Abstract: An embroiderable sewing machine, including a plurality types of embroidery frames that hold a workpiece cloth to be embroidered; a carriage allowing selective attachment and detachment of the embroidery frames; a transfer mechanism that transfers the carriage independently in two orthogonal directions; a first detector that outputs a constant signal corresponding to the type of embroidery frame attached to the carriage; a second detector capable of outputting a detection signal based on presence and absence of a detection subject provided at the embroidery frame; and a signal converter that converts the constant signal outputted from the first detector into a periodic signal based on the detection signal outputted from the second detector.

Abstract: A sewing machine includes a spool pin stand having spool pins to which thread spools are attachable and seats corresponding to the spool pins, respectively, thread passage defining members located on a thread passage, a sewing data storage unit storing sewing data including at least thread color information about colors of the needle threads, thread supply display units which are located on the spool pin stand so as to correspond to the spool pins respectively, the thread supply display units being configured to produce light which transmits through at least ones of the spool pins and the seats and displaying the thread colors in a color-variable manner, respectively, and a thread color information control unit controlling the thread supply display units based on the thread color information so that thread colors corresponding to the spool pins are displayed by the thread supply display units, respectively.

Abstract: A sewing machine including a needle bar that has a sewing needle attached in a lower end thereof; a needle-bar vertical drive mechanism that vertically moves the needle bar by a sewing machine motor via a sewing machine motor main shaft; an imaging unit that captures image of at least the sewing needle and a moving object that is in close proximity of the sewing needle; a distance calculating portion that calculates a distance between the sewing needle and the moving object based on image data captured by the imaging unit; a judging portion that makes a judgment that the distance calculated by the distance calculating portion is equal to or less than a predetermined distance; and a control portion that controls execution of a predetermined safety operation based on a judgment result of the judging portion.

Abstract: An embroiderable sewing machine, including a plurality types of embroidery frames that hold a workpiece cloth to be embroidered; a carriage allowing selective attachment and detachment of the embroidery frames; a transfer mechanism that transfers the carriage independently in two orthogonal directions; a first detector that outputs a constant signal corresponding to the type of embroidery frame attached to the carriage; a second detector capable of outputting a detection signal based on presence and absence of a detection subject provided at the embroidery frame; and a signal converter that converts the constant signal outputted from the first detector into a periodic signal based on the detection signal outputted from the second detector.

Abstract: A sewing machine includes needlebars for a sewing operation using a plurality of needle threads, a spool pin stand having a plurality of spool pins to which thread spools corresponding to the needlebars are attachable, respectively, thread passage defining members located on a thread passage extending from the spool pin stand to the needlebars, a storage unit storing sewing data including at least thread color information about colors of the needle threads, thread supply display units located on the spool pin stand so as to correspond to the spool pins respectively, the thread supply display units displaying the thread colors in a color-variable manner, respectively, and a thread color information display control unit controlling the thread supply display units based on the thread color information read from the sewing data storage unit, so that thread colors corresponding to the spool pins are displayed by the thread supply display units, respectively.

Abstract: A sewing machine including a needle bar that has a sewing needle attached in a lower end thereof; a needle-bar vertical drive mechanism that vertically moves the needle bar by a sewing machine motor via a sewing machine motor main shaft; an imaging unit that captures image of at least the sewing needle and a moving object that is in close proximity of the sewing needle; a distance calculating portion that calculates a distance between the sewing needle and the moving object based on image data captured by the imaging unit; a judging portion that makes a judgment that the distance calculated by the distance calculating portion is equal to or less than a predetermined distance; and a control portion that controls execution of a predetermined safety operation based on a judgment result of the judging portion.