EP0445600B1 - Mécanisme de nettoyage de cylindre pour presse à imprimer - Google Patents

Mécanisme de nettoyage de cylindre pour presse à imprimer Download PDF

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Publication number
EP0445600B1
EP0445600B1 EP91102578A EP91102578A EP0445600B1 EP 0445600 B1 EP0445600 B1 EP 0445600B1 EP 91102578 A EP91102578 A EP 91102578A EP 91102578 A EP91102578 A EP 91102578A EP 0445600 B1 EP0445600 B1 EP 0445600B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
cleaning
circumference
cleaning cloth
cleaning 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.)
Expired - Lifetime
Application number
EP91102578A
Other languages
German (de)
English (en)
Other versions
EP0445600A2 (fr
EP0445600A3 (en
Inventor
Toshihiko C/O Komori Corporation Ebina
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.)
Komori Corp
Original Assignee
Komori Corp
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
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Application filed by Komori Corp filed Critical Komori Corp
Publication of EP0445600A2 publication Critical patent/EP0445600A2/fr
Publication of EP0445600A3 publication Critical patent/EP0445600A3/en
Application granted granted Critical
Publication of EP0445600B1 publication Critical patent/EP0445600B1/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
    • B41F35/00—Cleaning arrangements or devices

Definitions

  • the present invention relates to a cylinder cleaning mechanism for cleaning a cylinder of a printing press.
  • a printing press such as a sheet-fed printing press or a rotary printing press, is provided with a cylinder cleaning mechanism having a cylinder cleaning unit employing a cleaning cloth for cleaning the circumference of the cylinder between successive printing cycles to prevent smearing printing sheets with an ink adhering to the circumference of the impression cylinder or the blanket cylinder.
  • the cleaning cloth is wound at a predetermined rate so that a new portion of the cleaning cloth is pressed always against the circumference of the cylinder so that the circumference of the cylinder can perfectly be cleaned.
  • a conventional cylinder cleaning mechanism for cleaning the impression cylinder of a printing press will be described with reference to Fig. 7 to 11.
  • a cylinder cleaning unit 8 side plates 2, an intermediate cylinder 3, an impression cylinder 4 to be cleaned by the cylinder cleaning unit 8, a recess 4a formed in the circumference of the impression cylinder 4, gripping fingers 6a, a gripper shaft 6b fixedly holding the gripping fingers 6a and capable of rocking to hold the edge of a printing sheet on a portion of the circumference of the impression cylinder 4 near the front edge 4b of the recess 4a with the gripping fingers 6a, a cleaning cloth 20, a pressure blade 10 having a front frame 10a and a rear frame 10b, for pressing the cleaning cloth 20 through a pressure pad 10b against the circumference of the impression cylinder 4, a cleaning cloth feed roller 14, a cleaning cloth winding roller 16, a guide bar 18 for guiding the cleaning cloth 20, a main frame 22 of the printing press, a rotary shaft 24 supporting the cylinder cleaning unit 8, bearings supporting the rotary
  • the pneumatic actuator 74 has a piston rod 76, and a connecting member 78 attached to the extremity of the piston rod 76 and provided with a slot 80 receiving a pin 82 fixed to the lever 26 therein to allow the lever 26 to swing so that the lever 26 may not interfere with the gripping fingers 6a.
  • the cylinder cleaning unit 8 is retracted from its cleaning position to avoid the interference of the cylinder cleaning unit 8 with the gripping fingers 6a, and then the cylinder cleaning unit 8 is returned to its cleaning position after the gripping fingers 6a have passed a position corresponding to the cleaning position.
  • a gear 58 is mounted on a one-way clutch 60 attached to one end of the shaft of the cleaning cloth winding roller 16, and a segment gear 62 is fixed to the main frame 22 with bolts 64 and 66 so as to engage the gear 58. Every time the cylinder cleaning unit 8 is turned on the rotary shaft 24 between the cleaning position and the escape position, the gear 58 rolls along the segment gear 62 to turn the cleaning cloth winding roller 16 through the one-way clutch 60 in one direction to wind up the cleaning cloth 20 by a predetermined length.
  • Fig. 7 showing a state in which the recess 4a of the impression cylinder 4 has almost arrived at a position directly below the pressure blade 10
  • the cam roller 30 attached to one end of the lever 26 is on the low cam section 50b of the cam 50 and hence the cylinder cleaning unit 8 is at the cleaning position with the center of the cleaning cloth winding roller 16 at a position A.
  • the cleaning cloth 20 is pressed against the circumference of the impression cylinder 4 through the pressure pad 12 by the pressure blade 10 to clean the circumference of the impression cylinder 4.
  • the cam roller 30 engages the high cam section 50a of the cam 50 to withdraw the cylinder cleaning unit 8 from the cleaning position and, consequently, the lever 26 is turned clockwise to turn the cylinder cleaning unit 8 on the rotary shaft 24 in a counterclockwise direction through the link 34, so that the center of the cleaning cloth winding roller 16 is shifted to a position B as shown in Fig. 8. While the center of the cleaning cloth winding roller 16 is being shifted from the position A to the position B, the gear 58 engaging the segment gear 62 is rotated clockwise.
  • the rotation of the gear 58 is transmitted through the one-way clutch 60 to the cleaning cloth winding roller 16 to wind up the cleaning cloth 20 by a predetermined length.
  • the pin 82 attached to-the lever 26 is able to move in the slot 80 of the connecting member 78 and, therefore, the withdrawal of the cylinder cleaning unit 8 from the cleaning position to avoid the interference of the cylinder cleaning unit 8 with the gripping fingers 6a and the advancement of the cylinder cleaning unit 8 to the cleaning position are not obstructed at all by the pneumatic actuator 74.
  • the lever 26 is turned counterclockwise by the compression spring 40 to turn the cylinder cleaning unit 8 clockwise on the rotary shaft 24 to the cleaning position, in which the center of the cleaning cloth winding roller 16 is located at the point A.
  • the gear 58 engaging the segment gear 62 is rotated counterclockwise while the cylinder cleaning unit 8 is being turned clockwise, the counterclockwise rotation of the gear 58 is not transmitted to the cleaning cloth winding roller 16.
  • the cleaning cloth 20 is wound by the predetermined length once every printing cycle, so that the circumference of the impression cylinder 4 is cleaned always with a new portion of the cleaning cloth 20.
  • the lever 26 is turned clockwise against the pressure of the compression spring 40 by the pneumatic actuator 74 to turn the cylinder cleaning unit 8 counterclockwise on the rotary shaft 24 beyond the escape positions to a standby position, in which the center of the cleaning cloth winding roller 16 is at a point C as shown in Fig. 9.
  • the piston rod 76 of the pneumatic actuator 74 is retracted to allow the lever 26 to be turned counterclockwise by the pressure of the compression spring 40 to shift the cylinder cleaning unit 8 from the standby position to the cleaning position as shown in Fig. 7.
  • the pressure of the compression spring 40 pressing the pressure blade 10 through the cleaning cloth 20 against the circumference of the impression cylinder 4 is not adjustable, in some cases, the cleaning cloth 20 cannot be pressed against the circumference of the impression cylinder 4 at an appropriate pressure and hence the circumference of the impression cylinder 4 cannot perfectly be cleaned.
  • the employment of the compression spring 40 and the pneumatic actuator 74 respectively for pressing the pressure blade 10 against the circumference of the impression cylinder 4 and turning the cylinder cleaning unit 8 to the standby position increases the number of component parts and needs additional space for those components.
  • EP-A-0 315 154 discloses a cleaning apparatus for the cylinder of a printing press.
  • the cleaning apparatus comprises a cleaner unit with a cleaning cloth which is selectively held in pressure contact with the surface of the cylinder by a pressure pad.
  • the pressure pad is hollow but has no cleaning edge. It is moved against the cylinder surface by means of a pneumatic cylinder. Retraction is achieved by a cam and cam follower mechanism. This structure is rather complex and consumes a considerable amount of space.
  • This invention relates to a cylinder cleaning mechanism as claimed in claim 1.
  • a cylinder cleaning mechanism comprises a cylinder cleaning unit comprising a cleaning cloth feed roller for feeding a cleaning cloth, a cleaning cloth winding roller for winding the used cleaning cloth, a pressure blade having cleaning edges and an elastic wiping portion and capable of pressing the cleaning cloth extended between the cleaning cloth feed roller and the cleaning cloth winding roller against the circumference of the cylinder, cleaning cloth winding means for driving the cleaning cloth winding roller to wind up the used portion of the cleaning cloth by a predetermined length at at time, and a fluid-operated actuator both for biasing the cleaning unit toward the cylinder to press the cleaning cloth against the circumference of the cylinder and for moving the cylinder cleaning unit away from the cylinder.
  • the ink smearing the circumference of the cylinder is scraped off and wiped off perfectly by the cleaning cloth pressed by the pressure blade having the edges and the elastic wiping portion.
  • the pressure applied to the cylinder cleaning unit by the fluid-operated actuator to press the cleaning cloth against the circumference of the cylinder is adjustable so that the cleaning cloth is pressed securely against the circumference of the cylinder for perfect cleaning.
  • the use of the fluid-operated actuator for pressing the cleaning cloth against the circumference of the cylinder and for shifting the cleaning unit relative the to cylinder enables the cylinder cleaning device to be installed in a relatively small space.
  • FIG. 1 A cylinder cleaning mechanism in a preferred embodiment according to the present invention will be described hereinafter with reference to Figs. 1 to 6, in which parts like or corresponding to those previously described with reference to Figs. 7 to 11 are denoted by the same reference characters and the description thereof will be omitted to avoid duplication.
  • the cylinder cleaning mechanism comprises, as principal components, a cylinder cleaning unit 8 comprising side plates 2 fixedly held on a rotary shaft 24 journaled on the frame 22 of the printing press, a pressure blade 102 for pressing a cleaning cloth 20 against the circumference of the impression cylinder 4, a holder 101 holding the pressure blade 102 and fixed to the side plates 2, a cleaning cloth feed roller 14 supported for rotation on the side plates 2 and a cleaning cloth winding roller 16 supported for rotation on the side plates 2, and a cylinder cleaning unit operating mechanism comprising a first lever 26 interlocked at its one end with the cylinder cleaning unit 8 by a link 34, fixed to one end of a rotary shaft 36 journaled on the frame 22 of the printing press, and provided at the other end with a cam roller 30, a plate cam 50 having a high cam section 50a and a low cam section 50b and fixed to the intermediate cylinder 3, a second lever 106 fixed to the other end of the rotary shaft 36, and a pneumatic actuator 107 pivotally
  • the pressure blade 102 has edges 103 with which the cleaning cloth 20 is pressed against the circumference of the impression cylinder 4 so as to scrape off matters smearing the circumference of the impression cylinder 4, and an elastic wiping portion 105 for elastically pressing the cleaning cloth 20 against the circumference of the impression cylinder 4 to wipe off the matters smearing the circumference of the impression cylinder 4.
  • the cylinder cleaning unit 8 When the piston rod 108 of the pneumatic actuator 107 is projected, the cylinder cleaning unit 8 is turned on the rotary shaft 24 through the second lever 106, the rotary shaft 36, the first lever 26 and the link 34 to a cleaning position, at which the pressure blade 102 presses the cleaning cloth 20 against the circumference of the impression cylinder 4 to clean the circumference of the impression cylinder.
  • adjustable stoppers 109 and 110 are provided on the frame 22 of the printing press to limit the clockwise turning and counterclockwise turning, respectively, of the second lever 106.
  • the effective pressure acting on the cleaning cloth 20 can be adjusted by adjusting the limit of clockwise turning of the second lever 106 by means of the adjustable stopper 109.
  • pneumatic actuator 107 is used both for shifting the cylinder cleaning unit 8 between the cleaning position and the standby position and for pressing the cleaning cloth against the circumference of the impression cylinder 4, which simplifies the cylinder cleaning mechanism, reduces the space necessary for installing the cylinder cleaning mechanism and enables the cleaning cloth 20 to be securely pressed against the circumference of the impression cylinder 4.
  • the present invention has been described as applied to a cylinder cleaning mechanism for cleaning the circumference of the impression cylinder of a printing press, the present invention is applicable also to a cylinder cleaning mechanism for cleaning the circumference of other cylinder of a printing press, such as the blanket cylinder.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (2)

  1. Mécanisme de nettoyage de cylindre pour nettoyer un cylindre (4) d'une presse à imprimer, comprenant:
       un dispositif (8) de nettoyage de cylindre comportant:
       une paire de plaques latérales (2),
       un rouleau distributeur (14) de tissu de nettoyage pivotant les plaques latérales (2), afin de fournir un tissu de nettoyage (20),
       un rouleau enrouleur (16) de tissu de nettoyage pivotant sur les plaques latérales (2) pour enrouler le tissu de nettoyage (20) fourni par le rouleau distributeur (14) de tissu de nettoyage,
       une lame d'appui (102) ayant au moins un bord de nettoyage (103) et une partie élastique d'essuyage (105), tenue sur les plaques latérales (2) de façon à appuyer contre le pourtour du cylindre (4) de la presse à impression le tissu de nettoyage (20) s'étendant entre le rouleau distributeur (14) de tissu de nettoyage et le rouleau enrouleur (16) de tissu de nettoyage, ladite partie élastique d'essuyage (105) étant creuse et de forme convexe,
       un mécanisme d'enroulement (58, 60, 62) de tissu de nettoyage pour entraîner le rouleau enrouleur (16) de tissu de nettoyage afin d'enrouler en une seule fois une longueur prédéterminée de la partie usagée du tissu de nettoyage (20); et
       un mécanisme de manoeuvre du dispositif (8) de nettoyage de cylindre, comprenant:
       un vérin hydraulique (107) servant à la fois à pousser le dispositif (8) de nettoyage de cylindre vers le pourtour du cylindre (4) de façon que le tissu de nettoyage (20) soit convenablement appuyé contre le pourtour du cylindre (4) à l'aide de la lame d'appui (102) et à écarter du cylindre (4) le dispositif (8) de nettoyage de cylindre, et
       un mécanisme de transmission pour transmettre au dispositif (8) de nettoyage de cylindre l'action du vérin hydraulique (107.
  2. Mécanisme de nettoyage de cylindre selon la revendication 1, dans lequel ledit vérin hydraulique (107) actionne le dispositif (8) de nettoyage de cylindre entre une position A de nettoyage dans laquelle le tissu de nettoyage (20) est appuyé contre le pourtour du cylindre (4) de la presse à imprimer et une position d'attente C dans laquelle le dispositif (8) de nettoyage de cylindre est nettement écarté du pourtour du cylindre (4) de la presse à imprimer.
EP91102578A 1990-03-05 1991-02-22 Mécanisme de nettoyage de cylindre pour presse à imprimer Expired - Lifetime EP0445600B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1990021408U JPH081869Y2 (ja) 1990-03-05 1990-03-05 印刷機のシリンダ洗浄装置
JP21408/90U 1990-03-05

Publications (3)

Publication Number Publication Date
EP0445600A2 EP0445600A2 (fr) 1991-09-11
EP0445600A3 EP0445600A3 (en) 1991-11-21
EP0445600B1 true EP0445600B1 (fr) 1995-02-01

Family

ID=12054207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91102578A Expired - Lifetime EP0445600B1 (fr) 1990-03-05 1991-02-22 Mécanisme de nettoyage de cylindre pour presse à imprimer

Country Status (4)

Country Link
EP (1) EP0445600B1 (fr)
JP (1) JPH081869Y2 (fr)
AT (1) ATE117943T1 (fr)
DE (1) DE69107102T2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3000535B2 (ja) * 1992-01-27 2000-01-17 株式会社小森コーポレーション 印刷機械のシリンダ洗浄装置
DE4319258C2 (de) * 1993-06-09 2003-10-09 Heidelberger Druckmasch Ag Reinigungsvorrichtung für Druckmaschinen
JP2872559B2 (ja) * 1993-08-04 1999-03-17 ニッカ株式会社 印刷機シリンダ等洗浄用の圧着パッドおよびその製造 方法
JPH08238758A (ja) * 1995-02-11 1996-09-17 Heidelberger Druckmas Ag 輪転印刷機の印刷装置のためのクリーニング装置
DE19611126A1 (de) * 1996-03-21 1997-09-25 Heidelberger Druckmasch Ag Reinigungseinrichtung an Rotationsdruckmaschinen
DE29802171U1 (de) * 1998-02-09 1998-03-19 Heidelberger Druckmaschinen Ag, 69115 Heidelberg Vorrichtung zur Reinigung von zwei Zylindern in einer Druckmaschine
CN107097454B (zh) * 2017-05-12 2023-05-09 贵州鸿图彩印包装有限责任公司 酒盒生产用防尘式切纸机

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01122438A (ja) * 1987-11-06 1989-05-15 B J Trading Kk シリンダ洗浄装置
JPH02169252A (ja) * 1988-12-23 1990-06-29 Nippon Baldwin Kk 印刷機のシリンダ洗浄装置

Also Published As

Publication number Publication date
EP0445600A2 (fr) 1991-09-11
DE69107102T2 (de) 1995-05-24
EP0445600A3 (en) 1991-11-21
JPH081869Y2 (ja) 1996-01-24
ATE117943T1 (de) 1995-02-15
JPH03112337U (fr) 1991-11-18
DE69107102D1 (de) 1995-03-16

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