EP0388757A1 - Drückgerät in einem Apparat zum Reinigen des Gummituchzylinders einer Druckmaschine - Google Patents

Drückgerät in einem Apparat zum Reinigen des Gummituchzylinders einer Druckmaschine Download PDF

Info

Publication number
EP0388757A1
EP0388757A1 EP90104696A EP90104696A EP0388757A1 EP 0388757 A1 EP0388757 A1 EP 0388757A1 EP 90104696 A EP90104696 A EP 90104696A EP 90104696 A EP90104696 A EP 90104696A EP 0388757 A1 EP0388757 A1 EP 0388757A1
Authority
EP
European Patent Office
Prior art keywords
pressing device
cylinder
web
sheet
beads
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Withdrawn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
EP90104696A
Other languages
English (en)
French (fr)
Inventor
Riccardo Fumagalli
Angelo Quaglia
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.)
Elettra Srl
Original Assignee
Elettra Srl
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 Elettra Srl filed Critical Elettra Srl
Publication of EP0388757A1 publication Critical patent/EP0388757A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices
    • B41F35/06—Cleaning arrangements or devices for offset cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/10—Cleaning characterised by the methods or devices
    • B41P2235/20—Wiping devices
    • B41P2235/24—Wiping devices using rolls of cleaning cloth
    • B41P2235/246—Pressing the cleaning cloth against the cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2235/00—Cleaning
    • B41P2235/30—Recovering used solvents or residues
    • B41P2235/31—Recovering used solvents or residues by filtering

Definitions

  • the invention relates to those apparatus which are used for a mechanized cleaning of rubber blanket cylinders in offset printing machines, and relates particularly to an ap­paratus comprising a pressing device arranged parallel to the rubber blanket cylinder, which is at least of a same length as this cylinder, with a continuous web of woven or not woven material being lead thereover, which web is deliv­ered from a supply roll, and has its opposite end connected with a take-up roll which is driven in rotation by suitable means.
  • the pressing device is normally arranged in such a position that the web will not interfere with this cylinder, so that the same is allowed to freely transfer the ink to the printing cylinder.
  • the pressing device will cause the web that is lead thereover, to interfere with the said cylinder, and will properly press the same, so as to ensure the most uniformly distributed contact possible of the web over the entire length of this cylinder, while the said web is being wetted with a solvent, and is being gradually transferred from the supply roll to the take-up roll, so that clean web portions will be always acted upon thereby.
  • the cylinder to be cleaned is kept rotating at the proper speed, and its direction of rotation is contrary to the di­rection in which the web gradually removing the stain is ad­vanced, the said web being no more wetted with solvent in the last part of the cycle, whereby to promote a substantial drying of this cylinder.
  • the pressing devices used in the apparatus of known type do not solve the following problems of:
  • the invention solves these and other problems by provid­ing a pressing device for a cleaning apparatus of the afore­mentioned type, which is fitted with a rubber sheet that differently from the known art, is not deformed by a pres­sure fluid, but is deformed by the pushing action being app­lied thereon by a plurality of fluid-pressure operated cyl­inder-and-piston units closely arranged in an equispaced, side-by-side aligned relation, which are such as to act upon the pressing device throughout its length.
  • At least one suitably thick steel strip that distributes the pressure along the length and across the width of the pressing device, and there are preferably interposed at least two armored rubber hoses, or equivalent beads, arranged side-by-side and placed between the said strip and the rubber sheet, in order to improve the elas­tic/yieldable properties of the pressing device, and to lo­calize the pushing action of the pressing device on two near parallel areas.
  • the pressing device of the in­vention comprises a body 1 which is suitably longer than the said cylinder R, is arranged parallel thereto, at a prede­termined suitable distance therefrom (see hereinafter), and is formed by a pair of profiled, parallel longitudinal mem­bers 101, 201 which by their ends are secured by means of screws 2, to plates 3 which in turn are provided with bores 4 for securing them by means of screws, to the side frames or shoulders of a printing machine.
  • slots may be provided for allowing the body 1 to be po­sitioned in an as much as possible parallel and trued rela­tion with the axis of cylinder R.
  • the longitudinal members 101, 201 have their inward sides so profiled that a first parallelepipedal through chamber 5 is thus delimited, and a further parallelepipedal chamber 6 is delimited thereover, which is less high, but is wider than the lower chamber 5.
  • the bottom side of chamber 5 is closed throughout its length by a plate 7 which by means of screws (not shown) is secured to the longitudinal members 101, 201.
  • Single-acting or double-acting, fluid-pressure operated, equal, small cylin­der-and-piston units 9 are secured by their bodies, by means of screws 8, to the said plate 7, and are housed in chamber 5, and are mutually connected in parallel, such as by means of ducts formed in the said plate 7, and/or in the longitudinal members 101, 201.
  • the units 9 have the project­ ing end of their stems directed toward the chamber 6 and, as much as possible, radially to the cylinder R to be cleaned.
  • the said units 9 are set in an equispaced relation, at a suitable distance from each other.
  • piston-and-cylin­der units 9 are, for example, used for acting upon a 1200 mm long cylinder R, which are symmetrically arranged relative to the said cylinder, and are equispaced by a distance of 80 mm from each other, according to the example shown in Figure 3.
  • the longitu­dinal members 101, 201 forming the same are transversely interconnected by spacer elements 10 arranged at a same dis­tance from each other, and secured to the said longitudinal members by means of screws 11, 111.
  • Steel washers 13 are each secured by means of a screw 12 on to the stem of each unit 9, and perform a stem lengthen­ing function, and especially the function of suitably widen­ing the stems, so as to have a better distribution of the pressure as applied by the said stems on the overlying ele­ment that engages the chamber 6 substantially over its whole dimension in plan view, and that consists of a steel strip 14 provided with equispaced bores 15 along its center line, through which the heads of screws 12, which also prevent the said strip from being undesirably displaced in the longitu­dinal direction, are passed with a sufficient play.
  • the diameter of the stems of units 9 is in the order of 12mm, and a washer 13 having a diameter of 3 cm and a thickness of 4mm, is secured on to the said stems.
  • the strip 14 is 6 cm wide and about 2mm thick.
  • Two equally sized hoses 16, 116 are housed in chamber 6 and extend throughout the length thereof, and the said hoses bear both against the said strip 14, contact each other, and contact the sidewalls of the said chamber 6, or are received therein with a small side play, and protrude from the top of this chamber by a proper amount.
  • Good results have been at­tained, for example, by making the elements 16, 116 with lengths of hoses for high pressure hydraulic circuits, with rubber hoses internally armored with steel, and/or with any like suitable material.
  • These hoses are characterized by a considerable elastic memory, and by a yieldability which is fit for the purpose of the invention.
  • the said hoses have an outside diameter of, for example, 3 cm. It is however un­derstood that suitable elastic/yieldable beads may be used in place of the said hoses.
  • the hoses 16, 116 are held in chamber 6 by plates 3 that close the said chamber at both opposite ends.
  • the top end of the longitudinal members 101, 201 is suitably rounded at 17, 117, so that on the said longitudinal members there can be laid, throughout its length, a suitably thick sheet 18 of elastic material, preferably of natural rubber, which by means of fastening platelets 20, 120 and screws, is fastened at 19, 119 by its longitudinal side edges to the suitably undercut side por­tions of the said longitudinal members, the whole arrange­ ment being conceivable and easily achievable by those skill­ed in the art.
  • reinforcing members of metal may be respectively incorporated in the longitudinal edges of sheet 18, whereby these edges are fastened to the external sides of body 1 in a simpler and firmer manner.
  • the sheet 18 has been, for example, made from an India rubber sheet of a thickness of about 5 mm.
  • the sheet 18 bears on the hoses 16-116, and when the de­vice is in its rest condition, as shown in Figure 1, the outward face of said sheet is at a distance from the cylin­der R of about 5 to 10 mm.
  • the web 21 is lead over the sheet 18, and is supplied from a supply roll 22 that is removably fitted on friction supports associated with the plates 3, and is connected with a take-up roll 23 that upon control is driven in rotation by suitable means for winding up the said sheet.
  • a bar 24 pro­vided upstream of the pressing device and arranged parallel thereto, is attached to plates 3 and is fitted with a plura­lity of nozzles 25 directed toward the region at which the web 21 is lead over the sheet 18, and is connected to a source for delivering any suitable detergent liquid under pressure.
  • the web 21 Downstream of the pressing device, before the web 21 being wound up on the take-up roll 23, the web 21 is caused to slide on the outer faces of a vessel 26, with the ends thereof being secured to plates 3, also for a stiffen­ing function.
  • the said vessel is so positioned and sized that any drops of liquid which during the operation of the apparatus may drop down from the pressing device, are coll­ected therein, and the vessel bottom is formed with holes 27, through which the collected liquid is brought back on to the web in a uniformly dispersed manner.
  • the pressing device By relieving the pressure from cylinders 9, or by feed­ing them so as to have their stems retracted, according to whether the said cylinders be single-acting or double-acting cylinders, the pressing device is returned into its retract­ed position shown in Figure 1, with the web 21 away from the cylinder R, that is thus allowed to resume its operative condition.
  • the body 1 may be a one-piece body. Only one, or three or more hoses may be used in place of the two hoses 16, 116.
  • the surface of sheet 18 may be smooth, or the same may be formed, for example, with small reliefs in a slanting fish­bone arrangement, so as to ensure the transversal extension of web 21, and also in order to have a better adaptation of this web to the surface of the blanket cylinder to be clean­ed.
  • the cylinder-and-piston units 9 instead of having their stems aligned along only one row, may be aligned along two or more parallel rows.
EP90104696A 1989-03-20 1990-03-13 Drückgerät in einem Apparat zum Reinigen des Gummituchzylinders einer Druckmaschine Withdrawn EP0388757A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT338989 1989-03-20
IT338989 1989-03-20

Publications (1)

Publication Number Publication Date
EP0388757A1 true EP0388757A1 (de) 1990-09-26

Family

ID=11106205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90104696A Withdrawn EP0388757A1 (de) 1989-03-20 1990-03-13 Drückgerät in einem Apparat zum Reinigen des Gummituchzylinders einer Druckmaschine

Country Status (1)

Country Link
EP (1) EP0388757A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005005151A2 (en) * 2003-07-11 2005-01-20 Finelettra International S.A. Equipment for cleaning rubber cylinders of continuous printing machines
DE102004062113A1 (de) * 2004-12-23 2006-07-13 Koenig & Bauer Ag Reinigungseinrichtung
DE102004062115A1 (de) * 2004-12-23 2006-07-13 Koenig & Bauer Ag Reinigungseinrichtung
EP2123457A1 (de) * 2007-03-13 2009-11-25 Toyo Seikan Kaisya, Ltd. Verfahren und vorrichtung zum einschliessen von tinte
DE102009002598A1 (de) 2009-04-23 2010-11-04 Koenig & Bauer Aktiengesellschaft Verfahren zum Auflegen mindestens einer Gummitucheinheit auf einem Übertragungszylinder und Vorrichtung in einer Druckmaschine
CN112495038A (zh) * 2020-11-10 2021-03-16 天长市大发化纤有限公司 一种带固液分离机构的涤纶短纤维生产线用固体废料清理机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211147A (en) * 1977-06-30 1980-07-08 International Business Machines Corporation Servo-control valve for a linear hydraulic motor
EP0180134A2 (de) * 1984-10-29 1986-05-07 Harris Graphics Corporation Farbkasten und geteiltes Farbmesser
EP0291745A2 (de) * 1987-05-19 1988-11-23 Baldwin-Japan Ltd. Apparat zum Reinigen eines Druckzylinders
EP0299193A2 (de) * 1987-07-10 1989-01-18 Baldwin-Japan Ltd. Reinigungsvorrichtung für eine Druckmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211147A (en) * 1977-06-30 1980-07-08 International Business Machines Corporation Servo-control valve for a linear hydraulic motor
EP0180134A2 (de) * 1984-10-29 1986-05-07 Harris Graphics Corporation Farbkasten und geteiltes Farbmesser
EP0291745A2 (de) * 1987-05-19 1988-11-23 Baldwin-Japan Ltd. Apparat zum Reinigen eines Druckzylinders
EP0299193A2 (de) * 1987-07-10 1989-01-18 Baldwin-Japan Ltd. Reinigungsvorrichtung für eine Druckmaschine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005005151A2 (en) * 2003-07-11 2005-01-20 Finelettra International S.A. Equipment for cleaning rubber cylinders of continuous printing machines
WO2005005151A3 (en) * 2003-07-11 2005-06-16 Finelettra Internat S A Equipment for cleaning rubber cylinders of continuous printing machines
CN100421939C (zh) * 2003-07-11 2008-10-01 菲内勒特拉国际股份有限公司 用于清洁连续印刷机的橡皮滚筒的设备
DE102004062113A1 (de) * 2004-12-23 2006-07-13 Koenig & Bauer Ag Reinigungseinrichtung
DE102004062115A1 (de) * 2004-12-23 2006-07-13 Koenig & Bauer Ag Reinigungseinrichtung
DE102004062115B4 (de) * 2004-12-23 2014-11-06 Koenig & Bauer Aktiengesellschaft Reinigungseinrichtung
EP2123457A1 (de) * 2007-03-13 2009-11-25 Toyo Seikan Kaisya, Ltd. Verfahren und vorrichtung zum einschliessen von tinte
EP2123457A4 (de) * 2007-03-13 2012-06-27 Toyo Seikan Kaisha Ltd Verfahren und vorrichtung zum einschliessen von tinte
US8635954B2 (en) 2007-03-13 2014-01-28 Toyo Seikan Kaisha, Ltd. Ink trap method and an ink trap apparatus
DE102009002598A1 (de) 2009-04-23 2010-11-04 Koenig & Bauer Aktiengesellschaft Verfahren zum Auflegen mindestens einer Gummitucheinheit auf einem Übertragungszylinder und Vorrichtung in einer Druckmaschine
DE102009002598B4 (de) * 2009-04-23 2013-04-11 Koenig & Bauer Aktiengesellschaft Verfahren zum Auflegen mindestens einer Gummitucheinheit auf einen Übertragungszylinder
CN112495038A (zh) * 2020-11-10 2021-03-16 天长市大发化纤有限公司 一种带固液分离机构的涤纶短纤维生产线用固体废料清理机构

Similar Documents

Publication Publication Date Title
US5515782A (en) Cylinder cleaning apparatus for printing press
JP4246225B2 (ja) インキ撥液性の可撓性ジャケット
US7004220B1 (en) Transfer printing machine
EP0388757A1 (de) Drückgerät in einem Apparat zum Reinigen des Gummituchzylinders einer Druckmaschine
EP0293586A2 (de) Geteilter Farbkasten für eine Flexodruckmaschine
US4972780A (en) Printing press blanket cleaner
US20030159606A1 (en) Printing machine with block-cleaning device
DD299284A5 (de) Reinigungssystem fuer druckpressen, die mit offset-blaettern gespeist werden
EP2502746B1 (de) Vorrichtung und Verfahren zur schnellen Reinigung einer zentralen Trommel in Flexodruckmaschinen
CA2219252C (en) Paper web capture device
WO1996004140A1 (en) Doctor blade clamping assembly for a printing press
EP0613421B1 (de) Verfahren und vorrichtung zum automatischen reinigen von zylindern, insbesondere gummituchzylindern und gegendruckzylindern
JPH0419942B2 (de)
IL36853A (en) Apparatus and method for cleaning rotating cylindrical surfaces
DE3844770C2 (de) Verfahren und Vorrichtung zum Verhindern der Verschmutzung einer Bedruckstoffbahn bei einer Offset-Rotationsdruckmaschine
EP0936068A1 (de) Vorrichtung zum Reinigen von Zylindern
EP0673769B1 (de) Wickelstand für Druckmaschinen-Waschtücher
US2847935A (en) Washup attachment for printing presses and the like
EP0548501B1 (de) Vorrichtung zum Reiningen von Flexodruckzylindern
EP0673768B1 (de) Wickelstand für Druckmaschinen-Waschtücher
EP1187721B1 (de) Gummituchwaschvorrichtung
US10065410B2 (en) Apparatus for cleaning surfaces
EP1106353B1 (de) Verfahren und Vorrichtung zur Entstaubung von Bedruckstoff
JPS6331762Y2 (de)
EP1149696B1 (de) Offsetdruckwerk für eine Druckmaschine

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR LI LU NL SE

17P Request for examination filed

Effective date: 19901207

17Q First examination report despatched

Effective date: 19920804

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19930928