How the net is made

Abstract

To provide a method of manufacturing a net, which enables the net to be manufactured in a short period of time and which enables a net function to be maintained even in the case of application of a great force.SOLUTION: In a method of manufacturing a net, a first net fabric 1 having a crest part 1A and a valley part 1B at an end, and a second net fabric 2 having a crest part 2A and a valley part 2B at an end are connected together. The crest part 1A of the first net fabric 1 and the valley part 2B of the second net fabric 2 correspond to each other, and the valley part 1B of the first net fabric 1 and the crest part 2A of the second net fabric 2 correspond to each other. Corresponding parts of the first net fabric 1 and the second net fabric 2 are sewn by a sewing machine 13.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a method for manufacturing netting. [Background technology]

[0002] 2. Description of the Related Art Nets have traditionally been used for a variety of purposes, such as rockfall prevention nets for preventing the fall of earth and sand, and fishing nets (hereinafter also referred to as fishing nets) (Patent Document 1 and Patent Document 2). For example, fishing nets are required to be strong because they are used for long periods of time in harsh environments. In addition, fishing nets are required to be able to be connected (joined) and detached from each other, so they are required to have high functionality. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2011-162913 A [Patent Document 2] JP 2008-22786 A Summary of the Invention [Problem to be solved by the invention]

[0004] Until now, nets have been made by manually connecting the ends of the net fabric to create the desired shape. This meant that it took a long time to make one net. In addition, there was a problem in that the strength of the net changed depending on the skill level of the stitching technician.

[0005] Therefore, an object of the present invention is to provide a method for manufacturing a net that can be produced in a short period of time and that can produce a net having a consistent strength. [Means for solving the problem]

[0006] The method for manufacturing a net according to the present invention involves connecting one mesh having peaks and valleys at its end with another mesh having peaks and valleys at its end, and is characterized in that the peaks of one mesh are matched up with the valleys of the other mesh, and the valleys of one mesh are matched up with the peaks of the other mesh, and the matched portions of one mesh and the other mesh are sewn together by a sewing machine.

[0007] The method for manufacturing a net according to the present invention is characterized in that the sewing process is carried out on a base having a net feed roller and on which one net fabric and the other net fabric are placed, and in the sewing process, the overlapping portions are sewn alternately left and right by adjusting at least one of the operation of the sewing needle of the sewing machine, the operation of the sewing machine, the operation of the net feed roller, and the operation of the base.

[0008] The method of manufacturing a net according to the present invention is characterized in that the multiple windings are formed at predetermined intervals.

[0009] The method for manufacturing a net according to the present invention is characterized in that after sewing together the corresponding portions of one netting and the other netting, a plurality of multi-wound portions are formed.

[0010] The method for manufacturing a net according to the present invention is characterized in that the sewing thread used in the sewing machine is 0.1 to 2 times the thickness of one net and the other net.

[0011] The method for manufacturing a net according to the present invention is characterized in that the one mesh and the other mesh are knotless nets. Effect of the Invention

[0012] The method for manufacturing a net according to the present invention uses a sewing machine, and therefore can be manufactured more efficiently and in a shorter time than by hand sewing. Furthermore, the method for manufacturing a net according to the present invention can be relatively easily performed once one has mastered the operation of a sewing machine, so that even those without advanced skills can manufacture a net with a certain degree of strength.

[0013] The method of manufacturing a net according to the present invention can sew corresponding portions of one net and another net alternately left and right by adjusting at least any one of the operation of the sewing needle of the sewing machine, the operation of the sewing machine, the operation of the net feed roller, and the operation of the base.

[0014] The method for manufacturing a net according to the present invention forms a multiple winding section, which prevents the sewing thread from coming undone. Furthermore, by forming a plurality of multiple winding sections at a predetermined interval, the strength of the net is increased, so that even if a large force is applied to one net or the other net, both nets can be prevented from breaking. [Brief description of the drawings]

[0015] [Figure 1] FIG. 2 is a diagram for explaining the netting used in the net manufacturing method according to the embodiment of the present invention. [Diagram 2] 1A to 1C are diagrams for explaining a method of manufacturing a net according to an embodiment of the present invention. [Diagram 3] 10A to 10C are diagrams for explaining sewing in a method for manufacturing a net according to an embodiment of the present invention. [Figure 4] 1A and 1B are diagrams for explaining the position of the multiple winding portion in the manufacturing method of the net according to the embodiment of the present invention, in which (a) is an example in which the multiple winding portion is formed at the top of the peak and the bottom of the valley, and (b) is an example in which the multiple winding portion is formed midway between the top of the peak and the bottom of the valley. [Diagram 5] 11 is a diagram for explaining a process of sewing corresponding portions of one netting and another netting alternately left and right in a net manufacturing method according to an embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] The method of manufacturing a net according to this embodiment will be described with reference to Figures 1 to 5. In this embodiment, with reference to Figure 1, the direction in which the peaks and valleys at the end of the netting are formed is defined as the front-rear direction X, and the direction perpendicular to the front-rear direction X is defined as the left-right direction Y.

[0017] In this embodiment, a method for manufacturing a net for connecting a first netting 1 (one netting) and a second netting 2 (the other netting) as shown in FIG. 1 will be described.

[0018] Peaks 1A and valleys 1B are alternately and continuously formed at the end of the first mesh 1. Peaks 2A and valleys 2B are alternately and continuously formed at the end of the second mesh 2. The mesh size (mesh size) and shape of the first mesh 1 and the second mesh 2 are almost the same. The first mesh 1 and the second mesh 2 are made of, for example, nylon, polyester, or polyethylene having a wire diameter (thickness) of 1 mm to 13 mm. In addition, the first netting 1 and the second netting 2 can be made of knotless netting.

[0019] Next, a specific process for producing the net in this embodiment will be described.

[0020] First, the first mesh fabric 1 and the second mesh fabric 2 are arranged as shown in Figure 2 so that the peaks 1A of the first mesh fabric 1 and the valleys 2B of the second mesh fabric 2, and the valleys 1B of the first mesh fabric 1 and the peaks 2A of the second mesh fabric 2 face each other. Instead of arranging them so that they face each other, the first mesh fabric 1 and the second mesh fabric 2 may be arranged so that the peaks 1A and the valleys 2B, and the valleys 1B and the peaks 2A overlap each other.

[0021] Next, as shown in Fig. 5, the corresponding parts of the first netting 1 and the second netting 2 (hereinafter also referred to as "corresponding parts") are sewn using a sewing machine 13 to connect the first netting 1 and the second netting 2. The sewing process using the sewing machine 13 is carried out on a base 12 having a net feed roller 11. The sewing machine 13 used is a commercial one, and the sewing thread (sewing thread) is, for example, nylon or polyester. If the sewing thread is too thin, it will break easily due to pulling force or abrasion, and if the thread is too thick, it will become too bulky when connecting the nets together and become difficult to handle, so the thickness of the sewing thread used is, for example, 0.1 to 2 times the thickness of the net 2. An appropriate thickness of the sewing thread is selected depending on the thickness of the net and its application. The sewing speed of the sewing machine 13 is 1 to 5 times. Sewing by the sewing machine 13 is performed along the mesh in the front-back direction X as shown in FIG. 3, and the first net 1 and the second net 2 are connected to produce the net 10.

[0022] In the method for manufacturing a net according to this embodiment, the first net 1 and the second net 2 are sewn along the mesh, so that the sewn portion is formed in a zigzag shape. This sewing is performed so that a plurality of multiple winding portions 3 are formed at predetermined intervals. The multiple winding portion 3 means a portion in which the number of turns of thread is greater than that of a portion sewn by a normal sewing machine, that is, a portion in which the sewing needle is inserted more times than the other sewn portions. In this embodiment, the portion sewn with two to six stitches is called the multiple winding portion 3. This multiple winding portion 3 may be formed in one sewing operation, or may be sewn once by the sewing machine 13, and then only the multiple winding portion 3 may be formed again.

[0023] The multiple windings 3 are formed so that the spacing between adjacent multiple windings 3 is the same, and in Figure 3, they are formed at all of the tops of peaks 1A and the bottoms of valleys 2B, and at the bottoms of valleys 1B and the tops of peaks 2A. As another example, as shown in Fig. 4(a), one multiple winding portion 3 may be formed at the top of the peak 1A and the bottom of the valley 2B, another at the bottom of the valley 1B and the top of the peak 2A at a position shifted by 1.5 pitches in the front-rear direction X, and another at the top of the peak 1A and the bottom of the valley 2B at a position shifted by 1.5 pitches in the front-rear direction X, repeating this process to form a plurality of multiple winding portions 3. Alternatively, the multiple winding portion 3 may be formed midway between the top of the peak 1A (2A) and the bottom of the valley 2B (1B) as shown in Fig. 4(b). In this case as well, the multiple winding portion 3 is formed according to a certain regularity. This multi-winding portion 3 only needs to be formed according to a certain regularity, and for example, it can be formed by combining the multi-winding portions 3 shown in FIG. 4(a) and FIG. 4(b).

[0024] 5, the multiple winding portion 3 is formed alternately on the left and right with respect to the traveling direction Z of the first netting 1 and the second netting 2. In order to form the multiple winding portion 3 alternately on the left and right in the corresponding parts of the first netting 1 and the second netting 2, sewing is performed by adjusting at least one of the operation of the needle of the sewing machine 13, the operation of the sewing machine (sewing machine main body) 13, the operation of the net feed roller 11, and the operation of the base 12. The movable ranges (operating distances) of these can be changed in the range of 1 mm to 40 mm.

[0025] Next, the effects of the method for manufacturing a net according to this embodiment will be described.

[0026] In the method for manufacturing a net according to this embodiment, an end of the first netting 1 and an end of the second netting 2 are sewn together by a sewing machine 13. Therefore, a desired net can be manufactured efficiently in a short time compared to the case where a net is manufactured manually. Furthermore, the method of manufacturing the net according to this embodiment is relatively easy to operate once one has mastered sewing machine operation, so even a person without skilled techniques can easily make the desired net, and can produce a net 10 with a consistent strength.

[0027] As shown in Fig. 5, the multiple winding portion 3 is formed alternately left and right with respect to the traveling direction Z. In order to form the multiple winding portion 3 alternately left and right in the corresponding portions of the first netting 1 and the second netting 2, they are sewn and connected by adjusting any one of the operation of the sewing needle of the sewing machine 13, the operation of the sewing machine 13, the operation of the net feed roller 11, and the operation of the base 12. In the net manufacturing method according to this embodiment, since any one of the operation of the sewing needle, the operation of the sewing machine 13, the operation of the net feed roller 11, and the operation of the base 12 can be adjusted, for example, when the sewing machine (sewing needle) is fixed and cannot be moved left and right, the multiple winding portion 3 can be sewn alternately left and right by the operation of the net feed roller 11 or the operation of the base 12. In this manner, the method for manufacturing the net according to this embodiment allows the multiple winding portion 3 to be formed in a variety of ways.

[0028] In the method for manufacturing a net according to this embodiment, the movable range of the operation of the sewing needle, the operation of the sewing machine 10, the operation of the net feed roller 11, and the operation of the base 12 can be changed in the range of 1 mm to 40 mm. Therefore, regardless of the mesh size of the first netting 1 and the second netting, the multiple winding portion 3 can be formed at a desired position. In addition, by using a sewing thread that is 0.1 to 2 times the thickness of the first mesh 1 and the second mesh 2, it is possible to prevent the sewing thread from being easily broken due to pulling force or abrasion, and to prevent the sewing thread from becoming bulky and difficult to handle.

[0029] The method for manufacturing a net according to this embodiment forms a plurality of multiple winding portions 3 along the front-rear direction X. If the sewing thread sewn in a zigzag pattern in the front-rear direction X comes undone, the loose thread can be cut off by the multiple winding portions 3. Therefore, by forming a plurality of multiple winding portions 3, it is possible to prevent the net from breaking.

[0030] As described above, the multiple winding portion 3 in the net manufacturing method according to this embodiment is sewn with a sewing needle more times than other sewn portions, so that the portion where the multiple winding portion 3 is formed is firmly connected. By forming the multiple winding portion 3 at a predetermined interval, it is possible to prevent the first netting 1 and the second netting 2 from being broken even when a large tensile force is applied to the net 10 from the left-right direction Y. The more multiple winding portions 3 formed, the greater the resistance to tensile force. Thus, the net 10 manufactured by the net manufacturing method according to this embodiment has great strength and is therefore suitable, for example, as a fishing net to be used for long periods of time in harsh environments.

[0031] Although the present embodiment has been described above, the configurations described in the above embodiment can be selected or changed as appropriate without departing from the spirit of the present invention. In the present embodiment, the case where two nets are connected is described, but three or more nets can also be connected, and a strong net 10 of a desired size can be produced. Furthermore, other than the example shown in this embodiment, the position and number of the multiple winding portion 3 can be appropriately determined depending on the mesh size (mesh size) and the required strength. In this embodiment, the operation of the needle of the sewing machine 13, the operation of the sewing machine 13, the operation of the net feed roller 11, or the operation of the base 12 is adjusted, but it is also possible to select a plurality of operations from among these to form the multiple winding portion 3. By adjusting these multiple operations, it is possible to form the multiple winding portion 3 in a greater variety of positions compared to the case where one operation is adjusted.

[0032] In this embodiment, an example of multiple winding of the knot has been described, but the legs between the knots can also be multiple wound. In this case, for example, 4 stitches for the knot - 2 stitches for the legs - 4 stitches for the knot are sewn. Also, the multiple winding portion 3 does not have to be sewn alternately on the left and right, and for example, the multiple winding portion 3 can be sewn in a single row. [Explanation of symbols]

[0033] 1 First netting (one side netting) 1A Yamabe 1B Tanibe 2 Second netting (other netting) 2A Yamabe 2B Valley 3 Multiple winding section 10 net 11 Net feed roller 12 Foundation 13 Sewing machine (sewing machine body) X Anteroposterior direction Y left / right direction Z direction of travel

Claims

1. A method for manufacturing a net for connecting one net having peaks and valleys at an end to another net having peaks and valleys at an end, a sewing process in which the peaks of the one mesh and the valleys of the other mesh, and the valleys of the one mesh and the peaks of the other mesh are made to correspond to each other, and the corresponding portions of the one mesh and the other mesh are sewn together by a sewing machine; A multiple winding portion forming process of forming a multiple winding portion by sewing between the peak portion of one mesh and the valley portion of the other mesh, or between the valley portion of one mesh and the peak portion of the other mesh and at a predetermined interval. A method for manufacturing a net, comprising the steps of:

2. The sewing step and the multiple winding step are performed on a base having a net feed roller and on which the one net and the other net are placed, In the sewing process and the multiple winding portion forming process, at least any one of the operation of the sewing needle of the sewing machine, the operation of the sewing machine, the operation of the net feed roller, and the operation of the base is adjusted to sew the corresponding portions alternately on the left and right. A method for manufacturing a net according to claim 1.

3. The multiple windings are sewn with 2 to 6 stitches.

3. A method for manufacturing a net according to claim 1 or 2.

4. The sewing thread used in the sewing machine is 0.1 to 2 times the thickness of the one mesh fabric and the other mesh fabric, A method for manufacturing a net according to any one of claims 1 to 3.

5. The one mesh and the other mesh are knotless meshes. A method for manufacturing a net according to any one of claims 1 to 4.

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