JP4712470B2 - Screen printing machine - Google Patents

Screen printing machine Download PDF

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Publication number
JP4712470B2
JP4712470B2 JP2005216582A JP2005216582A JP4712470B2 JP 4712470 B2 JP4712470 B2 JP 4712470B2 JP 2005216582 A JP2005216582 A JP 2005216582A JP 2005216582 A JP2005216582 A JP 2005216582A JP 4712470 B2 JP4712470 B2 JP 4712470B2
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circuit board
printed circuit
substrate
printed
screen
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JP2007030329A (en
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弘和 藤生
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Hitachi High Tech Instruments Co Ltd
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Hitachi High Tech Instruments Co Ltd
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Description

本発明は、上流側装置から搬送されてきたプリント基板を基板クランプ機構によりクランプして、基板支持台上に吸着保持した状態の前記プリント基板にスキージの移動によりスクリーン版を介してクリーム半田を塗布して印刷するスクリーン印刷機に関する。   The present invention clamps a printed circuit board conveyed from an upstream device by a circuit board clamping mechanism, and applies cream solder to the printed circuit board in a state of being sucked and held on a circuit board support table by moving a squeegee through a screen plate. The present invention relates to a screen printing machine that performs printing.

この種のスクリーン印刷機は、例えば特許文献1などで知られているが、一般に基板クランプ機構は一対のクランプ部材から構成し、基板支持台上に支持した状態の前記プリント基板にスキージをいずれかの前記クランプ部材方向に移動させることにより印刷するものである。   This type of screen printing machine is known, for example, from Patent Document 1 and the like. Generally, the substrate clamping mechanism is composed of a pair of clamping members, and a squeegee is placed on the printed circuit board that is supported on the substrate support base. Is printed by moving in the direction of the clamp member.

しかし、基板クランプ機構がプリント基板をクランプする際に、プリント基板を基板支持台上に吸着保持して、プリント基板の反りや歪みを矯正しているが、この反りや歪みが大きいと、吸着保持できないことがあるため、下降した基板押え部材でプリント基板を基板支持台に押えながら吸着している。
特開2002−29026号公報
However, when the printed circuit board is clamped by the printed circuit board clamp mechanism, the printed circuit board is sucked and held on the board support base to correct the warped or distorted printed circuit board. In some cases, the printed circuit board is held on the board support by the lowered board pressing member.
JP 2002-29026 A

しかし、基板押え部材でプリント基板を基板支持台に押える部分は点であって、プリント基板全体を押えるものでないため、十分にプリント基板を基板支持台に密着させることができず、スクリーン印刷の際のクリーム半田のにじみやブリッジの原因となっていた。   However, the part that presses the printed circuit board against the board support base with the board pressing member is a point and does not press the entire printed circuit board, so the printed circuit board cannot be brought into close contact with the board support base. It was a cause of bleeding and bridging of cream solder.

そこで本発明は、スクリーン印刷の際に、プリント基板を基板支持台に確実に密着させることを目的とする。   SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to ensure that a printed circuit board is in close contact with a substrate support during screen printing.

このため第1の発明は、上流側装置から搬送されてきたプリント基板を基板クランプ機構によりクランプして、基板支持台上に吸着保持した状態の前記プリント基板にスキージの移動によりスクリーン版を介してクリーム半田を塗布して印刷するスクリーン印刷機において、往復移動可能に設けられた取付体に支軸を支点として揺動可能に設けられた基板押え部材を設け、駆動源により押圧されると前記基板押え部材が揺動してその一部を構成する複数のローラーが前記基板支持台上に吸着保持した状態の前記プリント基板を上方から押圧し、且つ複数の前記ローラーが該プリント基板を上方から押圧しながら移動することを特徴とする。 Therefore, according to the first aspect of the present invention , the printed circuit board conveyed from the upstream device is clamped by the substrate clamping mechanism, and the printed circuit board in the state of being sucked and held on the substrate support base is moved through the screen plate by moving the squeegee. In a screen printing machine for applying and printing cream solder, a substrate pressing member provided swingably with a support shaft as a fulcrum is provided on a mounting body provided so as to be able to reciprocate, and the substrate when pressed by a drive source A plurality of rollers constituting a part of the pressing member swing and press the printed circuit board in a state of being sucked and held on the substrate support base from above, and the plurality of rollers press the printed circuit board from above. It is characterized by moving while.

本発明は、スクリーン印刷の際に、プリント基板を基板支持台に十分に密着させ、プリント基板とスクリーン版との密着性を向上させることができるから、クリーム半田のにじみやブリッジが防止でき、特に薄いプリント基板や腰の弱いプリント基板、既にリフロー済みで反っているプリント基板などに好適である。   In the present invention, during screen printing, the printed circuit board can be sufficiently adhered to the substrate support base, and the adhesion between the printed circuit board and the screen plate can be improved. It is suitable for thin printed boards, weak printed boards, printed boards that have already been reflowed and warped.

以下、図面に基づき、本発明のスクリーン印刷機の実施の形態を説明する。1、1はプリント基板Pを搬送するための一対の搬送コンベアで、上流側装置から受け継いだプリント基板Pを所定位置まで搬送するものである。2は図示しない昇降機構により上下動するバックアップベースで、このベース2上には天面に開口して真空源に連通する複数の多数の吸着孔が開設された基板支持台である吸着治具3が設けられる。   Hereinafter, an embodiment of a screen printer of the present invention will be described with reference to the drawings. Reference numerals 1 and 1 denote a pair of transport conveyors for transporting the printed circuit board P, which transports the printed circuit board P inherited from the upstream device to a predetermined position. Reference numeral 2 denotes a backup base that moves up and down by an elevating mechanism (not shown), and a suction jig 3 that is a substrate support base on which a plurality of suction holes that open to the top surface and communicate with a vacuum source are opened. Is provided.

5は基板クランプ機構で、上流側装置から一対の前記搬送コンベア1、1を介して搬送されてきたプリント基板Pが上下動可能な基板ストッパ6に当接して停止した後にバックアップ用の前記吸着治具3が上昇し、その後にこのプリント基板Pをクランプするものである。この基板クランプ機構5はプリント基板Pの搬送方向と直交する方向のプリント基板Pの両端部をクランプするもので、機体前側に配設される一方のクランプ部材である固定部6と、この固定部6に対向するように機体後側に配設される他方のクランプ部材である可動部7とから構成され、前記可動部7は不動の脚体7Aとこの脚体7Aに沿って前後方向に移動可能な押圧体7Bとから構成される。従って、プリント基板Pをクランプする際には、図示しない駆動源により可動部7の押圧体7Bが前方へ(図1の右方へ)移動して、プリント基板Pを固定部6に押圧してクランプするものである。   Reference numeral 5 denotes a substrate clamping mechanism, and the printed circuit board P conveyed from the upstream apparatus via the pair of conveyors 1 and 1 comes into contact with the vertically movable substrate stopper 6 and stops, and then the adsorption treatment for backup. The tool 3 is raised, and then the printed board P is clamped. This board clamping mechanism 5 clamps both ends of the printed board P in a direction orthogonal to the conveyance direction of the printed board P. The fixing section 6 is one clamping member disposed on the front side of the machine body, and the fixing section. 6 and a movable part 7 which is the other clamp member disposed on the rear side of the machine body so as to oppose to the body 6. The movable part 7 moves in the front-rear direction along the stationary leg 7A and the leg 7A. It is comprised from the possible press body 7B. Therefore, when clamping the printed circuit board P, the pressing body 7B of the movable part 7 is moved forward (to the right in FIG. 1) by a driving source (not shown), and the printed circuit board P is pressed against the fixed part 6. It is to clamp.

10は駆動モータ11の運転によりカップリング12を介して回動するネジ軸で、このネジ軸10の回動によりナット13に固定された移動テーブル14下面のスライド15がガイド16に沿って摺動して移動テーブル14がプリント基板Pの搬送方向と直交する方向に移動する。従って、この移動テーブル14に固定された第1取付体18に固定された第2取付体19もナット13及び移動テーブル14と共にプリント基板Pの搬送方向と直交する方向に移動する。   Reference numeral 10 denotes a screw shaft that rotates through the coupling 12 by the operation of the drive motor 11, and the slide 15 on the lower surface of the moving table 14 fixed to the nut 13 by the rotation of the screw shaft 10 slides along the guide 16. Then, the moving table 14 moves in a direction orthogonal to the transport direction of the printed circuit board P. Accordingly, the second mounting body 19 fixed to the first mounting body 18 fixed to the moving table 14 also moves in the direction orthogonal to the conveyance direction of the printed circuit board P together with the nut 13 and the moving table 14.

なお、前記第2取付体19には認識カメラ20が固定され、この認識カメラ20によりスクリーン21Aとその支持枠21Bから成るスクリーン版21及びプリント基板Pに付された位置合わせマークが撮像される。22はその駆動源により上下動可能な基板ストッパで、下降すると上流側装置より一対の搬送コンベア1、1を介して搬送されてきたプリント基板Pがこの基板ストッパ22に当接して停止する。   A recognition camera 20 is fixed to the second mounting body 19, and the recognition camera 20 picks up images of alignment marks on the screen plate 21 and the printed circuit board P, which are composed of the screen 21A and its support frame 21B. Reference numeral 22 denotes a substrate stopper that can be moved up and down by the drive source. When the substrate stopper is lowered, the printed board P conveyed from the upstream device via the pair of conveyors 1 and 1 comes into contact with the substrate stopper 22 and stops.

27は前記第1取付体18に固定された一対の支持体23に揺動可能に支持された基板押え部材で、詳述すると、この基板押え部材27は一対の前記支持体23に支持された支軸24に回動可能に設けられたその揺動体25A、25Bに支持された支軸26により揺動可能に支持され、前記第1取付体18に固定されたシリンダ28のロッドが伸びて一方の前記揺動体25Aが押しやられると前記支軸24を支点として基板押え部材27が揺動して、下方へ移動して前記揺動体25A、25Bに支持された支軸26に間隔を存して回動可能に支持された複数のローラー29がプリント基板Pを上方から吸着治具3に押圧可能となる。   Reference numeral 27 denotes a substrate pressing member that is swingably supported by a pair of support bodies 23 fixed to the first mounting body 18. Specifically, the substrate pressing member 27 is supported by the pair of support bodies 23. The rod of the cylinder 28 fixed to the first mounting body 18 is supported by the support shaft 26 supported by the swing bodies 25A and 25B rotatably provided on the support shaft 24. When the oscillating body 25A is pushed, the substrate pressing member 27 oscillates with the support shaft 24 as a fulcrum, and moves downward so that there is an interval between the support shaft 26 supported by the oscillating bodies 25A and 25B. The plurality of rollers 29 supported so as to be rotatable can press the printed circuit board P against the suction jig 3 from above.

以上の構成により、以下スクリーン印刷機の動作について説明する。運転スタートボタンを押すと、上流側装置より一対の搬送コンベア1、1を介して搬送されてきたプリント基板Pが下降した基板ストッパ22に当接して停止する(図1、図2及び図3参照)。   The operation of the screen printing machine having the above configuration will be described below. When the operation start button is pressed, the printed circuit board P transported from the upstream apparatus via the pair of transport conveyors 1 and 1 comes into contact with the lowered substrate stopper 22 and stops (see FIGS. 1, 2 and 3). ).

次に、図示しない駆動源の駆動により吸着治具3が上昇して、搬送コンベア1、1上のプリント基板Pを上昇させ、この上昇後に図示しない駆動源により基板クランプ機構5の可動部7の押圧体7Bが前方へ移動し、プリント基板Pを固定部6に押圧してクランプする。そして、シリンダ28が作動して伸びたロッドが支軸24を支点として基板押え部材27を揺動させる。即ち、シリンダ28のロッドが伸びると、一方の前記揺動体25Aを押しやって前記支軸24を支点として基板押え部材27を揺動させ、前記揺動体25A、25Bに支持された支軸26に設けられた複数のローラー29が下方へ移動してプリント基板Pを上方から吸着治具3に押圧する(図4参照)。   Next, the suction jig 3 is raised by driving a drive source (not shown) to raise the printed circuit board P on the conveyors 1 and 1, and after this lift, the movable portion 7 of the substrate clamp mechanism 5 is moved by the drive source (not shown). The pressing body 7B moves forward, and the printed circuit board P is pressed against the fixing portion 6 and clamped. Then, the rod 28 extended by the operation of the cylinder 28 swings the substrate pressing member 27 with the support shaft 24 as a fulcrum. That is, when the rod of the cylinder 28 is extended, one of the swinging bodies 25A is pushed to swing the substrate pressing member 27 with the support shaft 24 as a fulcrum, and is provided on the support shaft 26 supported by the swinging bodies 25A and 25B. The plurality of rollers 29 moved downward to press the printed circuit board P against the suction jig 3 from above (see FIG. 4).

この基板押え部材27の揺動後に、駆動モータ11の駆動によりネジ軸10が回動し、移動テーブル14下面のスライド15がガイド16に沿って摺動して移動テーブル14に固定された第1取付体18に固定された第2取付体19もナット13及び移動テーブル14と共にプリント基板Pの搬送方向と直交する方向に移動する。   After the substrate holding member 27 is swung, the screw shaft 10 is rotated by the drive of the drive motor 11, and the slide 15 on the lower surface of the moving table 14 slides along the guide 16 and is fixed to the moving table 14. The second mounting body 19 fixed to the mounting body 18 also moves in the direction orthogonal to the transport direction of the printed circuit board P together with the nut 13 and the moving table 14.

そして、この移動により、複数のローラー29がプリント基板Pをほぼ全域にわたり押圧しながら移動することとなるので、プリント基板Pに多少の反りがあっても、吸着治具3の天面にプリント基板Pを密着させることができる。この場合、ローラー29の押圧移動動作は往復動作をしてもよいが、1プリント基板P当り1往動作のみの交互動作を行う。   As a result of this movement, the plurality of rollers 29 move while pressing the printed circuit board P over almost the entire area, so that even if the printed circuit board P is slightly warped, the printed circuit board is placed on the top surface of the suction jig 3. P can be adhered. In this case, the pressing and moving operation of the roller 29 may be a reciprocating operation, but an alternating operation of only one forward operation per printed board P is performed.

このように支持した状態で、認識カメラ20も前述したように、駆動モータ11の駆動により移動することができ、スクリーン版21及びプリント基板Pに付された位置合わせマークが撮像される。   In this supported state, the recognition camera 20 can also be moved by driving the drive motor 11 as described above, and the alignment marks attached to the screen plate 21 and the printed board P are imaged.

次いで、認識カメラ20及び基板押え部材27などを図示しない駆動源の駆動により後退させ、認識カメラ20により撮像された画像を認識処理装置が認識処理して、算出されたプリント基板Pと印刷スクリーン21Aとの位置ずれ量に基づいて制御装置(図示せず)が吸着治具3やスクリーン版21を補正移動させ、更に駆動源の駆動により吸着治具3を印刷位置(印刷レベル)まで上昇させる(図5参照)。   Next, the recognition camera 20 and the substrate pressing member 27 are moved backward by driving a drive source (not shown), and the recognition processing device recognizes the image picked up by the recognition camera 20, and the calculated printed circuit board P and the printing screen 21A. A control device (not shown) corrects and moves the suction jig 3 and the screen plate 21 based on the positional deviation amount, and further raises the suction jig 3 to the printing position (print level) by driving the drive source ( (See FIG. 5).

この吸着治具3の上昇及び図示しないスキージによりスクリーン21Aにプリント基板Pを押し付けて、スキージがスクリーン21Aの上面を摺動することにより、印刷スクリーン21A上に供給されているクリーム半田をプリント基板P上にパターン印刷する。この印刷が終了すると、吸着治具3の吸引動作を停止して版離れ動作を行い、バックアップベース2と共に吸着治具3が下降し、可動部7の押圧体7Bが固定部6から離間する方向に移動してプリント基板Pのクランプが解除される。次いで、コンベヤ1、1が駆動されてプリント基板Pがクランプ位置から排出されて、下流側装置に受け渡される。このような上述した動作が繰り返されて、多数枚のプリント基板Pに順次印刷処理が施されてゆく。   The printed board P is pressed against the screen 21A by the ascent of the suction jig 3 and a squeegee (not shown), and the squeegee slides on the upper surface of the screen 21A. Print a pattern on top. When the printing is finished, the suction operation of the suction jig 3 is stopped and the plate separation operation is performed. The suction jig 3 is lowered together with the backup base 2, and the pressing body 7 </ b> B of the movable portion 7 is separated from the fixed portion 6. The clamp of the printed circuit board P is released. Next, the conveyors 1 and 1 are driven, and the printed circuit board P is discharged from the clamp position and delivered to the downstream apparatus. Such an operation described above is repeated, and printing processing is sequentially performed on a large number of printed circuit boards P.

なお、前述したように、搬送コンベア1、1上のプリント基板Pを上昇させ、この上昇後に図示しない駆動源により基板クランプ機構5の可動部7の押圧体7Bが前方へ移動し、プリント基板Pを固定部6に押圧してクランプし、吸着治具3を印刷位置(印刷レベル)まで上昇させたが、このときのスクリーン21Aを前記固定部6及び可動部7の押圧体7Bに開設された複数の吸着孔を介して吸引して、プリント基板Pとスクリーン21Aとをより確実に密着させてもよい。   As described above, the printed circuit board P on the conveyors 1 and 1 is raised, and after this ascent, the pressing body 7B of the movable portion 7 of the substrate clamping mechanism 5 is moved forward by a drive source (not shown), and the printed circuit board P Was pressed to the fixed portion 6 and clamped, and the suction jig 3 was raised to the printing position (printing level). At this time, the screen 21A was opened on the pressing body 7B of the fixed portion 6 and the movable portion 7. The printed circuit board P and the screen 21A may be more reliably brought into close contact with each other by suction through a plurality of suction holes.

以上本発明の実施形態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 above-described alternatives, modifications, or modifications. It includes modifications.

上流側装置からプリント基板が搬送されて来る状態のスクリーン印刷機の左側面図である。FIG. 6 is a left side view of the screen printing machine in a state where a printed circuit board is conveyed from an upstream device. スクリーン印刷機の正面図である。It is a front view of a screen printing machine. 基板ストッパが下降した状態を示すスクリーン印刷機の正面図である。It is a front view of the screen printing machine which shows the state which the board | substrate stopper fell. 吸着治具が上昇し、基板押え部材が揺動した状態を示すスクリーン印刷機の正面図である。It is a front view of the screen printing machine which shows the state in which the suction jig was raised and the substrate pressing member was swung. 印刷のために吸着治具が上昇した状態を示すスクリーン印刷機の正面図である。It is a front view of the screen printer which shows the state where the adsorption jig rose for printing.

符号の説明Explanation of symbols

3 吸着治具
5 基板クランプ機構
6 固定部
7 可動部
21 スクリーン版
21A スクリーン
27 基板押え部材
29 ローラー
3 Suction Jig 5 Substrate Clamping Mechanism 6 Fixed Part 7 Movable Part 21 Screen Plate 21A Screen 27 Substrate Pressing Member 29 Roller

Claims (1)

上流側装置から搬送されてきたプリント基板を基板クランプ機構によりクランプして、基板支持台上に吸着保持した状態の前記プリント基板にスキージの移動によりスクリーン版を介してクリーム半田を塗布して印刷するスクリーン印刷機において、往復移動可能に設けられた取付体に支軸を支点として揺動可能に設けられた基板押え部材を設け、駆動源により押圧されると前記基板押え部材が揺動してその一部を構成する複数のローラーが前記基板支持台上に吸着保持した状態の前記プリント基板を上方から押圧し、且つ複数の前記ローラーが該プリント基板を上方から押圧しながら移動することを特徴とするスクリーン印刷機。 The printed circuit board conveyed from the upstream device is clamped by the substrate clamping mechanism, and the solder printed on the printed circuit board in the state of being sucked and held on the substrate support base is coated with cream solder via a screen plate and printed. In a screen printing machine, a mounting member provided so as to be capable of reciprocating movement is provided with a substrate pressing member provided so as to be swingable about a support shaft, and when pressed by a driving source, the substrate pressing member swings. A plurality of rollers constituting a part press the printed circuit board in a state of being held by suction on the substrate support base , and the plurality of rollers move while pressing the printed circuit board from above. Screen printer.
JP2005216582A 2005-07-27 2005-07-27 Screen printing machine Expired - Fee Related JP4712470B2 (en)

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JP4712470B2 true JP4712470B2 (en) 2011-06-29

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JP4884759B2 (en) * 2005-12-13 2012-02-29 ヤマハ発動機株式会社 Screen printing device
JP5391768B2 (en) * 2009-03-24 2014-01-15 凸版印刷株式会社 Printing apparatus and printing method
CN108909160A (en) * 2018-06-15 2018-11-30 阜阳市飞扬印务有限公司 A kind of printing equipment

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JPH06191013A (en) * 1992-12-25 1994-07-12 Furukawa Electric Co Ltd:The Cream solder printing machine
JPH08224854A (en) * 1995-02-21 1996-09-03 Toshiba Corp Printing device
JPH10217424A (en) * 1997-02-06 1998-08-18 Itsukou:Kk Mechanism for correcting warp of board to be printed in screen printer
JP2003034013A (en) * 2001-07-25 2003-02-04 Juki Corp Cream solder printing machine

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JPH06191013A (en) * 1992-12-25 1994-07-12 Furukawa Electric Co Ltd:The Cream solder printing machine
JPH08224854A (en) * 1995-02-21 1996-09-03 Toshiba Corp Printing device
JPH10217424A (en) * 1997-02-06 1998-08-18 Itsukou:Kk Mechanism for correcting warp of board to be printed in screen printer
JP2003034013A (en) * 2001-07-25 2003-02-04 Juki Corp Cream solder printing machine

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