JPH11318275A - Sinking rope for fishery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To retain the direction of the flattened parts of individual weights in the same direction in the longitudinal direction of the sinking rope regardless of the variation in the core yarn twisting, even in the case where the weight is divided into a plurality of weight pieces, when the weights fixed around the periphery of the core yarn are made flat in their cross sections in order to utilize the plaited cord including the sinking core rope suitably as a construction material, in the fishery sinking rope in which the weights are fixed around the core yarn. SOLUTION: This fishery sinking rope wherein the weights are buried in the hollow axis core of the plaited cord 1 comprises the core yarn 3 extending along the longitudinal direction of the plaited cord 1 and weights 4 fixed to the circumference of the core yarn 3. The weights 4 are made flexible in the longitudinal direction by making flat in their cross sections, and the core yarn 3 is inhibited from causing increased or decreased twisting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishery sediment cord used for increasing the specific gravity of a net thread, a rope, etc., and more particularly to a lead wire around a flexible synthetic fiber core thread. The present invention relates to a fishery submerged rope in which such a heavy metal weight is fixed.

[0002]

2. Description of the Related Art In fishing nets and longline ropes (trunk lines) made of synthetic fibers such as polyester and nylon,
In order to use a lightweight mesh thread or rope with a specific gravity suitable for use in water, a metal weight with a large specific gravity such as lead is used as a sink wire extending along the longitudinal direction of the mesh thread or rope. Conventionally, it is buried in a net yarn or a rope.

[0003] As such a fishery sediment cord, for example, a flat strip-shaped lead formed by connecting substantially oval-shaped pieces or a linear lead having a constricted portion at a predetermined interval is used. For a band-shaped or linear weight that has been subjected to a process of giving flexibility in the longitudinal direction, a structure in which the outer peripheral surface is covered with a soft synthetic resin film has been used conventionally, In such a sedimentary cord, even if the weight is divided into a plurality of weight pieces in the longitudinal direction, each divided weight piece is covered with a synthetic resin coating, so that the length of the sedimentary cord in the longitudinal direction is reduced. Connectivity will be ensured.

[0004] However, in such a sediment cord, since the volume occupied by the synthetic resin material that forms the film is large, the specific gravity of the whole sediment cord is small by that much, and the same weight per length unit. The volume (thickness) of the wire becomes large and bulky, the diameter of the net yarn and rope wrapping the sedimentary cord increases, and the sedimentary cord for the predetermined number of fibers of the mesh thread and rope wrapping the sedimentary wire The conjugation (conjugation) is reduced.

[0005] Further, since soft vinyl chloride is mainly used as a synthetic resin material of the coating, the coating hardens when the ambient temperature decreases in winter, for example.
Flexibility and elasticity will be lower than the synthetic fiber (such as polyester) of the net yarn and rope wrapping the sediment cord,
As a result, there may be a case where the coating of the submerged cord is broken due to the bending of the mesh thread or the rope, and a part of the weight therein jumps out of the mesh thread or the rope and falls off.

[0006] On the other hand, a thin twisted yarn of synthetic fibers (a large number of filaments are twisted) so that the flexibility and connectivity in the longitudinal direction of the sediment cord can be ensured without providing a synthetic resin coating. Yarn) as a core yarn, and a vertical wire having a substantially circular cross section (hereinafter, a cross section in a direction perpendicular to the longitudinal direction is simply referred to as a cross section) is used as a weight, for example, the axis of the vertical wire along the longitudinal direction of the vertical wire. A groove is continuously provided to reach the core, a lead wire is caulked after the core yarn is introduced into the groove, and a lead wire having the core yarn buried in the center is formed, and a plurality of lead wires are formed in the longitudinal direction. 2. Description of the Related Art A sedimentary cord having a structure in which a plurality of weight pieces are fixed at predetermined intervals around a core thread by a method of dividing the weight pieces into a plurality of weight pieces has conventionally been known.

[0007]

In a fishery knotless net made of synthetic fiber such as polyester, for example, two braids having a hollow core embedded with a cordless wire are twisted together (2). In the case of forming a net (by twisting), it is desirable to reduce the maximum diameter of the net yarn in a state where the braids are twisted together in order to reduce the running resistance of the net in water.

Therefore, when a braid is formed by twisting two braids to form a net (including a case where two braids are further twisted together), as shown in FIG. FIG. 4 (B) shows that the cross-sectional shape of the braided cable 2 embedded in the hollow shaft core of each braid 1 is made to be flat and the cross-sectional shape of the braid 1 in which the sedimentary cord 2 is buried is made almost flat. As shown in the figure, the net yarn in a state in which the braids 1 are twisted with each other as compared with a cross-sectional shape of the submerged cord 2 which is substantially circular and a cross-sectional shape of the braid 2 in which the submerged cable 2 is embedded. Can be reduced in maximum diameter.

Further, in order to use the same amount of weight and braid to keep the thickness of the braid in a state in which the sedimentary cord is buried as small as possible, the surface of the weight is covered with a synthetic resin film. It is inappropriate to use a child cable, and it is necessary to use a sink cable having a structure in which a weight is fixed around a core thread.

That is, as the sediment cord to be embedded in the braid for forming the net, a cord having a weight fixed around the core thread and having a flat cross section is used. Although it is desirable to perform such a method, in a submerged cable having such a structure, a plurality of band-shaped weights are laid after the core thread is buried along the longitudinal direction in the shaft core of the band-shaped weight having a flat cross section. When divided into weight pieces, tension is applied to the sediment cords, so that the twist of the core thread increases or returns at the portion between the weight pieces, thereby causing the core thread to The flat directions of the plurality of fixed weight pieces are different from each other.

Since the flat directions of the plurality of weight pieces fixed to the core yarn are different from each other, irregular irregularities are generated on the surface of the sediment cord, and the sediment cord is buried inside the braid. Occasionally, the projections due to the irregular asperity rubbed on the guide for guiding the sediment cords, causing the weight pieces to peel off from the core thread, and such irregular asperities on the surface. Irregular irregularities appear on the surface of the braid in which the sedimentary cord in the state is buried, following the shape of the sedimentary cord.

After the band-shaped weight is embedded in the braid,
In the case where the band-shaped weight is divided into a plurality of weight pieces from the top of the braid, or in a braid in which the band-shaped weight with the embossed groove formed on the surface is embedded, the part of the embossed groove is bent. Even in the case where it is cut, irregularities on the surface of the braid follow the inner sedimentary cord by increasing or twisting the twist of the core thread of the cord in the braid. Will appear.

[0013] The appearance of irregular irregularities on the surface of the braid not only causes poor appearance as a product, but also, for example, when such a braid is twisted to form a net, Irregular irregularities are formed in the surface in the longitudinal direction, the running resistance of the net becomes unstable, and the net yarn is easily worn when rubbed.

An object of the present invention is to solve the above-mentioned problems. Specifically, in a fishery sediment having a weight fixed around a core thread, the sedimentary cord is used. In order to make the embedded braid suitable as a constituent material such as a net, when the weight fixed around the core yarn has a flat cross-sectional shape, even if the weight is divided into a plurality of weight pieces, It is another object of the present invention to prevent the flat direction of each weight piece from being changed in the longitudinal direction of the sediment cord due to a change in the twist of the core yarn.

[0015]

According to the present invention, in order to solve the above-mentioned problems, the present invention is to be buried in a hollow shaft core portion of a braid as described in claim 1 above. Consisting of a core thread extending along the longitudinal direction of the braid and a weight fixed around the core thread, for imparting flexibility in the longitudinal direction to the weight fixed around the core thread. In the fishing submerged ropes as described above, the weight has a flat cross-sectional shape, and the core yarn does not cause twisting or untwisting. is there.

[0016] Further, in the fishing submerged rope according to the first aspect, as described in the second aspect, the core thread has a flat cross-sectional shape. is there.

[0017] Further, in the fishing submerged rope according to the first aspect, as described in the third aspect, the core yarn is a monofilament yarn.

In the fishing submerged rope according to any one of the first to third aspects, as described in the fourth aspect, each of the weights is provided as a treatment for imparting flexibility to the weight in the longitudinal direction. So that the pieces are connected by a core thread at a predetermined interval,
The weight is divided into a plurality of weight pieces in the longitudinal direction.

In the fishing submerged rope according to any one of the first to third aspects, as described in the fifth aspect, the treatment for imparting flexibility to the weight in the longitudinal direction is performed in a strip shape. The surface of the weight is provided with cutable grooves at predetermined intervals along the longitudinal direction of the extended weight.

[0020] In the fishery sediment according to the first to fifth aspects, as described in the sixth aspect, the sedimentary cord is formed by an ultra-thin tape extending along the longitudinal direction. The braid is buried in the hollow shaft core of the braid with most of the outer surface being covered.

[0021] Further, in the fishing silt according to any one of claims 1 to 6, as described in claim 7, the braid for embedding the sediment cord is a net thread for forming a net. It is characterized by being.

Further, in the fishery cord according to the seventh aspect, as described in the eighth aspect, the braid for burying the cord forms a knotless net by twisting two children. Characterized in that it is a mesh thread for

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a partial view of a braid in which a submerged cord according to the present invention is buried, and a braid 1 for forming a net.
Is made of synthetic fiber such as polyester,
It is formed by knitting a plurality of filaments obtained by twisting or bundling a large number of filaments into a hollow tube, and a sediment cord 2 embedded in the hollow shaft core of the braid 1 is a single strand made of synthetic fiber. The weight 4 is composed of a core thread 3 and a lead (or lead alloy) weight 4 fixed around the core thread 3, and the weight 4 is formed such that its cross-sectional shape is flat.

The flatness of the weight 4 is not particularly limited to a constant value, but the thickness t of the weight 4 is set to clarify the difference from the one having a cross section close to a circle. And the width w is set to t / w ≦ ２.

FIG. 2 shows an embodiment of the sinker cable of the present invention wrapped in a braid as described above. In this embodiment, the core thread 3 has a flat cross section (for example, A flat monofilament yarn made of a synthetic fiber such as polypropylene formed so as to have a thickness of 0.2 mm and a width of 1.0 mm), and a plurality of weights 4 fixed to the core yarn 3 at predetermined intervals. The weight pieces 4a are divided so that each of the weight pieces 4a has substantially the same flat surface,
It is swaged to the core yarn 3.

FIG. 3 shows another embodiment of the submerged cord according to the present invention. In this embodiment, the core thread 3 is formed as shown in FIG.
Is a flat monofilament yarn such as polypropylene as in the embodiment shown in FIG. 1, but the weight 4 is a single band extending along the longitudinal direction of the core yarn 3. At predetermined intervals along the longitudinal direction, cutable embossed grooves 4b are formed on the surface.

By the way, it is possible to manufacture the submerged cord having the structure shown in each of the above embodiments by an appropriate method, for example, along the longitudinal direction of a vertical line having a circular cross section. A groove is continuously provided to the axis of the lead wire by the incision roll, and the core yarn is introduced into the axis of the lead wire by the groove, and then a pair of pressing rolls are used to close the opening of the groove. It can also be manufactured by pressing the lead wire into a flat band shape and then stamping the lead wire at a predetermined interval with a pair of stamping rotating rolls.

In such a case, by adjusting the number of revolutions of the embossing rotary roll (the peripheral speed of the rotating engraved tooth tip), as shown in FIG.
Only the flat lead band is cut into a plurality of weight pieces 4a and separated at predetermined intervals on the core yarn 3, or, as shown in FIG. 3, the weight 4 which is a lead band is cut. Without this, it is possible to provide an embossed groove 4b that can be cut at a constant interval in the band-shaped body, or to appropriately select the embossed groove 4b.

For the production of the sedimentary cord, besides producing the sedimentary cord separately from the braid, for example, a lead wire having a circular cross section and containing a core thread may be provided with an embossed groove or a plurality of grooves. After being separated into weight pieces, the braid is covered with the braid, and then the braid is pressed to crush the lead wire into a flat shape from above the braid in a longitudinal direction. It is also possible to manufacture by flattening the weight with the braid maintaining the directionality of the flat surface of the weight so that the flat surface of the weight becomes the same plane at each part of the weight.

According to the sediment cord having the structure shown in each of the above-described embodiments, it is possible to achieve a higher specific gravity with a lower volume compared to a sediment cord having a synthetic resin coating. Can improve the conjugation property (conjugation property) of the sediment cords, and can also ensure sufficient flexibility and flexibility, and twist the braids in which the sediment cords are embedded. In the case of knitting, it is possible to obtain excellent sedimentation that suppresses the net from being loosened by the tidal current while maintaining the flexibility of the net.

Further, since the weight of the sedimentary cord is flat, compared to the case where the cross-sectional shape of the weight is substantially circular, two braids in which the sedimentary cord is embedded are twisted together to form a net (for example, a net). , Knotted nets, etc.), the maximum diameter of the net yarn can be reduced, so that the resistance of the net to running water in water can be further reduced, and the net fabric can be cut off by the tidal current. He can be further reduced.

Further, since the core thread of the sedimentary cord is flat, the weight and the core thread are more rigid when the weight is swaged to the core thread than when the core thread has a substantially circular cross section. The weight can be swaged against the core yarn in a uniform state in the longitudinal direction of the core yarn without being shifted.

Further, since the core thread of the sediment cord is not twisted, the weight is separated into a plurality of weight pieces in order to provide sufficient flexibility in the longitudinal direction, or the flexibility is reduced in the longitudinal direction. Even if the embossed groove cut into the weight to give the weight is cut due to the bending of the subductile, each weight piece (each separated weight piece or the weight cut at the part of the embossed groove) In each of the portions, the twisting and untwisting of the core yarn does not occur, and the flat surface of the weight can be maintained in the same plane in the longitudinal direction of the sediment cord.

As a result, when embedding the sediment cord in the braid,
(The protrusions that can be formed into a sludge due to irregular unevenness due to the unevenness of the flat surface of each weight piece in the longitudinal direction rub against the guide) The weight piece is peeled from the core thread by the guide that guides the sludge cable Since no irregularities appear on the surface of the braid where the sedimentary cord is buried, when the braids where the sedimentary cord is buried are twisted and knitted, No irregularities are formed on the surface in the longitudinal direction.

As described above, the fishing silt of the present invention has been described in each embodiment. However, the present invention is not limited to each of the above-described embodiments. It is not limited to the case where it is used for net yarn, but it can also be used for a longline rope (trunk line) and other fishing gear.

The specific structure can also be appropriately changed in design. For example, a narrow woven tape or other core yarn having a flat cross section may be used as the core yarn of the sediment cord. By using a monofilament yarn having a substantially circular cross section or a twisted yarn that has been subjected to a process for fixing twist (for example, heat treatment), there is no need to worry about increased twisting or untwisting. Is also feasible.

That is, even when a narrow woven fabric tape is used as the core yarn of the sediment cord, since the core yarn has a flat cross section, it does not shift when the weight is swaged to the core yarn. The weight can be caulked in a uniform state in the longitudinal direction of the core yarn, and since the core yarn has no twist, the direction of the flat surface of the weight does not change due to increased twisting or untwisting of the core yarn. In addition, the flat surface of the weight in the longitudinal direction of the sediment cord can be maintained in the same plane.

Further, even when a monofilament yarn having a substantially circular cross section or a twisted yarn having a substantially circular cross section subjected to a twist fixing treatment is used as the core yarn of the sediment cord, the core yarn of the flat monofilament yarn may be used. In comparison, although there is a risk that the weight may shift when caulking to the core yarn, considering this point, if the sedimentary cord is manufactured, the twisting and untwisting of the core yarn will not occur, so the flat surface of the weight Can be maintained in the same plane in the longitudinal direction of the sediment cord without changing the direction.

Further, when embedding the sedimentary cord in the hollow shaft core of the braid, it is necessary to simply embed the sedimentary cord directly in the hollow shaft core of the braid. Embedding the sedimentary cord through the ultrathin tape in the hollow shaft core of the braid with the ultrafiltration tape wrapped around the outer surface of the sedimentary cord with the ultrathin tape extending along It is also possible.

That is, for example, when knitting a braid using a braid in which a sedimentary cord is buried as a netting, when knotting the ends of the netting with each other, the knotting is made as small as possible.
When it is necessary to remove about 15 cm of the weight piece of the sediment cord buried in the braid, and when the net braided with the braid buried with the sediment cord becomes old and discarded, In order to separate and dispose of lead and fiber, it is necessary to extract a submerged cord buried in the braid.

In such a case, the sedimentary cord is buried in the hollow shaft core of the braid in a state where the outer surface of the sedimentary cord is mostly covered with an ultra-thin tape. Can be prevented from becoming entangled with the fine fibers (filaments) on the inner surface of the braid, making it difficult to remove the sedimentary cord from the braid, thereby eliminating the work of knitting and sorting and sorting of the old net. Work can be facilitated.

For an ultra-thin tape used for such a purpose, for example, a thickness of 0.02 mm ± 0.
A soft vinyl chloride film (thickness of 0.3 mm ± 0.0 mm), such as a polyethylene tape having a thickness of about 01 mm, which is used for a sediment cord covered with a conventional synthetic resin film.
(About 5 mm), the cross-sectional area ratio between the ultra-thin tape and the coating when each is wound around a 1.3 mm diameter lead wire is 0.
08 mm ² /1.51 mm ² ≒ 1/19, having a heterogeneous thickness. Even if such an ultra-thin tape is used, a sediment line covered with a conventional synthetic resin film can be used. There is no such disadvantage as described above (the disadvantage as already described in the section of “Prior Art”).

[0044]

As described above, according to the fishery sedimentary cord of the present invention, since there is no synthetic resin coating, a high specific gravity is achieved, and conjugation by the braid is improved. In addition, the flexibility and flexibility can be sufficiently ensured, and the weight is flat, so that the maximum diameter when the braids with the buried cords embedded therein are twisted can be reduced.

Further, in order to prevent the core yarn of the weight from being twisted or untwisted from occurring, the flat weight of the flat weight which has been subjected to a process for imparting flexibility in the longitudinal direction has the same flat surface in the longitudinal direction. And irregular irregularities in the longitudinal direction do not appear on the surface of the braid in which the cord is buried.

As a result, when the braids in which the sedimentary cords are buried are twisted and knitted, it is possible to maintain the flexibility of the nets and to suppress the wiping of the net by the tidal current, thereby achieving excellent sedimentation. Can be obtained, and furthermore, since irregularities are not formed on the surface of the mesh yarn in the longitudinal direction, it is possible to further reduce the wiping of the mesh by the tide, and when the mesh yarn is rubbed. Can be reduced.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional plan view showing a braid in which a sediment cord of the present invention is embedded.

2A is a plan view, FIG. 2B is a side view, and FIG. 2C is a cross-sectional view taken along line XX of FIG.

FIG. 3A is a plan view and FIG. 3B is a side view showing another embodiment of the sediment cord of the present invention.

FIG. 4 shows a state in which a braided cord having a flat cross section is used and (B) a sediment cord having a substantially circular cross section is used in a state in which braids in which the cord is embedded are twisted together. Explanatory drawing which shows each of the cases.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 Braid 2 Sinking cord 3 Core thread 4 Weight 4a Weight piece 4b

Claims (8)

[Claims] 1. A core yarn embedded in a hollow shaft core portion of a braid, the core yarn extending along a longitudinal direction of the braid, and a weight fixed around the core yarn. The weight fixed to the periphery of the fishing submerged rope is subjected to a treatment for imparting flexibility in the longitudinal direction, the weight has a flat cross-sectional shape, and the core A fishing silt, wherein the yarn does not cause twisting or untwisting. 2. The fishery sediment cord according to claim 1, wherein the core yarn has a flat cross-sectional shape. 3. The fishery cord according to claim 1, wherein the core yarn is a monofilament yarn. 4. A process for imparting flexibility to the weight in the longitudinal direction, wherein the weight is divided into a plurality of weight pieces in the longitudinal direction so that the weight pieces are connected at predetermined intervals by a core thread. The fishery silt cord according to claim 1, wherein: 5. As a process for imparting flexibility to the weight in the longitudinal direction, cutable embossed grooves are formed on the surface of the weight at predetermined intervals along the longitudinal direction of the weight extending in a strip shape. The fishery silt cord according to claim 1, wherein: 6. The sedimentary cord is embedded in the hollow shaft core of the braid in a state where most of the outer surface is covered by an ultrathin tape extending along the longitudinal direction. The fishing silt according to any one of claims 1 to 5. 7. The fishery sediment cord according to claim 1, wherein the braid for burying the sediment cord is a net thread for forming a net. 8. The fishing cord according to claim 7, wherein the braid for burying the cord is a yarn for forming a knotless net by twining.