• 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:
    Steel pipes pass through an extruder with a low-pressure antechamber for obtaining suction of an extruded hose against the pipe. The entrance to that antechamber is sealed by a combination of rubber elastic and spring steel disks, the latter having tongues being deflected by the pipe entering the chamber, and tongues of one disk sealingly cover the slots of an adjacent disk.
    公开号:SU976841A3
    申请号:SU813250652
    申请日:1981-02-13
    公开日:1982-11-23
    发明作者:Ландграф Хельмут；Штуке Вальтер
    申请人:Маннесманн Аг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to chemical engineering, in particular to devices for coating steel pipes with tubular thermoplastic films obtained by extrusion. 5
    A device for coating steel pipes with tubular films of thermoplastic containing an extrusion head with a slotted mouthpiece, a low pressure chamber 10 and a sealing sleeve located at the end of the chamber co. side of the inlet [1].
    A disadvantage of the device is that when the heated pipe 15 passes through the sealing collar, rubber particles remain on it, which leads to an unstable connection of the tubular film to the pipe surface.
    The purpose of the invention - improved Ka 2 0-operation by increasing the strength of the bond coating to the pipe surface.
    This goal is achieved by the fact that in the device for coating steel pipes with tubular films of thermoplastic, containing an extrusion head with a slotted mouthpiece, a low-pressure chamber and a sealing collar located at the end of the chamber from the inlet side, the sealing collar is provided with ring rings that are tightly adjacent to each other washers made of sheet steel spring, made around the inner circumference in the form of lamellar reeds formed by radial cuts, spring-loaded to the pipe surface.
    In addition, the surfaces of the reeds in are filled with displaced in relation to each other and partially overlap. from
    Moreover, the tongues located one after another are made stepwise in length so that their ends are placed on the surface of the pipe in one plane.
    Ring washers are placed between two elastic gaskets and secured between two flange rings mounted on the end of the low pressure chamber from the inlet side, the diameter of the front ring washer facing the low pressure chamber being larger than the diameter of the rear ring washer.
    In FIG. 1 shows a device along a low-pressure chamber with an attached extrusion head and a steel pipe coated with a film, longitudinal section; in FIG. 2 - without steel pipe; in FIG. 3 ~ sealing cuff, front view.
    The device comprises an extrusion die 1 with slotted mouthpieces 2 and 3. Thermoplastic comes out of the annular slit of the mouthpiece 2, in particular polyethylene, and contact adhesive, in particular ethylene copolymer, is both tubular in the annular slit of the mouthpiece · 3. . form. The extrusion head 1 is connected to a low-pressure chamber 4, in which a low pressure of 500 mm high water is created using the connecting element 5. “A sealing collar is placed on the end of the low-pressure chamber 4 from the inlet side 6, which consists of tightly adjacent to each other ring washers 7 “9 of spring steel sheet, made on the inner circumference in the form of lamellae tabs 10 formed by radial cuts, 'spring-loaded to the surface of the pipe 11,
    The surface of the reeds 10 are made offset relative to each other and partially overlap. The tongues 10, one after the other, are made stepwise along the length so that their ends are placed on the surface of the pipe 11 in one plane. Ring washers 7-9 are placed between two elastic gaskets 12 and 13 and are fixed between two flange rings 14 and 15 mounted on the end of the low pressure chamber 4 from the inlet side 6, the diameter of the front ring washer 9 facing the chamber 4 being large. than the diameter of the rear annular washer 7 and releases the tongues 10 of the annular washers 7 “9 spring-loaded to the surface of the pipe 11 by a small size. To enter the pipe device is provided conically, an expanded pipe 16.
    The device operates as follows.
    The steel pipe 11 is supplied through a conically expanded pipe 16 to a low pressure chamber 4, in which a reduced pressure of about 500 mm Hg is created between the extruding head 1 from the annular slotted mouthpiece 2 of the extrusion head 1 and the pipe surface 11, due to which the film without air 10 'n bubbles closely adheres to the surface of the pipe. The low-pressure chamber 4 is sealed by means of a sealing collar consisting of steel ring washers 7 ″ 9, made 15 around the inner circumference in the form of plate tongues 10, spring-loaded to the surface of the pipe 11.
    Using the invention will allow to obtain high-quality and durable coating of steel pipes with various thermoplastic materials.
    权利要求:
    Claims (1)
    [1]
    1. USSR author's certificate №, cl. In 29 F 3/10, 1975 (prototype).
    12 10 P 15 / A /
    / IZfOffiWf
    FIG. g
    f
    类似技术:
    公开号 | 公开日 | 专利标题
    SU976841A3|1982-11-23|Apparatus forp coating steel tubes by tubular thermoplastic films
    US4350372A|1982-09-21|Expansion coupling for large diameter plastic pipes
    JP3398873B2|2003-04-21|Plastics push-in fittings
    KR100385641B1|2003-08-14|Polymer tube
    US4800109A|1989-01-24|Flexible composite hose
    US3891007A|1975-06-24|Exteriorly corrugated hose of composite materials
    US5082297A|1992-01-21|Gasket and gasketed joint
    RU93004931A|1996-12-20|T-COUPLING FOR FLEXIBLE PIPES
    SE457949B|1989-02-13|EXPRESSION VALVE FOR A GASTAETT CLOSED PACKAGING PASS AND SET FOR ITS BUILDING
    US3640312A|1972-02-08|Flexible corrugated tubing having improved performance characteristics
    US5143408A|1992-09-01|Variable size pipe connector
    SE458302B|1989-03-13|DEVICE FOR ASTADDOM A CUTTING CONNECTION BETWEEN TWO METALLIC PIPES BY EXPLOSION WELDING IN A SURROUNDING DESIRED MEDIUM LIKE THE WATER
    GB2204932A|1988-11-23|Flexible composite hose
    EP0353982A3|1991-01-16|Apparatus for forming plastics coated tube
    EP0794375A3|1998-09-30|Sealing sleeve for pipes
    US4113814A|1978-09-12|Method for producing special pipes having longitudinally extending diaphragm partitions
    CA1054646A|1979-05-15|Pipe connection
    JP2002130541A|2002-05-09|Sealing method and equipment
    FI86523B|1992-05-29|PLASTFASTHAOLLNINGSRING FOER AOSTADKOMMANDE AV FOERBAND MELLAN ROERKROPP OCH TAETNINGSDEL.
    US3357591A|1967-12-12|Hydropneumatic tank float
    JPS5828313A|1983-02-19|Connection of hume pipe
    JPH06221482A|1994-08-09|Structure of hose
    GB2022745A|1979-12-19|Improvements in or Relating to Connections to Flexible Rubber Hoses
    CA1170686A|1984-07-10|Expansion coupling for large diameter plastic pipes
    JP3078656B2|2000-08-21|Method for forming seal of centrifugally formed concrete pipe collar
    同族专利:
    公开号 | 公开日
    FR2477469A1|1981-09-11|
    AT372648B|1983-10-25|
    ATA61781A|1983-03-15|
    IT8120183D0|1981-03-06|
    YU37881A|1983-12-31|
    PL229519A1|1981-09-18|
    GB2071234A|1981-09-16|
    DD156730A5|1982-09-15|
    GB2071234B|1984-02-08|
    US4386996A|1983-06-07|
    CA1152276A|1983-08-23|
    PL128642B1|1984-02-29|
    IT1135647B|1986-08-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB651634A|1948-11-04|1951-04-04|British Insulated Callenders|Improvements relating to sealing glands|
    US2825589A|1954-10-18|1958-03-04|British Insulated Callenders|Sealing glands|
    US2956305A|1955-08-25|1960-10-18|Osnabrucker Kupfer Und Drahtwe|Corrugated protecting sheath on a corrugated cable sheath, process and apparatus for its producing|
    GB1291880A|1969-12-09|1972-10-04|British Insulated Callenders|Improvements in or relating to the manufacture of insulated electric cables|
    CH508843A|1970-05-11|1971-06-15|Schoch Wernecke Ag|Method and system for applying a protective layer to a hose, in particular a fire hose|
    DE2121145C3|1971-04-29|1974-12-12|Jakob 3538 Niedermarsberg Eschbach|Method and device for producing a fabric hose with a plastic outer jacket and, if necessary, an inner jacket, in particular a fire hose|
    JPS5146530B2|1972-08-31|1976-12-09|
    US4043722A|1975-05-09|1977-08-23|Reynolds Metals Company|Apparatus for heat curing electrical insulation provided on a central electrical conductor of an electrical cable|
    US4041198A|1975-10-01|1977-08-09|General Steel Industries, Inc.|Apparatus and method for forming water stops on insulated pipe|
    GB1591345A|1977-03-21|1981-06-17|Ici Ltd|Cooling tubular film|FR2577466B1|1985-02-21|1989-09-22|Ashimori Ind Co Ltd|COATING TUBULAR MATERIAL BASED ON SYNTHETIC RESINS, MANUFACTURING METHOD AND APPARATUS|
    US5178902A|1990-12-21|1993-01-12|Shaw Industries Ltd.|High performance composite coating|
    WO2003023791A1|2001-09-10|2003-03-20|Pirelli & C. S.P.A.|Extrusion method and apparatus for producing a cable|
    FI115156B|2002-07-26|2005-03-15|Reijo Lehtinen|The seal structure|
    US7988438B2|2008-02-11|2011-08-02|Advanced Drainage Systems, Inc.|Extrusion die vacuum seals|
    DE102012106035A1|2012-07-05|2014-01-09|Kraussmaffei Technologies Gmbh|Seal for use in an extrusion device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3009285|1980-03-07|
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