JPH08150635A - Die for forming decorative inmold - Google Patents
Die for forming decorative inmoldInfo
- Publication number
- JPH08150635A JPH08150635A JP29683294A JP29683294A JPH08150635A JP H08150635 A JPH08150635 A JP H08150635A JP 29683294 A JP29683294 A JP 29683294A JP 29683294 A JP29683294 A JP 29683294A JP H08150635 A JPH08150635 A JP H08150635A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- die
- cavity
- film
- outer peripheral
- 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.)
- Pending
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、プラスチックの成形と
絵付けとを同時に行う加飾インモールド成形用金型の改
善に係り、より詳しくは、加飾成形品の品質と生産性と
に優れる加飾インモールド成形用金型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a decorative in-mold molding die for simultaneously molding and painting a plastic. More specifically, it is excellent in the quality and productivity of the decorative molded product. The present invention relates to a decorative in-mold molding die.
【０００２】[0002]
【従来の技術】従来から、インモールド加飾用のフィル
ム（転写フィルムあるいはラミネートフィルム）を金型
のキャビティ内に配設し、このフィルムが配設された金
型のキャビティ内にプラスチックを射出して、プラスチ
ックの成形と絵付けとを同時に行っている。そして、成
形品の形状が複雑であったり、深い絞りがあったりする
場合には、金型を真空成形金型として利用してフィルム
を予備成形した後、予備成形体を金型のキャビティに配
設したまま型締めをしてプラスチックの射出を行ってい
る。また、成形品の形状があまり複雑でなく、深い絞り
もない場合には、単にフィルムを金型のキャビティに配
設して型締めをし、真空引きでフィルムをキャビティ面
に密着固定させた後にプラスチックを射出成形してい
る。2. Description of the Related Art Conventionally, a film for in-mold decoration (transfer film or laminated film) is placed in a mold cavity, and plastic is injected into the mold cavity in which the film is placed. , Plastic molding and painting are done at the same time. If the shape of the molded product is complicated or if there is deep drawing, the mold is used as a vacuum molding mold to preform the film, and then the preform is placed in the cavity of the mold. The mold is clamped as it is and the plastic is injected. Also, if the shape of the molded product is not so complicated and there is no deep drawing, simply dispose the film in the cavity of the mold and clamp it, and after vacuuming the film to closely fix it to the cavity surface. Injection molded plastic.
【０００３】プラスチックの成形と絵付けとを同時に行
う金型としては、例えば特公昭５０−１９１３２号公報
に示されているものがある。これは、雌型の金型に複数
の真空吸引孔を設け、この金型のキャビティ側にフィル
ムを密接させてキャビティ内の空気を真空引きするもの
であるが、真空引きによりフィルムに真空吸引孔の痕跡
が生じる結果、成形品にも痕跡が生じ、特に外表面の全
面が加飾面となる成形品では商品価値が著しく低下する
という問題があった。そこで、フィルムに痕跡を発生さ
せないようにする構成の金型が開発された。このような
金型は、例えば、実公昭６３−２１３８６号公報、特開
平１−１７６５３０号公報および特開平１−２６３０１
３号公報に開示おいてされている。As a mold for simultaneously molding and painting a plastic, there is, for example, one disclosed in Japanese Patent Publication No. 50-19132. In this method, a plurality of vacuum suction holes are provided in a female mold, and the film is brought into close contact with the cavity side of this mold to evacuate the air in the cavity. As a result, the molded product also has a trace, and there is a problem that the product value is remarkably reduced particularly in a molded product in which the entire outer surface is a decorative surface. Therefore, a mold having a structure that does not generate traces on the film has been developed. Such molds are disclosed, for example, in Japanese Utility Model Publication No. 63-21386, Japanese Patent Application Laid-Open No. 1-175630, and Japanese Patent Application Laid-Open No. 1-26301.
It is disclosed in Japanese Patent Laid-Open No.
【０００４】先ず、実公昭６３−２１３８６号公報に示
されている金型は、雄金型に熱風を噴射する噴射孔を設
け、雌型の金型のキャビティの外側端面に密接されたフ
ィルムの外周面部を、雄金型に摺動自在に外嵌されてな
る枠体で押圧すると共に、前記噴射孔から熱風を噴射し
て変形させることによって、フィルムを金型のキャビテ
ィの面に密着させるものである。First, in the mold disclosed in Japanese Utility Model Publication No. 63-21386, a male mold is provided with an injection hole for injecting hot air, so that a film close to the outer end surface of the cavity of the female mold. A film is brought into close contact with the surface of the cavity of the mold by pressing the outer peripheral surface part with a frame body slidably fitted to the male mold, and spraying hot air from the injection holes to deform the film. Is.
【０００５】次に、特開平１−１７６５３０号公報及び
特開平１−２６３０１３号公報に示されている金型は上
記金型と類似のもので、雌型の金型のキャビティの少な
くとも一部を通気性素材で構成し、この金型のキャビテ
ィ側の外周端面に密接されたフィルムを雄金型の外周部
で押圧すると共に、前記金型に設けられた排気孔から真
空引きして、フィルムをこの金型のキャビティの面に密
着させるものである。つまり、通気性素材の通気孔が極
めて微細なために、キャビティの面に密着されたフィル
ムに痕跡が生じるようなことがないので、表面に痕跡の
ない品質の優れた成形品を成形することができる。Next, the molds disclosed in JP-A-1-176530 and JP-A-1-263013 are similar to the above mold, and at least a part of the cavity of the female mold is used. The film is made of breathable material and is pressed against the outer peripheral end face of the mold on the cavity side by the outer peripheral part of the male mold, and the film is evacuated from the exhaust holes provided in the mold to remove the film. It is to be brought into close contact with the surface of the cavity of this mold. In other words, since the ventilation holes of the breathable material are extremely fine, there will be no traces on the film adhered to the cavity surface, so it is possible to mold a molded product of excellent quality with no traces on the surface. it can.
【０００６】[0006]
【発明が解決しようとする課題】上記従来技術に係る金
型は何れもそれなりに有用であるが、それぞれ下記に記
載するような問題点を持っている。先ず、前者の実公昭
６３−２１３８６号公報に示されている金型は、プラス
チックの射出中において、雄金型に設けられた熱風を噴
射する噴射孔に射出中のプラスチックが侵入しないよう
に、噴射孔内の圧力の調整を要し、装置の複雑化に伴っ
て設備費的に不利になるのに加えて、成形品の形状が複
雑であったり、また絞りが深い場合には、フィルムの金
型のキャビティ内面への圧着に長時間を要するので生産
性が悪く、また密着性も劣るので絵付け状態に悪影響を
及ぼすという解決すべき課題がある。All of the above-mentioned conventional molds are useful as they are, but each has the following problems. First, in the former mold, which is disclosed in Japanese Utility Model Publication No. 63-21386, during injection of plastic, the plastic being injected does not enter the injection holes for injecting hot air provided in the male mold, It requires adjustment of the pressure in the injection hole, which is disadvantageous in terms of equipment cost due to the complexity of the device.In addition, if the shape of the molded product is complicated or the drawing is deep, the film Since it takes a long time for the die to be pressed against the inner surface of the cavity, the productivity is poor, and the adhesiveness is poor, which adversely affects the painting state.
【０００７】次に、後者の特開平１−１７６５３０号公
報及び特開平１−２６３０１３号公報に示されている金
型は、キャビティの一部のみを構成する通気性素材の通
気性が十分、かつキャビティとインモールド加飾用フィ
ルムとのシール性が十分である場合には、サクション側
からの吸引力が強いのでフィルムを金型のキャビティ面
に短時間で、しかも良く密着させることが可能である
が、フィルムに通気性素材と雌金型本体との合わせ部に
基づくライン状の痕跡が残される。フィルムに対するラ
イン状の痕跡の発生を防ぐためには、キャビティの全体
を通気性素材で構成すれば良い。しかしながら、外側か
らの大気の侵入を防ぐために通気性素材を雌金型本体に
嵌合する必要があり、この雌金型本体が大型にならざる
を得ないのに加えて、フィルムとキャビティとのシール
性も悪くなり、このフィルムをキャビティの内面に密着
させるための真空引きに要する時間も長くなるので、加
飾成形品の生産性に悪影響があり、その実用性に問題が
ある。Next, in the molds disclosed in the latter Japanese Patent Laid-Open Nos. 1-175630 and 1-263013, the breathable material forming only a part of the cavity has sufficient breathability, and When the sealing property between the cavity and the in-mold decorating film is sufficient, the suction force from the suction side is strong, so that the film can be closely adhered to the cavity surface of the mold in a short time. However, a linear trace is left on the film due to the mating portion between the breathable material and the female die body. In order to prevent the generation of linear traces on the film, the entire cavity may be made of a breathable material. However, in order to prevent the invasion of air from the outside, it is necessary to fit a breathable material to the female mold body, and this female mold body must be large in size. Since the sealing property also deteriorates and the time required for evacuation to bring the film into close contact with the inner surface of the cavity becomes long, the productivity of the decorative molded product is adversely affected and its practicality is a problem.
【０００８】従って、本発明は、金型を大型にせず、し
かも短時間に吸引してフィルムをキャビティの内面にラ
イン状の痕跡を残すことなく密着させ得る加飾成形品の
生産性に優れる加飾インモールド成形用金型の提供を目
的とする。Therefore, the present invention is excellent in the productivity of the decorative molded product which does not make the mold large and which can suck the film in a short time to adhere the film to the inner surface of the cavity without leaving a linear trace. It is intended to provide a decorative in-mold molding die.
【０００９】[0009]
【課題を解決するための手段】本発明は、上記実情に鑑
みてなされたものであって、従って本発明の請求項１に
係る加飾インモールド成形用金型の構成は、通気性素材
で金型を形成し、該金型における外周面およびキャビテ
ィー面ならびにサクション面側における外周縁部の予め
設定した所定幅に封孔処理を施してなることを特徴とす
る。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and therefore the structure of the decorative in-mold molding die according to claim 1 of the present invention is a breathable material. It is characterized in that a mold is formed, and a sealing treatment is applied to a preset predetermined width of the outer peripheral surface, the cavity surface and the outer peripheral edge of the suction surface of the mold.
【００１０】また、本発明の請求項２に係る加飾インモ
ールド成形用金型の構成は、請求項１に記載の加飾イン
モールド成形用金型において、前記金型のサクション面
側に凹所を設けたことを特徴とする。According to a second aspect of the present invention, there is provided a decorative in-mold molding die according to the first aspect, wherein the decorative in-mold molding die is concave on the suction surface side of the mold. It is characterized by having a place.
【００１１】[0011]
【作用】本発明の請求項１に係る加飾インモールド成形
用金型によれば、金型が通気性素材で形成され、そして
この金型における外周面およびキャビティー面ならびに
サクション面側における外周縁部の予め設定した所定幅
に封孔処理が施されているので、サクション側からキャ
ビティー側の空気を真空引きする際に、金型における外
周面およびキャビティー面ならびにサクション面側にお
ける外周縁部の予め設定した所定幅の部位から金型内に
空気が侵入することがないので、金型の全体を雌金型本
体に嵌合する必要がない。According to the decorated in-mold molding die according to the first aspect of the present invention, the mold is made of a breathable material, and the outer peripheral surface, the cavity surface and the suction surface side of the mold. Since the peripheral part is sealed to a preset width, when vacuuming the air from the suction side to the cavity side, the outer peripheral edge and cavity surface of the mold and the outer peripheral edge of the suction surface side Since air does not enter the mold from a part of a predetermined width set in advance, it is not necessary to fit the entire mold to the female mold body.
【００１２】また、本発明の請求項２に係る加飾インモ
ールド成形用金型によれば、金型のサクション側に凹所
が設けられていて、キャビティと凹所との間の肉厚が薄
くなり、サクション側とキャビティ側との間の空気通路
が短くなるので、空気の流路抵抗が小さくなる。According to the decorative in-mold molding die according to the second aspect of the present invention, the recess is provided on the suction side of the mold, and the wall thickness between the cavity and the recess is small. Since it becomes thin and the air passage between the suction side and the cavity side becomes short, the flow path resistance of air becomes small.
【００１３】[0013]
【実施例】以下、本発明の実施例１に係る加飾インモー
ルド成形用金型を、その模式的断面図の図１を参照して
説明すると、符号１は雌型の金型であって、この金型１
は平均粒径が１００μｍのステンレス系ガスアトマイズ
粉をＨＩＰ装置による高温加圧成形で得られた通気性が
約１ｃｃ／ｃｍ2 ｓ（差圧；約１０5 Ｐａ、厚さ；７．
５ｍｍ）の通気性素材で形成されており、この金型１の
外寸は約１８０ｍｍ×１７０ｍｍ×５５ｍｍで、一方側
には約１１０ｍｍ×１２０ｍｍ×５ｍｍのキャビティ１
ａが設けられている。そして、金型１のキャビティ１ａ
の内面を鏡面研磨すると共に、金型１の外周面およびキ
ャビティー１ａ面ならびにサクション面側における外周
縁部の予め設定した所定幅に封孔処理を施した。つま
り、塩化ビニール樹脂を塗布して、通気孔を塞ぐ膜厚１
００μｍの密封層２を形成した。EXAMPLE A decorative in-mold molding die according to Example 1 of the present invention will be described below with reference to a schematic sectional view of FIG. , This mold 1
Has a gas permeability of about 1 cc / cm 2 s (differential pressure; about 10 5 Pa, thickness; obtained by high-temperature pressure molding of a stainless steel gas atomized powder having an average particle size of 100 μm by a HIP device).
5 mm) of breathable material, the outer dimensions of this mold 1 are about 180 mm x 170 mm x 55 mm, and one side is about 110 mm x 120 mm x 5 mm cavity 1
a is provided. And the cavity 1a of the mold 1
The inner surface of the mold was mirror-polished, and at the same time, the outer peripheral surface of the mold 1, the cavity 1a surface, and the outer peripheral edge portion on the suction surface side were sealed at a predetermined width. In other words, apply vinyl chloride resin to cover the air vents and the film thickness is 1
A 00 μm sealing layer 2 was formed.
【００１４】さらに、金型１のキャビティ１ａ側の外周
端面にシール溝１ｂを設け、このシール溝１ｂに、シー
ル部材３（ゴム製Ｏリング）を嵌着すると共に、このシ
ール部材３を介して、雄金型４による型締めによってイ
ンモールド加飾用のフィルムＦを押圧する構成とした。
つまり、この雄金型４に対して押圧手段としての機能を
持たせたものである。Further, a seal groove 1b is provided on the outer peripheral end surface of the mold 1 on the cavity 1a side, and a seal member 3 (rubber O-ring) is fitted into the seal groove 1b and the seal member 3 is interposed therebetween. The film F for in-mold decoration is pressed by the mold clamping with the male mold 4.
That is, this male die 4 is provided with a function as a pressing means.
【００１５】次いで、金型１が嵌合される嵌合部５ａを
有し、金型１の端面に相対する側にシール部材６が嵌着
されてなるシール溝５ｂを有すると共に、シール溝５ｂ
が設けられている面を彫り込んで形成されてなるサクシ
ョン側チャンバ５ｃを有する受け部材５の前記嵌合部５
ａに、金型１のサクション側を嵌合した。さらに、この
受け部材５の外側からサクション側チャンバ５ｃに連通
する真空引き用ポート５ｄには、図示しない真空ポンプ
に一端側が接続されてなる真空引き用ホースの他端側を
接続する構成とした。Next, there is a fitting portion 5a into which the die 1 is fitted, and a seal groove 5b into which a seal member 6 is fitted is provided on the side facing the end face of the die 1 and a seal groove 5b.
The fitting portion 5 of the receiving member 5 having the suction side chamber 5c formed by carving the surface provided with
The suction side of the mold 1 was fitted in a. Further, the vacuum suction port 5d communicating from the outside of the receiving member 5 to the suction side chamber 5c is connected to the other end of a vacuum suction hose whose one end is connected to a vacuum pump (not shown).
【００１６】なお、真空ポンプとしては、排気量９５Ｎ
ｌ／ｍｉｎの簡便なエゼクタ式真空発生器を用いた。ま
た、上記実施例では、シール溝５ｂを受け部材５の金型
１の端面に相対する側に設けたが、シール溝を金型１の
端面や外周面に設けたり、あるいは受け部材５の嵌合部
５ａの内側に周設しても、上記実施例と同等のシール機
能を付与することができる。The vacuum pump has a displacement of 95N.
A simple ejector type vacuum generator of 1 / min was used. Further, in the above embodiment, the seal groove 5b is provided on the side of the receiving member 5 facing the end surface of the die 1, but the seal groove is provided on the end surface or the outer peripheral surface of the die 1, or the receiving member 5 is fitted. Even if it is provided inside the joint portion 5a, a sealing function equivalent to that of the above embodiment can be provided.
【００１７】以下、上記加飾インモールド成形用金型の
作用態様を説明すると、真空ポンプでサクシヨン側チャ
ンバ５ｃ内の空気を吸引すると、キャビティ１ａ内の空
気が金型１の微細な通気孔を通して真空引きされ、フィ
ルムＦは変形してキャビティ１ａの内面に吸着・固着さ
れるが、通気性素材からなる金型１の外周面およびキャ
ビティー１ａ面ならびにサクション面側における外周縁
部の予め設定した所定幅に通気孔を塞ぐ密封層２が形成
され、キャビティ１ａ側とキャビティ１ａの反対側のサ
クション側チャンバ５ｃ側のそれぞれはシール部材３，
６により大気中からの空気の侵入が防止される構成にな
っているので、真空ポンプによる約５ｓの真空引きで、
フィルムＦをキャビティ１ａの内面に確実に吸着・固着
させることができた。因みに、金型１の外周面に密封層
２を形成しなかった場合には、真空引きに約５０ｓもの
長時間を要することを確認し、金型１の外周面への密封
層２の形成が、真空引き所要時間の短縮に極めて効果的
であることを確認した。The mode of operation of the decorative in-mold molding die will be described below. When the air in the suction side chamber 5c is sucked by the vacuum pump, the air in the cavity 1a passes through the minute vent holes of the die 1. The film F is evacuated and deformed to be adsorbed and fixed to the inner surface of the cavity 1a. However, the outer peripheral surface of the mold 1 made of a gas permeable material, the cavity 1a surface, and the outer peripheral edge portion on the suction surface side are set in advance. A sealing layer 2 for closing the ventilation hole is formed to a predetermined width, and the cavity 1a side and the suction side chamber 5c side opposite to the cavity 1a are respectively provided with the seal member 3,
Since 6 is configured to prevent the invasion of air from the atmosphere, it is possible to draw a vacuum for about 5 s with a vacuum pump.
The film F could be reliably adsorbed and fixed to the inner surface of the cavity 1a. By the way, if the sealing layer 2 was not formed on the outer peripheral surface of the mold 1, it was confirmed that evacuation requires a long time of about 50 s, and the sealing layer 2 was formed on the outer peripheral surface of the mold 1. It was confirmed that it was extremely effective in shortening the time required for evacuation.
【００１８】このように、本実施例によれば、実公昭６
３−２１３８６号公報に示されている従来例のように、
プラスチックの射出中において、雄金型に設けられた熱
風を噴射する噴射孔に射出中のプラスチックが侵入しな
いように噴射孔内の圧力の調整をするまでもなく、極め
て短時間でフィルムＦをキャビティ１ａの内面に吸着・
固着させることができる。また、上記の通り、金型１の
外周面に通気孔を塞ぐ密封層２が形成されていて、特開
平１−１７６５３０号公報及び特開平１−２６３０１３
号公報に示されている従来例のように、金型１の全体を
雌金型本体に嵌合する必要がないので金型１をコンパク
トにすることができ、しかもライン状の痕跡がない加飾
された高品質のプラスチックの成形品を得ることができ
る。As described above, according to the present embodiment, the actual publication 6
As in the conventional example disclosed in JP-A-3-21386,
During the injection of plastic, the pressure in the injection hole does not need to be adjusted so that the plastic being injected does not enter the injection hole for injecting hot air provided in the male mold, and the film F can be cavityd in an extremely short time. Adsorbed on the inner surface of 1a
Can be fixed. Further, as described above, the sealing layer 2 that closes the ventilation hole is formed on the outer peripheral surface of the mold 1, and is disclosed in JP-A-1-176530 and JP-A-1-263013.
It is not necessary to fit the entire mold 1 to the female mold body as in the prior art example disclosed in Japanese Patent Publication No. JP-A-2003-264, so that the mold 1 can be made compact and there is no linear trace. It is possible to obtain a decorated high-quality molded plastic product.
【００１９】本発明の実施例２に係る加飾インモールド
成形用金型を、その模式的断面図の図２を参照しなが
ら、上記実施例１と同一のもの並びに同一機能を有する
ものを同一符号を以て説明する。但し、本実施例が上記
実施例１と相違するところは、フィルムＦをシール部材
３を介して金型１のキャビティ１ａの外周端面に押圧す
る押圧手段として、実公昭６３−２１３８６号公報に示
されている従来例と同様に、雄金型４に摺動自在に外嵌
され、シリンダで押し引きされる枠体７を用いたところ
にあり、押圧手段が相違するだけだから本実施例２は上
記実施例１と同効である。The decorative in-mold molding die according to the second embodiment of the present invention is the same as that of the first embodiment and has the same function as that of the first embodiment with reference to FIG. A description will be given with reference numerals. However, the difference of this embodiment from the first embodiment is shown in Japanese Utility Model Publication No. 63-21386 as a pressing means for pressing the film F against the outer peripheral end surface of the cavity 1a of the mold 1 through the seal member 3. As in the conventional example, the frame 7 is slidably fitted onto the male mold 4 and pushed and pulled by the cylinder. The second embodiment is different from the first embodiment because only the pressing means is different. The effect is the same as in Example 1 above.
【００２０】本発明の実施例３に係る加飾インモールド
成形用金型を、その模式的断面図の図３を参照しなが
ら、上記実施例と同一のもの並びに同一機能を有するも
のを同一符号を以て以下に説明する。但し、本実施例が
上記実施例１と相違するところは、同図から良く理解さ
れるように、主として通気性素材からなる金型１の構成
の相違にある。With respect to the decorative in-mold molding die according to the third embodiment of the present invention, with reference to FIG. 3 which is a schematic cross-sectional view thereof, the same parts as those in the above-mentioned embodiment and those having the same function are designated by the same reference numerals. This will be described below. However, the difference between this embodiment and the first embodiment is the difference in the structure of the mold 1 which is mainly made of a breathable material, as is well understood from the figure.
【００２１】即ち、前記金型１のサクション側に、サク
ション側チャンバとしての機能を有する凹所１ｃを設け
てキャビティ１ａと凹所１ｃとの間の肉厚を３０ｍｍ
（なお、実施例１、実施例２では５０ｍｍ）としたもの
である。従って、本実施例３によれば、キャビティ１ａ
と凹所１ｃとの間の肉厚が薄いので、キャビティ１ａ側
から凹所１ｃ側への空気通路が短く、空気の流路抵抗が
小さくなる結果、真空引き時間は高々３ｓであり、上記
実施例１又は２に比較して、成形品の生産性を大幅に向
上させることが可能になる。That is, a recess 1c having a function as a suction side chamber is provided on the suction side of the mold 1, and a wall thickness between the cavity 1a and the recess 1c is 30 mm.
(It should be noted that it is set to 50 mm in Examples 1 and 2). Therefore, according to the third embodiment, the cavity 1a
Since the wall thickness between the recess 1c and the recess 1c is thin, the air passage from the cavity 1a side to the recess 1c side is short, and the air flow resistance becomes small. As a result, the evacuation time is at most 3s. As compared with Example 1 or 2, it becomes possible to significantly improve the productivity of the molded product.
【００２２】本発明の実施例４に係る加飾インモールド
成形用金型を、その模式的断面図の図４を参照しなが
ら、上記実施例３と同一のもの並びに同一機能を有する
ものを同一符号を以て説明する。但し、本実施例が上記
実施例３と相違するところは、上記実施例２と同様に、
フィルムＦをシール部材３を介して金型１のキャビティ
１ａの外周端面に押圧する押圧手段として、雄金型４に
摺動自在に外嵌され、シリンダで押し引きされる枠体７
を用いたところにあり、押圧手段が相違するだけだか
ら、本実施例４は上記実施例３と同効である。The decorative in-mold molding die according to the fourth embodiment of the present invention is the same as that of the third embodiment and has the same function as that of the third embodiment with reference to FIG. A description will be given with reference numerals. However, the difference of this embodiment from the above-mentioned third embodiment is similar to the above-mentioned second embodiment.
A frame 7 that is slidably fitted on the male mold 4 and is pushed and pulled by a cylinder as a pressing unit that presses the film F against the outer peripheral end surface of the cavity 1a of the mold 1 via the seal member 3.
The present embodiment 4 has the same effect as the above-mentioned embodiment 3 because only the pressing means is different.
【００２３】以上では、何れも金型１の外周面の密封層
２の形成に塩化ビニール樹脂を用いた例について説明し
たが、例えば、エポキシ系樹脂等も用いることができ、
メッキを施すこともでき、またウッドメタル等の低融金
属を塗布することもできる。さらに、金型１の外周面に
高粘度ペーストを塗布し、外周面から１００μｍ以上含
浸（キャビティ側あるいは反キャビティ側から吸引しな
がら塗布すると、ペーストは効果的に含浸される。）さ
せることもできる。金型１の外周面にペーストを含浸さ
せる封孔手段は、膜厚１００μｍ程度の外形寸法変化が
問題となる場合に極めて有効である。従って、密封層２
の形成は特に塩化ビニール樹脂に限定されるものではな
い。また、以上では、シール部材３，６を用いたが、金
型１の両端面を鏡面仕上げすると、端面からの空気の侵
入がそれなりに阻止されるので、必ずしもシール部材
３，６を用いる必要がない。In the above description, an example in which a vinyl chloride resin is used for forming the sealing layer 2 on the outer peripheral surface of the mold 1 has been described, but, for example, an epoxy resin can also be used,
It is also possible to apply plating, or to apply a low-melting metal such as wood metal. Furthermore, it is also possible to apply a high-viscosity paste to the outer peripheral surface of the mold 1 and impregnate it by 100 μm or more from the outer peripheral surface (if the paste is applied while sucking from the cavity side or the anti-cavity side, the paste is effectively impregnated). . The sealing means for impregnating the outer peripheral surface of the mold 1 with the paste is extremely effective when a change in the outer dimension of a film thickness of about 100 μm poses a problem. Therefore, the sealing layer 2
The formation of is not limited to vinyl chloride resin. Further, in the above description, the seal members 3 and 6 are used. However, if both end surfaces of the mold 1 are mirror-finished, the invasion of air from the end surfaces is blocked to some extent. Therefore, it is not always necessary to use the seal members 3 and 6. Absent.
【００２４】[0024]
【発明の効果】以上述べたように、本発明の請求項１又
は２に係る加飾インモールド成形用金型によれば、通気
性素材で形成した金型の外周面およびキャビティー面な
らびにサクション面側における外周縁部の予め設定した
所定幅に封孔処理が施されていてサクション側からの真
空引きに際して外周部から空気が侵入しないので、この
金型を雌金型本体に嵌合する必要がなくなると共に、噴
射孔内の圧力調整に要する設備が不要になり、この金型
をコンパクトにすることができる。しかも、真空引きす
るだけで短時間でキャビティの表面に吸着・固着させ、
ライン状の痕跡のないプラスチックからなる加飾成形品
を高能率で生産することができるので、加飾インモール
ド成形用金型のイニシャルコストの低減と、品質の優れ
た加飾成形品の生産性の向上に対して多大な効果があ
る。As described above, according to the decorative in-mold molding die according to the first or second aspect of the present invention, the outer peripheral surface and the cavity surface of the mold and the suction surface formed of the air-permeable material. It is necessary to fit this mold to the female mold body because the outer peripheral edge on the surface side is sealed to a preset width and air does not enter from the outer peripheral part when vacuuming from the suction side. In addition, the equipment required for adjusting the pressure in the injection hole becomes unnecessary, and the mold can be made compact. Moreover, it can be sucked and fixed to the surface of the cavity in a short time just by drawing a vacuum.
Since it is possible to produce decorative molded products made of plastic without line-shaped traces with high efficiency, it is possible to reduce the initial cost of the decorative in-mold molding die and the productivity of decorative molded products with excellent quality. Has a great effect on the improvement of.
【図１】本発明の実施例１に係る加飾インモールド成形
用金型の模式的断面図である。FIG. 1 is a schematic cross-sectional view of a decorative in-mold molding die according to Example 1 of the present invention.
【図２】本発明の実施例２に係る加飾インモールド成形
用金型の模式的断面図である。FIG. 2 is a schematic cross-sectional view of a decorative in-mold molding die according to Example 2 of the present invention.
【図３】本発明の実施例３に係る加飾インモールド成形
用金型の模式的断面図である。FIG. 3 is a schematic cross-sectional view of a decorative in-mold molding die according to Example 3 of the present invention.
【図４】本発明の実施例４に係る加飾インモールド成形
用金型の模式的断面図である。FIG. 4 is a schematic cross-sectional view of a decorative in-mold molding die according to Example 4 of the present invention.
１…金型，１ａ…キャビティ，１ｂ…シール溝，１ｃ…
凹所 ２…密封層 ３…シール部材 ４…雄金型 ５…受け部材，５ａ…嵌合部，５ｂ…シール溝，５ｃ…
サクション側チャンバ，５ｄ…真空引き用ポート ６…シール部材 ７…枠体 Ｆ…インモールド加飾用のフィルム1 ... Mold, 1a ... Cavity, 1b ... Seal groove, 1c ...
Recess 2 ... Sealing layer 3 ... Sealing member 4 ... Male mold 5 ... Receiving member, 5a ... Fitting portion, 5b ... Sealing groove, 5c ...
Suction side chamber, 5d ... Port for vacuuming 6 ... Sealing member 7 ... Frame F ... Film for in-mold decoration
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岡野 義広 兵庫県神戸市西区高塚台１丁目５番５号 株式会社神戸製鋼所神戸総合技術研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshihiro Okano Inventor Yoshihiro Okano 1-5-5 Takatsukadai, Nishi-ku, Kobe-shi, Hyogo Kobe Steel Works, Ltd. Kobe Research Institute
Claims (2)
ける外周面およびキャビティー面ならびにサクション面
側における外周縁部の予め設定した所定幅に封孔処理を
施してなることを特徴とする加飾インモールド成形用金
型。1. A mold is formed from a breathable material, and a sealing treatment is applied to a predetermined width of an outer peripheral surface of the mold, a cavity surface, and an outer peripheral edge portion on the suction surface side. Decorative in-mold molding dies.
たことを特徴とする請求項１に記載の加飾インモールド
成形用金型。2. The decorative in-mold molding die according to claim 1, wherein a recess is provided on the suction surface side of the die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29683294A JPH08150635A (en) | 1994-11-30 | 1994-11-30 | Die for forming decorative inmold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29683294A JPH08150635A (en) | 1994-11-30 | 1994-11-30 | Die for forming decorative inmold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08150635A true JPH08150635A (en) | 1996-06-11 |
Family
ID=17838741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29683294A Pending JPH08150635A (en) | 1994-11-30 | 1994-11-30 | Die for forming decorative inmold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08150635A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102700055A (en) * | 2012-05-14 | 2012-10-03 | 苏州施莱医疗器械有限公司 | Automatic needle stacking mechanism for needle bodies of blood sampling needles |
-
1994
- 1994-11-30 JP JP29683294A patent/JPH08150635A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102700055A (en) * | 2012-05-14 | 2012-10-03 | 苏州施莱医疗器械有限公司 | Automatic needle stacking mechanism for needle bodies of blood sampling needles |
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