EP3205407B1 - Method and installation for covering internal walls of a cavity with a protective layer made of corrosion protecting wax - Google Patents

Method and installation for covering internal walls of a cavity with a protective layer made of corrosion protecting wax Download PDF

Info

Publication number
EP3205407B1
EP3205407B1 EP16154796.3A EP16154796A EP3205407B1 EP 3205407 B1 EP3205407 B1 EP 3205407B1 EP 16154796 A EP16154796 A EP 16154796A EP 3205407 B1 EP3205407 B1 EP 3205407B1
Authority
EP
European Patent Office
Prior art keywords
cavity
mist
wax
protective
outlet opening
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.)
Active
Application number
EP16154796.3A
Other languages
German (de)
French (fr)
Other versions
EP3205407A1 (en
Inventor
Fredy Doll
Marc Engelhart
Bernhard Woll
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.)
IPR Intelligente Peripherien fuer Roboter GmbH
Original Assignee
IPR Intelligente Peripherien fuer Roboter 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 IPR Intelligente Peripherien fuer Roboter GmbH filed Critical IPR Intelligente Peripherien fuer Roboter GmbH
Priority to EP16154796.3A priority Critical patent/EP3205407B1/en
Priority to US16/070,447 priority patent/US10870124B2/en
Priority to EP17703199.4A priority patent/EP3414020B1/en
Priority to PCT/EP2017/052932 priority patent/WO2017137520A1/en
Priority to CN201780010667.1A priority patent/CN108698066B/en
Publication of EP3205407A1 publication Critical patent/EP3205407A1/en
Application granted granted Critical
Publication of EP3205407B1 publication Critical patent/EP3205407B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • 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
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
    • B05B12/06—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery for effecting pulsating flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2259/00—Applying the material to the internal surface of hollow articles other than tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2501/00—Varnish or unspecified clear coat
    • B05D2501/10—Wax
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0218—Pretreatment, e.g. heating the substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies

Definitions

  • the invention relates to a method for covering inner walls of a cavity of a vehicle body (10) or an attachment for a vehicle body with a protective layer of anti-corrosion wax according to the preamble of claim 1.
  • the invention further relates to a system for carrying out the method according to the preamble of claim 1.
  • Generic methods are used in vehicle construction to protect cavities of bodies and their attachments such as flaps, doors and the like against environmental influences. Typically, this is done by either applying corrosion protection wax to the surfaces concerned by spraying or by flooding the cavities with anticorrosion wax and then removing excess protective wax to cover the surfaces concerned.
  • the object of the invention is to provide a technically uncomplicated method and a system provided for this purpose, by means of which, with a low protective wax insert, a reliable covering of inner surfaces of a cavity is possible.
  • Corrosion protection wax is brought into a misted form (protective wax mist) by means of a mist generator and fed through an outlet opening to the cavity to be preserved.
  • the mist generator generates the protective wax mist by mixing pressurized protective wax and pressurized air.
  • the droplets of the protective wax mist emerge from the outlet opening at a speed ⁇ 10 m / sec.
  • the protective wax mist is deposited on the inner walls of the cavity and forms here a corrosion protection wax layer.
  • a mist atmosphere of protective wax and gas is generated or such a mist atmosphere is supplied to the cavity.
  • This consists of gas, especially air, as well as the finest droplets of corrosion protection wax. These are sufficiently small atomized to be hoverable in the surrounding air.
  • the mean droplet size of the droplets of the corrosion protection wax in the mist is preferably ⁇ 120 .mu.m, in particular preferably ⁇ 80 .mu.m or even ⁇ 60 .mu.m, on average for this purpose.
  • the production of such a protective wax mist takes place by means of a suitable mist generator.
  • the fog atmosphere of the protective wax mist which is introduced according to the invention for the purpose of surface coating in the cavity, unlike spraying the anti-corrosion wax does not directly on the walls of the cavity down, but spreads in the cavity and is also reflected in surfaces starting from the exit opening would not be directly accessible by spraying.
  • the type of precipitation of the protective wax and the layer formation can be influenced. Furthermore, it is also possible by electrostatic charging of the wax before or during the discharge and / or charge of the walls to influence the precipitation.
  • the solidification can be effected by an elevated temperature and a reduced temperature of the protective wax.
  • chemical drying, radiation drying or drying by air flow is also possible.
  • the protective wax mist can remain in the cavity at the completion of the process or be sucked out of it.
  • corrosion protection wax to be used for cavity preservation in vehicles already commonly used for spraying or flooding waxes come into question.
  • the droplets of the protective wax mist can exit from the outlet opening at a speed ⁇ 5 m / sec, preferably ⁇ 2 m / sec, in particular preferably ⁇ 0.5 m / sec.
  • the developing fog atmosphere in a targeted manner in motion.
  • This can be controlled by the speed and exit direction of the exiting protective wax mist.
  • the control of this movement by otherwise supplied energy is possible.
  • the supply of the protective wax mist can take place at several points or at changing points within the cavity to be preserved.
  • the supply of the protective wax mist can also be effected by means of several mist generators, which are arranged at different locations within the cavity to be preserved and / or are arranged in different directions relative to the cavity to be preserved.
  • the introduction of the protective wax mist at only one point of the cavity may be sufficient, since the protective wax mist is distributed in the cavity, a particularly good and rapid distribution of the mist can be promoted by said additional measures.
  • the mist atmosphere can be created from both ends.
  • a movable within the cavity outlet opening which discharges at different locations, with only one outlet opening a fairly homogeneous fog atmosphere can be created.
  • a plurality of outlet openings which point in different directions, it is particularly well ensured, in particular in conjunction with a common movement of these outlet openings through the cavity, that the mist atmosphere also reaches hard-to-reach surface areas.
  • the protective wax mist By generating a pressure difference between two offending portions of the cavity, the protective wax mist can be moved within the cavity.
  • the protective wax mist By alternately generating an overpressure and a negative pressure in at least a partial area of the cavity, a periodically repeated movement of the protective mist in the cavity can be produced.
  • the protective wax mist is distributed basically independently in the cavity largely homogeneous. However, since short cycle times are desired depending on the application, it may be particularly advantageous to selectively move the protective wax mist through a local overpressure or negative pressure in the cavity. This can be done, for example, by the introduction or suction of air at an opening of the cavity, either by a separate from the outlet pressure opening of the cavity preservation system or through the outlet opening itself. By periodically repeated increases or decreases pressure can also cyclic movement of the protective wax mist be generated in the cavity through which a particularly favorable precipitation behavior of the protective wax is achieved on the surface.
  • a typical workpiece, which is protected against corrosion by the methods according to the invention, is the partial area of a body with an elongate cavity. In such a case, it is possible to allow the protective mist to escape through the outlet opening in alignment with the main extension direction of the cavity.
  • the protective mist can also escape in a direction out of the outlet opening, which is angled relative to the main extension direction of such a cavity.
  • a similar effect can be achieved by providing an influence after exiting the mist through the outlet opening.
  • the protective wax mist can be selectively influenced after leaving the outlet opening with regard to its direction of movement, in particular by supplying air from different air nozzles from the outlet opening. By their mutually angled orientation these air nozzles are also able to effect such a helical movement of the mist atmosphere.
  • Fog nozzles are already known from other areas of the prior art.
  • a mixture of protective wax and air which are each pressurized, takes place before the protective wax mist emerges.
  • the pressurized air ruptures the liquid supplied protective wax and thereby generates the mist.
  • mist generators and outlet openings may additionally be provided that they have a rotatable component, so that the outlet openings is during the exit of the protective wax in a rotational movement, which serves the homogeneous distribution of the protective wax.
  • the outlet opening may be connected upstream of a mist production chamber.
  • the mist generator may be configured to generate the protective wax mist in the mist production chamber. It may be provided for conveying the protective wax mist to the outlet conveyor.
  • the upstream mist production chamber serves to generate a homogeneous mist even before introduction into the cavity to be preserved.
  • a conveyor such as a pump to promote the protective wax mist or to generate an overpressure in the mist production chamber, this mist is supplied in the homogenized form of the cavity.
  • the method may find application for supplying the protective wax mist into a cavity between walls of a double-walled hollow body. It can also find application for supplying the protective wax mist in a cavity whose inner walls are covered at least in sections by other wall sections, starting from the positioning of the outlet opening within the cavity. Even surfaces of curved or angled cavities are to be provided by means of the described method advantageously with protective wax. In particular, in such designs can be achieved by the protective wax mist better results than by spraying the protective wax.
  • the system has a working position at which a workpiece with a cavity to be preserved can be positioned. It has a supply device for supplying a corrosion protection wax in the cavity.
  • the supply device has a mist generator with outlet opening which can be positioned on or in the cavity to be preserved in such a way that the corrosion protection wax can be introduced into the cavity in atomised form (protective wax mist).
  • the plant has air nozzles for introducing air for the purpose of moving the generated protective wax mist inside the cavity.
  • the system may have at least one pressure generator, by means of which in a partial region of the cavity a negative pressure or an overpressure can be generated.
  • the pressure generator may be provided with a control device, is generated by the periodically changing pressure within the cavity.
  • system may have further to the described method as well as in connection with the embodiments mentioned components.
  • FIG. 1 and 2 show an exemplary workpiece 10, which may be, for example, a portion of a sill of a motor vehicle. It puts FIG. 1 a cut and FIG. 2 a perspective, sectional view. As can be seen, a cavity 12 of this sill is limited not only by a cylindrical outer wall 20, but also by partition plates 22.
  • the aim of the method described here is to cover the surfaces within the cavity with corrosion protection wax.
  • the mentioned bulkhead plates 22, however, make it impossible, starting From a front side region 14 of the cavity 12 by spraying corrosion wax to reach all surfaces.
  • FIG. 3 shows how in the method according to the invention, an applicator 30 is introduced with a nozzle, not shown in the figure with outlet opening 32 end in the cavity 12. Through the outlet opening 32 of the applicator then the protective wax mist 40 is introduced into the cavity 12.
  • the protective wax mist 40 consists of fine wax droplets with a mean diameter of less than 120 microns.
  • the protective wax mist 40 is distributed within the cavity 12 and is deposited on the surfaces of the outer wall 20 and the partition plates 22 down.
  • FIG. 4 shows the cavity with a protective wax layer 50, which has deposited on the walls.
  • a protective wax layer 50 in areas 52 which would not have been reachable directly from the outlet opening 32 by spraying, but only by the tendency of the protective wax mist 40 to homogeneously distribute in the cavity 12 and precipitate on the surfaces.
  • FIG. 5 shows again, similar to the FIG. 3 , the introduction of corrosion protection wax in the cavity.
  • the peculiarity lies in the fact that in the manner illustrated by the arrow 2, the outlet opening 32 is displaced within the cavity.
  • an even more homogeneous distribution of the mist can be effected.
  • the required time can be shortened, which it takes until the mist has been homogeneously distributed. This serves to achieve short cycle times.
  • each pressure channels 70, 72 are connected. These make it possible to specifically create an overpressure or a negative pressure in the areas 14, 16. In this way, in turn, the cloud of mist 40 can be selectively moved back and forth within the cavity 12, as is illustrated by the arrow 4a, 4b. In particular, the complete coverage of the bulkhead plates 22 with corrosion protection wax is thereby promoted.
  • FIG. 7 shows a design in which in addition to the applicator 30 two air nozzles 60 are inserted in the end region of the cavity, said air nozzles each define an exit direction of the air, which is not only in the main extension direction 1 of the cavity 12, but in contrast both clockwise or both against are angled in the clockwise direction. hereby can be a helical twist in the mist 40 generate, which causes a kind of screwing the fog into the cavity and thereby in turn favors the coverage of difficult access surfaces.
  • FIG. 8 shows that similar can also be achieved in that the mist generator itself has two outlet openings 32a, 32b, which are angled in opposite directions in order to produce the desired spin can.
  • the applicator 30 can rotate as a whole.
  • FIG. 9 shows a clear difference.
  • a mist-generating chamber 80 belonging to the plant and not to the workpiece is provided, into which the protective wax mist 40 is produced by means of a mist nozzle 31. From here, the mist is fed through a channel 90 to the actual cavity. This can be done via a pump 92 or, for example, by causing, in addition to the protective wax mist 40 via a separate channel, an overpressure in the mist production chamber 80, which pushes the protective wax mist 40 through the channel 90 into the workpiece.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Nozzles (AREA)

Description

ANWENDUNGSGEBIET UND STAND DER TECHNIKAREA OF APPLICATION AND PRIOR ART

Die Erfindung betrifft ein Verfahren zur Überdeckung von Innenwandungen eines Hohlraums einer Fahrzeugkarosserie (10) oder eines Anbauteils für eine Fahrzeugkarosserie mit einer Schutzschicht aus Korrosionsschutzwachs nach dem Oberbegriff von Anspruch 1.The invention relates to a method for covering inner walls of a cavity of a vehicle body (10) or an attachment for a vehicle body with a protective layer of anti-corrosion wax according to the preamble of claim 1.

Die Erfindung betrifft weiterhin eine Anlage zur Durchführung des Verfahrens nach dem Oberbegriff des Anspruchs 1.The invention further relates to a system for carrying out the method according to the preamble of claim 1.

Gattungsgemäße Verfahren finden im Fahrzeugbau Verwendung, um Hohlräume von Karosserien und deren Anbauteilen wie Klappen, Türen und dergleichen gegen Umwelteinflüsse zu schützen. Typischerweise erfolgt dies dadurch, dass Korrosionsschutzwachs entweder durch Sprühen auf die betreffenden Oberflächen aufgebracht wird oder dass durch Fluten der Hohlräume mit Korrosionsschutzwachs und anschließendes Entfernen überschüssigen Schutzwachses die betreffenden Oberflächen bedeckt werden.Generic methods are used in vehicle construction to protect cavities of bodies and their attachments such as flaps, doors and the like against environmental influences. Typically, this is done by either applying corrosion protection wax to the surfaces concerned by spraying or by flooding the cavities with anticorrosion wax and then removing excess protective wax to cover the surfaces concerned.

Beide Verfahren sind nicht für jeden Einsatzweck ideal. Das Sprühen von Korrosionsschutzwachs erlaubt es bei komplexen Geometrien nicht, ausgehend von einem Austrittpunkt des Schutzwachses alle Oberflächen des Hohlraums zu erreichen. Jenseits von beispielsweise Schottblechen, die der Verstärkung gelten, können Sprühschattenbereiche verbleiben, die nicht erreichbar sind. Auch enge Geometrien wie beispielsweise Zwischenbereiche von doppelwandigen Gestaltungen sind durch Sprühen schwer erreichbar. Das Fluten mit Korrosionsschutzwachs bedarf großer Energie und Schutzwachsmengen und ist durch den Bedarf erschwert, das überschüssige Schutzwachs zu entfernen. Des Weiteren sind Verbesserungen der Taktzeiten bei der Aufbringung von Korrosionsschutzwachs mittels Fluten nur schwer erzielbar.Both methods are not ideal for every purpose. The spraying of corrosion protection wax does not allow complex geometries to reach all surfaces of the cavity starting from a point of exit of the protective wax. Beyond, for example, bulkhead plates that are subject to reinforcement, spray shadow areas may remain which are unreachable. Even narrow geometries such as intermediate areas of double-walled designs are difficult to achieve by spraying. Flooding with corrosion protection wax requires great energy and protective wax amounts and is complicated by the need to remove the excess protective wax. Furthermore, improvements in the cycle times in the application of anti-corrosion wax by means of floods are difficult to achieve.

Aus den Dokumenten DE 102009052089 A1 , FR 3014334 A3 und DE 3006308 A1 sind Einrichtungen zur Beschichtung von Karosseriebauteilen bekannt. Aus der US 3202363 A ist eine Sprühpistole zur Erzeugung eines Sprühnebels bekannt. Aus der US 3488213 A ist eine Anlage zum Beschichten der Innenseite von Fässern mittels Nebel bekannt.From the documents DE 102009052089 A1 . FR 3014334 A3 and DE 3006308 A1 Devices for coating body components are known. From the US 3202363 A For example, a spray gun for generating a spray is known. From the US 3,488,213 A is a plant for coating the inside of barrels by mist known.

AUFGABE UND LÖSUNGTASK AND SOLUTION

Aufgabe der Erfindung ist es, ein technisch unaufwändiges Verfahren und eine hierfür vorgesehene Anlage zur Verfügung stellen, mittels derer bei geringem Schutzwachseinsatz ein zuverlässiges Überdecken von Innenoberflächen eines Hohlraums möglich ist.The object of the invention is to provide a technically uncomplicated method and a system provided for this purpose, by means of which, with a low protective wax insert, a reliable covering of inner surfaces of a cavity is possible.

Erfindungsgemäß ist das folgende Verfahren vorgesehen: Korrosionsschutzwachs wird mittels eines Nebelerzeugers in vernebelte Form (Schutzwachsnebel) gebracht und durch eine Austrittsöffnung dem zu konservierende Hohlraum zugeführt.According to the invention, the following method is provided: Corrosion protection wax is brought into a misted form (protective wax mist) by means of a mist generator and fed through an outlet opening to the cavity to be preserved.

Dabei erzeugt der Nebelerzeuger den Schutzwachsnebel durch Vermengung von druckbeaufschlagtem Schutzwachs sowie druckbeaufschlagter Luft. Die Tröpfchen des Schutzwachsnebels treten aus der Austrittsöffnung mit einer Geschwindigkeit < 10 m/sec aus.The mist generator generates the protective wax mist by mixing pressurized protective wax and pressurized air. The droplets of the protective wax mist emerge from the outlet opening at a speed <10 m / sec.

Der Schutzwachsnebel schlägt sich an Innenwandungen des Hohlraums nieder und bildet hier eine Korrosionsschutzwachsschicht.The protective wax mist is deposited on the inner walls of the cavity and forms here a corrosion protection wax layer.

Erfindungsgemäß ist demnach vorgesehen, dass innerhalb des Hohlraums eine Nebelatmosphäre aus Schutzwachs und Gas erzeugt wird oder eine solche Nebelatmosphäre dem Hohlraum zugeführt wird. Diese besteht aus Gas, insbesondere aus Luft, sowie feinsten Tröpfchen des Korrosionsschutzwachses. Diese sind ausreichend klein zerstäubt, um in der umgebenden Luft schwebefähig zu sein. Die mittlere Tröpfchengröße der Tröpfchen des Korrosionsschutzwachses im Nebel beträgt zu diesem Zweck vorzugsweise < 120 µm, insbesondere vorzugsweise < 80 µm oder gar < 60µm im Mittel. Die Erzeugung eines solchen Schutzwachsnebels erfolgt mittels eines geeigneten Nebelerzeugers.According to the invention, it is therefore provided that within the cavity a mist atmosphere of protective wax and gas is generated or such a mist atmosphere is supplied to the cavity. This consists of gas, especially air, as well as the finest droplets of corrosion protection wax. These are sufficiently small atomized to be hoverable in the surrounding air. The mean droplet size of the droplets of the corrosion protection wax in the mist is preferably <120 .mu.m, in particular preferably <80 .mu.m or even <60 .mu.m, on average for this purpose. The production of such a protective wax mist takes place by means of a suitable mist generator.

Die Nebelatmosphäre des Schutzwachsnebels, die erfindungsgemäß zum Zwecke der Oberflächenbeschichtung in den Hohlraum eingebracht wird, schlägt sich anders als beim Sprühen des Korrosionsschutzwachses nicht unmittelbar an den Wandungen des Hohlraums nieder, sondern verteilt sich im Hohlraum und schlägt sich auch an Oberflächen nieder, die ausgehend von der Austrittsöffnung durch Sprühen nicht unmittelbar zugänglich wären.The fog atmosphere of the protective wax mist, which is introduced according to the invention for the purpose of surface coating in the cavity, unlike spraying the anti-corrosion wax does not directly on the walls of the cavity down, but spreads in the cavity and is also reflected in surfaces starting from the exit opening would not be directly accessible by spraying.

Durch gezielte Erwärmung oder Abkühlung der Wandungen des Hohlraums kann die Art des Niederschlags des Schutzwachses und die Schichtbildung beeinflusst werden. Weiterhin ist es auch möglich, durch elektrostatische Aufladung des Wachses vor oder während des Austrags und/oder Ladung der Wandungen den Niederschlag zu beeinflussen.By deliberately heating or cooling the walls of the cavity, the type of precipitation of the protective wax and the layer formation can be influenced. Furthermore, it is also possible by electrostatic charging of the wax before or during the discharge and / or charge of the walls to influence the precipitation.

Je nach Art des Schutzwachses kann die Verfestigung durch eine erhöhte Temperatur und eine verminderte Temperatur des Schutzwachses bewirkt werden. Je nach verwendetem Schutzwachs ist auch eine chemische Trocknung, Strahlungstrocknung oderTrocknung per Luftstrom möglich.Depending on the nature of the protective wax, the solidification can be effected by an elevated temperature and a reduced temperature of the protective wax. Depending on the protective wax used, chemical drying, radiation drying or drying by air flow is also possible.

Der Schutzwachsnebel kann bei Abschluss des Verfahrens im Hohlraum verbleiben oder aus diesem abgesaugt werden.The protective wax mist can remain in the cavity at the completion of the process or be sucked out of it.

Als zu verwendendes Korrosionsschutzwachs kommen die zur Hohlraumkonservierung bei Fahrzeugen bereits heute üblicherweise zum Sprühen oder Fluten verwendeten Wachssorten in Frage. Rein exemplarisch sei das Korrosionsschutzwachs mit dem Markennamen Eftec Efcoat WH 320 A1 genannt, welches hier Verwendung finden kann.As corrosion protection wax to be used for cavity preservation in vehicles already commonly used for spraying or flooding waxes come into question. By way of example, the corrosion protection wax with the brand name Eftec Efcoat WH 320 A1 called, which can be used here.

Die Tröpfchen des Schutzwachsnebels können aus der Austrittsöffnung mit einer Geschwindigkeit < 5 m/sec aus, vorzugsweise < 2 m/sec, insbesondere vorzugsweise < 0,5 m/sec austreten.The droplets of the protective wax mist can exit from the outlet opening at a speed <5 m / sec, preferably <2 m / sec, in particular preferably <0.5 m / sec.

Durch den vergleichsweise langsamen Austritt des Schutzwachsnebels aus der Austrittsöffnung wird die Bildung einer Nebelatmosphäre begünstigt. Zu hohe Geschwindigkeiten können dazu führen, dass trotz geringer Tröpfchengröße ein zu großer Anteil der Tröpfchen unmittelbar an einer ebenen Wandung des Hohlraums aufschlägt und somit zur Bildung einer Nebelatmosphäre nicht mehr beitragen kann.Due to the comparatively slow exit of the protective wax mist from the outlet opening, the formation of a mist atmosphere is favored. Too high speeds can cause that, despite the small droplet size too large a proportion of the droplets hits directly on a flat wall of the cavity and thus can no longer contribute to the formation of a mist atmosphere.

Allerdings kann es zweckmäßig sein, die sich ausbildende Nebelatmosphäre gezielt in Bewegung zu versetzen. Dies kann durch die Geschwindigkeit und Austrittsrichtung des austretenden Schutzwachsnebels gesteuert werden. Auch die Steuerung dieser Bewegung durch anderweitig zugeführte Energie ist möglich.However, it may be expedient to set the developing fog atmosphere in a targeted manner in motion. This can be controlled by the speed and exit direction of the exiting protective wax mist. The control of this movement by otherwise supplied energy is possible.

Die Zuführung des Schutzwachsnebels kann an mehreren Stellen oder an wechselnden Stellen innerhalb des zu konservierenden Hohlraums erfolgen. Die Zuführung des Schutzwachsnebels kann auch mittels mehrerer Nebelerzeuger erfolgen, die an unterschiedlichen Stellen innerhalb des zu konservierenden Hohlraums angeordnet sind und/oder in unterschiedliche Richtungen relativ zum zu konservierenden Hohlraum angeordnet sind.The supply of the protective wax mist can take place at several points or at changing points within the cavity to be preserved. The supply of the protective wax mist can also be effected by means of several mist generators, which are arranged at different locations within the cavity to be preserved and / or are arranged in different directions relative to the cavity to be preserved.

Auch wenn grundsätzlich die Einbringung des Schutzwachsnebels an nur einer Stelle des Hohlraums ausreichen kann, da sich der Schutzwachsnebel im Hohlraum verteilt, kann eine besonders gute und schnelle Verteilung des Nebels durch die genannten zusätzlichen Maßnahmen begünstigt werden. Durch mehrere Austrittsöffnungen, die beispielsweise an gegenüberliegenden Enden eines länglichen Hohlraums angeordnet sind, lässt sich ausgehend von beiden Enden die Nebelatmosphäre schaffen. Durch eine innerhalb des Hohlraums bewegliche Austrittsöffnung, die an verschiedenen Stellen austrägt, kann mit nur einer Austrittsöffnung eine recht homogene Nebelatmosphäre geschaffen werden. Durch mehrere Austrittsöffnungen, die in unterschiedliche Richtungen weisen, kann, insbesondere im Zusammenspiel mit einer gemeinsamen Bewegung dieser Austrittsöffnungen durch den Hohlraum hindurch, besonders gut gewährleistet werden, dass die Nebelatmosphäre auch schwer zugängliche Oberflächenbereiche erreicht.Although in principle the introduction of the protective wax mist at only one point of the cavity may be sufficient, since the protective wax mist is distributed in the cavity, a particularly good and rapid distribution of the mist can be promoted by said additional measures. Through several outlet openings, which are arranged for example at opposite ends of an elongated cavity, the mist atmosphere can be created from both ends. By a movable within the cavity outlet opening, which discharges at different locations, with only one outlet opening a fairly homogeneous fog atmosphere can be created. By means of a plurality of outlet openings, which point in different directions, it is particularly well ensured, in particular in conjunction with a common movement of these outlet openings through the cavity, that the mist atmosphere also reaches hard-to-reach surface areas.

Durch Erzeugung einer Druckdifferenz zwischen zwei beanstandeten Teilbereichen des Hohlraums kann der Schutzwachsnebel innerhalb des Hohlraums bewegt werden. Dabei kann durch alternierende Erzeugung eines Überdrucks und eines Unterdrucks in mindestens einem Teilbereich des Hohlraums eine periodisch wiederholte Bewegung des Schutznebels im Hohlraum erzeugt werden.By generating a pressure difference between two offending portions of the cavity, the protective wax mist can be moved within the cavity. In this case, by alternately generating an overpressure and a negative pressure in at least a partial area of the cavity, a periodically repeated movement of the protective mist in the cavity can be produced.

Zwar verteilt sich der Schutzwachsnebel grundsätzlich eigenständig im Hohlraum weitgehend homogen. Da jedoch je nach Anwendungszweck kurze Taktzeiten gewünscht sind, kann es insbesondere von Vorteil sein, den Schutzwachsnebel durch einen lokalen Überdruck oder Unterdruck im Hohlraum gezielt zu bewegen. Dies kann beispielsweise durch das Einbringen oder Absaugen von Luft an einer Öffnung des Hohlraums erfolgen, sei es durch eine von der Austrittsöffnung separate Drucköffnung der Anlage zur Hohlraumkonservierung oder durch die Austrittsöffnung selbst. Durch periodisch wiederholte Druckerhöhungen oder -senkungen kann auch eine zyklische Bewegung des Schutzwachsnebels im Hohlraum erzeugt werden, durch die ein besonders günstiges Niederschlagsverhalten des Schutzwachses auf der Oberfläche erzielt wird.Although the protective wax mist is distributed basically independently in the cavity largely homogeneous. However, since short cycle times are desired depending on the application, it may be particularly advantageous to selectively move the protective wax mist through a local overpressure or negative pressure in the cavity. This can be done, for example, by the introduction or suction of air at an opening of the cavity, either by a separate from the outlet pressure opening of the cavity preservation system or through the outlet opening itself. By periodically repeated increases or decreases pressure can also cyclic movement of the protective wax mist be generated in the cavity through which a particularly favorable precipitation behavior of the protective wax is achieved on the surface.

Ein typisches Werkstück, welches mit den erfindungsgemäßen Verfahren vor Korrosion geschützt wird, ist der Teilbereich eine Karosserie mit einem länglichen Hohlraum. In einem solchen Falle ist es möglich, den Schutznebel durch die Austrittsöffnung fluchtend zur Haupterstreckungsrichtung des Hohlraums austreten zu lassen.A typical workpiece, which is protected against corrosion by the methods according to the invention, is the partial area of a body with an elongate cavity. In such a case, it is possible to allow the protective mist to escape through the outlet opening in alignment with the main extension direction of the cavity.

Der Schutznebel kann jedoch auch in einer Richtung aus der Austrittsöffnung austreten, die gegenüber der Haupterstreckungsrichtung eines solchen Hohlraums angewinkelt ist.However, the protective mist can also escape in a direction out of the outlet opening, which is angled relative to the main extension direction of such a cavity.

Durch eine angewinkelte Austrittsrichtung durch die Austrittsöffnung hindurch kann erreicht werden, dass der Schutznebel sich innerhalb des vorzugsweise länglichen Hohlraums schraubenförmig bewegt, was den Niederschlag an allen Oberflächen begünstigt.By an angled discharge direction through the outlet opening can be achieved that the protective mist moves helically within the preferably elongated cavity, which favors the precipitation on all surfaces.

Ein ähnlicher Effekt ist erzielbar, indem eine nach Austritt des Nebels durch die Austrittsöffnung stattfindende Beeinflussung vorgesehen ist. Der Schutzwachsnebel kann nach Austritts aus der Austrittsöffnung in Hinblick auf seine Bewegungsrichtung gezielt beeinflusst werden, insbesondere durch Luftzufuhr aus von der Austrittsöffnung unterschiedliche Luftdüsen. Durch deren gegeneinander angewinkelte Ausrichtung sind diese Luftdüsen ebenfalls in der Lage sind, eine solche schraubenförmige Bewegung der Nebelatmosphäre zu bewirken.A similar effect can be achieved by providing an influence after exiting the mist through the outlet opening. The protective wax mist can be selectively influenced after leaving the outlet opening with regard to its direction of movement, in particular by supplying air from different air nozzles from the outlet opening. By their mutually angled orientation these air nozzles are also able to effect such a helical movement of the mist atmosphere.

Es sind jedoch auch andere Techniken möglich, um die Bewegung des Nebels innerhalb des Hohlraums gezielt zu beeinflussen. Hierzu gehören beispielsweise der Magnetismus und die Elektrostatik als nutzbare Wirkprinzipien.However, other techniques are also possible to specifically influence the movement of the mist within the cavity. These include, for example, magnetism and electrostatics as useful principles of action.

Zur Erzeugung des Nebels können vielfältige aus dem Stand der Technik bereits bekannte Techniken Verwendung finden. Aus anderen Bereichen des Standes der Technik sind Nebeldüsen bereits bekannt.To generate the mist, various techniques already known from the prior art can be used. Fog nozzles are already known from other areas of the prior art.

Erfindungsgemäß findet eine Vermengung von Schutzwachs und Luft, die jeweils druckbeaufschlagt sind, vor Austritt des Schutzwachsnebels statt. Die druckbeaufschlagte Luft zerreißt das flüssig zugeführte Schutzwachs und erzeugt hierdurch den Nebel.According to the invention, a mixture of protective wax and air, which are each pressurized, takes place before the protective wax mist emerges. The pressurized air ruptures the liquid supplied protective wax and thereby generates the mist.

Für alle Formen von Nebelerzeugern und Austrittsöffnungen kann zusätzlich vorgesehen sein, dass diese eine drehbare Komponente aufweisen, so dass die Austrittsöffnungen sich während des Austritts des Schutzwachses in einer rotativen Bewegung befindet, was der homogenen Verteilung des Schutzwachses dient.For all forms of mist generators and outlet openings may additionally be provided that they have a rotatable component, so that the outlet openings is during the exit of the protective wax in a rotational movement, which serves the homogeneous distribution of the protective wax.

Der Austrittöffnung kann eine Nebelerzeugungskammer vorgeschaltet sein. Der Nebelerzeuger kann zur Erzeugung des Schutzwachsnebels in der Nebelerzeugungskammer ausgebildet sein. Es kann Fördereinrichtung zur Förderung des Schutzwachsnebels zur Austrittöffnung vorgesehen sein.The outlet opening may be connected upstream of a mist production chamber. The mist generator may be configured to generate the protective wax mist in the mist production chamber. It may be provided for conveying the protective wax mist to the outlet conveyor.

Die vorgeschaltete Nebelerzeugungskammer dient der Erzeugung eines homogenen Nebels bereits vor Einbringung in den zu konservierenden Hohlraum. Durch eine Fördereinrichtung wie einer Pumpe zur Förderung des Schutzwachsnebels oder zur Erzeugung eines Überdrucks in der Nebelerzeugungskammer wird dieser Nebel in der homogenisierten Form dem Hohlraum zugeführt.The upstream mist production chamber serves to generate a homogeneous mist even before introduction into the cavity to be preserved. By a conveyor such as a pump to promote the protective wax mist or to generate an overpressure in the mist production chamber, this mist is supplied in the homogenized form of the cavity.

Das Verfahren kann Anwendung finden zur Zuführung des Schutzwachsnebels in einen Hohlraum zwischen Wandungen eines doppelwandigen Hohlkörpers. Es kann weiterhin Anwendung finden zur Zuführung des Schutzwachsnebels in einen Hohlraum, dessen Innenwandungen ausgehend von der Positionierung der Austrittöffnung innerhalb des Hohlraums zumindest abschnittsweise durch andere Wandungsabschnitte verdeckt sind. Auch Oberflächen gebogener oder abgewinkelter Hohlräume sind mittels des beschriebenen Verfahrens vorteilhaft mit Schutzwachs zu versehen. Insbesondere bei solchen Gestaltungen lassen sich durch den Schutzwachsnebel bessere Ergebnisse als durch Versprühen des Schutzwachses erzielen.The method may find application for supplying the protective wax mist into a cavity between walls of a double-walled hollow body. It can also find application for supplying the protective wax mist in a cavity whose inner walls are covered at least in sections by other wall sections, starting from the positioning of the outlet opening within the cavity. Even surfaces of curved or angled cavities are to be provided by means of the described method advantageously with protective wax. In particular, in such designs can be achieved by the protective wax mist better results than by spraying the protective wax.

Erfindungsgemäß ist die folgende Anlage zur Durchführung des beschriebenen Verfahrens vorgesehen: Die Anlage weist eine Arbeitsposition auf, an der ein Werkstück mit einem zu konservierenden Hohlraum positionierbar ist. Sie weist eine Zuführvorrichtung zur Zuführung eines Korrosionsschutzwachses in den Hohlraum auf. Die Zuführvorrichtung verfügt über einen Nebelerzeuger mit Austrittöffnung, die derart an oder in dem zu konservierenden Hohlraum positionierbar ist, dass das Korrosionsschutzwachs in vernebelter Form (Schutzwachsnebel) in den Hohlraum eingebracht werden kann.According to the invention, the following system is provided for carrying out the method described: The system has a working position at which a workpiece with a cavity to be preserved can be positioned. It has a supply device for supplying a corrosion protection wax in the cavity. The supply device has a mist generator with outlet opening which can be positioned on or in the cavity to be preserved in such a way that the corrosion protection wax can be introduced into the cavity in atomised form (protective wax mist).

Die Anlage verfügt über Luftdüsen zur Einbringung von Luft zum Zwecke der Bewegung des erzeugten Schutzwachsnebels innerhalb des Hohlraums.The plant has air nozzles for introducing air for the purpose of moving the generated protective wax mist inside the cavity.

Die Anlage kann mindestens einen Druckerzeuger aufweisen, mittels dessen in einem Teilbereich des Hohlraums ein Unterdruck oder ein Überdruck erzeugbar ist. Der Druckerzeuger kann mit einer Steuereinrichtung versehen sein, durch die periodisch wechselnder Druck innerhalb des Hohlraums erzeugbar ist.The system may have at least one pressure generator, by means of which in a partial region of the cavity a negative pressure or an overpressure can be generated. The pressure generator may be provided with a control device, is generated by the periodically changing pressure within the cavity.

Weiterhin kann die Anlage weitere zum beschriebenen Verfahren sowie im Zusammenhang mit den Ausführungsbeispielen genannten Komponenten aufweisen.Furthermore, the system may have further to the described method as well as in connection with the embodiments mentioned components.

KURZBESCHREIBUNG DER ZEICHNUNGENBRIEF DESCRIPTION OF THE DRAWINGS

Weitere Vorteile und Aspekte der Erfindung ergeben sich aus den Ansprüchen und aus der nachfolgenden Beschreibung von bevorzugten Ausführungsbeispielen der Erfindung, die nachfolgend anhand der Figuren erläutert sind.

  • Fig. 1 und 2 zeigen ein exemplarisches Werkstück mit einem Hohlraum, dessen Oberflächen mit Korrosionsschutzwachs zu versehen sind.
  • Fig. 3 zeigt die Einbringung von vernebeltem Korrosionsschutzwachs in den Hohlraum durch eine Austrittsöffnung hindurch an einer endseitigen Stirnseite des Werkstücks. Fig. 4 zeigt den Hohlraum, nachdem sich das Korrosionsschutzwachs an den Wandungen niedergeschlagen hat.
  • Fig. 5 zeigt eine Variante, bei der durch Bewegung der Austrittöffnung der Nebelaustrag verbessert ist.
  • Fig. 6a und 6b zeigt eine Variante, bei der durch gezielte Erzeugung von Überdruck und/oder Unterdruck im Hohlkörper eine Bewegung des Schutzwachsnebels erzielt wird.
  • Fig. 7 und 8 zeigen Varianten, bei denen durch Zuführung von Luft oder durch besondere Ausrichtung von Nebelaustrittsöffnungen ein Drall im Schutzwachsnebel erzeugt wird.
  • Fig. 9 zeigt eine Variante, bei der die Nebelerzeugung in einer nicht zum Werkstück gehörigen Nebelerzeugungskammer erfolgt und der erzeugt Nebel erst anschließend dem Hohlraum des Werkstücks zugeführt wird.
Further advantages and aspects of the invention will become apparent from the claims and from the following description of preferred embodiments of the invention, which are explained below with reference to the figures.
  • Fig. 1 and 2 show an exemplary workpiece with a cavity whose surfaces are to be provided with anti-corrosion wax.
  • Fig. 3 shows the introduction of nebulized corrosion protection wax into the cavity through an outlet opening at an end face of the workpiece. Fig. 4 shows the cavity after the anti-corrosion wax has deposited on the walls.
  • Fig. 5 shows a variant in which the mist discharge is improved by movement of the outlet opening.
  • Fig. 6a and 6b shows a variant in which a movement of the protective wax mist is achieved by targeted generation of pressure and / or negative pressure in the hollow body.
  • FIGS. 7 and 8 show variants in which a twist in the protective wax mist is generated by supplying air or by special alignment of mist outlet openings.
  • Fig. 9 shows a variant in which the mist generation takes place in a not belonging to the workpiece mist production chamber and the generated mist is only then supplied to the cavity of the workpiece.

DETAILLIERTE BESCHREIBUNG DER AUSFÜHRUNGSBEISPIELEDETAILED DESCRIPTION OF THE EMBODIMENTS

Die Figuren 1 und 2 zeigen ein exemplarisches Werkstück 10, bei dem es sich beispielsweise um einen Teilabschnitt eines Schwellers eines Kraftfahrzeuges handeln kann. Dabei stellt Figur 1 eine geschnitten und Figur 2 eine perspektivische, geschnittene Darstellung dar. Wie zu ersehen ist, ist ein Hohlraum 12 dieses Schwellers nicht nur durch eine zylindrische Außenwandung 20, sondern auch durch Schottbleche 22 begrenzt.The Figures 1 and 2 show an exemplary workpiece 10, which may be, for example, a portion of a sill of a motor vehicle. It puts FIG. 1 a cut and FIG. 2 a perspective, sectional view. As can be seen, a cavity 12 of this sill is limited not only by a cylindrical outer wall 20, but also by partition plates 22.

Ziel des hier beschriebenen Verfahrens ist es, die Oberflächen innerhalb des Hohlraums mit Korrosionsschutzwachs zu überdecken. Die genannten Schottbleche 22 machen es jedoch unmöglich, ausgehend von einem Stirnseitenbereich 14 des Hohlraums 12 durch Versprühen von Korrosionswachs sämtliche Oberflächen zu erreichen.The aim of the method described here is to cover the surfaces within the cavity with corrosion protection wax. The mentioned bulkhead plates 22, however, make it impossible, starting From a front side region 14 of the cavity 12 by spraying corrosion wax to reach all surfaces.

Figur 3 zeigt, wie bei dem erfindungsgemäßen Verfahren ein Applikator 30 mit einer in der Figur nicht dargestellten Nebeldüse mit Austrittsöffnung 32 endseitig in den Hohlraum 12 eingeführt wird. Durch die Austrittsöffnung 32 des Applikators hindurch wird dann der Schutzwachsnebel 40 in den Hohlraum 12 eingebracht. Der Schutzwachsnebel 40 besteht aus feinen Wachströpfchen mit einem mittleren Durchmesser von unter 120 µm. Der Schutzwachsnebel 40 verteilt sich innerhalb des Hohlraums 12 und schlägt sich an den Oberflächen der Außenwandung 20 und der Schottbleche 22 nieder. FIG. 3 shows how in the method according to the invention, an applicator 30 is introduced with a nozzle, not shown in the figure with outlet opening 32 end in the cavity 12. Through the outlet opening 32 of the applicator then the protective wax mist 40 is introduced into the cavity 12. The protective wax mist 40 consists of fine wax droplets with a mean diameter of less than 120 microns. The protective wax mist 40 is distributed within the cavity 12 and is deposited on the surfaces of the outer wall 20 and the partition plates 22 down.

Figur 4 zeigt den Hohlraum mit einer Schutzwachsschicht 50, die sich an den Wandungen niedergeschlagen hat. Insbesondere besteht auch eine Schutzwachsschicht 50 in Bereichen 52, die unmittelbar von der Austrittsöffnung 32 aus durch Sprühen nicht erreichbar gewesen wären, sondern nur durch die Neigung des Schutzwachsnebels 40, sich homogen im Hohlraum 12 zu verteilen und sich an den Oberflächen niederzuschlagen. FIG. 4 shows the cavity with a protective wax layer 50, which has deposited on the walls. In particular, there is also a protective wax layer 50 in areas 52 which would not have been reachable directly from the outlet opening 32 by spraying, but only by the tendency of the protective wax mist 40 to homogeneously distribute in the cavity 12 and precipitate on the surfaces.

Figur 5 zeigt nochmals, ähnlich der Figur 3, die Einbringung des Korrosionsschutzwachses in den Hohlraum. Die Besonderheit liegt hier darin, dass in der durch den Pfeil 2 verdeutlichten Weise die Austrittsöffnung 32 innerhalb des Hohlraums verlagert wird. Hierdurch kann eine noch homogenere Verteilung des Nebels bewirkt werden. Je nach Eindringtiefe des Applikators 30 in den Hohlraum kann auch die erforderliche Zeit verkürzt werden, die es braucht, bis sich der Nebel homogen verteilt hat. Dies dient der Erzielung kurzer Taktzeiten. FIG. 5 shows again, similar to the FIG. 3 , the introduction of corrosion protection wax in the cavity. The peculiarity lies in the fact that in the manner illustrated by the arrow 2, the outlet opening 32 is displaced within the cavity. As a result, an even more homogeneous distribution of the mist can be effected. Depending on the depth of penetration of the applicator 30 into the cavity, the required time can be shortened, which it takes until the mist has been homogeneously distributed. This serves to achieve short cycle times.

Bei der Gestaltung gemäß Figur 6 ist vorgesehen, dass an den beiden gegenüberliegenden Endbereichen 14, 16 des Hohlraums 12 jeweils Druckkanäle 70, 72 angeschlossen sind. Diese gestatten es, gezielt in den Bereichen 14, 16 einen Überdruck bzw. einen Unterdruck entstehen zu lassen. Hierdurch wiederum kann die Nebelwolke 40 gezielt innerhalb des Hohlraums 12 hin und her bewegt werden, wie durch die Pfeil 4a, 4b verdeutlicht wird. Insbesondere die vollständige Überdeckung der Schottbleche 22 mit Korrosionsschutzwachs wird hierdurch begünstigt.In the design according to FIG. 6 it is provided that at the two opposite end portions 14, 16 of the cavity 12 each pressure channels 70, 72 are connected. These make it possible to specifically create an overpressure or a negative pressure in the areas 14, 16. In this way, in turn, the cloud of mist 40 can be selectively moved back and forth within the cavity 12, as is illustrated by the arrow 4a, 4b. In particular, the complete coverage of the bulkhead plates 22 with corrosion protection wax is thereby promoted.

Figur 7 zeigt eine Gestaltung, bei der zusätzlich zum Applikator 30 zwei Luftdüsen 60 im Endbereich des Hohlraums eingeführt werden, wobei diese Luftdüsen jeweils eine Austrittsrichtung der Luft definieren, die nicht einzig in Haupterstreckungsrichtung 1 des Hohlraums 12 verläuft, sondern jeweils demgegenüber beide im Uhrzeigersinn oder beide gegen den Uhrzeigersinn angewinkelt sind. Hierdurch lässt sich ein schraubenförmiger Drall im Nebel 40 erzeugen, welcher gleichsam eine Art Einschrauben des Nebels in den Hohlraum bewirkt und hierdurch wiederum die Überdeckung auch schwierig zugänglicher Flächen begünstigt. FIG. 7 shows a design in which in addition to the applicator 30 two air nozzles 60 are inserted in the end region of the cavity, said air nozzles each define an exit direction of the air, which is not only in the main extension direction 1 of the cavity 12, but in contrast both clockwise or both against are angled in the clockwise direction. hereby can be a helical twist in the mist 40 generate, which causes a kind of screwing the fog into the cavity and thereby in turn favors the coverage of difficult access surfaces.

Figur 8 zeigt, dass ähnliches auch dadurch erreicht werden kann, dass der Nebelerzeuger selbst zwei Austrittsöffnungen 32a, 32b aufweist, die gegenläufig angewinkelt sind, um den gewünschten Drall erzeugen zu können. Zusätzlich kann der Applikator 30 als Ganzes rotieren. FIG. 8 shows that similar can also be achieved in that the mist generator itself has two outlet openings 32a, 32b, which are angled in opposite directions in order to produce the desired spin can. In addition, the applicator 30 can rotate as a whole.

Die Ausgestaltung gemäß Figur 9 weist einen deutlichen Unterschied auf. Hier ist eine zur Anlage und nicht zum Werkstück gehörende Nebelerzeugungskammer 80 vorgesehen, in die durch eine Nebeldüse 31 der Schutzwachsnebel 40 erzeugt wird. Von hier aus wird durch einen Kanal 90 der Nebel dem eigentlichen Hohlraum zugeführt. Dies kann über eine Pumpe 92 erfolgen oder beispielsweise, indem zusätzlich zum Schutzwachsnebel 40 über einen separaten Kanal ein Überdruck in der Nebelerzeugungskammer 80 verursacht wird, der den Schutzwachsnebel 40 durch den Kanal 90 in das Werkstück hineindrückt.The embodiment according to FIG. 9 shows a clear difference. Here, a mist-generating chamber 80 belonging to the plant and not to the workpiece is provided, into which the protective wax mist 40 is produced by means of a mist nozzle 31. From here, the mist is fed through a channel 90 to the actual cavity. This can be done via a pump 92 or, for example, by causing, in addition to the protective wax mist 40 via a separate channel, an overpressure in the mist production chamber 80, which pushes the protective wax mist 40 through the channel 90 into the workpiece.

Claims (13)

  1. Method for covering inner walls of a cavity of a vehicle body (10) or of an add-on part for a vehicle body, with a protective layer (50) made of anti-corrosion wax, characterized by the following features:
    a. anti-corrosion wax is brought by means of a mist generator (31) into an atomized form as a protective agent mist (40) and is supplied through an outlet opening (32) to the cavity (12) to be preserved, wherein the mist generator generates the protective wax mist by mixing pressurized protective wax and pressurized air and the droplets of the protective wax mist (40) emerge from the outlet opening (32) at a speed of < 10 m/sec, and
    b. the protective wax mist (40) is deposited on inner walls of the cavity (12) and forms an anti-corrosion wax layer (50) here.
  2. Method according to Claim 1 with the additional features:
    a.the protective wax mist (40) consists of air and droplets of the anti-corrosion wax, and
    b. the average diameter of the droplets of the supplied mist is < 100 µm, preferably < 80 µm, particulary preferably < 60 µm.
  3. Method according to Claim 1 or 2 with the additional feature:
    a. the droplets of the protective wax mist (40) emerge from the outlet opening (32) at a speed of < 5 m/sec, particularly preferably < 1 m/sec.
  4. Method according to one of the preceding claims with at least one of the additional features:
    a. the protective wax mist (40) is supplied at a plurality of points or at alternating points within the cavity (12) to be preserved, and/or
    b. the protective wax mist (40) is supplied by means of a plurality of mist generators and/or through a plurality of outlet openings (32a, 32b) which are arranged at different points within the cavity (12) to be preserved and/or are arranged in different directions relative to the cavity (12) to be preserved.
  5. Method according to one of the preceding claims with the additional feature:
    a. by generation of a pressure difference between two spaced-apart partial regions (14, 16) of the cavity (12), the protective wax mist (40) is moved within the cavity (12),
    in particular with the following feature:
    a. by alternating generation of a positive pressure and a negative pressure in at least one partial region (14, 16) of the cavity, a periodically repeated movement of the protective wax mist (40) is generated in the cavity (12).
  6. Method according to one of the preceding claims with the additional feature:
    a. the outlet opening (32) through which the protective wax mist (40) is introduced into the cavity (12) is in a rotational movement at least in phases.
  7. Method according to one of the preceding claims with the additional features:
    a. the mist generation takes place through at least one nozzle opening (34) with a diameter of less than 0.5 mm, preferably less than 0.3 mm, and
    b. the anti-corrosion wax is supplied to the nozzle opening (34) at a pressure of at least 20 bar, preferably at least 60 bar, particularly preferably at least 100 bar.
  8. Method according to one of the preceding claims with the additional feature:
    a. the protective wax mist (40) emerges from the outlet opening (32) in a direction which is angled in relation to a main direction of extent (1) of the cavity (12).
  9. Method according to one of the preceding claims with the additional feature:
    b. after emerging from the outlet opening, the protective wax mist (40) is influenced in a targeted manner in respect of its movement direction by a supply of air from air nozzles (60) different from the outlet opening.
  10. Method according to one of the preceding claims with the additional features:
    a. a mist generation chamber (80) is connected upstream of the outlet opening (32), and
    b. the mist generator (31) is designed for generating the protective wax mist (40) in the mist generation chamber (80),
    in particular with the additional feature:
    c. a conveying device (90) is provided for conveying the protective wax mist (40) into the cavity (12) .
  11. Method according to one of the preceding claims with one of the additional features:
    a. wax mist is used for supplying the protective agent wax (40) into a cavity (12) between walls of a double-walled hollow body, or
    b. wax mist is used for supplying the protective agent wax (40) into a cavity (12), the inner walls of which are concealed, starting from the positioning of the outlet opening (32) within the cavity (12), at least in sections by other wall sections (22).
  12. System for cavity preservation of cavities of vehicle bodies with the following features:
    a. the system has a working position at which a vehicle body (10) having a cavity (12) to be preserved can be positioned, and
    b. the system has an applicator (30) for supplying an anti-corrosion wax (40) into the cavity (12), and
    c. the applicator (30) has a mist generator (31) with an outlet opening (32) which can be positioned at or in the cavity (12) to be preserved or at or in a supply to the cavity (12) in such a manner that the anti-corrosion wax agent can be introduced in atomized form as a protective mist (40) into the cavity (12).
    characterized by the following feature:
    d. the system has air nozzles (60) for the introduction of air for the purpose of moving the generated protective wax mist (40) within the cavity (12), and
    e. the system is designed for carrying out the method according to one of the preceding Claims 9 to 11.
  13. System according to Claim 12 with the additional feature:
    a. the system has at least one pressure generator by means of which a negative pressure or a positive pressure can be generated in a partial region (14, 16) of the cavity (12),
    preferably with the additional feature:
    b. the pressure generator is provided with a control device by means of which periodically changing pressure can be generated within the cavity (12).
EP16154796.3A 2016-02-09 2016-02-09 Method and installation for covering internal walls of a cavity with a protective layer made of corrosion protecting wax Active EP3205407B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP16154796.3A EP3205407B1 (en) 2016-02-09 2016-02-09 Method and installation for covering internal walls of a cavity with a protective layer made of corrosion protecting wax
US16/070,447 US10870124B2 (en) 2016-02-09 2017-02-09 Method and system for covering inner walls of a cavity with a protective layer made of anti-corrosion wax or anti-corrosion agent
EP17703199.4A EP3414020B1 (en) 2016-02-09 2017-02-09 Method for covering internal walls of a cavity with a protective layer made of corrosion protecting wax or other wax based corrosion protecting material
PCT/EP2017/052932 WO2017137520A1 (en) 2016-02-09 2017-02-09 Method and system for covering inner walls of a cavity with a protective layer made of anti-corrosion wax or anti-corrosion agent
CN201780010667.1A CN108698066B (en) 2016-02-09 2017-02-09 Method and system for covering the inner wall of a cavity with a protective layer made of a corrosion-inhibiting wax or a corrosion inhibitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16154796.3A EP3205407B1 (en) 2016-02-09 2016-02-09 Method and installation for covering internal walls of a cavity with a protective layer made of corrosion protecting wax

Publications (2)

Publication Number Publication Date
EP3205407A1 EP3205407A1 (en) 2017-08-16
EP3205407B1 true EP3205407B1 (en) 2019-09-25

Family

ID=55411176

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16154796.3A Active EP3205407B1 (en) 2016-02-09 2016-02-09 Method and installation for covering internal walls of a cavity with a protective layer made of corrosion protecting wax
EP17703199.4A Active EP3414020B1 (en) 2016-02-09 2017-02-09 Method for covering internal walls of a cavity with a protective layer made of corrosion protecting wax or other wax based corrosion protecting material

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP17703199.4A Active EP3414020B1 (en) 2016-02-09 2017-02-09 Method for covering internal walls of a cavity with a protective layer made of corrosion protecting wax or other wax based corrosion protecting material

Country Status (4)

Country Link
US (1) US10870124B2 (en)
EP (2) EP3205407B1 (en)
CN (1) CN108698066B (en)
WO (1) WO2017137520A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3670001B1 (en) * 2018-12-18 2021-07-28 IPR-Intelligente Peripherien für Roboter GmbH Method for cavity preservation, mixing nozzle unit and cavity preservation device with such a mixing nozzle unit
DE102020127076A1 (en) * 2020-01-20 2021-07-22 Jens-Werner Kipp Process for thin coating of internal surfaces of through holes

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3202363A (en) * 1963-07-01 1965-08-24 Aro Corp Automatic fogspray device

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB867303A (en) 1958-02-24 1961-05-03 Shell Res Ltd Improvements in or relating to methods of inhibiting corrosion in the cargo tanks ofmarine vessels
US3227572A (en) * 1962-06-06 1966-01-04 Chevron Res Pipe repair process
US3488213A (en) * 1965-05-20 1970-01-06 Schlitz Brewing Co J Method and apparatus for applying a coating to the interior surface of a hollow article
US3673463A (en) 1969-06-30 1972-06-27 Gourdine Systems Inc Methods and apparatus for electrogasdynamic coating
DE3066513D1 (en) 1979-10-25 1984-03-15 Sumitomo Light Metal Ind Method, apparatus and spray nozzle for coating the inner surface of long tubes of small diameter
DE3006908C2 (en) 1980-02-23 1985-04-18 Fritz 8942 Ottobeuren Noack Device for the corrosion protection of metal surfaces
JPS5813226B2 (en) 1980-05-29 1983-03-12 株式会社 日本プラントサ−ビスセンタ− Lining method for pipe inner wall surface
US4314670A (en) * 1980-08-15 1982-02-09 Walsh William A Jun Variable gas atomization
JPS58189074A (en) 1982-04-30 1983-11-04 Hakko Co Ltd Method for repairing inner surface of existing pipe line
GB2123917B (en) 1982-04-30 1986-02-12 Hakko Co Lining underground pipes
GB2123516B (en) 1982-04-30 1986-02-05 Hakko Co Lining old underground pipes
JPS5952570A (en) 1982-09-20 1984-03-27 Nissan Motor Co Ltd Coating method
JPS59150578A (en) 1983-02-18 1984-08-28 Hakko Co Ltd Repairing method for inner surface of existing pipe
DE3910179C1 (en) * 1989-03-29 1990-03-29 J. Wagner Gmbh, 7990 Friedrichshafen, De
US5522930A (en) * 1994-11-04 1996-06-04 The Regents, University Of California Method and device for producing and delivering an aerosol for remote sealing and coating
DE10115463A1 (en) * 2001-03-29 2002-10-02 Duerr Systems Gmbh Atomizer for a coating system and process for its material supply
FI20080264L (en) * 2008-04-03 2009-10-04 Beneq Oy Coating method and device
DE102009052089A1 (en) * 2009-11-05 2010-06-17 Daimler Ag Device for conserving cavities in automobile body, has reducer provided in area of connection for strongly reducing cross section of line of specific length, where reducer is fixed in connection by press fit, sticking, or welding process
CN102601010A (en) * 2011-03-30 2012-07-25 中国石油化工集团公司 Natural gas pipe corrosion inhibitor coating device
FR3014334A3 (en) * 2013-12-05 2015-06-12 Renault Sa NOZZLE OF A PLATE OF INJECTION OF WAX

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3202363A (en) * 1963-07-01 1965-08-24 Aro Corp Automatic fogspray device

Also Published As

Publication number Publication date
EP3414020A1 (en) 2018-12-19
WO2017137520A1 (en) 2017-08-17
EP3414020B1 (en) 2020-04-08
CN108698066A (en) 2018-10-23
US10870124B2 (en) 2020-12-22
EP3205407A1 (en) 2017-08-16
CN108698066B (en) 2021-10-29
US20190022686A1 (en) 2019-01-24

Similar Documents

Publication Publication Date Title
EP2566627B1 (en) Coating device with jets of coating medium which are broken down into drops
EP2953732B1 (en) Application method and application facility
EP2040854B1 (en) Paint shop and corresponding method of operation
DE102016014953A1 (en) Painting plant and corresponding painting process
DE1571086A1 (en) Spray nozzle for creating coatings on objects
EP2461909A1 (en) Slotted nozzle
DE19812915A1 (en) Airbag device for motor vehicles
EP3205407B1 (en) Method and installation for covering internal walls of a cavity with a protective layer made of corrosion protecting wax
CH628093A5 (en) METHOD FOR APPLYING AN ANTI-RUST PROOF.
CH641062A5 (en) SPRAYER HEAD ON A PAINT SPRAY GUN.
EP2986395B1 (en) Painting method and a painting installation for painting a component with a character edge
DE1964981A1 (en) Spray nozzle for liquids and gases and processes for their production
DE10112562A1 (en) Outside mixing nozzle comprises a flat jet cap with two outlet openings which are located at the same distances from the central opening and communicate with inclined bores
DE202014105806U1 (en) Paint spraying unit for reversible arrangement on a spray gun
WO2004048001A1 (en) Ultrasonic standing wave spraying arrangement
DE102011079982A1 (en) Spray head for use in spray device for mixing and spraying polyurethane to manufacture polyurethane skin component, has spraying channel into which cleaning agent i.e. gas, is introduced via hole and feed channel in rest position of piston
DE2925435A1 (en) Spray head for pressurised liq. has opening for insert - with outer axial grooves forming nozzle ducts with wall of opening
DE102015006666A1 (en) Coating system and associated operating method
DE3329880A1 (en) METHOD FOR SPRAY COATING WITHOUT AIR AND SPRAY GUN FOR COATING WITHOUT AIR
DE102006046568B4 (en) Method for applying a release agent suspension and apparatus for carrying out the method
DE10139347B4 (en) Method and device for lubricating lubrication points with minimal lubricant quantities
DE202010015304U1 (en) jet
DE202014101462U1 (en) Device for generating liquid mist
DE102016014269A1 (en) Nozzle device with at least two nozzle plates and at least three openings
WO2017125547A1 (en) Device for distributing a cleaning fluid

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180212

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RIC1 Information provided on ipc code assigned before grant

Ipc: B05B 12/06 20060101ALI20180926BHEP

Ipc: B05D 7/14 20060101ALN20180926BHEP

Ipc: B05D 3/02 20060101ALN20180926BHEP

Ipc: B05D 1/02 20060101ALI20180926BHEP

Ipc: B05D 7/22 20060101ALI20180926BHEP

Ipc: B05B 13/06 20060101AFI20180926BHEP

Ipc: B05B 7/10 20060101ALN20180926BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

RIC1 Information provided on ipc code assigned before grant

Ipc: B05D 7/14 20060101ALN20181001BHEP

Ipc: B05B 13/06 20060101AFI20181001BHEP

Ipc: B05D 3/02 20060101ALN20181001BHEP

Ipc: B05D 1/02 20060101ALI20181001BHEP

Ipc: B05B 12/06 20060101ALI20181001BHEP

Ipc: B05B 7/10 20060101ALN20181001BHEP

Ipc: B05D 7/22 20060101ALI20181001BHEP

17Q First examination report despatched

Effective date: 20181029

RIC1 Information provided on ipc code assigned before grant

Ipc: B05B 7/10 20060101ALN20190318BHEP

Ipc: B05D 1/02 20060101ALI20190318BHEP

Ipc: B05D 7/22 20060101ALI20190318BHEP

Ipc: B05D 7/14 20060101ALN20190318BHEP

Ipc: B05B 12/06 20060101ALI20190318BHEP

Ipc: B05D 3/02 20060101ALN20190318BHEP

Ipc: B05B 13/06 20060101AFI20190318BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: B05B 12/06 20060101ALI20190429BHEP

Ipc: B05D 7/22 20060101ALI20190429BHEP

Ipc: B05D 1/02 20060101ALI20190429BHEP

Ipc: B05B 13/06 20060101AFI20190429BHEP

Ipc: B05D 3/02 20060101ALN20190429BHEP

Ipc: B05D 7/14 20060101ALN20190429BHEP

Ipc: B05B 7/10 20060101ALN20190429BHEP

INTG Intention to grant announced

Effective date: 20190517

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1183298

Country of ref document: AT

Kind code of ref document: T

Effective date: 20191015

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502016006748

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20190925

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191225

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191226

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200127

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200224

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502016006748

Country of ref document: DE

PG2D Information on lapse in contracting state deleted

Ref country code: IS

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200126

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20200626

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200229

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200209

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200229

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200229

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200229

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1183298

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210209

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502016006748

Country of ref document: DE

Representative=s name: WITTE, WELLER & PARTNER PATENTANWAELTE MBB, DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190925

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230217

Year of fee payment: 8

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230502

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240221

Year of fee payment: 9

Ref country code: GB

Payment date: 20240222

Year of fee payment: 9