Tube bending machine with axially movable inner core
US4331015A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1980 |
| Grant date | May 25, 1982 |
| Priority date | — |
| Expiry date | Mar 3, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D9/073
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
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 mechan…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.