EP1477231B2 - Dispositif pour la préservation des espaces creux - Google Patents

Dispositif pour la préservation des espaces creux Download PDF

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Publication number
EP1477231B2
EP1477231B2 EP04011308.6A EP04011308A EP1477231B2 EP 1477231 B2 EP1477231 B2 EP 1477231B2 EP 04011308 A EP04011308 A EP 04011308A EP 1477231 B2 EP1477231 B2 EP 1477231B2
Authority
EP
European Patent Office
Prior art keywords
line
valve
atomizer
pressure
preservative
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.)
Expired - Lifetime
Application number
EP04011308.6A
Other languages
German (de)
English (en)
Other versions
EP1477231A2 (fr
EP1477231A3 (fr
EP1477231B1 (fr
Inventor
Tilo Eisenhardt
Ralph Henschel
Lothar Rademacher
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.)
Duerr Systems AG
Original Assignee
Duerr Systems AG
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
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Application filed by Duerr Systems AG filed Critical Duerr Systems AG
Publication of EP1477231A2 publication Critical patent/EP1477231A2/fr
Publication of EP1477231A3 publication Critical patent/EP1477231A3/fr
Application granted granted Critical
Publication of EP1477231B1 publication Critical patent/EP1477231B1/fr
Publication of EP1477231B2 publication Critical patent/EP1477231B2/fr
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
    • 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
    • B05B7/2489—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 an atomising fluid, e.g. a gas, being supplied to the discharge device
    • 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
    • B05B12/1418—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 for supplying several liquids or other fluent materials in selected proportions to a single spray outlet
    • B05B12/1427—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 for supplying several liquids or other fluent materials in selected proportions to a single spray outlet a condition of a first liquid or other fluent material in a first supply line controlling a condition of a second one in a second supply line
    • B05B12/1436—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 for supplying several liquids or other fluent materials in selected proportions to a single spray outlet a condition of a first liquid or other fluent material in a first supply line controlling a condition of a second one in a second supply line the controlling condition of the first liquid or other fluent material in the first supply line being its flow rate or its pressure

Definitions

  • the invention relates to a device for preserving cavities, in particular on motor vehicle bodies, according to the preamble of claim 1.
  • the cavities of the vehicle body to be preserved are poured with solvent-free wax that has been liquefied by heating, with part of the wax being deposited on the cavity walls and thereby preserving them while the excess wax runs off.
  • the wax serving as preservative is sprayed onto the inner walls of the cavities, for which purpose a lance can be used, for example, which is inserted from the outside into the cavities and has outlet openings for the preservative at its tip.
  • a device for cavity preservation according to the spraying method which has a pre-atomizer in order to atomize the wax serving as preservative in a compressed air stream.
  • the degree of atomization of the pre-atomizer can be adjusted by changing the atomizer nozzle.
  • the disadvantage of this known device for cavity preservation according to the spraying method is the fact that the degree of atomization of the pre-atomizer and thus the droplet size cannot be adjusted during cavity preservation.
  • the invention is therefore based on the object of creating the possibility of adjusting the degree of atomization and thus the droplet size in the above-described known device for preserving cavities in accordance with the spraying method.
  • the invention comprises the general technical teaching of providing a control line through which the degree of atomization of the pre-atomizer and thus the droplet size can be adjusted.
  • the advantage of the invention is, in particular, the better application of the preservative with, at the same time, lower material consumption.
  • control line for setting the degree of atomization of the pre-atomizer opens directly into the pre-atomizer, so that the pre-atomizer has two inputs and one output.
  • the only decisive factor for the function of the device according to the invention is that the degree of atomization of the preservative dispensed can be set via the control line.
  • Wax is preferably used as the preservative in the device according to the invention for cavity preservation, but the invention is not limited to waxes with regard to the preservative to be used, but can also be implemented with other preservatives that are deposited on the inner walls of a cavity and increase the corrosion resistance.
  • compressed air is preferably used as the means of transport for the atomized preservative, since compressed air can be obtained inexpensively and is usually available anyway.
  • the invention is not limited to compressed air, but can also be implemented with other fluids as means of transport, in which case gaseous means of transport are particularly suitable in addition to liquid means of transport.
  • the pre-atomizer is connected on the output side to a controllable output valve which controls the delivery rate of the atomized preservative.
  • the outlet valve is preferably a pneumatically controllable valve, such as a 2/2-way valve, but the device according to the invention can also be implemented with an electrically controllable outlet valve.
  • the actual delivery of the atomized preservative in the device according to the invention is preferably carried out by a lance with a rotating nozzle which is inserted into the cavity to be preserved and evenly coats the inner walls of the cavity due to the rotating movement of the nozzle.
  • the output valve is preferably controlled in accordance with the desired output quantity and the pre-atomizer is controlled in accordance with the desired degree of atomization by separate control lines in order to enable the degree of atomization and the output quantity to be optimally set independently of one another in accordance with the respective operating conditions.
  • the two control lines for the outlet valve and the pre-atomizer and / or the transport medium line opening into the pre-atomizer preferably branch off from a common pressure line, the individual adjustment of the pressure in the branching lines preferably being carried out by control valves that are in the two control lines and are arranged in the transport line.
  • the pressure prevailing in the pressure line upstream of the branch is therefore passed on to the outlet valve or the pre-atomizer by suitable activation of the individual control valves.
  • a pressure regulator is arranged in one or both control lines and / or in the transport medium line in order to set the desired pressure.
  • control valves for the means of transport or control line and / or the pressure regulators are arranged together in a valve unit, the valve unit being attached to a movable axis of a robot.
  • the valve unit is attached to the third axis of the robot, but the valve unit can also be attached to other axes of the robot within the scope of the invention.
  • the valve unit is preferably arranged as close as possible to the respective application device (e.g. an atomizer).
  • the outlet valve is preferably attached to another axis of the robot together with the pre-atomizer, attachment to the sixth axis of the robot being particularly advantageous in the case of a six-axis robot.
  • the device according to the invention with a pre-atomizer it is also possible for the device according to the invention with a pre-atomizer to be integrated into a manual application device, such as a spray lance or a spray gun.
  • the device shown as a preferred embodiment of the invention is used for the cavity preservation of motor vehicle bodies, but the device shown can also be used for the cavity preservation of other objects.
  • the cavity is preserved by means of a wax that is supplied via a shut-off valve 1 and a preservative line 2.
  • a pressure regulator 3 is arranged, which sets a predetermined pressure in the preservative line 2.
  • a flow meter 4 Downstream of the pressure regulator 3 in the preservative line 3 there is also a flow meter 4 which measures the mass or volume flow of the wax flowing through the preservative line 2, the flow meter 4 in this embodiment being mounted on the third axis of a six-axis robot.
  • the output signal of the flow measuring device 4 can be evaluated by a control unit which controls the individual valves 1, 6, 15, 17, 21 and 20, the control unit not being shown for the sake of simplicity.
  • the wax supplied via the preservative line 2 cannot, however, be applied directly to the inner walls of the cavity to be preserved, but is atomized beforehand by means of compressed air.
  • the device according to the invention therefore has a compressed air line 5 which is connected to a compressed air source via a shut-off valve 6, the compressed air source not being shown for the sake of simplicity.
  • a filter 7 with a separator and a further filter 8 without a separator are arranged downstream behind the shut-off valve.
  • a pressure regulator 9 is also arranged in order to regulate the pressure in the compressed air line 5 downstream behind the pressure regulator 9 to a predetermined target value.
  • a pressure display device 10 is connected to the output of the pressure regulator 9.
  • the compressed air line 5 branches into two control lines 11, 12 and into a transport air line 13.
  • the transport air line 13 opens into one Pre-atomizer 14, into which the preservative line 2 also opens, wherein the compressed air entering the pre-atomizer 14 entrains particles of the wax supplied in the preservative line 2 and thereby atomizes them.
  • a 5/2-way valve 15 is arranged in the transport air line 13 upstream of the pre-atomizer 14 in order to control the volume flow of the compressed air supplied via the transport air line 13, the 5/2-way valve 15 being controlled electrically and in the drawing is not shown for the sake of simplicity.
  • a pressure regulator 16 is also arranged upstream in front of the 5/2-way valve 15 in order to regulate the pressure in the transport air line 13 upstream in front of the 5/2-way valve 15 to a predetermined target value.
  • the control line 12 also opens into the pre-atomizer 14 somewhat downstream behind the transport air line 13 and enables the degree of atomization of the pre-atomizer 14 and thus also the droplet size to be adjusted.
  • a 5/2-way valve 17, which is also controlled electrically, is also arranged in the control line 12 upstream of the pre-atomizer 14.
  • a further pressure regulator 18 is arranged in the control line 12 upstream of the 5/2-way valve 17, the two pressure regulators 16, 18 enabling different pressure regulation in the control line 12 on the one hand and in the transport air line 13 on the other hand.
  • the control line 11 has the task of controlling the amount of preservative dispensed, the preservative being sprayed off by a spray lance 19 which is connected to the pre-atomizer 14 via an outlet valve 20.
  • a further 5/2-way valve 21 is arranged in the control line 11 upstream of the outlet valve 20 in order to set the pressure in the control line 11 in accordance with the desired delivery rate.
  • the 5/2-way valves 15, 17, 21 are arranged here together with the two pressure regulators 16, 18 in a valve unit 22, the valve unit 22 being attached to the third axis of the six-axis robot.
  • the spray lance 19 is arranged together with the outlet valve 20 and the pre-atomizer 14 in an application unit 23, the application unit 23 being attached to the sixth axis of the six-axis robot.
  • the pre-atomizer 14 has a transport air connection 24, the transport air connection 24 in the pre-atomizer 14 merging into a nozzle which opens into a cavity.
  • the compressed air supplied via the transport air line 13 is relaxed, which leads to a corresponding negative pressure in the cavity of the pre-atomizer 14.
  • the pre-atomizer 14 has a preservative connection 25 to which the preservative line 2 is connected, the preservative connection 25 opening into the cavity in the pre-atomizer 14 so that the wax serving as preservative is carried along from the preservative line 2 and is atomized in the process.
  • the pre-atomizer has a control air connection 26 to which the control line 12 is connected, the control air connection 26 in the pre-atomizer 14 opening downstream behind the preservative connection 25 into the cavity of the pre-atomizer 14.
  • the compressed air supplied via the control line 12 therefore influences the degree of atomization of the pre-atomizer 14, so that the degree of atomization can be adjusted by a corresponding pressure regulation in the control line 12.
  • the pre-atomizer 14 has a dispensing connection 27, via which the pre-atomizer is connected to the outlet valve 20, with fluidized preservative being dispensed at the dispensing connection 27 of the pre-atomizer 14.
  • a special feature of the pre-atomizer 14 ' consists in a detergent connection 28' to which a detergent line can be connected, the detergent line in Figure 1 is not shown for the sake of simplicity.
  • the detergent connection 28 ' opens in the pre-atomizer 14' downstream behind the control air connection 26 into the cavity in the pre-atomizer 14 '.

Landscapes

  • Nozzles (AREA)
  • Coating Apparatus (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Packages (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (7)

  1. Dispositif pour le revêtement protecteur de cavités, en particulier pour des pièces de carrosserie de véhicule automobile, comportant
    a) une conduite d'agent protecteur (2) pour l'amenée d'un agent protecteur,
    b) une conduite d'agent de transport (13) pour l'amenée d'un agent de transport, et
    c) un pré-pulvérisateur (14, 14') pour la pulvérisation de l'agent protecteur dans l'agent de transport, le pré-pulvérisateur (14, 14') étant raccordé côté admission à la conduite d'agent protecteur (2) et à la conduite d'agent de transport (13), et le degré de pulvérisation du pré-pulvérisateur (14, 14') étant réglable,
    caractérisé en ce
    d) que le degré de pulvérisation du pré-pulvérisateur (14, 14') et donc la taille des gouttelettes de l'agent de conservation est réglable,
    e) que une première conduite de commande (12) est prévue au moyen de laquelle le degré de pulvérisation du pré-pulvérisateur (14, 14') est réglable, le pré-pulvérisateur (14, 14') étant raccordé côté admission à la première conduite de commande (12),
    f) que la première conduite de commande (12) et la conduite d'agent de transport (13) sont dérivées d'une conduite de pression (5) commune.
  2. Dispositif selon la revendication 1, caractérisé en ce que le pré-pulvérisateur (14, 14') est raccordé côté sortie à une vanne de sortie (20) excitable qui commande le débit de l'agent protecteur pulvérisé.
  3. Dispositif selon la revendication 2, caractérisé en ce que la vanne de sortie (20) est raccordée à une deuxième conduite de commande (11) pour la commande de débit.
  4. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'une première vanne de commande (17) est disposée dans la première conduite de commande (12) et/ou une deuxième vanne de commande (21) dans la deuxième conduite de commande (11) et/ou une troisième vanne de commande (15) dans la conduite d'agent de transport (13).
  5. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'un premier régulateur de pression (17) est disposé dans la première conduite de commande (12) et/ou un deuxième régulateur de pression (16) dans la conduite d'agent de transport (13).
  6. Dispositif selon la revendication 4 ou 5, caractérisé en ce que la première vanne de commande (17) et/ou la deuxième vanne de commande (21) et/ou la troisième vanne de commande (15) et/ou le premier régulateur de pression (17) et/ou le deuxième régulateur de pression (16) sont disposés ensemble dans une unité de vanne (22), ladite unité de vanne (22) étant montée sur un premier axe mobile d'un robot.
  7. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la vanne de sortie (20) et/ou le pré-pulvérisateur (14, 14') sont montés sur un deuxième axe mobile d'un robot.
EP04011308.6A 2003-05-16 2004-05-12 Dispositif pour la préservation des espaces creux Expired - Lifetime EP1477231B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10322170A DE10322170A1 (de) 2003-05-16 2003-05-16 Vorrichtung zur Hohlraumkonservierung und Vorzerstäuber
DE10322170 2003-05-16

Publications (4)

Publication Number Publication Date
EP1477231A2 EP1477231A2 (fr) 2004-11-17
EP1477231A3 EP1477231A3 (fr) 2005-06-29
EP1477231B1 EP1477231B1 (fr) 2008-07-09
EP1477231B2 true EP1477231B2 (fr) 2021-12-01

Family

ID=33016425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04011308.6A Expired - Lifetime EP1477231B2 (fr) 2003-05-16 2004-05-12 Dispositif pour la préservation des espaces creux

Country Status (4)

Country Link
EP (1) EP1477231B2 (fr)
AT (1) ATE400365T1 (fr)
DE (2) DE10322170A1 (fr)
ES (1) ES2309417T5 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009052654A1 (de) 2009-11-11 2011-05-12 Dürr Systems GmbH Vorrichtung und Verfahren zur Konservierung von Bauteilen
US20180169689A1 (en) * 2015-06-12 2018-06-21 Ipr - Intelligente Peripherien Für Roboter Gmbh Preservation installations for vehicle bodies, method for the preservation of a vehicle body and vehicle body
DE102022113397A1 (de) 2022-05-27 2023-11-30 Festo Se & Co. Kg Steuerung eines Volumenstroms eines Fluids mittels einer Ventilanordnung
CN116877736B (zh) * 2023-07-11 2025-09-16 宁波三安制阀有限公司 一种气液两相多用气瓶阀

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EP0686430A2 (fr) † 1994-06-08 1995-12-13 ITW Gema AG Injecteur pour le transport pneumatique de poudre
EP0763385A1 (fr) † 1995-09-18 1997-03-19 Elpatronic Ag Procédé de transport d'un matériaux pulvérulent au moyen d'un injecteur
US5887800A (en) † 1997-09-03 1999-03-30 Fanuc Robotics North America, Inc. Robot wrist and spray applicator
EP0913203A1 (fr) † 1997-11-03 1999-05-06 ITW Gema AG Méthode et appareil de revêtement par poudre avec alimentation d'air de purge
US6053434A (en) † 1995-07-12 2000-04-25 Ab Volvo Device for application of fluid
EP1078693A1 (fr) † 1999-08-25 2001-02-28 Eftec Ag Dipositif et procédé pour étaler et/ou durcir thermiquement et/ou sécher un revêtement
DE69619439T2 (de) † 1995-07-28 2002-09-26 L'air Liquide, S.A. Pour L'etude Et L'exploitation Des Procedes Georges Claude Vorrichtung zur Zerstäubung einer Flüssigkeit

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DE3616235A1 (de) * 1986-05-14 1987-11-19 Daimler Benz Ag Spruehduesentraeger zum automatisierten beschichten von hohlraeumen einer kraftfahrzeug-karosserie mit korrosionsschutzmitteln
DE3910179C1 (fr) * 1989-03-29 1990-03-29 J. Wagner Gmbh, 7990 Friedrichshafen, De
DE3939992C2 (de) 1989-12-02 2000-10-12 Juergen Hiesl Sprühkopf zum automatischen Auftragen und Verteilen von Flüssigkeiten, insbesondere für feinsten Mengendurchsatz und nebelarmen, zuverlässigen Betrieb
IT1311897B1 (it) * 1999-03-12 2002-03-20 Taccon Costruzioni Meccaniche Testina di spruzzo con doppio ugello.
DE10042325A1 (de) 2000-08-29 2002-03-14 Alstom Power Nv Zerstäubungsvorrichtung sowie Verfahren zum Zerstäuben einer Flüssigkeit

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0686430A2 (fr) † 1994-06-08 1995-12-13 ITW Gema AG Injecteur pour le transport pneumatique de poudre
US6053434A (en) † 1995-07-12 2000-04-25 Ab Volvo Device for application of fluid
DE69619439T2 (de) † 1995-07-28 2002-09-26 L'air Liquide, S.A. Pour L'etude Et L'exploitation Des Procedes Georges Claude Vorrichtung zur Zerstäubung einer Flüssigkeit
EP0763385A1 (fr) † 1995-09-18 1997-03-19 Elpatronic Ag Procédé de transport d'un matériaux pulvérulent au moyen d'un injecteur
US5887800A (en) † 1997-09-03 1999-03-30 Fanuc Robotics North America, Inc. Robot wrist and spray applicator
EP0913203A1 (fr) † 1997-11-03 1999-05-06 ITW Gema AG Méthode et appareil de revêtement par poudre avec alimentation d'air de purge
EP1078693A1 (fr) † 1999-08-25 2001-02-28 Eftec Ag Dipositif et procédé pour étaler et/ou durcir thermiquement et/ou sécher un revêtement

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Title
Ausdruck zu "Konservierung" aus Wikipedia †
Ausdruck zu "Lack" aus Wikipedia †
Ausdruck zu "Pulverlack" aus Wikipedia †
Ausdruck zu "Regelungstechnik" aus Wikipedia †
Ausdruck zu "Zerstäuben" aus Wikipedia †
Auszug "Vieweg Handbuch der Kraftfahrzeugtechnik". Seiten 407-408 †
Auszug aus Johan Bieleman. Lackadditive, Wiley-VCH Verlag. Ausgabe 1998: Seiten 1.148,149, 162 †
Auszug aus Römpp. Lacke und Druckfarben. Ausgabe 1998: Seiten 49-50, 345-346, 478-480, 615 †
Auszug Pavel Svejda: "Prozesse und Applikationsverfahren"; Seite 51 †
Auszug Römp Chemie Lexikon: Lacke, Seiten 2424-2425 †
EMS-EFTEC Prospekt, Seite 3 †
Online-Duden "Zerstäuben" †
Pulverbeschichtung, Seite 3681; Zerstäubern/Zerstäuber, Seite 5123 †

Also Published As

Publication number Publication date
EP1477231A2 (fr) 2004-11-17
ATE400365T1 (de) 2008-07-15
ES2309417T3 (es) 2008-12-16
DE502004007532D1 (de) 2008-08-21
ES2309417T5 (es) 2022-04-12
EP1477231A3 (fr) 2005-06-29
EP1477231B1 (fr) 2008-07-09
DE10322170A1 (de) 2004-12-09

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