JPS62774B2 - - Google Patents
Info
- Publication number
- JPS62774B2 JPS62774B2 JP55142808A JP14280880A JPS62774B2 JP S62774 B2 JPS62774 B2 JP S62774B2 JP 55142808 A JP55142808 A JP 55142808A JP 14280880 A JP14280880 A JP 14280880A JP S62774 B2 JPS62774 B2 JP S62774B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- mandrel
- uncured
- arc
- cylindrical body
- 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
Links
- 239000000463 material Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 8
- 239000002990 reinforced plastic Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009751 slip forming Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000011437 continuous method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Moulding By Coating Moulds (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
【発明の詳細な説明】
本発明は連続的に強化プラスチツク曲管を成形
する方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for continuously forming reinforced plastic bent tubes.
従来みられる曲管の成形方法は一本一本製造す
るいわゆるバツチ式のみで、連続式はみあたらな
い。従つて、生産性が悪く、製品は高価となる欠
点があつた。 The conventional method for forming bent pipes is the so-called batch method, in which each pipe is manufactured one by one, and there is no continuous method. Therefore, there were disadvantages in that productivity was poor and the products were expensive.
本発明の目的とするところは、材料形成（未硬
化管の形成）は直管状に行い、その後連続的に曲
り硬化させて曲管を形成する方法で、強化プラス
チツクとレジンコンクリートとからなる複合管で
あつても生産性よく製造することができる強化プ
ラスチツク曲管の成形方法を提供するものであ
る。 The object of the present invention is to form a composite pipe made of reinforced plastic and resin concrete by forming the material into a straight pipe shape and then continuously bending and hardening it to form a curved pipe. The present invention provides a method for molding a reinforced plastic curved pipe that can be manufactured with good productivity even when
以下実施例たる図面に基いて本発明の構成及び
作用効果を説明する。Ａは基部が直線状で、先端
部が所定の円弧状となつたマンドレルで、一方が
支持されている。１がマンドレルの直線部で、２
がマンドレルの円弧状部である。このように成る
マンドレルＡの基部の方から紙、プラスチツク等
の帯状体４を巻回して一体的に接着された筒状体
５を形成する。マンドレルの直線部１の基部寄り
で形成された筒状体５に無端ベルト６を巻付けて
筒状体５の前進と回転とを行う。前進と回転とが
行われている筒状体５の外周に硬化性樹脂等から
なる管形成材料である内面材７、中間材８及び外
面材９を巻付けて未硬化管１０を形成する。マン
ドレルの直線部１で形成された未硬化管１０はマ
ンドレルの円弧状部２に順次送られる。未硬化管
１０をマンドレルの円弧状部２に所定長さ送る
と、カツター１１にて切断される。切断された未
硬化管１０は回転することなく前進させられ、円
弧状部２にて所定形状に賦形されると同時に硬化
炉１２で硬化させて曲管を連続的に製造できる。
カツター１１では未硬化管の筒状体５まで切断し
なくてはならないため、この部分のマンドレル周
囲には環状凹溝３を形成している。このように、
本発明において未硬化管を切断することは、単に
所定の長さの管体を得るという作用を奏するのみ
ならず、切断することによりそれまで回転しなが
ら前進していた未硬化管を回転させることなく前
進させて、マンドレルの円弧状部に送るという重
要な作用をも奏するのである。マンドレルの円弧
状部２で未硬化管１０及び硬化された曲管の前進
抵抗が大きい場合には、第３図に示すように、円
弧状部２の適当位置に数個の回転体１３を設け、
スムーズに前進することができるようになす。ま
た、円弧状部２の円弧が小さく、管厚の大きい場
合には、第１図に示すように、キヤタピラー式の
引取装置１４を設け、未硬化管１０及び曲管を強
制的に前進させる。 DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration and effects of the present invention will be explained below based on drawings which are examples. A is a mandrel having a linear base and a predetermined arcuate tip, and one side of the mandrel is supported. 1 is the straight part of the mandrel, 2
is the arc-shaped part of the mandrel. A cylindrical body 5 is formed by winding a band 4 of paper, plastic, etc. from the base of the mandrel A thus constructed and integrally bonding the same. An endless belt 6 is wound around a cylindrical body 5 formed near the base of the straight part 1 of the mandrel, and the cylindrical body 5 is advanced and rotated. An uncured tube 10 is formed by wrapping an inner surface material 7, an intermediate material 8, and an outer surface material 9, which are tube forming materials made of curable resin or the like, around the outer periphery of the cylindrical body 5, which is being advanced and rotated. The uncured tube 10 formed by the straight section 1 of the mandrel is sequentially fed to the arcuate section 2 of the mandrel. When the uncured tube 10 is fed a predetermined length to the arcuate portion 2 of the mandrel, it is cut by a cutter 11. The cut uncured tube 10 is advanced without rotating, is shaped into a predetermined shape in the arcuate portion 2, and is simultaneously cured in the curing furnace 12, so that bent tubes can be continuously manufactured.
Since the cutter 11 must cut the uncured tube up to the cylindrical body 5, an annular groove 3 is formed around the mandrel in this area. in this way,
In the present invention, cutting the uncured tube not only has the effect of simply obtaining a tube body of a predetermined length, but also causes the uncured tube, which had been moving forward while rotating, to rotate by cutting it. It also performs the important function of advancing the material without any movement and sending it to the arc-shaped portion of the mandrel. If the forward resistance of the uncured tube 10 and the cured bent tube is large in the arcuate portion 2 of the mandrel, several rotating bodies 13 are provided at appropriate positions in the arcuate portion 2, as shown in FIG. ,
Make sure you can move forward smoothly. If the arc of the arcuate portion 2 is small and the tube thickness is large, a caterpillar type take-up device 14 is provided as shown in FIG. 1 to forcibly move the uncured tube 10 and the bent tube forward.
紙、プラスチツク等の帯状体４を巻回して形成
する円筒体５の肉厚は、円弧の程度、製品（曲
管）の肉厚、寸法精度により決定されるが、回転
と前進が可能な最低肉厚にするのがよい。 The wall thickness of the cylindrical body 5 formed by winding a strip 4 of paper, plastic, etc. is determined by the degree of circular arc, the wall thickness of the product (curved pipe), and dimensional accuracy, but it is the minimum thickness that allows rotation and advancement. It is better to make it thick.
未硬化管１０の切断個所には、第４図に示すよ
うに、割型のスペーサー１５を装着し、未硬化管
１０の回転がスムーズに行われるようにすると共
に、切断面の保護をはかつている。 As shown in FIG. 4, a split spacer 15 is attached to the cut portion of the uncured tube 10 to ensure smooth rotation of the uncured tube 10 and to protect the cut surface. There is.
上記の如くなる本発明強化プラスチツク曲管の
成形方法は、次の各効果を奏する。 The method for forming a reinforced plastic curved pipe of the present invention as described above has the following effects.
(1) 直線部と円弧状部とからなるマンドレルを用
いるため、材料形成（未硬化管の形成）をマン
ドレルの直線部においてワインデイング（巻付
け）方式で行うことができ、続いて円弧状部で
曲管に連続成形することができる。従つて、曲
管の量産が可能となつた。(1) Since a mandrel consisting of a straight part and an arc-shaped part is used, material formation (formation of an uncured tube) can be performed in the straight part of the mandrel by winding, and then the arc-shaped part It can be continuously formed into a curved pipe. Therefore, mass production of bent pipes became possible.
(2) ワインデイング方式で材料形成（未硬化管の
形成）をすることができるため、グラスフアイ
バーロービング等の安価な補強材を用いること
ができる。(2) Since the material can be formed using the winding method (forming an uncured tube), inexpensive reinforcing materials such as glass fiber roving can be used.
(3) ワインデイング方式を用いることができるこ
とはまた、強化プラスチツクとレジンコンクリ
ートとからなるような複合管であつても生産性
よく曲管を製造することができる。(3) Being able to use the winding method also makes it possible to manufacture curved pipes with good productivity even when they are composite pipes made of reinforced plastic and resin concrete.
(4) 直管から曲管へ連続成形できるため省力化が
図れて安価な曲管を量産することができる。(4) Since straight pipes can be continuously formed into bent pipes, labor can be saved and bent pipes can be mass-produced at low cost.
(5) 成形用マンドレルも直線部と円弧状部とを同
時に備え、一本のマンドレルで直管から曲管を
成形することができるため、成形用具も安価と
なる。(5) The forming mandrel also has a straight portion and an arcuate portion at the same time, and a single mandrel can form a straight pipe into a curved pipe, so the forming tools are also inexpensive.
図面は本発明の実施例を示すもので、第１図は
マンドレルの側面図、第２図は曲管の成形工程を
示す概略図、第３図はマンドレルの円弧状部の周
面に回転体を設けた断面図、第４図は未硬化管の
切断部に割型スペーサーを装着した状態の斜視
図。
１……直線部、２……円弧状部、Ａ……マンド
レル、４……帯状体、５……筒状体、６……無端
ベルト、７，８，９……管形成材料で、それぞれ
内面材、中間材、外面材、１０……未硬化管、１
１……カツター。
The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of a mandrel, Fig. 2 is a schematic diagram showing the process of forming a bent pipe, and Fig. 3 is a rotating body on the circumferential surface of the arc-shaped part of the mandrel. FIG. 4 is a perspective view of the split spacer attached to the cut portion of the uncured tube. 1... Straight part, 2... Arc-shaped part, A... Mandrel, 4... Band-shaped body, 5... Cylindrical body, 6... Endless belt, 7, 8, 9... Tube forming material, respectively. Inner surface material, intermediate material, outer surface material, 10... uncured pipe, 1
1...Cutter.
Claims (1)
したマンドレルを用い、マンドレルの直線部にお
ける基部寄りの方から紙、プラスチツク等の帯状
体を巻回して筒状体を形成し、この筒状体に無端
ベルトを巻付けて前進と回転とを行わしめると共
に筒状体に硬化性樹脂等からなる管形成材料を巻
付けて未硬化管を形成し、この未硬化管をマンド
レルの直線部において所定長さに切断することに
より該切断された未硬化管を回転させることなく
前進させつつ前記マンドレルの円弧状部に送り、
この円弧状部にて未硬化管を所定の曲り形状に賦
形すると共に硬化させて曲管を形成する強化プラ
スチツク曲管の成形方法。1 Using a mandrel whose base is a straight part and whose tip is a predetermined arc-shaped part, a strip of paper, plastic, etc. is wound around the straight part of the mandrel from the side closer to the base to form a cylindrical body. An endless belt is wound around the cylindrical body to cause it to advance and rotate, and a tube-forming material made of hardening resin or the like is wrapped around the cylindrical body to form an uncured tube. cutting the uncured tube to a predetermined length at the section and feeding the cut uncured tube to the arc-shaped section of the mandrel while advancing it without rotating;
A method for forming a reinforced plastic curved tube in which the uncured tube is shaped into a predetermined curved shape at the arc-shaped portion and then hardened to form a curved tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55142808A JPS5766927A (en) | 1980-10-13 | 1980-10-13 | Forming method of reinforced plastic bend |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55142808A JPS5766927A (en) | 1980-10-13 | 1980-10-13 | Forming method of reinforced plastic bend |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5766927A JPS5766927A (en) | 1982-04-23 |
| JPS62774B2 true JPS62774B2 (en) | 1987-01-09 |
Family
ID=15324111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55142808A Granted JPS5766927A (en) | 1980-10-13 | 1980-10-13 | Forming method of reinforced plastic bend |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5766927A (en) |
-
1980
- 1980-10-13 JP JP55142808A patent/JPS5766927A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5766927A (en) | 1982-04-23 |
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