JPH03195010A - Molding mold of resin-molded coil - Google Patents
Molding mold of resin-molded coilInfo
- Publication number
- JPH03195010A JPH03195010A JP33290889A JP33290889A JPH03195010A JP H03195010 A JPH03195010 A JP H03195010A JP 33290889 A JP33290889 A JP 33290889A JP 33290889 A JP33290889 A JP 33290889A JP H03195010 A JPH03195010 A JP H03195010A
- Authority
- JP
- Japan
- Prior art keywords
- inner cylinder
- cylinder
- outer cylinder
- coil
- resin
- 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
- 238000000465 moulding Methods 0.000 title abstract description 3
- 239000011347 resin Substances 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 19
- 125000006850 spacer group Chemical group 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Insulating Of Coils (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、内筒及び外筒間に収容されたコイルの周囲に
絶縁樹脂を注入するための樹脂モールドコイルの成形型
に関する。Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention provides a mold for a resin-molded coil for injecting an insulating resin around a coil housed between an inner cylinder and an outer cylinder. Regarding.
（従来の技術）
従来の例えば乾式変圧器用樹脂モールドコイルの成形型
を第３図に示す。即ち、内筒１の外周部ニスペーサ２を
介してコイル３を装着し、コノ内筒１の外周部に外筒４
を配設し、外筒４及び内筒１の両端面部にパツキン５及
び端板６を突合わせ状態に宛がって成形型７を構成して
いる。そして、成形型７内に図示しない注入口から絶縁
樹脂８を注入して樹脂モールドコイルを製作している。(Prior Art) A conventional molding die for a resin molded coil for a dry type transformer, for example, is shown in FIG. That is, the coil 3 is attached to the outer periphery of the inner cylinder 1 via the spacer 2, and the outer cylinder 4 is attached to the outer periphery of the inner cylinder 1.
A mold 7 is constructed by disposing a gasket 5 and an end plate 6 on both end surfaces of the outer cylinder 4 and the inner cylinder 1 in a butt state. Then, an insulating resin 8 is injected into the mold 7 from an injection port (not shown) to produce a resin molded coil.
（発明が解決しようとする課題）
上述の構成においては、成形型７の組立て精度を著しく
高くしないと内筒１及び外筒４間の位置関係にずれが生
じ易く、もしずれが生じた場合には、コイル３の周囲部
の絶縁樹脂８の厚さが不均一となる。このため、絶縁樹
脂８が硬化される過程で残留歪が生じて硬化後にクラッ
クが発生するという問題がある。(Problems to be Solved by the Invention) In the above-described configuration, unless the assembly accuracy of the mold 7 is significantly increased, a shift in the positional relationship between the inner cylinder 1 and the outer cylinder 4 is likely to occur, and if a shift occurs, In this case, the thickness of the insulating resin 8 around the coil 3 becomes non-uniform. Therefore, there is a problem in that residual strain occurs during the curing process of the insulating resin 8, and cracks occur after curing.
本発明は、上記の事情に鑑みてなされたもので、その目
的は、内筒及び外筒間の位置関係にずれが生ずることを
防止できる樹脂モールドコイルの成形型を提供するにあ
る。The present invention has been made in view of the above circumstances, and an object thereof is to provide a mold for a resin molded coil that can prevent misalignment between the inner cylinder and the outer cylinder.
［発明の構成］
（課題を解決するための手段）
本発明の樹脂モールドコイルの成形型はくコイルが収容
される空間を形成する内筒及び外筒を設け、この内筒及
び外筒の両端面部に内筒及び外筒間に嵌合する突部を有
する端板を装着したところに特徴を有する。[Structure of the Invention] (Means for Solving the Problems) The mold for the resin-molded coil of the present invention is provided with an inner cylinder and an outer cylinder that form a space in which the coil is accommodated, and both ends of the inner cylinder and the outer cylinder are provided. The feature is that an end plate having a protrusion that fits between the inner cylinder and the outer cylinder is attached to the face part.
（作用）
本発明の樹脂モールドコイルの成形型は、端板の突部が
内筒及び外筒間に嵌合するので、内筒と外筒との位置関
係が一定に保持される。(Function) In the mold for the resin-molded coil of the present invention, the protrusion of the end plate fits between the inner cylinder and the outer cylinder, so that the positional relationship between the inner cylinder and the outer cylinder is maintained constant.
（実施例）
以下、本発明の一実施例につき第１図及び第２図を参照
して説明する。(Example) An example of the present invention will be described below with reference to FIGS. 1 and 2.
内筒１１の外周部にスペーサ１２を介してコイル１３が
装着され、この内筒１１の外周部に外筒１４が配設され
、外筒１４及び内筒１１の上下両端面部に端板１５及び
１６が宛がわれている。端板１５の下面外周部及び端板
１６の上面外周部１こ′は環状の突部１５ａ及び１６ａ
が形成されていて、これらが外筒１４の内周部及び内筒
１１の外周部間に夫々嵌合されている。そして、以上の
内筒１１、外筒１４及び端板１５により成形型１７を構
成している。而して、成形型１７のコイル１３が収容さ
れた空間に図示しない注入口から絶縁樹脂１８を注入し
て硬化させ、しかる後、成形型１７を分解することによ
って、乾式変圧器用の樹脂モールドコイル１９が製作さ
れる。A coil 13 is attached to the outer periphery of the inner cylinder 11 via a spacer 12, an outer cylinder 14 is arranged on the outer periphery of the inner cylinder 11, and end plates 15 and 16 has been addressed. The outer circumference of the lower surface of the end plate 15 and the outer circumference of the upper surface of the end plate 16 are annular protrusions 15a and 16a.
are formed, and these are fitted between the inner peripheral part of the outer cylinder 14 and the outer peripheral part of the inner cylinder 11, respectively. A mold 17 is constituted by the inner cylinder 11, outer cylinder 14, and end plate 15 described above. The insulating resin 18 is injected into the space in which the coil 13 of the mold 17 is housed through an injection port (not shown) and cured, and then the mold 17 is disassembled to form a resin molded coil for a dry transformer. 19 will be produced.
上記実施例によれば、スペーサ１２を介して内筒１１の
外周部に装着されたコイル１３と外筒１４との関係位置
は、端板１５及び１６の突部１５ａ及び１６ａによって
常に一定に保持されるので、コイル１３の周囲部の絶縁
樹脂１８の厚さは設定通りとなり、絶縁樹脂１８の硬化
時に残留歪が発生せず、従って、硬化後に絶縁樹脂１８
にクラックも発生しない。この場合、端板１５及び１６
の突部１５ａ及び１６ａを内筒１１及び外筒１４間に嵌
合させるだけで内筒１１及び外筒１４の位置決めを行な
い得るので、成形型１７の組立に高い精度が要求される
ことはない。しかも、前述したように端板１５及び１６
の突＠ １５ ａ及び１６ａを内筒１１及び外筒１４間
に嵌合させることにより絶縁樹脂１８のシール効果も期
待できるので、従来のような断熱性を有するパツキン５
は不要であり、それだけ絶縁樹脂１８の硬化時の冷却を
迅速に行なうことができる利点がある。According to the above embodiment, the relative position between the coil 13 attached to the outer periphery of the inner cylinder 11 via the spacer 12 and the outer cylinder 14 is always maintained constant by the protrusions 15a and 16a of the end plates 15 and 16. Therefore, the thickness of the insulating resin 18 around the coil 13 is as set, and no residual strain occurs when the insulating resin 18 is cured.
No cracks occur. In this case, the end plates 15 and 16
Since the inner cylinder 11 and the outer cylinder 14 can be positioned simply by fitting the protrusions 15a and 16a between the inner cylinder 11 and the outer cylinder 14, high precision is not required for assembling the mold 17. . Moreover, as mentioned above, the end plates 15 and 16
By fitting the protrusions 15a and 16a between the inner cylinder 11 and the outer cylinder 14, the sealing effect of the insulating resin 18 can be expected, so the packing 5 which has a heat insulating property like the conventional one can be expected.
is not necessary, and there is an advantage that the insulating resin 18 can be cooled quickly during hardening.
［発明の効果コ
本発明の樹脂モールドコイルの成形型は、内筒及び外筒
間に端板の突部を嵌合させるようにしたので、内筒及び
外筒間の位置関係にずれが生ずることを防止でき、絶縁
樹脂に残留歪によるクラックが発生することを防止でき
るという効果を奏する。[Effects of the Invention] Since the mold for the resin molded coil of the present invention has the protrusion of the end plate fitted between the inner cylinder and the outer cylinder, misalignment occurs in the positional relationship between the inner cylinder and the outer cylinder. This has the effect of preventing cracks from occurring in the insulating resin due to residual strain.
第１図は本発明の一実施例を示す縦断面図、第２図は同
樹脂モールドコイルの斜視図であり、第３図は従来例の
第１図相当図である。
図中、１１は内筒、１４は外筒、１５及び１６は端板、
１５ａ及び１６ａは突部、１７は成形型、１８は絶縁樹
脂を示す。
第 １ 図FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is a perspective view of the same resin molded coil, and FIG. 3 is a view corresponding to FIG. 1 of a conventional example. In the figure, 11 is an inner cylinder, 14 is an outer cylinder, 15 and 16 are end plates,
15a and 16a are protrusions, 17 is a mold, and 18 is an insulating resin. Figure 1
Claims (1)
、この内筒及び外筒の両端面部に装着され内筒及び外筒
間に嵌合する突部を有する端板とを具備してなる樹脂モ
ールドコイルの成形型。1. It comprises an inner tube and an outer tube that form a space in which the coil is accommodated, and an end plate that is attached to both end surfaces of the inner tube and the outer tube and has a protrusion that fits between the inner tube and the outer tube. A mold for resin molded coils.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33290889A JPH03195010A (en) | 1989-12-25 | 1989-12-25 | Molding mold of resin-molded coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33290889A JPH03195010A (en) | 1989-12-25 | 1989-12-25 | Molding mold of resin-molded coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03195010A true JPH03195010A (en) | 1991-08-26 |
Family
ID=18260149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33290889A Pending JPH03195010A (en) | 1989-12-25 | 1989-12-25 | Molding mold of resin-molded coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03195010A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014170824A (en) * | 2013-03-04 | 2014-09-18 | Tamagawa Seiki Co Ltd | Method for injecting potting material into cylindrical-shaped case of linear type differential transformer |
-
1989
- 1989-12-25 JP JP33290889A patent/JPH03195010A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014170824A (en) * | 2013-03-04 | 2014-09-18 | Tamagawa Seiki Co Ltd | Method for injecting potting material into cylindrical-shaped case of linear type differential transformer |
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