JPH06328661A - Screen printer of solder for printed circuit board - Google Patents
Screen printer of solder for printed circuit boardInfo
- Publication number
- JPH06328661A JPH06328661A JP12451093A JP12451093A JPH06328661A JP H06328661 A JPH06328661 A JP H06328661A JP 12451093 A JP12451093 A JP 12451093A JP 12451093 A JP12451093 A JP 12451093A JP H06328661 A JPH06328661 A JP H06328661A
- Authority
- JP
- Japan
- Prior art keywords
- solder
- screen
- cream solder
- squeegee
- circuit board
- 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
Landscapes
- Manufacturing Of Printed Wiring (AREA)
- Screen Printers (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、印刷基板用半田スクリ
ーン印刷装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solder screen printing apparatus for printed boards.
【０００２】[0002]
【従来の技術】図２は、印刷基板用半田スクリーン印刷
装置の一従来例を示す図である。図２において、４は印
刷スクリーンであり、その下面４ｃに印刷基板１０が当
接すると共に、該印刷基板１０における半田ランドに合
わせたパターン孔４ａ，４ａ，…が形成されて成る。
又、６は自動スキージであり、スキージ板部２ａと、該
スキージ板部２ａの上端を固定して該スキージ板部２ａ
を移動させる駆動装置部２ｂとから成る。該自動スキー
ジ２は、そのスキージ板部２ａの先端縁を前記印刷スク
リーン４の上面４ｂに隙間なく接触させた状態で、且
つ、前記印刷スクリーン４の上面４ｂに存在するクリー
ム半田１１を掻きながら該印刷スクリーン４の上面４ｂ
を摺動するようになっている。前記自動スキージ２の摺
動移動が進むにつれて、前記自動スキージ２と前記印刷
スクリーン４との接触部７付近には、掻きとられたクリ
ーム半田１１が溜まって集合体１１ａとなるが、前記自
動スキージ２が摺動していくうちに、前記接続部７に溜
まったクリーム半田１１のうちから少量のクリーム半田
１１が前記パターン孔４ａ，４ａ，…に入り込んで前記
印刷基板１０の半田ランドにスクリーン印刷されるよう
になっている。2. Description of the Related Art FIG. 2 is a diagram showing a conventional example of a solder screen printing apparatus for a printed circuit board. In FIG. 2, reference numeral 4 is a printing screen, which has a lower surface 4c on which the printed board 10 abuts, and pattern holes 4a, 4a, ... Formed corresponding to solder lands on the printed board 10.
Reference numeral 6 denotes an automatic squeegee, which has a squeegee plate portion 2a and an upper end of the squeegee plate portion 2a fixed to the squeegee plate portion 2a.
And a drive unit 2b for moving the. The automatic squeegee 2 has the tip edge of the squeegee plate portion 2a in contact with the upper surface 4b of the printing screen 4 without any gap, and while scraping the cream solder 11 existing on the upper surface 4b of the printing screen 4. Upper surface 4b of the printing screen 4
Is designed to slide. As the sliding movement of the automatic squeegee 2 progresses, the scraped cream solder 11 accumulates in the vicinity of the contact portion 7 between the automatic squeegee 2 and the printing screen 4 to form an aggregate 11a. While 2 slides, a small amount of the cream solder 11 among the cream solder 11 accumulated in the connection portion 7 enters the pattern holes 4a, 4a, ... And screen-prints on the solder land of the printed board 10. It is supposed to be done.
【０００３】又、５は前記印刷基板１０を定位置に支え
る支持体である。該印刷基板用半田スクリーン印刷装置
は、図２における前記印刷スクリーン４と前記自動スキ
ージ２と前記支持体５とを具備して成っている。Reference numeral 5 is a support for supporting the printed circuit board 10 in a fixed position. The printed circuit board solder screen printing apparatus comprises the printing screen 4, the automatic squeegee 2 and the support 5 in FIG.
【０００４】尚、上記印刷基板用半田スクリーン印刷装
置においては、印刷基板１０へのクリーム半田１１のス
クリーン印刷を繰り返していくうちに、前記印刷スクリ
ーン４の上面４ｂに残る半田クリームの量が少なくなっ
ていくので、前記印刷スクリーン４の上面４ｂに新たな
クリーム半田１１を供給してやる必要がある。In the above-described solder screen printing apparatus for a printed board, the amount of solder cream remaining on the upper surface 4b of the printing screen 4 decreases as the screen printing of the cream solder 11 on the printed board 10 is repeated. Therefore, it is necessary to supply new cream solder 11 to the upper surface 4b of the printing screen 4.
【０００５】[0005]
【発明が解決しようとする課題】従来の印刷基板用半田
スクリーン印刷装置においては、印刷基板１０へのスク
リーン印刷の繰り返し回数のカウントし、該繰り返し回
数が或る一定数以上となったときにクリーム半田１１を
供給するようにしていたが、この方法によると、前回に
供給したクリーム半田１１の量により、スクリーン印刷
の繰り返し回数が或る一定数に達する以前にクリーム半
田１１が不足してしまうことがあり、最悪の場合、前記
印刷基板１０へのクリーム半田１１の印刷がかすれてし
まうという問題があった。In the conventional solder screen printing apparatus for a printed circuit board, the number of repetitions of screen printing on the printed circuit board 10 is counted, and when the number of repetitions exceeds a certain number, the cream is applied. Although the solder 11 is supplied, according to this method, the cream solder 11 runs short before the number of times the screen printing is repeated reaches a certain number depending on the amount of the cream solder 11 supplied last time. However, in the worst case, there is a problem that the printing of the cream solder 11 on the printed circuit board 10 is faint.
【０００６】本発明は上記問題点に鑑みて成されたもの
であり、その目的とするところは、印刷スクリーンの上
面に残るクリーム半田の量を常にチェック出来るように
した印刷基板用半田スクリーン印刷装置を提供すること
にある。The present invention has been made in view of the above problems, and an object of the present invention is to provide a solder screen printing apparatus for a printed board capable of always checking the amount of cream solder remaining on the upper surface of the printing screen. To provide.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
に成された本発明は、印刷基板が下面に当接し且つ該印
刷基板における半田ランドに合わせたパターン孔が形成
されて成る印刷スクリーンと、前記印刷スクリーンの上
面に存在するクリーム半田を掻きながら該印刷スクリー
ンの上面を摺動する自動スキージと、を具備して成る印
刷基板用半田スクリーン印刷装置において、前記自動ス
キージと前記印刷スクリーンとの接触部付近に溜まった
クリーム半田の集合体までの距離を測定する非接触型の
距離センサーを、前記自動スキージに配設したことを特
徴とするものである。SUMMARY OF THE INVENTION The present invention, which was conceived to solve the above-mentioned problems, provides a printing screen comprising a printed board which is in contact with a lower surface thereof and which is provided with a pattern hole corresponding to a solder land on the printed board. A solder screen printing apparatus for a printed circuit board, comprising: an automatic squeegee that slides on the upper surface of the printing screen while scraping cream solder existing on the upper surface of the printing screen; The automatic squeegee is characterized in that a non-contact type distance sensor for measuring the distance to the aggregate of cream solder accumulated in the vicinity of the contact portion is arranged on the automatic squeegee.
【０００８】[0008]
【作用】本発明によれば、前記印刷スクリーンの上面に
残るクリーム半田の残量をチェックすることが出来る。According to the present invention, the amount of cream solder remaining on the upper surface of the printing screen can be checked.
【０００９】[0009]
【実施例】以下に本発明を、その実施例を示す図面に基
づいて説明する。尚、前記従来例において対応する部分
については同一符号を付してここでは説明を省略する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing its embodiments. The corresponding parts in the conventional example are designated by the same reference numerals, and the description thereof will be omitted here.
【００１０】図１は、本発明に係る印刷基板用半田スク
リーン印刷装置の一実施例を示す要部側断面図である。
本実施例の印刷基板用半田スクリーン印刷装置は、前記
従来例に示した印刷基板用半田スクリーン印刷装置にお
いて、非接触型の距離センサー１を、前記自動スキージ
２の駆動装置部２ｂに固定配設したことを特徴とするも
のである。FIG. 1 is a side sectional view of an essential part showing an embodiment of a solder screen printing apparatus for a printed board according to the present invention.
In the solder screen printing apparatus for a printed circuit board of the present embodiment, in the solder screen printing apparatus for a printed circuit board shown in the conventional example, the non-contact type distance sensor 1 is fixedly arranged on the drive unit 2b of the automatic squeegee 2. It is characterized by having done.
【００１１】前記距離センサー１は、非検知体（ここで
は前記自動スキージ２と前記印刷スクリーン４との接触
部７付近に溜まったクリーム半田１１の集合体１１ａ）
に超音波を送波する送波器と、前記非検知体における前
記超音波の反射波を受波する受波器と、を組合せて構成
したもので、送波器からの超音波の送波開始から受波器
における反射波の受波開始までの時間、即ち、該距離セ
ンサー１の配設位置と、前記自動スキージ２と前記印刷
スクリーン４との接触部７付近に溜まったクリーム半田
１１の集合体１１ａとの間の超音波の往復時間を、前記
自動スキージ２の移動開始直前および移動中および移動
終了時に測定し、該往復時間をもとに、該距離センサー
１から前記クリーム半田１１の集合体１１ａまでの距離
ｙを割り出す。又、該距離ｙに対してしきい値ｙ１を設
定しておき、前記距離ｙが該しきい値ｙ１を上回ったと
きに報知スピーカーなどにより報知音を鳴らすようにし
ておく。The distance sensor 1 is a non-detecting body (here, an assembly 11a of cream solder 11 accumulated near a contact portion 7 between the automatic squeegee 2 and the printing screen 4).
And a wave receiver for receiving the reflected wave of the ultrasonic wave in the non-detection body, and a wave transmitter for transmitting the ultrasonic wave from the wave transmitter. The time from the start to the start of reception of the reflected wave in the wave receiver, that is, the position where the distance sensor 1 is arranged and the cream solder 11 accumulated near the contact portion 7 between the automatic squeegee 2 and the printing screen 4. The round-trip time of ultrasonic waves with the aggregate 11a is measured immediately before the start of movement of the automatic squeegee 2, at the time of movement, and at the end of movement, and based on the round-trip time, the distance sensor 1 to the cream solder 11 moves. The distance y to the aggregate 11a is calculated. Further, a threshold value y1 is set for the distance y, and when the distance y exceeds the threshold value y1, a notification sound is emitted from a notification speaker or the like.
【００１２】即ち、本実施例の印刷基板用半田スクリー
ン印刷装置においては、前記距離センサー１により、前
記自動スキージ２のスキージ板部２ａと前記印刷スクリ
ーン４との接触部７付近に溜まった前記クリーム半田１
１の集合体１１ａの高さを知ることが出来、それによ
り、前記印刷スクリーン４の上面に残るクリーム半田１
１の残量を測定することが出来る。そして、前記印刷ス
クリーン４の上面に残るクリーム半田１１の残量が或る
一定以下にまで少なくなったときには、前記報知音が鳴
るようになっているので、該報知音が鳴ったときに前記
印刷スクリーン４の上面４ｂに新たなクリーム半田１１
を供給するようにする。That is, in the solder screen printing apparatus for a printed circuit board of the present embodiment, the cream accumulated in the vicinity of the contact portion 7 between the squeegee plate portion 2a of the automatic squeegee 2 and the printing screen 4 by the distance sensor 1 is used. Solder 1
It is possible to know the height of the aggregate 11a of the cream solder 1 and the cream solder 1 that remains on the upper surface of the printing screen 4.
The remaining amount of 1 can be measured. When the remaining amount of the cream solder 11 remaining on the upper surface of the printing screen 4 is reduced to a certain level or less, the notification sound is made to sound. Therefore, when the notification sound is made, the printing is performed. New cream solder 11 on the upper surface 4b of the screen 4
To supply.
【００１３】以上の如く構成した本発明によれば、前記
印刷スクリーン４の上面４ｂに残るクリーム半田１１の
残量をチェックすることが出来、前記印刷スクリーン４
へのクリーム半田１１の供給時期を正確に知ることが出
来ると共に、クリーム半田１１の不足に伴う印刷基板１
０へのクリーム半田１１の印刷かすれなどを防止するこ
とが出来、常に安定した印刷品質を確保することが出来
る。According to the present invention configured as described above, the remaining amount of the cream solder 11 remaining on the upper surface 4b of the printing screen 4 can be checked, and the printing screen 4 can be checked.
It is possible to accurately know the time when the cream solder 11 is supplied to the printed circuit board 1 and the printed circuit board 1 due to the shortage of the cream solder 11.
It is possible to prevent the print solder paste 11 from being printed on the surface of the printed circuit board 0, and to always ensure stable print quality.
【００１４】[0014]
【発明の効果】以上の如く構成した本発明によれば、前
記印刷スクリーンの上面に残るクリーム半田の残量をチ
ェックすることが出来、前記印刷スクリーンへのクリー
ム半田の供給時期を正確に知ることが出来る。According to the present invention configured as described above, it is possible to check the remaining amount of the cream solder remaining on the upper surface of the printing screen, and to accurately know the supply time of the cream solder to the printing screen. Can be done.
【図１】本発明一実施例を示す要部側断面図。FIG. 1 is a side sectional view of an essential part showing an embodiment of the present invention.
【図２】従来例を示す要部側断面図。FIG. 2 is a side sectional view of a main part showing a conventional example.
１ 距離センサー ２ 自動スキージ ２ａ スキージ板部 ２ｂ 駆動装置部 ４ 印刷スクリーン ７ 自動スキージ２と印刷スクリーン４との接触部 ４ａ 印刷スクリーンの上面 ４ｂ 印刷スクリーンの下面 １０ 印刷基板 １１ クリーム半田 １１ａ クリーム半田１１の集合体 1 distance sensor 2 automatic squeegee 2a squeegee plate part 2b drive device part 4 printing screen 7 contact part between the automatic squeegee 2 and the printing screen 4a upper surface of the printing screen 4b lower surface of the printing screen 10 printed board 11 cream solder 11a cream solder 11 Aggregation
Claims (1)
における半田ランドに合わせたパターン孔が形成されて
成る印刷スクリーンと、前記印刷スクリーンの上面に存
在するクリーム半田を掻きながら該印刷スクリーンの上
面を摺動する自動スキージと、を具備して成る印刷基板
用半田スクリーン印刷装置において、 前記自動スキージと前記印刷スクリーンとの接触部付近
に溜まったクリーム半田の集合体までの距離を測定する
非接触型の距離センサーを、前記自動スキージに配設し
たことを特徴とする印刷基板用半田スクリーン印刷装
置。1. A printing screen in which a printed board is in contact with a lower surface and pattern holes corresponding to solder lands on the printed board are formed, and the cream solder existing on the upper surface of the printing screen is scratched to scratch the printed screen. A solder screen printing device for a printed circuit board, comprising an automatic squeegee that slides on an upper surface, and measures a distance to an aggregate of cream solder accumulated near a contact portion between the automatic squeegee and the printing screen. A solder screen printing device for a printed circuit board, wherein a contact type distance sensor is arranged on the automatic squeegee.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12451093A JPH06328661A (en) | 1993-05-26 | 1993-05-26 | Screen printer of solder for printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12451093A JPH06328661A (en) | 1993-05-26 | 1993-05-26 | Screen printer of solder for printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06328661A true JPH06328661A (en) | 1994-11-29 |
Family
ID=14887279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12451093A Pending JPH06328661A (en) | 1993-05-26 | 1993-05-26 | Screen printer of solder for printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06328661A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013114479A1 (en) * | 2012-02-02 | 2013-08-08 | パナソニック株式会社 | Screen printing apparatus and method for detecting remaining amount of paste |
| US20160059542A1 (en) * | 2014-09-01 | 2016-03-03 | Panasonic Intellectual Property Management Co., Ltd. | Screen printing apparatus and screen printing method |
-
1993
- 1993-05-26 JP JP12451093A patent/JPH06328661A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013114479A1 (en) * | 2012-02-02 | 2013-08-08 | パナソニック株式会社 | Screen printing apparatus and method for detecting remaining amount of paste |
| JP2013158939A (en) * | 2012-02-02 | 2013-08-19 | Panasonic Corp | Screen printing device and method for detecting remaining amount of paste |
| GB2513204A (en) * | 2012-02-02 | 2014-10-22 | Panasonic Corp | Screen printing apparatus and method for detecting remaining amount of paste |
| US9016197B2 (en) | 2012-02-02 | 2015-04-28 | Panasonic Intellectual Property Management Co., Ltd. | Screen printer and method for detecting amount of residual paste |
| US20160059542A1 (en) * | 2014-09-01 | 2016-03-03 | Panasonic Intellectual Property Management Co., Ltd. | Screen printing apparatus and screen printing method |
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