JPH0144286B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a knotless fishing net used as a purse seine, etc., and particularly relates to a knotless fishing net with two twists and four penetrating wires, and a method for knitting the fishing net. be.

(Prior Art) Generally, in this type of knotless fishing net, the net is continuously knitted from the body part to the edge, and in order to form a mesh, the intersecting parts of two strands are passed through each other, They are engaged in a so-called four-penetration type. This four-penetration type of engagement has the same engagement configuration not only at the body net portion but also at the edge portion. When a net fabric with such a structure is used, for example, as a purse seine, the purse seine is made by sewing together multiple threads of fabric, and the edges are used for the stitching part of the net fabrics and the part for tying them to the rope. be done.

However, the edge of a conventional knotless fishing net becomes a twisted part immediately from the penetrating part of the strands, just like the fishnet part, so when a large force is applied to the edge, the penetrating part pushes away the twisted part and the adjacent part becomes a twisted part. The legs of the net begin to move to the side, and the mesh near the edge becomes uneven, causing fishing to be carried out, which not only reduces the performance of the fishing gear, but also weakens the strands as they rub against each other, causing the net to break. It's summery. Therefore, it is generally necessary to use slightly thicker strands to reinforce the edges and tether them so that the penetrating portions do not shift. This attachment has to be done manually and tied to the edges, which has the drawback of requiring a great deal of time and effort.

(Object of the Invention) The present invention has been made in order to eliminate the drawbacks of the conventional example described above, and its purpose is to greatly improve the strength of the edge, and to improve the intersection of the parts forming the edge.
That is, it is an object of the present invention to provide a knotless fishing net in which no displacement of the penetrating portion occurs and a method for knitting the fishing net.

(Structure of the invention) The present invention has been made to achieve this object.
In a knotless fishing net with four penetrating strings twisted with two strings, the net thread that reaches the edge is meandered twice,
During the meandering, each mesh yarn forms three six-wire penetration parts and two first stitch intermediate crossing parts, so that the edge is substantially formed by two mesh yarns. It is a knotless fishing net, and not only does the edge have 6 threads through it due to two meandering strings, making the intertwining of the strings strong, but also the edge has two threads. Because it is formed from strands, it has excellent strength without the need to add extra strands. Further, in the method of knitting a fishing net, a knotless fishing net is provided, characterized in that four strings of two net threads are crossed with each other before and after forming the six penetration parts to form a double-cross part. The method of knitting a net with a slight twist between the 6-penetrating part and the double cross part, the process of waiting for multiple strings when forming the 6-penetrating part, and the formation of the 6-penetrating part This is a knitting method that uses a clutch to perform the steps of rotating and untwisting the yarn by the amount of time that was awaited, and 6
By providing a double cross section and a slight twist at the front and back of the main penetration part, it will not shift even if an external force is applied to the 6-penetration part, making it stable. Furthermore, when forming the 6-penetration part, the string By waiting for this, a complex intertwining can be formed, which also prevents the six through-holes from shifting.

(Embodiment) Next, the present invention will be described in more detail based on the illustrated embodiment.The net 11 shown in FIG. This is a knotted fishing net, which is woven in the direction of arrow a. In this knotless fishing net, code 12
The part is the body net part, and 13 is the edge part. In forming this edge 13, for example, the net yarns 14, 15, 16 knitted from the body net portion 12 are first knitted to form the edge 13.
The mesh threads 17 and 18 reaching 3 are successively braided to form an edge, and then U-turned again to the side of the body net 12 to form a body net. In this case, the mesh yarn that has reached the edge meander twice, forming a double edge, and a half-stitch is formed at the edge, and six mesh yarns are formed between it and the body net portion 12. A mesh is formed through the holes. In other words, the mesh threads 17, 1 that reach the edge first
8 and the mesh thread 14 that reaches the edge from behind are braided together, six threads pass through the braid, and the mesh thread 17, which reached the edge first, passes through the six threads and moves to the side of the body mesh section 12. Make a U-turn. Then, the two mesh threads 14 and 18 form an edge, and then a six-through braid is made between the mesh thread 15 that reaches the edge, and the mesh thread 18 forms the body mesh part 1.
A U-turn is made to the 2nd side, and the edges are formed in the same way thereafter. With two meanderings at the edge of the mesh yarn,
The edge becomes a double structure, but the net yarn that reached the edge later at the six-penetration part is located on the outside of the double layer structure, and crosses with the net yarn that reached the edge first at the top of the half. It enters the inside, intertwines at the 6-piercing part, meandering further toward the edge, exits at the cross at the top, and then exits to the body net part 12 side via the 6-piercing part. . The double-layered mesh thread at the edge is the top part forming the half mesh, that is, the mesh forming part 12 of the mesh part 12.
Both mesh threads cross at a position corresponding to the main penetration part, and at this cross, one string passes through each other and is entwined so as not to be separated.

As shown in FIG. 2, the four-penetrating portions of the body net portion 12 are formed by twisting two strings each of the net yarn 15 and the net yarn 17, and intersect with each other to form the net. The sections are braided by penetrating each other, and this kind of four-penetration braiding method is carried out as is, as is known.

As shown in FIG.
When they cross, each one string passes through each other so that the outer mesh yarn 15 goes inside and the inner mesh yarn 14 comes out. By crossing in this way, both mesh yarns 14 and 15 are not separated even at the top where they form a half stitch.

The six penetrating portions constituting the edge 13 are shown in FIG. 4 in a first embodiment. This six-through portion is a braid of three mesh threads 14, 15, and 16, and is not a simple penetration, but is intricately entwined to prevent misalignment. This entanglement is caused by the strings 1 and 2 of the mesh thread 14 and the strings 3 and 4 of the mesh thread 15.
Just before the six strings pass through, a double cross part b is formed between them, the four strings join together to create a part that does not shift, and then a slight twist part c is formed, and then the net thread 16 The strings 5 and 6 are put together to form a six-through part d, and the net yarn 14 is taken out to the side of the body net 11, and the net yarn 15 is knitted as it is.
The mesh yarn 16 is taken out on the side forming the half stitch of the edge 13. Immediately after the six threads come out from the penetration part d, a predetermined twist part e is formed, and then the mesh thread 16 goes outside through the double cross part f, and the mesh thread 15 enters the inside to form a predetermined twist. added to form a thread foot.

In the second embodiment shown in FIG. 5, the twisted portions c and e of the first embodiment are omitted, and the other parts are the same, so the same reference numerals are used for explanation. Before the six mesh threads 14 and 15 pass through, the strings 1 to 4 of both mesh threads form a double cross part b, and immediately from the double cross part, the strings 5 and 6 of the mesh thread 16 are entwined and six threads pass through. The mesh yarn 14 is taken out to the side of the body net 11 to knit the body net, and the net yarn 15 and the net yarn 16 are taken out to the side forming the half of the edge 13, and immediately after being taken out. After forming a double cross section f, a predetermined twist is applied to each of the mesh yarns 15 and 16 to form a yarn foot. In each of the embodiments, double cross portions b and f are formed before and after the six through portions d so that the six through portions d do not shift.

The knitting method of the first embodiment will be explained with reference to FIG. 6, which is a schematic plan view showing the operating state of the twisting weight wheel and the braiding weight wheel. In the figure, numeral 21 is a twisting weight wheel, and 22 is a grouping weight wheel. These two spindle wheels are arranged alternately in the longitudinal direction, and only one row forming the edge 13 is shown in operation. That is,
After the strings 1 and 2 of the net yarn 14 and the strings 3 and 4 of the net yarn 15 are twisted for a predetermined length at the net legs of the edge 13 by the respective twisting weight wheels 21, the double cross shown in FIG. Enter the process of part b. At this time, the upper spinning weight wheel 22 located between both the net yarns 14 and 15 sequentially receives the strings 4 and 3 of the net yarn 15 from the twisting weight wheel 21, and the string 4 received earlier is directly transferred to the upper spinning weight wheel 21. At the same time, the string 1 of the net yarn 14 is delivered to the weight wheel 21, and the string 1 of the net yarn 14 is received from the upper twisting weight wheel 21, and the strings 2 and 4 are entangled by one twist in the upper twisting weight wheel 21. In the ring 22, the strings 1 and 3 are entwined by one twist, and the strings of both the threads 14 and 15 cross each other, and the strings are transferred from the braiding weight ring 22 to the upper twisting weight ring. 1 and return strings 3 and 4 to the twisting weight ring in the center to complete the double cross process. Next, the strings 1 and 2 of the net yarn 14 and the strings 3 and 4 of the net yarn 15 are twisted approximately once each by the twisting weight wheels in the upper and central portions, and then the six strings reach the penetration portion d. During this time, the mesh thread 16 reaches the edge 13
The strings 5 and 6 are twisted by a twisting weight ring 21 at the lowermost part to form a body net section 12.

When reaching the 6-penetration part d, remove the clutch of the uppermost twisting weight ring and the lowermost twisting weight ring to make it free.
Strings 2 and 5 so that rotation is not transmitted
At the same time, the upper string 1 is transferred to the center twisting weight via the upper assembling weight, and the lower string 6 is transferred to the center twisting weight via the center assembling weight. A total of four strings 1, 3, 4, and 6 are passed to the twisting weight wheel in the center.
will be gathered. At this point, the clutch engages and the upper and lower twist weight wheels also begin to rotate. And the string 2 that was left on the twisting weight ring at the top
is delivered to the upper assembling weight, and two strings 3 and 6 are also delivered from the center twisting weight to the upper assembling weight. At the same time, the string 5 remaining in the lower twisting weight wheel is transferred to the center spinning weight wheel, and the two strings 1 and 4 are also transferred from the center twisting weight wheel. During this time, the rotation of the upper and lower twisting weight wheels is half a rotation, and the upper and central twisting weight wheels and the center twisting weight wheel are rotating 3/4 of a turn.

Continuing with each ring's 3/4 turn, strings 3 and 6 are delivered to the upper twisting weight ring, strings 2 and 5 are delivered to the middle twisting weight ring, and strings are transferred to the lower twisting weight ring. 1 and 4 are delivered respectively. In this state, the clutches of the upper and lower twisting weight wheels are released again, and the strings 3, 6, 1, and 4 are allowed to wait, and the upper and center grouping weight wheels turn 1/4 to move the center twisting weight. Receive strings 5 and 2 from the weight wheels, and at this point engage the clutch to rotate all the weight wheels, transfer strings 5 and 2 to the upper and lower twist weight wheels, respectively, and in the next 1/4 turn. The string 3 is received from the upper twisting weight, and the string 4 is received from the lower twisting weight, and both strings 3 and 4 are delivered to the central twisting weight. After this process is completed, there are 6 through-holes d
is formed.

Furthermore, each string coming out of the six through holes forms a twisting part e of one rotation by the upper, middle, and lower twisting weight rings. In this case, in order to recover the one-rotation delay that was expected due to the clutch operation twice before and after the above-mentioned 6-wire penetration, the clutch is switched to the side where the gear ratio is doubled and the normal body is used. For each rotation of knitting the net, two rotations are performed, and the number of twisted portions e is increased by the amount of the delay. Then, after six strings of the net yarn 14 located at the lower twisting weight ring have passed through, the string makes a U-turn toward the body net side.

Net thread 16 has reached the edge again and finished penetrating 6 threads.
The mesh yarn 15 that had arrived with the strings 5 and 6 of
In the next step, the strings 3 and 4 form a double cross section f in the same manner as described above, and the upper twisting weight ring and the center twisting weight ring perform net twisting. In this case, since the double cross section f is of a penetrating type, the state of intertwining is somewhat different from that of the double cross section b, but the double cross process is the same. After a predetermined twisting of the net, the process of first stitch intermediate crossing as shown in FIG. 3 begins. The mesh twist in this case varies depending on the mesh size of the mesh to be manufactured, and can be changed as desired.

The first intermediate cross first receives the string 3 of the net yarn 15 located in the center twisting weight wheel at the upper spinning weight wheel, passes it to the above twisting weight wheel, and at the same time receives the string 3 of the net yarn 15 from the upper twisting weight wheel. The string 4 is received between the strings 5 and 6, and the string 4 is inserted between the strings 5 and 6 by passing the string 4 to the upper twisting weight ring, thereby forming the first stitch intermediate cross section. Then, the strings 5 and 6 of the net thread 16 are transferred from the upper braiding weight to the twisting weight in the center. The position where this intermediate intersecting part is formed coincides with the intersecting part of the net, and a predetermined twisting of the net is further performed from this intersecting part.
Moreover, at the time when this crossing part is completed, a new mesh thread is placed on the lower twisting weight ring for the next six penetrations, and the edge part 13 is formed in the same way.

The knitting method of the second embodiment shown in FIG.
The only difference from the embodiment is that there is no twisted part before and after the six through parts d, and the double cross parts b and f are immediately formed. Therefore, the process is shown in FIG. 7, and the same parts as in the first embodiment are given the same reference numerals to simplify the explanation.

That is, in the second embodiment, the strings 1, 2, 3, and 4 of the net yarn 14 and the net yarn 15 form a double cross portion f after twisting the net legs, and after forming the double cross portion, the upper part and Remove the clutch of the lower twisting weight ring to release it and wait for strings 2 and 5, and then attach the four strings 1, 3, 4, and 6 to the center twisting weight ring.
After 1/4 rotation, engage the clutch so that all the twisting weight wheels rotate, proceed with the 6-strand penetration process, remove the clutch once again in the middle, and repeat the same process as in the first embodiment. The 6-line penetration process is completed.
At the end of this process, the clutch is switched to the side where the gear ratio is doubled, the twist that was delayed during the six-strand penetration process is recovered, and the clutch is returned to its original position.

Then, after forming the six through parts d, the double cross part f is again formed, and then a predetermined mesh thread twisting is performed, and then the first stitch intermediate crossing is performed, further mesh thread twisting is performed, and the mesh thread 14 is twisted. It is the same as in the first embodiment that the strings 1 and 2 make a U-turn toward the fishnet side.

The above-mentioned clutch operation will be explained based on FIGS. 8 and 9. Two idler gears 24 and 25 are provided on the shaft 23 of the twisting weight wheel 21 on which the clutch is to be operated, and both idler A clutch 26 is provided between the gears, and the clutch 26 is configured to be able to selectively engage either of the two idler gears 24, 25 from a neutral position by means of an operating arm 27. The assembly weight wheel 22 is provided with fixed gears 29 and 30 that mesh with the floating gears 24 and 25, respectively, on its shaft 28, and the rotation of the shaft 28 of the assembly weight wheel rotates the twisting weight wheel via the fixed gear. It will be rotated. A fixed gear 31 is attached to the shaft 23 of the twisting weight wheel, which does not require any clutch operation, and meshes with a fixed gear 29 of the assembly weight wheel. The reference numeral 32 in the figure is what is called a weight or a gun in which a string of mesh yarn is housed.

In this clutch operation, when the clutch 26 is engaged with the idler gear 24, the rotation transmitted from the shaft 28 of the assembly weight wheel 22 is transmitted from the fixed gear 29 to the twisting weight via the idler gear 24 and the clutch 26. ring 2
If the gear ratio of the floating gear 24 and fixed gear 29 is the same, the assembly weight wheel 22
and the twisting weight wheel 21 rotate at the same rotation speed in synchronization. From this state, when the clutch 26 is lowered to the neutral position and disengaged from the floating gear 24, the floating gear 24 rotates freely and the twisting weight ring 21 no longer rotates. This state is the state in which the clutch in the six-piece penetration process is released.

Next, when the clutch 26 is engaged with the floating gear 25 side, the shaft 23 of the twisting weight wheel is driven from the floating gear 25 meshing with the fixed gear 30 of the twisting weight wheel via the clutch 26, and rotates to a predetermined degree. conduct. in this case,
The gear ratio between the floating gear 25 and the fixed gear 30 is 1:2.
By setting it to , the floating gear 25 rotates twice while the fixed gear 30 rotates once. By changing the gear ratio in this way, the twisting weight wheel 21 is rotated quickly, and the rotation and twisting delayed in the six-strand penetration process are recovered. Then, by this rotation and untwisting, the length of the fishnet part becomes the same as the net length, and fishing is eliminated and the net formation is good.

(Effects of the Invention) As explained above, the knotless fishing net according to the present invention is a knotless fishing net of a four-penetration type in which two strings are twisted, and the net thread that reaches the edge is meandered twice. As a result, the edges are double-layered, and sufficient strength can be obtained without adding extra strings, and by forming three 6-penetration sections, there is no misalignment at the edges. It has excellent effects.

Furthermore, in the method of knitting a knotless fishing net according to the present invention, the net yarn that has reached the edge is meandered twice and six-penetration portions are formed three times, and a double cross is formed before and after the six-penetration portions. By forming a part or a slight twist part, the six penetrating parts will not be misaligned, so even if external force is applied, there will be no drag and the net structure can always be maintained in a good condition. be effective.

Furthermore, complex entanglements can be formed by waiting a plurality of strings in 6-penetration, and the rotation and twist delayed by waiting can be recovered after forming complex entanglements. There is no length or shortness of the mesh legs at the edges, and there is an excellent effect of forming a knotless crossing area with no misalignment.

[Brief explanation of drawings]

Fig. 1 is a plan view schematically showing a part of the knotless fishing net with two twists and four penetrating rods according to the present invention, Fig. 2 is an enlarged view of the part shown by the circle in Fig. 1, and Fig. 3 is the first
Fig. 4 is an enlarged view of the first embodiment in which the intertwined parts shown in Fig. 1 are loosened;
The figure is an enlarged view of the second embodiment of the same part as FIG. 4, and FIG. 6 is a twisted weight ring and a set weight, schematically showing the main parts of the process of knitting the fishing net of the first embodiment. Operation map with wheels,
FIG. 7 is an operational diagram of the twisting weight wheel and the grouping weight wheel schematically showing the main parts of the process of knitting the fishing net of the second embodiment, and FIG. 8 shows the knitting weight wheel of the present invention. FIG. 9 is a schematic perspective view of the clutch portion used, and FIG. 9 is a sectional view of a portion of the same clutch portion. 1 to 6...String, 11...Knotless fishing net,
12... body net part, 13... edge part, 14-18...
Net thread, 21...twisting weight ring, 22...kumiun weight ring, 2
3, 28... shaft, 24, 25... floating cam, 26
...Clutch, 27...Operation lever, 29,3
0, 31... Fixed gear, 32... Weight or gun.

Claims (1)

[Claims] 1. In a four-through knotless fishing net with two strings twisted, the net thread that has reached the edge is meandered twice, and during the meandering, each of the six threads is twisted three times. A knotless fishing net characterized by forming a penetration part and forming two first stitch intermediate crossing parts, so that the edge part is substantially formed by two net threads. 2. In a method for manufacturing a knotless fishing net with four penetrations made by twisting two strings, the net thread that has reached the edge is meandered twice, and during the meandering, each thread passes through the six-penetration portion three times. At the same time, the first intersecting part is formed twice, the edge is formed by two mesh threads, and the four strings of two mesh threads are crossed each other before and after forming the six-penetrating part. A method for knitting a knotless fishing net, characterized in that a double cross section is formed by twisting the knotless fishing net. 3. The knotless fishing net knitting method according to item 2 above, characterized in that a slight twist is inserted between the six-penetrating portion and the double-cross portion. 4. In a method for manufacturing a knotless fishing net with four penetrations made by twisting two strings, the net thread that has reached the edge is meandered twice, and during the meandering, each thread passes through the six-penetration portion three times. At the same time, the first intersecting part is formed twice, the edge is formed by two mesh threads, and the four strings of two mesh threads are crossed each other before and after forming the six-penetrating part. a step of waiting a plurality of strings at the time of forming the six-penetrating portion, and a step of restoring the rotation and twist by the amount of waiting after forming the six-penetrating portion. A knotless fishing net knitting method characterized in that the above steps are carried out using a clutch.