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公开(公告)号：US20100237533A1
公开(公告)日：2010-09-23
申请号：US12738502
申请日：2008-10-17
CPC分类号： B29C55/26 , B29C48/09 , B29C48/902 , B29C48/903 , B29C48/907 , B29C48/908 , B29C48/913 , B29C48/919
摘要： A start-up sequence for a continuous process for producing oriented plastic tube is disclosed. A variable diameter extruder (112) is started and is set to extrude a start-up diameter tube (220) which is significantly over the diameter of a pre-expansion tube diameter of the continuous process. The start-up diameter tube (220) is passed to and engaged by a first haul-off tractor (122). The start-up diameter tube (220) proceeds through to and over an upstream plug (128). The large, start-up diameter of the extruded tube (220) at start-up facilitates passage of the leading end of the start-up diameter tube (220) over a deflated, expandable portion (212) or a non-expandable portion (210) of a partly expandable plug (210, 212), depending on the arrangement of the expandable portion (212) and non-expandable portion (210). The tube is then reduced in diameter for the continuous process of diametral expansion and circumferential orientation to occur.
摘要翻译： 公开了用于生产定向塑料管的连续工艺的启动顺序。 启动可变直径挤出机（112）并将其设置为挤压明显超过连续过程的预膨胀管直径的直径的启动直径管（220）。 启动直径管（220）被传送到第一牵引牵引车（122）并与其接合。 启动直径管（220）进入到上游塞（128）上和上游塞（128）上。 在启动时，挤压管（220）的大的启动直径有助于启动直径管（220）的前端通过放气的可膨胀部分（212）或不可膨胀部分（212） 取决于可扩张部分（212）和不可扩张部分（210）的布置，部分可膨胀塞子（210,212）的一部分（210）210。 然后将管直径减小，以使连续的直径膨胀过程和周向取向发生。
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公开(公告)号：US07776248B2
公开(公告)日：2010-08-17
申请号：US11817416
申请日：2006-03-13
IPC分类号： B29C57/02
CPC分类号： B29C57/02 , F16L47/06 , Y10T403/27
摘要： A method of modifying compressive strains in formation of a pipe ring groove (16), in which a differential temperature profile is established across the pipe wall in a narrow bending locus (l3) corresponding to the ring groove position, and the material is bent to form the ring groove. The temperature differential creates a differential in elastic modulus between the inner and outer surfaces of the pipe material, modifying the strain induced in inner concave and outer convex surfaces of the ring groove during the bending step.
摘要翻译： 在形成管环槽（16）时改变压缩应变的方法，其中在对应于环槽位置的窄弯曲轨迹（13）中跨越管壁建立温差分布，并将材料弯曲成 形成环槽。 温度差在管材的内表面和外表面之间产生弹性模量的差异，改变在弯曲步骤期间在环槽的内凹和外凸表面中引起的应变。
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公开(公告)号：US20100300575A1
公开(公告)日：2010-12-02
申请号：US12857340
申请日：2010-08-16
CPC分类号： B29C57/02 , F16L47/06 , Y10T403/27
摘要： A method of modifying compressive strains in formation of a pipe ring groove (16), in which a differential temperature profile is established across the pipe wall in a narrow bending locus (l3) corresponding to the ring groove position, and the material is bent to form the ring groove. The temperature differential creates a differential in elastic modulus between the inner and outer surfaces of the pipe material, modifying the strain induced in inner concave and outer convex surfaces of the ring groove during the bending step.
摘要翻译： 在形成管环槽（16）时改变压缩应变的方法，其中在对应于环槽位置的窄弯曲轨迹（13）中跨越管壁建立温差分布，并将材料弯曲成 形成环槽。 温度差在管材的内表面和外表面之间产生弹性模量的差异，改变在弯曲步骤期间在环槽的内凹和外凸表面中引起的应变。
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公开(公告)号：US20090003926A1
公开(公告)日：2009-01-01
申请号：US11817416
申请日：2006-03-13
CPC分类号： B29C57/02 , F16L47/06 , Y10T403/27
摘要： A method of modifying compressive strains in formation of a pipe ring groove (16), in which a differential temperature profile is established across the pipe wall in a narrow bending locus (l3) corresponding to the ring groove position, and the material is bent to form the ring groove. The temperature differential creates a differential in elastic modulus between the inner and outer surfaces of the pipe material, modifying the strain induced in inner concave and outer convex surfaces of the ring groove during the bending step.
摘要翻译： 在形成管环槽（16）时改变压缩应变的方法，其中在对应于环槽位置的窄弯曲轨迹（13）中跨越管壁建立温差分布，并将材料弯曲成 形成环槽。 温度差在管材的内表面和外表面之间产生弹性模量的差异，改变在弯曲步骤期间在环槽的内凹和外凸表面中引起的应变。
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