JPH03288414A - Cast-molding apparatus of iron core - Google Patents
Cast-molding apparatus of iron coreInfo
- Publication number
- JPH03288414A JPH03288414A JP2091286A JP9128690A JPH03288414A JP H03288414 A JPH03288414 A JP H03288414A JP 2091286 A JP2091286 A JP 2091286A JP 9128690 A JP9128690 A JP 9128690A JP H03288414 A JPH03288414 A JP H03288414A
- Authority
- JP
- Japan
- Prior art keywords
- core
- cast
- iron core
- mold
- casting
- 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.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000000465 moulding Methods 0.000 title abstract 6
- 239000000853 adhesive Substances 0.000 claims abstract description 15
- 230000001070 adhesive effect Effects 0.000 claims abstract description 15
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 12
- 239000000057 synthetic resin Substances 0.000 claims abstract description 12
- 238000005266 casting Methods 0.000 claims description 42
- 229920001187 thermosetting polymer Polymers 0.000 claims 2
- 238000000034 method Methods 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 description 7
- 229910001018 Cast iron Inorganic materials 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 229920003319 Araldite® Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
Landscapes
- Manufacturing Cores, Coils, And Magnets (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は送配電線に流れる電流を検出する検出器等に
用いられる注型鉄心を製作する鉄心の注型装置の改良に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in an iron core casting apparatus for manufacturing a cast iron core used in a detector or the like for detecting current flowing in a power transmission/distribution line.
第３図は従来の鉄心の注型装置を示す斜視図、第４図は
第３図のＩＶ−ＩＶ断面図、第５図は第３図のＶ−■断
面図である。これらの図において、（１）は第１と第２
の上型（２１（３１で構成された上型で、上記第１と第
２の上型（２）（３）の列内面および、下面が開口して
いる。 （３ａ）は第１と第２の上型（２］（３］の係
合部に形成された注入口、（４）は下型で、第４図に示
されるように送配電線等の線径の半径よりも若干大きい
半径Ｒの半円柱状の突起（４ａ）が中央部に形成さけて
いる。（５）は第１と第２の上型を締付ける締付ボルト
、（６）は締付ボルト（四に螺合するナツト、（７）は
下型（４）に第１と第２の上型（２１（３１を固定する
固定ボルト、（８）は上型（１１，下型（４）、締付ボ
ルト（５１、ナツト（６）、固定ボルト（７）とで構成
された注型金型、（９）は注型金型（８）内に収納され
た半円筒状の鉄心、（ｌＯ）および（１１）は注型金型
（８）内の所定位置へ鉄心（９）を配置するため、鉄心
（９）と注型金型（８）の内面間に配設された位置決め
スペーサで、この位置決めスペーサ（１０） （１１）
の一端部は鉄心（９）の周面および鉄心（９）の側面に
接着剤で固着されている。FIG. 3 is a perspective view showing a conventional iron core casting device, FIG. 4 is a sectional view taken along line IV--IV in FIG. 3, and FIG. 5 is a sectional view taken along line V--■ in FIG. In these figures, (1) is the first and second
The upper mold (21 (31) is composed of an upper mold (31), and the inner surfaces of the rows of the first and second upper molds (2) and (3) and the lower surface are open. The injection port (4) is formed in the engagement part of the upper mold 2 (2) and (3), and the lower mold (4) is slightly larger than the radius of the wire diameter of the power transmission and distribution line, etc., as shown in Fig. 4. A semi-cylindrical projection (4a) with radius R is formed in the center. (5) is a tightening bolt that tightens the first and second upper molds, and (6) is a tightening bolt (screwed into (7) is the fixing bolt that fixes the first and second upper molds (21 (31) to the lower mold (4), (8) is the upper mold (11, lower mold (4), tightening bolt ( 51, a casting mold consisting of a nut (6) and a fixing bolt (7), (9) a semi-cylindrical iron core housed in the casting mold (8), (lO) and (11 ) is a positioning spacer placed between the iron core (9) and the inner surface of the casting mold (8) in order to place the iron core (9) at a predetermined position in the casting mold (8). (10) (11)
One end portion of the iron core (9) is fixed to the circumferential surface of the iron core (9) and the side surface of the iron core (9) with an adhesive.
次に動作について説明する０位置決めスペーサ（１０）
（１１）が固着された鉄心り）を下型（４）上に配設す
る０次に第１と第２の上型（２）（３）を下型（４）上
に係合し、下型（４）に固定ボルト（７）で締付は固定
し、そして第１と第２の上型（２１（３）を締付ボルト
（５１とナツト（６）とにより締付は型組を行なう、型
組の完了後、注型金型（７）内へ注入孔（３ａ）より注
型用合成樹脂〔日本チバガイギー株式会社製ＣＴ２Ｏ０
（エポキシ樹脂） 、ＨＴ９０３ （硬化剤〉、シリカ
（充填材）の混合物からなるアラルダイト〕を注入する
が、この注入前に上記注入用合成樹脂の第１の硬化温度
（８０〜９０℃）まで注型金型（７）を予熱する。次に
上記合成樹脂を注入孔（３ａ）より注型金型（７）内へ
注入し、８０〜９０℃で１６時間、１３０℃で２０〜２
４時間加熱する。Next, the operation of the 0 positioning spacer (10) will be explained.
(11) is fixed to the iron core) on the lower mold (4). Next, the first and second upper molds (2) and (3) are engaged on the lower mold (4), The lower mold (4) is tightened with a fixing bolt (7), and the first and second upper molds (21 (3) are tightened with a tightening bolt (51 and nut (6)) to assemble the mold. After completing the mold assembly, pour synthetic resin for casting [CT2O0 manufactured by Nihon Ciba Geigy Co., Ltd.] into the casting mold (7) through the injection hole (3a).
(epoxy resin), HT903 (curing agent), Araldite consisting of a mixture of silica (filler)], but before this injection, the synthetic resin for injection was poured to the first curing temperature (80 to 90°C). The mold (7) is preheated. Next, the synthetic resin is injected into the casting mold (7) through the injection hole (3a), heated at 80 to 90°C for 16 hours, and at 130°C for 20 to 2 hours.
Cook for 4 hours.
これらの加熱により注入された合成樹脂が硬化し、鉄心
（９）は注型される０次にこの注型された鉄心（９）を
注型金型（８）から取出す。The injected synthetic resin is cured by this heating, and the iron core (9) is cast.The cast iron core (9) is taken out from the casting mold (8).
従来の鉄心の注型装置は、鉄心と注型装置内面間に配設
され一端部が上記鉄心に接着剤で固着された位置決め用
スペーサによって、上記鉄心の位置決めを行なうように
構成されているので、予熱時や注型時における位置決め
用スペーサの鉄心からの脱落、位置決め用スペーサの鉄
心周面への接着位置ずれ等により精度の高い注型鉄心が
、得られず、また、位置決めスペーサが鉄心と共に注型
され、この注型された位置決め用スペーサと注型用合成
樹脂の界面の接着性が悪く、閃絡破壊の原因となる可能
性があり、電気的性能の良い注型鉄心が得られない等の
問題点があった。Conventional iron core casting equipment is configured to position the iron core using a positioning spacer that is disposed between the iron core and the inner surface of the casting equipment and has one end fixed to the iron core with adhesive. , a cast core with high precision cannot be obtained due to the positioning spacer falling off from the core during preheating or casting, the adhesion of the positioning spacer to the core circumferential surface being misaligned, etc. The adhesiveness of the interface between the cast positioning spacer and the cast synthetic resin is poor, which may cause flash failure, making it impossible to obtain a cast iron core with good electrical performance. There were problems such as.
この発明は上記のような問題点を解消するためなされた
もので、鉄心を精度良くかつ容易に注型することができ
ると共に電気的性能の良い注型鉄心が得られる鉄心の注
型装置を提供することを目的とする。This invention was made in order to solve the above-mentioned problems, and provides an iron core casting device that can cast an iron core with high precision and ease, and can obtain a cast iron core with good electrical performance. The purpose is to
この発明に係る鉄心の注型装置は、注型金型に金型の内
部から外部に連通ずる透孔を設は一端部に注型用合成樹
脂の硬化温度よりも高い温度で軟化する接着剤で注型用
鉄心が接着される鉄心支持ピンを上記透孔に挿入し、上
記鉄心支持ピンを固定手段によって反鉄心側に引っ張り
上記注型金型内に上記鉄心を固定するようにしたもので
ある。In the core casting device according to the present invention, a casting mold is provided with a through hole that communicates from the inside of the mold to the outside, and an adhesive that softens at a temperature higher than the curing temperature of the synthetic resin for casting is applied to one end. A core support pin to which a casting core is bonded is inserted into the through hole, and the core support pin is pulled toward the side opposite to the core by a fixing means, and the core is fixed in the casting mold. be.
この発明における鉄心の注型装置は、注型金型の透孔に
挿入された鉄心支持ピンによって注型金型内に鉄心が支
持され、鉄心と注型金型内面間に異物が埋込まれること
なく注型される。In the iron core casting device of the present invention, the core is supported in the casting mold by a core support pin inserted into a through hole of the casting mold, and foreign matter is embedded between the iron core and the inner surface of the casting mold. It is cast without any problem.
以下、第１図および第２図に示すこの発明の一実施例に
ついて説明する。An embodiment of the present invention shown in FIGS. 1 and 2 will be described below.
第１図は断面図、第２図は第１図のＩ−Ｉｔ断面図であ
り、これらの図において、第４図および第５図と異なる
ところは、下型（４）に透孔（１２）を設け、この透孔
（１２）に鉄心支持ピン（１３）を挿入すると共に、鉄
心支持ピン（１３）の上端部に鉄心（９）を注型金型（
８）に注入される注型用合成樹脂の第１の硬化温度より
も高い温度で軟化する熱軟化性の接着剤で固着した点と
、鉄心支持ピン（１３）の下端部にねじ穴（１３ａ）を
形成し、このねじ穴（１３ａ）に螺合するねじ（１４）
を下型（４）の底面にワッシャ（■５）を介し設けた点
である。Fig. 1 is a sectional view, and Fig. 2 is a sectional view taken along line I-It in Fig. 1. In these figures, the difference from Figs. 4 and 5 is that the lower die (4) has a through hole (12 ), insert the core support pin (13) into the through hole (12), and insert the core (9) into the upper end of the core support pin (13) into the casting mold (
8), and a screw hole (13a) at the lower end of the core support pin (13). ) and screwed into this screw hole (13a) (14)
is provided on the bottom surface of the lower mold (4) via a washer (■5).
次に上記のように構成された注型装置による鉄心の注型
について説明する。先ず下型（４）の上面と対向する鉄
心υ）の下面（９ａ）に鉄心支持ピン（１３）を熱軟化
温度（１１０℃）の接着剤で固着する６次にこの鉄心支
持ピン（１３）を透孔（１２）に挿入し、ねじ（１４）
を鉄心支持ピン（１３）のねじ穴（１３ａ）に螺着し、
締付けることによって下型（２）の設定位置に鉄心（９
）が固着される０次に下型（４）に第１と第２の上型（
２）（３）を固定ボルト（７）にて固定し、第１と第２
の上型（２）（３）を締付ボルト（９で締付けて型組を
行なう、型組完了後、注型金型（８）を注型請合ｊｉ５
：樹脂の第１の硬化温度である温度（８０〜９０℃）ま
で予熱する６次に注入口（３ａ）より前述の注型用合成
樹脂（日本チバガイギー株式会社製のアラルダイト〉を
注入し、８０〜９０℃で１６時間加熱し第１の硬化を行
ない、あと１３０℃で２０〜２４時間加熱し第２の硬化
を行なう。Next, casting of an iron core using the casting apparatus configured as described above will be explained. First, fix the core support pin (13) to the lower surface (9a) of the core υ, which faces the upper surface of the lower die (4), with an adhesive having a heat softening temperature (110°C). into the through hole (12) and screw (14)
into the screw hole (13a) of the core support pin (13),
By tightening, the iron core (9) is placed in the set position of the lower mold (2).
) is fixed to the zero-order lower mold (4), and the first and second upper molds (
2) Fix (3) with the fixing bolt (7) and connect the first and second
Tighten the upper molds (2) and (3) with the tightening bolts (9) and assemble the mold. After completing the mold assembly, insert the casting mold (8) into the mold.
: Preheat to the first curing temperature of the resin (80 to 90°C) 6. Next, inject the above-mentioned synthetic resin for casting (Araldite manufactured by Nippon Ciba Geigy Co., Ltd.) through the injection port (3a), and The first curing is performed by heating at ~90°C for 16 hours, and the second curing is performed by heating at 130°C for 20 to 24 hours.
鉄心支持ピン（１３）の接着剤の熱軟化温度が１１０℃
であるため、上記１３０℃による第２の硬化時に上配接
着剤は軟化しその接着強度がおちているので、この時点
でねじ（１４）をさらに締付けることより、鉄心支持ピ
ン（１３）は反鉄心側に引張られ鉄心（９）から分離す
る。 例えば熱軟化温度以下で約３ｋｇ／、、”の
接着力を持つ接着剤を使用した場合、接着断面積１００
ｗｍ”の鉄心支持ピン（１３）を使用すればＭ１６ねじ
のねじ（１４〉で１００ｋｇ−一以下のモーメントで締
付けをすれば鉄心（９）の固定ができ、熱軟化温度以下
で接着強度がｈに低下するため、２００ｋｇ −ｍの締
付けを行なえば鉄心支持ピン（１３）は鉄心（９）から
分離する。そして締付ボルト（勺、および固定ボルト（
７）を外し、注型金型（ａから注型鉄心を離型する。The heat softening temperature of the adhesive for the core support pin (13) is 110℃
Therefore, during the second curing at 130°C, the upper adhesive softens and its adhesive strength decreases, so by further tightening the screw (14) at this point, the core support pin (13) is It is pulled toward the iron core side and separated from the iron core (9). For example, when using an adhesive that has an adhesive strength of approximately 3 kg/.
If you use the core support pin (13) of ``wm'', you can fix the core (9) by tightening the M16 screw (14〉) with a moment of 100kg-1 or less, and the adhesive strength is h below the thermal softening temperature. Therefore, if the core support pin (13) is tightened to 200 kg-m, it will separate from the core (9).
7) and release the casting core from the casting mold (a).
なお、以上の実施例においては二段硬化を行なう合成樹
脂で注型するものについて述べたが、これに限らず一段
硬化で所定の特性が得られる合成樹脂でもって注型して
も良く、また鉄心支持ピンを鉄心から分離後、注型鉄心
を注型金型から離型するものについて述べたが、鉄心支
持ピンが注型鉄心に接着された状態で離型し、離型後に
注型鉄心を接着剤の軟化温度まで加熱し、注型鉄心から
支持ピンを分離するようにしても良い。In addition, although the above embodiments have been described as casting with a synthetic resin that undergoes two-stage curing, the invention is not limited to this, and may also be cast with a synthetic resin that can obtain predetermined characteristics through one-stage curing. As described above, the core support pin is separated from the core, and then the cast core is released from the mold. However, the core support pin is released from the mold while still being adhered to the core, and the cast core is removed after the core support pin is separated from the core. The support pin may be separated from the cast iron core by heating it to the softening temperature of the adhesive.
さらに下型に半円柱状の突起を形成しているが、この突
起を除去し下型の上面を平に形成しても良い。Further, although a semi-cylindrical projection is formed on the lower mold, this projection may be removed and the upper surface of the lower mold may be formed flat.
この発明によれば、注型金型の透孔に挿入固定される鉄
心支持ピンの一端部に注型用鉄心を接着剤で接着し注型
金型内に支持するように構成したので、注型用鉄心を注
型金型内に精度良く確実に固定でき、かつ注型合戒樹脂
内に鉄心位置決め用スペーサ等の異物が埋込まれないた
め、電気的にすぐれ、しかも注型精度の高い注型鉄心が
容易に得られる。According to this invention, the iron core for casting is bonded with adhesive to one end of the iron core support pin that is inserted and fixed into the through hole of the casting mold, and is supported in the casting mold. The mold core can be securely fixed in the casting mold with high precision, and foreign objects such as core positioning spacers are not embedded in the casting resin, so it has excellent electrical properties and high casting precision. A cast iron core can be easily obtained.
第１図はこの発明の一実施例を示す断面図、第２図は第
１図のＩ−ＩＦ断面図、第３図は従来の鉄心の注型装置
を示す断面図、第４図は第３図の■−■断面図、第５図
は第３図の■−■断面図である。
図において、１は注型金型、５は締付ボルト、６はナツ
ト、７は固定ボルト、１２は透孔、１３は鉄心支持ピン
、１４はねじ、１５はワッシャである。
なお、図中、同一符号は同一または相当部分を示す。FIG. 1 is a cross-sectional view showing one embodiment of the present invention, FIG. 2 is a cross-sectional view taken along I-IF in FIG. 1, FIG. 3 is a cross-sectional view showing a conventional iron core casting device, and FIG. 3 is a sectional view taken along the line ■-■ in FIG. 3, and FIG. 5 is a sectional view taken along the line ■-■ in FIG. In the figure, 1 is a casting mold, 5 is a tightening bolt, 6 is a nut, 7 is a fixing bolt, 12 is a through hole, 13 is a core support pin, 14 is a screw, and 15 is a washer. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
鉄心を収納し、上記空間内に熱硬化性合成樹脂を注入し
上記鉄心を注型するものにおいて、上記上型と下型の何
れか一方に形成され上記空間と外部とを連通する透孔と
、上記透孔に挿入され上記熱硬化性合成樹脂の硬化温度
よりも高い温度で軟化する接着剤で上記鉄心に接着され
た鉄心支持ピンと、上記鉄心支持ピンを反鉄心側に引張
り上記注型金型内に上記鉄心を固定する固定手段を設け
たことを特徴とする鉄心の注型装置。In a casting mold in which an iron core is housed in a space surrounded by an upper mold and a lower mold, and a thermosetting synthetic resin is injected into the space to cast the iron core, the upper mold and the lower mold are A through hole is formed in either side of the mold and communicates the space with the outside, and the mold is inserted into the through hole and bonded to the iron core with an adhesive that softens at a temperature higher than the curing temperature of the thermosetting synthetic resin. 1. A casting device for a core, comprising: a core support pin, and a fixing means for pulling the core support pin toward a side opposite to the core and fixing the core in the casting mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2091286A JPH03288414A (en) | 1990-04-04 | 1990-04-04 | Cast-molding apparatus of iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2091286A JPH03288414A (en) | 1990-04-04 | 1990-04-04 | Cast-molding apparatus of iron core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03288414A true JPH03288414A (en) | 1991-12-18 |
Family
ID=14022222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2091286A Pending JPH03288414A (en) | 1990-04-04 | 1990-04-04 | Cast-molding apparatus of iron core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03288414A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105023744A (en) * | 2015-08-17 | 2015-11-04 | 常州太平洋电力设备(集团)有限公司 | Adjustable core mold of wound core transformer |
-
1990
- 1990-04-04 JP JP2091286A patent/JPH03288414A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105023744A (en) * | 2015-08-17 | 2015-11-04 | 常州太平洋电力设备(集团)有限公司 | Adjustable core mold of wound core transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4729624A (en) | Ferrule for optical connector | |
| JPS6220918A (en) | Clutch disk and manufacture thereof | |
| JPH03288414A (en) | Cast-molding apparatus of iron core | |
| CA2279896C (en) | Pulley assembly having molded connection | |
| US4935085A (en) | Process for producing urethane die | |
| CA2388225A1 (en) | Method for manufacturing a polyimide sleeve | |
| US3664693A (en) | Couplings for connecting two components | |
| GB2236160A (en) | Leaf spring assemblies | |
| JP3230468B2 (en) | Braiding mandrel pulling jig and method for forming elongated braided molded product | |
| JPS59119814A (en) | Manufacture of resin sealed coil | |
| JPS62216711A (en) | Method of joining ceramics and metal | |
| JPS5853169A (en) | Lead wire device and method of producing same | |
| US2104594A (en) | Segmental pulp wheel | |
| JPS6239224A (en) | Manufacture of pipe made of composite material | |
| JPS5884725A (en) | Plastic molding provided with nonmetallic insert | |
| JPS62207615A (en) | Mold for resin sealing | |
| JPS6334255Y2 (en) | ||
| JPS6213806B2 (en) | ||
| JPS62132010A (en) | Manufacture of support material | |
| JPH06196347A (en) | Method and apparatus for manufacturing insulating resin molded form | |
| JPH07276388A (en) | Casting mold | |
| JPS6025017B2 (en) | Manufacturing method for transformer coils | |
| JPS62257805A (en) | Slip cast molding die | |
| JPH11277571A (en) | Monolithic molding method for reinforcing bonding strength between resin member and metallic member | |
| JPS6016403A (en) | Reactor |