JPS59116456A - Weft yarn detector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a splice detection system in a Waterton type weaver.

Figures 1 and 1 and Figures 2 and χ show an example of Waterton-Enoto type imposition. In this water jet sail machine, warp threads J are opened and closed by a belt frame (not shown), and when the warp threads J are opened, weft threads 3 are ejected together with water from a nozzle 2 and placed in a place. is being celebrated. The yarn 4 is normally at the home position shown in Figure 1, and the yarn 3 is pre-hardened to the position shown in Figure 2 at the corner where the yarn 3 is inserted from the nozzle 2 into the opening of the warp. I'm kidding.

The tip I seat part of the prefecture 3 ejected from the nozzle 2 reaches the catch cord 6, and is caught by the catch cord 6 by twisting the catch coat 6 by the spindle 7 on the base hit by the reed 4. . The cutter, the guide 8 and the filler head 9 are integrally fixed to the reed 4, and when the reed 4 moves forward, the barbed weft yarn 3 is cut by the cutter JO. The cloth 5 and the catch cord 6 (which are wound in the direction of the arrow as the cloth is woven, and cutter) are weft 3'i
f! + Cut off. There are always 14 to 5 weft yarns (residual yarns) 12 that have not been cut by the cutter 1.1, and the feed head 9 detects 4 yarns 3 at 1Qfl;f+- of the fabric.

It has a pair of poles 91 and 92 of the feeler head 9, and generates a signal (thread signal) according to the resistance value between the electrodes 91 and 92. This thread signal @ publishes the water detection unit IS part W, the weft detection part molecule, the study thread shield/knowledge control part R, as shown in Sai 31 Ice 1, that is, the feeler hesode 9
At the front of the reed 4, water is first detected, then the weft 3 is detected, and then the remaining yarn J2 is detected. The weft detection part becomes OV unless the feeler head 9 detects the weft 3.

As shown in Figure 4, the thread signal from the feeler head 9 @
is digitized (binarized) by the amplifier 13 and becomes the waveform shown in Figure 3, and the digital signal processing circuit]4
In response to the timing signal shown in Figure 3, the weft detection element is taken out to determine the presence or absence of the weft 3, and when there is no weft 3, a stop signal is sent to the digital No. 18 processing circuit J.
4 to the stop circuit to stop the yarn 8. Here, the timing signal ■ is sent to the proximity switch (advance of the yarn 4) at the time when the feeler hemlock 9 should not detect the weft yarn 3.
It is generated by the following:

However, in this board and cram school, the yarn signal @ from the feeler hemlock 9 is binarized by the amplifier J: ( and converted into a digital signal ■), so it is not possible to respond to minute changes in the yarn code ■, and the weft yarn ■
>W- This caused the paper to miss or cause the paper book to come out empty and be stored at °C. That is, the feeler hemlock 9 is in front of the reed 4; during W, the wire thread 3 does not stably touch the weft threads 94 and 92, so the weft thread 3 cannot be stably felt, and the thread signal ■ becomes fine. However, the signal ■ which is binarized by the 1p width unit j3 is the weft 3
A drop! 91゜92 If the weft detection part is not in good contact with the
A stop signal comes out from 4. Also, due to differences in the position of the crotch of the proximity switch, the thread signal remaining thread detection %Ifl + minute R and the timing signal ■ may partially overlap, in which case the digital signal processing circuit J4 handles the stop signal No more skewers.

It is an object of the present invention to provide a weft yarn that does not cause the error mentioned in 5e above.

The present invention will be explained in detail below with reference to the drawings.

In one embodiment of the present invention, the above-mentioned water/et type weave (
(As shown in Figure 5 in ＼, ノ, Irahenod 9
The thread signal (2) is linearly amplified by the width amplifier 15 to form a waveform (2) as shown in Fig. / Tal signal? It is converted with . Digital signal processing circuit J7 extracts the weft detection portion of the digital signal of the weft using the timing signal ■ from the proximity switch and determines whether at least a part of the weft yarn 3 is within a certain range or within the song. Determine the presence or absence of
If there is no main thread (■), a stop signal is output to the stop circuit to stop the weaving frame. The range of January 1st is larger than the digital signal when there is no weft thread 3 and smaller than the remaining thread detection portion of the digital signal. Therefore, if there is Tet yarn 3, there is no need to issue a weft stop signal and the loom will no longer be able to run out of the weft, and even if the remaining yarn detection part and the timing signal ■ partially overlap, the presence or absence of weft yarn 3 can be detected. I can do it.

As described above, according to the present invention, the yarn signal from the feeler head is linearly amplified in the water generator type weaving system and converted into two or more digital signals by the analog/digital transformer. 9, so &ii
It is now possible to prevent the ML from climbing up the wall, and even if the remaining yarn detection part of the yarn signal is partially knitted with the timing signal, it is possible to firmly stop the weft when there is no weft. It becomes possible.

[Brief explanation of the drawing]

Figures 1 and 2 of the rice are plan views showing different forms of snoring of an example of the Oriday, Figure 3 of the spear 1 is a Taiminoguchiyad to explain the same technique, and the sword 41 and 1 are the same 1 and Shinjinmi. Figures 1.1 and 5 are block diagrams showing an example of a hakama according to the present invention. 15...Amplifier, J6...Analog/tintal converter Ai" device.

Claims (1)

[Claims] In the Watern-Enoto type loom, there is a feeler head that is integrated with the reed and detects the weft as the reed moves forward, an amplifier that linearly amplifies the yarn signal from this feeler head, and a 2-bit A weft inspection and button device k equipped with an analog/tintal converter that converts the above dintal signals.