EP3610955A1 - Système de changement de couleur - Google Patents

Système de changement de couleur Download PDF

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Publication number
EP3610955A1
EP3610955A1 EP19197160.5A EP19197160A EP3610955A1 EP 3610955 A1 EP3610955 A1 EP 3610955A1 EP 19197160 A EP19197160 A EP 19197160A EP 3610955 A1 EP3610955 A1 EP 3610955A1
Authority
EP
European Patent Office
Prior art keywords
media
valve
stator
control channel
selection head
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Withdrawn
Application number
EP19197160.5A
Other languages
German (de)
English (en)
Inventor
Harald Sonnleitner
Rolf Weiler
Heinz-Dieter Sonnleitner
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.)
Apson Lackiertechnik GmbH
Original Assignee
Apson Lackiertechnik GmbH
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 Apson Lackiertechnik GmbH filed Critical Apson Lackiertechnik GmbH
Publication of EP3610955A1 publication Critical patent/EP3610955A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • 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
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages

Definitions

  • the invention relates to a color change system according to the preamble of claim 1.
  • a color change system in which fluid pressure-controlled media valves are arranged in a stator, a media inlet arranged in a selection head, which was rotated in front of the media valve outlet of an open media valve, being supplied with a colored medium (lacquer). Furthermore, a flushing line is provided which opens laterally into the media line adjoining the media inlet. Such an arrangement only allows the media line to be flushed when the selection head rests on the stator. Thus, during a flush, the selection head cannot be rotated with respect to the stator and thus there can be no color change.
  • the media valve consists of a valve closing body and a valve seat in the stator and a fluid-operated tappet in the selection head. For flushing, this is withdrawn so that the media valve closes. A flush valve is then opened to flush the media line. The selection head rests on the stator to keep the media inlet closed.
  • the media valve is actuated by a plunger fixed to the selection head.
  • the selection head rests on the stator to keep the media inlet closed when the media line is flushed.
  • the invention is based on the task of simplifying the control of the media valves and making them safer and of creating a possibility that the media line can be flushed during a color change.
  • the invention provides that the color change system has a fluid connection, which is connected via a control channel to the control pressure chambers of the media valves in order to switch them, and that means are provided to ensure that the media valve that is in Coverage is located with the media inlet, can only be opened if the stator and the selection head are coupled together.
  • the invention further provides that the stator has a fluid connection, which in each case has a control channel with the control pressure chambers of the media valves is connected to switch them, that in each of these control channels there is a switching valve that can be mechanically actuated by a cam, and that a cam is attached to the rear of the selection head, which, when the rear of the selection head is applied to the front of the stator , opens the switching valve belonging to the media valve whose media valve outlet in the stator is connected to the media inlet in the selection head.
  • Such an actuation can be implemented most simply by the fact that the selection head can be moved perpendicularly to the front of the stator, that the cam is formed on the rear of the selection head and projects vertically from it, that the switching valves are accommodated in the bores opening into the front of the stator, the cam being adapted to immerse in the bores and the bores being oriented to the media valve outlets in the same manner as the cam to the media inlet.
  • the invention provides that the media valves are fluid-controlled, that the stator for each media valve has a fluid connection on the front of the stator, which is connected via a control channel to the control pressure chamber of the associated media valve in order to switch it, a check valve being present in each control channel that blocks towards the fluid connection, and that a collection control channel runs in the selection head, which opens into the rear of the selection head, the opening of the collection control channel being aligned with the fluid connection, the control channel leading to the media valve, the media valve outlet of which is in register with the media inlet.
  • a color change can take place relatively quickly if a check valve is arranged in the media inlet in the immediate connection to the rear of the selection head, which blocks towards the back of the selection head and that the flushing line in which the flushing check valve is located opens into the media line downstream of the check valve.
  • stator and the selection head can be separated from one another during a color change.
  • the media line can still be flushed because the check valve blocks the media inlet.
  • the media line in the selection head is flushed so that the color fed in via the next media valve does not mix with the remnants in the media line.
  • the conversion time is used to rinse the media line, so that the change between two colors can take place more quickly.
  • Some rarely used colors are only introduced via a single media valve. Its media supply is connected to several paint containers via individually switchable lines. When changing colors, the media valve must also be cleaned.
  • the invention is therefore based on the object of a color change system with at least one multi-color media valve, to which several colors are connected, to be set up so that it is possible to clean them after a color change and not to hinder a color change by moving the selection head to other media valves.
  • the invention provides that at least one of the media valves is assigned a circulation valve in the stator, the outlet of which has a connection to the inlet of the media valve, and that the media valve is designed such that it is open when its control pressure chamber is pressurized the valve closing body of the circulation valve is connected to an actuating piston which can be acted upon by a fluid pressure and which is arranged within the stator and which adjoins a control pressure chamber, the circulation valve being designed such that it is closed when its control pressure chamber is pressurized.
  • a control pressure is applied to both control pressure chambers for painting, whereby the media valve opens and the circulation valve closes. Paint that is in contact with the media feed of the media valve is fed through the open media valve into the media line.
  • the control pressure is taken from the control pressure chambers so that the media valve closes and the circulation valve opens.
  • the current paint can first be fed from the media valve back into a container via the switching valve by means of a sliding medium and then the media valve is cleaned by means of a purge air.
  • the selection head Since the media outlet of the media valve is closed, the selection head need not be docked. Rather, this can be in one position to another Media valve are brought so that you can work with the paint supplied there.
  • This arrangement allows the media valve to be flushed so that it can be used as a multi-color media valve.
  • control pressure chamber of the circulation valve is connected to the fluid connection via a switchable additional control channel.
  • the additional control channel is switched with the switching valve of the associated media valve. Control channel and additional control channel are thus opened or closed at the same time.
  • an additional switching valve that can be mechanically actuated by a cam can be provided in the additional control channel.
  • control channel runs over the separating surface between the stator and the selection head.
  • the color change system consists of a stator 1 and a selection head 2, the z. B. is designed as a rotor.
  • the stator 1 there are a large number of media valves 3, each of which is connected to a media feed 4 and whose media valve outlets 5 are located in the front 6 of the stator 1.
  • the media valves 3 are z. B. on a circle, so that by rotating the selection head 2, the media line 7, which opens into a media inlet 8 in the rear 9 of the selection head 2, can be brought to cover with one of the media valve outlets 5.
  • a check valve 10 that opens into the media line 7.
  • a flush line 11 opens, in which there is a further flush check valve 12 which opens in the direction of the media line 7.
  • the media valve 3 is controlled by compressed air (in principle, hydraulic control is also possible).
  • the valve closing body is connected to an actuating piston which can be acted upon by a fluid pressure and which is arranged within the stator and which adjoins a control pressure chamber.
  • the actuating piston is not shown here.
  • a suitable version of the media valve with an actuator is in the DE 10 2015 102 332 A1 described:
  • the valve closing body are located within a valve chamber formed in the stator and can be displaced against a valve sealing seat directed into the valve chamber.
  • Each media valve 3 is embedded in a cartridge which is fastened in a recess on the back of the stator 1. Inside the cartridge is a hollow valve stem, on the head of which the conical valve closing body is attached. This interacts with the likewise conical valve seat, which is formed in the head of the cartridge.
  • the hollow design of the valve stem ensures that the medium is guided in a streamlined manner.
  • the back of the stator 1 has a fluid or compressed air connection 16 on a ring line 17, which is connected via a control channel 18 to the actuation of the media valves 3.
  • a switching valve 19 which has a dumbbell-shaped closing body 20, one head of the closing body 20 being able to be placed against a sealing ring 21, so that the control channel 18 is closed.
  • the closing body 20 is actuated by means of a cam 22 which is located on the rear 9 of the selection head 2 and which plunges into a bore 23 in which the switching valve 19 is located.
  • the Fig. 1 shows that the stator 1 and the selection head 2 are placed against one another, that is to say are coupled, so that the cam 22 dips into the bore 23 and the switching valve 19 opens, so that the control channel 18 is released.
  • the media valve 3 is still closed, ie its valve closing body 24 is still against the valve sealing seat 25.
  • the check valve 10 is slightly opened because its valve ball is placed on the valve closing body 24 of the media valve 3.
  • the Fig. 2 shows the situation in which compressed air is applied to the compressed air connection 16.
  • the media valve 3 opens, whereby the valve closing body 24 moves away from the valve sealing seat 25.
  • the inflowing paint pushes the valve ball of the check valve 10 in front of it and opens the media inlet 8 further.
  • the flush line 11 is blocked by the flush check valve 12.
  • a color To change a color, first, as in Fig. 3 shown, the compressed air is switched off again, so that the media valve 3 closes and the check valve 10 also changes into a largely closed position. If a flushing agent is now introduced via the flushing line 11, the flushing check valve 12 opens and the flushing agent flows into the media line 7. An escape via the media inlet 8 is prevented since the latter is sealed off from the outside by means of a sealing ring 26.
  • the switching valve 19 is first closed, because the cam 22 has withdrawn from the bore 23.
  • the check valve 10 closes, so that the media inlet 8 is closed and the flushing can continue during the movement of the selection head 2 to the next media valve 3. This is a significant time saver.
  • each media valve 3 is connected to its own control channel 31 with its own fluid connection 32 in the front side 6 of the stator 1.
  • each fluid connection 32 there is a check valve 33, which closes towards the front 6.
  • the selection head 2 there is a single collective control channel 34, which is connected to a fluid source (compressed air connection), not shown here.
  • the mouth of the collective control channel 34 is aligned with the fluid connection 32 (compressed air connection), whose control channel 31 leads to the media valve 3, the media valve outlet 5 of which is in register with the media inlet 8 in the selection head 2.
  • An actuation with compressed air opens the media valve 3, so that varnish is conducted into the media line 7 to a spray head, not shown here.
  • a media valve 3 which is to be used as a multicolor media valve, with a circulation valve 40 is shown.
  • the connection of the media valve 3 corresponds to that as in the 1 to 4 is shown.
  • the circulation valve 40 which in principle has the same structure as the media valve.
  • the actuating piston not shown here, is arranged such that pressure is applied to one via an additional control channel 42 Closing the valve - and not - as with the media valve, leads to the valve opening.
  • media valve 3 and circulation valve 40 shown here serves to clarify the mode of operation. As a rule, so many media valves 3 are required that they are arranged in two circles on the stator 1. The media valves 3 and the circulation valves 40 are then preferably arranged in different circles, offset from one another. As a rule, this also makes it necessary to provide two parallel switching valves (19, 41), namely one for the media valve 3 and an additional switching valve 41 for the circulation valve 40, as shown here. In terms of function, however, only one switching valve is required, which opens and closes both control channels 18, 42.
  • the media valve outlet of the circulation valve 40 has no opening in the front 6 of the stator 1, but rather is connected to the valve chamber of the media valve 3 via a connecting channel 44 within the stator 1.
  • the additional control channel 42 to the circulation valve 40 can also from the switching valve 19 of the media valve 3 are checked so that the additional switching valve 41 shown for the circulation valve 40 can be dispensed with.
  • Fig. 8 shows the same situation as in Fig. 7 , However, here a control pressure is applied to the fluid connection 16, which causes the media valve 3 to open and the circulation valve 40 to close.
  • a medium that rests on the media feed 4 of the media valve can, as in connection with the 1 to 4 described, via the open media valve 3 into the media line 7 and further to a consumption (spray gun). There is no return of the medium via the circulation valve 40, since this is closed.
  • Fig. 9 shows the situation with a color change.
  • the selection head 2 is removed from the stator 1 and can thus be rotated into a new position, so that its media inlet 8 can be moved to the media valve outlet of another media valve.
  • cams 22, 45 are also removed from the switching valves 19, 41, they are closed, so that regardless of a pressurization at the fluid connection 16, which may be necessary to open the other media valves, the media valve 3 shown is closed and the circulation valve 40 is open.
  • a so-called sliding medium is first inserted into the media feed 4 of the media valve, which pushes the current color out of the media valve 3 and the circulation valve 40, and then, alternately, flushing medium and air are fed in around the media valve, the connecting channel 44 and the circulation valve from paint residues to free. It is then possible to apply a new paint color via the media feed 4 of the media valve 3.
  • valve stem has a hollow channel 50 which ends in front of the valve closing body 24 and which has lateral exits 51.
  • the head dips into a sleeve 52, in which the valve sealing seat 25 of the media valve 3 is formed and in the outer lateral surface of which a circumferential groove runs. Since the lateral surface rests on the wall of a media valve receiving bore in the stator 1, an annular channel 53 is formed which is connected to the hollow channel 50 via a transverse bore 54 in the sleeve 52.
  • the transverse bore 54 is located at the level of the lateral outputs 51 of the valve closing body 24 when the latter is in a closed position.
  • the connecting channel 44 opens into the annular channel 53 opposite the transverse bore 54.
  • the air or the flushing medium which emerges from the side exits 51 is therefore forced to flow around the outside of the valve closing body 24 in order to reach the annular channel 53 via the transverse bore 54 and to flow from there in the direction of the connecting channel 44 can.
  • This opposite arrangement of Connecting channel 44 and transverse bore 54 ensures that the valve closing body 24 is cleaned on all sides.

Landscapes

  • Multiple-Way Valves (AREA)
  • Spray Control Apparatus (AREA)
EP19197160.5A 2015-04-15 2016-04-15 Système de changement de couleur Withdrawn EP3610955A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102015105774 2015-04-15
EP16728214.4A EP3283231B1 (fr) 2015-04-15 2016-04-15 Système de changement de couleur
PCT/DE2016/100181 WO2016165698A1 (fr) 2015-04-15 2016-04-15 Système de changement de couleur

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP16728214.4A Division EP3283231B1 (fr) 2015-04-15 2016-04-15 Système de changement de couleur
EP16728214.4A Division-Into EP3283231B1 (fr) 2015-04-15 2016-04-15 Système de changement de couleur

Publications (1)

Publication Number Publication Date
EP3610955A1 true EP3610955A1 (fr) 2020-02-19

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP16728214.4A Active EP3283231B1 (fr) 2015-04-15 2016-04-15 Système de changement de couleur
EP19197160.5A Withdrawn EP3610955A1 (fr) 2015-04-15 2016-04-15 Système de changement de couleur

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP16728214.4A Active EP3283231B1 (fr) 2015-04-15 2016-04-15 Système de changement de couleur

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EP (2) EP3283231B1 (fr)
DE (2) DE102016107042A1 (fr)
WO (1) WO2016165698A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107694856B (zh) * 2017-11-17 2023-05-23 常德烟草机械有限责任公司 一种自动对接系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240225A (en) * 1963-01-17 1966-03-15 Benjamin G Barrows Selecting and purging apparatus
DE4339302A1 (de) * 1993-11-18 1995-05-24 Abb Patent Gmbh Farbwechselblock
WO2001051216A2 (fr) * 2000-01-14 2001-07-19 Sames Technologies Installation de projection de produit de revetement
US20030042340A1 (en) * 2000-12-07 2003-03-06 Clifford Scott J. Voltage block and color change apparatus for waterborne bell applicator
DE20122759U1 (de) 2001-03-29 2007-07-19 Dürr Systems GmbH Farbwechselsystem für eine Beschichtungsanlage
EP2075073A1 (fr) 2007-12-28 2009-07-01 Industra Industrianlagen - Maschinen und Teile GmbH Système de changement de couleur et procédé de changement de couleur
DE102015102332A1 (de) 2014-02-18 2015-08-20 Apson Lackiertechnik Gmbh Farbwechselsystem

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5596950B2 (ja) * 2009-09-23 2014-09-24 ランズバーグ・インダストリー株式会社 静電塗装機用の塗料カートリッジ及びこれを含む静電塗装機

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240225A (en) * 1963-01-17 1966-03-15 Benjamin G Barrows Selecting and purging apparatus
DE4339302A1 (de) * 1993-11-18 1995-05-24 Abb Patent Gmbh Farbwechselblock
WO2001051216A2 (fr) * 2000-01-14 2001-07-19 Sames Technologies Installation de projection de produit de revetement
US20030042340A1 (en) * 2000-12-07 2003-03-06 Clifford Scott J. Voltage block and color change apparatus for waterborne bell applicator
DE20122759U1 (de) 2001-03-29 2007-07-19 Dürr Systems GmbH Farbwechselsystem für eine Beschichtungsanlage
EP2075073A1 (fr) 2007-12-28 2009-07-01 Industra Industrianlagen - Maschinen und Teile GmbH Système de changement de couleur et procédé de changement de couleur
DE102015102332A1 (de) 2014-02-18 2015-08-20 Apson Lackiertechnik Gmbh Farbwechselsystem

Also Published As

Publication number Publication date
WO2016165698A1 (fr) 2016-10-20
DE102016107042A1 (de) 2016-10-20
DE112016001728A5 (de) 2018-01-04
EP3283231B1 (fr) 2020-07-29
EP3283231A1 (fr) 2018-02-21

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