Device and process for the regulation of thread winding onto a bobbin by applying a desired contact pressure Pc of the operating bobbin, providing the bobbin-holder arm with a counterweighing counterthrust Pp, on the basis of a pre-established trend of the value of Pc in relation to the advance length of the bobbin, indicating the weight of the bobbin in relation to the ratio between the length reached and indicating the rising a angle of the bobbin-holder arm, calculating the weight component due to the bobbin and said arm and applying a counterthrust Pp equal to the difference between said component and the pre-established value of the contact pressure Pc referred to the length reached.