| 摘要 |
PURPOSE:To enable a center of a mold to coincide with an axis line of a head, by using a head which is attached to a cylinder body in a manner to bring axis lines into coincidence with each other, the cylinder body being supported to an axle body, whose axial line coincides with that of a cylinder rod, in a slight play so that it can move in a radial direction. CONSTITUTION:A ball retainer 26, movably placed by means of a plurality of balls 25a, 25b..., is located between the nip formed by support rings 24 and 28, and is positioned by threadedly engaging guide pins 29a and 29b with a positioning screw 21. This causes coinciding of the axis lines of the support rings 24 and 28 with that of the retainer 26, a support axle 13 and an adaptor 18 are positioned so that their axis lines coincide with each other, and they freely move relatively in a direction of a radius through the working of the balls 25a and 25b. In case an axis line of a pot 4 is displaced from that of a head 30, the axis lines coincide with each other through movement of the adaptor 18. |
