JP2009107232A - Screen printer - Google Patents
Screen printer Download PDFInfo
- Publication number
- JP2009107232A JP2009107232A JP2007282492A JP2007282492A JP2009107232A JP 2009107232 A JP2009107232 A JP 2009107232A JP 2007282492 A JP2007282492 A JP 2007282492A JP 2007282492 A JP2007282492 A JP 2007282492A JP 2009107232 A JP2009107232 A JP 2009107232A
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- JP
- Japan
- Prior art keywords
- squeegee
- screen
- printing machine
- cream solder
- coating agent
- 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.)
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- 238000007639 printing Methods 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- 238000007650 screen-printing Methods 0.000 claims description 21
- 229910000679 solder Inorganic materials 0.000 abstract description 22
- 239000006071 cream Substances 0.000 abstract description 20
- 239000000758 substrate Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Landscapes
- Screen Printers (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Manufacturing Of Printed Wiring (AREA)
Abstract
Description
本発明は、スクリーン板上の塗布剤をスキージヘッドに取り付けられたスキージを移動させることにより、前記スクリーン板に開設された印刷パターン孔を介してプリント基板上に塗布するスクリーン印刷機に関する。 The present invention relates to a screen printing machine that applies a coating agent on a screen plate onto a printed circuit board by moving a squeegee attached to a squeegee head through print pattern holes provided in the screen plate.
この種のスクリーン印刷機は、例えば特許文献１などに開示されているが、前記スキージの移動方向側のこのスキージとスクリーン板との成す角度が鈍角となるように、各スキージは前記各スキージヘッドに取付けられている。そして、このように取付けることにより、印圧を小さくできるから、スキージの磨耗が少なくでき、しかもスクリーン板上の塗布剤との接触代が少ないから、スクリーンの移動の際の抵抗が小さく、スキージの移動速度を速めることができる。
しかしながら、スキージの移動速度を上げると、スクリーン板の印刷パターン孔への塗布剤の充填が不十分となる事態が発生し、不良プリント基板の生産を招く。 However, when the moving speed of the squeegee is increased, a situation occurs in which the coating pattern hole of the screen plate is not sufficiently filled with the coating agent, leading to production of a defective printed board.
そこで本発明は、スキージの移動速度を上げても、スクリーン板の印刷パターン孔への塗布剤の充填を十分に行えるスクリーン印刷機を提供することを目的とする。 Therefore, an object of the present invention is to provide a screen printing machine that can sufficiently fill a printing pattern hole of a screen plate with a coating agent even if the moving speed of a squeegee is increased.
このため第１の発明は、スクリーン板上の塗布剤をスキージヘッドに取り付けられたスキージを移動させることにより、前記スクリーン板に開設された印刷パターン孔を介してプリント基板上に塗布するスクリーン印刷機において、前記スキージの移動方向側の角度であってこのスキージと前記スクリーン板との成す角度が鈍角となるようにスキージを前記スキージヘッドに取付けると共に、前記スキージのスキージ移動方向側の面の下部に前記塗布剤が入り込めるスペースを形成するように前記スキージの下部を下端まで切除したことを特徴とする。 For this reason, the first invention is a screen printing machine for applying a coating agent on a screen board onto a printed circuit board through a printing pattern hole formed in the screen board by moving a squeegee attached to the squeegee head. The squeegee is attached to the squeegee head so that the angle between the squeegee and the screen plate is an obtuse angle. The lower part of the squeegee is cut off to the lower end so as to form a space in which the coating agent can enter.
また第２の発明は、スクリーン板上の塗布剤をスキージヘッドに取り付けられたスキージを移動させることにより、前記スクリーン板に開設された印刷パターン孔を介してプリント基板上に塗布するスクリーン印刷機において、前記スキージの移動方向側の角度であってこのスキージと前記スクリーン板との成す角度が鈍角となるようにスキージを前記スキージヘッドに取付けると共に、前記スキージのスキージ移動方向側の面の下部に前記塗布剤が入り込めるスペースを形成するように段差部を形成したことを特徴とする。 According to a second aspect of the present invention, there is provided the screen printing machine for applying the coating agent on the screen board onto the printed circuit board through the printing pattern hole provided in the screen board by moving the squeegee attached to the squeegee head. The squeegee is attached to the squeegee head so that the angle formed between the squeegee and the screen plate is an obtuse angle. A step portion is formed so as to form a space in which the coating agent can enter.
第３の発明は、第1又は第２の発明において、前記スキージは断面がほぼ長方形であり、スキージ移動方向側の長辺とスクリーン板との成す角度が鈍角であることを特徴とする。 According to a third invention, in the first or second invention, the squeegee has a substantially rectangular cross section, and an angle formed between a long side on the squeegee moving direction side and the screen plate is an obtuse angle.
第４の発明は、第1又は第２の発明において、前記スペースを形成する前記スキージの上面を前記スクリーン板と略平行となるように形成したことを特徴とする。 According to a fourth invention, in the first or second invention, an upper surface of the squeegee forming the space is formed so as to be substantially parallel to the screen plate.
本発明は、スキージの移動速度を上げても、スクリーン板の印刷パターン孔への塗布剤の充填を十分に行えるスクリーン印刷機を提供することができる。 The present invention can provide a screen printing machine capable of sufficiently filling a coating pattern hole of a screen plate with a coating agent even when the moving speed of a squeegee is increased.
以下図面に基づき、スクリーン印刷機について、説明する。図１は本発明の一実施形態であるスクリーン印刷機のスキージ機構の要部正面図、図２は左方のスキージが下降した状態のスクリーン印刷機のスキージ機構の正面図、図３は右のスキージが下降してスクリーンを介して印刷する場合の要部拡大図、図４は右のスキージによる印刷動作説明図である。 The screen printing machine will be described below with reference to the drawings. FIG. 1 is a front view of a main part of a squeegee mechanism of a screen printing machine according to an embodiment of the present invention, FIG. 2 is a front view of the squeegee mechanism of the screen printing machine in a state in which the left squeegee is lowered, and FIG. FIG. 4 is an explanatory view of a printing operation by the right squeegee when FIG.
本実施形態のスクリーン印刷機のスキージ機構を、図１及び図２において説明すると、１はスクリーンＳを介して基板支持テーブル（図示せず）上に載置されたプリント基板上に印刷を行うスキージ機構であり、スクリーン印刷機にＸ軸方向（図１の左右方向）に移動可能に取り付けられたフレーム２を有している。このフレーム２には、各シリンダ４によりＺ軸方向（図１の上下方向）に独立して移動する一対のスキージヘッド３が対向するように取り付けられている。この各スキージヘッド３の下部には、スクリーンＳ面に対して所定角度傾斜して支持されたスキージホルダー５が設けられ、このスキージホルダー５と押さえ板６との間にスキージホルダー５と図２のような平行に延びる扁平状（進退行方向側の側面の面積が下面より大きく、移動方向断面がほぼ長方形）のスキージ７が固定される。 The squeegee mechanism of the screen printing machine according to the present embodiment will be described with reference to FIGS. 1 and 2. Reference numeral 1 denotes a squeegee that performs printing on a printed circuit board placed on a substrate support table (not shown) via the screen S. It is a mechanism and has a frame 2 attached to a screen printing machine so as to be movable in the X-axis direction (left-right direction in FIG. 1). A pair of squeegee heads 3 that are independently moved in the Z-axis direction (vertical direction in FIG. 1) by the cylinders 4 are attached to the frame 2 so as to face each other. At the bottom of each squeegee head 3 is provided a squeegee holder 5 supported at a predetermined angle with respect to the screen S surface, and between the squeegee holder 5 and the pressing plate 6, the squeegee holder 5 and FIG. A squeegee 7 having a flat shape (the area of the side surface on the advancing / retreating direction side is larger than the lower surface and the cross section in the moving direction is substantially rectangular) is fixed.
また、前記スクリーンＳは、前記プリント基板の所望の回路パターンに対応して穿設された印刷パターン孔８Ａが設けられたスクリーン板８と、該板８を囲む平面視矩形状のスクリーン枠９とから構成される。そして、スクリーン枠９は、スクリーン印刷機にＸ軸方向（図１の紙面と平行な方向）にモータ等の駆動手段（図示せず）によって、移動可能に取り付けられている。プリント基板は、搬送コンベア（図示せず）によって、印刷位置に配置された基板支持テーブル上に載置されると共に印刷終了後にこの基板支持テーブルから搬出される。 The screen S includes a screen plate 8 provided with a print pattern hole 8A formed corresponding to a desired circuit pattern of the printed circuit board, and a screen frame 9 having a rectangular shape in plan view surrounding the plate 8. Consists of The screen frame 9 is attached to the screen printing machine so as to be movable in the X-axis direction (direction parallel to the paper surface of FIG. 1) by driving means (not shown) such as a motor. The printed circuit board is placed on a substrate support table arranged at a printing position by a conveyor (not shown) and is unloaded from the substrate support table after printing is completed.
前記各スキージ７の移動方向側の角度であってこのスキージ７とスクリーン板８との成す角度が鈍角θとなるように、各スキージ７は前記各スキージヘッド３に取付けられている。即ち、図２のような扁平状のスキージの場合、断面が長方形の長辺とスクリーン板との成す角度が鈍角θとなるように、各スキージ７は前記各スキージヘッド３に取付けられている。 Each squeegee 7 is attached to each squeegee head 3 so that the angle formed by the squeegee 7 and the screen plate 8 is an obtuse angle θ. That is, in the case of a flat squeegee as shown in FIG. 2, each squeegee 7 is attached to each squeegee head 3 so that the angle formed by the long side of the rectangular section and the screen plate is an obtuse angle θ.
このように取付けることにより、印刷時においてスクリーン板８上の塗布剤であるクリーム半田Ｐとの接触代が少ないから、スキージ７が受ける上向きの圧力を小さくでき、この結果、印圧を小さくできるから、スキージ７の磨耗が少なくでき、しかもスクリーン板８上の塗布剤であるクリーム半田Ｐとの接触代が少ないから、スクリーン７の移動の際の抵抗が小さく、スクリーン板８の印刷パターン孔８Ａへの充填が不十分となることなく、移動速度を速めることができる。しかしながら、よりスキージ７の移動速度を上げると、印刷パターン孔８Ａへの充填が不十分となる事態が発生する。 By mounting in this way, there is little contact allowance with the cream solder P that is the coating agent on the screen plate 8 at the time of printing, so the upward pressure received by the squeegee 7 can be reduced, and as a result, the printing pressure can be reduced. Further, since the wear of the squeegee 7 can be reduced and the contact amount with the cream solder P, which is the coating agent on the screen plate 8, is small, the resistance when the screen 7 moves is small, and the print pattern hole 8A of the screen plate 8 is moved. The moving speed can be increased without insufficient filling. However, when the moving speed of the squeegee 7 is further increased, a situation in which the filling of the print pattern holes 8A becomes insufficient occurs.
そこで、各スキージ７のスキージ移動方向側の面の下部にクリーム半田Ｐが入り込めるスペースＳＰを形成するように、各スキージ７の最下端部を切除して、このスキージ７の進行方向側のクリーム半田Ｐに対向する側面にはクリーム半田Ｐと接する面積が大きな面７Ａと小さな面７Ｂとが形成されるように段差部７Ｃを形成する。この切除後の前記スペースＳＰを形成する上面７Ｄはスクリーン板８と略平行である。 Therefore, the lowermost end portion of each squeegee 7 is cut out so as to form a space SP in which the cream solder P can enter in the lower part of the surface of each squeegee 7 on the squeegee moving direction side. A stepped portion 7C is formed on the side surface facing P so that a surface 7A having a large area in contact with the cream solder P and a small surface 7B are formed. The upper surface 7D that forms the space SP after the excision is substantially parallel to the screen plate 8.
なお、本実施形態では、前記面積が大きな面７Ａを上に、小さな面７Ｂを下に形成するように段差部７Ｃを形成したが、これに限らず、段差部７Ｃを形成する位置は必ずしも下部のみでなくともよい。従って、例えば小さな面を上に、大きな面を下に形成して、段差を上部に形成してスペースＳＰを増やしてもよい。 In the present embodiment, the step portion 7C is formed so that the large surface 7A is formed on the top and the small surface 7B is formed on the bottom. However, the present invention is not limited thereto, and the position where the step portion 7C is formed is not necessarily lower. Not only. Therefore, for example, the space SP may be increased by forming a small surface on the top and a large surface on the bottom and forming a step on the top.
以上の構成により、スクリーン印刷機のスキージ機構１の作用について説明すると、印刷工程において、まず、搬送コンベア（図示せず）によって基板支持テーブル上に搬送されてきたプリント基板とスクリーンＳの位置合わせが行われた後、クリーム半田供給手段（図示せず）によってスクリーンＳ上にクリーム半田が供給される。 With the above configuration, the operation of the squeegee mechanism 1 of the screen printing machine will be described. In the printing process, first, the alignment of the printed circuit board and the screen S, which have been transported onto the substrate support table by the transport conveyor (not shown), is performed. After being performed, cream solder is supplied onto the screen S by cream solder supply means (not shown).
そして、図２に示すように、左のシリンダ４の駆動により左のスキージヘッド３が下降し、スキージ機構１０全体が右方向に移動し、左のスキージ７がスクリーンＳ上のクリーム半田Ｐを掃引して、スクリーン板８の印刷パターン孔８Ａを介してプリント基板上にクリーム半田Ｐを印刷する。また、これとは逆に、右のシリンダ４の駆動により右のスキージヘッド３が下降し、スキージ機構１０全体が左方向に移動し、右のスキージ７がスクリーンＳ上のクリーム半田Ｐを掃引して、スクリーン板８の印刷パターン孔８Ａを介してプリント基板上にクリーム半田Ｐを印刷することもできる。 Then, as shown in FIG. 2, the left squeegee head 3 is lowered by driving the left cylinder 4, the entire squeegee mechanism 10 is moved in the right direction, and the left squeegee 7 sweeps the cream solder P on the screen S. Then, the solder paste P is printed on the printed circuit board through the printing pattern holes 8A of the screen board 8. On the contrary, the right squeegee head 3 is lowered by driving the right cylinder 4, the entire squeegee mechanism 10 is moved to the left, and the right squeegee 7 sweeps the cream solder P on the screen S. Thus, the cream solder P can be printed on the printed circuit board through the printing pattern holes 8A of the screen plate 8.
そして、右のスキージ７の左方向に移動することによる印刷動作について、図３及び図４に基づき説明する。先ず、スキージ７が左方向に移動して、最上段の図４の（Ａ）の状態から図４の（Ｂ）に示すように移動すると、スキージ７によりスクリーン板８の印刷パターン孔８Ａの先端部からクリーム半田Ｐが充填し始める。 The printing operation by moving the right squeegee 7 in the left direction will be described with reference to FIGS. First, when the squeegee 7 moves to the left and moves from the state shown in FIG. 4A to the position shown in FIG. 4B, the tip of the print pattern hole 8A of the screen plate 8 is moved by the squeegee 7. Cream solder P begins to fill from the part.
そして、スキージ７が上段から３番目の図４の（Ｃ）の位置に到達したときには、印刷パターン孔８Ａにはクリーム半田Ｐがほとんど充填し終えることとなる。しかし、スキージ７を高速度で移動させた場合には、印刷パターン孔８Ａにクリーム半田Ｐが充填し切れていない部分が発生する事態が発生し易いが、スペースＳＰ内に入り込んでいるクリーム半田Ｐをスキージ７の上面７Ｄが下方へ押圧するように作用しながら（４段目の図４の（Ｄ）参照）、スキージ７が移動することとなる。 When the squeegee 7 reaches the third position (C) of FIG. 4 from the top, the printed pattern hole 8A is almost completely filled with the cream solder P. However, when the squeegee 7 is moved at a high speed, it is easy to generate a portion where the printed pattern hole 8A is not completely filled with the cream solder P, but the cream solder P entering the space SP is likely to occur. The squeegee 7 moves while acting so that the upper surface 7D of the squeegee 7 presses downward (see FIG. 4D of the fourth stage).
従って、印刷パターン孔８Ａにスキージ７の大きな面７Ａでクリーム半田Ｐを充填させ、次いでクリーム半田Ｐが充填し切れていない部分が発生しても、小さな７Ｂと上面７Ｄとで、その後漏れなく確実に充填することができる。 Therefore, even if the printed pattern hole 8A is filled with the cream solder P by the large surface 7A of the squeegee 7 and then the portion where the cream solder P is not completely filled is generated, the small 7B and the upper surface 7D are surely prevented from leaking thereafter. Can be filled.
そして、５段目の図４の（Ｅ）に示すように、スキージ７が印刷パターン孔８Ａを通過して、当該印刷パターン孔８Ａへのクリーム半田Ｐの充填を終える。更に、スキージ７が左方向へ移動して、その後左のシリンダ４の駆動により左のスキージヘッド３が上昇して、印刷動作が終了する。 Then, as shown in FIG. 4E in the fifth stage, the squeegee 7 passes through the print pattern hole 8A, and the filling of the cream solder P into the print pattern hole 8A is completed. Furthermore, the squeegee 7 moves to the left, and then the left squeegee head 3 is raised by driving the left cylinder 4 to complete the printing operation.
以上のように本発明の実施態様について説明したが、上述の説明に基づいて当業者にとって種々の代替例、修正又は変形が可能であり、本発明はその趣旨を逸脱しない範囲で前述の種々の代替例、修正又は変形を包含するものである。 Although the embodiments of the present invention have been described above, various alternatives, modifications, and variations can be made by those skilled in the art based on the above description, and the present invention is not limited to the various embodiments described above without departing from the spirit of the present invention. It encompasses alternatives, modifications or variations.
１ スキージ機構
３ スキージヘッド
５ スキージホルダー
７ スキージ
７Ａ 大きな面
７Ｂ 小さな面
７Ｃ 段差部
７Ｄ 上面
８ スクリーン板
８Ａ 印刷パターン孔
１０ スキージ機構
Ｐ クリーム半田
Ｓ スクリーン
ＳＰ スペース
DESCRIPTION OF SYMBOLS 1 Squeegee mechanism 3 Squeegee head 5 Squeegee holder 7 Squeegee 7A Large surface 7B Small surface 7C Step part 7D Top surface 8 Screen board 8A Print pattern hole 10 Squeegee mechanism P Cream solder S Screen SP space
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007282492A JP5074886B2 (en) | 2007-10-30 | 2007-10-30 | Screen printing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007282492A JP5074886B2 (en) | 2007-10-30 | 2007-10-30 | Screen printing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2009107232A true JP2009107232A (en) | 2009-05-21 |
| JP5074886B2 JP5074886B2 (en) | 2012-11-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007282492A Active JP5074886B2 (en) | 2007-10-30 | 2007-10-30 | Screen printing machine |
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| Country | Link |
|---|---|
| JP (1) | JP5074886B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009179014A (en) * | 2008-01-31 | 2009-08-13 | Hitachi High-Tech Instruments Co Ltd | Screen printing machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0414451A (en) * | 1990-05-07 | 1992-01-20 | Toshiba Mach Co Ltd | Squeegee device |
| JPH04113847A (en) * | 1990-09-04 | 1992-04-15 | Toshiba Mach Co Ltd | Squeegee device in screen printing machine |
| JPH1120128A (en) * | 1997-07-02 | 1999-01-26 | Juki Corp | Cream solder printer |
| JP2000168044A (en) * | 1998-12-07 | 2000-06-20 | Matsushita Electric Ind Co Ltd | Squeegee for screen printing and screen printer |
| JP2004130735A (en) * | 2002-10-11 | 2004-04-30 | Kimio Ito | Squeegee for screen printing |
-
2007
- 2007-10-30 JP JP2007282492A patent/JP5074886B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0414451A (en) * | 1990-05-07 | 1992-01-20 | Toshiba Mach Co Ltd | Squeegee device |
| JPH04113847A (en) * | 1990-09-04 | 1992-04-15 | Toshiba Mach Co Ltd | Squeegee device in screen printing machine |
| JPH1120128A (en) * | 1997-07-02 | 1999-01-26 | Juki Corp | Cream solder printer |
| JP2000168044A (en) * | 1998-12-07 | 2000-06-20 | Matsushita Electric Ind Co Ltd | Squeegee for screen printing and screen printer |
| JP2004130735A (en) * | 2002-10-11 | 2004-04-30 | Kimio Ito | Squeegee for screen printing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009179014A (en) * | 2008-01-31 | 2009-08-13 | Hitachi High-Tech Instruments Co Ltd | Screen printing machine |
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| Publication number | Publication date |
|---|---|
| JP5074886B2 (en) | 2012-11-14 |
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