EP0040369B1 - Appareil pour le traitement superficiel d'un objet - Google Patents

Appareil pour le traitement superficiel d'un objet Download PDF

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Publication number
EP0040369B1
EP0040369B1 EP19810103487 EP81103487A EP0040369B1 EP 0040369 B1 EP0040369 B1 EP 0040369B1 EP 19810103487 EP19810103487 EP 19810103487 EP 81103487 A EP81103487 A EP 81103487A EP 0040369 B1 EP0040369 B1 EP 0040369B1
Authority
EP
European Patent Office
Prior art keywords
sludge
liquid
vessel
treating
hoppers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19810103487
Other languages
German (de)
English (en)
Other versions
EP0040369A1 (fr
Inventor
Yoshinobu Takahashi
Yasuo Tokushima
Kentaro Ogata
Mamoru Suzuki
Jyoji Ito
Kenji Fukuta
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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
Priority claimed from JP6326880A external-priority patent/JPS56158896A/ja
Priority claimed from JP56012031A external-priority patent/JPS5919990B2/ja
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of EP0040369A1 publication Critical patent/EP0040369A1/fr
Application granted granted Critical
Publication of EP0040369B1 publication Critical patent/EP0040369B1/fr
Expired legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C3/00—Labelling other than flat surfaces
    • B65C3/06—Affixing labels to short rigid containers
    • B65C3/08—Affixing labels to short rigid containers to container bodies
    • B65C3/10—Affixing labels to short rigid containers to container bodies the container being positioned for labelling with its centre-line horizontal

Definitions

  • This invention relates to an apparatus for surface treatment effectively applicable for treating or finishing the surface of metal articles or objects when chemical coating, plating, etching, etc., is carried out.
  • objects-to-be-treated When practicing such a surface treatment objects-to-be-treated must be in general contacted with the treating liquid, and either of two ways, a spraying method in which the liquid is sprayed over the surface of the objects-to-be-treated and a dipping method in which the objects are dipped in the liquid, is selected for contacting the objects with the liquid.
  • the former spraying method is unsuitable for treating objects of complicated shape, for example car bodies which have portions difficult to be uniformly treated by spraying such as a fender, a door, or a constructed part into a box-like shape.
  • the liquid is liable not to sufficiently reach the inside surface of complicated corner, leaving sometimes untreated portions or sometimes unsatisfactorily treated portions.
  • a sludge removing apparatus disposed outside the vessel is apt to occupy an innegligible space and impose an innegligible cost. It is naturally accompanied by some other problems such as complicacy of piping for recycling, increasing of the recycled amount of the liquid, etc., and a still unsolved problem is flinging up of the deposited sludge on the vessel bottom.
  • the apparatus for performing the above- mentioned surface treatment in accordance with this invention is provided, as an essential feature, at the bottom portion of the treating vessel with one or more hoppers, which function to collect the deposited sludge. for exhausting the same through the lower portion of the hopper outside the treating vessel wherein a plurality of slant plates disposed above the bottom of the treating vessel are provided containing the treating liquid for performing an aimed surface treatment by dipping an object-to-be-treated in a treating liquid such as chemical conversion solution like phosphate; the slant plates are disposed, being inclined in the same direction, with a predetermined inter- distance among them.
  • the sludge produced in the treating liquid is gradually precipitated, while being floated therein, on the bottom of the vessel through the gap or clearance between the slant plates, which are not contacted with the vessel bottom.
  • This disposition of the slant plates facilitates the sludge produced in the vessel to be gradually precipitated or deposited down on the bottom thereof, by well functioning as protecting walls, almost not being affected by the flowing of the liquid and the movement of the objects-to-be-treated.
  • the deposited sludge can not be flung up into the liquid again by virtue of the slant plates, but can be easily taken away out of the vessel.
  • An apparatus shown in Figure 1 relates to, for example, zinc phosphating process as a preliminary treatment on an object-to-be-treated W 3 such as a car body when it is applied with coating.
  • an object-to-be-treated W 3 such as a car body when it is applied with coating.
  • the object W 3 is degreased with a trichloroethylene or alkaline solution, followed by water cleaning and contact with titanium phosphate solution as a second step.
  • nuclei of phosphate coating crystals are formed on the surface of the object W 3 .
  • An object W 3 which has been applied with such surface preparation is conveyed, being suspended from a hanging conveyor 27 as shown in Figure 1, from right to left for being dipped into treating liquid of a treating vessel 20.
  • the object W 3 which has been dipped into the treating liquid 4 at the initial stage of the process is gradually conveyed toward the final stage on the left side end for being completely covered in the meantime by the continuously grown zinc phosphate crystals all over the surface thereof.
  • the time required for this process is within the range of 60-300 seconds.
  • hoppers 22 (generally several in number) of funnel shape are formed as extensions from the bottom portion of the vessel 20 for depositing or precipitating the sludge on the bottom of the hopper 22.
  • the four hoppers 22 are horizontally arranged in series in parallel to a conveying direction Y of the objects-to-be-treated W 3 .
  • a multiplicity of slant plates 24 inclined by an angle (a) of 45-90° against the conveying direction of the objects W 3 are arranged parallelly with each other, keeping away from a wall surface 23 of the hopper 22 with a predetermined distance, viz., being not in contact therewith.
  • Those slant plates 24 function as protector walls for preventing the deposited sludge from being stirred by the flowing movement of the treating liquid.
  • each hopper 22 is provided at the lower end thereof with a one-way valve 26.
  • the treating vessel 20 is further provided with undermentioned several devices: a slant gush-spraying pipe 28 and a horizontal gush-spraying pipe 30 disposed on the rightward end portion, in Figure 1, of the vessel 20 for gush-spraying the treating liquid to the objects W 3 which are moved by a inclined conveyor 27 into the liquid in the vessel 20; a gushing nozzle 34 disposed, above a horizontal bottom portion 32 of the vessel 20 on the rightward side away from the hoppers 22, in communication with the slant gush-spraying pipe 28, for gushing the liquid toward the hoppers-arranged direction; and a recovering tank 36 for reservoiring the liquid overflowed out of the treating vessel 20.
  • a slant gush-spraying pipe 28 and a horizontal gush-spraying pipe 30 disposed on the rightward end portion, in Figure 1, of the vessel 20 for gush-spraying the treating liquid to the objects W 3 which are moved by a inclined conveyor 27 into the liquid in the vessel
  • the objects W 3 are transported in suspended state from the conveyor 27 in the direction designated with the arrow Y for being dipped into the liquid, while a part of the liquid reservoired in the recovering tank 36 is led, via conduits 38, 40, to the slant gush-spraying pipe 28 and via conduits 38, 42 to the horizontal gush-spraying pipe 30 by the action of a pump P 4 , for being gush-sprayed onto the just incoming objects W 3 .
  • the rest of the liquid in the recovering tank 36 is led, by the action of pumps P 5 , P 6 . via conduits 38, 44 back into the vessel 20 for being recycled, while making a counterflow in the direction designated by an arrow X against the movement of the objects W 3 in the liquid, to the recovering tank 36.
  • the sludge precipitated into the hoppers 22 comes first onto each of the parallelly arranged slant plates 24 and then drops through the gap therebetween as far as the wall surface of the individual hoppers 22, for finally being collected along the wall surface in the lower portion 46 of the respective hopper 22.
  • the sludge collected there in this way is intermittently delivered to a separater 50, by the action of a pump P 7 , via the one-way valve 26 and the conduit 48.
  • the liquid containing the thus collected sludge is separated at the separater 50, which is located out of the recycling circuit, for being returned to the recovering tank 36 or to a gush-spraying device disposed on the final stage side of the vessel 20.
  • the slant plates 24 arranged horizontally with each other in the lower portion of the vessel 20, and particularly in this case within the hoppers 22, are inclined against the flowing direction X of the liquid, i.e., the same direction to the object conveyance, stirring of the sludge collected in the lower portion 46 by the liquid flowed into between the slant plate 24 can not occur. And the conveyance operation of the objects as well as the gush-spraying of the liquid from the slant gush-spraying pipe 28 and the horizontal gush-spraying pipe 30 can not cause stirring or flinging uo of the sludge, either, because the slant plates 24 well prevent the phenomenon by functioning as protector walls.
  • the above described structure effectively protects the objects-to-be-treated W 3 from being deteriorated in quality by sticking of the sludge in floatation or flung up from the lower portion 46 of the hopper 22 in the course of the surface treatment.
  • the sludge deposited on the horizontal portion 32 is also removed therefrom into the lower portion 46 of the hopper 22 by the gushing of the liquid from the gushing nozzle 34, which means complete relief of the sludge from the bottom portion of the vessel 20.
  • This invention can be said to have succeeded, through remarkable decrease of the floating and depositing sludge, in improving the quality of the surface treatment, particularly the anti-corrosion coating quality, of the objects-to-be-treated W 3 .
  • all of the hoppers 22 arranged in series are of the same size, but a modified type wherein the nearest hopper 22 to the object incoming side end is made the largest in capacity and others are made gradually smaller toward the leftward end is preferably recommended, because the sludge producing rate is largest at the initial stage of contact between the object W 3 and the liquid.
  • a multiplicity of slant plates 68 inclined at an angle (f3) of 45-90° are arranged, parallelly to each other with a predetermined interdistance, in the horizontal direction and along the conveyance direction Y of the objects-to-be-treated W 4 . They are not in contact with the flat portion 66, just like slant plates 70 which are similarly arranged in the hopper 64 parallelly with each other and kept away from a wall surface 72 of the hopper 64 by a predetermined distance.
  • gushing nozzles 74 are arranged parallelly thereto for gushing the liquid toward the hopper 64 so as to wash away the deposited sludge thereon.
  • the sludge deposited on the flat portion 66 is therefore collected to the hopper 64 passing through the clearance formed between the slant plates 68 and the flat portion 66.
  • the sludge collected in the hopper 64 is led via a one-way valve 82 and a conduit 84 by the action of a pump P . to a separater 86 which is located outside the recycle circuit of the liquid.
  • the separated liquid in the separater 86 is returned to a recovering tank 76 or to a gush-spraying device 15, disposed on the final stage side of the vessel 60.
  • the remaining liquid in the recovering tank 76 is led via conduits 78, 88 by the action of pumps P 10 and P11 to the vessel 60 for being flowed in the direction designated with an arrow X so as to be re-utilized to the chemical conversion treatment of the objects W 4 .
  • the slant plates 68, 70 are, just like in the previous embodiment, inclined in the reversed direction X of that of the flowing of the liquid, they not only prevent the liquid from flowing therebetween but also prevent the deposited sludge from being flung up when the objects W 4 are moved in the liquid by functioning as protective walls.
  • This embodiment is particularly featured in eliminating disposition of many hoppers and consequently simplifying the structure of the bottom portion of the vessel, and besides in uni- formalizing the shape of, as well as reducing the size of, the slant plates.
  • the slant plates 24, 68, 70 are all inclined with an angle (a, A) of 45-90° in the conveying direction of the objects W, the direction marked the arrow Y, that is reversed against the flowing direction of the liquid marked the arrow X.
  • the inclined direction of the slant plates is in the same way as the direction of conveyance of the objects W for the better effect of the slant plates as the protective walls, but this invention is not limited to this way of arrangement.
  • a multiplicity of slant plates inclined in the inverted direction to the above embodiments are also allowable.
  • the preferable range lies within 45-90°, as an angle larger than 45° is favorable for smoothly sliding down the sludge without staying on the plate, an angle less than 45° being contrary undesirable because of easy piling up of the sludge on the plate.

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Claims (4)

1. Un appareil pour appliquer un traitement de surface pré-déterminé à un objet devant être traite, au moyen du trempage dudit objet dans un liquide traitant contenu dans une cuve de traitement, ledit appareil comprenant une ou plusieurs trémies (18, 22, 64) en forme d'entonnoir qui sont disposées au fond de la dite cuve de traitement (3, 20, 60) pour recueillir la boue précipitée dans lesdites trémies (18, 22, 64), ladite boue recueillie étant extraite de ladite cuve de traitement (3, 20, 60) par la partie inférieure desdites trémies (18, 22, 64), caractérisé en ce que'une pluralité de plaques en pente (24, 68, 70) inclinées dans la même direction sont disposées au dessus du fond de ladite cuve de traitement (3, 20, 60), avec une distance prédéterminée entre elles de sorte que la boue flottant dans ledit liquide puisse être précipitée à travers l'espace libre entre lesdites plaques en pente (24, 68, 70) vers le fond de ladite cuve de traitement (3, 20, 60).
2. Appareil suivant la revendication 1, caractérisé en ce que lesdites plaques en pente (24, 70) sont disposées dans lesdites trémies (22, 64).
3. Appareil suivant la revendication 1 ou la revendication 2, caractérisé en ce que la pluralité de plaques en pente (24, 68, 70) inclinées dans la même direction est disposée suivant un agencement horizontal zu dessus de parties plates (32, 66) du fond de ladite cuve de traite- . ment (20, 60) où ladite trémie (22, 64) n'est pas disposée, et en ce qu'au moins une buse de projection (34, 74) est disposée au dessus de ladite partie plate (32, 66) pour laver et chasser la boue précipitée sur ladite partie plate (32, 66) avec le liquide jaillissant dans lesdites trémies (22, 64).
4. Appareil suivant la revendication 3, caractérisé en ce que l'angle (a, fJ) formé entre lesdites plaques en pente (24, 68, 70) et la direction de transporte de l'objet devant être traité (W) est compris dans la plage de 45-90°.
EP19810103487 1980-05-12 1981-05-07 Appareil pour le traitement superficiel d'un objet Expired EP0040369B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP63268/80 1980-05-12
JP6326880A JPS56158896A (en) 1980-05-12 1980-05-12 Surface treating device
JP12031/81 1981-01-29
JP56012031A JPS5919990B2 (ja) 1981-01-29 1981-01-29 化成処理方法及びその装置

Publications (2)

Publication Number Publication Date
EP0040369A1 EP0040369A1 (fr) 1981-11-25
EP0040369B1 true EP0040369B1 (fr) 1984-02-15

Family

ID=26347570

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810103487 Expired EP0040369B1 (fr) 1980-05-12 1981-05-07 Appareil pour le traitement superficiel d'un objet

Country Status (2)

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EP (1) EP0040369B1 (fr)
DE (1) DE3162243D1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6143575Y2 (fr) * 1980-09-01 1986-12-09
DE3176694D1 (en) * 1981-05-05 1988-05-05 Toyota Motor Co Ltd Method of treating the surface of an object and apparatus therefor
FR2512071A1 (fr) * 1981-08-31 1983-03-04 Nippon Paint Co Ltd Appareil de phosphatation de surfaces metalliques par trempage et procede d'evacuation des boues d'un bain de phosphatation
DE3201769A1 (de) * 1982-01-21 1983-07-28 Nihon Parkerizing Co. Ltd., Tokyo Verfahren und vorrichtung zur behandlung von stahlblechstrukturen
DE3824063A1 (de) * 1988-07-15 1990-01-18 Metallgesellschaft Ag Verfahren zur verminderung der verkrustung von phosphatieranlagen
DE3840668A1 (de) * 1988-12-02 1990-06-07 Metallgesellschaft Ag Verfahren beim phosphatieren von metalloberflaechen
DE4432352A1 (de) * 1994-09-12 1996-03-14 Bayerische Motoren Werke Ag Verfahren zum Transportieren von Rohkarossen in Behandlungsbädern
EP0792950A4 (fr) * 1995-09-28 1998-12-16 Kawasaki Steel Co Procede de dechargememt d'un depot de particules solides et equipement correspondant
DE10023024A1 (de) * 2000-05-11 2001-11-15 Duerr Systems Gmbh Becken zur Aufnahme einer Flüssigkeit zur Oberflächenbehandlung von Werkstücken
DE10251047A1 (de) * 2002-11-02 2004-05-19 Bayerische Motoren Werke Ag Anlage zum Behandeln, insbesondere zum Lackieren von Gegenständen
CN109899666B (zh) * 2019-03-06 2024-04-16 上海工程技术大学 一种零件表面浸润处理工艺及装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE689446C (fr) * 1936-12-01 1940-03-21 Metallgesellschaft Akt Ges
GB713438A (en) * 1951-03-22 1954-08-11 Pyrene Co Ltd Improvements relating to the phosphate coating of metals
BE551575A (fr) * 1955-10-07
DE2353282A1 (de) * 1973-10-22 1975-05-07 Mannesmann Roehren Werke Ag Verfahren zum reinigen von baedern mit sedimentierendem schlamm und vorrichtung zur durchfuehrung des verfahrens
JPS5576076A (en) * 1978-12-05 1980-06-07 Nippon Paint Co Ltd Immersion type phosphate-treating method and apparatus thereof

Also Published As

Publication number Publication date
DE3162243D1 (en) 1984-03-22
EP0040369A1 (fr) 1981-11-25

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