JP2003094439A - Mold for molding light guide plate - Google Patents

Mold for molding light guide plate

Info

Publication number
JP2003094439A
JP2003094439A JP2001287476A JP2001287476A JP2003094439A JP 2003094439 A JP2003094439 A JP 2003094439A JP 2001287476 A JP2001287476 A JP 2001287476A JP 2001287476 A JP2001287476 A JP 2001287476A JP 2003094439 A JP2003094439 A JP 2003094439A
Authority
JP
Japan
Prior art keywords
stamper
mold
guide plate
light guide
molding
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.)
Granted
Application number
JP2001287476A
Other languages
Japanese (ja)
Other versions
JP3524897B2 (en
Inventor
Minoru Sasamura
稔 笹村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kata Systems Co
Original Assignee
Kata Systems Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kata Systems Co filed Critical Kata Systems Co
Priority to JP2001287476A priority Critical patent/JP3524897B2/en
Publication of JP2003094439A publication Critical patent/JP2003094439A/en
Application granted granted Critical
Publication of JP3524897B2 publication Critical patent/JP3524897B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a mold for molding a light guide plate easy to replace a stamper, reducing the effect of stretching and contraction due to heat exerted on the molded light guide plate and not damaging or contaminating a mold member. SOLUTION: In the mold 50 for molding the light guide plate 100 to which a pattern is transferred by the stamper 20, the stamper 20 attached to one mold member 10 by a positioning means is pressed by a press means 42 having a stroke wherein the top dead point provided to other opposed mold member 40 is positioned in front of a PL line.

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、導光板成形用の金
型に関し、詳しくは、スタンパーの交換が容易な導光板
成形用の金型に関する。 【0002】 【従来の技術】光源を液晶表示装置の側面に配置するエ
ッジライト方式のバックライトユニットでは、側方から
入射する光源の光を液晶パネル全面に均一に照射させる
等の目的で導光板を備えている。この導光板の出光面側
は、輝度分布を改善し均一な拡散光を得るため等にパタ
ーンを有し、このパターンは対応する逆のパターンがエ
ッチング法等により刻設されたスタンパーを備える金型
を用いて転写により形成される。従来より提供される金
型において、スタンパーは、例えば、金型部材に外周枠
を用いてボルト締めにより取り付けられたり、金型部材
に両面テープを用いて取り付けられていた。 【0003】ところで、スタンパーのパターンの初期調
整段階等においてパターンに若干の変更を加えなければ
ならないことがあり、その際は金型部材からのスタンパ
ーの着脱を繰り返さなければならなかった。また、導光
板に形成されるパターンは単一のパターンのみではな
く、異種のパターンが形成されることもあり、その際は
スタンパーの交換が必要であった。さらに、スタンパー
自体の厚みは数mmに過ぎず、刻設されるパターンは微
細加工されるものであるため、成形を重ねていくにつれ
成形圧力などによりパターンの摩耗や変形を招くことが
あり、このような場合、特に成形途中であるためスタン
パーの迅速な交換が必要であった。 【0004】 【発明が解決しようとする課題】しかし、上記従来の金
型では、ボルトによるスタンパーの着脱は煩雑で成形作
業効率が悪くなるばかりか、レンチなどの工具で金型部
材の鏡面部に傷を付けることやスタンパーの四隅が強固
に固定されるため熱による伸縮の影響を受け易く、スタ
ンパーに反りが生じ、ひいては導光板にも反りを生じる
ことがあった。また、両面テープによるスタンパーの取
り付けは、スタンパーの固定が十分でないことや金型部
材の鏡面部を汚す虞があった。 【0005】本発明は、上記事情に基づきなされたもの
で、スタンパーの交換が容易で、成形される導光板に及
ぼす熱による伸縮の影響も少なく、金型部材を傷めたり
汚すことのない導光板成形用の金型を提供することを課
題とする。 【0006】 【課題を解決するための手段】上記課題を解決するため
の本発明は、スタンパーによりパターンが転写される導
光板を成形する導光板成形用の金型において、一方の金
型部材に位置決め手段により取着されたスタンパーを、
対向する他方の金型部材に設けられた上死点がPL線よ
り前方に突出するストロークを有する押圧手段により押
圧することを特徴とする導光板成形用の金型を要旨とす
る。 【0007】上記構成の発明によれば、上死点がPL線
より前方に突出するストロークを有する押圧手段を備え
るので、型閉じ状態において上死点方向と反対方向にス
トロークして蓄えられた反発力によりスタンパーを押圧
しながら金型部材に固定でき、特に射出圧縮成形におい
て射出圧力等によりPL面が僅かに開くことがあって
も、PL線より前方に突出する押圧手段によりスタンパ
ーを押圧し金型部材にスタンパーを確実に固定すること
ができる。また、型開き開始直後においては、ストロー
クが上死点に達しPL線より前方に突出するため、成形
された導光板のスタンパーからの離型性を高めることが
できる。なお、ここでストロークを有する押圧手段と
は、進退自在に押圧を繰り返すことができる手段をい
う。 【0008】 【発明の実施の形態】以下、本発明の実施の形態を図面
を参照しながら説明する。図1は、固定型に位置決め固
定されたスタンパーを示す説明図で、図2はランナーや
ゲートなどを省略して金型の型開き開始直後の状態を模
式的に示す説明図で、図3は同様にランナーやゲートな
どを省略して金型の型開き状態を模式的に示す説明図
で、図4は同様にランナーやゲートなどを省略して金型
の型閉じ状態を模式的に示す説明図で、図4はスタンパ
ーが位置決めされた状態を概略的に示す側面図で、図5
はスタンパーが位置決めされた状態を概略的に示す正面
図である。 【0009】本実施形態の金型50は、一方の金型部材
である固定型10に形成された凹所11にスタンパー2
0が嵌め込まれている。スタンパー20は、上部中央が
図5と図6に示す位置決め手段に相当する位置決めブロ
ック30により位置決め固定され、固定型10に取着さ
れている。位置決めブロック30には、固定用凹陥部3
1とその中央に位置決め用突起32が形成されている。
また、スタンパー20にはその上部中央に位置決め用切
欠き22が形成されている。スタンパー20は、位置決
め用突起32に位置決め用切欠き22を嵌入することに
より位置決め固定される。位置決めブロック30は、図
5に矢印で示す左右方向に図示しないエアーシリンダー
により駆動され、右方向への駆動によりスタンパー20
を固定型10に確実に取着することができ、左方向への
駆動によりスタンパー20の取り外しが容易となる。ま
た、スタンパー20と固定用凹嵌部31の内壁との間に
は、所定のクリアランスcが形成されているので、位置
決めブロック30を右方向に駆動させれば、スタンパー
20の後面部と固定用凹陥部31の右側内壁との間にク
リアランスcができ、スタンパー20は固定用凹陥部3
1の左側内壁により確実に固定型10に取着され、位置
決めブロック30が左方向に駆動されれば、スタンパー
20の前面部と固定用凹陥部31の左側内壁との間にク
リアランスcができ(図示省略)、スタンパー20の取
り外しが容易となる。なお、スプルー33から射出され
た溶融樹脂を円滑に流入させるために、位置決めブロッ
ク30の上部にテーパーが形成されている。また、位置
決めブロック30の駆動は、油圧やギヤー機構などによ
って行ってもよい。さらに、図1に示すようにスタンパ
ー20の中心部には、エッチング法によりパターンが刻
設されたパターン形成部21が設けられている。 【0010】他方の金型部材である可動型40には、製
品部41が形成されている。可動型40の所定位置に
は、ストロークを有する押圧手段に相当する円筒状をな
すスプリング付可動ピン42が図1に示すようにスタン
パー20のパターン形成部21周りの上下と左右を押圧
する位置に各々2個ずつ設けられている。このスプリン
グ付可動ピン42は、図3に示すように金型の型開き時
において上死点が可動型40のPL線よりdだけ前方に
突出するように構成されている。 【0011】次いで、上記のように構成される本実施形
態の金型50を用いた導光板の射出圧縮成形について説
明する。図4に示すように、金型50が型閉じ状態にな
るとスプリング付可動ピン42の先端が可動型40のP
L線まで後退し、スプリング43に蓄えられた付勢力に
よりスプリング付可動ピン42はスタンパー20の所定
位置を押圧でき、特に射出圧力等により僅かにPL面が
開くようなことがあっても、PL線から突出するスプリ
ング付可動ピン42によりスタンパー20をその上下左
右で固定できる。型閉じ後、溶融樹脂が製品部41に射
出され、その後冷却、固化を経てスタンパー20に刻設
されたパターンが転写された導光板100が成形され
る。溶融樹脂の射出に際し、ボルト締めによりスタンパ
ーが金型部材に強固に固定される従来の金型が溶融樹脂
の熱による伸縮の影響を受け、導光板に反りが生じる虞
があったのに比べ、スプリング付可動ピン42が設けら
た本実施形態の金型50によれば、スプリング付可動ピ
ン42の進退により熱による伸縮に柔軟に対応できるの
で、成形される導光板100に反りを生じにくい。ま
た、図3に示す型開き状態において、溶融樹脂の熱によ
り加えられた変形がスタンパー20に残っていたとして
も、前記ボルト締めで強固に固定されるスタンパーでは
四隅を規制され容易に原形に復帰できないのに対し、本
実施形態の金型50におけるスタンパー20は、位置決
めブロック30以外に規制がないので原形への復帰が容
易で、溶融樹脂の熱による伸縮(変形)の影響を回避で
きる。 【0012】成形後、金型50は型開きされ、導光板1
00が取り出されるが、成形された導光板100には無
数のパターンが形成されているので、スタンパー20と
の接触面積が大きくなり、導光板100のスタンパー2
0からの離型性が悪くなる傾向がある。そのため、固定
型10に位置決め固定されたスタンパー20が可動型4
0の製品部41で成形された導光板100に接着した状
態で金型50が型開きされれば、スタンパー20には大
きな応力が及び変形する虞があった。しかし、本実施形
態の金型50によれば、上死点が可動型40のPL線よ
り前方に位置するように構成されたスプリング付可動ピ
ン42が設けられているため、型開きに伴いスプリング
43の付勢力によりスタンパー20の所定位置を固定型
10方向に押し出すように作用し、導光板100のスタ
ンパー20からの離型性を高め、スタンパー20の変
形、ひいては導光板の変形を回避することができる。 【0013】続いて、本実施形態の金型50におけるス
タンパー20の交換について説明する。この実施形態の
金型50は、スタンパー20がボルト締めや両面テープ
などで金型部材に固定されるのではなく、単に位置決め
ブロック30のみで位置決め固定され、スタンパー20
が取着された固定型10と対向する可動型40に設けら
れたスプリング付可動ピン42によって更にスタンパー
20を固定する構成となっているので、スタンパー20
の着脱、すなわちスタンパー20の交換が容易である。
具体的には、叙述のように位置決めブロック30をエア
ーシリンダーにより駆動でき、位置決めブロック30に
スタンパー20を着脱するだけで容易にスタンパー20
の交換を行うことができる。 【0014】本発明は、以下に例示するように形態を変
更して具体化することができる。 (1)可動ピンの駆動は、スプリングの付勢力に限定さ
れるものではなく、エアーや油圧などにより行ってもよ
い。 (2)押圧手段は、可動ピンではなく可動ブロックやプ
ランジャーなどによって行ってもよく、例えばスタンパ
ーの上下左右を各々単一な可動ブロックにて上記の各種
の方法により駆動させ押圧する構成としてもよい。この
構成によれば、押圧手段を備えた金型をより簡単に製造
できる。 (3)スタンパーは、金型部材に凹所を設けないで金型
部材の平坦面に固定する構成としてもよい。 (4)スタンパー及び/又は製品部は入れ子により構成
してもよい。 【0015】 【発明の効果】上記のように構成される本発明は、以下
の効果を奏する。本発明の導光板成形用の金型によれ
ば、スタンパーの交換が容易であるため、スタンパーの
パターンの初期調整などにおける作業効率を高めること
ができる。また、成形途中であってもスタンパーの交換
が迅速に行えるので、成形作業の効率を高めることがで
きる。 【0016】また、本発明の導光板成形用の金型によれ
ば、金型部材の鏡面を傷めたり汚したりすることがない
ので、金型部材の保全に寄与できる。 【0017】更に、本発明の導光板成形用の金型によれ
ば、溶融樹脂の熱による伸縮の影響を受けにくいので、
成形された導光板に反りなどを生じる虞がなく、効率的
に導光板を成形できる。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold for molding a light guide plate, and more particularly to a mold for molding a light guide plate in which a stamper can be easily replaced. 2. Description of the Related Art In an edge light type backlight unit in which a light source is arranged on a side surface of a liquid crystal display device, a light guide plate is provided for the purpose of, for example, uniformly irradiating light from a light source incident from the side to the entire surface of a liquid crystal panel. It has. The light exit surface side of the light guide plate has a pattern for improving the luminance distribution and obtaining uniform diffused light, and the pattern has a stamper in which a corresponding reverse pattern is engraved by etching or the like. And formed by transfer. In a conventionally provided mold, the stamper is attached to the mold member by bolting using an outer peripheral frame, or attached to the mold member using a double-sided tape, for example. In some cases, it is necessary to make a slight change to the pattern in the initial adjustment stage of the pattern of the stamper or the like. In this case, the mounting and dismounting of the stamper from the mold member must be repeated. Further, not only a single pattern but also a different pattern may be formed on the light guide plate. In this case, the stamper needs to be replaced. Furthermore, the thickness of the stamper itself is only a few mm, and the pattern to be engraved is finely processed.Therefore, as the molding is repeated, the pattern may be worn or deformed due to molding pressure and the like. In such a case, the stamper needs to be quickly replaced, especially during molding. [0004] However, in the above-described conventional mold, the mounting and dismounting of the stamper by bolts is complicated and the molding work efficiency is deteriorated. In addition, a tool such as a wrench is used to apply a tool such as a wrench to the mirror surface of the mold member. Due to scratching and firmly fixing the four corners of the stamper, the stamper is easily affected by expansion and contraction due to heat, and the stamper may be warped, and the light guide plate may also be warped. In addition, the mounting of the stamper with the double-sided tape has a risk that the fixation of the stamper is not sufficient and the mirror surface of the mold member is stained. The present invention has been made based on the above circumstances, and is easy to replace a stamper, has little influence of heat expansion and contraction on a light guide plate to be formed, and does not damage or stain a mold member. It is an object to provide a mold for molding. According to the present invention, there is provided a light guide plate forming mold for forming a light guide plate on which a pattern is transferred by a stamper. The stamper attached by the positioning means,
A gist for molding a light guide plate is characterized in that the top dead center provided on the other opposing mold member is pressed by pressing means having a stroke protruding forward from the PL line. According to the invention having the above structure, since the pressing means having the stroke in which the top dead center protrudes forward from the PL line is provided, the rebound stored by stroke in the direction opposite to the top dead center direction in the mold closed state. The stamper can be fixed to the mold member while pressing the stamper by force. In particular, even if the PL surface is slightly opened due to injection pressure or the like in the injection compression molding, the stamper is pressed by the pressing means protruding forward from the PL line. The stamper can be securely fixed to the mold member. Further, immediately after the mold opening is started, the stroke reaches the top dead center and projects forward from the PL line, so that the releasability of the molded light guide plate from the stamper can be improved. Here, the pressing means having a stroke refers to a means capable of repeating pressing so as to advance and retreat freely. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing a stamper positioned and fixed to a fixed mold. FIG. 2 is an explanatory view schematically showing a state immediately after the start of mold opening with a runner and a gate omitted. Similarly, FIG. 4 is an explanatory view schematically showing a mold open state by omitting runners and gates, and FIG. 4 is a schematic view showing a mold closed state by similarly omitting runners and gates. FIG. 4 is a side view schematically showing a state where the stamper is positioned, and FIG.
FIG. 4 is a front view schematically showing a state where the stamper is positioned. The mold 50 of the present embodiment has a stamper 2 in a recess 11 formed in a stationary mold 10 which is one mold member.
0 is inserted. The upper center of the stamper 20 is positioned and fixed by a positioning block 30 corresponding to the positioning means shown in FIGS. 5 and 6, and is attached to the fixed mold 10. The positioning block 30 includes a fixing recess 3.
1 and a positioning projection 32 are formed at the center thereof.
In addition, a positioning notch 22 is formed in the center of the upper part of the stamper 20. The stamper 20 is positioned and fixed by fitting the positioning notch 22 into the positioning projection 32. The positioning block 30 is driven by an air cylinder (not shown) in the left and right directions indicated by arrows in FIG.
Can be securely attached to the fixed mold 10, and the stamper 20 can be easily removed by being driven in the left direction. Further, since a predetermined clearance c is formed between the stamper 20 and the inner wall of the fixing concave fitting portion 31, if the positioning block 30 is driven rightward, the rear surface of the stamper 20 and the fixing surface can be fixed. A clearance c is formed between the concave portion 31 and the right inner wall, and the stamper 20 is fixed to the fixing concave portion 3.
When the positioning block 30 is driven to the left by the left inner wall of the stamper 1 securely attached to the fixed mold 10, a clearance c is formed between the front surface of the stamper 20 and the left inner wall of the fixing recess 31 ( (Not shown), and the removal of the stamper 20 becomes easy. In addition, a taper is formed on the upper portion of the positioning block 30 so that the molten resin injected from the sprue 33 flows in smoothly. The positioning block 30 may be driven by a hydraulic pressure, a gear mechanism, or the like. Further, as shown in FIG. 1, a pattern forming portion 21 in which a pattern is engraved by an etching method is provided at the center of the stamper 20. A product portion 41 is formed on a movable mold 40 which is the other mold member. At a predetermined position of the movable mold 40, a cylindrical movable pin 42 having a shape of a cylinder corresponding to a pressing means having a stroke is pressed to the upper and lower sides and right and left around the pattern forming portion 21 of the stamper 20 as shown in FIG. Two each are provided. As shown in FIG. 3, the movable pin with spring 42 is configured such that its top dead center protrudes forward by d from the PL line of the movable mold 40 when the mold is opened. Next, injection compression molding of a light guide plate using the mold 50 of the present embodiment configured as described above will be described. As shown in FIG. 4, when the mold 50 is closed, the tip of the movable pin 42 with the spring
The movable pin with spring 42 can retreat to the L line and press the predetermined position of the stamper 20 by the biasing force stored in the spring 43. In particular, even if the PL surface slightly opens due to the injection pressure or the like, the PL The stamper 20 can be fixed up, down, left and right by the movable pin with spring 42 projecting from the wire. After the mold is closed, the molten resin is injected into the product part 41, then cooled and solidified to form the light guide plate 100 on which the pattern engraved on the stamper 20 is transferred. Injecting the molten resin, the conventional mold in which the stamper is firmly fixed to the mold member by bolting is affected by the expansion and contraction due to the heat of the molten resin, and the light guide plate may be warped. According to the mold 50 of the present embodiment in which the movable pins with springs 42 are provided, since the movable pins with springs 42 can flexibly cope with expansion and contraction due to heat, the formed light guide plate 100 is less likely to warp. Also, in the mold open state shown in FIG. 3, even if the deformation applied by the heat of the molten resin remains on the stamper 20, the four corners are regulated by the stamper which is firmly fixed by the bolts, and the stamper is easily returned to the original shape. On the other hand, the stamper 20 in the mold 50 of the present embodiment has no restrictions other than the positioning block 30, so it can be easily returned to the original shape, and the influence of expansion and contraction (deformation) due to heat of the molten resin can be avoided. After molding, the mold 50 is opened, and the light guide plate 1 is opened.
00 is taken out, but since an infinite number of patterns are formed on the formed light guide plate 100, the contact area with the stamper 20 increases, and the stamper 2 of the light guide plate 100
The releasability from 0 tends to be poor. Therefore, the stamper 20 positioned and fixed to the fixed mold 10 is
If the mold 50 is opened while being bonded to the light guide plate 100 formed by the product part 41 of the No. 0, the stamper 20 may be subjected to a large stress and may be deformed. However, according to the mold 50 of the present embodiment, since the movable pin 42 with a spring configured such that the top dead center is located ahead of the PL line of the movable mold 40 is provided, The biasing force of 43 acts to push a predetermined position of the stamper 20 in the direction of the fixed mold 10, thereby increasing the releasability of the light guide plate 100 from the stamper 20, and avoiding deformation of the stamper 20 and thus deformation of the light guide plate. Can be. Next, replacement of the stamper 20 in the mold 50 of the present embodiment will be described. In the mold 50 of this embodiment, the stamper 20 is not fixed to the mold member by bolting or double-sided tape, but is simply fixed by the positioning block 30 alone.
Since the stamper 20 is further fixed by a movable pin with a spring 42 provided on a movable mold 40 facing the fixed mold 10 to which the stamper 20 is attached.
, That is, the replacement of the stamper 20 is easy.
Specifically, as described above, the positioning block 30 can be driven by an air cylinder, and the stamper 20 can be easily mounted and removed simply by attaching and detaching the stamper 20 to and from the positioning block 30.
Can be exchanged. The present invention can be embodied by changing the form as exemplified below. (1) The driving of the movable pin is not limited to the urging force of the spring, but may be performed by air or hydraulic pressure. (2) The pressing means may be performed by a movable block or a plunger instead of the movable pin. For example, the upper and lower and left and right sides of the stamper may be driven and pressed by a single movable block by the various methods described above. Good. According to this configuration, the mold having the pressing means can be manufactured more easily. (3) The stamper may be configured to be fixed to the flat surface of the mold member without providing a recess in the mold member. (4) The stamper and / or the product part may be formed by nesting. The present invention configured as described above has the following effects. According to the mold for molding a light guide plate of the present invention, since the stamper can be easily replaced, the work efficiency in the initial adjustment of the pattern of the stamper can be improved. Further, since the stamper can be quickly replaced even during the molding, the efficiency of the molding operation can be improved. Further, according to the mold for molding a light guide plate of the present invention, the mirror surface of the mold member is not damaged or soiled, which contributes to the maintenance of the mold member. Further, according to the mold for molding a light guide plate of the present invention, the mold is hardly affected by expansion and contraction due to heat of the molten resin.
There is no possibility that the formed light guide plate will be warped, and the light guide plate can be formed efficiently.

【図面の簡単な説明】 【図1】固定型に位置決め固定されたスタンパーを示す
説明図である。 【図2】金型の型開き開始直後の状態を模式的に示す説
明図である。 【図3】金型の型開き状態を模式的に示す説明図であ
る。 【図4】金型の型閉じ状態を模式的に示す説明図であ
る。 【図5】スタンパーが位置決めされた状態を示す概略的
側面図である。 【図6】スタンパーが位置決めされた状態を示す概略的
正面図である。 【符号の説明】 10 固定型 20 スタンパー 21 パターン形成部 22 位置決め用切欠き 30 位置決めブロック 31 固定用凹陥部 32 位置決め用突起 40 可動型 41 製品部 42 スプリング付可動ピン 50 金型 100 導光板
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view showing a stamper positioned and fixed in a fixed mold. FIG. 2 is an explanatory view schematically showing a state immediately after a mold opening is started. FIG. 3 is an explanatory view schematically showing a mold opening state of a mold. FIG. 4 is an explanatory view schematically showing a closed state of a mold. FIG. 5 is a schematic side view showing a state where a stamper is positioned. FIG. 6 is a schematic front view showing a state where the stamper is positioned. DESCRIPTION OF SYMBOLS 10 Fixed die 20 Stamper 21 Pattern forming part 22 Notch for positioning 30 Positioning block 31 Depressed part for fixing 32 Positioning protrusion 40 Movable mold 41 Product part 42 Movable pin with spring 50 Mold 100 Light guide plate

Claims (1)

【特許請求の範囲】 【請求項1】スタンパーによりパターンが転写される導
光板を成形する導光板成形用の金型において、一方の金
型部材に位置決め手段により取着されたスタンパーを、
対向する他方の金型部材に設けられた上死点がPL線よ
り前方に突出するストロークを有する押圧手段により押
圧することを特徴とする導光板成形用の金型。
Claims: 1. A mold for molding a light guide plate for molding a light guide plate onto which a pattern is transferred by a stamper, the stamper attached to one of the mold members by a positioning means.
A mold for molding a light guide plate, wherein a top dead center provided on the other opposite mold member is pressed by a pressing means having a stroke protruding forward from the PL line.
JP2001287476A 2001-09-20 2001-09-20 Mold for molding light guide plate Expired - Fee Related JP3524897B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001287476A JP3524897B2 (en) 2001-09-20 2001-09-20 Mold for molding light guide plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001287476A JP3524897B2 (en) 2001-09-20 2001-09-20 Mold for molding light guide plate

Publications (2)

Publication Number Publication Date
JP2003094439A true JP2003094439A (en) 2003-04-03
JP3524897B2 JP3524897B2 (en) 2004-05-10

Family

ID=19110284

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP3524897B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101109749B1 (en) 2010-03-16 2012-04-06 주식회사 코스모인 Apparatus and method for manufacturing light guide plate
CN116533297A (en) * 2023-05-25 2023-08-04 广东鑫亿帆材料科技有限公司 Production and manufacturing process of flame-retardant magnetic attraction film

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101109749B1 (en) 2010-03-16 2012-04-06 주식회사 코스모인 Apparatus and method for manufacturing light guide plate
CN116533297A (en) * 2023-05-25 2023-08-04 广东鑫亿帆材料科技有限公司 Production and manufacturing process of flame-retardant magnetic attraction film
CN116533297B (en) * 2023-05-25 2023-10-17 广东鑫亿帆材料科技有限公司 Production and manufacturing process of flame-retardant magnetic attraction film

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