JPS60128282A - 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 electrodeposition layer by using a copper electroforming 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 hole 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 copper sulfate bath and is subjected to primary electrodeposition of copper by which an arc-shaped primary electrodeposition layer 9 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〕 この発明は電気かの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ｌば多数の毛導入孔２と１毛導入孔
２・２間に形成された連続リブ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 for manufacturing a dome-shaped mesh outer cutter for 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 has a large number of hair introduction holes 2 and continuous ribs formed between each hair introduction hole 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１
次いで一次電着を行い、−次電着屓の上に剥離処理を施
したのち二次電着がを行われる。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が剥
離し、また傷を受けたり、ピンホールが発生して一次・
二次電着層の形成に悪影響を及ぼし、良質の外刃がｆＨ
難い。Apply an electrical insulating film (resist) in the desired pattern to the matrix 1
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 will peel off, be scratched, or create pinholes. And the primary
It has a negative effect on the formation of the secondary electrodeposited layer, and the quality of the outer cutter becomes fH.
hard.

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。To this end, Japanese Patent Application Laid-Open No. 15882/1983 proposes a method in which the matrix is formed into a dome shape after the secondary electrodeposition is performed. 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. The electrical insulation film can be bent while being held down, thereby effectively preventing peeling and damage to the electrical insulating film.

しかし、従来では一次電着を二次電着と同様に硬度の高
いニッケル浴で行っていた。それも添加剤を含んだニッ
ケル浴であった。そのために、−次組着層が二次電着層
つまり外刃として必要とされる硬度と同一になり、この
ため硬度が過剰にアップして靭性、伸びに欠け２次に母
型をドーム成形する際に成形金型が早期に摩耗、損傷し
、金型寿命が短くなる点に問題があった。However, in the past, primary electrodeposition was performed in a highly hard nickel bath, similar to secondary electrodeposition. It was also a nickel bath with additives. For this reason, the hardness of the secondary bonding layer becomes the same as that required for the secondary electrodeposited layer, that is, the outer cutter, and as a result, the hardness increases excessively, resulting in lack of toughness and elongation. There was a problem in that the molding die would wear out and be damaged early when doing so, shortening the lifespan of the die.

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

そ５で、この発明は一次電着後に母型をトー人形状に成
形加工する外刃の製造方法において、添加剤（主に光沢
剤を意味する）を含まぬ銅浴で一次電着を行い、以て母
型の成形用金型の寿命を長くすることを目的とする。銅
浴としては電着物がビッカース硬度で４０〜８５．伸び
（％、５ｃｍ）が１５〜４０の値を示す酸性硫酸銅浴や
、ビッカース硬度で１００〜１６０．伸び（％、５ｃｍ
）が３０〜５０の高速シアン化銅浴かとくに推奨される
。なお、酸性硫酸銅浴でも添加刺入りになると。Fifth, this invention is a method for manufacturing an outer cutter in which a matrix is formed into a toe shape after primary electrodeposition, in which the primary electrodeposition is performed in a copper bath containing no additives (mainly meaning brighteners). The purpose of this is to extend the life of the molding die of the mother die. As a copper bath, the electrodeposited material has a Vickers hardness of 40 to 85. An acidic copper sulfate bath exhibiting a value of elongation (%, 5 cm) of 15 to 40, and a Vickers hardness of 100 to 160. Elongation (%, 5cm
) is particularly recommended. In addition, even in an acidic copper sulfate bath, additives can cause stinging.

ビッカース硬度で８０〜１８０とかたさが倍増し。The hardness has doubled to 80 to 180 on the Vickers hardness scale.

伸び（％、５ｃｍ）は１〜２０と大幅に落ちることが知
られている。このような添加剤とじ−（はアセチルシア
ンアミド２アセデルチオ尿素、２・６ナフタリンスルポ
ン酸ソーダ、ジブデルナフタリンスルボン酸ソーダがあ
り、ニッケル浴による一次電着層にかかる添加剤を加え
るのは内部応力および平滑性を向上させるためであるが
１本発明方法は銅の電着析出物の内部応力が比較的少な
い点に着目してなされたものである。母型としてはアル
ミニウム又はアルミニウム合金のいわゆるアルミ母型や
銅厚型が代表的なものとして考えられる。It is known that the elongation (%, 5 cm) is significantly lower, ranging from 1 to 20. Such additives (such as acetyl cyanamide 2-acedelthiourea, sodium 2.6-naphthalene sulfonate, and sodium dibdel-naphthalene sulfonate) are added to the primary electrodeposited layer using a nickel bath. In order to improve the internal stress and smoothness, the method of the present invention was developed by focusing on the fact that the internal stress of electrodeposited copper is relatively low.The matrix is made of aluminum or aluminum alloy. So-called aluminum master molds and thick copper molds are considered to be typical examples.

但し、アルミ母型を使用するときは銅電鋳が容易にでき
るように母型に予めメッキ、一般にニッケルメッキを施
しておく必要があり、更に密着の良好なメッキおよび電
鋳を得るためにジンケート法（亜鉛置換法）などで前処
理しておくことが望まれる。However, when using an aluminum mother mold, it is necessary to plate the mother mold in advance, generally nickel plating, in order to facilitate copper electroforming, and to obtain better adhesion of plating and electroforming, zincate is applied. It is desirable to perform pretreatment using a method such as a zinc substitution method.

〔実施例１〕 まず、第２図（ａｌ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。[Example 1] First, as shown in FIG.
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、現像の各処理を施し、第
２図（Ｃ）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 subjected to baking and development processes, and the hair introduction holes of the mesh outer cutter 1 are formed as shown in FIG. 2(c). An electrical insulating film 7 of a curable resin 5 having a pattern corresponding to No. 2 was formed.

ついで、電気絶縁膜７を有するアルミ母型４をアルカリ
洗浄（５％水酸化ナトリウム）した後。Next, the aluminum master mold 4 having the electrical insulating film 7 was washed with an alkali (5% sodium hydroxide).

水洗い、酸洗い（容積比１：１硝酸水溶液）、水洗いを
順に行って下記即成の処理液でジンケート処理を施した
。Washing with water, pickling (nitric acid aqueous solution at a volume ratio of 1:1), and washing with water were carried out in this order, and a zincate treatment was performed using the ready-made treatment solution shown below.

ジンケート処理液組成（ｇ／β） 水酸化ナトリウム　５０ 酸化亜鉛　５ ０ツシエル塩　５０ 塩化第２鉄　２ 硝酸ナトリウム　１ 更に、再び前述の水洗い、酸洗い、水洗い、ジンケート
処理を繰り返して行い、ジンケート処理後に水洗いして
アルミ母型４に１〜３μｍ厚でニッケルメッキを施した
。Zincate treatment liquid composition (g/β) Sodium hydroxide 50 Zinc oxide 5 0 Tsusier's salt 50 Ferric chloride 2 Sodium nitrate 1 Furthermore, the above-mentioned water washing, pickling, water washing, and zincate treatment were repeated again, and after the zincate treatment, After washing with water, the aluminum matrix 4 was plated with nickel to a thickness of 1 to 3 μm.

ついで、酸性硫酸銅浴（無光混浴）にアルミ母型４を移
し、銅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１例えば断面が
ほぼ円弧状の一次電着層８を形成した。このときの酸゛
性硫酸銅浴の組成と作業条件は次の通りである。Next, the aluminum master mold 4 is transferred to an acidic copper sulfate bath (lightless mixed bath), and primary electrodeposition of copper is performed to remove the parts of the master mold 4 that are not covered by the electrical insulating film 7, as shown in FIG. 2(d). On the surface, a primary electrodeposition layer 8 was formed which protruded beyond the thickness of the electrical insulating film 7 and had, for example, a substantially arcuate cross section. The composition and working conditions of the acidic copper sulfate bath were as follows.

一次電着後に水洗い、乾燥してから第２図（ｅ）に示す
ごとくプレスで曲げあるいは絞り加工して。After primary electrodeposition, it is washed with water, dried, and then bent or drawn using a press as shown in FIG. 2(e).

金型で母型４をドーム形状に成形加工した。The mother mold 4 was molded into a dome shape using a mold.

ついで、亜セレン酸に浸漬して一次電着層８の表面に剥
離処理を施した。Then, the surface of the primary electrodeposited layer 8 was subjected to a peeling treatment by immersing it in selenite.

剥離処理後に母型４を光沢剤をいれた電鋳浴に移してニ
ッケルの二次電着を行い、第２図（ｆｌに示すごとく一
次電着層８の表面に綱目状外刃１の毛導入孔２・２間の
連続リブ３となる二次電着Ｎ９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。After the peeling treatment, the matrix 4 is transferred to an electroforming bath containing a brightener to perform secondary electrodeposition of nickel, and as shown in FIG. A secondary electrodeposited layer N9 was formed to form a continuous rib 3 between the introduction holes 2.Finally, the secondary electrodeposition layer 9 was peeled off from the primary electrodeposition layer 8, and the hair introduction holes 2 and 2 were formed as shown in FIG. .

下面にカウンクシンク３ａが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１を得
た。Hair introduction holes 2 and 2 with a cowl sink 3a formed on the lower surface
A dome-shaped mesh outer cutter 1 having continuous ribs 3 in between was obtained.

〔実施例２〕 これば銅刊型４の表面をショツトブラスト加工したのち
、母型４を水洗いしたうえで該母型４に第１実施例の場
合と同様に所望の電気絶縁膜７を形成した。[Example 2] After the surface of the copper mold 4 is shot-blasted, the mother mold 4 is washed with water, and the desired electrical insulating film 7 is formed on the mother mold 4 in the same manner as in the first example. did.

しかるのち、水洗い、酸洗い（硫酸１０〜２０％）して
から実施例１に示す酸性硫酸銅浴で母型４に銅の一次電
着を行って一次電着層８を形成した。Thereafter, after washing with water and pickling (10 to 20% sulfuric acid), primary electrodeposition of copper was performed on the matrix 4 in the acidic copper sulfate bath shown in Example 1 to form a primary electrodeposition layer 8.

一次電着後は第１実施例の場合と同様に、母型４を金型
でドーム形状に成形加工し、−次組着層８の表面に剥離
処理を施したのち、二〇ソゲルの二次電着を行って二次
電着層９を形成し、以後は同様にして外刃１を得た。After the primary electrodeposition, as in the case of the first embodiment, the mother mold 4 is molded into a dome shape using a metal mold, the surface of the secondary bonding layer 8 is subjected to a peeling treatment, and then a Secondary electrodeposition was performed to form a secondary electrodeposition layer 9, and the outer cutter 1 was obtained in the same manner.

〔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ば、母型４４に一次
電着を行ったのぢに該７１．型４を金型でドーム形状に
成形加工する形態であるから２　この金型による成形加
工時に一次電着層８が電気絶縁膜７を押さえて電気絶縁
膜７の剥離、損傷などをよく防止できる利点を保有して
いる。そのうえて。According to the method of the present invention as described above, the 71. Since the mold 4 is molded into a dome shape using a mold, the primary electrodeposited layer 8 presses the electrical insulating film 7 during molding using this mold, thereby effectively preventing peeling and damage of the electrical insulating film 7. Possesses advantages. On top of that.

−次電着はニッケルに比べて硬度の低いｔｌｉ１重鋳で
行い、しかもその銅電鋳には添加物を含まないものとし
であるので、硬度アップを抑えて硬度が低いままで母型
４を金型で所望の１ニ一人形状に曲げ。-The next electrodeposition is performed using tli1 heavy casting, which has a lower hardness than nickel, and the copper electroforming does not contain any additives, so the mother mold 4 can be formed while suppressing the hardness increase and keeping the hardness low. Bend it into the desired shape using a mold.

絞り加工できることになり、この成形用金型の摩耗、損
傷を長期にわたってよく防止し３金型の耐久性を飛躍的
に向上できるに至った。Drawing can now be performed, and wear and damage to the molding die can be effectively prevented over a long period of time, making it possible to dramatically improve the durability of the three molds.

【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ドーム形網目状外刃の断
面図、第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工程を順次的に示す断面図であ
る。 ■・・・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。Fig. 1 is a sectional view of the dome-shaped mesh outer cutter obtained by the method of the present invention, and Fig. 2 (a) to f) sequentially show the manufacturing process of the dome-shaped mesh outer cutter by the method of the invention. FIG. ■...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.

Claims (1)

【特許請求の範囲】[Claims] （１）　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。 −次組着後の母型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ち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１ｉｉ９を剥離する工程とから
なり、−次電着が添加剤を含まぬ銅電鋳で行われること
を特徴とする電気かみそりのドーム形１ｇ目状外刃の製
造方法。(1) 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; a step of forming a primary electrodeposited layer 8 on a surface that is - The step of molding the mother mold 4 into a dome shape after the next assembly, and the surface of the primary electrodeposited layer 8 after this molding. After performing a peeling treatment, a step of forming a secondary electrodeposited layer 9 that becomes a continuous rib 3 between the hair introduction holes 2 of the mesh outer cutter 1 by secondary electrodeposition, and peeling off the secondary electrodeposition 1ii9. 1. A method for producing a dome-shaped 1g-shaped outer cutter for an electric shaver, characterized in that the second electrodeposition is performed by copper electroforming that does not contain additives.