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EP2698445B1 - Dispositif et procédé destinés au revêtement de pièces métalliques - Google Patents

Dispositif et procédé destinés au revêtement de pièces métalliques Download PDF

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Publication number
EP2698445B1
EP2698445B1 EP13180627.5A EP13180627A EP2698445B1 EP 2698445 B1 EP2698445 B1 EP 2698445B1 EP 13180627 A EP13180627 A EP 13180627A EP 2698445 B1 EP2698445 B1 EP 2698445B1
Authority
EP
European Patent Office
Prior art keywords
coating liquid
collecting
valve
collecting container
container
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
EP13180627.5A
Other languages
German (de)
English (en)
Other versions
EP2698445A2 (fr
EP2698445A3 (fr
Inventor
Waldemar Baumann
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.)
GESI Gewindesicherungs-GmbH
Original Assignee
GESI Gewindesicherungs-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 GESI Gewindesicherungs-GmbH filed Critical GESI Gewindesicherungs-GmbH
Priority to PL13180627T priority Critical patent/PL2698445T3/pl
Publication of EP2698445A2 publication Critical patent/EP2698445A2/fr
Publication of EP2698445A3 publication Critical patent/EP2698445A3/fr
Application granted granted Critical
Publication of EP2698445B1 publication Critical patent/EP2698445B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material

Definitions

  • the invention further relates to the use of a device according to the invention for the coating of threads or threaded parts of screws and nuts, with a coating liquid containing adhesive-containing microcapsules, and a method for coating metal parts, preferably the threads of screws and nuts, with a coating liquid containing adhesive-containing microcapsules, with a device according to the invention.
  • the screws or nuts are coated with a suspension containing microcapsules and then dried.
  • the microcapsules are destroyed.
  • the adhesive fills the space between the threads, hardens there and secures the screw connection.
  • the microcapsules used are not very resistant, since it is desirable that these be destroyed when screwing in the screw or nut. It can therefore be seen that the microcapsules can also be destroyed during the coating, which is undesirable.
  • microencapsulated adhesives are very expensive to manufacture, so minimizing losses during coating is desired.
  • a method for reusing past the workpiece on the injection molding in automatic spray systems is from the DE 22 55 914 A1 known.
  • the WO 02/04131 A1 describes a method for coating objects with adhesive and a device suitable for this purpose. Method and apparatus make use of a collecting tank for excess adhesive.
  • the US 4 325 985 A describes a method of coating screw threads with a liquid resin.
  • the collecting unit by means of a collecting line, which is provided with a valve, with at least one pressurizable collecting container in Connection is that the collecting container is further provided with a compressed air source, a vent valve and a riser, and the riser opens into the reservoir, wherein the control unit controls the valve, the vent valve and the compressed air source.
  • the coating liquid located in the collecting container can be gently transported back into the reservoir by the valve and the vent valve are closed and the collecting container is then pressurized.
  • the riser is structurally arranged such that its lower end is is below the level of the coating liquid, so that the coating liquid can escape when pressurizing the collecting container with pressure only through the riser.
  • the compressed air can be provided for example via a preferably decentralized compressor, but in particular also via a compressed air turbine.
  • the collecting container is equipped with a filling level sensor.
  • the control unit receives signals emitted by the level sensor and in response controls the valve, the bleed valve, and the compressed air source.
  • the device according to the invention is accordingly designed such that the filling level sensor determines the level of the coating liquid and transmits corresponding signals to the control unit.
  • the control unit Upon attaining a settable level of the coating liquid in the catch tank, the control unit then controls the valve, the vent valve, and the source of pressurized air to return the coating liquid to the reservoir.
  • control unit regulate valve, vent valve and compressed air source via a time program. It can be provided, for example, instead of the level detection of the level sensor, that the collecting container is emptied at regular intervals.
  • the device is equipped with two collecting containers. More preferably, the valve is designed as a three-way valve.
  • the collecting line is thus branched by means of the three-way valve, wherein both collecting lines each downstream of the three-way valve open into a collecting container. Both receptacles are also connected to the compressed air source.
  • the three-way valve is controlled so that the collecting unit is always in communication with one of the collecting container.
  • the other collecting container is thus separated and can be pressurized accordingly after closing the associated venting valve, so that the coating liquid contained therein back to the reservoir can be promoted.
  • the invention provides that the control unit synchronizes the emptying of a collecting container with the filling of the other collecting container. Knowing the approximate flow rate of the coating liquid flowing through the collecting line, the controller can be set up so that the return of the coating liquid in a collecting container is adjusted to the collecting amount of excess coating liquid in the other collecting container.
  • the time required for emptying a full collection container thus essentially corresponds to the time necessary to fill the other collection container with the same amount of coating liquid.
  • both collecting containers can be driven synchronously "in push-pull". This is particularly advantageous for a simple and low-interference design of the device according to the invention.
  • the control is thus clearly simplified, so that components such. the compressed air source, not constantly switched on and off, which has a positive effect on the life of the device according to the invention.
  • a still preferred development of the invention is characterized by a collecting unit, which is designed as a collecting tray.
  • the drip tray is particularly suitable for a coating unit which is designed for spraying the metal parts to be coated.
  • the drip tray is preferably located immediately below the coating unit and can thus catch dripping, excess coating liquid. Further, the drip tray is formed, for example, funnel-shaped, that the collected coating liquid can be passed into the collecting line.
  • the invention further provides that a supply of fresh coating liquid is provided in the collecting unit.
  • a supply of fresh coating liquid is provided in the collecting unit.
  • the invention further provides for the use of the device according to the invention for the coating of threads or threaded parts of screws and nuts, with a coating liquid containing adhesive-containing microcapsules.
  • the invention provides that the following steps are carried out with a method according to the invention: filling the storage container with coating liquid, coating the metal parts, collecting excess coating liquid in the collecting unit, introducing excess Coating liquid into the or a collecting container, closing the valve and the venting valve, pressurizing the collecting container with compressed air and thus returning the coating liquid via the riser into the reservoir, termination of compressed air supply and pressure relief by opening the vent valve, and opening the valve in the collecting line.
  • valve and the vent valve are closed only when the coating liquid has reached a preset level in the collecting container.
  • a preset level in the collecting container.
  • the inventive method further preferably provides that two collecting containers are driven alternately, wherein a collecting container receives excess coating liquid and the other collecting container is pressurized with compressed air for the purpose of returning the coating liquid. More preferably, the return conveyance of the coating liquid in a collecting container is adjusted to the collecting amount of excess coating liquid in the other collecting container. More preferably, the control of the method is a time control.
  • the inventive method can be performed with a relatively simple device according to the invention. For example, can be dispensed with an expensive and possibly fault-prone electronic control and level sensors and instead the process can be controlled by means of a relatively simple time switch.
  • a further advantageous development of the method according to the invention provides that fresh coating liquid is guided into the collecting unit. More preferably, the supplied amount of fresh coating liquid corresponds to the consumption amount of coating liquid. Thus, the amount of coating liquid in circulation can not go below a predetermined amount. Even more advantageously, the amount of coating liquid in circulation is kept constant. This is particularly advantageous when the inventive method is time-controlled, otherwise there is a risk that the circulating amount of coating liquid is too small and consequently the device according to the invention - even if only temporarily - dry, resulting in a deficient or possibly missing Can cause coating of the metal parts.
  • a device which has a reservoir 1, a control unit 3, a connected to the reservoir 1 by means of a line 5 coating unit 7.
  • a collecting unit 9 for collecting excess coating liquid is arranged, which is connected by means of a collecting line 11 with a collecting container 13.
  • the collecting line 11 is provided with a valve 15 and thus - depending on the position of the valve 15 - be interrupted.
  • the collecting container 13 is further connected to a compressed air source 17 by means of a compressed air line 19.
  • a riser 21 leads from the collecting container 13 to the reservoir 1.
  • a level sensor 23 is provided, which is in communication with the control unit 3.
  • this has a vent valve 25.
  • the control unit 3 is also connected to the valve 15, the compressed air source 17 and the vent valve 25 for controlling these.
  • excess coating liquid initially passes into the collecting unit 9, which may be formed, for example, as a collecting tray or trough, and consequently via the collecting line 11 into the collecting container 13, where the coating liquid is first collected.
  • the control unit 3 Upon reaching a definable level of the coating liquid in the collecting container 11 of the level sensor 23 sends a corresponding signal to the control unit 3, which then closes the valve 15 and the vent valve 25.
  • the collecting container 13 is acted upon with air from the compressed air source 17 via the compressed air line 19.
  • the riser 21 is arranged such that its end is below the level of the coating liquid.
  • the coating liquid is supplied via the riser 21 from the collecting container 13 when pressurizing the collecting container 13 with pressure and returns to the reservoir 1, where the coating liquid is available for coating again. If the level sensor detects 23 that the collecting container 13 is empty again or has reached a definable vacancy, he sends a corresponding signal to the control unit 3, which in turn closes the compressed air supply and the valve 15 and the vent valve 25 opens again, so that the from the collecting unit 9 collected coating liquid can flow back into the collecting container 13.
  • Fig. 2 shows a schematic representation of a device according to the invention in an embodiment with two collecting containers 13.
  • the essential structure of the device corresponds to that of the device of Fig. 1 , However, the collecting line is provided with a three-way valve 27 instead of the valve 15, which can guide the coating liquid to one of the two collecting container 13 A or B depending on the switching position.
  • the operation also essentially corresponds to that of the device from the Fig. 1 ,
  • the associated level sensor 23 sends a signal to the control unit 3 which in response actuates the three-way valve 27, closes the full sump breather valve 25 and the source of pressurized air 17 controls.
  • the coating liquid is thus conveyed back to the reservoir 1.
  • control of the device according to the invention can be provided that, depending on the flow rate of flowing through the collecting line 11 coating liquid, the three-way valve 27 and consequently the vent valves 25 and the compressed air source 17 are controlled in time, so that the filling time of a collecting container 13 essentially corresponds to the time which is necessary for emptying the other full collecting container 13.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)

Claims (17)

  1. Dispositif de revêtement de pièces métalliques, de préférence du filet de vis et d'écrous, avec un liquide de revêtement qui contient des microcapsules contenant un adhésif, comprenant :
    - un réservoir de stockage (1) pour le liquide de revêtement,
    - une unité de commande (3),
    - une unité de revêtement (7) reliée au réservoir de stockage (1) au moyen d'une conduite de liaison (5),
    - une unité de collecte (9) pour recueillir le liquide de revêtement en excès ;
    caractérisé en ce que l'unité de collecte (9) est en liaison au moyen d'une conduite de collecte (11), qui est munie d'une soupape (15, 27), avec au moins un réservoir de collecte (13) pouvant être mis sous pression, en ce que le réservoir de collecte (13) est en outre muni d'une source d'air comprimé (17), d'une soupape de ventilation (25) et d'une colonne montante (21), et la colonne montante (21) débouche dans le réservoir de stockage (1), dans lequel l'unité de commande (3) régule la soupape (15, 27), la soupape de ventilation (25) et la source d'air comprimé (17).
  2. Dispositif selon la revendication 1, caractérisé en ce que le réservoir de collecte est équipé d'un détecteur de niveau de remplissage (23).
  3. Dispositif selon la revendication 2, caractérisé en ce que l'unité de commande (3) reçoit des signaux envoyés par le détecteur de niveau de remplissage (23) et en réponse à ceux-ci commande la soupape (15, 27), la soupape de ventilation (25) et la source d'air comprimé (17) .
  4. Dispositif selon une revendication 1 ou 2, caractérisé en ce que l'unité de commande (3) régule la soupape (15, 27), la soupape de ventilation (25) et la source d'air comprimé (17) au moyen d'un programme horaire.
  5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif est équipé de deux réservoirs de collecte (13A, 13B).
  6. Dispositif selon la revendication 5, caractérisé en ce que la soupape est formée par une soupape à trois voies (27).
  7. Dispositif selon une revendication 5 ou 6, caractérisé en ce que l'unité de commande (3) synchronise la vidange d'un réservoir de collecte (13A, 13B) avec le remplissage de l'autre réservoir de collecte (13A, 13B).
  8. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de collecte (9) est une cuvette de collecte.
  9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé par une arrivée pour du liquide de revêtement frais dans le dispositif de collecte (13).
  10. Utilisation du dispositif selon l'une quelconque des revendications précédentes pour le revêtement de filets ou de parties de filet de vis et d'écrous, avec un liquide de revêtement, qui contient des microcapsules contenant un adhésif.
  11. Procédé de revêtement de pièces métalliques, de préférence des filets de vis et d'écrous avec un liquide de revêtement qui contient des microcapsules contenant un adhésif, avec un dispositif selon l'une quelconque des revendications 1 à 9, comprenant les étapes suivantes :
    - remplir le réservoir de stockage (1) avec un liquide de revêtement,
    - revêtir les pièces de métal,
    - recueillir le liquide de revêtement en excès dans l'unité de collecte (9),
    - introduire le liquide de revêtement en excès dans le ou un réservoir de collecte (13),
    - fermer la soupape (15, 27) et la soupape de ventilation (25),
    - soumettre le réservoir de collecte (13) à de l'air comprimé et ainsi renvoyer le liquide de revêtement par la colonne montante (21) dans le réservoir de stockage (1),
    - terminer l'ajout d'air comprimé et détendre la pression par l'ouverture de la soupape de ventilation, (25), et
    - ouvrir la soupape (15, 27) dans la conduite de collecte.
  12. Procédé selon la revendication 11, caractérisé en ce que l'on ne ferme la soupape (15, 27) et la soupape de ventilation (25) que lorsque le liquide de revêtement a atteint un niveau préalablement réglé dans le réservoir de collecte (13).
  13. Procédé selon la revendication 11, caractérisé en ce que l'on pilote alternativement deux réservoirs de collecte (13A, 13B), dans lequel un réservoir de collecte (13A, 13B) contient le liquide de revêtement en excès et l'autre réservoir de collecte (13A, 13B) est soumis à l'air comprimé afin de renvoyer le liquide de revêtement.
  14. Procédé selon la revendication 13, caractérisé en ce que le renvoi du liquide de revêtement dans un réservoir de collecte (13A, 13B) est accordé à la quantité de liquide de revêtement en excès recueillie dans l'autre réservoir de collecte (13A, 13B).
  15. Procédé selon une revendication 13 ou 14, caractérisé en ce que la commande du procédé est une commande synchronisée.
  16. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on conduit du liquide de revêtement frais dans l'unité de collecte (13) .
  17. Procédé selon la revendication 16, caractérisé en ce que la quantité ajoutée de liquide de revêtement frais correspond à la quantité de liquide de revêtement consommée.
EP13180627.5A 2012-08-16 2013-08-16 Dispositif et procédé destinés au revêtement de pièces métalliques Active EP2698445B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13180627T PL2698445T3 (pl) 2012-08-16 2013-08-16 Urządzenie i sposób powlekania części metalowych

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012016189.1A DE102012016189A1 (de) 2012-08-16 2012-08-16 Vorrichtung und Verfahren zum Beschichten von Metallteilen

Publications (3)

Publication Number Publication Date
EP2698445A2 EP2698445A2 (fr) 2014-02-19
EP2698445A3 EP2698445A3 (fr) 2017-06-14
EP2698445B1 true EP2698445B1 (fr) 2019-04-10

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EP13180627.5A Active EP2698445B1 (fr) 2012-08-16 2013-08-16 Dispositif et procédé destinés au revêtement de pièces métalliques

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EP (1) EP2698445B1 (fr)
DE (1) DE102012016189A1 (fr)
PL (1) PL2698445T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH713909A1 (de) * 2017-06-21 2018-12-28 Soudronic Ag Vorrichtung zur unterbruchlosen Beschichtung von Dosenzargen und Betriebsverfahren.
CN206925707U (zh) * 2017-09-29 2018-01-26 富准精密电子（鹤壁）有限公司 药剂自动添加装置
CN115582249A (zh) * 2022-08-19 2023-01-10 习新明 液面稳定的供给装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2255914A1 (de) * 1972-11-15 1974-05-30 Franz Schlapp Ohg Holzbearbeit Verfahren zum wiederverwenden des am werkstueck vorbeigegangenen spritzgutes bei automatischen spritzanlagen
US4325985A (en) * 1980-03-31 1982-04-20 The Oakland Corporation Thread lock
US6458417B2 (en) * 2000-07-07 2002-10-01 Akzo Nobel N.V. Method of gluing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Also Published As

Publication number Publication date
PL2698445T3 (pl) 2019-09-30
DE102012016189A1 (de) 2014-02-20
EP2698445A2 (fr) 2014-02-19
EP2698445A3 (fr) 2017-06-14

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