摘要:
A yarn winding assembly (12) installed on a support (18) comprises a motorized spool (14) and an oblique spacer pin (20), between which a yarn (Y) is wound; the spacer pin (20) is supported rotatably by rotating supporting means (34) so that it is entrained in two directions by the yarn wound between the spool (14) and the spacer pin (20); the rotation of the spacer pin (20) is delimited by means of arrest (38) at least in the direction of unwinding of the yarn.
摘要:
A motorized rotary drum (12) supported on a motor housing (16) bears a plurality of yarn loops (Y) wound thereon, such loops being adapted to be unwound upon request from a downstream machine. A yarn-unwinding sensor comprises light-emitting means (42) and light-receiving means (45) both of which are integral with the motor housing (16). Light-guiding means which are integral with the drum (12) guide the light from the light-emitting means (42) to a window (30c) which is defined on the rotary drum (12) in a position such that it is repeatedly engaged by the yarn during its rotary unwinding motion, and vice versa. A reflecting surface (43) reflects the light coming out of the window (30c) back towards the window (30c). Light-deviating means (44) which are integral with the motor housing (16) deviate the light coming back from the window (30c) towards the light-receiving means (45). The unwinding of a yarn loop from the drum (12) is determined on the basis of the variation of light resulting from the yarn transiting on the window (30c).
摘要:
A creel (12) comprising a frame (16) which supports a battery of spools (14) arranged on multiple horizontal rows and a series of yarn guiding eyelets (18) arranged to guide and support the yarns along their path from the spools (14) to an output end (12c) of the creel (12). The yarns are fed to a warping machine (10) by respective yarn feeders (23), each of which comprises a yarn winding reel (24) which is individually motorized. The yarns in output from the spools (14) are diverted toward the output end (12c) by yarn guiding means. The yarn feeders (23) associated with a same row of spools (14) are all supported at the output end (12c) and are subjected to control means adapted to adjust the rotation rate of the yarn winding reels (24) as a function of the signals received from respective load cells (26) functionally arranged between the yarn winding reels (24) and the warping machine (10), so as to stabilize the tension of the respective yarns fed to the warping machine (10) at a fixed or variable preset level.
摘要:
A textile machine (T) receives a plurality of yarns (Y) from respective feeders (12) each provided with a control unit (CU) that calculates, for each garment produced, the amount of yarn consumed (YCmeas) and compares it with a reference consumption value (YCref); if the difference exceeds a preset limit value (%max) that indicates an anomaly, an alarm is generated; periodically, the control unit calculates an average consumption value (YCmed) on the basis of a preset number (Nmed) of already-finished garments, and compares it with the reference consumption value (YCref); if the difference exceeds a preset threshold value (%maxmed), the reference consumption value (Yref) is set to the average consumption value (YCmed).
摘要:
An apparatus comprising at least one stack of feeders (F1, F2, F3), each of which is provided with a motorized yarn winding reel (12) adapted to draw the yarn from a spool in order to feed it to a textile machine. The feeders (F1, F2, F3) are all connected electronically on a primary communication channel (32) in order to communicate bidirectionally with a central control unit (CU), are provided with electronic interconnection means (RXF, TXF) adapted to provide a secondary communication channel (34) which locally interconnects the feeders (F1, F2, F3) of the stack to one another, and are each programmed to communicate their own identification code (ID1, ID2, ID3) to the following yarn feeder in the stack by means of the secondary communication channel (34).
摘要:
A yarn breakage sensor for textile apparatuses, which comprises: - a body (20), - a rod (24) which is adapted to engage the yarn (Y) with a portion (24a) thereof and is pivoted to the body (20) about an axis (A) in order to rotate from a first position to a second position following yarn breakage, - detection means, comprising a first detection element (30) which is integral with the rod (24) and a second detection element (32) which is integral with the body (20) and is arranged substantially along the trajectory of the first detection element (30) in order to face it, with the rod (24) in said second position, and generate a corresponding breakage signal, either said first detection element (30) or said second detection element (32) is supported in a position that can be adjusted substantially along the trajectory of the first detection element (30) by adjustable support means (36).
摘要:
A yarn feeder (10) provided with a drum (12) which supports, wound thereon, a yarn (Y) which can be unwound upon request of a downstream machine, an annular braking body (16) is coaxially pushed against an output end (12a) of the drum (12) by actuation means (18) which act axially; an articulated joint (24) is functionally interposed between the actuation means (18) and the braking body (16); the weight of the braking body (16) generates a torque about at least one articulation axis (X, Z) of the joint (24), against which elastic means (34) act which are functionally associated with the joint (24).