JPH0530832Y2 - - Google Patents
Info
- Publication number
- JPH0530832Y2 JPH0530832Y2 JP14082688U JP14082688U JPH0530832Y2 JP H0530832 Y2 JPH0530832 Y2 JP H0530832Y2 JP 14082688 U JP14082688 U JP 14082688U JP 14082688 U JP14082688 U JP 14082688U JP H0530832 Y2 JPH0530832 Y2 JP H0530832Y2
- Authority
- JP
- Japan
- Prior art keywords
- core
- melting point
- point alloy
- low melting
- molded product
- 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
- 239000011162 core material Substances 0.000 claims description 119
- 238000002844 melting Methods 0.000 claims description 92
- 230000008018 melting Effects 0.000 claims description 86
- 239000000956 alloy Substances 0.000 claims description 71
- 229910045601 alloy Inorganic materials 0.000 claims description 71
- 239000013013 elastic material Substances 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000000465 moulding Methods 0.000 description 15
- 238000005266 casting Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000012779 reinforcing material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000012778 molding material Substances 0.000 description 5
- -1 No. 12 Polymers 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000000748 compression moulding Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 238000001721 transfer moulding Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920000571 Nylon 11 Polymers 0.000 description 1
- 229920003189 Nylon 4,6 Polymers 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は低融点合金中子に関し、特に、屈曲部
を有する低融点合金からなる中子本体に芯材を埋
設した低融点合金中子に関するものである。[Detailed description of the invention] [Field of industrial application] The present invention relates to a low melting point alloy core, and in particular to a low melting point alloy core in which a core material is embedded in a core body made of a low melting point alloy and having a bent part. It is something.
一般に、屈曲する筒状の中空部を有する自動車
エンジン用インテークマニホールド等の最終成形
品を成形する際に、前記中空部に合致した屈曲部
を有した中子を成形空所内に配設した状態で成形
材料を充填し、中子を内蔵した一次成形品を成形
後、この一次成形品から前記中子のみを除去して
中空部のある成形品を得る方法がある。
Generally, when molding a final molded product such as an intake manifold for an automobile engine that has a cylindrical hollow part that bends, a core having a bent part that matches the hollow part is placed in the molding cavity. There is a method of filling a molding material and molding a primary molded product with a built-in core, and then removing only the core from this primary molded product to obtain a molded product with a hollow portion.
そして、これに用いられる中子としては、中子
を内蔵した一次成形品の成形後に所定の温度に加
熱して中子を溶融、除去できる低融点合金製のも
のが知られている。 As the core used for this purpose, one made of a low melting point alloy is known, which can be heated to a predetermined temperature to melt and remove the core after forming a primary molded product containing the core.
しかしながら、従来の屈曲する筒状の中空部を
有する最終成形品を成形するために用いられてい
る低融点合金製中子にあつては、中子全体が低融
点合金からなるので中子の重量が大きくその取り
扱いが不便であるとともに、低融点合金を溶融す
る際に多量の熱エネルギーが必要となり経済的で
なく、また、低融点合金の溶融および冷却固化に
時間がかかり中子の生産性が低いという問題に加
え、この中子を利用して中空部を有する最終成形
品を成形する際に、中子を内蔵した一次成形品か
ら中子の除去に要する熱エネルギーが多量に必要
であるとともに、その溶融に時間がかかり最終成
形品の生産効率も低いという問題点を有してい
た。 However, in the case of the conventional core made of a low melting point alloy used to mold the final molded product having a bending cylindrical hollow part, the entire core is made of the low melting point alloy, so the weight of the core is It is inconvenient to handle, as it requires a large amount of thermal energy to melt the low melting point alloy, which is not economical, and it takes a long time to melt the low melting point alloy and solidify it by cooling, which reduces the productivity of the core. In addition to the problem of low energy consumption, when using this core to mold a final molded product with a hollow part, a large amount of thermal energy is required to remove the core from the primary molded product that contains the core. However, there were problems in that it took a long time to melt and the production efficiency of the final molded product was low.
本考案は上記のような従来のもののもつ問題点
を解決したものであつて、低融点合金の使用量を
低減し中子全体の重量を軽くしてその取り扱いの
不便さをなくすことができ、中子の製造に際し低
融点合金を溶融する熱エネルギーおよび時間を節
約できるとともに、低融点合金を冷却固化するに
要する時間も短縮できて中子自身の生産性を向上
するとともに、この中子を利用して中空部を有す
る最終成形品を成形する際に、中子を内蔵した一
次成形品から中子の溶融除去に要する溶融エネル
ギーおよび時間の節約ができ、最終成形品の生産
効率も向上することができる低融点合金中子を提
供することを目的としている。 The present invention solves the problems of the conventional products as described above, and reduces the amount of low melting point alloy used, reduces the overall weight of the core, and eliminates the inconvenience of handling it. When manufacturing cores, it is possible to save the thermal energy and time required to melt the low melting point alloy, and the time required to cool and solidify the low melting point alloy can also be shortened, improving the productivity of the core itself and making use of this core. When molding a final molded product with a hollow part, the melting energy and time required to melt and remove the core from the primary molded product with a built-in core can be saved, and the production efficiency of the final molded product can also be improved. The purpose is to provide a low melting point alloy core that can
上記の目的を達成するために本考案の低融点合
金製中子は、屈曲部を有する低融点合金からなる
中子本体の軸方向の略中心に、耐熱性ゴム状弾性
材からなる芯材を埋設した構成を有しており、ま
た、屈曲部を有する低融点合金からなる中子本体
の軸方向の略中心に、屈曲自在な補強材を埋設し
た耐熱性ゴム状弾性材からなる芯材を埋設した構
成を有している。
In order to achieve the above object, the low melting point alloy core of the present invention has a core material made of a heat-resistant rubber-like elastic material approximately at the axial center of the core body made of a low melting point alloy having a bent part. In addition, a core material made of a heat-resistant rubber-like elastic material with a bendable reinforcing material embedded approximately in the axial center of the core body made of a low melting point alloy and having a bent part. It has a buried configuration.
本考案は上記の構成を採用したことにより、低
融点合金の使用量を低減し中子全体の重量を軽く
するとともに、中子を製造する際の低融点合金を
溶融する熱エネルギーおよび時間を節約すること
ができることとなる。
By adopting the above structure, the present invention reduces the amount of low melting point alloy used and reduces the overall weight of the core, and saves thermal energy and time for melting the low melting point alloy when manufacturing the core. It is possible to do so.
以下、図面に示す本考案による実施例について
説明する。
Embodiments of the present invention shown in the drawings will be described below.
第１図には本考案による低融点合金中子が示さ
れていて、この低融点合金中子１は、屈曲する筒
状の中空部を有する第４図に示すような最終成形
品２０である自動車エンジン用インテークマニホ
ールドを成形する際に用いるもので、屈曲部を有
する低融点合金からなる中子本体２の軸方向の略
中心に、耐熱性ゴム状弾性材からなる芯材３を埋
設したものである。 FIG. 1 shows a low melting point alloy core according to the present invention, and this low melting point alloy core 1 is a final molded product 20 as shown in FIG. 4, which has a bending cylindrical hollow part. It is used when molding an intake manifold for an automobile engine, and has a core material 3 made of a heat-resistant rubber-like elastic material buried approximately in the axial center of a core body 2 made of a low melting point alloy and having a bent part. It is.
本発明の低融点合金中子１の中子本体２に用い
られる低融点合金としては、70〜250℃の融点を
有する錫（Sn）、ビスマス（Bi）、鉛（Pb）、カド
ミウム（Cd）、亜鉛（Zn）およびアンチモン
（Sb）のグループから選ばれる２〜４つの金属元
素を含む合金が好ましく、たとえば、(1)Bi／
Pb／Sn／Cd＝50／26.7／13.3／10（融点70℃）、
(2)Bi／Pb／Cd＝51.65／40.20／8.15（融点91.5
℃）、(3)Bi／Sn＝57／43（融点138.5℃）、(4)Pb／
Sn＝38.1／61.9（融点183℃）、(5)Sn／Zn＝91／９
（融点199℃）、(6)Pb／Sb＝87.5／12.5（融点247℃）
等が挙げられる。 The low melting point alloys used for the core body 2 of the low melting point alloy core 1 of the present invention include tin (Sn), bismuth (Bi), lead (Pb), and cadmium (Cd), which have a melting point of 70 to 250°C. , zinc (Zn) and antimony (Sb). For example, (1) Bi/
Pb/Sn/Cd=50/26.7/13.3/10 (melting point 70℃),
(2) Bi/Pb/Cd=51.65/40.20/8.15 (melting point 91.5
℃), (3) Bi/Sn=57/43 (melting point 138.5℃), (4) Pb/
Sn=38.1/61.9 (melting point 183℃), (5)Sn/Zn=91/9
(melting point 199℃), (6)Pb/Sb=87.5/12.5 (melting point 247℃)
etc.
本発明の低融点合金中子１の芯材３に用いられ
る耐熱性ゴム状弾性材としては、上記低融点合金
の融点より高い温度にさらされても劣化しないも
ので、たとえばシリコーンゴム、フツ素ゴム、ア
クリルゴム等が挙げられる。 The heat-resistant rubber-like elastic material used for the core material 3 of the low melting point alloy core 1 of the present invention is one that does not deteriorate even when exposed to a temperature higher than the melting point of the low melting point alloy, such as silicone rubber, fluorine rubber, etc. Examples include rubber and acrylic rubber.
上記のように構成した本考案による低融点合金
中子１にあつては、前記耐熱性ゴム状弾性材から
なる芯材３の比重が低融点合金からなる中子本体
２よりも小さく、中子本体２を構成する低融点合
金の使用量を低減できるので、中子１全体の重量
を軽くしてその取り扱いの不便さをなくすことが
でき、中子１の製造に際し低融点合金を溶融する
熱エネルギーおよび時間を節約できるとともに、
低融点合金を冷却固化するに要する時間も短縮で
きて中子１自身の生産性を向上するとともに、こ
の中子１を利用して中空部を有する最終成形品２
０を成形する際に、中子１を内蔵した一次成形品
から中子１の溶融除去に要する溶融エネルギーお
よ時間の節約ができ、最終成形品２０の生産効率
も向上させることができることとなる。 In the low melting point alloy core 1 of the present invention constructed as described above, the specific gravity of the core material 3 made of the heat-resistant rubber-like elastic material is smaller than the core body 2 made of the low melting point alloy, Since the amount of the low melting point alloy that constitutes the main body 2 can be reduced, the overall weight of the core 1 can be reduced and the inconvenience of handling it can be eliminated. Saves energy and time, and
The time required to cool and solidify the low melting point alloy can be shortened, improving the productivity of the core 1 itself, and using this core 1 to form a final molded product 2 having a hollow part.
0, it is possible to save the melting energy and time required to melt and remove the core 1 from the primary molded product containing the core 1, and it is also possible to improve the production efficiency of the final molded product 20. .
上記のように構成した本発明による低融点合金
中子１を製造するには、鋳造型の鋳造空所内の略
中心に中子押え等により前記耐熱性ゴム状弾性材
からなる芯材３を配設し、次に、あらかじめ融点
より５〜80℃高い温度に溶融した低融点合金を前
記芯材３を配設した鋳造空所内に充填する。低融
点合金の充填後、前記鋳造型を低融点合金の融点
温度以下に冷却して低融点合金を固化し前記芯材
３の周囲に中子本体２を形成する。低融点合金を
冷却固化した後、鋳造型を開き、鋳造品を鋳造空
所から取り出し、バリをカツトし、本発明による
低融点合金中子１を得ることができる。 In order to manufacture the low melting point alloy core 1 according to the present invention configured as described above, the core material 3 made of the heat-resistant rubber-like elastic material is placed approximately at the center of the casting cavity of the casting mold using a core holder or the like. Next, the casting cavity in which the core material 3 is disposed is filled with a low melting point alloy that has been melted in advance at a temperature 5 to 80° C. higher than the melting point. After filling the low melting point alloy, the casting mold is cooled to below the melting point temperature of the low melting point alloy to solidify the low melting point alloy and form the core body 2 around the core material 3. After cooling and solidifying the low melting point alloy, the casting mold is opened, the casting is taken out from the casting cavity, the burrs are cut off, and the low melting point alloy core 1 according to the invention can be obtained.
前記鋳造型は、鋳造前にあらかじめ低融点合金
の融点より５〜50℃低い温度に加熱しておくこと
が好ましく、さらに、鋳造後の鋳造型の冷却温度
は低融点合金の融点より３℃以上低いことが好ま
しい。 The casting mold is preferably heated in advance to a temperature 5 to 50°C lower than the melting point of the low melting point alloy before casting, and further, the cooling temperature of the casting mold after casting is 3°C or higher than the melting point of the low melting point alloy. Preferably it is low.
第２図ａ，ｂには本考案による低融点合金中子
の他の実施例が示されていて、この図に示す低融
点合金中子１１は、屈曲部を有する低融点合金か
らなる中子本体１２の軸方向の略中心に、屈曲自
在なコイルばね、針金等の補強材１３ａを埋設し
た耐熱性ゴム状弾性材からなる芯材１３を埋設し
たものである。 2a and 2b show other embodiments of the low melting point alloy core according to the present invention, and the low melting point alloy core 11 shown in this figure is a core made of a low melting point alloy having a bent portion. A core material 13 made of a heat-resistant rubber-like elastic material is embedded approximately in the axial center of the main body 12, with a reinforcing material 13a such as a bendable coil spring or wire embedded therein.
上記のような構成となる本考案による他の低融
点合金中子１１にあつては、前記屈曲自在なコイ
ルばね、針金等の補強材１３ａを埋設した耐熱性
ゴム状弾性材からなる芯材１３の比重が低融点合
金からなる中子本体１２よりも小さく、中子本体
１２を構成する低融点合金の使用量を低減できる
ので、前記実施例と同様の効果、すなわち、中子
１１全体の重量を軽くしてその取り扱いの不便さ
をなくすことができ、中子１１の製造に際し低融
点合金を溶融する熱エネルギーおよび時間を節約
できるとともに、低融点合金を冷却固化するに要
する時間も短縮できて中子１１自身の生産性を向
上するとともに、この中子１１を利用して中空部
を有する最終成形品２０を成形する際に、中子１
１を内蔵した一次成形品から中子１１の溶融除去
に要する溶融エネルギーおよ時間の節約ができ、
最終成形品２０の生産効率も向上することができ
る効果を有するとともに、さらに、前記実施例の
中子に比べて中子１１の芯材１３に屈曲自在なコ
イルばね、針金等の補強材１３ａを埋設したの
で、この芯材１３の曲げ強度を大きくすることが
でき、中子１１を内蔵する一次成形品を成形する
際に中子１１が成形材料により変形せず、精密な
中空部を有する最終成形品を成形することができ
ることとなる。 Another low-melting point alloy core 11 according to the present invention having the above-mentioned structure includes a core material 13 made of a heat-resistant rubber-like elastic material in which the bendable coil spring, wire, or other reinforcing material 13a is embedded. Since the specific gravity of the core body 12 is smaller than that of the core body 12 made of a low melting point alloy, and the amount of low melting point alloy used in the core body 12 can be reduced, the same effect as in the above embodiment can be achieved, that is, the weight of the entire core 11 can be reduced. It is possible to reduce the weight of the core 11 and eliminate the inconvenience of its handling, save thermal energy and time for melting the low melting point alloy when manufacturing the core 11, and also shorten the time required to cool and solidify the low melting point alloy. In addition to improving the productivity of the core 11 itself, when molding the final molded product 20 having a hollow part using this core 11,
The melting energy and time required to melt and remove the core 11 from the primary molded product containing the core 11 can be saved.
This has the effect of improving the production efficiency of the final molded product 20, and furthermore, compared to the core of the embodiment described above, the core material 13 of the core 11 is provided with a reinforcing material 13a such as a bendable coil spring or wire. By embedding the core material 13, the bending strength of the core material 13 can be increased, and the core material 11 will not be deformed by the molding material when molding the primary molded product containing the core material 11. This means that a molded article can be formed.
上記のように構成される本考案による低融点合
金中子１，１１は、圧縮成形、射出成形、トラン
スフアー成形等の成形型の中子として用いられ
て、屈曲する筒状の中空部を有する最終成形品を
成形することができるものである。 The low melting point alloy cores 1 and 11 of the present invention configured as described above are used as cores for molds such as compression molding, injection molding, and transfer molding, and have a bendable cylindrical hollow part. It is possible to mold the final molded product.
以下、本考案の低融点合金中子を用いて第４図
に示すような屈曲部を有する最終成形品２０を成
形する例について説明する。 Hereinafter, an example of molding a final molded product 20 having a bent portion as shown in FIG. 4 using the low melting point alloy core of the present invention will be described.
まず、屈曲部を有する最終成形品２０形状の成
形空所をする成形型の成形空所内の所定位置に本
考案による低融点合金中子１，１１を配設する。 First, the low melting point alloy cores 1 and 11 according to the present invention are placed at predetermined positions in the molding cavity of a mold that forms the molding cavity of the final molded product 20 having a bent portion.
次に、前記中子１を配設した成形空所内に、樹
脂等の成形材料を充填し、所定時間成形した後成
形型から成形品を取り出し、前記低融点合金中子
１，１１を内蔵した一次成形品を得る。 Next, the molding cavity in which the core 1 was placed was filled with a molding material such as a resin, and after molding for a predetermined period of time, the molded product was removed from the mold, and the low melting point alloy cores 1 and 11 were incorporated. Obtain the primary molded product.
次に、前記で得られた低融点合金中子１，１１
を内蔵した一次成形品を中子本体２，１２を構成
する低融点合金の融点温度以上で、一次成形品が
熱変形する温度以下の温度に空気浴、液体浴、電
気オーブン、高周波誘導加熱等の手段により加熱
し、低融点合金中子１，１１の低融点合金を溶融
し、さらに、低融点合金が溶融した後の中空部内
に残つた芯材３，１３を取り出して屈曲する筒状
の中空部を有する最終成形品を得る。 Next, the low melting point alloy cores 1 and 11 obtained above
The primary molded product containing the low-melting point alloy is heated by means of an air bath, liquid bath, electric oven, high-frequency induction heating or the like to a temperature that is above the melting point temperature of the low-melting point alloy that constitutes the core body 2, 12 and below the temperature at which the primary molded product becomes thermally deformed, thereby melting the low-melting point alloy of the low-melting point alloy core 1, 11. Furthermore, the core material 3, 13 that remains in the hollow portion after the low-melting point alloy has melted is removed to obtain a final molded product having a bent cylindrical hollow portion.
上記芯材３，１３は、前記中子１，１１の芯材
３，１３として再利用することができる。 The core materials 3, 13 can be reused as the core materials 3, 13 of the cores 1, 11.
上記の本考案による低融点合金中子１，１１
は、射出成形、圧縮成形、トランスフアー成形等
のいずれの成形方法においても適用でき、上記の
低融点合金中子１，１１を用いて成形できる成形
材料としては、中子本体２，１２を構成する低融
点合金の融点温度付近においても熱劣化、熱変形
しない各種の樹脂材料を用いることができ、たと
えば熱可塑性樹脂としては、ナイロン６、ナイロ
ン６，６、ナイロン４，６、ナイロン１１、ナイ
ロン１２等のポリアミド樹脂、ポリブチレンテレ
フタレート、ポリフエニレンサルフアイド、ポリ
エチレン、ポリプロピレン、ポリカーボネート、
ポリアセタール等の各合成樹脂が挙げられ、熱硬
化性樹脂としては、フエノール、不飽和ポリエス
テル、シリコン、エポキシ、尿素等の各合成樹脂
が挙げられる。 The above low melting point alloy cores 1 and 11 according to the present invention
can be applied to any molding method such as injection molding, compression molding, transfer molding, etc., and the molding materials that can be molded using the above-mentioned low melting point alloy cores 1, 11 include those forming the core bodies 2, 12. Various resin materials that do not undergo thermal deterioration or thermal deformation even near the melting point temperature of the low melting point alloy can be used. For example, thermoplastic resins include nylon 6, nylon 6,6, nylon 4,6, nylon 11, and nylon. Polyamide resins such as No. 12, polybutylene terephthalate, polyphenylene sulfide, polyethylene, polypropylene, polycarbonate,
Examples of the thermosetting resin include synthetic resins such as polyacetal, and examples of the thermosetting resin include synthetic resins such as phenol, unsaturated polyester, silicone, epoxy, and urea.
本考案は上記のように構成したことにより、前
記耐熱性ゴム状弾性材からなる芯材または屈曲自
在なコイルばね、針金等の補強材を埋設した耐熱
性ゴム状弾性材からなる芯材の比重が低融点合金
からなる中子本体よりも小さく、中子本体を構成
する低融点合金の使用量を低減できるので、中子
全体の重量を軽くしてその取り扱いの不便さをな
くすことができ、中子の製造に際し低融点合金を
溶融する熱エネルギーおよび時間を節約できると
ともに、低融点合金を冷却固化するに要する時間
も短縮できて中子自身の生産性を向上するととも
に、この中子を利用して中空部を有する最終成形
品を成形する際に、中子を内蔵した一次成形品か
ら中子を溶融除去するに要する溶融エネルギーお
よ時間も節約ができ、最終成形品の生産効率も向
上させることができ、さらに、前記屈曲自在なコ
イルばね、針金等の補強材を埋設した芯材を埋設
した後者のものにあつては、低融点合金中子の曲
げ強度を大きくすることができ、中子を内蔵する
一次成形品を成形する際に中子が成形材料により
変形せず、精密な中空部を有する最終成形品を成
形することができるなどのすぐれた効果を有する
ものである。
The present invention is configured as described above, so that the specific gravity of the core material made of the heat-resistant rubber-like elastic material or the core material made of the heat-resistant rubber-like elastic material in which a reinforcing material such as a bendable coil spring or wire is embedded is achieved. is smaller than the core body made of a low melting point alloy, and the amount of low melting point alloy used to make up the core body can be reduced, making it possible to reduce the overall weight of the core and eliminate the inconvenience of handling it. When producing cores, it is possible to save the thermal energy and time required to melt the low melting point alloy, and the time required to cool and solidify the low melting point alloy can also be shortened, improving the productivity of the core itself and making use of this core. When molding a final molded product with a hollow part, the melting energy and time required to melt and remove the core from the primary molded product with a built-in core can be saved, and the production efficiency of the final molded product is also improved. Furthermore, in the case of the latter in which a core material in which a reinforcing material such as a flexible coil spring or wire is embedded is embedded, the bending strength of the low melting point alloy core can be increased, When molding a primary molded product containing a core, the core is not deformed by the molding material, and has excellent effects such as being able to mold a final molded product having a precise hollow part.
第１図は本考案による低融点合金中子の一実施
例を示す全体斜視図し、第２図ａ，ｂは本考案に
よる低融点合金の第１の実施例を示し、第２図ａ
は縦断面説明図、第２図ｂは第２ａの−線断
面説明図、第３図ａ，ｂは本考案による低融点合
金中子の第２の実施例を示し、第３図ａは縦断面
説明図、第３図ｂは第３図ａの−線断面説明
図、第４図は本発明による低融点合金中子を用い
て成形できる屈曲する筒状の中空部を有する最終
成形品の斜視図である。
１，１１……低融点合金中子、２，１２……中
子本体、３，１３……芯材、１３ａ……補強材、
２０……最終成形品。
FIG. 1 is an overall perspective view showing an embodiment of the low melting point alloy core according to the present invention, FIGS. 2a and 2b show a first embodiment of the low melting point alloy core according to the present invention, and FIG.
2b is an explanatory longitudinal cross-sectional view, FIG. 2b is an explanatory cross-sectional view along the line 2a, FIGS. 3a and b show a second embodiment of the low melting point alloy core according to the present invention, and FIG. FIG. 3b is a cross-sectional view taken along the line -- in FIG. FIG. 1, 11...Low melting point alloy core, 2, 12... Core body, 3, 13... Core material, 13a... Reinforcement material,
20...Final molded product.
Claims (1)
２の軸方向の略中心に、耐熱性ゴム状弾性材か
らなる芯材３を埋設したことを特徴とする低融
点合金中子。 (2) 屈曲部を有する低融点合金からなる中子本体
１２の軸方向の略中心に、屈曲自在な補強材１
３ａを埋設した耐熱性ゴム状弾性材からなる芯
材１３を埋設したことを特徴とする低融点合金
中子。[Claims for Utility Model Registration] (1) A core material 3 made of a heat-resistant rubber-like elastic material is embedded approximately in the axial center of a core body 2 made of a low melting point alloy and having a bent part. Low melting point alloy core. (2) A bendable reinforcing member 1 is placed approximately at the axial center of the core body 12 made of a low melting point alloy and has a bending part.
A low melting point alloy core characterized in that a core material 13 made of a heat-resistant rubber-like elastic material is embedded therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14082688U JPH0530832Y2 (en) | 1988-10-28 | 1988-10-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14082688U JPH0530832Y2 (en) | 1988-10-28 | 1988-10-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0265451U JPH0265451U (en) | 1990-05-17 |
| JPH0530832Y2 true JPH0530832Y2 (en) | 1993-08-06 |
Family
ID=31405354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14082688U Expired - Lifetime JPH0530832Y2 (en) | 1988-10-28 | 1988-10-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0530832Y2 (en) |
-
1988
- 1988-10-28 JP JP14082688U patent/JPH0530832Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0265451U (en) | 1990-05-17 |
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