Rinsing machine for bottles, comprising: - a support structure; - one or more rinsing grippers connected to said support structure, - means for moving and operating grippers, wherein each rinsing gripper comprises: - a fixing structure anchored to said support structure to connect the respective rinsing gripper to said support structure; - a bottle manipulator which is configured to releasably grasp a bottle and is movably connected to said fixing structure to be moved by said means for moving and operating grippers between a rest position in which the manipulator retains the bottle by orienting it with the respective mouth facing upwards, and a working position, in which the manipulator retains the bottle by orienting it with the respective mouth facing downwards, - an injection nozzle which is configured to inject a treatment liquid inside a bottle engaged by the respective bottle manipulator through the mouth of the bottle itself when said manipulator is in the working position; - a collection manifold for collecting the treatment liquid which, after the injection by means of said nozzle, exits the bottle by gravity; - suction means for sucking the remaining treatment liquid residues remaining on the bottle, characterised in that said collection manifold: - comprises a collection mouth provided with an annular sealing body at which said collection manifold is fluidically connectable to the bottle at its mouth; and - is movably connected to said fixing structure to be movable in a coordinated manner with the bottle manipulator by movement means, wherein said movement means are configured so that when said collection manifold is moved it follows the movement of the manipulator at least for all the positions assumed by the manipulator itself between the working position and a predetermined intermediate position between the working position and the rest position while remaining fluidically connected to the bottle grasped by the manipulator, and wherein said annular sealing body is provided with a conical conveying portion intended to be sealingly inserted inside the mouth so as to convey the treatment liquid exiting the bottle directly inside the collection manifold, thereby creating a preferential path for discharging the liquid in the manifold. - a support structure; - one or more rinsing grippers connected to said support structure, - means for moving and operating grippers, wherein each rinsing gripper comprises: - a fixing structure anchored to said support structure to connect the respective rinsing gripper to said support structure; - a bottle manipulator which is configured to releasably grasp a bottle and is movably connected to said fixing structure to be moved by said means for moving and operating grippers between a rest position in which the manipulator retains the bottle by orienting it with the respective mouth facing upwards, and a working position, in which the manipulator retains the bottle by orienting it with the respective mouth facing downwards, - an injection nozzle which is configured to inject a treatment liquid inside a bottle engaged by the respective bottle manipulator through the mouth of the bottle itself when said manipulator is in the working position; - a collection manifold for collecting the treatment liquid which, after the injection by means of said nozzle, exits the bottle by gravity; - suction means for sucking the remaining treatment liquid residues remaining on the bottle, - comprises a collection mouth provided with an annular sealing body at which said collection manifold is fluidically connectable to the bottle at its mouth; and - is movably connected to said fixing structure to be movable in a coordinated manner with the bottle manipulator by movement means,