US3811378A - Rotary screen printing with internally driven roller squeegee - Google Patents

Rotary screen printing with internally driven roller squeegee Download PDF

Info

Publication number
US3811378A
US3811378A US00264988A US26498872A US3811378A US 3811378 A US3811378 A US 3811378A US 00264988 A US00264988 A US 00264988A US 26498872 A US26498872 A US 26498872A US 3811378 A US3811378 A US 3811378A
Authority
US
United States
Prior art keywords
screen
squeegee
roller squeegee
gear
color tube
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
US00264988A
Other languages
English (en)
Inventor
W Bohm
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3811378A publication Critical patent/US3811378A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • a screen printing machine has two end pieces with a rotary screen attached thereto.
  • a color tube extends axially inside the screen.
  • a shaft positioned around the color tube drives a roller squeegee within the screen.
  • This invention relates to a screen printing machine with a rotary screen positioned between two end pieces, a color tube axially extending inside the screen and a driven roller squeegee.
  • the aforementioned machines have the advantage, compared with machines in which the roller squeegee is driven only by means of friction with the inside wall of the screen, that with synchronized drive of the screen and squeegee wear of the squeegee is practically eliminated. Furthermore, as is desired in certain cases, it is possible to provide for a predetermined difference in rotational speed between the screen and the squeegee.
  • the present invention solves the above prior art problems by arranging the shaft which drives the squeegee by means of gear wheels, friction wheels, chains or the like within the screen and mounted on the color tube.
  • the shaft which drives the squeegee by means of gear wheels, friction wheels, chains or the like within the screen and mounted on the color tube.
  • separate drive and support elements extending through the opening of the end piece for the squeegee are unnecessary, and the color tube and squeegee drive form a single unit. It therewith is possible to have the size of this unit and the diameter of the squeegee small enough to be inserted as a unit through the opening of the end piece. This is particularly true when the shaft is in the form ofa hollow shaft surrounding the color tube, as shown below with regard to a preferred embodiment of the invention.
  • FIG. 1 is a longitudinal section of one end of a screen illustrating the invention.
  • FIG. 2 is a diagrammatic view of a printing machine provided with a squeegee drive accordingto the invention.
  • the cylinder screen 1 of FIG. 1 is mounted on an end piece 2 in a manner not shown in detail.
  • End piece 2 has a reduced diameter flange 3 having an inside diameter d.
  • a gear wheel 4 is mounted on the flange of the end piece.
  • the diameter D of the pitch circle of gear 4 is equal to the outside diameter of screen 1.
  • Gear wheel 4 engages with a drive gear wheel 6 mounted on the support 5 of the machine.
  • a color tube 7, whose ends are mounted in the support of the machine, axially extends through the opening of flange 3 into screen 1. Through color tube 7 dye is supplied in a manner known per se to the inside of screen 1.
  • a hollow shaft 10 is positioned coaxially around the color tube 7 and supported thereon by means of two fric'tion bearings 8 and 9.
  • Two gear wheels 11 and 12 are fixed to hollow shaft 10.
  • the gear wheel 11 is driven by the drive wheel gear 6 through anintermediate gear wheel 13, positioned on the machine support 5.
  • the gear wheel 12 mates with another gear wheel 14 which is arranged on the end of a shaft 15 supporting a roller squeegee 17.
  • the roller squeegee 17 is positioned in a collar 16 supported by the color tube 7.
  • the diameters of the gear wheels preferably are such that the circumferential speed of the squeegee is equal to the circumferential speed of the screen, whereby wear of the screen is substantially reduced. If however, as is known, the squeegee is provided with a laminated covering, for instance having ridges,'a slight speed differential is useful, in order to facilitate the bending or tilting of the ridges.
  • the desired synchronization is achieved by providing that the ratio'of the diameters of the pitch circles of the gear wheels 11 and 12 is equal to the ratio of the diameters between squeegee 17 and the pitch circle of gear wheel 14.
  • the dimensions are such that the distance a between the lowest point of the roller squeegee l7 and the uppermost point of gear wheel 12 is smaller than the inside diameter d of the opening in flange 3 of the end piece 2. This makes it possible to mount the squeegee along with its drive outside the cylindrical screen on the color tube and to thereafter insert the total unit.
  • the endless printer's blanket 18 runs over the front guide roller 22 and the rear, driven guide roller 23 in the direction of arrow 19.
  • the screen gear wheel 4, as well as the intermediate gear wheel 13, mesh with the drive gear wheel 6.
  • the intermediate gear wheel 13 transmits rotary movement, by means of the gear sheel 11, to the shaft 10 and subsequently to the squeegee.
  • the drive of the squeegee could also be effected from the hollow shaft by means of chains, belts, friction wheels or the like a mathematical synchronization not being assured in the two last mentioned examples. It would also be possible to construct the shaft as solid shaft and to position it alongside the color tube.
  • a rotary screen printing machine including a rotary screen mounted on end pieces having openings therein, a color tube supply means extending into the interior of said screen through at least one of said end piece openings, a roller squeegee mounted within said screen to contact the inner surface thereof, and means for rotating said roller squeegee;
  • roller squeegee being supported by said color tube supply means
  • said means for rotating said roller squeegee comprising a tubular shaft rotatably mounted coaxially around said color tube supply means, drive means positioned without said screen for imparting rotary motion to said tubular shaft, and motion transmitting means positioned within the interior of said screen and operatively connected between said tubular shaft and said roller squeegee for rotating said roller squeegee.
  • said motion transmitting means comprises a first gear wheel mounted on said tubular shaft and a second gear wheel mounted on said roller squeegee, said first and second gear wheels being in meshing relation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screen Printers (AREA)
US00264988A 1971-06-22 1972-06-21 Rotary screen printing with internally driven roller squeegee Expired - Lifetime US3811378A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT538171A AT315799B (de) 1971-06-22 1971-06-22 Siebdruckmaschine

Publications (1)

Publication Number Publication Date
US3811378A true US3811378A (en) 1974-05-21

Family

ID=3575159

Family Applications (1)

Application Number Title Priority Date Filing Date
US00264988A Expired - Lifetime US3811378A (en) 1971-06-22 1972-06-21 Rotary screen printing with internally driven roller squeegee

Country Status (8)

Country Link
US (1) US3811378A (it)
AT (1) AT315799B (it)
CH (1) CH540778A (it)
DE (1) DE2229721A1 (it)
FR (1) FR2143328B1 (it)
GB (1) GB1391119A (it)
IT (1) IT960698B (it)
NL (1) NL7208420A (it)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3919973A (en) * 1973-03-30 1975-11-18 Johannes Zimmer Squeegee device for applying liquid or viscous material to a web
US3965816A (en) * 1973-07-19 1976-06-29 Mitter & Co. Drive for rotary screen printer utilizing the roller squeegee
US3980017A (en) * 1974-10-31 1976-09-14 Black James Stencil screen coating apparatus
US3988985A (en) * 1973-06-20 1976-11-02 Mitter & Co. Squeegee drive for endless screen printing machine
US3995551A (en) * 1973-06-28 1976-12-07 Mitter & Co. Web tensioning and feeding apparatus
US4030411A (en) * 1974-07-03 1977-06-21 Peter Zimmer Rotary-screen printing machine
US5213032A (en) * 1991-07-04 1993-05-25 Stork Brabant B.V. Stencil drive for a screen printing machine
US5555802A (en) * 1993-11-12 1996-09-17 Riso Kagaku Corporation Printing drum of rotary stencil printer having flexible perforated cylinder incorporating allowance for bulging out
US5579689A (en) * 1993-11-12 1996-12-03 Riso Kagaku Corporation Printing drum of rotary stencil printer having a predetermined allowance for bulging out
US5603260A (en) * 1994-12-08 1997-02-18 Riso Kagaku Corporation Rotary stencil printer having gear train for synchronizing inner press roller with printing drum and including clutch for press bias control
CN104943345A (zh) * 2015-06-25 2015-09-30 广东鸿诚有机硅科技有限公司 走台硅胶丝印机自动刮刀旋转机构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3032401A1 (de) * 1980-08-28 1982-03-04 Mathias 4815 Schloss Holte Mitter Druckwerk einer siebdruckmaschine mit zylindrischer schablone

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1056715A (en) * 1909-10-11 1913-03-18 Underwood Typewriter Co Stenciling-machine.
US2698574A (en) * 1951-07-11 1955-01-04 Visking Corp Apparatus for bonding nonwoven webs
US2753794A (en) * 1951-06-15 1956-07-10 Chambon Ltd Squeegees for screen and stencil printing
US3232224A (en) * 1962-02-27 1966-02-01 Kramer David Rotary screen-printing machine
US3245341A (en) * 1963-04-15 1966-04-12 Electrostatic Printing Corp Powder image forming device
US3312165A (en) * 1962-10-03 1967-04-04 Carl S Strom Ink cartridge mount and internal inker for rotary stencil duplicator
US3352234A (en) * 1966-09-26 1967-11-14 Unimark Corp Electrostatic printer with powder feed structure inside stencil drum
US3408984A (en) * 1967-10-25 1968-11-05 Tension Envelope Corp Closed system adhesive applicator
US3487775A (en) * 1966-10-03 1970-01-06 Xerox Corp Imaging system
US3592132A (en) * 1968-11-27 1971-07-13 Erich Weber Rotary foraminous printing machine with magnetically attracted internal inker

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1056715A (en) * 1909-10-11 1913-03-18 Underwood Typewriter Co Stenciling-machine.
US2753794A (en) * 1951-06-15 1956-07-10 Chambon Ltd Squeegees for screen and stencil printing
US2698574A (en) * 1951-07-11 1955-01-04 Visking Corp Apparatus for bonding nonwoven webs
US3232224A (en) * 1962-02-27 1966-02-01 Kramer David Rotary screen-printing machine
US3312165A (en) * 1962-10-03 1967-04-04 Carl S Strom Ink cartridge mount and internal inker for rotary stencil duplicator
US3245341A (en) * 1963-04-15 1966-04-12 Electrostatic Printing Corp Powder image forming device
US3352234A (en) * 1966-09-26 1967-11-14 Unimark Corp Electrostatic printer with powder feed structure inside stencil drum
US3487775A (en) * 1966-10-03 1970-01-06 Xerox Corp Imaging system
US3408984A (en) * 1967-10-25 1968-11-05 Tension Envelope Corp Closed system adhesive applicator
US3592132A (en) * 1968-11-27 1971-07-13 Erich Weber Rotary foraminous printing machine with magnetically attracted internal inker

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3919973A (en) * 1973-03-30 1975-11-18 Johannes Zimmer Squeegee device for applying liquid or viscous material to a web
US3988985A (en) * 1973-06-20 1976-11-02 Mitter & Co. Squeegee drive for endless screen printing machine
US3995551A (en) * 1973-06-28 1976-12-07 Mitter & Co. Web tensioning and feeding apparatus
US3965816A (en) * 1973-07-19 1976-06-29 Mitter & Co. Drive for rotary screen printer utilizing the roller squeegee
US4030411A (en) * 1974-07-03 1977-06-21 Peter Zimmer Rotary-screen printing machine
US3980017A (en) * 1974-10-31 1976-09-14 Black James Stencil screen coating apparatus
US5213032A (en) * 1991-07-04 1993-05-25 Stork Brabant B.V. Stencil drive for a screen printing machine
US5555802A (en) * 1993-11-12 1996-09-17 Riso Kagaku Corporation Printing drum of rotary stencil printer having flexible perforated cylinder incorporating allowance for bulging out
US5579689A (en) * 1993-11-12 1996-12-03 Riso Kagaku Corporation Printing drum of rotary stencil printer having a predetermined allowance for bulging out
US5603260A (en) * 1994-12-08 1997-02-18 Riso Kagaku Corporation Rotary stencil printer having gear train for synchronizing inner press roller with printing drum and including clutch for press bias control
CN104943345A (zh) * 2015-06-25 2015-09-30 广东鸿诚有机硅科技有限公司 走台硅胶丝印机自动刮刀旋转机构
CN104943345B (zh) * 2015-06-25 2017-05-10 东莞市鸿程机械有限公司 走台硅胶丝印机自动刮刀旋转机构

Also Published As

Publication number Publication date
IT960698B (it) 1973-11-30
NL7208420A (it) 1972-12-28
AT315799B (de) 1974-06-10
GB1391119A (en) 1975-04-16
DE2229721A1 (de) 1973-01-11
FR2143328A1 (it) 1973-02-02
FR2143328B1 (it) 1973-07-13
CH540778A (de) 1973-08-31

Similar Documents

Publication Publication Date Title
US3811378A (en) Rotary screen printing with internally driven roller squeegee
US4911069A (en) Rotary stencil printer having printing drum having outer peripheral wall portion substantially made of only net material
US6684772B2 (en) Flexographic printing machine
EP0327975A2 (en) Automatic web guide roller cleaning device
JPH0524837B2 (it)
CN209208283U (zh) 一种自动调节方向的管材喷码装置
US4467720A (en) Spiral-type ductor
US20050188865A1 (en) Slide-in print unit for a variable format in offset printing
US5511474A (en) Drive for an oscillating roller in an inking unit of a rotary printing press
ATE73050T1 (de) Zwischengetriebe zur uebertragung einer drehbewegung in die hin-und herbewegung einer walze in farb- und/oder feuchtwerken von offsetdruckmaschinen.
JPH1067097A (ja) 印刷機
US5009157A (en) Rotary press comprising an endless block belt
US4718344A (en) Apparatus and method for oscillating the form rollers in a printing press
US3183831A (en) Rotary printing machine
US2351013A (en) Printing press
US3859916A (en) Device for working, particularly printing of sheet materials
CN206826113U (zh) 印刷压力调整机构
US3473410A (en) Repeat transmission
US4103613A (en) Screen printing machine with ink supply reciprocation
US3229629A (en) Cylinder supporting and separating mechanism for cloth printing machines
KR100231519B1 (ko) 그라비아 인쇄기의 인쇄유니트
US2629320A (en) Serial number printing control device
SU664543A3 (ru) Печатный аппарат ротационной машины дл печати на ткани
CN216183795U (zh) 一种印刷机传墨机构的调节装置
CN215882953U (zh) 一种可调整打印不同材质的印刷机驱动传动机构