JP2002052566A - Method for molding key top - Google Patents
Method for molding key topInfo
- Publication number
- JP2002052566A JP2002052566A JP2000227228A JP2000227228A JP2002052566A JP 2002052566 A JP2002052566 A JP 2002052566A JP 2000227228 A JP2000227228 A JP 2000227228A JP 2000227228 A JP2000227228 A JP 2000227228A JP 2002052566 A JP2002052566 A JP 2002052566A
- Authority
- JP
- Japan
- Prior art keywords
- inner shell
- outer shell
- molding cavity
- shell
- mold
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14008—Inserting articles into the mould
- B29C45/14016—Intermittently feeding endless articles, e.g. transfer films, to the mould
- B29C45/14024—Intermittently feeding endless articles, e.g. transfer films, to the mould and punching or cutting a portion from the endless articles during mould closing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1671—Making multilayered or multicoloured articles with an insert
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/46—Knobs or handles, push-buttons, grips
- B29L2031/466—Keypads, keytops
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2229/00—Manufacturing
- H01H2229/044—Injection moulding
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Switches (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はレター・キーの製造
方法に関し、特に各種字形、サイズのキー・トップ成型
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a letter key, and more particularly to a method of molding a key top having various shapes and sizes.
【０００２】[0002]
【従来の技術】一般にコンピュータ・キーボードのキ
ー、電話機の番号キー、或いは計算機の操作キー…など
のキー・トップは、それぞれ文字や記号、図案を付け
て、識別や操作が便利であるように図っている。従来例
のキー・トップ成型方法（台湾専利公報第３１１１１６
号）は、図５に示すように、先ず基材１の背面に濃い地
色２を印刷して、図案や文字層を印刷する部位は空白に
して残し、次にこの空白部位に透明な図案や文字層２０
１を印刷している。図案や文字層２０１はカラーまたは
白色で形成しても良い。続いて、金型を利用して地色２
と、図案や文字層２０１が印刷された基材１とを熱圧
（ホットプレス）成形によりレター・キー形状の外シェ
ル１’に絞り成型して、最後にこのレター・キー形状の
外シェル１’内部に内シェル３’を射出成型してレター
・キーのキー・トップを完成する。2. Description of the Related Art In general, key tops such as a computer keyboard key, a telephone number key, and a computer operation key are provided with letters, symbols, and designs, respectively, to facilitate identification and operation. ing. Conventional key top molding method (Taiwan Patent Publication No. 31116)
As shown in FIG. 5, first, a dark ground color 2 is printed on the back surface of the base material 1 and a portion for printing a design or a character layer is left blank, and then a transparent pattern is formed on the blank portion. And character layer 20
1 is printed. The design and the character layer 201 may be formed in color or white. Then, using the mold, ground color 2
And the substrate 1 on which the design and the character layer 201 are printed are drawn into a letter-key shaped outer shell 1 'by hot-pressure (hot press) molding, and finally the letter-key shaped outer shell 1 is formed. 'Inner shell 3' is injection molded inside to complete the key top of the letter key.
【０００３】[0003]
【発明が解決しようとする課題】上記キー・トップの成
型方法は、金型を利用して地色２と、図案や文字層２０
１が印刷された基材１とを熱圧成形によりレター・キー
形状の外シェル１’に成型するので、元来基材１に印刷
された図案や文字層２０１が熱圧成形の操作を行う際に
変形し易い。この課題の対策として、製作する前に必ず
ポンチング絞りによって基材１の延伸率を予め計算し
て、図案や文字層２０１をそれに応じて予め変形体に印
刷し、ポンチングされた変形体が絞り変形して正常の文
字や図案になるようにしているが、製作が複雑で品質が
安定しないという問題がある。The above-mentioned method for molding the key top uses a metal mold to form a ground color 2, a pattern and a character layer 20.
Since the base material 1 on which the base material 1 is printed is formed into the outer shell 1 ′ having a letter key shape by hot pressing, the design or the character layer 201 originally printed on the base material 1 performs the hot pressing operation. It is easy to be deformed. As a countermeasure to this problem, before manufacturing, the drawing rate of the base material 1 is always calculated in advance by punching and drawing, and the pattern and the character layer 201 are printed on the deformed body in advance according to the drawing rate, and the punched deformed body is drawn and deformed. However, there is a problem that the production is complicated and the quality is not stable.
【０００４】上記従来の技術のキー・トップ成型方法に
おける問題点に鑑み、本発明は、基材に印刷された文字
や図案が成型によって変形することなく、内シェルと外
シェルと基材とが堅固に一体結合して、不良率を低め得
ると同時に、生産効率が向上して製造コストを軽減でき
るキー・トップ成型方法を提供することを目的とする。[0004] In view of the above-mentioned problems in the conventional key top molding method, the present invention provides a method of forming the inner shell, the outer shell and the base material without deforming the characters or designs printed on the base material by molding. It is an object of the present invention to provide a key top molding method capable of firmly joining together to reduce a defective rate, and at the same time improve production efficiency and reduce manufacturing cost.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、本発明は、ａ）文字、図案が印刷され、それぞれ周
縁に環状の目打ちを備えた多数の片状素材が形成されて
いるプラスチックシートの基材を予め準備する工程と、
ｂ）固定金型と移動金型とを準備して、この固定金型の
両側辺寄りの対称部位にそれぞれセットの外シェル成形
キャビティと内シェル成形キャビティとを設け、これら
外シェル成形キャビティを前記内シェル成形キャビティ
よりも大きくし、前記移動金型の各外シェル成形キャビ
ティと各内シェル成形キャビティとが対応する部位にそ
れぞれセットをなす定位部を設ける工程と、ｃ）前記移
動金型と前記固定金型とを閉じ合せて、前記定位部をそ
れぞれ前記外シェル成形キャビティの内部と前記内シェ
ル成形キャビティの内部とに位置付け、射出装置により
プラスチック原料を前記内シェル成形キャビティの内部
に導入して内シェルを形成する工程と、ｄ）前記移動金
型を前記固定金型から移動して離脱させ、前記内シェル
をそのまま定位部に滞留定位させる工程と、ｅ）前記移
動金型を１８０度回転移動して、前記定位部上の前記内
シェルを前記外シェル成形キャビティに対応させて、他
のセットの定位部を前記内シェル成形キャビティに対応
させ、且つ前記基材を前記固定金型の前記外シェル成形
キャビティの開口部位に載置させて、各片状素材をそれ
ぞれ各外シェル成形キャビティと各内シェルとに対応さ
せる工程と、ｆ）前記移動金型を再び前記固定金型に閉
じ合せて、この際、前記内シェルが直接前記基材を押圧
し、前記片状素材の周縁に目打ちが設けられていること
から、前記片状素材が前記内シェルの押圧により押し抜
かれて、前記基材と分離して前記外シェル成形キャビテ
ィの内部に押し遣られ、前記内シェル周面と前記外シェ
ル成形キャビティ内周面との間に隙間が生ずる工程と、
ｇ）射出装置によりプラスチック原料をそれぞれ前記外
シェル成形キャビティと前記内シェル成形キャビティの
内部とに注入して、前記隙間内で前記外シェルを形成す
ると同時に、前記内シェル成形キャビティ内でもう一つ
の内シェルを形成させ、前記外シェルが前記片状素材と
前記内シェルと一体に結合し、前記外シェルの下端縁も
前記外シェル成形キャビティの周縁沿いに設けられた凹
陥部内の前記基材と一体に結合する工程と、ｈ）前記移
動金型と前記固定金型とを分離して、そのうちのセット
の前記定位部からレター・キーのキー・トップ製品を取
出し、他方のセットの前記定位部に前記内シェルを滞留
定位させる工程と、ｉ）工程ｅ）〜ｈ）を反覆する工程
と、を順に行って構成される。In order to achieve the above-mentioned object, the present invention provides a plastic sheet comprising a) a plurality of sheet-like materials on which characters and designs are printed, each of which is provided with a ring-shaped perforation at the periphery. A step of preparing a base material in advance;
b) A fixed mold and a movable mold are prepared, and a set of outer shell molding cavities and inner shell molding cavities are provided at symmetrical portions near both sides of the fixed mold, respectively. Providing a localization part which is larger than the inner shell molding cavity and which sets each of the outer shell molding cavities and each inner shell molding cavity of the moving mold corresponding to each other; c) the moving mold and the moving mold; Close the fixed mold, position the localization part in the inside of the outer shell molding cavity and the inside of the inner shell molding cavity, respectively, and introduce the plastic raw material into the inside of the inner shell molding cavity by an injection device. Forming an inner shell; and d) moving the movable mold away from the fixed mold so as to be separated from the stationary mold, and leaving the inner shell as it is in the orientation portion. And e) rotating the moving mold by 180 degrees so that the inner shell on the localization portion corresponds to the outer shell molding cavity, and forming another set of localization portions into the inner shell molding. Corresponding to the cavities, and placing the base material at the opening portion of the outer shell molding cavity of the fixed mold, and causing each piece material to correspond to each outer shell molding cavity and each inner shell. And f) closing the movable mold again with the fixed mold. At this time, the inner shell directly presses the base material, and the perforations are provided on the periphery of the piece-shaped material. The flaky material is pushed out by the pressing of the inner shell, separated from the base material and pushed into the outer shell molding cavity, and is moved between the inner shell peripheral surface and the outer shell molding cavity inner peripheral surface. Gap A step occurs,
g) Injecting plastic material into the outer shell molding cavity and the inside of the inner shell molding cavity respectively by an injection device to form the outer shell in the gap and at the same time another one in the inner shell molding cavity. An inner shell is formed, the outer shell is integrally joined with the piece-shaped material and the inner shell, and a lower edge of the outer shell is also provided with the base material in a recess provided along a periphery of the outer shell molding cavity. And h) separating said moving mold and said fixed mold, taking out the key top product of the letter key from said localization part of one set, and said localization part of the other set. And i) repeating steps e) to h).
【０００６】そして、前記内シェル成形キャビティの奥
側端面と内周面との連接部位に多数の突起部を設けて、
前記内シェルを成型完了した後に、前記内シェルの上端
面に多数の凹み溝を形成し、且つ前記外シェルを成型す
る際に、プラスチック原料の一部が凹み溝内に流入して
多数の結合部を形成し、これにより前記内シェルと前記
外シェルとの結合をより強化させるようにしたり、前記
内シェルを透明な材料で形成して、前記片状素材の文
字、図案の部位が透明なカラー印刷であり、その他の部
分が不透明であるようにしたりすると一層好ましい。[0006] A large number of projections are provided at the connecting portion between the inner end surface and the inner end surface of the inner shell molding cavity,
After the molding of the inner shell is completed, a number of concave grooves are formed in the upper end surface of the inner shell, and when the outer shell is molded, a part of the plastic raw material flows into the concave grooves to form a large number of couplings. Forming a part, thereby further strengthening the connection between the inner shell and the outer shell, or forming the inner shell of a transparent material, so that the characters of the flaky material and the parts of the design are transparent. It is more preferable to use color printing and make other parts opaque.
【０００７】上記のように構成された本発明は、同一機
械設備で内シェル、外シェルを射出成型して、内シェル
を利用して直接基材の片状素材を押抜き分離させること
ができ、且つ外シェルの射出成型の際に、内シェル、外
シェル、片状素材、基材を堅固に一体連結できて、同時
に外シェル底縁を目打ち部位外側の基材上端面に固結さ
せ得るので、全体構造が牢固なキー・トップを簡単に仕
上げることができる。また、片状素材に印刷された文
字、図案は、基材が深絞り変形されないので字形なども
変形する恐れがなく、従来技術のように製造する前に基
材の延伸率を予め計算する必要がない。According to the present invention having the above-described structure, the inner shell and the outer shell can be injection-molded with the same mechanical equipment, and the flake material of the base material can be directly punched and separated using the inner shell. In addition, during the injection molding of the outer shell, the inner shell, the outer shell, the piece-shaped material, and the base material can be firmly connected together, and at the same time, the bottom edge of the outer shell can be fixed to the upper end surface of the base material outside the perforated portion. Therefore, it is possible to easily finish a key top having a solid overall structure. In addition, the characters and designs printed on the flake material do not have to be deformed because the base material is not deep drawn, so there is no danger of deformation, and it is necessary to calculate the stretching ratio of the base material before manufacturing as in the prior art. There is no.
【０００８】[0008]
【発明の実施の形態】以下、本発明を実施の形態に基づ
いて具体的に説明するが、本発明はこれら実施の形態だ
けに限定されるものではない。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on embodiments, but the present invention is not limited to these embodiments.
【０００９】まず、第１の実施の形態を図１および２を
用いて説明する。First, a first embodiment will be described with reference to FIGS.
【００１０】図１に示すのは、本発明のキー・トップ成
型方法における第１の実施の形態であり、その使用する
設備は固定金型１００と移動金型２００とを含み、この
固定金型１００は下端面の両側にそれぞれ一方が外向き
開口のセットである外シェル成形キャビティ１１０と内
シェル成形キャビティ１２０とが設けられており、外シ
ェル成形キャビティ１１０の開口面積および深度が内シ
ェル成形キャビティ１２０のそれよりも大きく、外シェ
ル成形キャビティ１１０および内シェル成形キャビティ
１２０の側辺にそれぞれ材料注入径路１３０、１４０を
形成して、外シェル成形キャビティ１１０の開口周辺に
凹陥部１５０を設ける。一方、移動金型２００は上記セ
ットである外シェル成形キャビティ１１０と内シェル成
形キャビティ１２０とが対応する部位にそれぞれセット
の定位部２１０を装設して、移動金型２００のもう一方
の面の中央部に回転手段２３０を延設し、移動金型２０
０を連動して固定金型１００に相対して回転できるよう
にする。FIG. 1 shows a first embodiment of a key top molding method according to the present invention. The equipment used includes a fixed mold 100 and a movable mold 200. An outer shell molding cavity 110 and an inner shell molding cavity 120 each having a set of outward openings are provided on both sides of the lower end surface of the inner shell molding cavity 100. 120, material injection paths 130 and 140 are formed on the sides of the outer shell molding cavity 110 and the inner shell molding cavity 120, respectively, and a recess 150 is provided around the opening of the outer shell molding cavity 110. On the other hand, the movable mold 200 is provided with the set positioning portion 210 at a position corresponding to the outer shell molding cavity 110 and the inner shell molding cavity 120 which are the above-described set, and the other surface of the movable mold 200 is provided. The rotating means 230 is extended in the center, and
0 can be rotated relative to the fixed mold 100 in conjunction with the zero.
【００１１】そして、上記設備を利用して、下記工程を
順に行えばレター・キーのキー・トップを成型すること
ができる。The key top of the letter key can be formed by performing the following steps in order using the above facilities.
【００１２】Ａ．図１（Ａ）に示すように、予め文字、
図案が印刷されたプラスチックシート基材１０を準備
し、第１の実施の形態ではＰＣ（ポリカーボネート）プ
ラスチック材料を基材１０の製作材料とし、文字、図案
は一般の印刷技術により基材１０のいずれか一方の面に
印刷している。そのうちの文字、図案の部位が透明なカ
ラー印刷であり、その他の部位は不透明であり、且つ基
材１０の文字、図案を設けた部位にそれぞれ片状素材１
１を形成して、これら片状素材１１の周縁に予め複数の
環状の目打ち１２を設け、更に後述の材料注入工程と組
合せて、片状素材１１の周縁の適所に材料注入口１３を
装設する。A. As shown in FIG.
A plastic sheet substrate 10 on which a design is printed is prepared. In the first embodiment, a PC (polycarbonate) plastic material is used as a material for forming the substrate 10, and characters and designs are formed on the base material 10 by a general printing technique. Or on one side. Among them, the characters and designs are transparent color printing, the other parts are opaque, and the flaky material 1 is provided on the base 10 where the characters and designs are provided.
1, a plurality of annular perforations 12 are provided in advance on the peripheral edge of the strip-shaped raw material 11, and a material injection port 13 is provided at an appropriate position on the peripheral edge of the strip-shaped raw material 11 in combination with a material injection step described later. I do.
【００１３】Ｂ．図１（Ｂ）に示すように、移動金型２
００が固定金型１００の設置方向へ移動して互いに閉じ
合い、且つ両セットの定位部２１０をそれぞれ外シェル
成形キャビティ１１０および内シェル成形キャビティ１
２０の内部に位置付けて、射出装置によりプラスチック
原料を材料注入径路１４０から内シェル成形キャビティ
１２０内へ導入して内シェル２０を形成する。B. As shown in FIG.
00 moves in the installation direction of the fixed mold 100 and closes to each other, and the localization portions 210 of both sets are respectively connected to the outer shell molding cavity 110 and the inner shell molding cavity 1.
The inner shell 20 is formed by introducing a plastic raw material from the material injection path 140 into the inner shell molding cavity 120 by using an injection device positioned inside the inner shell 20.
【００１４】Ｃ．図１（Ｃ）に示すように、移動金型２
００を固定金型１００から移動分離させて、内シェル２
０を定位部２１０に滞留定位させる。C. As shown in FIG.
00 is moved and separated from the fixed mold 100 so that the inner shell 2
0 is localized in the localization unit 210.
【００１５】Ｄ．図１（Ｄ）に示すように、回転手段２
３０を１８０度駆動回転して、移動金型２００を固定金
型１００に相対して１８０度回転させ、元来右側にあっ
た内シェル２０が滞留している定位部２１０を左側に移
動して、内シェル２０を外シェル成形キャビティ１１０
に対応させ、且つ基材１０を固定金型１００の外シェル
成形キャビティ１１０の凹陥部１５０内に位置付けて、
各片状素材１１をそれぞれ各外シェル成形キャビティ１
１０および内シェル２０に対応させ、元来左側にあった
空の定位部２１０が右側に回転移動する。D. As shown in FIG.
30 is rotated by 180 degrees, the movable mold 200 is rotated by 180 degrees relative to the fixed mold 100, and the localization section 210 where the inner shell 20 originally staying on the right stays is moved to the left. , Inner shell 20 into outer shell molding cavity 110
And positioning the substrate 10 in the recess 150 of the outer shell molding cavity 110 of the fixed mold 100,
Each flaky material 11 is individually transferred to each outer shell molding cavity 1.
The empty localization part 210 originally located on the left side is rotated to the right side so as to correspond to the inner shell 10 and the inner shell 20.
【００１６】Ｅ．図１（Ｅ）に示すように、移動金型２
００が固定金型１００を設けた方向に移動して互いに閉
じ合せ、この際、内シェル２０が直接基材１０に対して
押し抜き操作を行い、上述のように片状素材１１の周縁
に目打ち１２が設けられていることから、片状素材１１
が内シェル２０の押圧により押し抜かれて基材１０と分
離し、且つ外シェル成形キャビティ１１０内部に押し遣
られて抵触し、内シェル２０の周面と外シェル成形キャ
ビティ１１０の内周面との間に隙間Ａが生ずる。E. As shown in FIG.
00 moves in the direction in which the fixed mold 100 is provided and closes to each other. At this time, the inner shell 20 directly performs a punching operation on the base material 10 and perforates the peripheral edge of the flake material 11 as described above. 12, the flaky material 11 is provided.
Is pushed out by the pressing of the inner shell 20 and separated from the base material 10, and is pushed into the inside of the outer shell molding cavity 110 so as to be in contact therewith, so that the inner peripheral surface of the inner shell 20 and the inner peripheral surface of the outer shell molding cavity 110 A gap A occurs between them.
【００１７】Ｆ．図１（Ｆ）に示すように、射出装置に
よりプラスチック原料を材料注入径路１３０、１４０か
ら外シェル成形キャビティ１１０および内シェル成形キ
ャビティ１２０に射出注入して、上記隙間Ａ内で外シェ
ル３０を形成し、内シェル成形キャビティ１２０内でも
う一つの内シェル２０を形成させる。外シェル３０は片
状素材と内シェル２０と一体に結合でき、外シェル３０
の下端縁と凹陥部１５０内の基材１０と一体に固結する
ことができる。F. As shown in FIG. 1 (F), a plastic raw material is injected and injected into the outer shell molding cavity 110 and the inner shell molding cavity 120 from the material injection paths 130 and 140 by an injection device to form the outer shell 30 in the gap A. Then, another inner shell 20 is formed in the inner shell molding cavity 120. The outer shell 30 can be integrally connected to the flaky material and the inner shell 20,
And the base material 10 in the recess 150 can be integrally consolidated.
【００１８】Ｇ．金型を開いて、移動金型２００と固定
金型１００とを分離させ、すなわち、左側の定位部２１
０からレター・キーのキートップ４０を取出して、右側
の他方の定位部２１０に内シェル２０を残留定位させる
（図１（Ｃ）が示す状態）。G. When the mold is opened, the movable mold 200 and the fixed mold 100 are separated from each other.
The key top 40 of the letter key is taken out from 0, and the inner shell 20 is left and localized in the other localization section 210 on the right side (the state shown in FIG. 1C).
【００１９】Ｈ．工程Ｄ〜Ｇを循環反覆して大量のキー
・トップを生産することができる。H. Steps D to G can be repeated to produce a large number of key tops.
【００２０】したがって、この成型方法を利用すれば、
同一の成形機械で内シェル２０、外シェル３０を射出成
型し、内シェル２０を利用して直接基材１０の片状素材
１１を押し抜き分離させることができ、且つ外シェル３
０の射出成型の際に、内シェル２０、外シェル３０、片
状素材１１、基材１０を堅固に連結させることができ
る。図２が示すように、外シェル３０の成型により外シ
ェル３０の内周面にそれぞれ内シェル２０と片状素材１
１の周縁とを一体に固結し、同時に外シェル３０の底縁
を目打ち１２の外側の基材１０の上端面に固結させ得る
ので、全体構造が牢固なキー・トップに仕上げることが
できる。また、片状素材１１に印刷された文字、図案
は、基材が押圧成形されないので変形する恐れがなく、
製作上比較的容易で延伸率を予め計算する必要がない。Therefore, if this molding method is used,
The inner shell 20 and the outer shell 30 are injection-molded by the same molding machine, and the flake material 11 of the base material 10 can be directly punched and separated using the inner shell 20, and the outer shell 3
At the time of injection molding of No. 0, the inner shell 20, the outer shell 30, the flaky material 11, and the base material 10 can be firmly connected. As shown in FIG. 2, the inner shell 20 and the flake material 1 are formed on the inner peripheral surface of the outer shell 30 by molding the outer shell 30.
1 and the bottom edge of the outer shell 30 can be simultaneously bonded to the upper end surface of the base material 10 outside the perforations 12, so that the entire structure can be finished to a robust key top. . Also, the characters and designs printed on the flake material 11 are not deformed because the base material is not pressed,
It is relatively easy to manufacture, and there is no need to calculate the stretching ratio in advance.
【００２１】つまり、第１の実施の形態における内シェ
ル２０は透明な材質で造られて、基材１０も透明な材質
で造って良く、且つ片状素材１１上に印刷された文字、
図案の部位が透明なカラーであり、その他部分は不透明
であるので、外シェル３０が成型完成すれば、文字、図
案の部分が透明であるため、レター・キー構造内に発光
手段が設けられていると、内シェル２０が透明であるこ
とにより、文字、図案をはっきりと表示することができ
る。That is, the inner shell 20 in the first embodiment may be made of a transparent material, and the base material 10 may be made of a transparent material.
Since the part of the design is a transparent color and the other part is opaque, when the outer shell 30 is completed, the characters and the design part are transparent, so the light emitting means is provided in the letter key structure. In this case, since the inner shell 20 is transparent, characters and designs can be clearly displayed.
【００２２】次に、第２の実施の形態を図３および４を
用いて説明する。Next, a second embodiment will be described with reference to FIGS.
【００２３】図３および４が示すのは、第２の実施の形
態で、内シェル成形キャビティ１２０’の奥側の端面と
内周面との連接部位に多数の突起部１６０’を設け、内
シェル２０’を成型完了した後に、内シェル２０’の上
端面に多数の凹み溝２１’を形成して、外シェル３０’
を成型する際に、部分プラスチック原料を凹み溝２１’
内に流入させて多数の結合部３１’を形成させ、この結
合部３１’を形成したことにより内シェル２０’と外シ
ェル３０’の結合をより強化させることができる。FIGS. 3 and 4 show a second embodiment in which a large number of projections 160 'are provided at the connecting portion between the inner end surface of the inner shell molding cavity 120' and the inner peripheral surface. After the molding of the shell 20 'is completed, a number of concave grooves 21' are formed in the upper end surface of the inner shell 20 'to form the outer shell 30'.
When molding the resin, the partial plastic raw material is
The inner shell 20 ′ and the outer shell 30 ′ can be further strengthened by forming a large number of connecting portions 31 ′ by flowing into the inside.
【００２４】[0024]
【発明の効果】上記の説明から分かるように、成型工程
が簡単で、製造が容易な上、文字、図案が変形しないと
いう優れた点があると共に、内シェルと外シェルと基材
とを堅固に一体結合して、生産効率を向上させ、且つ製
造コストを軽減できる効果がある。As can be seen from the above description, the molding process is simple, the production is easy, the characters and the design are not deformed, and the inner shell, the outer shell and the base material are firmly connected. Has the effect of improving production efficiency and reducing manufacturing costs.
【図１】図１は、第１の実施の形態の成型工程を示す概
略図である。FIG. 1 is a schematic view showing a molding step according to a first embodiment.
【図２】図２は、第１の実施の形態のレター・キーのキ
ー・トップの側面図である。FIG. 2 is a side view of a key top of the letter key according to the first embodiment.
【図３】図３は、第２の実施の形態の固定金型と移動金
型とが分離した側面図である。FIG. 3 is a side view in which a fixed mold and a movable mold according to the second embodiment are separated.
【図４】図４は、第２の実施の形態のレター・キーのキ
ー・トップ側面図である。FIG. 4 is a side view of a key top of a letter key according to a second embodiment.
【図５】図５は、従来の技術の一例であるレター・キー
のキートップ製造方法によって造られたキー・トップの
断面図である。FIG. 5 is a cross-sectional view of a key top manufactured by a method of manufacturing a key top of a letter key, which is an example of the prior art.
１００…固定金型、１１０…外シェル成形キャビティ、
１２０…内シェル成形キャビティ、１３０…材料注入径
路、１４０…材料注入径路、１５０…凹陥部、２００…
移動金型、２１０…定位部、２３０…回転手段、１０…
基材、１１…片状素材、１２…目打ち、１３…材料注入
口、２０…内シェル、３０…外シェル、４０…キー・ト
ップ、Ａ…隙間、１２０’…内シェル成形キャビティ、
１６０’…突起部、２０’…内シェル、２１’…凹み
溝、３０’…外シェル、３１’…結合部100: fixed mold, 110: outer shell molding cavity,
120 ... inner shell molding cavity, 130 ... material injection path, 140 ... material injection path, 150 ... recessed part, 200 ...
Moving mold, 210: localization section, 230: rotating means, 10 ...
Substrate, 11 flake material, 12 perforation, 13 material injection port, 20 inner shell, 30 outer shell, 40 key top, A gap, 120 'inner shell molding cavity,
160 ': protrusion, 20': inner shell, 21 ': recessed groove, 30': outer shell, 31 ': coupling part
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ２９Ｌ 31:00 Ｂ２９Ｌ 31:00 Ｆターム(参考） 4F202 AD09 AF10 AG03 AH33 CA11 CB01 CB12 CB19 CB27 CC03 CK84 CQ05 4F206 AD09 AF10 AG03 AH33 JA07 JB12 JB19 JB25 JC01 JL02 JM04 JN12 JQ81 Continued on the front page (51) Int.Cl. 7 Identification code FI Theme coat II (reference) B29L 31:00 B29L 31:00 F term (reference) 4F202 AD09 AF10 AG03 AH33 CA11 CB01 CB12 CB19 CB27 CC03 CK84 CQ05 4F206 AD09 AF10 AG03 AH33 JA07 JB12 JB19 JB25 JC01 JL02 JM04 JN12 JQ81
Claims (3)
縁に環状の目打ちを備えた多数の片状素材が形成されて
いるプラスチックシートの基材を予め準備する工程と、 ｂ）固定金型と移動金型とを準備して、この固定金型の
両側辺寄りの対称部位にそれぞれセットの外シェル成形
キャビティと内シェル成形キャビティとを設け、これら
外シェル成形キャビティを前記内シェル成形キャビティ
よりも大きくし、前記移動金型の各外シェル成形キャビ
ティと各内シェル成形キャビティとが対応する部位にそ
れぞれセットをなす定位部を設ける工程と、 ｃ）前記移動金型と前記固定金型とを閉じ合せて、前記
定位部をそれぞれ前記外シェル成形キャビティと前記内
シェル成形キャビティの内部とに位置付け、射出装置に
よりプラスチック原料を前記内シェル成形キャビティの
内に導入して内シェルを形成する工程と、 ｄ）前記移動金型を前記固定金型から移動して離脱さ
せ、前記内シェルをそのまま前記定位部に滞留定位させ
る工程と、 ｅ）前記移動金型を１８０度回転移動して、前記定位部
の上にある前記内シェルを前記外シェル成形キャビティ
に対応させて、他のセットの定位部を前記内シェル成形
キャビティに対応させ、且つ前記基材を前記固定金型の
前記外シェル成形キャビティの開口部位に載置させて、
各片状素材をそれぞれ各外シェル成形キャビティと各内
シェルとに対応させる工程と、 ｆ）前記移動金型を再び前記固定金型に閉じ合せて、こ
の際、前記内シェルが直接前記基材を押圧し、前記片状
素材の周縁に目打ちが設けられていることから、前記片
状素材が前記内シェルの押圧により押し抜かれて、前記
基材と分離して前記外シェル成形キャビティの内部に押
し遣られ、前記内シェルの周面と前記外シェル成形キャ
ビティの内周面との間に隙間が生ずる工程と、 ｇ）射出装置によりプラスチック原料をそれぞれ前記外
シェル成形キャビティの内部と前記内シェル成形キャビ
ティの内部とに注入して、前記隙間内で外シェルを形成
すると同時に、前記内シェル成形キャビティの内部でも
う一つの内シェルを形成させ、前記外シェルが前記片状
素材と前記内シェルと一体に結合し、前記外シェルの下
端縁も前記外シェル成形キャビティの周縁沿いに設けら
れた凹陥部内の前記基材と一体に結合する工程と、 ｈ）前記移動金型と前記固定金型を分離して、そのうち
のセットの前記定位部からレター・キーのキー・トップ
製品を取出し、他のセットの前記定位部に前記内シェル
を滞留定位させる工程と、 ｉ）前記工程ｅ）〜ｈ）を反覆する工程と、 を順に行ってなるキー・トップ成型方法。1. a) a step of preparing a base material of a plastic sheet on which characters and designs are printed and a plurality of flaky materials each having an annular perforation formed on the periphery thereof; and b) a fixed mold. And a movable mold, and a set of outer shell molding cavities and inner shell molding cavities are respectively provided at symmetrical portions near both sides of the fixed mold, and these outer shell molding cavities are separated from the inner shell molding cavities. Providing a set of positioning parts at respective positions corresponding to the outer shell molding cavities and the inner shell molding cavities of the moving mold; and c) providing the moving mold and the fixed mold with each other. Close and position the localization parts respectively in the outer shell molding cavity and the inner shell molding cavity, and inject the plastic raw material by the injection device. D) moving the movable mold away from the fixed mold to form an inner shell by introducing the shell into the shell molding cavity, and dwelling and positioning the inner shell in the localization portion as it is. e) rotating the moving mold by 180 degrees so that the inner shell above the localization corresponds to the outer shell molding cavity, and another set of localizations corresponds to the inner shell molding cavity. And, the substrate is placed on the opening of the outer shell molding cavity of the fixed mold,
Associating each piece-shaped material with each outer shell molding cavity and each inner shell, and f) closing the moving mold again with the fixed mold, wherein the inner shell is directly connected to the base material. Pressing, since perforations are provided on the periphery of the flake material, the flake material is pushed out by the pressing of the inner shell, separated from the base material and into the outer shell molding cavity. G) forcing a gap between the inner peripheral surface of the inner shell and the inner peripheral surface of the outer shell molding cavity; and g) injecting plastic material into the outer shell molding cavity and the inner shell by an injection device, respectively. Simultaneously with the interior of the molding cavity to form an outer shell within the gap and simultaneously form another interior shell within the interior shell molding cavity; A step of integrally joining the piece-shaped material and the inner shell, and also integrally joining a lower end edge of the outer shell with the base material in a recess provided along a peripheral edge of the outer shell molding cavity; Separating the mold and the fixed mold, removing the key top product of the letter key from the localization part of the set, and allowing the inner shell to stay and localize in the localization part of another set; i. A) repeating the above steps e) to h);
と内周面との連接部位に多数の突起部を設けて、前記内
シェルを成型完了した後に、前記内シェルの上端面に多
数の凹み溝を形成し、且つ前記外シェルを成型する際
に、プラスチック原料の一部が凹み溝内に流入して多数
の結合部を形成し、これにより前記内シェルと前記外シ
ェルとの結合をより強化させるようにしてなる請求項１
に記載のキー・トップ成型方法。2. A plurality of projections are provided at a connecting portion between a rear end surface and an inner peripheral surface of the inner shell molding cavity, and after the inner shell has been molded, a number of depressions are formed on an upper end surface of the inner shell. When forming the groove and molding the outer shell, a part of the plastic raw material flows into the recessed groove to form a large number of joints, thereby improving the connection between the inner shell and the outer shell. Claim 1 to be strengthened
Key top molding method described in 1.
前記片状素材の文字、図案の部位が透明なカラー印刷で
あり、その他の部分が不透明である請求項１もしくは２
に記載のキー・トップ成型方法。3. The method of claim 1, wherein the inner shell is formed of a transparent material,
3. The character or design portion of the flaky material is a transparent color print, and the other portions are opaque.
Key top molding method described in 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000227228A JP2002052566A (en) | 2000-07-27 | 2000-07-27 | Method for molding key top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000227228A JP2002052566A (en) | 2000-07-27 | 2000-07-27 | Method for molding key top |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002052566A true JP2002052566A (en) | 2002-02-19 |
Family
ID=18720713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000227228A Ceased JP2002052566A (en) | 2000-07-27 | 2000-07-27 | Method for molding key top |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002052566A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1387374B1 (en) * | 2002-08-02 | 2005-10-26 | Polymatech Co., Ltd. | Key pad, resin key top injection mold, and resin key top manufacturing method |
| JP2007216621A (en) * | 2006-02-20 | 2007-08-30 | Yoshida Industry Co Ltd | Manufacturing method of resin molded product |
| JP2007216622A (en) * | 2006-02-20 | 2007-08-30 | Yoshida Industry Co Ltd | Manufacturing method of resin molded product |
| EP2133188A1 (en) * | 2008-06-10 | 2009-12-16 | Samsung Electronics Co., Ltd. | Injection molding apparatus and injection molding method |
| JP2010120206A (en) * | 2008-11-18 | 2010-06-03 | Sony Corp | Molded part, electronic device, and method of producing molded part |
| JP2011011523A (en) * | 2009-07-06 | 2011-01-20 | Sony Corp | Multicolor molding method, multicolor molding apparatus, and multicolor molded part |
| EP2305445A1 (en) * | 2009-09-30 | 2011-04-06 | Hong Fu Jin Precision Industry (ShenZhen) Co. Ltd. | Key and method of manufacturing the same |
| CN112936704A (en) * | 2021-01-29 | 2021-06-11 | 立讯电子科技（昆山）有限公司 | Device and method for integrally forming TWS earphone based on two-color micropore forming technology |
-
2000
- 2000-07-27 JP JP2000227228A patent/JP2002052566A/en not_active Ceased
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1387374B1 (en) * | 2002-08-02 | 2005-10-26 | Polymatech Co., Ltd. | Key pad, resin key top injection mold, and resin key top manufacturing method |
| US7014377B2 (en) | 2002-08-02 | 2006-03-21 | Polymatech Co., Ltd. | Key pad, resin key top injection mold, and resin key top manufacturing method |
| JP2007216621A (en) * | 2006-02-20 | 2007-08-30 | Yoshida Industry Co Ltd | Manufacturing method of resin molded product |
| JP2007216622A (en) * | 2006-02-20 | 2007-08-30 | Yoshida Industry Co Ltd | Manufacturing method of resin molded product |
| EP2133188A1 (en) * | 2008-06-10 | 2009-12-16 | Samsung Electronics Co., Ltd. | Injection molding apparatus and injection molding method |
| JP2010120206A (en) * | 2008-11-18 | 2010-06-03 | Sony Corp | Molded part, electronic device, and method of producing molded part |
| JP2011011523A (en) * | 2009-07-06 | 2011-01-20 | Sony Corp | Multicolor molding method, multicolor molding apparatus, and multicolor molded part |
| EP2305445A1 (en) * | 2009-09-30 | 2011-04-06 | Hong Fu Jin Precision Industry (ShenZhen) Co. Ltd. | Key and method of manufacturing the same |
| CN102034625A (en) * | 2009-09-30 | 2011-04-27 | 鸿富锦精密工业（深圳）有限公司 | Key manufacturing method and key manufactured by same |
| CN112936704A (en) * | 2021-01-29 | 2021-06-11 | 立讯电子科技（昆山）有限公司 | Device and method for integrally forming TWS earphone based on two-color micropore forming technology |
| CN112936704B (en) * | 2021-01-29 | 2023-03-03 | 立讯电子科技（昆山）有限公司 | Device and method for integrally forming TWS earphone based on two-color micropore forming technology |
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