JP3379995B2 - Coating agent coating device - Google Patents
Coating agent coating deviceInfo
- Publication number
- JP3379995B2 JP3379995B2 JP15825793A JP15825793A JP3379995B2 JP 3379995 B2 JP3379995 B2 JP 3379995B2 JP 15825793 A JP15825793 A JP 15825793A JP 15825793 A JP15825793 A JP 15825793A JP 3379995 B2 JP3379995 B2 JP 3379995B2
- Authority
- JP
- Japan
- Prior art keywords
- coating
- application
- adhesive
- image
- illumination
- 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 - Fee Related
Links
Landscapes
- Coating Apparatus (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、電子回路基板上に電子
部品を実装する際、電子回路基板上に電子部品を固定す
るために、電子回路基板の所定の位置にあらかじめ接着
剤を塗布を行う接着剤塗布装置に関する。
【０００２】
【従来の技術】近年、電子製品の小型化、軽量化にとも
ない、電子部品の高精度装着が求められており、接着剤
塗布装置においては、所定の塗布量通りに接着剤を電子
回路基板上に塗布することが求められてきている。
【０００３】前記接着剤の塗布において、塗布量を所定
の量とするため、塗布時の接着剤にかける空圧力およ
び時間をあらかじめ定められた値で行う方法や、試し
塗布（以下、捨て打ちと呼ぶ）を装置上で行い、捨て打
ちした接着剤を上方より撮像部により撮像し（図５参
照）、その面積値から塗布量を検出して所定の塗布量と
なっているかを判定し、塗布時の接着剤にかける空圧力
および時間をフィードバック制御する方法が行われてい
た。なお図５において、２３はカメラ、２４はレンズ、
２５は照明で、これらは接着剤認識部の撮像部を構成す
る。２６は接着剤を捨て打ちするための捨て打ちテープ
で、２７は捨て打ちされた接着剤である。撮像部が撮像
した画像が２８である。前記の方法により接着剤塗布
装置の稼働時間に対する接着剤塗布量のばらつきの監視
が行われ、ある程度の一定化ができるようになった。
【０００４】
【発明が解決しようとする課題】しかしながら、前記従
来の接着剤装置では、捨て打ちされた接着剤２７を上方
からのみ撮像しているため、接着剤２７の種類の違いに
よる粘度の差、および接着剤２７の温度の変化などによ
り、塗布した場合の立体的な形状がばらつくことがあ
り、平面的な面積計測のみでは判定できない塗布量ばら
つきが生じる場合がある。すなわち、図６（ａ）（ｂ）
のように検出値＝実際の塗布量の場合は問題がないが、
図６（ｃ）（ｄ）のように検出値≠実際の塗布量の場
合、塗布形状が予想と異なる。このことは、最近の表面
実装電子部品が微細化してきていることに対して問題と
なる。たとえば、塗布量が所定の量よりも少なければ、
実装した電子部品の固定力が不足し、半田付け工程の際
に電子部品がズレを生じてしまったり、塗布量が多けれ
ば、電子部品の電極部と電子回路基板上の電極との間に
接着剤が入り込み最終的に接触不良を起こす場合もあ
る。
【０００５】
【課題を解決するための手段】そこで本発明の塗布装置
は、捨て打ち塗布面上方に、照明部を備えた撮像部を移
動させ、前記照明部にて捨て打ち塗布面上方から照光
し、この照光の反射光により得られる前記塗布剤の上方
の画像と、前記塗布剤の側方に塗布剤を間に挟んで２枚
の反射鏡を配置し、一方の反射鏡は前記照明部からの照
明光を反射して塗布剤の側面に照明し、他方の反射鏡は
前記照明光のうち前記塗布剤に遮られなかった透過光を
前記撮像部へ反射させることで得られる前記塗布剤のシ
ルエットを示す側方の画像と、を前記撮像部の一視野に
撮像する構成とする。
【０００６】
【作用】上記構成の塗布装置は、塗布剤上方からの画像
と塗布剤側方からの画像を撮像し、塗布剤の粘度の差や
温度変化による立体的な塗布形状変化を認識することが
でき、正確な塗布量検出が行われることとなる。
【０００７】
【実施例】以下、本発明の塗布装置の一実施例を説明す
る。図１は本発明の一実施例の接着剤塗布装置を示し、
図中の１は撮像部のカメラ、２は撮像部のレンズ、３は
撮像部の照明部であり、これらの構成要素よりなる撮像
部は、接着剤５を捨て打ちした捨て打ち部４の上方に配
設されている。前記捨て打ち部４の両側には一対の反射
鏡６と７を配設してあり、一方の反射鏡６は、撮像部か
らの照明光を反射し接着剤５の側方から照明を行ない、
他方の反射鏡７は、接着剤５の側面の画像を撮像部に反
射するようにしている。
【０００８】上記構成において、図２に示すように接着
剤５の上方からの画像８と、接着剤５の側方からの画像
９を撮像し、接着剤５の塗布形状変化を認識するととも
に、正確な塗布量検出が行なわれる。
【０００９】なお、前記撮像部の視野サイズと反射鏡の
位置関係を適切にとれば、１視野内で上方からの画像と
側方からの画像を撮像でき、認識処理時間の難点からも
撮像部を移動することなく、２方向の画像を処理するこ
とができるため、従来の認識処理に対し処理時間が多大
に増加することがない。
【００１０】本実施例である接着剤塗布装置の動作を図
３のフローチャートにより説明する。まず、所定のデー
タにより塗布に使用する接着剤塗布ノズルを選択し、あ
らかじめ定められた設定により捨て打ちを行う（１
０）。そして撮像部を捨て打ちした位置の所定の位置に
移動する（１１）。撮像部が移動完了したならば、撮像
部により接着剤の上方からの画像と側方からの画像を画
像認識部により撮像する（１２）。撮像した２方向から
の画像を画像認識部で処理し、正確に接着剤塗布量を検
出する（１３）。塗布量を検出したならば、あらかじめ
定められた設定値の塗布量の許容範囲内であるか判定し
（１４）、許容範囲内であれば電子回路基板上の所定の
位置にこのままの塗布条件で接着剤塗布を行う（１
５）。許容範囲外であれば、許容値に対し塗布量が多い
のであれば塗布量が減るように条件を変えて、許容値に
対し塗布量が少ないのであれば塗布量が増えるように条
件を変えて、再度捨て打ちを行い、塗布量が許容範囲内
に入るまで一連の動作を繰り返す。ただし、所定の回数
をこえて動作を繰り返しても塗布量が許容範囲内に入ら
なければ異常と判断して警報を発して操作者に知らせる
ようになっている。
【００１１】同一ノズルでの接着剤塗布ブロックが終了
するか、または所定の回数以上同一ノズルで塗布を繰り
返した場合は、再び（１０）からの動作を繰り返し、接
着剤塗布量を監視し、フィードバック制御を行うことと
なり、正確に設定量通りの塗布が行われる。
【００１２】図４は本発明の他の実施例を示し、このも
のは複数点の接着剤塗布に対応させるものであり、捨て
打ち部１８の上に複数の接着剤１７を捨て打ちし、この
捨て打ち位置に対し、複数の反射鏡１９〜２２を配置
し、横２点や縦２点の塗布および４点塗布の場合に対し
ても接着剤塗布面側方の画像が撮像できる構成をとって
いる。なお、撮像部の配置は図１と同じである。このも
のも前述の実施例と同様の作用と効果が得られる。前記
実施例は塗布材料として接着剤を用いているが、接着剤
以外の塗布材料であっても本発明の塗布装置は有効に機
能するものである。
【００１３】
【発明の効果】以上の実施例の説明より明らかなよう
に、本発明の塗布装置によれば、捨て打ちした塗布剤
を、塗布面の上方からの画像と、塗布面の側方からの画
像とを撮像し、塗布量を検出するための、塗布剤の種類
の違いによる粘度の差、および塗布剤の温度の変化など
により、塗布した塗布剤に立体的な形状のはらつきが発
生し、平面的な面積計測のみでは判定できない塗布量ば
らつきが生じた場合でも、正確に塗布量を検出して塗布
条件にフィードバックを行って、常に設定した塗布量で
の塗布が行われる。
【００１４】また、本発明の塗布装置の構成において塗
布剤の塗布形状を画像認識部で検査する処理を追加する
ことで、塗布状態管理を行うことも可能であり、さらに
高品質な塗布を行うことも可能となる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of mounting an electronic component on an electronic circuit board in order to fix the electronic component on the electronic circuit board. The present invention relates to an adhesive application device that applies an adhesive to a predetermined position in advance. 2. Description of the Related Art In recent years, as electronic products have become smaller and lighter, it has been required to mount electronic components with high precision. There is a demand for application on circuit boards. [0003] In the application of the adhesive, in order to set the amount of application to a predetermined amount, a method in which the air pressure and the time applied to the adhesive at the time of application are set to predetermined values, a test application (hereinafter referred to as a discarding and Is performed on the apparatus, and the discarded adhesive is imaged from above by an imaging unit (see FIG. 5), and the application amount is detected from the area value to determine whether or not the predetermined application amount is obtained. A method of feedback controlling the air pressure and time applied to the adhesive at the time has been performed. In FIG. 5, 23 is a camera, 24 is a lens,
Reference numeral 25 denotes illuminations, which constitute an imaging unit of the adhesive recognition unit. Reference numeral 26 denotes a discard tape for discarding the adhesive, and reference numeral 27 denotes the discarded adhesive. The image captured by the imaging unit is 28. According to the method described above, the variation of the adhesive application amount with respect to the operation time of the adhesive application device is monitored, and it is possible to stabilize the application amount to some extent. [0004] However, in the conventional adhesive device, since the image of the discarded adhesive 27 is taken only from above, the difference in viscosity due to the difference in the type of the adhesive 27 is considered. , And a change in the temperature of the adhesive 27, the three-dimensional shape of the applied adhesive may vary, and a variation in the applied amount that cannot be determined only by planar area measurement may occur. That is, FIGS. 6A and 6B
There is no problem when the detected value = actual application amount like
As shown in FIGS. 6C and 6D, when the detection value ≠ the actual application amount, the application shape is different from the expected. This poses a problem with the recent miniaturization of surface-mounted electronic components. For example, if the application amount is less than the predetermined amount,
Insufficient fixing force of the mounted electronic components, causing the electronic components to shift during the soldering process, or if the amount of coating is large, bonding between the electrodes of the electronic components and the electrodes on the electronic circuit board In some cases, the agent may enter and cause poor contact. [0005] In view of the above, the coating apparatus of the present invention moves an image pickup section provided with an illuminating section above the throw-away application surface, and illuminates the above-mentioned lighting section from above the throw-away application surface. And above the coating agent obtained by the reflected light of this illumination.
Image and two sheets with the coating agent sandwiched between the coating agents
Reflectors, one of which is illuminated by the illumination unit.
Reflects bright light and illuminates the side of the coating material, while the other mirror
Of the illumination light, the transmitted light not blocked by the coating agent.
The coating agent obtained by reflecting the light to the imaging unit
And a lateral image showing a roulette in one field of view of the imaging unit.
It is configured to take an image . The coating apparatus having the above configuration captures an image from above the coating material and an image from the side of the coating material, and recognizes a three-dimensional change in the coating shape due to a difference in viscosity of the coating material and a change in temperature. As a result, accurate application amount detection can be performed. An embodiment of the coating apparatus according to the present invention will be described below. FIG. 1 shows an adhesive application device according to an embodiment of the present invention,
In the figure, reference numeral 1 denotes a camera of an imaging unit, 2 denotes a lens of the imaging unit, 3 denotes an illumination unit of the imaging unit, and an imaging unit including these components is disposed above a disposal unit 4 where the adhesive 5 is disposed. It is arranged in. A pair of reflecting mirrors 6 and 7 are disposed on both sides of the discarding unit 4, and one reflecting mirror 6 reflects illumination light from the imaging unit and illuminates from the side of the adhesive 5,
The other reflecting mirror 7 reflects an image of the side surface of the adhesive 5 to the imaging unit. In the above configuration, as shown in FIG. 2, an image 8 from above the adhesive 5 and an image 9 from the side of the adhesive 5 are taken to recognize a change in the applied shape of the adhesive 5, Accurate application amount detection is performed. If the visual field size of the image pickup unit and the positional relationship between the reflecting mirrors are properly set, an image from above and an image from the side can be picked up in one field of view. Since the image in two directions can be processed without moving the image, the processing time does not greatly increase compared to the conventional recognition processing. The operation of the adhesive application device according to the present embodiment will be described with reference to the flowchart of FIG. First, an adhesive application nozzle to be used for application is selected based on predetermined data, and discarding is performed according to a predetermined setting (1).
0). Then, the image pickup unit is moved to a predetermined position where it was thrown away (11). When the movement of the imaging unit is completed, the image recognition unit captures an image from above the adhesive and an image from the side by the image recognition unit (12). The captured images from two directions are processed by the image recognition unit, and the amount of adhesive applied is detected accurately (13). If the application amount is detected, it is determined whether the application amount is within the allowable range of the predetermined set value (14). If the application amount is within the allowable range, it is placed at a predetermined position on the electronic circuit board under the application condition as it is. Apply adhesive (1
5). If it is out of the allowable range, change the condition so that the application amount decreases if the application amount is larger than the allowable value, and change the condition so that the application amount increases if the application amount is smaller than the allowable value. , And a series of operations are repeated until the application amount falls within the allowable range. However, if the application amount does not fall within the allowable range even if the operation is repeated more than a predetermined number of times, it is determined that there is an abnormality and a warning is issued to notify the operator. When the adhesive application block with the same nozzle is completed, or when the application with the same nozzle is repeated a predetermined number of times or more, the operation from (10) is repeated again to monitor the adhesive application amount, and to perform feedback. The control is performed, and the coating is performed exactly according to the set amount. FIG. 4 shows another embodiment of the present invention, which corresponds to the application of a plurality of adhesives. A plurality of reflecting mirrors 19 to 22 are arranged at the abandoning position so that an image on the side of the adhesive application surface can be captured even in the case of two-point or two-point coating and four-point coating. ing. Note that the arrangement of the imaging units is the same as in FIG. In this case, the same operation and effect as those of the above embodiment can be obtained. Although the above embodiment uses an adhesive as a coating material, the coating apparatus of the present invention functions effectively even with a coating material other than the adhesive. As is clear from the above description of the embodiment, according to the coating apparatus of the present invention, the coating material which has been thrown away is imaged from above the coating surface and the side of the coating surface. The three-dimensional shape of the applied coating material fluctuates due to differences in viscosity due to differences in the type of coating material and changes in the temperature of the coating material to detect the amount of coating and to detect the amount of coating. Even when this occurs, even if the application amount variation cannot be determined only by planar area measurement, the application amount is accurately detected, and the application conditions are fed back, so that the application is always performed at the set application amount. Further, in the configuration of the coating apparatus of the present invention, by adding a process of inspecting the coating shape of the coating agent by the image recognition unit, it is possible to manage the coating state, and to perform higher quality coating. It is also possible.
【図面の簡単な説明】
【図１】（ａ）は本発明の一実施例の接着剤塗布装置の
塗布量認識部の側面図
（ｂ）は同要部平面図
【図２】同接着剤塗布装置により撮像した接着剤の捨て
打ち画像を示した説明図
【図３】同接着剤塗布装置の動作の流れを示したフロー
チャート
【図４】本発明の他の実施例の接着剤塗布装置の要部平
面図
【図５】従来の接着剤塗布装置の塗布量認識部の側面図
【図６】同接着剤塗布装置における問題発生時の画像例
を示した図
【符号の説明】
１ 撮像部のカメラ
２ 撮像部のレンズ
３ 撮像部の照明部
４ 捨て打ち部（捨て打ちテープ）
５ 塗布された接着剤
６ 反射鏡（照明側）
７ 反射鏡（撮像側）
８ 画像（接着剤上方画像）
９ 画像（接着剤側方画像）BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a side view of an application amount recognition unit of an adhesive application device according to one embodiment of the present invention, and FIG. FIG. 3 is an explanatory view showing an image of the adhesive being thrown away shot by the coating apparatus. FIG. 3 is a flowchart showing the flow of operation of the adhesive coating apparatus. FIG. 4 is a view showing an adhesive coating apparatus according to another embodiment of the present invention. Main part plan view [FIG. 5] Side view of a coating amount recognition unit of the conventional adhesive coating device [FIG. 6] Diagram showing an example of an image when a problem occurs in the adhesive coating device [Description of reference numerals] 1 Imaging unit Camera 2 Lens of imaging unit 3 Illumination unit of imaging unit 4 Discarding unit (disposal tape) 5 Adhesive applied 6 Reflecting mirror (illumination side) 7 Reflecting mirror (imaging side) 8 Image (adhesive upper image) 9 images (adhesive side images)
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−307470（ＪＰ，Ａ) 特開 平２−277573（ＪＰ，Ａ) 特開 平５−115822（ＪＰ，Ａ) 特開 平５−115823（ＪＰ，Ａ) 特開 昭54−112670（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B05C 5/00 H05K 3/34 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-307470 (JP, A) JP-A-2-277573 (JP, A) JP-A-5-115822 (JP, A) JP-A-5-115822 115823 (JP, A) JP-A-54-112670 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B05C 5/00 H05K 3/34
Claims (1)
像認識装置により認識し、 あらかじめ定められた塗布量になっていることを確認し
てから、被塗布物体の所定の位置に塗布剤を塗布する塗
布装置において、 捨て打ち塗布面上方に、照明部を備えた撮像部を移動さ
せ、 前記照明部にて捨て打ち塗布面上方から照光し、 この照光の反射光により得られる前記塗布剤の上方の画
像と、 前記塗布剤の側方に塗布剤を間に挟んで２枚の反射鏡を
配置し、 一方の反射鏡は前記照明部からの照明光を反射して塗布
剤の側面に照明し、 他方の反射鏡は前記照明光のうち前記塗布剤に遮られな
かった透過光を前記撮像部へ反射させることで得られる
前記塗布剤のシルエットを示す側方の画像と、 を前記撮像部の一視野に撮像する 塗布剤の塗布装置。(57) [Claims] [Claim 1] An application recognizing device that has been discarded and applied at a predetermined position is recognized by an image recognition device, and after confirming that the application amount is a predetermined application amount, the coating amount is determined. In an application device for applying an application agent to a predetermined position of an application object, an imaging unit having an illumination unit is moved above a discarded application surface.
So, illuminating City from purging coated surface upward at the illumination section, the upper picture of the coating agent obtained by the reflected light of the illumination
An image and two reflecting mirrors sandwiching the coating agent between the coating agents
And one reflector reflects and reflects the illumination light from the illumination unit.
Illuminates the side of the agent, and the other reflecting mirror is not blocked by the coating agent in the illumination light.
Obtained by reflecting the transmitted light to the imaging unit
Coating apparatus of the coating agent for imaging and a side of the image showing the silhouette of the coating agent to a field of view of the imaging unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15825793A JP3379995B2 (en) | 1993-06-29 | 1993-06-29 | Coating agent coating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15825793A JP3379995B2 (en) | 1993-06-29 | 1993-06-29 | Coating agent coating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH078872A JPH078872A (en) | 1995-01-13 |
| JP3379995B2 true JP3379995B2 (en) | 2003-02-24 |
Family
ID=15667676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15825793A Expired - Fee Related JP3379995B2 (en) | 1993-06-29 | 1993-06-29 | Coating agent coating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3379995B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101523294B1 (en) * | 2007-10-01 | 2015-05-27 | 무사시 엔지니어링 가부시키가이샤 | Liquid material applicator, application method, and storge medium recording program |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010256025A (en) * | 2009-04-21 | 2010-11-11 | Sanyu Kogyo Kk | Adhesive inspecting apparatus |
-
1993
- 1993-06-29 JP JP15825793A patent/JP3379995B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101523294B1 (en) * | 2007-10-01 | 2015-05-27 | 무사시 엔지니어링 가부시키가이샤 | Liquid material applicator, application method, and storge medium recording program |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH078872A (en) | 1995-01-13 |
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