| 摘要 |
PURPOSE:To enable a mandrel to be extracted from the hose even in a complicated or large-sized one by revolving the arms of pressing members in interlocking to the action of compressing means, and providing a drive-controller that operates to press the pressing surfaces to the outer peripheral surface side of a cylinder tip-end. CONSTITUTION:In an apparatus for extracting a mandrel, there is provided a steep tip-end 11a formed with a cylindrical shape having an inner periphery that can fit to the outer periphery of a mandrel and capable of being inserted into a hose coated over the peripheral surface of the mandrel, and also provided a main body 10 having in its rear side a connection member 13 to be secured in an operating tool and an air piping connection part 30 adapted for supplying compressed fluid into the cylinder of the body 10. With arms 21 having pressing surfaces 21b capable of confronting the tip-end outer peripheral surface of a cylinder 11, pressing members 20 are rotatably supported on fundamental parts 23 provided on the outer peripheral surface of the cylinder 11, and by driving control means, the arms 21 of the pressing members 20 are permitted to revolve interlocking with the action of air from the air piping connection part, so that the pressing surfaces 21a thereof are brought into press-contact with the tip-end outer peripheral surface side of the cylinder 11. |
