EP0113669B1 - Zylinder für Tiefdruckmaschinen - Google Patents

Zylinder für Tiefdruckmaschinen Download PDF

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Publication number
EP0113669B1
EP0113669B1 EP84100123A EP84100123A EP0113669B1 EP 0113669 B1 EP0113669 B1 EP 0113669B1 EP 84100123 A EP84100123 A EP 84100123A EP 84100123 A EP84100123 A EP 84100123A EP 0113669 B1 EP0113669 B1 EP 0113669B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
axis
clamping
clamping piece
segment
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
Application number
EP84100123A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0113669A2 (de
EP0113669A3 (en
Inventor
Joachim Bernauer
Joachim Dorow
Pirmin Göbel
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of EP0113669A2 publication Critical patent/EP0113669A2/de
Publication of EP0113669A3 publication Critical patent/EP0113669A3/de
Application granted granted Critical
Publication of EP0113669B1 publication Critical patent/EP0113669B1/de
Expired 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
    • B41F27/1293—Devices for filling up the cylinder gap; Devices for removing the filler
    • 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
    • B41F27/1256—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices with two semi-cylinders movable relative to each other

Definitions

  • the invention relates to a cylinder for gravure printing machines with a device for tensioning winding plates, which has a clamping piece which can be pivoted about the cylinder axis and has an outer contour corresponding to the outer cylinder contour.
  • this object is achieved in that the clamping piece which can be pivoted about the cylinder axis has a beak edge which can be pivoted about an axis which is offset parallel to the cylinder axis and which cooperates with a clamping member for receiving an associated claw of the winding plate.
  • the beak edge of the clamping piece can be pivoted out of the cylinder circumference for hanging in the associated hanging claw about an axis offset parallel to the cylinder axis and can be pivoted about the cylinder axis for subsequent tensioning of the winding plate.
  • the fact that the beak edge can be swiveled out of the cylinder circumference makes it easier to insert hook-in claws that are bent inwards at an acute angle and therefore not only permits simple plate production, but also ensures high user-friendliness.
  • This also applies in an advantageous manner to very long hooking claws which are bent at a very acute angle, which has a positive effect on avoiding bending of the hooking claws and can thus simplify the clamping member assigned to them.
  • the clamping piece can be designed as a one-piece segment that is pivotably received on a bracket that can be pivoted about the cylinder axis and can be locked here.
  • a bracket that can be pivoted about the cylinder axis and can be locked here.
  • the clamping piece has a segment which can be pivoted about the cylinder axis and on which an edge strip with the outer contour corresponding to the cylinder outer contour is arranged so as to be pivotable about an axis which is offset parallel to the cylinder axis.
  • the beak edge on the edge strip side for hanging in the associated hook-in claw, which facilitates the hooking-in process even when the hook-in claw is severely bent, without any swiveling space would be needed in the area of the segment boundary opposite the beak edge.
  • this segment can be provided with a seat that starts from the peripheral contour and has a cup-shaped cross-section that is concentric to the axis of rotation of the edge strip, in which a corresponding curvature of the edge strip engages. This ensures that there is practically no gap in the operating position in the area of the butt joint between the edge strip and the segment.
  • a further expedient measure can consist in that the operating position of the edge strip with respect to the assigned segment can be secured by means of a stop.
  • the stop automatically results in the desired operating position, in which an exactly circular circumferential contour is guaranteed, which has a positive effect on the ease of use.
  • the segment on the clamping piece side can comprise approximately half of the cylinder circumference. This ensures that any imprints that may occur in the area of the butt joints between the segment on the clamping piece side and the peripheral section that is stationary here lie in the area of the cut or the fold of the printed products cut from the paper web to be printed.
  • a further advantageous measure can be that the segment on the clamping piece side can be supported on the adjacent cylinder section by means of an eccentric shaft in the region of the butt joint opposite the beak edges.
  • the segment on the clamping piece side can be galvanized with the respectively adjacent cylinder section in the region of the butt joint opposite the beak edges. This avoids a continuous butt joint, which is expected to have excellent load-bearing capacity, so that there is practically no risk of being imprinted.
  • This butt joint can expediently run obliquely to an axially parallel surface line, which further increases the load-bearing capacity.
  • the two beak edges can be assigned opposing terminal strips which each have a continuous groove in the area of the mutually facing surfaces for receiving a continuous sealing strip.
  • the clamping strips enable the plate ends to be fixed precisely before the actual tensioning process, so that there is no fear of slipping of the plate ends, which can make the insertion process much easier and therefore has an advantageous effect on ease of use.
  • the sealing strip held at the same time by the terminal strips not only results in a simple sealing of the slot in the area of the plate ends, but also increases the clamping force applied by the terminal strips when the clamping movement begins.
  • the sealing strip mentioned can expediently be designed as a hose to which a pressure medium can be applied, which can be simply inserted into the assigned channel and brought into clean systems on the channel walls by subsequent pressurization.
  • the terminal strips can advantageously be provided with an injection channel which is open towards the slot to be filled and can be connected to an injection nozzle, so that there is a good distribution of the filling material.
  • a further advantageous measure can consist in the winding plate being stepped in the area of its hanging claws. This results in clean, lateral boundaries of the slot to be filled in the circumferential area and thus clean contact surfaces for the filling material. This is limited laterally in the circumferential area by the step-shaped shoulders of the plate and, despite the rounding of the beak edges, does not run out laterally in the form of an infinitely tapering wedge, which can also have a positive effect on achieving an exact cylinder contour.
  • the gravure cylinder shown in FIG. 1 suitable for accommodating a winding plate (not shown in more detail), consists of a circumferential section 3 rigidly connected to a central axis 2 by means of webs 1 projecting radially inwards and a pivotally mounted on axis 2 via webs 4 through which axis 2 passes ,
  • a peripheral contour of the cylinder corresponding peripheral contour having clamping piece 5, the ge for tensioning the winding plate according to arrow 6 is adjustable in the circumferential direction about the axis 2.
  • the circumferential section 3 rigidly connected to the axis 2 and the clamping piece 5 each extend over half of the cylinder circumference in the illustrated embodiment and are provided on the one hand with beak edges 7 and 8 for hanging the inwardly bent hooking claws of the winding plate, not shown, and have, as shown on can best be seen from FIG. 2, on the other hand, to achieve a load-bearing transition, toothed ridges 9 which engage in one another in a tooth-like manner.
  • the toothed strips 9 are arranged parallel to an axially parallel generatrix of the cylinder circumference. If the load-bearing capacity should require it, the toothed strips 9 could be slightly inclined with respect to such a surface line.
  • continuous circumferential support rings 10 are provided, which form a lateral cylinder end and through which a doctor blade, which cooperates with the cylinder circumference during operation, is guided over the butt joint in the area of the beak edges 7, 8.
  • the support rings 10 protrude beyond the remaining circumference of the cylinder by a dimension corresponding to the thickness of the winding plate indicated at 11 in FIG. 2, so that there is a stepless transition when the winding plate is mounted.
  • the support rings could also simply be designed as twisted bundles.
  • the clamping edge 8 on the clamping piece side can be swung out in the radial direction, as is indicated in FIG.
  • the clamping piece 5 is formed in two parts in the exemplary embodiment shown and comprises a segment 13 which is pivotably arranged on the cylinder axis 2 and has an edge strip 14 which has the associated beak edge 8 and which in turn is pivotably mounted about an axis 15 offset parallel to the cylinder axis 2.
  • the ends of the axis 15 formed by a pin or the like can be received on the lateral support rings 10, which then have to be movable about the cylinder axis 2 together with the clamping piece 5.
  • the clamping piece 14 is curved on the circumference with a radius corresponding to the cylinder radius, so that an exact circular cross section results in the position on which FIG. 1 is based.
  • the clamping piece-side segment 13 is provided on the edge strip side with a seat 16 which is bowl-shaped in cross section and into which a corresponding offset 17 of the edge strip 14 engages.
  • the seat 16 and the offset 17 are provided with bearing surfaces that are curved concentrically to the axis 15 and extend to the outer cylinder circumference, which enables a large pivoting angle when pivoting the beak edge 8 and results in a stable transition between segment 13 and edge strip 14.
  • the edge strip 14 is pivoted inward about the axis 15 from the position indicated by dash-dotted lines in FIG. 1 such that its circumferential curvature coincides with the circular circumferential line predetermined by the cylinder circumference.
  • the plate can then be tensioned by pivoting the entire clamping piece 5 about the cylinder axis 2.
  • the operating position of the edge strip 14 is defined by a stop strip 18, which is fastened here to the edge strip 14 and, in the operating position, bears against an assigned stop surface of the segment 13.
  • the pivoting movement of the edge strip 14 about the associated axis 15 can be carried out by means of a toggle lever drive (not shown here) or preferably by means of an eccentric shaft. The same applies to the pivoting movement of the segment 13 and thus of the entire clamping piece 5 about the cylinder axis 2.
  • the clamping element for moving the clamping piece 5 is in a butt joint between the segment 13 on the clamping piece side and one formed in the area of the toothed strips 9 with respect to the cylinder axis 2 of the stationary circumferential section 3 belonging to the segment 19 provided channel 20 eccentric shaft 21 which can be operated from the side and which bridges the butt joint and is supported on the one hand on the segment 13 and on the other hand on the segment 19.
  • a hose could also be provided as a tensioning element, which could be acted upon with a pressure medium, for example with hydraulic fluid, via a lateral valve, not shown here, which could be passed through a lateral tensioning ring 10.
  • the hose 21 When the hose 21 is pressurized accordingly, the hose 21 expands and displaces the tensioning piece 5 in the direction of the arrow 6.
  • clamping members attached to them are assigned, here in the form of continuous, pivotably mounted clamping strips 22.
  • the terminal strips 22 are adjustable in the illustrated embodiment by means of an associated eccentric shaft 23.
  • the slot 24 remaining in the area of the plate ends after the plate has been tensioned is sealed and sprayed with a filling consisting of hardening material.
  • the clamping strips 22, as can best be seen in FIG. 3, are provided with grooves 25 running over their entire length, which form a channel in which a sealing strip 26 can be inserted.
  • the sealing strip 26 can be inserted loosely before the tensioning process is carried out.
  • the channel assigned to the sealing strip 26 narrows, as a result of which the sealing strip 26 is pressed against the channel walls.
  • the sealing strip 26 can be formed by a sealing cord made of elastic material or by a so-called tear strip, which is provided with a tear insert formed by a wire or the like.
  • the sealing strip 26 is to be designed as a closed hose which can be acted upon by a pressure medium via a valve on the side, which is accessible in the region of a lateral support ring 10.
  • the pressurization exerted by the clamping strips 22 is increased by such pressurization and by the additional pressure increase resulting during the clamping process.
  • the clamping strips 22 are provided radially outside of the grooves 25 with further grooves 28 which form a continuous distribution channel which can be acted upon with filling material via a lateral injection nozzle.
  • the filling material can be injected in such a way that the radially outer boundary of the filling 27 is formed by a fillet, the depth of which is selected such that the color collected therein does not reach the paper going over it.
  • the slot 24 is completely filled.
  • a shaped bar 29 provided with a bearing surface, the curvature of which corresponds to the curvature of the cylinder covered with the plate, which is placed on the occupied cylinder in the region of the slot 24.
  • the slot 24 is thus closed by the form bar 29, the sealing strip 26, the side support rings 10 and the beak edges 7 and 8, so that the filling 27 can be pressed in with high pressure.
  • the latter is stepped in the area of the hooking claws 30.
  • the winding plate simply consists of a continuous support plate 31 and a coating 32 containing an engraving, which ends in the region of the hanging claws.
  • the one-piece clamping piece 5 is in this case formed by a segment 33 which extends over a cylinder half and to which the associated beak edge 8 is formed and which is received on a bracket 35 which can be pivoted about an axis 34 offset parallel to the cylinder axis 2 and is pivotable about the cylinder axis 2.
  • the segment 33 can be locked in the operating position with respect to the block 35.
  • the entire segment 33 is pivoted about the eccentric axis 34 in accordance with arrow 12, as a result of which the beak edge 8 emerges from the cylinder circumference.
  • the entire segment 33 is pivoted about the cylinder axis 2 according to arrow 6.
  • the further construction of the cylinder according to FIG. 4 can correspond to the arrangement according to FIG. 1, so that reference can be made here to avoid repetitions.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP84100123A 1983-01-11 1984-01-09 Zylinder für Tiefdruckmaschinen Expired EP0113669B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833300678 DE3300678A1 (de) 1983-01-11 1983-01-11 Zylinder fuer tiefdruckmaschinen
DE3300678 1983-01-11

Publications (3)

Publication Number Publication Date
EP0113669A2 EP0113669A2 (de) 1984-07-18
EP0113669A3 EP0113669A3 (en) 1985-07-03
EP0113669B1 true EP0113669B1 (de) 1988-04-20

Family

ID=6188043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84100123A Expired EP0113669B1 (de) 1983-01-11 1984-01-09 Zylinder für Tiefdruckmaschinen

Country Status (4)

Country Link
US (1) US4552068A (enrdf_load_stackoverflow)
EP (1) EP0113669B1 (enrdf_load_stackoverflow)
JP (1) JPS6034857A (enrdf_load_stackoverflow)
DE (2) DE3300678A1 (enrdf_load_stackoverflow)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK159251C (da) * 1983-03-12 1991-02-18 Basf Ag Fremgangsmaade til lukning af spalten mellem en paa et dybtrykapparats trykformcylinder opspaendt dybtrykplades ender, samt indretning ved dybtryksapparatet, til udoevelse af fremgangsmaaden
DE3315488A1 (de) * 1983-04-28 1984-10-31 Albert-Frankenthal Ag, 6710 Frankenthal Vorrichtung zum spannen von druckplatten
DE3433046A1 (de) * 1984-09-08 1986-03-20 Basf Ag, 6700 Ludwigshafen Verfahren zum verschliessen des spaltes zwischen den enden von auf formzylindern aufgespannten tiefdruckplatten
DE3540581A1 (de) * 1985-11-15 1987-05-21 Roland Man Druckmasch Druckwerkzylinder mit einem in dessen zylindergrube angeordneten fuellstueck
DE3722174A1 (de) * 1987-07-04 1989-01-12 Roland Man Druckmasch Vorrichtung zum aufspannen einer biegsamen druckplatte auf dem formzylinder einer bogen-rotationstiefdruckmaschine
JPH01152064A (ja) * 1987-12-09 1989-06-14 Alps Electric Co Ltd オフセツト印刷装置の版胴
US5882006A (en) * 1995-10-06 1999-03-16 Baldwin Technology Corporation Apparatus and method for turning and orienting articles within an article pathway
DE19537420C1 (de) * 1995-10-07 1997-03-13 Koenig & Bauer Albert Ag Vorrichtung zum Befestigen und Spannen von Druckplatten mit abgekanteten Enden
DE19706435C2 (de) * 1997-02-19 1999-01-28 Heidelberger Druckmasch Ag Vorrichtung zum Halten und Spannen von Zylinderaufzügen auf Druckmaschinenzylindern

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE454951C (de) * 1924-12-13 1928-01-20 Robert Jarvis Smothers Vorrichtung zum Aufspannen einer biegsamen Druckplatte auf den Formzylinder einer Rotationsdruckmaschine
US1730122A (en) * 1926-07-10 1929-10-01 Hoe Corp Printing machine
US1858305A (en) * 1928-06-14 1932-05-17 Meisel Press Mfg Company Press cylinder
US1773949A (en) * 1928-08-10 1930-08-26 Oxford Varnish Corp Photogravure roll
DE609099C (de) * 1930-03-10 1935-02-07 Angelo Dagnino Befestigungs- und Spannvorrichtung fuer biegsame Druckplatten auf dem Formzylinder von Rotationstiefdruckmaschinen
GB367436A (en) * 1930-11-20 1932-02-22 Leslie Thomas Albert Robinson Improvements in or relating to printing cylinders
US2051858A (en) * 1934-12-18 1936-08-25 Hoe & Co R Printing cylinder
US2194424A (en) * 1937-01-14 1940-03-19 Chambon Corp Printing cylinder
US2525003A (en) * 1947-11-17 1950-10-10 Commercial Lithograph Company Method of making lithograph blankets
DE1144294B (de) * 1959-05-22 1963-02-28 Carl Allers Etablissement As Vorrichtung zum Befestigen einer flexiblen Druckplatte auf dem Formzylinder einer Rotationsdruckmaschine
DE1983058U (de) * 1967-10-07 1968-04-11 Clivia Fa Druckzylinder.
FR1568127A (enrdf_load_stackoverflow) * 1968-02-14 1969-05-23
JPS5523740B1 (enrdf_load_stackoverflow) * 1971-03-09 1980-06-25
US3946670A (en) * 1972-07-17 1976-03-30 Ball Corporation Apparatus for mounting and locking printing plates
JPS5518056B2 (enrdf_load_stackoverflow) * 1975-02-18 1980-05-16
SE403353B (sv) * 1977-02-28 1978-08-14 Daetwyler & Co M Med bojliga tryckplattor forsedd och i sin lengdriktning delad formcylinder for rotationsdjuptryckmaskiner
DE3049143A1 (de) * 1980-12-24 1982-07-22 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Formzylinder fuer bogenrotations-tiefdruck-druckmaschinen

Also Published As

Publication number Publication date
DE3300678A1 (de) 1984-07-19
US4552068A (en) 1985-11-12
DE3470487D1 (en) 1988-05-26
JPS6034857A (ja) 1985-02-22
EP0113669A2 (de) 1984-07-18
EP0113669A3 (en) 1985-07-03
DE3300678C2 (enrdf_load_stackoverflow) 1988-04-07

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