METAL PIPE DRAWING APPARATUS IN COMPOSITE PIPE MANUFACTURING SYSTEM

摘要

PURPOSE: A metal pipe drawing apparatus is provided to achieve a reduced process and manufacturing cost by eliminating the necessity of supplying drawing oil during a process of manufacturing composite pipe. CONSTITUTION: An apparatus for drawing a metal pipe by pulling the metal pipe using a caterpillar so as to allow the metal pipe to pass through a drawing member and to be tightly coupled to a periphery of an inner plastic pipe, the apparatus comprising a first drawing member for permitting drawing rolls(102) facing with each other at a rotation axis(101) to maintain a spacing according to a rotation of an adjusting shaft(103) such that the metal pipe passes through and is elongated at the periphery of the inner plastic pipe, a second drawing member for permitting drawing rolls(202) facing with each other at a rotation axis(201) to maintain a spacing according to a rotation of an adjusting shaft(203) such that the metal pipe elongated by the first drawing member is elongated again, and a third drawing member for permitting drawing rolls(302) facing with each other at a rotation axis(301) to maintain a spacing according to a rotation of an adjusting shaft(303) such that the metal pipe elongated by the second drawing member is elongated again. The first drawing member and the third drawing member are arranged to be perpendicular to the second drawing member.