JPS60229739A - Cooling method of mold for expansion molding - Google Patents
Cooling method of mold for expansion moldingInfo
- Publication number
- JPS60229739A JPS60229739A JP59087084A JP8708484A JPS60229739A JP S60229739 A JPS60229739 A JP S60229739A JP 59087084 A JP59087084 A JP 59087084A JP 8708484 A JP8708484 A JP 8708484A JP S60229739 A JPS60229739 A JP S60229739A
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- cylinder
- cooling
- piston
- mold
- 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)
- Molding Of Porous Articles (AREA)
Abstract
Description
【発明の詳細な説明】
く技術分野〉
この発明は発泡成形における成形型の冷７ＪＪｈ法に関
する。DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a cooling 7JJh method for a mold in foam molding.
さらに訂しくはいえば、成形型の型間内に発泡性熱可塑
性樹脂粒子を充填し、該樹脂粒子を熱気等の加熱媒体に
より加熱膨張させて発泡成形品を得る発泡成形における
成形型の冷却方法に関する。More specifically, a method for cooling a mold in foam molding, in which expandable thermoplastic resin particles are filled between the molds of a mold, and the resin particles are heated and expanded by a heating medium such as hot air to obtain a foam molded product. Regarding.
く背景及び従来技術〉
従来発泡成形にＪコける成形型の水冷Ｗについては、冷
却水圧力の変動により均−冷［１が困難であり、このた
め離型の際に成形品が部分的に膨張着しくは変形を起し
て製品精度が悪化するという問題があった。Background and prior art> Regarding water cooling of the mold used in conventional foam molding, uniform cooling [1] is difficult due to fluctuations in cooling water pressure, and as a result, the molded product may be partially damaged during mold release. There is a problem in that expansion and deformation occur, resulting in poor product accuracy.
また、上記水冷却においては、成形型や成形品の形状、
寸法等に応じて冷却水の水圧を調整する必要があるが、
その調整も水肚変動が大きいことから困難を伴うもので
あった。In addition, in the water cooling mentioned above, the shape of the mold and molded product,
It is necessary to adjust the water pressure of the cooling water according to the dimensions, etc.
Adjustment was also difficult due to large fluctuations in water levels.
このような問題点を解消する成形型の冷ｕ］ｈ法として
、出願人においては貯水タンク内に加）ｆ−１ア−を供
給して貯水タンク内の冷却水を排出噴射りる／ｊ法を先
に桿菌したが（特開昭５６−１４４９３２ｇ公報参照）
、タンク内に次噴射用の冷却水を供給するには、タンク
内のエアー斤を１回噴１２Ｊ ｆ５に大気圧に戻さなけ
ればならないと共に冷却水のタンク内への吸水が水圧力
による自然給水であることから、冷却水をタンク内の所
定水位まで貯めるのに時間を要し、特にタンク１杯分の
冷却水量では冷却が不充分で連続的に２〜３回噴射動作
を繰り返す必要がある場合においてその時間的［１スが
問題となっていた。As a method for cooling molds to solve these problems, the applicant has proposed a method for discharging and injecting the cooling water in the water storage tank by supplying a) f-1a into the water storage tank. The method was first applied to bacilli (see JP-A-56-144932g).
In order to supply cooling water for the next injection into the tank, the air in the tank must be returned to atmospheric pressure to 12J f5 once, and the cooling water is absorbed into the tank by natural water pressure. Therefore, it takes time to store the cooling water to the specified water level in the tank, and in particular, the amount of cooling water for one tank is insufficient for cooling, and it is necessary to repeat the injection operation 2 to 3 times in succession. In some cases, the time was a problem.
〈目的〉
この発明は上記問題点に鑑みてなされたものであり、均
一冷却がｑ能であってしかも水圧調整を容易に行なえる
発泡成形における成形型の冷却方法を提供することを目
的とする。<Purpose> The present invention has been made in view of the above problems, and an object thereof is to provide a method for cooling a mold in foam molding, which is capable of uniform cooling and can easily adjust water pressure. .
〈構成〉
かかる目的を達成するためのこの発明による発泡成形に
Ｊ３Ｇ）る成形型の冷却方法の構成としては、−・対の
成形型の各々の蒸気室に冷却水管を挿入しておき、上記
冷却水管と水供給源との間に介設されたピストン付きの
シリンダー内に冷却水を導入して貯水し、次いでピスト
ンのスライド操作にてシリンダー内の冷却水を加圧排出
して冷却水管より成形型へ噴射することを特徴とする。<Structure> The structure of the mold cooling method for foam molding according to the present invention to achieve the above object is as follows: - Cooling water pipes are inserted into the steam chambers of each of the pair of molds, and the above-mentioned method is employed. Cooling water is introduced and stored in a cylinder with a piston interposed between the cooling water pipe and the water supply source, and then by sliding the piston, the cooling water in the cylinder is discharged under pressure and molded from the cooling water pipe. It is characterized by being injected into the mold.
〈実施例〉
次いでこの発明の実施例についてその使用ａｈを示す添
付図面を参照しながら以ｔに説明する。<Embodiments> Next, embodiments of the present invention will be described below with reference to the accompanying drawings showing the use thereof.
（１０）はコアー型、（２０）はキャビティ型であり、
双方にて一対の発泡成形型を構成している。(10) is a core type, (20) is a cavity type,
Both constitute a pair of foam molds.
（１１）（１２）は各成形型のフレーム、（１２）（２
２）は各成形型の蒸気室を示している。（３０）（４０
）は各々の蒸気室に挿入しである冷却水管であり、この
冷却水管（３０）（４０）にはスプレーノズル（３１）
（４１）又はキリ孔を構成しである。また、各冷却水管
（３０）（４０）に接続された外部配管（３２）（４２
）の途中にはそれぞれ逆止弁（３３）（４３）及び絞り
弁（３４１（４４）が設けられている。そして両冷却水
管（３０１（４０）は上記外部配管（３２０４２）を介
して蒸気室（１２０２２）外で相互に連通されている。(11) (12) are the frames of each mold, (12) (2)
2) shows the steam chamber of each mold. (30) (40
) are cooling water pipes inserted into each steam chamber, and these cooling water pipes (30) and (40) are equipped with spray nozzles (31).
(41) or constitutes a drilled hole. In addition, external piping (32) (42) connected to each cooling water pipe (30) (40)
) are provided with check valves (33) (43) and throttle valves (341 (44)), respectively. Both cooling water pipes (301 (40) are connected to the steam chamber via the external pipe (32042). (12022) Externally communicated with each other.
（５０）は冷却水管（３０）（４０）と水供給源として
の給水管（６０）との間に介設されたシリンダーであり
、具体的には給水管（６０）をシリンダー（５０）の一
端に配管すると共に同じ側に、外部配管（３２）（４２
）と連通している吐出管（５１）を配管して介設されて
いる。上記シリンダー（５０）にはピストンロッド（５
３）を連結したピストン（５２）を禍成しであると共に
給水管（６０）が配管しである側と反対側の端部には通
気孔（５４）が成形されている。(50) is a cylinder interposed between the cooling water pipes (30) and (40) and the water supply pipe (60) as a water supply source. Specifically, the water supply pipe (60) is connected to the cylinder (50). External piping (32) (42
) is interposed by a discharge pipe (51) that communicates with the discharge pipe (51). The cylinder (50) has a piston rod (5
3), and a vent hole (54) is formed at the end opposite to the side where the water supply pipe (60) is connected.
そして、上記ピストン１コツト（５３）先端には油圧作
動シリンダー（７０）が連結されており、その油圧作動
シリンダー（７０）の操作によりピストン（５２）を往
復スライドできるようになっている。A hydraulic cylinder (70) is connected to the tip of the piston (53), and the piston (52) can be slid back and forth by operating the hydraulic cylinder (70).
（７１）は油圧作動シリンダー（７０）の制御盤である
。なお、給水管の途中部には逆止弁（６１）が設置ノら
れている。(71) is a control panel for the hydraulic cylinder (70). Note that a check valve (61) is installed in the middle of the water supply pipe.
＜ １３）（２３）は蒸気供給口、（１４）（２４）は
ドレン弁（図示せず）と連結した排水口、（２５）はキ
ャビティ用バックプレート、（８０）は原料となる発泡
性可塑性樹脂粒子を供給する原料充填器、（８１）はエ
ジエクＩ−ビン、（Δ）は］コアー型１０）とキャビテ
ィ型（２０）間の型窩内で形成される所定形状の発泡成
形品を示している。<13) (23) is a steam supply port, (14) (24) is a drain port connected to a drain valve (not shown), (25) is a back plate for the cavity, and (80) is a foamable plastic material used as a raw material. A raw material filling device for supplying resin particles, (81) is an Egiek I-bin, and (Δ) is a foam molded product with a predetermined shape formed in the mold cavity between the core mold 10) and the cavity mold (20). ing.
そして、上記装置を使用してこの発明による成形型の冷
却方法を実施するには、まず、油珪作初シリンダー（７
０）でピストン（５２）を［臀位置から下方へスライド
し、ピストン（５２）による吸入作用で給水管（６０）
より冷却水をシリンダー（５０）内に強制的に導入して
１シヨツト相当かの冷却水をシリンダー（５０）内に貯
水しておく。この際外部配管（３２）（４２）に設けた
逆止弁（３３）（４３）の作用で冷却水管（３０） （
４０）側からのエアー、残留水等の吸入が阻止される。In order to carry out the mold cooling method according to the present invention using the above-mentioned apparatus, first, the first cylinder made of oil silicon (7
0), slide the piston (52) downward from the buttock position, and the suction action of the piston (52) opens the water supply pipe (60).
Cooling water is forcibly introduced into the cylinder (50) to store cooling water equivalent to one shot in the cylinder (50). At this time, the cooling water pipes (30) (
40) Inhalation of air, residual water, etc. from the side is prevented.
そして、成形ザイクルが冷却■稈に移行すると同時に、
油汁作動シリンダー（７０）でピストンを上方へスライ
ドしてシリンダー（５０）内の冷却水を吐出管（５１）
より加圧排出し、冷却水管（３０）（４０）のスプレー
ノズル（３１０４１）から一定遇の冷却水をコアー型〈
１０〉、キトどティ型（２０）へ噴射してこれらを冷却
する。この際給水管（６０）に設置ノた逆止弁（６１）
で、給水管（６０）側への冷ＪＪＩ水の逆流が阻止され
る。Then, at the same time as the molded cycle transitions to the cooling culm,
The piston is slid upward in the oil operated cylinder (70) and the cooling water in the cylinder (50) is discharged to the discharge pipe (51).
Discharge the cooling water under more pressure and spray a certain amount of cooling water from the spray nozzles (31041) of the cooling water pipes (30) and (40) to the core type.
10>, inject into the Kitodoti mold (20) to cool them. At this time, a check valve (61) was installed on the water supply pipe (60).
This prevents the cold JJI water from flowing back toward the water supply pipe (60).
なうが、］コアー型１０）とキャビティ型（２０）とは
冷却表面積が異なり、一般的には〕アー型（１０）の１
ノがキャビティ型（２０）よりも冷え易いとされる。そ
こで、必要に応じて絞り弁（３４）（４４）で」アー型
（１０）と１トビティ型（２０）との冷却水の噴射割合
を調整して１６１程度の冷Ｉｎ効果が（ｑられるように
しておく。However, the cooling surface area is different between the core type 10) and the cavity type (20), and generally speaking, the core type 10) is different from the cavity type 10).
It is said that the type is easier to cool than the cavity type (20). Therefore, the injection ratio of cooling water between the A-type (10) and the 1-way type (20) is adjusted using the throttle valves (34) and (44) as necessary, so that a cold In effect of about 161 can be obtained (q). Keep it.
冷却水の噴射圧力としては１５〜４Ｋｇ／ｃｉ程度が好
ましく、配管抵抗によって異なるが、例えばシリンダー
（５０）どして内径１５０ ｍｍ、ストローク４００ｍ
ｍ、油圧作動シリンダー（７０）として内径４０ｍｍの
ものを用い、油圧作動シリンダー（７０）の作動油圧力
を３５Ｋｇ／ｃ＃ｉ、噴射時間を２秒程度に設定ηるこ
とによって噴射圧力２３醇／ ｃｒｉ程度が得られる。The cooling water injection pressure is preferably about 15 to 4 kg/ci, and varies depending on the piping resistance, but for example, the cylinder (50) has an inner diameter of 150 mm and a stroke of 400 m.
By using a hydraulic cylinder (70) with an inner diameter of 40 mm, setting the hydraulic pressure of the hydraulic cylinder (70) to 35 Kg/c#i, and setting the injection time to about 2 seconds, the injection pressure is 23 kg/c#i. You can get about cri.
さらに、噴（ト）１カとしては、油圧作動シリンダー（
７０）の作動油圧力を調整するか、或は作動スピードを
調整することによって任息にコンｌ−Ｌｌ −ルできる
ものである。Furthermore, a hydraulically operated cylinder (
It can be controlled as desired by adjusting the hydraulic pressure of 70) or by adjusting the operating speed.
なお、第２図に示すように、各々の冷却水管（３０）（
４０）に対応させて貯水用のシリンダー（５０）及び油
圧作動シリンダー（７０）を構成し、コアー型（１０）
とキヤごブイ型（２０）に対して独立した管路より冷却
水を噴射してもよく、この場合、より正確なＩ＠射水吊
と噴射圧力による確実な冷却が可能となる。In addition, as shown in FIG. 2, each cooling water pipe (30) (
A water storage cylinder (50) and a hydraulic cylinder (70) are constructed in correspondence with the core type (10).
Cooling water may be injected from an independent pipe to the buoy type (20). In this case, more accurate water injection and reliable cooling can be achieved by the injection pressure.
また、ピストン（５２）のスライド操作としては、前述
した油圧作動シリンダー（７０）を廃してシリンダー（
５０）の通気孔（５４）部より高圧水を注入して上昇ス
ライドさせることも考えられ、この場合においては、高
圧水供給口としての通気孔（５４）側に電磁開閉パルプ
を設けてピストン（５２）のスライド操作を行なう一方
、給水管（６０）からの給水圧力によってピストン（５
２）を下１５へ押し下げて冷却水を貯水すればよい。こ
の際、吐出管（５１）側にも電磁開閉バルブを設けて吸
水の際の冷却水ｆｉ （３０）ｆ４０）側への冷却水の
流入を阻止しておく。In addition, for sliding operation of the piston (52), the above-mentioned hydraulic cylinder (70) is eliminated and the cylinder (
It is also possible to inject high-pressure water from the vent hole (54) of the piston ( While performing the sliding operation of the piston (52), the water supply pressure from the water supply pipe (60) causes the piston (52) to slide.
2) can be pushed down to the bottom 15 to store cooling water. At this time, an electromagnetic opening/closing valve is also provided on the discharge pipe (51) side to prevent the cooling water from flowing into the cooling water fi (30) f40) side during water absorption.
く効果〉
以上のように構成８れたこの発明による成形型の冷却方
法によれば、予めシリンダー内に貯水してＪ３いた冷却
水をピストンで加圧排出して成形型に噴（ト）するので
あるから、＝一定量の冷却水を一定８−力で噴射でさて
成形型の均一冷却が可能となり、離型の際に成形品が部
分的に膨張する等の不都合を解消し得て製品精度を良好
に維持できることになる。Effects> According to the mold cooling method according to the present invention configured as described above, the cooling water that has been stored in the cylinder in advance is discharged under pressure by the piston and is injected into the mold. Because of this, it is possible to uniformly cool the mold by spraying a certain amount of cooling water with a certain force, which eliminates inconveniences such as partial expansion of the molded product during mold release, and improves product accuracy. can be maintained in good condition.
また、冷却水の噴射圧力の調整も、例えばピストンに連
結された油圧作動シリンダーの作動油１■力を調整Ｊる
か、或は作動スピードを調整するだけで簡単に行なえる
ので、種々の形状寸法の成形品に容易に対応できること
になる。In addition, the injection pressure of the cooling water can be easily adjusted by, for example, adjusting the force of the hydraulic oil in the hydraulically operated cylinder connected to the piston, or by adjusting the operating speed. This means that molded products with different dimensions can be easily accommodated.
特にピストンのスライド操作を油圧作動シリンダーぐ行
なう場合には、ピストンによる吸入作用にて冷却水をシ
リンダー内へ強制的に引き込めるので、水圧力による自
然給水にて貯水を行なう場合に比べてはるかに迅速にそ
の貯水を完了しＩＪて連続的に２〜３回冷却水の噴射動
性を繰り返づ場合にも時間的ロスが少なくて済むという
特有の効果を奏する。In particular, when sliding the piston using a hydraulically operated cylinder, the piston's suction action forces the cooling water into the cylinder, which is far more effective than storing water through natural water supply using water pressure. Even when the water storage is completed quickly and the jetting motion of the cooling water is repeated two or three times in succession using IJ, there is a unique effect that time loss can be reduced.
図はこの発明の実施例を示（ものぐあり、第１図ｔは冷
却水の噴射状態を示す断面図、第２図は他の実施例を示
す断面図である。
（１０）・・・コアー型、（２０）・・・Ｖヤビテイ型
、（３０） （４０）・・・冷却水管、（５０）・・・
シリンダー、（５２）・・・ビスｉ〜ン、（６０）・・
・給水源としての給水管、（７０）・・・油圧作動シリ
ンダー、（Ａ）・・・発泡成形品。
特許出願人 積水化成品工業株式会着
第１図
第２図The figures show an embodiment of the present invention. (10)... Core type, (20)... V-shaped type, (30) (40)... Cooling water pipe, (50)...
Cylinder, (52)... screw, (60)...
- Water supply pipe as a water supply source, (70)... Hydraulic cylinder, (A)... Foamed molded product. Patent applicant Sekisui Plastics Co., Ltd. Figure 1 Figure 2
Claims (1)
おき、上記冷却水管と水供給源との間に介設されたピス
トン付きのシリンダー内に冷却水を導入して貯水し、次
いでピストンのスライド操作にてシリンダー内の冷却水
を加圧排出して冷却水管より成形ｙ」へ噴射することを
特徴とする発泡成形における成形型の冷却方法。 ２、 シリンダー内の冷却水の貯水をピストンによる吸
入作用で行う上記特許請求の範囲１１項記載の発泡成形
におｔノる成形型の冷却方法。 ３、 ピストンのスライド操作を油圧作動シリンダーで
行う上記特許請求の範囲第１１口又は第２項記載の発泡
成形における成形型の冷ｆＪ１方法。[Claims] 1. A cooling water pipe is inserted into the steam chamber of each of the pair of molds, and cooling water is supplied into a cylinder with a piston interposed between the cooling water pipe and the water supply source. A method for cooling a mold in foam molding, characterized by introducing and storing water, and then pressurizing and discharging the cooling water in the cylinder by sliding a piston and injecting it from a cooling water pipe into the mold. 2. A method for cooling a mold for foam molding according to claim 11, wherein cooling water is stored in the cylinder by suction action by a piston. 3. A cooling fJ1 method for a mold in foam molding according to claim 11 or claim 2, wherein the sliding operation of the piston is performed by a hydraulically operated cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59087084A JPS60229739A (en) | 1984-04-27 | 1984-04-27 | Cooling method of mold for expansion molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59087084A JPS60229739A (en) | 1984-04-27 | 1984-04-27 | Cooling method of mold for expansion molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60229739A true JPS60229739A (en) | 1985-11-15 |
| JPH0313974B2 JPH0313974B2 (en) | 1991-02-25 |
Family
ID=13905077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59087084A Granted JPS60229739A (en) | 1984-04-27 | 1984-04-27 | Cooling method of mold for expansion molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60229739A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007008032A (en) * | 2005-06-30 | 2007-01-18 | Sekisui Plastics Co Ltd | Mold assembly and manufacturing method of foamed resin molding using the same |
| CN103963196A (en) * | 2013-01-31 | 2014-08-06 | 管付生 | Novel steam and cooling water inlet and outlet apparatus during tire mold vulcanization |
-
1984
- 1984-04-27 JP JP59087084A patent/JPS60229739A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007008032A (en) * | 2005-06-30 | 2007-01-18 | Sekisui Plastics Co Ltd | Mold assembly and manufacturing method of foamed resin molding using the same |
| CN103963196A (en) * | 2013-01-31 | 2014-08-06 | 管付生 | Novel steam and cooling water inlet and outlet apparatus during tire mold vulcanization |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0313974B2 (en) | 1991-02-25 |
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