| 摘要 |
The invention relates to a device for automatic connection of a movable hydraulic installation to a source of pressurised fluid. According to the invention, the non-return valve 18, provided in the pressure-fluid-supply circuit P2 of the hydraulic flanging members carried by the movable small blade, comprises an actuating rod 17 which is held in an extraction position by the ball of the valve 18 pressed on its seat by a return spring and by the pressure being exerted on the hydraulic flanging members of the pieces to be machined, the said rod 17 moving the closure element away from its seat and decompressing the supply circuit P2 of the flanging members when the auxiliary cylinder (jack) V2, associated with the main cylinder (jack) V1 of the related control unit 2, in the extension position of its piston rod 13 pushes back the rod 17 for releasing the non-return valve 18, against the action of the return spring and of the pressure applying the closure element of the said valve on its seat. The device can be applied to the coupling, to a source of pressurised fluid, of hydraulic flanging members of pieces to be machined carried by a movable small blade serving for holding and transferring the said pieces to different successive stations of an installation or chain for machining and/or treatment. <IMAGE>
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