KR20160128836A - Method of Manufacturing FRP Flange Pipe - Google Patents

Method of Manufacturing FRP Flange Pipe Download PDF

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Publication number
KR20160128836A
KR20160128836A KR1020150060853A KR20150060853A KR20160128836A KR 20160128836 A KR20160128836 A KR 20160128836A KR 1020150060853 A KR1020150060853 A KR 1020150060853A KR 20150060853 A KR20150060853 A KR 20150060853A KR 20160128836 A KR20160128836 A KR 20160128836A
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KR
South Korea
Prior art keywords
inner mold
mold
pipe
flange
separator plate
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Application number
KR1020150060853A
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Korean (ko)
Inventor
공석태
Original Assignee
공석태
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Application filed by 공석태 filed Critical 공석태
Priority to KR1020150060853A priority Critical patent/KR20160128836A/en
Priority to PCT/KR2015/005111 priority patent/WO2016175369A1/en
Publication of KR20160128836A publication Critical patent/KR20160128836A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/0004—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/24—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

The present invention relates to a method of manufacturing an FRP flange pipe, more specifically, a flange can be formed on a pipe by a simple method, a manufacturing cost can be reduced, and a pipe and a flange can be integrally formed, To a method of manufacturing an FRP flange tube.

Description

TECHNICAL FIELD The present invention relates to a FRP flange pipe manufacturing method,

The present invention relates to a method of manufacturing an FRP flange pipe, more specifically, a flange can be formed on a pipe by a simple method, a manufacturing cost can be reduced, and a pipe and a flange can be integrally formed, To a method of manufacturing an FRP flange tube.

In general, fiberglass reinforced plastic (FRP) is produced by forming reinforcing fibers of high strength, such as glass fiber, in the form of a winding or fabric, and then curing the reinforcing fibers such as polyester, epoxy, phenol, and purine, It has strong shear strength, easy to cut and process, easy to handle due to its light weight, excellent chemical resistance and corrosion resistance, and is widely used in aerospace parts, automobile parts, civil engineering and building materials.

In the process of manufacturing a pipe using the FRP, a fiber impregnated in a filament resin is wound around an outer surface of a mandrel having a predetermined diameter, and when the resin is cured, it is demolded from the mandrel to form a filament- Is formed.

On the other hand, in order to join the pipe and the pipe, a flange must be formed at the end of each pipe. However, in the conventional method for forming the flange in the pipe, the flange is manufactured in the pipe by the plastic working method in which the pipe is cut, so that it takes a lot of time and the product cost is increased, and the product is not uniform There is a problem.

In order to solve this problem, Japanese Laid-Open Patent Application No. 1991-0009354 proposes a method of manufacturing an FRP flange by winding a fiberglass around a metal mold having a flange shape, followed by curing and demolding. However, this method is configured to wind the fiberglass in only one direction, so that there is a problem in that the product is not rigid because it is not woven and is easily split.

Korean Patent Publication No. 1991-0009354

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems of the prior art described above by providing a flange in a pipe by a simple method, And to provide a method of manufacturing an FRP flange pipe that improves the quality of a product.

According to an aspect of the present invention, there is provided a method of manufacturing a semiconductor device, the method including: mounting a first separator and a second separator on a center of a cylindrical shaft; An inner mold mounting step of mounting a first inner mold and a second inner mold at both ends of the rotating shaft in the direction of the first separating plate and the second separating plate; The reinforcing fibers are wound around the outer periphery of the first inner mold to form a first pipe and the reinforcing fibers are wound around the outer periphery of the first separator and along the outer periphery of the first separator, A first flange connected to the first pipe is formed and a reinforcing fiber is wound around an outer periphery of the second separator and an outer periphery of the second separator to form a second flange, And a second pipe connected to the second flange is formed as the reinforcing fiber is wound along the outer periphery of the second flange. Wherein a first outer mold and a second outer mold are mounted so as to cover the first inner mold and the second inner mold at both ends of the rotary shaft, and the end portions of the first outer mold and the second outer mold, 1 external mold moving in the direction of the separating plate and the second separating plate; And a second cut portion provided at a position facing the outer circumference of the second separation plate of the second flange is cut at a position facing the outer periphery of the first separation plate of the first flange, A cutting process; A first demolding process in which the first outer mold and the second outer mold are demolded in the first inner mold and the second inner mold; And the first pipe and the first flange are deformed in the first inner mold and the first separation plate and the second pipe and the second flange are deformed in the second inner mold and the second separation plate Wherein the reinforcing fibers positioned in front of the rotary shaft are moved from the first inner mold toward the second inner mold or vice versa, A winding step of winding a reinforcing base oil on an outer circumference of the first separator plate, the second separator plate and the second inner mold; And when the reinforcing fibers are wound around the outer periphery of the first separator plate or the second separator plate, the guide portion is rotated along the outer periphery of the first separator plate and the second separator plate, And a guide step of guiding the reinforcing fibers wound on the outer periphery of the second separator plate so as not to flow down to the first inner mold or the second inner mold.

When the guide portion is positioned so as to face the reinforcing fiber, the guide portion is positioned behind the rotation shaft so as to be located in the direction opposite to the reinforcing fiber located in front of the rotation shaft, The guide portion is provided so that the reinforcing fibers wound on the outer circumferences of the first and second separator plates do not flow in the direction of the first inner mold or the second inner mold, And the second separator is rotated along the outer periphery of the first separator and the second separator.

In addition, in the winding step, the reinforcing fibers are wound diagonally while being moved in one direction or another direction along the longitudinal direction of the rotating shaft, and when the reinforcing fibers are moved in the other direction in one direction of the rotating shaft, And the FRP flange tube is manufactured by the method of the present invention.

The method of claim 1, further comprising the step of applying a releasing agent to an outer periphery of the first inner mold, the first separator plate, the second inner mold, and the second separator plate, A method of manufacturing a flange tube is provided.

Further, the present invention further provides a method of manufacturing an FRP flange tube, wherein the mold releasing agent is applied to the inner peripheral edge of the first outer mold and the inner peripheral edge of the second outer mold prior to the outer mold mounting step.

When the first inner mold and the second inner mold are mounted in the direction of the first separator plate and the second separator plate in the process of mounting the inner mold, the first separator plate and the second separator plate Wherein a first insert part and a second insert part are formed so that the first inner mold and the second inner mold can be inserted, and in the outer mold mounting step, the ends of the first outer mold and the second outer mold, The first inner mold and the second inner mold are pressed to be inserted into the first insertion portion and the second insertion portion while being moved in the direction of the first separator plate and the second separator plate, The first pipe and the second pipe formed on the second inner mold are moved in the direction of the first separator plate and the second separator plate.

According to the present invention, a flange can be formed on a pipe by a simple method, the manufacturing cost can be reduced, and the pipe and the flange can be integrally formed and uniformly manufactured, thereby improving the quality of the product. Further, since the reinforcing fibers are configured to be wound in a woven shape in both directions, the rigidity of the product is improved.

In addition, the reinforcing fibers wound on the outer circumferences of the first and second separator plates are guided by the guide portion, so that the reinforcing fibers are prevented from flowing in the direction of the first inner mold or the second inner mold.

In addition, the first pipe formed in the first inner mold and the second pipe formed in the second inner mold are moved in the direction of the first separator plate and the second separator plate to fill the first rectangular space and the second rectangular space, 1, 2 square space is offset.

1 is a schematic view illustrating a method of manufacturing a FRP flange pipe according to a preferred embodiment of the present invention.
FIG. 2 is a view illustrating a process of installing a separator plate and a process of mounting an inner mold in a method of manufacturing a FRP flange pipe according to a preferred embodiment of the present invention.
FIGS. 3 to 6 are views for explaining a pipe forming process of a method of manufacturing an FRP flange pipe according to a preferred embodiment of the present invention.
FIG. 7 is a view illustrating a process of mounting an outer mold in a method of manufacturing a FRP flange pipe according to a preferred embodiment of the present invention.
8 is a view for explaining a cutting process of the FRP flange pipe manufacturing method according to the preferred embodiment of the present invention.
FIG. 9 is a view illustrating a first demoulding process and a second demoulding process of a method of manufacturing an FRP flange pipe according to a preferred embodiment of the present invention.

Hereinafter, a method for manufacturing a FRP flange tube according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic view illustrating a method of manufacturing a FRP flange pipe according to a preferred embodiment of the present invention.

Referring to the drawings, a method of manufacturing an FRP flange pipe according to a preferred embodiment of the present invention includes a first separator plate 140 and a second separator plate 150 mounted at the center of a cylindrical rotary shaft 110, An inner mold mounting process S12 in which the first inner mold 120 and the second inner mold 130 are mounted on the rotary shaft 110, the first inner mold 120 rotated along the rotating shaft 110, The reinforcing fibers W are wound around the outer periphery of the mold 120 and the first separator plate 140 so that the first pipe 12 having the first flange 14 and the first cut portion 16 10 and the reinforcing fibers W are wound around the outer circumferences of the second separator plate 150 and the second inner mold 130 rotated along the rotation axis 110 and the second pipe 22 and the second A pipe forming process S14 for forming a second pipe 20 having a flange 24 and a second cut 26 and a pipe forming process S14 for forming a first pipe 20 and a second pipe 20 to cover the first inner mold 120 and the second inner mold 130, The outer mold 160 and the second An outer mold mounting process S16 in which the sub mold 170 is mounted, a cutting process in which the first cut portion 16 of the first pipe 10 and the second cut portion 26 of the second pipe 20 are cut A first demolding process S20 in which the first outer mold 160 and the second outer mold 170 are demolded from the first inner mold 120 and the second inner mold 130, The first pipe 10 having the first flange 14 and the first flange 14 is demolded from the first inner mold 120 and the second pipe 20 having the second pipe 22 and the second flange 24 And a second demolding process S22 in which the second inner mold 130 is demolded.

FIG. 2 is a view illustrating a process of installing a separator plate and a process of mounting an inner mold in a method of manufacturing a FRP flange pipe according to a preferred embodiment of the present invention.

2, an FRP flange pipe manufacturing apparatus 100 (FIG. 7) for advancing a manufacturing method of a FRP flange pipe according to a preferred embodiment of the present invention includes a rotary shaft 110, a first separator plate 140, A second outer mold 150 (FIG. 7), a second outer mold 150 (FIG. 7), a second inner mold 120 (second inner mold) Member 180 as shown in FIG.

The rotary shaft 110 is elongated along the longitudinal direction like a circular column. The first separator plate 140 and the second separator plate 150 are each formed in a disc shape or the like and are inserted into the rotary shaft 110 and positioned at the longitudinal center of the rotary shaft 110. The first inner mold 120 is elongated to cover one side of the rotary shaft 110 and inserted from one end of the rotary shaft 110 toward the first separator plate 140. The second inner mold 130 is elongated to cover the other side of the rotating shaft 110 and inserted from the other end of the rotating shaft 110 toward the second separating plate 150.

The first outer mold 160 and the second outer mold 170 will be described below with reference to FIG.

The guide member 180 includes a guide portion 182, a rotation connecting portion 184, and a clutch 186. The guide portion 182 is formed to cover the outer circumference of the first separator plate 140 and the outer circumference of the second separator plate 150 integrally. It is formed so as to cover only one portion without covering the entire periphery. The guide portion 182 may be bent in a "C" shape so as to cover the outer circumferences of the first separator plate 140 and the second separator plate 150. The guide part 182 is configured to be rotatable along the outer circumference of the first separator plate 140 and the second separator plate 150. The first separator plate 140 and the second separator plate 150 A space is provided so that the reinforcing fibers W to be described later can be wound around the outer circumferences of the first separator plate 140 and the second separator plate 150, The first inner plate 120 and the second inner mold 130 are guided by the first separator plate 140 and the second separator plate 150 so as not to slip in the direction of the first inner mold 120 and the second inner mold 130. One end of the rotation connection portion 184 is connected to the guide portion 182 and the other end portion of the rotation connection portion 184 extends in the direction of one end of the rotation shaft 110. The clutch 186 is mounted at one end of the rotary shaft 110 and is connected to the rotary connection part 184 to transmit or block the power of the rotary shaft 110 to the rotary connection part 184. The clutch 186 is of a typical configuration, and a detailed description of the clutch 186 in the present invention will be omitted.

A method of manufacturing an FRP flange pipe according to a preferred embodiment of the present invention using the FRP flange pipe manufacturing apparatus 100 includes a first separating plate 140 and a second separating plate 150 and the first inner mold 120 and the second inner mold 130 in the direction of the first separator plate 140 and the second separator plate 150 at both ends of the rotary shaft 110, The inner mold mounting process is performed. Thereafter, the clutch 186 is inserted into one end portion of the rotary shaft 110, and the guide member 180 is mounted on the rotary shaft 110. At this time, a releasing agent may be applied to the outer circumferences of the first inner mold 120, the first separator plate 140, the second inner mold 130, and the second separator plate 150. The mold release agent may be a first pipe 10 (shown in FIG. 7) formed along a first inner mold 120, a first separator plate 140, a second inner mold 130 and a second separator plate 150, And the second piping 20 (Fig.

When the first inner mold 120 and the second inner mold 130 are mounted in the direction of the first separator plate 140 and the second separator plate 150, The first insertion portion 140a and the second insertion portion 150a may be formed in the plate 150 so that the first inner mold 120 and the second inner mold 130 can be inserted. The first inner mold 120 and the second inner mold 130 are moved by pressing the first outer mold 160 and the second outer mold 170 to be described later.

FIGS. 3 to 6 are views for explaining a pipe forming process of a method of manufacturing an FRP flange pipe according to a preferred embodiment of the present invention.

Referring to FIG. 3, the pipe forming process is performed along the first inner pipe 120, the first separator plate 140, the second inner mold 130, and the second separator plate 150, And the second pipe 20 is formed. The first pipe 12 of the first pipe 10 is formed while the rotating shaft 110 is rotated and the reinforcing fibers W are wound along the outer circumference of the first inner mold 120, The reinforcing fibers W are wound around the outer side of the separator plate 140 and the outer circumferential edge of the first separator plate 140 so that the first flange of the first pipe 10 connected to the first pipe 12 14 and a first cut portion 16 are formed. The reinforcing fibers W are wound along the outer periphery of the second separator plate 150 and the outer periphery of the second separator plate 150 so that the second cut portion 26 of the second pipe 20 and the second flange The second pipe 22 of the second pipe 20 connected to the second flange 24 is formed while the reinforcing fibers W are wound along the outer circumference of the first inner mold 120 do. At this time, the reinforcing fibers W are wound diagonally while being moved in one direction or another direction along the longitudinal direction of the rotating shaft 110, and the reinforcing fibers W are moved in the other direction in one direction of the rotating shaft 110 The direction of the oblique line is reversed so that the reinforcing fibers W are arranged in a weave shape.

The reinforcing fibers W are composed of, for example, carbon fiber, glass fiber, or the like, and may be wound around a plurality of bobbins (not shown). The bobbin is positioned in front of the rotating shaft 110 and moves along the rotating shaft 110 to feed the reinforcing fibers W in the direction of the rotating shaft 110. At this time, the reinforcing fibers W are moved from the first inner mold 120 to the second inner mold 130, or vice versa, and the first inner mold 120, 140, the second separator plate 150 and the second inner mold 130, respectively.

4 and 5, when the reinforcing fibers W are moved in the direction of the second separator plate 150 from the first inner mold 120, the guide portion 182 of the guide member 180 is reinforced The clutch 186 is actuated and the power of the rotating shaft 110 is cut off, which is located in the opposite direction to the front of the rotating shaft 110 to which the fibers W are supplied, i.e., behind the rotating shaft 110. This is because when the guide portion 182 is moved forward of the rotary shaft 110 in a state where the reinforcing fibers W are continuously supplied in the direction of the rotary shaft 110 from the front of the rotary shaft 110, The guide member 180 is wound on the outer circumference of the guide member 180 to cause a defective product. Therefore, the guide member 180 is positioned behind the rotary shaft 110 to prevent this.

When the reinforcing fibers W are moved in the direction of the second inner mold 130 from the second separator plate 150 as shown in FIG. 6, the reinforcing fibers W are guided by the second The outer periphery of the inner mold 130 is wound. At this time, the clutch 186 transmits the power of the rotating shaft 110 to the guide portion 182 so that the guide portion 182 rotates along the outer periphery of the first and second separator plates 140 and 150, The reinforcing fibers W wound on the outer periphery of the first and second separator plates 140 and 150 are guided by the guide portion 182 and are guided in the direction of the first inner mold 120 or the second inner mold 130 There is an effect of not flowing down.

As described above, the reinforcing fibers W are wound in an oblique direction, and the reinforcing fibers W are wound around the portions where the first inner mold 120 and the first separator 140 meet with each other and the portions where the second inner mold 130 and the second separator A first rectangular space P1 and a second rectangular space P2 in which the reinforcing fibers W can not be wound are formed at the portions where the plates 150 meet. In order to eliminate the first and second rectangular spaces P1 and P2, an outer mold mounting process is performed as shown in the following drawings.

FIG. 7 is a view illustrating a process of mounting an outer mold in a method of manufacturing a FRP flange pipe according to a preferred embodiment of the present invention.

Referring to FIG. 7, the outer mold mounting process is for eliminating the first and second rectangular spaces P1 and P2 which are generated when the reinforcing fibers W are not wound in the pipe forming process. For this purpose, The first outer mold 160 and the second outer mold 170 are mounted at both ends so as to cover the first inner mold 120 and the second inner mold 130. At this time, the guide member 180 has been removed from the rotating shaft 110 in advance.

The first outer mold 160 is formed to cover the first inner mold 120. One end of the first outer mold 160 is formed with a first insertion hole 160a for inserting one end of the rotation shaft 110, The first guide hole 160b is formed so that the inner mold 120 is accommodated. At this time, the first pressing end 162 is provided at the other end of the first outer mold 160. The second outer mold 170 is formed to cover the second inner mold 130. A second insertion hole 170a is formed at one end of the second outer mold 170 so that the other end of the rotation shaft 110 is inserted, A second guide hole 170b is formed so that the inner mold 130 is accommodated. At this time, the second pressing end 172 is provided at the other end of the second outer mold 170.

The lengths of the first and second outer molds 160 and 170 are shorter than the lengths of the first and second inner molds 120 and 130. As a result, after the first and second outer molds 160 and 170 are inserted to cover the first and second inner molds 120 and 130 at both ends of the rotary shaft 110, the first and second pressing ends 162 and 162, The first and second outer molds 160 and 170 separate the first and second inner molds 120 and 130 from the first and second outer molds 140 and 150, So that the first and second inner molds 120 and 130 are inserted into the first and second insertion portions 140a and 150a. At this time, the first pipe 12 formed in the first inner mold 120 and the second pipe 22 formed in the second inner mold 130 are moved in the direction of the first separator plate 140 and the second separator plate 150 The first rectangular space P1 and the second rectangular space P2 are filled and the first and second rectangular spaces P1 and P2 are offset.

On the other hand, before the first and second outer molds 160 and 170 are inserted to cover the first and second inner molds 120 and 130, the release agent is applied to the inner periphery of the first and second outer molds 160 and 170 . The release agent serves to separate the first pipe 10 and the second pipe 20 from the first outer mold 160 and the second outer mold 170.

8 is a view for explaining a cutting process of the FRP flange pipe manufacturing method according to the preferred embodiment of the present invention.

Referring to FIG. 8, in the cutting process, the first and second cutouts 16 and 26 of the first and second pipes 10 and 20 formed along the outer circumferences of the first and second split plates 140 and 150 : Fig. 7), and the first and second cut portions 16 and 26 are cut by using a separate cutter (not shown) or the like.

FIG. 9 is a view illustrating a first demoulding process and a second demoulding process of a method of manufacturing an FRP flange pipe according to a preferred embodiment of the present invention.

9 (a), the first demolding process is performed such that the first outer mold 160 and the second outer mold 170 are separated from the first inner mold 120 and the second inner mold 130 It is demolded to the outside.

9 (b), a first pipe 10 having a first pipe 12 and a first flange 14 is connected to the first inner mold 120 and the first separator plate 140 And the second pipe 20 having the second pipe 22 and the second flange 24 is demolded from the second inner mold 130 and the second separator plate 150.

As described above, according to the present invention, the flange can be formed on the pipe by a simple method, the manufacturing cost can be reduced, and the pipe and the flange can be integrally formed and uniformly manufactured. Further, the present invention is configured to wind the reinforcing fibers (W) in a woven shape in both directions, thereby improving the rigidity of the product.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the appended claims. It should be understood that the technical idea belonging to the scope of the claims also belongs to the present invention.

10: first pipe 12: first pipe
14: first flange 16: first cut portion
20: second pipe 22: second pipe
24: second flange 26: second cut portion
100: Manufacturing apparatus of FRP flange tube
110: rotating shaft 120: first inner mold
130: second inner mold 140: first partition plate
140a: first inserting portion 150: second separating plate
150a: second insertion portion 160: first outer mold
160a: first insertion hole 160b: first guide hole
162: first pressing end 170: second outer mold
170a: second insertion hole 170b: second guide hole
172: second pressing end 180: guide member
182: guide portion 184:
186: Clutch

Claims (6)

A separating plate mounting step in which a first separating plate and a second separating plate are mounted at the center of a rotary shaft of a cylindrical shape;
An inner mold mounting step of mounting a first inner mold and a second inner mold at both ends of the rotating shaft in the direction of the first separating plate and the second separating plate;
The reinforcing fibers are wound around the outer periphery of the first inner mold to form a first pipe and the reinforcing fibers are wound around the outer periphery of the first separator and along the outer periphery of the first separator, A first flange connected to the first pipe is formed and a reinforcing fiber is wound around an outer periphery of the second separator and an outer periphery of the second separator to form a second flange, And a second pipe connected to the second flange is formed as the reinforcing fiber is wound along the outer periphery of the second flange.
Wherein a first outer mold and a second outer mold are mounted so as to cover the first inner mold and the second inner mold at both ends of the rotary shaft, and the end portions of the first outer mold and the second outer mold, 1 external mold moving in the direction of the separating plate and the second separating plate;
And a second cut portion provided at a position facing the outer circumference of the second separation plate of the second flange is cut at a position facing the outer periphery of the first separation plate of the first flange, A cutting process;
A first demolding process in which the first outer mold and the second outer mold are demolded in the first inner mold and the second inner mold; And
Wherein the first pipe and the first flange are demolded from the first inner mold and the first separation plate and the second pipe and the second flange are demolded from the second inner mold and the second separation plate, 2 demoulding process,
The pipe forming process comprises:
The first inner mold, the first inner mold, the first inner mold, the second inner mold, and the second inner mold, the reinforcement fibers positioned in front of the rotary shaft are moved in the direction of the second inner mold from the first inner mold, A winding step of winding a reinforcing sheath on the outer periphery of the second inner mold; And
When the reinforcing fibers are wound around the outer periphery of the first separator plate or the second separator plate, the guide part is rotated along the outer periphery of the first separator plate and the second separator plate, And guiding the reinforcing fibers wound on the outer periphery of the second separator plate so as not to flow down to the first inner mold or the second inner mold.
The method according to claim 1,
In the pipe formation process,
Wherein when the guide portion is positioned to face the reinforcing fibers, the guide portion is positioned behind the rotating shaft so as to be positioned in the direction opposite to the reinforcing fibers positioned in front of the rotating shaft,
When the guide portion is positioned so as not to face the reinforcing fibers, the guide portion is configured such that the reinforcing fibers wound around the outer circumferences of the first and second split plates flow in the direction of the first inner mold or the second inner mold Wherein the first separator plate and the second separator plate are rotated along an outer periphery of the first separator plate and the second separator plate so as not to be lowered.
The method according to claim 1,
In the winding step, the reinforcing fibers are wound in an oblique direction while being moved in one direction or another direction along the longitudinal direction of the rotating shaft. When the reinforcing fibers are moved in the other direction in one direction of the rotating shaft, Wherein the FRP flange pipe is made of a synthetic resin.
The method according to claim 1,
Prior to the piping formation process,
Further comprising the step of applying a releasing agent to an outer periphery of the first inner mold, the first separator plate, the second inner mold, and the second separator plate.
The method according to claim 1,
Prior to the outer mold mounting process,
Further comprising the step of applying a releasing agent to the inner peripheral edge of the first outer mold and the second outer mold.
The method according to claim 1,
Wherein when the first inner mold and the second inner mold are mounted in the direction of the first separator plate and the second separator plate in the process of mounting the inner mold, A first insert part and a second insert part are formed so that the first inner mold and the second inner mold can be inserted,
Wherein the first outer mold and the second outer mold are moved in the direction of the first separator plate and the second separator plate in the process of mounting the outer mold, The first pipe formed on the first inner mold and the second pipe formed on the second inner mold are pressed to be inserted into the first insertion portion and the second insertion portion in the direction of the first separation plate and the second separation plate Wherein the FRP flange tube is moved in the direction of the arrow.
KR1020150060853A 2015-04-29 2015-04-29 Method of Manufacturing FRP Flange Pipe KR20160128836A (en)

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PCT/KR2015/005111 WO2016175369A1 (en) 2015-04-29 2015-05-21 Method for manufacturing frp flange pipe

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101991723B1 (en) * 2019-01-28 2019-06-21 유재완 Method for manufacturing fibre reinforced plastic pipe
KR102263103B1 (en) * 2021-03-24 2021-06-08 이호설 Method for manufacturing frp flange pipe

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR910009354A (en) 1989-11-16 1991-06-28 박만식 Manufacturing method of F.R.P. flange

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