Adjustable horn for spiral pipe forming machine

Details Adjustable horn for spiral pipe forming machine Adjustable horn for spiral pipe forming machine

B - Operations, Transporting

21

B

B21B 25/02 (2006.01) B21B 19/06 (2006.01)

Patent

CA 2532531

An adjustable horn or mandrel-for a spiral pipe forming machine. Such machines are made for continuously forming metal pipe from an elongated sheet of metal where the sheet is curled into adjacent helical convolutions in a multiple roll pipe forming head. The head includes a mandrel, and in accordance with the invention a mandrel mount is provided for vertical adjustment of the mandrel. The mandrel mount has opposite side supports sandwiching the mandrel and a motor mounted for raising and lowering the mandrel between the side supports. Raising and lowering is accomplished via a pair lead screws secured to the mandrel, each having a gear threadedly engaged thereon and which is driven by the motor. The mandrel is also horizontally adjustable.

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