JP2003089148A - Simple blow molding machine - Google Patents
Simple blow molding machineInfo
- Publication number
- JP2003089148A JP2003089148A JP2001283371A JP2001283371A JP2003089148A JP 2003089148 A JP2003089148 A JP 2003089148A JP 2001283371 A JP2001283371 A JP 2001283371A JP 2001283371 A JP2001283371 A JP 2001283371A JP 2003089148 A JP2003089148 A JP 2003089148A
- Authority
- JP
- Japan
- Prior art keywords
- blow molding
- pipe
- mold
- pressure
- pressure blow
- 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
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば、受口付熱
可塑性曲管の成形装置に関し、殊に、受口付熱可塑性曲
管等の簡易型ブロ−成形装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a molding device for a thermoplastic curved pipe with a socket, and more particularly to a simple blow molding device for a thermoplastic curved pipe with a socket.
【０００２】[0002]
【従来の技術】例えば、スリ−ブ付熱可塑性曲管の成形
は、プラスチックの２次加工に属し、殊に、伸延を伴わ
ない熱加工に属する。2. Description of the Related Art For example, the molding of a sleeved thermoplastic bent tube belongs to the secondary processing of plastics, and in particular to the thermal processing without distraction.
【０００３】かかる成形は従来において、素材管の外周
部分を加熱軟化させ、管径を変化させないため、砂等の
中子を充填し、強制屈曲力を加えて曲げる方法がとられ
ている。この場合、治具を併用しても、作業者が２〜３
名必要とし、しかも、曲管部分の成形加工の後、両スリ
−ブの成形が行われる。Conventionally, such forming is carried out by heating and softening the outer peripheral portion of the raw material tube so as not to change the diameter of the material tube. Therefore, a core is filled with sand or the like and bent by applying a forcible bending force. In this case, even if a jig is used together, the operator will be 2-3
Both sleeves are formed after the bending of the curved pipe portion.
【０００４】かかる手作業による成形の場合、曲管の径
が大きくなれば、強制屈曲力に多大の力を必要とし、し
かも、素材管の加熱は油俗によることから、油の蒸気の
悪臭や火傷の危険性があるなど、苛酷な作業環境となっ
ている。In the case of such manual molding, if the diameter of the curved pipe becomes large, a great amount of force is required for the forcible bending force, and since the heating of the raw material pipe is done by oil, the odor of oil vapor is The working environment is harsh, including the risk of burns.
【０００５】そこで、本出願人は、特公平４−７０９７
８号公報により、次のようなスリ−ブ付熱可塑性曲管の
成形装置について提案を行い、これらの問題を完全に一
掃して作業現場の改善を行っている。Therefore, the applicant of the present invention has filed Japanese Patent Publication No. 4-7097.
No. 8 publication proposes the following molding device for a thermoplastic pipe with a sleeve, and completely eliminates these problems to improve the work site.
【０００６】すなわち、両スリ−ブ部分と、素材管（塩
ビ原管ともいう）外径に略同一径の曲管部分とが形成さ
れた分割可能の金型、および、該素材管の両端部へ圧入
しスリ−ブを形成するコア型、からなるスリ−ブ付熱可
塑性曲管の成形装置において、前記コア型のいずれか一
方に、該コア型の後退状態で素材管の端部を装着可能と
し、該コア型の前進により、該素材管を、閉じられた状
態の前記金型に押込むよう構成すると共に、前記コア型
に該素材管内へ拡管成形を行わない程度の圧力の加圧流
体を供給する孔を穿設し、該加圧流体により該素材管の
腹部に生じる皺等を延ばすことを特徴とするスリ−ブ付
熱可塑性曲管の成形装置を提案した。That is, a dividable mold having both sleeve portions and a curved pipe portion having substantially the same diameter on the outer diameter of the raw material pipe (also called PVC raw pipe), and both end portions of the raw material pipe. In a molding apparatus for a thermoplastic curved pipe with a sleeve, which comprises a core mold that is press-fitted into a sleeve to form a sleeve, one end of the core mold is attached to one of the core molds in a retracted state. It is made possible to push the material pipe into the mold in a closed state by advancing the core mold, and pressurize the core mold to a pressure that does not expand the material pipe into the material pipe. A device for forming a thermoplastic curved pipe with a sleeve has been proposed, which is characterized in that a hole for supplying a fluid is bored and wrinkles and the like generated in the abdomen of the raw material pipe are extended by the pressurized fluid.
【０００７】[0007]
【発明が解決しようとする課題】ところが、その後、か
かる塩ビ製のスリ−ブ両受曲管の商品の要請の他、この
種の成形装置によるゴム輪受口片受曲管の商品の要請が
高まり、そのため、これを、かかるスリ−ブ付熱可塑性
曲管の成形装置を用いて成形しようとすると、次のよう
な問題のあることが判明した。However, after that, in addition to the request for the product of the PVC sleeve-shaped double curved pipe, there is also a request for the product of the rubber ring socket single curved pipe by this type of molding device. Therefore, when it is attempted to mold it using such a molding device for a thermoplastic pipe with a sleeve, it has been found that the following problems occur.
【０００８】前記成形装置におけるスリ−ブを成形する
コア型では、ゴム輪受口を成形するには困難で、そのた
め、曲管部およびゴム輪受口部を同時にブロ−成形する
だけの拡管成形用圧力（例えば１０〜１２ｋｇ／ｃ
ｍ 2）の流体を用いると、前記金型では剛性不測とな
る。With the core mold for molding the sleeve in the above-mentioned molding apparatus, it is difficult to mold the rubber ring receiving port. Therefore, the tube expansion molding in which only the curved pipe portion and the rubber ring receiving port are blow molded at the same time. Working pressure (eg 10-12kg / c
If the fluid of m 2 ) is used, the rigidity of the mold becomes unpredictable.
【０００９】そのため、かかる拡管成形（ブロ−成形）
に耐える剛性のある金型にすると、必要以上の大がかり
な装置、すなわち、曲管部用金型は単なる皺延ばし圧力
（例えば２ｋｇ／ｃｍ 2）に耐えるものでよいにも拘わ
らず、拡管成形に耐える剛性の金型を用いることにな
り、大がかりな装置になる。Therefore, such tube expansion molding (blow molding)
If the mold is rigid enough to withstand, it is not necessary for expansion molding, even though a large-scale device more than necessary, that is, the mold for the curved pipe part, can withstand a simple wrinkle-rolling pressure (for example, 2 kg / cm 2 ). A metal mold with a rigidity that can withstand is used, which results in a large-scale device.
【００１０】そこで本発明者らは、本出願人が既に提案
（特許第３０２７７５３号公報参照）し、各種の塩ビ原
管のブロ−成形に貢献している技術を、この成形装置に
適用することに着想して本発明が完成された。Therefore, the inventors of the present invention should apply to this molding apparatus the technology that the present applicant has already proposed (see Japanese Patent No. 3027753) and contributes to the blow molding of various PVC raw pipes. The present invention has been completed based on the idea.
【００１１】すなわち、本発明は前記問題を解決するこ
とを主たる目的とし、ゴム輪受口のブロ−成形は勿論、
他の受口（例えばＴＳ接合受口）も高い精度で成形する
ことを副たる目的とする。That is, the present invention is mainly aimed at solving the above-mentioned problems, and it goes without saying that blow molding of the rubber ring receiving port is of course required.
The other purpose is to mold the other receiving port (for example, TS bonding receiving port) with high accuracy.
【００１２】[0012]
【課題を解決するための手段】かかる目的を達成するた
め、本発明は、１）複雑形状のキャビティをもった小室
の高圧形ブロ−成形金型と、単純形状であって若干の伸
延量とするキャビティをもった低圧形ブロ−成形金型と
を一体的に連設し、これらの金型に１本の加熱軟化した
熱可塑性合成樹脂原管を収容し、前記高圧形ブロ−成形
金型に高圧を、低圧形ブロ−成形金型に低圧を、それぞ
れ略同時に供給して各ブロ−成形する装置であって、前
記高圧形ブロ−成形金型に袋状弾性皮体を挿入して、該
袋状弾性皮体に前記原管の一端側をフリ−の状態で外嵌
して、該袋状弾性皮体内に高圧を供給してブロ−成形す
ることにより、低圧形ブロ−成形金型を簡素にしたこと
を特徴とする簡易型ブロ−成形装置にあり、また、２）
前記高圧形ブロ−成形金型を受口部を成形するキャビテ
ィとし、低圧形ブロ−成形金型を曲管部を成形するキャ
ビティとして、受口付熱可塑性合成樹脂曲管を成形する
請求項１に記載の簡易型ブロ−成形装置を要旨とする。In order to achieve the above object, the present invention provides 1) a high-pressure blow molding die for a small chamber having a cavity having a complicated shape, and a simple shape with a slight amount of extension. A low-pressure blow molding die having a cavity to be integrally connected, and one of these heat-softened thermoplastic synthetic resin raw pipes is housed in these molds, and the high-pressure blow molding die A high pressure, low pressure to the low pressure blow molding die, respectively, is a device for each blow molding substantially simultaneously, by inserting a bag-shaped elastic skin into the high pressure blow molding die, A low-pressure blow molding die is obtained by externally fitting one end side of the original pipe to the bag-shaped elastic skin in a free state and supplying high pressure into the bag-shaped elastic skin to perform blow molding. It is a simple blow molding device characterized by simplifying
A thermoplastic synthetic resin curved pipe with a receptacle is molded by using the high-pressure blow molding die as a cavity for molding a receiving portion and the low-pressure blow molding die as a cavity for molding a curved pipe portion. The simple blow molding device described in 1.
【００１３】[0013]
【発明の実施の形態】本発明を添付図面に示す実施例に
より詳細に述べる。The present invention will be described in detail with reference to the embodiments shown in the accompanying drawings.
【００１４】図１は本発明の実施例の全体模式図、図２
は図１のＡ部拡大図、図３は図１により成形されたゴム
輪受口片受曲管の一部断面省略全体図を示す。FIG. 1 is an overall schematic view of an embodiment of the present invention, FIG.
1 is an enlarged view of a portion A of FIG. 1, and FIG. 3 is an overall view of the rubber ring receiving piece bending pipe molded according to FIG.
【００１５】本発明の実施例のゴム輪等受口片受（両受
でも可）曲管の成形装置１は、簡易型と呼ばれ、きわめ
て構造簡素に構成しており、通常の塩ビ製ゴム輪受口片
受曲管は勿論、例えば、呼び径１００ｍｍφ〜３５０ｍ
ｍφの電線管用耐衝撃性硬質塩ビ製（通常Ｈｉ塩ビ管と
呼ばれ、通常のものに比べ、常温で２０〜３０倍の衝撃
に耐えられ、低温で４〜６倍の衝撃に耐えられるものを
いう）ゴム輪受口片受曲管（曲率１．５ｍ〜１０ｍ）を
成形するのに好適な成形装置である。The molding device 1 for a rubber pipe such as a rubber ring according to the embodiment of the present invention, which is a single-ended receiving pipe (both double receiving is also possible), is called a simple type and has an extremely simple structure. Needless to say, the ring receiving piece curved pipe, for example, a nominal diameter of 100 mmφ to 350 m
Made of impact-resistant hard PVC for mφ conduit (usually called Hi-PVC pipe, which can withstand 20-30 times more shock at normal temperature and 4-6 times more shock at low temperature than ordinary ones. This is a molding device suitable for molding a rubber ring receiving piece curved pipe (curvature: 1.5 m to 10 m).
【００１６】先ず、本実施例のブロ−成形に用いる成形
装置１について述べる。First, the molding apparatus 1 used in the blow molding of this embodiment will be described.
【００１７】この成形装置１の、上下または左右２つ割
の割り型状金型２は、低圧用の曲管部用金型３と高圧用
の受口部用金型４とから簡素に一体的に連設して、図３
で示すゴム輪受口片受曲管６をブロ−成形する。The upper and lower or right and left split mold dies 2 of this molding apparatus 1 are simply integrated into a low pressure bent pipe mold 3 and a high pressure inlet mold 4. Figure 3
Blow molding of the rubber ring receiving piece curved receiving tube 6 shown in FIG.
【００１８】この曲管部用金型３では、加熱（例えば通
常の１２０〜１３０℃より高めの１５０℃）軟化した塩
ビ原管７を、この曲管部用金型３に若干の力で押込み挿
入すると、所定の曲率で弯曲されて、その腹部に皺が生
じたり、断面形状が楕円等偏平状になる。In this curved pipe part mold 3, the PVC raw pipe 7 that has been softened by heating (for example, 150 ° C. higher than the usual 120 to 130 ° C.) is pushed into this curved pipe part mold 3 with a slight force. When it is inserted, it is bent with a predetermined curvature, and wrinkles are formed in its abdomen, or its cross-sectional shape becomes a flat shape such as an ellipse.
【００１９】したがって、この金型３は、これらを修正
して真円度を確保するだけの剛性、、すなわち、若干の
伸延量を行わす低圧のブロ−成形圧力（例えば２ｋｇ／
ｃｍ 2）に耐えられる剛性をもつ曲管部用金型３に構成
している。例えば、アルミ製の単純な金型で構成してい
る。Therefore, this mold 3 corrects these.
Rigidity to ensure roundness, that is,
Low blow molding pressure (eg 2 kg /
cm 2) Constructed in a curved tube mold 3 with a rigidity that can withstand
is doing. For example, a simple mold made of aluminum
It
【００２０】したがって、この曲管部用金型３は安価に
製作でき、殊に、同一呼び径の曲管、つまり、受口部は
同一にしても、その曲率は複数の種類（例えば背渡し寸
法２ｍ〜５ｍを一定にしても、曲率は１．５ｍ、３．０
ｍ、５．０ｍ、１０．０ｍの種類）を必要とするので、
これらの金型を揃えても、安価に構成することができ
る。Therefore, the bending pipe die 3 can be manufactured at a low cost, and in particular, even if the bending pipe having the same nominal diameter, that is, the receiving portion is the same, its curvature has a plurality of types (for example, back-to-back transfer). Even if the dimension 2m to 5m is fixed, the curvature is 1.5m, 3.0
m, 5.0 m, 10.0 m) are required,
Even if these molds are prepared, it can be constructed at low cost.
【００２１】また、受口部用金型４のキャビティは、そ
のゴム輪受口５の形状がリップ付シ−ルリング溝８′や
受口ストッパ−９′をもつ比較的複雑な形状をしてお
り、しかも、受口長さは短寸（例えば約１５ｃｍ）、ひ
いては、この金型４は小室であるので、所定（通常）の
ブロ−成形用圧力（例えば１０〜１２ｋｇ／ｃｍ 2）で
もって塩ビ原管７を拡管成形する必要上、剛性をもたせ
てはいるが、小室故、可及的に簡素にできる。In the cavity of the die 4 for the receiving portion, the shape of the rubber ring receiving opening 5 is a relatively complicated shape having a seal ring groove 8'with a lip and a receiving stopper 9 '. In addition, the socket length is short (for example, about 15 cm), and since the mold 4 is a small chamber, it is possible to use a predetermined (normal) blow molding pressure (for example, 10 to 12 kg / cm 2 ). Although it is provided with rigidity because it is necessary to expand the raw PVC pipe 7, it can be made as simple as possible because it is a small chamber.
【００２２】以上のように、曲管部用金型３と受口部用
金型４には、ブロ−成形圧力を異にする流体圧（例えば
常温加圧空気または油圧）を成形サイクル短縮化のた
め、また、加熱軟化した塩ビ原管７の成形性のため、略
同時に供給することから、両加圧を隔絶する必要があ
る。As described above, a fluid pressure (for example, normal temperature pressurized air or hydraulic pressure) having different blow molding pressures is shortened in the bending pipe mold 3 and the receiving mold 4 to shorten the molding cycle. For this reason, and because of the moldability of the vinyl chloride original tube 7 that has been softened by heating, it is necessary to isolate both pressurizations because they are supplied almost simultaneously.
【００２３】そのため、受口部用金型４には、前掲の特
許第３０２７７５３号公報図２で示す先端絞り円筒の袋
状弾性皮体（つまりゴムチュ−ブ）１０を内蔵し、この
袋内部に、前記の高圧のブロ−成形用圧力を供給するこ
とにより、両加圧を隔絶して両金型を併用することがで
きる。For this reason, the receptacle die 4 incorporates a bag-shaped elastic leather body (that is, a rubber tube) 10 having a cylindrical tip end as shown in FIG. 2 of the above-mentioned Japanese Patent No. 3027753. By supplying the above-mentioned high blow molding pressure, both pressurizations can be isolated and both molds can be used together.
【００２４】この袋状弾性皮体１０の先端絞りのため、
その先端側に厚肉の円錐台状のゴムチュ−ブ押え１１を
設けている。このゴムチュ−ブ押え１１の最大径は、成
形されたゴム輪受口片受曲管６の内径より若干２〜３ｍ
ｍ小径にすると、ブロ−成形上好都合であった。Due to the squeezing of the tip of the bag-shaped elastic body 10,
A thick circular truncated cone-shaped rubber tube retainer 11 is provided on the tip side. The maximum diameter of the rubber tube retainer 11 is slightly 2 to 3 m from the inner diameter of the molded rubber ring receiving piece bending pipe 6.
A smaller m diameter was convenient for blow molding.
【００２５】そして、前記曲管部用金型３の外端（反受
口部用金型４）には原管押込用エアシリンダ−１３を配
置し、塩ビ原管７の押込みと共に、曲管部用金型３の外
端を閉塞板１４で閉塞するようにしている。An air cylinder 13 for pushing the raw pipe is arranged at the outer end of the die 3 for the bent pipe portion (the die 4 for the anti-reception portion), and the PVC pipe 7 is pushed in and the bent pipe is pushed. The outer end of the part mold 3 is closed by a closing plate 14.
【００２６】したがって、この原管押込用エアシリンダ
−１３は、少なくとも前記低圧の２ｋｇ／ｃｍ2 の圧力
に対抗する低圧シリンダ−を用いる。Therefore, as the air cylinder 13 for pushing the raw material pipe, a low pressure cylinder which opposes at least the low pressure of 2 kg / cm 2 is used.
【００２７】また、受口部用金型４の外端（反曲管部用
金型３）には、ゴムチュ−ブ押込用エアシリンダ−１５
を配置し、袋状弾性皮体１０を、受口部用金型４内に挿
入した塩ビ原管７の管端側へ挿入すると共に、受口部用
金型４の外端を閉塞するようにしている。An air cylinder 15 for pushing the rubber tube is attached to the outer end of the die 4 for the receiving portion (the die 3 for the inflection tube portion).
And the bag-shaped elastic skin 10 is inserted into the pipe end side of the PVC original pipe 7 inserted into the receiving part mold 4 and the outer end of the receiving part mold 4 is closed. I have to.
【００２８】したがって、このゴムチュ−ブ押込用エア
シリンダ−１５は、少なくとも、前記高圧の１２ｋｇ／
ｃｍ2 の圧力に対抗する高圧シリンダ−を用いる。その
ため、このゴムチュ−ブ押込用エアシリンダ−１５に
は、取付基板１６で支持され、かつ、シリンダ−ロッド
１７を挟んだ１対のタイロッド１８，１８や調節ナット
１９を設けている。Therefore, this air cylinder 15 for pushing in the rubber tube has at least the high pressure of 12 kg /
A high pressure cylinder is used which opposes a pressure of cm 2 . Therefore, the rubber tube pushing air cylinder 15 is provided with a pair of tie rods 18 and 18 and an adjusting nut 19 which are supported by the mounting substrate 16 and sandwich the cylinder rod 17.
【００２９】そして、前記袋状弾性皮体１０は、エア入
口２０とエア出口２１とをもつ基板２２に取付けられ、
この基板２２は、前記シリンダ−ロッド１７の先端側に
取付けられて押し引き移動するようになっている。The bag-shaped elastic skin 10 is attached to a substrate 22 having an air inlet 20 and an air outlet 21,
The substrate 22 is attached to the tip end side of the cylinder-rod 17 so as to be pushed and pulled.
【００３０】なお、図１中、２３は基板２２に突出され
てゴムチュ−ブ押え１１を支持する可撓性支持棒を示
し、この支持棒２３があっても、袋状弾性皮体１０の自
由な膨張には支障のないようにしている。その反面、塩
ビ原管７への挿入には好都合になっている。勿論、この
支持棒２３はなくてもよい。In FIG. 1, reference numeral 23 denotes a flexible support rod that projects from the substrate 22 and supports the rubber tube retainer 11. Even if the support rod 23 is provided, the bag-shaped elastic body 10 can be freely moved. It does not hinder the expansion. On the other hand, it is convenient for insertion into the PVC original pipe 7. Of course, the support bar 23 may be omitted.
【００３１】次に、以上のような成形装置１を用いてゴ
ム輪受口片受曲管６を成形する方法の１例について述べ
る。Next, an example of a method of molding the rubber ring receiving piece curved pipe 6 using the molding apparatus 1 as described above will be described.
【００３２】先ず、加熱軟化した１本の塩ビ原管７を曲
管部用金型３および受口部用金型４に亘り収容する。次
いで、原管押込用エアシリンダ−１３を伸び作用して原
管外端に押圧当接する。次いで、ゴムチュ−ブ押込用エ
アシリンダ−１５を伸び作用して受口部用金型４に収容
された塩ビ原管７の一端側に、袋状弾性皮体１０を内嵌
挿入して、この袋状弾性皮体１０で塩ビ原管７の一端側
をフリ−の状態で支持する。First, a single PVC raw tube 7 that has been softened by heating is housed over the curved tube mold 3 and the mouth part mold 4. Then, the air cylinder 13 for pushing the raw pipe is extended and pressed against the outer end of the raw pipe. Then, the air cylinder 15 for pushing the rubber tube is extended to insert the bag-shaped elastic skin 10 into one end side of the raw PVC pipe 7 housed in the receptacle mold 4, The bag-shaped elastic skin 10 supports one end side of the PVC original pipe 7 in a free state.
【００３３】そして、両金型３，４を型シメしてから、
約１２ｋｇ／ｃｍ2 の加圧エアを袋状弾性皮体１０に供
給しながら、原管押込用エアシリンダ−１３側からも約
２ｋｇ／ｃｍ2 の加圧エアを塩ビ原管７へ供給し約９０
秒ブロ−する。After the molds 3 and 4 are clamped,
While supplying about 12 kg / cm 2 of pressurized air to the bag-shaped elastic body 10, about 2 kg / cm 2 of compressed air is supplied to the PVC original pipe 7 from the air cylinder pressing side of the original pipe-13. 90
Blow for seconds.
【００３４】その結果、受口部用金型４ではそのキャビ
ティに沿って受口５がブロ−成形でき、曲管部用金型３
ではそのキャビティに沿った曲管部がブロ−成形でき
る。As a result, the socket 5 can be blow-molded along the cavity of the socket mold 4, and the curved tube mold 3 can be formed.
Then, the curved pipe portion along the cavity can be blow-molded.
【００３５】次いで、袋状弾性皮体１０へ供給した加圧
エアを抜いてから、原管押込用エアシリンダ−１３側の
加圧エアを更に９０秒ブロ−する。Next, after the pressurized air supplied to the bag-shaped elastic leather body 10 is released, the pressurized air on the side of the raw pipe pushing air cylinder 13 is blown for another 90 seconds.
【００３６】次いで、両金型３，４を開き、原管押込用
エアシリンダ−１３側の加圧エアを、更に９０秒冷却ブ
ロ−してから、このエアを止め、原管押込用エアシリン
ダ−１３およびゴムチュ−ブ押込用エアシリンダ−１５
を縮み作用させる。そこで、成形品たるゴム輪受口片受
曲管６を両金型３，４から取出す。Next, the molds 3 and 4 are opened, and the pressurized air on the air cylinder 13 side for pushing the raw pipe is cooled and blown for another 90 seconds, and then this air is stopped to stop the air cylinder for pushing the raw pipe. -13 and air cylinder for pushing rubber tube-15
Shrinks. Then, the rubber ring receiving piece bending tube 6 as a molded product is taken out from both molds 3 and 4.
【００３７】なお、本発明の簡易型ブロ−成形装置は、
ゴム輪受口片受曲管に限らず、一般の受口付片受またと
両受曲管は勿論、他のブロ−成形にも適用することがで
きる。The simple blow molding apparatus of the present invention is
The present invention can be applied not only to the rubber ring receiving piece curved receiving tube, but also to a general blower molding with a receiving piece or both bending receiving tubes, as well as other blow molding.
【００３８】[0038]
【発明の効果】本発明によると、高圧型ブロ−成形金型
に袋状弾性皮体を挿入して、これに原管の一端をフリ−
の状態で外嵌したので、高圧型ブロ−成形金型のキャビ
ティに良好に精度よく沿わしながら、低圧型ブロ−成形
金型を簡素化・安価にすることができる。According to the present invention, the bag-shaped elastic skin is inserted into the high-pressure blow molding die, and one end of the raw pipe is freed in this.
Since the external fitting is performed in this state, the low pressure blow molding die can be simplified and made inexpensive while following the cavity of the high pressure blow molding die satisfactorily and accurately.
【００３９】特に、大口径化した受口付曲管を成形する
とき、その曲管の多数の曲率をブロ−成形する場合に
も、比較的構造複雑化する受口部の金型を共通とするこ
とから、全体として安価な設備にすることができる。In particular, when molding a curved pipe with a large-diameter inlet, even if a large number of curvatures of the curved pipe are blow-molded, a common die for the receiving portion, which is relatively complicated in structure, is used. Therefore, the equipment can be inexpensive as a whole.
【図１】本発明の実施例の全体模式図である。FIG. 1 is an overall schematic diagram of an example of the present invention.
【図２】図１のＡ部拡大図である。FIG. 2 is an enlarged view of part A in FIG.
【図３】図１により成形されたゴム輪受口片受曲管の一
部断面省略全体図である。FIG. 3 is an overall view with a partial cross-section omitted of the rubber ring receiving piece bending tube molded according to FIG.
１…成形装置、２…金型、３…曲管部用金型、４…受口
部用金型、７…塩ビ原管DESCRIPTION OF SYMBOLS 1 ... Molding device, 2 ... Mold, 3 ... Curved tube part mold, 4 ... Receptacle part mold, 7 ... PVC original pipe
Claims (2)
圧形ブロ−成形金型と、単純形状であって若干の伸延量
とするキャビティをもった低圧形ブロ−成形金型とを一
体的に連設し、これらの金型に１本の加熱軟化した熱可
塑性合成樹脂原管を収容し、前記高圧形ブロ−成形金型
に高圧を、低圧形ブロ−成形金型に低圧を、それぞれ略
同時に供給して各ブロ−成形する装置であって、 前記高圧形ブロ−成形金型に袋状弾性皮体を挿入して、
該袋状弾性皮体に前記原管の一端側をフリ−の状態で外
嵌して、該袋状弾性皮体内に高圧を供給してブロ−成形
することにより、低圧形ブロ−成形金型を簡素にしたこ
とを特徴とする簡易型ブロ−成形装置。1. A high-pressure blow molding die for a small chamber having a cavity having a complicated shape and a low-pressure blow molding die having a cavity having a simple shape and a slight extension amount are integrally formed. These molds are connected in series, and one thermoplastic soft resin original pipe softened by heating is housed in these molds. High pressure is applied to the high-pressure blow molding mold, and low pressure is applied to the low-pressure blow molding mold. An apparatus for simultaneously supplying and blow molding, wherein a bag-shaped elastic skin is inserted into the high-pressure blow molding die,
A low-pressure blow molding die is obtained by externally fitting one end side of the original pipe to the bag-shaped elastic skin in a free state and supplying high pressure into the bag-shaped elastic skin to perform blow molding. A simple blow molding device characterized by simplifying.
形するキャビティとし、低圧形ブロ−成形金型を曲管部
を成形するキャビティとして、受口付熱可塑性合成樹脂
曲管を成形する請求項１に記載の簡易型ブロ−成形装
置。2. A thermoplastic synthetic resin curved pipe with a receiving port, wherein the high-pressure blow molding die is used as a cavity for forming a receiving portion, and the low-pressure blow molding die is used as a cavity for forming a curved pipe portion. The simple blow molding device according to claim 1, which performs molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001283371A JP3590599B2 (en) | 2001-09-18 | 2001-09-18 | Simple blow molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001283371A JP3590599B2 (en) | 2001-09-18 | 2001-09-18 | Simple blow molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003089148A true JP2003089148A (en) | 2003-03-25 |
| JP3590599B2 JP3590599B2 (en) | 2004-11-17 |
Family
ID=19106869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001283371A Expired - Fee Related JP3590599B2 (en) | 2001-09-18 | 2001-09-18 | Simple blow molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3590599B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114920445A (en) * | 2022-05-23 | 2022-08-19 | 四川高晟医药包材科技有限公司 | Production line and production process of medium borosilicate glass medicinal bottle |
-
2001
- 2001-09-18 JP JP2001283371A patent/JP3590599B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114920445A (en) * | 2022-05-23 | 2022-08-19 | 四川高晟医药包材科技有限公司 | Production line and production process of medium borosilicate glass medicinal bottle |
| CN114920445B (en) * | 2022-05-23 | 2023-10-17 | 四川高晟医药包材科技有限公司 | Production line and production process of medium borosilicate glass medicinal bottle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3590599B2 (en) | 2004-11-17 |
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