Sewing machine for sewing button and material separately comprises positioning mechanism, button retension mechanism, memory unit, operation control unit, data entry unit, selection unit, allocation unit, and data creation unit

摘要

A sewing machine comprises a positioning mechanism for positioning to-be-sewn material with respect to a sewing needle; a button retension mechanism for positioning button with respect to the sewing needle; a memory unit; an operation control unit; a data entry unit; a selection unit to select two position coordinate data from several position coordinate data inputted from outside; an allocation unit which allocates two selected position coordinate data for the positioning mechanism and the button retension mechanisms; and a data creation unit. A sewing machine comprises a positioning mechanism for positioning to-be-sewn material with respect to a sewing needle; a button retension mechanism for positioning button with respect to the sewing needle; a memory unit; an operation control unit for performing operation control of the positioning mechanism and a button retension mechanism for every stitch member based on the composite data stored in the composite unit; a data entry unit to input position coordinate data; a selection unit to select two position coordinate data from several position coordinate data inputted from outside; an allocation unit which allocates two selected position coordinate data for the positioning mechanism and the button retension mechanisms; and a data creation unit to combine two allocated position coordinate data and to produce the composite data. The data creation unit is a stitch number comparison unit for comparing the stitch number of the two allocated position coordinate data.