JP3076279B2 - Ear scallop cultivation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for scallop cultivation, which is a method of scallop cultivation.

[0002] One of the scallop cultivation methods is called an ear-suspension cultivation method, in which a small through-hole is drilled at an appropriate place in the shell of a scallop, and a rope (in this application, referred to as an ear-suspension string) is passed through the small through-hole. (In this application, referred to as a parent rope.) A method is widely used in which a large number of scallops are suspended and the parent rope is suspended in the sea and cultured.

[0003] Conventionally, this ear-hanging culture method involves drilling a small through-hole in an appropriate place of a scallop scallop shell (see Fig. 1) and passing an ear-hanging string such as tex through a parent rope. On the front side of the scallop through a small through-hole formed by piercing the scallop, its free end is tied as shown in FIG. 9 to prevent the scallop from falling off.

That is, in FIG. 9, H1 denotes a small through hole formed in a scallop H, 2 denotes an ear hanging string, and the ear hanging string 2 is provided with a knot 2X at a point passing through the small through hole H1. . And
By making the diameter of the knot 2X larger than the small through hole H1, the scallop H is prevented from falling off the ear suspension string 2. Conventionally, all of the operations such as drilling of the small through-hole H1 with these drills, insertion of the ear hanging string, formation of the knot, and the like have been performed manually.

However, since the above manual work is very complicated, automation has recently been proposed. The biggest problem in automation is that the retaining molding process using the knot 2X is not suitable for mechanization and cannot be unexpectedly realized.
Therefore, the conventional automation, that is, the mechanization is performed by using the knot 2X
Instead of the retaining method described above, a hot melt expansion method shown in FIG. 10 and a crush expansion method shown in FIG. 11 have been proposed.

[0006] In the heat melting and expanding method shown in FIG. 10, a thermoplastic resin is used for the ear suspending cord 2, and the tip of the ear suspending cord 2 through the small through hole H 1 of the scallop H is connected to a heater plate (not shown). To form a ball-shaped enlarged portion 2Y at the tip as shown in the figure.

In the crushing and expanding method shown in FIG. 11 described above, a large mechanical crushing force is applied to the tip of the ear suspension string 2 through the small through hole H1 of the scallop H, and the crushing and expanding section is performed. 2Z is provided.

[0008] However, in the above-mentioned hot-melt expansion method, when drilling a hole in a shell, the shell is hard and must be sprayed with water for lubrication. There has been a problem that the heater may be damaged or the heater may be cooled by lubricating water, so that heating cannot be performed uniformly. In order to solve this problem, the distance between the drill and the heater may be increased (the distance between the drill and the heater may be set apart so that lubricating water does not reach the heater).
However, when the next step is performed by moving the ear hanging string 2 for a long distance after passing through the ear hanging string 2, the apparatus becomes complicated, such that the apparatus holding the tip of the ear hanging string 2 also needs to be moved together. This was a problem.

It is also pointed out that scallop H is suitable for a low-temperature growth environment, and that the use of a heater may increase the mortality due to the effect of heating.

The crushing and expanding method shown in FIG. 11 is very efficient and is most easily mechanized. Since no heater is used, the scallop H is less adversely affected by temperature. Surprisingly, a problem has been pointed out that the cultivation efficiency of the scallop H is slightly reduced. Although the official measurement result is not clear, the one employing the crushed enlarged portion 2Z of FIG. 11 per year compared to the one employing the knot 2X of FIG. There is a report that growth is slow by about 30%.

Then, the crushed enlarged diameter portion 2 of the example shown in FIG.
It is presumed that the main reason that the cultivation method employing Z slows the growth of the scallop is that this method makes it difficult for the scallop H to open its shell. That is, in the crushing expansion method, since the diameter expansion rate of the crushing expansion portion 2Z as a stopper is limited, the difference between the diameter of the ear hanging string 2 and the diameter of the small through hole H1 cannot be set too large. That is, the diameter L1 of the ear hanging string 2 and the crushed enlarged diameter portion 2
If the maximum width L2 of Z and the diameter of the small through hole H1 are L3, then L
The condition of 1 <L3 <L2 is required. However, since the difference between the diameter L1 of the ear hanging string 2 and the maximum width L2 of the crushed enlarged diameter portion 2Z is small, the difference between L1 and L3 cannot be set large. Become.

Further, in order to reliably obtain the crushed enlarged diameter portion 2Z, a relatively hard ear suspension string 2 must be used.
It is described that the bendability of the ear hanging string 2 tends to be small, and the difficulty in bending of the ear hanging string 2 also hinders the opening and closing of the shell, thereby delaying the growth of the scallop.

[0013]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a small through hole H1 suitable for mechanization and having a diameter larger than the diameter of the ear hanging string is formed in the scallop H. An object of the present invention is to provide a scallop ear hanging method that can be pierced.

[0014]

In order to achieve the above object, the present invention relates to a method in which a plurality of resin-made ear suspension strings 2, 2, 2,... , And scallop H at both ends of each of the resin ear suspending cords 2, 2, 2,..., And the free end of the resin ear suspending cord 2 in a small through hole H1 opened at an appropriate position in the shell. In the method of hanging ears of a scallop in which the side is inserted and hung, the parent rope 1 is formed by using a material which is easy to bend with the resin ear hanging string 2.
The tip free end portion of each resin ear suspension string 2 that has passed through the small through hole H1 of each scallop H from the side is bent, and the bent portion is crushed until the cross-sectional shape of the suspension string 2 changes, thereby bending the habit. Is prevented from returning, and the bending habit preventing portions 21c, 2
1c is formed to suspend the scallop H. Technical measures are taken.

Therefore, according to the present invention, the free end portion of each resin-made ear hanging string 2 is bent to form the bending habit preventing portions 21 and 21 so that the scallop H is hung, so that it is bent. With the shape and size, it is possible to form the retaining member having an appropriate shape and size irrespective of the diameter of the resin ear suspending cord 2.

Further, in the present invention, since the loop and spiral bending habit preventing portions 21a and 21a or the zigzag bending habit preventing portions 21b and 21b are formed, these bending habit preventing portions 21a, 21a, 21b and 21b are formed. Has an effect that an appropriate size can be easily mechanically realized irrespective of the diameter of the resin ear hanging string 2.

Further, according to the present invention, the bending habit is provided so that the bending portion is crushed until the cross-sectional shape of the hanging string 2 is changed so that the bending habit does not return. The bending of the habit prevention portions 21c, 21c is fixed to exhibit a long-term retaining action.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the figure, 1 is the parent rope,
.., 2, 2,... Are resin suspending strings through which the parent rope 1 is inserted in the orthogonal direction.

The parent rope 1 is made of a suitable material having a relatively large diameter and having sufficient strength and durability to suspend a predetermined number of scallops H in the sea. You are using a rope. It is desirable to select and use a relatively loosely knitted rope for the parent rope 1 so that the resin ear suspension string 2 can be easily inserted.

The resin ear suspension string 2 is a synthetic resin material formed into a linear shape having a diameter of about 0.3 to 1.0 mm. Conventionally, a relatively flexible material such as tex (made of synthetic resin) is used, but in the present invention, a relatively elastic material such as gut or nylon resin having properties close to the gut when bent relatively hard. A material which is not easily bent and has a tendency to bend is used. That is, the resin ear suspension string 2 is not made by spinning a fiber into a yarn and knitting the yarn into a string, but by using a synthetic resin material having a solid linear shape having a predetermined diameter. I have.

Then, a plurality of resin-made ear hanging cords 2, 2, 2,... Having a predetermined length are inserted into the parent rope 1 at appropriate intervals in the orthogonal direction, and the resin-made ear hanging cords 2, 2, 2,. ... small holes H1 with scallop H at each end and a shell drilled in place
It is the same as in the prior art that the free end side of the resin ear suspending cord 2 is inserted into and suspended from the inside.

The length of the main rope 1 is usually several meters to several tens of meters, and each of the resin-made ear suspension strings 2, 2, 2,... The scallops H, H are hung in a distributed manner at both ends of each resin ear suspension string 2 inserted through the parent rope 1 at intervals of centimeters. Therefore, one parent rope 1
, About 150 to 300 scallops H, H, H... Are suspended.

The present invention uses each of the above-mentioned resin ear suspension cords 2 which is made of a material having a tendency to bend, and which is passed through the small through hole H1 of each scallop H from the parent rope 1 side. 2
Of the free end portion of the scallop, and the bent portion is crushed until the cross-sectional shape of the hanging string 2 changes so that the bending habit does not return. H is suspended.

In the present application, the term “bending of the resin ear hanging string 2” refers to bending or bending the resin ear hanging string 2 to bend once or several times to obtain the tip of the resin ear hanging string 2. A large-diameter portion that cannot pass through the small through hole H1 similar to the conventional knot is formed in the portion, so that the scallop H does not fall off.

The bending of the resin ear hanging string 2 is shown in FIG.
Or any other suitable shape as shown in FIG. 5, such as bending the resin ear hanging string 2 at a predetermined angle,
It can be implemented by rolling or embossing. The embodiment in which the resin ear suspending cord 2 is bent or wound will be described with reference to FIGS.
Is formed intermittently in the horizontal direction, and a part of a pair of scallops H, H is pressed against the parent rope 1 in the transportation path R1 and held as a double-layered sheet through the parent rope 1. The intermittent transfer is performed together with the transfer of the parent rope 1.

A drill 10 that moves up and down is provided in the middle of the transfer path R1, and a small through hole H1 is opened in the scallop H, H that is stopped during the intermittent transfer. The drilling of the small through-hole H1 by the drill 10 is performed by lowering the drill 10 with the scallops H, H fixed and performing both scallops H, H at once (the drill blade passes through the parent rope 1 interposed in the middle as well). The drill 10 is raised to the standby position when the drilling is completed, and the resin ear suspension string 2 is sent out from below.

The above-mentioned ear suspension string 2 made of resin is sent upward and passed through the lower scallop H, the parent rope 1 and the upper scallop H in this order, and cuts the lower end, but is inserted into the small through hole H1 of the scallop H. At this time, the inside of the two pairs of chuck mechanisms 11a and 11b are inserted. This is the chuck mechanism 11
The upper and lower chuck mechanisms 11a and 11b are arranged above and below the two scallops H and H, respectively (see FIG. 6).
11b is adapted to move from the lateral direction. )
The resin ear suspending cords 2 passing through them can be clamped respectively.

One of the chuck mechanisms 11a and 11b is fixed and one of them is rotatable, and forms a pair. By rotating as shown by the arrow in FIG. 7, the resin ear suspension string 2 (see FIG. ) Are formed at the end of the loop.

That is, two ends of the resin ear suspension string 2 passed through the small through hole H1 of the scallop H are fixed at one place and one is fixed and the other is moved. A bent portion can be formed by moving both sides of the resin ear suspending cord 2 in different directions. However, the bent portion needs to have a size and a shape that cannot pass through the small through hole H1 as a retainer. It is not possible to exhibit the retaining function only by bending it at an obtuse angle, so if it is bent, it is necessary to change and bend it by changing a plurality of bending points and directions. In order to bend multiple times as described above, it is necessary to change the holding position, and if such movement is mechanized, it becomes complicated,
When two points are sandwiched, it is preferable to fix one and turn the other as described above, or to turn both in the opposite direction.

In the example of the apparatus shown in FIG.
1, the opening of the H1, the insertion of the resin ear suspension string 2, and the formation of the bending habit preventing portions 21 and 21 are performed while the transfer path R1 is stopped and the scallops H and H are fixed and held by the holding device or the like. It is performed in the state, and the displacement etc. accompanying transfer are prevented.

Further, the bending habit can be formed by embossing as another embodiment. That is, the embossing can be performed by sandwiching the resin ear suspending cord 2 between the male and female dies, and furthermore, by embedding it into a gear, a groove drum, or the like. Specifically, in order to form the zigzag bending habit preventing portions 21b, 21b of FIG.
It is sufficient to pass between a pair of rotating disk groups 12 and 12 as shown in FIG.
2 and 12 are passed inward from the front side in the figure in parallel with the rotation center axes), and the rotating disk groups 12 and 12 are substantially the same as the groove drum. Similar zigzag bending habit preventing portions 21b, 21b can be formed even when the tip of the resin ear hanging string 2 is inserted into a pair of gears which are loosely engaged with each other so as to bite. Further, in the case where the above-mentioned male type and female type are used, although not shown, it is possible to form bending habit preventing portions 21 of various shapes.

Further, according to the present invention, the bending portion is provided with a hanging string 2.
The scallop H is suspended by crushing the scallop H so that the scallop H is not returned by crushing until the sectional shape of the scallop changes. That is,
When the wire is crushed in the bent state as shown in FIGS. 4 and 5, the deformation of the bent portion is fixed, and the bending habit can be prevented from returning.

[0033]

As described above, according to the present invention, the scallop H is prevented from falling off from the synthetic resin hanging string 2 due to the bending habit of the synthetic resin hanging string 2. It is possible to provide a scallop ear-suspended culturing method that can surely prevent the scallop from falling out without using an agent, a heater or the like.

In particular, the use of an adhesive has a problem of chemical influence on the scallop H, and the heater also has an adverse effect on the scallop as described above. However, when these adhesives and heaters are used, long-term use is not possible. It is said that the scallop H falls off and the yield of cultivation is poor due to a decrease in adhesive strength and insufficient heat melting in the cultivation. It can provide a method.

Further, in the present invention, since the retaining is performed by the bending habit, the size and shape of the retaining can be freely set, and the difference in diameter between the small through hole H1 and the resin ear hanging string 2 is determined by the scallop H Can provide a scallop ear-hanging culture method that can be set large enough to allow free opening of the shell.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a scallop with ears suspended according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of a retaining portion of an ear fishing string used in the present invention.

FIG. 3 is a front view of a main part of another embodiment of a retaining portion of an ear fishing string used in the present invention.

FIG. 4 is a front view of a main part of still another embodiment of a retaining portion of an ear fishing string used in the present invention.

FIG. 5 is a front view of a main part of still another embodiment of a retaining portion of an ear fishing string used in the present invention.

FIG. 6 is a front view of an example of an apparatus for implementing the present invention.

FIG. 7 is a perspective view of one embodiment of a portion where an ear suspension string is bent.

FIG. 8 is a front view of one embodiment of a portion where the ear suspension string is bent.

FIG. 9 is a front view of a main part of an embodiment of a retaining portion of a conventional ear fishing string.

FIG. 10 is a front view of a relevant part of another embodiment of a retaining portion of a conventional ear fishing string.

FIG. 11 is a front view of a main part of still another embodiment of a retaining portion of a conventional ear fishing string.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Parent rope 2 Resin ear suspending cord 21 Bending prevention part 21a Bending prevention part 21b Bending prevention part 21c Bending prevention part H Scallop H1 Small through hole

Claims (1)

(57) [Claims] 1. A plurality of resin-made ear suspending cords (2, 2, 2,...) Having a predetermined length are inserted into the parent rope (1) at appropriate intervals in the orthogonal direction. 2, 2, 2...), And the free end side of the resin-made ear suspension string 2 is inserted into a small through hole (H1) opened at an appropriate position in the shell. In the method for hanging ears of a scallop adapted to be hung, a material having a tendency to bend is used for the resin-made ear hanging string 2, and a small through hole (H) of each scallop (H) is provided from the parent rope (1) side.
The free end portion of the resin ear suspension string (2) that has passed through 1) is bent, and the bent portion is crushed until the cross-sectional shape of the suspension string (2) changes, so that the bending habit does not return. A scallop ear-hanging cultivation method, characterized in that a scallop (H) is suspended by forming a bent habit retaining portion (21c, 21c).