EP0074045A1 - Dispositif pour l'application de particules de poudre - Google Patents
Dispositif pour l'application de particules de poudre Download PDFInfo
- Publication number
- EP0074045A1 EP0074045A1 EP82107941A EP82107941A EP0074045A1 EP 0074045 A1 EP0074045 A1 EP 0074045A1 EP 82107941 A EP82107941 A EP 82107941A EP 82107941 A EP82107941 A EP 82107941A EP 0074045 A1 EP0074045 A1 EP 0074045A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- powder
- sheet
- powder particles
- gripper
- underside
- 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- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/057—Arrangements for discharging liquids or other fluent material without using a gun or nozzle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/06—Powdering devices, e.g. for preventing set-off
Definitions
- the invention relates to a device for applying powder particles by means of a gas flow generating spray device onto sheets of paper or the like printed in a printing press, which are transported by gripper carriages and endless gripper chains from a printing device of the printing press to a stack and are deposited there.
- the spraying or dusting device which generates the gas stream laden with powder is arranged between sections of the gripper chain which are moved in opposite directions, that is to say inside the area enclosed by this chain. Since the gripper chain rotates at a relatively high speed, for example 100 m / min or even more, and the gripper carriages holding the paper sheets are relatively bulky structures with great air resistance, strong air vortices form at the location of the spraying device, which spray the top of the sheet evenly by means of the gas powder emerging from the spraying device, which greatly impedes the powder particles which carry the gas stream.
- the delivery device 2 comprises, in a manner known per se, two endless gripper chains 5 which are arranged at a mutual spacing and which are connected by transverse gripper carriages. The length of these gripper carriages 6, measured transversely to the plane of the drawing in FIG. 1, and thus the distance between the two gripper chains 5, of which only a single chain is shown in FIG.
- the gripper carriages 6 are provided on their end faces with rollers 7 (FIG. 3) which run in corresponding guideways arranged on the machine housing 1.
- Each gripper carriage 6 has a gripper 8 which holds the sheet 3 to be transported at the front edge, so that each sheet is dragged along by the relevant gripper carriage 6 in the direction of arrow A to the stack 4.
- the empty gripper carriages return to the printing device in the direction of arrow B, where they are loaded again with printed sheets and then pass through the delivery device 2 in the direction of arrow A.
- the sheets 3 are dragged along by the gripper car 6 so that the printed sheet side in FIG. 1 and in particular on the stack 4 is directed upwards.
- the printed sheets In order to promote the drying of the printed sheets 3 on the stack 4 and to prevent smearing of the still damp printing ink when the sheets are stacked on top of one another in the stack 4, the printed sheets must be coated with powder, for example starch powder, before they are deposited.
- powder for example starch powder
- a powder dusting device is arranged between the gripper carriages 6 moving in opposite directions and thus inside the area enclosed by the endless chains 5, which is shown in dashed lines in FIG. 1 and provided with the reference number 9. From this device, the powder reaches the printed top of the sheet 3, which lies between the gripper chains 5 and the gripper car 6.
- each gripper car 6 has a considerable distance from the sheet top to be coated, which is unfavorable for even and lossless pollination.
- the gripper carriages running in the opposite direction at high speed in the area of the device 9 generate turbulence which, on the one hand, also hinders the uniform application of the powder and also triggers a carryover of the powder to places on the printing press where the powder is highly undesirable.
- the invention is based on the general idea of removing the spray device 9 from the area between the chains 5 and the gripper carriage 6 and arranging it outside the area wrapped around the chain, in such a way that pollination of the sheets of below on the - usually unprinted - underside of the sheet.
- a spray device arranged and functioning in this way is schematically provided with the reference number 11.
- Such a spray device could also be arranged as indicated in FIG. 1 by reference number 12. In this case, pollination does not take place vertically, but diagonally from below. In both cases, the powder or solid particles to be applied fly against the effect of gravity.
- FIG. 2 shows a nozzle 13 which is suitable for this purpose and widens towards its outlet end, from which a moderately turbulent cloud of smoke 14 emerges.
- FIG 3 shows a particularly preferred embodiment of a powder spraying device. This device is based on the idea that in order to better adhere the solid particles carried in the gas stream with the leading arc, the particles and the arc are each electrically charged with opposite polarity.
- FIG. 3 again shows part of the gripper chain 5, which is connected to a gripper carriage 6.
- a roller 7 of the gripper carriage 6 runs in a guide track (not shown).
- the actual gripper 8, which serves to clamp the sheet of paper 3, is also arranged on the gripper carriage 6. The whole arrangement again moves in the direction of arrow A.
- An electrostatic spraying device which is designated as a whole by the reference symbol 21, is arranged below the sheet 3 and at a very short distance from the underside thereof.
- This device comprises, in a housing, which is preferably made of insulating material, a channel 22 which extends over the entire width of the arc 3.
- the gas stream charged with powder is blown in at a moderate speed in the direction of arrow C.
- the channel 22 has an opening 27 directed transversely to the forward direction A of the sheet 3, which can be designed, for example, as a slot extending over the entire width of the sheet 3.
- a plurality of openings 27 lying next to one another in the direction of the arc width can also be used.
- the device 21 has a transverse channel 28, in which in the direction perpendicular to the drawing 3 a row of metal tips 29 is arranged.
- the metal tips 29 are connected to a high voltage source 31, which charges the tips 29 with a high voltage of certain polarity.
- a second row of electrodes formed by tips 32 is charged via a high voltage source 33 with high voltage of opposite polarity as the tips 29.
- the tips 32 are located in the path of the incoming gas stream carrying the powder particles in front of the opening 27.
- the trough 26 can be grounded.
- the spray device 21 functions in the following manner:
- the underside of the arc 3 advancing in the direction of arrow A is electrically charged with a certain polarity (for example positive) due to the corona discharges which form at the tips 29.
- the powder particles entering in the direction of arrow C receive an electrical charge of opposite polarity (for example negative) as they travel through the corona discharges which form at the tips 32.
- These charged particles pass the (slit-shaped) opening 27, they are attracted by the oppositely charged underside of the sheet 3 and held there, so that the underside 3 of the sheet is coated with a fine layer of powder.
- Excess powder gets into the tub 26 in the direction of arrow D due to the negative pressure generated at the outlet end 24. There is none over the opening 27 charged paper sheet is present, no charged powder emerges from the opening 27.
- the arrangement of the spray devices 11 and 12 on de and outside of that of the 5 enclosed area has the advantage that the spray devices 11, 12 almost be arranged on the underside of the sheet therefore sufficient to apply the powder Particles a gas stream of very low speed, which is unable to undesirably disperse the powder particles in the environment outside the sheet 3.
- the spray device 21 shown in FIG. 3 is not only suitable for powder dusting from below for sheets that are transported by a gripper device with gripper chains 5 and gripper carriage 6. In the case of other sheet conveying devices, the dusting with the device 21 shown in FIG. 3 could also easily take place from above.
- the electrode 32 with voltage source 33 shown in FIG. 3 can be omitted.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrostatic Spraying Apparatus (AREA)
- Discharge By Other Means (AREA)
- Adjustment And Processing Of Grains (AREA)
- Catching Or Destruction (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3135220 | 1981-09-05 | ||
DE19813135220 DE3135220A1 (de) | 1981-09-05 | 1981-09-05 | Vorrichtung zum aufbringen von puderteilchen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0074045A1 true EP0074045A1 (fr) | 1983-03-16 |
Family
ID=6140960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82107941A Withdrawn EP0074045A1 (fr) | 1981-09-05 | 1982-08-28 | Dispositif pour l'application de particules de poudre |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0074045A1 (fr) |
JP (1) | JPS5871165A (fr) |
DD (1) | DD203500A5 (fr) |
DE (1) | DE3135220A1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2545968A1 (fr) * | 1983-05-10 | 1984-11-16 | Canon Kk | Appareil d'enregistrement |
EP0695584A2 (fr) | 1994-08-06 | 1996-02-07 | PLATSCH, Hans G. | Appareil de poudrage |
EP0839650A1 (fr) * | 1996-10-31 | 1998-05-06 | MAN Roland Druckmaschinen AG | Appareil de poudrage |
EP0839651A1 (fr) * | 1996-10-31 | 1998-05-06 | MAN Roland Druckmaschinen AG | Procédé pour saupoudrer, spécialement un matériau en feuille imprimé dans une machine d'impression |
EP0847856A2 (fr) * | 1996-12-10 | 1998-06-17 | Heidelberger Druckmaschinen Aktiengesellschaft | Dispositif pour saupoudrer des feuilles |
EP0947321A1 (fr) * | 1998-03-24 | 1999-10-06 | MAN Roland Druckmaschinen AG | Poudreur dans une machine d'impression |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3217779A1 (de) * | 1982-05-12 | 1983-11-17 | Weitmann & Konrad GmbH & Co KG, 7022 Leinfelden-Echterdingen | Vorrichtung zur steuerung des puderbestaeubers in einer druckmaschine |
JPH0498140U (fr) * | 1991-01-23 | 1992-08-25 | ||
JPH082640B2 (ja) * | 1991-08-23 | 1996-01-17 | 有限会社島田機械サービス | 浮き出し加工用粉末付着装置 |
DE19632899A1 (de) * | 1996-08-16 | 1998-02-19 | Weitmann & Konrad Fa | Vorrichtung zum Bestäuben bewegter Gegenstände, insbesondere bedruckter Papierbögen |
DE19707157B4 (de) * | 1997-02-22 | 2006-04-06 | Weitmann & Konrad Gmbh & Co Kg | Vorrichtung zum Bestäuben von bewegten flächigen Produkten |
DE29805248U1 (de) * | 1998-03-24 | 1998-05-20 | MAN Roland Druckmaschinen AG, 63075 Offenbach | Bestäubungseinrichtung in einer Druckmaschine |
DE19836022A1 (de) * | 1998-08-10 | 2000-02-17 | Weitmann & Konrad Fa | Vorrichtung zum Bestäuben von bedruckten Bogen aus Papier o. dgl. |
DE102005032801B4 (de) * | 2005-07-14 | 2010-07-01 | Manroland Ag | Verfahren und Vorrichtung zum Bepudern von Bedruckstoffen |
DE102007027473A1 (de) | 2007-06-14 | 2008-12-18 | Manroland Ag | Drucktechnisch hergestellte funktionale Komponenten |
US20120275805A1 (en) * | 2009-09-14 | 2012-11-01 | Cosmotech Co., Ltd. | Powder Spray System For Printing |
DE202009016037U1 (de) | 2009-11-24 | 2010-02-25 | Manroland Ag | Vorrichtung zum Bepudern von Bedruckstoffen |
DE102010043568A1 (de) * | 2010-11-08 | 2012-05-10 | Weitmann & Konrad Gmbh & Co Kg | Vorrichtung zum Aufbringen von Puder auf Bedruckstoffe |
CN102649346B (zh) | 2011-02-28 | 2017-08-29 | 海德堡印刷机械股份公司 | 从下面给经印刷和/或涂有亮油的页张撒粉或扑粉的设备 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2110219A (en) * | 1937-07-31 | 1938-03-08 | Binks Mfg Co | Method of preventing offset in printing |
US3556519A (en) * | 1967-06-23 | 1971-01-19 | Leo Keller | Method and apparatus for stacking paper sheets or the like |
GB1459834A (en) * | 1972-02-22 | 1976-12-31 | Owens Corning Fiberglass Corp | Impregnating strands formed from a plurality of non-conducting filaments |
-
1981
- 1981-09-05 DE DE19813135220 patent/DE3135220A1/de not_active Withdrawn
-
1982
- 1982-08-28 EP EP82107941A patent/EP0074045A1/fr not_active Withdrawn
- 1982-09-02 DD DD24298182A patent/DD203500A5/de unknown
- 1982-09-03 JP JP15285982A patent/JPS5871165A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2110219A (en) * | 1937-07-31 | 1938-03-08 | Binks Mfg Co | Method of preventing offset in printing |
US3556519A (en) * | 1967-06-23 | 1971-01-19 | Leo Keller | Method and apparatus for stacking paper sheets or the like |
GB1459834A (en) * | 1972-02-22 | 1976-12-31 | Owens Corning Fiberglass Corp | Impregnating strands formed from a plurality of non-conducting filaments |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2545968A1 (fr) * | 1983-05-10 | 1984-11-16 | Canon Kk | Appareil d'enregistrement |
EP0695584A2 (fr) | 1994-08-06 | 1996-02-07 | PLATSCH, Hans G. | Appareil de poudrage |
EP0695584A3 (fr) * | 1994-08-06 | 1997-04-09 | Hans G Platsch | Appareil de poudrage |
EP0839650A1 (fr) * | 1996-10-31 | 1998-05-06 | MAN Roland Druckmaschinen AG | Appareil de poudrage |
EP0839651A1 (fr) * | 1996-10-31 | 1998-05-06 | MAN Roland Druckmaschinen AG | Procédé pour saupoudrer, spécialement un matériau en feuille imprimé dans une machine d'impression |
EP0847856A2 (fr) * | 1996-12-10 | 1998-06-17 | Heidelberger Druckmaschinen Aktiengesellschaft | Dispositif pour saupoudrer des feuilles |
EP0847856A3 (fr) * | 1996-12-10 | 1998-12-30 | Heidelberger Druckmaschinen Aktiengesellschaft | Dispositif pour saupoudrer des feuilles |
US6038998A (en) * | 1996-12-10 | 2000-03-21 | Heidelberger Druckmaschinen Ag | Device for applying powder to sheets |
EP0947321A1 (fr) * | 1998-03-24 | 1999-10-06 | MAN Roland Druckmaschinen AG | Poudreur dans une machine d'impression |
Also Published As
Publication number | Publication date |
---|---|
DE3135220A1 (de) | 1983-03-17 |
JPS5871165A (ja) | 1983-04-27 |
DD203500A5 (de) | 1983-10-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0074045A1 (fr) | Dispositif pour l'application de particules de poudre | |
DE3411029C2 (fr) | ||
DE4207118C2 (de) | Bestäubungsgerät | |
CH622444A5 (fr) | ||
CH660569A5 (de) | Verfahren zum befeuchten eines plattenzylinders einer offset-druckmaschine und offset-druckmaschine. | |
EP0609693B1 (fr) | Dispositif pour capter aerosol vagabond dans une machine d'impression rotative | |
DE19751972A1 (de) | Vorrichtung zur Bestäubung von Bogen | |
EP1105295B1 (fr) | Dispositif de poudrage de feuilles imprimees a l'aide d'une charge electrostatique | |
EP2042316B1 (fr) | Dispositif de poudrage | |
DE2446022B2 (de) | Vorrichtung zum elektrostatischen Beschichten von Gegenständen mit flüssigem oder pulverförmigem Beschichtungsmaterial | |
WO2010066224A2 (fr) | Procédé et dispositif pour appliquer sans contact un vernis d'impression uv sur un support d'impression | |
DE19648227A1 (de) | Verfahren und Vorrichtung zum Bestäuben von Produkten, insbesondere Druckprodukten | |
DE102005039078B3 (de) | Vorrichtung und Verfahren zum Bestäuben von bedruckten Bogen oder einer Endlosbahn mit Puder | |
EP0695584A2 (fr) | Appareil de poudrage | |
WO1997033753A1 (fr) | Dispositif pour saupoudrer des produits d'impression | |
DE4405549A1 (de) | Vorrichtung zum Auftragen von Pulver | |
DE19836018A1 (de) | Verfahren und Vorrichtung zum Bestäuben von bedruckten Bogen | |
DE19901670A1 (de) | Verfahren und Vorrichtung zum Sauberhalten und/oder Reinigen einer Bogenauslage einer Bogenoffsetdruckmaschine | |
DE102008047713B4 (de) | Verfahren und Vorrichtung zum Aufbringen von Puder auf einen bedruckten Bogen oder eine bedruckte Bahn | |
WO1998007568A1 (fr) | Systeme de saupoudrage d'objets en mouvement, notamment de feuilles de papier imprimees | |
DE19713361A1 (de) | Verfahren und Vorrichtung zum abschmierfreien Führen eines bedruckten Bogens auf einem bogenführenden Zylinder einer Druckmaschine, insbesondere auf einer Wendetrommel einer Bogenrotations-Offsetdruckmaschine im Schöndruckbetrieb | |
EP1266093B1 (fr) | Dispositif d'application et procede | |
DE4224443A1 (de) | Farb- oder Feuchtwerk | |
DE19812711C2 (de) | Bestäubungseinrichtung in einer Druckmaschine | |
DE679390C (de) | Vorrichtung zum Foerdern von Bogen in Falzmaschinen |
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 |
Designated state(s): AT BE CH FR GB IT LI LU NL SE |
|
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: 19840223 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MUZ, EDWIN, DR. Inventor name: WEITMANN, HEINZ |