EP0225455A2 - Dispositif de sortie pour rotative à feuilles - Google Patents

Dispositif de sortie pour rotative à feuilles Download PDF

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Publication number
EP0225455A2
EP0225455A2 EP86114659A EP86114659A EP0225455A2 EP 0225455 A2 EP0225455 A2 EP 0225455A2 EP 86114659 A EP86114659 A EP 86114659A EP 86114659 A EP86114659 A EP 86114659A EP 0225455 A2 EP0225455 A2 EP 0225455A2
Authority
EP
European Patent Office
Prior art keywords
roller
sheet
speed
delivery device
suction
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
EP86114659A
Other languages
German (de)
English (en)
Other versions
EP0225455B1 (fr
EP0225455A3 (en
Inventor
Albrecht Josef Germann
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
Publication of EP0225455A2 publication Critical patent/EP0225455A2/fr
Publication of EP0225455A3 publication Critical patent/EP0225455A3/de
Application granted granted Critical
Publication of EP0225455B1 publication Critical patent/EP0225455B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68—Reducing the speed of articles as they advance
    • B65H29/683—Slowing-down from chain delivery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means

Definitions

  • the invention relates to a suction roll used as a sheet brake according to the preamble of patent claim 1.
  • Bow brakes are e.g. made known by DE-PS 721 545. It consists of a plurality of absorbent bodies, the circumferential speed of which when the sheet is taken over is approximately the same as the conveying speed of the gripper chain and decreases continuously from the absorbent body until the moment the sheet end is left.
  • the invention has for its object to provide a sheet brake in a sheet delivery device of a sheet-fed rotary printing press, which can also be used in a perfecting sheet-fed rotary printing press without the sheet brake smearing the freshly printed page.
  • a suction roll 1 is rotatably mounted in a known manner.
  • the suction roll 1 is driven by means of a speed-controllable direct current motor 2.
  • the suction roll 1 has an ink-repellent, for example, chrome-plated outer surface 3.
  • the suction roll 1 is equipped with suction holes 4, which penetrate the suction roll 1 radially.
  • the suction holes 4 are arranged starting from a center of the suction roll 1 on a right-hand or left-hand screw line. Beneath the suction roller 1, a suction bar 5, which can be acted upon by suction air and sealed against the suction roller 1, is mounted between the side frames.
  • a dampening unit 6 known per se is employed on the suction roller 1, which comprises a dampening unit 7, a chrome-coated ductor roller 8 and a rubber-coated application roller 9.
  • the ductor roller 8 and the application roller 9 are driven by the suction roller 1 via gears (not shown) such that a relative speed is generated between the suction roller 1 and the application roller 9, or the application roller 9 and the ductor roller 8, preferably the peripheral speed of the application roller 9 is smaller than the peripheral speed of the suction roller 1.
  • FIG. 3 shows a sheet delivery device in which a moist wiper belt 11 is pressed onto the suction roller 1 described above by means of a pressure bar 12.
  • the wiper belt 11 is wound on a spool 13 and is gradually pulled past the direction of rotation of the suction roller 1 via a driven winding spool 14.
  • FIG. 4 shows a second variant of the arrangement described in FIG. 3, in which the wiper belt 11 is pulled between the suction roller 1 and the suction bar 5, so that the pressure bar 12 can be omitted.
  • a rotating roller 16 placed against the suction roller 1 with a textile cover 15 e.g. Moltex can be used.
  • the textile cover 15 is preferably moistened in cycles by means of spray nozzles 17.
  • the devices for dampening and cleaning the suction roller 1 described above are each mounted below a sheet guide plate 18 in tabs 19 which are fastened to the sheet guide plate 18.
  • the sheet guide plate 18 is preferably pivotable upwards, so that the devices for dampening and cleaning (6, 11, 16) are easily accessible.
  • a dirt trough 23 is attached to a two-part cross member 21, 22 fixed to the frame.
  • the crossbeam 21, 22 also serves to receive the spray nozzles 17.
  • FIG. 6 shows a speed curve of a peripheral speed v s of the suction roll 1 in a time-speed diagram.
  • a delivery speed v a of the sheets and a speed range v k of the gripper chain speed are shown in the diagram.
  • the speed range v k is limited by a maximum gripper chain speed v k max and a minimum gripper chain speed v k min .
  • a (inclination) denotes a range of the peripheral speed v s of the suction roll 1 in which the suction roll 1 experiences a deceleration.
  • the inclination a is independent of the hook chain speed v k .
  • the peripheral speed v are each s and the design speed v s is equal.
  • P is a gripper opening time.
  • the sheets 24 printed on face and reverse printing are each transported to a stacking table 32 by means of gripper carriages 28 attached to gripper chains 27, the gripper carriages 28 having controllable rows of grippers 29.
  • the suction roll initial speed v s is in each case equal to the gripper chain speed v k .
  • the grippers 29 are opened by means of an adjustable gripper control curve, not shown, which is known per se, before a front edge 33 of the sheets 24 reaches a stop 24 of the stacking table 32.
  • the sheet 24 becomes free and floats up to the stop 34.
  • the suction roller 1 is braked by means of the direct current motor 2 until its peripheral speed v s is equal to the constant design speed v a (eg 10% of the maximum gripper chain speed v k max .
  • the sheets 24 are decelerated to their constant laying speed v a .
  • a thyristor set a tacho generator (setpoint generator) coupled to the main drive of the sheet-fed rotary printing press, a tacho generator (actual setpoint generator) coupled to the direct current motor 2 and electronic setpoint formers are provided to regulate the speed of the DC motor 2.
  • the control described above keeps the peripheral speed v s of the suction roller 1 equal to the gripper chain speed v k . If the grippers 29 open, the speed setpoint becomes the same Current motor 2 from the setpoint generator "tachogenerator" to the setpoint generator “setpoint generator”. In accordance with the impressed target values of the target value generator, the peripheral speed v s of the roller 1 is continuously reduced until it has reached the peripheral speed v a .
  • the suction roller 1 has coupled a tachometer generator as the actual value transmitter.
  • the control device for the direct current motor 2 has a setpoint input unit.
  • the suction roller 1 is accelerated again by the direct current motor 2 until the peripheral speed v s of the suction roller 1 is equal to the speed v k of the gripper chains 27.
  • the roller 1 must have reached the speed v s again before the next sheet 24 arrives at the suction roller 1.
  • the hydrophilic, chrome-plated outer surface 3 of the suction roller 1 is damply cleaned of adhering ink particles by the above-described devices (6, 11, 16), so that no ink particles have a printed underside 36 of the Bow 24 are pulled away.
  • An adjustable gripper control curve makes it possible, depending on the production speed, to open the grippers earlier or later and thus to achieve a constant deceleration of the suction roll 1. Because the gripper opening time P depends on the variable speed speed v k of the gripper chains 27, each corresponding to a production speed range of a sheet-fed rotary printing press, is adjustable, the gripper opening time P is shifted with increasing speed v k so that a longer braking distance is available for braking the sheet 24.
  • FIG. 6 shows a profile of the peripheral speed v s of the suction roll 1 at a maximum speed v k max of the gripper chains 27 and at a minimum speed v k min of the gripper chains 27.
  • the acceleration of the roller 1 increases with increasing production speed, while the deceleration preferably remains the same over the entire production speed range.
  • the holding force exerted by the roller 1 on the sheet 24 can of course also be generated with an electrostatically charged roller 1 instead of suction air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP86114659A 1985-12-05 1986-10-22 Dispositif de sortie pour rotative à feuilles Expired - Lifetime EP0225455B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3543026 1985-12-05
DE3543026A DE3543026C1 (de) 1985-12-05 1985-12-05 Auslegevorrichtung fuer eine Bogenrotationsdruckmaschine

Publications (3)

Publication Number Publication Date
EP0225455A2 true EP0225455A2 (fr) 1987-06-16
EP0225455A3 EP0225455A3 (en) 1988-03-02
EP0225455B1 EP0225455B1 (fr) 1990-01-03

Family

ID=6287719

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86114659A Expired - Lifetime EP0225455B1 (fr) 1985-12-05 1986-10-22 Dispositif de sortie pour rotative à feuilles

Country Status (7)

Country Link
US (1) US4717141A (fr)
EP (1) EP0225455B1 (fr)
JP (1) JPS62153057A (fr)
CS (1) CS270214B2 (fr)
DD (1) DD252590A5 (fr)
DE (2) DE3543026C1 (fr)
SU (1) SU1544183A3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3812678C3 (de) * 1988-04-16 1996-04-11 Heidelberger Druckmasch Ag Vorrichtung zum Reinigen von zylindrischen Mantelflächen in Rotationsdruckmaschinen
DE4220582A1 (de) * 1991-08-16 1993-02-18 Heidelberger Druckmasch Ag Einrichtung zur regelung und/oder steuerung einzelner stellelemente im auslegerbereich einer druckmaschine
US5969274A (en) * 1997-02-25 1999-10-19 Hewlett-Packard Company Alternate method of sensing paper entry
US6354591B1 (en) * 2000-01-19 2002-03-12 Quad/Tech, Inc. Printed product slow down apparatus and method
JP2016074517A (ja) * 2014-10-07 2016-05-12 大日本印刷株式会社 吸引ブレーキ車制御システム、枚葉印刷機
DE102021102597A1 (de) 2021-02-04 2022-08-04 Koenig & Bauer Ag Verfahren zum Betreiben einer Auslage einer bogenverarbeitenden Maschine mit einer Bogenbremse
DE102021115291A1 (de) 2021-06-14 2022-12-15 Koenig & Bauer Ag Verfahren zum Betreiben einer Auslage einer bogenverarbeitenden Maschine mit einer Bogenbremse und Auslage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE721545C (de) * 1940-11-29 1942-06-12 Roland Offsetmaschf Auslegevorrichtung mit einer als Bogenbremse benutzten Saugwalze fuer Druckmaschinen
US3432161A (en) * 1966-10-13 1969-03-11 Lamb Grays Harbor Co Inc Sheet control apparatus
US3730517A (en) * 1971-05-03 1973-05-01 Harris Intertype Corp Sheet conveyor apparatus and method
EP0096276A2 (fr) * 1982-06-03 1983-12-21 Koenig & Bauer Aktiengesellschaft Dispositif de sortie des feuilles pour presses rotatives
DE3331129A1 (de) * 1982-10-01 1984-04-05 VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig Verfahren und vorrichtung zur zufuehrung von feuchtmittel in offsetdruckmaschinen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2969980A (en) * 1958-09-08 1961-01-31 Miehle Goss Dexter Inc Vacuum slow down device for sheet delivery mechanism
US3686771A (en) * 1970-07-23 1972-08-29 Polygraph Leipzig Humidity regulating system for printing machines
DE2348320C3 (de) * 1973-09-26 1978-12-14 Vits-Maschinenbau Gmbh, 4018 Langenfeld Vorrichtung zum stapelweisen Ablegen einzelner gleichlanger Bogen
JPS517423U (fr) * 1974-07-06 1976-01-20
FR2285997A1 (fr) * 1974-09-11 1976-04-23 Moestue Hans Dispositif de nettoyage d'un cylindre d'une machine a imprimer
DE2845932A1 (de) * 1978-10-21 1980-04-24 Heidelberger Druckmasch Ag Kombiniertes feucht-farbwerk fuer offsetdruckwerke
JPS56132353A (en) * 1980-03-22 1981-10-16 Canon Inc Transfer material conveyor
JPS5892565A (ja) * 1981-11-30 1983-06-01 Dainippon Printing Co Ltd インキローラ洗浄装置
JPS60155461A (ja) * 1983-09-29 1985-08-15 Akiyama Insatsuki Seizo Kk 枚葉印刷機における印刷紙排紙機構
DE3418344A1 (de) * 1984-05-17 1985-11-21 Georg Spiess Gmbh, 8906 Gersthofen Vorrichtung zur bildung eines bogenstapels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE721545C (de) * 1940-11-29 1942-06-12 Roland Offsetmaschf Auslegevorrichtung mit einer als Bogenbremse benutzten Saugwalze fuer Druckmaschinen
US3432161A (en) * 1966-10-13 1969-03-11 Lamb Grays Harbor Co Inc Sheet control apparatus
US3730517A (en) * 1971-05-03 1973-05-01 Harris Intertype Corp Sheet conveyor apparatus and method
EP0096276A2 (fr) * 1982-06-03 1983-12-21 Koenig & Bauer Aktiengesellschaft Dispositif de sortie des feuilles pour presses rotatives
DE3331129A1 (de) * 1982-10-01 1984-04-05 VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig Verfahren und vorrichtung zur zufuehrung von feuchtmittel in offsetdruckmaschinen

Also Published As

Publication number Publication date
US4717141A (en) 1988-01-05
CS766786A2 (en) 1989-10-13
DE3543026C1 (de) 1987-04-02
EP0225455B1 (fr) 1990-01-03
DE3667956D1 (de) 1990-02-08
EP0225455A3 (en) 1988-03-02
DD252590A5 (de) 1987-12-23
SU1544183A3 (ru) 1990-02-15
CS270214B2 (en) 1990-06-13
JPS62153057A (ja) 1987-07-08

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