Apparatus and method for manufacturing insulated conductive wires

Claim 2

Installation for manufacturing insulated conductive wires, comprising, a wire-drawing machine comprising a plurality of dies and first driving means for driving a wire through said plurality of dies, in combination with an enamelling machine comprising second driving means, including a driving capstan, for driving the wire through the enamelling machine after said wire has passed through the wire-driving machine, said second driving means being independent from and without mechanical connection to said first driving means, said Driving capstan including nonslipping means and driving directly the wire issuing from the last die of said plurality of dies of said wire-drawing machine, and means for maintaining the speed of said driving capstan at a preset value even following adjustment or rectification of said first driving means.

Claim 3

Installation according to claim 1, wherein said last die consists of a finishing die, said finishing die being disposed at the output of the wire-drawing machine.

Claim 4

Installation according to claim 1, wherein at least some of the plurality of dies of the wire-drawing machine form a last series of dies, and the driving means of the wire-drawing machine comprise two driving cones disposed respectively on opposite sides of said last series of dies for drawing the wire through said last series of dies, one of said cones having a series of steps corresponding respectively to each of the dies of said last series, said one cone being disposed so that its last step is upstream, with respect to the advance of the wire, of the last die of said last series, and the other of said cones having a series of steps corresponding respectively to each of the dies of said last series except said last die, the wire issuing from said last die passing directly onto said driving capstan of the enamelling machine.

Claim 5

Installation according to claim 1, wherein said non-slipping means comprises means for winding the wire more than once around the driving capstan.

Claim 6

Installation according to claim 1, wherein said non-slipping means comprises a bearing roller.

Claim 7

A continuous high-speed method of manufacturing insulated conductive wire comprising: pulling wire of a first gauge from a supply spool at a relatively low linear speed, drawing down the wire in a wire-drawing machine with dies and with slipping over a series of stepped driving rollers, driving the wire as it emerges at a second gauge and at a high linear speed from the wire-drawing machine by a non-slip capstan driven independently of and without operative connection to the wire-drawing machine at a constant high speed and directly into a high speed enamelling machine, without necessitating modification of the enamelling operation on rectification of the wire-drawing machine rollers due to wear arising from said slipping, subjecting the wire to a high-speed enamelling operation in the enamelling machine, and collecting the enamelled wire in a take-up unit at said high linear speed.

Claim 8

A continuous high-speed method of manufacturing insulated conductive wire comprising: pulling wire of a first gauge from a supply spool at a relatively low linear speed, drawing down the wire in a wire-drawing machine with dies and with slipping over a series of stepped driving rollers, driving the wire as it emerges at a second gauge and at a high linear speed from the wire-drawing machine by a non-slip capstan driven independently of and without operative connection to the wire-drawing machine at a constant high speed and directly into a high speed enamelling machine, without necessitating modification of the enamelling operation on rectification of the wire-drawing machine rollers due to wear arising from said slipping, subjecting the wire to a high-speed enamelling operation in the enamelling machine, and collecting the enamelled wire in a take-up unit at said high linear speed.