US3913480A - Device for locking up flexible printing plates on forme cylinders of printing presses - Google Patents

Device for locking up flexible printing plates on forme cylinders of printing presses Download PDF

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Publication number
US3913480A
US3913480A US351939A US35193973A US3913480A US 3913480 A US3913480 A US 3913480A US 351939 A US351939 A US 351939A US 35193973 A US35193973 A US 35193973A US 3913480 A US3913480 A US 3913480A
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US
United States
Prior art keywords
cam means
locking plate
plate
groove
printing
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
US351939A
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English (en)
Inventor
Bertram Wilhelm-Georg Dauner
Helmut Hermann Marx
Karl-Heinz Arno Wolfram
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.)
Koenig and Bauer AG
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Koenig and Bauer AG
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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of USB351939I5 publication Critical patent/USB351939I5/en
Application granted granted Critical
Publication of US3913480A publication Critical patent/US3913480A/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
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/1225—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly
    • B41F27/1243—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly by pivotal or swivelling motion, e.g. by means of a rocking lever

Definitions

  • the invention relates to a device for locking up flexible printing plates on forme cylinders of printing presses in which the printing plate is fastened detachably at its one axially extending first end to a first edge of a cylinder groove and its second end is connected with a spring fastener, the resilience of which can be released by means of a rotatable longitudinal shaft.
  • this object has been solved in such a manner that the first end of the printing plate is capable of being fastened to a first locking plate capable of swinging on a first hinge and that the other fastener consists of a second locking plate capable of swinging on a second hinge.
  • the locking plates be supported in hinge joints.
  • FIG. 1 is a cross section of the device, the plate being fixed in position
  • FIG. 2 is a cross section in released position
  • FIG. 3 is a section of III III in FIG. 4, and
  • FIG. 4 is a plan view on a reduced scale.
  • a device for locking up a flexible printing plate 3 is fastened.
  • the said device consists among other parts in a locking plate 4, which extends over the width of the printing plate 3 and has at its one end some lock up hooks 5. These lock up hooks 5 are received in holes 6 in the printing plate 3.
  • the other end of the locking plate 4 is forming, together with a semicircular formed end of a hinge plate 9, a hinge 7 on which it is capable of swinging.
  • a leaf spring 8 By pressure applied by a leaf spring 8 the locking plate dis swung into a position in which the printing plate 3 is fixed.
  • a hold down bar 21 through which the screws extend holds the hinge plate 9 down on the lower end of leaf spring 8 at the bottom of groove 2.
  • the hold down bar It extends substantially the length of each locking plate.
  • the hinge plate 9 has a semicircular portion 11 at its other end so as to form with the lower end of another locking plate 13 a hinge joint 12.
  • the locking plate 13 ends on the other end in fixing hooks 14 to which the first end of the printing plate 3 is hung by means of holes 6 formed therein as in the other end of the printing plate 3.
  • the locking plate 13 is pressed by a spring 16 received in a transversely extending recess in bar 21 to a first border or abutment 2.1 in the adjacent wall portion of the cylinder groove 2. In this position it rides against a cam 17 on a longitudinal shaft 18. By rotating the longitudinal shaft 18 or the cam 17 respectively the locking plate 13 is swung around the hinge 12, and thus the printing plate 3 is shifted in circumferential direction contrary to the effect of the spring 16.
  • a half-side milled longitudinal shaft 19 is received in a longitudinal recess in bar 21 with the half-side parallel to locking plate 4.
  • the locking plate 4 is moved contrary to the effect of the spring 8 until it fits against a second border or abutment 2.2 in the upper portion of the side wall of the cylinder groove 2. In this position the plate 3 can be hung easily into the fixing hooks 5.
  • the cam 17 of the registering device can be set to zero position (see FIG. 2).
  • FIG. 3 shows a section III III of the device.
  • the longitudinal shaft 18 ends in a hexagon 22 and the longitudinal shaft 19 in a hexagon 23.
  • the longitudinal shaft 19 is supported in the bar 21 in which also the spring 16 is positioned.
  • FIG. 4 a plan view is shown, from which is to be seen that the hexagons 22, 23- are accessible by means of notches 24, 25 which are milled into the forme cylinder 1 in circumferential direction.
  • the device enables the disposition of as many lock up devices as required over the width of a cylinder, because actuation by the hexagons 22, 23 can be realized close to the printing plate and the hexagons 22, 23 are disposed in the area of the blank white margin.
  • the plate ends are guided precisely by the locking plate 4, 13.
  • the forces having an effect on the longitudinal shafts l8, 19 are absorbed over the whole length of the shafts by the support in the cylinder 1 or in the bar 21 respectively.
  • a device for detachably holding flexible printing plates on forme cylinders of printing presses comprising in combination:
  • first locking plate rotatably positioned in said groove, said first locking plate extending substantially the width of said printing plate, saidfirst locking plate having an axially extending hinge portion at its lower end and hook portions on its upper end, said hook portions being receivable in apertures in a first end of said printing plate; hold down bar secured in said groove; first cam means rotatably carried in an axially extending recess in said hold down bar, said first cam means and said hold down bar extending substantially the length of said groove, said first cam means having wrench receiving means on an end thereof for rotating said first cam means to cause said first cam means to press against a first side of said first locking plate throughout its length; leaf spring having a transversely extending bottom end positioned in said groove beneath said hold down bar and having an upper end which presses against a second side of said first locking plate, said first cam means and said leaf spring holding said first end of said printing plate in a selected position; a second locking plate rotatably positioned in said groove opposite said first locking plate, said second locking plate extending substantially
  • second cam means rotatably carried in a wall of said groove and having wrench receiving means on an end thereof for rotating said second cam means to cause said second cam means to press against a first side of said second locking plate throughout its length;
  • hinge plate said hinge plate having semicircular end portions opening downwardly to secure said is secured in said groove by screws extending through said bar and being threadably received in said forme cylinder.
  • said second cam means further includes a vernier scale means whereby the position of said second cam means may be accurately determined.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
US351939A 1972-05-23 1973-04-17 Device for locking up flexible printing plates on forme cylinders of printing presses Expired - Lifetime US3913480A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722225016 DE2225016C3 (de) 1972-05-23 1972-05-23 Vorrichtung zum aufspannen von biegsamen druckplatten auf formzylinder von rotationsdruckmaschinen

Publications (2)

Publication Number Publication Date
USB351939I5 USB351939I5 (sv) 1975-01-28
US3913480A true US3913480A (en) 1975-10-21

Family

ID=5845622

Family Applications (1)

Application Number Title Priority Date Filing Date
US351939A Expired - Lifetime US3913480A (en) 1972-05-23 1973-04-17 Device for locking up flexible printing plates on forme cylinders of printing presses

Country Status (7)

Country Link
US (1) US3913480A (sv)
CH (1) CH546146A (sv)
DE (1) DE2225016C3 (sv)
FR (1) FR2185509B1 (sv)
GB (1) GB1406761A (sv)
IT (1) IT987238B (sv)
SE (1) SE388385B (sv)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4191106A (en) * 1975-12-01 1980-03-04 K and Manufacturing Company, Inc. Printing plate clamping assembly
US4587901A (en) * 1983-07-29 1986-05-13 Officine Meccaniche G. Cerutti S.P.A. Plate holding roller particularly for flexographic printing applications
US4688484A (en) * 1985-05-09 1987-08-25 M.A.N. Roland Druckmashchinen Aktiengesellschaft Mechanism for the parallel clamping of printing plates on the plate cylinder of printing machines
US4890555A (en) * 1987-06-03 1990-01-02 Motter Printing Press Co. Printing press plate lockup
US4907508A (en) * 1987-11-24 1990-03-13 Celfa Ag Printing cylinder with rubber coating for letterpress, flexography, rotogravure and rotary offset
US5014619A (en) * 1988-03-01 1991-05-14 Heidelberger Druckmaschinen Ag Device for tensioning flexible printing plates on a plate cylinder of a rotary printing machine
US5052120A (en) * 1990-04-16 1991-10-01 Eastman Kodak Company Sheet positioning, clamping, and tensioning means
US5123353A (en) * 1991-07-03 1992-06-23 Rockwell International Corporation Plate lock-up apparatus
US5245924A (en) * 1992-09-18 1993-09-21 Rockwell International Corporation Locking and adjusting device for a printing press
US5259312A (en) * 1989-10-09 1993-11-09 Man Miller Druckmaschinen Gmbh Position-strict clamping of a printing plate on a printing cylinder
US5284093A (en) * 1993-02-24 1994-02-08 Heidelberg Harris Inc. Plate cylinder with semi-automatic plate lock up
US5367954A (en) * 1992-12-28 1994-11-29 Heidelberger Druckmaschinin Ag Printing-form correction device compensating for the stretching of print carriers
US5415097A (en) * 1992-06-27 1995-05-16 Heidelberger Druckmaschinen Ag Device for transmitting tensioning forces to printing-unit cylinders
US5596928A (en) * 1993-08-20 1997-01-28 Heidelberg Harris S.A. Plate cylinder
US5644984A (en) * 1995-03-16 1997-07-08 Koenig & Bauer-Albert Aktiengesellschaft Cylinder with plate clamping device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2547481C3 (de) * 1975-10-23 1983-12-15 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Vorrichtung zum Befestigen und Spannen von biegsamen Druckplatten
DE2634554C2 (de) * 1976-07-31 1982-03-18 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Vorrichtung zum Befestigen und Spannen von biegsamen Druckplatten
DE2759434C3 (de) * 1977-10-01 1981-07-30 Albert-Frankenthal Ag, 6710 Frankenthal Vorrichtung zum Spannen von biegsamen Druckplatten am Formzylinder von Rotationsdruckmaschinen
DE2744371C3 (de) 1977-10-01 1980-04-10 Albert-Frankenthal Ag, 6710 Frankenthal Vorrichtung zum Befestigen und Spannen von biegsamen Druckplatten

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2708875A (en) * 1952-05-31 1955-05-24 Hoe & Co R Printing plate cylinder
US2768579A (en) * 1952-07-26 1956-10-30 Tribune Company Lock-up device for flexible printing plates
US2768578A (en) * 1953-10-08 1956-10-30 Tribune Company Lock-up mechanism for dry offset printing plates
US3019728A (en) * 1959-04-17 1962-02-06 Maschf Augsburg Nuernberg Ag Printing press machinery
US3043219A (en) * 1957-12-07 1962-07-10 Maschf Augsburg Nuernberg Ag Printing press machinery
US3095811A (en) * 1960-03-07 1963-07-02 Miehle Goss Dexter Inc Tension lockup for thin printing plates
US3107609A (en) * 1961-05-04 1963-10-22 Emric G Haramija Mechanism for holding and tensioning a printing plate on a printing cylinder
DD52380A1 (de) * 1965-11-02 1966-12-05 Vorrichtung zum Aufspannen biegsamer Druckplatten auf den Formzylinder einer Rotationsdruckmaschine
DD53708A1 (de) * 1966-04-28 1967-02-05 Druckplatten-Spannvorrichtung für Rotationsdruckmaschinen
US3335663A (en) * 1964-08-12 1967-08-15 Miehle Goss Dexter Inc Plate lockup for reversible plate cylinder
DE1263021B (de) * 1965-05-22 1968-03-14 Maschf Augsburg Nuernberg Ag Vorrichtung am Formzylinder von Rotationsdruckmaschinen zum Befestigen gebogener Stereotypieplatten
GB1200991A (en) * 1967-02-15 1970-08-05 Maschf Augsburg Nuernberg Ag A mounting plate for fixing a flexible printing plate on the plate cylinder of a rotary printing machine
GB1231021A (sv) * 1967-04-18 1971-05-05
US3603255A (en) * 1968-06-24 1971-09-07 Wood Industries Inc Saddle clamping device
US3625151A (en) * 1969-07-07 1971-12-07 Baker Perkins Ltd Printing plate locking device
US3626848A (en) * 1969-06-09 1971-12-14 American Rockwell Corp Lockup for thin plates
US3757691A (en) * 1972-06-12 1973-09-11 North American Rockwell Printing cylinder

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178442B (de) * 1960-03-07 1964-09-24 Miehle Goss Dexter Inc Vorrichtung zum Aufspannen von biegsamen Druckplatten auf Formzylinder von Druck-maschinen
US3281415A (en) * 1963-08-30 1966-10-25 Upjohn Co Steroidal delta16-20 (alpha and beta)-hydroperoxides
DE1252380B (sv) * 1964-09-10 1967-10-19
GB1217156A (en) * 1967-06-30 1970-12-31 Baker Perkins Ltd Improvements in printing plate lock up devices

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2708875A (en) * 1952-05-31 1955-05-24 Hoe & Co R Printing plate cylinder
US2768579A (en) * 1952-07-26 1956-10-30 Tribune Company Lock-up device for flexible printing plates
US2768578A (en) * 1953-10-08 1956-10-30 Tribune Company Lock-up mechanism for dry offset printing plates
US3043219A (en) * 1957-12-07 1962-07-10 Maschf Augsburg Nuernberg Ag Printing press machinery
US3019728A (en) * 1959-04-17 1962-02-06 Maschf Augsburg Nuernberg Ag Printing press machinery
US3095811A (en) * 1960-03-07 1963-07-02 Miehle Goss Dexter Inc Tension lockup for thin printing plates
US3107609A (en) * 1961-05-04 1963-10-22 Emric G Haramija Mechanism for holding and tensioning a printing plate on a printing cylinder
US3335663A (en) * 1964-08-12 1967-08-15 Miehle Goss Dexter Inc Plate lockup for reversible plate cylinder
DE1263021B (de) * 1965-05-22 1968-03-14 Maschf Augsburg Nuernberg Ag Vorrichtung am Formzylinder von Rotationsdruckmaschinen zum Befestigen gebogener Stereotypieplatten
DD52380A1 (de) * 1965-11-02 1966-12-05 Vorrichtung zum Aufspannen biegsamer Druckplatten auf den Formzylinder einer Rotationsdruckmaschine
DD53708A1 (de) * 1966-04-28 1967-02-05 Druckplatten-Spannvorrichtung für Rotationsdruckmaschinen
GB1200991A (en) * 1967-02-15 1970-08-05 Maschf Augsburg Nuernberg Ag A mounting plate for fixing a flexible printing plate on the plate cylinder of a rotary printing machine
GB1231021A (sv) * 1967-04-18 1971-05-05
US3603255A (en) * 1968-06-24 1971-09-07 Wood Industries Inc Saddle clamping device
US3626848A (en) * 1969-06-09 1971-12-14 American Rockwell Corp Lockup for thin plates
US3625151A (en) * 1969-07-07 1971-12-07 Baker Perkins Ltd Printing plate locking device
US3757691A (en) * 1972-06-12 1973-09-11 North American Rockwell Printing cylinder

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4191106A (en) * 1975-12-01 1980-03-04 K and Manufacturing Company, Inc. Printing plate clamping assembly
US4587901A (en) * 1983-07-29 1986-05-13 Officine Meccaniche G. Cerutti S.P.A. Plate holding roller particularly for flexographic printing applications
US4688484A (en) * 1985-05-09 1987-08-25 M.A.N. Roland Druckmashchinen Aktiengesellschaft Mechanism for the parallel clamping of printing plates on the plate cylinder of printing machines
US4890555A (en) * 1987-06-03 1990-01-02 Motter Printing Press Co. Printing press plate lockup
US4907508A (en) * 1987-11-24 1990-03-13 Celfa Ag Printing cylinder with rubber coating for letterpress, flexography, rotogravure and rotary offset
US5014619A (en) * 1988-03-01 1991-05-14 Heidelberger Druckmaschinen Ag Device for tensioning flexible printing plates on a plate cylinder of a rotary printing machine
US5259312A (en) * 1989-10-09 1993-11-09 Man Miller Druckmaschinen Gmbh Position-strict clamping of a printing plate on a printing cylinder
US5052120A (en) * 1990-04-16 1991-10-01 Eastman Kodak Company Sheet positioning, clamping, and tensioning means
US5123353A (en) * 1991-07-03 1992-06-23 Rockwell International Corporation Plate lock-up apparatus
US5415097A (en) * 1992-06-27 1995-05-16 Heidelberger Druckmaschinen Ag Device for transmitting tensioning forces to printing-unit cylinders
US5245924A (en) * 1992-09-18 1993-09-21 Rockwell International Corporation Locking and adjusting device for a printing press
US5367954A (en) * 1992-12-28 1994-11-29 Heidelberger Druckmaschinin Ag Printing-form correction device compensating for the stretching of print carriers
US5284093A (en) * 1993-02-24 1994-02-08 Heidelberg Harris Inc. Plate cylinder with semi-automatic plate lock up
US5596928A (en) * 1993-08-20 1997-01-28 Heidelberg Harris S.A. Plate cylinder
US5644984A (en) * 1995-03-16 1997-07-08 Koenig & Bauer-Albert Aktiengesellschaft Cylinder with plate clamping device

Also Published As

Publication number Publication date
USB351939I5 (sv) 1975-01-28
DE2225016C3 (de) 1976-01-29
SE388385B (sv) 1976-10-04
FR2185509A1 (sv) 1974-01-04
CH546146A (de) 1974-02-28
DE2225016B2 (de) 1975-06-05
GB1406761A (en) 1975-09-17
DE2225016A1 (de) 1973-11-29
FR2185509B1 (sv) 1979-06-22
IT987238B (it) 1975-02-20

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