EP2991772A1 - Wechseleinrichtung für beschichtungsmedien und beschichtungssystem zum beschichten von gegenstände - Google Patents
Wechseleinrichtung für beschichtungsmedien und beschichtungssystem zum beschichten von gegenständeInfo
- Publication number
- EP2991772A1 EP2991772A1 EP14722103.0A EP14722103A EP2991772A1 EP 2991772 A1 EP2991772 A1 EP 2991772A1 EP 14722103 A EP14722103 A EP 14722103A EP 2991772 A1 EP2991772 A1 EP 2991772A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pig
- changing device
- coupling unit
- coating
- chamber
- 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- Withdrawn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
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
- B05B12/1481—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
- 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
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
Definitions
- the invention relates to a change device for coating media, in particular for paints, with a) a plurality of supply units, each of which has at least one inlet, which can be connected to a reservoir, and an outlet, between which a flow channel extends; b) at least one coupling unit which can be moved relative to the supply units and which has an input and an output which can be connected to an application device, between which a passageway extends; wherein c) the input of the coupling unit is so complementary to the outlets of the supply units, that the input of the coupling unit with the outlet of one of the supply units can be coupled and disconnected again therefrom.
- the invention relates to a coating system for coating objects with a) an application device; b) a plurality of reservoirs for each one coating medium; c) which connectedness at least one changing device having a plurality of inlets, each of which is connected to a separate reservoir for Be ⁇ coating medium, and at least one output connected to the application device which is, and through which optionally a coating medium from a reservoir to the application device can be conducted.
- Such a change device and such a coating system are known, for example, from DE 201 22 759 U1.
- a changer for coating media i. So then a color changing device, used when it occurs more frequently in normal operation, that for the coating of an object, a different paint is to be used as the paint with which a previous object was painted.
- the media-carrying channels and lines must be cleaned of the previously used lacquer, for which purpose a flushing agent is conveyed through the corresponding channels and lines.
- a flushing agent is conveyed through the corresponding channels and lines.
- the so-called pigging technique is frequently used, in which the coating media or the flushing agent are pushed by means of pigs through the channels and lines.
- the pig is reciprocated between two pig stations, one of which is located close to the application device and the other close to the changing device.
- the invention is based on the recognition that the coupling unit of the changing device can be designed as a pig station. In this way, there is no dead volume between the changing device and the associated pig station, from which no paint can be recovered, and the recoverable paint volume increases accordingly.
- Molchraum located pig over and thereby at least be ⁇ rich way to flow along this.
- a more complex construction in the mediumlimitinggeScience.t with the help of valves on the pig, can then be omitted.
- a cleaning of the pig which must necessarily be made before a color change, in a simple manner, since the pig in the pig chamber and can be flown over and rinse.
- the passageway in the portion defining the pig compartment is widened symmetrically.
- a largely uniform flow around the pig can be realized.
- blocking means are present in the coupling unit, which movement of a pig out of the pig chamber in the direction of the input of the coupling unit. prevent it.
- the pig in a color change and the associated operations can be kept in a parked position when media are discharged in the direction of the respective connected supply unit.
- the locking means are formed by at least one contact element, which is arranged in the passage and against which a pig can rest on an end face.
- the abutment element comprises at least one attachment lance with a tip, which is arranged such that a pig can rest against the tip of the attachment lance on its end face.
- the contact area between pig and contact element can be kept small, which in turn facilitates the pig cleaning.
- the holding means are formed by at least one guide rib extending on the inner wall of the pig cavity.
- the initial drive device can exert a fluidic force, for example by compressed air, or a mechanical force, for example by a piston element, on the pig.
- the above-mentioned object is achieved in that d) the changing device is a changing device with some or all of the above-mentioned features.
- FIG. 1 is a perspective view of a Be Mrsungssys- system with a first embodiment of a changing device with multiple supply units and a coupling unit with a fluidic initial drive means which is connected via a piggable line with an application device and designed as a pig station with a pig chamber;
- Figure 2 is a section of the changing device of Figure 1 in a change of the coupling unit from one supply unit to the next, wherein a pig is in the pig chamber of the coupling unit;
- Figures 3 and 4 a section of the changing device at two times a Andschreibphase, pressed in the paint from a reservoir to the application device becomes;
- Figure 5 shows a section of the changing device in an appli cation phase
- Figures 6 and 7 a section of the changing device at two times a rinsing phase in which a Lackan part is removed via a flushing channel;
- Figure 8 is a section of a second embodiment de
- Figure 9 is a perspective view of a modified Be coating system with a thirdheldsbei game a changing device.
- FIG. 1 a coating system for appli cation coating media is designated in FIG. 1, which comprises an application device 4.
- the application device can be, for example, a spray gun or a high-rotation atomizer, as it is known per se.
- the application device 4 is fed via a line 6.
- the coating system 2 is operated in a manner known per se using the pigging technology, which is why a pig station 8 is arranged in the vicinity of the application device 4 in the line 6.
- the line 6 is connected to a change device 10 for coating media, which is thus a color change device when coated with paint.
- the changing device 10 comprises a plurality of supply units 12, wherein five supply units 12.1, 12.2, 12.3, 12.4 and 12.5 are shown in FIG.
- the changing device 10 comprises at least two and may also comprise more than five such supply units 12, the latter being illustrated in FIG. 1 by a supply unit shown in dashed lines and identified by 12.
- the supply units 12 are identical; in Figure 1, only the supply units 12.1 and 12.2 are provided with further reference numerals.
- a supply unit 12 comprises a housing 14, which may be formed, for example, as a housing block.
- the housing 14 has a coating medium inlet 16, hereinafter referred to as the paint inlet 16.
- the housing 14 has a flushing channel 18 and an outlet 20.
- the color inlet 16 and the flushing channel 18 open via a jewei ⁇ term valve seat 16a and 18a in a flow channel 22 which leads to the outlet 20, as can be seen in Figure 2 in which only the two supply units 12.1 and 12.2 of the changing device 10 are shown.
- Figure 1 for better illustration further spaced apart and arranged rotated by 90 ° with respect to its longitudinal axis, so that the respective inlets 16 and channels 18 are in the plane of the paper.
- the ink inlet 16 and the flushing channel 18 of a supply unit 12 can each be closed or opened separately by a corresponding color valve 24 or flushing valve 26.
- the valves 24, 26 can be seen in FIGS. 2 to 8 and are illustrated there as needle valves known per se, which in each case cooperate with the valve seat 16a, 18a of the ink inlet 16 and the flushing channel 18, respectively.
- the ink inlets 16 of the individual supply units 12 are each connected to a separate ink reservoir 28, which is illustrated only in Figure 1, where there for the sake of clarity, only two such color reserves 28.1 and 28.2 are shown.
- ink reservoirs 28 associated with a particular supply unit 12 different lacquers, generally different coating materials, are kept in stock.
- the flushing channels 18 of the individual supply units 12 are each connected to a collecting container 30. In this case, several supply units 12 may be connected to one and the same collecting container 30.
- a detergent reservoir 32 is connected to the pig station 8 at the application device 4.
- the individual supply units 12 are in a linear Assembled arrangement to a supply module 34 and secured together, via which the application device 4 can be supplied with a corresponding number of different colors.
- the changing device 10 comprises a coupling unit 36, by means of which the supply units 12 can be coupled to the application device 4.
- the coupling unit 36 in turn comprises a housing 38, which may also be formed as a housing block by way of example. As can be seen from Figure 2, the housing 38 has an input 40 and an output 42, between which a passage 44 extends. The output 42 is connected to the line 6, which leads to the application device 4 and to the pig station 8. The output 42 of the coupling device 36 thus also constitutes the output of Wech ⁇ sel stressed 10th
- the input 40 of the coupling unit 36 is so complementary to the outlets 20 of the supply units 12, that the input 40 of the coupling unit 36 with the outlet 20 of one of the supply units 12 can be coupled and disconnected again from this.
- Corresponding connection flanges and sockets or coupling systems which permit such a repeatable, sealed and detachable connection of media-carrying lines are known per se and are not specifically shown here.
- the supply units 12 and the coupling unit 36 can be moved relative to each other.
- the exchange unit 10 comprises a drive device 46 shown in Figure 1, with the aid of which in the present embodiment the coupling unit 36 are moved along the supply module 34 and can be coupled to or disconnected from a predetermined supply unit 12. This is indicated in FIG. 1 by a double cross-arrow.
- the supply units 12 may also be moved relative to the stationary coupling unit 36 in a modification. This is illustrated by a dashed connection of the drive device 46 with the supply module 34 and a, also dashed, cross-double arrow.
- the coupling unit 36 is designed as a pig station 48, in which a pig 50 can be parked, as shown in FIG.
- the through channel 44 of the coupling unit extends in a From ⁇ section 52 symmetrically with respect to a pig chamber 54, so that the media in a pig 50 located in the pig chamber 54, past and thereby can flow therealong.
- blocking means 56 are present, which prevent such movement of the pig 50.
- these locking means 56 are formed as a contact element 58 which is arranged in the passage 44 and against which the pig 50 may rest against an end face 60.
- the abutment member 58 includes a support pedestal 62, by the coaxial an installation lance 64 having a free tip 66 protrudes from ⁇ .
- the contact element 58 is thus anchored with its support base 62 in the passage 44 between the input 40 and the pig chamber 54, that the plant lance 64 in the
- the support base 62 has several Through channels 68 in the axial direction, which are arranged radially adjacent to the plant lance 64, so that medium can flow through the contact element 58.
- Another, central channel 70 extends coaxially through the support base 62 and the gangue.64 through and ends in the top 66th
- holding means 72 are formed, which hold the pig in an axis parallel to the passage 44 or coaxial position.
- a plurality of guide ribs 74 are provided for this, which run on the inner wall of the pig chamber 54.
- the coupling unit 36 also still has ⁇ an access 76 54 Mün ⁇ det and can be closed by a check valve 78 or released via a valve seat 76a in the pig chamber.
- the check valve 78 is again designed as a needle valve and works with the valve seat 76 a on
- Figure 2 shows an initial situation in which the paint valves 24 and flush valves 26 of the supply units 12.1, 12.2 and the check valve 78 of the coupling unit 36th the respective Close flow paths and there is only air in all channels.
- the pig 50 is located in the pig chamber 54 of the coupling unit 36 and is located at its the input 40 of the coupling unit 36 facing end face 60 against the top 66 of the attachment lance 64 at.
- the coupling unit 36 is moved to the supply unit 12.2 and coupled thereto. Then, as shown in Fig. 3, the color valve thereof. 24 opened and a first paint 80 having a first color, which is illustrated by small circles, flows from the associated paint reservoir 28.2 in the flow channel 22 of the supply unit 12.2 a.
- media pressure of paint, detergent, air, C0 2 , nitrogen and the like can be used, which are provided in a manner known per se.
- media pressure of paint, detergent, air, C0 2 , nitrogen and the like can be used, which are provided in a manner known per se.
- media sources, lines, valves and connections are not specifically shown in the figures for clarity.
- the paint 80 passes through the contact element 58 into the pig chamber 54 and to the pig 50.
- the pig 50 moves through impinging paint 80 to the outlet 42 of the coupling unit 36 and there into the conduit 6 into it, as shown in Figure 4.
- an air cushion 82 formed between the paint 80 and the pig 50, an air cushion 82, which does not bother.
- the access 76 of the coupling unit 36 can be briefly released by the check valve 78 upon penetration of the paint 80 into the pig chamber 54, so that initially air can flow outward until the paint 80 touches the pig 50 .
- the central channel 70 can be acted upon by compressed air from compressed air source 84 indicated only by dashed lines in FIG. 3, which then comes from the tip 66 of the attachment lance 64 flows onto the pig 50 and this pushes away from the contact element 58.
- the channel 70 in the contact element thus forms together with the compressed air source 84 an initial drive means by which a pig 50, which is located in the pig chamber 54, can be pushed in the direction of the output 42 of the coupling unit 36 by a fluidic force is exerted on him.
- a color change to a second lacquer 86 with a different color than the first lacquer 80 is then to take place, which is provided here by way of example in the reservoir 28.1 of the supply unit 12.1.
- the first paint 80 which is in the line 6, the passage 44 of the coupling unit 36 and the. Strö ⁇ ment channel 22 of the supply unit 12.2 is, in the color reservoir 28.2 of the supply unit 12.2technischge ⁇ suppressed.
- the pig 50 from the pig station 8 by rinsing agent 88 from the detergent reservoir 32 to the application device 4 by means of a pressure medium such as compressed air, which acts on the rinse, over the line 6 is pressed into the pig chamber 54, wherein the pig 50, the paint 80 before her.schiebt.
- the rinse 88 is illustrated by small waves.
- the paint valve 24 of the supply unit 12.-2 is open, whereby the paint 80 is pushed back into the ink reservoir 28.2. This is not shown in the figures.
- the pig 50 can be dispensed with detergent.
- the pig 50 is immediately pressurized with compressed air and so passed through the conduit 6.
- the pig 50 is pushed in the pig chamber 54 to the contact element 58.
- the paint valve 24 of the supply unit 12.2 is closed and the purge valve 26 is opened. This configuration is shown in FIG. 6.
- the presence or absence of the pig 50 in the pig chamber 54 or in the pig station 8 can be determined by means of established detection methods. For this purpose, for example, in a known manner initiators, magnetic vortex sensors, light barriers and light guiding and ultrasonic techniques or a determination of the pig positions by pressure or volume measurements based on the funded coating medium suitable.
- the purge valve 26 is closed and the coupling unit 36 separated by means of the drive means 46 of the supply unit 12.2, which again corresponds to the configuration shown in Figure 2.
- the coupling unit 35 is moved to the supply unit 12.1 and coupled with this and the above-described operations are performed on the supply unit 12.1, via which the paint 86 from the reservoir 24.1. can be applied.
- FIG. 8 shows, as a second exemplary embodiment, an exchange unit 10 with a modified coupling unit 36.
- the abutment member 58 is formed as a piston member 90 which is slidably held in a connected to the pig chamber 54 piston chamber 92 and by a spring 94 in a retracted with respect to the pig chamber 54 position. In this position, the pig 50 can bear with its end face 60 against the piston member 90, as shown in Figure 8.
- the passage 44 of the coupling unit 36 extends in the manner at a right angle that the input 40 is arranged laterally adjacent to the pig chamber 54.
- FIG. 9 shows a modified coating system 2 with a third exemplary embodiment of the changing device 10.
- the supply units 12 are arranged in a circle in the supply module 34, so that a type of revolving drum is formed.
- the relative movement between the supply units 12 and the coupling unit 36 thus follows a circular path, apart from the coupling or separating movement of the participating units 12 and 36. This is again illustrated by corresponding double cross arrows.
- the loss of paint can be kept very low in a color change altogether and limited to the one on the paint, which is located between the pig station 8 and the application device 4 and is blown through the application device 4, and on the other to the volume between the pig 50 in the pig chamber 54 and the flushing channel 18 of the respective supply unit 12.
- This amount of paint can be the smaller, the shorter the path between the application device 4 and the pig station 8 or the pig 50 and the flushing channel 18th is.
- the pig 50 in the pig room ⁇ 54 can also be cleaned separately by flushing agent is pressed into the Olchraum 54 through the access 76, which then by the connected supply unit 12th can be discharged into the sump 30. In this case, as mentioned above, can be dispensed with a supply of detergent through the pig station 8 in the line 6.
- Two changing devices 10 can also be operated in parallel in a coating system. In comparison with a coating system 2 with only one changing device 10 then a color change can be done faster. While lacquer 80 from the reservoir 28.2 is applied, for example, via a first changing device 10, a second changing device 10 and its line 6 can already be rinsed up to the pig station 8. After this flushing process, the next lacquer, lacquer 86 can be submitted from the reservoir 28.1 to the pig station 8 already. The section of the line 6 between the pig station 8 and the application device 4 can be rinsed via the pig station 8 in a color change with detergent from the detergent reservoir 32.
- the scraper station 8 on the application device 4 can be constructed on the one hand in the usual manner and known from the prior art.
- the scraper station 8 may be formed in a similar manner as the Kop ⁇ pelaji 36 and include a corresponding pig chamber in the medium can flow past the pig 50.
- Corresponding locking means 56 prevent in this case, a BEWE ⁇ supply of the scraper 50 in the direction of the Ap ratesseinrich ⁇ tung 4 when it is in the pig chamber.
Landscapes
- Spray Control Apparatus (AREA)
- Coating Apparatus (AREA)
- Cleaning In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013007694.3A DE102013007694A1 (de) | 2013-05-03 | 2013-05-03 | Wechseleinrichtung für Beschichtungsmedien und Beschichtungssystem zum Beschichten von Gegenständen |
PCT/EP2014/001115 WO2014177261A1 (de) | 2013-05-03 | 2014-04-25 | Wechseleinrichtung für beschichtungsmedien und beschichtungssystem zum beschichten von gegenstände |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2991772A1 true EP2991772A1 (de) | 2016-03-09 |
Family
ID=50679993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14722103.0A Withdrawn EP2991772A1 (de) | 2013-05-03 | 2014-04-25 | Wechseleinrichtung für beschichtungsmedien und beschichtungssystem zum beschichten von gegenstände |
Country Status (5)
Country | Link |
---|---|
US (1) | US9993834B2 (de) |
EP (1) | EP2991772A1 (de) |
CN (1) | CN105188955B (de) |
DE (1) | DE102013007694A1 (de) |
WO (1) | WO2014177261A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013013549A1 (de) * | 2013-08-13 | 2015-02-19 | Eisenmann Ag | Wechseleinrichtung für Beschichtungsmedien und Beschichtungssystem zum Beschichten von Gegenständen |
WO2016063099A1 (en) * | 2014-10-22 | 2016-04-28 | Umm Al-Qura University | Liquid dispensing apparatus |
DE102017120213A1 (de) * | 2017-09-01 | 2019-03-07 | Eisenmann Lactec Gmbh | Verfahren zum Fördern eines Arbeitsmediums |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19742588B4 (de) * | 1997-09-26 | 2009-02-19 | Dürr Systems GmbH | Verfahren zum serienweisen Beschichten von Werkstücken |
DE19805938A1 (de) * | 1998-02-13 | 1999-08-19 | Lactec Gmbh | Verfahren und Vorrichtung zum Beschichten von Teilen |
DE19830029A1 (de) * | 1998-07-04 | 2000-01-05 | Audi Ag | Anlage zum Beschichten von Gegenständen, insbesondere von Fahrzeug-Karosserien |
DE19962220C2 (de) * | 1999-12-22 | 2002-01-24 | Fraunhofer Ges Forschung | Beschichtungsstoff-Wechselsystem und Beschichtungssystem für die automatisierte Beschichtungstechnik sowie Verfahren zum automatisierten Beschichten |
WO2001050228A2 (en) * | 2000-01-06 | 2001-07-12 | Rambus Inc. | Low latency multi-level communication interface |
FR2803776B1 (fr) * | 2000-01-14 | 2002-06-07 | Sames Sa | Installation de projection de produit de revetement |
DE20122759U1 (de) | 2001-03-29 | 2007-07-19 | Dürr Systems GmbH | Farbwechselsystem für eine Beschichtungsanlage |
FR2867702A1 (fr) | 2004-03-19 | 2005-09-23 | Haden Drysys Sa | Dispositif de recuperation d'un produit de revetement contenu dans une canalisation |
WO2010075322A1 (en) * | 2008-12-23 | 2010-07-01 | Abb Inc. | Paint shuttle system |
-
2013
- 2013-05-03 DE DE102013007694.3A patent/DE102013007694A1/de not_active Ceased
-
2014
- 2014-04-25 EP EP14722103.0A patent/EP2991772A1/de not_active Withdrawn
- 2014-04-25 US US14/888,799 patent/US9993834B2/en not_active Expired - Fee Related
- 2014-04-25 WO PCT/EP2014/001115 patent/WO2014177261A1/de active Application Filing
- 2014-04-25 CN CN201480015598.XA patent/CN105188955B/zh not_active Expired - Fee Related
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2014177261A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102013007694A1 (de) | 2014-11-06 |
WO2014177261A1 (de) | 2014-11-06 |
CN105188955B (zh) | 2018-11-20 |
US9993834B2 (en) | 2018-06-12 |
US20160082459A1 (en) | 2016-03-24 |
CN105188955A (zh) | 2015-12-23 |
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