JPH0455745B2 - - Google Patents
Info
- Publication number
- JPH0455745B2 JPH0455745B2 JP10972087A JP10972087A JPH0455745B2 JP H0455745 B2 JPH0455745 B2 JP H0455745B2 JP 10972087 A JP10972087 A JP 10972087A JP 10972087 A JP10972087 A JP 10972087A JP H0455745 B2 JPH0455745 B2 JP H0455745B2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- fluidized
- coated
- tank
- fluidized tank
- 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
- 239000000843 powder Substances 0.000 claims description 48
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 description 8
- 238000005243 fluidization Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000009503 electrostatic coating Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Coating Apparatus (AREA)
- Electrostatic Spraying Apparatus (AREA)
Description
【発明の詳細な説明】
〔発明の目的〕
本発明は、静電塗装技術に係る静電粉体塗装装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] The present invention relates to an electrostatic powder coating device related to electrostatic coating technology.
従来から粉体塗料（細粒またはパウダーとも称
する）に電荷を与え、該粉体を被塗装物に対して
静電的に付着させる静電塗装技術が知られてお
り、塗料の無駄を省き、均一な塗装面が得られ、
かつ大量生産に向くといつた利点を備えて重宝さ
れているが、本発明はこの種装置においてさらに
塗装効率を向上させることをねらいとするもので
ある。 Electrostatic coating technology has been known for a long time, in which powder paint (also called fine particles or powder) is charged and the powder is electrostatically attached to the object to be coated. A uniform painted surface is obtained,
This method is highly valued as it has the advantage of being suitable for mass production, and the present invention aims to further improve the coating efficiency in this type of device.
すなわち本発明の静電粉体塗装装置は、上方か
ら電荷をもつた粉体を吹き付けまたは降下させる
ケースの下部に多孔板と側壁を備えた流動槽を設
け、前記側壁の外側に余剰粉体を回収する回収部
を設け、前記粉体を前記流動槽で受けてこれを流
動させ、前記流動槽の上方に位置させた被塗装物
に対し吹き付けまたは降下させる粉体と前記流動
槽から流動浮遊させる粉体の双方を付着させるよ
うに構成したもので、電荷をもつた粉体を被塗装
物に吹き付けまたは降下させて付着させるととも
に、被塗装物に付着されずに流動槽に堆積した粉
体を被塗装物の周辺に流動浮遊させ、被塗装物に
付着させる機会を複数回にわたつて設定し、素早
く均一的な塗装ができるように工夫したものであ
る。
In other words, the electrostatic powder coating apparatus of the present invention includes a fluidized tank equipped with a perforated plate and a side wall at the bottom of a case in which charged powder is sprayed or descended from above, and excess powder is disposed of on the outside of the side wall. A collecting section is provided to collect the powder, the powder is received in the fluidized tank, is fluidized, and the powder is sprayed or lowered onto the object to be coated located above the fluidized tank, and the powder is fluidized and suspended from the fluidized tank. This system is designed to attach both powders by spraying or dropping the charged powder onto the object to be coated, and also removes the powder that has accumulated in the fluidized tank without being attached to the object to be coated. It is devised to allow the paint to flow and float around the object to be coated, and to have multiple opportunities for it to adhere to the object, allowing quick and uniform coating.
つぎに本発明の実施例を図面にしたがつて説明
する。
Next, embodiments of the present invention will be described with reference to the drawings.
上部ケース１ａと下部ケース１ｂのそれぞれの
フランジを着脱自在に接合したケース１の内部に
塗料粉体P1，P2が外部へ漏れ出ることがないよ
うに仕切られたチヤンバ２が設定される。上部ケ
ース１ａの天板の幅方向中央に下方に向けて粉体
P1を吹きつける静電スプレーガン３が取り付け
られており、この静電スプレーガン３には吹き出
す粉体P1にあらかじめ電荷を与える機能が備え
られている。下部ケース１ｂに底壁と側壁５，５
を備える流動槽４が設けられ、底壁は多孔板６に
よつて構成されており、側壁５，５の外側に余剰
粉体を回収する側溝状の回収槽７，７が設けられ
ている。前記流動槽４内には側壁５，５と同じ高
さレベルまで電荷をもたない粉体P2が堆積収容
されている。被塗装物Ｗは静電スプレーガン３と
流動槽４の間に配置され、たとえばこれを長尺な
鋼管材とする場合、両端を図示しない支持装置で
支持した状態で長手方向に移動させる。 A chamber 2 is set inside a case 1 in which flanges of an upper case 1a and a lower case 1b are removably joined, and is partitioned to prevent paint powders P 1 and P 2 from leaking outside. Powder is applied downward to the center of the top plate of the upper case 1a in the width direction.
An electrostatic spray gun 3 for spraying P 1 is attached, and this electrostatic spray gun 3 is equipped with a function of pre-charging the powder P 1 to be blown out. A bottom wall and side walls 5, 5 are attached to the lower case 1b.
A fluidization tank 4 is provided, the bottom wall of which is constituted by a perforated plate 6, and gutter-shaped collection tanks 7, 7 for collecting excess powder are provided on the outside of the side walls 5, 5. In the fluidized tank 4, uncharged powder P2 is deposited and accommodated up to the same height as the side walls 5, 5. The object W to be coated is placed between the electrostatic spray gun 3 and the fluidized tank 4, and if it is a long steel pipe, for example, it is moved in the longitudinal direction with both ends supported by support devices (not shown).
静電スプレーガン３から荷電た粉体P1を吹き
付けるとその一部はそのまま被塗装物Ｗに付着す
るが残りの粉体P1は被塗装物Ｗの両脇を通過し
て流動槽４に堆積した粉体P2の上に積もる。流
動槽４には下方から常にドライエアが吹き付けら
れており、この吹き付けの強さは流動槽４に堆積
する全粉体を常に側壁５，５と同じ高さレベルに
維持する程度に設定され、この吹き付けによつて
流動槽４に積もつた粉体P1と流動槽４に初めか
ら堆積していた粉体P2の双方がある程度混在し
た状態で被塗装物Ｗの周囲に舞い上がり、前者粉
体P1の一部が被塗装物Ｗへ付着する。被塗装物
Ｗの周囲に形成されるこの乱流浮動域からはみ出
した粉体P1，P2は重力に則つて回収槽７，７へ
集められ、さらに図示しない循環系により静電ス
プレーガン３に戻される。当該塗装装置はこのよ
うに固定式の静電スプレーガン３を用いる場合に
おいても粉体P1を一方的に吹き付けるだけでな
く被塗装物Ｗの周囲に粉体P1，P2を漂わせるる
ように構成したもので、被塗装物Ｗの全表面に対
して均一な塗装を素早く行なうことができる。ま
た流動槽４に常に一定量の粉体を堆積させること
から被塗装物Ｗの周囲に漂う粉体P1，P2を定量
化し、これに伴なつて常に同じ厚さの塗装膜を形
成することができる。 When charged powder P1 is sprayed from the electrostatic spray gun 3, a part of it sticks to the object W to be coated, but the remaining powder P1 passes through both sides of the object W to be coated and enters the fluidization tank 4. It accumulates on top of the deposited powder P2 . Dry air is constantly blown into the fluidized tank 4 from below, and the strength of this blowing is set to such an extent that all the powder deposited in the fluidized tank 4 is always maintained at the same height level as the side walls 5. Powder P 1 accumulated in the fluidized tank 4 due to spraying and powder P 2 that had been accumulated in the fluidized tank 4 from the beginning fly up around the object W to be coated in a mixed state, and the former powder A part of P 1 adheres to the object W to be painted. Powder particles P 1 and P 2 protruding from this turbulent floating area formed around the object W to be coated are collected in collection tanks 7 and 7 according to gravity, and are further transferred to an electrostatic spray gun 3 by a circulation system (not shown). will be returned to. Even when the fixed electrostatic spray gun 3 is used in this way, the coating device not only sprays the powder P 1 unilaterally but also floats the powders P 1 and P 2 around the object W to be coated. With this configuration, uniform coating can be quickly applied to the entire surface of the object W to be coated. In addition, since a fixed amount of powder is always deposited in the fluidization tank 4, the powder P 1 and P 2 floating around the object W to be coated can be quantified, and a coating film with the same thickness is always formed. be able to.
流動槽４に堆積収容した粉体P2については、
多孔板６に電極を設置し、該電極と高圧発生装置
（ともに図示せず）を接続する等して、該粉体P2
に独自に電荷を与えることが考えられる。 Regarding the powder P 2 deposited and stored in the fluidized tank 4,
By installing an electrode on the porous plate 6 and connecting the electrode to a high pressure generator (both not shown), the powder P 2
It is conceivable to give a unique charge to
本発明の静電粉体塗装装置は以上説明したよう
に上方から電荷をもつた粉体を吹き付けまたは降
下させるケースの下部に多孔板と側壁を備えた流
動槽を設け、前記側壁の外側に余剰粉体を回収す
る回収部を設け、前記流動槽内に前記側壁と同じ
高さレベルまで粉体を堆積収容し、前記粉体を流
動槽で受けてこれを流動させ、前記流動槽の上方
に位置させた被塗装物に対し吹き付けまたは降下
させる粉体と流動槽から流動する粉体の双方を付
着させるように構成して被塗装物を効率的に塗装
することができ、とくに被塗装物が長尺なもので
あつたり複雑な形状である場合に優れたメリツト
を発揮し得るものである。
As explained above, the electrostatic powder coating device of the present invention is provided with a fluidized tank equipped with a perforated plate and a side wall at the bottom of the case in which charged powder is sprayed or descended from above, and an excess is provided on the outside of the side wall. A recovery section for collecting powder is provided, the powder is accumulated and accommodated in the fluidized tank up to the same height as the side wall, the powder is received in the fluidized tank and is made to flow, and the powder is flowed above the fluidized tank. The object to be coated can be coated efficiently by configuring the structure so that both the powder sprayed or dropped and the powder flowing from the fluidization tank adhere to the object to be coated. This can provide excellent advantages when the material is long or has a complicated shape.
図面は本発明の実施例に係る静電粉体塗装装置
の断面図である。
１…ケース、１ａ…上部ケース１ｂ下部ケー
ス、２…チヤンバ、３…静電スプレーガン、４…
流動槽、５…側壁、６…多孔板、７…回転槽、
P1，P2…粉体、Ｗ…被塗装物。
The drawing is a sectional view of an electrostatic powder coating apparatus according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Case, 1a... Upper case 1b Lower case, 2... Chamber, 3... Electrostatic spray gun, 4...
Fluidized tank, 5... Side wall, 6... Perforated plate, 7... Rotating tank,
P1 , P2 ...Powder, W...Object to be coated.
Claims (1)
降下させるケースの下部に多孔板と側壁を備えた
流動槽を設け、前記側壁の外側に余剰粉体を回収
する回収部を設け、前記粉体を前記流動槽で受け
てこれを流動させ、前記流動槽の上方に位置させ
た被塗装物に対し吹き付けまたは降下させる粉体
と前記流動槽から流動浮遊させる粉体の双方を付
着させることを特徴とする静電粉体塗装装置。1. A fluidized tank equipped with a perforated plate and a side wall is provided at the bottom of a case in which charged powder is sprayed or dropped from above, and a collection section for collecting excess powder is provided outside the side wall, and the powder is collected. The powder is received and fluidized in the fluidized tank, and both the powder to be sprayed or dropped and the powder fluidized and suspended from the fluidized tank are attached to the object to be coated located above the fluidized tank. Electrostatic powder coating equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10972087A JPS63274465A (en) | 1987-05-07 | 1987-05-07 | Equipment for coating electrostatic fine particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10972087A JPS63274465A (en) | 1987-05-07 | 1987-05-07 | Equipment for coating electrostatic fine particle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63274465A JPS63274465A (en) | 1988-11-11 |
| JPH0455745B2 true JPH0455745B2 (en) | 1992-09-04 |
Family
ID=14517513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10972087A Granted JPS63274465A (en) | 1987-05-07 | 1987-05-07 | Equipment for coating electrostatic fine particle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63274465A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11179248A (en) * | 1997-12-25 | 1999-07-06 | Nippon Parkerizing Co Ltd | Powder coating apparatus and method |
| JP6075981B2 (en) * | 2012-07-02 | 2017-02-08 | 株式会社川熱 | Method for producing polyethylene terephthalate resin-coated metal wire |
| DE102017130289A1 (en) | 2017-12-18 | 2019-06-19 | quickcoating GmbH | Device for powder coating of objects |
-
1987
- 1987-05-07 JP JP10972087A patent/JPS63274465A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63274465A (en) | 1988-11-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070904 Year of fee payment: 15 |