KR200481670Y1

KR200481670Y1 - Bonding tip for braid using low melting point fiber

Info

Publication number: KR200481670Y1
Application number: KR2020150004049U
Authority: KR
Inventors: 임순철
Original assignee: 기나텍 주식회사
Priority date: 2015-06-19
Filing date: 2015-06-19
Publication date: 2016-10-31

Abstract

The present invention relates to a blade for connecting a braid using a low melting point fiber, and more particularly, to a method for forming a braid of a fiber material used for a membrane filter in a coating process for forming a separator, To a tip for connecting a braid using a low-melting point yarn which is made by fusion-bonding a low-melting point braid to be inserted half-into each of the braid hollows so as to be easily connected without deforming the braid.
According to the present invention, it is not necessary to perform a work for finding and removing a connection part that is deformed in a post-process, and the appearance after the coating is good and the connection part is not cut, Is improved.

Description

{BONDING TIP FOR BRAID USING LOW MELTING POINT FIBER}

The present invention relates to a blade for connecting a braid using a low melting point fiber, and more particularly, to a method for forming a braid of a fiber material used for a membrane filter in a coating process for forming a separation membrane, To a tip for connecting a braid using a low-melting point yarn which is made by fusion-bonding a low-melting point braid, which is inserted half-into each of the braid hollows, so that the braid is easily connected without deforming.

Industrial membrane filters, which are mainly used in advanced water treatment plants or wastewater treatment plants managed by local governments, are divided into immersion type and pressure type. In the hollow fiber membrane filter manufacturing process, which is one of the methods of fabricating the membrane filter, the microfiber yarn is twisted to form a hollow braid structure, and a resin film is coated on the outer surface of the braid to filter the contaminants. The water or liquid substance is purified by flowing through the membrane filter which is supported by the braid.

Braid refers to a form of textile structure. A typical fabric is woven with warp and weft intersecting at a right angle or near a right angle. However, the braid is not divided into warp and weft, but is a fabric made by alternating warp slopes inclined in a certain direction. It is usually made in the form of hair braiding, but it is also made hollow with a space in the center.

FIG. 1 is a perspective view showing the structure of a braid, FIG. 2 is a cross-sectional view showing the structure of a yarn and an object, and FIG. 3 is a conceptual view showing a braid bonding method according to an embodiment of the prior art.

1 and 2, the structure of the braid 10 is formed by twisting a strand (referred to as a " yarn " in the present invention) in which individual yarns 11 are gathered, .

Polyester yarn 11 having a thickness of tens of denier (D) is mainly used for the industrial membrane filter, but other chemical fibers may be used.

It may be necessary to connect two braids 10 in the process of manufacturing the membrane filter. The ultrasonic coupler 30 shown in FIG. 3 is used in the prior art.

In the conventional joining method, ultrasonic waves are used to join the boundaries of two braids 10 whose ends are overlapped with each other. The yarns 11 having a melting point of about 250 DEG C are joined by ultrasonic waves generated from the ultrasonic coupler 30, and the two braids 10 are connected to each other.

However, the hollows 10a and 10'a existing in the braid 10 are joined while being overlapped with each other in the joining process, and the shape is deformed. After the bonding process, it is necessary to find and remove the deformed part. Such a process has been a troublesome process, an extension of the air, and a cost increase.

In addition, since the bonding strength of the joint portion is poor, the disconnection of the joint portion occurs during the coating process and the continuous process is interrupted.

KR 10-2012-0047229 A

In order to solve the above-mentioned problems, the present invention proposes a method in which a connecting tip is inserted half-by-two at the ends of two braids, the two braid boundaries are seated in the welder, and the low- It is an object of the present invention to provide a tip for connecting a braid using a low melting point yarn which allows the braid to be fused without damaging the shape.

In order to construct a connecting tip, a braid is made from a fiber yarn having a melting point lower than that of an outer braid, and a braid connecting tip using a low melting point, which forms a connecting tip in which a monofilament penetrating through the hollow is inserted, And to provide the above objects.

In order to solve the above-described problems, the present invention has been developed to provide a connecting tip for pressing two braids of a polyester material used for an industrial membrane filter, wherein the connecting tip 40 is made of nylon A low-melting-point braid 41 formed by weaving the yarn so as to intersect the yarn in a predetermined direction obliquely and having a hollow 41a formed therein; And a core (42) inserted into the hollow (41a), wherein a part of the body of the connecting tip (40) is formed in a distal end portion of the two braids (10) Melting point yarn braid 41 is inserted into the hollows 10a and 10'a respectively and the melting point of the low melting point yarn braid 41 is relatively lower than the melting point of the braid 10 and the core 42, Is inserted into the hollows (10a, 10'a) of the two braids (10a) and is melted by the heat of the welder (50) to be combined with the braid (10).

According to the present invention, it is not necessary to perform a work to find and remove a connection portion that is deformed in a post-process, and the appearance after the coating is good and the connection portion is not cut, Is improved.

Further, since the strength of the braid joint is high, there is no phenomenon that the joint is separated in the coating process, and the inconvenience of stopping the coating apparatus due to the interruption of the operation can be eliminated.

In addition, since the connection of the braids is facilitated, it is possible to connect a plurality of relatively short-length blades, thereby widening selection of materials.

1 is a perspective view showing a structure of a braid.
2 is a sectional view showing the structure of a yarn and a yarn.
3 is a conceptual view showing a braid bonding method according to an embodiment of the prior art;
4 is an exploded perspective view showing a structure of a connecting tip according to an embodiment of the present invention;
5 is a perspective view showing a process of coupling the connecting tip to the ends of two blades;
6 is a cross-sectional view showing an internal structure of a braid connected by a connecting tip;
7 is a conceptual view showing a method of coupling a braid connected by a connecting tip inside a welder.
8 is a perspective view showing a state in which an outer surface of the braid is coated with a film.

Hereinafter, a "tip for connecting a blade using a low melting point yarn" (hereinafter referred to as a "connecting tip") according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 4 is an exploded perspective view illustrating a structure of a connecting tip according to an embodiment of the present invention, FIG. 5 is a perspective view illustrating a process of coupling a connecting tip to two ends of a braid, FIG. Fig.

Since the connecting tip 40 of the present invention is a means for connecting two braids 10 having the same structure as that used in the past, the material and characteristics of the braid 10 described below are the same as those in the prior art .

In the present invention, the braid 10 to be connected is made of polyester and has a specification of 65D / 204F and a melting point of 240 to 250 ° C.

The connecting tip 40 comprises a low melting point braid 41 and a core 42.

The low melting point yarn braid 41 is made of nylon material. The low-melting point braid 41 made of nylon has a melting point of about 140 캜 lower than that of ordinary polyester. The low melting point yarn braid 41 also has the same warp weave structure as the outer braid 10, and a hollow 41a is formed at the center thereof.

A monofilament core 42 is inserted into the hollow 41a. The core 42 is a cylindrical structure made of a nylon material. The core 42 supports the shape of the low melting point braid 41 and secures flexibility after the braid 10 is connected. The core 42 having a diameter of approximately 0.1 to 1.0 mm is used, and a melting point is set to approximately 250 to 260 ° C. Since the melting point of the core 42 is much higher than the melting point of the low melting point braid 41, the core 42 does not melt during the fusing process and can maintain its shape.

Both the low melting point yarn braid 41 and the core 42 are made of nylon, but a material having a lower melting point in the polymerization process is used for the low melting point braid 41. As a result, the melting point of the low melting point yarn 41 is relatively low compared to the melting point of the core 42.

The outer diameter of the low melting point yarn braid 41 is equal to or slightly larger than the inner diameter of the hollows 10a and 10'a formed in the outer braid 10. When the low melting point yarn braid 41 is inserted into the hollows 10a and 10'a of the braid 10, The outer diameter of the core 42 is equal to or substantially equal to the inner diameter of the hollow 41a formed in the low melting point braid 41. [

The core 42 is inserted into the hollow 41a of the low melting point yarn braid 41 and then a small amount of heat is applied from outside the low melting point yarn braid 41 so that the low melting point braid 41 and the core 42 .

Then, the ends of the two braids 10 are brought close to each other, and the body of the connecting tip 40 is inserted into the distal end hollows 10a and 10'a of the braid 10, respectively. When the distal ends of the two braids 10 are brought into close contact with each other as much as possible, the two braids 10 are connected to each other with the connecting tip 40 almost not exposed to the outside.

In such a state, bonding is performed using a fusing means.

FIG. 7 is a conceptual view showing a method of joining the braids connected by the connecting tip inside the welder.

The fusion machine 50 used in the present invention comprises an upper mold 51 and a lower mold 52. Grooves are formed on the surfaces of the upper mold 51 and the lower mold 52 where the braids 10 with the connecting tips 40 are seated. The upper seating portion 51a and the lower seating portion 52a are configured to have the same shape and size as the upper and lower portions of the braid 10 so that the braid 10 is firmly supported.

A means for generating heat is provided inside the upper mold 51 or the lower mold 52. In the present invention, a heater 53 is installed inside the upper mold 51 and the lower mold 52 Although it is shown, it can be installed on only one side.

The braid 10 is seated between the upper mold 51 and the lower mold 52 after connecting the two braids 10 with the connecting tip 40. Then, the upper metal mold 51 and the lower metal mold 52 are closed to perform compression bonding. The upper mold 51 and the lower mold 52 are preheated by the heat generated by the heater 53 and the braid 10 is seated while the low melting point braid 41 is heated to a temperature at which it melts. The connection tip 40 is heated by the heat generated by the heater 53 and the heater 53 is operated only until the temperature between the melting point of the low melting point braid 41 and the core 42 is reached. Preferably the brazing material 10 is heated only to a temperature 10 to 20 ° C higher than the melting point of the low melting point braid 41 to prevent thermal deformation from occurring in the outer braid 10 and the core 42.

The low melting point yarn braid 41 is melted by the heat generated by the heater 53 and the two braids 10 are joined together. Since the outer braid 10 and the core 42 are much higher in melting point, they are substantially unaffected by the welder 50 and retain the original shape.

The braid 10 after completion of the fusion splicing is subjected to a coating process.

8 is a perspective view showing a state in which a coating is applied to the outer surface of the braid.

The coating 60 is coated on the outer surface of the braid 10, so that the coating produced by the membrane filter has a membrane function. The coating film 60 is formed by a resin coating method. The braid 10 on which the resin coating 60 is formed is fabricated into a module suitable for a pressurized or immersion filter.

Coating (60) Once the coating process is completed, it is cut to the required length (several meters), modularized, and then released according to the requirements of the end customer.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the exemplary embodiments and constructions. As will be understood by those skilled in the art. Therefore, it should be understood that the embodiments described above are intended to be illustrative and non-restrictive in all aspects and that the scope of the present invention is indicated by the scope of claims for utility model registration described below rather than the above detailed description, It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

10: Braid 10a, 10'a, 41a: hollow
11: yarn 12: yarn
20: pedestal 30: ultrasonic adapter
31: ultrasonic wave generator 40: connection tip
41: low melting point braid 42: core
50: welding machine 51: upper mold
51a: upper seating portion 52: lower mold
52a: Lower seat portion 53: Heater
60: Coating

Claims

It is a connecting tip used when connecting two pressure-applied Polyester braids for industrial membrane filters.
The connecting tip (40)
A low melting point braid 41 made by weaving a yarn of nylon material so as to be inclined in a predetermined direction and having a hollow 41a formed therein;
And a core (42) inserted into the hollow (41a) of the monofilament of nylon,
A part of the body of the connecting tip 40 is inserted into the hollows 10a and 10'a formed at the distal ends of the two braids 10,
The melting point of the low melting point braid 41 is relatively lower than the melting point of the braid 10 and the core 42,
The low melting point braid 41 is melted by the heat of the welder 50 and is coupled with the braid 10 while being inserted into the hollows 10a and 10'a of the two braids 10. [ , Tips for connecting braids with low melting point.