US20030208854A1 - Method of impregnating, with detergent liquid, fabrics for cleaning high precision rotary cylinders, particularly of printing machines, and the shaft for its implementation - Google Patents

Method of impregnating, with detergent liquid, fabrics for cleaning high precision rotary cylinders, particularly of printing machines, and the shaft for its implementation Download PDF

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Publication number
US20030208854A1
US20030208854A1 US10/419,231 US41923103A US2003208854A1 US 20030208854 A1 US20030208854 A1 US 20030208854A1 US 41923103 A US41923103 A US 41923103A US 2003208854 A1 US2003208854 A1 US 2003208854A1
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US
United States
Prior art keywords
detergent
shaft
fabric
reel
feed
Prior art date
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Abandoned
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US10/419,231
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English (en)
Inventor
Marcello Ghisalberti
Lorenzo Ghisalberti
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.)
T G C Srl
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T G C 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 T G C Srl filed Critical T G C Srl
Assigned to T.G.C. S.R.L. reassignment T.G.C. S.R.L. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GHISALBERTI, LORENZO, GHISALBERTI, MARCELLO
Publication of US20030208854A1 publication Critical patent/US20030208854A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F35/00—Cleaning arrangements or devices

Definitions

  • This invention relates to a method for impregnating, with detergent liquid, fabrics for cleaning high precision rotary cylinders, particularly of printing machines.
  • This invention also relates to a shaft for implementing the method.
  • conventional rotary cylinder cleaning devices which use woven or non-woven fabric, it is known to wet a portion thereof with detergent, after unwinding it from a feed shaft and before making it adhere to the surface of the rotary cylinder to be cleaned.
  • a detergent distribution bar is used usually provided with nozzles facing the fabric and the cylinder to be cleaned.
  • said incrustations can limit and even obstruct passage of the detergent, with serious operative consequences.
  • cleaning the rotary cylinder is pointless as it prevents printing restart or prejudices its quality.
  • Another object of the present invention is to define a method, as aforestated, which ensures uniformity of this detergent impregnation even after relatively prolonged periods of non-utilization.
  • Another object is to define a method, as aforestated, which enables the fabric to be wetted while wound into a reel.
  • Another object is to define a method, as aforestated, which enables the detergent consumption to be optimized.
  • Another object is to define a device for implementing the aforesaid method.
  • FIG. 1 is a schematic horizontal cross-section through a rotary shaft which enables the detergent to be distributed on a reel of fabric by the method of the invention
  • FIG. 2 is a vertical cross-section through a cleaning device for rotary cylinders using a rotary shaft of the type shown in FIG. 1;
  • FIG. 3 is a diagram showing the unit for dispensing and feeding the detergent into the rotary shaft of FIG. 1;
  • FIG. 4 shows a variant of the unit for dispensing and feeding the detergent into the rotary shaft of FIG. 1;
  • FIG. 5 shows a device for winding the fabric onto a rotary shaft provided for impregnating it with detergent in accordance with the method of the invention.
  • a rotary feed shaft 1 performs a double function, namely:
  • the rotary feed shaft 1 consists of a tube 2 of length such as to be able to wind a reel of fabric thereon and provided with a series of suitably profiled holes or apertures 3 . These profiled apertures 3 are distributed on the surface of the tube 3 in substantially uniform manner.
  • the hole provided is a completely axial hole 6 passing through the hub 4 .
  • the detergent flows through said hole 6 and into the cavity 7 in such quantity and pressure that during operation it is able to emerge radially and centrifugally by passing through the profiled apertures 3 , to uniformly impregnate the reel of fabric 11 wound on the outside of the tube 2 .
  • This tube enables better mixing of the detergent liquid and better distribution thereof in the fabric in both the axial and radial directions.
  • a radial hole 10 in the hub 5 disposed perpendicular to the axis of the rotary feed shaft 1 and connected via an axial hole (similar to the hole 6 ) to the cavity 7 of the tube 2 .
  • the operator can manually feed the detergent into the feed shaft 1 , using a usual portable feed and dispensing unit for the detergent, or using a temporary floating connection.
  • the cavity 7 of the tube 2 acts as a detergent reservoir that can supplement or replace the already described automatic device, by using the central axial hole 6 .
  • the rotary feed shaft 1 on which the reel of fabric 11 has been wound, is rotatably and removably supported between the lateral shoulders of the cleaning device 12 , which is installed in the printing machine parallel to and in front of the rotary cylinder to be cleaned, such as that described in Italian patent 1306450, of which a variant is shown in FIG. 2 by way of example.
  • a detergent dispensing and feed unit cooperates with the feed shaft 1 to transfer thereto the detergent which, if necessary, is diluted with water.
  • the detergent and water are withdrawn from two collection tanks 19 , 20 , or directly from a drum of detergent and from the water main. Said tanks 19 and 20 , if present, are provided with level controls to prevent operation of the feed system if detergent and/or water are absent.
  • the tanks 19 and 20 are connected to pumps 23 and 24 which, controlled by solenoid valves 25 and 26 , feed the optimum wash solution into the interior of the rotary feed shaft 1 at suitable pressure (adjustable by usual means).
  • solenoid valves 27 and 28 operated at determined time intervals by the electronic control unit of the system, enable the relative quantities of detergent and water to be regulated. This enables the quantity and quality of the wash solution to be defined.
  • a single pump 29 could be provided which, under the control of the solenoid valve 30 , feeds both detergent and dilution water into the interior of the rotary feed shaft 1 . If need be, these liquids can be withdrawn from a collection tank 31 , where they arrive from respective collection tanks 34 and 35 , pre-dispensed by valves 32 and 33 , as shown in FIG. 4. In this manner the feed shaft 1 totally and uniformly distribute the predetermined detergent quantity, previously conveyed to its interior, into the reel of fabric 11 .
  • the method of the invention enables the said uniform impregnation because, even with non-automatic operation, the presence of the profiled apertures 3 enables the liquid contained in the cavity 7 to always wet the lowerly situated region of the fabric reel. This occurs in any angular position acquired following the unwinding of that linear portion of fabric required by the specific cleaning operation. Consequently, if necessary, the method enables the detergent to be fed more than once at variable time intervals into the rotary feed shaft 1 , determining the quantity on the basis of the diameter assumed by the reel of fabric 11 wound on it.
  • a conventional electromechanical or electronic sensor measures the diameter of the reel and feeds a signal to the electronic control unit, which suitably varies the opening time of the dispensing valves 27 and 28 .
  • the detergent is fed several times in respectively increasing, constant or decreasing quantities, from the beginning to the end of the reel of fabric 11 , depending on whether the variation of the detergent distribution with time prevails or does not prevail over that of the residual quantity of fabric to be wetted.
  • the sensor that measures the reel diameter is used to verify the availability of a new reel of fabric 11 and, vice versa, of a reel gradually being consumed or completely depleted.
  • the rotary feed shaft 1 is at rest, or made to rotate intermittently (at suitable speed and time intervals), directly or indirectly, during the detergent feed.
  • one or more reels of fabric 11 are wetted before they are located in one or more cleaning devices 12 .
  • the rotary feed shaft 1 is installed in a separate device 36 by which the fabric is wound into reels 11 on the rotary feed shaft 1 and is impregnated with detergent.
  • the rotary feed shaft 1 is made to rotate continuously, or intermittently (at suitable speed and time intervals), for the following purpose: to wind thereon a portion of a large-diameter reel of fabric 38 supported by a shaft 37 ; or to wind thereon all the fabric of a reel 39 of the take-up shaft 15 , in order to reuse it.
  • the aforedescribed dispensing and feed unit feeds the detergent into the interior of the rotary feed shaft 1 , which distributes it into the reel of fabric 11 as soon as this latter has been completed following the unwinding of the fabric from the reel 38 .
  • Another possibility offered by the method is to feed the detergent while the reel 11 is being formed on the shaft 1 , i.e. while it is rotating, the centrifugal force then facilitating distribution of the detergent.
  • the rotary feed shaft 1 can be removed from the device 36 after cutting the fabric by a usual sliding blade cutter device 40 .
  • the method of the invention results in a drastic reduction in the consumption of evaporated detergent, and a large reduction in the emission of volatile organic compounds (V.O.C).
  • a further advantage is that the quantity of detergent used can be accurately adapted to the quantity and/or quality of the fabric used.
  • a further advantage is that the cleaning operations effected are much quicker and effective, as the detergent quantity matches the specific conditions.

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  • Treatment Of Fiber Materials (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
US10/419,231 2002-05-10 2003-04-21 Method of impregnating, with detergent liquid, fabrics for cleaning high precision rotary cylinders, particularly of printing machines, and the shaft for its implementation Abandoned US20030208854A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2002BG000018A ITBG20020018A1 (it) 2002-05-10 2002-05-10 Procedimento di impregnazione con liquido detergente di tessuti pulitori di cilindri rotanti di alta precisione, particolarmente delle macch
ITBG2002A000018 2002-05-10

Publications (1)

Publication Number Publication Date
US20030208854A1 true US20030208854A1 (en) 2003-11-13

Family

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US10/419,231 Abandoned US20030208854A1 (en) 2002-05-10 2003-04-21 Method of impregnating, with detergent liquid, fabrics for cleaning high precision rotary cylinders, particularly of printing machines, and the shaft for its implementation

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Country Link
US (1) US20030208854A1 (it)
EP (1) EP1361058A3 (it)
IT (1) ITBG20020018A1 (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111930159A (zh) * 2020-07-09 2020-11-13 广东美的厨房电器制造有限公司 蒸汽装置的控制方法、家用设备和存储介质
CN113463302A (zh) * 2021-07-31 2021-10-01 巩义市泛锐熠辉复合材料有限公司 一种离心浸渍制备凝胶毡的设备及方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6955121B2 (en) * 2004-02-20 2005-10-18 Speedline Technologies, Inc. Methods and apparatus for cleaning a stencil
DE102004018735A1 (de) * 2004-04-17 2005-11-17 Baldwin Germany Gmbh Fluid-Sprühvorrichtung
MX2011010115A (es) * 2009-03-27 2011-10-11 Smidth As F L Eje de alimentacion para alimentar material particulado a un molino.
CN106120220B (zh) * 2016-08-18 2018-06-05 无锡飞达纺织印染机械有限公司 一种纺织用清洗装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784963A (en) * 1995-08-08 1998-07-28 Heidelberger Druckmaschinen Ag Cleaning device for cleaning cylinders of a printing press

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH456654A (it) * 1966-04-22 1968-07-31 Oxy Dry Internat Ltd Apparecchio per lavare e asciugare meccanicamente il cilindro di trasporto nelle macchine litografiche
SE501711C2 (sv) * 1993-09-08 1995-05-02 Jimek Int Ab Sprayrör för en duktvättanordning vid en tryckpress
JP3600744B2 (ja) * 1998-11-18 2004-12-15 大日本スクリーン製造株式会社 印刷装置の胴洗浄装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784963A (en) * 1995-08-08 1998-07-28 Heidelberger Druckmaschinen Ag Cleaning device for cleaning cylinders of a printing press

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111930159A (zh) * 2020-07-09 2020-11-13 广东美的厨房电器制造有限公司 蒸汽装置的控制方法、家用设备和存储介质
CN113463302A (zh) * 2021-07-31 2021-10-01 巩义市泛锐熠辉复合材料有限公司 一种离心浸渍制备凝胶毡的设备及方法

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ITBG20020018A0 (it) 2002-05-10
ITBG20020018A1 (it) 2003-11-10
EP1361058A2 (en) 2003-11-12
EP1361058A3 (en) 2004-05-12

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Legal Events

Date Code Title Description
AS Assignment

Owner name: T.G.C. S.R.L., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GHISALBERTI, MARCELLO;GHISALBERTI, LORENZO;REEL/FRAME:013987/0459

Effective date: 20030325

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION