JPH0832419B2 - Core melting and discharging device - Google Patents
Core melting and discharging deviceInfo
- Publication number
- JPH0832419B2 JPH0832419B2 JP63305535A JP30553588A JPH0832419B2 JP H0832419 B2 JPH0832419 B2 JP H0832419B2 JP 63305535 A JP63305535 A JP 63305535A JP 30553588 A JP30553588 A JP 30553588A JP H0832419 B2 JPH0832419 B2 JP H0832419B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- resin product
- core
- product
- induction heating
- 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)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、樹脂製品に内蔵の低融点金属中子を、当該
樹脂製品から完全に排出せしめるのに好適な装置に関す
る。TECHNICAL FIELD The present invention relates to an apparatus suitable for completely discharging a low melting point metal core contained in a resin product from the resin product.
（従来技術と課題） 複雑な形状の空洞を有する樹脂製品を製造するに当
り、当該樹脂の融点よりも低い融点を有する金属で成形
した中子（以下、金属中子という）を当該樹脂により鋳
包んで半製品を作り、その後、金属中子を溶解排出する
ことが一般に行なわれており、この金属中子の樹脂製品
からの排出は、従来、金属中子内蔵の樹脂製品をオイル
バスのオイル中に埋没させるとともに、当該金属中子を
誘導加熱により加熱して溶解し、その自重により流出せ
しめる方法によっている。しかし、溶解金属が完全には
流出せず残って製品内面に付着しており、そのため、こ
の付着して固化した金属を、ショットブラストあるいは
ブラシ等で除去しなければならず、非常に厄介であるな
どの問題があった。(Prior art and problems) When manufacturing a resin product having a cavity with a complicated shape, a core formed of a metal having a melting point lower than that of the resin (hereinafter referred to as a metal core) is cast by the resin. It is generally practiced to wrap and make a semi-finished product, and then melt and discharge the metal core.The metal core resin is conventionally discharged from a resin product with a built-in metal core by oil in an oil bath. In addition to being buried inside, the metal core is heated by induction heating to be melted, and then flows out by its own weight. However, the molten metal does not completely flow out and remains and adheres to the inner surface of the product. Therefore, the adhered and solidified metal must be removed by shot blasting or brushing, which is very troublesome. There was such a problem.
本発明は上記の問題を解消するためになされたもので
ある。The present invention has been made to solve the above problems.
（課題を解決するための手段） 上記目的を達成するために、本発明における中子の溶
解装置は、樹脂製品に内臓の低融点金属中子を誘導加熱
により加熱して溶解し排出せしめる中子の溶解排出装置
であって、オイルを貯留する加熱手段付きオイルバス
と、前記低融点金属中子内臓の樹脂製品を保持して前記
オイルバスのオイルに対して入出させる製品保持機構
と、この製品保持機構に装着されて前記低融点金属中子
内臓の樹脂製品を誘導加熱により加熱する誘導加熱手段
と、前記オイルバスのオイルを吸い上げるポンプと、こ
のポンプにより吸い上げられたオイルを前記オイルバス
のオイル中に埋没された前記樹脂製品の中空部に向けて
噴出させるノズルと、を具備したことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the core melting apparatus according to the present invention is a core for heating a resin product having a low melting point metal core by induction heating to melt and discharge the core. And an oil bath with heating means for storing oil, a product holding mechanism for holding the resin product containing the low-melting-point metal core and putting it in and out of the oil in the oil bath. Induction heating means mounted on a holding mechanism for heating the resin product containing the low-melting-point metal core by induction heating, a pump for sucking oil in the oil bath, and oil sucked by the pump for oil in the oil bath. And a nozzle for ejecting toward the hollow portion of the resin product buried therein.
（作用） このように構成されたものは、オイルバスにより所要
温度に加熱保持されたオイルの中に、低融点金属中子内
臓の樹脂製品を製品保持機構で保持して埋没させ、続い
て、樹脂製品内の低融点金属中子を誘導加熱手段により
加熱して溶解排出させる。次いで、ポンプをもってオイ
ルバス内のオイルを吸い上げるとともに、吸い上げたオ
イルをノズルから樹脂製品の中空部に向けて噴射させ
る。これにより、樹脂製品の中空部に残留付着している
溶解金属を押しだ出すことができる。(Function) In this configuration, the resin product with the low melting point metal core is held and buried in the oil heated and held at the required temperature by the oil bath by the product holding mechanism. The low-melting-point metal core in the resin product is heated by the induction heating means to be melted and discharged. Then, the pump sucks up the oil in the oil bath and jets the sucked oil from the nozzle toward the hollow portion of the resin product. Thereby, the molten metal remaining attached to the hollow portion of the resin product can be extruded.
（実施例） 実施例について図面を参照して説明すると、第１図に
示すように、内径300mm、深さ400mmのオイルバス（１）
内にオイルを350mmの高さまで貯留するとともに、当該
オイルを150℃の温度に加熱保持し、続いて、融点が232
℃より低い合金で製造するとともに35mm×35mmの正方形
断面を有しかつ90度づつ順に逆方向へ２度折れ曲って全
体として形状を成し重量が約2kgの金属中子（Ｃ）
を、肉厚3mmの樹脂で鋳包んだ樹脂製品（Ｗ）を、誘導
加熱手段（２）を備えた製品保持機構（３）に傾斜させ
て取り付け、その後、誘導加熱手段（２）と一緒に金属
中子（Ｃ）内蔵の樹脂製品（Ｗ）を前記オイルバス
（１）のオイル中に埋没させる。なお、誘導加熱手段
（２）は、直径8mmの銅管を直径150mmのコイル状に７回
巻くとともに200mmの長さに構成されたものである。(Example) An example will be described with reference to the drawings. As shown in Fig. 1, an oil bath (1) having an inner diameter of 300 mm and a depth of 400 mm.
The oil is stored up to a height of 350 mm, and the oil is heated and maintained at a temperature of 150 ° C.
A metal core (C) having a square cross section of 35 mm × 35 mm and having a square cross section of 90 mm and being bent twice in opposite directions twice each to form an overall shape and weigh about 2 kg.
Is attached to the product holding mechanism (3) provided with the induction heating means (2) by inclining the resin product (W) which is cast-in with a resin having a thickness of 3 mm, and thereafter, together with the induction heating means (2). The resin product (W) containing the metal core (C) is immersed in the oil in the oil bath (1). The induction heating means (2) is constructed by winding a copper tube having a diameter of 8 mm into a coil having a diameter of 150 mm 7 times and having a length of 200 mm.
次いで、前記誘導加熱手段（２）に出力10kw、周波数
10kHzの高周波電流を供給いて金属中子（Ｃ）を加熱溶
解排出せしめるとともに、ポンプ（４）をもってオイル
バス（１）内から吸い上げたオイルを、樹脂製品（Ｗ）
の中空部に向けてノズル（５）から噴出させ、このオイ
ルの噴出によって生じたオイルの激流により、オイルを
樹脂製品（Ｗ）の中空部を貫流させ、残留付着している
溶解金属を樹脂製品（Ｗ）の中空部から押し出し流出せ
しめる（第２図参照）。そして、ポンプ（４）の回転数
を変えてノズル（５）からのオイル噴出量を種々変化さ
せたときの結果を示すと、第１表のようになる。なお、
表中、溶融金属流出完了時間とは、オイルが貫流してい
るが、樹脂製品からの溶融金属の流出現象が完了して溶
解金属が樹脂製品（Ｗ）から流出しなくなった時点まで
の時間である。また、残留金属の重量（ｇ）とは、オイ
ルが貫流していても、樹脂製品からの流出が止まり樹脂
製品（Ｗ）内に残留した溶融金属の重量である。こうし
て金属中子（Ｃ）を樹脂製品（Ｗ）から排出させた後、
ポンプ（４）の駆動を停止するとともに、樹脂製品
（Ｗ）を製品保持機構（３）をもってオイルバス（１）
のオイル中から持ち上げ、樹脂製品（Ｗ）を製品保持機
構（３）から取り外して一サイクルを終了する。Next, output 10 kw, frequency to the induction heating means (2)
The metal core (C) is heated and melted and discharged by supplying a high frequency current of 10 kHz, and the oil sucked up from the oil bath (1) by the pump (4) is used as a resin product (W).
(5) is ejected toward the hollow part of the resin product, and the rapid flow of the oil caused by the ejection of the oil causes the oil to flow through the hollow part of the resin product (W) and the residual adhered molten metal is removed from the resin product. It is pushed out from the hollow portion of (W) and allowed to flow out (see FIG. 2). Table 1 shows the results when variously changing the amount of oil jetted from the nozzle (5) by changing the rotation speed of the pump (4). In addition,
In the table, the molten metal outflow completion time means the time until the oil flows through, but the molten metal outflow phenomenon from the resin product is completed and the molten metal stops flowing out from the resin product (W). is there. Further, the weight (g) of the residual metal is the weight of the molten metal remaining in the resin product (W) after the outflow from the resin product is stopped even if the oil flows through. After discharging the metal core (C) from the resin product (W) in this way,
The pump (4) is stopped and the resin product (W) is held by the product holding mechanism (3) in the oil bath (1).
Then, the resin product (W) is removed from the product holding mechanism (3) to complete one cycle.
第１表からはオイル噴出量を140（/min）以上にす
ると、オイルが樹脂製品（Ｗ）の中空部を貫流して樹脂
製品（Ｗ）内から溶融金属（金属中子）を完全に排出で
きることが判る。また、オイルを噴出させることにより
溶融金属を短時間（45秒）で樹脂製品から排出できるこ
とも判る。 From Table 1, when the oil ejection rate is 140 (/ min) or more, the oil flows through the hollow part of the resin product (W) and the molten metal (metal core) is completely discharged from the resin product (W). I know what I can do. It is also clear that the molten metal can be discharged from the resin product in a short time (45 seconds) by ejecting oil.
なお、上記の実施例では、ノズル（５）を固定してい
るが、ノズル（５）を移動可能にして樹脂製品（Ｗ）内
に進入させながらオイルを噴出させるようにしてもよ
い。Although the nozzle (5) is fixed in the above-mentioned embodiment, the nozzle (5) may be movable so that the oil is ejected while entering the resin product (W).
（発明の効果） 以上の説明からも明らかなように本発明は、オイルを
貯留する加熱手段付きオイルバスと、前記低融点金属中
子内臓の樹脂製品を保持して前記オイルバスのオイルに
対して入出させる製品保持機構と、この製品保持機構に
装着されて前記低融点金属中子内臓の樹脂製品を誘導加
熱により加熱する誘導加熱手段と、前記オイルバスのオ
イルを吸い上げるポンプと、このポンプにより吸い上げ
られたオイルを前記オイルバスのオイル中に埋没された
前記樹脂製品の中空部に向けて噴出させるノズルと、を
具備したから、オイルバス中で、金属中子を加熱溶解し
た後の樹脂製品の中空部に向けてオイルを噴出させるこ
とによりオイルをその中空部を貫流させることができる
ため、迅速しにして確実に金属中子を樹脂製品から排出
することができるなどの優れた効果を奏する。(Effects of the Invention) As is clear from the above description, the present invention relates to an oil bath with a heating means for storing oil, and a resin product containing the low melting point metal core and holding the oil bath with respect to the oil in the oil bath. A product holding mechanism for loading and unloading, an induction heating means attached to the product holding mechanism for heating the resin product containing the low melting point metal core by induction heating, a pump for sucking up the oil in the oil bath, and this pump. A nozzle for ejecting the sucked oil toward the hollow portion of the resin product buried in the oil in the oil bath, and the resin product after heating and melting the metal core in the oil bath. Since the oil can flow through the hollow part by ejecting the oil toward the hollow part, the metal core is quickly and surely discharged from the resin product. It has excellent effects such as being able to.
図面は本発明の一実施例の構成と作用とを説明するため
のものであって、第１図はノズルからオイルを噴射する
前の状態を示す縦断面図、第２図はノズルからオイルを
噴出・貫流させて付着した溶融金属を樹脂製品内から排
出せしめる状態を示す縦断面図である。 （１）：オイルタンク、（２）：誘導加熱手段 （５）：ノズルThe drawings are for explaining the structure and operation of one embodiment of the present invention. FIG. 1 is a vertical sectional view showing a state before oil is injected from a nozzle, and FIG. It is a longitudinal cross-sectional view showing a state in which the molten metal that has been ejected / flowed through and adhered is discharged from the inside of the resin product. (1): Oil tank, (2): Induction heating means (5): Nozzle
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−63406（ＪＰ，Ａ) 特開 昭58−212921（ＪＰ，Ａ) 特開 昭63−227310（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-58-63406 (JP, A) JP-A-58-212921 (JP, A) JP-A-63-227310 (JP, A)
Claims (1)
熱により加熱して溶解し排出せしめる中子の溶解排出装
置であって、 オイルを貯留する加熱手段付きオイルバス（１）と、 前記低融点金属中子内臓の樹脂製品を保持して前記オイ
ルバス（１）のオイルに対して入出させる製品保持機構
（３）と、 この製品保持機構（３）に装着されて前記低融点金属中
子内臓の樹脂製品を誘導加熱により加熱する誘導加熱手
段（２）と、 前記オイルバス（１）のオイルを吸い上げるポンプ
（４）と、 このポンプ（４）により吸い上げられたオイルを、前記
オイルバス（１）のオイル中に埋没された前記樹脂製品
の中空部に向けて噴出させるノズル（５）と、 を具備したことを特徴とする中子の溶解排出装置。1. A melting and discharging device for a core, which melts and discharges a low melting point metal core with a built-in resin product by induction heating in a resin product, comprising an oil bath (1) with heating means for storing oil, A product holding mechanism (3) for holding the resin product containing the low melting metal core and holding it in and out of the oil in the oil bath (1), and the low melting metal attached to the product holding mechanism (3). Induction heating means (2) for heating the resin product of the core by induction heating, a pump (4) for sucking up the oil in the oil bath (1), and the oil sucked up by the pump (4) for the oil A nozzle (5) for ejecting toward the hollow part of the resin product buried in the oil of the bath (1), and a melt-discharging device for the core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63305535A JPH0832419B2 (en) | 1988-12-02 | 1988-12-02 | Core melting and discharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63305535A JPH0832419B2 (en) | 1988-12-02 | 1988-12-02 | Core melting and discharging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02151411A JPH02151411A (en) | 1990-06-11 |
| JPH0832419B2 true JPH0832419B2 (en) | 1996-03-29 |
Family
ID=17946324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63305535A Expired - Fee Related JPH0832419B2 (en) | 1988-12-02 | 1988-12-02 | Core melting and discharging device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0832419B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03106612A (en) * | 1989-09-20 | 1991-05-07 | Ube Ind Ltd | Resin molding method and device using core |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5863406A (en) * | 1981-10-07 | 1983-04-15 | オズン・フレンチ・ジヨイント・ストツク・コンパニ− | Method for injecting and molding workpiece of plastic substance of form with curved surface or cavity of undercut and tools used for said method |
| JPS58212921A (en) * | 1982-06-04 | 1983-12-10 | Aron Kasei Co Ltd | Molding method of plastic hollow product |
-
1988
- 1988-12-02 JP JP63305535A patent/JPH0832419B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02151411A (en) | 1990-06-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |