Conveyor device with an improved transfer arm

Device (10) for conveying objects such as preforms and bottles, of the type comprising a rotating support (12) which is driven in rotation continuously about a substantially vertical axis of rotation (AO) and which carries a transfer arm (14), of the type in which the transfer arm (14) comprises a supporting element (16) which is mounted in a swivelling manner with respect to the rotating support (12), about a swivelling spindle (18) which is substantially parallel to the axis of rotation (AO) of the support (12), and a grasping head (20) which is able to support at last one object and which is mounted in a sliding manner with respect to the supporting element (16), in a direction (BO) approximately radial with respect to the axis of rotation (AO) of the support (12), between a proximal retracted position and a distal extended position with respect to the axis of rotation (AO), of the type in which the grasping head (20) is attached cantilevered on the distal end section (89) of a slider (22) sliding in a slide (24) fixed to the supporting element (16), and of the type comprising a first cam system and a second cam system for driving the grasping head (20) in its sliding and the supporting element (16) in its swivelling respectively, according to the angular position of the arm (14) about the axis of rotation (AO) of the support (12)

• characterized in that the slide (24) comprises a downwardly open groove (25), in that the slider (22) is produced in one piece with the overall shape of a rail, the profile of the slider (22) being complementary to that of the profile of the groove (25) of the slide (24), such that the slider (22) is held vertically downwards by the slide (24) and its profile, and in that the supporting element (16) comprises a main cylindrical body (72) coaxial with the swivelling spindle (18), the slide (24) being fixed to the lower transverse face (74) of the main body (72).