• 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:
    A socket of a thermoplastic pipe is provided with an internal groove by subjecting the tube to an upsetting action and simultaneously inflating the tube by an inner pressure. Subsequently a moulding ring is expanded and the tube is shrunk onto the expanded ring by cooling. Before shrinkage the inner diameter of the bottom of the groove is at least equal and preferably greater than the outer diameter of the moulding ring in expanded form.
    公开号:SU736865A3
    申请号:SU772559704
    申请日:1977-12-27
    公开日:1980-05-25
    发明作者:Хердер Корнелис；Франсискус Теодорус Вильхельмус；Олдеран Каролус
    申请人:Вавин Б.В. (Фирма)；
    IPC主号:
    专利说明:

    However, in this method it is impossible to obtain a smooth Canolaak surface bypassing the surface. This is explained by the fact that the mass materials have nonoperation, therefore during caddue some parts, the walls are subjected to naddu, and others are slower, resulting in irregularity internal riosepxHOCTH grooves. In addition, when the pipe is cooled, warping of the groove surface may occur, which also; lowers it. it is difficult and difficult to install an ultrasonic ring,
    A whole of the invention is to improve the quality of the inner surface of the groove of the paste tube.
    To achieve this goal in the method of manufacturing an annular tube on a mass mass tube, which includes the operations of pushing the end of the heated tube onto the forming rod, followed by sweeping the forming area with the mold, creating an overpressure of the medium in the inner section (fopN eMOft of the pipe with simultaneous sedimentation of the moldable area and cooling Before the molded section, according to the invention, before cooling the groove into its cavity, a rigid ring is inserted as recently as a joint with its surface, removing it from the section After cooling,
    In addition, the excess pressure of the medium is pulled until the rigid ring E is fully inserted into the groove.
    With such an embodiment of the method, the inner surface of the annular groove is provided to be smooth, since when the pipe is cooled, the inner surface of the groove fits a rigid ring that prevents this surface from warping.
    In order to perform the method of manufacturing an annular groove on a plastic pipe, a device has been proposed that comprises a mold with a recess in which there is an extendable ring made in separate sectors with a conical bearing surface each, expandable axially movable and located inside the rod. a conical surface interacting with the supporting surface of the sectors, the drive is moved by the expanding element, the wrap-around shape with an annular cavity under the groove of the pipe, in which, according to the invention, channels for supplying compressed media to the recess are made in the rod. .
    In addition, the device is equipped with two glasses coaxially mounted towards each other, the inside of which is a razimna element, made in the form of
    A crown of mutually installed sleeves are the sleeves of which alternate conical protrusions and grooves for the passage of conical protrusions of the opposite sleeve, and each of their southern sectors are connected by means of a spring with the opposite sleeve and interact with their conical surface with the conical protrusion of the opposite sleeve.
    In addition, the device is equipped with an upsetting element made movably in the axial direction on the hub stem with a notch on its end part and driving its movement, wherein the form is made integral and its one part is made movably mounted. axial direction on the core of the sleeve, which is provided with a drive for its movement, and in the form there are made channels for the inlet of the coolant.
    Fig; 1 shows a device for producing an annular groove on a plastic pipe, a slit; Fig. 2 shows various stages of deformation of a portion of a plastic pipe during the formation of the inner annular groove; in fig. 3, 4 shows fragments of the ring structure, - in FIG. 5 shows the device, section AA on fi 4. .
    A device for manufacturing an annular groove on a plastic pipe (see Fig. 1) contains a forming rod 1 with a notch 2 in which there is an extendable ring made in the form of separate sectors 3, 4 with a conical bearing surface each expandable movable in the axial direction and placed inside the rod 1, an element with a conical surface that is immobile with the supporting surface of the sectors 3, 4 is a drive for moving the races of the ele- gent (not shown), covering the rod 1 form 5 with an annular cavity b under the groove t rubies.
    . In the rod 1, the channels 7 are made to supply the compressed medium to the undercut 2, while the device is equipped with an upsetting element made movably axially mounted on the rod 1 of the sleeve 8 with a recess 9 on its annular part and driving it (not like shown).
    The form 5 of the device is made integral, and its single part is made movably axially mounted on the rod 1 of the sleeve 10, which is provided with a drive for moving it (on a dash, not shown). To connect the sleeves 8 and 10 with the drive, the sliders 11 serve, and to limit their movement
    the end sensor 12. In the form 5, the channels 13 for supplying the coolant. An auxiliary unit 14 is used to cool the heated part of the plastic pipe, which supplies the cooling medium.
    The device is also equipped with two stanchions 15, 16 coaxially mounted towards each other, and an expanding element is installed inside the cavity, made in the form of two bushes 17, 18 installed towards each other (see Fig. 3-5), each of which has alternating between the conical protrusions and grooves dp of the passage of the conical protrusions of the opposite sleeve, and each of the adjacent sectors 3, 4 is connected by means of the respective springs 19, 20 with the opposite corresponding sleeve 17, 18 and interacts with its conical surface with the end the protrusion of the opposite sleeve 17, 18.
    The method of manufacturing the end groove on the plastic pipe is carried out in the process of operating the device.
    The end of the heated-to-thermoplastic state of the pipe 21 is pushed onto the forming core 1 (FIG.). At the same time, the end of the tube 21 is deformed along the profile of the rod 1, so that the end of the pipe 21 enters the recess 9 of the sleeve 8, which in its original position closes the recess 2 rod 1 (see fig. 2a). From above, the end of the pipe 21 covers a part of the sleeve 10. Then, as the pipe 21 is pushed over the rod 1, the sleeves 8 and 10 are pushed aside until they stop at the end sensor 12 (see Fig. 26). an annular groove is formed by creating an overpressure of the medium in the inner portion of the molded tube 21 while simultaneously forming the molded portion (see Fig. 2b2c). For this, compressed medium is fed through the channels 7, and the sleeves 8 and 10 are moved to the right up to the stop of the sleeve 10 in the mold 5. During the operation of settling the pipe 21, it is held by the support plate 22 (see Fig. 1).
    After forming the annular groove, a rigid ring is inserted into its cavity as soon as it touches its surface (see Fig. 2c). To do this, move the sleeve 18 of the expansion element to the right (see Fig. 3-5), while the sleeves 17 and 18 approach each other, and their alternating protrusions extend into the corresponding alternating grooves, so that the conical projections act on the conical surfaces of alternating sectors 3 and 4, which I raise.
    upwards and into the annular groove of the pipe. When sectors 3 and 4 move upwards, they close with their sides, so. there is a single rigid ring with no pro. thieves between the ends of sectors 3 and 4, which prevents the material from flowing between sectors 3 and 4. Overpressure of the medium is maintained until the rigid ring c is fully inserted. groove.
    o
    After the introduction of the hard ring. the groove is made to cool the formed section of pipe 21. To do this, a cooling medium is supplied through the channels 13 of form 5 and the installation 14 is also used, which supplies the cooling medium to the pipe 21,
    When cooling the 21, the inner surface of the annular groove rests on a rigid ring, which prevents the surface from warping and provides a smooth inner surface of the groove.
    After the final cooling, the plastic tube 21 is rigidly removed from the product. For this
    5 move the sleeve 18 to the right and the springs 19 and 20 return the sectors 3 and 4 to their original position. Then the molded product is removed from the rod .1 and the production cycle is repeated.
    The use of the method of manufacturing an annular groove on a plastic pipe and a device for its implementation will improve the quality of the inner surface of the groove, which in turn, in the future, will facilitate the installation of the sealing ring in it.
    /.
    权利要求:
    Claims (3)
    [1]
    Invention Formula
    0
    1. A method of manufacturing an annular groove on a plastic pipe, which includes the operations of pulling the end of the heated pipe onto the forming core and then extending it to form-.
    5, form an overpressure of the medium in the inner section of the forming pipe, while simultaneously forming the forming area and cooling the formed section, characterized in that, in order to improve the quality of the internal surface of the groove, before cooling the groove into its cavity, contact with its surface is a rigid ring removed from the product after cooling.
    2. A method according to claim 1, characterized in that the overpressure of the medium is maintained until the rigid ring is completely inserted into the groove,
    3. Device for performing the method according to claims. I and 2, containing a forming rebar with a recess, in which
    the swarm is located sliding ring, filled in the form of separate sectors with a conical bearing surface each, expandable movable
    1g; The element and the element placed inside the rod with a conical surface interacting with the supporting surface of the sectors drive the movement of the expanding element covering the rod shape with an annular cavity under the groove efej, which has channels for supplying the compressed medium to groove,. 4, the device according to p. 3, that is, with the fact that it is provided with two coaxially mounted gables. towards each other with glasses, inside the cavity of which an expanding element is installed, made in the form of two plugs installed towards each other, each of which HJuieeT series 0111 is conical protrusions and grooves for passage
     cho ical. the protrusions are opposite to the middle sleeve, and each of the adjacent sectors is connected by means of a spring c. opposite sleeve and interacts with its conical surface with a conical protrusion of the opposite sleeve.
    5. The device according to claim 3, which is equipped with an upsetting element made as mounted axially on the core of the sleeve with a notch on its end part and driving it to move.
    6. The device according to claim 3, characterized in that the form is made a composite and its one part is made as mounted in the axial direction in the shaft of the sleeve, which is provided with a drive for moving it,
    7. The device according to claim 3, characterized in that the channels in the form are made for the supply of a coolant.
    Sources of information 0 taken into account in the examination
    1. The author's certificate of the USSR 466111, CL, B 29 C 17/00, 1975.
    2. US patent 3484900, CL 425-393, 1970,
    [2]
    3. USSR author's certificate number 596461, cl. B 29 C 17/07, 1976 (prototype),
    [3]
    AND
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    同族专利:
    公开号 | 公开日
    DE2758188B2|1980-05-22|
    FR2395822B1|1980-08-01|
    FR2395822A1|1979-01-26|
    AU3194377A|1979-06-28|
    NL7707299A|1979-01-03|
    JPS5416578A|1979-02-07|
    IN148987B|1981-08-08|
    US4395379A|1983-07-26|
    BR7708709A|1979-07-17|
    JPS5518607B2|1980-05-20|
    SE425226B|1982-09-13|
    GB1596563A|1981-08-26|
    DK582577A|1978-12-31|
    SE7714829L|1978-12-31|
    DE2758188A1|1979-01-04|
    AU509716B2|1980-05-22|
    DE2758188C3|1981-01-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2365637A|1942-08-28|1944-12-19|Rohm & Haas|Method of shaping thermoplastic domes|
    GB1048888A|1964-08-14|1966-11-23|Ilford Ltd|Cyanine dyestuffs|
    US3484900A|1966-05-25|1969-12-23|Chemidus Plastics Ltd|Tubing and piping of thermoplastics material|
    DE2200874A1|1971-07-19|1973-08-30|Aristovoulos George Petzetakis|METHOD AND DEVICE FOR ATTACHING INTERNAL CALIBRATED SOCKET SOCKETS WITH SEALING SEAL TO PIPES MADE OF THERMOPLASTIC PLASTIC|
    NL156956B|1972-04-19|1978-06-15|Wavin Bv|METHOD AND APPARATUS FOR FORMING A PLASTIC TUBE WITH A CIRCULAR GROOVE WITH THICKNED MOF END.|
    AT328177B|1973-11-23|1976-03-10|Osterreichische Symalen Ges M|DEVICE FOR MOLDING SLEEVES|
    JPS5440111B2|1975-03-12|1979-12-01|
    AU498702B2|1975-03-12|1979-03-22|Sekisui Kagaku Kogyo Kabushiki Kaisha|Forming an annular groove ina thermoplastic pipe|
    GB1516576A|1976-05-03|1978-07-05|Dewandre Co Ltd C|Hydraulic cab tilting systems|
    US4170448A|1977-08-22|1979-10-09|Johns-Manville Corporation|Assembly for forming the bell of a bell spigot joint|IT1133374B|1980-11-14|1986-07-09|Sica Spa|MECHANICAL EXPANSION BUFFER FOR THE INTERNAL CALIBRATION OF PLASTIC TUBES IN GENERAL, IN PARTICULAR FOR THE REALIZATION OF SEATS FOR GASKETS|
    US4430052A|1982-07-12|1984-02-07|Western Plastics Corporation|Belling mandrel assembly|
    JP2775490B2|1989-10-13|1998-07-16|臼井国際産業株式会社|Bellows tube manufacturing equipment|
    SE513872C2|1994-06-03|2000-11-20|Forsheda Ab|Methods for making plastic tubing with sealing ring, including expansion and shrinkage of the tube|
    US6199592B1|1999-02-05|2001-03-13|Hancor, Inc.|Pipe structure and method of manufacture|
    US6578882B2|2000-11-10|2003-06-17|Hancor, Inc.|Corrugated pipe structure|
    FR2831852B1|2001-11-08|2005-03-11|Sai Automotive Allibert Ind|METHOD AND ASSEMBLY FOR COMPRESSION OVERLAY OF PLASTIC MATERIAL TUBULAR ELEMENT|
    US6948718B2|2003-02-03|2005-09-27|Advanced Drainage Systems, Inc.|Gasket|
    DE102005039784A1|2005-08-22|2007-03-08|Claas Fertigungstechnik Gmbh|Method and device for non-rotatably connecting a hollow shaft with a component|
    WO2009155077A2|2008-05-30|2009-12-23|Contech Construction Products Inc.|Pipe joint and related method|
    SI2368693T1|2010-03-25|2013-02-28|Sica S.P.A.|Belling machine for pipes made of thermoplastic material|
    ITRA20130026A1|2013-12-04|2014-03-05|Ipm Srl|PLASTIC DEFORMATION FOR HOT DEFORMATION OF PLASTIC TUBE GLASSES WITH RINCALCO DOUBLE FLANGE AND INDEPENDENT MOVEMENTS|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL7707299A|NL7707299A|1977-06-30|1977-06-30|METHOD AND DEVICE FOR FORMING AN INTERNAL, CIRCULAR GROOVE IN A PLASTIC TUBE PART.|
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