EP3171983A1 - Système de revêtement servant au revêtement d'objets - Google Patents

Système de revêtement servant au revêtement d'objets

Info

Publication number
EP3171983A1
EP3171983A1 EP15750241.0A EP15750241A EP3171983A1 EP 3171983 A1 EP3171983 A1 EP 3171983A1 EP 15750241 A EP15750241 A EP 15750241A EP 3171983 A1 EP3171983 A1 EP 3171983A1
Authority
EP
European Patent Office
Prior art keywords
line
cleaning
outlet
valve
supply line
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.)
Granted
Application number
EP15750241.0A
Other languages
German (de)
English (en)
Other versions
EP3171983B1 (fr
Inventor
Ralph Meier
Tobias MOZER
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.)
Filing date
Publication date
Application filed by Eisenmann SE filed Critical Eisenmann SE
Publication of EP3171983A1 publication Critical patent/EP3171983A1/fr
Application granted granted Critical
Publication of EP3171983B1 publication Critical patent/EP3171983B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B05B12/149—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 characterised by colour change manifolds or valves therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B05B15/557—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids the cleaning fluid being a mixture of gas and liquid
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/58—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter preventing deposits, drying-out or blockage by recirculating the fluid to be sprayed from upstream of the discharge opening back to the supplying means
    • 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
    • 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

Definitions

  • the invention relates to a coating system for coating objects, comprising a) an application device with a dispensing device by means of which a coating material can be dispensed; b) a supply system, comprising at least: ba) a first coating material supply container connected to the delivery device via a first supply line and a first material valve; bb) a second supply container for coating material, which is connected via a second supply line and a second material valve to the delivery device; c) a cleaning system with at least one first cleaning line, which can be supplied with rinsing agent via a first rinsing agent supply line, and a second cleaning line, which can be supplied with rinsing agent via a second rinsing agent supply line; wherein d) the first cleaning line is connected via a first cleaning valve to the first supply line and the second cleaning line via a second cleaning valve to the second supply line.
  • Under lines are present all flow paths for fluid
  • CONFIRMATION COPY to understand the media.
  • this also includes channels incorporated in the body, flow chambers or even through-openings.
  • their axial extent thus predetermines the length of the line formed thereby.
  • the length of a line in compact systems can be very small and, for example, only 1 mm in the case of through-openings, depending on the material thickness of the element having the passage opening.
  • Such coating systems for example, in the automotive industry, articles such as vehicle bodies or body parts are coated with the aid of electrostatically operating application devices.
  • 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.
  • a color change ⁇ When an object with a different color is to be painted as the previously coated article, a color change ⁇ must be performed.
  • a coating system of the type mentioned in the introduction comprises at least two feed containers, so that alternating operation can take place. In practice this means that the application device is fed from the one storage container with a first coating material while the other supply container is charged with another coating material so that the system is prepared for a color change.
  • the lines in the direction away from the application device during the coating process must build up an insulation gap and be clean and dry for this purpose.
  • the lines are made accordingly from an electrically insulating material. Basically, it is important in coating systems that no air gets into the coating materials, because then it can happen that the funded material volumes no longer match the volumes required for a coating process.
  • connection points based on the direction of flow 5 to the dispensing device, are each arranged in front of one of the cleaning valves.
  • the connecting line provides a bypass line to the valves over. It is advantageous if the first cleaning line is connected via a first outlet valve to an outlet line and the second cleaning line via a second outlet valve to an outlet line. The respective outlet valve can then be opened for the purpose of venting for the respective not charged with detergent cleaning line.
  • the first outlet valve in a first outlet line and the second exhaust valve is disposed in a second exhaust passage; b) the first outlet line is connected to the first cleaning line and the second outlet line is connected to the second cleaning line; the first and the second outlet line open into an outgoing manifold.
  • a single shared outlet manifold can be used for ide cleaning lines. is favorable in terms of flow when the first cleaning line, the first flushing agent supply line and the first outlet line open at a first line intersection; the second cleaning line, the second flushing agent supply line and the second outlet line open at a second line crossing each other.
  • the supply of detergent it is effective if the first detergent supply line and the second detergent supply line are connected via a respective flushing valve with a common detergent source.
  • the cleaning system comprises at least one compressed air source and the Ers ⁇ th cleaning line and the second cleaning line compressed air can be fed.
  • a separate feeder is favorable by the Cleaning system of the first cleaning line via a first compressed air supply line Compressed air can be supplied to the second cleaning line via a second compressed air supply line
  • Compressed air can be supplied.
  • the first storage container and / or the second storage container is a piston dispenser.
  • the coating system is particularly effective when the application device is electrostatic and in particular is an electrostatically operating high rotation atomizer.
  • FIG. 1 shows schematically a coating system with an application device, a supply device and a flushing device
  • FIGS. 2 to 8 show the coating system of FIG. 1 in different phases of a cleaning process.
  • the figures schematically show a coating system 10 for coating objects, for example vehicle bodies or their attachments.
  • the coating system 10 comprises an application device 12, which is shown only schematically in the present embodiment.
  • the application device 12 is an electrostatically operating high-speed rotary 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 a non-specifically shown item.
  • 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 consist of a first feed container 20.1 in the form of a first piston dispenser 22.1 via a first supply line 24.1 of a supply system 26 or from a second feed container 20.2 in the form of a piston dispenser 22.2 via a second
  • the first piston dispenser 22.1 and the second piston dispenser 22.2 respectively illustrate only one example of a first storage container 20.1 and a second storage container 20.2 for coating material.
  • the dispensing line 18 forks at an input end 28 into a first input arm 30.1 and a second input arm 30.2.
  • the first input arm 30.1 is.
  • Via a material valve 32.1 with the first supply line 24.1 and the second input arm 30.2 is connected via a fluid valve 32.2 with the second supply line 24.2 of the supply system 26.
  • the input arms 30.1 and 30.2 can also be opened by passage openings. be formed in the discharge line 18, as it was initially addressed.
  • the piston dispenser 22. 1 comprises a cylinder 34. 1 in which a piston 36. 1 can be moved by means of a piston drive not specifically shown.
  • the piston 36.1 defines with the cylinder 34.1 a working space 38.1, which is connected to the first supply line 24.1.
  • the working space 38.1 is connected to an inlet line 40.1 and an outlet line 42.1.
  • the inlet line 40.1 is connected in a manner known per se to a color changing device 44.1, so that the piston dispenser 22.1 can be filled with different materials.
  • a cylinder 34.2, a piston 36.2, a working space 38.2, an inlet line 40.2, an outlet line 42.2 and a color changing device 44.2 are present in connection with the second piston dispenser 22.2.
  • the lines 40.1, 40.2, 42.1 and 42.2 can be closed or released by valves on the respective piston dispenser 22.1 or 22.2, which are not specifically shown for clarity.
  • the supply line 24.1 is connected at a discharge point 46.1 via a cleaning valve 48.1 to a cleaning line 50.1 of a cleaning system 52.
  • the cleaning line 50.1 leads from the cleaning valve 48.1 to a line crossing 54.1, at which the cleaning line 50.1, a detergent supply line 56.1, a compressed air supply line 58.1 and an outlet line 60.1 open into one another.
  • the cleaning lines 50.1, 50.2 detergent can be supplied.
  • the detergent supply lines 56.1, 56.2 are connected via a respective flushing agent valve 62.1 or 62.2 and a Y-line 64 to a flushing agent source 66.
  • the compressed air supply lines 58.1 and 58.2 are each connected via a compressed air valve 68.1 or 68.2 and a Y-line 70 to a compressed air source 72.
  • the outlet lines 60.1, 60.2 are connected via a respective outlet valve 74.1 or 74.2 to an outlet manifold 76.
  • All valves 32.1, 32.2, 48.1, 48.2, 62.1, 62.2, 68.1, 68.2 and 74.1, 74.2 are check valves which can optionally close or release the respective line passage.
  • connection points 80.1 and 80.2 are arranged for the connection line 78 in each case before one of the cleaning valves 48.1 and 48.2, respectively with respect to the flow direction to the dispenser 16, 18 with the discharge line 18 and the bell cup 16. Consequently, each cleaning line forks 50.1, 50.2 at a connection point 80.1, 80.2 into the connection line 78 and into a respective end section of the cleaning line 50.1, 50.2 which leads to the respective cleaning valve 48.1 or 48.2.
  • coating material remains in the supply lines 24.1 or 24.2, if an application onsvorgang with a coating material is completed.
  • the starting point is the application configuration according to FIG. 2, in which a coating material 82 from the first piston dispenser 22. 1 is applied.
  • the piston dispenser 22.1 was previously filled with the coating material 82 from the associated color changer 44.1.
  • the coating material 82 is shown simply hatched in the figures obliquely.
  • the access to the first supply line 24.1 is open at the first piston dispenser 22.1 and the accesses to the inlet line 40.1 and to the outlet line 42.1 are closed.
  • the first material valve 32.1 to the discharge line 18 is opened, the second material valve 32.2 and the first and second cleaning valve 48.1, 48.2 are closed.
  • the piston 36.1 presses the coating material 82 in the direction of the application device 12, from which it is applied to an object.
  • the compressed air valves 68.1, 68.2 are opened.
  • the flushing valves 62.1, 62.2 and the outlet valves 74.1, 74.2 are closed.
  • the Y-line 64 is up to the closed dishwashing valves 62.1, 62.2 filled with detergent 84 from the detergent source 66.
  • the rinsing agent 84 is shown simply hatched in the figures.
  • the lines 70, 58.1, 58.2, 56.1, 56.2, 50.1, 50.2, 60.1, 60.2 and 78 are acted upon by compressed air 86 from the compressed air source 72.
  • the compressed air 86 is illustrated hatched diagonally in the figures.
  • FIG. 3 shows a configuration after completion of the coating process with the coating material 82.
  • the material valve 32.1 is closed and coating material 82 is still present in the first supply line 24.1.
  • the compressed air valves 68.1 and 68.2 are closed, whereas the first flushing valve 62.1 and the second outlet valve 74.2 are opened.
  • flushing agent 84 flows into the line system and via the cleaning line 50.1 in Rich ⁇ tion to the first cleaning valve 48.1.
  • the flushing means 84 pushes the compressed air 86 out of the first cleaning line 50.1 via the connecting line 78 into the second cleaning line 50.2 and from there via the now accessible outgoing collecting line 76 from the line system.
  • connection line 78 Due to the connection line 78, it is possible to guide the flushing means 84 to the application device 12 and to the supply line 24.1 without air getting there. Air, or as initially mentioned generally a gas, in or before the rinsing agent 84, which or which would otherwise interfere with the process ⁇ sen otherwise, can be channeled out of the system in this way.
  • the rinsing agent 84 now pushes the coating material 82 out of the first supply line 24.1 back into the first piston dosing device 22.1, wherein the phase boundary between the rinsing agent 84 and the coating material 82 is designated by 88.
  • FIG. 5 shows that the coating material 82 from the first supply line 24.1 has now largely been pushed back into the first piston dispenser 22.1 in the further course. Since a mixing volume of rinsing agent 84 and coating material 82 is formed at the phase boundary 88 between the rinsing agent 84 and the coating material 82, the process is stopped while maintaining a buffer volume 90 in front of the piston dispenser 22.1, so that no part of this mixing volume is introduced into the piston dispenser 22.1 can get. For example, only 70% of the known volume of the first supply line 24.1 are fed back into the piston dispenser 22.1.
  • the access to the supply line 24.1 is closed and the access to the outlet line 42.1 remains closed, whereas the access to the inlet line 40.1, which leads to the color changer 44.1, is opened.
  • the coating material 82 is now pressed by the piston 36.1 via the inlet line 40.1 back to the color changer 44.1 and there into the associated material source.
  • the flushing valve 62.1 is closed and opened both compressed air valves 68.1, 68.2, whereby compressed air 86 is pressed into the piping system.
  • the compressed air 86 first presses all the media in the lines on the way via the supply lines 24.1 and the piston dispenser 22.1 out of the line system and blows them dry.
  • the cleaning valve 48.1 is closed, the outlet valve 74.2 is opened and the compressed-air valve 68.2 is closed, so that compressed air 86 via the compressed-air valve 68.1 through the cleaning line 50.1, the connecting line 78 and the cleaning line 50.2 to the outlet valve 74.2 and from there through the outlet manifold 76 flows until all lines are blown dry and can be used for the next application process; this last cleaning configuration is illustrated in FIG.
  • the discharge line 18 is cleaned by flushing means 84 is passed through the material valve 32.1 in the discharge line 18. This is also dry-blown by means of compressed air 86 when the material valve 32.1 is open.
  • the application and the cleaning process has been explained only with reference to the first piston meter 22.1.
  • the second piston dispenser 22.1 has already been filled with a coating material which is to be applied to an article after the coating material 82 in terms of time.
  • the coating system 10 is now brought into a configuration which corresponds to that according to FIG. 2, in contrast to which the first material valve 32.1 is closed, but the second material valve 32.2 is opened. The cleaning process after completion of the coating process is then carried out accordingly.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Spray Control Apparatus (AREA)
  • Cleaning In General (AREA)

Abstract

L'invention concerne un système de revêtement servant au revêtement d'objets, lequel présente un dispositif d'application (12) muni d'un dispositif de distribution (16, 18) et servant à distribuer un matériau de revêtement (82). Un système d'alimentation (26) comprend au moins un premier réservoir de stockage (20.1) du matériau de revêtement qui est raccordé au dispositif de distribution (16, 18) par une première conduite d'alimentation (24.1) et une première soupape à matériau (32.1), et un deuxième réservoir de stockage (20.2) du matériau de revêtement qui est raccordé au dispositif de distribution (16, 18) par une deuxième conduite d'alimentation (24.2) et une deuxième soupape à matériau (32.2). Un système de nettoyage (52) est muni d'au moins une première conduite de nettoyage (50.1) à laquelle un agent de rinçage (84) peut être amené par une première conduite d'agent de rinçage (56.1), et d'une deuxième conduite de nettoyage (50.2) à laquelle l'agent de rinçage (84) peut être amené par une deuxième conduite d'amenée d'agent de rinçage (56.2). La première conduite de nettoyage (50.1) est raccordée à la première conduite d'alimentation (24.1) par une première soupape de nettoyage (48.1), et la deuxième conduite de nettoyage (50.2) est raccordée à la deuxième conduite d'alimentation (24.2) par une deuxième soupape de nettoyage (48.2). La première conduite de nettoyage (50.1) et la deuxième conduite de nettoyage (50.2) sont raccordées l'une à l'autre par une conduite de raccordement (78), et les points de raccordement (80.1, 80.2) sont agencés respectivement en amont d'une des soupapes de nettoyage (48.1, 48.2) par rapport à la direction d'écoulement sur le dispositif de distribution (16, 18).
EP15750241.0A 2014-07-24 2015-07-24 Système de revêtement servant au revêtement d'objets Not-in-force EP3171983B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014010864.3A DE102014010864A1 (de) 2014-07-24 2014-07-24 Beschichtungssystem zum Beschichten von Gegenständen
PCT/EP2015/001530 WO2016012100A1 (fr) 2014-07-24 2015-07-24 Système de revêtement servant au revêtement d'objets

Publications (2)

Publication Number Publication Date
EP3171983A1 true EP3171983A1 (fr) 2017-05-31
EP3171983B1 EP3171983B1 (fr) 2018-11-21

Family

ID=53836528

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15750241.0A Not-in-force EP3171983B1 (fr) 2014-07-24 2015-07-24 Système de revêtement servant au revêtement d'objets

Country Status (5)

Country Link
US (1) US10625291B2 (fr)
EP (1) EP3171983B1 (fr)
CN (1) CN106573266B (fr)
DE (1) DE102014010864A1 (fr)
WO (1) WO2016012100A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN108838003A (zh) * 2018-06-30 2018-11-20 禹州市新光铸造有限公司 一种便于清洗的铸管内壁喷涂装置
CN110876992A (zh) * 2018-08-31 2020-03-13 长鑫存储技术有限公司 材料供应装置、材料供应系统及材料供应方法
CN112007826A (zh) * 2019-05-29 2020-12-01 夏普株式会社 涂布装置
CN112789118B (zh) * 2019-07-23 2022-05-13 Abb瑞士股份有限公司 静电涂装装置

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JP2830683B2 (ja) * 1992-09-11 1998-12-02 トヨタ自動車株式会社 回転霧化静電塗装装置
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SE508510C2 (sv) * 1997-02-24 1998-10-12 Abb Flexible Automation As Anläggning och förfarande för automatisk sprutlackering
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EP2268415B1 (fr) 2008-03-20 2015-05-06 Dürr Systems GmbH Robot de peinture et procédé d'utilisation correspondant
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CN203540814U (zh) 2013-10-24 2014-04-16 重庆特铺路面工程技术有限公司 双组份喷涂系统

Also Published As

Publication number Publication date
US10625291B2 (en) 2020-04-21
CN106573266B (zh) 2019-08-16
DE102014010864A1 (de) 2016-01-28
WO2016012100A1 (fr) 2016-01-28
EP3171983B1 (fr) 2018-11-21
US20170216870A1 (en) 2017-08-03
CN106573266A (zh) 2017-04-19

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