EP0272526B1 - Stützeinrichtung in einer Zylindergrube - Google Patents

Stützeinrichtung in einer Zylindergrube Download PDF

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Publication number
EP0272526B1
EP0272526B1 EP87118056A EP87118056A EP0272526B1 EP 0272526 B1 EP0272526 B1 EP 0272526B1 EP 87118056 A EP87118056 A EP 87118056A EP 87118056 A EP87118056 A EP 87118056A EP 0272526 B1 EP0272526 B1 EP 0272526B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
cavity
pit
base
support strip
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
EP87118056A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0272526A2 (de
EP0272526A3 (en
Inventor
Christian Martin Michael Fischer
Detlef Fred Stork
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
Original Assignee
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
Priority to EP91116811A priority Critical patent/EP0479266B1/de
Publication of EP0272526A2 publication Critical patent/EP0272526A2/de
Publication of EP0272526A3 publication Critical patent/EP0272526A3/de
Application granted granted Critical
Publication of EP0272526B1 publication Critical patent/EP0272526B1/de
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
    • B41F27/1293—Devices for filling up the cylinder gap; Devices for removing the filler

Definitions

  • the invention relates to support devices in a cylinder pit of a plate or blanket cylinder according to the preamble of claim 1.
  • Cylinder pits in printing unit cylinders allow pressure relief in the area of the cylinder pits to deflect a respective impression cylinder and are therefore the main reason for the build-up of bending vibrations that lead to streaking on a printed product.
  • EP-A 00 60 939 shows a two-part cover of a cylinder pit of a web offset rotary printing press. This cover is intended to reduce shocks caused by the expiration of recessed parts of interacting cylinders. However, this coverage is very wide, i. that is, it creates a wide, pressure-free space so that it cannot be used in commercial machines, which generally have a very narrow cylinder channel.
  • a fastening device for a gravure printing plate can be found in GB-A 4 018 AD 1915.
  • a Strip proposed which is provided on its end face with protruding tongues and is suspended in the cylinder channel.
  • the tongues lie here in punched-outs which are precisely matched to the tongues at the two bent ends of the pressure plate.
  • the strip proposed in this publication is not supported on the base of the cylinder pit and is therefore not suitable for absorbing the large forces which are present when two printing press cylinders under high pressure are rolled onto one another.
  • CH-PS 643 780 shows a support device for a doctor blade on a cylinder of a sheet-fed rotary printing press.
  • the support device spans an arcuate wide cylinder pit.
  • the CH-PS 643 780 gives no indication of how to fix a narrow strip in a narrow cylinder pit.
  • DE-PS 701 996 shows a device which is suitable for covering a wide cylinder pit on a printing plate cylinder for a sheet-fed rotogravure printing press in such a way that contamination of the actuating means by printing ink is avoided.
  • the proposed cover is not suitable for use in narrow pits.
  • Locking bars with wedge-shaped projections are known from DE-PS 24 37 758.
  • the locking bars are in horizontal recesses in the two side walls of a pit Printing machine cylinder slidable. Their wedge-shaped projections can be brought into engagement with wedge-shaped locking counterparts of a wide insert. As a result, the insert is held in a pit. With the proposed device, it is not possible to attach a narrow bar in a narrow pit.
  • the invention has for its object to provide a releasable support device in a narrow pit of a plate or blanket cylinder, by its type of attachment ensures that the support device is always supported directly at the bottom of the pit or a component firmly connected to the bottom of the pit.
  • the advantages that can be achieved with the invention are, in particular, that the effectiveness of the reduction of the cylinder bumps when passing through a long pit is increased further, the support strip can be easily removed from the pit if a printing plate or rubber blanket end is to be threaded into the tensioning device.
  • the support can be used in a narrow pit of a plate or blanket cylinder.
  • the effectiveness of reducing cylinder bumps when passing a long pit is further increased, and it is possible to use blankets or blankets, the ends of which need not be specially designed. Introducing the Printing plate or blanket ends in the plate or blanket tensioning device by the support device is not hindered.
  • the support device can be long.
  • a plate or rubber cylinder 1 has an axially parallel pit 2.
  • the clamping elements 3; 4 are, for example, as a clamping spindle 3; 4 executed and each have a device (not shown) for receiving a printing plate or blanket end 8; 9 on.
  • Between the clamping spindles 3; 4 is in the middle of the pit 2 in one pit-long groove 12 a holding rail 11 screwed to the base 13 of the groove 12 by means of several fastening screws 14.
  • the holding rail 11 is almost pit-long and has several depressions 18 at intervals in the longitudinal direction of the pit.
  • Each recess 18 has a projection 21 directed to the left, which projects into the recess 18, starting on a right side 19.
  • This projection 21 each has a slope 20 inclined in the direction of the cylinder axis (wedge).
  • a support bar 22 is placed on the holding rail 11 and wedged with it.
  • the support bar 22 is not quite pit-long, it is approximately 9/10 of the cylinder pit length and has a number of vertical projections 24 on its underside 23.
  • the projections 24 are provided with wedges 25 directed to the right and on one side.
  • a free space 28 for receiving the projections 21 is provided between you and an underside 23 of the support bar 22.
  • the wedge inclination angle of the wedges 25 is designed such that it complements the bevels 20 of the projections 21 to 180 °.
  • the support bar 22 is placed on the holding rail 11 in such a way that the projections 24 each dip into a recess 18 in the holding rail 11.
  • the support bar 22 is shifted horizontally to the right until the wedge surface 20 of the projection 21 and a wedge surface 26 of the wedge 25 come into frictional engagement with one another.
  • the projections 21 of the holding rail 11 are made somewhat shorter than the spaces 28 formed by the wedges 25 and the underside 23 of the holding rail 11, so that the projections 21 can always engage in the spaces 28 until their wedge surface 20 is on the Wedge surface 26 of the wedge 25 and at the same time with an upper side 30 of the projections 21 rest on the underside 23 of the support strip 22.
  • the support bar 22 is wedged with the holding rail 11 by means of a clamping element designed as a truncated cone 27.
  • the truncated cone 27 is arranged at a left end of the pit 2 in a vertical bore 29 in the plate or rubber cylinder 1.
  • the bore 29 intersects the pit 2 at its left end, so that there is a vertical gap through which a left end 32 of the support bar 22, which is bevelled according to the angle of inclination of the truncated cone 27, projects into the bore 29.
  • the truncated cone 27 has a bore 34 in the middle for receiving a pressure screw 33.
  • the pressure screw 33 protrudes through the bore 34 and ends in a threaded hole 36 in the plate or rubber cylinder 1 in the extension of the bore 29.
  • the truncated cone 27 When the pressure screw 33 is tightened, the truncated cone 27 is moved vertically downward and acts with its conical surface 37 from above on the slope 32 of the support bar 11, so that it is pushed horizontally to the right, in the manner of a displaceable bayonet lock in the wedge position and held there.
  • the pressure screw 33 Below the truncated cone 27 and above the threaded hole 36, the pressure screw 33 has a collar 38 which, when the pressure screw 33 is unscrewed, presses against the truncated cone 27 from below and pushes it vertically upward from a wedge position. In order to be able to remove the support bar 22 from the cylinder pit 2, this must be shifted horizontally to the left.
  • a gap 42 is provided at a right end of the cylinder pit 2 between a cylinder wall 41 and a right end of the support bar 22, into which a lever tool 43 can be inserted to engage in a To reach engagement point 44 in the support bar 22.
  • the lever tool 43 When the lever tool 43 is actuated, it is supported on the cylinder wall 41 and displaces the support bar 22 to the left, so that the projections 21 come out of engagement with the spaces 28.
  • the support bar 22 can now be removed vertically upwards from the cylinder pit 2. After removal of the support bar 22, there is sufficient space in the cylinder pit 2 around the pressure plate or blanket ends 8; 9 to be able to thread freely into the clamping devices 3, 4. After threading, the support bar 22 is reinstalled.
  • the support bar 22 projects so far out of the pit 2 that the diameter of the cylinder 1 at this point is then equal to the diameter of the cylinder body 1 with the pressure plate 8 or rubber blanket 9.
  • the support bar 22 naturally protrudes from the pit 2 in a correspondingly adapted manner.
  • An end face 39 of the support bar 22 made of steel or hard plastic can be coated with a tough elastic material.
  • the narrow pit gap between the two printing plate or blanket ends 8; 9 is completely filled and covered by the support bar 2.
  • a support bar 58 which has two outwardly directed, parallel, rectangular projections 61, 62 on its foot part 59. Underneath, a round body 63 is welded under a lower edge 64 of the support bar 58, which extends at an angle ⁇ to an underside 67 of the projections 61, 62.
  • This support strip 58 is inserted from the cylinder face, with a left end 65 first, into a circular groove 66, which is also inclined at an angle ⁇ to the cylinder axis, until the undersides 67, 68 of the projections 61, 62 are flat on a base 60 the cylinder pit 2 come to rest.
  • the support bar 58 is held or released from this position in accordance with the description in the first exemplary embodiment (FIG. 3) by means of the truncated cone 27 or lever tool 43.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP87118056A 1986-12-24 1987-12-07 Stützeinrichtung in einer Zylindergrube Expired - Lifetime EP0272526B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP91116811A EP0479266B1 (de) 1986-12-24 1987-12-07 Stützeinrichtung in einer Zylindergrube

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3644501 1986-12-24
DE19863644501 DE3644501A1 (de) 1986-12-24 1986-12-24 Stuetzeinrichtung in einer zylindergrube

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP91116811.0 Division-Into 1991-10-02

Publications (3)

Publication Number Publication Date
EP0272526A2 EP0272526A2 (de) 1988-06-29
EP0272526A3 EP0272526A3 (en) 1989-09-20
EP0272526B1 true EP0272526B1 (de) 1992-11-11

Family

ID=6317241

Family Applications (2)

Application Number Title Priority Date Filing Date
EP91116811A Expired - Lifetime EP0479266B1 (de) 1986-12-24 1987-12-07 Stützeinrichtung in einer Zylindergrube
EP87118056A Expired - Lifetime EP0272526B1 (de) 1986-12-24 1987-12-07 Stützeinrichtung in einer Zylindergrube

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP91116811A Expired - Lifetime EP0479266B1 (de) 1986-12-24 1987-12-07 Stützeinrichtung in einer Zylindergrube

Country Status (5)

Country Link
US (1) US4790245A (enrdf_load_stackoverflow)
EP (2) EP0479266B1 (enrdf_load_stackoverflow)
JP (1) JPH0641203B2 (enrdf_load_stackoverflow)
DE (3) DE3644501A1 (enrdf_load_stackoverflow)
SU (1) SU1630606A3 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3928640A1 (de) * 1989-08-30 1991-03-14 Roland Man Druckmasch Gummituchzylinder fuer bogenrotations-offsetdruckmaschinen
DE4034767A1 (de) * 1989-12-01 1991-06-06 Heidelberger Druckmasch Ag Druckwerkszylinder fuer rotationsdruckmaschinen
DE4102858A1 (de) * 1990-03-08 1991-09-12 Heidelberger Druckmasch Ag Druckwerkszylinder fuer rotationsdruckmaschinen
DK1454745T3 (da) * 1999-12-02 2009-01-05 Koenig & Bauer Ag Trykværk i en rotationstrykkemaskine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2437758A1 (de) * 1974-08-06 1976-02-26 Koenig & Bauer Ag Vorrichtung zum befestigen von druckplattenspannvorrichtungen auf formzylindern
CH643780A5 (de) * 1978-12-11 1984-06-29 Roland Man Druckmasch Tiefdruckzylinder fuer bogen-rotations-tiefdruckmaschinen.

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191504018A (en) * 1915-03-13 1916-01-13 Alexander Allerton Kil Tallent An Improved Method of Attaching Engraved Sheets to Cylinders for Rotary Intaglio Printing.
US1506859A (en) * 1924-02-12 1924-09-02 Owen Malcolm Printing cylinder
US1654431A (en) * 1925-03-04 1927-12-27 Pickup William Rotary intaglio printing machine
US1545791A (en) * 1925-03-28 1925-07-14 Owen Malcolm Printing cylinder
GB364594A (en) * 1929-07-01 1932-01-06 Vogtlaendische Maschinenfabrik Form cylinder for rubber printing machines
DE640262C (de) * 1934-12-14 1936-12-29 E H Wilhelm Stein Dr Ing Vorrichtung zum Aufspannen von biegsamen Druckformen auf dem Formzylinder von Rotationsdruckmaschinen
DE701996C (de) * 1937-11-27 1941-01-28 Koenig & Bauer Schnellpressfab Mit einer biegsamen Druckplatte versehener Formzylinder fuer Bogen-Rotationstiefdruckmaschinen
JPS4219361Y1 (enrdf_load_stackoverflow) * 1964-08-05 1967-11-09
DE2804556C2 (de) * 1978-02-03 1983-11-24 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Abnehmbare Kanalabdeckung von Zylinderkanälen bei Druckmaschinen
DD150573A1 (de) * 1980-05-13 1981-09-09 Klaus Goerner Vorrichtung zum fuehren und halten der bedruckstoffbahnen an gummizylindern von rollenrotationsdruckmaschinen
DE3110982A1 (de) * 1981-03-20 1982-10-07 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Plattenzylinder mit einer plattenbefestigungsvorrichtung
DE3337111C2 (de) * 1983-04-06 1985-05-09 Albert-Frankenthal Ag, 6710 Frankenthal Tiefdruckformzylinder
DE3326215C2 (de) * 1983-07-21 1986-04-03 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Aufspannen einer Druckplatte oder eines Gummituches
DE3434642C1 (de) * 1984-09-21 1986-06-19 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Stoßfreie Druckplatten- und Gummituchspannvorrichtung an Druckwerkszylindern von Rotationsdruckmaschinen
DE3540581A1 (de) * 1985-11-15 1987-05-21 Roland Man Druckmasch Druckwerkzylinder mit einem in dessen zylindergrube angeordneten fuellstueck

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2437758A1 (de) * 1974-08-06 1976-02-26 Koenig & Bauer Ag Vorrichtung zum befestigen von druckplattenspannvorrichtungen auf formzylindern
CH643780A5 (de) * 1978-12-11 1984-06-29 Roland Man Druckmasch Tiefdruckzylinder fuer bogen-rotations-tiefdruckmaschinen.

Also Published As

Publication number Publication date
EP0479266B1 (de) 1994-05-18
EP0272526A2 (de) 1988-06-29
DE3789877D1 (de) 1994-06-23
DE3644501A1 (de) 1988-07-07
US4790245A (en) 1988-12-13
EP0272526A3 (en) 1989-09-20
DE3644501C2 (enrdf_load_stackoverflow) 1989-11-23
SU1630606A3 (ru) 1991-02-23
JPS63168357A (ja) 1988-07-12
EP0479266A1 (de) 1992-04-08
JPH0641203B2 (ja) 1994-06-01
DE3782629D1 (de) 1992-12-17

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