EP0673768B1 - Bobinoir pour tissu nettoyant pour machines d'impression - Google Patents

Bobinoir pour tissu nettoyant pour machines d'impression Download PDF

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Publication number
EP0673768B1
EP0673768B1 EP95104493A EP95104493A EP0673768B1 EP 0673768 B1 EP0673768 B1 EP 0673768B1 EP 95104493 A EP95104493 A EP 95104493A EP 95104493 A EP95104493 A EP 95104493A EP 0673768 B1 EP0673768 B1 EP 0673768B1
Authority
EP
European Patent Office
Prior art keywords
washing
cloth
roller
dirty
pressing element
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
EP95104493A
Other languages
German (de)
English (en)
Other versions
EP0673768A1 (fr
Inventor
Franz Waizmann
Michael Anders-Woschick
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.)
Baldwin Grafotec GmbH
Original Assignee
Baldwin Grafotec 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 Baldwin Grafotec GmbH filed Critical Baldwin Grafotec GmbH
Publication of EP0673768A1 publication Critical patent/EP0673768A1/fr
Application granted granted Critical
Publication of EP0673768B1 publication Critical patent/EP0673768B1/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 invention relates to a winding stand for printing machine washcloths according to the preamble of claim 1.
  • the object of the invention is to provide a possibility by which a plurality of washing units from one or more printing machines can be exchanged with one another without the washing units in the printing machines having to be adjusted to each rotary body separately.
  • the winding stand 2 shown in FIG. 1 has a mobile frame 4 on rollers 6.
  • a first bearing device 8 for the rotatable mounting of a supply roll 10 for a washcloth web 12, the width of which essentially corresponds to the width of one to be cleaned
  • Rotating body 14 corresponds to the relevant printing machine of FIG. 2 and its length is a multiple of the length of a wash cloth 20 wound on a cleaning cloth roll 18.
  • the rotary body 14 of the printing press is preferably a printing image transfer cylinder, which is usually a blanket cylinder today, an impression cylinder, a printing plate cylinder or a roller or roller, for example an inking roller for transferring ink to the printing plate cylinder or a dampening roller for transferring dampening liquid to one of the printing unit cylinders.
  • a printing image transfer cylinder which is usually a blanket cylinder today, an impression cylinder, a printing plate cylinder or a roller or roller, for example an inking roller for transferring ink to the printing plate cylinder or a dampening roller for transferring dampening liquid to one of the printing unit cylinders.
  • a second bearing device 22 in which the cleaning cloth roll 18 is arranged at a distance from the supply roll 10 and parallel to it.
  • a crank 24 for rotating the cleaning cloth roll 18 is arranged, so that a certain length of washing cloth 12 can be wound from the supply roll 10 as a washing cloth 20 onto the cleaning cloth roll 18 by rotating the cleaning cloth roll 18.
  • a motor could also be used.
  • a first knife 26 serves to separate the wash cloth section 28 which extends from the supply roll 10 to the clean cloth roll 18.
  • the clean cloth roll 18 with the clean wash cloth roll 20 is then inserted into a washing unit 30, in which the clean wash cloth 20 is wound from the clean cloth roll 18 via a pressing element 32 onto a dirty cloth roll 34, so that a dirty cloth roll 37 is formed.
  • the pressing element 32 presses the washcloth 20 against the outer surface 35 of the cylinder 14 when a certain air pressure is generated in a compressed air chamber 36, which acts on the pressing element 32.
  • the level of the air pressure in the compressed air chamber 36 of the pressure element 32 determines the force with which the pressure element 32 presses the washcloth 20 against the cylinder 14.
  • the washcloth 20 is moistened in a known manner with liquid from a liquid dispensing device, for example nozzles 38.
  • the washing unit 30 has a bar-shaped, elongated shape of approximately the same length as the cylinder 14 and is detachably fastened to a side frame 42 of the printing press by means of bolts 40. Only one of the two side frames 42 is shown in FIG. 2. The front edge of the bolts 42 lies against a stop surface 44 of a carrier 46 of the washing unit 30. The pad 44 faces away from the cylinder 14. As a result, the pressure exerted by the pressing element 32 on the cylinder 14 is supported on the bolts 40 via the stop surfaces 44 on both front ends of the washing unit 30.
  • the stop surfaces 44 are formed by the rear-facing surfaces of receiving openings 48 in the carrier 46.
  • the distance "y" between the pin 40 or the stop surface 44 and the cylinder 14 is the same.
  • the distance "y” becomes the following cylinder-machine distance called.
  • the pressure exerted on the cylinder 14 by the pressing element 32 should always be the same at a certain air pressure in the compressed air chamber 36. However, this is not the case because both the manufacturing tolerances of the device parts and the elasticity of the pressing element 32 differ from wash bar to wash bar 30. In a printing press, several wash bars are usually distributed over several cylinders.
  • the pressure element 32 preferably consists of a band or hose made of elastic material, for example rubber or plastic, foamed plastic or other elastic material, which is held by a holder 50 in the washing unit 30.
  • a strip-shaped elastic pressure element and pressure pistons actuated by compressed air and acting thereon can be provided.
  • set screws 52 can be used, by means of which the distance of the holder 50 from a fixed element 54 can be set, which is arranged fixed with respect to the carrier 46 or can be positioned in certain positions.
  • Fig. 3 shows in a cross section along the plane III-III of Fig. 2 that the pressing element 32 instead of the shape of a tube also the shape of an elastic band can have, which together with the holder 50 forms a compressed air chamber 36, by means of which compressed air the pressing element 32 can be expanded in the direction of the cylinder 14.
  • FIG. 3 also shows that the fixed element 54 is connected to front side parts 56 of the washing unit 30.
  • the side parts 56 can be displaced relative to the side supports 46 in the direction of the cylinder 14 and can be fixed in certain positions by a bolt 58.
  • the holder 50 can be adjusted in the direction of the cylinder 14, instead of by means of the adjusting screws 52, in order to change the holder distance "x" and thereby thereby a predetermined between the pressure element 32 and the cylinder 14 Generate contact pressure, corresponding to a predetermined air pressure in the compressed air chamber 36.
  • the left front end, not shown in FIG. 3, is designed in the same way as the front end shown in FIG.
  • FIG. 3 also shows a first compressed air connection 60 for the step-by-step drive of the dirty tissue roller 34 by means of compressed air and for generating a predetermined, preferably adjustable, air pressure in the compressed air chamber 36.
  • a third bearing device 62 for rotatably mounting a roll of dirty cloth 34 with a dirty wash cloth 37 wound thereon, which is the wash cloth 20 of the clean cloth roll 18 of FIGS. 2 and 3 after it has been removed Cylinder 4 dirt was wiped and wound onto the dirty cloth roll 34.
  • cutting means for example in the form of a rotating cutter disk 66 driven by an electric motor 67, are accommodated, which can be moved by motor along the dirty-cloth roller 34 by means of a transport device 68 in order to cut open the dirty-cloth roll 37 up to the dirty-cloth roll 34 in the axial longitudinal direction.
  • the knife disk 66 must be radially inserted close to the wipe roll 34 through the wipe roll 64 and must also be transported over the entire length of the wipe roll. This results in square pieces of dirty tissue, which have a length of the dirty tissue roll 37 and thus also a length corresponding essentially to the length of the cylinder 14.
  • these pieces of dirty tissue fall, either independently or by support by hand or mechanically, onto a collecting plate 70 arranged under the dirty tissue roller 34. Since these dirty tissue pieces have a length which essentially corresponds to the length of the cleaned cylinder 14, they can be used for another purpose, especially for cleaning inking units in inking unit cleaning systems of the printing press before they are then disposed of.
  • the pieces of soiled cloth of the soiled roll 34 are soiled, but are still able to receive inking unit residues and other dirt particles from inking units.
  • the third bearing device 62 need not be designed in such a way that the winding roll 34 can be rotated for the cutting of the dirty cloth roll 37 on the dirty cloth roll 34.
  • Such a rotation lock can be made by means of a locking pin 72 which is supported by a bearing sleeve 74 is passed through and blocked in the bearing sleeve 74 rotatably mounted wipe roller 34.
  • a fourth bearing device 76 of rotatably mounting a collecting roller 78 onto which the dirty wash towels 37 are successively disposed several rolls of dirty cloth 34 can be wound up.
  • the collecting roller 78 can be driven by means of a hand crank 80 by hand or by means of a motor.
  • the collecting roll 78 is preferably designed so that an equal amount of washcloth can be wound on it as on the supply roll 10, so that a multi-wrap 81 is formed on the collecting roll 78, which consists of a plurality of dirty washcloths 37 of a corresponding variety of dirty cloth rolls 34.
  • the first bearing device 8 for the supply roll 10 and the fourth bearing device 76 for the collecting roll 78 are preferably arranged parallel to one another in the lower part of the frame 4.
  • the second bearing device 22 for the cleaning cloth roll 18 and the third bearing device 62 for the dirty cloth roll 34 are preferably arranged in the upper region of the frame 4 in parallel next to one another and in parallel above the first and second bearing devices 8 and 76.
  • the soiled washcloths require very little volume both when they are wound onto a collecting roll 78 and when they are cut open in the winder stand by the cutting means 66 from the dirty cloth roll 34 in the longitudinal direction and then unfolded, since the individual washcloth layers are not wrinkled and compact lie on one another.
  • the rollers 10, 18, 34 and 78 can be hollow or solid.
  • a calibration device 82 for calibrating washing units 30 is provided above the dirty cloth roll 34.
  • the washing unit 30 to be calibrated which is shown schematically in FIG. 1 by dash-dotted lines, is “inserted” into a receiving device 84 of the calibrating device 82, the receiving opening 48 of the carrier 46 being plugged onto bolts 40/2, which are on the frame 4 two end faces similar to the bolts 40 of the side frame 42 of the printing press are provided.
  • “Insert” here means pushing in, hanging in or putting down in such a way that the washing unit 30 is carried by the frame 4 and is automatically brought into a predetermined position relative to the frame 4.
  • a stop wall 86 of the calibration device 82 is provided instead of the cylinder 14 and forms a first reference point.
  • the Bolts 40/2 of the frame 4 are provided instead of the bolts 40 of the side frame 42 and form a second reference point.
  • the two reference points 86 and 40/2 of the winding stand 2 from FIG. 1 are at the same distance from one another as the cylinder 14 from the bolts 40 of the printing machine side frames 42.
  • each washing unit in the prior art was first set in the printing press in such a way that for a specific air pressure expanding the pressure element 32, a specific contact pressure of the pressure element 32 on the cylinder 14 results.
  • This setting of each washing unit 30 to the cylinder 14 assigned to it has not previously been the case possible to exchange the washing units of different cylinders with one another without having to readjust the washing units 30 relative to each cylinder.
  • the contact pressure exerted by the pressing element 32 on the cylinder 14 has so far been measured with a great deal of time in that a measuring plate was placed between the pressing element 32 and the cylinder 14 and this measuring plate was then pulled out of the gap between the pressing element 32 and the cylinder 14 using a tension measuring device has been.
  • the tensile measurement was a measure of the contact pressure.
  • This type of measurement can of course also be used with the calibration device 82. However, the measurement is much simpler if the first reference point 86 is provided with a pressure measuring device which indicates the pressure directly to the operator.
  • At least two pressure gauges 88 and 90 are preferably provided at an axial distance from one another. By using at least two axially spaced pressure measuring devices 88 and 90, it is possible to immediately recognize whether the contact pressure of the pressing element 32 is uniform or different over the entire length of the cylinder 14, so that a corresponding pressure correction can be carried out.
  • the pressure element 32 is pressed against the cylinder 14 by the air pressure generated in a pressure chamber 36.
  • the compressed air required for this is also required in the calibration device 82, which is why the winding station 2 is provided with a second compressed air connection 92 attached to the frame 4.
  • the first compressed air connection 60 of the washing unit 30 is connected to the second compressed air connection 92 of the winding station 2, and the latter 92 can be connected to a compressed air source 94.
  • a washing unit 30/2 is inserted into it, which is shorter than the washing unit 30 of FIG. 1.
  • an adapter 96 is provided to bridge the resulting distance from the bolts provided on both ends of the winding stand 2 40/2, which form the second reference point.
  • the adapter 96 is positioned by the bolt 40/2 and is provided with a bolt 40/3, which engages in the receiving opening 48 of the carrier 46 and positions the washing unit 30/2 on its stop surface 44 with reference to the stop wall 86.

Landscapes

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

Claims (8)

  1. Bobinoir pour tissus nettoyants de machines à imprimer qui, dans une unité de nettoyage (30), sont enroulés pour passer d'un rouleau de tissu propre (18) sur un rouleau de tissu sale (34) et qui, ce faisant, sur leur parcours entre les deux rouleaux, retirent la poussière de la surface périphérique (35) d'un corps rotatif (14), qui peut être un cylindre, un rouleau ou un tambour de la machine à imprimer concernée, présentant les caractéristiques suivantes :
    1.1. un premier dispositif formant palier (8), servant au montage rotatif d'un rouleau de réserve (10) pour tissu nettoyant (12), dont la largeur correspond sensiblement à la largeur du corps rotatif (14) à nettoyer et dont la longueur est un multiple de la longueur d'un tissu nettoyant (20) enroulé sur un rouleau de tissu propre (18) ;
    1.2. un deuxième dispositif formant palier (22) servant au montage rotatif d'un rouleau de tissu propre (18) parallèlement et de façon espacée vis-à-vis du rouleau de réserve (10) ;
    1.3. un premier dispositif d'entraînement (24) pour faire tourner le rouleau de tissu propre (18), afin d'enrouler une certaine longueur de tissu nettoyant en le faisant passer du rouleau de réserve (10) sur le rouleau de tissu propre (18) ;
    1.4. des moyens (26) permettant de séparer la longueur de tissu nettoyant (20) enroulée sur le rouleau de tissu propre (18) de la réserve (12) de tissu enroulé restant sur le rouleau de réserve (10) ;
       caractérisé en ce qu'
    1.5. est prévu un dispositif d'étalonnage (82) destiné à des unités de nettoyage (30), qui présentent respectivement un support (46) pour leur fixation sur des cadres latéraux (42) d'une machine à imprimer grâce à des moyens de fixation (40), au moins un élément d'appui (32) appuyant élastiquement le tissu nettoyant (20) contre le corps rotatif (14), et un organe de maintien (50), maintenant l'élément d'appui (32), qui est monté réglable (52, 58) par rapport au support (46), en ce que le dispositif d'étalonnage (82) comporte un premier point de référence (86) à la place du corps rotatif (14) et un deuxième point de référence, se présentant sous la forme de moyens de positionnement (40/2), à la place des moyens de fixation (40) des cadres latéraux (42) de la machine à imprimer, de telle sorte que, pour un nombre quelconque d'unités de nettoyage (30), la position de l'organe de maintien (50) d'élément d'appui par rapport au support (46) puisse être réglée de telle sorte que l'élément d'appui (32) de toutes les unités de nettoyage (30) appuie avec une même pression prédéterminée contre le premier point de référence (86).
  2. Bobinoir selon la revendication 1, caractérisé en ce que les unités de nettoyage (30) comportent chacune au moins une chambre d'air comprimé (36) permettant d'appuyer l'élément d'appui (32), au moyen d'air comprimé, sur le corps rotatif (14) ou sur le premier point de référence (86), et en ce que, pour toutes les unités de nettoyage (30), l'organe de maintien (50) d'élément d'appui est réglé, par rapport au support (46), de telle sorte que, lorsque règne une certaine pression dans la chambre d'air comprimé (36), la même pression de l'élément d'appui (32) contre le premier point de référence (86) est produite pour toutes les unités de nettoyage (30).
  3. Bobinoir selon la revendication 2, caractérisé en ce qu'est disposé, sur lui, un raccord d'air comprimé (92), sur lequel la chambre d'air comprimé (36) de l'unité de nettoyage (30) et une source d'air comprimé (94) sont susceptibles d'être branchées.
  4. Bobinoir selon l'une des revendications précédentes, caractérisé en ce qu'est prévu, au premier point de référence (86), un dispositif de mesure (88, 90) servant à mesurer la pression exercée par l'élément d'appui (32) sur le premier point de référence.
  5. Bobinoir selon l'une des revendications précédentes, caractérisé en ce qu'est prévu un dispositif de maintien (62) pour le maintien d'un rouleau de tissu sale (34), sur lequel est enroulé un tissu nettoyant (37) sale ; en ce que sont prévus des moyens de découpe (66, 67, 68) servant à découper le tissu nettoyant enroulé (37) sale le long du rouleau de tissu propre (34), pendant que celui-ci est maintenu par le dispositif de maintien (62) ; en ce qu'un dispositif récepteur (70) de tissu nettoyant est prévu sous le rouleau de tissu sale (34) maintenu, qui recueille les morceaux de tissu nettoyant enroulé sales qui se détachent du fait de leur découpe du rouleau de tissu sale (34).
  6. Bobinoir selon la revendication 5, caractérisé en ce que les moyens de découpe (62, 67, 68) présentent une lame de découpe (66) susceptible de se déplacer le long du rouleau de tissu sale (34) et des moyens d'entraînement à moteur (67, 68) permettant de déplacer la lame de découpe (66) le long du rouleau de tissu sale (34).
  7. Bobinoir selon la revendication 5 ou 6, caractérisé en ce que le dispositif de maintien (62) destiné au rouleau sale (34) est un troisième dispositif formant palier pour le montage rotatif d'un rouleau de tissu sale (34), en ce qu'un quatrième dispositif formant palier (76) pour le montage rotatif d'un rouleau collecteur (78) est prévu à distance et parallèlement au rouleau de tissu sale (34) du troisième dispositif formant palier (62), en ce qu'est prévu un deuxième dispositif d'entraînement (80) pour faire tourner le rouleau collecteur (78), afin d'enrouler le tissu nettoyant sali (64) du rouleau de tissu sale (34) sur le rouleau collecteur (78), le dispositif étant conçu de telle sorte qu'une pluralité de tissus nettoyants salis sont enroulés sur le rouleau collecteur (78).
  8. Procédé de montage d'unités de nettoyage (30) de machines à imprimer pour le nettoyage de corps rotatifs (14) dans des machines à imprimer, caractérisé en ce qu'au moins certaines des unités de nettoyage (30), avant d'être montées dans la machine à imprimer, sont étalonnées, à l'extérieur de celle-ci, dans un dispositif d'étalonnage (82) de telle sorte qu'elles produisent toutes une même pression d'appui sur les corps rotatifs (14), lorsqu'une pression d'air de même valeur est exercée sur les éléments d'appui (32) des unités de nettoyage (30), au moyen d'air comprimé.
EP95104493A 1994-03-26 1995-03-27 Bobinoir pour tissu nettoyant pour machines d'impression Expired - Lifetime EP0673768B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4410640A DE4410640A1 (de) 1994-03-26 1994-03-26 Wickelstand für Druckmaschinen-Waschtücher
DE4410640 1994-03-26

Publications (2)

Publication Number Publication Date
EP0673768A1 EP0673768A1 (fr) 1995-09-27
EP0673768B1 true EP0673768B1 (fr) 1997-10-15

Family

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Application Number Title Priority Date Filing Date
EP95104493A Expired - Lifetime EP0673768B1 (fr) 1994-03-26 1995-03-27 Bobinoir pour tissu nettoyant pour machines d'impression

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EP (1) EP0673768B1 (fr)
DE (2) DE4410640A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104369643B (zh) * 2014-09-30 2016-09-21 太仓通利机械设备有限公司 一种汽车窗帘生产设备
CN117566487B (zh) * 2024-01-17 2024-04-30 山东高速舜通路桥工程有限公司 公路养护混凝土覆膜回收装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1515289A (en) * 1920-07-07 1924-11-11 Tullis John Thomas Cloth measuring and cutting machine
US3132820A (en) * 1961-01-13 1964-05-12 Richard F Toll Bulk roof stock recoiler
DD227927A1 (de) * 1984-11-02 1985-10-02 Polygraph Leipzig Vorrichtung zur reinigung eines zylinders einer druckmaschine
JPH02215533A (ja) * 1989-02-17 1990-08-28 B J Trading Kk 印刷機のインキ供給ローラ洗浄装置
DE9014229U1 (fr) * 1990-10-13 1990-12-20 Vliesstoff Kasper Gmbh, 4050 Moenchengladbach, De

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Publication number Publication date
DE59500782D1 (de) 1997-11-20
DE4410640A1 (de) 1995-09-28
EP0673768A1 (fr) 1995-09-27

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