JPS60128281A - Production of domed screen-like outside blade for electric razor - Google Patents

Abstract

PURPOSE:To obtain a screen-like outside blade having good quality and to improve durability of a die by forming a primary electrodeposit layer by using a watts bath contg. no additive on the surface of a matrix, forming a secondary electrodeposition layer after a stripping treatment and stripping said layer. CONSTITUTION:An electric insulating film 7 having the pattern corresponding to the hair introducing holes 2 of a screen-like outside blade 1 is formed on the surface of a matrix 4 consisting of an Al material, etc. The matrix 4 is transferred into a lusterless watts bath and is electrodeposited primarily with Ni, etc. thereon by which an arc- shaped primary electrodeposition layer 8 projecting beyond the thickness of the film 7 is formed. The matrix 4 is then formed to a dome shape by bending or drawing. Such matrix is immersed in a selenious acid liquid, etc. so that the surface of the layer 8 is subjected to a stripping treatment. The matrix 4 is transferred into an electroforming bath contg. a brightener and is subjected to secondary electrodeposition of Ni, etc. by which a secondary electrodeposition layer 9 to be used as a continuous rib 3 between the holes 2 and 2 of the blade 1 is formed. Finally the layer 9 is stripped from the layer 8 and the domed screen-like outside blade 1 having the holes 2 and the continuous ribs 3 formed with counter sinks 3a is obtd.

Description

【発明の詳細な説明】 〔技術分野〕 この発明は電気かみそりのドーム形の網目状外刃を電鋳
法によって製造する方法に関する。すなわち、第１図は
本発明方法により得られるドーム形状の網目状外刃を示
しており、この外刃１は多数の毛導入孔２と２毛導入孔
２・２間に形成される連続リブ３とを有し、連続リブ３
の下面にカウンターシンク３ａが形成されたものである
。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method of manufacturing a dome-shaped mesh outer cutter of an electric shaver by electroforming. That is, FIG. 1 shows a dome-shaped mesh outer cutter obtained by the method of the present invention, and this outer cutter 1 has a large number of hair introduction holes 2 and a continuous rib formed between two hair introduction holes 2. 3 and a continuous rib 3
A counter sink 3a is formed on the lower surface of the sink.

〔背景技術〕[Background technology]

この種の網目状外刃を電鋳法により得るには。 How to obtain this type of mesh outer cutter by electroforming.

母型に所望パターンの電気絶縁膜（レジスト）を施し２
次いで一次電着を行い、−次電着層の上に剥離処理を施
したのち二次電着か行われる。しかし、−次電着を行う
前工程の電気絶縁膜形成の直後に母型をドーム形状に曲
げ、あるいは絞り等で成形加工すると電気絶縁膜か剥離
し、また傷を受けたり、ピンポールを発生し、−次・二
次電着層の形成に悪影響を及ぼし、良質の外刃の製品が
得難い。Apply an electrical insulating film (resist) in the desired pattern to the matrix 2
Next, primary electrodeposition is performed, and after a peeling treatment is performed on the secondary electrodeposition layer, secondary electrodeposition is performed. However, if the matrix is bent into a dome shape or formed by drawing, etc. immediately after forming the electrical insulating film in the pre-electrodeposition process, the electrical insulating film may peel off, be scratched, or cause pinholes. , -It has an adverse effect on the formation of the secondary and secondary electrodeposited layers, making it difficult to obtain a product with a high quality outer blade.

そのために、−次電着を行ったのらに母型をドーム形状
に成形加工する方法が特開昭５８−１５８８２号公報に
提案されている。この方法によれば、母型のドーム成形
前の状態において母型表面に対し電気絶縁膜が一次電着
層によって押えつけられているため、母型のドーム成形
に際し一次電着層は電気絶縁膜を押えながら曲げられ、
従って電気絶縁膜の剥離、損傷等をよく防止できる。し
かし、従来では一次電着と二次電着とが共に同一のニッ
ケル浴で行われ、しかも添加剤、つまり光沢剤の入った
光沢浴であった。そのため、−吹型着層の硬度か過剰に
アップして靭性、伸びに欠け。To this end, Japanese Patent Application Laid-Open No. 15882/1983 proposes a method in which a matrix is formed into a dome shape after secondary electrodeposition. According to this method, the electrically insulating film is pressed against the surface of the matrix by the primary electrodeposited layer before the dome is formed on the matrix. bent while holding down,
Therefore, peeling, damage, etc. of the electrical insulating film can be well prevented. However, in the past, both the primary electrodeposition and the secondary electrodeposition were carried out in the same nickel bath, and moreover, the brightening bath contained an additive, that is, a brightening agent. As a result, the hardness of the blow molding layer increases excessively, resulting in a lack of toughness and elongation.

−次組着後の金型による母型の曲げ、絞り加工時に一次
電着層にクラックが発生し、これが二次電着層の形成に
悪い影響を与えていた。また、成形用金型か早期に摩耗
、損傷するといった問題があった。-Cracks occurred in the primary electrodeposition layer during bending and drawing of the mother die using a mold after the next assembly, which had a negative effect on the formation of the secondary electrodeposition layer. In addition, there was a problem that the mold for molding was prematurely worn out and damaged.

〔発明の概要および目的〕[Summary and purpose of the invention]

そこで、この発明は、−次組着後に母、型をドーム形状
に成形加工する外刃の製造方法において。Therefore, the present invention provides a method for manufacturing an outer cutter, in which a master mold is formed into a dome shape after the next assembly.

ニッケル浴のなかでも特に電着物の靭性、伸びに優れオ
こワット浴を使用し、しかも添加物を含まぬワット浴で
一次電着を行い、以て一次電着後の曲げ１絞り加工時の
一次電着層のクラック発生を皆無にして良質の外刃を得
ることを第１の目的とする。そして、成形用金型の耐久
性の向上を図ることを第２の目的とするものである。Among the nickel baths, we use the Okowatt bath, which has excellent toughness and elongation of the electrodeposited material, and we perform the primary electrodeposition in the Watt bath, which does not contain additives. The first objective is to obtain a high quality outer cutter with no cracking in the primary electrodeposited layer. A second purpose is to improve the durability of the mold.

通常のワット浴による電着物は、ヒ・７力−ス硬度で１
００〜２５０．伸び（％、５ｃｍ）か１０〜３５の値を
示すが、これに添加剤が入るとヒノカース硬度で３００
〜６５０とかたさか３倍程度になることが知られており
、この点で本発明方法では添加剤、主に光沢剤を含まな
い無光沢面とするものである。因に５−次電鋳後に絞り
加工を行う製法においては銅電鋳も自効であるか、銅電
鋳の場合は密着性を向上させるためにストライクメッキ
を行う必要があるところ、ごのストライクメッキの浴組
成中にシアン化カリ　（青酸カリ）あるいはシアン化す
トリウみを含むため公害の問題が出る。また、ニッケル
浴のなかでもスルファミノ酸浴による電鋳物はビッカー
ス硬度で２００〜５５０、伸び（％、５ｃｍ）で６〜３
０、スルファミン酸塩化物浴による電鋳物は同じ硬度で
２００〜６２５、伸びで３〜５であり、伸びが悪くて前
述のクラックが発生し、その他の塩化物浴、硬ニ・ノケ
ル浴、はうふつ化物浴も同じように好ましくなく。The electrodeposited material produced by a normal Watt bath is 1 on the H-7 hardness scale.
00-250. The elongation (%, 5cm) shows a value of 10 to 35, but if additives are added to this, the hardness increases to 300
It is known that the hardness is about three times as high as 650, and in this respect, the method of the present invention provides a matte surface that does not contain additives, mainly brighteners. Incidentally, copper electroforming is also effective in manufacturing methods that involve drawing after the 5th electroforming, or in the case of copper electroforming, it is necessary to perform strike plating to improve adhesion. Pollution problems arise because the plating bath composition contains potassium cyanide (potassium cyanide) or cyanide salts. In addition, among nickel baths, electroformed products made using a sulfamino acid bath have a Vickers hardness of 200 to 550 and an elongation (%, 5 cm) of 6 to 3.
0, the electroformed products made with sulfamic acid chloride baths have the same hardness of 200 to 625 and elongation of 3 to 5, and the elongation is poor and the above-mentioned cracks occur. Bathing in turmeric is similarly undesirable.

これがワット浴にした理由である。更に、ワ・ノド浴に
通常台まれている塩化ニッケルはこれを入れると電着物
の靭性が劣ることになるので、塩化ニアケルを含まない
ことが望まれる。This is the reason why I chose a watt bath. Furthermore, it is desirable that nickel chloride, which is normally included in the Wa-no-do bath, is not included, since if it is added, the toughness of the electrodeposited material will be deteriorated.

母型としてはア月ベニウム又はアルミニウム合金のいわ
ゆるアルミ母型や銅厚型などが用いられる。但し、アル
ミ母型の場合は密着力の強い電Ｕｆを確保するためにジ
ンケート法（亜鉛置換法）などで前処理をしておくこと
が望まれる。As the mother mold, a so-called aluminum mother mold made of aluminum or aluminum alloy, a thick copper mold, or the like is used. However, in the case of an aluminum matrix, it is desirable to pre-treat it by a zincate method (zinc substitution method) or the like in order to ensure strong adhesion.

〔実施例Ｉ〕[Example I]

まず、第２図（ａ）に示すごとく平板状のアルミ母型４
の表面に紫外線硬化性樹脂５を均一に塗布し。First, as shown in Fig. 2(a), a flat aluminum matrix 4
The ultraviolet curable resin 5 is uniformly applied to the surface.

ついで第２図（ｂ）に示すごとく硬化性樹脂５の上にシ
ャドウマスク６をのせて焼付、ＴＡ像の各処理を施し、
第２図（Ｃ１に示すごとく網目状外刃１の毛導入孔２に
相当するパターンの硬化性樹脂５による電気絶縁膜７を
形成した。Next, as shown in FIG. 2(b), a shadow mask 6 is placed on the curable resin 5 and baked, and TA image processing is performed.
As shown in FIG. 2 (C1), an electrical insulating film 7 of curable resin 5 was formed in a pattern corresponding to the hair introduction holes 2 of the mesh-like outer cutter 1.

ついで、酸洗い（容積比ｌ：Ｉ硝酸水溶液）をしたのち
、アルミ母型４を下記組成の処理液でジンケート処理を
施した。After pickling (volume ratio 1:I nitric acid aqueous solution), the aluminum matrix 4 was subjected to zincate treatment with a treatment solution having the following composition.

ジンケート処理液組成（ｇ／６） 水酸化ナトリウム　５０ 酸化亜鉛　５ ０ソシエル塩　５０ 塩化第二鉄　２ 硝酸ナトリウム　１ ついで、母、型４を無光沢のワット浴に移し、ニッケル
の一次電着を行って、第２図（ｄ）に示すごとく母型４
の電気絶縁膜７によって覆われていない表面上に、電気
絶縁膜７の厚さを越えて突出する。Zincate treatment solution composition (g/6) Sodium hydroxide 50 Zinc oxide 50 Socier's salt 50 Ferric chloride 2 Sodium nitrate 1 Next, the mother mold 4 was transferred to a matte Watt bath, and primary electrodeposition of nickel was performed. Then, as shown in Fig. 2(d), the matrix 4 is
protrudes beyond the thickness of the electrically insulating film 7 on the surface not covered by the electrically insulating film 7 .

例えば断面がほぼ円弧状の一次電着層８を形成した。こ
のときのワット浴の組成は下記の通りとし。For example, a primary electrodeposited layer 8 having a substantially arcuate cross section was formed. The composition of the Watt bath at this time is as follows.

Ｐ　Ｈ３，０〜４．０．温度６０〜７０°Ｃ１電流密度
３〜６　Ａ　／　ｄ　ｍの作業条件に設定した。PH3.0-4.0. The working conditions were set at temperature 60-70 °C, current density 3-6 A/d m.

浴組成（ｇ／β） 硫酸ニッケル　２５０〜４００ はう酸　３０ ラウリル硫酸ナトリウム　０．４〜０．６−次電着後、
第２図（ｅｌに示すごとく、金型で曲げあるいは絞り加
工して母型４をドーム形状に成形加工した。Bath composition (g/β) Nickel sulfate 250-400 Hydrolic acid 30 Sodium lauryl sulfate 0.4-0.6 After secondary electrodeposition,
As shown in FIG. 2 (el), the mother die 4 was formed into a dome shape by bending or drawing with a die.

ついで、亜セレン酸の液中に浸漬し、−次組着層８の表
面に剥離処理を施した。Then, the surface of the second bonding layer 8 was subjected to a peeling treatment by immersing it in a selenite solution.

この剥離処理後に母型４を光沢剤を入れた電鋳浴に移し
てニッケルの二次電着を行って、第２図ｆｆｌに示すご
とく一次電着層８の表面に、網目状外刃１の毛導入孔２
・２間の連続リブ３となる二次電着層９を形成した。最
後に二次電着層９を一次電着層８から剥離し、第１図に
示すごとく毛導入孔２と、下面にカウンタシンク３ａか
形成された毛導入孔２・２間の連続リブ３とを有するド
ーム形の網目状外刃ｌを得た。After this peeling treatment, the matrix 4 is transferred to an electroforming bath containing a brightener, and secondary electrodeposition of nickel is performed, and as shown in FIG. Hair introduction hole 2
- A secondary electrodeposited layer 9 was formed to form continuous ribs 3 between the two. Finally, the secondary electrodeposition layer 9 is peeled off from the primary electrodeposition layer 8, and as shown in FIG. A dome-shaped mesh outer cutter l was obtained.

〔発明の効果〕〔Effect of the invention〕

以上のようにした本発明方法によれは、−次電着を添加
剤を含まないワット浴で行うため、靭性や伸びか良くて
硬度を抑えた一次電着層８を得ることかできる。従って
、母型４をドーム形状に成形加工する時も一次電着層８
にクラックが発生することが無くなり１品質の良好な外
刃を得ることができるとともに、成形用金型の耐久性の
向上も図れるに至った。According to the method of the present invention as described above, since the secondary electrodeposition is carried out in a Watts bath containing no additives, it is possible to obtain the primary electrodeposited layer 8 having good toughness and elongation and suppressed hardness. Therefore, when molding the matrix 4 into a dome shape, the primary electrodeposited layer 8
As a result, cracks do not occur and it is possible to obtain an outer cutter with good quality, and it is also possible to improve the durability of the mold.

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

第１図は本発明方法で得られた（−一人形網目状外刃の
断面図、艶２図（ａ）ないしくｆ）は本発明方法による
ドーム形網目状外刃の製造］二程を順次的に示す断面図
である。 １・・・網目状外刃。 ２・・・毛導入孔。 ３・・・連続リブ。 ４・・・母型。 ７・・・電気絶縁膜。 ８・・・−次組着層。 ９・・・二次電着層。 第１図 第　２　図（ａ） 第　２　図（ｂ） → 第　２　図（（） 第　２　図（ａ）Figure 1 is a cross-sectional view of a one-person reticulated outer cutter obtained by the method of the present invention, Figure 2 (a) to f) is the production of a dome-shaped reticulated outer cutter by the method of the present invention. It is sectional drawing shown sequentially. 1...Mesh-shaped outer blade. 2... Hair introduction hole. 3...Continuous ribs. 4...Mother type. 7... Electrical insulating film. 8...-Next bonding layer. 9...Secondary electrodeposition layer. Figure 1 Figure 2 (a) Figure 2 (b) → Figure 2 (() Figure 2 (a)

Claims (1)

【特許請求の範囲】 ｆｉｌ　平板状の母型４の表面における網目状外刃１の
毛導入孔２に相当する部分に、電気絶縁膜７を形成する
工程と、母型４の電気絶縁膜７で覆われていない表面に
一次電着層８を形成する工程と。 −次電着後の母型４をドーム形状に成形加工する工程と
、この成形加工後の一次電着層８の表面に。 剥離処理を施したのぢ二次電着によって網目状外刃１の
毛導入孔２・２間の連続リブ３となる二次電着層９を形
成する工程と、二次電着層９を剥離する工程とからなり
、−次電着が添加剤を釡まぬワット浴で行われているこ
とを特徴とする電気かみそりのドーム形網目状外刃の製
造方法。[Claims] fil A step of forming an electrically insulating film 7 on the surface of the flat matrix 4 corresponding to the hair introduction holes 2 of the mesh outer cutter 1; and a step of forming the electrically insulating film 7 of the matrix 4. a step of forming a primary electrodeposited layer 8 on the surface not covered with . - The step of molding the matrix 4 into a dome shape after the secondary electrodeposition, and the surface of the primary electrodeposition layer 8 after this molding. A step of forming a secondary electrodeposited layer 9 which becomes continuous ribs 3 between the hair introduction holes 2 and 2 of the mesh outer cutter 1 by secondary electrodeposition after being subjected to a peeling treatment; 1. A method for producing a dome-shaped mesh outer blade for an electric shaver, characterized in that the subsequent electrodeposition is carried out in a Watts bath without adding additives.