JP3072994U - Net frame - Google Patents

Abstract

(57) [Summary] [Problem] It is easy to manufacture, lightweight, has good rigidity,
Providing good-looking net frames. SOLUTION: One or more layers of a woven band or woven fabric are laid on the outer periphery of a mandrel 1 or are directly knitted or wound with a yarn bundle, and then one or more layers are wrapped around the outside of the woven band, the woven fabric or the yarn bundle. A shrink film strip 3 is inserted, and a certain amount of resin 4 is injected from one end of the shrink film strip 3 depending on the fiber volume content in a vacuum assisted state or a non-vacuum assisted state, and the inlet is sealed and appropriately heated. After heat shrinking the shrink film strip 3 to gradually and uniformly permeate the resin 4 into the knitted woven band, woven cloth or yarn bundle, and proceeding the hardening molding process at the hardening temperature of the resin system, the shrink film band on the surface is 3 is removed to form a screen frame.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a kind of mesh frame and a method of manufacturing the same, and more particularly to a mesh frame which is easy to manufacture, lightweight, has good rigidity, and has a good appearance.

[0002]

[Prior art]

 Almost all conventional metal net frames, especially fish net frames, are made of aluminum alloys, but aluminum alloys are easily oxidized, and especially when immersed in seawater, the oxidation situation becomes severe. In addition, the appearance of aluminum alloy or general metal frames was too monotonous, little change, and the appearance was not good, so the added value in the market was low.

[0003]

[Problems to be solved by the invention]

 SUMMARY OF THE INVENTION It is an object of the present invention to provide a kind of net frame having characteristics of being lightweight, having good rigidity, having a good appearance, being variable in pattern, and being not oxidized.

[0004]

[Means for Solving the Problems]

 The invention according to claim 1 is configured such that a single layer or a multi-layer woven band or woven fabric is laid on the outer periphery of the mandrel 1 or knitted directly, or a yarn bundle is wound, and then the resin 4 is impregnated and cured. And a net frame.

[0005] The invention according to claim 2 is the net frame according to claim 1, wherein the mandrel 1 is made of metal or nonmetal.

The invention according to claim 3 is the net frame according to claim 1, characterized in that the cross section of the mandrel 1 can be circular, polygonal, or any other shape.

The invention according to claim 4 is to provide a single or multi-layered woven band or woven fabric around the outer periphery of the mandrel 1 or to directly knit or wind a yarn bundle, and then to wrap the woven band, woven fabric or yarn. One or more shrink film strips 3 are provided outside the bundle, and a certain amount of resin 4 is injected from one end of the shrink film strip 3 depending on the fiber volume content in a vacuum assisted state or a non-vacuum assisted state. The inlet is sealed, and the shrink film strip 3 is heat-shrinked by appropriate heating, and the resin 4 is gradually and uniformly penetrated into the knitted woven band, woven cloth, or yarn bundle, and is subjected to a curing molding process by the curing temperature of the resin system. After proceeding, the screen frame formed by removing the shrink film band 3 on the surface.

The invention of claim 5 adopts a method of heating the shrink film strip 3 in a stepwise manner from the seal opening toward another end, and heats the volume of the shrink film strip 3 by heating. By shrinking, the resin penetrates into the inner layer from the outer layer of the knitted band, knitted fabric or yarn bundle, and the heating progresses one by one toward the other end of the shrink film band 3 to the area adjacent to the contracted area. The net frame according to claim 4, characterized in that the entire shrink film band 3 is shrunk in this way, and the entire knitted woven band, woven fabric or yarn bundle is impregnated with resin.

The invention according to claim 6 is characterized in that a rough surface is previously formed on the outer surface of the mandrel 1 by sand spraying or another method.

The invention according to claim 7 is characterized in that an adhesive is applied to the outer surface of the mandrel 1 in advance.

[0011]

[Embodiment of the invention]

 According to the present invention, a preformed mandrel is inserted into a knitting band or a knitting band is directly knitted on the outer periphery of the mandrel, and the knitting band is covered with a single or multi-layered shrink film band, and a fixed amount is contained in the shrink film band. Inject the resin and heat it at an appropriate temperature to heat shrink the shrink film strip, soak the resin uniformly in the yarn bundle of the knitted woven strip, and then cure and mold the resin by heating. The film strip is removed, thus producing a net having a composite structure.

[0012]

【Example】

 The mesh frame of the present invention is manufactured as follows. (1) As shown in FIG. 1, a knitted or woven band is laid on the outer periphery of one mandrel or knitted directly, or a yarn bundle is wound around the outer periphery of the mandrel. In FIG. 1, reference numeral 1 denotes a mandrel, and reference numeral 2 denotes a knitted band, a woven fabric, or a yarn bundle. The mandrel 1 has a circular, square, polygonal or any other radial cross-sectional shape (see FIG. 9), and is hollow or solid, and its constituent material is metal, alloy or It is made of a non-metallic material, and the woven band or woven fabric or the yarn bundle 2 is knitted or wound in any form or direction according to actual demand, and is previously sand-sprayed on the shaft 1 as necessary. The bonding property can be increased by performing a rough surface forming treatment or applying an adhesive in advance. (2) As shown in FIG. 2, a shrink film band 3 is provided on the outside of a knitted band, a knitted fabric, or a yarn bundle 2. The shrink film band 3 has a heat shrinking property, and provides a function of uniformly permeating the resin described later into the fibers of the knitted woven band, woven cloth, or yarn bundle by reducing the volume by shrinkage. (3) As shown in FIG. 3, after the shrink film band 3 is laid, the amount is determined according to the fiber volume content ratio required between the shrink film band 3 and the knitting band or the woven fabric or the yarn bundle 2. Is injected. When injecting resin, air can be extracted and vacuum assisted according to the quality requirements of the product, so that the amount of residual air can be reduced and the void content of the product can be reduced. (4) As shown in FIG. 4, the resin inlet is sealed with the seal member 5. (5) As shown in FIG. 5, heat H is applied to shrink the shrink film strip 3 by heat. This heating method employs a method in which the heating proceeds in a stepwise manner from the seal opening to another end, the heating H proceeds from the seal opening, the shrink film band 3 is contracted by heating, and the resin 4 is knitted and woven. Alternatively, the heat is absorbed into the inner layer from the outer layer of the knitted fabric or the yarn bundle 2, and then, the heating H ′ is advanced to the next section toward the other end of the shrink film strip 3 to be shrunk. In this way, the resin is impregnated into the entire knitted belt, knitted cloth or yarn bundle (see FIG. 6). (6) After sufficiently penetrating the resin into the knitting belt, the knitted woven fabric or the yarn bundle, the thermosetting molding process proceeds according to the curing temperature of the resin system. (7) After the completion of the thermosetting treatment, the shrink film band 3 on the surface is removed, thus completing the mesh frame of the composite structure of the present invention.

[0013]

[Effect of the invention]

 The present invention provides a net frame having characteristics of being lightweight, having good rigidity, having a good appearance, being variable in pattern, and being not oxidized.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a manufacturing method of the present invention.

FIG. 2 is a cross-sectional view illustrating the manufacturing method of the present invention.

FIG. 3 is a cross-sectional view illustrating the manufacturing method of the present invention.

FIG. 4 is a cross-sectional view illustrating the manufacturing method of the present invention.

FIG. 5 is a cross-sectional view illustrating the manufacturing method of the present invention.

FIG. 6 is a sectional view illustrating the manufacturing method of the present invention.

FIG. 7 is an external perspective view of the net frame manufactured and completed according to the present invention.

FIG. 8 is an external perspective view of a type of folding net frame manufactured and completed according to the present invention.

FIG. 9 is a sectional view showing various shapes of a net frame manufactured and completed according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mandrel 2 Woven band or woven cloth or yarn bundle 3 Shrink film band 4 Resin 5 Seal member H (H ') Heating

[Procedure amendment]

[Submission date] April 26, 2000 (200.4.2
6)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims for utility model registration

[Correction method] Change

[Correction contents]

[Utility model registration claims]

Claims (7)

[Utility model registration claims] 1. A net formed by wrapping a single-layer or multi-layer woven band or woven fabric around the outer periphery of a mandrel 1, knitting it directly, or winding a yarn bundle, and then impregnating a resin 4 and curing the resin. frame. 2. The net frame according to claim 1, wherein the mandrel 1 is made of metal or nonmetal. 3. The cross section of the mandrel 1 may be circular, polygonal, or any other shape.
The net frame according to claim 1. 4. A single or multi-layered woven band or woven fabric is wrapped around the outer periphery of the mandrel 1, directly knitted, or a yarn bundle is wound, and then one or more layers are wrapped around the outside of the woven band, woven fabric or yarn bundle. And a certain amount of resin 4 is injected from one end of the shrink film band 3 depending on the fiber volume content in a vacuum assisted state or a non-vacuum assisted state, and the inlet is sealed and appropriately heated. Then, the shrink film band 3 is heat-shrinked, and the resin 4 is gradually and uniformly penetrated into the knitted woven band, woven fabric or yarn bundle, and the curing molding process is advanced by the curing temperature of the resin system. A mesh frame formed by removing the band 3. 5. A method of heating the shrink film strip 3 in a stepwise manner from the seal opening toward another end, and reducing the volume of the shrink film strip 3 by heating to reduce resin. Infiltrate the inner layer from the outer layer of the knitted belt, the knitted fabric or the yarn bundle, and successively heat the area adjacent to the shrunk area toward the other end of the shrink film strip 3 to shrink it. The net frame according to claim 4, wherein the whole of the film band 3 is shrunk to impregnate the knitted woven band, the woven cloth, or the whole yarn bundle with the resin. 6. The net frame according to claim 4, wherein a rough surface is previously formed on the outer surface of the mandrel 1 by sand spraying or another method. 7. The net frame according to claim 4, wherein an adhesive is applied to an outer surface of the mandrel 1 in advance.