Coil winding apparatus and coil winding method
AssigneeNittoku Co., Ltd.
InventorsNao Shibuya, Yuji Higeta
Life of this patent
Estimating the term…
Abstract
A coil winding apparatus includes: a core rod feeding unit configured to feed a string-shaped core rod from a core rod nozzle; a core rod drawing unit configured to draw out the core rod; a wire rod feeding unit configured to feed a wire rod towards the core rod; a rotator capable of rotating about the core rod nozzle; the guide member provided on the rotator, the guide member being configured to clamp, with the core rod, the wire rod that has been fed from the wire rod feeding unit; and a rotating unit configured to rotate the rotator to rotate the guide member together with the rotator so as to revolve the wire rod around the core rod in a vicinity of the core rod nozzle.
Claims9
A coil winding apparatus, comprising:
- a core rod feeding unit configured to feed a string-shaped core rod from a core rod nozzle at a constant tension;
- a core rod drawing unit configured to draw out the core rod from the core rod nozzle against the tension by holding the core rod that has been fed from the core rod nozzle;
- a wire rod feeding unit configured to feed a wire rod towards the core rod that has been drawn out from the core rod nozzle, the wire rod being fed in a direction intersecting with a drawing direction of the core rod;
- a rotator into which the core rod nozzle is inserted, the rotator being capable of rotating about the core rod nozzle;
- a guide member provided on an end portion of the rotator at a position away from a position of an axis of rotation of the rotator, the guide member being configured to clamp, with the core rod, the wire rod that has been fed from the wire rod feeding unit;
- and
- a rotating unit configured to rotate the rotator together with the guide member so as to revolve the wire rod around the core rod in a vicinity of the core rod nozzle, wherein:
- the wire rod feeding unit includes:
- a wire rod nozzle configured to feed the wire rod to pass therethrough;
- a wire rod clamping tool configured to releasably clamp the wire rod passing through the wire rod nozzle;
- and
- a fluid pressure cylinder including a main body portion and a retracting rod, the retracting rod projecting from the main body portion and having the wire rod nozzle mounted thereto, the retracting rod moving in a moving direction with respect to the main body portion, the fluid pressure cylinder being configured to increase and reduce a distance between the wire rod nozzle and the wire rod clamping tool by moving the retracting rod in the moving direction.
A coil winding method for winding a wire rod around a string-shaped core rod in a spiral manner, the coil winding method comprising:
- inserting the core rod through a core rod nozzle while applying a predetermined tension to the core rod;
- inserting the wire rod into a wire rod nozzle and clamping the wire rod toward the wire rod nozzle with a wire rod clamping tool;
- moving a retracting rod of a fluid pressure cylinder in a moving direction with respect to a main body portion of the fluid pressure cylinder to move the wire rod nozzle closer to the wire rod clamping tool;
- moving the wire rod clamping tool and the wire rod nozzle closer to the core rod, together with the wire rod;
- and
- revolving the wire rod around the core rod in a vicinity of the core rod nozzle while drawing out the core rod from the core rod nozzle against the tension.
Dependencies are inferred from the claim text.