US2961953A - Printing machines - Google Patents

Printing machines Download PDF

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Publication number
US2961953A
US2961953A US777416A US77741658A US2961953A US 2961953 A US2961953 A US 2961953A US 777416 A US777416 A US 777416A US 77741658 A US77741658 A US 77741658A US 2961953 A US2961953 A US 2961953A
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US
United States
Prior art keywords
cylinder
scraper
blanket
impression
transfer
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
US777416A
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English (en)
Inventor
Marius Mosegaard
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.)
CARL ALLERS A S Ets
Original Assignee
CARL ALLERS A S Ets
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 CARL ALLERS A S Ets filed Critical CARL ALLERS A S Ets
Application granted granted Critical
Publication of US2961953A publication Critical patent/US2961953A/en
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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
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/06—Cleaning arrangements or devices for offset cylinders

Definitions

  • This invention relates to offset printing machines and concerns more specially the blanket transfer cylinder which receives an ink impression from a printing cylinder and oifsets or transfers that impression to the material being printed in an impression zone where the material passes over an impression cylinder.
  • the operating surface of such a blanket cylinder is commonly a rubber or some such material which possesses some small degree of resilience which contributes in some part to the desirable form of the image which is imprinted on the material to be printed: in the operation of such machines the surface of the blanket becomes contaminated with a coating of stale or semi-hardened ink and when the material being printed is paper as is most common, the coating includes paper fibres or fluif.
  • a mechanical scraping device which comprises a series of strips, most conveniently of metal, which are supported at their ends so that when the strips are applied to the periphery of the transfer cylinder along their length, they are caused to conform to that surface.
  • the strips will wrap themselves about the periphery of the cylinder and so will have a scraping action over an extended length.
  • the possibility of the elements digging into the surface of the blanket is eliminated.
  • the scraper can be applied continuously to the blanket 2,961,953 Patented Nov. 2 9, 160
  • the scraper can be of dimensions such that will cover the length of the blanket.
  • the scraper may have a length which is only a fractional part of the length of the blanket, this scraper (while it is applied to the blanket) being moved lengthwise of itso that '(as the blanket cylinder rotates) the scraping action of the scraper passes progressively over the surface of the blanket thereby avoiding any localized action on theblanket.”
  • this scraper (while it is applied to the blanket) being moved lengthwise of itso that '(as the blanket cylinder rotates) the scraping action of the scraper passes progressively over the surface of the blanket thereby avoiding any localized action on theblanket.”
  • the scraper can take various constructional forms:v it could comprise a resilient metal sheet stamped out to form a .number of strips extending between marginal lands: the lands could be clamped in a'holder which would so be positioned with respect to the blanket that the strips between the lands lay themselves longitudinally to the curvature of the blanket, when the holder is in its operating position. A similar arrangement could be provided by securing the opposite ends of a series of parallel wires to the holder. ;.v
  • the cross sectional form of the strips or wires can be such as to provide backed-off edges which will act as blunt cutting edges to shear-off matter from the blanket.
  • the scraper has a length which is a part only of the length of the blanket, it is not essential to arrange for movement of the scraper lengthof the blanket.
  • a blanket cylinder is shown at 1, a printing cylinder at 2, and an impression cylinder at 3.
  • the cylinders rotates in the directions indicated so that the blanket on the blanket cylinder takes an impression from the printing cylinder 2 and later in its rotation transfers that impression to a web or sheet 4 passing around with the impression cylinder.
  • the scraper of this invention is shown at 5; this scraper comprises an open holder 6 carried by arms 7 from ⁇ rock shaft 8. Across the mouth of this holder is disposed at number of wires '9. ,which are arranged obliquely to the length of the holder: thus by angularly moving the rock shaft 8 the holder can be moved from theinactive position shown in dotted lines (in which the wires are clear of the surface of the blanket) to the active position shown in full lines.
  • the wiresf which may be either slack or taut in the inactive position of the holder
  • the wiresf wrap themselves about the curved periphery of the blanket, the zones of support of the strips 9 at their ends being on chords of the peripheral surface of the blanket cylinder '1.
  • the strips produce the required distributed scraping action on the surface of the blanket as it moves under the wires.
  • the holder 6could be formed of a metal having a sufiicient degree of resiliency as to impose a resilient pull on the wires when the holder 6 is in its active position: in this way, a degree of liveliness is imparted to the scraper constituted by the wires so that the wires accommodate themselves snugly to the form of the surface of the blanket.
  • the holder 6 is arranged to be moved between the active and inactive positions by an arm 11 which is con- -nected to an arm 12 on the shaft 8 through an overcentre spring 13.
  • This arm 11 can be arranged for actuation by the machine attendant or it can be operated as by being geared to the cylinder drive through a reduction gear so that the holder is moved into active position after the blanket cylinder has made a certain number of rotations.
  • a printing machine comprising a rotatable printing cylinder, a rotatable impression cylinder, a rotatable transfer cylinder disposed to receive an impression from the printing cylinder andto transfer it to material passing between itself and the impression cylinder, and in combination therewith, a scraper device for removing matter from the peripheral surface of the transfer cylinder, the said scraper device comprising a series of flexible metallic strip wiper elements supported at zones spaced apart in the lengths of said elements, and means to apply the strips to the peripheral surface of the transfer cylinder at a zone between their zones of support, said strips being wrapped about the said surface and said zones of support being on chords of said peripheral surface.
  • a printing machine comprising a rotatable printing cylinder, a rotatable impression cylinder, a rotatable transfer cylinder disposed to receive an impression from the printing cylinder and to transfer it to material passing between itself and the impression cylinder, and in combination therewith, a scraper device for removing matter from the peripheral surface of the transfer cylinder, the said scraper device comprising a series of strip wiper elements, means resiliently tensioning the elements between their ends, and means to apply the elements laterally to the peripheral surface of the transfer cylinder at a zone between their ends whereby the strips wrap themselves about that surface to give an extended scraping action thereon.
  • a printing machine comprising a rotatable printing cylinder, a rotatable impression cylinder, a rotatable trans fer cylinder disposed to receive an impression from the .4 printing cylinder and to transfer it to material passing between itself and the impression cylinder, and in combination therewith, a scraper device for removing matter from the peripheral surface of the transfer cylinder, the said scraper device comprising a series of flexible metallic strip wiper elements supported in spaced relationship to one another at zones which are spaced in the lengths of said elements and held obliquely to the axis of rotation of the transfer cylinder, and means to apply the strips to the peripheral surface of the transfer cylinder at a zone between their zones of support, said strips being wrapped about the said surface and said zones of support being on chords of said peripheral surface.
  • a printing machine comprising a rotatable printing cylinder, a rotatable impression cylinder, a rotatable transfer cylinder disposed to receive an impression from the printing cylinder and to transfer it to material passing between itself and the impression cylinder, and in combination therewith, a scraper .device for removing matter from the peripheral surface. of thetransfer cylinder, the
  • said scraper device comprising aseries of strip wiper elements, disposed obliquely to .the axis of rotation of the transfer cylinder, means resiliently tensioning the elements between their ends, and means to apply the elements laterally to the peripheralsurface of the transfer cylinder at a zone between their ends whereby the strips wrap themselves about that surfaceto give an extended scraping action thereon.
  • a printing machine comprising a rotatable printing cylinder, a rotatable impression cylinder, a rotatable transfer cylinder disposed to receive an impression from the printing cylinder and to transfer it to material passing between itself and the impression cylinder, and in combination therewith, a scraper device for removing matter from the peripheral surface of the transfer cylinder, the
  • said scraper device comprising a series of strip wiper elements supported attheir ends, means toapply the strips to the peripheral surface of the transfer cylinder at a zone between their ends whereby the strips wrap themselves about the said surface, and means to move the scraper in the axial sense of the-transfer cylinder.
  • a printing machine comprising a rotatable printing cylinder, a rotatable impression cylinder, a rotatable transfer cylinder disposed to receivean impression from the printing cylinder and to transfer it to material passing between itself and the impression cylinder, and in combination therewith, .
  • a scraper device for removing matter from the peripheral surface of the transfer cylinder comprising a series of strip wiper elcments, means resiliently tensioning the elements between their ends, means to apply the elements laterally to the peripheral surface .of the transfer cylinder at a zone between their ends whereby the strips wrap themselves about that surface to give an extended scraping action thereon, and means to move the scraper in the axial sense of the transfer cylinder.
  • a printing machine comprising a rotatable printing cylinder, a rotatable impression cylinder, a rotatable transfer cylinder disposed to receive an impression from the printing cylinder and to transfer it to material passing between itself and the impression cylinder, and in combination therewith, a transfer device for removing matter from the peripheral surface of the transfer cylinder, the said scraper device comprising a series of strip wiper elements disposed obliquely to the axis of rotation of the transfer cylinder, means resiliently tensicning the elements between their ends, means to apply the elements laterally to the peripheral surface of the transfer cylinder at a zone between their ends whereby the strips Wrap themselves about that surface to .give an extended scraping action thereon, and meansto move the scraper in the axial sense of the transfer cylinder.
  • a printing machine comprising a rotatable printing cylinder, a rotatable impression cylinder, a rotatable transfer cylinder disposed to receive an impression from the printing cylinder and to transfer it to material passing between itself and the impression cylinder, and in combination therewith, a scraper device for removing matter from the peripheral surface of the transfer cylinder, the said scraper device comprising a resilient troughed holder, a series of scraper elements in the form of strips secured at their ends to the side walls of the holder, and means to move the holder toward the transfer cylinder to apply the strips to the periphery of the transfer cylinder between their ends, whereby the strips are caused to wrap themselves about the periphery of the transfer cylinder against the resilient loading imposed by the walls of the trough.
  • a printing machine comprising a rotatable printing cylinder, a rotatable impression cylinder, a rotatable transfer cylinder disposed to receive an impression from the printing cylinder and to transfer it to material passing between itself and the impression cylinder, and in combination therewith, a scraper device for removing matter from the peripheral surface of the transfer cylinder, the said scraper device comprising a resilient troughed holder, a series of scraper wires secured at their ends to the side walls of the holder, and means to move the holder toward the cylinder to apply the Wires to the periphery of the transfer cylinder between their ends, whereby the wires are caused to wrap themselves about the periphery of the transfer cylinder against the resilient loading imposed by the walls of the trough.
  • a printing machine comprising a rotatable printing ylinder, a rotatable impression cylinder, a rotatable transfer cylinder disposed to receive an impression from the printing cylinder and to transfer it to material passing between itself and the impression cylinder, and in combination therewith, a scraper device for removing matter from the peripheral surface of the transfer cylinder, the said scraper device comprising a resilient troughed holder interiorly connectable to a source of suction for removing matter scraped by the scraper device, a series of scraper elements in the form of strips secured at their ends to the side walls of the holder, and means to move the holder toward the cylinder to apply the strips to the periphery of the transfer cylinder between their ends, whereby the strips are caused to wrap themselves about the periphery of the transfer cylinder against the resilient loading imposed by the walls of the trough.
  • a printing machine comprising a rotatable printing cylinder, a rotatable impression cylinder, a rotatable transfer cylinder disposed to receive an impression from the printing cylinder and to transfer it to material passing between itself and the impression cylinder, and in combination therewith, a scraper device for removing matter from the peripheral surface of the transfer cylinder, the
  • said scraper device comprising a resilient troughed holder interiorly connectable to a source of suction for removing matter scraped by the scraper device, a series of scraper wires secured at their ends to the side walls of the holder, and means to move the holder toward the cylinder to apply the wires to the periphery of the transfer cylinder between their ends, whereby the wires are caused to wrap themselves about the periphery of the transfer cylinder against the resilient loading imposed by the walls of the trough.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
US777416A 1958-05-27 1958-12-01 Printing machines Expired - Lifetime US2961953A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16952/58A GB911294A (en) 1958-05-27 1958-05-27 Improvements in or relating to printing machines

Publications (1)

Publication Number Publication Date
US2961953A true US2961953A (en) 1960-11-29

Family

ID=10086619

Family Applications (1)

Application Number Title Priority Date Filing Date
US777416A Expired - Lifetime US2961953A (en) 1958-05-27 1958-12-01 Printing machines

Country Status (7)

Country Link
US (1) US2961953A (pt)
CA (1) CA643150A (pt)
DE (1) DE1132151B (pt)
FR (1) FR1225159A (pt)
GB (1) GB911294A (pt)
IT (1) IT609538A (pt)
NO (1) NO100099L (pt)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1187245B (de) * 1962-05-30 1965-02-18 Maschf Augsburg Nuernberg Ag Vorrichtung zum Reinigen der Druckplatten am Formzylinder von Druckmaschinen
US4311094A (en) * 1979-03-12 1982-01-19 Ellison Lloyd W Method and apparatus for removing foreign matter from a printing press plate cylinder
EP0312827A2 (de) * 1987-10-17 1989-04-26 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Vorrichtung zum Reinigen eines Übertragungszylinders einer Rotationsdruckmaschine
CN113799508A (zh) * 2021-07-29 2021-12-17 邸城钦 一种软材料用吸附剥离式印刷工艺

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1146506B (de) * 1961-08-24 1963-04-04 Augsburg Neurnberg A G Maschf Vorrichtung an Rotationsdruckmaschinen zum Entfernen von Schmutzteilchen von Formzylindern

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1196437A (en) * 1913-07-26 1916-08-29 C S Britton Method of conditioning paper preparatory to printing thereon.
US1276163A (en) * 1917-01-11 1918-08-20 Charles Biesel Continuous-vacuum dehydrator.
US1378278A (en) * 1921-05-17 Machine
US1627774A (en) * 1923-06-14 1927-05-10 Linotype Machinery Ltd Means for washing lithographic printing surfaces
US2525982A (en) * 1948-04-27 1950-10-17 Addressograph Multigraph Apparatus for cleaning printing surfaces in offset printing machines
US2847935A (en) * 1952-12-26 1958-08-19 Dayton Rubber Company Washup attachment for printing presses and the like

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE163808C (pt) *
AT72171B (de) * 1913-06-19 1916-07-25 Karl Becker Vorrichtung zum Reinigen von Druckwalzen.
DE712437C (de) * 1937-11-10 1941-10-18 Gustav Foerster Vorrichtung zum Reinigen des Farbwerkes von Druckmaschinen
US2542205A (en) * 1946-06-07 1951-02-20 Ralph H Mort Washer for cloth-covered rollers
CH329404A (de) * 1955-05-24 1958-04-30 Haltiner Richard Verfahren zum Reinigen der Gummizylinder von Offsetdruckmaschinen und Vorrichtung zur Ausübung des Verfahrens

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1378278A (en) * 1921-05-17 Machine
US1196437A (en) * 1913-07-26 1916-08-29 C S Britton Method of conditioning paper preparatory to printing thereon.
US1276163A (en) * 1917-01-11 1918-08-20 Charles Biesel Continuous-vacuum dehydrator.
US1627774A (en) * 1923-06-14 1927-05-10 Linotype Machinery Ltd Means for washing lithographic printing surfaces
US2525982A (en) * 1948-04-27 1950-10-17 Addressograph Multigraph Apparatus for cleaning printing surfaces in offset printing machines
US2847935A (en) * 1952-12-26 1958-08-19 Dayton Rubber Company Washup attachment for printing presses and the like

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1187245B (de) * 1962-05-30 1965-02-18 Maschf Augsburg Nuernberg Ag Vorrichtung zum Reinigen der Druckplatten am Formzylinder von Druckmaschinen
US4311094A (en) * 1979-03-12 1982-01-19 Ellison Lloyd W Method and apparatus for removing foreign matter from a printing press plate cylinder
EP0312827A2 (de) * 1987-10-17 1989-04-26 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Vorrichtung zum Reinigen eines Übertragungszylinders einer Rotationsdruckmaschine
US4905596A (en) * 1987-10-17 1990-03-06 Man Roland Druckmaschinen Ag Combined cleaning and safety device for printing cylinder
EP0312827A3 (en) * 1987-10-17 1990-09-26 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Cleaning device for an offset cylinder in a rotary printing machine
JP2812687B2 (ja) 1987-10-17 1998-10-22 エム・アー・エヌ―ローラント・ドルツクマシーネン・アクチエンゲゼルシヤフト 輪転印刷機の印刷胴を清掃するための装置
CN113799508A (zh) * 2021-07-29 2021-12-17 邸城钦 一种软材料用吸附剥离式印刷工艺
CN113799508B (zh) * 2021-07-29 2023-05-09 扬州华伦印刷包装有限公司 一种软材料用吸附剥离式印刷工艺

Also Published As

Publication number Publication date
NO100099L (pt)
FR1225159A (fr) 1960-06-29
IT609538A (pt)
GB911294A (en) 1962-11-21
DE1132151B (de) 1962-06-28
CA643150A (en) 1962-06-19

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