| 摘要 |
PURPOSE: A pipe bending device capable of controlling the interlocking state of chain in a drive part rotating a forming roll is provided to perform a bending process for pipes of different diameter by replacing a pair of forming rolls according to the diameter of a target pipe. CONSTITUTION: A pipe bending device comprises a molding part(T), a power transmission part(D), a driving part(L) and an elastic member(S). A first forming roll(2) and second forming roll(3) are mounted on the molding part to be close to the upper surface part of a worktable(1). The driving part fixes a gear(9) at end of a rotary shaft. The drive part mounts a main gear(13) to a driving shaft of a hydro part(11) and is meshed with the gear. The elastic member is composed of a plurality of chain elasticity controllers for controlling the tensile force of the chain.
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