JPH0913191A - Electroplating device - Google Patents
Electroplating deviceInfo
- Publication number
- JPH0913191A JPH0913191A JP16433095A JP16433095A JPH0913191A JP H0913191 A JPH0913191 A JP H0913191A JP 16433095 A JP16433095 A JP 16433095A JP 16433095 A JP16433095 A JP 16433095A JP H0913191 A JPH0913191 A JP H0913191A
- Authority
- JP
- Japan
- Prior art keywords
- work
- plating
- masking
- masking jig
- jig
- 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
Links
Landscapes
- Electroplating Methods And Accessories (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電気メッキ装置における
マスキング技術に関する。FIELD OF THE INVENTION The present invention relates to a masking technique in an electroplating apparatus.
【０００２】[0002]
【従来の技術】棒状のワークの一例としてのピストンロ
ッドは、防錆と耐摩耗性付加とを目的としたメッキ処理
が施される。先端に連結金具を取付けるためのねじ部を
有するピストンロッドが一般に使用されるが、ねじ部に
メッキ膜が付くとナットが螺着出来なくなるなどの不都
合が発生する。そこで、一般に次の対策を講じる。2. Description of the Related Art A piston rod, which is an example of a rod-shaped work, is plated for the purpose of preventing rust and adding wear resistance. A piston rod having a threaded portion for attaching a connecting fitting to the tip is generally used, but if a plated film is attached to the threaded portion, a nut cannot be screwed on and the like occurs. Therefore, the following measures are generally taken.
【０００３】図１１は従来のピストンロッドのメッキに
おけるマスク説明図であり、ピストンロッド１００の先
端のねじ部１０１に、ゴム製のキャップ１０２を被せた
状態でメッキ液１０３へ浸漬してメッキ処理をする。FIG. 11 is an explanatory view of a mask in the conventional plating of a piston rod, in which a threaded portion 101 at the tip of the piston rod 100 is covered with a rubber cap 102 and immersed in a plating solution 103 for plating treatment. To do.
【０００４】[0004]
【発明が解決しようとする課題】ピストンロッドの種類
毎にねじ部の径が変わるために、サイズ毎に多数のキャ
ップ１０２を準備しなければならない。加えて、キャッ
プ１０２の脱着は手作業となる。これでは生産効率を上
げることはできない。Since the diameter of the threaded portion varies depending on the type of piston rod, a large number of caps 102 must be prepared for each size. In addition, the cap 102 is manually attached and detached. This cannot improve production efficiency.
【０００５】[0005]
【課題を解決するための手段】そこで、本発明者らは人
手によるキャップの脱着を廃止することを目指して開発
を開始し、この過程でねじ部を一廻り大きな内径の円筒
を被せるだけでマスキング作用が得られることを見出し
た。ねじ部と円筒内面との間に隙間があって、メッキ液
が介在するのでねじ部へのメッキは皆無ではないが、実
用上問題とならぬ程度の厚さに留めることができるとい
うことである。この技術を基本にして以下の手段を発明
し、所望の効果を得ることに成功した。Therefore, the inventors of the present invention started the development aiming at eliminating the manual attachment / detachment of the cap, and in the course of this process, masking is performed only by covering the screw part with a cylinder having a large inner diameter. It was found that the action can be obtained. Since there is a gap between the screw part and the inner surface of the cylinder, and the plating solution is present, plating on the screw part is not complete, but it is possible to keep the thickness to a level that does not pose a practical problem. . Based on this technology, the following means were invented and succeeded in obtaining desired effects.
【０００６】請求項１は、陽極を備えメッキ液を満たし
たメッキ槽に、ワーク支持機構で吊下げた棒状のワーク
を浸漬する形式の電気メッキ装置において、この電気メ
ッキ装置は、メッキ槽の液中に、ワークの下部をマスク
するマスキング治具を備えたことを特徴とする。According to a first aspect of the present invention, there is provided an electroplating apparatus of a type in which a rod-shaped work suspended by a work supporting mechanism is immersed in a plating tank which is equipped with an anode and which is filled with a plating solution. It is characterized in that a masking jig for masking the lower part of the work is provided therein.
【０００７】請求項２は、マスキング治具を、治具昇降
機構を介して高さ位置調整可能に取付けたことを特徴と
する。According to a second aspect of the present invention, the masking jig is attached so that the height position thereof can be adjusted through a jig lifting mechanism.
【０００８】請求項３は、マスキング治具が、ワークの
下部を収納するための、ワークの外径より大きな凹部を
備えたことを特徴とする。According to a third aspect of the present invention, the masking jig is provided with a recess for accommodating the lower part of the work, the recess being larger than the outer diameter of the work.
【０００９】請求項４は、マスキング治具が、ワークの
下部を収納するための、ワークの外径より大径の貫通孔
を備えたことを特徴とする。According to a fourth aspect of the present invention, the masking jig is provided with a through hole for accommodating the lower portion of the work and having a diameter larger than the outer diameter of the work.
【００１０】請求項５は、マスキング治具が、ワークの
下部を収納するための、下方へ縮径するコーン部とこの
コーン部につづく円筒部とを備えたことを特徴とする。According to a fifth aspect of the present invention, the masking jig is provided with a cone portion for accommodating a lower portion of the work, the cone portion having a diameter reduced downward, and a cylindrical portion following the cone portion.
【００１１】[0011]
【作用】請求項１において、メッキ槽の液中に備えたマ
スキング治具に、ワークの下部を挿入するだけでメッキ
処理中のマスキングを実施できる。このマスキング治具
により手作業による治具の脱着が不要となり、作業効率
を飛躍的に向上することができる。According to the first aspect of the present invention, the masking during the plating process can be carried out simply by inserting the lower part of the work into the masking jig provided in the plating bath liquid. With this masking jig, the jig does not have to be attached and detached by hand, and work efficiency can be dramatically improved.
【００１２】請求項２において、マスキング治具を、治
具昇降機構を介して高さ位置調整可能に取付けて、ワー
クの長さの変化に対処する。According to a second aspect of the present invention, the masking jig is attached via a jig elevating mechanism so that the height position can be adjusted to cope with a change in the length of the work.
【００１３】請求項３において、ワークの下部を収納す
るにはマスキング治具の凹部にワークの下部を上から差
込むだけでよい。In order to accommodate the lower part of the work, the lower part of the work may be inserted into the concave portion of the masking jig from above.
【００１４】請求項４において、ワークの下部を収納す
るにはマスキング治具の貫通孔にワークの下部を上から
差込むだけでよい。In order to store the lower part of the work in claim 4, it is sufficient to insert the lower part of the work into the through hole of the masking jig from above.
【００１５】請求項５において、、円筒部をワークの外
径より僅かに大径としてワークへのメッキの付着を制限
し、また、コーン部でメッキの付着量を傾斜的に変更さ
せる。簡単な構造で、メッキ厚さが変更できる。In claim 5, the diameter of the cylindrical portion is made slightly larger than the outer diameter of the work to limit the adhesion of the plating to the work, and the amount of the adhesion of the plating is changed in an inclined manner at the cone portion. With a simple structure, the plating thickness can be changed.
【００１６】[0016]
【実施例】本発明の実施例を添付図に基づいて以下に説
明する。なお、図面は符号の向きに見るものとする。図
１は本発明に係る棒状のワークを備えたシリンダユニッ
トの一例を示す図であり、縦向き状態で説明する。車両
のサスペンションとして実用に供されているシリンダユ
ニット１は、シリンダ２にピストン４を内蔵し、このピ
ストン４に基部を連結したピストンロッド５をシリンダ
２の外まで延出したものであり、ピストンロッド５はオ
シルシール６に摺接するため、この部分には硬質クロム
メッキを施して摩耗を防ぐ。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a view showing an example of a cylinder unit provided with a rod-shaped work according to the present invention, which will be described in a vertically oriented state. A cylinder unit 1 which is practically used as a vehicle suspension has a piston 4 built in a cylinder 2, and a piston rod 5 having a base connected to the piston 4 extended to the outside of the cylinder 2. Since 5 is in sliding contact with the oscill seal 6, hard chromium plating is applied to this portion to prevent abrasion.
【００１７】図２は本発明に係る棒状のワークとしての
ピストンロッド図であり、メッキ処理の姿勢に合せて、
図１と向きが同じである。ピストンロッド５は大径部５
ａが前記オイルシール６に摺接する部分であるから特に
メッキ処理をする必要がある。これにつながる中径部５
ｂ，５ｃも防錆の為にメッキを施す。下部のねじ部５ｄ
は図示せぬ金具を捩じ込む関係でメッキを施さない方が
良い。上部のねじ部５ｅもピストンを固定するナットを
捩じ込む関係でメッキを施さない。このようなメッキ処
理をするための装置を次に説明する。FIG. 2 is a piston rod diagram as a rod-shaped work according to the present invention.
The orientation is the same as in FIG. The piston rod 5 has a large diameter portion 5.
Since a is a portion which is in sliding contact with the oil seal 6, it is necessary to perform a plating treatment. Medium diameter part 5 connected to this
b and 5c are also plated for rust prevention. Lower screw part 5d
It is better not to apply plating because the metal fitting (not shown) is screwed in. The upper threaded portion 5e is not plated because the nut for fixing the piston is screwed in. An apparatus for performing such a plating process will be described next.
【００１８】図３は本発明に係る電気メッキ装置の断面
図である。電気メッキ装置１０は、基礎から起設した支
柱１１，１１の上部に水平材１２，１２を取付け、図面
表裏方向に並ぶ水平材１２にレール１３を渡し、２本の
レール１３，１３に自走台１５を掛け渡し、この自走台
１５にワーク支持機構２０（詳しい構成は後述する。）
を取付け、このワーク支持機構２０に複数本の棒状ワー
ク即ちピストンロッド５・・・（・・・は複数個を示す。以下
同様。）を吊下げ、下方に配置したメッキ槽３０に浸漬
してメッキ処理する装置である。FIG. 3 is a sectional view of the electroplating apparatus according to the present invention. In the electroplating apparatus 10, horizontal members 12, 12 are attached to the upper portions of the pillars 11, 11 that are erected from the foundation, and the rails 13 are passed to the horizontal members 12 lined up in the front-back direction of the drawing, and the two rails 13, 13 are self-running. The table 15 is bridged, and the work support mechanism 20 is provided on the self-propelled table 15 (detailed configuration will be described later).
A plurality of rod-shaped works, that is, piston rods 5 ... (... indicates a plurality, the same applies hereinafter) are hung on the work supporting mechanism 20 and immersed in the plating tank 30 arranged below. This is a device for plating.
【００１９】ワーク支持機構２０はワーク昇降シリンダ
２１と、ガイド２２，２２と、昇降板２３と、ワーク把
持ソケット２４・・・とからなり、ワーク昇降シリンダ２
１の作用でワーク把持ソケット２４・・・は昇降板２３と
ともに昇降する。また、自走台１５は走行モータ１６と
ピニオン１７とラック１８とにより、図面表裏方向に走
行可能である。The work supporting mechanism 20 comprises a work lifting cylinder 21, guides 22 and 22, a lifting plate 23, a work holding socket 24, ...
By the action of 1, the work gripping sockets 24 ... Further, the self-propelled table 15 can travel in the front-back direction of the drawing by the traveling motor 16, the pinion 17, and the rack 18.
【００２０】メッキ槽３０は、サービスタンク３２を備
え、ポンプ３３及び供給管３４を介して成分管理された
メッキ液を槽内に供給し、また、戻り管３５を介してメ
ッキ液をサービスタンク３２へ戻すことができる。メッ
キ槽３０は、電気メッキの為の陽極３６、陽極側バスバ
ー３７、陰極受け台３８及び陰極側バスバー３９を備え
る。そして、メッキ槽３０は、内部にマスキング治具４
０を備える。The plating tank 30 is provided with a service tank 32, which supplies the plating solution whose components are controlled into the tank via a pump 33 and a supply pipe 34, and also supplies the plating solution to the service tank 32 via a return pipe 35. Can be returned to. The plating tank 30 includes an anode 36 for electroplating, an anode side bus bar 37, a cathode pedestal 38, and a cathode side bus bar 39. The plating tank 30 has a masking jig 4 inside.
0 is provided.
【００２１】マスキング治具４０は図４，５で構造を説
明するが、以下に述べる治具昇降機構５０に保持され、
高さ位置調整可能である。治具昇降機構５０は、略Ｕ字
状で前記マスキング治具４０・・・を支えるリフトフレー
ム５２と、このリフトフレーム５２の両端を支えるナッ
ト部材５３，５３と、これらのナット部材５３，５３を
昇降する昇降スクリュー５４，５４と、これら昇降スク
リュー５４，５４を回動するための伝動ロッド５５，５
５及びべベルギヤ５６・・・と、一方の駆動スクリュー５
４に直結した昇降モータ５７と、他方の駆動スクリュー
５４に直結した回転検出器５８とからなる。The structure of the masking jig 40 will be described with reference to FIGS. 4 and 5. The masking jig 40 is held by a jig elevating mechanism 50 described below.
The height position can be adjusted. The jig lifting mechanism 50 has a lift frame 52 that supports the masking jigs 40 ... In a substantially U shape, nut members 53 and 53 that support both ends of the lift frame 52, and these nut members 53 and 53. Lifting screws 54, 54 that move up and down, and transmission rods 55, 5 for rotating these lifting screws 54, 54
5 and bevel gear 56 ... and one driving screw 5
4 is composed of a lifting motor 57 directly connected to the motor 4, and a rotation detector 58 directly connected to the other driving screw 54.
【００２２】図４は本発明に係るマスキング治具の第１
実施例断面図であり、マスキング治具４０は、絶縁性及
び耐薬品性に富むポリテトラフルオロエチレンが好適で
あり、それに逆円錐台状の凹部４１を形成してなる。凹
部４１は、ワークとしてのピストンロッド５のねじ部５
ｄの外径ｄ１より、大径であって、例えば、凹部４１の
底の径をＤ１、入口の径をＤ２とした場合に、Ｄ１＝
（１．２〜１．５）×ｄ１、Ｄ２＝（１．６〜２．５）
×ｄ１とする。４２は、ドレーン抜きの小孔であり、凹
部４１の底に溜まるドレーンを排出する為のものであ
る。FIG. 4 shows a first masking jig according to the present invention.
It is a cross-sectional view of an example, and the masking jig 40 is preferably made of polytetrafluoroethylene, which has excellent insulation and chemical resistance, and is formed with an inverted truncated cone-shaped recess 41 therein. The recess 41 is the threaded portion 5 of the piston rod 5 as the work.
If the diameter of the bottom of the recess 41 is D1 and the diameter of the inlet is D2, which is larger than the outer diameter d1 of d, D1 =
(1.2 to 1.5) × d1, D2 = (1.6 to 2.5)
Let xd1. Reference numeral 42 is a small hole for drainage, which is for discharging the drainage accumulated at the bottom of the recess 41.
【００２３】図５は本発明に係るマスキング治具の第２
実施例断面図であり、マスキング治具４０は、ピストン
ロッド５のねじ部５ｄより大径の貫通孔４３を備えたも
のである。ワークとしてのピストンロッド５のねじ部５
ｄの外径ｄ１、貫通孔４３の径Ｄ３とした場合に、Ｄ３
＝（１．５〜２．２）×ｄ１とする。FIG. 5 shows a second masking jig according to the present invention.
It is a sectional view of the embodiment, and the masking jig 40 is provided with a through hole 43 having a larger diameter than the threaded portion 5d of the piston rod 5. Threaded part 5 of piston rod 5 as work
If the outer diameter d1 of d and the diameter D3 of the through hole 43 are D3,
= (1.5 to 2.2) × d1.
【００２４】以上に述べた電気メッキ装置の作用を次に
説明する。図３において、メッキ処理すべきピストンロ
ッド５の長さに応じて、マスキング治具４０の高さを調
整する。一方、走行モータ１６を作動して、ワークをメ
ッキ槽３０に移動し、その位置でワーク昇降シリンダ２
１を作動して、ワークを下降する。The operation of the electroplating apparatus described above will be described below. In FIG. 3, the height of the masking jig 40 is adjusted according to the length of the piston rod 5 to be plated. On the other hand, the traveling motor 16 is operated to move the work to the plating tank 30, and at that position, the work lifting cylinder 2
1 is operated to lower the work.
【００２５】図６は本発明に係る電気メッキ装置の作用
図であり、昇降板２３を陰極受け台３８に載せた状態を
示す。次に、陽極側バスバー３７，陰極側バスバー３９
を通じて陽極３６・・・とピストンロッド５との間に所定
の電圧を印加する。すると、メッキ液中の金属イオン
（Ｃｒイオンなど）が陰極側のピストンロッド５に向
い、金属が還元析出し始める。FIG. 6 is an operation diagram of the electroplating apparatus according to the present invention, showing a state in which the elevating plate 23 is placed on the cathode receiving base 38. Next, the anode side bus bar 37 and the cathode side bus bar 39
A predetermined voltage is applied between the anode 36 ... And the piston rod 5 through. Then, metal ions (Cr ions or the like) in the plating solution are directed toward the piston rod 5 on the cathode side, and the metal starts to be reduced and deposited.
【００２６】図４において、概念的には金属イオンＭｉ
１はピストンロッド５に至りそこに金属Ｍが還元析出す
る。一方、金属イオンＭｉ２，Ｍｉ３はマスキング治具
４０で遮断される。しかし、凹部４１とねじ部５ｄとの
間に隙間Ｓがあるので、この隙間から金属イオンＭｉ４
が廻り込んでねじ部６ｄに至るものもある。本発明者等
の研究によると、隙間Ｓがねじ部５ｄの半径（１／２ｄ
１）以内であれば、金属イオンＭｉ４の侵入量は許容さ
れる程度である。凹部４１の開口が小さ過ぎるとピスト
ンロッド５のねじ部５ｄの挿入が難しくなるので、少な
くとも１．６×ｄ１とする。図５も同様である。In FIG. 4, conceptually, the metal ion Mi is
1 reaches the piston rod 5, and the metal M is reduced and deposited there. On the other hand, the metal ions Mi2 and Mi3 are blocked by the masking jig 40. However, since there is a gap S between the recess 41 and the threaded portion 5d, the metal ion Mi4 is discharged from this gap.
There is also one that goes around and reaches the screw portion 6d. According to the research conducted by the present inventors, the gap S has a radius (1 / 2d
If it is within 1), the penetration amount of the metal ion Mi4 is acceptable. If the opening of the concave portion 41 is too small, it becomes difficult to insert the threaded portion 5d of the piston rod 5, and therefore, at least 1.6 × d1. The same applies to FIG.
【００２７】図６に戻って、メッキ処理が終れば通電を
中止するとともに、ワーク昇降シリンダ２１を作動し
て、昇降板２３を上昇する。図３にて、走行モータ１６
を作動して、昇降板２３を次の槽へ移動する。従って、
マスキング治具４０・・・はメッキ槽３０に残したままで
ピストンロッド５のみを移動させたことになる。このマ
スキング治具４０で後続のピストンロッド５をマスクす
るから、作業効率が良い。尚、マスキング治具４０は、
下位に待機させておいて、ピストンロッド５の下降の後
に上昇させて位置合せしてもよい。Returning to FIG. 6, when the plating process is completed, the energization is stopped and the work elevating cylinder 21 is operated to elevate the elevating plate 23. In FIG. 3, the traveling motor 16
Is operated to move the lifting plate 23 to the next tank. Therefore,
Only the piston rod 5 is moved while the masking jig 40 ... Is left in the plating tank 30. Since the subsequent piston rod 5 is masked by the masking jig 40, the working efficiency is good. The masking jig 40 is
Alternatively, the piston rod 5 may be made to stand by in a lower position, and then the piston rod 5 may be lowered and then positioned for alignment.
【００２８】本発明のマスキング治具でメッキ厚の調整
が可能であるので、その実施例を、次に説明する。図７
は本発明に係るマスキング治具の第３実施例断面図であ
り、マスキング治具６０は、ワークの下部を収納するた
めの、下方へ縮径するコーン部６１とこのコーン部６１
につづく円筒部６２とを備え、この円筒部６２をワーク
の外径より僅かに大径としたものである。Since the plating thickness can be adjusted with the masking jig of the present invention, its embodiment will be described below. FIG.
FIG. 4 is a sectional view of a masking jig according to a third embodiment of the present invention. A masking jig 60 is a cone portion 61 for reducing the diameter of a workpiece and a cone portion 61 for reducing the diameter of the workpiece.
And a cylindrical portion 62 that follows, and the diameter of the cylindrical portion 62 is slightly larger than the outer diameter of the work.
【００２９】図８は本発明に係るマスキング治具の第３
実施例の作用図であり、マスキング治具６０に上からワ
ークを差込み、メッキ処理を施すと、コーン部６１の上
位置ほどメッキの厚さが大きく、下位置ほどメッキの厚
さが小さくなる。更に、円筒部６２は十分に小径であっ
て、隙間が小さくメッキ液の流れも少ないため、メッキ
の厚さは極く小さくなる。従って、図示するごとくメッ
キ６３は大径部５ａは厚く、中径部５ｃは薄く、ねじ部
５ｄは極く薄くなる。ただし、メッキ６３は数十〜数百
μｍであるが、強調して図示した。前記コーン部６１は
有効なガイド部でもあるから、下方の円筒部６２を十分
に小径にすることができる。FIG. 8 shows a third masking jig according to the present invention.
It is an operation diagram of the embodiment, and when a work is inserted into the masking jig 60 from above and plating is performed, the plating thickness becomes larger at the upper position of the cone portion 61 and becomes smaller at the lower position thereof. Furthermore, since the cylindrical portion 62 has a sufficiently small diameter, a small gap, and a small flow of the plating solution, the thickness of plating is extremely small. Therefore, as shown in the drawing, the large diameter portion 5a of the plating 63 is thick, the middle diameter portion 5c is thin, and the screw portion 5d is extremely thin. However, although the plating 63 has a thickness of several tens to several hundreds of μm, it is emphasized in the drawing. Since the cone portion 61 is also an effective guide portion, the diameter of the lower cylindrical portion 62 can be made sufficiently small.
【００３０】メッキの厚さを部分的に変更するには、陽
極３６（図６参照）の長さを変えたり、湾曲させたり、
傾斜させる手法がある。しかし、この手法は量産装置に
向かない。その点、本実施例によれば、簡単な構造のマ
スキング治具６０で、簡単にメッキの厚さを変更するこ
とができる。In order to partially change the plating thickness, the length of the anode 36 (see FIG. 6) may be changed or curved,
There is a method of tilting. However, this method is not suitable for mass production equipment. In this respect, according to the present embodiment, the plating thickness can be easily changed with the masking jig 60 having a simple structure.
【００３１】図９は本発明に係るマスキング治具の第４
実施例断面図であり、図７のマスキング治具６０の変更
例であり、マスキング治具７０は、ワークの下部を収納
するための、下方へ縮径するコーン部７１とこのコーン
部７１につづく円筒部７２とを備え、この円筒部７２を
ワークの外径より僅かに大径とするとともに、円筒部７
２の途中に隙間を絞りのための環状突起７４を設けたも
のである。FIG. 9 shows a fourth masking jig according to the present invention.
8 is a cross-sectional view of an embodiment, which is a modification of the masking jig 60 of FIG. 7, in which a masking jig 70 is provided with a cone portion 71 for reducing the diameter of the workpiece and a cone portion 71 that is reduced in diameter downward. And a cylindrical portion 72 having a diameter slightly larger than the outer diameter of the workpiece.
An annular protrusion 74 for narrowing the gap is provided in the middle of 2.
【００３２】図１０は本発明に係るマスキング治具の第
４実施例の作用図であり、メッキ７３は、大径部５ａは
厚く、中径部５ｃは薄くなるとともに、環状突起７４の
作用でねじ部５ｄには殆ど付かない。環状突起７４はワ
ークの軸方向における寸法が十分に小さいので、挿入中
にワークが環状突起７４に当ってもそれほどの挿入抵抗
とならず、また、メッキ中にワークが環状突起７４に接
触してもこの部分はめっきを必要としないので、実用上
の問題とならない。FIG. 10 is an operation diagram of the fourth embodiment of the masking jig according to the present invention. In the plating 73, the large diameter portion 5a is thick, the medium diameter portion 5c is thin, and the annular projection 74 acts. The screw part 5d is hardly attached. Since the annular projection 74 has a sufficiently small size in the axial direction of the workpiece, even if the workpiece hits the annular projection 74 during insertion, the insertion resistance does not become so great, and the workpiece contacts the annular projection 74 during plating. However, since this portion does not require plating, there is no practical problem.
【００３３】以上に述べた第３，４実施例のマスキング
治具６０，７０を基本形として、ワークの寸法、段部の
形状に合せて、コーン部６１，７１や円筒部６２，７２
の径及び長さを決めればよい。Using the masking jigs 60 and 70 of the third and fourth embodiments described above as basic shapes, the cone portions 61 and 71 and the cylindrical portions 62 and 72 are matched to the dimensions of the workpiece and the shape of the step portion.
The diameter and length of the can be determined.
【００３４】[0034]
【発明の効果】本発明は上記構成により次の効果を発揮
する。請求項１は、メッキ槽の液中に、ワークの下部を
マスクするマスキング治具を備えたので、マスキング治
具に、ワークの下部を挿入するだけでメッキ処理中のマ
スキングを実施できる。このマスキング治具により手作
業による治具の脱着が不要となり、作業効率を飛躍的に
向上することができる。The present invention has the following effects due to the above configuration. According to the first aspect, the masking jig for masking the lower part of the work is provided in the liquid in the plating tank. Therefore, the masking during the plating process can be performed only by inserting the lower part of the work into the masking jig. With this masking jig, the jig does not have to be attached and detached by hand, and work efficiency can be dramatically improved.
【００３５】請求項２は、マスキング治具を、治具昇降
機構を介して高さ位置調整可能に取付けたので、ワーク
の長さの変化に対処することができる。マスキング治具
が昇降可能であるから、昇降シリンダはストローク制御
する必要がないので、極め単純なエアシリンダで済ませ
ることができ、設備費を抑えることができる。According to the second aspect, since the masking jig is attached so that the height position can be adjusted via the jig lifting mechanism, it is possible to cope with the change in the length of the work. Since the masking jig can be moved up and down, it is not necessary to control the stroke of the lifting cylinder, so a simple air cylinder can be used, and the equipment cost can be reduced.
【００３６】請求項３は、マスキング治具に、ワークの
下部を収納するための、ワークの外径より大きな凹部を
備えたので、ワークの挿抜が容易となる。According to the third aspect of the present invention, the masking jig is provided with a recess for accommodating the lower part of the work, the recess being larger than the outer diameter of the work, so that the work can be easily inserted and removed.
【００３７】請求項４は、マスキング治具に、ワークの
下部を収納するための、ワークの外径より大径の貫通孔
を備えたので、ワークの挿抜が容易となるとともに、マ
スキング治具に古いメッキ液が残留する心配がないの
で、安定したメッキ処理が行なえる。According to a fourth aspect of the present invention, the masking jig is provided with a through hole for accommodating the lower part of the work and having a diameter larger than the outer diameter of the work. Since there is no concern that the old plating solution will remain, stable plating can be performed.
【００３８】請求項５は、円筒部をワークの外径より僅
かに大径としてワークへのメッキの付着を制限し、ま
た、コーン部でメッキの付着量を傾斜的に変更させる。
簡単な構造で、メッキ厚さが変更できる。According to a fifth aspect of the present invention, the diameter of the cylindrical portion is made slightly larger than the outer diameter of the work to limit the adhesion of the plating to the work, and the amount of the adhesion of the plating at the cone portion is changed in an inclined manner.
With a simple structure, the plating thickness can be changed.
【図１】本発明に係る棒状のワークを備えたシリンダユ
ニットの一例を示す図FIG. 1 is a diagram showing an example of a cylinder unit including a rod-shaped work according to the present invention.
【図２】本発明に係る棒状のワークとしてのピストンロ
ッド図FIG. 2 is a piston rod diagram as a rod-shaped work according to the present invention.
【図３】本発明に係る電気メッキ装置の断面図FIG. 3 is a sectional view of an electroplating apparatus according to the present invention.
【図４】本発明に係るマスキング治具の第１実施例断面
図FIG. 4 is a sectional view of a masking jig according to a first embodiment of the present invention.
【図５】本発明に係るマスキング治具の第２実施例断面
図FIG. 5 is a sectional view of a masking jig according to a second embodiment of the present invention.
【図６】本発明に係る電気メッキ装置の作用図FIG. 6 is an operation diagram of the electroplating apparatus according to the present invention.
【図７】本発明に係るマスキング治具の第３実施例断面
図FIG. 7 is a sectional view of a masking jig according to a third embodiment of the present invention.
【図８】本発明に係るマスキング治具の第３実施例の作
用図FIG. 8 is an operation diagram of a third embodiment of the masking jig according to the present invention.
【図９】本発明に係るマスキング治具の第４実施例断面
図FIG. 9 is a sectional view of a masking jig according to a fourth embodiment of the present invention.
【図１０】本発明に係るマスキング治具の第５実施例の
作用図FIG. 10 is an operation diagram of a fifth embodiment of a masking jig according to the present invention.
【図１１】従来のピストンロッドのメッキにおけるマス
ク説明図FIG. 11 is an explanatory view of a mask for plating a conventional piston rod.
５…ピストンロッド（ワーク）、５ｄ…ねじ部、１０…
電気メッキ装置、２０…ワーク支持機構、２１…ワーク
昇降シリンダ、３０…メッキ槽、３６…陽極、３８…陰
極受け台、４０，６０，７０…マスキング治具、４１…
凹部、４３…貫通孔、５０…治具昇降機構、５４…昇降
スクリュー、５７…昇降モータ、６１，７１…コーン
部、６２，７２…円筒部。5 ... Piston rod (work), 5d ... Thread part, 10 ...
Electroplating device, 20 ... Work support mechanism, 21 ... Work lifting cylinder, 30 ... Plating tank, 36 ... Anode, 38 ... Cathode pedestal, 40, 60, 70 ... Masking jig, 41 ...
Recesses, 43 ... Through holes, 50 ... Jig elevating mechanism, 54 ... Elevating screw, 57 ... Elevating motor, 61, 71 ... Cone section, 62, 72 ... Cylindrical section.
Claims (5)
に、ワーク支持機構で吊下げた棒状のワークを浸漬する
形式の電気メッキ装置において、この電気メッキ装置
は、メッキ槽の液中に、ワークの下部をマスクするマス
キング治具を備えたことを特徴とする電気メッキ装置。1. An electroplating apparatus of a type in which a rod-shaped work suspended by a work supporting mechanism is immersed in a plating tank filled with a plating solution, the electroplating apparatus comprising: An electroplating device characterized by comprising a masking jig for masking the lower part of the work.
介して高さ位置調整可能に取付けられていることを特徴
とする請求項１記載の電気メッキ装置。2. The electroplating apparatus according to claim 1, wherein the masking jig is attached so that a height position thereof can be adjusted via a jig lifting mechanism.
収納するための、ワークの外径より大きな凹部を備えて
いることを特徴とする請求項１又は請求項２記載の電気
メッキ装置。3. The electroplating apparatus according to claim 1, wherein the masking jig has a recess for accommodating a lower portion of the work, the recess being larger than the outer diameter of the work.
収納するための、ワークの外径より大径の貫通孔を備え
ていることを特徴とする請求項１又は請求項２記載の電
気メッキ装置。4. The electroplating according to claim 1, wherein the masking jig is provided with a through hole for accommodating a lower portion of the work and having a diameter larger than an outer diameter of the work. apparatus.
収納するための、下方へ縮径するコーン部とこのコーン
部につづく円筒部とを備え、この円筒部をワークの外径
より僅かに大径としてワークへのメッキの付着を制限
し、また、コーン部でメッキの付着量を傾斜的に変更さ
せるものであることを特徴とする請求項１又は請求項２
記載の電気メッキ装置。5. The masking jig is provided with a cone part for reducing the diameter of the work for accommodating the lower part of the work and a cylinder part following the cone part, and the cylinder part is slightly smaller than the outer diameter of the work. A large diameter is used to limit the adhesion of plating to the work, and the amount of adhesion of plating is changed in an inclined manner at the cone portion.
The described electroplating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16433095A JP3481355B2 (en) | 1995-06-29 | 1995-06-29 | Electroplating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16433095A JP3481355B2 (en) | 1995-06-29 | 1995-06-29 | Electroplating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0913191A true JPH0913191A (en) | 1997-01-14 |
| JP3481355B2 JP3481355B2 (en) | 2003-12-22 |
Family
ID=15791126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16433095A Expired - Lifetime JP3481355B2 (en) | 1995-06-29 | 1995-06-29 | Electroplating equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3481355B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006132732A (en) * | 2004-11-09 | 2006-05-25 | Akutowan:Kk | Bearing component made of resin and its manufacturing method |
| JP6282773B1 (en) * | 2017-06-30 | 2018-02-21 | 株式会社ショーワ | Masking jig, electroplating equipment |
| JP2019077941A (en) * | 2017-10-27 | 2019-05-23 | 日立オートモティブシステムズ株式会社 | Rod manufacturing method and masking tool |
-
1995
- 1995-06-29 JP JP16433095A patent/JP3481355B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006132732A (en) * | 2004-11-09 | 2006-05-25 | Akutowan:Kk | Bearing component made of resin and its manufacturing method |
| JP6282773B1 (en) * | 2017-06-30 | 2018-02-21 | 株式会社ショーワ | Masking jig, electroplating equipment |
| WO2019003459A1 (en) * | 2017-06-30 | 2019-01-03 | 株式会社ショーワ | Masking jig and electroplating apparatus |
| JP2019011497A (en) * | 2017-06-30 | 2019-01-24 | 株式会社ショーワ | Masking jig, and electroplating apparatus |
| CN110603348A (en) * | 2017-06-30 | 2019-12-20 | 株式会社昭和 | Mask jig and plating apparatus |
| CN110603348B (en) * | 2017-06-30 | 2021-07-20 | 株式会社昭和 | Mask jig and plating apparatus |
| US11155929B2 (en) | 2017-06-30 | 2021-10-26 | Showa Corporation | Masking jig and electroplating apparatus |
| JP2019077941A (en) * | 2017-10-27 | 2019-05-23 | 日立オートモティブシステムズ株式会社 | Rod manufacturing method and masking tool |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3481355B2 (en) | 2003-12-22 |
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