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EP0474971A1 - Dispositif de réglage de la tension de bande dans une machine d'impression rotative - Google Patents

Dispositif de réglage de la tension de bande dans une machine d'impression rotative Download PDF

Info

Publication number
EP0474971A1
EP0474971A1 EP91108619A EP91108619A EP0474971A1 EP 0474971 A1 EP0474971 A1 EP 0474971A1 EP 91108619 A EP91108619 A EP 91108619A EP 91108619 A EP91108619 A EP 91108619A EP 0474971 A1 EP0474971 A1 EP 0474971A1
Authority
EP
European Patent Office
Prior art keywords
rings
ring
web
slots
expansion elements
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.)
Withdrawn
Application number
EP91108619A
Other languages
German (de)
English (en)
Inventor
K.L. Ing. Lindblom
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.)
MAN Miller Druckmaschinen GmbH
Original Assignee
MAN Miller Druckmaschinen GmbH
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 Miller Druckmaschinen GmbH filed Critical MAN Miller Druckmaschinen GmbH
Publication of EP0474971A1 publication Critical patent/EP0474971A1/fr
Withdrawn legal-status Critical Current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
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/11—Details of cross-section or profile
    • B65H2404/112—Means for varying cross-section
    • B65H2404/1121—Means for varying cross-section for changing diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/13—Details of longitudinal profile
    • B65H2404/133—Limited number of active elements on common axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/18—Rollers composed of several layers
    • B65H2404/181—Rollers composed of several layers with cavities or projections at least at one layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/18—Rollers composed of several layers
    • B65H2404/185—Rollers composed of several layers easy deformable

Definitions

  • the invention relates to a device for adjusting the web tension of the continuous web material of a web printing machine, in particular an offset web printing machine, with two rings fastened on a common shaft at a distance from one another, which cooperate with two counter rings, which are also fastened on a common shaft at a distance from one another , wherein at least one of the shafts is driven to rotate and the web material passes in the gaps between the opposing rings.
  • the web tension of the web material of a web printing machine is adjusted.
  • the speed of rotation of the shafts of the device is usually adjusted.
  • the object of the invention is to create an additional parameter for setting the web tension of the continuous web material, with which in particular a fine adjustment of the web tension is possible.
  • the invention is characterized in that slots are provided in the shells consisting of elastic-resilient material of at least one of the ring pairs of one of the shafts, under which expansion elements are arranged.
  • the jacket should consist of spring steel or other suitable elastic-springy material.
  • the inner surfaces of the ring sleeves are conical with an angle opening towards the ends, counter surfaces of the expansion elements with a corresponding conicity abutting on the conical inner surfaces and the expansion elements being axially displaceable.
  • the expansion elements are preferably designed as expansion rings.
  • the spreading elements can be axially displaced by means of set screws or adjusting rings, or else by means of other suitable drives, for example by means of a pneumatic or motor drive.
  • the slots can, for example, run spirally because it is essential that the diameter of the ends of the ring jacket change due to the slots can. However, axial alignment of the slots is preferred.
  • Another important embodiment of the invention is characterized in that the surface of the jacket of the rings has an increased coefficient of friction compared to the prior art. This prevents the continuous web material from sliding relative to the surface of the rings and the control of the web tension is also noticeably more precise.
  • rings 2 are seated on both ends.
  • the rings have coats 3 made of resilient material, preferably spring steel.
  • FIG. 1 shows slots above which extend in the longitudinal direction of the rollers. This is also shown in Fig. 2 above.
  • the minimum diameter of the rings is shown on the left in FIG. 1 and the largest diameter on the right in FIG. 1.
  • spreading rings 5 which are adjustable in the axial direction and whose outer surfaces extend outwards, i.e. to the ends, widen conically.
  • the jacket 3 lies against these conical outer surfaces with a correspondingly conical inner surface 6.
  • Screws 7 or nuts 8 can be provided for adjusting the expansion ring 5 in the axial direction.
  • Return screws 9 are provided for returning the expansion elements (ring 5 or nut 8).
  • the rings change their outer diameter accordingly by an axial adjustment of the expansion elements 5, 8, the adjustment of the diameter and thus the circumference of the rings being very fine. It depends on the degree of taper of the abutting surfaces of the expansion elements and the jacket.
  • the diameters of all four rings 2 are preferably adjusted, but at least those of the upper or lower shaft 1.
  • the paper web runs in the gap 10 between the rings 2, the rings transporting the web material at its unprinted edges.
  • the area of the web material located between the rings is not touched by the rings, so that the fresh pressure present there is not smeared.

Landscapes

  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Rotary Presses (AREA)
EP91108619A 1990-08-18 1991-05-28 Dispositif de réglage de la tension de bande dans une machine d'impression rotative Withdrawn EP0474971A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4026238A DE4026238C1 (fr) 1990-08-18 1990-08-18
DE4026238 1990-08-18

Publications (1)

Publication Number Publication Date
EP0474971A1 true EP0474971A1 (fr) 1992-03-18

Family

ID=6412523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91108619A Withdrawn EP0474971A1 (fr) 1990-08-18 1991-05-28 Dispositif de réglage de la tension de bande dans une machine d'impression rotative

Country Status (4)

Country Link
US (1) US5127323A (fr)
EP (1) EP0474971A1 (fr)
JP (1) JPH04251063A (fr)
DE (1) DE4026238C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0970807A1 (fr) * 1998-07-06 2000-01-12 Heidelberger Druckmaschinen Aktiengesellschaft Rouleau avec un diamètre variable

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE175943T1 (de) * 1995-06-05 1999-02-15 Heidelberger Druckmasch Ag Falzapparatsuperstruktur
US5927197A (en) * 1998-07-09 1999-07-27 Troy Systems, Inc. Tensioner and system for continuous printer sheet advancement
ITRM20080473A1 (it) * 2008-08-29 2010-02-28 Gep Spa Sistema di trascinamento a trattori per la mivimentazione di carta a bassa rigidita'
DE102010046962A1 (de) * 2010-09-29 2012-04-26 Eastman Kodak Co. Transportanordnung für Bedruckstoffe in einer Druckmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2765165A (en) * 1952-07-02 1956-10-02 Harris Seybold Co Web tension control means
GB2081240A (en) * 1980-08-01 1982-02-17 Atomic Energy Authority Uk Silicon Carbide Bodies
US4403721A (en) * 1981-06-05 1983-09-13 Kyoichi Yamashita Variable diameter drum
US4875611A (en) * 1987-12-10 1989-10-24 Xerox Corporation Roll media feed roll system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203345A (en) * 1961-11-08 1965-08-31 Gibbons A Lucile Rotary bag printer
US3537631A (en) * 1968-05-14 1970-11-03 Bell Sound Studios Inc Idler roller
JPS5318780B2 (fr) * 1972-04-26 1978-06-16
US4205770A (en) * 1978-05-15 1980-06-03 Ncr Corporation Selective feeding of record media
JPS5969334A (ja) * 1982-10-05 1984-04-19 Seiko Instr & Electronics Ltd プリンタの紙送り機構
US4961378A (en) * 1987-05-27 1990-10-09 Rockwell International Corporation Anti-wrap up device for web fed printing presses

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2765165A (en) * 1952-07-02 1956-10-02 Harris Seybold Co Web tension control means
GB2081240A (en) * 1980-08-01 1982-02-17 Atomic Energy Authority Uk Silicon Carbide Bodies
US4403721A (en) * 1981-06-05 1983-09-13 Kyoichi Yamashita Variable diameter drum
US4875611A (en) * 1987-12-10 1989-10-24 Xerox Corporation Roll media feed roll system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0970807A1 (fr) * 1998-07-06 2000-01-12 Heidelberger Druckmaschinen Aktiengesellschaft Rouleau avec un diamètre variable

Also Published As

Publication number Publication date
JPH04251063A (ja) 1992-09-07
DE4026238C1 (fr) 1991-12-19
US5127323A (en) 1992-07-07

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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