JP3577220B2 - Manufacturing method of tube with internal spiral guideway - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a method for manufacturing a pipe with an internal spiral guideway suitable for use in a natural sewer vertical sewer pipe.
[0002]
[Prior art]
In order to attenuate the sewage flowing into the manhole when the sewage flows into the manhole, for example, as described in Japanese Utility Model Laid-Open No. 4-53842, a vertical sewage pipe (drop shaft) is provided in the manhole. A placement method has been implemented. As the vertical sewage pipe, a pipe with a helical guide path provided with a helical guide path for guiding sewage to flow downward in a helical state is used inside a vertically arranged straight tubular pipe main body. . In addition, an air core tube is provided at the shaft core of the spiral guide path in order to eliminate upwardly the air contained in the sewage guided by the spiral guide path.
[0003]
The inner surface helical guideway with tube such as this, the sewage flowing into the upper end thereof, is attenuated while flowing down along the spiral guide path. Therefore, there is no possibility that the bottom of the manhole is subjected to a strong impact due to the sewage flowing down, and wear of the bottom of the manhole is suppressed.
[0004]
A spiral guideway for guiding sewage flowing into the vertical pipe main body in a spiral shape is manufactured by separately manufacturing the vertical pipe main body and the spiral guideway as described in Japanese Patent Application Laid-Open No. 8-41915. Then, a spiral guideway is inserted into the vertical pipe main body, and the outer peripheral edge of the spiral guideway is joined to the inner peripheral surface of the vertical pipe main body. The pitch number of the spiral guide path arranged in the vertical pipe main body increases in proportion to the flow length of the sewage. However, as the pitch number of the spiral guide path increases, manufacturing becomes more difficult.
[0005]
When the spiral guide path is continuously formed and manufactured, when the spiral guide path is continuously manufactured, the spiral guide path can be relatively easily manufactured even if the number of pitches of the spiral guide path increases. However, in the case of performing batch molding for each predetermined length , a large molding die is required, so that large equipment is required, and the economic efficiency is impaired.
[0006]
The present invention solves such a conventional problem, does not require a large capital investment, and can easily manufacture a tube with an internal spiral guideway having a spiral guideway with a large number of pitches, and an external surface. It is an object of the present invention to provide a method for manufacturing a tube with an internal spiral guideway, which can provide a tube with an internal spiral guideway having no irregularities and an excellent appearance.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 of the present application (Invention 1) forms a plurality of short pipes with internal spiral guide paths having spiral guide paths on the inner surface, and the spiral guide paths form one continuous spiral guide path. So that the short pipe bodies are joined to each other so that the short pipe main bodies are joined to each other via an adhesive, and a resin layer for covering the short pipes with internal spiral guide paths is provided. A method for manufacturing a tube with an inner spiral guide path, characterized in that the pipe is fixed in a fixed manner.
[0008]
The invention according to claim 2 of the present application (the present invention 2) provides a plurality of short pipes with an internal spiral guide path provided with a spiral guide path on the inner surface, and a single continuous spiral guide path in an already-made resin pipe. The short pipe main bodies are sequentially connected to form a spiral guide path, and the short pipe bodies are joined and disposed so as to abut each other via an adhesive, with the joint surfaces of the short pipe bodies being inclined surfaces. A method for manufacturing a tube with an internal spiral guide path, wherein a resin layer filling a gap between the tube and the resin tube is provided and integrally fixed.
[0009]
The invention according to claim 3 of the present application (invention 3) is characterized in that the resin layer of the invention 1 has a curable resin or a filler added thereto, a thermoplastic resin, or a particle-reinforced plastic, or a method for producing a foam inner surface threaded旋案the path with tube, characterized in that it consists either.
[0010]
The invention according to claim 4 of the present application (Invention 4) is that the short tube with an internal spiral guideway of Invention 2 is made of a resin whose main material is polyolefin, and the resin layer is made of a norbornene-based monomer and a metathesis catalyst. A method for manufacturing a tube with an internal spiral guide path, comprising a resin layer formed by molding a reaction injection molding material as a main material.
[0011]
In the present invention 1 or 2 , as the material forming the short pipe with the inner spiral guide path, rigid polyvinyl chloride, methacrylic resin, thermoplastic resin such as polyethylene, polypropylene, unsaturated polyester resin, vinyl ester resin, epoxy Thermosetting resins such as resin, polyurethane, dicyclopentadiene, etc., and fiber-reinforced resins and particle-reinforced plastics (resin concrete) reinforced with inorganic fibers such as glass fibers, organic fibers such as carbon fibers, aramid fibers, and vinylon fibers. ) And the like.
[0012]
The present invention 3 is obtained by limiting the resin used in the present invention 1, the resin for forming the resin layer that is used, adhesion of the polyurethane, the material forming the inner surface helical guideway with short pipe sex and adhesion good, but the rate of relatively cured is preferably used since the fast Besides, a thermosetting resin or a suitable glass flakes in their such as epoxy resin or unsaturated polyester Can be used, and thermoplastic resins such as polyvinyl chloride and polyolefin and particle-reinforced plastics (resin concrete) can also be used. When polyurethane is used as the resin for forming the resin layer, a resin having a foaming ratio of about 0.2 to 10 times of the formed resin layer is preferably used.
[0013]
The present invention 4 is obtained by limiting the resin used in the present invention 2, the resin for forming the resin layer that is used, the material forming the inner surface helical guideway with short pipe and a main material a polyolefin When the resin is made of a reaction injection molding material mainly composed of a norbornene-based monomer such as dicyclopentadiene and a metathesis catalyst, the resin (hereinafter, referred to as “diene”) has good adhesion and adhesion to the resin. "Cyclopentadiene-based resin") is preferably used. Examples of the resin mainly composed of polyolefin as a material for forming the short tube with the inner spiral guide path include polyethylene, polypropylene, and a resin mainly composed of these.
[0014]
[Action]
The method of manufacturing a tube with an internal spiral guideway according to the first aspect of the present invention includes the steps of: forming a plurality of short tubes with an internal spiral guideway provided with a spiral guideway so that the spiral guideways form one continuous spiral guideway. The short pipes are connected in order, and the short pipes are joined together so that the short pipes have an inclined surface, and are joined together with an adhesive so that the short pipes with the internal spiral guide paths are provided. By doing so, a plurality of short pipes with internal spiral guide paths are separately produced in large quantities with simple equipment, and only a necessary length is used to form one continuous spiral guide path. It can be connected sequentially and fixed with a simple resin fixing method, so there is no need for huge capital investment as in the past, and pipes with internal spiral guideways with spiral guideways with a large number of pitches can be easily manufactured. Can be obtained inner spiral guide The pipe with the inner surface is excellent in strength because the resin layer is present on the outer layer of the pipe with the internal spiral guide path, and has a good appearance because there is no unevenness on the surface. Mounting with a support such as a U-band or the like.
[0015]
The method for manufacturing a tube with an internal spiral guide path according to the second aspect of the present invention is a method of manufacturing a plurality of short pipes with an internal spiral guide path provided with a spiral guide path on the inner surface, and forming one continuous spiral guide path in a pre-made resin pipe. The short pipes are connected sequentially so as to form a spiral guide path, and are arranged so that the joint surfaces of the short pipe main bodies are inclined surfaces and are joined so as to abut each other via an adhesive. By providing a resin layer that fills the gap with the resin pipe and integrally fixing the same, a plurality of short pipes with internal spiral guide paths are separately mass-produced with simple equipment, and the required length is obtained. By using only the amount, it can be sequentially connected so as to form one continuous spiral guideway and can be fixed with a simple resin fixing method, so that it does not require a huge capital investment like the conventional Tube with internal spiral guideway having a large number of spiral guideways Can be easily manufactured, the inner surface helical guideway with tube obtained is excellent in strength since the outer layer of the inner surface helical guideway with short pipes through the resin layer is present resin pipe, also, uneven surface As a result, the appearance is good, and it is easy to attach to the wall inside the human hole by using a commercially available support such as a U bolt or a U band.
[0016]
In the method for producing a tube with an inner spiral guide path according to the third aspect of the present invention, the resin layer according to the first aspect of the present invention may be configured such that the resin layer is a curable resin, or a filler added thereto, a thermoplastic resin, or a particle-reinforced plastic, or a mixture thereof. By using any one of the foams , dew condensation can be prevented, and a pipe with an inner spiral guideway having excellent sound absorbing performance of sewage sound of the pipe wall can be obtained.
[0017]
In the method for producing a tube with an internal spiral guideway according to a fourth aspect of the present invention, the short tube with an internal spiral guideway according to the second aspect of the present invention is made of a resin whose main material is polyolefin, and the resin layer mainly comprises a norbornene-based monomer and a metathesis catalyst. By using a resin layer molded from a material for reaction injection molding as a material, even if a short tube with an internal spiral guideway made of a resin whose main material is a flexible material such as polyolefin is used, the connecting parts of these tubes are formed by norbornene. Since it can be fixed in a water-tight state with a resin layer molded of a reaction injection molding material mainly composed of a system monomer and a metathesis catalyst, it has excellent durability and impact resistance to acids and alkalis, In addition, it is possible to obtain a pipe with an internal spiral guide path without sewage leakage.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a partial sectional view showing an example of a short pipe with an internal spiral guideway used in the present invention 1 or 2 . As shown in FIG. 1, the short pipe 11 with the internal spiral guide path has a receiving port 112 in which an annular packing 115 is attached at one end of a short pipe main body 111, and an insertion port 113 at the other end. A spiral guide path 114 is provided for one pitch inside the short tube main body 111, and a core cylinder 115 is provided inside the spiral guide path 114. The end surface 113a of the insertion opening 113 is formed as an inclined surface whose diameter gradually decreases toward the edge. An inclined surface 112a corresponding to the inclined surface formed on the end surface 113a of the insertion opening 113 is formed at the back of the receptacle 112.
[0019]
FIG. 2 is a partial cross-sectional view showing another example of a short pipe with an internal spiral guideway used in the present invention 1 or 2 . As shown in FIG. 2, the short pipe 12 with the internal spiral guide path has joining surfaces 122 and 123 formed at both ends of the short pipe main body 121, and a spiral guide path 124 for one pitch is provided inside the short pipe main body 121. The core tube 125 is provided inside the spiral guide path 124. One joining surface 122 is formed as an inclined surface whose diameter gradually increases toward the edge, and the other joining surface 123 is formed as an inclined surface whose diameter gradually decreases as approaching the edge. The short pipe main body 121 has the same outer diameter and thickness as the short pipe main body 111 of the short pipe 11 with the inner spiral guide path shown in FIG.
[0020]
Next, an example of the method for manufacturing the tube with the internal spiral guideway of the present invention 1 using the short pipe with the internal spiral guideway 11 shown in FIG. 1 and the short pipe 12 with the internal spiral guideway shown in FIG. This will be described with reference to FIG. First, as shown in FIG. 3 (a), 'and, each spiral guideway 114,124,124' inner surface helical guideway with short tube 11 and the inner surface helical guideway with short pipes 12, 12 so as to continuously Connect and join with adhesive. At this time, one joining surface (inclined surface) 122 of one short tube 12 with internal spiral guide passage is attached to the end surface (inclined surface) 113a of the insertion opening 113 of the short tube 11 with internal spiral guide passage via an adhesive. And is joined to the other joining surface (inclined surface) 123 via an adhesive by bonding one joining surface (inclined surface) 122 'of the other short tube 12' with an inner spiral guide path. It is preferable that the abutting end surfaces and the respective joining surfaces be inclined surfaces, because it facilitates the positioning and increases the bonding area.
[0021]
Next, as shown in FIG. 3 (b), the end face of the receiving port 112 of the short pipe 11 with the internal spiral guide path and the end face of the core tube 125 'of the other short pipe 12' with the internal spiral guide path, The temporary fixing flanges 13 are brought into contact with each other, and the two are fastened by the temporary fixing tool 14 to temporarily fix them.
[0022]
Next, as shown in FIG. 3 (c), on the outside of the temporarily fixed inner surface helical guideway with short tube 11 and the inner surface helical guideway with short pipe 12, 12 ', the gap 16 a cylindrical outer frame 15 It is covered as if provided. At this time, one end of the outer frame 15 is brought into contact with the outside of the receiving port 112 of the short pipe 11 having the internal spiral guide path, and the other end is connected to the short pipe main body of the other short pipe 12 'with the internal spiral guide path. The cover 17 is put over the cover 121 '.
[0023]
Thereafter, in the gap 16, from the inlet 151 provided in the outer casing 15, injecting a foaming resin solution, and held for a predetermined time, the inner surface helical guideway with short tube 11 and the inner surface helical guideway with short pipe 12 , 12 'are integrally provided with a resin layer made of a resin foam. Finally, the lid 17, the outer frame 15, the temporary fixing bolts 14, and the temporary fixing flanges 13, 13 are removed to obtain a tube 10 with an internal spiral guide path as shown in FIG. 4.
[0024]
As shown in FIG. 4, the inner surface helical guideway with tube 10, the inner surface helical guideway with short tube 11 and the inner surface helical guideway with short pipes 12, 12 'and but its spiral guideways 114,124,124' Are sequentially connected so as to form one continuous spiral guide path, and a foamed resin layer 18 for covering the short tubes # 11, 12, 12 'with their internal spiral guide paths is provided and fixed integrally, One end has a receiving port 10A and the other end has an insertion port 10B.
[0025]
Tip of the spigot 10B, as shown in FIG. 5 (a), overlies the 'other bonding surface 123 of the end of the' other of the inner surface helical guideway with short tube 12, so as to have an inclined surface 181 on the end face Is provided with a resin layer 18. Note that, as shown in FIG. 5D, the end surface of the resin layer 18 may be a vertical surface. As shown in FIG. 5 (b), a resin layer 18 is provided only on the side of the other end of the other short tube 12 'with an internal spiral guide path so as not to cover the joining surface 123'. Is also good. As shown in FIG. 5 (c), the resin layer 18 may be mounted in a concave portion provided on the outer surface of the other end of the other short pipe 12 ′ with the internal spiral guide path.
[0026]
Bonding surface between one of the inner surface helical guideway with short tube 12 and the other inner surface helical guideway with short pipe 12 'is an inclined surface (see FIGS. 1 and 2) without, to projection fitting (FIG. 6), or a method of forming a vertical surface and fixing it outside with a band 19 (see FIG. 7) .
[0027]
Further, as shown in FIG. 8, a recess such as to span the junction surface of the one of the inner surface helical guideway with short tube 12 and the other inner surface helical guideway with short pipe 12 'is formed, foamed resin layer in the recess Each joint surface may be connected to a similar structure by providing 18.
[0028]
Next, another example of the method of manufacturing the tube with the internal spiral guideway of the present invention 2 using the short pipe with the internal spiral guideway 11 shown in FIG. 1 and the short pipe 12 with the internal spiral guideway shown in FIG. Will be described with reference to FIG.
First, an inner surface helical guideway with short tube 11 and the inner surface helical guideway with short pipe 12, 12 ', in the same manner as described with reference to FIG. 3 (a), each spiral guideway 114,124,124 ′ Are connected so as to be continuous and joined with an adhesive, and as shown in FIG. 9, these are disposed in a ready-made resin pipe 21 and the short pipes 11, 12, 12 ′ with internal spiral guide paths are provided. A foaming resin liquid is filled in a gap between the resin and the resin pipe 21 to form a foamed resin layer 11, and the space therebetween is integrally fixed to obtain a pipe 20 with an internal spiral guide path.
[0029]
As shown in FIG. 9, in the pipe 20 with the internal spiral guide path, the short pipe 11 with the internal spiral guide path and the short pipes 12 and 12 ′ with the internal spiral guide path have the spiral guide paths 114, 124 and 124 ′. Are arranged in the resin pipe 21 in a state of being sequentially connected so as to form one continuous spiral guide path, and the short pipes # 11, 12, 12 'with the internal spiral guide path, the resin pipe 21 and Is provided and fixed integrally, and has a receiving port 20A at one end and an insertion port 20B at the other end.
[0030]
Next, still another example of the method for manufacturing a tube with an internal spiral guideway of the present invention 1 using only the short pipe with an internal spiral guideway shown in FIG. 2 will be described with reference to FIG. 10. First, the short pipes 12, 12 ′, and 12 ″ with the internal spiral guide paths are connected so that the spiral guide paths 124, 124 ′, and 124 ″ are continuous and joined with an adhesive, and FIG. According to the method described with reference to (b) and (c), a resin layer 31 made of a resin foam is provided for integrally covering the short pipes 12, 12 ', and 12''with internal spiral guide paths. Thereafter, the receiving collar tube 32 is fitted into one end of one of the short pipes with the internal spiral guide path via the packing 33 to form the receiving port 30A with the seal packing 34 attached to the inner peripheral surface. I do.
[0031]
As shown in FIG. 10, in the tube 30 with the internal spiral guide path, the short pipes 12, 12 ', 12 "with the internal spiral guide path have one spiral guide path 124, 124', 124". The continuous spiral guide paths are sequentially connected so as to form them, and a foamed resin layer 31 for covering the short tubes # 12, 12 ', 12''with the internal spiral guide paths is provided and fixed integrally, and one end is provided. The portion has a receiving port 30A and the other end has an insertion port 30B.
[0032]
【Example】
Hereinafter, the present invention will be described with reference to examples.
Example 1
Injection molding is performed by using hard polyvinyl chloride, and has a receiving port 112 at one end and an insertion port 113 at the other end of a short tube main body 111 having a length of 160 mm and a thickness of 3.0 mm having a structure shown in FIG. A spiral guideway 114 having an outer diameter of 250 mm, an inner diameter of 90 mm, and a thickness of 6.0 mm for one pitch is provided inside the short pipe main body 111, and an outer diameter of 90 mm and a thickness of 3.0 mm is provided inside the spiral guideway 114. The short tube 11 with the inner spiral guide path having the core tube 115 was obtained.
[0033]
Injection molding is performed by using hard polyvinyl chloride and having a structure shown in FIG. 2 and having an outer diameter of 250 mm, an inner diameter of 90 mm, and a thickness of 6.0 mm inside a short tube main body 121 having a length of 160 mm and a thickness of 3.0 mm. The short pipe 12 with the inner spiral guide path having the spiral guide path 124 for one pitch and having the core tube 125 with an outer diameter of 90 mm and a wall thickness of 3.0 mm inside the spiral guide path 114 was obtained.
[0034]
Using the short pipes 11 and 12 with the inner spiral guide paths, the polyurethane resin liquid is injected from the injection port 151 provided in the outer frame 15 by the process described with reference to FIG. , the inner surface helical guideway with short tube 11 and the inner surface helical guideway with short pipes 12, 12 'and but its spiral guideways 114,124,124' sequentially linked so as to mold the helical guideway one continuous A foamed resin layer 18 made of polyurethane having a thickness of 5 mm for covering the short pipes # 11, 12, 12 'with internal spiral guide paths is provided and fixed integrally, and has a receiving port 10A at one end. Then, a tube 10 with an internal spiral guide path having an insertion opening 10B at the other end was obtained. The obtained tube 10 with an inner spiral guide path had no irregularities on the outer surface and had a good appearance.
[0035]
Example 2
As the short pipes 11 and 12 with the internal spiral guide paths, those made of polypropylene are used, and they are interposed via a sealant ("Eslon Mastite" manufactured by Sekisui Chemical Co., Ltd.) by the process described with reference to FIG. ligated, as a material to be injected from the injection port 151 provided in the outer frame 15, by injecting a reaction injection molding material composed primarily of dicyclopentadiene metathesis catalyst, as shown in FIG. 4, the inner surface helical guideway The short pipe 11 and the short pipes 12 and 12 'with internal spiral guide paths are sequentially connected so that the spiral guide paths 114, 124 and 124' form one continuous spiral guide path. A resin layer 18 made of a dicyclopentadiene-based resin having a thickness of 5 mm and covering the short pipes # 11, 12, 12 'with a guide path is provided and fixed integrally, and has a receiving port 10A at one end, To give an inner helical guideway with tube 10 having a spigot 10B on the end.
[0036]
Example 3
Using the above inner surface helical guideway with short tube 11, as shown in FIG. 9, the inner surface helical guideway with short tube 11 and the inner surface helical guideway with short pipes 12, 12 ', but its spiral guideways The short pipes # 11, # 11, # 12, # 11, # 12, # 11, # 12, # 11, # 12, # 11, # 12, # 11, # 12, # 11 are arranged in the rigid vinyl chloride resin pipe 21 in a state where they are sequentially connected so as to form one continuous spiral guide path. , 12, 12 'and a foamed resin layer 22 filling the gap between the resin tube 21 are provided and fixed integrally, and have an inner surface spiral having a receiving port 20A at one end and an insertion port 20B at the other end. A pipe 20 with a guideway was obtained. The obtained tube 20 with an inner spiral guide path had no irregularities on the outer surface and had a good appearance.
[0037]
Example 4
As shown in FIG. 10, the short pipes 12, 12 ′, and 12 ″ with the internal spiral guide paths are connected to the short pipes 12, 12 ′, and 12 ″ with the internal spiral guide paths 124, 124 ′, and 124 ′. ′ Are sequentially connected so as to form one continuous spiral guide path, and a foamed resin layer 31 for covering the short tubes {12, 12 ′, 12 ″ with their internal spiral guide paths is provided and integrally formed. A tube 30 with an inner spiral guide path was fixed, having a receiving port 30A at one end and an insertion port 30B at the other end. The obtained tube 30 with an inner spiral guide path had a good appearance without irregularities on the outer surface.
[0038]
【The invention's effect】
Since the method for manufacturing a tube with an internal spiral guideway of the present invention is as described above, it does not require a huge capital investment as in the prior art, and has an internal spiral guideway having a spiral guideway with a large number of pitches. can be produced the tube easy, the inner surface helical guideway with tube obtained is excellent in strength because the resin layer is present in the outer layer of the inner surface helical guideway with short pipe, a good appearance because irregularities on the surface does not occur It is easy to attach to a wall inside a human hole with a support such as a commercially available U bolt or U band.
[0039]
When the resin layer is made of a resin foam layer, the obtained tube with an inner spiral guide path can prevent dew condensation, and has excellent sound absorbing performance of sewage sound of the tube wall.
[0040]
When the short tube with an internal spiral guideway is made of a resin mainly composed of polyolefin, and the resin layer is made of a resin layer molded of a reaction injection molding material mainly composed of a norbornene-based monomer and a metathesis catalyst, the inner surface obtained is The pipe with a spiral guideway is excellent in durability and impact resistance to acids and alkalis, and has no risk of sewage leakage.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view showing an example of a short pipe with an internal spiral guideway used in the present invention 1 or 2 .
FIG. 2 is a partial cross-sectional view showing another example of a short pipe with an internal spiral guideway used in the present invention 1 or 2 .
3 is a diagram illustrating an example of a method for manufacturing a tube with an internal spiral guideway of the present invention 1 using the short tube with an internal spiral guideway shown in FIG. 1 and the short tube with an internal spiral guideway shown in FIG. 2; FIG. 3A is a cross-sectional view illustrating a first step, FIG. 3B is a partial cross-sectional view illustrating a second step, and FIG. 3C is a partial cross-sectional view illustrating a third step. .
FIG. 4 is a cross-sectional view showing an example of a tube with an internal spiral guideway obtained according to the present invention 1 .
FIGS. 5A and 5B are explanatory views illustrating the structure of an opening of a tube with an internal spiral guideway obtained according to the first aspect of the present invention, wherein FIG. FIG. 7C is a cross-sectional view showing still another example, and FIG. 7D is a cross-sectional view showing still another example.
FIG. 6 is a cross-sectional view illustrating an example of a joined state of a short pipe with an inner spiral guide path.
FIG. 7 is a cross-sectional view illustrating another example of the joined state of the short tubes with the internal spiral guide paths.
FIG. 8 is a cross-sectional view illustrating still another example of the joined state of the short tubes with the internal spiral guide paths.
FIG. 9 illustrates another example of the method of manufacturing a tube with an internal spiral guideway of the present invention 2 using the short tube with an internal spiral guideway shown in FIG. 1 and the short tube with an internal spiral guideway shown in FIG. FIG.
10 is a cross-sectional view illustrating still another example of the method for manufacturing a tube with an internal spiral guideway of the present invention 1 using the short pipe with an internal spiral guideway shown in FIG. 2;
[Explanation of symbols]
11, 12, 12 'Short pipes 18, 22, 31 with internal spiral guide paths Resin layers 20, 30, 40 Pipes 21 with internal spiral guide paths Resin pipe 32 Color pipes 111, 121, 121' Short pipe main bodies 114, 124, 124 'spiral guideway 115, 125, 125' core tube 112, 20A, 30A socket 113, 20B, 30B insertion

Claims (4)

A plurality of short pipes with an internal spiral guide path provided with a spiral guide path on the inner surface are sequentially connected so that the spiral guide paths form one continuous spiral guide path, and the joining surfaces of the short pipe main bodies are joined together. As an inclined surface, a pipe with an internal spiral guide path is characterized in that it is joined so as to abut via an adhesive, and a resin layer for covering the short pipe with the internal spiral guide path is provided and integrally fixed. Production method. A plurality of short pipes with an internal spiral guide path provided with a spiral guide path on the inner surface are sequentially connected in a ready-made resin pipe such that the spiral guide paths form one continuous spiral guide path. With the joining surfaces of the main bodies as inclined surfaces , they are joined and arranged so as to abut each other via an adhesive, and a resin layer is provided to fill a gap between the short tubes with their internal spiral guide paths and the resin tubes. A method for manufacturing a tube with an inner spiral guide path, wherein the tube is integrally fixed. The inner spiral according to claim 1, wherein the resin layer according to claim 1 is formed of a curable resin, a filler to which a curable resin is added, a thermoplastic resin, or a particle-reinforced plastic, or a foam thereof. Manufacturing method of pipe with guideway. The short pipe with an internal spiral guideway according to claim 2 is made of a resin mainly composed of polyolefin, and the resin layer is made of a resin layer formed of a reaction injection molding material mainly composed of a norbornene-based monomer and a metathesis catalyst. A method for producing a tube with an internal spiral guide path, comprising:

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