JPS6246234B2 - - Google Patents
Info
- Publication number
- JPS6246234B2 JPS6246234B2 JP56137578A JP13757881A JPS6246234B2 JP S6246234 B2 JPS6246234 B2 JP S6246234B2 JP 56137578 A JP56137578 A JP 56137578A JP 13757881 A JP13757881 A JP 13757881A JP S6246234 B2 JPS6246234 B2 JP S6246234B2
- Authority
- JP
- Japan
- Prior art keywords
- flow
- paint
- motor
- flow rate
- rotation speed
- 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
Links
- 239000003973 paint Substances 0.000 claims description 33
- 238000010422 painting Methods 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Coating Apparatus (AREA)
Description
【発明の詳細な説明】
本発明は流量自動制御装置を有するカーテン式
フローコーター塗装機に関するものである。従来
例を第１図に示す。すなわち、モータ１により駆
動される循環ポンプ２にてフローコーターヘツド
３に塗料を送出し、フローコーターヘツド３より
塗料を所謂カーテン式に流下してフローコーター
ヘツド３の下方にて移送される被塗物４に塗料を
塗布するものである。この従来例にあつて被塗物
４への塗布量をコントロールするためには、たと
えばストツプウオツチ９で計量時間を測定しなが
ら計量カツプ８に溜る塗料の量を測定する。いわ
ゆる容量法と、疑似被塗物である鉄板１０に塗料
を塗布し塗布前後の重量を秤りで測定する、いわ
ゆる重量法とがあり、いずれの場合も計測を人手
で行ない循環ポンプ２から送出される塗料の流量
調整を流量調整弁１１を調整することにより行な
つていた。しかし乍ら、この従来例にあつては流
量計測に人手を要する上に流量調整精度が悪く、
常に安定した塗布流量が得られないという欠点が
あつた。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a curtain type flow coater coating machine having an automatic flow rate control device. A conventional example is shown in FIG. That is, a circulation pump 2 driven by a motor 1 sends paint to a flow coater head 3, and the paint flows down from the flow coater head 3 in a so-called curtain style to the coated material that is transferred below the flow coater head 3. This is to apply paint to object 4. In this conventional example, in order to control the amount of paint applied to the object 4, the amount of paint accumulated in the measuring cup 8 is measured while measuring the measuring time with a stopwatch 9, for example. There are the so-called volumetric method and the so-called gravimetric method, in which paint is applied to the iron plate 10, which is a pseudo-coated object, and the weight before and after application is measured using a scale.In both cases, the measurement is performed manually and the paint is sent out from the circulation pump 2. The flow rate of the paint is adjusted by adjusting the flow rate regulating valve 11. However, this conventional example requires human labor to measure the flow rate and has poor flow rate adjustment accuracy.
The drawback was that a stable coating flow rate could not always be obtained.
本発明は上述の点に鑑み、塗布流量を自由調整
することにより人手を要することなく流量調整精
度が向上し、常に安定した塗布流量が得られるフ
ローコーター塗装機を提供することを目的とす
る。 In view of the above-mentioned points, an object of the present invention is to provide a flow coater atomizer that can freely adjust the coating flow rate to improve the accuracy of flow rate adjustment without requiring manual labor, and can always provide a stable coating flow rate.
本発明を図示実施例に基づき詳述する。本発明
のフローコーター塗装機は、モータ１により駆動
される循環ポンプ２にてフローコーターヘツド３
に塗料を送出し、フローコーターヘツド３の下方
にて移送される被塗物４に塗料を塗布するように
したフローコーター塗装機において、循環ポンプ
２からフローコーターヘツド３に送出される塗料
の流量を測定する流量計５を設け、上記流量計５
の測定値と予め設定された流量の設定値を比較し
た比較信号Ｐを出力する比較部６を設けて、この
比較信号Ｐを検出して測定値が設定値より大きい
とき循環ポンプ２のモータ１の回転数を減少せし
めかつ測定値が設定値より小さいときモータ１の
回転数を増大せしめてフローコーターヘツド３に
送出される塗料の流量を略一定量とする制御部７
を設けたことを特徴とするものであつて、以下各
部を更に詳しく説明する。１２は塗料タンクであ
り、塗料補給ポンプ１３により自動的に塗料槽１
４から塗料が補給され、レベルが一定にコントロ
ールされている。循環ポンプ２は塗料タンク１２
からフローコーターヘツド３に塗料を送出してお
り、内蔵する誘導モータ１の回転数を増減するこ
とによりフローコーターヘツド３に送出される塗
料の流量を調整することができる。循環ポンプ２
とフローコーターヘツド３とを接続する連結パイ
プ１５にはフイルタ１６と流量計５が設けられて
いる。電磁流量計よりなる上記流量計５は、塗料
の流量の測定値をアナログ電圧値に変換するもの
で、このアナログ電圧値が記録計１７に記録され
ている。またこのアナログ電圧値が比較部６を構
成するＡ−Ｄ変換器１８に送出され、デジタル値
に変換されて流量表示器１９にて表示される。一
方、比較部６は外部より予め流量が設定自在な流
量設定器２０を具備し、この流量設定器２０に設
定値がデジタル表示される。そして、上記測定値
と設定値とを比較器２１にて比較し、比較信号Ｐ
を出力する。２２は流量が異常に大きくまたは小
さくなつたとき警報を発生する流量異常警報器で
ある。上記比較信号Ｐが入力される制御部７は、
モータ回転数設定器２３とＶ−Ｆ変換器２４より
なり、モータ回転数設定器２３は上記比較信号Ｐ
を検出して流量の測定値が設定値よりも大きなと
き、その差に応じた回転数制御信号ＱをＶ−Ｆ変
換器２４に送出し、Ｖ−Ｆ変換器２４にて誘導モ
ータ１の回転数を決定する３φ交流電圧の周波数
を変更する。たとえば、今誘導モータ１が
AC200V、50Hzの３φ交流電圧にて駆動されてお
り、測定値と設定値との差に応じて45Hz、40Hz…
…と連続的に周波数を変換してモータ１の回転数
を減少せしめる。逆に流量の測定値が設定値より
も小さいとき、その差に応じて55Hz、60Hzと周波
数を増加してやればモータ１の回転数を増大する
ことができるのである。従つて、循環ポンプ２に
よりフローコーターヘツド３に送出される塗料の
流量は略一定となるのである。２５はモータ１の
回転数検出器であつて、この回転数検出器２５の
検出したモータ１の回転数と予め回転数下限設定
器２６および上限設定器２７により設定されたモ
ータ回転数の下限値および上限値とを比較器２８
にて比較し、モータ１の回転数が下限値および上
限値を超えたとき警報器２９を駆動してモータ１
の異常を知らせるのである。３０はフローコータ
ーヘツド３より流出する余剰の塗料を塗料タンク
１２に返送する返送樋である。 The present invention will be explained in detail based on illustrated embodiments. The flow coater painting machine of the present invention has a circulation pump 2 driven by a motor 1, and a flow coater head 3.
In a flow coater painting machine that sends paint to the flow coater head 3 and applies the paint to a workpiece 4 transferred below the flow coater head 3, the flow rate of the paint sent from the circulation pump 2 to the flow coater head 3. A flowmeter 5 is provided to measure the flowmeter 5.
A comparison section 6 is provided which outputs a comparison signal P that compares the measured value with a preset flow rate set value, and detects this comparison signal P, and when the measured value is larger than the set value, the motor 1 of the circulation pump 2 is a control unit 7 which decreases the rotational speed of the motor 1 and increases the rotational speed of the motor 1 when the measured value is smaller than a set value to maintain a substantially constant flow rate of paint sent to the flow coater head 3;
Each part will be explained in more detail below. 12 is a paint tank, which is automatically filled with paint tank 1 by a paint replenishment pump 13.
Paint is replenished starting from 4 and the level is controlled at a constant level. Circulation pump 2 is paint tank 12
The paint is sent to the flow coater head 3, and the flow rate of the paint sent to the flow coater head 3 can be adjusted by increasing or decreasing the rotation speed of the built-in induction motor 1. Circulation pump 2
A filter 16 and a flow meter 5 are provided in a connecting pipe 15 that connects the flow coater head 3 and the flow coater head 3. The flowmeter 5, which is an electromagnetic flowmeter, converts the measured value of the flow rate of paint into an analog voltage value, and this analog voltage value is recorded on the recorder 17. Further, this analog voltage value is sent to the A-D converter 18 constituting the comparator 6, converted into a digital value, and displayed on the flow rate display 19. On the other hand, the comparator 6 is equipped with a flow rate setting device 20 that allows the flow rate to be set in advance from the outside, and the set value is digitally displayed on the flow rate setting device 20. Then, the measured value and the set value are compared by the comparator 21, and a comparison signal P
Output. 22 is a flow rate abnormality alarm that issues an alarm when the flow rate becomes abnormally large or small. The control unit 7 to which the comparison signal P is input is
It consists of a motor rotation speed setting device 23 and a V-F converter 24, and the motor rotation speed setting device 23 receives the above comparison signal P.
When the measured value of the flow rate is larger than the set value, a rotation speed control signal Q corresponding to the difference is sent to the V-F converter 24, and the V-F converter 24 controls the rotation of the induction motor 1. Change the frequency of the 3φ AC voltage to determine the number. For example, now induction motor 1 is
It is driven by AC200V, 50Hz 3φ AC voltage, and depending on the difference between the measured value and the set value, 45Hz, 40Hz...
. . . The frequency is continuously changed to reduce the number of revolutions of the motor 1. Conversely, when the measured value of the flow rate is smaller than the set value, the number of revolutions of the motor 1 can be increased by increasing the frequency to 55 Hz and 60 Hz according to the difference. Therefore, the flow rate of paint delivered to the flow coater head 3 by the circulation pump 2 is approximately constant. Reference numeral 25 denotes a rotation speed detector of the motor 1, which is a combination of the rotation speed of the motor 1 detected by the rotation speed detector 25 and the lower limit value of the motor rotation speed preset by the rotation speed lower limit setting device 26 and the upper limit setting device 27. and the upper limit value in the comparator 28
When the rotation speed of the motor 1 exceeds the lower limit value and the upper limit value, the alarm 29 is activated and the motor 1 is
This is to notify you of an abnormality. 30 is a return gutter for returning excess paint flowing out from the flow coater head 3 to the paint tank 12.
第３図は、連結パイプ１５の流量Ｈと現実の被
塗物４への塗布量Ｋとの関係を示す概略構成図で
あつて、ｌを被塗物４の長さ、σを塗料比重、Ｍ
を塗布面積、ｖをコンベア速度（一定）、αをフ
ローコーターヘツド３の塗料流出長とすると、
Ｋ＝ｌσα／Ｍｖ Ｈ
＝βＨ（β＝一定）
が成立し、塗布量Ｋは流量Ｈに比例する。従つて
流量Ｈすなわち、モータ１の回転数をコントロー
ルすれば現実の被塗物４への塗布量Ｋをコントロ
ールすることになるのである。 FIG. 3 is a schematic configuration diagram showing the relationship between the flow rate H of the connecting pipe 15 and the actual coating amount K on the object 4 to be coated, where l is the length of the object 4 to be coated, σ is the specific gravity of the paint, M
When is the coating area, v is the conveyor speed (constant), and α is the paint flow length of the flow coater head 3, then K = lσα/Mv H = βH (β = constant), and the coating amount K is proportional to the flow rate H. do. Therefore, by controlling the flow rate H, that is, the rotational speed of the motor 1, the actual coating amount K on the object 4 to be coated can be controlled.
かくて本発明にあつては、塗料をフローコータ
ーヘツドに送出する循環ポンプと、塗料の流量を
測定する流量計と、流量計の測定値と予め設定さ
れた流量の設定値とを比較する比較器と、比較器
の比較信号に基づき測定値が設定値より大きなと
き循環ポンプのモータの回転数を減少せしめかつ
測定値が設定値より小さいとモータの回転数を増
大せしめる制御部とを具備しているから、たとえ
ば連結パイプの抵抗やフイルタの詰まり等で流量
が予め設定された流量より減少したとしても、流
量の減少を流量計が検出して比較部が比較信号を
送出し、制御部がモータの回転数を増大するので
流量が増加し、フローコーターヘツドに送出され
る塗料の流量は略一定となるので、従来のように
人手を要することなく流量調整をすることができ
るばかりでなく、流量調整精度も良く、常に安定
した塗布流量が得られ、流量計や制御部の精度を
高めることにより微妙な塗布流量コントロールが
可能であつて、循環ポンプの仕事効率が向上する
という効果があり、更に循環ポンプのモータの回
転数を検出する回転数検出器と、上記モータの回
転数が予め定めた上限値と下限値との間を外れる
と警報器を駆動する出力を発生させる比較器とを
備えているから、制御系のトラブルで循環ポンプ
のモータの回転数が異常となつて、塗料供給が過
少又は過多となる恐れがでた場合、警報器により
異常警報を発することができ、結果被塗物に不良
品が発生するのを最少で抑えることができるとい
う効果もある。 Thus, in the present invention, a circulation pump that delivers paint to the flow coater head, a flow meter that measures the flow rate of the paint, and a comparison that compares the measured value of the flow meter with a preset flow rate setting value. and a control unit that reduces the rotation speed of the motor of the circulation pump when the measured value is larger than the set value based on the comparison signal of the comparator, and increases the rotation speed of the motor when the measured value is smaller than the set value. Therefore, even if the flow rate decreases from the preset flow rate due to the resistance of the connecting pipe or a clogged filter, the flow meter detects the decrease in flow rate, the comparison unit sends a comparison signal, and the control unit By increasing the rotational speed of the motor, the flow rate increases, and the flow rate of the paint sent to the flow coater head remains approximately constant, so it is not only possible to adjust the flow rate without requiring manual labor as in the past. The flow rate adjustment accuracy is good, and a stable coating flow rate is always obtained.By increasing the accuracy of the flow meter and control unit, delicate coating flow rate control is possible, and the work efficiency of the circulation pump is improved. Furthermore, a rotation speed detector detects the rotation speed of the motor of the circulation pump, and a comparator that generates an output to drive an alarm when the rotation speed of the motor deviates from a predetermined upper limit value and lower limit value. Because of this, if there is a risk that the rotation speed of the circulation pump motor becomes abnormal due to a problem with the control system, resulting in insufficient or excessive paint supply, the alarm can issue an abnormality alarm and reduce the damage caused by the problem. It also has the effect of minimizing the occurrence of defective coated products.
第１図は従来例の概略構成図、第２図は本発明
一実施例のブロツク図、第３図は同上の概略構成
図であつて、１はモータ、２は循環ポンプ、３は
フローコーターヘツド、４は被塗物、５は流量
計、６は比較部、７は制御部、２５は回転数検出
器、２８は比較器、２９は警報器である。
FIG. 1 is a schematic block diagram of a conventional example, FIG. 2 is a block diagram of an embodiment of the present invention, and FIG. 3 is a schematic block diagram of the same as above, in which 1 is a motor, 2 is a circulation pump, and 3 is a flow coater. 4 is the object to be coated, 5 is a flow meter, 6 is a comparison section, 7 is a control section, 25 is a rotation speed detector, 28 is a comparator, and 29 is an alarm.
Claims (1)
ーコーターヘツドに塗料を送出し、フローコータ
ーヘツドの下方にて移送される被塗物に塗料を塗
布するようにしたフローコーター塗装機におい
て、循環ポンプからフローコーターヘツドに送出
される塗料の流量を測定する流量計と、上記流量
計の測定値と予め設定された流量の設定値を比較
して比較信号を出力する比較部と、この比較部の
比較信号を検出して測定値が設定値より大きいと
き循環ポンプのモータの回転数を減少させ且つ測
定値が設定値より小さいときモータの回転数を増
大させてフローコーターヘツドに送出される塗料
の流量を略一定量とする制御部とを設けたことを
特徴とするフローコーター塗装機において、循環
ポンプのモータの回転数を検出する回転数検出器
と、上記モータの回転数が予め定めた上限値と下
限値との間を外れると警報器を駆動する出力を発
生させる比較器とを備えたことを特徴とするフロ
ーコーター塗装機。1 In a flow coater painting machine, in which paint is sent to a flow coater head by a circulation pump driven by a motor, and the paint is applied to the object being transferred below the flow coater head, the flow from the circulation pump is A flow meter that measures the flow rate of paint sent to the coater head, a comparison section that compares the measured value of the flow meter and a preset flow rate setting value and outputs a comparison signal, and a comparison signal of this comparison section. When the measured value is larger than the set value, the rotation speed of the circulation pump motor is decreased, and when the measured value is smaller than the set value, the motor rotation speed is increased to reduce the flow rate of the paint delivered to the flow coater head. A flow coater painting machine characterized by being provided with a control unit that maintains a substantially constant amount of rotation, a rotation speed detector that detects the rotation speed of a motor of a circulation pump, and a predetermined upper limit value for the rotation speed of the motor. A flow coater painting machine characterized by comprising a comparator that generates an output that drives an alarm when the value falls outside the lower limit value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13757881A JPS5840170A (en) | 1981-08-31 | 1981-08-31 | Flow coater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13757881A JPS5840170A (en) | 1981-08-31 | 1981-08-31 | Flow coater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5840170A JPS5840170A (en) | 1983-03-09 |
| JPS6246234B2 true JPS6246234B2 (en) | 1987-10-01 |
Family
ID=15201991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13757881A Granted JPS5840170A (en) | 1981-08-31 | 1981-08-31 | Flow coater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5840170A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2580408B2 (en) * | 1991-05-28 | 1997-02-12 | 橋本電機工業株式会社 | Adhesive mixture automatic application device |
| JP4863782B2 (en) * | 2006-06-19 | 2012-01-25 | 東京応化工業株式会社 | Treatment liquid supply device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50105733A (en) * | 1972-09-25 | 1975-08-20 | ||
| JPS5485811A (en) * | 1977-12-16 | 1979-07-07 | Fuji Photo Film Co Ltd | Preparation of pressure sensing recording sheet |
-
1981
- 1981-08-31 JP JP13757881A patent/JPS5840170A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50105733A (en) * | 1972-09-25 | 1975-08-20 | ||
| JPS5485811A (en) * | 1977-12-16 | 1979-07-07 | Fuji Photo Film Co Ltd | Preparation of pressure sensing recording sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5840170A (en) | 1983-03-09 |
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