JP2013193348A - Method of curing thermosetting urethane - Google Patents

Method of curing thermosetting urethane Download PDF

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JP2013193348A
JP2013193348A JP2012063481A JP2012063481A JP2013193348A JP 2013193348 A JP2013193348 A JP 2013193348A JP 2012063481 A JP2012063481 A JP 2012063481A JP 2012063481 A JP2012063481 A JP 2012063481A JP 2013193348 A JP2013193348 A JP 2013193348A
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thermosetting urethane
mold
product
cavity
heating
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JP5902011B2 (en
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Katsuhiro Sasaoka
勝弘 笹岡
Masami Takemoto
昌己 竹本
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Kojima Industries Corp
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Kojima Press Industry Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a method capable of curing a thermosetting urethane in a short time period.SOLUTION: A method of curing a thermosetting urethane 30 cured by heating includes a casting step of casting the thermosetting urethane 30 in a cavity 20a of a mold 20 having a heater 22, a pressing step of pressing the mold 20, in whose cavity 20a the thermosetting urethane 30 is cast in the casting step, to a product 40 or pressing the product 40 to the mold 20 in whose cavity 20a the thermosetting urethane 30 is cast in the casting step, and a heating step of heating the mold 30 pressed to the product 40 in the pressing step by the heater 22.

Description

本発明は、熱硬化性ウレタンの硬化方法に関する。   The present invention relates to a method for curing a thermosetting urethane.

従来、カウルルーバーには、止水目的のため硬化した熱硬化性ウレタンが成形されている。これにより、カウルルーバーの開口から入った水がエンジンルーム内に入り込むことを防止できる。   Conventionally, a cowl louver has been molded with a thermosetting urethane that has been cured for the purpose of water stopping. Thereby, the water which entered from the opening of the cowl louver can be prevented from entering the engine room.

なお、この出願の発明に関連する先行技術文献情報としては、例えば、特許文献１が知られている。
特開２０００−３５１３５１号公報 As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2000-351351 A

しかしながら、上述した特許文献１の技術では、熱硬化性ウレタンは、以下の２工程（第１の工程、第２の工程）を経てカウルルーバーの裏面に成形されている。第１の工程は、塗布装置からカウルルーバーの裏面に熱硬化性ウレタンを塗布する工程である。第２の工程は、熱硬化性ウレタンを塗布したカウルルーバーをオーブンで加熱する工程である。これにより、熱硬化性ウレタンが硬化していく。このとき、オーブンでの加熱に多くの時間（例えば、５分）を要するため、熱硬化性ウレタンの硬化に多くの時間が必要となっていた。   However, in the technique of Patent Document 1 described above, the thermosetting urethane is formed on the back surface of the cowl louver through the following two steps (first step and second step). A 1st process is a process of apply | coating thermosetting urethane to the back surface of a cowl louver from a coating device. The second step is a step of heating the cowl louver coated with thermosetting urethane in an oven. Thereby, thermosetting urethane hardens | cures. At this time, since much time (for example, 5 minutes) is required for heating in the oven, much time is required for curing the thermosetting urethane.

本発明は、このような課題を解決しようとするもので、その目的は、熱硬化性ウレタンの硬化を短時間で行うことができる方法を提供することである。   The present invention is intended to solve such a problem, and an object of the present invention is to provide a method capable of curing a thermosetting urethane in a short time.

本発明は、上記の目的を達成するためのものであって、以下のように構成されている。
請求項１に記載の発明は、加熱により硬化する熱硬化性ウレタンの硬化方法であって、加熱手段を有する金型のキャビティに熱硬化性ウレタンを流し込む流込工程と、流込工程により熱硬化性ウレタンをキャビティに流し込んだ金型を製品に押し当てる、または流込工程により熱硬化性ウレタンをキャビティに流し込んだ金型に製品を押し当てる押当工程と、押当工程により製品に押し当てた金型または製品を押し当てた金型を加熱手段により加熱する加熱工程と、を備えていることを特徴とする方法である。
この方法によれば、従来技術のオーブンでの加熱と比較した場合、金型を介して、直ぐに熱硬化性ウレタンが加熱される格好となるため、短時間の加熱で済ますことができる。結果として、熱硬化性ウレタンの硬化を短時間で行うことができる。 The present invention is for achieving the above object, and is configured as follows.
The invention according to claim 1 is a method for curing a thermosetting urethane that is cured by heating, and a thermosetting urethane is poured into a cavity of a mold having a heating means, and the thermosetting is performed by the pouring step. Pressing the mold into which the curable urethane was poured into the cavity, or pressing the product against the mold into which the thermosetting urethane was poured into the cavity by the casting process, and pressing against the product by the pushing process A heating step of heating the mold or the mold against which the product is pressed by a heating means.
According to this method, when compared with heating in an oven of the prior art, the thermosetting urethane is immediately heated through the mold, so that heating in a short time can be completed. As a result, the thermosetting urethane can be cured in a short time.

また、請求項２に記載の発明は、請求項１に記載の熱硬化性ウレタンの硬化方法であって、キャビティの内面は、その一部がキャビティに流し込んだ熱硬化性ウレタンに入り込み可能に突起状に形成されていることを特徴とする方法である。
この方法によれば、流し込んだ熱硬化性ウレタンに突起状の部位が入り込む格好となる。したがって、流し込んだ熱硬化性ウレタンの内部からも加熱できるため、より短時間の加熱で済ますことができる。 The invention described in claim 2 is the thermosetting urethane curing method according to claim 1, wherein the inner surface of the cavity protrudes so as to be able to enter the thermosetting urethane partially poured into the cavity. It is the method characterized by being formed in the shape.
According to this method, the protrusion-like portion enters the poured thermosetting urethane. Therefore, since it can heat also from the inside of the poured thermosetting urethane, it can be done in a shorter time.

図１は、本発明の実施例に係る熱硬化性ウレタンの硬化方法を適用した装置の概略図である。FIG. 1 is a schematic view of an apparatus to which a thermosetting urethane curing method according to an embodiment of the present invention is applied. 図２は、図１の次工程を説明する図である。FIG. 2 is a diagram for explaining the next step of FIG. 図３は、図２の次工程を説明する図である。FIG. 3 is a diagram for explaining the next step of FIG. 図４は、図３の次工程を説明する図である。FIG. 4 is a diagram for explaining the next step of FIG. 図５は、図４の次工程を説明する図である。FIG. 5 is a diagram for explaining the next step of FIG. 図６は、図５の変形例を説明する図である。FIG. 6 is a diagram for explaining a modification of FIG.

以下、本発明を実施するための形態を、図１〜５を用いて説明する。まず、図１を参照して、本発明の実施例に係るウレタン硬化装置１を説明する。このウレタン硬化装置１は、主として、流込装置１０と、金型２０とから構成されている。以下に、これら流込装置１０と金型２０とを個別に説明していく。   Hereinafter, the form for implementing this invention is demonstrated using FIGS. First, a urethane curing apparatus 1 according to an embodiment of the present invention will be described with reference to FIG. The urethane curing device 1 mainly includes a pouring device 10 and a mold 20. Below, these pouring devices 10 and metallic mold 20 are explained individually.

流込装置１０は、従来技術の塗布装置と同様に構成されており、所望する対象物に熱硬化性ウレタン３０を流し込み可能な装置である。ここで言う所望する対象物とは、後述する金型２０のキャビティ２０ａとなっている。   The pouring device 10 is configured in the same manner as the coating device of the prior art, and is a device capable of pouring the thermosetting urethane 30 into a desired object. The desired object referred to here is a cavity 20a of the mold 20 described later.

一方、金型２０は、製品（例えば、カウルルーバー）４０に熱硬化性ウレタン３０を所望する形状に成形可能なキャビティ２０ａを有するように構成されている。この金型２０には、ヒータ２２が内蔵されている。これにより、金型２０を加熱できると共に、この金型２０のキャビティ２０ａに流し込んだ熱硬化性ウレタン３０を加熱できる。   On the other hand, the mold 20 is configured to have a cavity 20a in which a thermosetting urethane 30 can be formed into a desired shape in a product (for example, a cowl louver) 40. A heater 22 is built in the mold 20. Thereby, while being able to heat the metal mold | die 20, the thermosetting urethane 30 poured into the cavity 20a of this metal mold | die 20 can be heated.

また、この金型２０のキャビティ２０ａの底面には、突起部２４が形成されている。この突起部２４が、特許請求の範囲に記載の「突起状」に相当する。この突起部２４にも、ヒータ２２が内蔵されている。このヒータ２２が、特許請求の範囲に記載の「加熱手段」に相当する。また、この金型２０は、金型２０自身がシリンダ等の駆動源（図示しない）を介して製品４０に押し当て可能に構成されている。   Further, a protrusion 24 is formed on the bottom surface of the cavity 20 a of the mold 20. The protrusion 24 corresponds to a “projection shape” recited in the claims. This protrusion 24 also includes a heater 22. The heater 22 corresponds to a “heating means” described in the claims. The mold 20 is configured such that the mold 20 itself can be pressed against the product 40 via a drive source (not shown) such as a cylinder.

次に、図１〜５を参照して、ウレタン硬化装置１の動作を説明していく。まず、図１に示す状態から、流込装置１０により金型２０のキャビティ２０ａに熱硬化性ウレタン３０を流し込む（図２参照）。このとき、流し込んだ熱硬化性ウレタン３０に突起部２４が入り込む格好となっている。   Next, the operation of the urethane curing device 1 will be described with reference to FIGS. First, from the state shown in FIG. 1, the thermosetting urethane 30 is poured into the cavity 20a of the mold 20 by the pouring device 10 (see FIG. 2). At this time, the protrusions 24 enter the thermosetting urethane 30 that has been poured.

次に、図２に示す状態から、駆動源により金型２０を製品４０に押し当てる（図３参照）。なお、この押し当てる前に、予め、製品４０の表面を公知のコロナ放電等で改質させておく。これにより、接着剤等を用いることなく、硬化した熱硬化性ウレタン３０を製品に接着させることができる。   Next, from the state shown in FIG. 2, the mold 20 is pressed against the product 40 by a drive source (see FIG. 3). In addition, before this pressing, the surface of the product 40 is modified in advance by a known corona discharge or the like. Thereby, the cured thermosetting urethane 30 can be adhered to the product without using an adhesive or the like.

次に、図３に示す状態から、ヒータ２２を動作（通電）させる（図４参照）。これにより、金型２０のキャビティ２０ａ流し込んだ熱硬化性ウレタン３０が加熱される。この加熱により熱硬化性ウレタン３０は硬化していく。なお、このように加熱されると、従来技術のオーブンでの加熱と比較した場合、金型２０を介して、直ぐに熱硬化性ウレタン３０が加熱される格好となるため、短時間（例えば、２０秒）の加熱で済ますことができる。   Next, the heater 22 is operated (energized) from the state shown in FIG. 3 (see FIG. 4). Thereby, the thermosetting urethane 30 poured into the cavity 20a of the mold 20 is heated. The thermosetting urethane 30 is cured by this heating. In addition, when heated in this way, the thermosetting urethane 30 is immediately heated through the mold 20 as compared with the heating in the oven of the prior art. Seconds).

最後に、図４に示す状態から、駆動源を介した金型２０の押し当てを解除する（図５参照）。すると、上述したように、製品４０の表面に改質が施されているため、硬化した熱硬化性ウレタン３０が製品４０に接着する。すなわち、硬化した熱硬化性ウレタン３０が接着した製品４０が出来上がる。   Finally, the pressing of the mold 20 through the drive source is released from the state shown in FIG. 4 (see FIG. 5). Then, as described above, since the surface of the product 40 is modified, the cured thermosetting urethane 30 adheres to the product 40. That is, the product 40 to which the cured thermosetting urethane 30 is bonded is completed.

本発明の実施例に係る熱硬化性ウレタン３０の硬化方法は、上述した方法によって行われている。この方法によれば、金型２０に内蔵したヒータ２２を動作させて、金型２０のキャビティ２０ａに流し込んだ熱硬化性ウレタン３０を加熱している。したがって、従来技術のオーブンでの加熱と比較した場合、金型２０を介して、直ぐに熱硬化性ウレタン３０が加熱される格好となるため、短時間（例えば、２０秒）の加熱で済ますことができる。結果として、熱硬化性ウレタン３０の硬化を短時間で行うことができる。   The curing method of the thermosetting urethane 30 according to the embodiment of the present invention is performed by the method described above. According to this method, the heater 22 incorporated in the mold 20 is operated to heat the thermosetting urethane 30 poured into the cavity 20 a of the mold 20. Therefore, when compared with the heating in the oven of the prior art, the thermosetting urethane 30 is immediately heated through the mold 20, so that it can be heated for a short time (for example, 20 seconds). it can. As a result, the thermosetting urethane 30 can be cured in a short time.

また、この方法によれば、流し込んだ熱硬化性ウレタン３０に突起部２４が入り込む格好となっている。したがって、流し込んだ熱硬化性ウレタン３０の内部からも加熱できるため、より短時間の加熱で済ますことができる。   In addition, according to this method, the protrusion 24 enters the poured thermosetting urethane 30. Therefore, since it can heat also from the inside of the thermosetting urethane 30 poured, it can be done by heating for a shorter time.

上述した内容は、あくまでも本発明の一実施の形態に関するものであって、本発明が上記内容に限定されることを意味するものではない。
実施例では、硬化した熱硬化性ウレタン３０が逆凹状に成形される形態を説明した（図５参照）。しかし、これに限定されるものでなく、図６に示すように、硬化した熱硬化性ウレタン３０が逆三角形状に成形される形態でも構わない。 The contents described above are only related to one embodiment of the present invention, and do not mean that the present invention is limited to the above contents.
In the embodiment, the form in which the cured thermosetting urethane 30 is formed in a reverse concave shape has been described (see FIG. 5). However, the present invention is not limited to this, and as shown in FIG. 6, the cured thermosetting urethane 30 may be formed in an inverted triangular shape.

また、実施例では、金型２０をヒータ２２により加熱する形態を説明した。しかし、これに限定されるものでなく、金型２０を誘導加熱により加熱する形態でも構わない。   In the embodiment, the embodiment in which the mold 20 is heated by the heater 22 has been described. However, the present invention is not limited to this, and the mold 20 may be heated by induction heating.

また、実施例では、駆動源により金型２０を製品４０に押し当てる形態を説明した。しかし、これに限定されるものでなく、駆動源により製品４０を金型２０に押し当てる形態でも構わない。その場合、製品４０は、製品４０自身がシリンダ等の駆動源（図示しない）を介して金型２０に押し当て可能に構成されている。   Moreover, in the Example, the form which presses the metal mold | die 20 against the product 40 with the drive source was demonstrated. However, the present invention is not limited to this, and the product 40 may be pressed against the mold 20 by a driving source. In that case, the product 40 is configured such that the product 40 itself can be pressed against the mold 20 via a drive source (not shown) such as a cylinder.

２０ 金型
２０ａ キャビティ
２２ ヒータ（加熱手段）
３０ 熱硬化性ウレタン
４０ 製品


20 Mold 20a Cavity 22 Heater (heating means)
30 Thermosetting urethane 40 products


Claims (2)

加熱により硬化する熱硬化性ウレタンの硬化方法であって、
加熱手段を有する金型のキャビティに熱硬化性ウレタンを流し込む流込工程と、
流込工程により熱硬化性ウレタンをキャビティに流し込んだ金型を製品に押し当てる、または流込工程により熱硬化性ウレタンをキャビティに流し込んだ金型に製品を押し当てる押当工程と、
押当工程により製品に押し当てた金型または製品を押し当てた金型を加熱手段により加熱する加熱工程と、を備えていることを特徴とする熱硬化性ウレタンの硬化方法。 A method of curing a thermosetting urethane that cures by heating,
A pouring step of pouring thermosetting urethane into a cavity of a mold having a heating means;
A pressing process in which the mold in which the thermosetting urethane is poured into the cavity by the casting process is pressed against the product, or the product is pressed in the mold in which the thermosetting urethane is poured into the cavity by the casting process;
And a heating step of heating the mold pressed against the product by the pressing step or the mold pressed against the product by a heating means. 請求項１に記載の熱硬化性ウレタンの硬化方法であって、
キャビティの内面は、その一部がキャビティに流し込んだ熱硬化性ウレタンに入り込み可能に突起状に形成されていることを特徴とする熱硬化性ウレタンの硬化方法。


A method for curing a thermosetting urethane according to claim 1,
A method for curing a thermosetting urethane, characterized in that the inner surface of the cavity is formed in a protruding shape so that a part thereof can enter the thermosetting urethane poured into the cavity.


JP2012063481A 2012-03-21 2012-03-21 Method of curing thermosetting urethane Expired - Fee Related JP5902011B2 (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219767A (en) * 1975-08-08 1977-02-15 Tsuchiya Seisakusho Process for forming seal surface of cover packing for air filter
JPS60179214A (en) * 1984-02-28 1985-09-13 Inoue Mtp Co Ltd Manufacture of decorative molding
JPS61211007A (en) * 1985-03-15 1986-09-19 Kojima Press Co Ltd Manufacture of molded body
JPH05269773A (en) * 1992-03-27 1993-10-19 Sekisui Chem Co Ltd Production of coated molded product
JPH06155586A (en) * 1992-11-20 1994-06-03 Bridgestone Corp Thermal press molding metal mold
JP2004338260A (en) * 2003-05-16 2004-12-02 Kuraray Co Ltd Set die for engaging member for mold-in molding, and manufacturing method for resin molded body using the same
JP2008213160A (en) * 2007-02-28 2008-09-18 Inoac Corp Polyurethane foaming mold
JP2011000783A (en) * 2009-06-18 2011-01-06 Honda Motor Co Ltd Method for manufacturing molded article, apparatus for manufacturing the same and interior material for automobile using molded article

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219767A (en) * 1975-08-08 1977-02-15 Tsuchiya Seisakusho Process for forming seal surface of cover packing for air filter
JPS60179214A (en) * 1984-02-28 1985-09-13 Inoue Mtp Co Ltd Manufacture of decorative molding
JPS61211007A (en) * 1985-03-15 1986-09-19 Kojima Press Co Ltd Manufacture of molded body
JPH05269773A (en) * 1992-03-27 1993-10-19 Sekisui Chem Co Ltd Production of coated molded product
JPH06155586A (en) * 1992-11-20 1994-06-03 Bridgestone Corp Thermal press molding metal mold
JP2004338260A (en) * 2003-05-16 2004-12-02 Kuraray Co Ltd Set die for engaging member for mold-in molding, and manufacturing method for resin molded body using the same
JP2008213160A (en) * 2007-02-28 2008-09-18 Inoac Corp Polyurethane foaming mold
JP2011000783A (en) * 2009-06-18 2011-01-06 Honda Motor Co Ltd Method for manufacturing molded article, apparatus for manufacturing the same and interior material for automobile using molded article

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