EP0384385A2 - Dispositif pour changer la position d'une bande destinée à être imprimée - Google Patents

Dispositif pour changer la position d'une bande destinée à être imprimée Download PDF

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Publication number
EP0384385A2
EP0384385A2 EP90103220A EP90103220A EP0384385A2 EP 0384385 A2 EP0384385 A2 EP 0384385A2 EP 90103220 A EP90103220 A EP 90103220A EP 90103220 A EP90103220 A EP 90103220A EP 0384385 A2 EP0384385 A2 EP 0384385A2
Authority
EP
European Patent Office
Prior art keywords
web
printing
guide
displacement elements
printing unit
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.)
Granted
Application number
EP90103220A
Other languages
German (de)
English (en)
Other versions
EP0384385A3 (fr
EP0384385B1 (fr
Inventor
Gunnar Rau
Wolfgang Glunz
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen 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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0384385A2 publication Critical patent/EP0384385A2/fr
Publication of EP0384385A3 publication Critical patent/EP0384385A3/fr
Application granted granted Critical
Publication of EP0384385B1 publication Critical patent/EP0384385B1/fr
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
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines

Definitions

  • the invention relates to a device for changing the web position of a printing substrate web in a web-fed rotary printing press according to the preamble of claim 1.
  • a generic device which is used to change the web position of a printing material web on a printing unit of a newspaper printing press with a vertical web feed so that the areas of the machine which are normally covered by the web for maintenance work become accessible.
  • the printing material web is guided in a permanently S-shaped manner, independently of the position of the work platform and the operating state, around two deflection rollers which are arranged below a vertically movable work platform and can be moved with it.
  • the known work platform can be moved even during operation without changing the track length.
  • the platform is in the raised position, access to the lower cylinders of the printing unit is possible; a lowered position gives access to the upper cylinders.
  • the known arrangement cannot be used for a web-fed rotary printing press in a row design with a horizontal web contact-free between the printing units, since the height difference described above is missing as an essential prerequisite for moving the platform without changing the web length.
  • the S-shaped web guide there, referred to as a loop, around the deflecting rollers would, in the case of an arrangement between two printing units, of a roller conveyor built in series Be sure to cause the press to smear fresh ink.
  • the invention has for its object to provide a device for changing the web position, which allows easy access to all cylinders for retrofitting despite the printing material web in the machine, even in web-fed rotary printing presses in series.
  • the feed mechanism 3 further comprises a driven pull roller 4 and a pressure roller 5.
  • the printing material web 1 wraps around the pull roller 4 over part of its circumference. It is additionally pressed against the pressure roller 5 in order to be able to introduce the force required for the web drive.
  • 4 further deflection rollers 2 follow, the last of which is designated 2 a.
  • horizontally rigid booms 6 are arranged at the top of the last deflecting roller 2 a, at the outer end of which a further deflecting roller 7 is mounted.
  • pivot levers 8 are rotatably mounted on the side walls of the feed mechanism, which carry a pivot guide roller 9 at its outer end.
  • the pivot levers 8 are shown in FIG. 1 in their lower end position, in which they are secured by a locking lever 10 which is also rotatably mounted on the side wall of the feed mechanism 3.
  • the pivoting levers 8 can be pivoted by an approximately not shown, preferably pneumatic pivoting device after pivoting away the locking lever 10 by approximately 150 ° into an upper end position (see also FIG. 3).
  • the printing material web 1 is guided downward in this area during operation of the printing press from the last deflecting roller 2 a, wraps around the swivel guide roller 9 from below and is then guided upward again via the deflecting roller 7.
  • the swivel guide roller 9 forms a loop between the deflection rollers 2 a and 7 during operation and thus serves in conjunction with this as a web storage element.
  • the printing material web 1 is continued from the deflection roller 7 in such a way that it runs essentially horizontally onto the inlet nip between two blanket cylinders 12 and 13 of a first printing unit 14.
  • a deflection roller 11 which is also firmly mounted on the side walls of the feed mechanism 3 and is located approximately at the level of the inlet gap and by means of which the printing material web 1 overcomes the height difference from the deflection roller 7 to the inlet gap, is necessary below the deflection roller 7.
  • the height difference in the exemplary embodiment according to FIG. 1 essentially results from the fact that two printing material webs are processed in the entire printing press.
  • the feed mechanism 3 described above stands on a similar arrangement 3 ', by means of which a further printing substrate web designated 1' in the low position can be fed to a printing unit located further back. Since this part is unimportant for the description of the invention, the rollers and rollers which are involved in the guidance of the second printing material web 1 'and are arranged analogously to the upper feed mechanism 3 are not designated in any more detail.
  • the first printing unit 14 comprises two printing units arranged essentially vertically one above the other.
  • the lower printing unit is formed by the blanket cylinder 12, a plate cylinder 15 which can be adjusted thereon, and an inking and dampening unit, not shown.
  • the upper printing unit is formed by the blanket cylinder 13, a plate cylinder 16 which can be adjusted thereon, and an inking and dampening unit, not shown.
  • the printing material web 1 runs after passing the printing gap between the blanket cylinders 12, 13 without contact and essentially horizontally to an adjacent printing unit 17 and an inking and dampening unit, not shown, and of which the upper printing unit is formed by a blanket cylinder 20, a plate cylinder 21 and an inking and dampening unit, not shown.
  • a vertical guide 22 is provided in the free space between the printing units 14 and 17 at least at the level of a side wall.
  • the guide 22 is arranged in an advantageous embodiment only on the drive side of the printing press, so that the space between the printing units 14, 17 remains freely accessible from the operating side.
  • Two path displacement elements 23, 26 can be moved along this guide 22, which are connected to one another in an advantageous embodiment and can thus be moved together.
  • the web displacement elements 23 and 26 extend essentially parallel to the longitudinal direction of the printing material web 1. In the exemplary embodiment shown, they are formed by flat sheets which are rounded at their ends by edging. Other shapes, such as semicircular curved sheets or two bars or rollers extending transversely to the printing material web are also possible.
  • the web displacement elements 23, 26 are arranged one above the other and are at a vertical distance from one another.
  • the web displacement elements can also be moved in a more complex manner by means of a crank and rack, by means of an electric motor, pneumatically or hydraulically.
  • the web displacement elements 23, 26 are in a middle position. In this, the printing material web 1 is passed horizontally without contact between the underside of the upper web displacement element 23 and the top of the lower web displacement element 26. In Fig. 1 there are two more in addition to this drawn position Positions of the web displacement elements 23, 26 shown in dashed lines.
  • the upper web displacement element 23 In a lower position, designated 23 a, the upper web displacement element 23 is supported with its underside at least on the operating side of the printing press and can therefore be walked on.
  • the printing material web 1 runs underneath the upper web displacement element 23, which can thus be entered without hindrance when the machine is switched off for carrying out conversion or maintenance work on the upper printing units of the printing units 14, 17.
  • the printing material web 1 lies on the lower web displacement element 26.
  • the space between the printing units 14 and 17 can be entered unhindered for conversion and maintenance work on the lower printing units thereof.
  • the second printing unit 17 is further followed by an arrangement consisting of a guide 122 and an upper web taper element 123 and a lower web displacement element 126, the structure of which is identical to the arrangement formed from the parts 22, 23, 26.
  • the web displacement elements 123, 126 preferably connected to one another and thus jointly — can be moved along the guide 122 into a drawn central position, a lower position 123 a and an upper position 123 b. In the lower position 123 a, the upper web displacement element 123 can be walked on. Maintenance and retrofitting work on the second printing unit 17 is thus also possible from the rear.
  • a prerequisite for a change in the web position of the printing material web 1 from the middle operating position when the machine is switched off is the release of a web length required for the method by an upstream web storage element, which in the exemplary embodiment according to FIG. 1 is formed by the swivel guide roller 9 and the adjacent deflecting rollers 2 a and 6 .
  • the following measures are for this required: placing the blanket cylinders 12 and 13 apart from one another, pivoting the locking lever 10 away, pivoting the pivot lever 8 upward, thereby releasing the web loop formed by the pivot guide roller 9.
  • the pressure roller 5 can be switched off from the pull roller 4 and the pull roller 4 can be decoupled from its drive.
  • FIGS. 2 to 5 show an impression unit when used as a normal printing unit for perfecting.
  • a printing material web 31 is guided in a feed mechanism 33 over a plurality of deflection rollers 32, the last of which is designated 32 a.
  • the feed mechanism 33 further comprises, analogous to the first exemplary embodiment, a pull roller and a pressure roller, which, however, are not shown in FIG. 2 due to the selected image detail.
  • a horizontal arm 36 is attached approximately at the level of the deflection roller 32 a, at the end of which a further deflection roller 37 is mounted.
  • pivot levers 38 are rotatably mounted on the side walls of the feed mechanism 33 and carry a pivot guide roller 39 at their outer end.
  • the pivot levers 38 are shown in FIG. 2 in their lower end position, in which they are secured by a locking lever 40 which is also rotatably mounted on the side wall of the feed mechanism 33.
  • the swivel levers 38 can be swiveled by approximately 150 ° into an upper end position by a preferably pneumatic swivel device, not shown, after swiveling the locking lever 40 away (see also FIGS. 3 to 5).
  • the printing material web 31 is guided downward in this area during operation of the printing machine from the last deflecting roller 32a, wraps around the swivel guide roller 39 from below and is then guided upward again via the deflecting roller 37.
  • the swivel lever roller 39 forms in operation between the deflection rollers 32 a and 37 a loop and thus serves in connection with this as a web storage element.
  • the printing material web 31 is continued so that it runs horizontally onto the inlet gap between two blanket cylinders 42 and 43 of a printing unit 44 designed as an impression unit.
  • the printing unit 44 comprises two printing units arranged essentially vertically one above the other, the blanket cylinders 42, 43 of which can be adjusted to a common impression cylinder 41 arranged laterally thereto.
  • the lower printing unit is formed by the blanket cylinder 42, a plate cylinder 45 that can be set on it, and an inking and dampening unit (not described in more detail).
  • the upper printing unit is formed by the blanket cylinder 43, a plate cylinder 46 which can be adjusted thereon, and an inking and dampening unit (not described in more detail).
  • the printing material web 31 runs after passing the printing gap between the blanket cylinders 42, 43 via the impression cylinder 41 used only as a paper guide roller in this type of printing and from there without contact and essentially horizontally to a subsequent printing unit, not shown.
  • a vertical guide 52 is provided in the free space between the feed mechanism 33 and the first printing unit 44, at least at the level of a side wall.
  • the guide 52 is arranged in an advantageous embodiment - as already described in the first embodiment and shown in Fig. 6 - only on the drive side of the printing press, so that the space between the feed mechanism 33 and the first printing unit 44 remains freely accessible from the operating side.
  • Two path displacement elements 53, 56 can be moved along the guide 52, for which their arrangement and design are analogous what has already been said above regarding the web displacement elements 23, 26 of the first exemplary embodiment applies.
  • the inlet gap between the blanket cylinders 42, 43 is protected by an upper and a lower protective screen 57 and 58, both of which are brought close to the printing material web 31.
  • the printing material web 31 is guided contact-free between the upper web displacement element 53 and the lower web displacement element 56 when the printing unit 44 is used in face and back printing, both of which are locked in a middle position on the guide 52. If, for example, a printing plate on the plate cylinder 45 of the lower printing unit is now to be changed, the printing material web 31 can be shifted in the following manner and access can thereby be made free.
  • the locking lever 40 is raised.
  • the pivot levers 38 are then pivoted into their upper position.
  • the swivel guide roller 39 releases the loop of the printing material web 31 previously held taut during operation.
  • the printing material web 31 is now without tension and lies on the lower web displacement element 56.
  • both web displacement elements 53 and 56 have been moved along the guide 52 into an upper position and locked there.
  • the printing material web 31 is carried along by the lower web displacement element 56, the web length previously stored in the loop tightened by the swivel guide roller 39 being used when the web is raised.
  • the lower protective screen 58 is additionally pivoted upwards.
  • the two web displacement elements 53 and 56 - starting from the position shown in FIG. 3, are more relaxed Printing material web 31 - move into a lower position and engage there.
  • the upper web displacement element 53 is supported at least on the operating side by means of support elements 59 attached to its underside on a longitudinal spar of the printing press or directly on its foundation. As a result, the top of the web displacement element 53 is accessible. Since the printing material web runs underneath it and at the same time the upper protective screen 57 has been pivoted downwards, access to the upper printing unit is possible without hindrance.
  • the printing unit 44 already known from FIGS. 2 to 5 is used as an impression mechanism for flying plate changes.
  • a printing material web 31 'coming from the feed mechanism 33 is guided downwards from the last deflection roller 32a; it is guided around under the pivot guide roller 39 when the pivot lever 38 is in the lower position. It is then passed without contact between the two web displacement elements 53, 56 in the lowered position and under the printing unit 44 to the other side thereof.
  • the back up there printing substrate web 31 ' is guided around the impression cylinder 41 so that it can be printed alternately in one color or at the same time in two colors by the blanket cylinders 42 and 43 of the lower or upper printing unit.
  • the swivel guide roller 39 as a paper guide roller and Web guidance below the web displacement element 56, which is located in the lower position and can thus be walked on, in this operating mode, free access to both printing units for conversion or maintenance work - in particular a plate change - is possible at any time.
  • a web storage element not only the arrangement described above of swivel guide roller and adjacent deflection rollers is suitable, but in principle any device in which a certain web length is stored, which is partially released by moving the guide elements used towards one another.
  • An example is the well-known web storage system used between the reel changer and the feed mechanism to keep the web speed constant when changing reels (see Oskar Frei, reel offset, Frankfurt am Main 1979, page 35).
  • the web displacement elements are moved when the cylinders holding the print image are parked.
  • the main drive on the other hand, can also be in an acceleration or deceleration phase.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Replacement Of Web Rolls (AREA)
EP90103220A 1989-02-22 1990-02-20 Dispositif pour changer la position d'une bande destinée à être imprimée Expired - Lifetime EP0384385B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3905400 1989-02-22
DE3905400A DE3905400A1 (de) 1989-02-22 1989-02-22 Vorrichtung zur veraenderung der bahnlage einer bedruckstoffbahn

Publications (3)

Publication Number Publication Date
EP0384385A2 true EP0384385A2 (fr) 1990-08-29
EP0384385A3 EP0384385A3 (fr) 1991-04-03
EP0384385B1 EP0384385B1 (fr) 1993-10-20

Family

ID=6374650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90103220A Expired - Lifetime EP0384385B1 (fr) 1989-02-22 1990-02-20 Dispositif pour changer la position d'une bande destinée à être imprimée

Country Status (4)

Country Link
US (1) US5003889A (fr)
EP (1) EP0384385B1 (fr)
JP (1) JP2839622B2 (fr)
DE (2) DE3905400A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933209A2 (fr) * 1998-01-30 1999-08-04 Heidelberger Druckmaschinen Aktiengesellschaft Suspension règlable pour un carter de sécurité d'un élément d'impression
EP1153744A1 (fr) * 2000-05-11 2001-11-14 Komori Corporation Empêcher la casse de la bande dans une presse rotative
WO2012123012A1 (fr) * 2011-03-11 2012-09-20 Hewlett-Packard Indigo B. V. Amortisseurs convertibles pour presses à bobines

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0657578B2 (ja) * 1990-12-13 1994-08-03 株式会社東京機械製作所 紙通し装置
DE4441142C2 (de) * 1994-11-18 1999-09-30 Koenig & Bauer Ag Zweirichtungsschwenkrahmen einer Papierrollenwechseleinrichtung
DE19548819B4 (de) * 1995-12-27 2004-01-29 Koenig & Bauer Ag Druckwerk
US5806746A (en) * 1996-10-18 1998-09-15 Pitney Bowes Inc. Method and apparatus for guiding webs in a web handling system
DE19742560A1 (de) * 1997-09-26 1999-04-01 Roland Man Druckmasch Vorrichtung zur Veränderung der Bahnlage einer Bedruckstoffbahn
DE29801068U1 (de) * 1998-01-23 1998-03-19 Goebel Gmbh Maschf Bahnführung
JP2001072295A (ja) * 1999-08-31 2001-03-21 Miyakoshi Printing Machinery Co Ltd 用紙のカール防止装置
DE10149829B4 (de) * 2001-10-09 2005-12-22 Man Roland Druckmaschinen Ag Vorrichtung zur Veränderung der Bahnlage einer Bedruckstoffbahn
US7516698B2 (en) * 2005-03-30 2009-04-14 Goss International Americasn, Inc. Web offset printing press with autoplating
EP1863638B1 (fr) 2005-03-30 2018-09-12 Goss International Americas, Inc. Presse a imprimer offset sur papier sans fin pourvue d'une lame plieuse articulee
US7819057B2 (en) * 2005-03-30 2010-10-26 Goss International Americas, Inc. Print unit having blanket cylinder throw-off bearer surfaces
CN101631679B (zh) * 2005-03-30 2011-12-07 高斯国际美洲公司 悬臂式胶印滚筒提升机构
WO2006110539A2 (fr) * 2005-04-11 2006-10-19 Goss International Americas, Inc. Unite d'impression a entrainement a moteur unique permettant de fixer automatiquement une plaque
FR2895305B1 (fr) * 2005-12-27 2009-04-17 Goss Int Montataire Sa Presse d'impression a engagement de bande ameliore et procede d'engagement de bande correspondant.
JP7271992B2 (ja) * 2019-02-18 2023-05-12 コニカミノルタ株式会社 プリンタ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1016340A (fr) * 1950-04-15 1952-11-07 Coupeuse à papier
DE2741596A1 (de) * 1976-09-20 1978-03-23 Wifag Maschf Papierfuehrung zu rotationsdruckmaschinen
FR2505734A1 (fr) * 1981-05-15 1982-11-19 Roland Man Druckmasch Presse rotative a bobines
GB2122945A (en) * 1982-07-07 1984-01-25 Roland Man Druckmasch Offset perfecting printing
FR2575449A1 (fr) * 1984-12-27 1986-07-04 Colgate Palmolive Co Dispositif de detection et de reglage de l'allongement dans une matiere en film

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2932087C2 (de) * 1979-08-08 1985-10-24 Koenig & Bauer AG, 8700 Würzburg Verlegbare Papierführung in Rollenrotationsdruckmaschinen
DE3034670C2 (de) * 1980-09-13 1983-02-24 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Papierführung für eine Rollen-Rotationsdruckmaschine
DE3045051A1 (de) * 1980-11-29 1982-06-09 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Druckwerk fuer eine rollen-rotationsdruckmaschine
DE3104562A1 (de) * 1981-02-10 1982-09-02 Koenig & Bauer AG, 8700 Würzburg "vorrichtung zum fuehren einer papierbahn in einer druckeinheit einer rollenrotationsdruckmaschine"

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1016340A (fr) * 1950-04-15 1952-11-07 Coupeuse à papier
DE2741596A1 (de) * 1976-09-20 1978-03-23 Wifag Maschf Papierfuehrung zu rotationsdruckmaschinen
FR2505734A1 (fr) * 1981-05-15 1982-11-19 Roland Man Druckmasch Presse rotative a bobines
GB2122945A (en) * 1982-07-07 1984-01-25 Roland Man Druckmasch Offset perfecting printing
FR2575449A1 (fr) * 1984-12-27 1986-07-04 Colgate Palmolive Co Dispositif de detection et de reglage de l'allongement dans une matiere en film

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933209A2 (fr) * 1998-01-30 1999-08-04 Heidelberger Druckmaschinen Aktiengesellschaft Suspension règlable pour un carter de sécurité d'un élément d'impression
EP0933209A3 (fr) * 1998-01-30 2000-03-22 Heidelberger Druckmaschinen Aktiengesellschaft Suspension règlable pour un carter de sécurité d'un élément d'impression
US6142072A (en) * 1998-01-30 2000-11-07 Heidelberger Druckmaschinen Ag Adjustable suspension for a printing unit guard
DE19803726B4 (de) * 1998-01-30 2007-12-27 Heidelberger Druckmaschinen Ag Druckwerk mit einem Druckwerksschutz und einer verstellbaren Aufhängung für den Druckwerksschutz
EP1153744A1 (fr) * 2000-05-11 2001-11-14 Komori Corporation Empêcher la casse de la bande dans une presse rotative
US6662721B2 (en) 2000-05-11 2003-12-16 Komori Corporation Rotary press
WO2012123012A1 (fr) * 2011-03-11 2012-09-20 Hewlett-Packard Indigo B. V. Amortisseurs convertibles pour presses à bobines
US9180655B2 (en) 2011-03-11 2015-11-10 Hewlett-Packard Indigo B.V. Convertible buffers for web presses
US9469095B2 (en) 2011-03-11 2016-10-18 Hewlett-Packard Indigo B.V. Convertible buffers for web presses

Also Published As

Publication number Publication date
JPH02251449A (ja) 1990-10-09
JP2839622B2 (ja) 1998-12-16
DE59003105D1 (de) 1993-11-25
EP0384385A3 (fr) 1991-04-03
DE3905400C2 (fr) 1992-05-27
EP0384385B1 (fr) 1993-10-20
DE3905400A1 (de) 1990-08-23
US5003889A (en) 1991-04-02

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