JPH0250824B2 - - Google Patents
Info
- Publication number
- JPH0250824B2 JPH0250824B2 JP59165321A JP16532184A JPH0250824B2 JP H0250824 B2 JPH0250824 B2 JP H0250824B2 JP 59165321 A JP59165321 A JP 59165321A JP 16532184 A JP16532184 A JP 16532184A JP H0250824 B2 JPH0250824 B2 JP H0250824B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- release agent
- mold release
- spray gun
- molds
- 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 - Lifetime
Links
- 239000007921 spray Substances 0.000 claims description 48
- 239000006082 mold release agent Substances 0.000 claims description 34
- 238000004512 die casting Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 238000007590 electrostatic spraying Methods 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 description 8
- 238000005507 spraying Methods 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/2007—Methods or apparatus for cleaning or lubricating moulds
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はアルミニウム合金等のダイカスト装置
に使用することのできるダイカスト離型剤の静電
スプレー方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an electrostatic spraying method for a die-casting mold release agent that can be used in die-casting equipment for aluminum alloys, etc.
（従来技術）
ダイカスト装置の固定金型と可動金型が開いた
時、両金型間に先端にスプレーガンを固定したロ
ツドを挿入し、両金型の両面に前記スプレーガン
から離型剤をスプレーする従来の装置において
は、離型剤と空気を圧送して金型内面にスプレー
している。このような従来のスプレー方法の欠点
は、
金型付着量に対し、落下する離型剤の量が非
常に多く、経済的に悪い。例えばスプレー量
100に対し、付着量は20〜30％、落下量は70〜
80％が普通であり、落下量の内訳は、空中飛散
が約40％、直接落下が約60％である。(Prior art) When the fixed mold and movable mold of a die-casting machine are opened, a rod with a spray gun fixed at the tip is inserted between the two molds, and a mold release agent is applied from the spray gun to both surfaces of both molds. In conventional spraying devices, mold release agent and air are pumped and sprayed onto the inner surface of the mold. The disadvantage of such conventional spraying methods is that the amount of mold release agent that falls is very large compared to the amount that is deposited on the mold, which is economically disadvantageous. For example, the amount of spray
Compared to 100, the adhesion amount is 20~30% and the falling amount is 70~
80% is normal, and the breakdown of the fall amount is approximately 40% due to airborne scattering and approximately 60% due to direct fall.
落下した離型剤及び空中に飛び散つた離型剤
がダイカストマシン、金型、床等に付着し、工
場環境を著しく悪化させている。 The fallen mold release agent and the mold release agent that are scattered in the air adhere to die-casting machines, molds, floors, etc., significantly deteriorating the factory environment.
金型の凹凸部に対し金型合せ面と直角方向の
スプレーのため、付着が均一にならない。 Because the spray is perpendicular to the mold mating surface on the uneven parts of the mold, the adhesion is not uniform.
離型剤が金型の凹部に溜り、鋳造時に製品へ
巻込まれて不良の原因となる。 Mold release agent accumulates in the recesses of the mold and gets caught in the product during casting, causing defects.
（発明の目的）
本発明は離型剤を圧縮空気によりスプレーさせ
る上記従来の不具合を回避することを目的として
いる。特に本発明においては静電吸着方式を利用
して金型の凹凸部にも均一な完全付着を可能にし
ようとするものである。(Object of the Invention) The object of the present invention is to avoid the above-mentioned disadvantages of the conventional method in which a mold release agent is sprayed by compressed air. In particular, the present invention attempts to enable complete and uniform adhesion even to the uneven parts of the mold by utilizing an electrostatic adsorption method.
（発明の構成）
本発明はダイカスト装置の固定金型と可動金型
が開いた時、両金型間に離型剤液供給源と加圧空
気供給源とに接続された静電スプレーガンを挿入
し、両金型の内面に静電スプレーガンより離型剤
を加圧空気の噴流と共にスプレーして静電吸着さ
せるようにしたことを特徴とするダイカスト用離
型剤の静電スプレー方法である。(Structure of the Invention) The present invention provides an electrostatic spray gun connected to a release agent liquid supply source and a pressurized air supply source between the fixed mold and the movable mold of a die-casting machine when the two molds are opened. An electrostatic spraying method for a mold release agent for die casting, characterized in that the mold release agent is inserted into the molds, and the mold release agent is sprayed with a jet of pressurized air from an electrostatic spray gun onto the inner surfaces of both molds so that the mold release agent is electrostatically attracted. be.
（実施例）
第１図は本発明を用いたスプレー時の状態を示
す正面図で、開放した金型１，２の間に静電スプ
レーガン３が下降し、例えば金型１の内面１ａに
対し以オン化された離型剤４が空気と共にスプレ
ーされている。静電スプレーガン３はシリンダー
５により昇降するロツド６の下端に固定されてお
り、離型剤液供給源７からのホース８と、加圧空
気供給源９からのホース１０が接続している。ス
プレーガン３は例えばホース１０から供給される
加圧空気により作動する発電機と高電圧発生器を
内蔵しており、日本グレイ株式会社製のPro4000
形エアスプレーガンを使用することができる。離
型剤の電導性が不足する場合は極性溶剤を加える
ことによつてスプレー離型剤４を容易にイオン化
することができる。金型１は接地されている。(Example) FIG. 1 is a front view showing the state during spraying using the present invention, in which the electrostatic spray gun 3 is lowered between the open molds 1 and 2, and is sprayed onto the inner surface 1a of the mold 1, for example. On the other hand, the ionized mold release agent 4 is sprayed together with air. The electrostatic spray gun 3 is fixed to the lower end of a rod 6 that is raised and lowered by a cylinder 5, and is connected to a hose 8 from a release agent liquid supply source 7 and a hose 10 from a pressurized air supply source 9. The spray gun 3 has a built-in generator and a high voltage generator operated by pressurized air supplied from the hose 10, and is a Pro4000 manufactured by Nippon Gray Co., Ltd.
A shaped air spray gun can be used. If the conductivity of the mold release agent is insufficient, the spray mold release agent 4 can be easily ionized by adding a polar solvent. Mold 1 is grounded.
金型１に対し所定時間のスプレーが終了する
と、一旦スプレーを止め、又はスプレーを継続し
た状態でスプレーガン３を180゜反転し、金型２の
内面２ａに対し同様に静電吸着方式でスプレーを
行う。金型２も接地されている。 After spraying the mold 1 for a predetermined period of time, stop the spraying, or turn the spray gun 3 180 degrees while continuing to spray, and spray the inner surface 2a of the mold 2 in the same way using the electrostatic adsorption method. I do. Mold 2 is also grounded.
静電スプレーガン３として同時に金型１，２に
スプレーすることのできる２口ノズルを採用する
こともできる。又スプレーガン３の部分へ高電圧
を供給するためにホース１０内に高圧ケーブルを
配置することもできる。その場合の装置としては
デルビス社の手吹静電装置を採用することができ
る。両金型１，２の内面に所定量の離型剤が供給
されると、スプレーを止め、スプレーガン３をシ
リンダー５により上昇させ、引続き金型１，２を
閉じ、両金型内面１ａ，２ａ間にできるキヤビテ
イ内に溶湯を供給するダイカスト工程に移る。１
２はスリーブである。 A two-hole nozzle that can spray onto the molds 1 and 2 at the same time may be used as the electrostatic spray gun 3. It is also possible to arrange a high voltage cable within the hose 10 to supply high voltage to the spray gun 3 section. In this case, a hand-blown electrostatic device manufactured by Delvis Co., Ltd. can be used as the device. When a predetermined amount of mold release agent is supplied to the inner surfaces of both molds 1 and 2, the spraying is stopped, the spray gun 3 is raised by the cylinder 5, the molds 1 and 2 are closed, and the mold release agent is supplied to the inner surfaces of both molds 1a and 2. The process moves on to a die-casting process in which molten metal is supplied into the cavity formed between 2a. 1
2 is a sleeve.
第２図、第３図は金型内面の温度分布の一例を
示しており、ダイカスト用金型の温度分布は図示
のように80℃〜350℃の範囲にばらついている。
この場合スプレー装置により温度の高いP2，P3
点にはスプレー時間を長くし、離型剤吸着量を多
くする。これによりアルミニウム合金と金型との
溶着を防止することができる。 FIGS. 2 and 3 show an example of the temperature distribution on the inner surface of the mold, and the temperature distribution of the die-casting mold varies in the range of 80° C. to 350° C. as shown.
In this case, the spray equipment removes the high temperature P 2 and P 3.
To avoid this, increase the spray time and increase the amount of mold release agent adsorbed. This can prevent welding between the aluminum alloy and the mold.
温度の低いP1点ではスプレー時間を短くし、
余分な離型剤付着を防ぐ。このようにスプレーパ
ターンを変えることは効果的である。金型内面温
度に応じてスプレー時間を変化させるためには、
スプレーガンを金型内面に沿い移動させ、予め測
定した金型内面温度に応じてスプレー時間を変化
させたり、スプレーガンに温度センサーを組込
み、自動的に高温部分へ長時間スプレーが供給さ
れるように制御することもでき、又スプレーガン
を固定した状態で高温部分へ多量の離型剤が供給
されるようにスプレーパターンを予め設定するこ
ともできる。 Shorten the spray time at P 1 point where the temperature is low.
Prevents excess release agent from adhering. Changing the spray pattern in this way is effective. In order to change the spray time according to the mold inner temperature,
The spray gun can be moved along the inner surface of the mold and the spray time can be changed according to the pre-measured mold inner surface temperature, or a temperature sensor can be built into the spray gun to automatically supply spray to high-temperature areas for a long time. The spray pattern can also be set in advance so that a large amount of mold release agent is supplied to the high temperature area with the spray gun fixed.
特に鋳造時において、高温、高圧力でのアルミ
鋳込となる個所については、耐熱性に優れた特別
な離型剤を別のスプレーガンでスプレーするよう
にしてもよい。２種類又はそれ以上の離型剤を使
用する場合は、１個の標準スプレーガンに特殊仕
様の１又は複数個のスプレーガンを組合わせて複
合ノズルを形成することができる。 Particularly during casting, a special mold release agent with excellent heat resistance may be sprayed with a separate spray gun in areas where aluminum is cast under high temperature and high pressure. When using two or more types of mold release agents, one standard spray gun can be combined with one or more specially designed spray guns to form a composite nozzle.
（発明の効果）
本発明によると離型剤が静電吸着方式で金型内
面に吸着されるため前記従来方式の欠点〜が
すべて解消できる。即ち静電吸着利用のため、完
全に必要量を吸着できるようになる。特に金型の
凹凸部に対しては離型剤の付き回わりが向上し、
付着が均一になる。又スプレーガンのスプレーパ
ターンを自動的に変化させることにより完全吸着
も可能となる。勿論金型冷却も促進される。これ
により高温、高圧力のアルミ鋳込となる箇所につ
いても、離型剤付着量を確保することができ、ア
ルミと金型との溶着を可及的に防止して、しかも
離型剤の製品への巻込みが防止されるため製品の
品質も向上する。更に本発明においてはダイカス
ト装置の固定金型と可動金型が開いた時、両金型
間に離型剤液供給源と加圧空気供給源とに接続さ
れた静電スプレーガンを挿入し、両金型の内面に
静電スプレーガンより離型剤を加圧空気の噴流と
共にスプレーして静電吸着させるようにしている
ため、次のような特殊な効果が得られるのであ
る。まず離型剤液供給源７からホース８を経て静
電スプレーガン３が供給された離型剤は、加圧空
気供給源９からホース１０を経て静電スプレーガ
ン３に供給された加圧空気と共に静電スプレーガ
ン３より金型内面に吹き付けられる。即ち離型剤
は電気的現象とエアー（加圧空気の噴流）によつ
て散布される。従つてキヤビテイ面（金型内面１
ａ，２ａ等）の形状が複雑で且つ深い所まで、エ
アーを制御することにより、離型剤を均一厚さに
吹き付けかつ吸着させることができる。特に本発
明においては離型剤として液を使用するので、加
圧空気によりスプレーされる際に微細化して遠く
まで到達し、金型内面によく付着する。このよう
に電気的な吸着作用と、エアーの運動エネルギー
によつて付き回りが大幅に向上する。又静電スプ
レーガン３は金型１，２と独立して両金型１，２
間に挿入されるので、金型１，２と静電スプレー
ガン３を電気的に完全に絶縁しやすく、静電吸着
方式を採用した場合に高い電位差を保持して良好
な静電吸着が行える利点がある。(Effects of the Invention) According to the present invention, since the mold release agent is adsorbed to the inner surface of the mold by electrostatic adsorption, all of the drawbacks of the conventional methods described above can be overcome. In other words, since electrostatic adsorption is used, the required amount can be completely adsorbed. In particular, the release agent is better applied to the uneven parts of the mold,
Adhesion becomes uniform. Complete adsorption is also possible by automatically changing the spray pattern of the spray gun. Of course, mold cooling is also promoted. As a result, even in areas where aluminum is cast at high temperatures and high pressures, the amount of mold release agent adhered can be ensured, preventing welding between the aluminum and the mold as much as possible, and making it possible to make products with mold release agent. The quality of the product is also improved because it prevents it from getting caught in the water. Furthermore, in the present invention, when the fixed mold and the movable mold of the die-casting device are opened, an electrostatic spray gun connected to a release agent liquid supply source and a pressurized air supply source is inserted between the two molds, The release agent is sprayed with a jet of pressurized air onto the inner surfaces of both molds using an electrostatic spray gun, and the release agent is electrostatically attracted to the molds, resulting in the following special effects. First, the mold release agent is supplied from the mold release agent liquid supply source 7 through the hose 8 to the electrostatic spray gun 3, and the pressurized air is supplied from the pressurized air supply source 9 through the hose 10 to the electrostatic spray gun 3. At the same time, the electrostatic spray gun 3 sprays the inner surface of the mold. That is, the mold release agent is dispersed by electrical phenomena and air (jet of pressurized air). Therefore, the cavity surface (mold inner surface 1
By controlling the air, the mold release agent can be sprayed to a uniform thickness and adsorbed even in places where the shape of the parts (a, 2a, etc.) is complex and deep. In particular, in the present invention, since a liquid is used as a mold release agent, when sprayed with pressurized air, it becomes fine and reaches a long distance, and adheres well to the inner surface of the mold. In this way, the electric adsorption effect and the kinetic energy of the air greatly improve the coverage. In addition, the electrostatic spray gun 3 is attached to both the molds 1 and 2 independently of the molds 1 and 2.
Since it is inserted between them, it is easy to completely electrically insulate the molds 1 and 2 and the electrostatic spray gun 3, and when an electrostatic adsorption method is adopted, a high potential difference can be maintained and good electrostatic adsorption can be achieved. There are advantages.
第１図は本発明の使用に適した装置の正面略
図、第２図は金型内面の温度分布を示すための第
１図−矢視略図、第３図は第２図の−断
面略図である。
１，２……金型、３……静電スプレーガン、４
……静電スプレー離型剤。
Fig. 1 is a schematic front view of an apparatus suitable for use in the present invention, Fig. 2 is a schematic cross-sectional view of Fig. 1 in the direction of the arrows for showing the temperature distribution on the inner surface of the mold, and Fig. 3 is a schematic cross-sectional view of Fig. 2. be. 1, 2... Mold, 3... Electrostatic spray gun, 4
...Electrostatic spray mold release agent.
Claims (1)
た時、両金型間に離型剤液供給源と加圧空気供給
源とに接続された静電スプレーガンを挿入し、両
金型の内面に静電スプレーガンより離型剤を加圧
空気の噴流と共にスプレーして静電吸着させるよ
うにしたことを特徴とするダイカスト用離型剤の
静電スプレー方法。 ２ 金型内面温度の高い所にはスプレー時間を長
くし、金型内面温度の低い所にはスプレー時間を
短くする特許請求の範囲第１項記載のダイカスト
用離型剤の静電スプレー方法。[Claims] 1. When the fixed mold and the movable mold of the die-casting device are opened, an electrostatic spray gun connected to a release agent liquid supply source and a pressurized air supply source is inserted between the two molds. An electrostatic spraying method for a mold release agent for die casting, characterized in that the mold release agent is sprayed with a jet of pressurized air onto the inner surfaces of both molds from an electrostatic spray gun so that the mold release agent is electrostatically attracted. 2. The electrostatic spraying method for a mold release agent for die casting according to claim 1, wherein the spray time is increased in areas where the mold inner surface temperature is high, and the spray time is shortened in areas where the mold inner surface temperature is low.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16532184A JPS6142462A (en) | 1984-08-07 | 1984-08-07 | Electrostatic spraying method of parting material for die casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16532184A JPS6142462A (en) | 1984-08-07 | 1984-08-07 | Electrostatic spraying method of parting material for die casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6142462A JPS6142462A (en) | 1986-02-28 |
| JPH0250824B2 true JPH0250824B2 (en) | 1990-11-05 |
Family
ID=15810103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16532184A Granted JPS6142462A (en) | 1984-08-07 | 1984-08-07 | Electrostatic spraying method of parting material for die casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6142462A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH078426B2 (en) * | 1989-01-31 | 1995-02-01 | 株式会社アーレスティ | Device for applying powdery thermal insulation agent to the inner surface of the injection sleeve |
| JPH0698471B2 (en) * | 1988-05-25 | 1994-12-07 | 株式会社アーレスティ | Method of applying powdery heat insulating agent to the inner surface of injection sleeve |
| JPH0726035Y2 (en) * | 1989-12-27 | 1995-06-14 | 株式会社アーレスティ | Powdery thermal insulation agent coating device for injection sleeve in vertical injection type die casting machine |
| JP2552385B2 (en) * | 1990-07-31 | 1996-11-13 | 株式会社アーレスティ | Device for applying powdery heat insulating agent to the mold |
| AU5263999A (en) * | 1998-03-13 | 1999-10-11 | Wotec Automationssysteme Gmbh | Spraying device for casting molds |
| KR101118345B1 (en) | 2007-03-28 | 2012-03-09 | 도요타지도샤가부시키가이샤 | Oil-based mold release agent for casting, coating method and electrostatic coating apparatus |
| JP6006626B2 (en) * | 2012-11-30 | 2016-10-12 | アピックヤマダ株式会社 | Resin molding apparatus and resin molding method |
| WO2014083782A1 (en) | 2012-11-30 | 2014-06-05 | アピックヤマダ株式会社 | Resist film forming device and method, conductive film forming and circuit forming device and method, electromagnetic wave shield forming device and method, shortwave high-transmissibility insulation film forming device and method, fluorescent light body film forming device and method, trace material combining device and method, resin molding device, resin molding method, thin film forming device, organic electroluminescence element, bump forming device and method, wiring forming device and method, and wiring structure body |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5319926A (en) * | 1976-08-09 | 1978-02-23 | Toshiba Machine Co Ltd | Method of die casting |
| JPS5630069A (en) * | 1979-08-16 | 1981-03-26 | Hishinuma Seisakusho:Kk | Spraying apparatus for die casting machine |
-
1984
- 1984-08-07 JP JP16532184A patent/JPS6142462A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5319926A (en) * | 1976-08-09 | 1978-02-23 | Toshiba Machine Co Ltd | Method of die casting |
| JPS5630069A (en) * | 1979-08-16 | 1981-03-26 | Hishinuma Seisakusho:Kk | Spraying apparatus for die casting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6142462A (en) | 1986-02-28 |
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