JPS5846159A - Production of four-twist knotless net - 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 a method of knitting a four-twist knotless net.

Conventionally, the knotless net has been used as a two-twist knotless net, each leg of which consists of two strands, or a three-twist knotless net, each leg of which consists of three strands. However, in recent years, with the rise in oil prices, there has been a call for a reduction in the fuel consumption of fishing boats by 1,000 yen, and bottom trawling fishing has become popular.

In purse seine fisheries and fixed aquaculture fisheries, low seine resistance, running water resistance, and net blowing are required, and in fixed aquaculture fisheries, particularly high resistance to seaweed and small organisms is required as performance. In order to meet these conditions, it is necessary to make the cross section of the net legs as close to a circle as possible, to reduce the diameter of the net legs, and to make the surface of the net legs smooth. When the total number of raw yarns is the same, the superiority of the four-twist knotless net is clear compared to the two-twist knotless net or the three-twist knotless net. When trying to obtain 2
Compared to two-twisted knotless nets and three-twisted knotless nets, four-twisted knotless nets can make the strands that make up the legs of the net thinner, so if the amount of strand winding of the pobbin is constant, there are only two twisted knotless nets. It has the advantage of being able to produce braids that are twice as long as nets and approximately 1.3 times as long as three-twist knotless knots.

Despite this, not much research has been done on four-strand knotless nets. This is because in order to manufacture a four-twist knotless net, four strands are required for one net leg, so the number of strands is smaller than the conventional two-twist knotless net or three-twist knotless net. This seems to be due to the need to develop a different device from those in 2 or 3, which hindered the desire to develop, but it was not used in the conventional two-twist, knotless, net manufacturing device. In view of the fact that four notches were provided in a spindle (one set of twisted rings) for transferring the strands, the present invention uses these four notches, and furthermore, these spindles By changing the function of the loop, we were able to use a conventional two-twist knotless netting machine to knit a four-twist knotless net.

That is, this invention has a twisting ring and a braided ring having four notches for transferring strands, and a twisting ring → a braiding ring → a braiding ring →
The twisted rings are arranged in a straight line so that the twisted ring becomes the twisted ring, and four strands are arranged in the notches of each twisted ring.The twisted rings are rotated in the same direction to form a net leg, and the twisted ring and the twisted ring are arranged in a straight line. A four-twist knotless method in which the rings are rotated in opposite directions and temporarily stopped during the process, so that the strands on both twisting rings are transferred via the braided ring to form a knotted part. The purpose of this invention is to provide a method for manufacturing nets.

Next, an embodiment of the method for manufacturing a four-strand knotless net according to the present invention will be described.

The one shown in FIG. 1 is a conventional two-twist knotless knitting machine in which one twisting ring 1 and one braided ring 2 are arranged alternately and linearly. Each of the twisted rings 1 and the braided ring 2 has four notches at positions equally divided by 90 degrees, and two twisted rings and one braided ring form one braided unit. These units are shown in the figure.
It is represented by A, B...F. In addition, a and b in the figure
, c, d are strands.

Fig. 2 shows the apparatus used in the manufacturing method of the present invention, in which one twisted ring 3.4'i1m is placed on each side, and three sets are arranged between them. Wheel 5.6.
7 are arranged, these twisted rings are 3°4, and the braided rings are 5.6.7.
There are also four notches.

In other words, based on the device shown in Fig. 1, every fourth spindle wheel arranged in a straight line is made into a twisted ring, and the others are made into a braided ring. Then, sandwich the braided rings 5, 6, and 7 in the middle, and make one braided unit with the two twisted rings 3 and 4 on both sides) A'
, B', and C'. In addition, a in the figure
b...g, h are strands.

The netting method using this device will be described below based on FIG. 3 and subsequent figures. 1. Regarding the production of net legs, the process (
In 1), strands a,
b...g, h are arranged, and these twisted rings 3, 4 are rotated a desired number of times in the direction of the arrow shown.

As for the production of knitted knots, first, as shown in FIG. 3, both strands a are removed in steps (2) to (ri).

b, e, f each move toward the opposite twist ring,
In steps (4) to (6), one strand a, b and the other strand e, f intersect on the braided ring 6, and in steps (6) to (
8) One strand c, d and the other strand ej
At the same time, one strand asb and the other strands g and h cross each other on the braid ring 7, and in steps (8) to Ol, one strand c and d and the other strand g, strands h intersect on the braided ring 6, and in the process section ~ (b) both strands c, d, g, and h are connected to the king twisting rings 4 and 3, respectively.
be guided upwards. In the meantime, in steps +3), <4) and steps t9) and H, the clutch is operated (the one marked Δ) to stop both twisted wheels 3 and 4. In other words, the ring 5.6.
7 is characterized in that each of them acts as a group ring. Fourth
The figure is an organization chart of knitted knots that are braided based on such a knitted knitted braiding process.

What is shown in FIG. 5 is another embodiment, that is, after heating one of the net legs on the twisting wheel 3 and the other net leg on the twisting wheel 4 to the desired number of twists, 90° is taken as one step. This is an example of the knitting knot braiding steps shown in steps +I) to H, and step (1) is a state in which heating of the net legs has been completed. Steps (2) to (4) are the twisting rings 3 on both sides.
The strands a and e on the strands 6 and 4 move toward the opposite twisting ring, and in steps (4) and (5), one strand a and the other strand e intersect on the braided ring 6, and the process (
In 5) to (7), one strand C and the other strand e intersect on the braided ring 5, and one strand a and the other strand g intersect on the braided ring 7, and Steps (6) to (
8), one strand d and the other strand e are on the braided ring 5, and one strand a and the other strand h
are crossed on the braided ring 7, and in steps (7) to 2, one strand b and the other strand e are crossed on the twisting ring 3, and one strand a and the other strand f are crossed on the twisting ring 4. Then, in step (II −<11), one strand b
and the other strand g, h are on the braid 5, and one strand c, d and the other strand f are on the braid 7, one strand b and the other strand f in the process (b) ~ a wharf. intersect each other on the group ring 6.

In the meantime, in each process (21, (51, (81, Ql), 011), the clutch operation (marked with Δ) is performed to rotate the twisted wheels 3 and 4, and in process (7), the rotation of the assembled ring 6 is performed. Stop each.

During the above process, the twisting wheels 3 and 4 perform both a twisting function and a knotting function, and the wheels 5, 6, and 7 each have the characteristic of acting as a braiding ring. FIG. 6 is an organization chart of braiding based on such a knitting process.

As described above, according to the method for manufacturing a four-strand knotless net according to the present invention, a four-strand knotless net having the above-mentioned excellent properties can be made into four notches without using a dedicated knitting machine. By changing the function of the twisting ring in the conventional two-twist knotless net knitting machine, which has twisting rings and braided rings arranged in a straight line, to the function of the braided ring, it is possible to easily make four twists. This has the effect that a knotless net can be braided.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the arrangement of the spindle wheels of a conventional two-twist knotless net machine, Fig. 3 is a manufacturing process diagram, and Fig. 4 is a diagram showing the assembly obtained by the manufacturing process shown in Fig. 3. The organization chart of the section, Figure 5 is another manufacturing process diagram, and Figure 6 is. FIG. 6 is a tissue diagram of a knot obtained by the manufacturing process shown in FIG. 5;

Claims (1)

[Claims] Twisting rings and braided rings having four notches for transferring strands are arranged in a straight line in the following order: twisting ring → braiding ring → braiding ring → braiding ring → twisting ring. By arranging two strands and rotating the twisted rings in the same direction to form a net leg, the twisted rings and the braided ring are rotated in opposite directions to each other and temporarily stopped during the process, so that both twisted rings are rotated in the same direction. A method for producing a four-twist knotless net, characterized in that the strands are transferred via a braid to form an upward knot.