JPS604014A - Manufacture of wrist watch case - Google Patents

Manufacture of wrist watch case

Info

Publication number
JPS604014A
JPS604014A JP11353583A JP11353583A JPS604014A JP S604014 A JPS604014 A JP S604014A JP 11353583 A JP11353583 A JP 11353583A JP 11353583 A JP11353583 A JP 11353583A JP S604014 A JPS604014 A JP S604014A
Authority
JP
Japan
Prior art keywords
electroformed
mold
gold
finished
injection
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
JP11353583A
Other languages
Japanese (ja)
Other versions
JPH0231836B2 (en
Inventor
Yasuhiro Kitagishi
北岸 康博
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP11353583A priority Critical patent/JPS604014A/en
Publication of JPS604014A publication Critical patent/JPS604014A/en
Publication of JPH0231836B2 publication Critical patent/JPH0231836B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00Cases
    • G04B37/22Materials or processes of manufacturing pocket watch or wrist watch cases

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain a gold-plated case excellent in quality by less processes by a method wherein the middle with back of a watch case is electroformed by a combination of nickel, copper or alloy gold, and the middle with back is inserted into an injection mold for injection molding. CONSTITUTION:A plastic electroformed matrix 4 transferred from a surface- finished electroforming master model is processed by injection molding, compression molding, etc. A conductive cover 5 is provided by vacuum deposition, electroless plating, etc. Then, a metal such as nickel, copper, gold or silver is electrodeposited by electroforming. In manufacturing an electroformed middle with back 1, an electroformed piece is used as a secondary electroforming master 7 to conduct a thick plating 7a and to apply releasing lubricant 7b then to be mounted on a glass plate 8. Then, the gap between a glass ring 9 and the glass plate 8 is sealed by clay 10 and heat resistant resin is poured inside the glass ring 9, hardened and finished. The finished piece is incorporated into an injection cavity 12 and an insert mold to complete a mold.

Description

【発明の詳細な説明】 この発明は、腕時計側の胴の゛特に胴の外面を金kA 
、内iTaをプラスチックでできた殻化ケースの製造方
法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized in that the outer surface of the body of the wristwatch, especially the outer surface of the body, is made of gold.
The present invention relates to a method of manufacturing a shell case made of plastic.

従来の殻化ケースは、金属殻を絞り加工又は、ロー付加
工によって、製作されていたが、この方法では、インサ
ートインジェクシロン成形時に該殻と、インジェクショ
ンキャビティ形状が製造上寸法をピッタリ合わせること
が不可能であり、インサート成形時に成形圧力により該
殻の形状が部分的に変形するため、後工程で研摩研削等
の表面仕上げを行なわなければならず、下記の欠点があ
る。
Conventional shelled cases have been manufactured by drawing or brazing a metal shell, but with this method, the dimensions of the shell and injection cavity can be precisely matched during insert injection molding. However, since the shape of the shell is partially deformed by the molding pressure during insert molding, surface finishing such as abrasive grinding must be performed in a subsequent process, which has the following disadvantages.

(1) 後工程の研摩研削による発熱で殻と゛プラスチ
ックの間に微細なスキマが発生し、殻とプラスチック製
内胴の密着性が悪くなる。
(1) The heat generated by the abrasive grinding process in the post-process creates a minute gap between the shell and the plastic, which deteriorates the adhesion between the shell and the plastic inner shell.

(2)金メッキ等、メッキ仕上げが必要とする胴の場合
(1)で発生するスキマにメッキ液が入り込み、後に完
全な除去が不可能であるため耐食性が非常に悪くなる。
(2) In the case of a shell that requires a plating finish such as gold plating, the plating solution enters the gap created in (1) and cannot be completely removed afterwards, resulting in very poor corrosion resistance.

本発明は上記の欠点を除去するためになされたものであ
り、工程を削減し、インジェクションキャビティの金型
コストを下げ、品質の良い金メツキケースを提供すると
同時に、仕上げ外観の良いものを得るための製造方法で
ある。
The present invention was made in order to eliminate the above-mentioned drawbacks, and to reduce the number of steps, reduce the cost of injection cavity molds, provide a high-quality gold-plated case, and at the same time obtain a good finished appearance. This is the manufacturing method.

以下図面に示す実施例によって本発明を詳述する。The present invention will be explained in detail below with reference to embodiments shown in the drawings.

第1図は本発明の方法により製造された時計側を示すも
ので、1は表面に時計側として必要な外観仕様を有し電
鋳加工による複雑でしかも高品質の模一様を有する電鋳
殻であり、内側をグラスチック内胴2で構成されている
Figure 1 shows a watch side manufactured by the method of the present invention. 1 is an electroformed watch side that has the appearance specifications required for a watch side on the surface and has a complicated and high quality pattern by electroforming. It is a shell, and the inside is made up of a plastic inner shell 2.

上記した時計側を製造するには、第2図に示す様にまず
希望のデザインで表面仕上げした電鋳用マスターから忠
実に転写されたプラスチック製電鋳母型4を公知のプラ
スチック成形法、例えば射出成形、圧縮成形等により加
工する。次にプラスチック製電鋳母型4の表面に導電性
を与えるために真空蒸着あるいは無電解メッキ法等によ
り導電性被膜5を形成し、次いでニッケル、銅、金、銀
などのメッキ可能な金属を電鋳法により電着し、電鋳殻
1を形成する。次にインサート成形金型のインジェクシ
ョンキャビティ12の製作であるかにおいて、マスク6
をセットしないで電鋳した令のを2次電鋳マスター7と
し、2次電鋳マスターの表面に厚メッキ7αを施こし、
lIi形剤7bを塗布した後ガラス板8に乗せる。次に
ガラスリング9とガラス板8とのスキマを粘i10でシ
ーリングした後、耐熱樹脂又は金属粉末含有耐熱樹脂1
1を流し込み硬化させ、後加工したものをインジェクシ
ョンキャビティ12としインサート成形金型に組込んで
金型を完成させる。2次マスター7への厚メッキは電鋳
殻1とインジェクションキャビティ12にクリアランス
を設うけるためでクリアランス量は時計側形状によって
も違うが5μ〜1000μ程度が良い。またインジェク
ションキャビティ12の素材となる耐熱樹脂は金属粉末
が入っているほうが強度が大きく重量で約80%程度金
属粉末が含有していたほうが強度的に強い。また金属粉
末には、アルミ、鉄、銅、ニッケル 町、ステーンレス
等の金属粉末やアル、ミナ等の無機質の粉末を含有した
物が良い。次に電鋳殻1を切削・プレス抜き加工等によ
ってガラス挿入部、ボタン穴部等後加工した後、ニッケ
ル、金、ロジウム、クロム等の貴金属から成る仕上げメ
ッキ層を被覆してインサート成形金型にセットし射出成
形を行い時計側を完成させる。
In order to manufacture the above-mentioned watch side, first, as shown in Fig. 2, a plastic electroforming master mold 4, which is faithfully transferred from an electroforming master whose surface has been finished with the desired design, is molded using a known plastic molding method, for example. Processed by injection molding, compression molding, etc. Next, a conductive coating 5 is formed on the surface of the plastic electroforming mold 4 by vacuum evaporation or electroless plating to give conductivity, and then a plateable metal such as nickel, copper, gold, or silver is applied. The electroformed shell 1 is formed by electrodeposition by electroforming. Next, when manufacturing the injection cavity 12 of the insert mold, the mask 6 is
The second electroformed master 7 was electroformed without setting, and a thick plating 7α was applied to the surface of the secondary electroformed master.
After applying the lIi formulation 7b, it is placed on a glass plate 8. Next, after sealing the gap between the glass ring 9 and the glass plate 8 with adhesive i10, heat-resistant resin or metal powder-containing heat-resistant resin 1
1 is poured and hardened, and the post-processed material is incorporated into an insert molding mold to form an injection cavity 12 to complete the mold. The thick plating on the secondary master 7 is to provide a clearance between the electroformed shell 1 and the injection cavity 12, and the amount of clearance varies depending on the shape of the watch side, but is preferably about 5μ to 1000μ. Furthermore, the heat-resistant resin that is the material of the injection cavity 12 has greater strength when it contains metal powder, and is stronger when it contains about 80% by weight of metal powder. The metal powder preferably contains metal powders such as aluminum, iron, copper, nickel powder, stainless steel, etc., and inorganic powders such as aluminium, mina, etc. Next, the electroformed shell 1 is subjected to post-processing such as the glass insertion part and the buttonhole part by cutting, press punching, etc., and then coated with a finishing plating layer made of precious metals such as nickel, gold, rhodium, and chromium, and then molded into an insert molding mold. The watch side is completed by injection molding.

本発明の方法は、上記の様に電鋳殻をもとに、インサー
ト成形金型のインジェクションキャビティを耐熱樹脂ま
たは金属粉末含有耐熱樹脂で作製しているため、電鋳殻
とインジェクションキャビティの間にスキマがないため
、射出成形時の圧力により殻の変形がなく、射出成形後
、仕上げ加工する必要がなくなるため仕上げメッキをイ
ンサート射出成形前にすることが出来ることにより−〔
金色等のメッキ仕上げの殻化ケースが製造可能となる。
In the method of the present invention, the injection cavity of the insert molding mold is made of heat-resistant resin or heat-resistant resin containing metal powder based on the electroformed shell as described above, so that there is no space between the electroformed shell and the injection cavity. Since there is no gap, there is no deformation of the shell due to the pressure during injection molding, and there is no need for finishing processing after injection molding, so finish plating can be done before insert injection molding.
It becomes possible to manufacture shelled cases with a gold-plated finish.

又、外観形状が自由に表現できるためデザインの多様化
が計られ通常の機械加工法では量産が非常に難かしい複
雑でしかも高品質の模様を有する時計側を大量に生産す
ることが出来る。更に表面模様は高品質に仕上げたマス
ターから正確に複製されるため最終工程において研摩別
布などの仕上げは全く不要であり加工能率が向上するな
どその効果は大きい。
In addition, since the external shape can be expressed freely, designs can be diversified, and watch sides with complex and high-quality patterns that are extremely difficult to mass-produce using normal machining methods can be mass-produced. Furthermore, since the surface pattern is accurately reproduced from a high-quality finished master, there is no need for finishing such as abrasive cloth in the final process, which has great effects such as improved processing efficiency.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の方法で製造された時計側の断面図、第
2図は本発明の製造工程において電鋳殻の製造の断面図
、第3図は本発明のインジスクシ6フキヤビテイの、製
造の断面図、第4図はインサート成形時の金型の断面図
である。 1・・・・・・電鋳殻 2°°°°°°プラスチツク内胴 3・・・・・・ガラス 4・・・・・・グラスチック製電鋳母型5・・・・・・
導電膜 6・・・・・・マスク 7・・・・・・2次電鋳マスター 7α・・・厚メッキ層 7b・・・離形材塗布層 8・・・・・・ガラス板 9・・・・・・ガラスリング 10・・・・・・粘 度 11・・・・・・耐熱樹脂又は金属粉末含有耐熱樹脂1
2・・・・・・インジエクシ冒ンキャビテイ13・・・
・・・インサート成形金型 以 上 出願人 株式会社第二精工舎
Fig. 1 is a cross-sectional view of the watch side manufactured by the method of the present invention, Fig. 2 is a cross-sectional view of the electroformed shell manufactured in the manufacturing process of the present invention, and Fig. 3 is a cross-sectional view of the manufacturing process of the indisc 6 facility of the present invention. FIG. 4 is a cross-sectional view of the mold during insert molding. 1... Electroformed shell 2°°°°° Plastic inner shell 3... Glass 4... Glass electroformed mother mold 5...
Conductive film 6...Mask 7...Secondary electroforming master 7α...Thick plating layer 7b...Release material coating layer 8...Glass plate 9... ...Glass ring 10 ... Viscosity 11 ... Heat-resistant resin or heat-resistant resin containing metal powder 1
2... Inji Exi Expansion Cavity 13...
...Insert molds and above Applicant Daini Seikosha Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] (1) 腕時計側の胴の製造方法において、前記用の外
面を構成する胴の殻をニッケル、銅、又(ま金合金等の
1種類又は2種類以上の組合せの電鋳で製作し射出成形
金型の中に前出胴殻をインサートし方法。
(1) In the method for manufacturing the body of a wristwatch, the shell of the body constituting the outer surface of the body is produced by electroforming of one or a combination of two or more of nickel, copper, or a metal alloy, and then injection molded. Method of inserting the protruding body shell into the mold.
(2) 前記射出成形金型のキャビティ形状の一部又は
全部を耐熱樹脂又は金属粉末含有の耐熱樹脂で構成され
たことを特徴とする特許請求の範囲第1項記載の腕時計
側の製造方法。
(2) The method for manufacturing a wristwatch according to claim 1, wherein a part or all of the cavity shape of the injection mold is made of a heat-resistant resin or a heat-resistant resin containing metal powder.
JP11353583A 1983-06-23 1983-06-23 Manufacture of wrist watch case Granted JPS604014A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11353583A JPS604014A (en) 1983-06-23 1983-06-23 Manufacture of wrist watch case

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11353583A JPS604014A (en) 1983-06-23 1983-06-23 Manufacture of wrist watch case

Publications (2)

Publication Number Publication Date
JPS604014A true JPS604014A (en) 1985-01-10
JPH0231836B2 JPH0231836B2 (en) 1990-07-17

Family

ID=14614781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11353583A Granted JPS604014A (en) 1983-06-23 1983-06-23 Manufacture of wrist watch case

Country Status (1)

Country Link
JP (1) JPS604014A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5352158A (en) * 1976-10-22 1978-05-12 Seiko Instr & Electronics Ltd Case for wristwatch and its production

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5352158A (en) * 1976-10-22 1978-05-12 Seiko Instr & Electronics Ltd Case for wristwatch and its production

Also Published As

Publication number Publication date
JPH0231836B2 (en) 1990-07-17

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