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1. 发明公开

EP0384625A1 Apparatus for forming spiral pipe 失效
标题翻译： Vorrichtung zum Formen von Schraubennahtrohren。
公开(公告)号：EP0384625A1
公开(公告)日：1990-08-29
申请号：EP90301443.9
申请日：1990-02-12
申请人： Spiral-Helix Inc.
发明人： Castricum, Wilhelmus P. H.
IPC分类号： B21C37/12
CPC分类号： B21C37/127 , B21C37/124 , B21C37/157 , B26D1/60 , B26D3/16 , Y10T82/16131 , Y10T82/16639
摘要： An apparatus for forming and slitting spirally formed pipe, particularly spiral pipes having a diameter of approximately one inch or less, is disclosed. The pipe forming apparatus includes an enclosed forming head (29) and a mandrel (60). A continuous strip of metal (15) is driven around the mandrel (60) and inside a lateral bore (30) in the forming head (29) in a helical manner. First and second rollers (37,39) mounted in the forming head partially form a spiral lockseam. A third roller (52) mounted in the upper portion of the forming head closes the spiral lockseam. The mandrel (60) is both rotatable and pivotable. The device for slitting the spiral pipe into sections includes a first knife (80) that is positioned inside the spiral pipe. This knife is mounted at the end of a rotatable boom (81), that extends through the mandrel and is positioned inside of the spiral pipe. A second rotatable knife (110) is positioned outside of the pipe. A rotatable support roller (130) is also positioned outside of the pipe, and opposite the outer knife. To cut the pipe, the outer knife punctures the pipe and overlaps the inner knife, and the support roller abuts the opposite side of the pipe. The inner and outer knives and the support roller move axially with the pipe. As the pipe continues to rotate, it is completely severed.
摘要翻译：公开了一种用于成形和切割螺旋形管道的装置，特别是具有大约一英寸或更小直径的螺旋管。管形成装置包括封闭成形头（29）和心轴（60）。连续的金属条（15）以螺旋方式围绕心轴（60）驱动并且在成形头（29）内的侧向孔（30）内。安装在成形头部的第一和第二辊（37,39）部分地形成螺旋锁缝。安装在成型头的上部的第三辊（52）封闭螺旋锁缝。心轴（60）既可旋转又可枢转。用于将螺旋管分切成部分的装置包括位于螺旋管内的第一刀（80）。该刀安装在可旋转的臂（81）的端部，其可延伸穿过心轴并位于螺旋管的内部。第二可旋转刀（110）位于管外。旋转的支撑辊（130）也位于管的外侧，并且与外刀相对。为了切割管，外刀刺穿管并与内刀重叠，并且支撑辊邻接管的相对侧。内外刀和支撑辊与管轴向移动。当管道继续旋转时，它被完全切断。

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