• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The method is particularly suitable for applying enamel by electrophoresis inside a hollow body, e.g. a sheet metal part. It consists in using an expandable cathode which, when expanded, approaches the interior angles of the hollow body, thereby favoring deposition of enamel in otherwise unfavored regions of the hollow body. Also, the expandable cathode is hollow and has a fluid flowing through it to drain off unwanted ions which could damage the enamel slip.
    公开号:SU828980A3
    申请号:SU782644253
    申请日:1978-07-31
    公开日:1981-05-07
    发明作者:Жернез Ален
    申请人:Компани Эропеен Пур Л"Экипманменажер "Сепем" (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to coating, in particular to devices for enameling by electrophoresis.
    A device for coating on hollow articles containing an electrode made in the form of a conductive membrane, and a mechanism for changing the configuration of the electrode {1].
    The enamel deposition by electrophoresis is based on the principle of electric current transfer of enamel particles, which are in the form of a suspension in a solvent, between the cathode and the article, which serve as the anode.
    In the case of coating articles of complex configuration having intra rennie corners 15, the cathode must be placed as close as possible to the center of the radius of curvature of the product.
    A disadvantage of the known device is that it cannot be applied 20 enamel of the required thickness to the inner corners of hollow bodies of sheet material, that is, reliable protection of the product from aggressive environment is not provided.
    The aim of the invention is to increase the quality of coatings 25 on parts of complex configuration.
    This goal is achieved in that in a device containing an electrode made in the form of a conductive membrane, and a mechanism for changing the configuration of the electrode, the electrode is made in the form of flexible tubular elements mounted 5 on jacks.
    A feature of the device is also that the electrode is made in the form of a spring with a current supply of flexible wire wound on a spring.
    The mechanism for changing the configuration of the electrode is made in the form of inflatable chambers and a system of levers connected via rods to a flexible tubular element.
    The electrode can be made in the form of two springs with different directions of winding, interconnected by a tube, with a current lead of flexible wire and a fabric membrane mounted on the springs.
    In FIG. 1 shows the proposed device, front view (in working position); in FIG. 2 is an enlarged view of a sliding electrode; in FIG. 3 - same, plan view; in FIG. 4 - the same front view (in the retracted position); in FIG. 5 is an embodiment of a sliding cathode.
    The device consists of a cathode assembly containing fixed main cathodes 1 and sliding auxiliary kata 828980 dY 2. The main cathodes 1 are located in the center of the device and are designed for applying enamel to the flat side surfaces of the product 3. Auxiliary cathodes 2 are designed for applying enamel to the inner corners of the product. The auxiliary cathodes are made in the form of movable non-deformable elements 4 and tubular elements 5 mounted on the elements 4. The movement of the elements 4 is carried out by means of a flexible jack 6 and a rod system 7 made of rubber straps with an internal rigid element. Traction can transmit force both in tension and in compression without rotation.
    The tubular element 5 is formed by a flat spring 8 made of stainless steel, around which a flat copper braid 9 is wound, ensuring the passage of electric current. Around the spring is a tissue electrodialysis membrane.
    Thus, the cathode takes the form of a tube, which can be resized using a pneumatic or hydraulic jack.
    The jacks are made in the form of inflatable chambers 10, bounded by an insulated plate 11 fixed with a screw on the cathodes 1. When the chambers 10 are inflated, they compress the shell 12 to which the rods 7 are attached. These rods are connected to an insulating ring 13 mounted on the movable element 4. The ring ends with insulating stops 14, which serve to form a gap between the cathode and the wall of the product. Compression of the sheath provides the removal of cathodes. The tubular element 5 can be formed by two springs 15 and 16 with the right and left direction of the turns, around which there are copper braids 17, 18. The springs are connected by a tube 19. The tube is flattened, and the entire assembly is placed in a fabric membrane 20. This option allows the central part of the element 5 rotate around its axis under tension produced by the elements 4. Thus, the elongation of the element is greater than when using the option with a single spring.
    The device operates as follows.
    The mechanism is placed in the internal cavity of the product and the entire structure is lowered into the bath with the suspension, then, by bleeding air or liquid from the chambers 10, the elements 4 and 5 are moved apart. The stops 14 are in contact with the product and fix the device. An electric current is passed between the product and the cathode, while the product is coated. They supply air to the chambers, while the cathodes are removed from the product and the coating is applied to those places where the stops were in contact with the product.
    The device allows you to apply a high-quality layer of enamel on products of various sizes, and the neck of the product may be less than the average internal section.
    Hydrogen and ionized chemicals are removed through the membrane surrounding the cathodes, which makes it possible to obtain an even, high-quality surface.
    权利要求:
    Claims (4)
    [1]
    2. The main cathodes 1 are located in the center of the device and are intended for applying enamel on the flat side surfaces of product 3. Auxiliary cathodes 2 are intended for applying enamel on the inside corners of the product. Auxiliary cathodes are made in the form of movable non-deformable elements 4 and tubular elements 5 mounted on elements 4. Movement of elements 4 is carried out by means of a flexible jack 6 and a system of rigs 7 made of rubber straps with an internal rigid element. Ti gi can transmit force during stretching and compression without twisting. The tubular element 5 is formed by a flat spring 8 made of stainless steel, around which is wound a flat copper braid 9, which ensures the passage of electric current. A tissue electrodialysis membrane is located around the spring. Thus, the cathode takes the form of a tube that can be resized using a pneumatic or hydraulic jack. The jacks are made in the form of inflatable chambers 10 bounded by an insulated plate 11 fixed by means of a screw on the cathodes 1. When the chambers 10 are inflated, they cause compression of the shell 12 to which the straps 7 are attached. on the movable member 4. The ring is terminated by insulating lugs 14, which serve to form a gap between the cathode and the wall of the product. Compression of the shell provides the removal of cathodes. The tubular element 5 can be formed by two springs 15 and 16 with the right and left direction of the coils, around which copper braids 17, 18 are located. The springs are connected by a tube 19. The tube is flattened and the entire assembly is placed in the fabric membrane 20. This variant allows the central part element 5 is rotated around its axis during stretching produced by elements 4. Thus, the elongation of the element is obtained more than when using the version with one spring. The device works as follows. The mechanism is placed in the internal cavity of the product and the whole structure is lowered into the suspension bath, then by venting air or liquid from the chambers 10 the elements 4 and 5 are moved. The stops 14 touch the product and fix the device. An electric current is passed between the product and the cathode, and the product is coated. Air is supplied to the chambers, whereby the cathodes are removed from the product and the coating is applied to the places where the stops are in contact with the product. The device allows to apply a quality layer of enamel on products of various sizes, and the neck of the product can be smaller than the average internal section. Hydrogen and ionized chemicals are removed through the membrane surrounding the cathodes, resulting in a smooth, high-quality surface. Claim 1. A device for applying enamel by electrophoresis to hollow articles, containing an electrode made in the form of a conductive membrane, and a mechanism for changing the configuration of the electrode, characterized in that, in order to improve the quality of the coating on details of a complex configuration, the electrode is made flexible tubular elements mounted on jacks.
    [2]
    2. The device according to claim 1, characterized in that the electrode is made in the form of a spring with a current lead of a flexible wire wound on a spring, and a fabric membrane fixed to the spring.
    [3]
    3. The device according to paragraphs. 1 and 2, characterized in that the mechanism for changing the configuration of the electrode is made in the form of inflatable chambers and a system of levers connected by means of t with flexible tubular elements.
    [4]
    4. The device according to claim 1, characterized in that the electrode is made in the form of two springs with different directions of winding, interconnected by a tube, with a current lead of flexible wire and a fabric membrane fixed to the springs. Sources of information taken into account in the examination 1. USSR author's certificate Yao 333984, cl. B 05C 7/00, 1969.
     5 12 //
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    同族专利:
    公开号 | 公开日
    IT7826166D0|1978-07-27|
    DE2832518A1|1979-02-15|
    IT1112292B|1986-01-13|
    ES472264A1|1979-02-16|
    CH632015A5|1982-09-15|
    GB2002034A|1979-02-14|
    FR2399492A1|1979-03-02|
    SE7808187L|1979-02-02|
    US4163703A|1979-08-07|
    JPS5448837A|1979-04-17|
    FR2399492B1|1980-07-11|
    GB2002034B|1982-02-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3922213A|1974-10-23|1975-11-25|Aluminum Co Of America|Method and apparatus for uniformly electrocoating the interior of a shaped metal container|DE3136187C2|1981-09-12|1988-08-18|Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe|Method and device for cleaning the inner walls of metallic pipe systems by electropolishing with the aid of moving electrodes|
    DE3932037A1|1989-09-26|1991-04-04|Asea Brown Boveri|METHOD FOR PRODUCING A CERAMIC MOLDED BODY|
    US4952293A|1989-12-29|1990-08-28|Xerox Corporation|Polymer electrodeposition process|
    FR2806098B1|2000-03-09|2002-08-16|Usinor|DEVICE FOR ELECTRODEPOSITION OF AN ANNULAR METAL PART OF COMPLEX FORM|
    US20070190263A1|2006-02-10|2007-08-16|Finch John G|Internal coating technique for non-cylindrical components|
    JP5657417B2|2011-02-16|2015-01-21|三菱電線工業株式会社|Electrodeposition method and electrodeposition apparatus|
    US8603313B2|2011-08-05|2013-12-10|Ppg Industries Ohio, Inc.|Electrode configurations for coating interior and exterior surfaces of conductive substrates in an electrodeposition coating process|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7723592A|FR2399492B1|1977-08-01|1977-08-01|
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