• 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:
    An apparatus for producing helically wound double-walled fused thermoplastic pipes, corrugated outside and smooth inside. The apparatus includes extruder means forming two bands of a thermoplastic material, a former shaping the corrugated configuration of and helically winding the first extruded band, a cooled element pressing the second band to the inside of the corrugations and having passages communicating with the second band and with a vacuum means.
    公开号:SU1530087A3
    申请号:SU874202720
    申请日:1987-06-03
    公开日:1989-12-15
    发明作者:А.А.Лупке Манфред
    申请人:Lupke Manfred Arno Alfred；
    IPC主号:
    专利说明:

    The invention relates to apparatus for producing spiral-wound, double-walled thermoplastic pipes, having a corrugated outer sheath and a smooth inner sheath welded to one another and can be used in chemical industry.
    The purpose of the invention is to improve the quality of pipes by ensuring the smoothness of the surface of its inner shell.
    Figure 1 presents the proposed device, side view; figure 2 - section aa in figure 1.
    The apparatus for producing spiral-wound double-walled thermoplastic pipes, having a corrugated outer shell and a smooth inner shell, contains one or two (depending on the materials for the shells) extrusion means (not shown), a molding device 1 and a cooled pressing element 2.
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    The extrusion means communicates with the first extrusion head 3 located above the molding device 1 (along the plastic flow) and with the second extrusion head 4 located below the molding device (along this stream). The heads 3 and 4 have extrusion holes 5 and 6 for the extrusion of the first and second strips of thermoplastic material, respectively, for forming the outer and inner shells of the pipe.
    The molding device 1 has a side surface for receiving the first extruded tape and a device for forming a corrugated configuration for spiral winding into the outer corrugated shell of the produced double wall pipe and feeding to the inner surface of the outer shell of the second tape
    The second extrusion head 4 communicates with its extrusion means by means of an elongated conduit 7 mounted inside the molding device 1, along which the extrusion openings of the heads 3 and 4 are located.
    The cooled pressing element 2 corresponds to the inner shell of the pipe, interacts with the second tape as it enters from the second head 4, and presses this tape against the outer shell to weld them. In order to maintain the ribbon in conjunction with the side surface of the pressing element 2, channels 8 are provided therein, communicating with vacuum means (not shown). The outputs of the channels 8 are located on the side facing the second tape for communication with it.
    Element 2 is cooled by cooling agent flowing through it from communication lines 9 and 10.
    The molding device 1 is made in the form of a set of molds 11 moving along a helical spiral and forming a rotating forming surface moving progressively in the axial direction. At the end (downstream) of the molding device 1, the mold 11 is drawn radially inward, then turned over and move opposite to the flow inside the molding device 1. At the beginning of the device 1 (downstream) the mold 11 is turned over0
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    c and are fed to form said helical surface.
    A device for forming a corrugated configuration is intended for spiral winding of the first tape 12 into the outer corrugated casing 13 of the pipe and feeding to the inner surface of the outer casing 13 of the second tape 14 twisted spirally into the inner smooth casing 15 of the pipe. The molding device 1 is located between the extrusion heads 3 and 4 in the flow direction of the first 3 and countercurrently the second 4 heads.
    During operation of the apparatus, the head 3 produces a tape 12 of thermoplastic material, which flows to the countercurrent end of the forming device 1, obtains a corrugated configuration corresponding to the lateral surface of the forming device 1, and is spirally wound to form an outer corrugated sheath 13. The head 4 extrudes the tape 14, passing between the pressing element 2 and the outer casing 13. The tape 14 is wound on the inside of the already formed corrugated casing 13 as it is rotated and axially transverse. escheni last, which provides welding the inside of the shell 15 and the inner surface of the corrugations at their smallest diameter. The vacuum maintained between the belt 14 and the pressing element 2 does not allow the belt 14 to deviate from the element before it is cured. Due to this, the extruded tape 14 of the inner shell 15 does not depart from the pressing element 2 until it stabilizes and has a uniform change in the internal pressure. As a result, the smoothness of the inner surface of the produced pipe is ensured.
    The proposed apparatus makes it possible to prevent such defects of the inner tube as shrink marks (deepening of the surface), wrinkling and wrinkles having the appearance of a wave.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    The apparatus for the production of spiral-shaped double-walled thermoplastic pipes, having a corrugated outer sheath welded to one another and a smooth inner sheath, containing extrusion
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    类似技术:
    公开号 | 公开日 | 专利标题
    US3677676A|1972-07-18|Apparatus for forming plastic tubing having a smooth inner wall and a corrugated outer wall
    US3996323A|1976-12-07|Method of producing double-walled synthetic plastics tubes having an outer wall with annular or helical corrugations
    US4689174A|1987-08-25|Producing double-walled helically wound thermoplastic pipe with a corrugated cutter wall and a smooth inner wall
    FI85413C|1992-04-10|Method of manufacture of heat insulated pipe and device for extruders for manufacture of pipe
    SU1530087A3|1989-12-15|Apparatus for production of spiral-coiled double-wall thermoplastic pipes
    US4466854A|1984-08-21|Method and device for producing a helically wound tube
    US3526692A|1970-09-01|Manufacture of wire reinforced plastic pipe
    GB1453580A|1976-10-27|Plastics drain pipes and apparatus for manufacturing same
    US3613162A|1971-10-19|Apparatus for the formation of helical plastic pipe
    US7517210B1|2009-04-14|Apparatus for the manufacture of compound pipes
    US5051081A|1991-09-24|Apparatus for producing spiral pipes with rib
    US4108703A|1978-08-22|Method and apparatus for producing double-walled thermoplastic pipe
    EP0008689B1|1983-03-30|A method and an arrangement for the manufacture of a material web of foamed thermoplastics
    US3290727A|1966-12-06|Apparatus for forming composite elements
    US3936265A|1976-02-03|Manufacturing clear plastic lids
    JPH10202763A|1998-08-04|Method and apparatus for manufacturing cover-corrugated pipe equipped with a medium pipe inside
    SU749674A1|1980-07-25|Apparatus for making fabric-plated thermoplastic tubes
    SU143226A1|1961-11-30|Method of making thermoplastic pipes
    JP3516914B2|2004-04-05|Double corrugated pipe manufacturing equipment
    KR100533945B1|2005-12-07|Reinforced synthetic resin pipe and manufacturing method
    WO1997022457A1|1997-06-26|Apparatus for shaping and cooling corrugated plastic pipes
    SU1712183A1|1992-02-15|Apparatus for making double-wall plastic pipes
    KR910016460A|1991-11-05|Apparatus for manufacturing metal-plastic composite tube
    CA1121124A|1982-04-06|Method for manufacturing corrugated tube
    JPH08258177A|1996-10-08|Synthetic resin pipe and production thereof
    同族专利:
    公开号 | 公开日
    EP0248368A2|1987-12-09|
    NO872330D0|1987-06-03|
    DE248368T1|1988-06-30|
    CN87103629A|1987-12-16|
    CA1226710A|1987-09-15|
    KR880000731A|1988-03-29|
    AU7382387A|1987-12-10|
    JPS633939A|1988-01-08|
    EP0248368A3|1988-10-19|
    NO872330L|1987-12-07|
    CN1008710B|1990-07-11|
    US4731138A|1988-03-15|
    KR900007356B1|1990-10-08|
    AU583733B2|1989-05-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2527783C2|2009-01-29|2014-09-10|Бругг Рор Аг Холдинг|Production of heat-insulated pipeline, pipeline and plant for pipeline production|NL6803115A|1968-03-05|1969-09-09|
    JPS4829768B1|1970-03-16|1973-09-13|
    DE2357993C2|1973-11-21|1983-11-17|Reifenhäuser KG, 5210 Troisdorf|Device for the internal calibration of hollow profiles made of thermoplastic material|
    FR70398E|1974-03-22|1959-04-06|Electronique & Physique|Improvements in television and cinematography cameras|
    NZ208302A|1983-06-08|1986-04-11|Toyo Kagaku Kk|Manufacturing corrugated plastics tubes with smooth inner wall|
    CA1194662A|1983-07-12|1985-10-08|Lupke, Manfred A. A.|Producing double-walled helically wound thermoplastic pipe|WO1989003172A1|1987-10-09|1989-04-20|Townsend Controls Pty. Ltd.|Irrigation tape and method of producing same|
    US5531583A|1993-04-15|1996-07-02|Cullom Machine Tool & Die, Inc.|Vacuum mold blocks with cooling for corrugated tubing|
    US5848223A|1994-05-27|1998-12-08|Steward Plastics, Inc.|Double-walled flexible tubing product with helical support bead and heating conductor and apparatus and method for making|
    WO2006088852A1|2005-02-14|2006-08-24|Panduit Corp.|Enhanced communication cable systems and methods|
    KR101011213B1|2007-12-21|2011-01-26|지아노니 두발|Heat exchanger manufacturing method|
    CN101844398A|2010-05-15|2010-09-29|杨荣|Plastic double-wall winding corrugated pipe forming device|
    CN110757854B|2019-11-01|2021-05-25|重庆市一龙管道有限公司|PE double-wall corrugated pipe processing equipment|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CA000510772A|CA1226710A|1986-06-04|1986-06-04|Apparatus for producing double-walled corrugated pipes|
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