JP3000700B2 - Method and apparatus for producing molded article having foamed resin layer - Google Patents
Method and apparatus for producing molded article having foamed resin layerInfo
- Publication number
- JP3000700B2 JP3000700B2 JP3065112A JP6511291A JP3000700B2 JP 3000700 B2 JP3000700 B2 JP 3000700B2 JP 3065112 A JP3065112 A JP 3065112A JP 6511291 A JP6511291 A JP 6511291A JP 3000700 B2 JP3000700 B2 JP 3000700B2
- Authority
- JP
- Japan
- Prior art keywords
- molded article
- molded product
- resin layer
- foamable liquid
- liquid resin
- 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 - Fee Related
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は中空部を有する成形品に
発泡性液状樹脂原料を注入して発泡させるようにした発
泡樹脂層を有する成形品の製造方法および装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing a molded article having a foamed resin layer in which a foamable liquid resin raw material is injected into a molded article having a hollow portion and foamed.
【０００２】[0002]
【従来の技術】車両用の合成樹脂成形品、例えばエアス
ポイラには、軽量化のため中空部を有する成形品が用い
られ、その強度を上げるために中空部に発泡樹脂層を形
成したものがある。2. Description of the Related Art As a synthetic resin molded article for a vehicle, for example, an air spoiler, a molded article having a hollow portion for reducing the weight is used, and a foamed resin layer is formed in the hollow portion to increase the strength. .
【０００３】図６はエアスポイラを示し、（ａ）は平面
図、（ｂ）は正面図、（ｃ）はそのＡ−Ａ断面図であ
る。図において、１は合成樹脂により長尺状に成形され
た成形品で、内部に形成された中空部２に発泡樹脂層３
が形成されている。成形品１はエアスポイラとして用い
られるものであり、両端および中央部に形成された脚部
４、５、６に、車体７への固着面８が形成され、それぞ
れ固着用の開口部９を有する。また成形品１の外表面１
０の反対側の中央部には、ストップランプ等の作動部品
を取付けるための作動部品取付部１１が形成され、その
付近には作動部品に接続する電線等の線状部材１２を挿
通するための挿通孔１３が設けられている。FIGS. 6A and 6B show an air spoiler, wherein FIG. 6A is a plan view, FIG. 6B is a front view, and FIG. In the figure, reference numeral 1 denotes a molded article formed in a long shape by using a synthetic resin, and a foamed resin layer 3 is formed in a hollow portion 2 formed therein.
Are formed. The molded product 1 is used as an air spoiler, and has legs 4, 5, and 6 formed at both ends and a central portion, and has a fixing surface 8 to a vehicle body 7, and each has an opening 9 for fixing. The outer surface 1 of the molded article 1
In the center part opposite to 0, there is formed an operating part mounting part 11 for mounting an operating part such as a stop lamp, and in the vicinity thereof, for inserting a linear member 12 such as an electric wire connected to the operating part. An insertion hole 13 is provided.
【０００４】従来の発泡樹脂層を有する成形品の製造方
法は、成形品１の内部に形成した中空部２に発泡性液状
樹脂原料を注入して発泡させ、発泡樹脂層３を形成して
いる。このような従来の方法では、発泡による容積増加
により樹脂原料が中空部２の全体に行きわたるものと考
えていた。In a conventional method for manufacturing a molded article having a foamed resin layer, a foamable liquid resin material is injected into a hollow portion 2 formed inside a molded article 1 and foamed to form a foamed resin layer 3. . In such a conventional method, it is considered that the resin material spreads over the entire hollow portion 2 due to an increase in volume due to foaming.
【０００５】しかし複雑な形状の成形品の場合、あるい
は粘度の高い樹脂原料の場合には、中空部２内に空気や
発生ガス等が残留しやすく、中空部２全体に均一に発泡
樹脂層３を形成することに困難を伴った。このため、中
空部２内で発泡の状況が局部的に変化すると、外表面１
０の形状に影響を及ぼして、外表面１０が局部的に変形
することがある。エアスポイラの場合、車体７のトラン
クパネル上あるいはルーフパネル上に取付けられるの
で、人の手で外表面１０をたたいたりすると、部分的に
外表面１０の剛性が小さいものでは外表面１０が振動し
て、通常は好ましくない音を発生する。さらに外表面１
０に人が手をついて負荷がかかりやすいが、外表面１０
の内側に発泡樹脂層３が形成されていないと成形品１の
強度が増大せず、変形しやすいなどの問題点があった。However, in the case of a molded article having a complicated shape or a resin material having a high viscosity, air, generated gas and the like are likely to remain in the hollow portion 2, and the foamed resin layer 3 is uniformly spread over the entire hollow portion 2. Was difficult to form. For this reason, when the state of foaming locally changes in the hollow portion 2, the outer surface 1
The outer surface 10 may be locally deformed, affecting the shape of the zero. In the case of an air spoiler, the outer surface 10 is mounted on the trunk panel or the roof panel of the vehicle body 7, so that when the outer surface 10 is hit with human hands, the outer surface 10 vibrates if the outer surface 10 is partially rigid. And usually produces undesirable sounds. Further outer surface 1
0 is easily touched by a human hand, but the outer surface 10
If the foamed resin layer 3 is not formed inside the molded article 1, there is a problem that the strength of the molded article 1 does not increase and the molded article 1 is easily deformed.
【０００６】[0006]
【発明が解決しようとする課題】本発明の目的は、成形
品の外表面部内側のほぼ全体に発泡樹脂層を形成するこ
とができ、強度を大きくすることが可能な発泡樹脂層を
有する成形品の製造方法および装置を提供することであ
る。SUMMARY OF THE INVENTION An object of the present invention is to provide a molded article having a foamed resin layer capable of increasing the strength by forming a foamed resin layer almost entirely inside the outer surface of the molded article. An object of the present invention is to provide an article manufacturing method and apparatus.
【０００７】[0007]
【課題を解決するための手段】本発明は次の発泡樹脂層
を有する成形品の製造方法および装置である。 （１）中空部を有する成形品に、成形品の外表面部内側
を覆うに十分な量の発泡性液状樹脂原料を注入する工程
と、成形品の外表面部を下にした状態で、成形品を揺動
させて、外表面部内側のほぼ全域に発泡性液状樹脂原料
を行きわたらせる工程と、発泡性液状樹脂原料を発泡さ
せて、少なくとも成形品の外表面部内側のほぼ全域に発
泡樹脂層を形成する工程とからなることを特徴とする発
泡樹脂層を有する成形品の製造方法。 （２）成形品の中空部に挿入された線状部材を発泡樹脂
層で固着するようにした上記（１）記載の方法。SUMMARY OF THE INVENTION The present invention is a method and an apparatus for producing a molded article having the following foamed resin layer. (1) A step of injecting a foamable liquid resin raw material in an amount sufficient to cover the inside of the outer surface of the molded article into the molded article having a hollow portion, and forming the molded article with the outer surface of the molded article facing down. Swinging the article to spread the foamable liquid resin material over almost the entire area inside the outer surface, and foaming the foamable liquid resin material to foam at least over the entire area inside the outer surface of the molded article A method for producing a molded article having a foamed resin layer, comprising a step of forming a resin layer. (2) The method according to the above (1), wherein the linear member inserted into the hollow portion of the molded product is fixed with a foamed resin layer.
【０００８】（３）中空部を有する成形品を位置決めす
る位置決め装置と、位置決めされた成形品を外表面側を
下にして保持し、かつ移動および揺動可能なハンドを有
するマニピュレータと、成形品に発泡性液状樹脂原料を
注入する注入装置と、前記位置決め装置により位置決め
された成形品をハンドで保持させ、注入装置から成形品
に発泡性液状樹脂原料を注入し、さらに成形品を揺動さ
せるようにマニピュレータおよび注入装置を制御する制
御装置とを有することを特徴とする発泡樹脂層を有する
成形品の製造装置。(3) A positioning device for positioning a molded product having a hollow portion, a manipulator having a hand capable of moving and swinging while holding the positioned molded product with its outer surface side down, and a molded product An injection device for injecting the foamable liquid resin material into the mold, and the molded product positioned by the positioning device is held by a hand, the foamable liquid resin material is injected from the injection device into the molded product, and the molded product is further swung. And a controller for controlling the manipulator and the injection device as described above.
【０００９】本発明において、発泡性液状樹脂原料と
は、発泡性を有し、発泡により発泡樹脂層を形成するも
のであり、発泡剤を含有する液状樹脂、あるいはウレタ
ン樹脂の場合のように、反応により発泡樹脂層を形成す
る樹脂原料などが含まれる。発泡の方法は加熱あるいは
空気中の酸素または水分等との反応などにより行われ
る。In the present invention, the foamable liquid resin raw material has a foaming property and forms a foamed resin layer by foaming. As in the case of a liquid resin containing a foaming agent or a urethane resin, Resin raw materials that form a foamed resin layer by reaction are included. The foaming method is performed by heating or reacting with oxygen or moisture in the air.
【００１０】発泡性液状樹脂原料としては、次のような
ものが適している。すなわち主剤としてポリエステル系
ポリオール、硬化剤として黄変型イソシアネート、発泡
剤として水を用い、発泡倍率５〜２０倍のものである。
このような発泡性樹脂原料の粘度は流動性の観点から、
特別な力を作用させなくても自重で流動可能な５００ｃ
Ｐｓ以下、特に２００ｃＰｓ以下が好ましい。The following are suitable as foamable liquid resin raw materials. That is, a polyester polyol is used as a main component, a yellowing isocyanate is used as a curing agent, and water is used as a foaming agent.
From the viewpoint of fluidity, the viscosity of such a foamable resin raw material,
500c that can flow under its own weight without applying special force
It is preferably at most Ps, particularly preferably at most 200 cPs.
【００１１】上記発泡性液状樹脂原料の反応は次の通り
である。 ＲＮＣＯ＋Ｒ′ＯＨ→ＲＮＨＣＯＯＲ′ （１） の反応により、ウレタン結合が形成する。 ＲＮＣＯ＋Ｈ2Ｏ→ＲＮＨＣＯＯＨ （２） の反応により、水との反応による中間生成物（カルバミ
ン酸）が生成する。 ＲＮＨＣＯＯＨ→ＲＮＨ2＋ＣＯ2 （３） の反応により、炭酸ガスを放出してアミンに変わり発泡
する。 ＲＮＨ2＋ＲＮＣＯ→ＲＮＨＣＯＨＮＲ （４） の反応により、アミンはＮＣＯと反応して、尿素結合が
形成される。上記反応により架橋するが、ウレタン結合
形成速度と発泡速度を調整し、発泡層を形成する。The reaction of the foamable liquid resin raw material is as follows. The reaction of RNCO + R'OH → RNHCOOR '(1) forms a urethane bond. By the reaction of RNCO + H 2 O → RNHCOOH (2), an intermediate product (carbamic acid) is produced by the reaction with water. By the reaction of RNHCOOH → RNH 2 + CO 2 (3), carbon dioxide gas is released to be converted to amine and foam. By the reaction of RNH 2 + RNCO → RNHCOHNR (4), the amine reacts with NCO to form a urea bond. Crosslinking is performed by the above reaction, but the urethane bond formation rate and the foaming rate are adjusted to form a foamed layer.
【００１２】[0012]
【作用】本発明の発泡樹脂層を有する成形品の製造方法
においては、中空部を有する成形品に、成形品の外表面
部内側を覆うに十分な量の発泡性液状樹脂原料を注入
し、成形品の外表面部を下にした状態で、成形品を揺動
させて、外表面部内側のほぼ全域に発泡性液状樹脂原料
を行きわたらせるとともに、発泡性液状樹脂原料を発泡
させて、少なくとも成形品の外表面部内側のほぼ全域に
発泡樹脂層を形成する。この場合、成形品の中空部に線
状部材を挿入した状態で発泡を行い、かつ中空部全体に
わたって発泡させるときには、中空部に挿入された線状
部材を発泡樹脂層で固着することができる。In the method for producing a molded article having a foamed resin layer according to the present invention, a foamable liquid resin raw material is injected into a molded article having a hollow portion in an amount sufficient to cover the inside of the outer surface of the molded article. With the outer surface of the molded product facing down, the molded product is rocked, and the foamable liquid resin material is spread over almost the entire area inside the outer surface, and the foamable liquid resin material is foamed. A foamed resin layer is formed on at least almost the entire area inside the outer surface of the molded article. In this case, when foaming is performed in a state where the linear member is inserted into the hollow portion of the molded article, and when the foaming is performed over the entire hollow portion, the linear member inserted into the hollow portion can be fixed with the foamed resin layer.
【００１３】本発明の発泡樹脂層を有する成形品の製造
装置においては、中空部を有する成形品を位置決め装置
により位置決めし、制御装置によりマニピュレータを制
御して、前記の位置決めされた成形品を外表面側を下に
してマニピュレータのハンドで保持し、その後ハンドで
保持した成形品を注入装置の位置に移動させ、あるいは
注入装置を成形品側に移動させて発泡性液状樹脂原料を
注入し、さらに成形品を揺動させて成形品の外表面内側
のほぼ全域に発泡性液状樹脂原料を行きわたらせた状態
で発泡させ、発泡樹脂層を形成する。In the apparatus for manufacturing a molded article having a foamed resin layer according to the present invention, the molded article having a hollow portion is positioned by a positioning device, and the manipulator is controlled by a control device to remove the positioned molded article. Hold the surface side down with the hand of the manipulator, then move the molded product held by the hand to the position of the injection device, or move the injection device to the molded product side to inject the foamable liquid resin raw material, The foamed resin layer is formed by rocking the molded article and foaming the foamable liquid resin raw material in such a manner that the foamable liquid resin material is spread over almost the entire area inside the outer surface of the molded article.
【００１４】こうして製造された成形品は、中空部に発
泡樹脂層が形成され、特に外表面部内側にはほぼ完全に
発泡樹脂層が形成され、強度が大きくなる。The molded article thus manufactured has a foamed resin layer formed in the hollow portion, and in particular, the foamed resin layer is formed almost completely inside the outer surface portion, thereby increasing the strength.
【００１５】[0015]
【実施例】以下、本発明の実施例を図面により説明す
る。図１は実施例の製造装置を示す平面図、図２はその
Ｂ−Ｂ断面図、図３はＣ−Ｃ断面図、図４はＤ−Ｄ断面
図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a manufacturing apparatus according to an embodiment, FIG. 2 is a BB sectional view thereof, FIG. 3 is a CC sectional view, and FIG. 4 is a DD sectional view.
【００１６】図において、２０は多関節形ロボットなど
のマニピュレータで、成形品１を保持するハンド２１が
アーム２２を介して移動および揺動可能に取付けられて
いる。ハンド２１の先端部には吸盤２３が取付けられ、
成形品１の外表面１０を下にした状態で、吸引パイプ２
４により吸引して保持するようになっている。マニピュ
レータ２０のハンド２１は第１ステーションＩから第２
ステーションII、第３ステーションIIIに矢印Ｒ、Ｓ方
向に移動し、また矢印Ｔ、Ｕ方向に揺動するように制御
装置２５で制御されている。In FIG. 1, reference numeral 20 denotes a manipulator such as an articulated robot, to which a hand 21 holding a molded product 1 is attached via an arm 22 so as to be movable and swingable. A suction cup 23 is attached to the tip of the hand 21,
With the outer surface 10 of the molded article 1 down, the suction pipe 2
4 sucks and holds. The hand 21 of the manipulator 20 moves from the first station I to the second
The controller 25 is controlled to move to the stations II and the third stations III in the directions of the arrows R and S, and swing in the directions of the arrows T and U.
【００１７】２６は第１ステーションＩに設けられた位
置決め装置で、位置決め載置台２７と、その両側に配置
された位置決めバー２８とからなる。２９は第２ステー
ションIIに配置された注入装置で、注入ノズル３０が前
進後退して、成形品１の開口部９に発泡性液状樹脂原料
３１を注入するように、制御装置２５で制御されてい
る。Reference numeral 26 denotes a positioning device provided in the first station I, which comprises a positioning table 27 and positioning bars 28 arranged on both sides thereof. Reference numeral 29 denotes an injection device disposed at the second station II. The injection device 30 is controlled by the control device 25 so that the injection nozzle 30 moves forward and backward to inject the foamable liquid resin material 31 into the opening 9 of the molded article 1. I have.
【００１８】上記の製造装置による製造方法は、まず図
１に示すように、位置決め装置２６の位置決め載置台２
７上に、中空部２を有する成形品１を、外表面１０を下
にして載置し、先端を位置決めバー２８に当接させて位
置決めする。この状態で制御装置２５のプログラムによ
り、図２に示すように、マニピュレータ２０のハンド２
１が第１ステーションＩに伸びて、吸盤２３を成形品１
の外表面１０に当て、吸引パイプ２４から吸引して成形
品１を保持する。In the manufacturing method using the above-described manufacturing apparatus, first, as shown in FIG.
The molded article 1 having the hollow portion 2 is placed on the top 7 with the outer surface 10 facing down, and the tip is brought into contact with the positioning bar 28 for positioning. In this state, according to the program of the control device 25, as shown in FIG.
1 is extended to the first station I, and the suction cup 23 is
And hold the molded article 1 by suction from the suction pipe 24.
【００１９】次に制御装置２５からの指令により、マニ
ピュレータ２０のハンド２１は成形品１を保持したまま
上方向に移動した後、Ｒ方向に回転して第２ステーショ
ンIIに移動する。ここで図３、図４に示すように、注入
装置２９から注入ノズル３０が前進して成形品１の開口
部９に挿入され、中空部２に成形品１との付着性を有す
る発泡性液状樹脂原料３１が注入される。このとき成形
品１の外表面１０の内側を覆うに十分の量の成形品１と
の付着性を有する発泡性液状樹脂原料３１が注入され
る。Next, in response to a command from the control device 25, the hand 21 of the manipulator 20 moves upward while holding the molded product 1, and then rotates in the R direction to move to the second station II. Here, as shown in FIGS. 3 and 4, the injection nozzle 30 advances from the injection device 29 and is inserted into the opening 9 of the molded product 1, and the foaming liquid having an adhesive property to the molded product 1 is inserted into the hollow portion 2. The resin raw material 31 is injected. At this time, a foamable liquid resin raw material 31 having sufficient adhesion to the molded article 1 is injected to cover the inside of the outer surface 10 of the molded article 1.
【００２０】注入終了後制御装置２５の指示により、注
入ノズル３０が後退し、ハンド２１が作動して成形品１
を図３の矢印Ｔ方向および図４の矢印Ｕ方向に揺動さ
せ、外表面１０の内側のほぼ全域に発泡性液状樹脂原料
３１を行きわたらせるとともに付着させる。この間発泡
性液状樹脂原料３１は水分と反応して発泡し、発泡樹脂
層３が形成されるが、必要により加熱等を行ってもよ
い。After the injection is completed, the injection nozzle 30 is retracted according to an instruction from the control device 25, and the hand 21 is operated to operate the molded product 1
Is swung in the direction of arrow T in FIG. 3 and in the direction of arrow U in FIG. 4, so that the foamable liquid resin material 31 spreads over almost the entire area inside the outer surface 10 and adheres thereto. During this time, the foamable liquid resin raw material 31 reacts with moisture to foam, and the foamed resin layer 3 is formed. However, if necessary, heating or the like may be performed.
【００２１】制御装置２５に組まれた成形品１の揺動モ
ード（態様）としては、揺動の角度、時間、速度、方向
などのパラメータを適宜組合せるが、これらのパラメー
タは成形品１の大きさ、形状あるいは発泡性液状樹脂原
料の粘度などによって大きく異なる。これらのパラメー
タはコンピュータによる事前のシミュレーションによっ
てほぼ決定できるので、多種類の成形品を製造するとき
には、複数の揺動モードをあらかじめ作成して制御装置
２５に記憶させておき、製造すべき成形品１に対応した
モードを選択して作動させるようにすることができる。
また、ハンド２１に連結して液状物検出用のセンサーを
成形品１の端末部分に配置してこのセンサーが液状物が
到達したことを検出するまで揺動を続けるようにプログ
ラムを組んでおいてもよい。As the swing mode (aspect) of the molded article 1 assembled in the control device 25, parameters such as the angle, time, speed, and direction of oscillation are appropriately combined. It varies greatly depending on the size, shape, viscosity of the foamable liquid resin raw material, and the like. Since these parameters can be substantially determined by a preliminary simulation by a computer, when manufacturing various types of molded products, a plurality of swing modes are created in advance and stored in the control device 25, and the molded product 1 to be produced is manufactured. Can be selected and activated.
In addition, a program is arranged so that a sensor for detecting a liquid substance is connected to the hand 21 at the terminal portion of the molded article 1 and swings until the sensor detects that the liquid substance has arrived. Is also good.
【００２２】その後ハンド２１は成形品１を保持したま
ま第３ステーションIIIに移動して、吸引の解除により
成形品１を搬出し、さらに第１ステーションＩに戻って
同じ操作を繰り返す。Thereafter, the hand 21 moves to the third station III while holding the molded article 1, carries out the molded article 1 by releasing the suction, returns to the first station I, and repeats the same operation.
【００２３】なお、外表面１０の内側のほぼ全域に発泡
性液状樹脂原料３１を行きわたらせて付着させた後、反
応が進行して発泡性液状樹脂原料３１の粘度が増し、も
はや自重によって流動しなくなったら、発泡樹脂層３の
形成完了を待つまでもなく、ハンド２１を第３ステーシ
ョンIIIに移動させて成形品１を搬出し、この状態で発
泡をさらに進行させてもよい。After the foamable liquid resin material 31 is spread and adhered to almost the entire area inside the outer surface 10, the reaction proceeds and the viscosity of the foamable liquid resin material 31 increases, and the foamable liquid resin material 31 no longer flows under its own weight. When it is no longer necessary, the hand 21 may be moved to the third station III to carry out the molded article 1 without waiting for the completion of the formation of the foamed resin layer 3, and the foaming may be further advanced in this state.
【００２４】こうして製造された成形品１は、外表面の
内側には完全に発泡樹脂層３が形成され、強度が大きく
なる。また成形品１の中空部２に挿通孔１３を通して線
状部材１２を挿通させた状態で中空部２のほぼ全体に発
泡樹脂層３を形成すると、中空部２に挿入された線状部
材１２を発泡樹脂層３で固着することができる。The molded article 1 thus manufactured has the foamed resin layer 3 completely formed on the inner side of the outer surface, and the strength is increased. Further, when the foamed resin layer 3 is formed on substantially the entire hollow portion 2 in a state where the linear member 12 is inserted through the insertion hole 13 into the hollow portion 2 of the molded article 1, the linear member 12 inserted into the hollow portion 2 is formed. It can be fixed by the foamed resin layer 3.
【００２５】図５は他の実施例におけるハンドの先端部
を示す正面図である。この実施例では、ハンド２１の先
端部に、取付部材３２によりブラケット３３が取付けら
れ、このブラケット３３の両端部に吸盤２３および吸引
パイプ２４がそれぞれ２個設けられており、２個の吸盤
２３により、長尺の成形品１を安定して保持するように
なっている。FIG. 5 is a front view showing the tip of the hand according to another embodiment. In this embodiment, a bracket 33 is attached to the distal end of the hand 21 by an attachment member 32, and two suction cups 23 and two suction pipes 24 are provided at both ends of the bracket 33, respectively. The long molded product 1 is stably held.
【００２６】なお、上記実施例では、マニピュレータの
ハンドは成形品を下から保持するようにしたが、成形品
の形状や重量などによっては上から吊したり、あるいは
側面から保持するようにしてもよい。また成形品１を第
１ステーションＩに位置決めした状態で注入装置のノズ
ルを成形品に向けて移動させ、注入するようにしてもよ
い。さらに成形品としてはエアスポイラに限らず、内部
に中空部を有するバンパー、トリムモールディングなど
の他の成形品にも適用可能である。そして発泡性液状樹
脂原料としては、前記例示のものに限らず、他のもので
もよい。In the above embodiment, the hand of the manipulator holds the molded product from below. However, depending on the shape and weight of the molded product, the hand may be suspended from above or may be held from the side. Good. Further, the nozzle of the injection device may be moved toward the molded product while the molded product 1 is positioned at the first station I to perform the injection. Further, the molded product is not limited to the air spoiler, and can be applied to other molded products such as a bumper having a hollow portion therein, trim molding, and the like. The foamable liquid resin raw material is not limited to the above examples, and may be other materials.
【００２７】[0027]
【発明の効果】以上の通り、本発明の発泡樹脂層を有す
る成形品の製造方法によれば、成形品の中空部に発泡性
液状樹脂原料を注入して、外表面部を下にした状態で揺
動するようにしたので、外表面部の内側のほぼ全域に発
泡樹脂層を形成して、変形や好ましくない音の発生を抑
制し、成形品の強度を大きくすることができる。As described above, according to the method for producing a molded article having a foamed resin layer of the present invention, the foamable liquid resin raw material is injected into the hollow portion of the molded article, and the outer surface is turned down. As a result, the foamed resin layer is formed in almost the entire area inside the outer surface portion, thereby suppressing deformation and generation of undesired noise, and increasing the strength of the molded product.
【００２８】本発明の発泡樹脂層を有する成形品の製造
装置においては、マニピュレータのハンドにより成形品
を保持して、発泡性液状樹脂原料の注入と揺動、発泡を
行うようにしたので、簡単な操作で確実に樹脂原料を成
形品の外表面部の内側のほぼ全域に行きわたらせること
ができる。In the apparatus for manufacturing a molded article having a foamed resin layer according to the present invention, the molded article is held by the hand of the manipulator, and the foamable liquid resin raw material is injected, rocked, and foamed. With a simple operation, the resin material can be surely spread over almost the entire area inside the outer surface of the molded article.
【図１】実施例の製造装置の平面図。FIG. 1 is a plan view of a manufacturing apparatus according to an embodiment.
【図２】図１のＢ−Ｂ断面図。FIG. 2 is a sectional view taken along line BB of FIG.
【図３】図１のＣ−Ｃ断面図。FIG. 3 is a sectional view taken along line CC of FIG. 1;
【図４】図１のＤ−Ｄ断面図。FIG. 4 is a sectional view taken along the line DD of FIG. 1;
【図５】他の実施例のハンドの先端部の正面図。FIG. 5 is a front view of a tip portion of a hand according to another embodiment.
【図６】成形品を示し、（ａ）は平面図、（ｂ）は正面
図、（ｃ）は（ｂ）のＡ−Ａ断面図。6 (a) is a plan view, FIG. 6 (b) is a front view, and FIG. 6 (c) is a sectional view taken along the line AA of FIG. 6 (b).
１ 成形品 ２ 中空部 ３ 発泡樹脂層 ９ 開口部 １０ 外表面 ２０ マニピュレータ ２１ ハンド ２３ 吸盤 ２４ 吸引パイプ ２５ 制御装置 ２６ 位置決め装置 ２７ 位置決め載置台 ２８ 位置決めバー ２９ 注入装置 ３０ 注入ノズル ３１ 発泡性液状樹脂原料 DESCRIPTION OF SYMBOLS 1 Molded product 2 Hollow part 3 Foam resin layer 9 Opening 10 Outer surface 20 Manipulator 21 Hand 23 Suction cup 24 Suction pipe 25 Control device 26 Positioning device 27 Positioning mounting stand 28 Positioning bar 29 Injection device 30 Injection nozzle 31 Foamable liquid resin raw material
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−223411（ＪＰ，Ａ) 特開 昭50−27865（ＪＰ，Ａ) 特開 昭49−52265（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 39/00 - 39/44 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-223411 (JP, A) JP-A-50-27865 (JP, A) JP-A-49-52265 (JP, A) (58) Survey Field (Int. Cl. 7 , DB name) B29C 39/00-39/44
Claims (3)
面部内側を覆うに十分な量の発泡性液状樹脂原料を注入
する工程と、成形品の外表面部を下にした状態で、成形
品を揺動させて、外表面部内側のほぼ全域に発泡性液状
樹脂原料を行きわたらせる工程と、発泡性液状樹脂原料
を発泡させて、少なくとも成形品の外表面部内側のほぼ
全域に発泡樹脂層を形成する工程とからなることを特徴
とする発泡樹脂層を有する成形品の製造方法。1. A step of injecting a foamable liquid resin raw material into a molded article having a hollow portion in an amount sufficient to cover the inside of the outer surface of the molded article, and in a state where the outer surface of the molded article is turned down. Swinging the molded product to spread the foamable liquid resin material over substantially the entire area inside the outer surface portion; and foaming the foamable liquid resin material to at least substantially the entire area inside the outer surface portion of the molded product. Forming a foamed resin layer on the molded article.
発泡樹脂層で固着するようにした請求項１記載の方法。2. The method according to claim 1, wherein the linear member inserted into the hollow portion of the molded product is fixed with a foamed resin layer.
置決め装置と、位置決めされた成形品を外表面側を下に
して保持し、かつ移動および揺動可能なハンドを有する
マニピュレータと、成形品に発泡性液状樹脂原料を注入
する注入装置と、前記位置決め装置により位置決めされ
た成形品をハンドで保持させ、注入装置から成形品に発
泡性液状樹脂原料を注入し、さらに成形品を揺動させる
ようにマニピュレータおよび注入装置を制御する制御装
置とを有することを特徴とする発泡樹脂層を有する成形
品の製造装置。3. A positioning device for positioning a molded product having a hollow portion, a manipulator having a movable and swingable hand for holding the positioned molded product with its outer surface side down, and An injection device for injecting the foamable liquid resin material, and a molded product positioned by the positioning device is held by hand, and the foamable liquid resin material is injected from the injection device into the molded product, and the molded product is rocked. And a control device for controlling the manipulator and the injection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3065112A JP3000700B2 (en) | 1991-03-28 | 1991-03-28 | Method and apparatus for producing molded article having foamed resin layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3065112A JP3000700B2 (en) | 1991-03-28 | 1991-03-28 | Method and apparatus for producing molded article having foamed resin layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04299108A JPH04299108A (en) | 1992-10-22 |
| JP3000700B2 true JP3000700B2 (en) | 2000-01-17 |
Family
ID=13277489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3065112A Expired - Fee Related JP3000700B2 (en) | 1991-03-28 | 1991-03-28 | Method and apparatus for producing molded article having foamed resin layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3000700B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6337355B1 (en) | 1997-01-23 | 2002-01-08 | Sunstar Giken Kabushiki Kaisha | Two-pack urethane foam composition |
-
1991
- 1991-03-28 JP JP3065112A patent/JP3000700B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04299108A (en) | 1992-10-22 |
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