JPS6246233B2 - - Google Patents
Info
- Publication number
- JPS6246233B2 JPS6246233B2 JP12757985A JP12757985A JPS6246233B2 JP S6246233 B2 JPS6246233 B2 JP S6246233B2 JP 12757985 A JP12757985 A JP 12757985A JP 12757985 A JP12757985 A JP 12757985A JP S6246233 B2 JPS6246233 B2 JP S6246233B2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- resin
- perforated plate
- air chamber
- plate
- 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 23
- 239000011347 resin Substances 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 19
- 238000005243 fluidization Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Landscapes
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
〔産業上の利用分野〕
本発明は振動トラフ内を、樹脂焼結等の流動用
樹脂多孔板により樹脂粉末流動槽と、給気口を有
する空気室に仕切り、且つ、この空気室を更にキ
ヤンバスや、打抜金網、或は金属焼結板等により
成形した補助多孔板で分割して成る樹脂コーテイ
ングに用いる振動流動槽に関する。
〔従来の技術とその問題点〕
従来、この種装置では第４図で示すように、架
台に固定したアングルフレーム６に吊り下げて固
定した加熱用誘導コイル８間に、被コーテイング
物体９を吊り下げ、これを樹脂の融点以上に加熱
してその表面に、樹脂粉末７を溶融し、コーテイ
ングする装置１において、フイルタ５から入つた
空気を送風機４により矢印Ｆ方向の給気口３に送
り込み、打抜金網等で成形した流動用多孔板２の
孔から通気し、粉末７を流動化して物体９を粉末
７中に挿入時、或は取出し時に生ずる粉末７の抵
抗を減少させているのが実情であるが、このよう
な従来型では、次に示す２つの欠点があつた。即
ち、その１番目は、樹脂粉末層７を通過する間
に、粉末層７内では気泡となつており、この気泡
が粉末７中を上昇して層の表面で破裂するため、
粉末７に激しく、しかも局部的な流動化が生じ、
製品のコーテイングを破壊する。その２番目は、
流動開始時間が長く生産性を阻害する要因となつ
ていた等の欠点があつた。
〔問題点を確決するための手段〕
本発明は上記に鑑み、トラフ内を樹脂多孔板
と、補助多孔板で仕切り、更に振動を加えること
によつて流動開始時間を早めると同時に、気泡の
発生を抑制防止して粉末流動時の密度が層内にお
いて均一となるよう流動状態を生じさせる流動槽
を提供することが目的であり、本発明はこの目的
を有効に達成させるためになされたもので、以
下、第１〜３図について本発明を具体的に説明す
る。１１は振動トラフ、１２は給気口で、第４図
で示すフイルタ５から矢印Ｆ方向に入つた空気を
送風機４の駆動で空気室１０、即ち第１図示の空
気室１３に送り込む。１４は樹脂粉末７の流動層
で、排気はアングルフレーム２０上に設けるフー
ド２４等で行なわれる。１５は例えば樹脂焼結等
による流動用の多孔板である。１６はキヤンバス
や打抜金網、或は金属焼結板等により成形した補
助多孔板で、これにより流動用空気を均一に分散
させるためには第１図で示すように、振動トラフ
１１の空気室１３内を上記補助多孔板１６で仕切
り、例えばその孔イ，ロ，ハ、（実際にはもつと
多いが）の各部において、粉体層厚による圧力損
失と、多孔板による圧力損失の合計が等しくなけ
ればならない。これを今、補助多孔板の圧力損失
を△P1、樹脂多孔板の圧力損失を△P2とし、粉体
層の密度の濃い部分の圧力損失を△P3、密度の薄
い部分の圧力損失を△P′3とすれば、各部におけ
る圧損と密度との関係は下表の通りとなる。
[Industrial Application Field] The present invention partitions the inside of a vibrating trough into a resin powder fluidization tank and an air chamber having an air supply port by using a perforated resin plate for fluidization such as sintered resin, and further divides this air chamber into a canvas. The present invention also relates to a vibratory flow tank used for resin coating, which is divided by auxiliary perforated plates formed from punched wire mesh, sintered metal plates, or the like. [Prior art and its problems] Conventionally, in this type of apparatus, as shown in FIG. In the apparatus 1, which heats the resin powder above the melting point of the resin to melt and coat the surface with resin powder 7, air entering from the filter 5 is sent to the air supply port 3 in the direction of arrow F by the blower 4, The powder 7 is fluidized through the holes in the perforated fluidizing plate 2 made of a punched wire mesh or the like, thereby reducing the resistance of the powder 7 that occurs when inserting the object 9 into the powder 7 or taking it out. As a matter of fact, this conventional type has the following two drawbacks. That is, the first is that while passing through the resin powder layer 7, bubbles form within the powder layer 7, and these bubbles rise through the powder 7 and burst on the surface of the layer.
Vigorous and localized fluidization occurs in the powder 7,
Destroys the coating of the product. The second one is
There were drawbacks such as the long flow start time, which was a factor that inhibited productivity. [Means for determining the problem] In view of the above, the present invention has been developed by partitioning the inside of the trough with a resin perforated plate and an auxiliary perforated plate, and further applying vibration to accelerate the flow start time and at the same time to prevent the generation of air bubbles. It is an object of the present invention to provide a fluidized tank that generates a fluidized state such that the density of the powder is uniform within the bed by suppressing and preventing the powder from flowing, and the present invention has been made to effectively achieve this object. Hereinafter, the present invention will be specifically explained with reference to FIGS. 1 to 3. 11 is a vibrating trough, and 12 is an air supply port, through which the air entering from the filter 5 shown in FIG. 14 is a fluidized bed of resin powder 7, and exhaust is performed by a hood 24 provided on the angle frame 20 or the like. Reference numeral 15 is a perforated plate for flow by, for example, resin sintering. Reference numeral 16 denotes an auxiliary perforated plate made of canvas, punched wire mesh, or sintered metal plate.
The inside of the air chamber 13 of 11 is partitioned by the auxiliary perforated plate 16, and in each part of the hole A, B, C (actually, there are many), the pressure loss due to the thickness of the powder layer and the pressure due to the perforated plate are reduced. The total losses must be equal. Now, the pressure loss of the auxiliary perforated plate is △P 1 , the pressure loss of the resin perforated plate is △P 2 , the pressure loss of the dense part of the powder layer is △P 3 , and the pressure loss of the low density part If △P′ 3 , then the relationship between pressure loss and density at each part is as shown in the table below.
以上のような本発明のポリエチレン等の焼結材
で成形した流動用多孔板１５は、下方の補助多孔
板１６と同様、個々の孔の大きさが平均10μｍと
小さく、且つ、均一に分布されているため気泡が
発生しにくい。また、材料が樹脂であるから誘導
加熱を受けないという特長があり、更にトラフ１
１に振動を加えることにより多孔板直上に粉体が
上方に投射され、該多孔板を通過する気流の圧力
抵抗を減少させ、気泡の発生と、この気泡の連続
発生にもとずく吹き抜けを有効に防止することが
できる。即ち、上記「投射」現象については、樹
脂多孔板が振動により上方へ変位するとき、直上
部にある粉体は、重力に抗して加速されることを
言うが、この動作の結果、多孔板直上部の粉体の
自重が減少したようになり、孔から吹出す気流は
粉体の抵抗を受けない（減少する）ことになり、
全面的に均一となる。
〔発明の効果〕
以上のような本発明によれば、物体表面に溶融
コーテイングされた軟い樹脂層が、該物体の取出
し時に、周囲の粉末から摩擦抵抗を受けることが
なく、コーテイング層の脱落による破壊が生じな
い等の著しい効果がある。
The perforated flow plate 15 molded from the sintered material such as polyethylene of the present invention as described above has individual pores as small as an average size of 10 μm and is uniformly distributed, similar to the auxiliary perforated plate 16 below. Because of this, bubbles are less likely to form. In addition, since the material is resin, it does not undergo induction heating, and the trough 1
By applying vibration to 1, powder is projected upwards directly above the perforated plate, reducing the pressure resistance of the airflow passing through the perforated plate, and effective in generating air bubbles and blowing through based on the continuous generation of these air bubbles. can be prevented. In other words, regarding the above-mentioned "projection" phenomenon, when the perforated resin plate is displaced upward due to vibration, the powder directly above it is accelerated against gravity, and as a result of this movement, the perforated plate The weight of the powder directly above it appears to have decreased, and the airflow blown out from the hole is not subject to (reduced) resistance from the powder.
It becomes uniform all over. [Effects of the Invention] According to the present invention as described above, the soft resin layer melt-coated on the surface of an object is not subjected to frictional resistance from the surrounding powder when the object is taken out, and the coating layer does not fall off. This has significant effects such as preventing damage due to
第１図は本発明の縦断面図、第２図は第１図の
Ａ−A′矢視平面図、第３図は本発明の補助多孔
板の利点を説明するための図、第４図は従来型の
構成略図である。
１１……振動トラフ、１２……給気口、１３…
…空気室、１４……樹脂粉末流動層、１５……流
動用多孔板、１６……補助多孔板、１８……振動
源、２０……アングルフレーム、２１……誘導コ
イル（加熱用）。
Fig. 1 is a longitudinal sectional view of the present invention, Fig. 2 is a plan view taken along the line A-A' in Fig. 1, Fig. 3 is a diagram for explaining the advantages of the auxiliary perforated plate of the present invention, Fig. 4 is a schematic diagram of a conventional configuration. 11 ... Vibration trough, 12... Air supply port, 13...
... Air chamber, 14 ... Resin powder fluidized bed, 15 ... Perforated plate for flow, 16 ... Auxiliary perforated plate, 18 ... Vibration source, 20 ... Angle frame, 21 ... Induction coil (for heating).
Claims (1)
フレームから垂下し固定した加熱用誘導コイルを
設けて、物品をコーテイングする樹脂粉末流動槽
と、給気口を有する空気室に、流動用樹脂多孔板
で仕切り、且つ、上記空気室をキヤンバスや打抜
金網、或は金属焼結板等により成形した補助多孔
板で仕切るようにしたことを特徴とする樹脂コー
テイング用振動流動槽。1. In the vibrating trough, a heating induction coil suspended and fixed from an angle frame is installed inside the vibrating trough, and a resin powder fluidization tank for coating articles and an air chamber with an air supply port are partitioned by a resin powder porous plate for fluidization. A vibrating fluidized fluidized tank for resin coating, characterized in that the air chamber is partitioned by an auxiliary perforated plate formed from a canvas, a punched wire mesh, a sintered metal plate, or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12757985A JPS61287470A (en) | 1985-06-12 | 1985-06-12 | Vibration fluidization tank for resin coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12757985A JPS61287470A (en) | 1985-06-12 | 1985-06-12 | Vibration fluidization tank for resin coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61287470A JPS61287470A (en) | 1986-12-17 |
| JPS6246233B2 true JPS6246233B2 (en) | 1987-10-01 |
Family
ID=14963548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12757985A Granted JPS61287470A (en) | 1985-06-12 | 1985-06-12 | Vibration fluidization tank for resin coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61287470A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0711610A1 (en) * | 1993-08-06 | 1996-05-15 | Mawa Metallwarenfabrik Wagner Gmbh | Process for coating a metal piece with an anti-sliding wating in a fluidised bed and wated metal piece |
| FR2795004A1 (en) * | 1999-06-15 | 2000-12-22 | Atofina | METHOD FOR COVERING AN OBJECT WITH A FILM AND APPARATUS FOR CARRYING OUT SAID METHOD |
| DE10105504A1 (en) | 2001-02-07 | 2002-08-14 | Eos Electro Optical Syst | Powder treatment device for a device for producing a three-dimensional object, device for producing a three-dimensional object and method for producing a three-dimensional object |
| JP5303990B2 (en) * | 2008-03-28 | 2013-10-02 | 東レ株式会社 | Paint supply roll, roll coating apparatus, and method for producing coated web |
| JP6616382B2 (en) | 2017-11-09 | 2019-12-04 | 本田技研工業株式会社 | Powder surface flattening method and powder resin coating apparatus |
| JP6596477B2 (en) | 2017-11-09 | 2019-10-23 | 本田技研工業株式会社 | Powder resin coating apparatus and powder resin coating method. |
-
1985
- 1985-06-12 JP JP12757985A patent/JPS61287470A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61287470A (en) | 1986-12-17 |
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