| 摘要 |
PROBLEM TO BE SOLVED: To provide a pultrusion method of a tube and pultrusion device for the tube for surely preventing a tube to be formed from breaking before the completion of forming. SOLUTION: In the pultrusion method of the tube by which the tube M to be formed is threaded through the clearance G between the inner peripheral surface 2a of the forming hole 2 of a die 1 and the outer peripheral surface 3a of a plug 3 which is coaxially arranged in the forming hole 2 and drawn along the tube axis, before the rear end part Mb of the tube M to be formed reaches the forming hole 2 at the time of drawing, the plug 3 is moved from the forming position to the rear in the drawing direction. In this way, the rear end part Mb of the tube M to be formed is drawn in a sinking state and the breakage of the tube is prevented.
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