EP3017873A1 - Systeme de revetement d'objets - Google Patents

Systeme de revetement d'objets Download PDF

Info

Publication number: EP3017873A1
Authority: EP; European Patent Office
Prior art keywords: isolation; drive; coating system; channel; coating
Prior art date: 2014-11-08
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.): Granted

Application number

EP15003164.9A

Other languages

German (de)

English (en)

Other versions

EP3017873B1 (fr

Inventor

Ralph Meier

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.)

Eisenmann SE

Original Assignee

Eisenmann SE

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.)

2014-11-08

Filing date

2015-11-04

Publication date

2016-05-11

2015-11-04 Application filed by Eisenmann SE filed Critical Eisenmann SE

2016-05-11 Publication of EP3017873A1 publication Critical patent/EP3017873A1/fr

2021-04-07 Application granted granted Critical

2021-04-07 Publication of EP3017873B1 publication Critical patent/EP3017873B1/fr

Status Active legal-status Critical Current

2035-11-04 Anticipated expiration legal-status Critical

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
- B05B5/16—Arrangements for supplying liquids or other fluent material
- B05B5/1608—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive
- B05B5/1675—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive the supply means comprising a piston, e.g. a piston pump
- 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
- B05B5/16—Arrangements for supplying liquids or other fluent material
- B05B5/1608—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive
- B05B5/1616—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive and the arrangement comprising means for insulating a grounded material source from high voltage applied to the material
- B05B5/1625—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive and the arrangement comprising means for insulating a grounded material source from high voltage applied to the material the insulating means comprising an intermediate container alternately connected to the grounded material source for filling, and then disconnected and electrically insulated therefrom
- B05B5/1633—Arrangements for supplying liquids or other fluent material the liquid or other fluent material being electrically conductive and the arrangement comprising means for insulating a grounded material source from high voltage applied to the material the insulating means comprising an intermediate container alternately connected to the grounded material source for filling, and then disconnected and electrically insulated therefrom the arrangement comprising several supply lines arranged in parallel, each comprising such an intermediate container
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
- B05B12/1481—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet comprising pigs, i.e. movable elements sealingly received in supply pipes, for separating different fluids, e.g. liquid coating materials from solvent or air
- 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
- B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
- B05B5/0403—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member
- B05B5/0407—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member with a spraying edge, e.g. like a cup or a bell

Definitions

Such coating systems for example, in the automotive industry, articles such as vehicle bodies or body parts are coated with the aid of the electrostatically operating application device.
the coating material e.g. a paint
the coating material is thereby discharged from the dispenser and exposed to an electric field in which the dispensed coating material is ionized and transported due to electrostatic forces to the object, which, for this purpose, e.g. is at ground potential.
Such an application device may be, for example, a high-rotation atomizer, in which the delivery device comprises a rotating bell cup, from which smallest droplets of paint are thrown off, so that a paint mist is formed.
An input valve device is in practice a so-called color changer, which is fed in a conventional manner from ring lines with different media. If an object with a different color is to be painted than the previously coated object, a must Color changes are performed.
a coating system of the type initially mentioned often comprises two supply lines, so that alternating operation can take place. In practice, this means that the application device is fed from one supply line with a first coating material, while the other supply line is prepared using another coating material, so that a color change can be carried out in a short time.
the lines in the direction of the application device away during the coating process build an insulation distance and this be clean and dry at least over a sufficiently long section.
the lines are made accordingly from an electrically insulating material.
the insulation section is thus constructed at least mechanically supported. It has been recognized that this is more effective and faster compared to cleaning and drying a fluid only line.
the clearing body is not driven by a fluid medium in its isolation movement, but moved mechanically. This guarantees a clearly defined position of the clearing body.
the isolation duct comprises a parking space for the reaming body, wherein, viewed in the direction of the storage container, a line section of the inlet duct radially faces the parking space and separates the isolation duct from the isolation duct.
a line section which may still be filled with conductive material even with built-insulation distance, without affecting the reliability negatively.
Drive element of the drive device is a thrust element which is connected to a thrust shaft or a push rod.
a push shaft can be flexed flexibly in contrast to a push rod.
the pusher increases in particular the contact surface of the reaming body when it is pushed.
the drive element of the drive device may be a push shaft or a push rod, which is immovably connected to the broaching body.
the thrust shaft or the push rod is guided through a passage opening in an end wall of the parking space into a drive space which is arranged next to the parking space where the thrust shaft or the push rod is coupled to a drive unit.
the drive unit is a winding device, by means of which the thrust shaft from the drive space in the insulation channel can be unwound and wound out of the insulation channel into the drive space.
the drive unit is a cylinder device in which the drive space forms a cylinder space and through which the push rod is movable into or out of the isolation channel.
the push rod can also be moved via an electrically acting linear unit.
the isolation channel, the drive space and the drive unit are accommodated in an insulation housing. This allows the components optionally as Assembly are inserted into a line, in which case the necessary connection options are available.
this comprises a pig pipe which extends between a starting pig station and a destination pig station.
the inlet duct defines a connection portion connecting the target pig station and the receiver tank, the isolation duct being a portion of the connection portion.
the input valve device is preferably a color changer.
10 denotes a total of a coating system for coating objects, such as vehicle bodies or their attachments, which are not specifically shown.
the coating system 10 comprises an electrostatically operating application device 12 shown only schematically, which in the present exemplary embodiment is a high-rotation atomizer 14 with a rotating bell cup 16.
the application device 12 comprises a dispensing line 18, via which coating material can be dispensed onto an article.
the discharge line 18 leads to the bell cup 16 of the high-rotation atomizer 14.
the bell cup 16 and the discharge line 18 thus form a delivery device.
the application device 12 can optionally be supplied with material from two supply lines 20, the first supply line being denoted by 20.1 and the second supply line by 20.2 in the figures.
the second supply line 20.2 is only indicated and not shown in detail.
the first and the second supply line 20.1 and 20.2 are identical in the present embodiment.
the two supply lines 20 each extend between an input valve device 22 and an output valve device 24.
the input valve device 22 is in the present embodiment as per se known color changer 26 formed, which can be fed from ring lines 28 with different media.
the input valve device 22 is connected to a working line 30.
a working fluid such as compressed air or a detergent can be supplied.
the working line 30 can serve as a so-called dump to lead material out of the system.
the working line 30 is in turn connected in a manner known per se with a valve device not shown separately, which can connect the working line 30 with a compressed air source, a detergent source and an outlet. If subsequently other lines are referred to as working lines, they fulfill the same purpose and are connected to a corresponding valve device and material sources and an outlet.
each of the supply strands 20 may be connected to a separate input valve device 26.
Each supply line 20 comprises a storage container 32 in the form of a piston meter 34, from which the application device 12 can be fed via a supply line 36.
the piston dispenser 34 illustrates only one example of a reservoir 32 for coating material.
the discharge line 18 is connected to the output valve device 24, in which the respective supply line 36 of each supply line 20 opens.
the Output valve means 24 is also connected to a working line 38 for compressed air / detergent / dump.
the piston dispenser 34 includes a cylinder 40 in which a piston 42 can be moved by means of a piston drive not specifically shown.
the piston 42 defines with the cylinder 40 a working space 44, which is connected to the supply line 36 via a metering valve unit 46.
the working space 44 is connected to an inlet line 48 via the metering valve unit 46.
a working line 50 for compressed air / detergent / dump opens into the metering valve unit 46th
the inlet line 48 extends between the color changer 26 and the piston dispenser 34 and comprises as a piggable line section a pig pipe 52 which extends between a first pig station 54 and a second pig station 56.
the first pig station 54 will be referred to below as the start pig station and the second pig station 56 as the target pig station.
the start pig station 54 and the destination pig station 56 are connected in a manner known per se to a respective working line 54a or 56a for compressed air / rinsing agent / dump.
the inlet conduit 48 defines a connecting portion 58 which interconnects the target pig station 56 and the reservoir 32, in the present embodiment, its metering valve unit 4.
a mechanical isolation device 60 is provided, which in the present embodiment in the connecting portion 58 is integrated.
the isolation device 60 defines a portion of the inlet conduit 48, in the present embodiment, a portion of the connection portion 58, as an isolation channel 62 with an inner circumferential surface 62 a.
the isolation device 60 comprises a broaching body 64 which can be moved in the isolation channel 62 and is complementary to the internal cross section of the isolation channel 62.
the isolation channel 62 is connected via a first end region 66a to a line section 58a of the connection section 58, which leads to the destination pig station 56.
a parking space 68 for the Räum Eigen 64 which ends in an end wall 70.
a short line section 58b of the connecting portion 58 is radially from the isolation channel 62, which leads to the metering valve unit 46.
the conduit section 58 is a conduit section of the inlet conduit 48 which connects the isolation conduit 62 to the receiver vessel 32.
the broaching body 64 can be displaced in the isolation channel 62 between a parking position and an isolation position.
parking position to be detected is the clearing body 64 in the parking space 68, so that material can flow freely through from the connecting portion 58 therethrough.
the broaching body 64 is in the first end portion 66a and the isolation device 60 is in an isolation configuration.
the isolation device comprises 60 has a mechanical drive device 72.
This has as a drive element on a thrust element 74, which is arranged in the isolation channel 62 between the end wall 70 and the reaming body 64.
the thrust element 74 is connected on its side remote from the reaming body 64 with a thrust shaft 76, which is guided through a complementary passage opening 78 in the end wall 70 into a drive space 80 which is disposed adjacent to the parking space 68.
the thrust shaft 76 is coupled to a drive unit 82, which may be, for example, an electric motor or a pneumatic or hydraulic drive.
the drive unit 82 forms a winding device 84, by means of which the thrust shaft 76 can be unwound out of the drive space 80 into the isolation channel 62 and wound out of the isolation channel 62 into the drive space 80, for which purpose the thrust shaft 76 is suitably flexible.
the thrust shaft 76 in the axial direction, is so rigid that it can generate the required pressure on the broaching body 64.
the isolation channel 62 and the drive space 80 with the drive unit 82 are accommodated in an insulation housing 86.
the paint From the color changer 26, the paint first passes into the starting pig station 54, where a pig, not specifically shown, is introduced into the pig line 52 in front of the paint volume, which is then pushed by the paint to the destination pig station 56. The paint then flows through the connecting portion 58 and the metering valve unit 46 into the piston dispenser 34. In this case, the reaming body 64 of the isolation device 60 is in its parking position in the parking space 68. If the reaming body 64 is initially outside the parking space 68 in the isolation channel 62, it is pushed by the paint in its parking position.
the paint delivery from the color changer 26 is terminated.
the target pig station 56 and the metering valve unit 46 are switched to a configuration in which the working lines 50 and 56a are connected to the connecting portion 58, respectively.
the connecting portion 58 is purged by flushing detergent through the working line 50 of the metering valve unit 46 to the target pig station 56 and out of its working line 56a.
the broaching 64 is pushed from its parking position to its isolation position by the thrust shaft 76 is wound into the isolation channel 62 into it.
this isolation movement of the broaching body 64 frees the inner circumferential surface 62 a of the insulation channel 62 of still adhering material.
FIG. 2 shows the situation when the reamer 64 has reached its isolation position.
the thus de-materialized portion of the isolation channel 62 then forms an electrical isolation route 88 between the piston dispenser 34 and the target pig station 56.
the isolation route 88 is then formed between the receiver tank 32 and the input valve device 22.
a sufficient isolation distance usually has a minimum length of about 300 mm. It goes without saying that all the components involved must be made of electrically insulating material, for which in particular plastics come into question.
the broaching body 64 can be moved exactly and by a defined distance independently of the material in the isolation channel 62. Position sensors for the clearing body 64 may be present for monitoring the distance covered. In principle, however, its isolation movement can be tracked via the drive unit 82, since the movement path of the thrust shaft 76 can be monitored simply and in a manner known per se.
the actual distance traveled by the pig may deviate from the required path for the construction of the insulation section, since this is influenced by different viscosities with different materials in the pipeline and by dimensional tolerances.
Paint can now be pressed out of the piston dispenser 34 via the supply line 36 to the outlet valve device 24 and into the dispensing line 18, so that paint can be applied by the application device 12 to a non-specifically shown object. In the case of Hochrotationszerstäubers this is at high voltage potential. An electrical flashover to the electrically conductive materials in the first supply strand 20.1 is prevented by the insulation gap 88.
a color change is prepared in a manner known per se.
the existing in the second supply line piston feeder is filled and constructed a corresponding isolation distance in a corresponding manner.
FIGS. 3 and 4 show a coating system 10 with an isolation device 60, which has a modified drive unit 82.
a winding device 84 there is a cylinder device 90 is provided, in which the thrust element 74 is connected to a push rod 92 which carries a piston 94 at the other end, as it is known per se.
the piston 94 runs in the drive space 80, which forms the cylinder space here.
the thrust element 74 may also be defined only by the respective free end of the thrust shaft 76 or the push rod 92.
variations of the Räumköper 64 may also be immovably coupled to the thrust shaft 76 or the push rod 92 so that the reamer 64 follows the movements of the thrust shaft 76 or the push rod 92 in both directions.
the thrust shaft 76 or the push rod 92 forms the drive element.

Landscapes

Spray Control Apparatus (AREA)
Electrostatic Spraying Apparatus (AREA)

EP15003164.9A 2014-11-08 2015-11-04 Systeme de revetement d'objets Active EP3017873B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE102014016552.3A DE102014016552A1 (de)	2014-11-08	2014-11-08	Beschichtungssystem zum Beschichten von Gegenständen

Publications (2)

Publication Number	Publication Date
EP3017873A1 true EP3017873A1 (fr)	2016-05-11
EP3017873B1 EP3017873B1 (fr)	2021-04-07

Family

ID=54557198

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP15003164.9A Active EP3017873B1 (fr)	2014-11-08	2015-11-04	Systeme de revetement d'objets

Country Status (2)

Country	Link
EP (1)	EP3017873B1 (fr)
DE (1)	DE102014016552A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5096126A (en) *	1989-04-19	1992-03-17	Sames S. A.	Electrostatic spraying installation for spraying an electrically conductive liquid product and electrical insulation device for a distribution circuit for an electrically conductive liquid product
EP1134027A2 (fr) *	2000-03-15	2001-09-19	Nissan Motor Co., Ltd.	Appareil de revêtement
JP2004344788A (ja) *	2003-05-22	2004-12-09	Asahi Sunac Corp	塗装装置
WO2008141742A2 (fr) *	2007-05-23	2008-11-27	Dürr Systems GmbH	Garniture de tige de piston pour un cylindre d'isolation d'une installation d'enduction

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19961270A1 (de) *	1999-12-18	2001-07-05	Inlac Ind Lackieranlagen Gmbh	Lackieranlage
DE10157966A1 (de) *	2001-11-27	2003-06-05	Duerr Systems Gmbh	Verfahren und Versorgungssystem zur dosierten Materialversorgung einer Beschichtungsvorrichtung
US7549449B2 (en) *	2002-05-07	2009-06-23	Durr Systems, Inc.	Paint delivery and application system and method
DE102004056789A1 (de) *	2004-11-24	2006-06-01	Eisenmann Maschinenbau Gmbh & Co. Kg	Elektrische Trenneinheit für eine Fluid-Förderleitung

2014
- 2014-11-08 DE DE102014016552.3A patent/DE102014016552A1/de not_active Withdrawn
2015
- 2015-11-04 EP EP15003164.9A patent/EP3017873B1/fr active Active

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5096126A (en) *	1989-04-19	1992-03-17	Sames S. A.	Electrostatic spraying installation for spraying an electrically conductive liquid product and electrical insulation device for a distribution circuit for an electrically conductive liquid product
EP1134027A2 (fr) *	2000-03-15	2001-09-19	Nissan Motor Co., Ltd.	Appareil de revêtement
JP2004344788A (ja) *	2003-05-22	2004-12-09	Asahi Sunac Corp	塗装装置
WO2008141742A2 (fr) *	2007-05-23	2008-11-27	Dürr Systems GmbH	Garniture de tige de piston pour un cylindre d'isolation d'une installation d'enduction

Also Published As

Publication number	Publication date
EP3017873B1 (fr)	2021-04-07
DE102014016552A1 (de)	2016-05-12

Publication	Publication Date	Title
EP3523052B1 (fr)	2020-05-13	Dispositif de revêtement et méthode de revêtement correspondante
EP0292778B1 (fr)	1991-09-11	Procédé et installation de revêtement électrostatique avec un produit de revêtement conducteur
EP1108475B1 (fr)	2004-08-18	Installation de peinture
EP3171983B1 (fr)	2018-11-21	Système de revêtement servant au revêtement d'objets
DE3717929C2 (fr)	1992-04-16
EP1344572B1 (fr)	2007-03-28	Installation de peinture pour revêtir des objets par un revêtement liquide
EP1270083B1 (fr)	2005-12-28	Système et procédé pour alimenter un appareil de revêtement par des écouvillions
DE10064065B4 (de)	2006-07-27	Beschichtungssystem für die automatisierte Beschichtungstechnik
EP1369183B1 (fr)	2009-12-02	Méthode et système d'alimentation de peinture pour une installation de revêtement électrostatique
EP3414017B1 (fr)	2022-09-14	Dispositif d'isolation ainsi que système de revêtement le comprenant
EP3017873B1 (fr)	2021-04-07	Systeme de revetement d'objets
DE10120077B4 (de)	2006-07-27	Beschichtungssystem für die automatisierte Beschichtungstechnik
EP1772194A2 (fr)	2007-04-11	Dispositif d'alimentation pour un agent de revêtement et correspondant procédé de fonctionnement
EP3012028B1 (fr)	2017-04-12	Dispositif de dosage à piston pour milieux liquides pour l'enduction d'objets
EP3188844B1 (fr)	2018-10-24	Système de revêtement permettant de revêtir des objets
EP3015174A1 (fr)	2016-05-04	Systeme de revetement d'objets
EP3313584B1 (fr)	2019-09-25	Bloc changeur de poudre et système de distribution de poudre pourvu dudit bloc changeur de poudre
WO2012113514A1 (fr)	2012-08-30	Doseur à piston pour milieux fluides
WO2017108437A1 (fr)	2017-06-29	Dispositif de revêtement pour l'application électrostatique d'une matière de revêtement et procédé afférent
WO2017008977A1 (fr)	2017-01-19	Dispositif de changement et système de revêtement pour le revêtement d'objets
DE102015007158A1 (de)	2016-12-08	Beschichtungssystem zum Beschichten von Gegenständen

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