JPH03193347A - Structure of squeegee holder for printer - Google Patents
Structure of squeegee holder for printerInfo
- Publication number
- JPH03193347A JPH03193347A JP33113789A JP33113789A JPH03193347A JP H03193347 A JPH03193347 A JP H03193347A JP 33113789 A JP33113789 A JP 33113789A JP 33113789 A JP33113789 A JP 33113789A JP H03193347 A JPH03193347 A JP H03193347A
- Authority
- JP
- Japan
- Prior art keywords
- printing
- solder paste
- squeegee
- printing plate
- medium
- 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.)
- Pending
Links
- 239000013013 elastic material Substances 0.000 claims description 4
- 229910000679 solder Inorganic materials 0.000 abstract description 43
- 239000000463 material Substances 0.000 abstract description 29
- 239000002904 solvent Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000005476 soldering Methods 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- AZUYLZMQTIKGSC-UHFFFAOYSA-N 1-[6-[4-(5-chloro-6-methyl-1H-indazol-4-yl)-5-methyl-3-(1-methylindazol-5-yl)pyrazol-1-yl]-2-azaspiro[3.3]heptan-2-yl]prop-2-en-1-one Chemical compound ClC=1C(=C2C=NNC2=CC=1C)C=1C(=NN(C=1C)C1CC2(CN(C2)C(C=C)=O)C1)C=1C=C2C=NN(C2=CC=1)C AZUYLZMQTIKGSC-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1216—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns by screen printing or stencil printing
Landscapes
- Screen Printers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ペースト状の印刷媒体をプリント基板等の被
印刷媒体に印刷する印刷装置における、前記印刷媒体を
被印刷媒体面に印刷するためのスキージホルダの構造に
関するものである。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a printing device for printing a paste-like printing medium onto a printing medium such as a printed circuit board, for printing the printing medium on the surface of the printing medium. This relates to the structure of the squeegee holder.
第７図は従来の印刷装置におけるスキージホルダ構造を
示す側面図である。FIG. 7 is a side view showing a squeegee holder structure in a conventional printing device.
図においてｌａ、ｌｂは２本で一対のスキージホルダで
、このスキージホルダｌａ、ｌｂはそれぞれ所定の間隔
で平行に設けられており、それぞれ独立して上下方向に
移動可能とすると共に、後述する印刷ステージに沿って
水平方向に一体となってスライド移動する構造となって
いる。In the figure, squeegee holders la and lb are a pair of squeegee holders, and these squeegee holders la and lb are each provided in parallel at a predetermined interval, and are movable in the vertical direction independently. It has a structure that allows it to slide horizontally along the stage.
２ａ、２ｂはこのスキージホルダ１の下端に取りつけら
れたゴムまたは革等の弾性材から成るスキージ、３はこ
のスキージ２ａ、２ｂと直接接触する印刷用版材であり
、後述する印刷媒体を被印刷媒体面上に供給するための
孔を所定の箇所に複数有している薄板材やあるいはメツ
シュ張りのスクリーン版より成っている。2a and 2b are squeegees made of an elastic material such as rubber or leather attached to the lower end of the squeegee holder 1; 3 is a printing plate material that comes into direct contact with the squeegees 2a and 2b; It is made of a thin plate material or a mesh screen plate having a plurality of holes at predetermined locations for supplying the medium onto the surface of the medium.
４はこの印刷用版材３の下側に重ねられて、実際に印刷
が行なわれるたとえばプリント基板等の被印刷媒体とし
ての印刷版であり、この印刷版４は平滑面を有する薄板
材で成っている。Reference numeral 4 denotes a printing plate which is placed under the printing plate material 3 and serves as a printing medium such as a printed circuit board on which printing is actually performed, and this printing plate 4 is made of a thin plate material having a smooth surface. ing.
５は前記印刷版４を水平に倒した状態で載置するための
印刷ステージ、６は揮発性のある溶媒によりペースト状
としたインクや半田等の印刷媒体としての半田ペースト
である。Reference numeral 5 indicates a printing stage on which the printing plate 4 is placed horizontally, and reference numeral 6 indicates a solder paste as a printing medium such as ink or solder made into a paste using a volatile solvent.
このような構造により、被印刷媒体の印刷版４面に半田
ペースト６を印刷する場合は、まず印刷装置の印刷ステ
ージ５上に、印刷版４を印刷面が上面となるよう寝かせ
るようにして載置する。さらにこの印刷版４の上に所定
の位置合ゎせをして印刷用版材３を重ね合わせる。With this structure, when printing the solder paste 6 on the four sides of the printing plate of the printing medium, first place the printing plate 4 on the printing stage 5 of the printing device with the printing side facing up. place Further, the printing plate material 3 is placed on top of the printing plate 4 in a predetermined position.
次に、この印刷用版材３の上面に所定量の半田ペースト
６を機械的手段あるいは手動により、１カ所あるいは数
箇所に盛り上げるようにして供給する。Next, a predetermined amount of solder paste 6 is supplied onto the upper surface of the printing plate material 3 by mechanical means or manually so as to be heaped up at one or several locations.
半田ペースト６が供給された直後に、前記スキージホル
ダｌａ、ｌｂのうち印刷時に移動する印刷方向に対して
後方に位置する一方のスキージホルダ、例えばスライド
移動方向が図中矢印Ａ方向であれば１ａのみを、Ｂ方向
であれば１ｂのみを印刷用版材３方向に下降させ、該印
刷用版材３面上に一定の加圧力により下端のスキージ２
ａを圧接させる。Immediately after the solder paste 6 is supplied, one of the squeegee holders la and lb located at the rear with respect to the printing direction in which it moves during printing, for example 1a if the sliding direction is in the direction of arrow A in the figure. If it is the direction B, then only 1b is lowered in the direction of the printing plate 3, and the squeegee 2 at the lower end is applied to the surface of the printing plate 3 with a constant pressure.
Press a.
この状態で両スキージホルダｌａ、ｌｂを所定の印刷方
向、図においてはたとえば矢印Ａ方向にスライド移動開
始する。In this state, both squeegee holders la and lb start sliding in a predetermined printing direction, for example in the direction of arrow A in the figure.
スライド移動することで、スキージ２ａにより印刷用版
材３面を慴擦して印刷用版材３上に供給された半田ペー
スト６を押し広げ、印刷用版材３の複数の孔あるいはメ
ツシュ張の隙間から半田ペースト６を下面側に抜は出さ
せ、該印刷用版材３の下側に重ね合わせた印刷版４面上
に一様の厚さとなるように供給して印刷を行う。By sliding, the squeegee 2a rubs the surface of the printing plate 3 and spreads out the solder paste 6 supplied on the printing plate 3, thereby causing the plurality of holes in the printing plate 3 or mesh tension. The solder paste 6 is drawn out from the gap to the lower surface side, and is supplied to the surface of the printing plate 4 superimposed on the lower side of the printing plate material 3 so as to have a uniform thickness, and printing is performed.
所定の位置までスキージホルダ１ａがスライド移動した
ら、印刷方向を１８ｏ°変更するために、下降させてい
た一方のスキージホルダ１ａを上昇させて印刷用版材３
から離間し、今度は反対方向にスライド移動する場合に
おいて後方となる他方のスキージホルダ１ｂを下降させ
、一定の加圧力により印刷用版材３面に圧接させる。When the squeegee holder 1a slides to a predetermined position, in order to change the printing direction by 18°, one of the squeegee holders 1a, which had been lowered, is raised and the printing plate material 3 is moved.
When the squeegee holder 1b is separated from the squeegee holder 1b and then slides in the opposite direction, the other squeegee holder 1b, which is located at the rear, is lowered and brought into pressure contact with the surface of the printing plate material 3 by a constant pressure.
そして、前記とは反対の図中矢印Ｂ方向に両スキージホ
ルダ１ａ、１ｂをスライド移動開始し、スキージホルダ
１ｂの下端のスキージ２ｂにより半田ペースト６を印刷
用版材３上で押し広げて、印刷版４に印刷する。Then, both squeegee holders 1a and 1b start sliding in the direction of arrow B in the figure, which is opposite to the above, and the squeegee 2b at the lower end of the squeegee holder 1b is used to spread the solder paste 6 on the printing plate material 3, thereby printing. Print on plate 4.
このように１８０°反対方向に往復移動を繰り返すこと
で、連続印刷を行っていた。Continuous printing was performed by repeating this reciprocating movement in opposite directions by 180 degrees.
しかしながら上述した従来の技術によれば、連続印刷を
行った場合、または印刷時つまり印刷媒体を印刷用版材
上に供給した後、連続印刷が長く続いたり、あるいは何
らかの理由により長時間印刷動作が停止した場合は、印
刷媒体（半田ペースト）に含まれている溶媒が自然揮発
してしまい、溶媒が揮発すると印刷媒体の粘度が高くな
って固くなってしまうという問題があった。However, according to the above-mentioned conventional technology, when continuous printing is performed, or during printing, that is, after the printing medium is fed onto the printing plate material, continuous printing continues for a long time, or printing operation for a long time occurs for some reason. If the printing medium is stopped, the solvent contained in the printing medium (solder paste) spontaneously evaporates, and when the solvent evaporates, the viscosity of the printing medium increases and becomes hard.
このような粘度が高くなって固くなった印刷媒体により
印刷を行うと、印刷用版材上に印刷媒体が一様に広がら
なくなり、印刷パターンの形状、および厚み等の寸法精
度を低下させると共に、孔やメツシュ張の隙間等に入り
込んでしまった印刷媒体が次の工程で抜けなくなったり
して、その結果半田付けの品質を劣化させてしまうとい
う問題があった。When printing is performed using a printing medium that has become hard due to increased viscosity, the printing medium does not spread uniformly on the printing plate material, which reduces the shape and dimensional accuracy of the printed pattern such as thickness. There is a problem in that the printing medium that has entered the hole or the gap between the mesh sheets cannot be removed in the next process, resulting in a deterioration in the quality of the soldering.
さらに、溶媒の揮発した高粘度の印刷媒体は、上述した
ように半田付は等の品質低下を招くために、ある一定の
粘度を越えた場合は印刷に使用できなくなり、従って新
しい被印刷媒体、印刷用版材並びに印刷媒体を供給しな
ければならず、コストアップを招いてしまうという問題
もあった。Furthermore, as mentioned above, high viscosity printing media with volatilized solvents lead to deterioration in quality such as soldering, so if the viscosity exceeds a certain level, they cannot be used for printing, so new printing media, There was also the problem that printing plate materials and printing media had to be supplied, leading to an increase in costs.
本発明は前記問題点を解決するためになされたものであ
り、連続して印刷を行う場合やまた何らかの要因により
印刷媒体の供給後における長時間の印刷動作停止があっ
ても、印刷媒体の溶媒の自然揮発を防止して粘度が高く
なるのを防ぎ、高粘度の印刷媒体による印刷パターン並
びに厚みの寸法精度の低下、及び半田付は品質の低下を
防止して信顧性ある印刷結果を提供すると共に低コスト
の印刷装置のスキージホルダ構造を提供することを目的
とする。The present invention has been made to solve the above problems, and even when printing is performed continuously or even if the printing operation is stopped for a long time after the printing medium is supplied due to some reason, the solvent of the printing medium can be removed. Prevents the natural volatilization of the liquid and prevents the viscosity from increasing, and prevents the dimensional accuracy of printing patterns and thickness due to high viscosity printing media, and the quality deterioration of soldering, thereby providing reliable printing results. It is an object of the present invention to provide a squeegee holder structure for a printing device at low cost.
上述した目的を達成するため本発明は、下端に弾性材か
ら成るスキージを取り付けたスキージホルダを、印刷を
行おうとする被印刷媒体の上方に上下動可能として垂直
に設け、このスキージホルダを前記被印刷媒体の上に重
ねた印刷用版材に圧接させてスライド移動することで印
刷する印刷装置用スキージホルダ構造において、前記印
刷媒体を周囲から遮断するため、該印刷媒体を覆うよう
にして周囲に遮蔽部を設けることとしたものである。In order to achieve the above-mentioned object, the present invention provides a squeegee holder with a squeegee made of an elastic material attached to its lower end, vertically movable above a printing medium on which printing is to be performed, and a squeegee holder that is vertically movable above the printing medium on which printing is to be performed. In a squeegee holder structure for a printing device that prints by pressing a printing plate material stacked on top of a printing medium and sliding it, a squeegee holder is used to cover the printing medium and protect it from the surroundings in order to isolate the printing medium from the surroundings. A shielding section is provided.
〔作 用］
上述した構成によれば、印刷時において印刷用版材上に
供給された印刷媒体は、スキージホルダに設けられた遮
蔽部により、その周囲を取り囲むようにして周囲から遮
蔽される。[Function] According to the above-described configuration, the printing medium supplied onto the printing plate material during printing is surrounded and shielded from the surroundings by the shielding portion provided on the squeegee holder.
このため、印刷媒体に含まれる溶媒の自然揮発が防止さ
れ印刷媒体の高粘度化が阻止される。Therefore, spontaneous volatilization of the solvent contained in the print medium is prevented, and increase in viscosity of the print medium is prevented.
その結果、印刷媒体が印刷用版材上に供給された後、長
時間経過しても印刷媒体の粘度はほぼ一定の状態に保持
できることから、スキージホルダを印刷用版材に沿って
移動することにより、印刷媒体を一様に押し広げて印刷
版に供給することが可能となり、印刷パターン及び厚み
等の寸法精度を確保できると共に、印刷動作の連続回数
を増加することができ、生産性を向上させることができ
る。As a result, the viscosity of the printing medium can be maintained in a nearly constant state even after a long period of time has passed after the printing medium is supplied onto the printing plate, making it possible to move the squeegee holder along the printing plate. This makes it possible to spread the printing medium uniformly and supply it to the printing plate, ensuring dimensional accuracy such as printing pattern and thickness, and increasing the number of consecutive printing operations, improving productivity. can be done.
以下本発明の一実施例を図面を用いて説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明の第１の実施例を示すスキージホルダ部
の側面図である。FIG. 1 is a side view of a squeegee holder section showing a first embodiment of the present invention.
図においてｌａ、ｌｂは２本で一対のスキージホルダで
あり、図示せぬ装置本体に所定の間隔により平行に取り
付けられており、各々独立して上下方向に移動可能とす
ると共に、後述する印刷ステージに沿って水平方向に一
体にスライド移動する構造となっている。In the figure, la and lb are a pair of squeegee holders, which are attached to the main body of the device (not shown) parallel to each other at a predetermined interval, and are movable independently in the vertical direction, as well as a printing stage which will be described later. It has a structure that allows it to slide in one piece in the horizontal direction along the .
２ａ、２ｂはこのスキージホルダｌａ、ｌｂの下端に取
りつけられたゴムまたは革等の弾性材から成るスキージ
、３はこのスキージ２ａ、２ｂが直接接触する印刷用版
材３であり、後述する被印刷媒体の印刷パターンに対応
する孔を有していたり、あるいはメツシュ張のスクリー
ン版から成っている。2a and 2b are squeegees made of an elastic material such as rubber or leather attached to the lower ends of the squeegee holders la and lb; 3 is a printing plate material 3 with which the squeegees 2a and 2b come into direct contact; It may have holes that correspond to the printed pattern of the medium, or it may consist of a mesh-covered screen plate.
４は前記印刷用版材３の下面側に重ねて配置する被印刷
媒体としての印刷版であり、この印刷版４はたとえば電
気製品等に内蔵され、多数の電子部品を搭載するための
プリント基板などで、平滑面を有する薄板材より成って
いる。Reference numeral 4 denotes a printing plate as a printing medium which is placed overlappingly on the lower surface side of the printing plate material 3, and this printing plate 4 is built in, for example, an electric product, etc., and is used as a printed circuit board for mounting a large number of electronic components. It is made of thin plate material with a smooth surface.
５は前記印刷版４を水平に倒した状態で載置するための
印刷ステージ、６は印刷媒体としての半田ペーストであ
る。5 is a printing stage on which the printing plate 4 is placed horizontally, and 6 is a solder paste as a printing medium.
７は前記スキージホルダｌａ、ｌｂ間を覆って周囲から
遮蔽するように設けた遮蔽部であり、端を一方のスキー
ジホルダ１ａあるいは１ｂにネジ等の固定手段により着
脱自在に取り付け、他端を他方のスキージホルダ１ｂあ
るいは１ａに形成された凹部８内に入り込ませている。Reference numeral 7 denotes a shielding part provided to cover the space between the squeegee holders la and lb to shield it from the surroundings, one end of which is removably attached to one of the squeegee holders 1a or 1b with a fixing means such as a screw, and the other end is attached to the other squeegee holder 1a or 1b. It is inserted into a recess 8 formed in the squeegee holder 1b or 1a.
凹部８は前記スキージホルダｌａ、ｌｂのそれぞれの上
下移動範囲骨の長さで、互いのスキージホルダＩａ、ｌ
ｂの対向する面に設けられている。The concave portion 8 is the length of the vertical movement range bone of each of the squeegee holders la and lb, and the length of each bone is the same as that of the squeegee holders la and lb.
provided on opposing surfaces of b.
なお、遮蔽部７は半田ペースト６の上方を覆うようにし
ている上面部７ａに加え、左右の端面にも同様に半田ペ
ースト６を遮蔽するための側面部７ｂ及び７Ｃを一体に
有しており、つまりこの遮蔽部７を取りつけることで半
田ペースト６は、その外周囲を全て覆われるようになっ
ている。さらに、この遮蔽部７の半田ペースト６と対向
する内面側には、半田ペースト６が密着しないように密
着性の悪いフッ素樹脂等によりコーティング加工しであ
る。In addition to the upper surface portion 7a that covers the upper part of the solder paste 6, the shielding portion 7 integrally has side portions 7b and 7C on the left and right end surfaces for similarly shielding the solder paste 6. That is, by attaching this shielding part 7, the entire outer periphery of the solder paste 6 is covered. Further, the inner surface of the shielding portion 7 facing the solder paste 6 is coated with a fluororesin or the like having poor adhesion so that the solder paste 6 does not adhere closely.
また、図示しないがこの遮蔽部７の上面あるいは側面に
は、半田ペースト６を供給するための開閉可能な供給用
孔を有していると共に、半田ペースト６の状態が目視で
きるように、透明な窓部を設けるか、もしくは遮蔽部７
自体を透明な樹脂材等により形成することとしている。Further, although not shown, the shielding part 7 has an openable and closable supply hole for supplying the solder paste 6 on the top or side surface of the shielding part 7, and also has a transparent supply hole so that the state of the solder paste 6 can be visually checked. Provide a window or shield 7
The device itself is made of a transparent resin material or the like.
上述した構成により被印刷媒体である印刷版４面に半田
ペースト６を印刷する場合は、まず印刷ステージ５上に
印刷版４を印刷面が上面となるよう寝かせて載置し、さ
らにこの上に印刷用版材３を、印刷パターンがずれない
ように孔等の位置合わせをして重ねあわせる。When printing the solder paste 6 on the four sides of the printing plate, which is the printing medium, using the above-described configuration, first place the printing plate 4 on the printing stage 5 with the printing side facing up, and then place the printing plate 4 on top of it. The printing plates 3 are overlapped with holes etc. aligned so that the printing patterns do not shift.
次にこの印刷用版材３の上に所定量の半田ペースト６を
供給するために、遮蔽部７の供給用孔を解放し、この供
給用孔から機械的手段あるいは手動により、１カ所ある
いは数箇所に盛り上げるようにして供給し、供給が終了
すると供給用孔を閉止する。Next, in order to supply a predetermined amount of solder paste 6 onto this printing plate material 3, the supply hole of the shielding part 7 is opened, and from this supply hole, it is applied mechanically or manually to one or several locations. It is supplied to the area in a heaping manner, and when the supply is finished, the supply hole is closed.
この後、前記スキージホルダｌａ、ｌｂが印刷時に移動
する印刷方向に対して後方に位置する一方のスキージホ
ルダ、例えばスライド移動方向が図中矢印Ａ方向であれ
ば１ａのみを、反対にＢ方向であれば１ｂのみを、印刷
用版材３方向に下降させ、該印刷用版材３面上に一定の
加圧力により下端のスキージ２ａを圧接させる。After that, one of the squeegee holders la and lb located at the rear with respect to the printing direction in which they move during printing, for example, if the slide movement direction is in the direction of arrow A in the figure, only 1a is moved, and on the contrary, in the direction of arrow B. If so, only the printing plate 1b is lowered in the direction of the printing plate 3, and the squeegee 2a at the lower end is pressed against the surface of the printing plate 3 with a constant pressure.
この時、上端を他方のスキージホルダ１ｂに固定されて
いる遮蔽部７は動かず、他端が他方のスキージホルダ１
ａの移動に伴って、凹部８内の上方に移動する。At this time, the shielding part 7 whose upper end is fixed to the other squeegee holder 1b does not move, and the other end is fixed to the other squeegee holder 1b.
As a moves, it moves upward in the recess 8.
この状態で、両スキージホルダｌａ、ｌｂを所定の印刷
方向、図においては矢印へ方向にスライド移動開始し、
これにより下端のスキージ２ａが印刷用版材３面を摺擦
して、半田ペースト６を印刷用版材３面上に押し広げる
ことで、この印刷用版材３の孔あるいはメツシュ張の隙
間から印刷版４上に半田ペースト６を供給して印刷を行
う。In this state, start sliding both squeegee holders la and lb in the predetermined printing direction, in the direction of the arrow in the figure.
As a result, the squeegee 2a at the lower end rubs the surface of the printing plate 3 and spreads the solder paste 6 over the surface of the printing plate 3, allowing it to penetrate through the holes in the printing plate 3 or the gaps in the mesh. Printing is performed by supplying solder paste 6 onto the printing plate 4.
所定の位置まで移動したら、下降させていた一方のスキ
ージホルダ１ａを上昇させて印刷用版材３から離間させ
、今度は反対方向にスライド移動する場合において後方
となる他方のスキージホルダ１ｂを下降させて、一定の
加圧力により印刷用版材３面に圧接し、前記とは逆のＢ
方向に移動して印刷を行い、この往復移動を繰り返すこ
とで、連続印刷を行う。After moving to a predetermined position, one squeegee holder 1a that had been lowered is raised to separate it from the printing plate material 3, and the other squeegee holder 1b, which will be at the rear when sliding in the opposite direction, is lowered. Then press against the three sides of the printing plate material with a constant pressure, and press B, which is the opposite of the above.
Continuous printing is performed by moving in the direction and printing, and repeating this back and forth movement.
このような印刷動作時において、半田ペースト６は遮蔽
部７により囲まれるような状態になるため周囲からほぼ
遮蔽される。その結果溶媒の自然揮発が防止されて高粘
度化が阻止される。During such a printing operation, the solder paste 6 is surrounded by the shielding portion 7 and is almost shielded from the surroundings. As a result, spontaneous volatilization of the solvent is prevented and increase in viscosity is prevented.
第２図は半田ペースト粘度の経時変化を示す図であり、
印刷用版材３上に供給された直後からの半田ペースト６
の粘度の変化を時間経過と共に示している。Figure 2 is a diagram showing the change in solder paste viscosity over time.
Solder paste 6 immediately after being supplied onto printing plate material 3
It shows the change in viscosity over time.
この図にみられるように、破線にて示した従来の半田ペ
ースト６の粘度は時間の経過に比例して急角度で高（な
っている、これに対して遮蔽部７を設けた本実施例は実
線にて示したように、若干高くはなっているが、従来と
比較すると大幅に粘度高化が阻止されていることがわか
る。As seen in this figure, the viscosity of the conventional solder paste 6 indicated by the broken line increases at a steep angle in proportion to the passage of time. As shown by the solid line, although it is slightly higher, it can be seen that the increase in viscosity is significantly prevented compared to the conventional case.
第３図は第２の実施例を示すスキージホルダ部の側面図
であり、この第２の実施例における遮蔽部９は、下面を
解放した箱型に形成され、スキージホルダｌａ、ｌｂと
は独立した別の手段により、取り付は高さを調整可能と
なるように図示せぬ印刷装置本体に上下動可能に支持さ
れている。FIG. 3 is a side view of the squeegee holder section showing the second embodiment. The shielding section 9 in this second embodiment is formed into a box shape with an open bottom surface, and is independent of the squeegee holders la and lb. By means of another means, the mounting is vertically movably supported on the main body of the printing apparatus (not shown) so that the height can be adjusted.
そしてスキージホルダ１ａ、１ｂを箱型の遮蔽部９の上
面から貫通させて、その下部周囲を遮蔽部９により取り
囲むようになっている。もちろん、この遮蔽部９には半
田ペースト６を供給するための供給用孔、及び半田ペー
スト６の状態を観察することができるいくつかの窓部を
第１の実施例と同様有している。さらに、半田ペースト
６の酸化を防止するための不活性ガスの供給も可能な構
造としている。The squeegee holders 1a and 1b are passed through from the upper surface of the box-shaped shielding part 9, and the lower part thereof is surrounded by the shielding part 9. Of course, this shielding part 9 has a supply hole for supplying the solder paste 6 and several windows through which the state of the solder paste 6 can be observed, as in the first embodiment. Furthermore, the structure is such that it is possible to supply an inert gas to prevent oxidation of the solder paste 6.
このような構造によれば、半田ペースト６は印刷動作時
、並びに長時間放置された状態でも常に遮蔽部９により
ほぼ密閉に近い状態に保持されることから、溶媒の揮発
を大幅に阻止することができる。With this structure, the solder paste 6 is always kept in a nearly hermetically sealed state by the shielding part 9 during the printing operation and even when left for a long time, so volatilization of the solvent can be significantly prevented. I can do it.
第４図は第２の実施例における半田ペースト粘度の経時
変化を示す図であり、この図に見られるように遮蔽部９
を用いた第２の実施例における半田ペーストの溶媒の揮
発はほぼ確実に防止されていることがわかる。FIG. 4 is a diagram showing the change in solder paste viscosity over time in the second embodiment, and as seen in this diagram, the shielding part 9
It can be seen that volatilization of the solvent of the solder paste in the second example using the solder paste is almost certainly prevented.
また、第５図は第３の実施例を示すスキージホルダ部の
側面図、第６図は第４の実施例を示すスキージホルダ部
の側面図である。Further, FIG. 5 is a side view of the squeegee holder section showing the third embodiment, and FIG. 6 is a side view of the squeegee holder section showing the fourth embodiment.
第３の実施例においては、遮蔽部１０の形状を半田ペー
スト６の供給時の形に対応させて、遮蔽部１０の内側面
に付着しないように、上部を盛り上げた形状としたもの
である。In the third embodiment, the shape of the shielding part 10 corresponds to the shape of the solder paste 6 when it is supplied, and the upper part is raised to prevent it from adhering to the inner surface of the shielding part 10.
また、第４の実施例においては第１〜第３の実施例とは
異なり、一対のスキージホルダ１１ａ。Further, in the fourth embodiment, unlike the first to third embodiments, a pair of squeegee holders 11a are used.
１１ｂを間隔を設けずに対向する面同士を接触させて形
成し、該スキージホルダｌｌａ、ｌｌｂの下端内側を半
田ペースト６を供給できるだけの空間を形成するために
円弧状に凹ませて遮蔽部１２ａ。The shielding portion 12a is formed by making the opposing surfaces of the squeegee holders lla and llb contact each other without any interval, and recessing the inside of the lower end of the squeegee holders lla and llb into an arc shape to form a space large enough to supply the solder paste 6. .
１２ｂとしている。これにより別部材による遮蔽部を用
いることなく半田ペースト６を周囲から遮蔽して、溶媒
の揮発を防止している。12b. As a result, the solder paste 6 is shielded from the surroundings without using a separate shielding member, and the volatilization of the solvent is prevented.
そして、これら第３と第４の実施例においても、前記第
１及び第２の実施例と同様の効果が得られることはいう
までもない。It goes without saying that the third and fourth embodiments also provide the same effects as the first and second embodiments.
以上説明したように本発明によれば、被印刷媒体面上に
重ね合わせた印刷用版材上に供給された印刷媒体の周囲
を、遮蔽部により覆って遮蔽することによって、印刷媒
体に含まれている溶媒の揮発を防止して、印刷媒体の粘
度が高くなるのを防ぐこととした。As explained above, according to the present invention, by covering and shielding the periphery of the printing medium supplied on the printing plate material superimposed on the surface of the printing medium with the shielding part, The aim was to prevent the viscosity of the print medium from increasing by preventing the solvent from evaporating.
このため、印刷動作が長く連続して行われたり、あるい
は印刷媒体供給後に何らかの要因により印刷動作が長時
間に渡って停止してしまったような場合でも、印刷媒体
の粘度は高くなることなく、はとんど一定の粘度に保持
することが可能となるので、スキージホルダをスライド
移動させることにより印刷媒体を、被印刷媒体面上に一
様の厚さで供給することができる。従って、印刷パター
ンや厚みの寸法精度を低下させることなく印刷を行うこ
とができる。Therefore, even if the printing operation continues for a long time, or if the printing operation stops for a long time due to some reason after the printing medium is supplied, the viscosity of the printing medium will not increase. Since it is possible to maintain the viscosity at a nearly constant level, by sliding the squeegee holder, the printing medium can be supplied with a uniform thickness onto the surface of the printing medium. Therefore, printing can be performed without reducing the dimensional accuracy of the printing pattern or thickness.
その結果、印刷動作の次工程たとえば半田付は作業等に
おいて、半田付は不良等を防止することができ、信頬性
有る印刷作業を提供することができる。As a result, defects in soldering can be prevented in the next step of the printing operation, such as soldering, and reliable printing operations can be provided.
また、印刷媒体の粘度を一定の状態で長時間保持するこ
とができることで、印刷動作の連続回数を増加すること
ができ、その結果生産性を向上させることもできるとい
う効果も得られる。Further, by being able to maintain the viscosity of the printing medium at a constant state for a long time, it is possible to increase the number of consecutive printing operations, and as a result, it is also possible to obtain the effect that productivity can be improved.
第１図は本発明の第１の実施例を示すスキージホルダの
側断面図、第２図は半田ペースト粘度の経時変化を示す
図、第３図は第２の実施例を示すスキージホルダの側断
面図、第４図は第２の実施例における半田ペースト粘度
の経時変化を示す図、第５図は第３の実施例を示すスキ
ージホルダの側断面図、第６図は第４の実施例を示すス
キージホルダの側断面図、第７図は従来例の構造を示す
スキージホルダの側断面図である。
ｌａ、Ｉｂ・ 、スキージホルタ
２ａ、２ｂ スキージ
４ ・ ＬＦ＃Ｉ）反
ｌａ、ｌｂ・・・スキージホルダ
２ａ、２ｂ・・・スキージ
４・・・印刷版
６・・・半田ペースト
７．９．１２・・・遮蔽部
３・・・印刷用版材
５・・・印刷ステージ
冥施例乞示す１１１断面図
鴫 １ ロ
特 許 出 願 人 沖電気工業株式会社代 理
人 弁理士 金倉喬二半田ペースト粘度の経時
叉化宴示て図
輸 ２ 国
２６２−FIG. 1 is a side sectional view of a squeegee holder showing a first embodiment of the present invention, FIG. 2 is a diagram showing changes in solder paste viscosity over time, and FIG. 3 is a side view of a squeegee holder showing a second embodiment. 4 is a diagram showing the change in solder paste viscosity over time in the second embodiment, FIG. 5 is a side sectional view of the squeegee holder showing the third embodiment, and FIG. 6 is a diagram showing the fourth embodiment. FIG. 7 is a side sectional view of the squeegee holder showing the structure of a conventional example. la, Ib・, squeegee holder 2a, 2b squeegee 4・LF#I) anti la, lb...squeegee holder 2a, 2b...squeegee 4...printing plate 6...solder paste 7.9.12・・・Shielding part 3 ・・Printing plate material 5 ・・Cross-sectional view of 111 showing the printing stage example Illustrated illustration showing the change over time 2 Country 262-
Claims (1)
ジホルダを、印刷を行おうとする被印刷媒体の上方に上
下動可能として垂直に設け、 このスキージホルダを前記被印刷媒体面に圧接させてス
ライド移動することで被印刷媒体面上に印刷媒体を印刷
する印刷装置用スキージホルダ構造において、 前記印刷媒体を周囲から遮断するため、該印刷媒体を覆
うようにして周囲に遮蔽部を設けることを特徴とする印
刷装置用スキージホルダ構造。[Claims] 1. A squeegee holder with a squeegee made of an elastic material attached to its lower end is vertically movable above the printing medium on which printing is to be performed, and the squeegee holder is mounted on the surface of the printing medium. In a squeegee holder structure for a printing device that prints a print medium on the surface of a print medium by sliding it in pressure contact with the print medium, a shielding portion is provided around the print medium so as to cover the print medium in order to block the print medium from the surroundings. A squeegee holder structure for a printing device, characterized in that it is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33113789A JPH03193347A (en) | 1989-12-22 | 1989-12-22 | Structure of squeegee holder for printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33113789A JPH03193347A (en) | 1989-12-22 | 1989-12-22 | Structure of squeegee holder for printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03193347A true JPH03193347A (en) | 1991-08-23 |
Family
ID=18240285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33113789A Pending JPH03193347A (en) | 1989-12-22 | 1989-12-22 | Structure of squeegee holder for printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03193347A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07323516A (en) * | 1994-06-01 | 1995-12-12 | Matsushita Electric Ind Co Ltd | Screen printing machine |
| JP2007059728A (en) * | 2005-08-25 | 2007-03-08 | Omron Corp | Device for inspecting solder material, method of controling same, program therefor, and computer-readable storage medium recording same |
| JP2008062265A (en) * | 2006-09-06 | 2008-03-21 | Omron Corp | Output device, output method and program |
| JP2008105255A (en) * | 2006-10-25 | 2008-05-08 | Denso Corp | Solder printing method and solder printing head |
-
1989
- 1989-12-22 JP JP33113789A patent/JPH03193347A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07323516A (en) * | 1994-06-01 | 1995-12-12 | Matsushita Electric Ind Co Ltd | Screen printing machine |
| JP2007059728A (en) * | 2005-08-25 | 2007-03-08 | Omron Corp | Device for inspecting solder material, method of controling same, program therefor, and computer-readable storage medium recording same |
| JP4539496B2 (en) * | 2005-08-25 | 2010-09-08 | オムロン株式会社 | Solder material inspection device, control method of solder material inspection device, solder material inspection program, computer-readable recording medium recording solder material inspection program |
| JP2008062265A (en) * | 2006-09-06 | 2008-03-21 | Omron Corp | Output device, output method and program |
| JP2008105255A (en) * | 2006-10-25 | 2008-05-08 | Denso Corp | Solder printing method and solder printing head |
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