Machine for bending pipes with bending tool and mandrel return device.

摘要

Machine for bending pipes -with a bending tool (3); -with a tube feed device (9), whereby a pipe bend (6, 6a) can be approximated in the longitudinal direction of the tube (12) towards the bending tool (3), and having a support tube (8) which it is guided in the longitudinal direction of the tube (12) by a device longitudinal guide (16) provided on the machine body (2) and displaceable by a drive feed tube with a drive (15) located on the machine body; and -with a mandrel return device (19), whereby a bending mandrel (21) which is arranged in a mandrel rod (20, 20a) extending in the longitudinal direction of the tube (12) the side of the bending tool (3), is movable reciprocally between a use position and a retracted position, the device recoil mandrel (19) a support bar mandrel (24) provided on a carriage (23), which it is guided in the longitudinal direction of the tube (12) by a device longitudinal guide (16) located in the machine body and displaceable by a drive bar mandrel with a drive device (15 ) located on the machine body; characterized in that for moving the support bar mandrel (24) in the longitudinal direction of the tube (12), the carriage (23) with the rod support mandrel (24) is operable in the longitudinal direction of the tube (12 ) by a motor (22) provided on the carriage (23) and is movable by the actuator (15) located in the machine body, and in that the longitudinal guide (16) located in the machine body for support mandrel rod (24) is formed by a device of longitudinal guide (16) located in the machine body to the carriage (23) driven by a motor, which is provided at the same time as device longitudinal guide (16) located in the machine body for supporting tube (8).