JPH02150580A - Manufacture of plastic valve - Google Patents
Manufacture of plastic valveInfo
- Publication number
- JPH02150580A JPH02150580A JP30436188A JP30436188A JPH02150580A JP H02150580 A JPH02150580 A JP H02150580A JP 30436188 A JP30436188 A JP 30436188A JP 30436188 A JP30436188 A JP 30436188A JP H02150580 A JPH02150580 A JP H02150580A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- mandrel
- heating wire
- principal part
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 229920003023 plastic Polymers 0.000 title abstract 4
- 239000004033 plastic Substances 0.000 title abstract 4
- 238000012856 packing Methods 0.000 claims abstract description 13
- 238000004804 winding Methods 0.000 claims abstract description 10
- 238000000465 moulding Methods 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 229920003002 synthetic resin Polymers 0.000 claims description 20
- 239000000057 synthetic resin Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 8
- 150000002739 metals Chemical class 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 15
- 125000006850 spacer group Chemical group 0.000 abstract description 2
- 238000004070 electrodeposition Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 10
- 230000004927 fusion Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Landscapes
- Valve Housings (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は合成樹脂製の弁に関するもので、詳しくは配管
と接続する弁の接続口内面に電熱線を埋設し、接続する
管と電気融着して接続する合成樹脂製の弁に関するもの
である。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a valve made of synthetic resin, and more specifically, a heating wire is embedded in the inner surface of the connection port of the valve that connects to the pipe, and the connecting pipe and electric fusion This relates to a valve made of synthetic resin that is attached and connected.
合成樹脂製弁の構造は、本出願人が特公昭５９２２１０
９号公報で開示された発明による第８図に示すものがあ
る。このものは、弁体の球形部を包持する弁体包持部お
よびその両側に設けた管路との接続口からなる一体に形
成された弁箱内に、前記接続口と連通して流路を形成す
る通孔を有する前記弁体を回動自在に包持し、前記弁体
は前記通孔両端側の球形部に前記弁箱の弁体包持部に向
かって拡張する反発力を保有させて弁箱内に包持した球
形弁である。The structure of the synthetic resin valve was developed by the applicant in Japanese Patent Publication No. 592210.
There is a device shown in FIG. 8 based on the invention disclosed in Publication No. 9. This valve body has a valve body that is integrally formed with a valve body holding part that encloses a spherical part of the valve body, and a connection port with a pipe line provided on both sides of the valve body, and the flow is communicated with the connection port. The valve body rotatably encloses the valve body having a through hole forming a passage, and the valve body has a repulsive force that expands toward the valve body enclosing portion of the valve body in a spherical portion on both ends of the through hole. It is a spherical valve held and enclosed within a valve box.
弁機能の最も重要な点は内部流体の密封性にあるが、こ
れが前記した弁体に反発力を保有させて弁箱内に包持し
、弁箱と弁体とのシール面圧を高め密封性能を良好にし
ている。The most important aspect of the valve function is the sealing of the internal fluid, which causes the aforementioned valve body to retain repulsive force and be contained within the valve box, increasing the sealing surface pressure between the valve body and the valve body, resulting in a seal. It has good performance.
ところで一般に合成樹脂製弁は、熱に対して敏感で管と
の接続における温度上昇の過程を経ると変形を生じ初期
のシール面圧が変化し、シール性能が低下する問題があ
る。従って合成樹脂弁における管路との接続部が接着剤
を用いて接続したりメカニカル方式で接続するものがあ
るが、電気融着式の弁は弁体とのシール部に管接続時の
熱による悪影響があるため実用化されなかった。In general, synthetic resin valves are sensitive to heat, and when they undergo a process of temperature rise when connected to a pipe, they deform, changing the initial sealing surface pressure, and causing a problem in that sealing performance deteriorates. Therefore, the connection part of synthetic resin valves with the pipe line is connected using adhesive or mechanically, but in the case of electric fusion type valves, the seal part with the valve body is sealed by the heat generated when the pipe is connected. It was not put into practical use because of its negative effects.
本発明は上記の問題点を解消して電気融着によって管と
接続する接続部を有する合成樹脂弁を提供するものであ
る。The present invention solves the above-mentioned problems and provides a synthetic resin valve having a connecting portion that connects to a pipe by electrical fusion.
Ｃ問題点を解決するための手段〕
金属製パツキンケースと該ケース内面に装着したパツキ
ンと弁体と該弁体を回転する弁棒を有する弁の要部の両
側へ流路成形用芯金を組み付け、樹脂被覆を施した電熱
線を該芯金に巻き付け、その後、弁本体部分を要部及び
巻線部分の外側へ成形することを特徴とする合成樹脂弁
の製造方法。Measures for solving problem C] A core metal for forming a flow path is attached to both sides of the main part of the valve, which has a metal packing case, a packing attached to the inner surface of the case, a valve body, and a valve stem that rotates the valve body. A method for manufacturing a synthetic resin valve, which comprises: assembling and winding a resin-coated heating wire around the metal core, and then molding the valve body portion to the outside of the main portion and the winding portion.
〔作 用〕
本発明は上記構成であるから、弁体とのシール用パツキ
ンは金属製パツキンケースの内面に装着されており、接
続部の電熱線巻線部の加熱による本体が変形する影響が
金属製パツキンケースによって遮断されるので弁体との
シール部にまで影響しない。このため管路との接続後に
おいても良好なシール性を確保することができる。[Function] Since the present invention has the above-mentioned configuration, the gasket for sealing with the valve body is attached to the inner surface of the metal gasket case, and the influence of deformation of the main body due to heating of the heating wire winding portion of the connection portion is avoided. Since it is shut off by the metal packing case, it does not affect the sealing part with the valve body. Therefore, good sealing performance can be ensured even after connection with the pipe line.
第１図、第２図及び第３図によって製造方法と構造を説
明する。The manufacturing method and structure will be explained with reference to FIGS. 1, 2, and 3.
まず第１番目に第１図に示すように筒状ケース１０の中
央部に設けた穴１１へ弁棒２０の上部２１を該ケース１
０の内側から挿入し、外へ突出させる。つぎに球状弁体
３０を該ケース１０の内側へ挿入し、弁棒下端部２２と
該球状弁体３ｏの凹部３１を係合する。その後、金属製
パンキンケース４０を該ケース１０の両端へねじ込み、
球状弁体３０を両側から挟持する。この様にして合成樹
脂弁の要部５を構成する。なおパツキン４１はゴム又は
合成樹脂等の弾性体とし、あらかじめ金属製パンキンケ
ース４０に一体焼付成形又は接着あるいははめ込み等の
方法で装着しておく。First, as shown in FIG.
Insert it from the inside of 0 and make it protrude outside. Next, the spherical valve body 30 is inserted into the case 10, and the lower end portion 22 of the valve stem is engaged with the recess 31 of the spherical valve body 3o. Then, screw the metal punkin case 40 into both ends of the case 10,
The spherical valve body 30 is held from both sides. In this way, the main part 5 of the synthetic resin valve is constructed. The gasket 41 is made of an elastic material such as rubber or synthetic resin, and is attached to the metal gasket case 40 in advance by integral baking molding, adhesion, or fitting.
第２番目に該要部５に左右両側から流路成形用芯金６０
．６０’を挿入し、合成樹脂で被覆した電熱線７０を該
芯金６０．６０’の外周へ図のように巻き付け、電熱線
の巻き始めと巻き終りの両端に通電用コネクタービン７
１を取り付ける。Second, the flow path forming core bar 60 is attached to the main part 5 from both the left and right sides.
．． 60', and wrap the heating wire 70 covered with synthetic resin around the outer periphery of the core bar 60 and 60' as shown in the figure, and connect the electrical connector pins 7 to both ends of the heating wire at the beginning and end of the winding.
Attach 1.
第３番目に本体成形用金型（図示せず）に前記要部、芯
金６０．６０’、電熱線７０を含む全体７２をセントし
て本体部分８１を成形する。その後芯金６０．６０’を
抜き第３図に示すようにＯリング９０とスペーサー９１
を組み付け、ハンドル９２を止めねじ９３で弁棒２０の
上端部に固定して完成する。Third, the entire body 72 including the main parts, the core bar 60, 60', and the heating wire 70 is placed in a body molding mold (not shown) to form the body portion 81. After that, remove the core metal 60, 60' and as shown in Figure 3, O-ring 90 and spacer 91.
are assembled, and the handle 92 is fixed to the upper end of the valve stem 20 with a set screw 93 to complete the process.
なお各部品の材質はつぎの通りである。The materials of each part are as follows.
本体８１はポリエチレン等の融着可能な合成樹脂とし、
パツキンケース４０及び筒状ケース１０は管接続時の融
着熱によって容易に変形しない金属製とする。球状弁体
３０及び弁棒２０は合成樹脂、金属どちらでも良いが本
体を成形する際の温度において容易に熱変形しないもの
とする。The main body 81 is made of a fusible synthetic resin such as polyethylene,
The packing case 40 and the cylindrical case 10 are made of metal that does not easily deform due to heat of fusion during pipe connection. The spherical valve body 30 and the valve stem 20 may be made of either synthetic resin or metal, but must not be easily thermally deformed at the temperature at which the main body is molded.
第４図は本発明による別の（第２の）実施例の要部５′
を示す。本例では球状弁体３０と弁棒２１を組み合わせ
た後、球状弁体３０の左右から金属製パンキンケース４
０’、４０”ではさみつけた状態を示し、この状態で第
１実施例と同様に芯金６０．６０’を球状弁体３０の内
側へ挿入した上で電熱線７０を巻き付けて本体部分を成
形するものである。FIG. 4 shows a main part 5' of another (second) embodiment of the present invention.
shows. In this example, after the spherical valve body 30 and the valve stem 21 are combined, a metal punkin case 4 is inserted from the left and right sides of the spherical valve body 30.
0' and 40", and in this state, the core bar 60.60' is inserted into the inside of the spherical valve body 30 as in the first embodiment, and the heating wire 70 is wrapped around the main body. It is something to be molded.
第５図は本発明による第３の実施例で、合成樹脂製のバ
タフライ弁の完成品を示す。FIG. 5 is a third embodiment of the present invention, showing a completed product of a butterfly valve made of synthetic resin.
あらかじめパツキンケース４０′の内面にゴム等の弾性
体のパツキン４３を一体焼付成形等の方法にて装着しで
ある。パツキン４３は第６図に示すごとく環状で弁体３
２の外周および弁棒２３の外周をシールする。A gasket 43 made of an elastic material such as rubber is attached in advance to the inner surface of the gasket case 40' by a method such as integral baking molding. The packing 43 is annular as shown in FIG.
2 and the outer periphery of the valve stem 23 are sealed.
製造方法は、第１番目にあらかじめパツキン４３を装着
したパツキンケース４０′の内側へ弁体３２と弁棒２３
を組み付け、要部を完成する。The manufacturing method is as follows: First, the valve body 32 and the valve stem 23 are placed inside a gasket case 40' in which a gasket 43 is installed in advance.
Assemble and complete the main parts.
第２番目に第１実施例と同様に芯金をパツキンケース４
０′の両側からはめ込み、電熱線７２を芯金外周に巻き
付け、通電用コネクタービン７３を取り付け、本体成形
用金型に前記芯金を含む要郡全体をセントして本体アウ
タ一部分８３を成形する。その後芯金を抜き第５図に示
すようにＯリング９０′及びハンドル９４を取り付けて
完成する。Second, as in the first embodiment, attach the core metal to the packing case 4.
0' from both sides, wrap the heating wire 72 around the outer periphery of the core metal, attach the energizing connector pin 73, and insert the entire main body including the core metal into a mold for molding the main body to form a main body outer portion 83. . Thereafter, the core metal is removed and an O-ring 90' and a handle 94 are attached as shown in FIG. 5 to complete the process.
本発明による合成樹脂弁と管路との接続に際しては、本
体両端の接続口８２に合成樹脂製の管を挿入した後、コ
ネクタービン７１に電流を通電すると電熱線７０の巻線
部が加熱されて接続口内面と管の外面が溶融し一体に融
着される。このとき接続口８２の加熱によって本体の全
体も加熱されるが、球状弁体３０とパツキン４１のシー
ル部分は強固な金属製パツキンケース４０の内側に設け
られているため、熱による本体の変形の影響は防止され
、良好なシール性が保てる。When connecting the synthetic resin valve and the pipe line according to the present invention, after inserting the synthetic resin pipe into the connection ports 82 at both ends of the main body, when current is applied to the connector bin 71, the winding portion of the heating wire 70 is heated. The inner surface of the connection port and the outer surface of the tube are melted and fused together. At this time, the entire body is also heated by the heating of the connection port 82, but since the sealing portion between the spherical valve body 30 and the packing 41 is provided inside the strong metal packing case 40, the main body is prevented from deforming due to heat. The influence is prevented and good sealing performance can be maintained.
以上の通り本発明の合成樹脂弁の製造方法により、シー
ル性能を低下させることなく、電流を通電するだけで容
易に管と接続できる合成樹脂弁を得ることができる。As described above, the synthetic resin valve manufacturing method of the present invention makes it possible to obtain a synthetic resin valve that can be easily connected to a pipe simply by applying an electric current, without deteriorating the sealing performance.
第１図、第２図は本発明による製造方法の実施例を示す
縦断面図、第３図は本発明による完成品の実施例を示す
縦断面図、第４図は本発明による第２の実施例を示す縦
断面図、第５図は本発明による第３の実施例を示す縦断
面図、第６図は本発明による第３の実施例のパツキンを
示す見取図、第７図は本発明による第３の実施例の弁体
を示す見取図、第８図は従来例を示す断面図である。
第４
図
乃
本体インナ一部
本体アＣ
第５1 and 2 are longitudinal cross-sectional views showing an embodiment of the manufacturing method according to the present invention, FIG. 3 is a longitudinal cross-sectional view showing an example of a finished product according to the present invention, and FIG. FIG. 5 is a longitudinal sectional view showing the third embodiment of the present invention, FIG. 6 is a sketch showing the packing of the third embodiment of the present invention, and FIG. 7 is a longitudinal sectional view showing the third embodiment of the present invention. FIG. 8 is a sketch showing a valve body of a third embodiment according to the present invention, and FIG. 8 is a sectional view showing a conventional example. Figure 4 Main body inner part Main body AC 5th
Claims (1)
ッキンと弁体と該弁体を回転する弁棒を有する弁の要部
の両側へ流路成形用芯金を組み付け電熱線を該芯金に巻
き付け、その後、弁本体部分を要部及び巻線部分の外側
へ成形することを特徴とする合成樹脂弁の製造方法。 ２、特許請求の範囲第１項において弁体が球状であり、
一対の金属製パッキンケース及び弁棒を有することを特
徴とする合成樹脂弁の製造方法。 ３、特許請求の範囲第１項において弁体がバタフライ形
であることを特徴とする合成樹脂弁の製造方法。[Claims] 1. A metal packing case, a packing attached to the inner surface of the case, a valve body, and a valve stem that rotates the valve body, with core metals for forming a flow path installed on both sides of the main part of the valve. A method for manufacturing a synthetic resin valve, comprising the steps of: winding a hot wire around the metal core, and then molding the valve body portion outside the main portion and the winding portion. 2. In claim 1, the valve body is spherical,
A method for manufacturing a synthetic resin valve, comprising a pair of metal packing cases and a valve stem. 3. A method for manufacturing a synthetic resin valve according to claim 1, characterized in that the valve body is butterfly-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30436188A JP2642712B2 (en) | 1988-12-01 | 1988-12-01 | Manufacturing method of synthetic resin valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30436188A JP2642712B2 (en) | 1988-12-01 | 1988-12-01 | Manufacturing method of synthetic resin valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02150580A true JPH02150580A (en) | 1990-06-08 |
| JP2642712B2 JP2642712B2 (en) | 1997-08-20 |
Family
ID=17932095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30436188A Expired - Fee Related JP2642712B2 (en) | 1988-12-01 | 1988-12-01 | Manufacturing method of synthetic resin valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2642712B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07167325A (en) * | 1993-12-14 | 1995-07-04 | Toa Koukiyuu Keishiyu Valve Seizo Kk | Valve and its manufacture |
| CN102679557A (en) * | 2012-05-05 | 2012-09-19 | 王海龙 | Hose connection-free water heater |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101238182B1 (en) * | 2012-08-17 | 2013-02-28 | (주)폴리텍 | Thereof production method and, a body of large caliber synthetic resin valve |
-
1988
- 1988-12-01 JP JP30436188A patent/JP2642712B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07167325A (en) * | 1993-12-14 | 1995-07-04 | Toa Koukiyuu Keishiyu Valve Seizo Kk | Valve and its manufacture |
| CN102679557A (en) * | 2012-05-05 | 2012-09-19 | 王海龙 | Hose connection-free water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2642712B2 (en) | 1997-08-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |