JP4502172B2 - Method for molding transparent lid with synthetic resin pattern and mold used in the molding method - Google Patents

Method for molding transparent lid with synthetic resin pattern and mold used in the molding method Download PDF

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Publication number
JP4502172B2
JP4502172B2 JP2003097452A JP2003097452A JP4502172B2 JP 4502172 B2 JP4502172 B2 JP 4502172B2 JP 2003097452 A JP2003097452 A JP 2003097452A JP 2003097452 A JP2003097452 A JP 2003097452A JP 4502172 B2 JP4502172 B2 JP 4502172B2
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Prior art keywords
forming
mold
cavity
gate
lid
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JP2004299340A (en
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旭 甲斐
紀義 片岡
一男 鈴木
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Yoshino Kogyosho Co Ltd
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Yoshino Kogyosho Co Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、合成樹脂製の模様付き蓋状体をインサート成形により成形する方法と該成形方法で使用する金型に関する。
【０００２】
【従来の技術】
頂板の上面へ、シート材をインサート成形した蓋体、該蓋体の成形方法、および該蓋体成形に使用する金型が特許文献１に示されている。
【０００３】
【特許文献１】
特開２００２−２８３３８５号公報
【０００４】
【発明が解決しようとする課題】
透明蓋体の頂板下面へ模様を付設すれば、外観上その模様は透明な頂板を介して目視されることとなるため、頂板上面に付した模様と異って深みのある模様とすることが出来、又頂板下面へ他物が接することは少ないから、頂板上面へ付設した模様の場合と異り、摩擦等により模様が薄れたり、剥離するおそれがない。
【０００５】
よって透明蓋体の頂板下面への模様の付設が要望されるが、蓋体周壁が邪魔となるため、その頂板下面への印刷は困難であり、インサート成形することが考えられる。該頂板下面へのインサート成形を、頂板の上面形成用金型面の中央にゲートを設けて、該ゲートからキャビティ内への樹脂材料射出によって行えば、頂板の下面形成用金型部分の上面へ付着させたインサート成形用フィルムは樹脂材料射出によって下方へ押付けられて移動等することがなく、好都合ではあるが、このようにすると成品としての蓋体頂板の中央部にゲート跡が残り、外見上好ましくない。よってゲートは頂板外周面の一部ないし周壁外面の上端部へ設けることとなるが、このようにすると頂板下面形成用金型部分上面へ付着させた、上記インサート成形用フィルムが横ずれを生じ易い。
【０００６】
本発明は上記欠点を除去することを目的とした成形方法および該成形方法で使用する金型に関する。尚本発明において透明とは、半透明も含むものとする。又本発明において蓋状体とは、頂板外周から周壁を垂下する蓋体の他、頂板外周から周壁を垂下する台等を含むものとする。
【０００７】
【課題を解決するための手段】
第１の手段として、頂板２外周から周壁３を垂下する蓋状体６形成用のキャビティ１を固定金型１１と可動金型１２との間に有し、かつ該キャビティ外周面の上方一部にゲート７を設けた、蓋状体形成用金型において、
上記頂板２の下面形成用上面１３と、周壁３の内周面形成用外周面１４とを有する凸状金型部分１６を可動金型１２に設け、
上記ゲート７と対向する、凸状金型部分１６上面の外縁部分から上記キャビティ１下面と上記キャビティ１内周面との隅部分へ位置させてフランジ２１を起立させると共に、該フランジ２１上面を上記ゲート７上面の延長上に位置させ、又該フランジ内面へ当接させて凸状金型部分上面へ模様付きフィルム１９を付着させ、
該フィルムをインサート成形して透明蓋状体を形成することを特徴とする。
【０００８】
第２の手段として、頂板２外周から周壁３を垂下する蓋状体６形成用のキャビティ１を固定金型１１と可動金型１２との間に有し、かつ該キャビティ外周面の上方一部にゲート７を設けた、蓋状体形成用金型において、
上記頂板２の下面形成用上面１３と、周壁３の内周面形成用外周面１４とを有する凸状金型部分１６を可動金型１２に設け、
上記ゲート７に近い方の凸状金型部分１６の外縁部分と対向する、凸状金型部分１６上面の外縁部分から上記キャビティ１下面と上記キャビティ１内周面との隅部分へ位置させてフランジ２２を起立させると共に、該フランジ２２上面を上記ゲート７上面の延長上に位置させ、又該フランジ内面へ当接させて凸状金型部分上面へ模様付きフィルム１９を付着させ、
該フィルムをインサート成形して透明蓋状体を形成することを特徴とする。
【０００９】
第３の手段として、頂板２外周から周壁３を垂下する蓋状体６形成用のキャビティ１を固定金型１１と可動金型１２との間に有し、かつ該キャビティ外周面の上方一部にゲート７を設けた、蓋状体形成用金型において、
上記頂板２の下面形成用上面１３と、周壁３の内周面形成用外周面１４とを、有する凸状金型部分１６を可動金型１２に設け、
該凸状金型部分の上面１３全周から上記キャビティ１下面と上記キャビティ１内周面との隅部分へ位置させてフランジ１７を起立させると共に、該フランジ１７上面を上記ゲート７上面を含む平面内へ位置させ、該フランジ内面へ外周面を当接させて凸状金型部分上面へ模様付きフィルム１９を付着させ、該フィルムをインサート成形して透明蓋状体６を形成する
ことを特徴とする。
【００１０】
第４の手段として、上記第１、第２、又は第３の手段を有すると共に上記凸状金型部分16上面13へ開口するバキューム通路15を穿設し、該凸状金型上面へ載置させた模様付きフィルム19を吸着させてインサート成形する。
【００１１】
第５の手段として、頂板２外周から周壁３を垂下する蓋状体６形成用のキャビティ１を固定金型１１と可動金型１２との間に有し、かつ該キャビティ外周面の上方一部にゲート７を設けた、蓋状体形成用金型において、
上記頂板２の下面形成用上面１３と、周壁３の内周面形成用外周面１４とを、有する凸状金型部分１６を可動金型１２に設け、
上記ゲート７と対向する、凸状金型部分１６上面の外縁部分から、上記凸状金型部分１６の上面へ載置されてインサートされる、模様付きフィルム１９のゲート側端面当接用のフランジ２１を上記キャビティ１下面と上記キャビティ１内周面との隅部分へ位置させて起立させると共に、該フランジ２１上面を上記ゲート７上面の延長上に位置させた
ことを特徴とする。
【００１２】
第６の手段として、頂板２外周から周壁３を垂下する蓋状体６形成用のキャビティ１を固定金型１１と可動金型１２との間に有し、かつ該キャビティ外周面の上方一部にゲート７を設けた、蓋状体形成用金型において、
上記頂板２の下面形成用上面１３と、周壁３の内周面形成用外周面１４とを、有する凸状金型部分１６を可動金型１２に設け、
上記ゲート７に近い方の凸状金型部分１６の外縁部分と対向する、凸状金型部分１６上面の外縁部分から、上記凸状金型部分１６の上面へ載置されてインサート成形される、模様付きフィルム１９のゲート側と対向する側の端面当接用のフランジ２２を、上記キャビティ１下面と上記キャビティ１内周面との隅部分へ位置させて起立させると共に、該フランジ２２上面を上記ゲート７上面の延長上に位置させた
ことを特徴とする。
【００１３】
第７の手段として、頂板２外周から周壁３を垂下する蓋状体６形成用のキャビティ１を固定金型１１と可動金型１２との間に有し、かつ該キャビティ外周面の上方一部にゲート７を設けた、蓋状体形成用金型において、
上記頂板２の下面形成用上面１３と、周壁３の内周面形成用外周面１４とを、有する凸状金型部分１６を可動金型１２に設け、
該凸状金型部分の上面１３全周から、該上面へ載置されてインサート成形される、模様付きフィルム１９の全周当接用のフランジ１７を、上記キャビティ１下面と上記キャビティ１内周面との隅部分へ位置させて起立させると共に、該フランジ１７上面を上記ゲート７上面を含む平面内へ位置させた
ことを特徴とする。
【００１４】
第８の手段として、上記第５、第６、又は第７の手段を有すると共に上記凸状金型部分16上面13へ開口するバキューム通路15を有する。
【００１５】
【発明の実施の形態】
以下図面について説明すると、１は、図６、図８が示すような、頂板２外周から周壁３を垂下し、該周壁の左右両側壁3a後端から軸受板４，４を垂下し、これ等軸受板の各下端部に軸受孔５，５を穿設した蓋体６形成用のキャビティで、該キャビティを固定金型11と可動金型12との間に形成している。該キャビティは、外周面の上方一部、具体的には上記周壁の後壁3b上部の左右方向中間上部の後面、ないしは頂板後面の左右方向中間下部にゲート７を有する。上記蓋体を、頂板外周から周壁を垂下するだけの台とする場合は、軸受板4、4 を省略する。
【００１６】
又可動金型11は、上記頂板の下面形成面としての上面13と、周壁３の内周面形成面としての外周面14とを有し、かつ上記上面13へ、バキューム通路15を開口する凸状金型部分16を有する。そのバキューム通路15は、図示のように上記凸状金型部分の中央部上部をコア金型16a で形成し、該コア金型の下面および外周面へ穿設した溝で形成すればよい。
【００１７】
上記凸状金型部分16上面で、ゲート７と対向する外縁側からはフランジ21を起立させており、該フランジ内面へ当接させて、上記上面13へ図５が示す、模様18付きフィルム19を吸着させている。
【００１８】
図１が示す状態から、キャビティ１内へ溶融樹脂材料20を射出すると、ゲート７からキャビティ１内へ射出された溶融樹脂材料は、キャビティの周壁形成部分および頂板形成部分内へ入るが、ゲート７と対向する、上記フィルム19の端面部分は、該ゲートと対向するフランジ21部分の内面へ当接しているから、ゲート７から射出された溶融樹脂材料がフィルムの端面を押圧することはなく、フィルム19上面を下方へ押圧することとなり、よってフィルム19がフランジ21内面から外方へずれることはなく、このようにしてフィルム19を頂板２下面の所定位置へ正確にインサート成形することが可能となる。
【００１９】
尚上記フランジ21は、図３が示すように、ゲート７側と対向する、凸状金型部分上面の外縁、つまり図示例では蓋体周壁の前壁形成側の凸状金型上面外周部からだけ起立させてもよく、又図４が示すように凸状金型部分上面の全周から起立させてもよい。
【００２０】
図３の場合は、ゲート７から射出された溶融樹脂材料が、フィルム19を図左方へ押圧することとなるが、該フィルムは図左方に設けたフランジ21内面へ接しているため、左方へ位置ずれすることはない。
【００２１】
それ等いずれの場合も上記フィルム19は、フランジ内面へフィルム19外周面の一部ないし全周を当接させて凸状金型部分上面へ吸着させる。
【００２２】
凸状金型部分16上面への模様付きフィルム19の付設は、バキューム通路での吸着のほか、例えば接着剤使用等による付着も考えられる。
【００２３】
既述各実施形態のようにして、インサート成形が終わった後に、金型を開き、蓋状体６としての成形品を取出す。
【００２４】
第１実施形態により成形された蓋状体は、ゲート跡24側の頂板内面の外縁と、該外縁部から垂下する側壁内面上端とが形成する隅部分から下面開口の浅溝が起立することとなり、第２実施形態の場合は、ゲート跡24側と対向する頂板部分内面の外縁と該外縁から垂下する側壁内面とが形成する隅部分から下面開口の浅溝が起立することとなり、第３実施形態の場合は、図６、図７が示すように頂板２の下面外周と周壁３内面上端とが形成する隅部全周から既述フランジ抜け跡としての下面開口浅溝23が形成されることとなる。
【００２５】
尚既述模様付きフィルム19は、転写フィルムとしてもよく、この場合は蓋状体形成後に、転写後のフィルムだけ、頂板２下面から剥離し、模様18は頂板２下面へ転写させることとなる。
【００２６】
【発明の効果】
本発明は既述構成とするもので、請求項１から請求項４記載のようにすることで、模様付きフィルム19を蓋状体頂板２の下面の所定位置へ正確にインサート成形することが出来、その模様18は蓋状体頂板２の下面へ付設されることとなるため、頂板上面へ付設された模様と異り、頂板を透視してその模様を見ることとなるため深みのある模様となって見えることとなり、このように深みのある模様付きの透明ないし半透明蓋状体の成形を容易に行うことが出来る。又このように成形された蓋状体は頂板上面へ付設した模様の場合と異り、摩擦等により模様が薄れたり、剥離するおそれがない。
【００２７】
又請求項５から請求項８記載の金型を使用して成形することで、上記請求項１から請求項４記載の蓋状体の成形を容易に行うことが出来る。
【図面の簡単な説明】
【図１】 本発明成形方法を実施する金型の断面図である。
【図２】 図１要部の拡大断面図である。
【図３】 第２実施形態による金型断面図である。
【図４】 第３実施形態による金型断面図である。
【図５】 模様付きフィルムの拡大断面図である。
【図６】 図４の金型により成形された蓋状体の断面図である。
【図７】 図６蓋状体の底面図である。
【図８】 図６蓋状体の斜視図である。
【符号の説明】
１…キャビティ ７…ゲート
11…固定金型 12…可動金型
15…バキューム通路 16…凸状金型部分
16a…コア金型 18…模様
19…フィルム 21…フランジ
22…浅溝 23…ゲート跡[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a method for molding a synthetic resin patterned lid by insert molding, and a mold used in the molding method.
[0002]
[Prior art]
Patent Document 1 discloses a lid body in which a sheet material is insert-molded on an upper surface of a top plate, a molding method of the lid body, and a mold used for the lid body molding.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-283385
[Problems to be solved by the invention]
If a pattern is attached to the lower surface of the top plate of the transparent lid, the pattern will be visually observed through the transparent top plate. Therefore, the pattern may be deeper than the pattern attached to the upper surface of the top plate. In addition, since there is little contact with other objects on the bottom surface of the top plate, there is no possibility that the pattern will fade or peel off due to friction or the like, unlike the pattern attached to the top surface of the top plate.
[0005]
Accordingly, it is desired to provide a pattern on the lower surface of the top plate of the transparent lid, but since the peripheral wall of the lid is an obstacle, it is difficult to print on the lower surface of the top plate, and insert molding can be considered. If insert molding on the bottom surface of the top plate is performed by providing a gate at the center of the top surface forming mold surface of the top plate and injecting the resin material from the gate into the cavity, the top surface of the bottom surface forming mold portion of the top plate is formed. The attached film for insert molding is not pushed down by the resin material injection and does not move, etc., but this is convenient, but in this way, the gate mark remains at the center of the lid top plate as a product, and apparently It is not preferable. Therefore, the gate is provided on a part of the outer peripheral surface of the top plate or the upper end portion of the outer surface of the peripheral wall. However, in this way, the insert molding film attached to the upper surface of the top plate lower surface forming mold part is liable to cause lateral displacement.
[0006]
The present invention relates to a molding method aimed at eliminating the above-mentioned drawbacks and a mold used in the molding method. In the present invention, the term “transparent” includes translucent. Further, in the present invention, the lid-like body includes, in addition to the lid body that hangs the peripheral wall from the outer periphery of the top plate, a table that hangs the peripheral wall from the outer periphery of the top plate.
[0007]
[Means for Solving the Problems]
As a first means, a cavity 1 for forming a lid-like body 6 that hangs the peripheral wall 3 from the outer periphery of the top plate 2 is provided between the fixed mold 11 and the movable mold 12, and a part above the outer peripheral surface of the cavity. In the mold for forming a lid-like body provided with a gate 7 in
A convex mold portion 16 having an upper surface 13 for forming a lower surface of the top plate 2 and an outer peripheral surface 14 for forming an inner peripheral surface of the peripheral wall 3 is provided in the movable mold 12.
Opposed to the gate 7, the outer edge portion of the convex mold part 16 upper surface is positioned to the corner portion between the cavities 1 lower surface and the cavity 1 inner peripheral surface Rutotomoni is raised flange 21, the flange 21 the upper surface It is located on the extension of the upper surface of the gate 7 and is brought into contact with the inner surface of the flange to attach the patterned film 19 to the upper surface of the convex mold part.
The film is insert-molded to form a transparent lid.
[0008]
As a second means, a cavity 1 for forming a lid-like body 6 that hangs the peripheral wall 3 from the outer periphery of the top plate 2 is provided between the fixed mold 11 and the movable mold 12, and a part above the outer peripheral surface of the cavity. In the mold for forming a lid-like body provided with a gate 7 in
A convex mold portion 16 having an upper surface 13 for forming a lower surface of the top plate 2 and an outer peripheral surface 14 for forming an inner peripheral surface of the peripheral wall 3 is provided in the movable mold 12.
Positioned from the outer edge portion of the upper surface of the convex mold portion 16 facing the outer edge portion of the convex mold portion 16 closer to the gate 7 to the corner portion between the lower surface of the cavity 1 and the inner peripheral surface of the cavity 1. Rutotomoni is raised flange 22, the flange 22 the upper surface is positioned on the extension of the gate 7 the upper surface, depositing a patterned film 19 to the convex mold portion upper surface abutted to Mata該flange inner surface,
The film is insert-molded to form a transparent lid.
[0009]
As a third means, a cavity 1 for forming a lid-like body 6 that suspends the peripheral wall 3 from the outer periphery of the top plate 2 is provided between the fixed mold 11 and the movable mold 12, and a part above the outer peripheral surface of the cavity. In the mold for forming a lid-like body provided with a gate 7 in
A convex mold portion 16 having the upper surface 13 for forming the lower surface of the top plate 2 and the outer peripheral surface 14 for forming the inner peripheral surface of the peripheral wall 3 is provided on the movable mold 12.
A flange 17 is erected from the entire circumference of the upper surface 13 of the convex mold portion to a corner portion between the lower surface of the cavity 1 and the inner peripheral surface of the cavity 1, and the upper surface of the flange 17 is a plane including the upper surface of the gate 7. It is located inside, the outer peripheral surface is brought into contact with the inner surface of the flange, the patterned film 19 is attached to the upper surface of the convex mold portion, and the transparent lid 6 is formed by insert molding the film. To do.
[0010]
As a fourth means, a vacuum passage 15 having the first, second, or third means and opening to the upper surface 13 of the convex mold portion 16 is formed and placed on the upper surface of the convex mold. The patterned film 19 is adsorbed and insert-molded.
[0011]
As a fifth means, a cavity 1 for forming a lid-like body 6 that hangs the peripheral wall 3 from the outer periphery of the top plate 2 is provided between the fixed mold 11 and the movable mold 12, and a part above the outer peripheral surface of the cavity. In the mold for forming a lid-like body provided with a gate 7 in
A convex mold portion 16 having the upper surface 13 for forming the lower surface of the top plate 2 and the outer peripheral surface 14 for forming the inner peripheral surface of the peripheral wall 3 is provided on the movable mold 12.
Opposed to the gate 7, the outer edge portion of the convex mold part 16 the upper surface, is placed onto the top surface of the convex mold part 16 is insert, the gate-side end face abutment of the patterned film 19 characterized Rutotomoni, the <br/> that is positioned on the extension of the flange 21 the upper surface of the gate 7 the upper surface of the flange 21 is erected by position to the corners of the cavity 1 the lower surface and the cavity 1 inner peripheral surface And
[0012]
As a sixth means, a cavity 1 for forming a lid-like body 6 that hangs the peripheral wall 3 from the outer periphery of the top plate 2 is provided between the fixed mold 11 and the movable mold 12, and a part above the outer peripheral surface of the cavity. In the mold for forming a lid-like body provided with a gate 7 in
A convex mold portion 16 having the upper surface 13 for forming the lower surface of the top plate 2 and the outer peripheral surface 14 for forming the inner peripheral surface of the peripheral wall 3 is provided on the movable mold 12.
From the outer edge part of the upper surface of the convex mold part 16 facing the outer edge part of the convex mold part 16 closer to the gate 7 , it is placed on the upper surface of the convex mold part 16 and insert molded. the flange 22 of the end face abutting the side facing the gate side of the patterned film 19, is erected by position to the corners of the cavity 1 the lower surface and the cavity 1 inner peripheral surface Rutotomoni, the flange 22 the upper surface Is located on an extension of the upper surface of the gate 7 .
[0013]
As a seventh means, a cavity 1 for forming a lid-like body 6 that hangs the peripheral wall 3 from the outer periphery of the top plate 2 is provided between the fixed mold 11 and the movable mold 12, and a part above the outer peripheral surface of the cavity. In the mold for forming a lid-like body provided with a gate 7 in
A convex mold portion 16 having the upper surface 13 for forming the lower surface of the top plate 2 and the outer peripheral surface 14 for forming the inner peripheral surface of the peripheral wall 3 is provided on the movable mold 12.
The flange 17 for contact with the entire periphery of the patterned film 19 that is placed on the upper surface and insert-molded from the entire periphery of the upper surface 13 of the convex mold portion is connected to the lower surface of the cavity 1 and the inner periphery of the cavity 1. The upper surface of the flange 17 is positioned in a plane including the upper surface of the gate 7 and is raised while being positioned at a corner portion with respect to the surface .
[0014]
As an eighth means, the vacuum passage 15 having the fifth, sixth, or seventh means and opening to the upper surface 13 of the convex mold portion 16 is provided.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Referring to the drawings, 1 shows that the peripheral wall 3 is suspended from the outer periphery of the top plate 2 as shown in FIGS. 6 and 8, and the bearing plates 4 and 4 are suspended from the rear ends of the left and right side walls 3a. A cavity for forming a lid body 6 in which bearing holes 5 and 5 are formed in each lower end portion of the bearing plate, and the cavity is formed between the fixed mold 11 and the movable mold 12. The cavity has a gate 7 in an upper part of the outer peripheral surface, specifically, a rear surface in the middle in the left-right direction above the rear wall 3b of the peripheral wall or a middle lower portion in the left-right direction in the rear surface of the top plate. When the lid body is a platform that only hangs the peripheral wall from the outer periphery of the top plate, the bearing plates 4 and 4 are omitted.
[0016]
The movable mold 11 has an upper surface 13 as a lower surface forming surface of the top plate and an outer peripheral surface 14 as an inner peripheral surface forming surface of the peripheral wall 3, and is a convex that opens a vacuum passage 15 to the upper surface 13. A mold part 16 is provided. As shown in the figure, the vacuum passage 15 may be formed by forming a central upper part of the convex mold part with a core mold 16a and grooves formed in the lower surface and the outer peripheral surface of the core mold.
[0017]
On the upper surface of the convex mold portion 16, a flange 21 is erected from the outer edge facing the gate 7. The film 19 with a pattern 18 shown in FIG. Is adsorbed.
[0018]
When the molten resin material 20 is injected into the cavity 1 from the state shown in FIG. 1, the molten resin material injected into the cavity 1 from the gate 7 enters the peripheral wall forming portion and the top plate forming portion of the cavity. Since the end surface portion of the film 19 facing the surface is in contact with the inner surface of the flange 21 portion facing the gate, the molten resin material injected from the gate 7 does not press the end surface of the film. 19 The upper surface is pressed downward, so that the film 19 is not displaced outward from the inner surface of the flange 21, and thus the film 19 can be accurately insert-molded to a predetermined position on the lower surface of the top plate 2. .
[0019]
As shown in FIG. 3, the flange 21 is opposed to the outer edge of the upper surface of the convex mold portion facing the gate 7 side, that is, from the outer peripheral portion of the convex mold upper surface on the front wall forming side of the cover peripheral wall in the illustrated example. Or may be erected from the entire circumference of the upper surface of the convex mold portion as shown in FIG.
[0020]
In the case of FIG. 3, the molten resin material injected from the gate 7 presses the film 19 to the left in the figure, but since the film is in contact with the inner surface of the flange 21 provided on the left in the figure, There is no position shift.
[0021]
In any of these cases, the film 19 is adsorbed to the upper surface of the convex mold portion by bringing a part or the entire circumference of the outer peripheral surface of the film 19 into contact with the inner surface of the flange.
[0022]
Attaching the patterned film 19 to the upper surface of the convex mold portion 16 may be adhering by using, for example, an adhesive in addition to adsorption in a vacuum passage.
[0023]
As in the above-described embodiments, after the insert molding is completed, the mold is opened and the molded product as the lid-like body 6 is taken out.
[0024]
In the lid-shaped body formed according to the first embodiment, a shallow groove having a lower surface opening is erected from a corner portion formed by the outer edge of the inner surface of the top plate on the gate mark 24 side and the upper end of the inner surface of the side wall depending from the outer edge portion. In the case of the second embodiment, the shallow groove of the lower surface opening rises from the corner portion formed by the outer edge of the inner surface of the top plate portion facing the gate mark 24 side and the inner surface of the side wall depending from the outer edge. In the case of the form, as shown in FIGS. 6 and 7, the lower surface opening shallow groove 23 is formed as the above-described flange trace from the entire periphery of the corner formed by the outer periphery of the lower surface of the top plate 2 and the upper end of the inner surface of the peripheral wall 3. It becomes.
[0025]
The pattern-added film 19 may be a transfer film. In this case, after the lid-like body is formed, only the transferred film is peeled off from the lower surface of the top plate 2, and the pattern 18 is transferred to the lower surface of the top plate 2.
[0026]
【The invention's effect】
The present invention has the above-described configuration, and the patterned film 19 can be accurately insert-molded at a predetermined position on the lower surface of the lid-like body top plate 2 according to claims 1 to 4. Since the pattern 18 is attached to the lower surface of the lid-like body top plate 2, the pattern 18 is different from the pattern attached to the upper surface of the top plate. Thus, a transparent or translucent lid with a deep pattern can be easily formed. Further, unlike the case where the lid-like body formed in this way is attached to the top surface of the top plate, there is no possibility that the pattern is thinned or peeled off due to friction or the like.
[0027]
In addition, the lid-like body according to any one of claims 1 to 4 can be easily formed by using the mold according to any one of claims 5 to 8.
[Brief description of the drawings]
FIG. 1 is a sectional view of a mold for carrying out the molding method of the present invention.
FIG. 2 is an enlarged cross-sectional view of the main part of FIG.
FIG. 3 is a sectional view of a mold according to a second embodiment.
FIG. 4 is a cross-sectional view of a mold according to a third embodiment.
FIG. 5 is an enlarged cross-sectional view of a patterned film.
6 is a cross-sectional view of a lid-like body formed by the mold shown in FIG. 4. FIG.
7 is a bottom view of the lid-like body. FIG.
FIG. 8 is a perspective view of the lid-like body.
[Explanation of symbols]
1 ... Cavity 7 ... Gate
11 ... fixed mold 12 ... movable mold
15 ... Vacuum passage 16 ... Convex mold part
16a ... Core mold 18 ... Pattern
19 ... Film 21 ... Flange
22 ... Asami groove 23 ... Gate trace

Claims (8)

頂板２外周から周壁３を垂下する蓋状体６形成用のキャビティ１を固定金型１１と可動金型１２との間に有し、かつ該キャビティ外周面の上方一部にゲート７を設けた、蓋状体形成用金型において、
上記頂板２の下面形成用上面１３と、周壁３の内周面形成用外周面１４とを有する凸状金型部分１６を可動金型１２に設け、
上記ゲート７と対向する、凸状金型部分１６上面の外縁部分から上記キャビティ１下面と上記キャビティ１内周面との隅部分へ位置させてフランジ２１を起立させると共に、該フランジ２１上面を上記ゲート７上面の延長上に位置させ、又該フランジ内面へ当接させて凸状金型部分上面へ模様付きフィルム１９を付着させ、
該フィルムをインサート成形して透明蓋状体を形成することを特徴とする合成樹脂製の模様付き透明蓋状体の成形方法。A cavity 1 for forming a lid-like body 6 that hangs down the peripheral wall 3 from the outer periphery of the top plate 2 is provided between the fixed mold 11 and the movable mold 12, and a gate 7 is provided at a part above the outer peripheral surface of the cavity. In the lid forming mold,
A convex mold portion 16 having an upper surface 13 for forming a lower surface of the top plate 2 and an outer peripheral surface 14 for forming an inner peripheral surface of the peripheral wall 3 is provided in the movable mold 12.
Opposed to the gate 7, the outer edge portion of the convex mold part 16 upper surface is positioned to the corner portion between the cavities 1 lower surface and the cavity 1 inner peripheral surface Rutotomoni is raised flange 21, the flange 21 the upper surface It is located on the extension of the upper surface of the gate 7 and is brought into contact with the inner surface of the flange to attach the patterned film 19 to the upper surface of the convex mold part.
A method for forming a transparent lid with a pattern made of a synthetic resin, wherein the film is insert-molded to form a transparent lid. 頂板２外周から周壁３を垂下する蓋状体６形成用のキャビティ１を固定金型１１と可動金型１２との間に有し、かつ該キャビティ外周面の上方一部にゲート７を設けた、蓋状体形成用金型において、
上記頂板２の下面形成用上面１３と、周壁３の内周面形成用外周面１４とを有する凸状金型部分１６を可動金型１２に設け、
上記ゲート７に近い方の凸状金型部分１６の外縁部分と対向する、凸状金型部分１６上面の外縁部分から上記キャビティ１下面と上記キャビティ１内周面との隅部分へ位置させてフランジ２２を起立させると共に、該フランジ２２上面を上記ゲート７上面の延長上に位置させ、又該フランジ内面へ当接させて凸状金型部分上面へ模様付きフィルム１９を付着させ、
該フィルムをインサート成形して透明蓋状体を形成することを特徴とする合成樹脂製の模様付き透明蓋状体の成形方法。A cavity 1 for forming a lid-like body 6 that hangs down the peripheral wall 3 from the outer periphery of the top plate 2 is provided between the fixed mold 11 and the movable mold 12, and a gate 7 is provided at a part above the outer peripheral surface of the cavity. In the lid forming mold,
A convex mold portion 16 having an upper surface 13 for forming a lower surface of the top plate 2 and an outer peripheral surface 14 for forming an inner peripheral surface of the peripheral wall 3 is provided in the movable mold 12.
Positioned from the outer edge portion of the upper surface of the convex mold portion 16 facing the outer edge portion of the convex mold portion 16 closer to the gate 7 to the corner portion between the lower surface of the cavity 1 and the inner peripheral surface of the cavity 1. Rutotomoni is raised flange 22, the flange 22 the upper surface is positioned on the extension of the gate 7 the upper surface, depositing a patterned film 19 to the convex mold portion upper surface abutted to Mata該flange inner surface,
A method for forming a transparent lid with a pattern made of a synthetic resin, wherein the film is insert-molded to form a transparent lid. 頂板２外周から周壁３を垂下する蓋状体６形成用のキャビティ１を固定金型１１と可動金型１２との間に有し、かつ該キャビティ外周面の上方一部にゲート７を設けた、蓋状体形成用金型において、
上記頂板２の下面形成用上面１３と、周壁３の内周面形成用外周面１４とを、有する凸状金型部分１６を可動金型１２に設け、
該凸状金型部分の上面１３全周から上記キャビティ１下面と上記キャビティ１内周面との隅部分へ位置させてフランジ１７を起立させると共に、該フランジ１７上面を上記ゲート７上面を含む平面内へ位置させ、該フランジ内面へ外周面を当接させて凸状金型部分上面へ模様付きフィルム１９を付着させ、該フィルムをインサート成形して透明蓋状体６を形成する
ことを特徴とする、合成樹脂製の模様付き透明蓋状体の成形方法。A cavity 1 for forming a lid-like body 6 that hangs down the peripheral wall 3 from the outer periphery of the top plate 2 is provided between the fixed mold 11 and the movable mold 12, and a gate 7 is provided at a part above the outer peripheral surface of the cavity. In the lid forming mold,
A convex mold portion 16 having the upper surface 13 for forming the lower surface of the top plate 2 and the outer peripheral surface 14 for forming the inner peripheral surface of the peripheral wall 3 is provided on the movable mold 12.
A flange 17 is erected from the entire circumference of the upper surface 13 of the convex mold portion to a corner portion between the lower surface of the cavity 1 and the inner peripheral surface of the cavity 1, and the upper surface of the flange 17 is a plane including the upper surface of the gate 7. It is located inside, the outer peripheral surface is brought into contact with the inner surface of the flange, the patterned film 19 is attached to the upper surface of the convex mold portion, and the transparent lid 6 is formed by insert molding the film. A method of forming a patterned transparent lid-like body made of synthetic resin. 上記凸状金型部分１６上面１３へ開口するバキューム通路１５を穿設し、該凸状金型上面へ載置させた模様付きフィルム１９を吸着させてインサート成形する
ことを特徴とする、請求項１、２又は３記載の合成樹脂製の模様付き透明蓋状体の成形方法。A vacuum passage 15 opened to the upper surface 13 of the convex mold portion 16 is formed, and a film 19 with a pattern placed on the upper surface of the convex mold is adsorbed to perform insert molding. A method for forming a patterned transparent lid-like body made of a synthetic resin according to 1, 2 or 3. 頂板２外周から周壁３を垂下する蓋状体６形成用のキャビティ１を固定金型１１と可動金型１２との間に有し、かつ該キャビティ外周面の上方一部にゲート７を設けた、蓋状体形成用金型において、
上記頂板２の下面形成用上面１３と、周壁３の内周面形成用外周面１４とを、有する凸状金型部分１６を可動金型１２に設け、
上記ゲート７と対向する、凸状金型部分１６上面の外縁部分から、上記凸状金型部分１６の上面へ載置されてインサートされる、模様付きフィルム１９のゲート側端面当接用のフランジ２１を上記キャビティ１下面と上記キャビティ１内周面との隅部分へ位置させて起立させると共に、該フランジ２１上面を上記ゲート７上面の延長上に位置させた
ことを特徴とする合成樹脂製模様付き透明蓋状体成形用金型。A cavity 1 for forming a lid-like body 6 that hangs down the peripheral wall 3 from the outer periphery of the top plate 2 is provided between the fixed mold 11 and the movable mold 12, and a gate 7 is provided at a part above the outer peripheral surface of the cavity. In the lid forming mold,
A convex mold portion 16 having the upper surface 13 for forming the lower surface of the top plate 2 and the outer peripheral surface 14 for forming the inner peripheral surface of the peripheral wall 3 is provided on the movable mold 12.
Opposed to the gate 7, the outer edge portion of the convex mold part 16 the upper surface, is placed onto the top surface of the convex mold part 16 is insert, the gate-side end face abutment of the patterned film 19 characterized Rutotomoni, the <br/> that is positioned on the extension of the flange 21 the upper surface of the gate 7 the upper surface of the flange 21 is erected by position to the corners of the cavity 1 the lower surface and the cavity 1 inner peripheral surface A mold for molding a transparent lid with a synthetic resin pattern. 頂板２外周から周壁３を垂下する蓋状体６形成用のキャビティ１を固定金型１１と可動金型１２との間に有し、かつ該キャビティ外周面の上方一部にゲート７を設けた、蓋状体形成用金型において、
上記頂板２の下面形成用上面１３と、周壁３の内周面形成用外周面１４とを、有する凸状金型部分１６を可動金型１２に設け、
上記ゲート７に近い方の凸状金型部分１６の外縁部分と対向する、凸状金型部分１６上面の外縁部分から、上記凸状金型部分１６の上面へ載置されてインサート成形される、模様付きフィルム１９のゲート側と対向する側の端面当接用のフランジ２２を、上記キャビティ１下面と上記キャビティ１内周面との隅部分へ位置させて起立させると共に、該フランジ２２上面を上記ゲート７上面の延長上に位置させた
ことを特徴とする合成樹脂製模様付き透明蓋状体成形用金型。A cavity 1 for forming a lid-like body 6 that hangs down the peripheral wall 3 from the outer periphery of the top plate 2 is provided between the fixed mold 11 and the movable mold 12, and a gate 7 is provided at a part above the outer peripheral surface of the cavity. In the lid forming mold,
A convex mold portion 16 having the upper surface 13 for forming the lower surface of the top plate 2 and the outer peripheral surface 14 for forming the inner peripheral surface of the peripheral wall 3 is provided on the movable mold 12.
From the outer edge part of the upper surface of the convex mold part 16 facing the outer edge part of the convex mold part 16 closer to the gate 7 , it is placed on the upper surface of the convex mold part 16 and insert molded. the flange 22 of the end face abutting the side facing the gate side of the patterned film 19, is erected by position to the corners of the cavity 1 the lower surface and the cavity 1 inner peripheral surface Rutotomoni, the flange 22 the upper surface A mold for forming a transparent lid-like body with a synthetic resin pattern, wherein the mold is positioned on an extension of the upper surface of the gate 7 . 頂板２外周から周壁３を垂下する蓋状体６形成用のキャビティ１を固定金型１１と可動金型１２との間に有し、かつ該キャビティ外周面の上方一部にゲート７を設けた、蓋状体形成用金型において、
上記頂板２の下面形成用上面１３と、周壁３の内周面形成用外周面１４とを、有する凸状金型部分１６を可動金型１２に設け、
該凸状金型部分の上面１３全周から、該上面へ載置されてインサート成形される、模様付きフィルム１９の全周当接用のフランジ１７を、上記キャビティ１下面と上記キャビティ１内周面との隅部分へ位置させて起立させると共に、該フランジ１７上面を上記ゲート７上面を含む平面内へ位置させた
ことを特徴とする合成樹脂製模様付き透明蓋状体成形用金型。A cavity 1 for forming a lid-like body 6 that hangs down the peripheral wall 3 from the outer periphery of the top plate 2 is provided between the fixed mold 11 and the movable mold 12, and a gate 7 is provided at a part above the outer peripheral surface of the cavity. In the lid forming mold,
A convex mold portion 16 having the upper surface 13 for forming the lower surface of the top plate 2 and the outer peripheral surface 14 for forming the inner peripheral surface of the peripheral wall 3 is provided on the movable mold 12.
The flange 17 for contact with the entire periphery of the patterned film 19 that is placed on the upper surface and insert-molded from the entire periphery of the upper surface 13 of the convex mold portion is connected to the lower surface of the cavity 1 and the inner periphery of the cavity 1. A synthetic resin-patterned transparent lid-like body molding, characterized in that the flange 17 is positioned upright at a corner with respect to the surface, and the upper surface of the flange 17 is positioned in a plane including the upper surface of the gate 7 . Mold. 上記凸状金型部分１６上面１３へ開口するバキューム通路１５を有する
ことを特徴とする、請求項５、６、又は７記載の合成樹脂製模様付き透明蓋状体成形用金型。8. A transparent lid-shaped molding die with a synthetic resin pattern according to claim 5, 6 or 7, characterized by having a vacuum passage 15 opening to the upper surface 13 of the convex mold portion 16.
JP2003097452A 2003-03-31 2003-03-31 Method for molding transparent lid with synthetic resin pattern and mold used in the molding method Expired - Lifetime JP4502172B2 (en)

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