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    • 2. 发明申请
    • A METHOD OF SOCKETING A PIPE
    • 管道管的方法
    • WO1997010942A1
    • 1997-03-27
    • PCT/SE1996001171
    • 1996-09-20
    • UPONOR B.V.VINIDEX TUBEMAKERS PTY. LTD.JOHANSSON, MatsJÄRVENKYLÄ, Jyri
    • UPONOR B.V.VINIDEX TUBEMAKERS PTY. LTD.
    • B29C57/02
    • B29C57/02B29C65/14B29C65/1412B29C2035/0822B29K2023/0691B29K2995/005B29L2009/00F16L55/1654
    • A method of socketing a pipe of oriented plastic having an annular groove inside the socket. An end portion (15) of the pipe is pushed onto a cylindrical mandrel element (11) and the region (l1) of the end portion at the opening thereof where the groove is to be located is heated to a temperature above the glass transition temperature of amorphous plastic and the crystalline melting point of crystalline plastic, respectively. The rest of the end portion is maintained at a temperature below the glass transition temperature or the crystalline melting point, respectively. The end portion (15) when said region is at a temperature above the glass transition temperature or the crystalline melting point, respectively, is pushed onto a second mandrel element (13) axially aligned with said first mandrel element the bottom portion of the socket being formed by said second mandrel element (13). The rest of the end portion is expanded to form the bottom portion of the socket. The end portion of the pipe is cooled and is then withdrawn from the mandrel elements.
    • 一种在插座内插入具有环形槽的取向塑料管的方法。 管道的端部(15)被推到圆柱形心轴元件(11)上,并且在其所在的槽的开口处的端部区域(11)被加热到高于玻璃化转变温度 分别为非晶态塑料和晶体结晶熔点。 端部的其余部分分别保持在低于玻璃化转变温度或结晶熔点的温度。 当所述区域处于高于玻璃化转变温度或结晶熔点的温度时的端部(15)被推到与所述第一心轴元件轴向对齐的第二心轴元件(13)上,所述插座的底部为 由所述第二心轴元件(13)形成。 端部的其余部分被扩展以形成插座的底部。 管的端部被冷却,然后从心轴元件中取出。