Method in manufacturing a heat insulated tube and a device in extruders
for manufacturing the tube
    1.
    发明授权
    Method in manufacturing a heat insulated tube and a device in extruders for manufacturing the tube 失效
    用于制造隔热管的方法和用于制造管的挤出机中的装置

    公开(公告)号:US4929409A

    公开(公告)日:1990-05-29

    申请号:US307196

    申请日:1989-02-03

    摘要: Method in manufacturing a heat insulated tube includes a tube (17) for conducting fluid and a sheath (12) enclosing said tube, a heat insulating material (15) being disposed between the fluid tube and the sheath. The sheath is being extruded in an angle extruder die (10) while the fluid tube and the heat insulating material enclosing said tube are being fed axially through the angle extruder die as the sheath is being extruded around the heat insulating material. Then the sheath (12) extruded from the angle extruder die is kept spaced from the heat insulating material (15) enclosing the fluid tube (17), over an initial length of the axial movement thereof up to chains of chill molds (13) for imparting to the sheath a corrugated shape by forming the sheath against the chains of chill molds under the influence of negative pressure. The invention also relates to a device in extruders having an angle extruder die (10) for the manufacture of the heat insulated tube. wherein a sleeve (20) is provided in the angle extruder die, said sleeve defining a passage for the heat insulating material (15) and the fluid tube (17) enclosed by said material, from the angle extruder die up to the chains of chill molds (13).

    摘要翻译: 制造隔热管的方法包括用于导电流体的管(17)和封闭所述管的护套(12),设置在流体管和护套之间的隔热材料(15)。 鞘被挤出在角度挤出机模具(10)中,同时围绕绝热材料挤压护套时,流体管和围绕所述管的绝热材料被轴向地供给通过角度挤出机模具。 然后从角挤出机模头挤出的护套(12)与封闭流体管(17)的绝热材料(15)保持在其轴向运动的初始长度上,直到冷却模具链(13),用于 通过在负压的影响下通过在冷却模具链上形成护套来赋予护套波纹形状。 本发明还涉及一种具有用于制造隔热管的角度挤出机模具(10)的挤出机中的装置。 其中套筒(20)设置在所述角度挤出机模具中,所述套筒限定用于隔热材料(15)和所述材料包围的流体管(17)的通道,从角度挤出机模头到冷却链 模具(13)。

    Method and apparatus for manufacturing ribbed pipe
    2.
    发明授权
    Method and apparatus for manufacturing ribbed pipe 失效
    制造胶管的方法和装置

    公开(公告)号:US5139730A

    公开(公告)日:1992-08-18

    申请号:US679014

    申请日:1991-05-02

    摘要: The invention relates to a method and apparatus for manufacturing ribbed piping, wherein a formable mass in a plastic state is extruded into a substantially cylindrical forming space of a corrugator, the forming space being delimited by forming molds movable in the production direction of the apparatus and having grooves on the inner surface thereof for forming rib flanges. A stationary kernel portion of a mandrel cools the interior surface of the piping and extends beyond the forming space constituted by the forming molds of the corrugator.

    摘要翻译: PCT No.PCT / FI90 / 00249 Sec。 371日期1991年5月2日 102(e)日期1991年5月2日PCT提交1990年10月23日PCT公布。 出版物WO91 / 06417 日期1991年5月16日本发明涉及一种用于制造肋状管道的方法和装置,其中塑性状态下的可成形块体被挤压成瓦楞机的基本上圆柱形的成形空间,该成形空间通过在 该装置的生产方向并且在其内表面上具有用于形成肋凸缘的凹槽。 心轴的固定内核部分冷却管道的内表面并延伸超过由波纹机的成型模具构成的成形空间。

    Sizing apparatus
    3.
    发明授权
    Sizing apparatus 失效
    尺寸设备

    公开(公告)号:US6050800A

    公开(公告)日:2000-04-18

    申请号:US29690

    申请日:1998-03-13

    IPC分类号: B29C47/90 B29C47/94

    摘要: A sizing sleeve for controlling the diameter of plastic tube includes pressurized sizing sleeve portions in which fluid is injected under pressure about the tube circumference to form a lubricating layer. Drainage zones axially separate and isolate adjacent pressurized portions to allow independent temperature and pressure control. Each pressurized portion has flow stabilizer reducing variations in flow responsive to changes in the lubricating layer pressure. The flow stabilizer may comprise a high pressure fluid source and high pressure drop constrictor comprising fine apertures, which may be formed as grooves milled into end surface of abutting sizing sleeve segments.

    摘要翻译: PCT No.PCT / AU96 / 00585 Sec。 371日期1998年3月13日 102(e)1998年3月13日PCT PCT 1996年9月16日PCT公布。 公开号WO97 / 10093 日期1997年3月20日用于控制塑料管直径的定型套筒包括加压上浆套筒部分,其中流体在压力下围绕管圆周注入以形成润滑层。 排水区域轴向分离并隔离相邻的加压部分,以实现独立的温度和压力控制。 每个加压部分具有响应于润滑层压力变化的减少流量变化的流动稳定器。 流动稳定器可以包括高压流体源和包括细孔的高压降压缩机,其可以形成为铣削到邻接的施胶套筒段的端表面中的槽。

    Apparatus for manufacturing ribbed pipes
    4.
    发明授权
    Apparatus for manufacturing ribbed pipes 失效
    用于制造肋管的设备

    公开(公告)号:US5340299A

    公开(公告)日:1994-08-23

    申请号:US778171

    申请日:1992-03-12

    摘要: An apparatus for manufacturing from a mouldable material a pipe having ribs on its outer surface and a smooth inner surface has a core including a shaft, a conically widening mandrel located downstream of the shaft in a direction of production and a kernel having an initial zone and an end zone respectively of substantially uniform diameters successively disposed downstream of the mandrel. An extrusion sleeve surrounds the core and forms with the core a nozzle for the material. The extrusion sleeve has a first end face located upstream of the kernel. Moulds encase the extrusion sleeve and the core, the moulds being movable along endless paths and having grooves on inner surfaces for forming the ribs on the pipe. A heater heats the initial zone of the kernel, the initial zone of the kernel being cylindrical. A first cooler cools the end zone of the kernel. A second end face of an upstream outset of the end zone of the kernel conically widens in the direction of production from a smallest diameter substantially corresponding to the diameter of the initial zone to a largest diameter.

    摘要翻译: PCT No.PCT / FI90 / 00178 Sec。 371日期:1992年3月12日 102(e)1992年3月12日PCT PCT 1990年7月5日PCT公布。 出版物WO91 / 00797 日本1991年1月24日。一种用可制造材料制造的设备,其外表面上具有肋条和光滑的内表面的管具有包括轴的心轴,位于轴的生产方向下游的锥形加宽心轴, 具有分别具有基本上均匀直径的初始区域和端部区域的核,其连续地设置在心轴的下游。 挤压套筒围绕芯部并且与芯部形成用于材料的喷嘴。 挤出套筒具有位于内核上游的第一端面。 模具包住挤出套管和芯部,模具可沿着环形路径移动并且在内表面上具有凹槽以在管上形成肋条。 加热器加热核的初始区,核的初始区为圆柱形。 第一个冷却器冷却内核的结束区域。 核的端部区域的上游开始的第二端面从基本上对应于初始区域的直径到最大直径的最小直径在生产方向上圆锥形地变宽。