JPH03119711A - Insert molding of flat coil - Google Patents
Insert molding of flat coilInfo
- Publication number
- JPH03119711A JPH03119711A JP25675189A JP25675189A JPH03119711A JP H03119711 A JPH03119711 A JP H03119711A JP 25675189 A JP25675189 A JP 25675189A JP 25675189 A JP25675189 A JP 25675189A JP H03119711 A JPH03119711 A JP H03119711A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- mold
- bobbin
- coil bobbin
- upper mold
- 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 claims abstract description 18
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 125000006850 spacer group Chemical group 0.000 abstract description 3
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Insulating Of Coils (AREA)
Abstract
Description
【発明の詳細な説明】
の１
本発明は、例えばリニアモータのコイルボビンを製造す
るための平形コイルのインサート成形法に関するもので
あり、特に、平形コイルを２個、電気的に絶縁した状態
にて一体に備えたコイルボビンを作製するためのインサ
ート成形法に関するものである。DETAILED DESCRIPTION OF THE INVENTION 1. The present invention relates to a method for insert molding flat coils for manufacturing coil bobbins for linear motors, for example, and in particular, a method for insert molding two flat coils in an electrically insulated state. The present invention relates to an insert molding method for manufacturing an integrated coil bobbin.
従ｊＪ口支歪
従来、平形コイルのインサート成形法としては、インサ
ート金型内に平形コイルを１個、配設し、該平形コイル
を囲むようにして樹脂を充填して、コイルボビンを成形
している。このインサート成形法は、別に成形して作製
されたコイル支持体に平形コイルを接着剤を用いて接合
することによりコイルボビンを形成する方式と異なり、
接着剤と各部材との接着性、各部材の接着面の表面状態
、或は接着力の経時的変化などによってコイル支持体と
コイルとが互いに剥離されるという事態を回避でき、又
、製造コストの低下をもたらす点で有利である。Conventionally, as a flat coil insert molding method, one flat coil is placed in an insert mold, and a resin is filled so as to surround the flat coil to mold a coil bobbin. This insert molding method differs from a method in which a coil bobbin is formed by bonding a flat coil to a separately molded coil support using adhesive.
It is possible to avoid the situation where the coil support body and the coil are separated from each other due to the adhesiveness between the adhesive and each member, the surface condition of the adhesive surface of each member, or changes in adhesive force over time, and the manufacturing cost can be avoided. This is advantageous in that it reduces the
が しよ と る
しかしながら、２個の平形コイルを一体に有したコイル
ボビンは、同時に２つの平形コイルを電気的に絶縁状態
にて一体に成形する技術がなく、現在では上述のように
、１つの平形コイルをインサート成形して作製されたコ
イルボビンを２つ用意し、該２つのコイルボビンを互い
に接着剤にて接合することにより得られている。However, as for the coil bobbin that has two flat coils, there is no technology to simultaneously mold the two flat coils into one body in an electrically insulated state, and currently, as mentioned above, one It is obtained by preparing two coil bobbins produced by insert molding a flat coil and joining the two coil bobbins to each other with an adhesive.
この場合には、当然に上述したような問題、つまり、接
着剤と各コイルボビンとの接着性、或は接着力の経時的
変化などによって各コイルボビンが互いに剥離されると
いう問題が発生した。又、接着剤の塗布作業、接着剤か
ら発生する有機溶剤ガスの対策などが必要となり製造コ
ストも大となった。In this case, naturally, the above-mentioned problem occurred, that is, the coil bobbins were peeled off from each other due to the adhesiveness between the adhesive and each coil bobbin, or due to changes in the adhesive force over time. In addition, manufacturing costs increased as adhesive application work and measures against organic solvent gas generated from the adhesive were required.
従って、本発明の目的は、１個の下型、２個の上型を用
い、樹脂充填を２段階に分けることで、２個の平形コイ
ルを備えたコイルボビンを容易に且つ低コストにて作製
することのできる平形コイルのインサート成形法を提供
することである。Therefore, an object of the present invention is to easily produce a coil bobbin with two flat coils at low cost by using one lower mold and two upper molds and dividing resin filling into two stages. An object of the present invention is to provide a method for insert molding a flat coil.
を ゛ るための
上記目的は本発明に斯かるインサート成形法にて完全に
達成することができる。要約すれば本発明は、下型内に
第１の平形コイルを配置して第１の上型を閉じ、樹脂充
填を行ってコイルボビン下側部分を成形すると共に、成
形後、第１の上型を外して前記コイルボビン下側部分の
上に第２の平形コイルを配置して第２の上型を閉じ、樹
脂充填を行ってコイルボビン上側部分を前記下側部分と
一体的に成形することを特徴とする平形コイルのインサ
ート成形法である。The above-mentioned object to achieve this can be completely achieved by the insert molding method of the present invention. To summarize, the present invention arranges a first flat coil in a lower mold, closes a first upper mold, fills the coil bobbin with resin to mold the lower part of the coil bobbin, and after molding, closes the first flat coil in the first upper mold. is removed, a second flat coil is placed on top of the lower part of the coil bobbin, a second upper mold is closed, and the upper part of the coil bobbin is integrally molded with the lower part by filling with resin. This is an insert molding method for flat coils.
見立Ｕ
次に、本発明に係るインサート成形法を図面を参照して
具体的に説明する。Mitate U Next, the insert molding method according to the present invention will be specifically explained with reference to the drawings.
第１図において、インサート金型の下型１が用意される
。該下型１の底面にはコイル位置決め突起１ａが設けら
れている。In FIG. 1, a lower mold 1 of an insert mold is prepared. A coil positioning projection 1a is provided on the bottom surface of the lower mold 1.
先ず、下型ｌ内に、第１のコイル２を、その突起１ａに
より位置決めして配設する（第１図（１））。この状態
で第１の上型３を閉じる。このとき、第１の上型３内の
天井部に設けたスペーサ３ａがコイル２の上面を抑え、
固定する（第１図（２））。なお、後述する理由のため
に、上型３の天井部には、第２のコイル６と同じ形状の
突起３ｂが形成されている。First, the first coil 2 is positioned and placed in the lower mold l using its protrusion 1a (FIG. 1 (1)). In this state, the first upper mold 3 is closed. At this time, the spacer 3a provided on the ceiling inside the first upper mold 3 suppresses the upper surface of the coil 2,
Fix it (Figure 1 (2)). Note that a protrusion 3b having the same shape as the second coil 6 is formed on the ceiling of the upper die 3 for reasons to be described later.
次に、金型１．３内に樹脂を充填し、コイルボビンの下
側部分８ａが成形される（第１図（３））
上型３を取外した後のボビン下側部分８ａの上面には、
上型３の突起３ｂにて形成された支持溝５が形成されて
おり、該支持溝５に合わせるようにして第２のコイル６
を装填する（第１図（４））。次いで、蓋状の第２の上
型７を閉じ、この状態で、再び樹脂を充填する（第１図
（５））。Next, the mold 1.3 is filled with resin, and the lower part 8a of the coil bobbin is molded (Fig. 1 (3)). ,
A support groove 5 is formed by the protrusion 3b of the upper mold 3, and a second coil 6 is inserted to match the support groove 5.
(Figure 1 (4)). Next, the lid-shaped second upper mold 7 is closed, and in this state, the resin is filled again (FIG. 1 (5)).
これによって、コイル支持体上側部分８ｂがその下側部
分８ａと一体的に、しかも電気的に絶縁された状態にて
成形される。このようにして成形されたコイルボビンは
、第２図のような外観を呈しており、下面及び上面に第
１及び第２のコイル２．６をモールドした形となってい
る。As a result, the upper portion 8b of the coil support body is molded integrally with the lower portion 8a thereof, and in a state in which they are electrically insulated. The coil bobbin thus formed has an appearance as shown in FIG. 2, and has first and second coils 2.6 molded on the lower and upper surfaces.
第３図に、本発明の他の実施例が示される。本実施例で
は、第１、第２コイル２．６間に電気的絶縁板９を、補
強を兼ねてインサートする場合のインサート成形法が例
示される。Another embodiment of the invention is shown in FIG. In this embodiment, an insert molding method is exemplified in which an electrically insulating plate 9 is inserted between the first and second coils 2.6 to also serve as reinforcement.
本実施例によると、下型１内にはコイル２を浮かせて支
持するためのコイル支持突起１ｂが設けられており、コ
イル２を該コイル支持突起１ｂに載置した時（第３図（
２）） コイル２の下面が下型１の底面から離れる。こ
の状態で上型３が閉じられ、コイル２上面は上型３の天
井部により抑えられて固定される。なお、後述する理由
のために、上型３の天井部には、絶縁板９と同じ形状の
突起３ｂが形成されている。According to this embodiment, a coil support protrusion 1b for floating and supporting the coil 2 is provided in the lower mold 1, and when the coil 2 is placed on the coil support protrusion 1b (see FIG.
2)) The bottom surface of the coil 2 separates from the bottom surface of the lower mold 1. In this state, the upper mold 3 is closed, and the upper surface of the coil 2 is held down and fixed by the ceiling of the upper mold 3. Note that, for reasons to be described later, a projection 3b having the same shape as the insulating plate 9 is formed on the ceiling portion of the upper mold 3.
次いで、金型１．３内に樹脂が充填され、先づコイルボ
ビンの下側部分８ａが成形される（第３図（３））。Next, the mold 1.3 is filled with resin, and the lower portion 8a of the coil bobbin is first molded (FIG. 3 (3)).
次に、上型３を外し、上型３の天井部突起３ｂにて形成
された凹所８ｃに絶縁板９を嵌合し、その上に２次側コ
イル６を載置する（第３図（４）） そして、第２の上
型７をかぶせて、その天井部にあるスペーサ７ａでコイ
ル６を上側から抑えて固定する。Next, the upper mold 3 is removed, the insulating plate 9 is fitted into the recess 8c formed by the ceiling protrusion 3b of the upper mold 3, and the secondary coil 6 is placed on it (Fig. 3). (4)) Then, the second upper mold 7 is placed on top of the second upper mold 7, and the coil 6 is held down and fixed from above by the spacer 7a on the ceiling.
この状態で再び樹脂を充填すると、コイルボビンの上側
部分８ｂがその下側部分８ａに対して、絶縁板９と共に
一体的に成形される（第３図（５）） このようにして
作製されたコイルボビンが第４図に図示される。When the resin is filled again in this state, the upper part 8b of the coil bobbin is integrally molded with the insulating plate 9 with respect to the lower part 8a (Fig. 3 (5)) The coil bobbin manufactured in this way is illustrated in FIG.
なお、上記各実施例において、上型に、下型に対して横
スベリすることのできるダブテール型のスベリ型を備え
ることによって、先づ、第５図のようにコイルボビン下
側部分８ａに蟻溝８０を形成し、次に、第６図に図示す
るように、コイルボビン上側部分８ｂを成形する際に、
上記蟻溝８ｃを樹脂で埋めるようにすることもできる。In each of the above embodiments, by providing the upper mold with a dovetail type sliding mold that can slide sideways against the lower mold, a dovetail groove is first formed in the lower part 8a of the coil bobbin as shown in FIG. 80 and then, as shown in FIG. 6, when forming the coil bobbin upper portion 8b,
It is also possible to fill the dovetail grooves 8c with resin.
このような成形型を用いれば、コイルボビンの上下側部
分８ａ、８ｂの結合状態が更に向上するという利点があ
る。If such a mold is used, there is an advantage that the state of connection between the upper and lower parts 8a and 8b of the coil bobbin is further improved.
ｌ匪二盈１
本発明は以上詳述したように、１つの下型と２つの上型
を用いるだけで、２つの平形コイルを実質的に電気的に
絶縁された状態で、１つのコイルボビンとして一体にモ
ールドすることができ、それによって、製造コストを低
（し得ると共に、構造的にも、平形コイルとコイル支持
体との結合が良好で、強度的に優れたコイルボビンが得
られる。As described in detail above, the present invention allows two flat coils to be made into one coil bobbin in a substantially electrically insulated state by simply using one lower mold and two upper molds. The coil bobbin can be integrally molded, thereby reducing the manufacturing cost and providing a structurally superior coil bobbin with good bonding between the flat coil and the coil support and excellent strength.
第１図は本発明の成形法の一実施例を示す工程図、第２
図は第１図の方法にて成形されたコイルボビンの外観斜
視図、第３図は本発明の成形法の他の実施例を示す工程
図、第４図は第３図の方法にて成形されたコイルボビン
の外観斜視図、第５図は本発明の成形法の更に他の実施
例にて成形されたコイルボビンの部分斜視図、第６図は
第５図の方法にて成形されたコイルボビンの部分外観斜
視図である。
■＝下 型
２．６：平形コイル
３．７：上 型
８ａ：コイル支持体下側部分
第１図
第３図
１
］
１゜
Ｄ
ａ
第４図Fig. 1 is a process diagram showing one embodiment of the molding method of the present invention, Fig.
The figure is an external perspective view of a coil bobbin formed by the method shown in Fig. 1, Fig. 3 is a process diagram showing another embodiment of the forming method of the present invention, and Fig. 4 is a coil bobbin formed by the method shown in Fig. 3. FIG. 5 is a partial perspective view of a coil bobbin molded by yet another embodiment of the molding method of the present invention, and FIG. 6 is a partial perspective view of a coil bobbin molded by the method shown in FIG. It is an external perspective view. ■ = Lower Mold 2.6: Flat Coil 3.7: Upper Mold 8a: Lower part of coil support Fig. 1 Fig. 3 Fig. 1 ] 1°D a Fig. 4
Claims (1)
閉じ、樹脂充填を行ってコイルボビン下側部分を成形す
ると共に、成形後、第１の上型を外して前記コイルボビ
ン下側部分の上に第２の平形コイルを配置して第２の上
型を閉じ、樹脂充填を行つてコイルボビン上側部分を前
記下側部分と一体的に成形することを特徴とする平形コ
イルのインサート成形法。1) Place the first flat coil in the lower mold, close the first upper mold, fill with resin to mold the lower part of the coil bobbin, and after molding, remove the first upper mold and remove the coil bobbin. A flat coil characterized in that a second flat coil is disposed on the lower part, a second upper mold is closed, and the upper part of the coil bobbin is integrally molded with the lower part by filling with resin. Insert molding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25675189A JPH03119711A (en) | 1989-09-29 | 1989-09-29 | Insert molding of flat coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25675189A JPH03119711A (en) | 1989-09-29 | 1989-09-29 | Insert molding of flat coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03119711A true JPH03119711A (en) | 1991-05-22 |
Family
ID=17296940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25675189A Pending JPH03119711A (en) | 1989-09-29 | 1989-09-29 | Insert molding of flat coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03119711A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006060969A (en) * | 2004-08-23 | 2006-03-02 | Yaskawa Electric Corp | Armature for coreless linear motor and linear motor |
| KR101110572B1 (en) * | 2009-07-02 | 2012-02-15 | 이석진 | Handle bar with the function of anti-theft |
| US20130002383A1 (en) * | 2010-03-20 | 2013-01-03 | Junichi Esaki | Method of manufacture for encased coil body and encased coil body |
| US20180026494A1 (en) * | 2016-07-25 | 2018-01-25 | Delta Electronics, Inc. | Micro fan |
-
1989
- 1989-09-29 JP JP25675189A patent/JPH03119711A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006060969A (en) * | 2004-08-23 | 2006-03-02 | Yaskawa Electric Corp | Armature for coreless linear motor and linear motor |
| KR101110572B1 (en) * | 2009-07-02 | 2012-02-15 | 이석진 | Handle bar with the function of anti-theft |
| US20130002383A1 (en) * | 2010-03-20 | 2013-01-03 | Junichi Esaki | Method of manufacture for encased coil body and encased coil body |
| US8834765B2 (en) * | 2010-03-20 | 2014-09-16 | Daido Steel Co., Ltd. | Method of manufacture for encased coil body |
| US20180026494A1 (en) * | 2016-07-25 | 2018-01-25 | Delta Electronics, Inc. | Micro fan |
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