GB857874A - Improvements in or relating to stencilling machines - Google Patents
Improvements in or relating to stencilling machinesInfo
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/40—Inking units
- B41F15/42—Inking units comprising squeegees or doctors
- B41F15/423—Driving 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.
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)
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 |
-
1958
- 1958-02-11 GB GB436358A patent/GB857874A/en not_active Expired
Cited By (4)
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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