Knitting machine, yarn processing method of knitting machine, yarn processing control device of knitting machine and program thereof

A yarn processing method of the knitting machine for supplying yarn from a yarn processing device to a knitting needle of a needle bed in order of a buffering arm and a yarn feeder, comparing remaining length to be knitted W, which is a total value obtained from knitting data and obtained by summing up consumed yarn length of each loop to be knitted from a changeover position on a knitting fabric for changing over a knitting yarn to an after-processed yarn to an actuating position of the yarn processing device, with yarn guide length L between the yarn processing device and a yarn feeding position at a position of actuating the yarn processing device to feed the knitting yarn to the knitting needle, and thereby controlling the timing for operating the yarn processing device, wherein

• the knitting machine is provided with a sensor for obtaining buffer length of the arm from the direction of the arm, and wherein
• the yarn processing method comprises steps of:
• comparing the yarn guide length L in preset buffer length of the arm with the remaining length to be knitted W, and controlling deceleration of knitting speed so that the knitting speed becomes zero or a low speed at the needle bed at the point of time when a yarn feeding position C is reached when L≦W is satisfied;
• and
• obtaining the buffer length of the arm at the yarn feeding position C by means of the sensor, and operating the yarn processing device at the point of time when reeling out, from the yarn processing device side to the needle bed side, yarn of a length corresponding to the difference between the preset buffer length of the arm and the buffer length obtained by the sensor.

A yarn processing control device for a knitting machine for controlling yarn processing by supplying yarn from a yarn processing device to a knitting needle of a needle bed in order of a buffering arm and a yarn feeder, comparing remaining length to be knitted W, which is a total value obtained from knitting data and obtained by summing up consumed yarn length of each loop to be knitted from a changeover position on a knitting fabric for changing over a knitting yarn to an after-processed yarn to an actuating position of the yarn processing device, with yarn guide length L between the yarn processing device and a yarn feeding position at a position of actuating the yarn processing device to feed the knitting yarn to the knitting needle, and thereby controlling the timing for operating the yarn processing device, the yarn processing control device comprising:

• a sensor for obtaining buffer length of the arm from the direction of the arm;
• means for comparing the yarn guide length L in preset buffer length of the arm with the remaining length to be knitted W, to control deceleration of knitting speed so that the knitting speed becomes zero or a low speed at the needle bed at the point of time when a yarn feeding position C is reached when L≦W is satisfied;
• and
• timing means for obtaining the buffer length of the arm at the yarn feeding position C by means of the sensor, and operating the yarn processing device at the point of time when reeling out, from the yarn processing device side to the needle bedside, yarn of a length corresponding to the difference between the preset buffer length of the arm and the buffer length obtained by the sensor.

A yarn processing control device program, stored on a processing control device readable storage medium, for a knitting machine for controlling yarn processing by supplying yarn from a yarn processing device to a knitting needle of a needle bed in order of a buffering arm and a yarn feeder, comparing remaining length to be knitted W, which is a total value obtained from knitting data and obtained by summing up consumed yarn length of each loop to be knitted from a changeover position on a knitting fabric for changing over a knitting yarn to an after-processed yarn to an actuating position of the yarn processing device, with yarn guide length L between the yarn processing device and a yarn feeding position at a position of actuating the yarn processing device to feed the knitting yarn to the knitting needle, and thereby controlling the timing for operating the yarn processing device, the program comprising:

• a command to compare the yarn guide length L in preset buffer length of the arm with the remaining length to be knitted W, to control deceleration of knitting speed so that the knitting speed becomes zero or a low speed at the needle bed at the point of time when a yarn feeding position C is reached when L≦W is satisfied;
• and
• a timing command to obtain the buffer length of the arm at the yarn feeding position C by means of the sensor, to operate the yarn processing device at the point of time when reeling out, from the yarn processing device side to the needle bed side, yarn of a length corresponding to the difference between the preset buffer length of the arm and the buffer length obtained by the sensor.