JPS61245349A - Weaving method in water jet loom - 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 relates to an improved weaving process in a water jet loom, the main purpose of which is to increase the service life of the weaving loom.

Because the water jet loom rotates at extremely high speeds, the reeds wear out in a short period of time, so we have tried to prolong its life by moving the weft sli [up and down]. As a result, we were able to significantly extend the service life.1 However, with the conventional displacement method, when wear progresses after a certain period of time, sudden dents occur at both the upper and lower ends of the displacement, which immediately causes trouble, so it is difficult to improve. It was wanted. In other words, it is desirable to have a weaving method (weft batting line displacement method) that can continue to be used even when wear occurs, resulting in a taut worn shape. Since we have established a weaving method that produces such a worn shape, we have filed the present application. The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is a side view of the reed showing the worn shape.

■When the company line batting line does not displace, a narrow dent will form in a short period of time due to wear and tear on the reed 1, making it unusable. φ) Since the displacement is caused by the company's eccentric circular cam, deep dents/b are created at both the upper and lower ends, making it impossible to use. Since (0) is a constant velocity displacement by a heart cam, an equal amount of wear dents 10 are formed in the entire area of the displacement, but the dents at both the upper and lower ends are abrupt, making it unusable. The wear of φ) results in gentle depressions ld at both the upper and lower ends, so it is ideal under the current situation where wear is unavoidable, as it allows continued use even if wear occurs, and is the wear shape aimed at by the present invention. The figure is a side view showing the weft stroke line displacement mechanism during heating. / indicates the state at the time of weft driving with a reed. 2 heats the weft jetted into the warp 3 (3') by a reader and holder to weave a woven fabric, t(j'), which is taken up by a take-up roll 7 via a breast roll 6. In this case, in order to prevent premature wear of the cloth, the temple bar r, which supports the lower surface of the woven fabric j, is moved up and down little by little. Therefore, the camcorder (
1>, the arm /I is rotated about the rotation axis 10. As a result, the latitude stroke line l is vertically displaced to l', and the vertical difference W is 3 to 4 dews. 3',
j', f', 9', / /' are respectively latitude stroke lines II
Warp thread 3 when is displaced to l'. Woven fabric j, temple bar, cam 9. ] is the variable position of the arm //.

Figure 5 is a displacement motion diagram that results in the wear shape as shown in Figure 1 (Figure 1), Figure 1+ is a displacement motion diagram that results in the wear shape shown in Figure 1 (0), and Figure 5 is the sawtooth motion as shown in Figure 3. FIG. 6 is a plan view of the eccentric circular cam 9a that provides the displacement movement shown in FIG. was being asked for.

FIG. 7, FIG. 8, and FIG. 9 are three examples of displacement movement diagrams (cam diagrams) for carrying out the weaving method (weft batting line displacement method) of the present invention. In both cases, it takes several times (4 to 4
6 times) small displacement (vertical difference W 173~2/3 T
) in a step-by-step manner. In this case, the upper and lower level positions of the small step-like displacements are designed so that they do not overlap. Figure 7 Mine 6-time division method for 1 cycle (
One rotation of the cam (360 degrees) is divided into 6 sections of 60 degrees each, and a small vertical displacement is arranged for each section, so that each vertical movement is continuous and the vertical positions of each small displacement do not overlap. did. As a result, horizontal lines a, 'b, 'a, which divide the vertical difference T in displacement into six equal parts,
eL, e, f.

The number of intersections between g and the displacement line Ll is as shown in the number at the right end of the graph.
1e 3e 'Im l Or 'Is 3*
1, which is smaller at both the upper and lower ends and increases toward the center. This shows that there is a lot of wear at the center, but there is little wear at both the upper and lower ends, resulting in the wear dent /d shown in Figure 1 (CD), which was plotted using the same method as in the case of the disc. The number of intersections is 1'%
5e 'It 3. 1, which increases in the center and decreases in the upper and lower ends. In FIG. 9, displacement lines of four sections were drawn using the same method. The number of intersections is l, s,? , 3. Although it is slightly distorted, it achieves the purpose. TJ2. L3 is a displacement line.

Figures 10, 11, and 12 are similar to Figures 7, 8, and 9.
6-step cam manufactured according to the displacement line in the figure, 5
FIG. 3 is a plan view of a 5-stage cam using the 4-time division method and a 1-stage cam using the 4-time division method. Each is a small circle with a radius of just 1, /3. /4 and radius R
A great circle whose radius is the vertical difference of 10 displacements/! ;, /Otsu, /7
Between Ll.

L2. Move the displacement line of L3 and move the circumferential surface N/za, l.

20 were formed respectively. By using the curved cam produced in this way as the camde shown in Figure 2 for weaving, it has become possible to weave for a very long time without any problems, without worrying too much about excessive wear. .

[Brief explanation of the drawing]

Fig. 1 (A) (B) (0) CD) is a side view of the reed illustrating the worn shape, Fig. 2M is a side view of the related parts of the water jet loom showing the weft striking line displacement mechanism during heating, Fig. Figures 3 and 1+ are displacement movement diagrams conventionally used, Figures 5 and 6 are plan views of the cams in Figures 3 and 1+, and Figures 7A, 8, and 9 are Examples of displacement motion diagrams for performing the “weaving method” of the present invention, Figures 0 and 1
1 and 12 are plan views of cams manufactured according to displacement movement diagrams for carrying out the present invention. Batting line, ■---- vertical difference in displacement, j--m-woven fabric, 4-
---Fure
-Cam, 1o---Single rotation wheel 1//-・-] shaped arm 3', ≠'* JZ Za/, 97, /l'----
3. ≠、! ,The, ? , state at the time of displacement of //, w−-
・・Small displacement vertical difference, 9B--- Single centric circular cam, 9t・
-・-Heart Cam, 11. II2. L3--Displacement 11a s ”e b+ Or dB Gy fe
g----Horizontal line dividing the vertical difference in one displacement into equal parts, R----Small radius of one cam NR+W---Large radius of cam, /2. /3
．． /Dah--small circle with radius R, /j, #,, /7--
Radius (R + great circle, /1./9.20 --- - Circumferential line of the cam of the embodiment manufactured to carry out the present invention. Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 7 Figure S Figure gX9

Claims (1)

[Claims] 1. The horizontal line of the reed, which is formed by pressing the entire width of the fabric (
In the heating of the water jet loom, which is performed while vertically displacing the latitude striking line by small amounts, the displacement of the latitude striking line (vertical difference W = 3 to 4 mm) is changed by small displacement (vertical difference W = 1/3 to 4 mm). 2)/3W) several times (4 to 6 times)
A weaving method of a water jet loom which is achieved by moving it up and down and moving it in a stepwise manner so that its positions overlap.