JPH08142188A - Mold for molding tube joint - Google Patents
Mold for molding tube jointInfo
- Publication number
- JPH08142188A JPH08142188A JP28820294A JP28820294A JPH08142188A JP H08142188 A JPH08142188 A JP H08142188A JP 28820294 A JP28820294 A JP 28820294A JP 28820294 A JP28820294 A JP 28820294A JP H08142188 A JPH08142188 A JP H08142188A
- Authority
- JP
- Japan
- Prior art keywords
- diameter
- small
- molded
- molding
- diameter portion
- 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.)
- Pending
Links
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、下水道管、敷地配水
管、水道管などの配管の口径を変更する部分に用いる管
継手を成形するための金型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal mold for molding a pipe joint used for a portion for changing the diameter of a pipe such as a sewer pipe, a site water pipe, and a water pipe.
【０００２】[0002]
【従来の技術】一般に、配管の口径を変更する部分に
は、管継手が使用されている。2. Description of the Related Art Generally, a pipe joint is used in a portion where the diameter of a pipe is changed.
【０００３】前記管継手は、大口径側の配管と接続する
大口径部と、小口径側の配管と接続する小口径部と、前
記大口径部と前記小口径部との間に設けられていて、前
記大口径部と前記小口径部とを連続させているテーパ部
と、で構成されている。The pipe joint is provided between the large diameter portion connected to the large diameter side pipe, the small diameter portion connected to the small diameter side pipe, and the large diameter portion and the small diameter portion. And a taper portion that connects the large diameter portion and the small diameter portion to each other.
【０００４】また、この管継手には、大口径部と小口径
部とが同心のものと、大口径部と小口径部とが偏心した
ものとが生産されており、それぞれ地形などに応じてに
使い分けられている。更に、配管には、円形管や卵形管
など断面形状が異なるものが複数種類あるため、この配
管の断面形状に対応するために、前記管継手にも、大口
径部と小口径部の両方が円形のものや、大口径部と小口
径部の両方が卵形のものや、大口径部と小口径部の一方
が円形で他方が卵形のものなどが生産されている。In addition, as the pipe joint, a large-diameter portion and a small-diameter portion are concentric with each other, and a large-diameter portion and a small-diameter portion are eccentric with each other. Are properly used. Further, since there are multiple types of pipes with different cross-sectional shapes such as circular pipes and oval pipes, in order to correspond to the cross-sectional shape of this pipe, the pipe joint also has both a large diameter portion and a small diameter portion. Are produced, those in which both the large-diameter portion and the small-diameter portion are oval, and those in which one of the large-diameter portion and the small-diameter portion is circular and the other is oval.
【０００５】このように、配管の口径を変更する部分に
用いる管継手の生産状況は、多種少量生産となってい
た。As described above, the pipe joints used in the portion for changing the diameter of the pipe have been produced in various types in small quantities.
【０００６】ところで、従来、上記管継手を成形するた
めの金型としては、例えば、特開平４−３６３２３０号
公報に記載されているような金型が知られている。この
金型は、大口径側の配管と接続する大口径部を成形する
大口径部成形部と、小口径側の配管と接続する小口径部
を成形する小口径部成形部と、前記大口径部成形部品の
外周面と前記小口径部成形部品の外周面とを連続させる
テーパ面を有したテーパ部成形部と、で構成されてお
り、加熱軟化させた熱可塑性樹脂管の端部に小口径部成
形部から大口径部成形部までを押し込み、熱可塑性樹脂
管の端部を拡径することによって管継手を成形するもの
である。By the way, conventionally, as a mold for molding the above-mentioned pipe joint, for example, a mold described in Japanese Patent Laid-Open No. 4-363230 is known. This mold includes a large-diameter part forming part for forming a large-diameter part connected to the large-diameter side pipe, a small-diameter part forming part for forming a small-diameter part connected to the small-diameter side pipe, and the large-diameter part. Part of the molded part and an outer peripheral surface of the small-diameter part molded part, and a tapered part molding part having a tapered surface, and a small portion at the end of the heat-softened thermoplastic resin pipe. The pipe joint is formed by pushing in from the caliber molding part to the large caliber molding part to expand the end portion of the thermoplastic resin pipe.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の管継手成形用金型にあっては、ひとつの金型
で一種類の管継手しか成形することができず、管継手を
多種類生産するためには管継手の種類と同じ数だけ金型
も必要になるので、生産量に対して金型投資が非常に高
くなるという問題があった。However, in such a conventional mold for molding a pipe joint, only one kind of pipe joint can be molded by one mold, and many kinds of pipe joints can be formed. Since the same number of molds as the number of pipe fittings are required for production, there is a problem that the mold investment becomes extremely high with respect to the production amount.
【０００８】そこで、本発明は、上記のような問題に着
目し、低コストで多種類の管継手を成形することができ
る管継手成形用金型を提供することを目的としている。In view of the above problems, an object of the present invention is to provide a metal mold for molding a pipe joint capable of molding various types of pipe joints at low cost.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に、本発明の管継手成形用金型では、口径の異なる配管
同士あるいは口径と断面形状が異なる配管同士を接続す
る管継手成形用金型であって、大口径側の配管と接続す
る大口径部を成形する大口径部成形部品と、小口径側の
配管と接続する小口径部を成形する小口径部成形部品
と、前記大口径部成形部品の外周面と前記小口径部成形
部品の外周面とを連続させるテーパ面を有したテーパ部
成形部品と、前記大口径部成形部品と前記小口径部成形
部品と前記テーパ部成形部品とを連結させる連結部材
と、を備え、前記大口径部成形部品と前記小口径部成形
部品と前記テーパ部成形部品が、それぞれ配管の口径な
らびに断面形状に応じて複数種類設けられている構成と
した。In order to achieve the above object, in the pipe joint molding die of the present invention, a pipe joint molding die for connecting pipes having different diameters or pipes having different diameters and cross-sectional shapes. A large diameter part molded part that molds a large diameter part connected to the large diameter side pipe, a small diameter part molded part that molds a small diameter part connected to the small diameter side pipe, and the large diameter part Taper part molded part having a taper surface for connecting the outer peripheral surface of the part molded part and the outer peripheral surface of the small diameter part molded part, the large diameter part molded part, the small diameter part molded part and the tapered part molded part A connecting member for connecting and, wherein the large-diameter portion molded component, the small-diameter portion molded component, and the taper portion molded component are provided in a plurality of types according to the pipe diameter and cross-sectional shape, respectively. did.
【００１０】[0010]
【作用】本発明の管継手成形用金型で管継手を成形する
場合には、まず、成形しようとする管継手の形状に応じ
て、大口径部成形部品と小口径部成形部品とテーパ部成
形部品をそれぞれ複数種類の中から選択する。そして、
選択した大口径部成形部品と小口径部成形部品とテーパ
部成形部品を、連結部材によって連結させる。その後は
従来と同様に、加熱軟化させた熱可塑性樹脂管の端部に
小口径部成形部品から大口径部成形部品までを押し込
み、熱可塑性樹脂管の端部を拡径することによって管継
手を成形する。When molding a pipe joint with the pipe joint molding die of the present invention, first, according to the shape of the pipe joint to be molded, a large-diameter part molded part, a small-diameter part molded part, and a tapered part are formed. Select each molded part from multiple types. And
The selected large diameter part molded part, small diameter part molded part and taper part molded part are connected by a connecting member. After that, in the same way as before, push the small-diameter part molded part to the large-diameter part molded part into the end of the heat-softened thermoplastic resin pipe, and expand the end of the thermoplastic resin pipe to form a pipe joint. Mold.
【００１１】つまり、本発明の管継手成形用金型では、
大口径部成形部品と小口径部成形部品とテーパ部成形部
品をそれぞれ複数種類の中から選択することができるの
で、大口径部の形状が一致している管継手に対しては、
それらの管継手を成形する際に大口径部成形部品を併用
することができ、小口径部の形状が一致している管継手
に対しては、それらの管継手を成形する際に小口径部成
形部品を併用することができる。That is, in the pipe joint molding die of the present invention,
It is possible to select from multiple types of large diameter part molded parts, small diameter part molded parts and taper part molded parts respectively, so for pipe fittings with the same large diameter part shape,
Large-diameter part molding parts can be used together when molding those pipe fittings, and for pipe fittings whose small-diameter parts have the same shape, small-diameter parts can be used when molding those pipe fittings. Molded parts can be used together.
【００１２】[0012]
【実施例】まず、図１〜図１６に基づいて、本発明実施
例の管継手成形用金型の構成を詳述する。本実施例の管
継手成形用金型は、口径の異なる配管同士あるいは口径
と断面形状が異なる配管同士を接続する管継手成形用金
型であって、大口径側の配管と接続する大口径部を成形
する２種類の大口径部成形部品１ａ、１ｂ（図１ならび
に図２参照）と、小口径側の配管と接続する小口径部を
成形する２種類の小口径部成形部品２ａ，２ｂ（図３な
らびに図４参照）と、前記大口径部成形部品１ａ、１ｂ
の外周面と前記小口径部成形部品２ａ，２ｂの外周面と
を連続させるテーパ面を有した８種類のテーパ部成形部
品３ａ、３ｂ、３ｃ、３ｄ、３ｅ、３ｆ、３ｇ、３ｈ
（図５〜図１２参照）と、前記大口径部成形部品１ａ、
１ｂと前記小口径部成形部品２ａ，２ｂと前記テーパ部
成形部品３ａ、３ｂ、３ｃ、３ｄ、３ｅ、３ｆ、３ｇ、
３ｈを連結させるボルト４（図１４ならびに図１６参
照）と、で構成されている。EXAMPLE First, the construction of a pipe joint molding die of an example of the present invention will be described in detail with reference to FIGS. The pipe joint molding die of the present embodiment is a pipe joint molding die for connecting pipes having different diameters or pipes having different diameters and cross-sectional shapes, and having a large diameter portion connected to the pipe on the large diameter side. 2 kinds of large diameter part molding parts 1a, 1b (see FIGS. 1 and 2) and 2 kinds of small diameter part molding parts 2a, 2b (for molding a small diameter part connected to a small diameter side pipe) 3 and 4) and the large-diameter portion molded parts 1a, 1b.
Eight kinds of taper part molding parts 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h having a taper surface for connecting the outer peripheral surface of the above and the outer peripheral surface of the small diameter part molding parts 2a, 2b to each other.
(See FIGS. 5 to 12) and the large-diameter portion molded part 1a,
1b, the small-diameter part molded parts 2a, 2b, and the tapered part molded parts 3a, 3b, 3c, 3d, 3e, 3f, 3g,
And a bolt 4 (see FIGS. 14 and 16) that connects 3h.
【００１３】前記２種類の大口径部成形部品１ａ、１ｂ
は、共に、一方の端面がベース５に固定されており、他
方の端面には、３つのナット６が上下等間隔に埋め込ま
れている。The above-mentioned two kinds of large-diameter part molded parts 1a, 1b
Both have one end surface fixed to the base 5, and the other end surface is embedded with three nuts 6 at equal vertical intervals.
【００１４】以下、図１ならびに図２に基づいて、前記
大口径部成形部品１ａ、１ｂを種類別に説明すると、図
１に示した大口径部成形部品１ａは、断面形状が円形の
大口径部を成形するように、断面形状が円形に形成され
ており、図２に示した大口径部成形部品１ｂは、断面形
状が卵形の大口径部を成形するように、断面形状が卵形
に形成されている。The large-diameter part molded parts 1a and 1b will be described below by type with reference to FIGS. 1 and 2. The large-diameter part molded part 1a shown in FIG. 1 has a large-diameter part having a circular cross section. 2 is formed into a circular shape, the large-diameter portion molded component 1b shown in FIG. 2 has an oval-shaped cross-sectional shape so as to form a large-diameter portion having an oval cross-sectional shape. Has been formed.
【００１５】前記２種類の小口径部成形部品２ａ，２ｂ
には、それぞれ２つの孔２１が軸方向に貫通して設けら
れている。The above-mentioned two kinds of small-diameter portion molded parts 2a, 2b
Each of the two holes 21 is provided so as to penetrate in the axial direction.
【００１６】以下、図３ならびに図４に基づいて、前記
小口径部成形部品２ａ，２ｂを種類別に説明すると、図
３に示した小口径部成形部品２ａは、断面形状が円形の
小口径部を成形するように、断面形状が円形に形成され
ており、図４に示した小口径部成形部品２ｂは、断面形
状が卵形の小口径部を成形するように、断面形状が卵形
に形成されている。The small-diameter portion molded parts 2a and 2b will be described below by type with reference to FIGS. 3 and 4. The small-diameter portion molded part 2a shown in FIG. 3 has a circular small-diameter portion. The cross-sectional shape is formed in a circular shape so that the small-diameter portion molded component 2b shown in FIG. 4 has an oval cross-sectional shape so as to form a small-diameter portion having an oval cross-sectional shape. Has been formed.
【００１７】前記８種類のテーパ部成形部品３ａ、３
ｂ、３ｃ、３ｄ、３ｅ、３ｆ、３ｇ、３ｈには、それぞ
れ２つの孔３１が軸方向に貫通して設けられている。The above-mentioned eight kinds of tapered part molded parts 3a, 3
Two holes 31 are axially provided in each of b, 3c, 3d, 3e, 3f, 3g, and 3h.
【００１８】以下、図５〜図１２に基づいて、前記テー
パ部成形部品３ａ、３ｂ、３ｃ、３ｄ、３ｅ、３ｆ、３
ｇ，３ｈを種類別に説明する。Hereinafter, based on FIGS. 5 to 12, the taper portion molded parts 3a, 3b, 3c, 3d, 3e, 3f, 3 will be described.
g and 3h will be described by type.
【００１９】まず、図５に示したテーパ部成形部品３ａ
は、前記円形の大口径部成形部品１ａの外周面と前記円
形の小口径部成形部品２ａの外周面とを同心上に連続さ
せるように形成されている。First, the tapered part molding part 3a shown in FIG.
Is formed so that the outer peripheral surface of the circular large-diameter portion molded component 1a and the outer peripheral surface of the circular small-diameter portion molded component 2a are concentrically continuous.
【００２０】また、図６に示したテーパ部成形部品３ｂ
は、前記円形の大口径部成形部品１ａの外周面と前記卵
形の小口径部成形部品２ｂの外周面とを同心上に連続さ
せるように形成されている。Further, the tapered part molding part 3b shown in FIG.
Is formed so that the outer peripheral surface of the circular large-diameter portion molded component 1a and the outer peripheral surface of the oval small-diameter portion molded component 2b are concentrically continuous.
【００２１】また、図７に示したテーパ部成形部品３ｃ
は、前記卵形の大口径部成形部品１ｂの外周面と前記円
形の小口径部成形部品２ａの外周面とを同心上に連続さ
せるように形成されている。Further, the tapered part molding part 3c shown in FIG.
Is formed so that the outer peripheral surface of the oval large-diameter portion molded component 1b and the outer peripheral surface of the circular small-diameter portion molded component 2a are concentrically continuous.
【００２２】また、図８に示したテーパ部成形部品３ｄ
は、前記卵形の大口径部成形部品１ｂの外周面と前記卵
形の小口径部成形部品２ｂの外周面とを同心上に連続さ
せるように形成されている。Further, the tapered portion molded part 3d shown in FIG.
Are formed so that the outer peripheral surface of the egg-shaped large-diameter portion molded component 1b and the outer peripheral surface of the egg-shaped small-diameter portion molded component 2b are concentrically continuous.
【００２３】更に、図９に示したテーパ部成形部品３ｅ
は、前記円形の大口径部成形部品１ａの外周面と前記円
形の小口径部成形部品２ａの外周面とを偏心させて連続
させるように形成されている。Further, the tapered part molding part 3e shown in FIG.
Is formed so that the outer peripheral surface of the circular large-diameter portion molded component 1a and the outer peripheral surface of the circular small-diameter portion molded component 2a are eccentric and continuous.
【００２４】また、図１０に示したテーパ部成形部品３
ｆは、前記円形の大口径部成形部品１ａの外周面と前記
卵形の小口径部成形部品２ｂの外周面とを偏心させて連
続させるように形成されている。Further, the tapered part molding part 3 shown in FIG.
f is formed so that the outer peripheral surface of the circular large-diameter portion molded component 1a and the outer peripheral surface of the oval small-diameter portion molded component 2b are eccentric and continuous.
【００２５】また、図１１に示したテーパ部成形部品３
ｇは、前記卵形の大口径部成形部品１ｂの外周面と前記
円形の小口径部成形部品２ａの外周面とを偏心させて連
続させるように形成されている。Further, the tapered part molding part 3 shown in FIG.
g is formed so that the outer peripheral surface of the oval large-diameter portion molded component 1b and the outer peripheral surface of the circular small-diameter portion molded component 2a are eccentric and continuous.
【００２６】また、図１２に示したテーパ部成形部品３
ｈは、前記卵形の大口径部成形部品１ｂの外周面と前記
卵形の小口径部成形部品２ｂの外周面とを偏心させて連
続させるように形成されている。Further, the tapered part molding part 3 shown in FIG.
The h is formed such that the outer peripheral surface of the egg-shaped large-diameter portion molded component 1b and the outer peripheral surface of the egg-shaped small-diameter portion molded component 2b are eccentric and continuous.
【００２７】次に、図１３〜１６に基づいて、実施例の
作用を説明する。Next, the operation of the embodiment will be described with reference to FIGS.
【００２８】まず、本実施例の管継手成形用金型で管継
手を成形する時の手順について説明する。First, the procedure for molding a pipe joint with the pipe joint molding die of this embodiment will be described.
【００２９】本実施例の金型で管継手を成形する場合に
は、まず、成形しようとする管継手の形状に応じて、２
種類の大口径部成形部品１ａ，１ｂの中からひとつと、
２種類の小口径部成形部品２ａ，２ｂの中からひとつ
と、８種類のテーパ部成形部品３ａ、３ｂ、３ｃ、３
ｄ、３ｅ、３ｆ、３ｇ、３ｈの中からひとつ選択する。When molding a pipe joint with the mold of this embodiment, first, according to the shape of the pipe joint to be molded, 2
One of the large diameter molded parts 1a, 1b,
One of two types of small-diameter part molded parts 2a, 2b, and eight types of tapered part molded parts 3a, 3b, 3c, 3
Select one from d, 3e, 3f, 3g, and 3h.
【００３０】例えば、図１３に示すように、断面形状が
円形の大口径部１０１と、断面形状が円形の小口径部１
０２と、これらを同心上に連続させているテーパ部１０
３とで構成されている管継手１００を成形する場合に
は、図１４に示すように、断面形状が円形に形成されて
いる大口径部成形部品１ａと、断面形状が円形に形成さ
れている小口径部成形部品２ａと、それらの外周面を連
続させるテーパ部成形部品３ａと、を選択する。そし
て、２本のボルト４を、前記小口径部成形部品２ａの孔
２１と前記テーパ部成形部品３ａの孔３１に貫通させる
と共に、前記大口径部成形部品１ａに埋め込まれたナッ
ト６と螺合させることによって、前記大口径部成形部品
１ａと前記小口径部成形部品２ａと前記テーパ部成形部
品３ａを連結させる。その後は従来と同様に、加熱軟化
させた熱可塑性樹脂管Ｐの端部に小口径部成形部品２ａ
から大口径部成形部品１ａまでを押し込み、熱可塑性樹
脂管Ｐの端部を拡径することによって管継手を成形す
る。For example, as shown in FIG. 13, a large diameter portion 101 having a circular sectional shape and a small diameter portion 1 having a circular sectional shape.
02, and the taper part 10 that concentrically connects these
In the case of molding the pipe joint 100 composed of 3 and 3, as shown in FIG. 14, a large-diameter portion molded part 1a having a circular cross-sectional shape and a circular cross-sectional shape. The small-diameter part molded part 2a and the taper part molded part 3a which connects the outer peripheral surfaces thereof are selected. Then, the two bolts 4 are passed through the hole 21 of the small-diameter part molded part 2a and the hole 31 of the tapered part molded part 3a, and screwed with the nut 6 embedded in the large-diameter part molded part 1a. By doing so, the large-diameter part molded part 1a, the small-diameter part molded part 2a, and the tapered part molded part 3a are connected. Thereafter, as in the conventional case, the small-diameter portion molded part 2a is attached to the end of the thermoplastic resin tube P that has been softened by heating.
To the large-diameter portion molded part 1a, and the end portion of the thermoplastic resin pipe P is expanded to form a pipe joint.
【００３１】また、図１５に示すように、断面形状が円
形の大口径部２０１と、断面形状が円形の小口径部２０
２と、これらを偏心させて連続させているテーパ部２０
２とで構成されている管継手２００を成形する場合に
は、図１６に示すように、断面形状が円形に形成されて
いる大口径部成形部品１ａと、断面形状が円形に形成さ
れている小口径部成形部品２ａと、それらの外周面を連
続させるテーパ部成形部品３ｅと、を選択する。後の作
業は、上記の場合と同様であるが、ボルト４を螺合させ
るナット６の位置が上記の場合と異なってくる。Further, as shown in FIG. 15, a large diameter portion 201 having a circular sectional shape and a small diameter portion 20 having a circular sectional shape.
2 and a taper portion 20 that is eccentric and continuous.
In the case of molding the pipe joint 200 constituted by 2, the large-diameter portion molded part 1a having a circular cross-sectional shape and the cross-sectional shape being circular, as shown in FIG. The small-diameter part molded part 2a and the taper part molded part 3e whose outer peripheral surfaces are continuous are selected. The subsequent work is similar to the above case, but the position of the nut 6 for screwing the bolt 4 is different from that in the above case.
【００３２】以下、表１に、大口径部成形部品１ａ，１
ｂと小口径部成形部品２ａ，２ｂとテーパ部成形部品３
ａ、３ｂ、３ｃ、３ｄ、３ｅ、３ｆ、３ｇ、３ｈの中か
ら選択して組み合わせることができる全ての組み合わせ
を示す。つまり、本実施例の金型では、８種類の管継手
を製造することができる。Table 1 below shows large-diameter part molded parts 1a, 1
b, small-diameter part molded parts 2a, 2b, and tapered part molded part 3
All combinations that can be selected and combined from a, 3b, 3c, 3d, 3e, 3f, 3g, 3h are shown. That is, with the mold of this embodiment, eight types of pipe joints can be manufactured.
【００３３】[0033]
【表１】 [Table 1]
【００３４】次に、大口径部成形部品１ａ，２ｂの変形
例１，２，３を説明する。なお、変形例１，２，３を説
明するにあたり、大口径部成形部品１ａ，２ｂと同一の
構成については、大口径部成形部品１ａ，２ｂの場合と
図面に符号を付して説明を省略する。Next, modified examples 1, 2, and 3 of the large-diameter portion molded parts 1a and 2b will be described. In describing the modified examples 1, 2, and 3, the same configurations as those of the large-diameter portion molded parts 1a and 2b are denoted by reference numerals in the drawings and the case of the large-diameter portion molded parts 1a and 2b, and the description thereof will be omitted. To do.
【００３５】まず、図１７ならびに図１８に基づいて、
変形例１を説明する。First, based on FIG. 17 and FIG.
Modification 1 will be described.
【００３６】変形例１の大口径部成形部品１ｃ，１ｄ
は、内径が先端側に向けて拡径した大口径部を成形する
もので、外周面にテーパθが設けられている。Large-diameter portion molded parts 1c and 1d of the modified example 1
Is for forming a large-diameter portion whose inner diameter expands toward the tip side and has a taper θ on the outer peripheral surface.
【００３７】次に、図１９〜図２２に基づいて、変形例
２を説明する。Next, a second modification will be described with reference to FIGS.
【００３８】変形例２の大口径部成形部品１ｅ，１ｆ
は、内周面にゴム輪装着用溝を有する大口径部を成形す
るもので、外周部に拡縮可能な入り子１１が設けられて
いる。なお、前記入り子１１の詳細な構成は、例えば、
特開平５−２６１８１３号公報によって公知であるの
で、説明を省略する。Large-diameter portion molded parts 1e and 1f of modification 2
Is for molding a large-diameter portion having a rubber ring mounting groove on its inner peripheral surface, and is provided with an expandable / retractable insert 11 on its outer peripheral portion. The detailed configuration of the nest 11 is, for example,
Since it is known from Japanese Patent Laid-Open No. Hei 5-261813, its explanation is omitted.
【００３９】前記大口径部成形部品１ｅ，１ｆを用いて
管継手を成形する場合には、図２１ならびに図２２に示
すように（図２１ならびに図２２は、大口径部成形部品
１ｅを用いた場合を示している）、加熱軟化させた熱可
塑性樹脂管Ｐの端部に大口径部成形部品１ｅ，１ｆを押
し込んだ後、熱可塑性樹脂管Ｐのゴム輪装着用溝を形成
する部分を再度局部加熱し、その外側に一対の割り型７
１，７１から成る外型７を装着する。なお、前記外型７
には、ゴム輪装着用溝を成形するための溝７２が設けら
れている。その後、大口径部成形部品１ｅ，１ｆの入り
子１１を拡径させる。そうすると、熱可塑性樹脂管Ｐの
一部が入り子１１によって外側に押し出されて外型７の
溝７２に密着し、ゴム輪装着用溝が形成される。When molding a pipe joint using the large-diameter part molded parts 1e and 1f, as shown in FIGS. 21 and 22, (in FIGS. 21 and 22, the large-diameter part molded part 1e was used. (The case is shown), after pushing the large-diameter part 1e, 1f into the end of the thermoplastic resin pipe P that has been softened by heating, the portion of the thermoplastic resin pipe P where the rubber ring mounting groove is formed is again formed. Local heating and a pair of split molds 7 on the outside
An outer mold 7 composed of 1,71 is mounted. The outer mold 7
A groove 72 for forming a rubber ring mounting groove is provided in the. After that, the diameter of the insert 11 of the large-diameter portion molded part 1e, 1f is expanded. Then, a part of the thermoplastic resin pipe P is pushed outward by the insert 11 and comes into close contact with the groove 72 of the outer mold 7, and a rubber ring mounting groove is formed.
【００４０】次に、図２３〜図２５に基づいて、変形例
３について説明する。Next, a third modification will be described with reference to FIGS.
【００４１】変形例３の大口径部成形部品１ｇ，１ｈ
は、内周面にゴム輪装着用溝を有する大口径部を成形す
るもので、断面半円状の溝１２が外周部に形成されてお
り、この溝１２に、圧縮空気の吹出口１３が周方向一定
の間隔置きに複数設けられている。なお、前記圧縮空気
は、大口径部成形部品１ｇ，１ｈに接続されている管８
のバルブ８１を開くことによって前記吹出口１３から吹
き出させることができるようになっている。Large-diameter portion molded parts 1g and 1h of modification 3
Is for molding a large-diameter portion having a rubber ring mounting groove on the inner peripheral surface, and a groove 12 having a semicircular cross section is formed on the outer peripheral portion, and a compressed air outlet 13 is formed in this groove 12. A plurality of them are provided at regular intervals in the circumferential direction. In addition, the compressed air is supplied to the pipes 8 connected to the large-diameter portion molded parts 1g and 1h.
By opening the valve 81, the air can be blown out from the air outlet 13.
【００４２】前記大口径部成形部品１ｇ，１ｈを用いて
管継手を成形する時には、図２５に示すように（図２５
は、大口径部成形部品１ｇを用いた場合を示してい
る）、熱可塑性樹脂管Ｐの端部に大口径部成形部品１
ｇ，１ｈをを挿入させた後、ゴム輪装着用溝を形成する
部分を再度局部加熱し、その外側に前記外型７を装着す
る。そして、前記大口径部成形部品１ｇ，１ｈをの吹出
口１３から圧縮空気を吹き出させる。そうすると、大口
径部成形部品１ｇ，１ｈをの溝１２と熱可塑性樹脂管Ｐ
との間の内圧が高まって熱可塑性樹脂管Ｐの一部が外側
に押し出されて外型７の溝７２に密着し、ゴム輪装着用
溝が形成される。When molding a pipe joint using the large-diameter portion molded parts 1g and 1h, as shown in FIG.
Shows the case where the large diameter part molded part 1g is used), and the large diameter part molded part 1 is attached to the end of the thermoplastic resin pipe P.
After inserting g and 1h, the portion forming the rubber ring mounting groove is locally heated again, and the outer mold 7 is mounted on the outside thereof. Then, compressed air is blown out from the blowout port 13 of the large-diameter portion molded parts 1g, 1h. Then, the groove 12 and the thermoplastic resin pipe P of the large-diameter portion molded parts 1g and 1h are formed.
The internal pressure between and increases, and a part of the thermoplastic resin pipe P is extruded to the outer mold 7 so as to come into close contact with the groove 72 of the outer mold 7 to form a rubber ring mounting groove.
【００４３】以上、本発明の実施例を図面により詳述し
てきたが、具体的な構成はこの実施例に限られるもので
はなく、本発明の要旨を逸脱しない範囲における設計の
変更等があっても本発明に含まれる。例えば、実施例で
は、２種類の大口径部成形部品と、２種類の小口径部成
形部品と、８種類のテーパ部成形部品とボルトを備えた
金型を示したが、各成形部品の種類は、必要に応じて増
減させてもよい。Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific structure is not limited to this embodiment, and there are design changes and the like within the scope not departing from the gist of the present invention. Also included in the present invention. For example, in the embodiment, a mold provided with two kinds of large diameter part molded parts, two kinds of small diameter part molded parts, eight kinds of taper part molded parts and bolts is shown. May be increased or decreased as necessary.
【００４４】[0044]
【発明の効果】以上説明したように、本発明の管継手成
形用金型にあっては、大口径部の形状が一致している管
継手に対しては、それらの管継手を成形する際に大口径
部成形部品を併用することができ、小口径部の形状が一
致している管継手に対しては、それらの管継手を成形す
る際に小口径部成形部品を併用することができるので、
管継手の種類に対して大口径部成形部品と小口径部成形
部品の種類を少なくすることができ、よって、低コスト
で多種類の管継手を生産することができるという効果が
得られる。As described above, in the pipe joint molding die of the present invention, when the pipe joints having a large diameter portion having the same shape are formed, Can be used together with the large-diameter part, and for pipe fittings in which the shapes of the small-diameter parts are the same, the small-diameter part can be used together when molding those pipe fittings. So
It is possible to reduce the types of the large-diameter part molded parts and the small-diameter part molded parts with respect to the types of the pipe joints, and thus it is possible to obtain an effect that many types of pipe joints can be produced at low cost.
【図１】大口径部成形部品を示す（ｉ）左側面図ならび
に（ii）正面図である。FIG. 1 is (i) a left side view and (ii) a front view showing a large-diameter portion molded part.
【図２】大口径部成形部品を示す（ｉ）左側面図ならび
に（ii）正面図である。FIG. 2 is (i) a left side view and (ii) a front view showing a large-diameter portion molded part.
【図３】小口径部成形部品を示す（ｉ）正面図ならびに
（ii）右側面図である。FIG. 3 is (i) a front view and (ii) a right side view showing a small-diameter portion molded part.
【図４】小口径部成形部品を示す（ｉ）正面図ならびに
（ii）右側面図である。FIG. 4 is (i) a front view and (ii) a right side view showing a small-diameter portion molded part.
【図５】テーパ部成形部品を示す（ｉ）正面図ならびに
（ii）右側面図である。5 (a) is a front view and FIG. 5 (ii) is a right side view showing a tapered part molded part.
【図６】テーパ部成形部品を示す（ｉ）正面図ならびに
（ii）右側面図である。FIG. 6 is (i) a front view and (ii) a right side view showing a tapered part molded part.
【図７】テーパ部成形部品を示す（ｉ）正面図ならびに
（ii）右側面図である。FIG. 7 is (i) a front view and (ii) a right side view showing a tapered part molded part.
【図８】テーパ部成形部品を示す（ｉ）正面図ならびに
（ii）右側面図である。FIG. 8 is (i) a front view and (ii) a right side view showing a tapered part molded part.
【図９】テーパ部成形部品を示す（ｉ）正面図ならびに
（ii）右側面図である。9 (a) is a front view and FIG. 9 (ii) is a right side view showing a tapered part molded part.
【図１０】テーパ部成形部品を示す（ｉ）正面図ならび
に（ii）右側面図である。FIG. 10 is (i) a front view and (ii) a right side view showing a tapered part molded part.
【図１１】テーパ部成形部品を示す（ｉ）正面図ならび
に（ii）右側面図である。FIG. 11 is (i) a front view and (ii) a right side view showing a tapered part molded part.
【図１２】テーパ部成形部品を示す（ｉ）正面図ならび
に（ii）右側面図である。FIG. 12 is (i) a front view and (ii) a right side view showing a tapered part molded part.
【図１３】管継手を示す正面図である。FIG. 13 is a front view showing a pipe joint.
【図１４】実施例の管継手成形用金型の組み合わせ例を
示す正面図である。FIG. 14 is a front view showing an example of a combination of pipe fitting molding dies of the embodiment.
【図１５】管継手を示す正面図である。FIG. 15 is a front view showing a pipe joint.
【図１６】実施例の管継手成形用金型の組み合わせ例を
示す正面図である。FIG. 16 is a front view showing an example of a combination of pipe fitting molding dies according to the embodiment.
【図１７】大口径部成形部品の変形例１を示す正面図で
ある。FIG. 17 is a front view showing a modified example 1 of the large-diameter part molded part.
【図１８】大口径部成形部品の変形例１を示す正面図で
ある。FIG. 18 is a front view showing a modified example 1 of the large-diameter part molded part.
【図１９】大口径部成形部品の変形例１を示す正面図で
ある。FIG. 19 is a front view showing a modified example 1 of the large-diameter part molded part.
【図２０】大口径部成形部品の変形例１を示す正面図で
ある。FIG. 20 is a front view showing a modified example 1 of the large-diameter part molded part.
【図２１】変形例２の使用状態を示す正面図である。FIG. 21 is a front view showing a usage state of Modification 2;
【図２２】図２１のXXII−XXII断面図である。22 is a sectional view taken along line XXII-XXII of FIG. 21.
【図２３】大口径部成形部品の変形例３を示す正面図で
ある。FIG. 23 is a front view showing Modification Example 3 of the large-diameter part molded part.
【図２４】大口径部成形部品の変形例３を示す正面図で
ある。FIG. 24 is a front view showing Modification Example 3 of the large-diameter part molded part.
【図２５】変形例３の使用状態を示す正面図である。FIG. 25 is a front view showing a usage state of Modification 3;
１ａ，１ｂ 大口径部成形部品 ２ａ，２ｂ 小口径部成形部品 ３ａ，３ｂ，３ｃ，３ｄ，３ｅ，３ｆ，３ｇ，３ｈ テ
ーパ部成形部品 ４ ボルト（連結部材）1a, 1b Large-diameter part molded part 2a, 2b Small-diameter part molded part 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h Tapered part molded part 4 Bolt (connecting member)
Claims (1)
面形状が異なる配管同士を接続する管継手成形用金型で
あって、 大口径側の配管と接続する大口径部を成形する大口径部
成形部品と、小口径側の配管と接続する小口径部を成形
する小口径部成形部品と、前記大口径部成形部品の外周
面と前記小口径部成形部品の外周面とを連続させるテー
パ面を有したテーパ部成形部品と、前記大口径部成形部
品と前記小口径部成形部品と前記テーパ部成形部品とを
連結させる連結部材と、を備え、前記大口径部成形部品
と前記小口径部成形部品と前記テーパ部成形部品が、そ
れぞれ配管の口径ならびに断面形状に応じて複数種類設
けられていることを特徴とする管継手成形用金型。1. A pipe joint molding die for connecting pipes having different diameters or pipes having different diameters and cross-sectional shapes, and molding a large diameter portion for forming a large diameter portion connected to a pipe on the large diameter side. Parts, a small-diameter part molded part that molds a small-diameter part connected to the small-diameter side pipe, and a tapered surface that connects the outer peripheral surface of the large-diameter part molded part and the outer peripheral surface of the small-diameter part molded part to each other. A taper portion molded part having a connecting member for connecting the large diameter portion molded component, the small diameter portion molded component and the tapered portion molded component, and the large diameter portion molded component and the small diameter portion molded component A pipe joint molding die, wherein a plurality of types of parts and the tapered part molded parts are provided in accordance with the diameter and cross-sectional shape of the pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28820294A JPH08142188A (en) | 1994-11-22 | 1994-11-22 | Mold for molding tube joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28820294A JPH08142188A (en) | 1994-11-22 | 1994-11-22 | Mold for molding tube joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08142188A true JPH08142188A (en) | 1996-06-04 |
Family
ID=17727143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28820294A Pending JPH08142188A (en) | 1994-11-22 | 1994-11-22 | Mold for molding tube joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08142188A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111002571A (en) * | 2019-12-13 | 2020-04-14 | 邓权塑业科技（湖南）有限公司 | PVC pipe temperature control flaring equipment and method thereof |
| CN114222602A (en) * | 2019-08-13 | 2022-03-22 | 美敦力瓦斯科尔勒公司 | Improved device of conduit |
-
1994
- 1994-11-22 JP JP28820294A patent/JPH08142188A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114222602A (en) * | 2019-08-13 | 2022-03-22 | 美敦力瓦斯科尔勒公司 | Improved device of conduit |
| CN111002571A (en) * | 2019-12-13 | 2020-04-14 | 邓权塑业科技（湖南）有限公司 | PVC pipe temperature control flaring equipment and method thereof |
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