Pipe bending die unit and pipe bending apparatus provided with the unit

摘要

PROBLEM TO BE SOLVED: To provide a pipe bending type unit capable of appropriately performing bending processing for a pipe without being anxious for generation of wrinkles and to provide a pipe bending processing device which is provided with the unit and facilitates retooling.SOLUTION: A pipe bending type unit includes: a holding member 10 which has a first groove part 11 with a hemi-cyclic cross-section on an outer circumferential surface and has a fitted concave part 12 extended by a first prescribed distance to the circumferential direction in a plane vertical to a rotation shaft (A); a pressure-opposing member 20 which has a second groove part 21 with a hemi-cyclic cross-section on an outer circumferential surface and has a fitting projection part 22 extended by a second prescribed distance to the circumferential direction from a tip part thereof; a hollow shaft member (sleeve 70) which supports the holding member and the pressure-opposing member rotatably; and a fixing shaft member (stud 60) stored in the hollow shaft member. The fitting projection part is fitted to the fitted concave part, a pipe receiving groove with a hemi-cyclic cross-section is formed and the pressure-opposing member and the holding member are connected by a hinge bonding via the hollow shaft member.SELECTED DRAWING: Figure 3