WO2003084756A1 - Lösch- und reinigungsvorrichtung für zylinder, insbesondere druckform- und gummituchzylinder einer druckmaschine, mit einem taktantrieb für ein kontinuierliches reinigungstuch - Google Patents
Lösch- und reinigungsvorrichtung für zylinder, insbesondere druckform- und gummituchzylinder einer druckmaschine, mit einem taktantrieb für ein kontinuierliches reinigungstuch Download PDFInfo
- Publication number
- WO2003084756A1 WO2003084756A1 PCT/EP2003/003653 EP0303653W WO03084756A1 WO 2003084756 A1 WO2003084756 A1 WO 2003084756A1 EP 0303653 W EP0303653 W EP 0303653W WO 03084756 A1 WO03084756 A1 WO 03084756A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cloth
- roll
- cleaning
- gear
- dirty
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F35/00—Cleaning arrangements or devices
-
- 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
Definitions
- the invention relates to a generic extinguishing and cleaning device according to the preamble of claim 1, also called an extinguishing station, for cleaning cylindrical surfaces, in particular printing plate and blanket cylinders within printing machines with the aid of a cleaning cloth that can be guided by means of cleaning cloth transport means, the feed of which can be carried out in cycles.
- a cleaning system for printing forms is known for example from the document DE 44 42 412 A1, which discloses a method and a device for controlling the washing operation in a printing press.
- the task to be solved in that publication is based on the knowledge that the control of the feed for the cleaning cloth must be made more precise, reliable and versatile.
- This object is essentially achieved in that publication that the cleaning cloth transport receives a proportional pulse from a clocked gear, which are used to control the drive motors for the transport means of the cleaning cloth so that the respective transport paths of the cleaning cloth can be kept approximately constant.
- An exchangeable so-called washing insert has a sensing device in the form of a clock shaft, on which the cleaning cloth rolls, and a sensor attached to the printing press, which scans a toothed clock wheel connected to the clock shaft, the thickness of the cloth roll also being sensed by a spring-loaded flag , which interacts mechanically with a second machine-side sensor.
- An easy-to-measure measure of the transport speed of the cleaning cloth is the frequency of signals obtained from regular markings.
- the aforementioned known arrangement requires a separate control mechanism, which requires a material outlay and also a considerable outlay on maintenance.
- DE 100 08 214 A1 is a generic
- Known cleaning device for cleaning the surface of a blanket cylinder or any cylinder of a printing unit with a clock drive for the continuous cleaning blanket.
- the means of transport of the cleaning cloth also essentially comprise a fresh cloth roll and a dirty cloth roll for receiving the cleaning cloth, which is included
- Washing liquid is soaked and is pulled from the towel roll to the towel roll.
- the cleaning cloth is always held under tension by pressing means in the form of a washing roller.
- the cleaning device is designed in particular as a slide-in system and is assigned to the cylindrical body to be cleaned in the installed state.
- the cleaning device is brought into or out of contact with the cylinder via a positioning unit.
- a washing liquid supply is machine-assigned to the cleaning device.
- the fresh cloth roll, the washing roll and the dirty cloth roll are rotatably mounted in two parallel side parts.
- the washing roller has a shaft that has an elastic coating and serves as a pressing element to press the cleaning cloth against the cylindrical body and at the same time to guide the cleaning cloth.
- the side parts of the slide-in system are connected to each other via a crossbar.
- the cleaning cloth is guided from the fresh towel roll in the largest possible wrap angle over the washing roll in the pulling direction of the dirty towel roll.
- the cleaning cloth is moistened with a washing liquid.
- a drive is introduced to the roll of dirt cloth via a shaft and gear.
- the dirty tissue roll is driven in a cyclical manner and gradually pulls the cleaning cloth from the fresh cloth roll over the washing roll, which brings the cleaning cloth into contact with the cylindrical body to be cleaned, in the pulling direction and picks up the cleaning cloth on a shaft.
- the clock drive has so far been introduced in a conventional manner via an (electric) motor or a pneumatic or hydraulic drive element, such as a compressed air cylinder, a drive shaft or rod and a gearwheel train, onto the roll of dirty tissue.
- a disadvantage of the previous solutions of a mechanical cycle drive is that the duration of a drive cycle, from which the respective transport path of the cleaning cloth results, always remains the same and thus the occurrence of one
- the transport path difference of the intermittent cloth advance depending on the decrease in the cloth supply on the fresh cloth roll or on the increase in the winding radius of the cleaning cloth on the dirty cloth roll is not taken into account.
- the cycle time (of the drive cycle) or the cycle speed would have to be greatest in order to wind up a certain length of cloth with a small winding radius of the dirty cloth roll, and with increasing winding radii of the dirty cloth roll it would always be smaller by the certain cloth length, i.e. one to maintain a constant transport path, so that a transport path difference occurring due to the varying winding radius with a constant cycle time would have to be compensated for, or by the
- the object of the present invention is therefore to develop the clock drive for the cleaning cloth for a generic deletion and cleaning device in such a way that the disadvantages described above are eliminated.
- the same feed i.e. constant transport path of the cleaning cloth and a uniform tension of the cloth between the cleaning cloth transport means is guaranteed, so that, for example, unevenness in transport due to the decrease in the roll thickness on the fresh cloth roll or the increase in the winding radius of the dirty cloth roll is reliably compensated.
- the stroke drive according to the invention which is essentially a stroke-limited, pneumatically or hydraulically driven linear drive, the stroke movement of which is translated into a rotational movement by means of a gearwheel mounted on the drive unit to be driven with a preferably double freewheel or overrunning clutch, is a stroke limitation by means of a variably adjustable cam control and an integrated variably adjustable brake includes, all functions of the previous clock drive can be realized in the smallest space, as well as eliminating all the disadvantages described above.
- FIG. 2 is a perspective view of the object of FIG. 1,
- Fig. 3 is a view of the drive according to the invention which can be introduced onto the roll of dirty cloth of the cleaning cassette and which is operated in cycles and
- Fig. 4 is a sectional view CC through Fig. 1 with a braking device counteracting the clock drive.
- the device for erasing and cleaning cylindrical surfaces comprises, as already described above, a wipe roll, a wipe roll for accepting the used cleaning cloth, and a pressure element, in particular a washing roll, which presses the cloth against a cylindrical surface.
- the positioning unit comprises two side parts which are arranged parallel to one another and which are connected to one another via a traverse to form a structure in which all the necessary supply units are introduced.
- the side parts house storage elements which interact with the cleaning cloth transport means of an inserted cassette, that is to say that the cassette of the positioning unit can be placed on and positively and non-positively connected to it, such as a video cassette in its associated drive, with the positioning unit in a known manner Drive for the cleaning cloth transport means is articulated so that the positioning unit and the drive are modular.
- a drive motor thus serves to drive the cleaning cloth and is controlled by a computer program, which can enable a section-by-step advancement of the cleaning cloth and a partial return after each cleaning process and finally a rewinding of the used cleaning cloth from the dirty cloth roll to the fresh cloth roll.
- Fig. 1 one of the side walls 1 of the positioning unit for the cleaning cloth is shown.
- bearing elements 2, 3, 4 are provided for the washing roll, the fresh towel roll, and for the dirty towel roll, which can be positively and non-positively connected to these, which are housed in an exchangeable cassette.
- the opposite side wall of the positioning unit is designed accordingly.
- the cleaning cloth is advanced at least on one side wall 1 via a linear drive 5, preferably in the form of a stroke-limited pneumatic cylinder, the stroke limitation being adjustable via a scraper 6 on the wipe roll.
- a linear drive 5 preferably in the form of a stroke-limited pneumatic cylinder, the stroke limitation being adjustable via a scraper 6 on the wipe roll.
- the clock drive on a side wall 1 is described below.
- the opposite side wall can be designed in the same way and in synchronous effect, but is not necessary for the desired function.
- the wiper 6 is designed by means of a clear system 9 of a small wheel rolling on the cleaning cloth on the roll of dirty cloth on a guide rod 7, which is held by a control housing 8 and can be moved transversely in the direction of the control housing 8 with increasing winding radius of the dirty cloth roll, the control housing 8 this movement is opposed by a hydraulic or pneumatic control means and thus, comparable to a spring force, counteracts a return force from the gripper 6.
- FIG. 2 shows a perspective view of the side wall 1 according to FIG. 1 with the same reference numerals.
- the path of the transverse movement of the wheel 6 with the guide rod 7 in the direction of the arrow is the measure for the increase or decrease in the winding radius of the dirty-tissue roll.
- Fig. 3 illustrates the cut side wall 1.
- a gear 10 is placed concentrically on the bearing element 4 for introducing the clock drive for the dirty tissue roll.
- a gear rod 12 is articulated to a pneumatic cylinder by means of a guide rod 11, approximately tangential to the circumference of the gear wheel 10.
- the gear rod 12 is in clear contact with a guide surface of the linear drive 5, meshes with the gear 10 on the bearing element 4 and has a stroke-limiting stop surface 13 at the end remote from the guide rod 10.
- the gear 10 is applied to the bearing element 4 by means of a preferably double (switchable for both directions of rotation) freewheel or overrunning clutch, which is switched by the relative rotations of two so-called clutch halves, the torque being non-positive in the relative direction of rotation in which the freewheel locks is usually transmitted by clamping friction, so that the freewheel or overrunning clutch locks when the dirty cloth roller is rotated in the pulling direction of the cleaning cloth and freewheels in the opposite direction.
- a preferably double (switchable for both directions of rotation) freewheel or overrunning clutch which is switched by the relative rotations of two so-called clutch halves, the torque being non-positive in the relative direction of rotation in which the freewheel locks is usually transmitted by clamping friction, so that the freewheel or overrunning clutch locks when the dirty cloth roller is rotated in the pulling direction of the cleaning cloth and freewheels in the opposite direction.
- the rack 12 forms the tension element for the clock drive of the gear 10 on the bearing element 4, which drives the roll of dirty tissue brings.
- the gear wheel 10 thus translates the stroke movement or the stroke length of the rack 12 of the linear drive into a clock-shaped rotational movement, the cycle duration being predeterminable by the stroke length of the rack 12.
- the toothed rack 12 can be moved by means of the guide rod 11, which can be controlled by the pneumatic cylinder 5, with the stop surface 13 transversely against a stop cam element 14 arranged movably in the side wall 1, and by means of this lifting movement, the bearing element 4 can be driven in the corresponding direction for the wipe roll.
- the gear 10 is in freewheeling mode, so that the bearing element 4 is cycled, the cycle duration of which is determined by the stroke length, i.e. is limited by the path length of the rack 12 from the defined starting position of the transverse movement to the stop of the stop surface 13 on the stop curve element 14 and is interrupted by the return movement of the rack 12 to the starting position.
- the wheel 6 rolling on the cleaning cloth roll on the dirty cloth roll can be moved transversely by means of the guide rod 7 in accordance with the changing winding radii.
- the system 9 is associated with the guide rod 7 in a unique system, a further rack 15 which meshes with an intermediate gear 16 and drives this in accordance with the linear movement.
- the intermediate gear 16 translates its rotation again via a third rack 17 into a linear movement which drives a gear train 18 and thus adjusts the stop curve element 14 by means of a corresponding comb in a plane perpendicular to the direction of movement of the rack 12 indicating the clock, in order to match the curve shape incorporated Vary cycle time over the changed stroke length of the rack 12.
- the stop curve element 14 is adjustable and thus the stroke length of the toothed rack 12 of the linear drive 5 which specifies the drive stroke changing winding radii of the wipe roll can be varied.
- the drive cycle is defined over the stroke length of a transversely reciprocating rack 12, the Drive cycle by means of an adjustable stop curve element 14 for the rack 12 is variable and the adjustment of the stop curve element 14 results from a scanning of the winding radius of the dirty cloth roll over a sequence of racks 15, 17 and intermediate gears 16, 18 to keep the transport length of the cleaning cloth constant per cycle.
- the curve shape of the stop curve element 14 is calculated numerically and specifies the change in the cycle duration.
- FIG. 4 shows in the form of a sectional view C-C through FIG. 1 with a braking device which counteracts the clock drive.
- the braking device is implemented in the form of a disc brake on the bearing element 3, via which the braking forces are introduced onto the fresh cloth roll.
- the friction forces between a brake pad, brake pads and brake disc determine the power transmission.
- the gear train 18 for adjusting the stop curve element 14 driving rack 17 is assigned an axis 28, on which a screw nut 22 is arranged, with circumferential teeth 21 which mesh with the teeth of an extension 20 of the rack 17. Due to the linear movement of the toothed rack 17, the screw nut 22 can be rotated on the axis 28 against a stop bolt 23 which, when loaded by the screw nut 22, tilts a brake pad 24 arranged on the axis 28 against a brake pad 25 and thus increases the frictional force on the brake pad 25 and releases the downstream brake block 24 in the state relieved of the screw nut and thus reduces the frictional force on the brake lining 25.
- the brake pad 25 is by tilting the brake pad 24 to one
- Brake disc 26 can be placed on the bearing element 3 for the fresh cloth roll, which in turn can be pressed onto a further brake lining 27 lying in parallel and fixed in the side wall. In this way, a very effective variable braking device for the wipe roll is realized. Since, according to the task, the braking force counteracting the direction of rotation of the wipe roll should become smaller and smaller as the winding radii of the wipe roll increase and at the same time the cycle time or the stroke of the linear drive should also become smaller and smaller as the winding radii of the wipe roll increase, the adjustment is particularly advantageous of the stop curve element 14, that is to say the setting of the variable path length of the cycle stroke, coupled with the setting of the variable disk brake 23 to 27 with one another via the extension 20 of the toothed rack 17 and the circumferential teeth 21 of the screw nut 22.
- the positioning unit itself further preferably comprises an electromotive drive and a conversion into a linear movement (for example via gearwheels and threaded drive) for the operating start and stop.
- the erasing and cleaning device is generally suitable for cleaning cylindrical surfaces inside and outside of printing presses with the aid of a modular cloth transport unit, but can preferably be used for cleaning systems which, in a lithographic process, require a rapid change of the imaging without the need to remove the printing form allow. Examples include printing-on-demand systems and computer-to-plate systems.
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002481881A CA2481881C (en) | 2002-04-11 | 2003-04-09 | Erasing and cleaning apparatus for cylinders, in particular printing form and blanket cylinders of a printing press, having an intermittently operated drive for a continuous cleaning cloth |
US10/510,608 US7017488B2 (en) | 2002-04-11 | 2003-04-09 | Washing and cleaning device for cylinders, especially printing form cylinders and offset blanket cylinders in a printing machine comprising a timing mechanism for a continuous cleaning cloth |
EP03722423A EP1497131A1 (de) | 2002-04-11 | 2003-04-09 | Lösch- und reinigungsvorrichtung für zylinder, insbesondere druckform- und gummituchzylinder einer druckmaschine, mit einem taktantrieb für ein kontinuierliches reinigungstuch |
JP2003581978A JP2005522350A (ja) | 2002-04-11 | 2003-04-09 | 連続クリーニング布用のサイクル駆動装置を備えた、胴、特に印刷機の版型胴とゴムブランケット胴用の吸い取りおよびクリーニング装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10216058.9 | 2002-04-11 | ||
DE10216058A DE10216058B4 (de) | 2002-04-11 | 2002-04-11 | Lösch- und Reinigungsvorrichtung für Zylinder, insbesondere Druckform- und Gummituchzylinder einer Druckmaschine, mit einem Taktantrieb für ein kontinuierliches Reinigungstuch |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003084756A1 true WO2003084756A1 (de) | 2003-10-16 |
Family
ID=28684959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/003653 WO2003084756A1 (de) | 2002-04-11 | 2003-04-09 | Lösch- und reinigungsvorrichtung für zylinder, insbesondere druckform- und gummituchzylinder einer druckmaschine, mit einem taktantrieb für ein kontinuierliches reinigungstuch |
Country Status (7)
Country | Link |
---|---|
US (1) | US7017488B2 (de) |
EP (1) | EP1497131A1 (de) |
JP (1) | JP2005522350A (de) |
CN (1) | CN100376392C (de) |
CA (1) | CA2481881C (de) |
DE (1) | DE10216058B4 (de) |
WO (1) | WO2003084756A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101628514B (zh) * | 2008-07-16 | 2012-05-30 | 海德堡印刷机械股份公司 | 通过至少一种液体处理可重复使用的印刷技术表面的方法 |
EP2367688B1 (de) * | 2008-11-21 | 2019-07-03 | Goss International Americas, Inc. | Ausrichtungsvorrichtung mit verstellbarem schnitt und verfahren zur ausrichtung von druckzylindern während eines schnittwechsels |
US9156248B1 (en) * | 2014-04-30 | 2015-10-13 | Xerox Corporation | Systems and methods for implementing a release film for a cleaning unit in an image forming device using digital offset lithographic printing techniques |
US9919511B1 (en) * | 2017-02-02 | 2018-03-20 | Illinois Tool Works Inc. | Stencil printer having controllable tension device for a stencil wiper assembly and method of controlling tension |
CN110846831B (zh) * | 2019-12-11 | 2024-06-14 | 苏州佳人良无纺布制品有限公司 | 一种无纺布清洗器 |
CN112754582B (zh) * | 2021-01-27 | 2022-11-15 | 浙江医高医疗科技有限公司 | 一种可实现先缝后切的***吻合器 |
CN117380596B (zh) * | 2023-12-07 | 2024-03-08 | 陕西东胜机械制造有限公司 | 数控机床表面清洁清污装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4986182A (en) * | 1988-09-13 | 1991-01-22 | Nikka Kabushiki Kaisha | Cleaning apparatus and cleaning method of blanket of printing press |
EP0611652B1 (de) | 1993-02-19 | 1995-08-09 | MAN Roland Druckmaschinen AG | Waschvorrichtung |
DE4442412A1 (de) | 1994-11-29 | 1996-05-30 | Heidelberger Druckmasch Ag | Verfahren und Vorrichtung zur Steuerung des Waschbetriebs bei einer Druckmaschine |
DE29611014U1 (de) * | 1996-06-24 | 1996-08-29 | Heidelberger Druckmaschinen Ag, 69115 Heidelberg | Vorrichtung zum Reinigen eines Zylinders an einer Druckmaschine |
DE10008214A1 (de) | 2000-02-23 | 2001-08-30 | Roland Man Druckmasch | Lösch- und Reinigungsvorrichtung für Zylinder, insbesondere Druckform- und Gummituchzylinder einer Druckmaschine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2285997A1 (fr) * | 1974-09-11 | 1976-04-23 | Moestue Hans | Dispositif de nettoyage d'un cylindre d'une machine a imprimer |
CN2472925Y (zh) * | 2001-01-20 | 2002-01-23 | 刘文锦 | 滚筒外表面清洁装置 |
-
2002
- 2002-04-11 DE DE10216058A patent/DE10216058B4/de not_active Expired - Fee Related
-
2003
- 2003-04-09 US US10/510,608 patent/US7017488B2/en not_active Expired - Fee Related
- 2003-04-09 CA CA002481881A patent/CA2481881C/en not_active Expired - Fee Related
- 2003-04-09 WO PCT/EP2003/003653 patent/WO2003084756A1/de active Application Filing
- 2003-04-09 JP JP2003581978A patent/JP2005522350A/ja active Pending
- 2003-04-09 EP EP03722423A patent/EP1497131A1/de not_active Withdrawn
- 2003-04-09 CN CNB038082012A patent/CN100376392C/zh not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4986182A (en) * | 1988-09-13 | 1991-01-22 | Nikka Kabushiki Kaisha | Cleaning apparatus and cleaning method of blanket of printing press |
EP0611652B1 (de) | 1993-02-19 | 1995-08-09 | MAN Roland Druckmaschinen AG | Waschvorrichtung |
DE4442412A1 (de) | 1994-11-29 | 1996-05-30 | Heidelberger Druckmasch Ag | Verfahren und Vorrichtung zur Steuerung des Waschbetriebs bei einer Druckmaschine |
DE29611014U1 (de) * | 1996-06-24 | 1996-08-29 | Heidelberger Druckmaschinen Ag, 69115 Heidelberg | Vorrichtung zum Reinigen eines Zylinders an einer Druckmaschine |
DE10008214A1 (de) | 2000-02-23 | 2001-08-30 | Roland Man Druckmasch | Lösch- und Reinigungsvorrichtung für Zylinder, insbesondere Druckform- und Gummituchzylinder einer Druckmaschine |
Also Published As
Publication number | Publication date |
---|---|
US20050126412A1 (en) | 2005-06-16 |
CN100376392C (zh) | 2008-03-26 |
EP1497131A1 (de) | 2005-01-19 |
JP2005522350A (ja) | 2005-07-28 |
US7017488B2 (en) | 2006-03-28 |
CN1646320A (zh) | 2005-07-27 |
DE10216058A1 (de) | 2003-11-06 |
CA2481881C (en) | 2008-07-15 |
CA2481881A1 (en) | 2003-10-16 |
DE10216058B4 (de) | 2005-07-28 |
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