JP2990373B2 - Hollow product forming mold and hollow product forming method - Google Patents
Hollow product forming mold and hollow product forming methodInfo
- Publication number
- JP2990373B2 JP2990373B2 JP2290890A JP29089090A JP2990373B2 JP 2990373 B2 JP2990373 B2 JP 2990373B2 JP 2290890 A JP2290890 A JP 2290890A JP 29089090 A JP29089090 A JP 29089090A JP 2990373 B2 JP2990373 B2 JP 2990373B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- inner mold
- molding
- hollow
- product
- 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 - Lifetime
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Confectionery (AREA)
- Jellies, Jams, And Syrups (AREA)
- Formation And Processing Of Food Products (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、チョコレート、チーズ、ゼリー、寒天等の
食料品の中空製品、ろうそくのような日用品の中空製
品、さらにシリコン樹脂、エポキシ樹脂など中空製品を
成形するための成形型、この成形型を使用して中空製品
を成形する方法、及びこの中空製品の中空部に充填材が
充填された中空製品をつくる方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to hollow products for foodstuffs such as chocolate, cheese, jelly and agar, hollow products for daily necessities such as candles, and hollow products such as silicone resin and epoxy resin. The present invention relates to a mold for molding a product, a method for molding a hollow product using the mold, and a method for producing a hollow product in which a hollow portion of the hollow product is filled with a filler.
（従来技術及び発明が解決しようとする課題） 従来の中空製品の製造は一般的には、金属或いは合成
樹脂で合わせ型をつくり、この合わせ型の中に流動状態
にある成形材料を入れ、次いで、この合わせ型をスピン
ナーを用いて回転させて、その後成形材料を固化させ、
最後に成形物を合わせ型より取り出して製造していた。(Prior Art and Problems to be Solved by the Invention) Conventional production of hollow products generally involves forming a mating die from a metal or a synthetic resin, putting a molding material in a fluid state into the mating die, This mold is rotated using a spinner, and then the molding material is solidified.
Finally, the molded product was taken out of the mold and manufactured.
そして、中空製品成形のための金型は通常ポリカーボ
ネートなどの合成樹脂を射出成形することによりつくら
れているが、中空製品を成形するには上記したように合
わせ型、即ち左右域は上下２種類の金型を必要とし、特
に多種類の製品を少量生産する場合には、金型の製作に
コストがかかる欠点がある。A mold for molding a hollow product is usually made by injection molding a synthetic resin such as polycarbonate. However, to mold a hollow product, a matching mold is used as described above. In particular, when a large number of types of products are produced in small quantities, there is a disadvantage that the production of the mold is costly.
また、ポリカーボネートの合わせ型は、離型のために
逆テーパや抜け勾配を設ける必要があり、そのためデザ
インが制約され、消費者のニーズに応えられない欠点が
ある。Further, the combined mold of polycarbonate needs to be provided with a reverse taper or a draft for mold release, so that the design is restricted and there is a drawback that it cannot meet the needs of consumers.
また、ポリカーボネートの合わせ型を用いてスピンナ
ーで回転させ、中空製品を成形する場合は、スピンナー
で縦軸方向及び横軸方向に同時に回転させながら、冷却
などにより成形材料を固化させる必要があるため生産設
備が大きくなり、且つ複雑になり、しかも肉厚が均一な
製品を得ることがむずかしかった。In addition, when a hollow product is formed by rotating with a spinner using a mold of polycarbonate, it is necessary to solidify the molding material by cooling or the like while simultaneously rotating in the vertical and horizontal directions with the spinner. It has been difficult to obtain a product having a large and complicated facility and a uniform wall thickness.
さらに、中空製品の中に充填物が充填された製品を成
形するには、いわゆるワンショットデポジッターと呼ば
れる成形法が知られているが、この方法では単純な形状
のものしか成形できない欠点がある。Furthermore, in order to mold a product in which a hollow product is filled with a filler, a molding method called a so-called one-shot depositor is known, but this method has a disadvantage that only a simple shape can be molded. .
本発明は、前記合わせ型を用いる中空製品の成形法
や、中空部に充填材が充填された製品の成形法の欠点を
解消した新規な成形方法及びその成形に用いる型を提供
することを目的とする。An object of the present invention is to provide a novel molding method which eliminates the drawbacks of a molding method of a hollow product using the above-mentioned mold and a molding method of a product in which a hollow portion is filled with a filler, and a mold used for the molding. And
（課題を解決するための手段） 即ち、本発明は、 （１）弾性材料からなる外型と弾性材料からなる内型と
で構成され、内型は流体の注入によって内型形状を保持
されていることを特徴とする中空製品成形用の成形型。(Means for Solving the Problems) That is, the present invention provides: (1) an outer mold made of an elastic material and an inner mold made of an elastic material, wherein the inner mold is held in an inner mold shape by injecting a fluid. A mold for forming hollow products.
（２）弾性材料からなる外型と、弾性材料からなり流体
を注入して内型形状を保持させた内型との間隙に流動状
態の成形材料を流し込み、次いで成形材料を固化させ、
その後固化した成形品を内型と共に外型から引き抜き、
次いで内型から流体を排出して内型を収縮させ成形品か
ら取り外すことを特徴とする中空製品の成形方法。及
び、 （３）弾性材料からなる外型と、弾性材料からなり流体
を注入して内型形状を保持させた内型との間隙に流動状
態の成形材料を流し込み、成形材料を固化させた後、内
型の流体を排出し内型を収縮させて成形品から取り出
し、形成された成形品の中空部に充填材を充填し、必要
に応じ中空部の口部を密閉し、その後外型を成形品から
離型させることを特徴とする中空部が充填材で充填され
た中空製品の成形方法。(2) The molding material in a flowing state is poured into a gap between the outer mold made of an elastic material and the inner mold that is made of an elastic material and infused with a fluid to maintain the inner mold shape, and then solidifies the molding material,
After that, the solidified molded product is pulled out of the outer mold together with the inner mold,
Next, a method of molding a hollow product, comprising discharging a fluid from the inner mold to shrink the inner mold and remove the inner mold from the molded product. And (3) after the molding material in a flowing state is poured into a gap between the outer mold made of an elastic material and the inner mold made of an elastic material, into which a fluid is injected to maintain the inner mold shape, and the molding material is solidified. The inner mold is discharged, the inner mold is shrunk, and the inner mold is taken out of the molded product.The hollow portion of the formed molded product is filled with a filler, and the opening of the hollow portion is sealed if necessary. A method of forming a hollow product in which a hollow portion is filled with a filler, which is released from a molded product.
である。It is.
本発明を詳しく説明する。先ず中空製品を成形する成
形型について説明する。The present invention will be described in detail. First, a mold for molding a hollow product will be described.
第１図の断面図において、１はゴムラテックスなどの
弾性材料でつくられた外型である。この外型１は、本体
型部1aとその開口に連続して外方へ円錐上に拡がる膜状
の円錐部1bを有する。この円錐部1bを設けておくと離型
操作などの操作が容易になる。２は同じくゴムラテック
スなどの弾性材料でつくられた内型である。３は内型２
を内型形状に保持するための液体、気体等の流体を注入
する流体注入管で、ホルダー（図示されていない）で支
持されており、この管にはバルブ４が設けられている。
５は外型１を支持するための環状のホルダーであり、こ
れは成形体６に取外し自在に結合されている。また成形
枠６には成形材料を注入するノズルが挿入される開口部
７が設けられている。In the sectional view of FIG. 1, reference numeral 1 denotes an outer die made of an elastic material such as rubber latex. The outer mold 1 has a main body mold portion 1a and a film-shaped conical portion 1b that extends outward and conically continuously from the opening thereof. The provision of the conical portion 1b facilitates operations such as a releasing operation. Reference numeral 2 denotes an inner mold made of an elastic material such as rubber latex. 3 is the inner mold 2
A fluid injecting tube for injecting a fluid such as a liquid or a gas for holding the fluid in an inner mold shape, which is supported by a holder (not shown).
Reference numeral 5 denotes an annular holder for supporting the outer mold 1, which is detachably connected to the molded body 6. The molding frame 6 has an opening 7 into which a nozzle for injecting a molding material is inserted.
先ず、所望の形状に成形した外型１の端部をホルダー
５に支持させ、懸吊する。この外型１の本体型部1a中
に、内型２を収縮した状態で挿入し、次いで流体注入管
３から流体を注入して膨張させ所望の内型形状に保持す
る。これによって、外型と内型との間に間隙Ｓが構成さ
れる。本発明の中空製品成形用の成形型は、このよう
に、弾性材料からなる外型と、流体を注入によって内型
形状を保持した状態にある内型とで構成される成形型で
ある。しかして、前記の間隙Ｓに成形材料を流し込み、
固化することによって中空製品を成形することができ
る。First, the end of the outer mold 1 formed into a desired shape is supported by the holder 5 and suspended. The inner mold 2 is inserted into the body mold portion 1a of the outer mold 1 in a contracted state, and then a fluid is injected from a fluid injection pipe 3 to expand the fluid so as to maintain a desired inner mold shape. Thereby, a gap S is formed between the outer die and the inner die. The mold for molding a hollow product of the present invention is a mold composed of an outer mold made of an elastic material and an inner mold in a state of retaining the inner mold shape by injecting a fluid. Thus, the molding material is poured into the gap S,
By solidifying, a hollow product can be formed.
次に本発明の成形型を用いて中空製品を成形する方法
について、チョコレートの成形を例にして説明する。Next, a method of molding a hollow product using the molding die of the present invention will be described by taking chocolate molding as an example.
所望の形状に成形した外型１の端部をホルダー５に支
持させる。このホルダー５に成形枠６を結合する。成形
枠６は、内型２のホルダーと外型１のホルダー５の芯出
し位置決めを行なうものである。外型１は所望の形状を
保持したまま成形枠６に懸吊された状態になる。この外
型１の中に内型を収縮した状態で挿入し、バルブ４を開
いて流体注入管３から内型２に冷気又は保冷液を注入し
て内型２を所望の形状に保持させる。かくして、外型１
と内型２の間に間隙Ｓが生じる。この間隙Ｓは全体にわ
たりほぼ均一になるようにするのが好ましい。そして、
成形枠６により内型２のホルダーと外型１のホルダー５
の芯出し位置決めを行なうので、内型２に流体を注入し
て内型形状を保持したときに外形１との間隙Ｓを繰り返
し一定に保つことができる。The end of the outer mold 1 formed into a desired shape is supported by the holder 5. A molding frame 6 is connected to the holder 5. The molding frame 6 is for centering and positioning the holder of the inner mold 2 and the holder 5 of the outer mold 1. The outer die 1 is suspended from the molding frame 6 while maintaining a desired shape. The inner mold is inserted into the outer mold 1 in a contracted state, the valve 4 is opened, and cool air or a cooling liquid is injected into the inner mold 2 from the fluid injection pipe 3 to hold the inner mold 2 in a desired shape. Thus, outer mold 1
A gap S is generated between the inner mold 2 and the inner mold 2. Preferably, the gap S is substantially uniform throughout. And
Holder of inner mold 2 and holder 5 of outer mold 1 by molding frame 6
When the fluid is injected into the inner mold 2 and the inner mold shape is maintained, the gap S with the outer shape 1 can be repeatedly maintained constant.
開口部７にチョコレート注入用ノズル（図示せず）を
挿入し、該ノズルから加温して流動化させたチョコレー
トを間隙Ｓに流し込む。その際チョコレートの流し込み
によって内型が変形しないよう、バルブ４を調整する。
チョコレートを所定量流し込んだ後、そのまま放置する
か或いは冷却雰囲気中に保持してチョコレートＡを固化
する。その状態を第２図に示す。A chocolate injection nozzle (not shown) is inserted into the opening 7, and the heated and fluidized chocolate is poured from the nozzle into the gap S. At this time, the valve 4 is adjusted so that the inner mold is not deformed by the casting of the chocolate.
After pouring a predetermined amount of chocolate, the chocolate A is left as it is or kept in a cooling atmosphere to solidify the chocolate A. The state is shown in FIG.
このようにして成形したチョコレートを型から外すに
は次のようにする。先ず、第３図に示すように、成形枠
６とホルダー５との結合を外し、成形枠６を持ち上げ
て、内型と成形チョコレートＡとを一緒に外型１から剥
離して、取り出す。外型１は弾性材料で作られているの
で、この離型操作が容易である。In order to remove the thus formed chocolate from the mold, the following is performed. First, as shown in FIG. 3, the connection between the molding frame 6 and the holder 5 is released, the molding frame 6 is lifted, and the inner mold and the molded chocolate A are peeled off from the outer mold 1 together and taken out. Since the outer mold 1 is made of an elastic material, the releasing operation is easy.
この内型と成形チョコレートＡとを、適宜な場所に移
動させ、第４図に示すように、バルブ４を開いて内型２
内の冷気又は保冷液を排出する。内型２は収縮してしぼ
み、中空チョコレート成形品Ａの中空部から取り出し可
能になる。かくして、この内型２を取り外すと、本発明
の目的物一つである中空チョコレート成形品Ａが得られ
る。The inner mold and the molded chocolate A were moved to appropriate places, and as shown in FIG.
Drain the cool air or cool liquid inside. The inner mold 2 shrinks and shrinks, and can be taken out of the hollow portion of the hollow chocolate molded product A. Thus, when the inner mold 2 is removed, a hollow chocolate molded product A, which is one of the objects of the present invention, is obtained.
次に、中空部分に充填材を充填、密閉した成形品の製
造について、中空チョコレート成形品の中空部に粒状物
を充填し、その開口部をチョコレートで密閉した製品の
製造を例にして説明する。Next, the filling of the hollow portion with a filler and the production of a sealed molded product will be described by taking as an example the production of a product in which the hollow portion of a hollow chocolate molded product is filled with particulate matter and the opening thereof is sealed with chocolate. .
前記中空チョコレート製品の成形方法と同様にして、
第１図に示す外型１と内型２の間隙Ｓにチョコレートを
流し込み、固化し、第２図に示す状態となす。その後、
この例の場合は先ず内型２を離型する。すなわち、バル
ブ４を開いて内型の中の冷空又は保冷液を排除して、内
型をしぼませ、収縮させる。そして、成形枠６とホルダ
ー５との結合を外し、成形枠６を持ち上げて、内型２を
中空チョコレート成形品Ａから取りはずす。その状態を
第５図に示す。次いで、中空チョコレート成形品Ａの開
口部に、別に設けた充填材注入用ノズル（図示されてい
ない）を挿入してこのノズルを通して粒状物Ｂを、中空
部に充填する。In the same manner as the method of molding the hollow chocolate product,
Chocolate is poured into the gap S between the outer mold 1 and the inner mold 2 shown in FIG. 1 and solidified to obtain the state shown in FIG. afterwards,
In this case, the inner mold 2 is first released. That is, the valve 4 is opened to remove the cold air or the cooling liquid in the inner mold, thereby deflating and shrinking the inner mold. Then, the connection between the molding frame 6 and the holder 5 is released, the molding frame 6 is lifted, and the inner mold 2 is removed from the hollow chocolate molded product A. The state is shown in FIG. Next, a separately provided filler injection nozzle (not shown) is inserted into the opening of the hollow chocolate molded product A, and the hollow portion is filled with the particulate matter B through this nozzle.
粒状物Ｂの充填が完了したら、充填材注入用ノズルを
取り外し、代わりにチョコレート注入用ノズルを中空部
の開口に当接してチョコレートＣを注入する。次いで冷
却雰囲気に入れるか或いは放置して、ここで注入したチ
ョコレートＣを固化する。第６図はその状態を示したも
のである。When the filling of the granular material B is completed, the filler injection nozzle is removed, and instead, the chocolate injection nozzle is brought into contact with the opening of the hollow portion to inject the chocolate C. Next, the chocolate C injected here is solidified in a cooling atmosphere or left to stand. FIG. 6 shows this state.
その後第７、８図に示す如く離型用カップ８をホルダ
ー５に結合し、空気圧入口９から、空気を圧入して外型
１を外側から押圧する。成形品は外型１から押し出され
て離型する。円錐1bを設けておくとこの操作が円滑に行
なえる。この際、第７、８図に示すように外型を上側に
し、載置台10を当てがってこれを下方に移動させながら
外型１を離型させるとこの操作が容易になり、また製品
が傷つかない。また、この離型の際、上記の方法とは逆
に空気圧入口９から空気を吸引し離型用カップ内を減圧
して、外型を膨張させて成形品を取りだすようにしても
良い。Thereafter, as shown in FIGS. 7 and 8, the release cup 8 is connected to the holder 5, and air is press-fitted from the air pressure inlet 9 to press the outer mold 1 from the outside. The molded product is extruded from the outer mold 1 and released. If the cone 1b is provided, this operation can be performed smoothly. At this time, as shown in FIGS. 7 and 8, the outer mold is set to the upper side, the mounting table 10 is applied, and the outer mold 1 is released while being moved downward, thereby facilitating the operation. Is not hurt. Also, at the time of this mold release, the molded product may be taken out by sucking air from the air pressure inlet 9 to depressurize the inside of the mold release cup and expanding the outer mold, contrary to the above method.
この例では充填物として粒状物を用いたが、これに代
えて液体、気体等を用いても良い。Although a granular material is used as the filler in this example, a liquid, a gas, or the like may be used instead.
（発明の効果） 本発明は、従来の中空製品の成形のように合わせ型を
用いることなく、また成形型としてセトモノ、ガラス等
安価に製作できる元型を用いてゴムラテックスから容易
に成形できるものを用いたので、中空製品の多品種少量
生産体制に有利である。また金型が弾性材料からなり、
その弾性を利用して離型するので、離型のための逆テー
パや抜け勾配をつける必要がないので、非常に微細な形
状の中空製品を製造できる。また生産設備も簡単であ
る。更に、中空製品の中空部に充填材を充填し、その上
を密閉した製品も、中空製品の製造工程を少し変更する
だけで製造できる利点がある。(Effects of the Invention) The present invention can be easily molded from rubber latex without using a mating mold as in the conventional molding of a hollow product, and using an inexpensive original mold such as setomono or glass as a molding mold. This is advantageous for a high-mix low-volume production system for hollow products. The mold is made of an elastic material,
Since the mold is released using the elasticity, it is not necessary to provide a reverse taper or a draft for the release, so that a hollow product having a very fine shape can be manufactured. The production equipment is also simple. Furthermore, a product in which the hollow portion of the hollow product is filled with a filler and the upper portion thereof is sealed has the advantage that it can be manufactured by slightly changing the manufacturing process of the hollow product.
第１図は本発明の成形型の一例を示す断面図である。第
２〜４図は、本発明の中空製品を成形する工程を示す断
面図である。また第５〜８図は、本発明の充填物を充填
し密閉した中空製品の成形工程を示す断面図である。 １……外型、２……内型、３……流体注入管 ４……バルブ、５……ホルダー、６……成形枠 ７……成形材料注入用開口部、８……離型用カップ ９……空気圧入口、10……載置台 Ａ……中空成形品、Ｂ……充填材、Ｃ……密閉材FIG. 1 is a sectional view showing an example of a molding die of the present invention. 2 to 4 are cross-sectional views showing steps of forming the hollow product of the present invention. 5 to 8 are cross-sectional views showing a molding process of a hollow product filled with the filler of the present invention and sealed. DESCRIPTION OF SYMBOLS 1 ... Outer mold, 2 ... Inner mold, 3 ... Fluid injection pipe 4 ... Valve, 5 ... Holder, 6 ... Molding frame 7 ... Molding material injection opening, 8 ... Release cup 9: Air pressure inlet, 10: Mounting table A: Hollow molded product, B: Filler, C: Sealing material
フロントページの続き (56)参考文献 特開 昭55−165753（ＪＰ，Ａ) 特開 昭51−111262（ＪＰ，Ａ) 特開 昭63−312111（ＪＰ，Ａ) 特開 平１−97611（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) B29C 33/00 - 33/76 B29C 39/00 - 39/44 A23G 1/20 - 1/22 Continuation of the front page (56) References JP-A-55-165753 (JP, A) JP-A-51-111262 (JP, A) JP-A-63-312111 (JP, A) JP-A-1-97611 (JP) , A) (58) Fields investigated (Int. Cl. 6 , DB name) B29C 33/00-33/76 B29C 39/00-39/44 A23G 1/20-1/22
Claims (3)
内型とで構成され、内型は流体の注入によって内型形状
を保持されていることを特徴とする中空製品成形用の成
形型。1. A mold for molding a hollow product, comprising: an outer mold made of an elastic material; and an inner mold made of an elastic material, wherein the inner mold has an inner mold shape maintained by injection of a fluid. .
り流体を注入して内型形状を保持させた内型との間隙に
流動状態の成形材料を流し込み、次いで成形材料を固化
させ、その後固化した成形品を内型と共に外型から引き
抜き、次いで内型から流体を排出して内型を収縮させ成
形品から取り外すことを特徴とする中空製品の成形方
法。2. A molding material in a flowing state is poured into a gap between an outer mold made of an elastic material and an inner mold maintained by retaining a shape of an inner mold by injecting a fluid made of the elastic material, and then solidifying the molding material. Thereafter, the solidified molded product is pulled out from the outer mold together with the inner mold, and then the fluid is discharged from the inner mold to shrink the inner mold and remove the molded product from the molded product.
り流体を注入して内型形状を保持させた内型との間隙に
流動状態の成形材料を流し込み、成形材料を固化させた
後、内型の流体を排出し内型を収縮させて成形品から取
り出し、形成された成形品の中空部に充填材を充填し、
必要に応じ中空部の口部を密閉し、その後外型を成形品
から離型させることを特徴とする中空部が充填材で充填
された中空製品の成形方法。3. A molding material in a flowing state is poured into a gap between an outer mold made of an elastic material and an inner mold made of an elastic material into which a fluid is injected to maintain an inner mold shape, and after the molding material is solidified. Discharging the fluid of the inner mold, shrinking the inner mold, taking out from the molded product, filling the hollow portion of the formed molded product with the filler,
A method of molding a hollow product in which a hollow portion is filled with a filler, wherein a mouth portion of the hollow portion is sealed as necessary, and then the outer mold is released from the molded product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2290890A JP2990373B2 (en) | 1990-10-30 | 1990-10-30 | Hollow product forming mold and hollow product forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2290890A JP2990373B2 (en) | 1990-10-30 | 1990-10-30 | Hollow product forming mold and hollow product forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04166306A JPH04166306A (en) | 1992-06-12 |
| JP2990373B2 true JP2990373B2 (en) | 1999-12-13 |
Family
ID=17761837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2290890A Expired - Lifetime JP2990373B2 (en) | 1990-10-30 | 1990-10-30 | Hollow product forming mold and hollow product forming method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2990373B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU668135B2 (en) * | 1992-02-14 | 1996-04-26 | Gradual Pty Ltd | Molding process and apparatus |
| JP6082618B2 (en) * | 2013-02-15 | 2017-02-15 | 株式会社 タナック | Resin molding method |
| CN113290827A (en) * | 2021-05-14 | 2021-08-24 | 北京化工大学 | IV-type high-pressure storage tank plastic liner reaction injection molding process and equipment |
-
1990
- 1990-10-30 JP JP2290890A patent/JP2990373B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04166306A (en) | 1992-06-12 |
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