US3886861A - Squeegee mount to independently adjust squeegee angle and pressure - Google Patents

Squeegee mount to independently adjust squeegee angle and pressure Download PDF

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Publication number
US3886861A
US3886861A US230330A US23033072A US3886861A US 3886861 A US3886861 A US 3886861A US 230330 A US230330 A US 230330A US 23033072 A US23033072 A US 23033072A US 3886861 A US3886861 A US 3886861A
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US
United States
Prior art keywords
squeegee
stencil
supporting means
frame
axis
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
US230330A
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English (en)
Inventor
Lodewijk Anselrode
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.)
Stork Amsterdam NV
Original Assignee
Stork Amsterdam NV
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 Stork Amsterdam NV filed Critical Stork Amsterdam NV
Application granted granted Critical
Publication of US3886861A publication Critical patent/US3886861A/en
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
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/44—Squeegees or doctors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L13/00—Stencilling apparatus for office or other commercial use
    • B41L13/04—Stencilling apparatus for office or other commercial use with curved or rotary stencil carriers

Definitions

  • My invention relates to a screen printing machine comprising a frame and movably provided therein at least one stencil with an adjustable squeegee, operative in a path along which the material to be printed is advanced while each squeegee consists of a strip with an edge which can be brought into contact with the associated stencil, and the strip is secured to supporting means which at its two ends is supported in the frame by an adjustable suspension device.
  • the printing paste is pressed, by means of the squeegee, through the perforations of the stencil.
  • the quantity of paste pressed through the perforations is affected by the angle of the nip between the strip of the squeegee and the stencil inner surface, and by the force by which the edge of the strip presses against the stencil.
  • the nip angle which can range from about to 90 gives rise to shearing forces because of the relative movement of squeegee strip and stencil during printing.
  • the width and thickness of the squeegee strip are so determined that the required quantity of printing paste is brought on and/or into the material to be printed.
  • the suspension device allows a rotation of the squeegee around a pivot axis situated on an extension of a line passing along the edge of the squeegee strip contacting the screen. Due to this feature the axis of rotation of the squeegee strip will coincide, in the operative position of the squeegee with the line of contact between stencil and squeegee strip.
  • nip angle and compressive force can be effected independently of one an other.
  • each suspension device For making the squeegee inoperative (e.g. when the printing process is interrupted) and for adjusting the compressive force each suspension device consists of a first lever the axis of rotation of which is ad justably supported on the frame of the machine.
  • the adjustable support of the axis of rotation of the first lever is preferably in a second lever which allows an adjustment of the squeegee in a vertical direction perpendicular to the printing path.
  • FIG. I is a side elevational view of that portion of the printing machine to which the present invention relates and showing the adjusting structure
  • FIG. 2 is an exploded view in perspective of the adjusting structure of FIG. I.
  • FIGS. 1 and 2 there is shown a part of the frame 1 of the machine and a stencil 2 rotatably mounted in the frame.
  • an adjustable squeegee 3 is provided in each stencil.
  • This stencil is operative in a path A along which the material to be printed (e.g. a web of fabric or loose sheets of paper) is advanced.
  • Each squeegee comprises a supporting member 4 with a fitting 5 for a squeegee strip 6 proper.
  • the member 4 is constructed in the usual way as a tube through which the printing paste is fed to the interior of the stencil 2.
  • the supporting member 4 is hung at its two ends protruding from the stencil on adjustable suspension members 7 consisting of a lever 8, supported in the frame I.
  • the lever 8 in this case constructed as a bell crank lever, has a pivotal axis 9 situated on the extension of a line along the edge 10 of the squeegee strip 6.
  • the pivotal axis 9 of the first lever 8 is supported in a second lever 11 allowing an adjustment in a vertical direction perpendicular to the printing path A.
  • the second lever 11 has a pivotal axis 12 on the frame I of the machine.
  • the one end of the lever 11 carries the pivotal axis 9 of the first lever 8, while the other end via an operating rod 13 is connected with a fluid operating member 14, e.g. consisting of the usual pneumatic jack.
  • the one end 15 of the first lever 8 carries the supporting member 4 of the squeegee 3, while the other end 16 cooperates with both an adjusting mechanism 17 and a graduated scale 18.
  • the mechanism 17 comprises a nut 19 connected with the end I6 of the bell crank lever 8 and cooperating with a threaded rod 20 which via an universal joint 21 and a bevel gearing 22 is connected with a hand wheel 23.
  • a hand wheel 23 By turning this hand wheel 23 the rod 20 is rotated to move the nut 19 along the threaded rod 20 to rotate the lever 8 around its pivotal axis 9 which coincides with the line 10 of contact.
  • the pivoting lever 8 thus moves the squeegee support 4 downwardly but at the same time imparts a sideward or lateral movement to the support.
  • the downward and lateral components of movement produce a pivoting movement of the entire support 3-6 about the pivot axis 9.
  • the nip angle a between the squeegee strip 6 and the inner surface of the stencil 2 is adjusted without any change in the compressive force of the squeegee strip. It is thus possible to adjust to any nip angle required or desired for a particular printing effect and to subsequently determine independently of the nip angle the compressive force of the squeegee strip via the lever 11, rod 13 and the operating member 14.
  • the invention renders it possible to adjust independently of each other the nip angle and the force by which the squeegee presses against the stencil, which allows more freedom in realizing exactly any desired printing effect.
  • the invention can be applied both with rigid and rather soft squeegee strips such as applied in the screen printing technique.
  • a squeegee supporting means comprising a tubular member positioned within a rotatable cylindrical stencil, said tubular member having both its ends protruding outwardly beyond both edges of the stencil, a squeegee secured to said supporting means and having an elongated edge for contacting the inner surface of said rotatable cylindrical stencil, and adjustable suspension means mounted on said frame connected to both ends of said squeegee supporting means and comprising at least one mounting member pivotable about an axis coextensive with said edge of the squeegee for tilting said squeegee and supporting means about said axis to vary the angle of nip between the squeegee and the screen without changing the compressive force of the squeegee.
  • said mounting member comprises a first lever pivotally mounted on a first pivot axis coincident with the said axis about which said squeegee is tilted, and means on said frame for adjustably supporting said first pivot axis.
  • said adjustable suspension means comprises a second lever pivotally mounted on said frame to adjust said first pivot axis substantially perpendicular to a plane tangential to the stencil in the vicinity of the contact of the stencil by the squeegee.
  • said first lever comprises a bell crank having first and second ends, said supporting means being connected to said first end, and an adjustable mechanism movable along a scale connected to the second end of said bell crank.
  • said second lever comprises first and second ends, said first pivot axis being on the first end of said second lever, and fluid operating means connected to the second end of said second lever.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
US230330A 1971-03-16 1972-02-29 Squeegee mount to independently adjust squeegee angle and pressure Expired - Lifetime US3886861A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7103481A NL7103481A (es) 1971-03-16 1971-03-16

Publications (1)

Publication Number Publication Date
US3886861A true US3886861A (en) 1975-06-03

Family

ID=19812697

Family Applications (1)

Application Number Title Priority Date Filing Date
US230330A Expired - Lifetime US3886861A (en) 1971-03-16 1972-02-29 Squeegee mount to independently adjust squeegee angle and pressure

Country Status (9)

Country Link
US (1) US3886861A (es)
AT (1) AT319177B (es)
CH (1) CH533011A (es)
DE (1) DE2209630A1 (es)
ES (1) ES400738A1 (es)
FR (1) FR2129727A5 (es)
GB (1) GB1324969A (es)
IT (1) IT950077B (es)
NL (1) NL7103481A (es)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036129A (en) * 1974-10-15 1977-07-19 Johannes Zimmer Squeegee device
US4069756A (en) * 1973-04-05 1978-01-24 Stork Amsterdam B.V. Squeegee device
US4077320A (en) * 1975-08-12 1978-03-07 Societe Alsacienne De Constructions Mecaniques De Mulhouse Suspension device for squeegee-supporting tubes in rotary screen printer
US4103614A (en) * 1975-09-29 1978-08-01 Mathias Mitter Screen printing machine with reciprocating endless printing screen
US4103615A (en) * 1976-01-14 1978-08-01 Sir James Farmer Norton & Co., Limited Vertical rotary screen printing machine and ink supply therefore
US4103613A (en) * 1975-09-29 1978-08-01 Mathias Mitter Screen printing machine with ink supply reciprocation
WO1985003672A1 (en) * 1984-02-21 1985-08-29 Lockwood Technical, Inc. Rotary screen printing apparatus
US4905591A (en) * 1987-10-09 1990-03-06 Stork Brabant B.V. Multicolor rotary screen printing machine with an improved squeegee suspension construction
US5247882A (en) * 1991-05-10 1993-09-28 Illinois Tool Works Inc. Quick change rotary screen printing apparatus
US5346552A (en) * 1991-09-23 1994-09-13 Johannes Zimmer Device having a profile strip equipped with a squeeze element that is freely movable transversely to a working surface
US5388508A (en) * 1993-01-22 1995-02-14 Societe D'exploitation Des Machines Dubuit Squeegee head, in particular for silkscreen printing machines
US5400709A (en) * 1992-09-21 1995-03-28 Comco Machinery, Inc. Rotary print head module and impression bar
US6477946B1 (en) * 1999-09-17 2002-11-12 Riso Kagaku Corporation Stencil printing machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH550664A (de) * 1973-02-27 1974-06-28 Buser Ag Maschf Fritz Rotationsfilmdruckmaschine.
DE2930093C2 (de) * 1979-07-25 1983-05-11 Mathias 4815 Schloss Holte Mitter Rakelanordnung für eine Siebdruckmaschine
DE3638308A1 (de) * 1986-11-10 1988-05-19 Gerhard Plieninger Siebdruckmaschine
AT387161B (de) * 1987-05-18 1988-12-12 Zimmer Johannes Einrichtung zur zufuehrung einer fliessfaehigen substanz
EP0311730B1 (de) * 1987-10-10 1993-03-10 Johannes Zimmer Rakelgerät
DE4123590C2 (de) * 1991-07-17 1999-10-07 Gerd Quast Siebdruckmaschine

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2071824A (en) * 1933-10-13 1937-02-23 Poster Products Inc Stencil printing machine
US2202799A (en) * 1938-12-07 1940-05-28 Owens Illinois Glass Co Stenciling apparatus
US2210633A (en) * 1937-12-14 1940-08-06 Claire Hartman Multicolor fabric printing
US2295979A (en) * 1939-08-30 1942-09-15 Kimble Glass Co Stenciling machine
US2498917A (en) * 1946-09-23 1950-02-28 Gattuso Henry Andrew Stenciling apparatus
US2534320A (en) * 1946-05-16 1950-12-19 Champion Paper & Fibre Co Apparatus for coating paper
US2814987A (en) * 1955-02-14 1957-12-03 Robert F Foard Printing machine
US3006275A (en) * 1960-05-13 1961-10-31 Inta Roto Machine Company Inc Micrometer doctor bar assembly
US3109365A (en) * 1962-01-04 1963-11-05 William M Karlyn Stenciling apparatus
US3139823A (en) * 1961-11-10 1964-07-07 Landesman Eugene Screen printing machine
US3276356A (en) * 1964-10-02 1966-10-04 Monsanto Co Methods and apparatus for handling and forming indicia on articles

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2071824A (en) * 1933-10-13 1937-02-23 Poster Products Inc Stencil printing machine
US2210633A (en) * 1937-12-14 1940-08-06 Claire Hartman Multicolor fabric printing
US2202799A (en) * 1938-12-07 1940-05-28 Owens Illinois Glass Co Stenciling apparatus
US2295979A (en) * 1939-08-30 1942-09-15 Kimble Glass Co Stenciling machine
US2534320A (en) * 1946-05-16 1950-12-19 Champion Paper & Fibre Co Apparatus for coating paper
US2498917A (en) * 1946-09-23 1950-02-28 Gattuso Henry Andrew Stenciling apparatus
US2814987A (en) * 1955-02-14 1957-12-03 Robert F Foard Printing machine
US3006275A (en) * 1960-05-13 1961-10-31 Inta Roto Machine Company Inc Micrometer doctor bar assembly
US3139823A (en) * 1961-11-10 1964-07-07 Landesman Eugene Screen printing machine
US3109365A (en) * 1962-01-04 1963-11-05 William M Karlyn Stenciling apparatus
US3276356A (en) * 1964-10-02 1966-10-04 Monsanto Co Methods and apparatus for handling and forming indicia on articles

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4069756A (en) * 1973-04-05 1978-01-24 Stork Amsterdam B.V. Squeegee device
US4036129A (en) * 1974-10-15 1977-07-19 Johannes Zimmer Squeegee device
US4077320A (en) * 1975-08-12 1978-03-07 Societe Alsacienne De Constructions Mecaniques De Mulhouse Suspension device for squeegee-supporting tubes in rotary screen printer
US4103614A (en) * 1975-09-29 1978-08-01 Mathias Mitter Screen printing machine with reciprocating endless printing screen
US4103613A (en) * 1975-09-29 1978-08-01 Mathias Mitter Screen printing machine with ink supply reciprocation
US4103615A (en) * 1976-01-14 1978-08-01 Sir James Farmer Norton & Co., Limited Vertical rotary screen printing machine and ink supply therefore
WO1985003672A1 (en) * 1984-02-21 1985-08-29 Lockwood Technical, Inc. Rotary screen printing apparatus
US4627345A (en) * 1984-02-21 1986-12-09 Lockwood Technical, Inc. Rotary screen printing apparatus
US4905591A (en) * 1987-10-09 1990-03-06 Stork Brabant B.V. Multicolor rotary screen printing machine with an improved squeegee suspension construction
US5247882A (en) * 1991-05-10 1993-09-28 Illinois Tool Works Inc. Quick change rotary screen printing apparatus
US5346552A (en) * 1991-09-23 1994-09-13 Johannes Zimmer Device having a profile strip equipped with a squeeze element that is freely movable transversely to a working surface
US5400709A (en) * 1992-09-21 1995-03-28 Comco Machinery, Inc. Rotary print head module and impression bar
US5388508A (en) * 1993-01-22 1995-02-14 Societe D'exploitation Des Machines Dubuit Squeegee head, in particular for silkscreen printing machines
US6477946B1 (en) * 1999-09-17 2002-11-12 Riso Kagaku Corporation Stencil printing machine

Also Published As

Publication number Publication date
CH533011A (de) 1973-01-31
AT319177B (de) 1974-12-10
ES400738A1 (es) 1975-01-16
GB1324969A (en) 1973-07-25
DE2209630A1 (de) 1972-09-28
FR2129727A5 (es) 1972-10-27
IT950077B (it) 1973-06-20
NL7103481A (es) 1972-09-19

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