JPS59213339A - Engaging tool and production thereof - 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 provides a locking device for connecting two or more objects, particularly a locking device for aquaculture used to attach young scallops to a rope when cultivating scallops, and a method for manufacturing the same. This is what we provide.

Figure 1 is an explanatory diagram showing the situation in which scallops are cultivated. A young shellfish 6 is suspended by a locking device.

Conventionally, when hanging the young shellfish 6, a string was passed through the rope 5, and the string was tied through a hole made in the ear of the young shellfish 6.

As is well known, in order to make it easier to pass ropes and fires through, tegusu is a filament-like material that is quite hard and stiff, and the work of tying it together is quite complicated and is similar to handling a knife. Because the hands get rough, rubber gloves are used to perform the work, making the work even more difficult and resulting in a lot of time wasted.

In addition, if the above-mentioned hanging of young shellfish is done with insufficient knots, they may fall off during cultivation (furthermore, this fall-off is likely to occur when the young shellfish grow and their weight increases; The drawback was that the quality of the work was largely determined by the level of skill.

Furthermore, when suspending young shellfish using the above-mentioned tegus, preliminary work is required to tie the tegus to the rope 5 in advance during the fishing season. It performs work and makes the work even more complicated.

Therefore, in order to quickly and easily attach the young shellfish 6, a synthetic resin fastener was developed.

For example, as shown in FIG. 2, this locking tool P includes a filament portion 10 (main body portion), hook portions 11 provided at both ends of the filament portion 10, and a rope provided opposite to the center portion of the filament portion 10. It is composed of a dovetail-shaped fixing part 12 for fixing. This locking tool P is integrally molded from synthetic resin such as nylon or polypropylene.

By the way, this locking tool P is made by inserting the hook part 11 into a hole provided in the ear part of the young shellfish 6, and attaching the jaw part with the hook part 11 diagonally to the filament part 10 as shown in FIG. 13 is used to hold the young shellfish.

When attaching the locking tool P to the young shellfish 6, it is necessary to move the locking part 11 in the direction of the arrow A so that it overlaps the reduced filament part 14. Therefore, it is necessary to insert the reduced filament part 14 and the hook part 11 into a small diameter hole provided in the ear part of the young shellfish 6 while the reduced filament part 14 and the hook part 11 overlap, and the reduced filament part 14 has to be quite thin. It is.

In general, the holes made in the ears of young shellfish greatly affect the growth rate of the young shellfish, and if holes are to be made, the maximum size should be 1.5 dragons or less, taking into consideration factors such as shell cracking and growth rate. It is preferable.

Due to these restrictions, the diameter of the filament portion 10 is set to 1.
3 fins, and the thickness of the reduced filament portion 14 (usually formed in a semicylindrical shape in cross section) is approximately 0.7 fins, which is quite thin. In addition, if the diameter of the hole made in the ear of the young shellfish is increased by Q, lui, the growth of the young shellfish tends to be delayed by about one week, and to prevent this phenomenon, the hole made in the ear of the young shellfish is It is desirable that it be as small as possible.

The size of the young shellfish when securing them to the rope at the farm is as follows:
It has a diameter of about 4 to 5 cm, and grows during the cultivation period of about 1 year, and weighs 110 to 150 cm at the time of harvest.
If the weight of the deposits is included, the weight is about 300g.

On the other hand, the forces acting on the young shellfish include (1) the force when the ropes intertwine, (2) the force when the young shellfish intertwine with each other, and (3) the force of waves. Therefore, the anchor needs to be strong enough to withstand such various comprehensive forces and support the young shellfish on the rope. Specifically, the strength of the locking tool P is 8 to I.
Qkg or more is required.

In the end, the things that must be taken into consideration when manufacturing the aforementioned synthetic resin locking tool are: (1) The diameter of the hole drilled in the young shellfish should be 1.5 nm or less, preferably about 1.3 mm.

(2) There are five types of fasteners to make it easier to attach the young shellfish to the rope.

(3) The locking tool needs to weigh 8 to 10 kg or more, considering that various comprehensive forces act on it as described above.

(4) In the locking device, the hook portion 11 is formed obliquely with respect to the axial direction of the filament portion 10;
When passing through the hole of the young shellfish 6, the hook part 12 is tightly and tightly parallel to the filament part 10, and the total diameter of the filament part 10 and the hook part 12 passes through the hole made in the ear part of the young shellfish. In consideration of the maximum thickness and strength required to hold the material, it is necessary to have a strength proportional to the cross-sectional area.

(5) The filament part 10 and the hook part 11 are elastically connected, and the hook part 11 is attached to the body so that the hook part 11 rises when the hook part 11 is inserted into the ear part of a young shellfish. It is necessary to have elasticity.

The period during which the young shellfish 6 is suspended from the rope 5 using the locking device is as follows:
Since it is usually about 1 to 1.5 years, it is necessary that the rope has enough strength to hold the young shellfish 6 without falling off the rope 6 during this period.

However, in the conventional locking piece shown in FIG. 2, the thickness of the reduced filament portions 1 to 14 is Q, 7 inches, and the diameter of the overlapping portion with the hook portion 11 is approximately 1.3 inch. However, the filament part io of this kind of structure is poisonous, 14
Because it is in an unstretched state, it is highly brittle.
Based on the results of actual use, the aquaculture recovery rate is 40-50%.
Therefore, it was difficult to obtain a device that could withstand use during the cultivation period.Moreover, it was difficult to manufacture a locking device with a delicate filament portion.

The object of the present invention is to overcome the drawbacks of the conventional locking devices for cultivating scallops, particularly the drawback that the filament is thick (low strength).

The structure of the locking tool according to the present invention to achieve the above object is as follows: (1) A locking tool consisting of a filament part made of synthetic resin and a hook part branched from the filament part, wherein the filament part and the hook part are different from each other. This is a locking device characterized in that it is oriented by stretching and is configured such that the hook portion is folded tightly against the filament portion, and further includes (2) the filament portion made of synthetic resin. In a method for manufacturing a locking tool consisting of a hook branching from this filament part, a branch part is formed which branches from the filament part and is connected to this filament part again, and an adhesion prevention material is inserted into this branch part. , a method for producing a locking tool, characterized in that a part of the filament I is stretched by applying tension, and furthermore, (3) it is made of a filament part made of synthetic resin and a hook part branched from this filament part. In a method for manufacturing a fastening tool, a rough material is prepared in which a plurality of filament parts are arranged and diagonally tied between these filament parts to form a branch part, the branch part is stretched together with the filament part, and then 2. A method for manufacturing a locking tool, characterized in that a hook portion is formed in the filament portion by cutting a joint portion between the branch portion and the filament portion.”

Next, the present invention will be described in detail with reference to the drawings.

FIG. 3-A is a front view showing the original shape of the rough material of the locking tool, and FIG. 3-B is a side view of the same.

The fastener gross profit 20 has a ring-shaped head 21, a filament part 22 located between these heads 21, and a branch part 23 connected to both ends of the filament part 22, which is made of a wire made of nylon or polypropylene. It is integrally molded from a polyester (meaning a synthetic resin that can be stretched at room temperature or in a heated state and has the property of improving its strength). The head 21 may be ring-shaped, disk-shaped, T-shaped, or the like.

In this embodiment, the central portion 2 of the filament portion 22 is
A branch 23 is provided symmetrically to 4, and this branch 23 is provided with a teardrop-shaped hole or slit 25. This hole or slit is oval,
When the filament part 22 and the branch part 23, such as a triangle, are stretched, the branch part 23 is stretched diagonally with respect to the filament part 22, and the branch part 2 is stretched diagonally with respect to the filament part 22.
3 can be manufactured so that it can be folded as compactly as possible.

The branching portion 23 is an important part in manufacturing the locking tool according to the present invention, and forms a fixing portion for locking the young shellfish.

If the locking tool material 20 is formed as described above, the head 2
L 21 is held by a fixed part and a moving part of a drawing machine, or a grip part of a drawing machine, and tension is applied in the length direction of the filament part 22 to draw the filament part 22 to a specified magnification.

This stretching ratio differs depending on the type of linear polymer used, and for example, in the case of nylon, it is 2 to 3 times, and in the case of polypropylene, it is 3 to 4 times.

As is well known, the cross section of a linear high molecular weight polymer is reduced by stretching, and the molecules are oriented, resulting in a significant increase in strength and toughness, and the cross section is reduced in proportion to the stretching ratio.

FIG. 4 is a front view and a side view showing the shape of the locking tool rough material 20 after being stretched as described above. It is stretched.

If the locking tool coarse JrA2o in Fig. 3 is simply stretched,
Since the hole portion 25 provided in the branch portion 23 is reduced in size, it becomes difficult to form a hook portion that automatically stands up against the filament portion 22, so the following measures are required to avoid this.

FIG. 5-A is a diagram showing the state of the branch portion 23 of the locking tool material 2o before stretching, and the insert body 26 is inserted into the hole 25 of the branch portion 23 prior to this stretching.

This inserter 26 is provided to prevent the hole 25 from collapsing, and is a member that is automatically inserted prior to the stretching operation.

FIG. 5-B is a diagram showing the state after stretching, in which both the filament portion 22a and the branch portion 23a have been stretched, and the hole portion 25 has grown longer accordingly.

After the drawing of the locking tool material 20a is completed as shown in FIG.
While dividing the central part 24 (Fig. 3-A), the branch part 2
7 is cut and removed at the location 23b.

FIG. 6 is a front view showing the locking tool completed by the above process, and FIG. 7 is an enlarged view of the hook portion.

As shown in FIG. 7, the hook portion 27 is branched from the filament portion 22a, but due to the insert 26, the hook portion 27 is deviated from the filament portion 22a in the lateral direction.

The base 28 of this hook portion 27 is configured with a sharp angle, and when this hook portion 28 is pressed, the filament portion 22a
The hook portion 27 is in close contact with the user.

FIG. 8 is an enlarged view of the tip of the locking device according to the present invention, showing a state in which a hook portion 27 is provided at the reduced filament portion 22b provided at the tip of the filament portion 22a. If the diameter of the portion 22a is D, the thickness of the reduced filament portion 22b is d, and the width of the hook portion 27 is l, then d
+A=D, and the inserted portion having a thickness of d+β fills the hole 6a provided in the young shellfish 6. In this case, the hook portion 2
The lower surfaces 27a of 7 are in perfect contact with each other or are very close to each other. As can be seen from FIG. 8-B, the locking tool is fully inserted into the hole 6a provided in the ear of the young shellfish 6.

FIG. 9 is an enlarged cross-sectional view of both the filament part 22a and the reduced filament part 22b being stretched and the hook part 27 in an unstretched state. The upper surface of the portion 22b and the hook portion 2
A gap 30 is inevitably formed between the lower surface of the
As shown in FIG. 8, the cross-sectional area inserted into the hole 6a provided in the ear of the young shellfish 6 is smaller than in the case of FIG. 8-B. This means that the cross-sectional area of the reduced filament portion 22b is small, which ultimately makes it difficult to increase the strength of the locking tool.

FIG. 10 shows the same area as in FIG. 8 with the same stretching, and in the case of this locking tool, the meat of the root portion 29 (reservoir-like protrusion) is significantly large at the attachment of the hook portion 27; It is difficult to easily insert the locking tool into the hole 6a provided in the ear of the young shellfish 6, and with this locking tool, it is necessary to provide a large hole 6a in the young shellfish 6.

Furthermore, since it is difficult to increase the size of the reduced filament portion 22b, the unstretched fastener becomes weak in strength.

However, according to the locking device according to the present invention, as shown in FIGS. 6 and 7, the hook portion 27 is stretched together with the filament portions 22, 1, and its cross section is reduced together with the reduced filament portion 22b, and the strength of the hook portion 27 is reduced. is increasing. , and hook part 2
7 is inserted into the ear of the young shellfish 6, it is possible to follow the reduced filament portion 22b as shown in FIG. 8, so that the reduced filament portion 2
It is possible to manufacture a fastening tool with high strength by maximizing the cross-sectional area of 2b.

FIG. 11 is a perspective view showing how the locking tool 20A according to the present invention is used, and in FIG. Figure 6 shows a young shellfish 6 suspended in a so-called balance shape.

FIG. 11-B shows a state in which two young shellfish 6 are supported by the locking tool 20A fixed to the rope 5, and FIG. It shows the state where it is supported. The ring-shaped head 21 provided at the end of the filament part 22 to the locking tool 20 is necessary when the attachment method shown in FIGS. 11-B and C is adopted, and this head It is possible to insert the tip portion into the hole formed in 21 and lock it with the hook portion 27.

Further, as shown in FIG.
It is also possible to extend the filament part 22a on both sides of the filament part 22a and provide a hook part 27 at each end thereof, and use this as shown in FIG.

In FIG. 2, a beveled hook portion 12 is projected from the center of the filament portion 10, but instead of the annular head 21 of the locking tool 20B in the embodiment of FIG. It is also possible to adopt a section.

FIGS. 14 to 16 are views showing another method of manufacturing a fastener, in which a fastener blank material 30 is molded as shown in FIG. 14.

This locking tool material 30 consists of a filament portion 31, a reduced filament portion 32 provided at the center, a hook portion 33, and heads 34 provided at both ends of the filament portion 31.

When both ends of the blank material 30 configured as described above are stretched in the manner shown by arrows X and Y, a stretched fastener blank material 30A shown in FIG. 15 is manufactured. Reference numerals 36 and 37 are cutting portions, and by cutting at these portions, a locking tool 30B as shown in FIG. 16 is obtained. In this locking tool 30B, the hook portion 33a, filament portion 31a, etc. are stretched in the process shown in FIG. 15, and the tip portion where the hook portion 33a is formed has a structure similar to that in FIGS. 6 and 8. It consists of

As described above, in the locking tool according to the present invention, the hook portion 27 provided at the tip of the filament portion 22a is extended as shown in FIG.
It is distinctive in that it is compactly formed along the .

　　.

Therefore, according to the locking tool according to the present invention, the following effects can be achieved.

(1) Since the filament portion 22a and the hook portion 27 provided at the end of the filament portion 22a are both stretched, the reduced filament portion 22 as shown in FIG.
There is no gap 30 between b and the hook 27, and as shown in FIG.
No defects such as bumps like No. 9 occur.

(2) As shown in FIG. 8, since both the filament part 22a and the hook part 27 are stretched, their strength is greatly increased even though their cross sections are reduced. The toughness is improved, and there is no defect such as the young shellfish 6 falling off the rope 5 during the cultivation period, and the cultivation rate is significantly improved.

(3) Due to the reduced cross section of the hook portion 27, (8th
9 and 10), the diameter of the hole provided in the ear of the young shellfish becomes smaller, and therefore, it is possible to prevent the growth of the young shellfish from being inhibited.

(4) Since the filament portion 22a is reduced in size and the strength of the waist is increased, the operation when fixing the young shellfish 6 to the rope 5 is extremely easy.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the cultivation situation of scallops, and FIG. 2 is a front view of a conventional locking tool made of a linear polymer. FIGS. 3A and 3B are a front view and a side view showing a rough material of a fastener according to the present invention. FIG. 4 is a front view and a side view showing a stretched version of the locking material shown in FIG. 3. FIG. 5 is a front view of the main parts showing the manufacturing process of the fastener according to the present invention, in which Figure A shows the rough material of the fastener in an unstretched state, and FIG. The figure shows. FIG. 6 is a front view showing a fastening tool manufactured by stretching the fastening tool rough material shown in FIG. 3 to obtain the intermediate body shown in FIG. 4, and cutting the same. FIG. 7 is a front view showing the main parts of the locking device manufactured according to the present invention. Figure 8-8 is a diagram showing the operating state of the fixing part of the locking device according to the present invention, Figure B is a cross-sectional view of the part attached to the young shellfish, and Figure 9 is a diagram showing the working state of the fixing part of the locking device according to the present invention. FIG. 10 is a front view showing a state in which the locking tool is attached to a young shellfish, and is a diagram showing the main parts of the locking tool that cannot be used when the hole provided in the ear of the young shellfish is small. Figures 11A, B, and C are explanatory diagrams showing how the locking tool according to the present invention is used, and Figure 12 is a front view of another type of locking tool.
FIG. 13 is an explanatory diagram of how the locking tool shown in FIG. 12 is used. FIG. 14 is a front view of the rough material of the locking tool according to the third embodiment;
FIG. 15 is a front view showing the rough material of the fastener shown in FIG. 14 after being stretched, and FIG. 16 is a front view of a fastener manufactured from the rough material of the fastener shown in FIG. 14. be. 10...Filament part, 11...Locking part, 12...Fixing part, 13...Jaw part, 14...Reduction filament part, 20.20a...Locking tool rough material, 20b...Locking tool,
21...head, 22...filament part, 23...branch part, 24...hole or slit, 25...fixing part.

Claims (3)

[Claims] (1) A locking device comprising a filament portion made of synthetic resin and a hook portion branched from the filament portion, wherein the filament portion and the hook portion are oriented by stretching,
A locking device characterized in that a hook portion is folded into a substantially tight state with respect to a filament portion. (2) In a method of manufacturing a locking tool consisting of a filament part and a hook part branched from the filament part using a synthetic resin, a branch part is formed which branches from the filament part and is connected to this filament part again, and this branch 1. A method for manufacturing a fastener, comprising inserting an adhesion prevention material into the filament portion and applying tension in the length direction of the filament portion to stretch the filament portion. (3) In a method of manufacturing a locking tool consisting of a filament part and a hook part branched from the filament part using synthetic resin, a plurality of filament parts are arranged and the filament parts are tied diagonally to form the branch part. A locking device characterized in that a rough material comprising the above is prepared, a branched portion is stretched together with the filament portion, and then a joint portion between the branched portion and the filament portion is cut to form a hook portion on the filament portion. manufacturing method.