WO1998043904A1 - Verfahren und vorrichtung zum elektrostatischen aufladen - Google Patents
Verfahren und vorrichtung zum elektrostatischen aufladen Download PDFInfo
- Publication number
- WO1998043904A1 WO1998043904A1 PCT/EP1997/006387 EP9706387W WO9843904A1 WO 1998043904 A1 WO1998043904 A1 WO 1998043904A1 EP 9706387 W EP9706387 W EP 9706387W WO 9843904 A1 WO9843904 A1 WO 9843904A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roller
- shaft
- rollers
- axis
- gap
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/513—Modifying electric properties
- B65H2301/5132—Bringing electrostatic charge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/10—Rollers
- B65H2404/14—Roller pairs
- B65H2404/145—Roller pairs other
- B65H2404/1451—Pressure
Definitions
- the invention relates to a method and a device for electrostatically charging the two outer sides of at least one material web with charges of opposite polarity, before the further processing of the at least one material web, which is guided through the gap of a pair parallel to one another and at a short distance from one another.
- Such a method and a device for electrostatic charging are known (DE-31 17 419 AI).
- several material webs are brought together to form a strand and only the two outer sides are charged by means of a device designed as a corona charging electrodes for electrostatic charging after the first pair of rollers by means of a high-voltage source of 30 kV.
- a disadvantage of this known device is the spatially not very targeted charging of the two outer sides of the material webs. A large part of the charged particles vagabundate in the entire area where the charging takes place. This results in a poor charging efficiency. In addition, there is a risk that the corona charging electrodes will become dirty and therefore fail to function in unfavorable environmental conditions. The cleaning effort can be very considerable.
- the invention has for its object to propose a generic method and a generic device, by means of which a more targeted charging with better efficiency is possible.
- the roller can be charged over the surface by means of a so-called contact roller (DE-38 23 739 AI), or via brushes known per se or a sliding contact.
- each roller having a limited electrically conductive (so-called semiconducting) coating over a steel jacket and - for electrically charging the limited conductive coating -
- the steel jacket of each roller can be connected to a positive or negative high voltage source.
- the device according to the invention because of the supply of the voltage from the inside, there is in particular the subsequent installation in existing systems for processing material webs, preferably made of plastic or paper possible with a high voltage source of 3 to 7 kV. This means that considerably lower voltages are also used with reference to the prior art.
- the axis or shaft of the roller is expediently connected to the steel jacket in an electrically conductive manner and is electrically insulated from the machine frame for the roller.
- the electrical high voltage is applied to the axle or shaft, which has a connection for this purpose. This can either be a fixed connection on the axle or a thrust bearing to be arranged on the end face of the shaft.
- a primary coil is fixed with respect to the machine frame and concentric with the axis or shaft of the roller on one end face of which a secondary coil with this is fixed all around and concentrically with the axis or shaft of the roller one of which is connected to the axle or shaft and the other of which is connected to the steel jacket via a rectifier circuit.
- Figure 1 shows a first embodiment of the device according to the invention, in a schematic cross, sectional and partially broken representation
- FIG. 2 shows a second embodiment of the device according to the invention, in schematic cross section and partially broken away simplified illustration
- FIG. 3 shows a third embodiment of the device according to the invention, in a simplified representation, partly broken away and broken away.
- Each of the two rollers 5 according to FIG. 1 has a fixed axis 6 in the first embodiment according to FIG. 1 as well as a steel jacket 7, over which a surface with limited conductivity, designated as 8, is arranged, which is electrically chargeable. Between the axis 6 and the steel jacket 7, a ball bearing, generally designated 9, is provided. A gap 50 is present between the two rollers arranged parallel to one another.
- the axis of the roller 5 is mounted in a machine stand, generally designated 10, in an electrical insulation, generally designated 11.
- the distances 12 and 13 are sufficient to prevent discharges or voltage flashovers.
- the end face 16 of the axis 6 is connected to a generator, denoted overall by 15, and a measuring device 16 having a connection 17, the line leading to the connection 17 being grounded via a resistor 18.
- the machine stand 10 is, as shown schematically by 1 9 , also grounded.
- the exemplary embodiment according to FIG. 2 differs from that according to FIG. 1, as only one of the two rollers is shown and the axis 6 there is now designed as a shaft 20 which is rigidly connected to the steel jacket 7 via an electrically conductive intermediate piece 21.
- the shaft 20 of the machine stand 10 is connected either via an electrically insulating ball bearing 22 or a separate insulation 11. It is also possible to use a normal, electrically conductive ball bearing and to provide an electrically insulating sleeve 11 between it and the machine stand 10.
- a pressure bearing designated overall by 23, is provided as a connection, which is electrically conductive and on the outside of which the connection 17 of the high-voltage generator 15 is attached via the measuring device 16.
- the further, third embodiment according to FIG. 3 has also two rollers to form a gap, of which, however, for reasons of better clarity, only one roller such as that shown in FIGS. 1 and 2 is shown. Furthermore, concentric to the shaft 6 of the roller 5, in addition to the latter on the one end face 112, there is a first receiving device, generally designated 113, as a magnetizable core with a secondary coil 114 and a second secondary coil 115, each concentric to the shaft 6.
- a further receiving device 116 is arranged concentrically with the shaft 6 as a magnetizable core for receiving a primary coil 117 with electrical connections 1 and 2, which is also concentric with the shaft 6, and a second primary coil 18 with electrical connections 3 and 4 arranged between the latter and the shaft 6.
- the receiving device 16 can be rotated with respect to the shaft 6 by means of a pin 19 which engages an anchorage 120 which is fixed with respect to the machine frame and has on its inside a ball bearing designated as 121 overall, so that it can rotate, but the magnetizable core due to the pin 119 and the anchoring 120 can be held in a rotationally fixed manner with respect to the first receiving device 113.
- a rectifier circuit 122 and a smoothing circuit 123 are also provided on the secondary side of the first receiving device 113, and their output is connected to the limited conductive coating 8.
- the electrical connection 2 of the primary coil 117 is grounded, whereas the electrical connection 1 can be connected to an AC voltage generator.
- the two electrical connections 3 and 4 of the second primary coil 118 are to the inputs of a control circuit connectable, which can change the size of the output voltage and / or its frequency - in a manner known per se.
- the secondary coil 114 is grounded on one side. The same also applies to the second secondary coil 115. Both secondary coils 114, 115 are connected in parallel.
- the rectifier circuit 122 for rectifying the alternating current is initially arranged downstream of both coils. After the rectifier circuit 122 is the smoothing circuit 123, e.g. arranged in the form of an LC filter, as known per se. The output of the smoothing circuit 123 is connected to the limited conductive coating 8 of the roller 5.
- the secondary coil 114 is moved relative to the primary coil 117. Via the air gap between the two magnetizable cores of the receiving device 113 and 116, the alternating voltage of the primary coil 117 can induce a secondary voltage in the secondary coil 114, which is rectified via the rectifier circuit 122 and the smoothing circuit 123 is supplied smoothly to the limited conductive coating 8.
- the induced voltage of the secondary coil 114 is taken off by the second secondary coil 115 and induced on the second primary coil 118 in the opposite sense, which with its electrical connections 3 and 4 can be connected to a control circuit which can control the AC voltage source in such a way that it is conductive to a limited extent Covering 8 of roller 5 always has the same DC voltage.
Landscapes
- Elimination Of Static Electricity (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Treatment Of Fiber Materials (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97950196A EP0923500B1 (de) | 1997-04-02 | 1997-11-16 | Verfahren und vorrichtung zum elektrostatischen aufladen |
DE59707978T DE59707978D1 (de) | 1997-04-02 | 1997-11-16 | Verfahren und vorrichtung zum elektrostatischen aufladen |
JP53808798A JP3258034B2 (ja) | 1997-04-02 | 1997-11-16 | 静電帯電方法及びその装置 |
US09/142,828 US6159555A (en) | 1997-04-02 | 1997-11-16 | Method and device for electrostatic charging |
AT97950196T ATE222210T1 (de) | 1997-04-02 | 1997-11-16 | Verfahren und vorrichtung zum elektrostatischen aufladen |
AU53224/98A AU736011B2 (en) | 1997-04-02 | 1997-11-16 | Method and device for electrostatic charging |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19713662.1 | 1997-04-02 | ||
DE19713662A DE19713662A1 (de) | 1997-04-02 | 1997-04-02 | Verfahren und Vorrichtung zum elektrostatischen Aufladen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998043904A1 true WO1998043904A1 (de) | 1998-10-08 |
Family
ID=7825271
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/006387 WO1998043904A1 (de) | 1997-04-02 | 1997-11-16 | Verfahren und vorrichtung zum elektrostatischen aufladen |
PCT/EP1998/001855 WO1998043905A1 (de) | 1997-04-02 | 1998-03-31 | Verfahren und vorrichtung zum elektrostatischen aufladen |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/001855 WO1998043905A1 (de) | 1997-04-02 | 1998-03-31 | Verfahren und vorrichtung zum elektrostatischen aufladen |
Country Status (9)
Country | Link |
---|---|
US (2) | US6159555A (de) |
EP (2) | EP0923500B1 (de) |
JP (2) | JP3258034B2 (de) |
AT (2) | ATE222210T1 (de) |
AU (2) | AU736011B2 (de) |
DE (4) | DE29723999U1 (de) |
DK (1) | DK0971851T3 (de) |
ES (2) | ES2181044T3 (de) |
WO (2) | WO1998043904A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6705499B1 (en) | 1999-03-19 | 2004-03-16 | Koenig & Bauer Aktiengesellschaft | Rollers for guiding paper webs |
US6822844B2 (en) | 1997-04-18 | 2004-11-23 | Koenig & Bauer Aktiengesellschaft | Device for electrostatic charging of a multilayer paper web |
EP1702874A2 (de) * | 2005-03-18 | 2006-09-20 | Asselin-Thibeau | Method and device of transporting a non-woven web with electrostatic charge in at least an area with a dimension smaller than the width of said web |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29723999U1 (de) * | 1997-04-02 | 1999-12-09 | Eltex Elektrostatik Gmbh | Vorrichtung zum elektrostatischen Aufladen |
DE19860034A1 (de) * | 1998-12-23 | 2000-06-29 | Sebald U E | Verfahren und Vorrichtung zur Herstellung eines gefalzten Druckproduktes |
DE20101202U1 (de) * | 2000-05-16 | 2001-05-10 | Spengler Electronic Ag Biel Be | Vorrichtung zum Vereinigen von mindestens zwei Papierbahnen zu einem Papierstrang |
DE10043211A1 (de) | 2000-09-01 | 2002-03-14 | Heidelberger Druckmasch Ag | Einrichtung zur elektrischen Isolation rotierender Bauteile in Rotationsdruckmaschinen |
DE10214867A1 (de) * | 2002-04-04 | 2003-10-16 | Mitex Gummifabrik Hans Knott G | Vorrichtung zur drehbaren Lagerung einer Walze in einer Maschine |
DE10305606A1 (de) * | 2003-02-11 | 2004-08-19 | Voith Paper Patent Gmbh | Maschine zur Herstellung einer Faserstoffbahn |
DE102004032067A1 (de) * | 2004-07-01 | 2006-01-19 | Eltex-Elektrostatik Gmbh | Wickelvorrichtung |
US8559156B2 (en) | 2008-06-03 | 2013-10-15 | Illinois Tool Works Inc. | Method and apparatus for charging or neutralizing an object using a charged piece of conductive plastic |
US8743526B2 (en) * | 2011-03-04 | 2014-06-03 | Victor Mayorkis | Electrostatic roller apparatus and a system for electrostatically supporting an object |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3773234A (en) * | 1971-12-27 | 1973-11-20 | Iwatsu Electric Co Ltd | Apparatus for supply of electro-insulating sheet |
DE3117419A1 (de) | 1980-05-06 | 1982-04-01 | Walter Spengler | Verfahren zum zusammentragen von buendeln aus elektrisch isolierenden bogenfoermigen haelftig gefalteten substratmaterialien |
JPS62244860A (ja) * | 1986-04-15 | 1987-10-26 | Inahata Kenkyusho:Kk | 静電吸着ロ−ル装置 |
EP0378350A2 (de) * | 1989-01-13 | 1990-07-18 | Abisare Co., Ltd. | Verfahren zum Transportieren eines Papierbogens |
WO1993004235A1 (en) * | 1991-08-27 | 1993-03-04 | Beloit Technologies, Inc. | Roll cover apparatus |
US5605607A (en) * | 1995-03-15 | 1997-02-25 | Avery Dennison Corporation | Web feeder with controlled electrostatic force and method |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1311673A (en) * | 1969-03-12 | 1973-03-28 | Masson Scott Thrissell Eng Ltd | Methods and apparatus for electrostatic printing or copying |
US3876917A (en) * | 1973-03-26 | 1975-04-08 | Bell & Howell Co | Electrostatic charging apparatus |
US4056314A (en) * | 1976-06-04 | 1977-11-01 | Xerox Corporation | Liquid ink imaging system |
DE2754179C2 (de) * | 1977-12-06 | 1984-09-20 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg | Einer Rollenrotationsdruckmaschine nachgeschaltete Bearbeitungsstation mit einer Bahnführungseinrichtung |
JPH0237835A (ja) * | 1988-07-27 | 1990-02-07 | Fujitsu Ltd | 立上り・立下り時間調節回路及び方法 |
JPH0465088A (ja) * | 1990-07-03 | 1992-03-02 | Fuji Photo Film Co Ltd | ウエブ帯電用装置 |
FR2667267A1 (fr) * | 1990-09-27 | 1992-04-03 | Mira Sarl | Dispositif d'assistance electrostatique pour la conception de fascicules, cahiers ou analogues. |
JPH0786727B2 (ja) * | 1991-05-14 | 1995-09-20 | 富士ゼロックス株式会社 | 記録シート搬送装置 |
FR2677301B1 (fr) * | 1991-06-05 | 1993-12-24 | Mira Sarl | Dispositif d'assistance electrostatique pour machine d'impression notamment a heliogravure. |
US5369424A (en) * | 1991-06-06 | 1994-11-29 | Mita Industrial Co., Ltd. | Image-forming apparatus |
DE9218818U1 (de) * | 1992-02-18 | 1995-08-31 | Eltex Elektrostatik Gmbh | Presseur |
DE9400931U1 (de) * | 1994-01-20 | 1994-03-17 | Dettke Hubertus | Vorrichtung zum elektrostatischen Fixieren eines mehrlagigen Flachmaterials |
DE9419540U1 (de) * | 1994-12-06 | 1995-01-26 | Pogatzki Volkmar W Dr | Rotationstiefdruckwerk mit spannungsbeaufschlagtem Presseur |
DE29517139U1 (de) * | 1995-10-27 | 1995-12-21 | Dettke Hubertus | Vorrichtung zum elektrostatischen Fixieren eines mehrlagigen Flachmaterials |
DE29723999U1 (de) * | 1997-04-02 | 1999-12-09 | Eltex Elektrostatik Gmbh | Vorrichtung zum elektrostatischen Aufladen |
-
1997
- 1997-04-02 DE DE29723999U patent/DE29723999U1/de not_active Expired - Lifetime
- 1997-04-02 DE DE19713662A patent/DE19713662A1/de not_active Withdrawn
- 1997-11-16 AT AT97950196T patent/ATE222210T1/de active
- 1997-11-16 JP JP53808798A patent/JP3258034B2/ja not_active Expired - Fee Related
- 1997-11-16 ES ES97950196T patent/ES2181044T3/es not_active Expired - Lifetime
- 1997-11-16 AU AU53224/98A patent/AU736011B2/en not_active Ceased
- 1997-11-16 US US09/142,828 patent/US6159555A/en not_active Expired - Lifetime
- 1997-11-16 DE DE59707978T patent/DE59707978D1/de not_active Expired - Lifetime
- 1997-11-16 WO PCT/EP1997/006387 patent/WO1998043904A1/de active IP Right Grant
- 1997-11-16 EP EP97950196A patent/EP0923500B1/de not_active Expired - Lifetime
-
1998
- 1998-03-31 WO PCT/EP1998/001855 patent/WO1998043905A1/de not_active Application Discontinuation
- 1998-03-31 AT AT98917100T patent/ATE210593T1/de not_active IP Right Cessation
- 1998-03-31 DE DE59802440T patent/DE59802440D1/de not_active Revoked
- 1998-03-31 JP JP54115398A patent/JP3284503B2/ja not_active Expired - Fee Related
- 1998-03-31 DK DK98917100T patent/DK0971851T3/da active
- 1998-03-31 EP EP98917100A patent/EP0971851B1/de not_active Revoked
- 1998-03-31 US US09/402,253 patent/US6445562B1/en not_active Expired - Fee Related
- 1998-03-31 AU AU70425/98A patent/AU7042598A/en not_active Abandoned
- 1998-03-31 ES ES98917100T patent/ES2169509T3/es not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3773234A (en) * | 1971-12-27 | 1973-11-20 | Iwatsu Electric Co Ltd | Apparatus for supply of electro-insulating sheet |
DE3117419A1 (de) | 1980-05-06 | 1982-04-01 | Walter Spengler | Verfahren zum zusammentragen von buendeln aus elektrisch isolierenden bogenfoermigen haelftig gefalteten substratmaterialien |
JPS62244860A (ja) * | 1986-04-15 | 1987-10-26 | Inahata Kenkyusho:Kk | 静電吸着ロ−ル装置 |
EP0378350A2 (de) * | 1989-01-13 | 1990-07-18 | Abisare Co., Ltd. | Verfahren zum Transportieren eines Papierbogens |
WO1993004235A1 (en) * | 1991-08-27 | 1993-03-04 | Beloit Technologies, Inc. | Roll cover apparatus |
US5605607A (en) * | 1995-03-15 | 1997-02-25 | Avery Dennison Corporation | Web feeder with controlled electrostatic force and method |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 012, no. 120 (M - 685) 14 April 1988 (1988-04-14) * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6822844B2 (en) | 1997-04-18 | 2004-11-23 | Koenig & Bauer Aktiengesellschaft | Device for electrostatic charging of a multilayer paper web |
US6705499B1 (en) | 1999-03-19 | 2004-03-16 | Koenig & Bauer Aktiengesellschaft | Rollers for guiding paper webs |
US6821240B1 (en) | 1999-03-19 | 2004-11-23 | Koenig & Bauer Aktiengesellschaft | Longitudinal folding device |
US6929710B1 (en) | 1999-03-19 | 2005-08-16 | Koenig & Bauer Aktiengesellschaft | Method and device for winding up at least one paper web |
US7066368B1 (en) | 1999-03-19 | 2006-06-27 | Koenig & Bauer Aktiengesellschaft | Paper web draw-in device for a web-fed printing press |
EP1702874A2 (de) * | 2005-03-18 | 2006-09-20 | Asselin-Thibeau | Method and device of transporting a non-woven web with electrostatic charge in at least an area with a dimension smaller than the width of said web |
FR2883267A1 (fr) * | 2005-03-18 | 2006-09-22 | Thibeau Soc Par Actions Simpli | Procede et systeme de transport d'une bande de non-tisse avec maintien electrostatique dans au moins une zone de dimension inferieure a la largeur de ladite bande |
EP1702874A3 (de) * | 2005-03-18 | 2007-05-30 | Asselin-Thibeau | Method and device of transporting a non-woven web with electrostatic charge in at least an area with a dimension smaller than the width of said web |
Also Published As
Publication number | Publication date |
---|---|
US6445562B1 (en) | 2002-09-03 |
DE29723999U1 (de) | 1999-12-09 |
ATE222210T1 (de) | 2002-08-15 |
EP0971851B1 (de) | 2001-12-12 |
AU7042598A (en) | 1998-10-22 |
ES2181044T3 (es) | 2003-02-16 |
EP0971851A1 (de) | 2000-01-19 |
DK0971851T3 (da) | 2002-04-08 |
EP0923500B1 (de) | 2002-08-14 |
DE59802440D1 (de) | 2002-01-24 |
JP3258034B2 (ja) | 2002-02-18 |
JP2000509697A (ja) | 2000-08-02 |
JP2000505032A (ja) | 2000-04-25 |
ATE210593T1 (de) | 2001-12-15 |
EP0923500A1 (de) | 1999-06-23 |
US6159555A (en) | 2000-12-12 |
ES2169509T3 (es) | 2002-07-01 |
AU5322498A (en) | 1998-10-22 |
DE19713662A1 (de) | 1998-10-08 |
JP3284503B2 (ja) | 2002-05-20 |
AU736011B2 (en) | 2001-07-26 |
DE59707978D1 (de) | 2002-09-19 |
WO1998043905A1 (de) | 1998-10-08 |
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