JPH0760764A - Foam molding device - Google Patents

Abstract

PURPOSE:To ensure a high productivity while stabilizing a quality by a construction wherein in a process that a guide bar erects an opening/closing handle, an upper mold is engaged with the opening/closing handle at an upper edge of a slot to be opened, and a vent hole is disengaged from a plug. CONSTITUTION:Using a power for driving an endless belt, an opening/closing handle 2 is changed to an erected state from a horizontal position, thereby being abutted against a lug 14, and an upper mold 1a is pulled up together with the handle 2. By changing the opening/closing handle 2 to a forward inclined attitude just before the removal of a product, the upper mold 1a is rotated down about a journal 11 under its own weight. That is a vent hole 12 is separated from a plug 21, and the upper mold 1a is engaged with a lever 2b of the opening/closing handle 2 at an upper edge of a slot 141 to be held in a mold open state. In this construction, when foam molding is performed after a foaming material is injected to a cavity 15 and the mold is closed, a gas produced in a recess 13 and a stagnant air are released outside the system through a small gap between fitting faces of the plug 21 and the vent hole 12, and stagnation of bubbles does not occur.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、ウレタンフォーム等の
発泡成形品を成形する際に用いる成形型が複数備えられ
た発泡成形装置に関し、更に詳しくは、それらの成形型
内にある空気や発泡成形時に発生する不用ガスを円滑に
系外に逃散させて、高品質，高生産性を確保するように
した発泡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 a foam molding apparatus provided with a plurality of molding dies used for molding a foam molded article such as urethane foam, and more specifically to air and foam in the molding dies. The present invention relates to a foam molding apparatus that smoothly escapes an unnecessary gas generated during molding to the outside of the system to ensure high quality and high productivity.

【０００２】[0002]

【従来の技術】ウレタンフォーム等の発泡原料を成形型
内に注入して所望の発泡成形品を製造する場合、上型が
平坦な蓋形状であれば、発泡成形時の不用ガスやキャビ
ティ内に滞留していた空気は、型合せ面から系外へうま
く逃散させることができた。ところが、型合せ面より上
側に製品凸状部を形成するようになると、空気，ガスが
逃散しにくいキャビティの窪部が上型にでき、この窪部
内の空気等は分散不能に陥った。そうして、製品外観に
欠肉や製品内部に気泡溜りをつくるといった不具合を招
いた。斯る不具合を解消すべく、従来、種々の対策が講
じられてきた。例えば、空気抜き兼用の挿通孔に閉塞材
料を挿入し、キャビティ内の空気を挿通孔との間から排
出させ、離型後、この閉塞材料を除去する方法（特開昭
５９−１３５１３０号公報）である（従来技術１） また、本出願人による実開昭６１−１５８４１２号公報
に記載のごとくの考案も提案されてきた（従来技術
２）。2. Description of the Related Art When a foaming raw material such as urethane foam is injected into a molding die to produce a desired foamed molded article, if the upper die has a flat lid shape, it is possible to fill unnecessary gas during foaming or into the cavity. The retained air could be successfully escaped from the mating surface to the outside of the system. However, when the product convex portion is formed above the die-matching surface, a cavity recessed portion where air and gas hardly escape is formed in the upper die, and air and the like in the recessed portion cannot be dispersed. As a result, defects such as lack of thickness in the appearance of the product and accumulation of air bubbles inside the product were caused. In order to eliminate such a problem, various measures have been conventionally taken. For example, a method of inserting a blocking material into the insertion hole that also serves as an air vent, discharging the air in the cavity from between the insertion hole and removing the blocking material after releasing the mold (Japanese Patent Laid-Open No. 59-135130). (Prior Art 1) Further, a device as described in Japanese Utility Model Laid-Open No. 61-158412 by the present applicant has been proposed (Prior Art 2).

【０００３】[0003]

【発明が解決しようとする課題】しかし、従来のいずれ
の方法にも問題があった。従来技術１によれば、閉塞材
料が空気を逃がすためだけの消耗品として使われ、製品
のコスト高を招き、更には発泡成形の都度、閉塞材料を
挿通孔の中間部に挿入しなければならず、労力負担を強
いられた。また、従来技術２では、製品となる発泡体側
に付いたバリは脱型後に簡単に取除けても、成形型側に
付いたバリ取り作業には難儀した。アームを片手で持ち
上げ、栓体をガス抜き穴から外しながらガス抜き穴周り
の厄介なバリ取りを行なわねばならなかった。かくし
て、品質安定させるために導入されたこれらの従来技術
は、生産性の犠牲のうえに成り立っていた。However, there are problems with any of the conventional methods. According to the conventional technique 1, the plugging material is used as a consumable item only for letting air escape, resulting in a high cost of the product. Further, the plugging material must be inserted into the middle portion of the insertion hole every time foam molding is performed. No, I was forced to work. Further, in the prior art 2, even if the burr attached to the product foam side can be easily removed after demolding, it is difficult to remove the burr attached to the molding die side. I had to lift the arm with one hand and remove the stopper from the vent hole while removing the troublesome deburring around the vent hole. Thus, these conventional techniques introduced to stabilize the quality were at the expense of productivity.

【０００４】本発明は上記問題点を解決するもので、上
型に空気や発泡成形時のガスが分散しにくいキャビティ
の窪部を有する成形型を用いる場合であっても、品質の
安定を図りながら、高生産性を確保するようにした発泡
成形装置を提供することを目的とする。The present invention solves the above-mentioned problems, and achieves stable quality even when a mold having a cavity concave portion in which air or gas during foam molding is difficult to disperse is used in the upper mold. However, it is an object of the present invention to provide a foam molding apparatus that ensures high productivity.

【０００５】[0005]

【課題を解決するための手段】本発明の発泡成形装置
は、下型と上型とからなる成形型を複数設け、各成形型
が発泡原料の注入，型閉め，発泡硬化，型開き，製品脱
型の各工程を循環走行して発泡成形品の連続生産をなす
発泡成形装置にあって、上記成形型が、下型に対し上型
を回動自在とする支軸と、上型上面にキャビティへ貫通
するガス抜き孔と、を有し、更に、成形型に載置されガ
ス抜き孔に嵌合する栓体を固着すると共に上記支軸を中
心に回動自在にして上型に設けた突起片の長孔に遊挿す
るようにした棒状の開閉ハンドルと、型開き工程と製品
脱型工程の区間に配設されこの開閉ハンドルに当接しな
がら開閉ハンドルを水平位置から起立状態に変化させる
湾曲形状のガイドバーと、を備えて、このガイドバーが
開閉ハンドルを起立させる過程で、上型が長孔の上縁で
開閉ハンドルに係止されることで、型開きすると共に上
記ガス抜き孔が上記栓体から外れるようにしたことを特
徴とする。The foam molding apparatus of the present invention is provided with a plurality of molds including a lower mold and an upper mold, and each mold has a foaming material injection, mold closing, foam hardening, mold opening, product In a foam molding device for circulating production of each mold releasing process to continuously produce foam molded products, the molding die comprises a support shaft that allows the upper die to rotate with respect to a lower die and an upper die upper surface. A gas vent hole penetrating into the cavity, and further provided with an upper die rotatably about the support shaft and having a stopper body mounted on the molding die fitted in the gas vent hole fixed thereto. A bar-shaped opening / closing handle that is loosely inserted into the elongated hole of the protruding piece, and is arranged in the section between the mold opening process and the product demolding process, and changes the opening / closing handle from the horizontal position to the standing state while contacting the opening / closing handle. With a curved guide bar, this guide bar erects the open / close handle. In the process of, when the upper die is engaged with the opening and closing handle on the edge of the elongated hole, the gas vent hole while mold opening is characterized in that as outside the above stopper.

【０００６】ここで、「突起片」とは、上型上面に部分
的に突出するように設けた物体をいい、具体的形状を問
うものでない。板状体，管体，切削加工品等のいずれで
もよい。「長孔」とは、開閉ハンドルが遊挿状態になる
ように突起片に開孔されたものをいう。斯る長孔には、
断面「Ｃ」字状に一部が切り欠かれているものも含まれ
る。「棒状の開閉ハンドル」とは、突起片に遊挿する部
分が棒状体のものをいい、他の部分の形状は問わない。
棒状体には管状体，角状体等を含む。Here, the "protrusion piece" means an object provided so as to partially project on the upper surface of the upper mold, and its specific shape is not important. It may be a plate-shaped body, a tubular body, or a machined product. The “long hole” is a hole formed in the protruding piece so that the opening / closing handle is loosely inserted. In such a long hole,
It also includes a part of which is cut out in a C-shaped cross section. The "bar-shaped opening / closing handle" means that the portion loosely inserted in the protruding piece is a rod-shaped body, and the shape of the other portion does not matter.
The rod-shaped body includes a tubular body and a prismatic body.

【０００７】[0007]

【作用】本発明に係る発泡成形装置によれば、開閉ハン
ドルを成形型に載置して栓体をガス抜き孔に嵌合させる
と、ガスは通すが発泡体はフィルム状のものしか通さな
い嵌合隙間を形成する。また、型開き工程と脱型工程と
の区間に開閉ハンドルを水平位置から起立状態とするガ
イドバーが配設されているので、成形型が型開き工程か
ら製品脱型工程へ向かうと、開閉ハンドルは支軸を中心
に回転し起立状態へと進む。開閉ハンドルが起立する過
程で、この開閉ハンドルは突起片を持ち上げるため、上
型も追随して回転し、型開き状態を確保していく。しか
るに、突起片には開閉ハンドルを遊挿させる程の長孔を
設けているので、上型は、自らの重みで開閉ハンドルか
ら離れ、長孔の上縁で開閉ハンドルに係止されるところ
まで傾倒する。すると、ガス抜き孔が栓体から外れるよ
うになり、発泡成形時にガス抜き孔と栓体との嵌合隙間
に侵入したフィルム状のバリをエアで簡単に吹き飛ばす
ことができるようになる。According to the foam molding apparatus of the present invention, when the opening / closing handle is placed on the molding die and the plug is fitted into the gas vent hole, gas is allowed to pass but only the film-shaped foam is allowed to pass. Form a fitting gap. In addition, since a guide bar that raises and lowers the opening and closing handle from the horizontal position is provided in the section between the mold opening process and the demolding process, the opening and closing handle moves when the molding die moves from the mold opening process to the product demolding process. Rotates around the spindle and advances to the standing state. During the process in which the open / close handle stands up, the open / close handle lifts the protruding piece, so that the upper mold follows and rotates to secure the mold open state. However, since the protruding piece has a long hole that allows the opening / closing handle to be inserted loosely, the upper mold is separated from the opening / closing handle by its own weight, and even up to where it is locked by the opening / closing handle at the upper edge of the long hole. To lean. Then, the gas vent hole comes to be disengaged from the plug body, and the film-shaped burr that has entered the fitting gap between the gas vent hole and the plug body during foam molding can be easily blown off by air.

【０００８】[0008]

【実施例】以下、本発明を実施例に基づいて詳述する。
図１〜図４は、本発明に係る発泡成形装置の一実施例を
示す。成形型１は、上型１ａと下型１ｂとからなり、こ
の上型１ａは、下型１ｂの端部に設けた支軸１１を中心
に回転自在に取付けられている（図１）。上型１ａが閉
じることで、製品形状のキャビティ１５を形成する。上
型１ａは、型合せ面より上側に製品の凸状部を造るべく
窪部１３を有している。上型１ａ上面には、窪部１３の
キャビティ１５側へ貫通するガス抜き孔１２が設けられ
ている。また、上型１ａの前面（図１で右側）寄りに
は、後述のレバー２ｂが遊挿される縦長の長孔１４１を
形成した突起片１４が固着されている。EXAMPLES The present invention will be described in detail below based on examples.
1 to 4 show an embodiment of a foam molding apparatus according to the present invention. The molding die 1 is composed of an upper die 1a and a lower die 1b, and the upper die 1a is rotatably attached around a support shaft 11 provided at an end of the lower die 1b (FIG. 1). When the upper mold 1a is closed, the product-shaped cavity 15 is formed. The upper mold 1a has a concave portion 13 on the upper side of the mold matching surface to form a convex portion of the product. A gas vent hole 12 is provided on the upper surface of the upper die 1a so as to penetrate the cavity 13 toward the cavity 15 side. Further, on the front surface (right side in FIG. 1) of the upper mold 1a, a protruding piece 14 having a vertically long slot 141 into which a lever 2b described later is loosely inserted is fixed.

【０００９】符合２は、成形型１に載置される開閉ハン
ドルを示す。開閉ハンドル２は、上記ガス抜き孔１２に
嵌合する栓体２１を固着した板状部２ａと、この板状部
２ａの上側に溶接固定された棒状のレバー２ｂとからな
る。板状部２ａは略方形板で、その端部が支軸１１に回
動自在に支持されている。そして、板状部２ａは、上型
１ａに載置された状態にあるとき、ガス抜き孔１２の対
向位置に栓体２１を有する。Reference numeral 2 indicates an opening / closing handle mounted on the molding die 1. The opening / closing handle 2 is composed of a plate-shaped portion 2a to which a plug 21 fitted into the gas vent hole 12 is fixed, and a rod-shaped lever 2b welded and fixed to the upper side of the plate-shaped portion 2a. The plate-shaped portion 2a is a substantially rectangular plate, and its end is rotatably supported by the support shaft 11. When the plate-shaped portion 2a is placed on the upper die 1a, the plate-shaped portion 2a has a plug 21 at a position facing the gas vent hole 12.

【００１０】栓体２１は、先端をテーパ状にした円柱体
で、ガス抜き孔１２に嵌入すると、その嵌合面で発泡原
料が発泡し充満する圧力でガスは嵌合面隙間を通ってキ
ャビティ１５から系外へ逃散するようになっている。但
し、発泡原料自体はその逃散が阻止されるか、またその
隙間を通って逃散できても薄膜状のものとなるよう設定
している。栓体２１とガス抜き孔１２の嵌合面での隙間
は、１〜１００ミクロン程度で、発泡原料，目的製品の
種類等に応じて種々選択される。本実施例では、板状部
２ａに栓体２１を一個固着するが、窪部１３の形状，大
きさ等に応じて適宜その数を増やす。斯る栓体２１の数
に対応して、前記ガス抜き孔１２が上型１ａに形成され
ることになる。The plug body 21 is a cylindrical body having a tapered tip, and when it is fitted into the gas vent hole 12, the gas is passed through the gap between the fitting surfaces and the cavity is filled by the pressure at which the foaming raw material foams and fills the fitting surface. It is designed to escape from 15 to the outside of the system. However, the foaming raw material itself is set so that its escape is prevented, or even if it escapes through the gap, it forms a thin film. The gap between the plug 21 and the fitting surface of the gas vent hole 12 is about 1 to 100 μm, and is selected variously depending on the foaming raw material, the type of the target product, and the like. In this embodiment, one plug 21 is fixed to the plate-shaped portion 2a, but the number is appropriately increased depending on the shape, size, etc. of the recess 13. The gas vent holes 12 are formed in the upper mold 1a according to the number of the plugs 21.

【００１１】レバー２ｂは、先端にグリップ２２を有す
る棒状体である。レバー２ｂは、前記長孔１４１に遊挿
して、その根元部分を板状部２ａに固定している（図
１）。そして、グリップ２２部分を上型１ａの前面より
更に前方へ突き出すように配設する。かくして、下型１
ｂに対し、上型１ａ，開閉ハンドル２は、支軸１１を中
心に回動自在となるものの、支軸１１によって下型１ｂ
と一体化された状態にある。The lever 2b is a rod-shaped body having a grip 22 at its tip. The lever 2b is loosely inserted into the elongated hole 141 and the root portion thereof is fixed to the plate-shaped portion 2a (FIG. 1). Then, the grip 22 portion is arranged so as to protrude further forward than the front surface of the upper mold 1a. Thus, lower mold 1
On the other hand, although the upper mold 1a and the opening / closing handle 2 are rotatable around the support shaft 11, the lower mold 1b is supported by the support shaft 11.
It is in an integrated state with.

【００１２】図４は、このような開閉ハンドル２を取付
けた成形型１が複数準備され、発泡成形の各工程を循環
させる無端コンベア（又はターンテーブル）に成形型
１，１，１，…をいくつか配設固定して、製品の連続生
産をなす発泡成形装置の概略説明図を示す。ここでは、
無端コンベアが動作すれば、成形型１がサークルライン
４を循環走行する構造になっている。原料注入工程で、
まず発泡原料たるポリウレタンフォームがキャビティ１
５内へ所定量注入される。そして、型閉めされた後、発
泡硬化の工程へ入る。次いで、型開き工程で図３のよう
に成形型１の上型１ａが開かれ、その後、発泡硬化を終
えた発泡成形品５を取出す製品脱型工程へと進む。この
製品脱型工程では、発泡成形品５の取出しの他、成形型
１に付着したバリを圧縮空気のエアジェット洗浄で取除
いたり、次の製品のための芯材をセットしたりする。各
開閉ハンドル２のグリップ２２，２２，…は、成形型１
が循環走行するサークルライン４の外側に配されてい
る。次のガイドバー３との当接をし易くするためであ
る。In FIG. 4, a plurality of molding dies 1 to which such opening / closing handles 2 are attached are prepared, and the molding dies 1, 1, 1, ... Are mounted on an endless conveyor (or turntable) for circulating each step of foam molding. The schematic explanatory drawing of the foam molding apparatus which carries out continuous production of some products by disposing and fixing several is shown. here,
When the endless conveyor operates, the molding die 1 is configured to circulate along the circle line 4. In the raw material injection process,
First of all, polyurethane foam, which is the foaming material, is the cavity 1
A predetermined amount is injected into 5. Then, after the mold is closed, the process of foam hardening is started. Next, in the mold opening step, the upper mold 1a of the molding die 1 is opened as shown in FIG. In this product demolding step, in addition to taking out the foamed molded product 5, burrs adhering to the molding die 1 are removed by air jet cleaning with compressed air, and a core material for the next product is set. The grips 22, 22, ... Of each open / close handle 2 are the mold 1
Are arranged on the outside of the circle line 4 that circulates. This is for facilitating contact with the next guide bar 3.

【００１３】ガイドバー３は、型開き工程と製品脱型工
程の区間に配設して全体を湾曲形状に屈曲した棒鋼加工
品である。図１のごとく、型開き工程に入る前には、グ
リップ２２の下から開閉ハンドル２に当接するよう配設
される。そして、グリップ２２を下から支え、これに当
接しながら開閉ハンドル２を起こすべく上方へ立上がら
せたものである（図２）。こうして、型開き工程直前に
水平位置にあった開閉ハンドル２を起立状態へと変化さ
せる。ガイドバー３は、図３のごとく、一旦起立させた
開閉ハンドル２を製品脱型工程直前で開閉ハンドル２が
多少前傾姿勢になるような位置関係をとる。そして、製
品脱型工程中、斯る前傾姿勢状態を維持するようガイド
バー３をサークルライン４に沿わして付設している。The guide bar 3 is a bar-steel processed product which is arranged in the section between the mold opening step and the product demolding step and is bent into a curved shape as a whole. As shown in FIG. 1, before starting the mold opening step, the grip 22 is arranged so as to come into contact with the opening / closing handle 2. Then, the grip 22 is supported from below, and is raised upward so as to raise the opening / closing handle 2 while abutting against the grip 22 (FIG. 2). In this way, the opening / closing handle 2 that was in the horizontal position immediately before the mold opening process is changed to the standing state. As shown in FIG. 3, the guide bar 3 has such a positional relationship that the opening / closing handle 2 once erected is slightly inclined forward just before the product demolding process. A guide bar 3 is attached along the circle line 4 so as to maintain such a forward tilted posture during the product demolding process.

【００１４】ここで、型開きは、無端コンベアを動かす
動力を利用して達成される。開閉ハンドル２が、水平位
置から起立状態へと変化すると、突起片１４に当って上
型１ａも一緒に引き上げていく。また、製品脱型工程直
前に図３のごとく開閉ハンドル２を前傾姿勢にすると、
上型１ａが、自重で二点鎖線位置から支軸１１を中心に
回転降下する。すなわち、ガス抜き孔１２が栓体２１か
ら離れる。但し、上型１ａは、長孔１４１の上縁で開閉
ハンドル２のレバー２ｂに係止され、型開き状態は保
つ。斯る姿態は、製品脱型工程中続く構成をとってい
る。Here, the mold opening is achieved by using the power for moving the endless conveyor. When the opening / closing handle 2 changes from the horizontal position to the standing state, the upper mold 1a is also pulled up together by hitting the protruding piece 14. Further, when the opening / closing handle 2 is tilted forward as shown in FIG. 3 immediately before the product demolding process,
The upper mold 1a rotates down from the position of the chain double-dashed line by its own weight around the support shaft 11. That is, the gas vent hole 12 separates from the plug body 21. However, the upper mold 1a is locked to the lever 2b of the opening / closing handle 2 at the upper edge of the elongated hole 141 and keeps the mold open state. Such an aspect is configured to continue during the product demolding process.

【００１５】このように構成した発泡成形装置では、キ
ャビティへ発泡原料を注入して型閉め後、発泡成形を行
うと、窪部１３内で発生したガスや滞留していた空気
は、栓体２１とガス抜き孔１２との嵌合面の僅かな隙間
を通って系外へ逃散する。故に、発泡成形品５の外観に
欠肉や発泡成形品内部に気泡溜りができることはない。
安定した高品質の製品が得られる。一方、発泡原料は発
泡成形過程で発泡体に変わっていくが、その大部分は、
栓体２１とガス抜き孔１２の嵌合でその逃散が阻止され
る。ただ、一部は、キャビティを満たした後、この嵌合
面がつくる隙間から漏出する状態にある。それでも、嵌
合面がつくる隙間は既述したように極小なので、発泡硬
化を終えた後のガス抜き孔１２，栓体２１には、フィル
ム状の発泡体しか付着しない状況をつくる。In the foam molding apparatus configured as described above, when foaming raw material is injected into the cavity and the mold is closed and then foam molding is performed, the gas generated in the recessed portion 13 and the air that has stayed therein are plugged. And escapes to the outside of the system through a slight gap between the fitting surface of the gas vent hole 12 and the gas vent hole 12. Therefore, the appearance of the foam-molded product 5 does not have a wall thickness or the inside of the foam-molded product does not have air bubbles.
A stable and high quality product can be obtained. On the other hand, the foaming raw material changes to foam in the foam molding process, but most of it is
The fitting of the plug 21 and the gas vent hole 12 prevents the escape thereof. However, some of them are in a state of leaking from the gap formed by this fitting surface after filling the cavity. Even so, since the gap formed by the fitting surface is extremely small as described above, only the film-shaped foam is attached to the gas vent hole 12 and the plug 21 after the foaming and hardening are completed.

【００１６】次に、斯る発泡成形装置は、型開き工程で
ガイドバー３がレバー２ｂに下から当接して開閉ハンド
ル２を持ち上げるので、開閉ハンドル２をその突起片１
４に遊挿させている上型１ａも一緒に支軸１１を中心に
回転上昇して、型開き状態を完結する。そして、型開き
後、製品脱型工程の間は、ガイドバー３が開閉ハンドル
２を前傾姿勢にさせるので、上型１ａは、長孔１４１の
上縁で開閉ハンドル２に係止されるようにして自重で傾
倒する。故に、ガス抜き孔１２が栓体２１から離れるこ
とになる。かくして、ガス抜き孔１２，栓体２１に付い
た薄膜状のフィルムを製品脱型工程中に圧縮エアを用い
て難なく吹き飛ばすことができる。従って、斯る処理に
時間がかかって生産力が低下していた従来の問題点は解
消される。Next, in the foam molding apparatus, since the guide bar 3 contacts the lever 2b from below and lifts the open / close handle 2 in the mold opening step, the open / close handle 2 is attached to the protruding piece 1 thereof.
The upper mold 1a loosely inserted in 4 also rotates up around the support shaft 11 to complete the mold open state. After the mold is opened, the guide bar 3 causes the open / close handle 2 to tilt forward during the product releasing process, so that the upper mold 1a is locked to the open / close handle 2 at the upper edge of the elongated hole 141. And then lean on its own weight. Therefore, the gas vent hole 12 is separated from the plug body 21. Thus, the thin film attached to the gas vent hole 12 and the plug 21 can be easily blown off using compressed air during the product demolding process. Therefore, the conventional problem that the processing takes time and the productivity is lowered is solved.

【００１７】また、型開き工程と製品脱型工程中、上型
１ａの型開き及びガス抜き孔１２からの栓体２１外しを
ガイドバー３が無端コンベアの駆動エネルギを使って遂
行しているので、何等人力を要しない。従って、省力化
が進み、製品脱型工程では、発泡成形品５の取出し後に
エアジェット洗浄等によるバリ取りを効率的に取り組め
る。更に、既述のごとく、栓体２１とガス抜き孔１２と
の嵌合隙間は、気密性がなくガスは通過するが、発泡体
を阻止するか、又はフィルム状にしか漏出させない間隙
を保っているので、たとえフィルム状のバリができても
剥し易く、ガス抜き孔１２，栓体２１に付いたこれらの
バリを簡単に取除くことができる。加えて、バリ発生量
が少なくなるので、減量ロスの低減に寄与するのみなら
ずバリの廃棄処理負担も軽減する。Further, during the mold opening process and the product demolding process, the guide bar 3 performs the mold opening of the upper mold 1a and the removal of the plug 21 from the gas vent hole 12 by using the driving energy of the endless conveyor. , Does not require any human power. Therefore, labor saving progresses, and in the product demolding step, deburring by air jet cleaning or the like can be efficiently performed after taking out the foamed molded product 5. Furthermore, as described above, the fitting gap between the plug body 21 and the gas vent hole 12 is not airtight and gas passes therethrough, but keep a gap that either blocks the foam or leaks only in the form of a film. Therefore, even if a film-shaped burr is formed, it is easy to peel it off, and these burrs attached to the gas vent hole 12 and the plug 21 can be easily removed. In addition, since the amount of burrs generated is reduced, it not only contributes to the reduction of weight loss but also reduces the burden of burrs disposal processing.

【００１８】尚、本発明においては、前記実施例に示す
ものに限られず、目的，用途に応じて本発明の範囲で種
々変更できる。例えば、発泡成形装置が有する各成形型
１は、同一形状に限定するものでなく、種々のキャビテ
ィ形状とすることができる。また、全ての成形型１にガ
ス抜き孔１２を有することを要求するものではない。少
なくとも一つの成形型にあればよい。ガイドバー３は、
型開き工程と製品脱型工程の区間に配設限定するもので
なく、その配設範囲を広げても構わない。The present invention is not limited to those shown in the above-mentioned embodiment, but can be variously modified within the scope of the present invention depending on the purpose and application. For example, the molding dies 1 included in the foam molding device are not limited to the same shape, but may have various cavity shapes. Further, it is not required that all the molds 1 have the gas vent holes 12. It suffices to have at least one mold. Guide bar 3
The arrangement is not limited to the section between the mold opening step and the product demolding step, and the arrangement range may be expanded.

【００１９】[0019]

【発明の効果】以上のごとく、本発明に係る発泡成形装
置は、キャビティ内の滞留空気や発泡成形時に発生する
不用ガスをキャビティ外へ円滑に逃散させて高品質製品
を生産するだけでなく、成形型に付着したバリを簡単に
取除くことができるので、生産性の向上にも優れた効果
を発揮する。As described above, in the foam molding apparatus according to the present invention, not only the accumulated air in the cavity and unnecessary gas generated at the time of foam molding are smoothly escaped to the outside of the cavity to produce a high quality product, Since burrs adhering to the molding die can be easily removed, it is also effective in improving productivity.

【図面の簡単な説明】[Brief description of drawings]

【図１】発泡硬化工程を終えた成形型周りの断面図であ
る。FIG. 1 is a cross-sectional view around a molding die that has completed a foam curing step.

【図２】型開き工程から製品脱型工程までのガイドバ
ー，上型，開閉ハンドルの位置関係を示す概略説明図で
ある。FIG. 2 is a schematic explanatory view showing a positional relationship between a guide bar, an upper mold, and an opening / closing handle from a mold opening process to a product demolding process.

【図３】製品脱型工程直前の成形型周りの断面図であ
る。FIG. 3 is a cross-sectional view around a molding die immediately before a product demolding step.

【図４】複数の成形型が製造の各工程を循環走行して発
泡成形品の連続生産をなす発泡成形装置の概略説明図で
ある。FIG. 4 is a schematic explanatory view of a foam molding apparatus in which a plurality of molding dies circulates in each manufacturing process to continuously produce foam molded products.

【符号の説明】[Explanation of symbols]

１ 成形型 １ａ 上型 １ｂ 下型 １１ 支軸 １２ ガス抜き孔 １４ 突起片 １４１ 長孔 １５ キャビティ ２ 開閉ハンドル ３ ガイドバー ５ 発泡成形型 1 Mold 1a Upper mold 1b Lower mold 11 Support shaft 12 Gas vent hole 14 Projection piece 141 Long hole 15 Cavity 2 Open / close handle 3 Guide bar 5 Foam mold

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 下型と上型とからなる成形型を複数設
け、各成形型が発泡原料の注入，型閉め，発泡硬化，型
開き，製品脱型の各工程を循環走行して発泡成形品の連
続生産をなす発泡成形装置にあって、上記成形型（１）
が、下型に対し上型を回動自在とする支軸（１１）と、
上型上面にキャビティへ貫通するガス抜き孔（１２）と
を有し、更に、該成形型に載置され、ガス抜き孔に嵌合
する栓体（２１）を固着すると共に上記支軸を中心に回
動自在にして上型に設けた突起片の長孔に遊挿するよう
にした棒状の開閉ハンドル（２）と、型開き工程と製品
脱型工程の区間に配設され、該開閉ハンドルに当接しな
がら開閉ハンドルを水平位置から起立状態に変化させる
湾曲形状のガイドバー（３）とを備えて、該ガイドバー
が開閉ハンドルを起立させる過程で、上型が長孔の上縁
で開閉ハンドルに係止されることで、型開きすると共に
上記ガス抜き孔が上記栓体から外れるようにしたことを
特徴とする発泡成形装置。1. A plurality of molding dies including a lower mold and an upper mold are provided, and each molding mold circulates through each process of injecting a foaming raw material, mold closing, foam hardening, mold opening, and product demolding, and foam molding. In a foam molding machine for continuous production of articles, the molding die (1)
However, a support shaft (11) that allows the upper mold to rotate with respect to the lower mold,
A gas vent hole (12) penetrating into the cavity is provided on the upper surface of the upper die, and a plug body (21) which is placed in the molding die and fits into the gas vent hole is fixed and the spindle is centered. A rod-shaped opening / closing handle (2) which is freely rotatable and inserted into a long hole of a protruding piece provided on the upper mold; and the opening / closing handle which is arranged in a section between a mold opening step and a product demolding step. A guide bar (3) having a curved shape that changes the opening / closing handle from the horizontal position to the upright state while contacting the upper part, and the upper mold opens / closes at the upper edge of the long hole in the process of raising the opening / closing handle by the guide bar. A foam molding apparatus characterized in that the mold is opened and the gas vent hole is disengaged from the plug by being locked by a handle.