KR100778774B1 - Pipe with metal band and making method thereof - Google Patents

Abstract

The present invention relates to a composite tube and a method for manufacturing the same, which is formed by coating by integrally supplying a synthetic resin to the inside and outside while supplying a metal plate by molding a metal tube, and more specifically, by forming a hole by supplying a metal plate material Then, it is supplied to a winding device and wound like a tube to form a metal tube, while supplying molten synthetic resin to the inside and the outside to form a compression coating to maintain the required strength, and to reduce the consumption of raw materials in a composite tube using a metal plate and its manufacturing method It is about.

The present invention is a metal tube 10 formed in the form of a tube along the connecting line 113 by the spirally supplied metal plate 11 of the corrugated cross-section hole (111);

It is characterized in that the molten resin is coated inside and outside the metal tube 10 to form an integral synthetic resin tube 1.

Metal plate, pipe, single collar, winding device

Description

Composite pipe using metal plate and its manufacturing method {PIPE WITH METAL BAND AND MAKING METHOD THEREOF}

1 is a plan view of a metal sheet of the present invention

Figure 2 is a plan view of a hole perforated in the metal sheet of the present invention

Figure 3 is a perspective view of a hole perforated in the metal sheet of the present invention

Figure 4 is a plan view of the molding apparatus of the present invention composite pipe

Fig. 5 is a perspective view showing a state of forming a metal tube from the metal sheet member of the first embodiment of the present invention.

6 is a front view showing a state in which a synthetic resin tube is formed by forming a synthetic resin layer on the metal tube of the first embodiment of the present invention;

Fig. 7 is a longitudinal sectional cutaway view of a state in which a synthetic resin layer is formed by forming a synthetic resin layer on the metal tube of the first embodiment of the present invention;

Fig. 8 is a cross-sectional side view of the metal sheet of the first embodiment of the present invention.

Fig. 9 is a longitudinal cutaway view of the metal tube of the first embodiment of the present invention;

10 is a longitudinal sectional view of the main portion in the state where synthetic resin is supplied to the metal tube according to the first embodiment of the present invention;

Fig. 11 is a longitudinal sectional cutaway view of the state in which synthetic resin is continuously supplied to the metal tube of the first embodiment of the present invention;

12 is a longitudinal sectional view of the main portion in a state in which the synthetic resin supplied to the metal tube of the first embodiment of the present invention is press-molded;

Fig. 13 is a longitudinal sectional view of the synthetic resin tube molded according to the first embodiment of the present invention.

14 is a longitudinal cross-sectional view of a composite pipe combined with a single collar according to a first embodiment of the present invention;

Fig. 15 is a lateral cutaway view of a corrugated metal sheet of a second embodiment of the present invention.

Fig. 16 is a longitudinal sectional view of the metal tube of the second embodiment of the present invention.

17 is a longitudinal sectional view of the main portion in the state where synthetic resin is supplied to a metal tube according to a second embodiment of the present invention;

Fig. 18 is a longitudinal sectional cutaway view of a state in which a synthetic resin supplied to a metal tube according to a second embodiment of the present invention is press-molded;

19 is a longitudinal cutaway view of a synthetic resin tube molded according to a second embodiment of the present invention;
20 is a longitudinal cross-sectional view of a composite pipe combined with a single collar according to a second embodiment of the present invention;

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21 is a longitudinal sectional view of the main portion in the state where synthetic resin is supplied to the metal tube according to the third embodiment of the present invention;

Fig. 22 is a longitudinal cutaway view of a synthetic resin tube molded according to a third embodiment of the present invention.

Figure 23 is a longitudinal cross-sectional view of the composite pipe combined with a single-colored collar according to a third embodiment of the present invention

[Description of Symbols for Main Parts of Drawing]

A: compound pipe B: forming apparatus
1: synthetic resin tube 10: metal tube
11 metal plate 111 hole
112: wave portion 113: connection line

12, 12 ': synthetic resin layer 13: single color
131: flange 132: protrusion

20: winding device 21: rotary roller

22: punching device 24: rotating device
30: extruder

31: extruded nozzle 32: external synthetic resin
34: outer forming roller

40: auxiliary extruder

41: auxiliary extrusion nozzle

44: internal forming roller

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The present invention relates to a composite tube and a method for manufacturing the same, which are formed by supplying a metal sheet to form a metal tube and supplying synthetic resin to the inside and the outside to form a coating.

More specifically, the metal plate is supplied to form holes in the perforations, and then supplied to the winding apparatus to form the metal tube while supplying molten synthetic resin to the inside and the outside to form the coating layer in the shape of a wave to maintain the required strength and to reduce the amount of raw material. The present invention relates to a composite pipe using a metal plate material to be consumed, and a manufacturing method thereof.

Conventional sewage pipes melt a resin to form a profile having one of various hollows by means of a mold, or a profile formed by integrally molding a reinforcement wall having a plurality of hollows therein, and then cool and supply the profile to the winding apparatus spirally. The molten resin is supplied in between to connect the portions to which the profile is welded to form a smooth tube.

However, pipes made of synthetic resin pipes are very weak due to their physical properties and cannot be used for high strength.Therefore, their use was very limited, and after being buried underground, leaks were easily generated at the joints due to the coefficient of thermal expansion. There was this.

In addition, it is stored in a state exposed to sunlight for a long time after molding into a synthetic resin tube, and stacked in a stacked state, it is difficult to connect during laying because it does not maintain the origin by the force pressed from the upper side and maintains the elliptical state of the crushed state. This was to occur.

In addition, as the price of raw materials increases with the price of crude oil, it is very difficult to maintain a production facility because the cost of processing and cost is greater than the consumption of raw materials.

The present invention has been made to solve such a conventional drawback, and the object of the present invention is to form a cylindrical metal tube having a corrugated cross-section by spirally feeding a thin strip-shaped metal sheet material and then punching it into a winding device.

An object of the present invention is to form a cylindrical metal tube having a corrugated shape by coating with a molten resin supplied from an extruder inside and outside to coat the entire surface of the metal tube to form a synthetic resin tube.

According to the present invention, since a hole is formed in the metal sheet, the molten resin supplied from the inside and the outside of the metal tube penetrates each other, and thus the inside and the outside are integrally formed to prevent the molten resin from being separated.

The present invention provides a metal sheet material which forms a tube-shaped metal tube along a connecting line by boring holes and supplying it helically;

The synthetic resin melted into and out of the metal tube is coated so as to have a cross-sectional shape of a corrugated shape, thereby forming an integral synthetic resin tube.

형태로 절곡되어 파형부(112)가 형성되며, 상기 금속관(10)의 내부 및 외부에 성형된 합성수지층(12)(12')도 상기 금속판재(11)의 절곡된 형태에 따라 파형부(122)가 형성되며, 상기 복합관(A)의 일측 단부에 상기 편수칼라(13)가 일체로 결합되어지되, 상기 편수칼라(13)의 단부외주연부에는 플렌지(131)가 형성되고, 중앙부 내주연부에는 돌출부(132)가 돌출형성되어, 상기 돌출부(132)에 상기 합성수지관(1)의 일측단부가 맞대어지면서 결합되어지도록 구비되는 것을 특징으로 한다.
그리고 본 발명의 금속판재를 이용한 복합관 제조방법은,
폭과 두께를 갖는 금속판재(11)가 연속해서 공급되는 금속판재 공급단계(S01);
상기 금속판재(11)를 공급하는 과정에서 연속적으로 타공하는 타공장치(22)를 통하여 다수의 구멍(111)을 형성하는 금속판재 타공단계(S02);
타공된 상기 금속판재(11)가 단면이

형태의 파형형상로 절곡된 금속판재로 형성된 후, 와인딩장치(20)에 연속해서 나선형으로 공급되어 원통형 형상의 금속관(10)을 성형하는 와인딩 단계(S03);
원통형 형상의 상기 금속관(10)에 대해 용융된 수지를 압출기(30)의 압출노즐(31)로부터 띠 형태로 하여 상기 금속관(10)의 외부에 나선형으로 공급하고, 용융된 수지를 보조 압출기(40)의 보조 압출노즐(41)로부터 띠 형태로 하여 상기 금속관(10)의 내부에 나선형으로 공급하여 상기 금속관(10)의 내주면 및 외주면에 합성수지를 코팅하는 합성수지 코팅단계(S04);
상기 금속관(10)의 내부 및 외부에 합성수지층(12)(12')으로 코팅된 상태에서 일정한 길이로 절단하는 절단단계(S06)를 포함하여 이루어지는 금속판재를 이용한 복합관의 제조방법에 있어서,
상기 합성수지 코팅단계(S04) 이후, 상기 금속관(10)의 외부에 코팅된 상기 합성수지층(12')의 겹쳐지는 부분을 외부 성형 로울러(34)에 의하여 압착성형하고, 상기 금속관(10)의 내부에 코팅된 상기 합성수지층(12)의 겹쳐지는 부분을 내부 성형 로울러(44)에 의하여 파형형상으로 압착성형되어 내부 및 외부의 합성수지층(12)(12')이 파형부(122)가 형성되어 균일한 두께로 코팅이 이루어지는 압착성형단계(S05)를 더 포함하며,
상기 와인딩 단계(S03)는 상기 와인딩장치(20)에 설치된 다수의 회전로울러(21) 외측으로 파형형상의 상기 금속판재(11)를 나선형으로 공급받아 파형형상의 상기 금속관(10)이 형성되도록 하며,
상기 압착성형단계(S05)는 상기 금속관(10)의 내부 및 외부에 설치된 내부 성형 로울러(44) 및 외부 성형 로울러(34)에 의하여 상기 금속관(10)에 코팅된 상기 합성수지층(12)(12')의 연결부분이 눌려져 정리되어 코팅이 이루어지되, 외부의 상기 합성수지층(12')은 파형형상의 로울러면을 형성한 상기 외부 성형 로울러(34)에 의하여 파형형상으로 코팅되고, 내부의 상기 합성수지층(12)는 파형형상의 로울러면을 형성한 상기 내부 성형 로울러(44)에 의하여 파형형상으로 코팅되도록 구비되는 것을 특징으로 한다.
본 발명의 제1실시로는 도 1 내지 도 14에서와 같이, 일정한 폭(조절 가능하되 5∼200mm 정도)을 갖는 금속판재(11)는 0.5∼10mm 정도의 두께를 갖도록 하는 것이며, 금속판재(11)를 공급하는 과정에서 연속적으로 타공하는 타공장치(22)를 통하여 구멍(111)을 형성한다.Composite pipe using the metal plate of the present invention for achieving the above object is a single-colored collar 13 in the synthetic resin tube (1) in which the synthetic resin layer (12, 12 ') is formed inside and outside the cylindrical metal tube (10). In the combined pipe (A) is combined, the metal tube 10 is formed by winding the band-shaped metal plate member 11 in a spiral form, the metal plate member 11 is formed with a plurality of holes 111 and Cross section

The curved portion 112 is bent to form a shape, and the synthetic resin layers 12 and 12 ′ formed inside and outside the metal tube 10 also have a corrugated portion according to the bent shape of the metal plate 11. 122 is formed, the knitting collar 13 is integrally coupled to one end of the composite pipe (A), the flange 131 is formed on the outer peripheral portion of the end of the knitting collar 13, the central inner peripheral portion The protrusion 132 is formed to protrude, characterized in that the one side end of the synthetic resin tube 1 is coupled to the protrusion 132 is coupled to each other.
And the composite pipe manufacturing method using the metal sheet of the present invention,
A metal plate supply step (S01) in which a metal plate member 11 having a width and a thickness is continuously supplied;
Metal plate drilling step (S02) to form a plurality of holes (111) through the punching device 22 to be continuously punched in the process of supplying the metal sheet material (11);
The perforated metal plate 11 has a cross section

A winding step (S03) of forming a metal tube 10 having a cylindrical shape by being spirally supplied to the winding device 20 after being formed of a metal plate bent into a wavy shape of a shape;
The molten resin with respect to the metal tube 10 of the cylindrical shape in the form of a band from the extrusion nozzle 31 of the extruder 30 in a spiral shape to the outside of the metal tube 10, the molten resin is supplied to the auxiliary extruder 40 Synthetic resin coating step (S04) of coating a synthetic resin on the inner circumferential surface and the outer circumferential surface of the metal tube 10 by spirally feeding the inside of the metal tube 10 in the form of a strip from the auxiliary extrusion nozzle 41;
In the manufacturing method of a composite tube using a metal plate material comprising a cutting step (S06) to cut to a certain length in a state coated with a synthetic resin layer 12 (12 ') on the inside and outside of the metal tube 10,
After the synthetic resin coating step (S04), the overlapping portion of the synthetic resin layer 12 ′ coated on the outside of the metal tube 10 is press-molded by an external forming roller 34, and the inside of the metal tube 10 The overlapping portion of the synthetic resin layer 12 coated on the surface is press-molded into a wave shape by the internal forming roller 44 so that the internal and external synthetic resin layers 12, 12 'are formed with a corrugated portion 122. Further comprising a compression molding step (S05) the coating is made to a uniform thickness,
The winding step (S03) receives the corrugated metal plate 11 in a spiral form to the outside of the plurality of rotary rollers 21 installed in the winding device 20 so that the corrugated metal tube 10 is formed. ,
The pressing molding step (S05) is the synthetic resin layer 12, 12 is coated on the metal tube 10 by an internal forming roller 44 and an external forming roller 34 installed inside and outside the metal tube 10. ') The connecting portion of the pressing is arranged to make the coating, the outer synthetic resin layer (12') is coated in a wave shape by the outer forming roller 34 formed a wave shape roller surface, the inside of the The synthetic resin layer 12 is characterized in that it is provided so as to be coated in a wave shape by the inner forming roller 44 having a corrugated roller surface.
In the first embodiment of the present invention, as shown in Figures 1 to 14, the metal plate 11 having a predetermined width (adjustable, but about 5 to 200mm) to have a thickness of about 0.5 to 10mm, In the process of supplying 11), the hole 111 is formed through the perforation device 22 which continuously perforates.

The hole 111, in principle, to perforate the circle, it is possible to perforate in various forms such as square, oval, triangle, pentagon.

The metal plate 11 punched through the hole 111 is helically supplied to the winding device 20 provided with a plurality of rotary rollers 21, which are powered and rotated by the rotating device 24 of the molding apparatus B. And the metal tube 10 is molded while being wound along the connecting line 113 on the outside of the rotary roller 21.

The metal plate 11 is formed by spirally winding so as not to overlap and overlap along the connecting line 13, and at one part is external from the extrusion nozzle 31 installed at the tip of the extruder 30 to the outside of the metal tube 10. Synthetic resin is supplied in the form of a strip is coated to form an outer synthetic resin layer 12 'on the outside of the metal tube (10).

In the inside of the metal tube 10, the internal synthetic resin is supplied in a band form from the auxiliary extrusion nozzle 41 installed at the tip of the auxiliary extruder 40 so that the internal synthetic resin layer 12 is formed inside the metal tube 10. Coated.

An outer shaping roller 33 is provided outside the synthetic resin layer 12 'and an inner shaping roller 43 is provided inside the synthetic resin layer 12 so that the synthetic resin layers 12 and 12' are disposed. Press the connecting portion of the) to form a synthetic resin tube (1) by connecting in a smooth form to make a coating.

At this time, the hole 111 formed in the metal tube 10 is the outer synthetic resin layer 12 'is supplied with the inner synthetic resin layer 12 is connected to each other integrally so that the coated synthetic resin is not easily peeled off.

The said synthetic resin pipe 1 is shape | molded continuously, and it cut | disconnects to desired length through the cutting device which is not shown in figure.

The synthetic resin tube 1 is capable of molding products of various standards through the winding device 20, the width or thickness of the metal plate 10 and the number of holes 111 according to the standard of the synthetic resin tube (1) Since the diameter and diameter are determined, the standard can be variously selected according to the specification or strength.

After molding the synthetic resin tube 1, the single-colored collar 13 is assembled by injection molding 13 independently and cooled before assembling the single-colored collar 13 to one side of the synthetic resin tube 1 to be cooled and shrunk to shrink. It is formed integrally with the synthetic resin tube (1).

The single-collar collar 13 can be molded by injection molding independently, butt-welding, or injection molding the synthetic resin tube 1 into an integrated state in an assembled state in a mold. The outer edge of the lower end of the knitting collar 13 is formed with a flange 131 protruding while being projected to the outside, it is configured to facilitate coupling with other pipes or members. In addition, the upper side is formed with a protruding portion 132 protruding while being surrounded by the inner periphery, the end portion of the synthetic resin tube 1 is positioned and coupled to the upper surface of the protruding portion 132. The single-collar collar 13 is molded in a form combined with the synthetic resin tube 1 to produce the composite tube A of the present invention.

형상의 파형형상으로 형성하여 와인더장치(20)에 나선형으로 공급하면서 접속선(113)이 만나도록 하여

형상의 파형형상 단면인 파형부(112)가 형성되는 금속관(10)을 제조한 것이다. 그리고 외부에서 압출기(30)와 연결된 압출노즐(31)을 통하여 외부의 합성수지를 공급하여 합성수지층(12')을 형성하고, 내부에서 보조 압출기(40)와 연결된 보조 압출 노즐(41)을 통하여 내부 합성수지를 공급하여 내부의 합성수지층(12)을 형성한 것이다. 또한 외부 성형 로울러(34)와 내부 성형 로울러(44)의 누름 작업으로 내부의 합성수지층(12) 및 외부의 합성수지층(12')을 파형형상의 파형부(122)가 형성된다. 즉 금속관(10) 및 합성수지층(12)(12')이 각각 단면 형상이 파형형상인 파형부(112)(122)로 형성되는 합성수지관(1)으로 성형된 것이다. 이때 외부 성형 로울러(34) 및 내부 성형 로울러(44)는 금속관(10)의 파형부(112)의 파형 형태에 따라 파형 형태를 형성한 것으로, 이에 의하여 내부 및 외부의 합성수지층(12)(12')도 종방향 단면이 파형형상인 파형부(122)가 형성된 것이다.
그리고 합성수지관(1)의 한쪽 부분의 끝에는 편수칼라(13)를 연결할 수 있는 것이다. 이러한 편수칼라(13)의 하측 단부 외주연으로는 외부로 둘러지면서 돌출형성되는 플렌지(131)가 형성되어, 다른 배관 또는 부재들과의 결합이 용이하도록 구성되는 것이다. 또한 상측 내부로는 내주연부로 둘러지면서 돌출되는 돌출부(132)가 형성되어, 돌출부(132) 상면으로 합성수지관(1)의 끝단부가 위치되어 결합되어진다. 이러한 편수칼라(13)가 합성수지관(1)과 결합된 형태로 성형되어 본 발명의 복합관(A)이 제조되는 것이다.
특히 합성수지관(1)의 외부 합성수지층(12')은 종방향 단면이 파형형상의 파형부(122)로 형성되기 때문에, 이와 결합되어지는 편수칼라(13)를 사출 등으로 형성하여 편수칼라(13)의 내주면도 파형형상으로 형성하면, 편수칼라(13)와 합성수지관(1)이 견고하게 결합됨을 도 20에서 볼 수 있다.As a second embodiment of the present invention, as shown in Figs. 15 to 20, by forming the metal tube 10 from the metal plate member 11, the metal plate member having a constant width (adjustable, but about 5 to 200mm) 11) is to have a thickness of about 0.5 to 10mm, the hole 111 is formed through the punching device 22 that is continuously punched in the process of supplying the metal sheet material (11).
After forming the holes 111 in the metal plate 11 as described above

Formed in the shape of a wave shape so that the connecting line 113 meets while supplying spirally to the winder device 20

The metal tube 10 in which the wave part 112 which is a wave-shaped cross section of a shape is formed is manufactured. Then, the external synthetic resin is supplied through the extrusion nozzle 31 connected to the extruder 30 from the outside to form the synthetic resin layer 12 ′, and the internal through the auxiliary extrusion nozzle 41 connected to the auxiliary extruder 40 inside. The synthetic resin layer 12 is formed by supplying the synthetic resin. In addition, by pressing the outer forming roller 34 and the inner forming roller 44, the inner corrugated resin layer 12 and the outer synthetic resin layer 12 'are formed with a corrugated wave portion 122. That is, the metal tube 10 and the synthetic resin layers 12 and 12 'are each formed of a synthetic resin tube 1 formed of corrugated portions 112 and 122 having a cross-sectional shape. At this time, the outer shaping roller 34 and the inner shaping roller 44 form a wave shape according to the wave shape of the wave part 112 of the metal tube 10, whereby the inner and outer synthetic resin layers 12 (12) ') Also has a corrugated portion 122 having a longitudinal cross section.
And one end of one portion of the synthetic resin pipe (1) is to connect the single-collar collar (13). The outer edge of the lower end of the single-collar collar 13 is formed with a flange 131 protruding while being formed to surround the outside, it is configured to facilitate coupling with other pipes or members. In addition, the upper side is formed with a protruding portion 132 protruding while being surrounded by the inner periphery, the end portion of the synthetic resin tube 1 is positioned and coupled to the upper surface of the protruding portion 132. The single-collar collar 13 is molded in a form combined with the synthetic resin tube 1 to produce the composite tube A of the present invention.
In particular, since the outer synthetic resin layer 12 ′ of the synthetic resin tube 1 is formed with a corrugated portion 122 having a longitudinal cross section, a single-colored collar 13 to be coupled thereto is formed by injection or the like to form a single-colored collar ( If the inner circumferential surface of 13) is also formed in a wave shape, it can be seen in FIG. 20 that the single collar 13 and the synthetic resin tube 1 are firmly coupled.

21 to 23, the corrugated metal plate 11 is spirally supplied to the winder device 20 to form the corrugated portion 112 having an uneven shape. After the metal pipe 10 is formed, the external synthetic resin is supplied through the extrusion nozzle 31 connected to the extruder 30 from the outside to form an external synthetic resin layer 12 ', and connected to the auxiliary extruder 40 from the inside. The internal synthetic resin is supplied through the auxiliary extrusion nozzle 41 to form the internal synthetic resin layer 12. And while the pressing operation of the outer forming roller 34 and the inner forming roller 45, the outer forming roller 34 is formed to form a wave shape so as to be molded along the shape of the corrugated portion 112 of the uneven metal tube 10 The outer synthetic resin layer 12 'forms a wave shape, and the inner forming roller 45 forms a flat roller surface as in the first embodiment so that the inner synthetic resin layer 12 is flat so that the inner surface is smooth. The synthetic resin tube 1 is provided to be molded. And at the end of one part can be connected to the single collar (13).

Specific embodiments of the present invention having such a configuration will be described in detail.

Example 1

(1) Metal plate supply step

The metal plate 11 having a constant width (adjustable but about 5 to 200 mm) is continuously supplied to have a thickness of about 0.5 to 10 mm.

(2) Metal plate drilling step

In the process of supplying the metal plate 11, the hole 111 is formed through the perforation device 22 which continuously perforates.

The hole 111, in principle, to perforate the circle, it is possible to perforate in various forms such as square, oval, triangle, pentagon.

(3) winding stage

The perforated metal sheet 11 is spirally supplied to the winding device 20 to continuously shape the cylindrical metal tube 10 so that the connecting line 113 meets.

(4) resin coating step

Resin melted in the extruder 30 while the metal tube 10 is formed into a cylindrical shape is supplied in a band form from the extrusion nozzle 31 and spirally supplied to the outside of the metal tube 10, and melted in the auxiliary extruder 40. Is supplied in the form of a strip from the auxiliary extrusion nozzle 41 is spirally supplied to the inside of the metal tube 10, the coating so that the synthetic resin layer (12, 12 ') is formed inside and outside the metal tube (10).

(5) compression molding step

Since the synthetic resin supplied to the inside and the outside is not smoothly coated, the outer synthetic resin layer 12 'of the metal pipe 10 is installed by installing the outer molding roller 33 at the portion where the outer synthetic resin layer 12' overlaps. Arranged to be smooth, the inner resin roller 12 is installed in the overlapping portion of the inner synthetic resin layer 12 by arranging the inner synthetic resin layer 12 of the metal tube 10 to be smooth and coated with a uniform thickness Let (1) be molded.

(6) cutting step

The synthetic resin tube 1 having the synthetic resin layers 12 and 12 'formed inside and outside the metal tube 10 is cut through a cutting device to a predetermined length (6 to 10 m).

(7) Single color connection step

The composite pipe (A) is manufactured by connecting the single knitting collar 13 to one end of the cut synthetic resin tube 1 so as to be integrated or by injection molding.

Example 2

(1) Metal plate supply step

The metal plate 11 having a constant width (adjustable but about 5 to 200 mm) is continuously supplied to have a thickness of about 0.5 to 10 mm.

(2) Metal plate drilling step

In the process of supplying the metal plate 11, the hole 111 is formed through the perforation device 22 which continuously perforates.

The hole 111, in principle, to perforate the circle, it is possible to perforate in various forms such as square, oval, triangle, pentagon.

(3) corrugated metal sheet forming step

The perforated metal sheet 11 is supplied and molded into the metal sheet of the corrugated portion 112 having a corrugated cross section as shown in FIG.

(4) winding stage

The perforated corrugated metal sheet 11 is spirally supplied to the winding device 20, and is continuously formed into a cylindrical metal tube 10 so that the connecting line 113 meets.

(5) resin coating step

When the corrugated metal sheet 11 is formed into a cylindrical metal tube 10, the resin melted in the extruder 30 is supplied in the form of a band from the extrusion nozzle 31 to the outside of the corrugated metal tube 10 having a longitudinal cross section. Spirally supplied to form an external synthetic resin layer (12 '), the resin melted in the auxiliary extruder 40 is supplied in a band form from the auxiliary extrusion nozzle (41) to spirally inside the corrugated metal tube (10) Supplied to form the inner synthetic resin layer 12, so that the synthetic resin tube (1) coated with the synthetic resin is molded.

(6) compression molding step

Since the synthetic resin supplied to the inside and the outside of the metal tube 10 is not coated with a continuous coating surface, the external molding roller 34 is installed at a portion where the external synthetic resin layer 12 'overlaps to form a wave shape. Press-molding so that the outer synthetic resin layer 12 'of the metal tube 10 has a corrugated shape, and the inner molding roller 44 is installed at a portion where the inner synthetic resin layer 12 overlaps to form an inner portion of the corrugated metal tube 10. The synthetic resin layer 12 is pressed to form a waveform so that the coating is made of a uniform thickness.

(6) cutting step

Synthetic resin layers 12 and 12 'are coated on the inside and outside of the corrugated metal tube 10 to form a synthetic resin tube 1 having a corrugated portion 112 and 122 having a corrugated cross section. It cuts through a cutting device at 6-10 m.

(7) Single color connection step

The composite pipe (A) is manufactured by connecting the single knitting collar 13 to one end of the cut synthetic resin tube 1 so as to be integrated or by injection molding.

Example 3

(1) Metal plate supply step

The metal plate 10 having a constant width (adjustable but about 5 to 200 mm) is continuously supplied so as to have a thickness of about 0.5 to 10 mm.

(2) Metal plate drilling step

In the process of supplying the metal sheet 10, the hole 111 is formed through the punching device 22 which is continuously punched.

The hole 111, in principle, to perforate the circle, it is possible to perforate in various forms such as square, oval, triangle, pentagon.

(3) corrugated metal sheet forming step

The perforated metal sheet 10 is supplied and molded into a corrugated metal sheet as shown in FIG.

(4) winding stage

The perforated corrugated metal sheet 11 is spirally supplied to the winding device 20 to continuously shape the cylindrical metal tube 10 so that the connecting line 113 meets.

(5) resin coating step

While the metal tube 10 having the corrugated wave portion 112 is formed into a cylindrical shape, the resin melted in the extruder 30 is supplied in a band form from the extrusion nozzle 31 to form a spiral outside the uneven metal tube 10. The outer synthetic resin layer 12 'is formed, and the resin melted in the sub-extruder 40 is supplied in the form of a strip from the sub-extrusion nozzle 41 and spirally supplied into the uneven metal tube 10. An inner synthetic resin layer 12 is formed to form a synthetic resin tube 1 coated with synthetic resin.

(6) compression molding step

Since the synthetic resin supplied to the inside and the outside of the metal tube 10 is not smoothly coated, an external molding roller 34 having an uneven roller face formed on the portion where the external synthetic resin layer 12 'overlaps is installed. The outer synthetic resin layer 12 ′ of the concave-convex metal tube 10 is arranged so that the corrugated portion 122 of the concave-convex shape is formed, and the inner forming roller having a flat surface is formed on the overlapped portion of the inner synthetic resin layer 12. ) To form a synthetic resin tube 1 by arranging the inside of the uneven metal tube 10 to form a smooth surface, and the outside is coated with a uniform thickness with respect to the metal tube 10, and the inside is Allow the coating to be smooth.

(6) cutting step

The uneven metal tube 10 is coated with a synthetic resin layer 12 (12 ') inside and outside the synthetic resin tube 1 is cut through a cutting device to a predetermined length (6 ~ 10m).

(7) Single color connection step

The composite pipe (A) is manufactured by connecting the single knitting collar 13 to one end of the cut synthetic resin tube 1 so as to be integrated or by injection molding.

The present invention is to form a cylindrical metal tube and a synthetic resin tube having a corrugated cross-section by supplying a thin strip-shaped metal sheet continuously and punched and then spirally supplied to the winding device. And a composite pipe is manufactured by combining a single collar with a synthetic resin pipe.

The present invention is to coat the inside and outside of the corrugated metal tube with a molten resin supplied from an extruder to form a composite tube coated with a uniform thickness on the entire surface of the metal tube.

In the present invention, since the metal plate is perforated, the molten resin supplied from the inside and the outside penetrates each other, and the inside and the outside are integrally formed to prevent separation of the molten resin and the metal tube and maintain a stable and stable coating state for a long time. To make it possible.

According to the present invention, the metal plate is bent to supply a cross-sectional corrugated shape to form a corrugated metal tube, and the composite tube having a higher strength can be formed, and a composite tube having a smooth inside can be supplied as needed to facilitate the flow of water. To do that.

Claims (7)

delete In the composite tube (A) in which the single-collar collar (13) is coupled to the synthetic resin tube (1) in which the synthetic resin layers (12, 12 ') are formed inside and outside the cylindrical metal tube (10), The metal tube 10 is formed by winding a strip-shaped metal plate member 11 in the form of a spiral, The metal plate 11 is formed with a plurality of holes 111 and the cross section

The curved portion 112 is bent to form a shape, and the synthetic resin layers 12 and 12 ′ formed inside and outside the metal tube 10 also have a corrugated portion according to the bent shape of the metal plate 11. 122) is formed, The single-collar collar 13 is integrally coupled to one end of the composite pipe A, and a flange 131 is formed at an outer periphery of the end of the single-collar collar 13, and a protrusion 132 is formed at the central inner circumferential portion. Protruding is formed, the composite pipe using a metal plate material, characterized in that the one side end of the synthetic resin tube (1) to be coupled to the protrusion 132 is coupled to each other. delete A metal plate supply step (S01) in which a metal plate member 11 having a width and a thickness is continuously supplied; Metal plate drilling step (S02) to form a plurality of holes (111) through the punching device 22 to be continuously punched in the process of supplying the metal sheet material (11); The perforated metal plate 11 has a cross section

A winding step (S03) of forming a metal tube 10 having a cylindrical shape by being spirally supplied to the winding device 20 after being formed of a metal plate bent into a wavy shape of a shape; The molten resin with respect to the metal tube 10 of the cylindrical shape in the form of a band from the extrusion nozzle 31 of the extruder 30 in a spiral shape to the outside of the metal tube 10, the molten resin is supplied to the auxiliary extruder 40 Synthetic resin coating step (S04) of coating a synthetic resin on the inner circumferential surface and the outer circumferential surface of the metal tube 10 by spirally feeding the inside of the metal tube 10 in the form of a strip from the auxiliary extrusion nozzle 41; In the manufacturing method of a composite tube using a metal plate material comprising a cutting step (S06) to cut to a certain length in a state coated with a synthetic resin layer 12 (12 ') on the inside and outside of the metal tube 10, After the synthetic resin coating step (S04), the overlapping portion of the synthetic resin layer 12 ′ coated on the outside of the metal tube 10 is press-molded by an external forming roller 34, and the inside of the metal tube 10 The overlapping portion of the synthetic resin layer 12 coated on the surface is press-molded into a wave shape by the internal forming roller 44 so that the internal and external synthetic resin layers 12, 12 'are formed with a corrugated portion 122. Further comprising a compression molding step (S05) the coating is made to a uniform thickness, The winding step (S03) receives the corrugated metal plate 11 in a spiral form to the outside of the plurality of rotary rollers 21 installed in the winding device 20 so that the corrugated metal tube 10 is formed. , The pressing molding step (S05) is the synthetic resin layer 12, 12 is coated on the metal tube 10 by an internal forming roller 44 and an external forming roller 34 installed inside and outside the metal tube 10. ') The connecting portion of the pressing is arranged to make the coating, the outer synthetic resin layer (12') is coated in a wave shape by the outer forming roller 34 formed a wave shape roller surface, the inside of the Synthetic resin layer (12) is a composite pipe manufacturing method using a metal plate material, characterized in that the coating is provided in a corrugated shape by the inner forming roller (44) having a corrugated roller surface. delete delete delete

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