JPH0794129B2 - Metal core elution method - Google Patents
Metal core elution methodInfo
- Publication number
- JPH0794129B2 JPH0794129B2 JP63311412A JP31141288A JPH0794129B2 JP H0794129 B2 JPH0794129 B2 JP H0794129B2 JP 63311412 A JP63311412 A JP 63311412A JP 31141288 A JP31141288 A JP 31141288A JP H0794129 B2 JPH0794129 B2 JP H0794129B2
- Authority
- JP
- Japan
- Prior art keywords
- metal core
- induction heating
- frequency
- elution
- coil
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
- B29C33/52—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles soluble or fusible
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、低融点金属で作られた金属中子をプラスチッ
クより鋳包んだ樹脂製品から該金属中子を高周波誘導加
熱により、溶解排出させるのに好適な方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is to melt and discharge a metal core made of a low melting point metal from a plastic product by casting the metal core by high frequency induction heating. A method suitable for
（従来技術と問題点） 従来複雑な形状の空洞を有する樹脂製品を製造するに当
っては、当該樹脂製品の融点よりも低い融点の金属で作
られた金属中子を合成樹脂により鋳包んで半製品を作
り、この半製品を誘導加熱用コイルを配置したオイルバ
スに浸し、該誘導加熱用コイルに高周波電流を供給する
ことにより金属中子を誘導加熱して溶出させるようにす
る方法がとられている。(Prior art and problems) Conventionally, in manufacturing a resin product having a cavity with a complicated shape, a metal core made of a metal having a melting point lower than that of the resin product is cast and wrapped with a synthetic resin. A method of making a semi-finished product, immersing the semi-finished product in an oil bath in which an induction heating coil is arranged, and supplying a high-frequency current to the induction heating coil to induce induction heating and elute the metal core Has been.
しかし上記のような方法においては金属中子を完全に溶
出させるまでに長い時間を要し、生産性が悪いという問
題があった。However, in the above method, it takes a long time to completely elute the metal core, and there is a problem that productivity is poor.
（目 的） 本発明は、上記の問題に鑑みてなされたもので、鋳包み
樹脂製品の中から低融点金属で作られた金属中子を効率
よく溶出する方法を提供することを目的とするものであ
る。(Aim) The present invention has been made in view of the above problems, and an object of the present invention is to provide a method for efficiently eluting a metal core made of a low melting point metal from a cast-in resin product. It is a thing.
（問題を解決するための手段） 本発明は、内部に高周波誘導加熱用コイルを配設したオ
イルバス内に、低融点金属により作られた金属中子を鋳
包んだ樹脂製品を挿入し、該高周波誘導加熱用コイルに
高周波電流を供給することにより該金属中子を誘導加熱
により溶解して排出する方法であって、前記金属中子が
溶解排出されて細くなるに従って前記供給する高周波電
流の周波数を増大させてゆくことを特徴とするものであ
る。(Means for Solving the Problem) The present invention inserts a resin product in which a metal core made of a low-melting point metal is cast into an oil bath into which a coil for high-frequency induction heating is arranged, A method of melting and discharging the metal core by induction heating by supplying a high-frequency current to a coil for high-frequency induction heating, the frequency of the high-frequency current being supplied as the metal core is melted and discharged and becomes thinner. It is characterized by increasing.
（作 用） 本発明は、上記のような解決手段を採用することによ
り、金属中子を効率よく溶解することができるようにな
り金属中子の排出を短時間の内に行なうことができる。(Operation) By adopting the above-mentioned solving means, the present invention enables the metal core to be efficiently dissolved, and the metal core can be discharged in a short time.
（実験例） 以下本発明に至るまでの実験経過について図面に基づい
て詳細に説明する。(Experimental Example) Hereinafter, an experimental process up to the present invention will be described in detail with reference to the drawings.
ａ）実験準備 第１図及び第２図において、（１）は400mmφ×550mmH
の大きさのオイルバスであって、オイル（Ｏ）が500mmH
の高さまで入れてあり、図示されないヒーターによりオ
イル（Ｏ）が150℃に加熱保持されている。またオイル
バス（１）内には太さ8mmφの鋼管によりコイル径200mm
φ、巻数６巻、コイル高さ340mmφ、にした高周波誘導
加熱コイル（２）が、出力30KW、周波数を5KHZ、10KH
Z、15KHZの３段階に切換可能にして配設されている。a) Experimental preparation In Figures 1 and 2, (1) is 400mmφ x 550mmH
The size of the oil bath is 500mmH of oil (O)
The oil (O) is heated and held at 150 ° C. by a heater (not shown). The oil bath (1) has a coil diameter of 200 mm due to a steel pipe with a diameter of 8 mm.
High frequency induction heating coil (2) with φ, 6 turns and coil height of 340 mmφ, output 30KW, frequency 5KHZ, 10KH
It is arranged so that it can be switched between three stages of Z and 15KHZ.
一方、機外において、低融点金属（Snの融点232℃より
も低い融点の合金）で作られた金属中子（Ｃ）（逆Ｙ形
状で断面が35mm×35mmの正方形を成し、高さ280mm重量
4.5kg）を4mmの厚さのプラスチックにより鋳包んだ樹脂
製品（Ｐ）を用意し、これを絶縁材で作られた取付板
（３）に対し、同じく絶縁材で作られた押え板（４）と
ボルト（５）によりこの樹脂製品（Ｐ）を取付け、この
樹脂製品（Ｐ）を取付板（３）と共に前記高周波誘導加
熱コイル（２）の内部位置に挿入し、取付板（３）を支
持部材（６）に固定し、第１図及び第２図の状態にす
る。On the other hand, outside the machine, a metal core (C) made of a low melting point metal (alloy having a melting point lower than 232 ° C. of Sn) (a reverse Y shape, a square with a cross section of 35 mm × 35 mm, and a height of 280mm weight
Prepare a resin product (P) in which 4.5 kg) is wrapped in plastic with a thickness of 4 mm, and attach it to a mounting plate (3) made of insulating material, and a holding plate (4) made of the same insulating material. ) And bolts (5) to attach this resin product (P), and insert this resin product (P) together with the attachment plate (3) into the high-frequency induction heating coil (2) inside position to attach the attachment plate (3). It is fixed to the support member (6) and brought into the state shown in FIGS. 1 and 2.
この状態で高周波誘導加熱用コイル（２）に高周波電流
を供給して金属中子（Ｃ）の溶出に関する次の実験を行
なった。In this state, a high-frequency current was supplied to the high-frequency induction heating coil (2) to perform the next experiment on the elution of the metal core (C).
ｂ）実験Ｉ 上記状態において、それぞれの樹脂製品（Ｐ）に対し5K
HZ、10KHZ、15KHZの周波数の電流を高周波誘導加熱コイ
ル（２）に供給し続け、金属中子（Ｃ）が完全に溶出さ
れるまでの時間を測定した結果は次の通りであった。b) Experiment I 5K for each resin product (P) under the above conditions
Currents of frequencies of HZ, 10KHZ and 15KHZ were continuously supplied to the high frequency induction heating coil (2), and the results of measuring the time until the metal core (C) was completely eluted were as follows.
以上の実験結果では、供給する電流の周波数を変えても
金属中子（Ｃ）全体が溶出する時間はほとんど変らなか
った。しかし上記実験において5KHZの周波数の電流を供
給した場合は、溶出の初期段階において溶出速度が速
く、ある程度溶出が進行し金属中子（Ｃ）の断面寸法が
小さくなると溶出の速度が遅くなった。また15KHZの周
波数の電流を供給した場合は、溶出の初期段階において
溶出速度が遅く溶出が進行し金属中子（Ｃ）の断面寸法
が小さくなると溶出速度が速くなることが判明した。 From the above experimental results, the time for elution of the entire metal core (C) remained almost unchanged even if the frequency of the supplied current was changed. However, in the above experiment, when a current having a frequency of 5 KHZ was supplied, the elution rate was high in the initial stage of elution, and when the elution proceeded to some extent and the cross-sectional dimension of the metal core (C) became small, the elution rate became slow. It was also found that when a current of 15 KHZ frequency was supplied, the elution rate was slow in the initial stage of elution and the elution proceeded and the elution rate increased as the cross-sectional dimension of the metal core (C) became smaller.
Ｃ）実験II 次に発明者達は、上記実験Ｉの結果から、高周波誘導加
熱コイル（２）に供給する電流の周波数は金属中子
（Ｃ）の溶出初期段階においては5KHZを使用し溶出があ
る程度進行した段階で周波数を15KHZにすることにより
溶出時間の短縮がはかれるとの推定をし、金属中子
（Ｃ）が断面寸法約15mmφ程度に達した時点（第３図参
照）で15KHZに切替えて実験を行なった結果金属中子
（Ｃ）は85秒で完全に溶出されることが判明した。C) Experiment II Next, from the results of Experiment I described above, the inventors used 5 KHZ as the frequency of the current supplied to the high frequency induction heating coil (2) in the initial stage of elution of the metal core (C). It is presumed that the elution time can be shortened by changing the frequency to 15KHZ at a stage where the metal core (C) reaches the cross-sectional dimension of about 15mmφ (see Fig. 3) and switches to 15KHZ. As a result of the experiment, it was found that the metal core (C) was completely eluted in 85 seconds.
尚上記実験では、高周波電源の装置上の制約により5KHZ
と15KHZの周波数で実験を行なったがそれぞれの値をさ
らに最適なものにすればさらに金属中子の溶出時間を短
縮し得ると考察される。It should be noted that in the above experiment, 5KHZ
Experiments were carried out at frequencies of 15 KHZ and 15 KHZ, and it is considered that the elution time of the metal core can be further shortened by optimizing each value.
また金属中子の形状、寸法等が変れば最適周波数も当然
変わるものと考えられる。Also, it is considered that the optimum frequency will naturally change if the shape, size, etc. of the metal core change.
（効 果） 以上のことから明らかなようにオイルバスを使った高周
波誘導加熱により樹脂製品から金属中子を溶出させるに
当って、金属中子が溶出により細くなるに従って供給す
る高周波電流の周波数を増大させてゆくことにより金属
中子の溶出時間を大巾に短縮することができ、その効果
は著大である。(Effect) As is clear from the above, when the metal core is eluted from the resin product by high frequency induction heating using an oil bath, the frequency of the high frequency current supplied as the metal core becomes thinner due to elution By increasing it, the elution time of the metal core can be greatly shortened, and its effect is remarkable.
図は本発明の実験状況を示すものにして第１図は実験初
期の縦断側面図、第２図は第１図におけるＡ−Ａ矢視
図、第３図は実験中間段階の縦断面図である。 （１）：オイルバス、（２）：高周波誘導加熱コイル （Ｃ）：金属中子、（Ｏ）：オイル （Ｐ）：樹脂製品FIG. 1 shows the experimental situation of the present invention. FIG. 1 is a vertical sectional side view in the initial stage of the experiment, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG. is there. (1): Oil bath, (2): High frequency induction heating coil (C): Metal core, (O): Oil (P): Resin product
Claims (1)
オイルバス内に、低融点金属により作られた金属中子を
鋳包んだ樹脂製品を挿入し、該高周波誘導加熱用コイル
に高周波電流を供給することにより該金属中子を誘導加
熱により溶解して排出する方法であって、前記金属中子
が溶解排出されて細くなるに従って前記供給する高周波
電流の周波数を増大させてゆくことを特徴とする金属中
子の溶出方法。1. A resin product in which a metal core made of a low melting point metal is cast-in is inserted into an oil bath in which a coil for high frequency induction heating is arranged, and a high frequency current is applied to the coil for high frequency induction heating. Is a method of melting the metal core by induction heating to discharge the metal core, and increasing the frequency of the supplied high-frequency current as the metal core is melted and discharged to become thinner. Elution method of metal core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63311412A JPH0794129B2 (en) | 1988-12-09 | 1988-12-09 | Metal core elution method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63311412A JPH0794129B2 (en) | 1988-12-09 | 1988-12-09 | Metal core elution method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02155705A JPH02155705A (en) | 1990-06-14 |
| JPH0794129B2 true JPH0794129B2 (en) | 1995-10-11 |
Family
ID=18016895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63311412A Expired - Fee Related JPH0794129B2 (en) | 1988-12-09 | 1988-12-09 | Metal core elution method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0794129B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4122668B1 (en) * | 2021-07-22 | 2023-11-15 | Airbus Operations GmbH | Method of manufacturing a core for producing a composite structure, a core for producing a composite structure, and method of producing a composite structure |
-
1988
- 1988-12-09 JP JP63311412A patent/JPH0794129B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02155705A (en) | 1990-06-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |