Roller feed type insulated wire cutting and insulation stripping machine

A roller feed type insulated wire cutting and insulation stripping apparatus, comprising a feed mechanism and a cutting and stripping mechanism, said feed mechanism serving to intermittently feed an insulated wire drawn from a wire supply source toward said cutting and stripping mechanism according to desired length-measuring conditions, said cutting and stripping mechanism serving to cut the thus fed wire and strip the insulation from the cut wire end, wherein said feed mechanism comprises the following elements:

• a pair of first feed rollers disposed downstream of said wire supply source and continuously driven and variable in speed, a pair of second feed rollers disposed downstream of and spaced at a predetermined distance from said pair of first feed rollers, said second feed rollers comprising length measuring means and being intermittently driven according to desired length measuring conditions, with a section being defined between said first and second feed rollers where said insulated wire is forced to slack, and slack detecting means installed for cooperation with said wire slack section for detecting a predetermined minimum or maximum amount of slack in said wire slack section to produce a signal for accelerating or decelerating said pair of first feed rollers for a fixed period of time, said cutting and stripping mechanism comprising a group of cutting blades disposed downstream of and spaced a predetermined distance from said pair of first feed rollers, said group of cutting blades comprising a pair of opposed wire cutting blades, and pairs of first and second insulation cutting and stripping blades disposed upstream and downstream of said wire cutting blades, respectively, and juxtaposed with and opposed to said wire cutting blades, the arrangement being such that the opening and closing action of said cutting blades effects the cutting of the insulated wire and of the insulation on both sides of the position at which said insulated wire has thus been cut, and first and second movable clamps separately movable in the direction of the wire, said movable clamps serving to strip the insulation on both sides of said cut position of the wire when they are moved away from each other and from said cutting blades while clamping the wire during the closing of said cutting blades group, said apparatus further comprising a wire guiding device which can be opened and closed, said wire guiding device being disposed between said pair of wire cutting blades and said first insulation cutting and stripping blades, said wire guiding device being arranged so that it changes from its closed to its opened state from the time just prior to said group of cutting blades starting its closing operation until the time it completes its closing operation and it also changes from its opened to its closed state from the time when said movable clamps start to return upon completion of said insulation stripping until the time just prior to the completing of said return movement of said movable clamps.