Tube bending machine with axially movable inner core

Details Tube bending machine with axially movable inner core Tube bending machine with axially movable inner core

1980-03-03

1982-05-25

Larson, Lowell A.

Metal deforming

By deflecting successively-presented portions of work during...

With feeding of discrete articles or orienting of work...

72134, 72150, B21D 905

Patent

active

043310150

ABSTRACT:
A tube bending machine comprises a tube bending mechanism per se for bending a front portion of a tube inserted therein and fluid operated units for moving a mandrel in axial direction into the tube to be bent and for withdrawing the mandrel through a rear end of the tube after bending. A tube magazine is located to one side of the bending mechanism and a tube depositing station for receiving the bent tube is located at the other side thereof. A gripping and transfer apparatus is provided which includes two transversely spaced grippers on opposite ends of an arm movable in vertical direction, preferably by a fluid-operated cylinder-and-piston unit, and the whole gripping and transfer apparatus is movable on a horizontal guide rail with the grippers on the arms spaced from each other in such a manner that when the gripper and transfer apparatus is in the region of one end of the rail one of the grippers can grip a tube at a receiving station of the magazine and the other gripper a finished bent tube in the bending mechanism, while when the gripper and transfer mechanism is in the region of the other end of the guide rail the one gripper can place the one tube into the bending mechanism, while the other gripper places the finished bent tube onto the depositing station.

REFERENCES:
patent: 2714324 (1955-08-01), Dinsmore et al.
patent: 3287952 (1966-11-01), Van Harten

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