JP2777738B2 - Apparatus for judging the quality of weft insertion-related members of an air jet loom - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for judging the quality of a weft insertion-related member of an air jet loom in accordance with an actual weft insertion state.

[Conventional technology]

Japanese Patent Application Laid-Open No. Sho 61-174455 discloses an apparatus that measures the wind speed distribution of a guide groove of a reed of a loom to determine the quality of the reed. Further, as disclosed in Japanese Patent Application Laid-Open No. 62-257443, the patent applicant has proposed a method and apparatus for measuring the wind speed distribution formed by an auxiliary nozzle of a loom and determining the quality of the auxiliary nozzle. I have.

In each of the above-mentioned prior arts, a single member of a reed or an auxiliary nozzle is partially and fragmentarily measured at different times to judge the quality. However, when weaving the reeds and auxiliary nozzles that pass this pass / fail judgment result on the loom, wefts may jump out of the reed guide grooves, bend picks,
Weft insertion failure such as chip trouble may occur. For this reason, it has been required to repair defective parts of the reed or the auxiliary nozzle on the loom, or to replace the worst case in the worst case. In particular, in the case of a reed, the frequency of replacement is large, and there is a great problem in production efficiency.

In addition, in the above-described conventional pass / fail determination device, the inspection data obtained by measuring a single piece of the reed and the auxiliary nozzle cannot grasp the correlation between the main nozzle pressure on the loom, the auxiliary nozzle pressure, the weft arrival timing, and the like. As a result, the actual weft insertion state cannot be predicted. For this reason, it is difficult to maintain good operation by centrally managing a large number of looms, investigate good operating conditions, investigate the causes of increased operating rates, and eliminate factors that reduce operating rates, using the inspection data described above. It was possible.

[Object of the invention]

Therefore, an object of the present invention is to insert the weft yarn toward the runway in the same state as the weft insertion device of the actual weaving machine in order to eliminate the drawbacks of the conventional pass / fail determination device, and to insert the weft yarn onto the runway. It is to judge the quality of the weft insertion related members such as the weft yarn storage device, the main nozzle, the auxiliary nozzle and the reed from the running state.

[Solution of the Invention]

Therefore, the present invention arranges a weft yarn storage device, a main nozzle, an auxiliary nozzle, a reed, a yarn feeding cutter, and a yarn feeding side weft suction device on a fixed beam in the same manner as a weft insertion device of an actual loom, and operates them. In addition to being able to be driven by the control device, a weft thread sensor as a plurality of weft thread detection means, an eye camera, and a jump-out sensor are arranged at predetermined intervals along a guide groove of a reed as a weft thread travel path, and signals from these are detected. It can be processed by the information processing device.

[Function of the invention]

At the time of inspection, the operation control device operates the weft storage device, the main nozzle, the auxiliary nozzle, the yarn feeding cutter, and the non-yarn feeding side weft suction device in the same manner as the actual weft insertion under a preset condition, and discharges the weft yarn. The weft is inserted into the weft running path in the guide groove of the reed. At this time, a plurality of weft yarn sensors, an eye camera, a jumping-out sensor, and the like detect the leading end of the flying weft yarn and the flying state at each detection position on the runway, thereby responding to the flying state of the weft yarn. Generate a signal. Therefore, the information processing apparatus plots the arrival time of the weft yarn at each detection position on the weft flight path on the crank angle, so that the flight state of the weft yarn can be quantified and read on the display as necessary. Display with or record by printer. From the measurement result, a defective member to be inspected can be specified among the weft insertion-related members, and a defective position of the defective member can also be specified.

〔Example〕

1 to 4 show the mechanical configuration of a device 1 for judging the quality of a weft insertion-related member of an air injection loom.

Fixed beam 2 such as a loom sleigh or a measuring sleigh
Above, for example, two weft storage devices 3 corresponding to two colors,
A double main nozzle 4, a plurality of auxiliary nozzles 5, a reed 6,
The yarn feeding cutter 7 and the weft yarn suction device 8 are arranged at predetermined intervals similar to the actual weft insertion state. When the fixed beam 2 is a sleigh dedicated to measurement, a leg 9 with wheels is attached to an end of the fixed beam 2. The reed 6 is a so-called deformed reed,
A guide groove 61 is formed on the front surface to form a weft flight path. In addition, the weft yarn suction device 8 is constituted by a suction tube 81 that opens at the end of the guide groove 61 on the non-weft insertion side, and a blower 82 connected to the suction tube 81. In addition, weft 13
Is supplied from the yarn supply package 14 and the weft storage device 3
Through the main nozzle 4. Here, the weft storage device 3, the main nozzle 4, the auxiliary nozzle 5, and the reed 6 are weft insertion related members, and one or more of them are incorporated as inspection targets.

Along the guide groove 61, a plurality of weft yarn sensors 10a, 10b,.
.. 11h are sequentially provided at predetermined intervals. Further, as a weft detecting means, a pair of pop-out sensors 12 are provided.
a and 12b are provided opposite to each other on the weft insertion side and the counter weft insertion side. The jump-out sensors 12a and 12b form a plurality of light emitting and receiving type sensors on the weft insertion side and the arrival side to form a measurement range of a vertical surface, or the weft yarn 13 is set to face up and down over the weaving width so that the weft yarn 13 jumps out. Is detected.

Next, FIG. 5 shows the operation control device 15 and the information processing device.
16 shows an electrical configuration.

The operation control device 15 has a drive unit 17, and the drive unit 17 uses the timing generator 18, the condition setting unit 19 and the weft storage device 3, the main nozzle 4, the auxiliary nozzle 5, the yarn feed cutter 7, and the weft yarn In addition to the suction device 8, the information processing prime minister 16
Is connected to the signal processing unit 20 inside the. The signal processing unit 20 of the information processing device 16 is configured by a CPU or the like, and has storage, arithmetic, and control functions.
21, a display 22, a printer 23, a display 24 such as a display lamp or a buzzer for pass / fail judgment, a strobe light emitter 26, and a weft thread sensor 10a, 10b..10h, an eye camera 11a, 11b..11h, Projection sensors 12a, 12b ... 1
In addition to 2h, the unwinding sensor 25 attached to the weft storage device 3
And so on.

The signal processing unit 20 includes a signal processing function in each measurement mode, a program for displaying data as a graph on the display 22, and an editing program for recording the data on the printer 23.

The operator operates the rotation speed setting device 180 of the timing generator 18 in advance, sets the frequency division ratio of the frequency divider 182, and divides the clock pulse from the clock pulse generator 181 by the counter 183. Is set to generate a rotation angle signal θn corresponding to the number of rotations of the loom, and the condition setting device 19 is operated to inject (start / end) the timing of the main nozzle 4, the timing of the relay injection of the auxiliary nozzle 5, the weft After setting the unwinding / locking timing of the locking pin 31 of the storage device 3, the suction timing of the weft yarn suction device 8, and the cutting timing of the yarn feeding cutter 7, the input device is set.
Operate 21 to give a start command as the flight speed measurement mode. At this time, the drive unit 17 compares the rotation angle signal θn with the operation angle signal θs of the main nozzle 4 and the like, and the weft storage device 3, the main nozzle 4, the auxiliary nozzle 5, the yarn feed cutter 7, and the weft suction device 8 Are operated at a predetermined operation timing. As a result, the weft yarn 13 is unwound by the retraction of the locking pin 31 by the weft yarn storage device 3, flies along the guide groove 61 of the reed 6 by the main nozzle 4, and is urged by the relay injection of the auxiliary nozzle 5. Then, the weft is inserted along the weft flight path, held by the suction airflow of the weft suction device 8, and finally cut by the weft supply cutter 7 on the weft insertion side. At this time, the weft insertion state, that is, the running state and the running speed of the weft thread 13 are determined by the weft storage device 3,
Based on the arrangement of the main nozzles 4, the auxiliary nozzles 5, the reeds 6, and the like, the setting is made in the same manner as the weft insertion of an actual loom. During this time, the plurality of weft sensors 10a, 10b,... 10h, the plurality of eye cameras 11a, 11b,... 11h, the unwinding sensor 25 and the pair of pop-out sensors 12a, 12b, etc. By detecting the attitude or detecting a state deviating from the runway, the detection signal S1,
S2, S3, and S4 are generated and sent to the signal processing unit 20.
Therefore, the signal processing unit 20 outputs the detection signals S1, S2, S
3. After storing the point of occurrence of S4 in relation to the rotation angle signal θn, compare it with the necessary calculation and standard arrival timing data based on the signal processing program, Is displayed on the display 24, and a graph of the flight characteristics is calculated based on the data, and is displayed on the display 22 as a graph.

FIG. 6A shows a graph in a normal landscape state. The central solid line is the average value (standard straight line) of the population of measured values, and the two thin lines sandwiching it represent an allowable range based on the standard deviation of the error curve. Next, FIG. 6B
Shows a graph when the reed is defective between the weft sensor 10e and the weft sensor 10f. In this case, the graph is bent at a defective portion with respect to the standard straight line, and thereafter appears almost parallel to the standard straight line. FIG. 6C shows another abnormality. The graph at this time appears with a different slope from the standard straight line on the way. From this graph, it can be understood that the weft yarn 13 has jumped out of the flight path after the weft yarn sensor 10e.

Here, the weft storage device 3, the main nozzle 4, the auxiliary nozzle 5, the reed 6, the weft suction device 8, and the like are weft insertion related members and can be inspected. Normally, the reed 6 is to be inspected, but the present invention is not limited to this. By mounting the standard reed 6 on the sleigh of the actual loom as the fixed beam 2,
The main nozzle 4 and the plurality of auxiliary nozzles 5 can be inspected.

In the flight attitude observation mode, the strobe light
.. Intermittently irradiate the flying weft thread 13 at each predetermined rotation angle, and the eye cameras 11a, 11b,... 11h capture the image as an image and send it to the signal processing unit 20. Therefore, the signal processing unit 20 sequentially or simultaneously displays the actual flight state on the display 22 for each rotation angle by executing the image processing program. Such information can be edited by the printer 23 as necessary, and output as unique data of the inspection target.

The signal processing unit 20 includes, in addition to the above-described graph processing,
An averaging process, a program for obtaining a standard deviation and a standard deviation curve, and the like are also executed as necessary.

Further, when inspecting the quality of the main nozzle 4,
The unwinding sensor 25 for the weft yarn 13 wound on the drum of the weft yarn storage device 3 is provided, and the weft yarn 13 unwound from the weft yarn storage device 3 is guided by the main nozzle 4 to guide grooves of the reed 6.
The relationship between the unwinding timing at the time of insertion into the cylinder 61 and the rotation angle signal θn from the clock pulse generator 181 is obtained, and the relationship between the standard unwinding timing of the main nozzle 4 and the rotation angle signal θn obtained in advance is obtained. The pass / fail may be checked by comparing.

〔The invention's effect〕

In the present invention, the weft insertion related members are arranged in the same state as the actual air jet loom, and the weft yarn is actually weft inserted and flies under the action of the weft insertion related members, so that a reed, a main nozzle, an auxiliary The reliability of the quality judgment result of the nozzle and the like is enhanced, and troubles after assembling to an actual loom and troubles during operation are minimized.

[Brief description of the drawings]

FIG. 1 is a plan view of a device for judging the quality of a weft insertion related member, FIG.
Fig. 3 is a front view of the device, Fig. 3 is an enlarged side view of a part of the device, Fig. 4 is an enlarged front view of a portion of the device, Fig. 5 is a block line of the operation control device and the information processing device. FIG. 6A
B and C are graphs at the time of quality judgment. 1 ... weft insertion related member quality judgment device, 2 ... fixed beam,
3 ... weft storage device, 4 ... main nozzle, 5 ... auxiliary nozzle, 6 ... reed, 8 ... weft suction device, 10a, 10b
..10h ... weft sensor, 11a, 11b ... eye camera, 1
2a, 12b: Projection sensor, 13: Weft thread, 15: Operation control device, 16: Information processing device, 17: Drive unit, 18 ...
... Timing generator, 19 ... Condition setting unit, 20 ... Signal processing unit, 22 ... Display, 23 ... Printer.

Claims (4)

(57) [Claims] 1. A weft storage device, a main nozzle, an auxiliary nozzle, a reed, a yarn feed cutter, and a non-yarn supply side weft suction device are sequentially arranged on a fixed beam, and these weft yarn storage devices, a main nozzle, an auxiliary nozzle, and a supply nozzle are provided. The yarn cutter and the non-yarn supply side weft suction device can be driven by the operation control device based on standard setting conditions at a preset number of revolutions, and a plurality of weft yarns are detected along the weft flight path on the front surface of the reed. A means for judging the quality of a weft insertion-related member of an air jet loom, wherein the means are removably arranged at predetermined intervals and these weft yarn detecting means are connected to an information processing device. A timing generator for generating a rotation signal corresponding to a preset number of rotations;
A condition setter for presetting the operation timing of the main nozzle, the auxiliary nozzle, the weft storage device, the weft suction device and the yarn feed cutter, and the main nozzle, the auxiliary nozzle, the weft storage device and the weft based on a timing signal from the timing generator. The weft insertion-related member judging device for an air jet loom according to claim 1, characterized by comprising a suction device and a drive unit that operates the yarn feeding cutter at respective operation timings. 3. The information processing apparatus according to claim 1, wherein the information processing device is configured by a CPU that stores and calculates inspection data of a weft running state obtained for a main nozzle, an auxiliary nozzle, and a reed. 3. A device for judging the quality of a weft insertion related member of an air injection loom according to claim 2. 4. A weft insertion-related member according to claim 3, wherein a display for displaying measurement data and a printer for outputting the data are incorporated in the information processing apparatus. Judgment device.