摘要:
A weft insertion method in an air jet loom includes: attaching a flight promoter (41) that has a greater surface area per unit weight than a weft yarn (Y) to a distal end portion of the weft yarn (Y) before weft insertion; and performing insertion of the weft yarn (Y) to which the flight promoter (41) is attached.
摘要:
An apparatus for showing compressed air flow rate in an air jet loom includes a main nozzle and sub-nozzles causing a weft yarn to move by means of compressed air, a flow rate measuring device that serves to measure flow rate of compressed air consumed in the air jet loom, and a controller equipped with a display. The controller causes the display to show a time series graph of the measured flow rate of compressed air together with a time series graph of a previously set upper limit flow rate of compressed air for the air jet loom.
摘要:
A nozzle forming body 31 provided with a stretch nozzle 312 is located on the back side of a deformed reed 12 for forming a weft guide passage 121. A passage forming body 39 provided with a weft capture passage 38 is located on the front side of the deformed reed 12. The passage forming body 39 can change its position along a guide passage 121. At least a part of the capture passage 38 extends in the direction intersecting with the direction in which the guide passage 121 extends. A weft tensioner thus constituted can correspond to the change of a weaving width without deteriorating fabric quality and provide sufficient tension to a weft.
摘要:
A profile reed for an air jet loom includes a dent having a guide recess and a lower jaw portion located below the guide recess, and a weft yarn passage formed by a plurality of the dents juxtaposed in the direction of weft insertion. The guide recess is formed with upper, inner lower wall surfaces. The inner wall surface is connected with the lower wall surface through a lower arcuate surface formed with a radius of curvature. The front end of the lower jaw portion is defined by a lower jaw arcuate surface formed with a radius of curvature. The lower jaw portion extends frontward for a distance between the inner wall surface and the front end of the lower jaw portion. The distance is set at or lower than 5.0 millimeters. The sum of the radii of curvature is smaller than the distance.
摘要:
An apparatus for showing compressed air flow rate in an air jet loom includes a main nozzle and sub-nozzles causing a weft yarn to move by means of compressed air, a flow rate measuring device that serves to measure flow rate of compressed air consumed in the air jet loom, and a controller equipped with a display. The controller causes the display to show a time series graph of the measured flow rate of compressed air together with a time series graph of a previously set upper limit flow rate of compressed air for the air jet loom.
摘要:
A main nozzle (1) for an air jet loom includes a yarn inlet pipe (3) into which a weft yarn (Y) is introduced, a passage forming pipe (4) cooperating with a downstream end of the yarn inlet pipe (3) to form therebetween an air passage (33), a yarn accelerator pipe (5) disposed downstream of the passage forming pipe (4), and a nozzle body (2) to which the yarn inlet pipe (3), the passage forming pipe (4) and the yarn accelerator pipe (5) are mounted. A brush (22) as a weft yarn catcher is disposed between the yarn inlet pipe (3) and the yarn accelerator pipe (5).
摘要:
Apparatus for determining status of weft insertion in a jet loom including weft arrival detection means (25) for detecting a weft inserted by injection of fluid is provided. The apparatus comprises clock means (K) for measuring a weft flying period (t1(s)) from the start time of insertion of a weft to the arrival time of the weft; and converting means (Co) for converting the weft flying period (t1(s)) into a weft flying angle (t1(t)) at standard rotational speed (R) of a weaving machine using the weft flying period (t1(s)) measured by the clock means and the standard rotational speed (R).
摘要:
A weft yarn tension applying apparatus (1) in an air jet loom includes a stretch nozzle (11), a valve (28) and an air supply tube. The stretch nozzle (11) is mounted movable in a weft insertion direction at a position on a downstream side of the sub-nozzle (9) of the slay (2) so as to be directed perpendicular to the weft yarn guide passage. The valve (28) is connected to an air tank (27) and provided in a part of the frame. The air supply tube connects the stretch nozzle (11) with the valve (28). The air supply tube includes a first air supply tube (29) connected to the valve (28) and a second air supply tube (39) connected to the stretch nozzle (11). An end of the first air supply tube (29) is fixed to the rocking shaft (20), an end of the second air supply tube (39) is connected to the end of the first air supply tube (29) through a connector (42).