Expanding-mandrel winder for reel
OwnerPierre Marcelli, Julien Marcelliinventors
Life of this patent
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Abstract
A winder in which the jaws of the mandrel expand automatically by the weight of the reel, without introducing external energy. The winder has a mandrel of horizontal axis (A) whose jaws are expandable by means of links hinged to the end of a sliding pull rod and connected to the frame by a hinged connecting rod. The winder includes a rocker connected to the frame by a fixed pivot axis (D) and to the mandrel by the physical embodiment of the axis of rotation (A), the two axes (D, A) are parallel. The rocker moves the mandrel vertically between a raised loading position and a lowered use position under the weight of a reel and it brings about, simultaneously, sliding of the pull rod, automatic expansion of the jaws, and automatic clamping of the reel.
Claims16
An expanding-mandrel winder (10, 11, 12, 13, 14, 15) for a reel (1) equipped with at least one mandrel (20) attached to a frame (30), the mandrel (20) comprising at least three equidistant jaws (21) moving between a loading position in which the at least three jaws (21) are contracted and a use position in which the at least three jaws (21) are expanded and maintain the reel (1) on a generally horizontal axle, the winder comprises an engaging means (60) for automatically expanding the at least three jaws (21) under a weight of the reel (1) and clamping an interior diameter of the reel (1), placing the mandrel (20) in the use position;
- a clamping force exerted by the at least three jaws (21) on the interior diameter of the reel (1) is proportional to the weight of the reel;
- an expansion device (40) is connected to the at least three jaws (21) of the mandrel (20) and the engaging means comprises a guide device (60) for guiding the mandrel (20) between at least the loading position and the use position, the guide device (60) is connected to the expansion device (40) for automatically expanding the at least three jaws (21) simultaneously with the displacement of the mandrel (20) under the weight of the reel (1);
- and
- the expansion device (40) comprises a pull rod (41) connected to the at least three jaws (21) by a variable shape mechanism, and the pull rod (41) sliding within a rotational axle (A) of the mandrel (20) to displace the at least three jaws (21) between the loading position and an unloading position.
An expanding-mandrel winder for a reel, the mandrel winder comprises:
- at least one mandrel (20), which is supported by a frame (30), has at least three equidistant jaws (21) that extend parallel to a rotational axis (A), the at least three jaws (21) are biased between a loading position to load the reel on the winder and an in use position in which the reel is generally horizontally secured;
- a pull rod (41) extends axially along the rotational axis (A) and centrally between the at least three jaws (21), the pull rod (41) communicates with the at least three jaws (21);
- a biasing means (60) is supported by the frame (30) and communicates with the pull rod (41), the biasing means (60) automatically exerts a biasing force on the pull rod (41), which biases the at least three jaws (21) between the loading position and the in use position, in the loading position the at least three jaws (21) are biased to contract and in the in use position the at least three jaws (21) are biased to expand and clamp an interior diameter of the reel (1);
- the biasing force exerted automatically by the biasing means (60) is dependent on a weight of the reel (1);
- and
- an expansion device (40) is connected to the at least three jaws (21) of the mandrel (20) and the engaging means comprises a guiding device (60) for guiding the mandrel (20) between at least the loading position and the use position, the guiding device (60) is connected to the expansion device (40) for automatically expanding the jaws (21) simultaneously with the displacement of the mandrel (20) under the weight of the reel (1);
- the expansion device (40) comprises the pull rod (41) connected to the at least three jaws (21) by a variable shape mechanism, and the pull rod (41) sliding within a rotational axle (A) of the mandrel (20) to displace the jaws (21) between the loading position and an unloading position.
Dependencies are inferred from the claim text.