JPS596211B2 - Manufacturing method of reinforced synthetic resin pipe - Google Patents
Manufacturing method of reinforced synthetic resin pipeInfo
- Publication number
- JPS596211B2 JPS596211B2 JP53103504A JP10350478A JPS596211B2 JP S596211 B2 JPS596211 B2 JP S596211B2 JP 53103504 A JP53103504 A JP 53103504A JP 10350478 A JP10350478 A JP 10350478A JP S596211 B2 JPS596211 B2 JP S596211B2
- Authority
- JP
- Japan
- Prior art keywords
- mandrel
- synthetic resin
- receiving mold
- reinforcing material
- press
- 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
Landscapes
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】
本発明は、強化合成樹脂管の製造方法に関し、さらに詳
しく言えば、繊維材料もしくは線材料またはこれらの組
合せによつて強化された合成樹脂管の製造方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a reinforced synthetic resin pipe, and more particularly, to a method for manufacturing a synthetic resin pipe reinforced with fiber material, wire material, or a combination thereof. .
従来の強化合成樹脂管は、半固体状の合成樹脂を含有し
ているガラス繊維等を水平に保持した心金に多層に巻付
けて硬化成形されていた。Conventional reinforced synthetic resin pipes are hardened and molded by winding glass fibers containing semi-solid synthetic resin in multiple layers around a horizontally held mandrel.
この製造方法では、比較的小径の長尺管をつくるときに
は心金が湾曲して予備成形が困難になる。したがつて、
従来の製造方法では、製品寸法に一定の限界があつた。
本発明の目的は、広範囲にわたる寸法の製品を安価に品
質よく製造できる方法を提供することにある。In this manufacturing method, when producing a long tube with a relatively small diameter, the mandrel becomes curved, making preforming difficult. Therefore,
Conventional manufacturing methods have certain limits on product dimensions.
SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing products of a wide range of sizes at low cost and with good quality.
本発明の方法の特徴は、心金を垂直に吊下げて、その周
りに繊維材料もしくは線材料またはこれらの組合せ（以
下、単に補強材という。A feature of the method of the present invention is that the mandrel is suspended vertically, and a fiber material or a wire material or a combination thereof (hereinafter simply referred to as reinforcement material) is formed around the mandrel.
）を巻き付けて予備成形し、所定量の液状の合成樹脂を
注入した受け型に予備成形された補強材を保持した心金
を挿入し、挿入開始時からまたは所定長まで挿入した時
点から心金または受け型に振動を加えながら心金を受け
型内に圧入し、その後硬化、脱型、離型を行つて強化合
成樹脂管を得ることにある。本発明の方法を図面を参照
して説明する。第１図および第２図は本発明の方法を実
施する一連の工程を立体的に示すものであつて、第１図
は側面図で、第２図は平面図である。図面では、説明の
便宜上テーパ付き強化合成樹脂管を例示しているが、通
常の直管にも適用できるものである。まず、予備成形工
程１において補強材の予備成形を行う。この予備成形工
程１では心金１１を垂直に吊り下げ、心金に上下に移動
させながら心金上に補強材１２を多層に巻き付ける。こ
の予備成形工程の詳細については第３図および第４図を
参照して後述する。予備成形された補強材を保持した心
金は加振圧入工程２に移される。) is preformed by winding it, and the mandrel holding the preformed reinforcing material is inserted into a receiving mold in which a predetermined amount of liquid synthetic resin is injected, and the mandrel is inserted from the beginning of insertion or from the time it is inserted to a predetermined length. Alternatively, the mandrel is press-fitted into the receiving mold while applying vibration to the receiving mold, and then hardened, demolded, and released from the mold to obtain a reinforced synthetic resin pipe. The method of the present invention will be explained with reference to the drawings. 1 and 2 are three-dimensional illustrations of a series of steps for implementing the method of the present invention, with FIG. 1 being a side view and FIG. 2 being a plan view. In the drawings, a tapered reinforced synthetic resin pipe is illustrated for convenience of explanation, but the present invention can also be applied to a normal straight pipe. First, in a preforming step 1, a reinforcing material is preformed. In this preforming step 1, the mandrel 11 is suspended vertically, and the reinforcing material 12 is wound around the mandrel in multiple layers while being moved up and down the mandrel. Details of this preforming process will be described later with reference to FIGS. 3 and 4. The mandrel holding the preformed reinforcing material is transferred to the vibrating press-fitting step 2.
加振圧入工程２では、前以つて所定量の液状の合成樹脂
を注入した受け型２１を垂直に支持し、その上から補強
材を保持した心金１１を挿入する。心金の挿入開始時か
らまたは心金１１が受け型２１内に所定長だけ挿入され
たときに、心金１１または受け型２１に振動を加えなが
ら心金１１を受け型２１内に圧入する。この加振圧入中
に液状の合成樹脂は予備成形された補強材中に均等に浸
透する。挿入・圧入時に発生する気泡は振動により除去
される。加振圧入工程の詳細については第５図および第
６図を参照して説明する。次いで、一体となつた心金お
よび受け型は硬化工程３に送られて所定の時間所定の温
度で加熱される。In the vibrating press-fitting step 2, the receiving mold 21 into which a predetermined amount of liquid synthetic resin has been injected is vertically supported, and the mandrel 11 holding the reinforcing material is inserted from above. From the time of starting insertion of the mandrel or when the mandrel 11 has been inserted into the receiving mold 21 by a predetermined length, the mandrel 11 is press-fitted into the receiving mold 21 while applying vibration to the mandrel 11 or the receiving mold 21. During this vibration press-fitting, the liquid synthetic resin evenly penetrates into the preformed reinforcing material. Air bubbles generated during insertion and press-fitting are removed by vibration. Details of the vibration press-fitting process will be explained with reference to FIGS. 5 and 6. Next, the integrated mandrel and receiver mold are sent to a curing step 3 and heated at a predetermined temperature for a predetermined time.
この間に、合成樹脂を含浸した予備成形品は硬化成形さ
れる。硬化工程を経た受け型２１と心金１１とは脱型工
程４において分離される。During this time, the preform impregnated with synthetic resin is cured and molded. The receiving mold 21 and the mandrel 11 that have undergone the hardening process are separated in a demolding process 4.
このとき硬化成形された成形品１０は心金１１または受
け型２１に付着残留する。通常は心金１１に付着する。
成形品１０を付着したままの心金１１または受け型２１
は離型工程５において、心金１１または受け型２１と成
形品１０とに分離される。At this time, the cured molded product 10 remains attached to the core metal 11 or the receiving mold 21. Usually, it adheres to the mandrel 11.
Mandrel 11 or receiving mold 21 with molded product 10 still attached
is separated into the core metal 11 or the receiving mold 21 and the molded product 10 in the mold release step 5.
成形品１０は通常の仕上工程（図示せず）を経て製品と
しての強化合成樹脂管１００になる。一方、成形品１０
を引き抜かれた心金１１は洗浄され、離型剤を塗布され
て前述の予備成形工程１に戻される。先の脱型工程４ま
たは離型工程５において、挿入物をすべて引き抜かれた
受け型２１は、洗浄工程６において洗浄された後に離型
剤を塗布されて合成樹脂注入工程７に送られる。注入工
程７によつて所定量の液状の合成樹脂を注入された受け
型２１は前述の加振圧入工程２に戻される。第１図、第
３図および第４図を参照して、予備成型工程１の詳細に
ついて説明する。The molded product 10 undergoes a normal finishing process (not shown) to become a reinforced synthetic resin pipe 100 as a product. On the other hand, molded product 10
The cored metal 11 that has been pulled out is cleaned, coated with a mold release agent, and returned to the preforming step 1 described above. The receiving mold 21 from which all the inserts have been removed in the demolding process 4 or 5 is cleaned in a cleaning process 6, coated with a mold release agent, and sent to a synthetic resin injection process 7. The receiving mold 21 into which a predetermined amount of liquid synthetic resin has been injected in the injection step 7 is returned to the above-mentioned vibration press-fitting step 2. Details of the preforming step 1 will be explained with reference to FIGS. 1, 3, and 4.
予備成形機としては、心金と、心金を垂直に吊り下げて
保持するホルダと、ホルダを回転させる機構と、ホルダ
および回転機構を昇降させる機構とを備えたものであれ
ばよい。心金は要求される製品の形状に応じて、直棒も
しくはテーパ付き棒または円形断面もしくは多角形断面
のうちのいずれの組合せのものでもよい。心金の頂部に
はねじ嵌合の複数個のリング１１１が嵌め込まれていて
、補強材の始端および終端をそれぞれ保持する。第３図
Ａに示すように、心金１１の上端肩部１１ａと最下部に
あるリング１１１ａとの間に適当な間隔をあけ、ここに
補強材１２の始端を誘導してリング１１１ａで締め付け
固定する（第３図Ｂ）。Any preforming machine may be used as long as it is equipped with a mandrel, a holder that vertically suspends and holds the mandrel, a mechanism that rotates the holder, and a mechanism that raises and lowers the holder and the rotation mechanism. The mandrel may be of any combination of straight or tapered rods or circular or polygonal cross-sections, depending on the required product shape. A plurality of threaded rings 111 are fitted into the top of the mandrel to hold the starting and ending ends of the reinforcement, respectively. As shown in FIG. 3A, an appropriate space is left between the upper shoulder 11a of the mandrel 11 and the ring 111a at the bottom, and the starting end of the reinforcing material 12 is guided there and fixed by tightening with the ring 111a. (Figure 3B).
次いで、心金１１を一定方向に回転させながら心金１１
を一定速度で上昇させる（第３図０−このとき補強剤１
２は心金１１の周りに巻き付けられる。心金１１が上限
まで上昇したとき、第４図Ａに示すように、補強材１２
は心金１１の最先端に設けてある突起１１ｂの周りに巻
き付けられる。Next, while rotating the mandrel 11 in a certain direction, the mandrel 11
is raised at a constant speed (Fig. 3 0 - At this time, reinforcing agent 1
2 is wrapped around the mandrel 11. When the mandrel 11 rises to the upper limit, as shown in FIG. 4A, the reinforcing material 12
is wrapped around the protrusion 11b provided at the leading edge of the mandrel 11.
次・いで、心金１１の回転を継続したまま心金１１を一
定速度で下降させると、第４図Ｂに示すように、補強材
１２は心金１１の最下端部から連続的に巻付けが再開さ
れることになる。心金１１の下降をそのまま継続すれば
、補強材１２は前回巻き付けられているものの上にリー
ド角を逆にしてさらに巻き付けられる（第３図Ｄ）。第
３図Ｅに示すように、心金１１が下限まで下降したとき
、補強材１２は心金１１の上方肩部１１ａまたはリング
１１１ａの上縁の周りに巻き付く。Next, when the mandrel 11 is lowered at a constant speed while continuing to rotate, the reinforcing material 12 is continuously wrapped around the mandrel 11 from the lowest end, as shown in FIG. 4B. will be restarted. If the mandrel 11 continues to descend, the reinforcing material 12 will be further wrapped around the previously wrapped reinforcing material 12 with the lead angle reversed (FIG. 3D). As shown in FIG. 3E, when the mandrel 11 is lowered to its lower limit, the reinforcement 12 wraps around the upper edge of the upper shoulder 11a or ring 111a of the mandrel 11.
このとき、心金１１を再度上昇させれば第３図Ｃに示す
ような巻付けが連続的に再開される。このようにして、
心金１１を適当回数昇降させることによつて所望の厚み
の補強材の予備成形が達成される。最後に、第３図Ｆに
示すように、リング１１１ａと１１１ｂとの間に補強材
１２を挟み付けてカツタ１１２によつて補強材１２を切
断する。At this time, if the mandrel 11 is raised again, the winding as shown in FIG. 3C is resumed continuously. In this way,
By raising and lowering the mandrel 11 an appropriate number of times, preforming of the reinforcing material to a desired thickness is achieved. Finally, as shown in FIG. 3F, the reinforcing material 12 is sandwiched between the rings 111a and 111b, and the reinforcing material 12 is cut by the cutter 112.
補強材１２の終端はリング１１１ａと１１１ｂとの間に
挟み付けられて解けなくなる。要約すれば、補強材の予
備成形は、心金の昇降回数・昇降速度・回転速度によつ
て任意に選定できることになる。The end of the reinforcing material 12 is sandwiched between the rings 111a and 111b and cannot be unraveled. In summary, the preforming of the reinforcing material can be arbitrarily selected depending on the number of times the mandrel is raised and lowered, the speed of raising and lowering, and the rotational speed.
次に、第１図、第５図および第６図を参照して加振圧入
工程の詳細について説明する。Next, details of the vibration press-fitting process will be explained with reference to FIGS. 1, 5, and 6.
まず、第１図に関連して説明した合成樹脂注入工程７に
おいて、前以つて受け型２１に液状の合成樹脂を所定量
だけ注入しておく（第５図Ａ参呻注入量は要求される製
品寸法によつて決まる。First, in the synthetic resin injection step 7 explained in connection with FIG. 1, a predetermined amount of liquid synthetic resin is injected into the receiving mold 21 in advance (see FIG. Depends on product dimensions.
合成樹脂としては熱硬化性のものが好ましく、例えば不
飽和ポリエステル樹脂、エポキシ樹脂、フエノールホル
ムアルデヒド樹脂、ポリイミド樹脂などがよい。加振圧
入機としては、液状の合成樹脂を注入した受け型２１内
に、予備成形された補強材を保持した心金１１を挿入し
、心金１１または受け型２１に振動を加えることができ
る機能を有するものであればよい。The synthetic resin is preferably thermosetting, such as unsaturated polyester resin, epoxy resin, phenol formaldehyde resin, polyimide resin, etc. As a vibration press-in machine, the mandrel 11 holding a preformed reinforcing material is inserted into the receiving mold 21 injected with liquid synthetic resin, and vibration can be applied to the mandrel 11 or the receiving mold 21. It may be anything as long as it has a function.
第５図Ｂに示すように、心金１１は、その先端が受け型
２１内に注入された液状の合成樹脂に達するまでは滑ら
かに受け型２１内に挿入されるが、その後は合成樹脂に
よる浮力や粘性などによる抵抗が次第に増加し、通常の
圧入荷重ではそれ以上の心金の挿入が困難になる。As shown in FIG. 5B, the mandrel 11 is smoothly inserted into the receiving mold 21 until its tip reaches the liquid synthetic resin injected into the receiving mold 21, but after that, the mandrel 11 is inserted into the receiving mold 21. Resistance due to buoyancy, viscosity, etc. gradually increases, making it difficult to insert the mandrel further under normal press-fitting loads.
そこで、本発明の方法においては、心金の挿入時または
圧入時に心金または受け型２１に振動を加えることによ
つて心金の圧入の円滑化を図つている。Therefore, in the method of the present invention, the press-fitting of the mandrel is made smoother by applying vibration to the mandrel or the receiving die 21 when inserting or press-fitting the mandrel.
このようにして、第５図Ｃに示すように、心金１１は受
け型２１内に完全に挿入されることになる。振動の周波
数および振幅ならびに挿入圧力等の最適範囲は、多数の
実験から求めることができる。In this way, the mandrel 11 is completely inserted into the receiving mold 21, as shown in FIG. 5C. Optimal ranges for vibration frequency and amplitude, insertion pressure, etc. can be determined from numerous experiments.
振動の形体としては、心金または受け型の長手方向に関
して横振動よりも縦振動の方が効果的である。加振圧入
効果の傾向としては、第６図に示すように、心金の挿入
時間（分）をＸ軸にまた心金の挿入圧力（Ｋｇ／（１−
JモV１）をＹ軸にとつた場合に、Ｘ軸およびＹ軸を漸近
線とする双曲線の一方になる傾向を示す。そして、振動
数および振幅が最適範囲内にあるときに、離心率が最小
になり、前記最適範囲をはずれたときに、離心率はさら
に大きくなり、振動をまつたく加えないときには離心率
は最大になるものと予想される。要約すれば、加振圧入
効果は、心金の挿入圧力の低下および挿入時間の短縮を
達成できるばかりではなく、合成樹脂中の脱抱作用によ
り均質な樹脂の含浸を促進する。As for the form of vibration, longitudinal vibration is more effective than transverse vibration in the longitudinal direction of the mandrel or receiver mold. As shown in Fig. 6, the tendency of the vibration press-fitting effect is as follows: The insertion time (minutes) of the mandrel is plotted on the X axis, and the insertion pressure of the mandrel (Kg/(1-
When JMoV1) is taken on the Y axis, it shows a tendency to become one side of a hyperbola with the X and Y axes as asymptotes. When the frequency and amplitude are within the optimum range, the eccentricity is at a minimum; when the frequency and amplitude are outside the optimum range, the eccentricity becomes even larger; and when no vibrations are applied, the eccentricity is at a maximum. It is expected that In summary, the vibration press-fitting effect can not only reduce the insertion pressure and shorten the insertion time of the mandrel, but also promote homogeneous resin impregnation through the desorption effect in the synthetic resin.
硬化炉としては、一体となつた心金および受け型を炉内
に垂直に吊り下げて連続的に搬送できる機能を有するも
のであればよい。Any hardening furnace may be used as long as it has the function of being able to vertically suspend and continuously transport the integrated mandrel and receiving mold in the furnace.
炉内の温度を自動制御できるようにすることが好ましい
。心金１１を受け型２１から引き抜く脱型機および成形
品１０を心金１１から引き離す離型機は、慣用の機構を
備えたものでよい。Preferably, the temperature inside the furnace can be automatically controlled. The demolding machine for pulling out the mandrel 11 from the receiving mold 21 and the demolding machine for separating the molded product 10 from the mandrel 11 may be equipped with a conventional mechanism.
特に、図示したようなテーパ付き管の場合には脱型およ
び離型はより簡単になる。洗浄工程６、合成樹脂注入工
程７および仕上工程などについては通常の周知の方法を
利用すればよいので、ここでは詳細な説明を省略する。In particular, demolding and demolding are easier with tapered tubes as shown. As for the cleaning step 6, the synthetic resin injection step 7, the finishing step, etc., ordinary well-known methods may be used, so detailed explanations thereof will be omitted here.
以上の説明から明らかなように、本発明の方法によれば
、比較的簡単かつ安価な工程で広範囲にわたる寸法の製
品を品質よく製造することができる。As is clear from the above description, according to the method of the present invention, products of a wide range of dimensions can be manufactured with good quality through relatively simple and inexpensive steps.
第１図は本発明の方法を説明する概略工程図。
第２図は第１図の工程を平面的に示す概略説明図。第３
図は予備成形工程の概略説明図。第４図は第３図に示す
工程の一部の部分拡大図。第５図は第１図に示す工程の
一部の部分拡大図。第６図は加振圧入効果の概略的傾向
を示すグラフ。１：予備成形工程、２：加振圧入工程、
３：硬化工程、４：脱型工程、５：離型工程、６：洗浄
工程、７；合成樹脂注入工程、１０：成形品、１１：心
金、１２：補強材、２１：受け型、１００：製品。FIG. 1 is a schematic process diagram illustrating the method of the present invention. FIG. 2 is a schematic explanatory diagram showing the process of FIG. 1 in a plan view. Third
The figure is a schematic explanatory diagram of the preforming process. FIG. 4 is a partial enlarged view of a part of the process shown in FIG. 3. FIG. 5 is a partial enlarged view of a part of the process shown in FIG. 1. FIG. 6 is a graph showing a general trend of the vibration press-fitting effect. 1: Preforming process, 2: Vibration press-fitting process,
3: Curing process, 4: Demoulding process, 5: Mold release process, 6: Cleaning process, 7: Synthetic resin injection process, 10: Molded product, 11: Core metal, 12: Reinforcing material, 21: Receiving mold, 100 :product.
Claims (1)
備成形をする工程と、受け型に所定量の液状の合成樹脂
を注入する工程と、該受け型に前記心金を挿入し振動を
加えながら該心金を前記受け型内に圧入する工程と、前
記受け型内に前記心金を挿入したまま合成樹脂を硬化成
形する工程と、前記心金を前記受け型から引き抜く工程
と、硬化成形品を前記心金または受け型から引き離す工
程とからなる強化合成樹脂管の製造方法。1. Preforming by hanging the mandrel vertically and wrapping a reinforcing material around it, injecting a predetermined amount of liquid synthetic resin into the receiving mold, and inserting the mandrel into the receiving mold. a step of press-fitting the mandrel into the receiving mold while applying vibration; a step of curing and molding the synthetic resin with the mandrel inserted into the receiving mold; and a step of pulling out the mandrel from the receiving mold. . A method for producing a reinforced synthetic resin pipe, comprising the step of separating the cured molded product from the mandrel or the receiving mold.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53103504A JPS596211B2 (en) | 1978-08-25 | 1978-08-25 | Manufacturing method of reinforced synthetic resin pipe |
| US05/967,894 US4256680A (en) | 1978-08-25 | 1978-12-11 | Method and apparatus for producing reinforced synthetic resin pipe |
| GB7924786A GB2040786B (en) | 1978-08-25 | 1979-07-17 | Producing reinforced resin tubular items |
| CA334,152A CA1134115A (en) | 1978-08-25 | 1979-08-21 | Method and apparatus for producing reinforced synthetic resin pipe |
| FR7921376A FR2434025A1 (en) | 1978-08-25 | 1979-08-24 | PROCESS AND APPARATUS FOR THE MANUFACTURE OF SYNTHETIC RESIN REINFORCED PIPES |
| GB08205393A GB2104437B (en) | 1978-08-25 | 1982-02-24 | Producing reinforced synthetic resin pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53103504A JPS596211B2 (en) | 1978-08-25 | 1978-08-25 | Manufacturing method of reinforced synthetic resin pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5530912A JPS5530912A (en) | 1980-03-05 |
| JPS596211B2 true JPS596211B2 (en) | 1984-02-09 |
Family
ID=14355803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53103504A Expired JPS596211B2 (en) | 1978-08-25 | 1978-08-25 | Manufacturing method of reinforced synthetic resin pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS596211B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6163205U (en) * | 1984-09-28 | 1986-04-28 | ||
| JPH0434897B2 (en) * | 1987-12-29 | 1992-06-09 | Yokokawa Medeikaru Shisutemu Kk |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104552991B (en) * | 2014-11-25 | 2017-01-25 | 中材科技股份有限公司 | De-molding device for large-length-diameter-ratio composite material thin wall pipe and de-molding method of de-molding device |
-
1978
- 1978-08-25 JP JP53103504A patent/JPS596211B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6163205U (en) * | 1984-09-28 | 1986-04-28 | ||
| JPH0434897B2 (en) * | 1987-12-29 | 1992-06-09 | Yokokawa Medeikaru Shisutemu Kk |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5530912A (en) | 1980-03-05 |
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