JPH037147Y2 - - Google Patents

Info

Publication number
JPH037147Y2
JPH037147Y2 JP8767985U JP8767985U JPH037147Y2 JP H037147 Y2 JPH037147 Y2 JP H037147Y2 JP 8767985 U JP8767985 U JP 8767985U JP 8767985 U JP8767985 U JP 8767985U JP H037147 Y2 JPH037147 Y2 JP H037147Y2
Authority
JP
Japan
Prior art keywords
band
pipe
divided
socket
resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP8767985U
Other languages
Japanese (ja)
Other versions
JPS61201827U (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP8767985U priority Critical patent/JPH037147Y2/ja
Publication of JPS61201827U publication Critical patent/JPS61201827U/ja
Application granted granted Critical
Publication of JPH037147Y2 publication Critical patent/JPH037147Y2/ja
Expired legal-status Critical Current

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  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Moulding By Coating Moulds (AREA)

Description

【考案の詳細な説明】 産業上の利用分野 本考案は樹脂管製造用芯金に関する。[Detailed explanation of the idea] Industrial applications The present invention relates to a core metal for manufacturing resin pipes.

従来の技術 既設管やシールド等の敷設通路内に下水用等の
低水圧用FRP管を敷設する場合に、従来はスリ
ツプオン形式の受口部分を有する管をそのまま敷
設通路内に挿入し、運搬、接合していた。
Conventional technology When installing low-water pressure FRP pipes for sewage or other purposes in a passage for installing existing pipes or shields, conventionally the pipe with a slip-on type socket was inserted into the passage as is, transported, It was connected.

考案が解決しようとする問題点 ところが上記従来のものでは、管を敷設通路内
で運搬する時に、受口部外径が直管部外径に比べ
て5〜7%大きいため、それだけ大きな敷設通路
内径が必要になるという問題点があつた。この問
題点を解決するためには、長さ方向にわたつて周
方向ひとつ割りに構成された管を弾性変形により
縮径させて敷設通路内を運搬するのが有利である
が、分割部の接合構造や管継手部の接合構造を新
規に検討しなければならなくなるという問題点が
新たに生じる。
Problems to be Solved by the Invention However, with the above-mentioned conventional method, when the pipe is transported through the installation passage, the outside diameter of the socket part is 5 to 7% larger than the outside diameter of the straight pipe part, so the installation passage is correspondingly larger. There was a problem that an inner diameter was required. In order to solve this problem, it is advantageous to reduce the diameter of a tube that is divided into pieces in the circumferential direction over the length direction by elastic deformation and then transport the pipe through the installation path. A new problem arises in that the structure and joint structure of the pipe joint must be newly considered.

そこで本考案はこのような問題点を解決し、分
割部や管継手部の良好な接合構造を得ることがで
きる樹脂管製造用芯金を得ることを目的とする。
SUMMARY OF THE INVENTION The object of the present invention is to solve these problems and to provide a core metal for manufacturing resin pipes that can provide a good joining structure for divided parts and pipe joint parts.

問題点を解決するための手段 上記問題点を解決するため本考案は、円柱状の
芯金本体の外面に、軸心方向の第1の帯状突部
と、周方向の第2の帯状突部とを形成したもので
ある。
Means for Solving the Problems In order to solve the above problems, the present invention provides a first band-like protrusion in the axial direction and a second band-like protrusion in the circumferential direction on the outer surface of the cylindrical core body. It was formed by

作 用 このような構成であると、芯金本体に樹脂含浸
繊維を巻付けて硬化させ、その後これを前記芯金
本体から脱型させることにより樹脂管が得られ
る。この樹脂管は、第1および第2の帯状突部に
対応した部分が半径方向外側に突出しており、第
2の帯状突部に対応した部分は管継手部の受口と
して利用することができる。また、第1の帯状突
部に対応した突出部は、この突出部を形成する一
方の立上り部を軸心方向にわたつて切断すること
により、受挿構造を有した軸心方向の分割部とし
て利用できる。したがつて、本考案によれば、十
分に機能する接合構造を有して、長さ方向にわた
り周方向ひとつ割りに構成された樹脂管を得るこ
とができる。このため管を弾性変形により縮径さ
せて敷設通路内を運搬できることになり、この敷
設通路の内径を小さなものとすることができる。
Function With such a configuration, a resin pipe can be obtained by winding the resin-impregnated fiber around the core body and curing it, and then removing it from the core body. In this resin pipe, portions corresponding to the first and second band-shaped protrusions protrude outward in the radial direction, and the portions corresponding to the second band-shaped protrusions can be used as a socket for the pipe joint. . In addition, the protrusion corresponding to the first band-shaped protrusion can be formed as a divided part in the axial direction having a receiving structure by cutting one rising part forming the protrusion in the axial direction. Available. Therefore, according to the present invention, it is possible to obtain a resin pipe that has a sufficiently functional joining structure and is divided into pieces in the circumferential direction over the length direction. Therefore, the diameter of the tube can be reduced by elastic deformation and the pipe can be transported inside the laying passage, and the inner diameter of this laying passage can be made small.

実施例 以下、本考案の一実施例を図面にもとづいて説
明する。第1図a,bおよび第2図において、1
は円柱状の芯金本体であり、この芯金本体1の外
面には、軸心方向の第1の帯状突部3と、周方向
の第2の帯状突部4a,4bとが形成されてい
る。これら帯状突部3,4a,4bは、ゴム板や
木材にて形成するのが好適である。第2の帯状突
部4aは芯金本体1の両端部に形成され、また他
の第2の帯状突部4bは芯金本体1の中央部に幅
広に形成されている。なお、帯状突部3,4a,
4bの高さは、成形すべき樹脂管の肉厚に一致さ
せてある。
Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings. In Figure 1 a, b and Figure 2, 1
is a cylindrical core body, and the outer surface of this core body 1 is formed with a first band-shaped protrusion 3 in the axial direction and second band-shaped protrusions 4a, 4b in the circumferential direction. There is. These band-like protrusions 3, 4a, 4b are preferably formed of rubber plates or wood. The second band-shaped protrusions 4a are formed at both ends of the core body 1, and the other second band-shaped protrusions 4b are formed wide at the center of the core body 1. Note that the band-like protrusions 3, 4a,
The height of 4b is made to match the wall thickness of the resin pipe to be molded.

このような芯金本体1に樹脂含浸繊維5と巻付
けて硬化させ、その後これを脱型させると、帯状
突部3,4a,4bに対応した突出部を有した樹
脂管が得られる。なお、第1図aは、長さの両
受構造の樹脂管を2個取りできるように帯状突部
4a,4bを形成したものを例示したが、この帯
状突部の配置は、成形しようとする樹脂管の形
状、寸法等や脱型作業の観点等にもとづいて、任
意のものとすることができる。
When the resin-impregnated fiber 5 is wound around such a core body 1 and cured, and then this is removed from the mold, a resin tube having protrusions corresponding to the band-shaped protrusions 3, 4a, and 4b is obtained. Although Fig. 1a shows an example in which band-like protrusions 4a and 4b are formed so that two resin pipes with a length-receiving structure can be taken, the arrangement of the band-like protrusions may vary depending on the shape to be molded. It can be of any value depending on the shape, dimensions, etc. of the resin pipe to be used, the viewpoint of demolding work, etc.

このようにして成形された樹脂管6を、第3図
〜第5図に例示する。ここでは、管6の一端に受
口7が形成されるとともに、他端に挿口8が形成
されたものを例示している。受口7は、前述の第
2の帯状突部4a,4bに対応して形成されてい
る。
The resin pipe 6 molded in this way is illustrated in FIGS. 3 to 5. Here, an example is shown in which a socket 7 is formed at one end of the pipe 6, and an insertion port 8 is formed at the other end. The socket 7 is formed to correspond to the second band-shaped projections 4a and 4b described above.

管6は、その長さ方向にわたつて周方向ひとつ
割りに形成されており、9はその分割部である。
この分割部9は、一方壁部10が他方壁部11の
肉厚分だけ半径方向外側に位置するような受挿構
造に形成されている。すなわち、一方壁部10は
前述の第1の帯状突部3に対応して形成された突
出部により構成されるもので、この突出部の一方
の立上り部を軸心方向にわたつて切断することに
より分割部9が形成されることになる。この分割
部9においては、一方壁部10と他方壁部11と
は、互いに重ね合わされたうえにボルト12等の
結合手段にて結合されている。また一方壁部10
は、受口7の部分すなわち芯金本体1における両
帯状突部3,4a,4bの交差部分においては、
受口7と面一になるように形成されることにな
る。なお、受口7の部分においては分割部9にお
ける一方壁部10の端面と他方壁部11の端面と
が当たつて、他の部分のような重ね合わせ構造が
得られないため、第3図bに示すように受口7の
一部分7aを切り取つてこれに対処する。こうす
ることで、第5図に示すように分割部9において
も受口7が周方向に連続し、かつ第4図に示すよ
うに受口7以外の場所では壁部10,11どうし
が確実に重なり合うことになる。
The tube 6 is formed into one piece in the circumferential direction along its length, and 9 is the dividing part.
The divided portion 9 is formed in a receiving structure such that one wall portion 10 is located radially outward by the thickness of the other wall portion 11. That is, the one wall portion 10 is constituted by a protrusion formed corresponding to the first band-shaped protrusion 3 described above, and one rising portion of this protrusion is cut in the axial direction. Thus, a divided portion 9 is formed. In this divided portion 9, one wall portion 10 and the other wall portion 11 are superimposed on each other and are coupled by a coupling means such as a bolt 12. Also, one wall portion 10
At the socket 7, that is, at the intersection of both band-like protrusions 3, 4a, and 4b in the core body 1,
It will be formed flush with the socket 7. In addition, in the part of the socket 7, the end face of one wall part 10 and the end face of the other wall part 11 in the divided part 9 come into contact with each other, so that the overlapping structure unlike the other parts cannot be obtained, so as shown in FIG. To deal with this, a part 7a of the socket 7 is cut out as shown in FIG. By doing this, the socket 7 is continuous in the circumferential direction even in the divided part 9 as shown in FIG. will overlap.

第6図は管6の軸心方向の固定方法を示すもの
である。ここで13は敷設通路としてのシールド
内面を示している。まず、敷設すべき管6をその
分割部を利用して弾性変形により縮径させ、適当
な治具を利用して縮径状態を維持しながら、台車
等を利用して前記シールド内を敷設位置に向けて
運搬する。次に、aに示すように分割部9を上側
にして縮径を解除すると、管6は元の状態に拡径
しようとする。そこでbのように、一方壁部10
に予め取り付けておいたステンレス製のボルト1
2を他方壁部11のボルト穴14に通し、cに示
すようにナツト15で固定する。
FIG. 6 shows a method of fixing the tube 6 in the axial direction. Here, reference numeral 13 indicates the inner surface of the shield as a laying passage. First, the diameter of the pipe 6 to be laid is reduced by elastic deformation using its divided portion, and while maintaining the reduced diameter state using an appropriate jig, the inside of the shield is positioned using a trolley etc. Transport towards. Next, as shown in a, when the diameter reduction is canceled with the divided portion 9 facing upward, the tube 6 attempts to expand in diameter to its original state. Therefore, as shown in b, one wall portion 10
Stainless steel bolt 1 pre-attached to
2 through the bolt hole 14 of the other wall portion 11 and fixed with a nut 15 as shown in c.

なお、この管6を下水用として使用する場合
は、通常管内は満水状態とならないため、上記ボ
ルト締め部や受口7における分割部9などに特別
なシールを施す必要はない。特にシールが必要な
場合には、接着剤等を塗布すればよい。
Note that when this pipe 6 is used for sewage, the inside of the pipe is usually not filled with water, so there is no need to apply special seals to the bolted part, the divided part 9 of the socket 7, etc. In particular, if a seal is required, an adhesive or the like may be applied.

考案の効果 以上述べたように本考案によると、長さ方向に
わたつて周方向ひとつ割りに構成された管を、分
割部や管継手部の良好な接合構造を有した状態で
成形することができる。
Effects of the invention As described above, according to the invention, it is possible to form a pipe that is divided into pieces in the circumferential direction along its length with a good joining structure at the divided parts and pipe joint parts. can.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図a,bは本考案の一実施例の樹脂管製造
用芯金の正面図および要部の斜視図、第2図はそ
の横断面図、第3図a,bは本考案の芯金により
成形された樹脂管を例示する断面図および要部の
斜視図、第4図は第3図における−断面図、
第5図は第3図における−矢視図、第6図は
第3図に示す管の軸心方向の固定方法の説明図で
ある。 1……芯金本体、3……第1の帯状突部、4
a,4b……第2の帯状突部、6……樹脂管、9
……分割部、10……一方壁部、11……他方壁
部。
Figures 1a and b are front views and perspective views of essential parts of a core metal for manufacturing resin pipes according to an embodiment of the present invention, Figure 2 is a cross-sectional view thereof, and Figures 3a and b are cores of the present invention. A cross-sectional view and a perspective view of essential parts illustrating a resin pipe molded from gold, FIG. 4 is a cross-sectional view of FIG. 3,
5 is a view in the direction of the - arrow in FIG. 3, and FIG. 6 is an explanatory diagram of a method of fixing the tube in the axial direction shown in FIG. 3. 1... Core metal body, 3... First band-shaped protrusion, 4
a, 4b...second band-shaped protrusion, 6...resin pipe, 9
... Divided portion, 10... One wall portion, 11... Other wall portion.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 円柱状の芯金本体の外面に、軸心方向の第1の
帯状突部と、周方向の第2の帯状突部とを形成し
たことを特徴とする樹脂管製造用芯金。
A core metal for manufacturing a resin pipe, characterized in that a first band-shaped protrusion in the axial direction and a second band-shaped protrusion in the circumferential direction are formed on the outer surface of a cylindrical core body.
JP8767985U 1985-06-10 1985-06-10 Expired JPH037147Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8767985U JPH037147Y2 (en) 1985-06-10 1985-06-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8767985U JPH037147Y2 (en) 1985-06-10 1985-06-10

Publications (2)

Publication Number Publication Date
JPS61201827U JPS61201827U (en) 1986-12-18
JPH037147Y2 true JPH037147Y2 (en) 1991-02-22

Family

ID=30640123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8767985U Expired JPH037147Y2 (en) 1985-06-10 1985-06-10

Country Status (1)

Country Link
JP (1) JPH037147Y2 (en)

Also Published As

Publication number Publication date
JPS61201827U (en) 1986-12-18

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