Patent ID: 6722273
Filing Date: 2004-04-20
Classification: B29C

Abstract:
Sequential numbering machine for injection moulds, for carrying out marking on pieces obtained by injection moulding, the marking being carried out sequentially on each piece and the numbering machine acting automatically, said numbering machine comprising:a cylindrical and hollow casing in which are housed a plurality of cams and a like number of wheels mounted collaterally with each other forming two assemblies, each cam being connected to a respective one of said wheels, so that the turning of each cam signifies the turning of the respective wheel; from the casing a spindle emerges to the exterior of the casing; mounted on the internal end of said spindle is a lever which on its end has individual articulated first and second arms, the first arm having an outer toothed sector, and the second arm having a plurality of prongs, the first arm being arranged for pressing on the cams whilst the prongs are arranged for pushing on the wheels; wherein each impulse which the spindle receives corresponds to a linear displacement of the spindle, which causes rocking of the lever and pushing of one of the teeth of the toothed sector corresponding to the first arm against one of a plurality of projections included on the periphery of each of the cams, there being defined between each pair of consecutive projections a like number of inlets, there being a hollow recess on the cam, wherein upon each complete turning of the cam, the toothed sector is introduced into the hollow recess, so that on the next impulse a second tooth presses on a second cam so that each sectorial turning of the corresponding cam signifies the partial turning of the wheel connected with that cam, the remaining wheels remaining immoblised by the pressure which is exerted thereon by the prongs.