in the operative position by a catch 11 pivoted at 10 to the block 1 and urged clockwise by a helical spring 12 engaging over a catch block 13' on the plate 3. At the end of the printing stroke, a bracket 22 on the screen frame engages the catch 11 to release it and the plate 3 moves upwards, while a rotating driven member engages a catch on the frame to release the latter, which is raised dear of the table by a counter-weight. On the return stroke, the squeegee in moving increases the moment of the frame about its fulcrum in the closing direction, until the frame moves down against the counterweight, and the process is repeated. The squeegee is reciprocated by a crank and link mechanism, attached to one of the end blocks 1 and is driven in its two directions by two separate electric motors at different speeds, the motors being alternately energised by limit switches engaged by a part of the squeegee driving-mechanism. The switches are arranged so that both motors are idle when the screen frame has not quite reached its lower position, to allow manual adjustment of the work.
GB436358A 1958-02-11 1958-02-11 Improvements in or relating to stencilling machines Expired GB857874A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB436358A GB857874A (en) 1958-02-11 1958-02-11 Improvements in or relating to stencilling machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB436358A GB857874A (en) 1958-02-11 1958-02-11 Improvements in or relating to stencilling machines

Publications (1)

Publication Number Publication Date
GB857874A true GB857874A (en) 1961-01-04

Family

ID=9775764

Family Applications (1)

Application Number Title Priority Date Filing Date
GB436358A Expired GB857874A (en) 1958-02-11 1958-02-11 Improvements in or relating to stencilling machines

Country Status (1)

Country Link
GB (1) GB857874A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230448A1 (en) * 1991-09-13 1993-03-18 Riso Kagaku Corp Squeegee device for feeding the printing ink for a stencil printing machine
CN114161813A (en) * 2021-11-16 2022-03-11 昆明理工大学 Under-actuated tension-controllable net stretching clamp and using method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230448A1 (en) * 1991-09-13 1993-03-18 Riso Kagaku Corp Squeegee device for feeding the printing ink for a stencil printing machine
US5357856A (en) * 1991-09-13 1994-10-25 Riso Kagaku Corporation Squeege device for supplying ink in a stencil printing device
CN114161813A (en) * 2021-11-16 2022-03-11 昆明理工大学 Under-actuated tension-controllable net stretching clamp and using method thereof
CN114161813B (en) * 2021-11-16 2023-08-25 昆明理工大学 Under-driven tension-controllable net stretching clamp and application method thereof

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