JP3037127B2 - Fixing jig for printing cover member for push button switch and method of manufacturing the same - Google Patents
Fixing jig for printing cover member for push button switch and method of manufacturing the sameInfo
- Publication number
- JP3037127B2 JP3037127B2 JP8009083A JP908396A JP3037127B2 JP 3037127 B2 JP3037127 B2 JP 3037127B2 JP 8009083 A JP8009083 A JP 8009083A JP 908396 A JP908396 A JP 908396A JP 3037127 B2 JP3037127 B2 JP 3037127B2
- Authority
- JP
- Japan
- Prior art keywords
- cover member
- printing
- button switch
- jig
- push button
- 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.)
- Expired - Lifetime
Links
Landscapes
- Printing Methods (AREA)
- Coating Apparatus (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、キートップ部、ド
ーム部およびベース部、あるいはキートップ部とベース
部からなる押釦スイッチ用カバー部材のキートップ部天
面または押釦スイッチ用カバー部材の裏面に、文字・記
号等の表示用印刷、特にスクリーン印刷に用いられる押
釦スイッチ用カバー部材の印刷用固定治具及びその製造
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key top portion, a dome portion and a base portion, or a top surface of a key top portion of a cover member for a push button switch comprising a key top portion and a base portion or a back surface of a cover member for a push button switch. The present invention relates to a fixing jig for printing a cover member for a push button switch used for printing for displaying characters, symbols, etc., particularly for screen printing, and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】押釦スイッチ用カバー部材（以後、単に
カバー部材という）のキートップ部天面またはカバー部
材裏面への表示用文字・記号等の印刷には、位置出し・
固定用の金型印刷用固定治具を製作し使用していた。こ
の金型印刷用固定治具の製作には、正確な位置精度、形
状をだすために金型用材料を用いて切削加工（フライス
加工、放電加工）、精密仕上げ加工を行っていた。この
ように金型印刷用固定治具は、治具といえども精密金型
の製作となんら変わるところがなく、加工に時間がかか
り、製作コストが高くついていた。2. Description of the Related Art In order to print characters and symbols for display on the top surface of a key top portion of a cover member for a push button switch (hereinafter referred to simply as a cover member) or on the back surface of the cover member, positioning and positioning are performed.
A fixing jig for fixing die printing was manufactured and used. In manufacturing the fixing jig for mold printing, cutting (milling, electric discharge machining) and precision finishing are performed using a mold material in order to obtain accurate positional accuracy and shape. As described above, the fixing jig for die printing has no difference from the production of a precision die, even though it is a jig, takes a long time for processing, and has a high production cost.
【０００３】[0003]
【発明が解決しようとする課題】また、印刷に際して
も、成形されたカバー部材に合わせて、印刷用固定治具
に微妙な修正を行う必要があり、短納期、低コストを阻
んでいた。さらに、カバー部材のキートップ部の高さが
同一でない場合には、同一高さのキートップ部ごとに印
刷用固定治具を必要とし、印刷用固定治具製作コストの
アップ、印刷工程の増加となり、カバー部材の製造コス
トのアップ要因となつていた。加えて、カバー部材のキ
ートップ部が三次元形状を有しているときは、スクリー
ン印刷時に印刷ズレ、印刷ムラなどを生じ、品質上好ま
しくなかった。Further, at the time of printing, it is necessary to delicately modify the printing fixture in accordance with the formed cover member, which hinders short delivery time and low cost. Further, when the height of the key top portion of the cover member is not the same, a printing fixture is required for each key top portion having the same height, thereby increasing the manufacturing cost of the printing fixture and increasing the printing process. Thus, the manufacturing cost of the cover member was increased. In addition, when the key top portion of the cover member has a three-dimensional shape, printing deviation or uneven printing occurs during screen printing, which is not preferable in quality.
【０００４】本発明は、このような従来の課題を解決す
るものであり、成形品の形状にかかわらず、低コスト
で、位置精度が高く品質の安定した印刷を可能とするカ
バー部材の印刷用固定治具及びその製造方法を提供する
ものである。The present invention has been made to solve the above-mentioned conventional problems, and is intended for printing a cover member capable of performing printing at a low cost, with high positional accuracy and with stable quality regardless of the shape of a molded product. A fixing jig and a method for manufacturing the same are provided.
【０００５】[0005]
【課題を解決するための手段】本発明の印刷用固定治具
は、カバー部材を印刷用固定治具に固定し、押釦スイッ
チ用カバー部材のキートップ部天面または裏面に、文字
・記号等の表示用印刷を行うための印刷用固定治具であ
って、シリコーン系樹脂またはメタル樹脂からなり、該
印刷用固定治具の押釦スイッチ用カバー部材の固定面
に、押釦スイッチ用カバー部材の印刷面と対向する面の
凹凸形状が設けられてなることを特徴とする。印刷用固
定治具の製造方法は、カバー部材の表面または表裏面に
ポリウレタン樹脂またはシリコーン系樹脂を塗布して皮
膜を形成し、皮膜形成後のカバー部材を治具成形用型内
に接着固定し、型取り用シリコーン系樹脂またはメタル
樹脂を注型してカバー部材の型取りを行い、硬化後、該
皮膜形成後のカバー部材を離型することを特徴とする。
前記皮膜の形成に先立ち、カバー部材の表面または表裏
面にプラズマを照射して表面改質を行い、プライマーを
塗布した後、ポリウレタン樹脂またはシリコーン系樹脂
の皮膜を形成してもよい。According to the present invention, there is provided a fixing jig for printing wherein a cover member is fixed to a fixing jig for printing, and characters, symbols, etc. are provided on the top surface or the back surface of a key top portion of the cover member for a push button switch. A printing jig for performing display printing according to claim 1, wherein the printing jig is made of a silicone resin or a metal resin, and the printing jig is printed on a fixing surface of the push button switch cover member of the printing jig. It is characterized in that a concave and convex shape of a surface facing the surface is provided. The manufacturing method of the fixing jig for printing is to form a film by applying a polyurethane resin or a silicone-based resin to the front surface or the front and back surfaces of the cover member, and adhesively fix the cover member after forming the film in a jig molding die. The cover member is molded by casting a silicone resin or metal resin for molding, and after curing, the cover member after the film is formed is released.
Prior to the formation of the film, the surface or the front and back surfaces of the cover member may be irradiated with plasma to perform surface modification, and after applying a primer, a film of a polyurethane resin or a silicone resin may be formed.
【０００６】[0006]
【発明の実施の形態】カバー部材のキートップ部天面ま
たはカバー部材の裏面への文字・記号等の表示印刷に用
いる本発明のカバー部材の印刷用固定治具のカバー部材
固定面には、カバー部材の印刷面と対向する面の凹凸形
状の版型が設けられており、印刷に際しては、この版型
面にカバー部材を嵌合させて行うようになっている。本
発明をさらに詳細に説明する。図１は、本発明のカバー
部材の印刷用固定治具１を示し、（ａ）はキートップ部
天面用の印刷用固定治具であり、印刷用固定治具１のカ
バー部材固定面には、カバー部材のキートップ部裏面の
ドーム部およびベース部が型取りされた複数の凸部２が
形成されている。（ｂ）はカバー部材裏面用の印刷用固
定治具であり、印刷用固定治具１のカバー部材固定面に
は、カバー部材のキートップ部が型取りされた複数の凹
部３が形成されている。BEST MODE FOR CARRYING OUT THE INVENTION The cover member fixing surface of a printing jig for a cover member according to the present invention used for display printing of characters and symbols on the top surface of the key top portion of the cover member or on the back surface of the cover member, A plate having an uneven shape on the surface facing the printing surface of the cover member is provided, and printing is performed by fitting the cover member to the plate surface. The present invention will be described in more detail. FIG. 1 shows a fixing jig 1 for printing a cover member of the present invention. FIG. 1A shows a fixing jig for printing for a top surface of a key top portion. Has a plurality of convex portions 2 formed by molding a dome portion and a base portion on the back surface of the key top portion of the cover member. (B) is a printing fixing jig for the back surface of the cover member, and a plurality of concave portions 3 in which a key top portion of the cover member is molded are formed on the cover member fixing surface of the printing fixing jig 1. I have.
【０００７】図２は、印刷に際して、印刷用固定治具１
にカバー部材４を組込む状態を示し、（ａ）は、前記キ
ートップ部天面用の印刷用固定治具１に、カバー部材４
を矢印の方向から組込む様子を示し、カバー部材４のキ
ートップ部５裏面のドーム部を凸部２に嵌合させて印刷
用固定治具１に組込み、カバー部材４のキートップ部５
の天面６に文字・記号等の所定の印刷を行うものであ
る。（ｂ）は、カバー部材裏面用の印刷用固定治具１
に、カバー部材４を矢印の方向から組込む様子を示し、
カバー部材４のキートップ部５を凹部３に嵌合させて印
刷用固定治具１に組込み、カバー部材４の裏面７に所定
の印刷を行うものである。図３には、本発明の印刷用固
定治具を用いて印刷されたカバー部材４が示されてお
り、（ａ）はキートップ部５の天面６に数字が印刷され
たカバー部材４を示し、（ｂ）はカバー部材４の裏面側
に、即ちキートップ部５の天面６に対応する裏面側の位
置に数字が印刷されたカバー部材４を示している。この
ようにしてカバー部材のキートップ部天面またはカバー
部材の裏面に文字・記号などが印刷され表示される。FIG. 2 shows a printing fixture 1 for printing.
FIG. 3A shows a state in which the cover member 4 is incorporated into the printing jig 1 for the top surface of the key top portion.
The dome part on the back surface of the key top part 5 of the cover member 4 is fitted into the convex part 2 and assembled into the printing fixture 1, and the key top part 5 of the cover member 4 is shown.
A predetermined printing of characters, symbols, etc. is performed on the top surface 6 of the printer. (B) is a printing fixture 1 for the back surface of the cover member.
Shows the state where the cover member 4 is assembled from the direction of the arrow,
The key top portion 5 of the cover member 4 is fitted into the concave portion 3 and incorporated into the printing fixture 1 to perform predetermined printing on the back surface 7 of the cover member 4. FIG. 3 shows a cover member 4 printed using the printing fixture of the present invention. FIG. 3A shows the cover member 4 on which a number is printed on the top surface 6 of the key top portion 5. 4B shows the cover member 4 on which numbers are printed on the back side of the cover member 4, that is, on the position on the back side corresponding to the top surface 6 of the key top portion 5. In this way, characters and symbols are printed and displayed on the top surface of the key top portion of the cover member or on the back surface of the cover member.
【０００８】このような構造からなる本発明の印刷用固
定治具をカバー部材のキートップ部天面またはカバー部
材の裏面へのスクリーン印刷に用いると、カバー部材は
印刷用固定治具に平滑に保持、固定され、位置決めを正
確に行うことができ、安定して精細な印刷が行える。When the printing fixture of the present invention having such a structure is used for screen printing on the top surface of the key top portion of the cover member or the back surface of the cover member, the cover member is smoothly applied to the printing fixture. It is held and fixed, positioning can be performed accurately, and stable and fine printing can be performed.
【０００９】次に、本発明の印刷用固定治具の製造方法
について詳述する。 １）カバー部材表面への皮膜形成；印刷用固定治具のカ
バー部材固定面に、カバー部材の印刷面と対向する面の
凹凸形状を同寸で複写するために、カバー部材の表面に
皮膜を形成するが、皮膜形成に先立ち、カバー部材表面
の改質を行う。カバー部材の表面改質はプラズマを照射
して行う。プラズマ照射は、低温プラズマ処理が好まし
く、プラズマ用ガスとしてＯ2 とＡr の混合ガスを用
い、２〜10分、好ましくは４〜５分照射して表面改質す
るのがよい。この後、シランカップリング剤などのプラ
イマーを塗布し、その後さらにポリウレタン樹脂または
シリコーン系のインクをスプレー、塗装機等を用いて均
一に塗布し、カバー部材の表面に厚さ50〜100 μｍのポ
リウレタン樹脂またはシリコーン系インクの皮膜を形成
する。このようにして形成された皮膜はカバー部材の表
面に強固に接着する。Next, a method for manufacturing the printing fixture of the present invention will be described in detail. 1) Formation of a film on the surface of the cover member; a film is formed on the surface of the cover member to copy the unevenness of the surface facing the printing surface of the cover member to the same size on the cover member fixing surface of the printing fixture. Before the film is formed, the surface of the cover member is modified. The surface modification of the cover member is performed by irradiating plasma. The plasma irradiation is preferably a low-temperature plasma treatment, and the surface is modified by irradiating a mixed gas of O 2 and Ar as a plasma gas for 2 to 10 minutes, preferably 4 to 5 minutes. Thereafter, a primer such as a silane coupling agent is applied, and then a polyurethane resin or a silicone-based ink is further applied evenly using a sprayer or a coating machine, etc., and a 50-100 μm-thick polyurethane is applied to the surface of the cover member. Form a film of resin or silicone-based ink. The coating thus formed firmly adheres to the surface of the cover member.
【００１０】なお、この皮膜形成は、カバー部材のキー
トップ部天面用の印刷用固定治具を製作する場合には、
カバー部材の表裏両面に皮膜を設ける。一方、カバー部
材の裏面印刷用の印刷用固定治具を製作する場合には、
カバー部材の表面側、即ちキートップ部面側にのみ皮膜
を設ける。このようにカバー部材の表面及び／または裏
面に皮膜を設けることによって、型取り用のカバー部材
を作り、印刷用固定治具の型取りの際、離型が滑らかに
なり、さらに印刷の際、印刷用固定治具へのカバー部材
の組込み、印刷後の取外し、即ち脱着が容易となる。し
かし皮膜を厚く形成しすぎると、印刷に際して、印刷用
固定治具とカバー部材とのクリアランスが大きくなり過
ぎてガタを生じ、正確な位置が出ず、印刷ズレの原因と
なる。一方、皮膜が薄すぎるとクリアランスが小さ過ぎ
て組込み、取外しが困難となり作業性が悪くなる。[0010] This film formation is carried out when a printing fixture for the top surface of the key top portion of the cover member is manufactured.
The coating is provided on both front and back surfaces of the cover member. On the other hand, when manufacturing a printing fixture for backside printing of a cover member,
The coating is provided only on the front side of the cover member, that is, on the side of the key top portion. By providing a film on the front and / or back surface of the cover member in this manner, a cover member for forming a mold is formed, and when the fixing jig for printing is formed, the mold release is smooth, and further, when printing, Incorporation of the cover member into the fixing jig for printing and removal after printing, that is, attachment and detachment become easy. However, if the film is formed too thick, the clearance between the fixing jig for printing and the cover member becomes too large during printing, causing backlash, causing an incorrect position, and causing printing misalignment. On the other hand, if the film is too thin, the clearance is too small to be incorporated, making it difficult to remove, resulting in poor workability.
【００１１】２）印刷用固定治具の型取り；先ず、キー
トップ部天面印刷用の印刷用固定治具の型取りについ
て、図４、５を用いて説明する。図４は、上記処理によ
って表裏両面に皮膜が形成されたカバー部材の一部拡大
断面図である。カバー部材８の表裏両面には、順に、プ
ラズマ処理層９、プライマー層10、ポリウレタン樹脂ま
たはシリコーン系インクの皮膜層11が形成されている。
なお、12はドーム部である。図５（ａ）、（ｂ）、
（ｃ）に、印刷用固定治具の型取り工程を示す。2) Molding of a fixing jig for printing; First, molding of a fixing jig for printing for printing the top surface of the key top portion will be described with reference to FIGS. FIG. 4 is a partially enlarged cross-sectional view of a cover member having a film formed on both front and back surfaces by the above-described processing. On both front and back surfaces of the cover member 8, a plasma treatment layer 9, a primer layer 10, and a coating layer 11 of a polyurethane resin or a silicone-based ink are formed in this order.
In addition, 12 is a dome part. 5 (a), (b),
(C) shows a molding process of the fixing jig for printing.
【００１２】先ず、図５の（ａ）に示すように、治具成
形ベース台13上に両面接着テープ14を貼り（または接着
剤を塗布して）、その上にカバー部材８のキートップ部
天面６を接着し固定する。このとき、キートップ部天面
６が治具成形ベース台13に確実に均一に接着し固定する
ため、カバー部材８全体をムラなく押えつけられるよう
に、カバー部材８に発泡ポリウレタンなどのスポンジ15
を載せ、その上からカバー部材８全体を均一に動かない
程度に押圧する。First, as shown in FIG. 5A, a double-sided adhesive tape 14 is applied (or an adhesive is applied) on a jig molding base 13 and a key top portion of the cover member 8 is placed thereon. The top surface 6 is adhered and fixed. At this time, a sponge 15 made of foamed polyurethane or the like is attached to the cover member 8 so that the entire top of the cover member 8 can be pressed evenly so that the top surface 6 of the key top portion 6 is securely and uniformly adhered and fixed to the jig molding base table 13.
And press the cover member 8 from above so that it does not move uniformly.
【００１３】次に、キートップ部が治具成形ベース台13
に接着、固定された後、同図（ｂ）に示すように、治具
成形ベース台13上に型枠16をセットし、型取り用樹脂1
7、例えばシリコーンRTV を型枠16内に静かに十分な量
（治具成形ベース台13と型枠16とによって形成される成
形用型18の体積の約２割り増しの量）ポット19より注型
し、同図（ｃ）において、押え蓋20をかぶせて型取り用
樹脂17を硬化させる。押え蓋20で押圧することによって
十分な量注型された型取り用樹脂17はカバー部材８の細
部にまで行き渡り、余分な樹脂は型枠16のフロー用溝
（図示を省略）から排出される。型取り用樹脂17が十分
硬化した後、押え蓋20、型枠16、治具成形ベース台13を
それぞれ取りはずし、不必要な余肉部分を切除し、カバ
ー部材８を取り出す。このときカバー部材８は、表面に
設けられたポリウレタン樹脂の皮膜によって型取り用樹
脂17から容易に剥離し、取り出すことができる。そして
注型された樹脂面に、カバー部材の裏面側、即ちキート
ップ部裏面のドーム部12側の凹凸形状が完全に同寸で複
製されたキートップ部天面印刷用の印刷用固定治具が得
られる。Next, the key top portion is mounted on the jig molding base table 13.
After that, the mold 16 is set on the jig molding base table 13 as shown in FIG.
7. For example, a silicone RTV is gently poured into the mold 16 from the pot 19 in a sufficient amount (about 20% of the volume of the mold 18 formed by the jig molding base 13 and the mold 16). Then, as shown in FIG. 3C, the molding resin 17 is cured by covering the pressing lid 20. By pressing with the holding lid 20, a sufficient amount of the molding resin 17 cast into the cover member 8 spreads to the details of the cover member 8, and excess resin is discharged from a flow groove (not shown) of the mold frame 16. . After the molding resin 17 has sufficiently hardened, the presser lid 20, the mold frame 16, and the jig molding base table 13 are removed, unnecessary unnecessary portions are cut off, and the cover member 8 is taken out. At this time, the cover member 8 can be easily peeled off and removed from the molding resin 17 by the polyurethane resin film provided on the surface. Then, on the cast resin surface, the concave / convex shape of the back side of the cover member, that is, the dome portion 12 side on the back surface of the key top portion, is completely fixed to the same size, and the printing fixture for top printing of the key top portion is printed. Is obtained.
【００１４】このようにして得られたキートップ部天面
用の印刷用固定治具を用いて、カバー部材のキートップ
部天面に印刷するには、印刷用固定治具を治具固定板に
接着固定し、被印刷カバー部材のキートップ部の高さが
低い場合（約５mm以下）には、このまま一般的なスクリ
ーン印刷機で印刷すればよい。キートップ部の高さが高
い場合（約５mm以上）、印刷時にキートップ部がズレな
いように、印刷用固定治具に合う上蓋をかぶせて同様に
印刷機で印刷すればよく、精度良い印刷ができる。In order to print on the top surface of the key top portion of the cover member using the printing fixture for the top surface of the key top portion thus obtained, the printing fixture is fixed to the jig fixing plate. When the height of the key top portion of the cover member to be printed is low (about 5 mm or less), printing may be performed with a general screen printing machine as it is. If the height of the key top part is high (about 5 mm or more), it is sufficient to cover the top lid that matches the fixing jig for printing so that the key top part does not shift during printing, and then print with a printing machine as well. Can be.
【００１５】次に、カバー部材裏面印刷用の印刷用固定
治具の型取りについて、図６、７を用いて説明する。図
６は、先の処理によってカバー部材の表面側に皮膜が形
成されたカバー部材の一部拡大断面図であり、キートッ
プ部５の表面を覆って皮膜層11が設けられている。図７
（ａ）、（ｂ）、（ｃ）は、印刷用固定治具の型取り工
程を示す図である。Next, the molding of a printing fixture for printing the back surface of the cover member will be described with reference to FIGS. FIG. 6 is a partially enlarged cross-sectional view of the cover member in which a film is formed on the front surface side of the cover member by the above-described processing, and a film layer 11 is provided so as to cover the surface of the key top portion 5. FIG.
(A), (b), (c) is a figure which shows the molding process of a printing fixture.
【００１６】先ず、図７の（ａ）に示すように、治具成
形ベース台13上に両面接着テープ14を貼り（または接着
剤を塗布して）、その上にカバー部材８をその平坦な裏
面７を接着し固定する。このとき、治具成形ベース台13
上に確実かつ均一に接着し固定するため、カバー部材８
全体をムラなく押えつけられるように、カバー部材８に
スポンジ15を載せ、その上からカバー部材８全体を均一
に動かない程度に押圧する。以後は、上記キートップ部
天面印刷用の印刷用固定治具の型取りの場合と同様に、
治具成形ベース台13上に型枠16をセットし、型取り用樹
脂17を型枠16内に静かに十分量注型し（図７（ｂ）参
照）、押え蓋20をかぶせて押圧した後、型取り用樹脂17
を硬化させる（図７（ｃ）参照）。形取り用樹脂17が十
分硬化した後、押え蓋20、型枠16、治具成形ベース台13
をそれぞれ取りはずし、不必要な余肉部分を切除し、カ
バー部材８を取り出す。そして注型された樹脂面に、カ
バー部材の表面側、即ちキートップ部５側の凹凸形状が
完全に同寸で複製されたカバー部材裏面印刷用の印刷用
固定治具が得られる。First, as shown in FIG. 7 (a), a double-sided adhesive tape 14 is applied (or an adhesive is applied) on a jig molding base table 13, and a cover member 8 is placed on the flat adhesive tape 14. The back surface 7 is bonded and fixed. At this time, the jig molding base table 13
The cover member 8 is used to securely and uniformly adhere and fix the
The sponge 15 is placed on the cover member 8 so that the whole can be pressed evenly, and the entire cover member 8 is pressed from above onto the cover member 8 so as not to move uniformly. After that, in the same way as the above-mentioned case of printing fixture for key top part top surface printing,
The mold 16 was set on the jig molding base 13, and the molding resin 17 was gently poured into the mold 16 in a sufficient amount (see FIG. 7 (b)), and pressed with the presser lid 20. Later, molding resin 17
Is cured (see FIG. 7C). After the molding resin 17 has hardened sufficiently, the presser lid 20, the mold 16, the jig molding base 13
Are removed, unnecessary unnecessary portions are cut off, and the cover member 8 is taken out. Then, a fixing jig for printing the back surface of the cover member is obtained in which the concave and convex shape of the front surface side of the cover member, that is, the key top portion 5 side is duplicated to the same size on the cast resin surface.
【００１７】このカバー部材天面用の印刷用固定治具を
用いて、カバー部材のキートップ部天面に印刷するに
は、この印刷用固定治具のキートップ部裏面のドーム部
が同寸で複製された凸部に、被印刷体のカバー部材のド
ーム部を嵌合して、キートップ部天面にスクリーン印刷
機等を用いて印刷する。また、カバー部材裏面印刷用の
印刷用固定治具を用いて、カバー部材の裏面に印刷する
には、この印刷用固定治具のキートップ部が同寸で複製
された凹部に、被印刷体のカバー部材のキートップ部を
嵌合して、カバー部材の裏面にスクリーン印刷機等を用
いて印刷する。かくして位置ズレのない精度の良い印刷
ができる。In order to print on the top surface of the key top portion of the cover member using the printing fixture for the top surface of the cover member, the dome portion on the back surface of the key top portion of the printing fixture has the same size. The dome portion of the cover member of the printing medium is fitted to the convex portion duplicated in the above, and printing is performed on the top surface of the key top portion using a screen printing machine or the like. Further, in order to print on the back surface of the cover member by using a printing fixture for printing the back surface of the cover member, the key top portion of the printing fixture is printed in a concave portion duplicated to the same size. The key top portion of the cover member is fitted, and printing is performed on the back surface of the cover member using a screen printing machine or the like. Thus, accurate printing without displacement can be performed.
【００１８】印刷用固定治具成形材料として、シリコー
ン系樹脂を使用する場合は、型取り用カバー部材表面の
皮膜形成にポリウレタン樹脂を用い、収縮率が0.05〜
1.0％、好ましくは0.08〜 0.8％で、ゴム硬度が30〜90
°Ｈ、好ましくは50〜 80 °Ｈである型取り用シリコー
ンRTV を用いる。メタル樹脂を使用する場合は、カバー
部材表面の皮膜形成にシリコーン系インクを用い、シリ
コーンRTV と同程度の低い収縮率で、ロックウェル硬度
が90〜100 程度の型取り用メタル樹脂を用いる。印刷用
固定治具の成形方法は、型取り用シリコーンRTV と同様
である。When a silicone resin is used as the molding material for the fixing jig for printing, a polyurethane resin is used for forming a film on the surface of the mold cover member, and the shrinkage ratio is 0.05 to
1.0%, preferably 0.08-0.8%, rubber hardness 30-90
Use a silicone RTV for molding, which is at a temperature of 50.degree. When a metal resin is used, a silicone-based ink is used to form a film on the surface of the cover member, and a molding metal resin having a Rockwell hardness of about 90 to 100 with a low shrinkage similar to that of the silicone RTV is used. The method of forming the fixing jig for printing is the same as that of the silicone RTV for molding.
【００１９】メタル樹脂としては、ポリカーボネート、
アクリル、塩化ビニルなどに金属粉（鉄粉あるいはAl粉
等）を混入させたものを使用することができるが、収縮
性、機械加工性、耐薬品性等を考慮すると常温硬化型エ
ポキシ樹脂に金属粉を混入させたものがよい。この型取
り用シリコーンRTV またはメタル系樹脂の粘度は、成形
型の細部にまで確実かつ短時間に樹脂を行き渡らせるた
めに、 300〜2000ポアズが好ましい。特には 500〜2000
ポアズであり、作業性が良く表面が綺麗に仕上がる。 3
00ポアズ未満では、治具成形ベース台と型枠、型枠と押
さえ蓋の隙間に流れ込み、余分な薄いバリができやす
く、バリ取りをしないと印刷面の平行度が取りずらく、
安定した印刷がしずらい。また、2000ポアズを超える
と、樹脂材料が流れにくく、成形型の細部にまで注入樹
脂を行き渡らせることができず、いわゆる一般に言う”
巣”ができ易い。As the metal resin, polycarbonate,
A mixture of metal powder (iron powder, Al powder, etc.) mixed with acrylic, vinyl chloride, etc. can be used, but in consideration of shrinkage, machinability, chemical resistance, etc. It is better to mix powder. The viscosity of the silicone RTV or metal resin for molding is preferably 300 to 2,000 poise in order to spread the resin to the details of the mold in a short time. Especially 500-2000
Poise with good workability and beautiful surface finish. Three
If it is less than 00 poise, it flows into the gap between the jig molding base and the mold, the gap between the mold and the holding lid, and extra thin burrs are easily formed, and if the burrs are not removed, the parallelism of the printing surface is difficult to obtain.
Stable printing is difficult. In addition, if it exceeds 2,000 poise, the resin material is difficult to flow, and the injected resin cannot be spread to the details of the molding die.
A nest is easily formed.
【００２０】[0020]
［実施例１］本実施例においては、キートップ部天面用
の印刷用固定治具の製作について説明する。ドーム部を
有するカバー部材の表裏両面に、Ｏ2 、Ａｒ混合ガスを
用いて低温プラズマ処理を４分間行い、プラズマ処理層
を設けた後、KBM-403 （信越化学工業社製、商品名）50
重量部にトルエン50重量部を配合し、スプレーガンにて
カバー部材の表裏両面に塗布し、風乾してプライマー層
を設けた。さらに、ダイプラコートソフトSO-1501 （大
日精化工業社製、商品名）100 重量部に対して、硬化剤
ダイプラコートEN-2（大日精化工業社製、商品名）を15
重量部配合してスプレーガンにて表裏両面に塗布し、15
0 ℃で30分間乾燥し皮膜を設けた。このようにして形成
された皮膜（ウレタン樹脂層）の厚さは70μｍである。[Embodiment 1] In this embodiment, the manufacture of a printing fixture for a top surface of a key top portion will be described. After performing low-temperature plasma treatment for 4 minutes using a mixed gas of O 2 and Ar on the front and back surfaces of the cover member having a dome portion to provide a plasma treatment layer, KBM-403 (Shin-Etsu Chemical Co., Ltd., trade name) 50
Toluene was mixed with 50 parts by weight of toluene, applied to the front and back surfaces of the cover member with a spray gun, and air-dried to provide a primer layer. Furthermore, for 100 parts by weight of Daipla Coat SO-1501 (Dainichi Kagaku Kogyo Co., Ltd.), 15 parts of hardener Daipla Coat EN-2 (Dainichi Kagaku Kogyo Co., Ltd., trade name)
Mix by weight and apply on both sides with a spray gun.
The film was dried at 0 ° C. for 30 minutes to form a film. The thickness of the coating (urethane resin layer) thus formed is 70 μm.
【００２１】この表面に皮膜が形成されたカバー部材
を、そのキートップ部天面を治具成形ベース台上に両面
接着テープで接着し固定した。この上から発泡ポリウレ
タン製のスポンジを載せ、カバー部材全体を均一に動か
ない程度に押圧し、確実かつ均一に固定した。次に、治
具成形ベース台上に型枠をセットし、この型枠内に、型
取り用シリコーンRTV 、KE-1600 （信越化学工業社製、
商品名）100 重量部に対して、硬化剤Cat-1600（信越化
学工業社製、商品名）を10重量部配合し、真空脱泡を十
分に行った後、カバー部材のドーム部側から静かに十分
な量注型した。その後押え蓋をかぶせ、プレス機で徐々
に加圧して余分な樹脂を型枠外に押し出し、常温下で12
時間放置し、樹脂を硬化させた。硬化後、押え蓋、型
枠、治具成形ベース台をそれぞれ取りはずし、不必要な
余肉部分を切除し、カバー部材を剥すと、印刷用固定治
具のカバー部材固定面に、キートップ部裏面のドーム部
側の凹凸形状が完全に同寸で複製されたキートップ部天
面印刷用の印刷用固定治具が得られた。硬化した樹脂か
らのカバー部材の剥離は、カバー部材表面のウレタン樹
脂層によって滑らか、かつ容易であった。The cover member having a film formed on its surface was fixed by bonding the top surface of the key top portion to a jig-forming base table with a double-sided adhesive tape. A foamed polyurethane sponge was placed from above, and the entire cover member was pressed to such an extent that it did not move evenly, and was fixed securely and uniformly. Next, a mold is set on a jig molding base, and a silicone RTV for molding, KE-1600 (manufactured by Shin-Etsu Chemical Co., Ltd.,
10 parts by weight of a curing agent Cat-1600 (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) is blended with 100 parts by weight of the product, and after sufficient vacuum defoaming, it is quiet from the dome side of the cover member. A sufficient amount was cast. After that, cover with the presser cover, and gradually pressurize with a press machine to push out the excess resin out of the formwork.
The resin was cured by standing for a time. After curing, remove the presser lid, formwork, and jig molding base stand, cut off unnecessary excess portions, and peel off the cover member. As a result, a printing jig for printing the top surface of the key top portion was obtained, in which the concave and convex shape on the dome portion side was completely duplicated. Peeling of the cover member from the cured resin was smooth and easy due to the urethane resin layer on the surface of the cover member.
【００２２】このキートップ部天面印刷用の印刷用固定
治具を、スクリーン印刷機のテーブルの治具固定盤に固
定し、印刷用固定治具に被印刷カバー部材のドーム部側
の面を装着して、キートップ部天面に文字・記号が精度
良くスクリーン印刷された。The fixing jig for printing the top surface of the key top portion is fixed to a jig fixing plate of a table of a screen printing machine, and the surface of the cover member to be printed on the dome side is fixed to the fixing jig for printing. When attached, characters and symbols were screen-printed on the top of the key top with high accuracy.
【００２３】［実施例２］本実施例においては、カバー
部材裏面印刷用の印刷用固定治具の製作について説明す
る。カバー部材のキートップ部表面側に、シリコーン系
塗料シルマーク（信越化学工業社製、商品名）を、スプ
レーガンにて塗布し、200 ℃で30分間加熱し、硬化し
た。形成された皮膜（シリコーン系塗料）の厚さは100
μｍであった。このキートップ部表面側に皮膜が形成さ
れたカバー部材を、その裏面を治具成形ベース台上に両
面接着テープで接着し固定した。この上から発泡ポリウ
レタン製のスポンジを載せ、カバー部材全体を均一に動
かない程度に押圧し、カバー部材の裏面全体をベース台
に確実かつ均一に接着し固定した。次に、治具成形ベー
ス台上に型枠をセットし、この型枠内に、型取り用メタ
ル樹脂ポップメタルAL（国際ケミカル社製、商品名）10
0 重量部に対して、ポップメタル用硬化剤（国際ケミカ
ル社製、商品名）を10重量部配合し、カバー部材のキー
トップ部表面側から静かに十分な量注型した。その後押
え蓋をかぶせ、プレス機で徐々に加圧して余分な樹脂を
型枠外に押し出し、常温下で2 時間放置し、型取り用メ
タル樹脂を硬化させた。硬化後、押え蓋、型枠、治具成
形ベース台をそれぞれ取りはずし、カバー部材を剥す
と、印刷用固定治具のカバー部材固定面に、キートップ
部の凹凸形状が完全に同寸で複製されたカバー部材裏面
印刷用の印刷用固定治具が得られた。[Embodiment 2] In this embodiment, the manufacture of a printing fixture for printing the back surface of a cover member will be described. A silicone paint SILMARK (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) was applied on the surface side of the key top portion of the cover member with a spray gun, and heated at 200 ° C. for 30 minutes to cure. The thickness of the formed film (silicone paint) is 100
μm. The cover member having the film formed on the surface side of the key top portion was bonded and fixed to the jig molding base with a double-sided adhesive tape on the back surface. A foamed polyurethane sponge was placed from above, and the entire cover member was pressed so as not to move uniformly, and the entire back surface of the cover member was securely and uniformly adhered and fixed to the base table. Next, a mold is set on the jig molding base, and a metal resin for molding, Pop Metal AL (trade name, manufactured by Kokusai Chemical Co., Ltd.) 10
10 parts by weight of a hardening agent for pop metal (trade name, manufactured by Kokusai Chemical Co., Ltd.) was added to 0 parts by weight, and a sufficient amount was gently poured from the surface of the key top portion of the cover member. Thereafter, a cover was put on, and excess resin was extruded out of the mold by gradually pressing with a press machine, and left at room temperature for 2 hours to cure the metal resin for molding. After curing, remove the presser lid, formwork, and jig molding base, and peel off the cover member.The uneven shape of the key top part is duplicated to the same size on the cover member fixing surface of the printing fixture. Thus, a printing fixture for printing the back surface of the cover member was obtained.
【００２４】このカバー部材裏面印刷用の印刷用固定治
具を、スクリーン印刷機のテーブルの治具固定盤に固定
し、印刷用固定治具に被印刷カバー部材のキートップ部
を装着して、カバー部材裏面のキートップ部天面に対応
する位置に、文字・記号が精度良くスクリーン印刷され
た。The printing jig for printing the back surface of the cover member is fixed to a jig fixing plate of a table of a screen printing machine, and the key top portion of the cover member to be printed is mounted on the fixing jig for printing. Characters and symbols were screen-printed with high precision at positions corresponding to the top surface of the key top portion on the back surface of the cover member.
【００２５】[0025]
【発明の効果】このような構造からなる本発明の印刷用
固定治具を、カバー部材のキートップ部天面またはカバ
ー部材裏面へのスクリーン印刷に際して用いると、印刷
用固定治具にはカバー部材の印刷面と対向する面の凹凸
形状が正確に同寸で複製されているため、カバー部材は
印刷用固定治具に容易かつ正確に嵌合して平滑に保持、
固定され、位置決めを正確に行うことができ、印刷ズレ
や印刷ムラが起こらず安定して精細な印刷が行える。本
発明の印刷用固定治具は、型取り用樹脂にシリコーンRT
V あるいはメタル樹脂を用いることにより、短時間かつ
低コストで精度の高い印刷用固定治具が、特殊な工具を
用いずに比較的簡単に造ることができ、短納期で少量生
産の印刷物には特に有効である。When the fixing jig for printing of the present invention having such a structure is used for screen printing on the top surface of the key top portion of the cover member or on the back surface of the cover member, the fixing jig for printing may include the cover member. Since the uneven shape of the surface facing the printing surface is exactly the same size, the cover member can be easily and accurately fitted to the printing fixture and held smoothly.
It is fixed and can be accurately positioned, and stable and fine printing can be performed without causing printing displacement and printing unevenness. The fixing jig for printing according to the present invention uses silicone RT as a molding resin.
By using V or metal resin, a high-precision printing jig can be manufactured relatively easily without using special tools in a short time, at low cost, Especially effective.
【図１】本発明の印刷用固定治具を示す斜視図で、
（ａ）はキートップ部天面用の印刷用固定治具、（ｂ）
はカバー部材裏面用の印刷用固定治具である。FIG. 1 is a perspective view showing a printing fixture of the present invention;
(A) is a fixing jig for printing for the top of the key top portion, (b)
Denotes a printing fixture for the back surface of the cover member.
【図２】印刷に際して、印刷用固定治具にカバー部材を
組込む状態を示す斜視図で、（ａ）は前記キートップ部
天面用の印刷用固定治具へのカバー部材の組込み状態、
（ｂ）はカバー部材裏面用の印刷用固定治具へのカバー
部材の組込み状態である。FIGS. 2A and 2B are perspective views showing a state in which a cover member is assembled into a printing fixture during printing, and FIG. 2A is a state in which the cover member is assembled into a printing fixture for the key top top surface;
(B) shows a state where the cover member is assembled into a printing fixture for the back surface of the cover member.
【図３】本発明の印刷用固定治具を用いて印刷されたカ
バー部材を示す斜視図で、（ａ）はキートップ部天面に
数字が印刷されたカバー部材、（ｂ）はカバー部材裏面
のキートップ部に対応する位置に数字が印刷されたカバ
ー部材である。FIGS. 3A and 3B are perspective views showing a cover member printed using the printing fixing jig of the present invention, wherein FIG. 3A is a cover member having a number printed on a top surface of a key top portion, and FIG. This is a cover member in which a number is printed at a position corresponding to the key top portion on the back surface.
【図４】キートップ部天面用の印刷用固定治具の型取り
に使用するカバー部材の一部拡大断面図である。FIG. 4 is a partially enlarged cross-sectional view of a cover member used for molding a fixing jig for printing for the top surface of the key top portion.
【図５】キートップ部天面用の印刷用固定治具の型取り
を示す断面説明図であり、（ａ）、（ｂ）、（ｃ）は、
その型取り工程を示す。5A and 5B are cross-sectional explanatory views showing the molding of a printing jig for a top surface of a key top portion, wherein FIGS.
The molding process will be described.
【図６】カバー部材裏面用の印刷用固定治具の型取りに
使用するカバー部材の一部拡大断面図である。FIG. 6 is a partially enlarged sectional view of a cover member used for molding a fixing jig for printing for the back surface of the cover member.
【図７】カバー部材裏面用の印刷用固定治具の型取りを
示す断面説明図であり、（ａ）、（ｂ）、（ｃ）は、そ
の型取り工程を示す。FIGS. 7A to 7C are cross-sectional explanatory views showing the molding of the printing fixture for the back surface of the cover member, and FIGS. 7A, 7B, and 7C show the molding process;
１．・・・・・・印刷用固定治具、 ２．・・・・・・凸部、 ３．・・・・・・凹部、 ４．・・・・・・カバー部材、 ５．・・・・・・キートップ部、 ６．・・・・・・キートップ部天面、 ７．・・・・・・裏面、 ８．・・・・・・カバー部材、 ９．・・・・・・プラズマ処理層、 10．・・・・・・プライマー層、 11．・・・・・・皮膜層、 12．・・・・・・ドーム部、 13．・・・・・・治具成形ベース台、 14．・・・・・・両面接着テープ、 15．・・・・・・スポンジ、 16．・・・・・・型枠、 17．・・・・・・型取り用樹脂、 18．・・・・・・成形用型、 19．・・・・・・ポット、 20．・・・・・・押え蓋、 1. ... Fixing jig for printing ... Convex parts, ... Recesses; ..... cover member; ..... key top part, 6. ..... Top surface of key top part.・ ・ ・ ・ ・ ・ Back side, 8． ..... cover member, .... Plasma treatment layer, 10・ ・ ・ ・ ・ ・ Primer layer, 11．・ ・ ・ ・ ・ ・ Film layer, 12． ······ Dome section・ ・ ・ ・ ・ ・ Jig molding base stand, 14．・ ・ ・ ・ ・ ・ Double-sided adhesive tape, 15． ... sponge, 16. .... formwork 17.・ ・ ・ ・ ・ ・ Resin for molding, 18．・ ・ ・ ・ ・ ・ Molding mold, 19． .... pot, 20.・ ・ ・ ・ ・ ・ Presser lid,
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ２９Ｋ 105:16 Ｂ２９Ｌ 31:00 (56)参考文献 特開 平６−64147（ＪＰ，Ａ) 特開 平４−18353（ＪＰ，Ａ) 特開 平６−181021（ＪＰ，Ａ) 特開 平１−232619（ＪＰ，Ａ) 特開 平５−293833（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 39/02 - 39/12 B29C 39/22 - 39/34 B41F 17/14,17/34 B41M 1/40 B05C 13/00 ──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. 7 Identification symbol FI B29K 105: 16 B29L 31:00 (56) References JP-A-6-64147 (JP, A) JP-A-4-18353 (JP) JP-A 6-181021 (JP, A) JP-A 1-232619 (JP, A) JP-A 5-293833 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB B29C 39/02-39/12 B29C 39/22-39/34 B41F 17 / 14,17 / 34 B41M 1/40 B05C 13/00
Claims (3)
治具に固定し、押釦スイッチ用カバー部材のキートップ
部天面または裏面に、文字・記号等の表示用印刷を行う
ための印刷用固定治具であって、シリコーン系樹脂また
はメタル樹脂からなり、印刷用固定治具の押釦スイッチ
用カバー部材を固定する面に、押釦スイッチ用カバー部
材の印刷面と対向する面の凹凸形状が設けられてなるこ
とを特徴とする押釦スイッチ用カバー部材の印刷用固定
治具。1. A cover for a push-button switch is fixed to a fixing jig for printing, and a fixing for printing for displaying characters, symbols, etc. on a top or a back of a key top portion of the cover for a push-button switch. A jig made of a silicone resin or a metal resin, and a surface for fixing the cover member for the push button switch of the fixing jig for printing is provided with an uneven shape on a surface facing the printing surface of the cover member for the push button switch. A fixing jig for printing a cover member for a push button switch.
表裏面にポリウレタン樹脂またはシリコーン系樹脂を塗
布して皮膜を形成し、その後この押釦スイッチ用カバー
部材を治具成形用型内に接着固定し、型取り用シリコー
ン系樹脂またはメタル樹脂を注型して押釦スイッチ用カ
バー部材の型取りを行い、硬化後、押釦スイッチ用カバ
ー部材を離型することを特徴とする押釦スイッチ用カバ
ー部材の印刷用固定治具の製造方法。2. A film is formed by applying a polyurethane resin or a silicone resin on the front surface or the front and back surfaces of the push button switch cover member, and thereafter, the push button switch cover member is adhesively fixed in a jig molding die. Casting a silicone resin or metal resin for molding, molding the cover member for the push button switch, releasing the cover member for the push button switch after curing, and printing the cover member for the push button switch. Manufacturing method of fixing jig.
カバー部材の表面または表裏面にプラズマを照射して表
面改質を行い、プライマーを塗布した後、ポリウレタン
樹脂またはシリコーン系樹脂の皮膜を形成することを特
徴とする請求項２に記載の押釦スイッチ用カバー部材の
印刷用固定治具の製造方法。3. Prior to the formation of the film, the surface or front and rear surfaces of the cover member for the push button switch are irradiated with plasma to perform surface modification, and after applying a primer, a film of a polyurethane resin or a silicone resin is formed. The method for manufacturing a fixing jig for printing a cover member for a push button switch according to claim 2, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8009083A JP3037127B2 (en) | 1996-01-23 | 1996-01-23 | Fixing jig for printing cover member for push button switch and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8009083A JP3037127B2 (en) | 1996-01-23 | 1996-01-23 | Fixing jig for printing cover member for push button switch and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09192579A JPH09192579A (en) | 1997-07-29 |
| JP3037127B2 true JP3037127B2 (en) | 2000-04-24 |
Family
ID=11710729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8009083A Expired - Lifetime JP3037127B2 (en) | 1996-01-23 | 1996-01-23 | Fixing jig for printing cover member for push button switch and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3037127B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6902219B2 (en) * | 2017-01-26 | 2021-07-14 | Smk株式会社 | Printed matter and screen printing method |
-
1996
- 1996-01-23 JP JP8009083A patent/JP3037127B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09192579A (en) | 1997-07-29 |
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