JPS6255588A - Scale plate and manufacture thereof - Google Patents
Scale plate and manufacture thereofInfo
- Publication number
- JPS6255588A JPS6255588A JP19479985A JP19479985A JPS6255588A JP S6255588 A JPS6255588 A JP S6255588A JP 19479985 A JP19479985 A JP 19479985A JP 19479985 A JP19479985 A JP 19479985A JP S6255588 A JPS6255588 A JP S6255588A
- Authority
- JP
- Japan
- Prior art keywords
- scale
- scale plate
- molding
- mold
- surface paper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B19/00—Indicating the time by visual means
- G04B19/06—Dials
- G04B19/12—Selection of materials for dials or graduations markings
-
- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
- G04D3/02—Lathes, with one or more supports; Burnishing machines, with one or more supports
- G04D3/0227—Lathes, with one or more supports; Burnishing machines, with one or more supports for the manufacture of special components for clockworks
- G04D3/0272—Lathes, with one or more supports; Burnishing machines, with one or more supports for the manufacture of special components for clockworks for components of the time-indicating mechanism, e.g. dials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〕
この発明は腕時計の文字板、各種計測器の目盛板等とし
て用いられる、表面に突出目盛部を有し、た合成樹脂製
の目盛板及び該目盛板の製造方法に関するものである。Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a scale plate made of synthetic resin and having a protruding scale portion on its surface, which is used as a dial of a wristwatch, a scale plate of various measuring instruments, etc. The present invention relates to a method for manufacturing the scale plate.
従来、表面に突出目盛を有する目盛板（例えば腕時計用
の文字板）は知られているが、この目盛板である腕時計
用文字板は一般的に金属製のものであって、金罵板の板
面に多数個の目盛金具子を植込んで、板面に突出した目
盛部（時刻表示用の目盛及び文字を含む）を形成してい
るので、目盛金具子の植込み作業に時間がかかり、製造
コストが高くなる欠点があった。Conventionally, scale plates (for example, dial plates for watches) having protruding scales on the surface have been known, but these dial plates for watches are generally made of metal, and are made of metal. Since a large number of scale fittings are embedded in the plate surface to form a protruding scale portion (including time display scales and characters) on the plate surface, it takes time to install the scale fittings. The drawback was that the manufacturing cost was high.
そこで、前記文字板を合成樹脂で一体成形することが考
えられているが、この場合、通常の射出成形では、文字
板として要求されている高精度の平面度を得ることはで
きず、高精度の平面度を確保するためには、例えば第５
図のような金型１゜２を用いて、この金型内に高速・高
圧で溶融樹脂を射出充填させるか、或いは射出−圧縮法
による成形で内部歪みを除去する必要がある。Therefore, it has been considered to integrally mold the dial plate with synthetic resin, but in this case, it is not possible to obtain the high precision flatness required for the dial plate using normal injection molding, and the high precision For example, in order to ensure the flatness of
It is necessary to use a mold 1.degree. 2 as shown in the figure and inject and fill the mold with molten resin at high speed and high pressure, or to remove internal distortion by molding by injection-compression method.
しかしながら、この成形法（射出−圧縮法）による場合
は、金型１，２内の成形圧力が非常に高０ため、可動金
型２を開放して成形品３を外部に取出す時に、この成形
品３が金型２内に強く張付いて型外しを容易に行うこと
ができない。このため、通常は第５図に示すような突出
し装置４により成形品３を突き出して型外しを行うが、
これでは成形品３の表面に傷が付いたり、或いは成形品
自体を変形させる問題があった。However, when using this molding method (injection-compression method), the molding pressure inside the molds 1 and 2 is extremely high, so when the movable mold 2 is opened and the molded product 3 is taken out, this molding The product 3 sticks strongly inside the mold 2 and cannot be easily removed from the mold. For this reason, the molded product 3 is usually ejected from the mold by using an ejector 4 as shown in FIG.
This has the problem of damaging the surface of the molded product 3 or deforming the molded product itself.
本発明は前記のような問題点を解決するためになされた
もので、その第１の目的は表面に従来の金具子植込みに
匹斂するような体裁のよい突出目盛部を有するコストの
安い合成樹脂製の目盛板を提供することにあり、また第
２の目的は表面に突出目盛部を有した平面精度の高い目
盛板を、通常の射出成形によって簡単に成形することが
でき、また成形時における型外しく成形品の取出し）が
容易に行なえ、表面に傷が付く問題を解消することがで
きる目盛板の製造方法を提供することにある。The present invention was made in order to solve the above-mentioned problems, and its first purpose is to provide a low-cost composite material having a good-looking protruding scale portion on the surface that is comparable to conventional metal fittings. The second purpose is to provide a scale plate made of resin, and the second purpose is to easily mold a scale plate with high planar accuracy with a protruding scale portion on the surface by normal injection molding, and It is an object of the present invention to provide a method for manufacturing a scale plate, which allows easy removal of the molded product from the mold and eliminates the problem of scratches on the surface.
（発明の概要）
本発明は前記の第１目的を達成するために、腕時計の文
字板等として用いられる目盛板を、所定の目盛板形状に
形成された厚さの薄い表層紙と、この表層紙の裏面に射
出成形によって一体的に接合された合成樹脂製のベース
とで構成し、且つこの目盛板の目盛部をベース成形時の
樹脂射出圧によって金型目盛窪部内に膨出される表層紙
の膨出突起で形成したことを特徴とする。(Summary of the Invention) In order to achieve the above-mentioned first object, the present invention provides a scale plate used as a dial of a wristwatch, etc., using a thin surface paper formed in a predetermined shape of the scale plate, and a surface layer of this surface paper. A surface paper consisting of a synthetic resin base that is integrally joined to the back side of the paper by injection molding, and the scale part of this scale plate is bulged into the mold scale recess by the resin injection pressure during base molding. It is characterized by being formed with a bulging protrusion.
また、前記第２の目的を達成する目盛板製造方法は、所
定の目盛板形状に形成された厚さの薄い表層紙を射出成
形機の金型内にインサートし、この表層紙インサート金
型内に溶融樹脂を射出してベースを一体成形する場合に
、このベース成形時の樹脂射出圧によって表層紙の目盛
対応部分を金型目盛窪部内に膨出させることにより、表
面に表層紙膨出突起で形成された突出目盛部を有する目
盛板を（ｑることを特徴とするものである。In addition, the scale plate manufacturing method for achieving the second objective involves inserting a thin surface paper formed into a predetermined scale plate shape into a mold of an injection molding machine, and inserting the surface paper into the mold. When integrally molding the base by injecting molten resin into the base, the resin injection pressure during base molding causes the scale corresponding portions of the surface paper to bulge into the mold scale recesses, creating surface paper bulge protrusions on the surface. It is characterized by having a scale plate having a protruding scale part formed by (q).
以下、本発明の実ｔＩＡ例を第１図乃至第３図の図面に
従い説明する。この実施例は腕時計用文字板としての適
用例を示すもので、この文字板である目盛板７は所定の
目盛板形状に形成された厚さの薄い例えば厚さ０．１．
以下の表層紙５と、この表層紙５の裏面に射出成形によ
って一体的に接合された合成樹脂製のベース６とからな
り、この目盛板７の表面にはベース成形時の樹脂割出圧
によって金型目盛窪部１２ａ内に第３図の如く膨出され
る表層紙５の膨出突起で形成した突出目盛部５ａが設け
られている。Hereinafter, an actual tIA example of the present invention will be explained with reference to the drawings of FIGS. 1 to 3. This embodiment shows an example of application as a dial for a wristwatch, and the dial plate 7 is formed in a predetermined dial shape and has a thin thickness, for example, 0.1 mm.
It consists of the following surface paper 5 and a synthetic resin base 6 integrally joined to the back surface of this surface paper 5 by injection molding, and the surface of this scale plate 7 is As shown in FIG. 3, a protruding scale part 5a formed by a protrusion of the surface paper 5 is provided in the mold scale recessed part 12a.
なお、この突出目盛部５ａは本実施例の場合、時刻表示
目盛として図示しているが、時刻文字であってもよい。Although the protruding scale portion 5a is illustrated as a time display scale in this embodiment, it may be a time display scale.
また、前記実施例では時計文字板の場合について述べた
が、本発明はこれに限られることなく、各種計測器の目
盛板等として適用することも可能である。Moreover, although the case of a clock dial was described in the above embodiment, the present invention is not limited thereto, and can also be applied as a scale plate of various measuring instruments.
次に、前記目盛板７の製造方法について説明すると、こ
の製造方法は所定の目盛板形状に形成された厚さの簿い
表層紙５を躬出成形懺の金型１１゜１２内に第３図の如
くインサートし、この表、１紙インサート金型１１．１
２内に溶融樹脂６ａを射出してベース６を一体成形する
場合に、このベース成形時の樹脂射出圧によって表層紙
５の目盛対応部分を金型目盛窪部１２ａ内に第３図の如
く膨出させることにより、表面に表層紙膨出突起で形成
された突出目盛部５ａを有する目盛板７を得ることを特
徴とするもので、成形を終えた目盛板７（成形品）は開
放金型１１．１２間に真空吸引式の吸盤８を備えた成形
品取出装置９を第４図の如く進入させて吸着することに
より、開放金型１１．１２間から機外に取出される。Next, a method for manufacturing the scale plate 7 will be explained. This manufacturing method involves placing a surface paper 5 of a certain thickness and having a predetermined shape in the mold 11 and 12 of an extrusion molding plate. Insert as shown in this table, 1 paper insert mold 11.1
When the base 6 is integrally molded by injecting the molten resin 6a into the mold 2, the part of the surface paper 5 corresponding to the scale is expanded into the mold scale recess 12a as shown in FIG. 3 due to the resin injection pressure during base molding. This is characterized by obtaining a scale plate 7 having a protruding scale part 5a formed by surface paper bulging protrusions on the surface by making the scale plate 7 come out.After molding, the scale plate 7 (molded product) is placed in an open mold. A molded product removal device 9 equipped with a vacuum suction type suction cup 8 is inserted between the open molds 11 and 12 as shown in FIG.
〔発明の効果〕
本発明の目盛板製造方法は前述したように、厚さの薄い
表層紙５を金型１１．１２内にインサートして射出成形
を行うため、表層紙インサート側金型１２の内面に射出
合成樹脂６ａが強固に張付くことがなく、このため成形
目盛板７の離型が容易になり、第４図に示すような吸引
吸着でもって簡単に取出すことができる。従って、第５
図に示すような突出し装置４による型外しを行う必要が
ないので、成形目盛板７の表面に突出し傷ができるとい
う問題を解消することができる。しかも、成形金型１１
゜１２内にインサートされた表層紙５は、その一部分く
目盛対応部分）がベース成形時の樹脂射出圧によって金
型目盛窪部１２ａ内に膨出されるので、表面に突出目盛
部５ａを有した平面精度の高い目盛板７を、通常の射出
成形によって簡単に成形することができる。[Effects of the Invention] As described above, the scale plate manufacturing method of the present invention performs injection molding by inserting the thin surface paper 5 into the mold 11.12. The injection synthetic resin 6a does not stick firmly to the inner surface, so that the molded scale plate 7 can be easily released from the mold, and can be easily taken out by suction and suction as shown in FIG. Therefore, the fifth
Since there is no need to perform mold removal using the ejector 4 as shown in the figure, the problem of protrusion scratches on the surface of the molding scale plate 7 can be solved. Moreover, the molding die 11
A part of the surface paper 5 inserted into the mold 12 (corresponding to the scale) is bulged into the mold scale recess 12a by the resin injection pressure during base molding, so it has a protruding scale 5a on its surface. The scale plate 7 with high plane accuracy can be easily molded by ordinary injection molding.
一方、前記方法によって得られた本発明の目盛板７は、
表面に従来の金具子植込みに匹敵するような体裁のよい
突出目盛部５ａを有するものとなり、コストの安い合成
樹脂製の目盛板でありながら、高級感を出すことができ
る。また、この目盛板７の構成要素である表層紙５と合
成樹脂製のベース６はインサート成形によって完全に一
体化するため、剥睡の問題も生じない。On the other hand, the scale plate 7 of the present invention obtained by the above method is
It has a protruding scale part 5a on its surface that has a good appearance comparable to that of a conventional metal fitting, and it can give a high-class feel even though it is a scale plate made of a synthetic resin that is inexpensive. Further, since the surface paper 5 and the base 6 made of synthetic resin, which are the constituent elements of the scale plate 7, are completely integrated by insert molding, there is no problem of falling asleep.
第１図は本発明の目盛板を腕時計用文字板として示した
平面図、第２図はその中央縦断面図、第３図は本発明の
目盛板製造方法を成形時の状態で示した説明図、第４図
は成形品である目盛板を真空吸引式の成形品取出ｇｉ置
で取出す状態を示した説明図、第５図は従来の目盛板の
成形方法を示す説明図である。
５・・・表層紙、５ａ・・・突出目盛部、６・・・合成
樹脂製のベース、７・・・目盛板、１１．１２・・・射
出成形機の成形金型、１２ａ・・・金型目盛窪部。Fig. 1 is a plan view showing the scale plate of the present invention as a wristwatch dial, Fig. 2 is a central vertical sectional view thereof, and Fig. 3 is an explanation showing the scale plate manufacturing method of the present invention in the state at the time of molding. 4 are explanatory diagrams showing a state in which a scale plate, which is a molded product, is taken out using a vacuum suction type molded product removal device, and FIG. 5 is an explanatory diagram showing a conventional method for molding a scale plate. 5... Surface paper, 5a... Protruding scale portion, 6... Base made of synthetic resin, 7... Scale plate, 11.12... Molding mold of injection molding machine, 12a... Mold scale recess.
Claims (2)
て、所定の目盛板形状に形成された厚さの薄い表層紙と
、この表層紙の裏面に射出成形によって一体的に接合さ
れた合成樹脂製のベースとからなり、この目盛板の目盛
部がベース成形時の樹脂射出圧によって金型目盛窪部内
に膨出される表層紙の膨出突起で形成されていることを
特徴とする目盛板。(1) A scale plate used as the dial of a wristwatch, etc., consisting of a thin surface paper formed into a predetermined scale plate shape and a synthetic material integrally joined to the back side of the surface paper by injection molding. A scale plate comprising a base made of resin, and the scale part of the scale plate is formed of bulging protrusions of surface paper that bulges into the mold scale recesses by the resin injection pressure during base molding. .
を射出成形機の金型内にインサートし、この表層紙イン
サート金型内に溶融樹脂を射出してベースを一体成形す
る場合に、このベース成形時の樹脂射出圧によって表層
紙の目盛対応部分を金型目盛窪部内に膨出させることに
より、表面に表層紙膨出突起で形成された突出目盛部を
有する目盛板を得ることを特徴とする目盛板の製造方法
。(2) When inserting a thin surface paper formed into a predetermined dial shape into the mold of an injection molding machine, and injecting molten resin into the surface paper insert mold to integrally mold the base. Then, the scale corresponding portion of the surface paper is bulged into the scale recess of the mold by the resin injection pressure during base molding, thereby obtaining a scale plate having a protruding scale portion formed by the surface paper bulging projections on the surface. A method for manufacturing a scale plate characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19479985A JPS6255588A (en) | 1985-09-05 | 1985-09-05 | Scale plate and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19479985A JPS6255588A (en) | 1985-09-05 | 1985-09-05 | Scale plate and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6255588A true JPS6255588A (en) | 1987-03-11 |
Family
ID=16330450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19479985A Pending JPS6255588A (en) | 1985-09-05 | 1985-09-05 | Scale plate and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6255588A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5996372A (en) * | 1997-06-24 | 1999-12-07 | Mitsubishi Denki Kabushiki Kaisha | Accumulator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5353359A (en) * | 1976-10-25 | 1978-05-15 | Hamasawa Kogyo Kk | Clockface |
| JPS5515888A (en) * | 1978-07-22 | 1980-02-04 | Ryuji Uematsu | Method of forming pattern of decorative material used in synthetic resin product |
-
1985
- 1985-09-05 JP JP19479985A patent/JPS6255588A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5353359A (en) * | 1976-10-25 | 1978-05-15 | Hamasawa Kogyo Kk | Clockface |
| JPS5515888A (en) * | 1978-07-22 | 1980-02-04 | Ryuji Uematsu | Method of forming pattern of decorative material used in synthetic resin product |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5996372A (en) * | 1997-06-24 | 1999-12-07 | Mitsubishi Denki Kabushiki Kaisha | Accumulator |
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