JP2006252618A

JP2006252618A - Manufacturing method of optical disk base plate

Info

Publication number: JP2006252618A
Application number: JP2005064521A
Authority: JP
Inventors: Hitoshi Usami; 仁宇佐美
Original assignee: Ricoh Co Ltd
Current assignee: Ricoh Co Ltd
Priority date: 2005-03-08
Filing date: 2005-03-08
Publication date: 2006-09-21
Anticipated expiration: 2025-03-08
Also published as: JP4327751B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of an optical disk base plate, which removes inner and outer edge burrs with a simple means. <P>SOLUTION: Provided are the following manufacturing methods of an optical disk base plate: (1) a method which flattens the inner and outer edge burrs of a molded resin base plate by using a press machine, a roller, and a base plate turn table; (2) the above mentioned method (1) but using a press machine having a roller at the top end of a reciprocating cylinder or a rotating cylinder; (3) the method mentioned in the above (1) or (2) and flattening the burs by attracting a base plate onto the turn table to turn and pressing down the inner burrs with the roller; and (4) the method mentioned in any one of the above (1), (2) or (3) of flattening the burs on both surfaces of the base plate by attracting the plate onto the turn table which holds the plate by the inner edge to turn and sandwiching the plate between two rollers with pressure to both upper and lower sides of the plate. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、光ディスク基板の製造方法に関する。 The present invention relates to a method for manufacturing an optical disk substrate.

樹脂成形機で成形された基板には、金型の嵌め合い部である内周部及び外周部端面にバリが発生する。特に外周部のバリ（外周バリ）は形状及び大きさによっては人体に損傷を与えることもあるため問題となる。また、内周部のバリ（内周バリ）は、貼り合わせ型光記録媒体において、接着層を均一に塗付するのを妨げ、品質や外観不良の原因となる。
このような問題をなくすため、樹脂成形機の金型構造を工夫してバリの発生を防止することも可能であるが、特殊な形状に変更しなければならないため大変である。
基板に発生したバリを除去する従来技術としては、レーザーを用いて溶融させる方法があるが、バリ部にレーザーを確実に照射することは生産上困難であり、装置も大掛かりになる。また、プレスにより圧延する方法があり、除去されたバリが飛び散らない利点があるが、プレスだけでは高圧力を与えないとバリを潰すことができない。
例えば、特許文献１には、バリ除去にプレス等を使用することが記載されているが、具体的なプレス方法やプレスによる外周バリの除去については述べていない。
また、特許文献２には、バリ除去にプレスを使用し、受け台にモーターを直結して回転自在にする方法が開示されているが、内周バリを押圧体全面で押し潰す方法であり、押圧体にローラーを用いることや、外周バリの除去については記載も示唆もされていない。 In the substrate molded by the resin molding machine, burrs are generated on the inner peripheral portion and the outer peripheral portion end face, which are fitting portions of the mold. In particular, the burr at the outer peripheral portion (outer peripheral burr) is a problem because it may damage the human body depending on the shape and size. Further, the inner peripheral burr (inner peripheral burr) prevents the adhesive layer from being applied uniformly in the bonded optical recording medium, and causes quality and appearance defects.
In order to eliminate such a problem, it is possible to devise the mold structure of the resin molding machine to prevent the occurrence of burrs, but it is difficult because it must be changed to a special shape.
As a conventional technique for removing burrs generated on a substrate, there is a method of melting using a laser. However, it is difficult in production to reliably irradiate a burr portion with a laser, and an apparatus becomes large. In addition, there is a method of rolling with a press, and there is an advantage that the removed burrs are not scattered, but the burrs cannot be crushed with a press alone unless high pressure is applied.
For example, Patent Document 1 describes that a press or the like is used for removing burrs, but does not describe a specific pressing method or removal of outer peripheral burrs by pressing.
Further, Patent Document 2 discloses a method of using a press for burr removal, and directly connecting a motor to a cradle to make it rotatable, but is a method of crushing an inner peripheral burr over the entire pressing body, There is no description or suggestion about using a roller for the pressing body or removing the outer peripheral burr.

特開平９−１５３２３４号公報JP-A-9-153234 特開平９−２４５３８４号公報JP-A-9-245384

本発明は、上記従来技術の問題点を解決し、簡便な手段で内周バリ及び外周バリを除去することができる光ディスク基板の製造方法の提供を目的とする。 An object of the present invention is to solve the above-mentioned problems of the prior art and provide an optical disk substrate manufacturing method capable of removing the inner peripheral burrs and the outer peripheral burrs with simple means.

上記課題は、次の１）〜７）の発明によって解決される。
１）樹脂成形された基板の内周バリ及び外周バリを、プレス機とローラーと基板回転支持台を用いることにより、押し潰すことを特徴とする光ディスク基板の製造方法。
２）直動シリンダー又は旋回シリンダーの先端にローラーを設置したプレス機を用いることを特徴とする１）記載の光ディスク基板の製造方法。
３）ローラーとして転がり軸受を用い、ローラーの角度を変更できる機構を設けることにより、光ディスクの記録エリアに損傷を与えることなくバリを除去することを特徴とする１）又は２）記載の光ディスク基板の製造方法。
４）基板回転支持台に基板を吸引して回転させ、内周バリにローラーを当てて圧力をかけることにより、バリを押し潰すことを特徴とする１）〜３）の何れかに記載の光ディスク基板の製造方法。
５）基板回転支持台を外周支持部のある形状にし、基板を吸引して回転させ、外周バリにローラーを当てて圧力をかけることにより、バリを押し潰すことを特徴とする１）〜４）の何れかに記載の光ディスク基板の製造方法。
６）内周支持形式の基板回転支持台を用い、基板を吸引して回転させ、基板の表面と裏面の外周バリに上面と下面からそれぞれローラーを当てて圧力をかけて挟み込み、両面のバリを押しつぶすことを特徴とする１）〜４）の何れかに記載の光ディスク基板の製造方法。
７）１）〜６）の何れかの製造方法により製造された光ディスク基板。 The above problems are solved by the following inventions 1) to 7).
1) A method of manufacturing an optical disk substrate, wherein the inner peripheral burr and outer peripheral burr of a resin-molded substrate are crushed by using a press, a roller, and a substrate rotation support base.
2) The method for producing an optical disk substrate according to 1), wherein a press machine having a roller installed at the tip of a linear cylinder or a revolving cylinder is used.
3) A burr is removed without damaging the recording area of the optical disc by using a rolling bearing as a roller and providing a mechanism capable of changing the angle of the roller. Production method.
4) The optical disk according to any one of 1) to 3), wherein the substrate is sucked and rotated on a substrate rotation support base, and the burrs are crushed by applying pressure by applying a roller to the inner circumferential burr. A method for manufacturing a substrate.
5) The substrate rotation support base is formed into a shape having an outer periphery support portion, the substrate is sucked and rotated, and the burrs are crushed by applying pressure by applying a roller to the outer periphery burrs 1) to 4). A method of manufacturing an optical disk substrate according to any one of the above.
6) Using an inner periphery support type substrate rotation support stand, suck the substrate and rotate it, and apply pressure to the outer peripheral burrs on the front and back surfaces of the substrate by applying rollers from the upper and lower surfaces, respectively, The method for manufacturing an optical disk substrate according to any one of 1) to 4), wherein the optical disk substrate is crushed.
7) An optical disk substrate manufactured by the manufacturing method according to any one of 1) to 6).

以下、上記本発明について詳しく説明する。
本発明はバリの除去にプレス機とローラーと基板回転支持台を利用する。具体的には、プレス機の先端にローラーを設置し、基板に対する接触面積を減らして単位面積当りの圧力を上げることを特徴とする。更に、基板を吸引できる回転支持台を用いて、基板を吸引して回転させつつローラーを押し当てることにより、プレス機に供給する圧力が低減しても確実にバリを潰すことができる。
特に、基板の外周端に発生するバリは、例えば、基板回転支持台に基板を吸引してモーターで回転させ、ロータリーアクチュエータ等により加圧したベアリングで基板端部を挟むことにより、確実に押し潰すことができる。また、基板の内周部に発生するバリは、例えば、基板回転支持台に基板を吸引してモーターで回転させ、直動シリンダー等で加圧したベアリングを基板の内周部に押し当てることにより、確実に押し潰すことができる。
更に、低圧力でバリが除去できるため、プレス機を小型化でき、プレス方法も旋回方式及び直動方式から適宜選択できるため、小スペースで安価に実施することができる。また、小スペースで実現可能であることから、既存の光ディスク生産ラインにおいて、回転機構を有する工程に容易に設置できる。 Hereinafter, the present invention will be described in detail.
The present invention uses a press, a roller, and a substrate rotation support for removing burrs. Specifically, a roller is installed at the tip of the press machine to reduce the contact area with the substrate and increase the pressure per unit area. Further, by using a rotary support table that can suck the substrate and pressing the roller while sucking and rotating the substrate, the burr can be reliably crushed even if the pressure supplied to the press machine is reduced.
In particular, burrs generated at the outer peripheral edge of the substrate are reliably crushed by, for example, sucking the substrate onto a substrate rotation support base and rotating it with a motor, and pinching the substrate end with a bearing pressurized by a rotary actuator or the like. be able to. In addition, burrs generated on the inner periphery of the substrate can be generated by, for example, sucking the substrate onto the substrate rotation support base and rotating it with a motor, and pressing a bearing pressurized with a linear cylinder or the like against the inner periphery of the substrate. Can be crushed reliably.
Furthermore, since the burrs can be removed with a low pressure, the press machine can be downsized, and the pressing method can be appropriately selected from the swiveling method and the direct acting method. In addition, since it can be realized in a small space, it can be easily installed in a process having a rotation mechanism in an existing optical disc production line.

本発明によれば、簡便な手段で内周バリ及び外周バリを除去することができる光ディスク基板の製造方法を提供できる。 According to the present invention, it is possible to provide a method of manufacturing an optical disc substrate that can remove the inner peripheral burrs and the outer peripheral burrs with simple means.

以下、実施例及び比較例により本発明を更に具体的に説明するが、本発明は、これらの実施例により限定されるものではない。 EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention further more concretely, this invention is not limited by these Examples.

実施例１
図１に示した装置を用いてバリ取りを行なった。
結果を表１、図１〜図２に示すが、バリ取り前に比べて、バリ取り後には、バリ高さが低くなっていることが分かる。
Example 1
Deburring was performed using the apparatus shown in FIG.
The results are shown in Table 1 and FIGS. 1-2, and it can be seen that the burr height is lower after deburring than before deburring.

実施例２
図４に示した装置を用いてバリ取りを行なった。
結果を表２、図５〜図６に示すが、バリ取り前に比べて、バリ取り後には、バリ高さが低くなっていることが分かる。

Example 2
Deburring was performed using the apparatus shown in FIG.
The results are shown in Table 2 and FIGS. 5 to 6, and it can be seen that the burr height is lower after deburring than before deburring.

実施例１のバリ取り構造を示す図。FIG. 3 is a diagram illustrating a deburring structure according to the first embodiment. 実施例１の実験結果を示す図（バリ取り前）。The figure which shows the experimental result of Example 1 (before deburring). 実施例１の実験結果を示す図（バリ取り後）。The figure which shows the experimental result of Example 1 (after deburring). 実施例２のバリ取り構造を示す図。FIG. 6 shows a deburring structure of Example 2. 実施例２の実験結果を示す図（バリ取り前）。The figure which shows the experimental result of Example 2 (before deburring). 実施例２の実験結果を示す図（バリ取り後）。The figure which shows the experimental result of Example 2 (after deburring).

Claims

An optical disk substrate manufacturing method, comprising: crushing an inner peripheral burr and an outer peripheral burr of a resin-molded substrate by using a press, a roller, and a substrate rotation support base.

2. The method of manufacturing an optical disk substrate according to claim 1, wherein a press machine in which a roller is installed at the tip of a linear cylinder or a revolving cylinder is used.

3. The method of manufacturing an optical disk substrate according to claim 1, wherein a burr is removed without damaging the recording area of the optical disk by using a rolling bearing as the roller and providing a mechanism capable of changing the angle of the roller. .

The optical disk substrate according to any one of claims 1 to 3, wherein the burrs are crushed by sucking and rotating the substrate on a substrate rotation support, and applying pressure by applying a roller to the inner circumferential burr. Production method.

The substrate rotation support base is formed into a shape having an outer periphery support portion, the substrate is sucked and rotated, and a roller is applied to the outer periphery burr to apply pressure, thereby crushing the burr. A method for producing an optical disk substrate according to claim 1.

Using an inner peripheral support type substrate rotation support base, suck and rotate the substrate, apply pressure to the outer peripheral burrs on the front and back surfaces of the substrate by applying pressure from the upper and lower surfaces respectively, and crush the burrs on both sides The method for manufacturing an optical disk substrate according to claim 1, wherein:

An optical disk substrate manufactured by the manufacturing method according to claim 1.