JP3623136B2

JP3623136B2 - Insert molding method

Info

Publication number: JP3623136B2
Application number: JP30047099A
Authority: JP
Inventors: 元伸石田
Original assignee: 西川化成株式会社
Priority date: 1999-10-22
Filing date: 1999-10-22
Publication date: 2005-02-23
Anticipated expiration: 2019-10-22
Also published as: JP2001113562A

Description

【０００１】
【発明の属する技術分野】
この発明は、電子部品等のように複数本の独立した導線が絶縁樹脂材に所定間隔をあけて並べられた状態でインサートされたインサート成形体のインサート成形方法の改良に関するものである。
【０００２】
【従来の技術】
コネクタ等の電子部品をインサート成形する方法として、例えば特開平１０−２１７２５３号公報に開示されているように、複数本の端子が金属帯板状のキャリア部に一体に並設された連続インサートを金型にセットし、この連続インサートの所定箇所に樹脂をモールドしてインサート成形した後、上記キャリア部を切断することで、複数本の独立した端子が樹脂モールドに所定間隔をあけて並べられた状態でインサートされた電子部品を得るようにしたインサート成形方法が知られている。
【０００３】
また、例えば特開平１１−７７６８７号公報に開示されているように、複数本の独立した金属端子を予め金型を用いて樹脂駒に所定間隔をあけて並べて固着しておき、これを金型にセットして樹脂をキャビティに注入することで、電子部品をインサート成形するインサート成形方法も知られている。
【０００４】
【発明が解決しようとする課題】
ところが、上記の前者のインサート成形方法では、電子部品をインサート成形した後、不要部分であるキャリア部を切断して除去しているため、成形工程以外に切断工程が別途必要で成形サイクルが長くなるとともに、成形型以外に切断装置が必要で設備費が高騰するというデメリットがある。
【０００５】
一方、後者のインサート成形方法では、複数本の金属端子を樹脂駒に固定させるには、金属端子を１本ずつ金型に並べなければならず、非常に手間が掛かるとともに、２回の成形工程が必要で上記の場合と同様に成形サイクルが長くなる。さらには、２回の成形工程を経るため、２種類の成形型が必要で設備費が高騰するというデメリットがある。
【０００６】
この発明はかかる点に鑑みてなされたものであり、その目的とするところは、１基の成形型だけで簡単かつ安価に、しかも迅速に金属端子等の導線がインサートされた電子部品等のインサート成形体を得ようとすることである。
【０００７】
【課題を解決するための手段】
上記の目的を達成するため、この発明は、上記の前者のインサート成形方法のように、複数本の導線が一体に連結された配線体を用い、成形過程で各導線を個々に分離するようにしたことを特徴とする。
【０００８】
具体的には、この発明は、複数本の導線を所定間隔をあけて並べた状態で非導電性樹脂でインサート成形するインサート成形方法を対象とし、次のような解決手段を講じた。
【０００９】
すなわち、請求項１に記載の発明は、第１成形型及び第２成形型からなる成形型と、複数本の導線が所定間隔をあけて並べられ隣り合う導線が連結部により一体に連結された配線体と、上記配線体の連結部に対応する凹部が設けられた非導電性樹脂製の第１樹脂材と、上記配線体の連結部に対応する切断用突起が設けられた非導電性樹脂製の帯状片とを用意し、上記成形型の型開き状態で、第１成形型に上記第１樹脂材をその凹部がキャビティ側に向くようにセットするとともに、上記第１樹脂材に上記配線体をその連結部が上記凹部に対応するようにセットし、一方、上記第２成形型に上記帯状片をその切断用突起がキャビティ側に向くようにかつ上記第１樹脂材の凹部に対応するようにセットし、次いで、上記成形型を型締めしてその型締め圧で上記帯状片の切断用突起を配線体の連結部に押し付けることで、当該連結部を切断して上記複数本の導線を個々に独立させ、その後、上記成形型のキャビティに非導電性樹脂を供給して第２樹脂材を上記第１樹脂材に一体に成形することで、第１樹脂材と第２樹脂材とで絶縁樹脂材を構成し、複数本の独立した導線が上記絶縁樹脂材に所定間隔をあけて並べられた状態でインサートされたインサート成形体を得ることを特徴とする。
【００１０】
上記の構成により、請求項１に記載の発明では、第１樹脂材にセットされている配線体の連結部に帯状片の切断用突起が型締め圧で押し付けられ、当該連結部が切断されて複数本の導線が個々に独立する。その後の非導電性樹脂の供給により、第２樹脂材が上記第１樹脂材に一体に成形されて絶縁樹脂材が構成され、複数本の独立した導線が上記絶縁樹脂材に所定間隔をあけて並べられた状態でインサートされたインサート成形体が得られる。
【００１１】
このように、複数本の導線が成形工程の一部である型締め工程による型締め圧を利用して個々に独立し、その後は、これに引き続いて非導電性樹脂をキャビティに供給するだけでよいことから、成形工程以外の切断工程が不要になるとともに、複数本の導線を１本ずつ並べる手間が省け、さらには２回の成形工程が不要になり、インサート成形体が簡単に得られるとともに、成形サイクルが大幅に短縮される。また、１基の成形型だけでよく、成形型以外の切断装置や２種類の成形型がいらず、その分だけ設備費が低減する。
【００１２】
請求項２に記載の発明は、第１成形型及び第２成形型からなる成形型と、複数本の導線が所定間隔をあけて並べられ隣り合う導線が連結部により一体に連結された配線体と、上記配線体の連結部に対応する凹部が設けられた非導電性樹脂製の第１樹脂材と、上記配線体の連結部に対応する切断用突起が設けられた非導電性樹脂製の帯状片とを用意し、上記成形型の型開き状態で、第１成形型に上記第１樹脂材をその凹部がキャビティ側に向くようにセットするとともに、上記第１樹脂材に上記配線体をその連結部が上記凹部に対応するようにセットし、一方、上記第２成形型に上記帯状片をその切断用突起がキャビティ側に向くようにかつ上記第１樹脂材の凹部に対応するようにセットし、次いで、上記成形型を型締めしてキャビティに非導電性樹脂を射出し、その射出圧で上記帯状片の切断用突起を配線体の連結部に押し付けることで、当該連結部を切断して上記複数本の導線を個々に独立させて第２樹脂材を上記第１樹脂材に一体に成形することで、第１樹脂材と第２樹脂材とで絶縁樹脂材を構成し、複数本の独立した導線が上記絶縁樹脂材に所定間隔をあけて並べられた状態でインサートされたインサート成形体を得ることを特徴とする。
【００１３】
上記の構成により、請求項２に記載の発明では、第１樹脂材にセットされている配線体の連結部に帯状片の切断用突起がキャビティに射出された非導電性樹脂の射出圧で押し付けられ、当該連結部が切断されて複数本の導線が個々に独立する。この非導電性樹脂の射出供給により、第２樹脂材が上記第１樹脂材に一体に成形されて絶縁樹脂材が構成され、複数本の独立した導線が上記絶縁樹脂材に所定間隔をあけて並べられた状態でインサートされたインサート成形体が得られる。
【００１４】
このように、複数本の導線が成形工程の一部である非導電性樹脂の射出工程による射出圧を利用して個々に独立することから、請求項１に記載の発明と同様の作用効果が得られる。
【００１５】
請求項３に記載の発明は、第１成形型及び第２成形型からなり、第１樹脂材を成形する第１キャビティと帯状片を成形する第２キャビティとを有する成形型と、複数本の導線が所定間隔をあけて並べられ隣り合う導線が連結部により一体に連結された配線体とを用意し、上記成形型の型締め状態で、第１及び第２キャビティに非導電性樹脂を供給して上記配線体の連結部に対応する凹部が設けられた非導電性樹脂製の第１樹脂材と、上記配線体の連結部に対応する切断用突起が設けられた非導電性樹脂製の帯状片とをそれぞれ成形し、次いで、第１成形型に上記第１樹脂材を、第２成形型に上記帯状片をそれぞれ付着させた状態で上記成形型を型開きした後、上記第１樹脂材に上記配線体をその連結部が上記凹部に対応するようにセットし、その後、上記第１成形型及び第２成形型のいずれか一方をスライドさせて上記第１樹脂材と帯状片とを対面させた後、上記成形型を型締めしてその型締め圧で上記帯状片の切断用突起を配線体の連結部に押し付けることで、当該連結部を切断して上記複数本の導線を個々に独立させ、しかる後、上記成形型の第１キャビティに非導電性樹脂を供給して第２樹脂材を上記第１樹脂材に一体に成形することで、第１樹脂材と第２樹脂材とで絶縁樹脂材を構成し、複数本の独立した導線が上記絶縁樹脂材に所定間隔をあけて並べられた状態でインサートされたインサート成形体を得ることを特徴とする。
【００１６】
上記の構成により、請求項３に記載の発明では、第１樹脂材と帯状片とが１基の成形型で同時に成形される。その後は、第１成形型及び第２成形型のいずれか一方をスライドさせて上記第１樹脂材と帯状片とを対面させた後、請求項１に記載の発明と同様の手順を踏むことになる。
【００１７】
したがって、請求項１に記載の発明と同様の作用効果が得られる。加えて、第１樹脂材、帯状片及びインサート成形体の成形型を同一の成形型で兼用することで、設備費が一段と廉価なものとなる。また、成形された第１樹脂材及び帯状片を一々成形型から外さなくてよく、成形サイクルがさらに短縮される。
【００１８】
請求項４に記載の発明は、第１成形型及び第２成形型からなり、第１樹脂材を成形する第１キャビティと帯状片を成形する第２キャビティとを有する成形型と、複数本の導線が所定間隔をあけて並べられ隣り合う導線が連結部により一体に連結された配線体とを用意し、上記成形型の型締め状態で、第１及び第２キャビティに非導電性樹脂を供給して上記配線体の連結部に対応する凹部が設けられた非導電性樹脂製の第１樹脂材と、上記配線体の連結部に対応する切断用突起が設けられた非導電性樹脂製の帯状片とをそれぞれ成形し、次いで、第１成形型に上記第１樹脂材を、第２成形型に上記帯状片をそれぞれ付着させた状態で上記成形型を型開きした後、上記第１樹脂材に上記配線体をその連結部が上記凹部に対応するようにセットし、その後、上記第１成形型及び第２成形型のいずれか一方をスライドさせて上記第１樹脂材と帯状片とを対面させた後、上記成形型を型締めして第１キャビティに非導電性樹脂を射出し、その射出圧で上記帯状片の切断用突起を配線体の連結部に押し付けることで、当該連結部を切断して上記複数本の導線を個々に独立させて第２樹脂材を上記第１樹脂材に一体に成形することで、第１樹脂材と第２樹脂材とで絶縁樹脂材を構成し、複数本の独立した導線が上記絶縁樹脂材に所定間隔をあけて並べられた状態でインサートされたインサート成形体を得ることを特徴とする。
【００１９】
上記の構成により、請求項４に記載の発明では、第１樹脂材と帯状片とが１基の成形型で同時に成形される。その後は、第１成形型及び第２成形型のいずれか一方をスライドさせて上記第１樹脂材と帯状片とを対面させた後、請求項２に記載の発明と同様の手順を踏むことになる。
【００２０】
したがって、請求項３に記載の発明と同様の作用効果が得られる。
【００２１】
【発明の実施の形態】
以下、この発明の実施の形態について図面に基づいて説明する。
【００２２】
図５〜１２はこの発明の一実施形態に係るインサート成形方法の成形工程を示し、この成形工程を経ることで図１〜３に示すインサート成形体をインサート成形するようなっている。
【００２３】
インサート成形にあたり、第１成形型１及び第２成形型３からなる成形型５と配線体７（図４（ａ），（ｂ）参照）とを用意する。上記成形型５の第１成形型１には第１キャビティ９と第２キャビティ１１とが形成されている。一方、上記第２成形型３には第１コア１３が上記第１キャビティ９に対応するように形成されているとともに、第２コア１５が上記第２キャビティ１１に対応するように形成されている。また、この第２コア１５は上記第１キャビティ９にも対応するように形成されている（図８及び図９参照）。さらに、上記第１キャビティ９及び第１コア１３は、後述するインサート成形体３１の絶縁樹脂材２９を構成する第１樹脂材２３を成形するためのものであり（図２、図３及び図６（ａ），（ｂ）参照）、第１成形型１及び第２成形型３に広範囲に亘って横長矩形に形成されている。一方、上記第２キャビティ１１は、後述する帯状片２５を成形するためのものであり（図３及び図７参照）、第１成形型１の左右両サイド寄りの２箇所に縦長に形成されているが、上記第２コア１５は第１コア１３と同様に第２成形型３に広範囲に亘って形成され、その突出量は第１コア１３よりも少なく設定されている。これにより、上記絶縁樹脂材２９を構成する第２樹脂材２７を成形するようになっている。
【００２４】
上記配線体７は、４本の導線１７を所定間隔をあけて平行に並べ、隣り合う導線１７を連結部１７ａにより両端寄りで一体に連結して全体として薄板状に銅合金等の導電性材で形成されている。
【００２５】
以下にインサート成形の要領を記す。
【００２６】
（１）図５に示すように、第１キャビティ９と第１コア１３とが対面するとともに、第２キャビティ１１と第２コア１５が対面するように第１成形型１及び第２成形型３を離間させた成形型５の型開き状態から、図６（ａ），（ｂ）に示すように型締めし、この成形型５の型締め状態で、第１及び第２キャビティ９，１１にＰＢＴ（ポリブチルテレフタレート）樹脂やＰＣ−ＰＢＴ（ポリカーボネート−ポリブチルテレフタレート）樹脂等の非導電性樹脂を図示しない射出成形機のプランジャから第２成形型３に形成された樹脂通路１９を経て上記第１及び第２キャビティ９，１１に射出する。
【００２７】
この樹脂通路１９は、第１キャビティ９に開口する第１及び第２分岐部１９ａ，１９ｂ、第２キャビティ１１に開口する第３分岐部１９ｃ、第３分岐部１９ｃの側方に形成され、図６（ｂ）に示すように、第２キャビティ１１と第２コア１５を対面させた型締め状態で閉じる第４分岐部１９ｄとに分岐されている。また、上記第１分岐部１９ａと第３分岐部１９ｃとの間には第１電磁弁２１ａが、第２分岐部１９ｂと第４分岐部１９ｄとの間には第２電磁弁２１ｂが、第４分岐部１９ｄの中途には第３電磁弁２１ｃがそれぞれ介設されている。
【００２８】
そして、この図６（ａ），（ｂ）の段階では、第１電磁弁２１ａ及び第２電磁弁２１ｂを共に開くとともに、第３電磁弁２１ｃを閉じており、これにより、非導電性樹脂が第１及び第２分岐部１９ａ，１９ｂを経て第１キャビティ９に射出されるとともに、第３分岐部１９ｃを経て第２キャビティ１１に射出され、上記第１キャビティ９で非導電性樹脂製の第１樹脂材２３が横長矩形に成形され、上記第２キャビティ１１で非導電性樹脂製の帯状片２５が縦長短冊状に成形される。
【００２９】
この成形により、上記第１樹脂材２３には、上記配線体７の連結部１７ａに対応する凹部２３ａが第１コア１３の凸部１３ａによって３つ形成されているとともに、隣り合う導線１７間に対応する位置決め用ボス部２３ｂが第１コア１３の凹部１３ｂによって３つ形成されている。また、上記帯状片２５には、上記配線体７の連結部１７ａに対応する先端先鋭の切断用突起２５ａが第２キャビティ１１の凹部１１ａによって３つ形成されている。
【００３０】
（２）図７に示すように、成形型５を型開きする。この際、上記第１樹脂材２３の裏面には、第１キャビティ９の逆テーパ状の係合凸部９ａによって係合凹部２３ｃが形成され（図６（ｂ）参照）、この両者の係合により、第１樹脂材２３が第１成形型１の第１キャビティ９に確実に付着するようになっている。一方、上記帯状片２５の裏面には、第２コア１５の逆テーパ状の係合凸部１５ａによって係合凹部２５ｂが形成され（図６（ａ）参照）、この両者の係合により、帯状片２５が第２成形型３の第２コア１５に確実に付着するようになっている。
【００３１】
この段階で、以降の成形工程に備えて第１電磁弁２１ａ及び第２電磁弁２１ｂを閉じ、第３電磁弁２１ｃを開く。
【００３２】
（３）図８に示すように、第２成形型３を上方にスライドさせて第１樹脂材２３と帯状片２５とを対面させた後、上記第１樹脂材２３に配線体７をその連結部１７ａが上記凹部２３ａに対応するようにセットする。この際、第１樹脂材２３のボス部２３ｂを配線体７の隣り合う導線１７間に嵌合し、配線体７が位置ずれしないようにする。
【００３３】
なお、第２成形型３を上方にスライドさせる代わりに、第１成形型１を下方にスライドさせて第１樹脂材２３と帯状片２５とを対面させるようにしてもよい。また、上記ボス部２３ｂの代わりに第１樹脂材２３に凹部を形成し、配線体７の導線１７に形成した突起を上記凹部に嵌合させることで、配線体７の位置ずれを防止するようにしてもよい。
【００３４】
（４）図９に示すように、成形型５を型締めする。これにより、型締め圧が帯状片２５に作用し、帯状片２５の切断用突起２５ａ先端が配線体７の連結部１７ａに押し付けられ、図１０に拡大詳示するように、連結部１７ａが切断用突起２５ａの先端で切断され、切断用突起２５ａ先端は第１樹脂材２３の凹部２３ａに進入して４本の導線１７が互いに切り離されて個々に独立する。
【００３５】
（５）図１０に示すように、非導電性樹脂を射出成形機のプランジャから第３及び第４電磁弁２１ｃ，２１ｄを経て第１成形型１の第１キャビティ９に射出し、その射出圧で帯状片２５の係合凹部２５ｂが第２コア１５の係合凸部１５ａから外れ、帯状片２５の切断用突起２５ａ先端がさらに配線体７の連結部１７ａに押し付けられて第１樹脂材２３の凹部２３ａに進入する。これにより、図１２に拡大詳示するように、配線体７の切断された連結部１７ａが切断用突起２５ａで押し拡げられ、４本の導線１７の切離しが確実になる。
【００３６】
上記射出された非導電性樹脂は第２樹脂材２７となって第１樹脂材２３に一体に成形され、配線体７（切り離された４本の導線１７）及び帯状片２５を覆って第１樹脂材２３とで絶縁樹脂材２９を構成し、これにより、４本の独立した導線１７が絶縁樹脂材２９に所定間隔をあけて平行に並べられ、かつ両端を絶縁樹脂材２９から露出させた状態でインサートされたインサート成形体３１が得られる。なお、上記第２樹脂材２７の外面には、第２コア１５の係合凸部１５ａによって係合凹部２７ａが形成されている。
【００３７】
（６）成形型５を型開きしてインサート成形体３１を脱型し、ワンサイクルの成形を終える。上記（１）〜（５）の工程を繰り返して次のインサート成形体３１を成形する。
【００３８】
このように、上記の実施の形態では、４本の導線１７を成形工程の一部である型締め工程による型締め圧を利用して個々に独立させ、その後は、これに引き続いて非導電性樹脂を第１キャビティ９に射出するだけでよいので、成形工程以外に切断工程を経ることや、導線１７を１本ずつ並べること、さらには成形工程を２度経ること等をなくしてインサート成形体３１を簡単に成形することができるとともに、成形サイクルを大幅に短縮することができる。また、１基の成形型５だけでよく、成形型５以外の切断装置や２種類の成形型がいらない分だけ設備費を低減することができる。
【００３９】
さらに、上記の実施の形態では、第１樹脂材２３と帯状片２５とを１基の成形型５で同時に成形し、その後は、第２成形型３をスライドさせて第１樹脂材２３と帯状片２５とを対面させてインサート成形するので、第１樹脂材２３、帯状片２５及びインサート成形体３１の成形型を同一の成形型５で兼用することができ、設備費を一段と廉価なものにすることができる。また、成形された第１樹脂材２３及び帯状片２５を一々第１成形型１及び第２成形型３から外さずに済むので、成形サイクルをさらに短縮することができる。
【００４０】
なお、上記の実施の形態では、配線体７の連結部１７ａを成形型５の型締めによる型締め圧で切断するようにしたが、型締め段階では未だ連結部１７ａを切断せずに、その後の非導電性樹脂を射出する際に、その射出圧で帯状片２５の切断用突起２５ａを配線体７の連結部１７ａに押し付けて連結部１７ａを切断し、４本の導線１７を互いに切り離して個々に独立させるようにしてもよい。
【００４１】
また、上記の実施の形態では、第１成形型１に第１キャビティ９及び第２キャビティ１１を形成した１基の成形型５で第１樹脂材２３及び帯状片２５を同時に成形し、その後、第２成形型３を上方にスライドさせて上記第１樹脂材２３と帯状片２５とを合体させてインサート成形体３１を成形するようにしたが、これとは別のやり方として、予め第１樹脂材２３及び帯状片２５を別の成形型でそれぞれ成形しておき、これを成形型５の第１成形型１及び第２成形型３にそれぞれセットしてインサート成形体３１を成形するようにしてもよい。この際、配線体７の連結部１７ａの切断は、上記の実施の形態のように成形型５の型締めによる型締め圧で行ってもよく、その後の非導電性樹脂を射出する際の射出圧で行ってもよい。
【００４２】
さらに、インサート成形体３１は従来例のような電子部品に限らず、例えば自動車の内装品としてのインストルメントパネルやドアトリム等に配線を装備したものであってもよく、この場合にはこれらのパネル本体を構成する基材に配線をインサート成形したり、あるいは別途にインサート成形したインサート成形体をパネル本体を構成する基材に取り付けるようにしてもよい。
【００４３】
【発明の効果】
以上説明したように、この発明によれば、成形型内で第１樹脂材に配線体をセットするとともに、帯状片を上記配線体の複数本の導線を連結する連結部に対面させ、型締め圧で上記帯状片の切断用突起を上記配線体の連結部に押し付けて連結部を切断して複数本の導線を個々に独立させた後、キャビティに非導電性樹脂を供給して第２樹脂材を第１樹脂材に一体に成形し、複数本の独立した導線が第１樹脂材と第２樹脂材とからなる絶縁樹脂材に所定間隔をあけて並べられた状態でインサートされたインサート成形体を得るか、あるいは上記連結部の切断タイミングを非導電性樹脂の射出時に設定し、その射出圧で行うようにする。したがって、複数本の導線を一連の成形の流れの中で個々に独立させることができ、切断工程や複数本の導線を１本ずつ並べる手間、さらには２回の成形工程をなくし、インサート成形体を簡単にかつ短時間に成形することができる。また、成形型以外の切断装置や２種類の成形型がいらないので、その分だけ設備費を低減することができる。
【図面の簡単な説明】
【図１】図３のＩ−Ｉ線における断面図である。
【図２】図３のＩＩ−ＩＩ線における断面図である。
【図３】インサート成形体の平面図である。
【図４】配線体を示し、（ａ）は平面図、（ｂ）は（ａ）のＩＶ−ＩＶ線における断面図である。
【図５】第１樹脂材及び帯状片の成形前で成形型の型開き状態を示す成形工程図であり、図３のＩ−Ｉ線に相当する成形型の断面図である。
【図６】第１樹脂材及び帯状片の成形状態を示す成形工程図であり、（ａ）は図３のＩ−Ｉ線に相当する成形型の断面図、（ｂ）は図３のＩＩ−ＩＩ線に相当する断面図である。
【図７】第１樹脂材及び帯状片の成形後で成形型の型開き状態を示す成形工程図であり、図３のＩ−Ｉ線に相当する成形型の断面図である。
【図８】配線体を第１樹脂材にセットし、第２成形型をスライドさせて帯状片を第１樹脂材に対面させた状態を示す成形工程図であり、図３のＩ−Ｉ線に相当する成形型の断面図である。
【図９】成形型を型締めして配線体の連結部を切断した状態を示す成形工程図であり、図３のＩ−Ｉ線に相当する成形型の断面図である。
【図１０】図９のＡ部拡大図である。
【図１１】インサート成形体の成形状態を示す成形工程図であり、図３のＩ−Ｉ線に相当する成形型の断面図である。
【図１２】図１１のＢ部拡大図である。
【符号の説明】
１第１成形型
３第２成形型
５成形型
７配線体
９第１キャビティ
１１第２キャビティ
１７導線
１７ａ連結部
２３第１樹脂材
２３ａ凹部
２５帯状片
２５ａ切断用突起
２７第２樹脂材
２９絶縁樹脂材
３１インサート成形体[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in an insert molding method for an insert molded body in which a plurality of independent conductors are inserted in an insulating resin material at a predetermined interval like an electronic component or the like.
[0002]
[Prior art]
As a method of insert-molding an electronic component such as a connector, for example, as disclosed in Japanese Patent Laid-Open No. 10-217253, a continuous insert in which a plurality of terminals are integrally arranged in a metal band plate-like carrier portion is used. After setting the mold and molding the resin in a predetermined place of the continuous insert and insert molding, by cutting the carrier part, a plurality of independent terminals were arranged in the resin mold at predetermined intervals. There is known an insert molding method in which an electronic component inserted in a state is obtained.
[0003]
Further, as disclosed in, for example, Japanese Patent Application Laid-Open No. 11-77687, a plurality of independent metal terminals are previously fixed to a resin piece at predetermined intervals using a mold, and this is fixed to the mold. There is also known an insert molding method in which an electronic component is insert-molded by setting the resin and injecting resin into the cavity.
[0004]
[Problems to be solved by the invention]
However, in the former insert molding method, since the electronic part is insert-molded and the carrier part which is an unnecessary part is cut and removed, a cutting process is separately required in addition to the molding process and the molding cycle becomes long. At the same time, there is a demerit that a cutting device is required in addition to the mold and the equipment cost is increased.
[0005]
On the other hand, in the latter insert molding method, in order to fix a plurality of metal terminals to the resin piece, it is necessary to arrange the metal terminals one by one in the mold, which is very troublesome and requires two molding processes. And the molding cycle becomes longer as in the above case. Furthermore, since the molding process is performed twice, there is a demerit that two types of molds are required and the equipment cost increases.
[0006]
The present invention has been made in view of such a point, and an object of the present invention is to insert an electronic component or the like into which a conductive wire such as a metal terminal is quickly and easily inserted with only one molding die. It is to obtain a molded body.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention uses a wiring body in which a plurality of conductors are integrally connected as in the former insert molding method, and separates each conductor in the molding process. It is characterized by that.
[0008]
Specifically, the present invention is directed to an insert molding method in which a plurality of conductive wires are insert-molded with a non-conductive resin in a state in which a plurality of conductive wires are arranged at a predetermined interval, and the following solution is taken.
[0009]
That is, in the first aspect of the present invention, a molding die composed of the first molding die and the second molding die and a plurality of conducting wires are arranged at a predetermined interval, and adjacent conducting wires are integrally connected by a connecting portion. Non-conductive resin provided with a wiring body, a first resin material made of non-conductive resin provided with a recess corresponding to the connecting portion of the wiring body, and a cutting protrusion corresponding to the connecting portion of the wiring body The first resin material is set in the first mold so that the concave portion faces the cavity, and the wiring is connected to the first resin material. The body is set so that the connecting portion corresponds to the recess, while the strip is placed on the second mold so that the cutting projection faces the cavity and corresponds to the recess of the first resin material. Then set the mold and clamp the mold By pressing the cutting protrusions of the strips against the connecting part of the wiring body with a pressure, the connecting part is cut and the plurality of conductors are individually made independent, and then non-conductive to the mold cavity. By supplying resin and molding the second resin material integrally with the first resin material, the first resin material and the second resin material constitute an insulating resin material, and a plurality of independent conductors are insulated from the insulating material. It is characterized in that an insert molded body inserted in a state of being arranged on a resin material at a predetermined interval is obtained.
[0010]
With the above configuration, in the invention described in claim 1, the cutting protrusion of the strip is pressed by the clamping pressure to the connecting portion of the wiring body set in the first resin material, and the connecting portion is cut. Multiple wires are independent of each other. By the subsequent supply of the non-conductive resin, the second resin material is formed integrally with the first resin material to form an insulating resin material, and a plurality of independent conductors are spaced from the insulating resin material at a predetermined interval. An insert molded body that is inserted in an aligned state is obtained.
[0011]
In this way, a plurality of conductors are individually separated using the clamping pressure in the clamping process, which is a part of the molding process, and then, after that, only non-conductive resin is supplied to the cavity. Since it is good, the cutting process other than the molding process is not required, and the trouble of arranging a plurality of conductors one by one is eliminated. Furthermore, the two molding processes are not required, and an insert molded body can be obtained easily. , The molding cycle is greatly shortened. Further, only one molding die is required, and there is no need for a cutting device other than the molding die or two types of molding dies, and the equipment cost is reduced accordingly.
[0012]
According to a second aspect of the present invention, there is provided a wiring body in which a molding die composed of a first molding die and a second molding die, and a plurality of conducting wires are arranged at a predetermined interval and adjacent conducting wires are integrally connected by a connecting portion. And a first resin material made of a non-conductive resin provided with a recess corresponding to the connecting portion of the wiring body, and a non-conductive resin made of a non-conductive resin provided with a cutting projection corresponding to the connecting portion of the wiring body. A belt-shaped piece is prepared, and the first resin material is set in the first mold so that the concave portion faces the cavity side in the mold open state of the mold, and the wiring body is mounted on the first resin material. The connecting portion is set so as to correspond to the recess, while the strip-shaped piece is set on the second mold so that the projection for cutting faces the cavity side and corresponds to the recess of the first resin material. Set the mold, and then clamp the mold to guide it into the cavity. The second resin material by injecting the conductive resin and pressing the cutting projections of the strips against the connecting portion of the wiring body with the injection pressure, thereby cutting the connecting portion and making the plurality of conductors individually independent The first resin material and the second resin material constitute an insulating resin material, and a plurality of independent conductors are arranged at predetermined intervals on the insulating resin material. It is characterized in that an insert molded body inserted in a state of being obtained is obtained.
[0013]
With the above configuration, in the invention described in claim 2, the cutting protrusion of the strip is pressed against the connecting portion of the wiring body set in the first resin material with the injection pressure of the non-conductive resin injected into the cavity. The connecting portion is cut and the plurality of conductors are individually independent. By this non-conductive resin injection supply, the second resin material is formed integrally with the first resin material to form an insulating resin material, and a plurality of independent conductors are spaced from the insulating resin material at a predetermined interval. An insert molded body that is inserted in an aligned state is obtained.
[0014]
As described above, since the plurality of conductive wires are individually independent using the injection pressure of the non-conductive resin injection process which is a part of the molding process, the same effect as the invention of claim 1 can be obtained. can get.
[0015]
The invention according to claim 3 is composed of a first mold and a second mold, and includes a mold having a first cavity for molding the first resin material and a second cavity for molding the strip-shaped piece, and a plurality of molds. Prepare a wiring body in which conducting wires are arranged at a predetermined interval and adjacent conducting wires are integrally connected by a connecting portion, and supply non-conductive resin to the first and second cavities in the clamped state of the mold And a first resin material made of non-conductive resin provided with a recess corresponding to the connecting portion of the wiring body, and a non-conductive resin made of non-conductive resin provided with a cutting projection corresponding to the connecting portion of the wiring body. Each of the strip pieces is molded, and then the mold is opened with the first resin material attached to the first mold and the strip pieces attached to the second mold, and then the first resin is opened. Set the wiring body on the material so that the connecting portion corresponds to the recess, After sliding either one of the first mold and the second mold so that the first resin material and the strip-shaped pieces face each other, the mold is clamped and the mold clamping pressure is used as described above. By pressing the cutting protrusions of the belt-like piece against the connecting portion of the wiring body, the connecting portion is cut to separate the plurality of conductors individually, and then the non-conductive resin is placed in the first cavity of the mold. And the second resin material is integrally formed with the first resin material, so that the first resin material and the second resin material constitute an insulating resin material, and a plurality of independent conductors are the insulating resin material. It is characterized in that an insert molded body inserted in a state of being arranged on a material at a predetermined interval is obtained.
[0016]
With the above configuration, in the invention according to claim 3, the first resin material and the strip-like piece are simultaneously molded with one molding die. Thereafter, either one of the first mold and the second mold is slid to face the first resin material and the strip, and then the same procedure as that of the invention according to claim 1 is taken. Become.
[0017]
Therefore, the same effect as that of the first aspect of the invention can be obtained. In addition, the facility cost can be further reduced by using the first resin material, the strip-shaped piece, and the insert mold as the same mold. Moreover, it is not necessary to remove the molded first resin material and the strip-like piece from the molding die one by one, and the molding cycle is further shortened.
[0018]
The invention according to claim 4 comprises a first mold and a second mold, a mold having a first cavity for molding the first resin material and a second cavity for molding a strip, and a plurality of molds. Prepare a wiring body in which conducting wires are arranged at a predetermined interval and adjacent conducting wires are integrally connected by a connecting portion, and supply non-conductive resin to the first and second cavities in the clamped state of the mold And a first resin material made of non-conductive resin provided with a recess corresponding to the connecting portion of the wiring body, and a non-conductive resin made of non-conductive resin provided with a cutting projection corresponding to the connecting portion of the wiring body. Each of the strip pieces is molded, and then the mold is opened with the first resin material attached to the first mold and the strip pieces attached to the second mold, and then the first resin is opened. Set the wiring body on the material so that the connecting portion corresponds to the recess, Thereafter, either the first molding die or the second molding die is slid to face the first resin material and the strip-shaped piece, and then the molding die is clamped to make the first cavity non-conductive. The second resin material by injecting the conductive resin and pressing the cutting projections of the strips against the connecting portion of the wiring body with the injection pressure, thereby cutting the connecting portion and making the plurality of conductors individually independent The first resin material and the second resin material constitute an insulating resin material, and a plurality of independent conductors are arranged at predetermined intervals on the insulating resin material. It is characterized in that an insert molded body inserted in a state of being obtained is obtained.
[0019]
With the above configuration, in the invention described in claim 4, the first resin material and the strip-like piece are simultaneously molded with one molding die. Thereafter, either one of the first mold and the second mold is slid to face the first resin material and the strip, and then the same procedure as that of the invention according to claim 2 is taken. Become.
[0020]
Therefore, the same effect as that attained by the 3rd aspect can be attained.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0022]
5 to 12 show a molding step of the insert molding method according to one embodiment of the present invention, and the insert molded body shown in FIGS. 1 to 3 is insert-molded through this molding step.
[0023]
In insert molding, a mold 5 including the first mold 1 and the second mold 3 and a wiring body 7 (see FIGS. 4A and 4B) are prepared. A first cavity 9 and a second cavity 11 are formed in the first mold 1 of the mold 5. On the other hand, a first core 13 is formed on the second mold 3 so as to correspond to the first cavity 9, and a second core 15 is formed so as to correspond to the second cavity 11. . The second core 15 is also formed to correspond to the first cavity 9 (see FIGS. 8 and 9). Further, the first cavity 9 and the first core 13 are for molding a first resin material 23 constituting an insulating resin material 29 of an insert molded body 31 described later (FIGS. 2, 3, and 6). (Refer to (a) and (b)), the first mold 1 and the second mold 3 are formed in a horizontally long rectangle over a wide range. On the other hand, the second cavity 11 is for molding a band-like piece 25 to be described later (see FIGS. 3 and 7), and is formed vertically long at two locations near the left and right sides of the first mold 1. However, the second core 15 is formed over a wide range on the second mold 3 in the same manner as the first core 13, and the protruding amount is set to be smaller than that of the first core 13. Thereby, the second resin material 27 constituting the insulating resin material 29 is molded.
[0024]
In the wiring body 7, four conductive wires 17 are arranged in parallel at a predetermined interval, and adjacent conductive wires 17 are integrally connected near both ends by a connecting portion 17a to form a thin plate-like conductive material such as a copper alloy as a whole. It is formed with.
[0025]
The procedure for insert molding is described below.
[0026]
(1) As shown in FIG. 5, the first mold 1 and the second mold 3 so that the first cavity 9 and the first core 13 face each other, and the second cavity 11 and the second core 15 face each other. From the mold open state of the molding die 5 separated from each other, the molds are clamped as shown in FIGS. 6A and 6B, and the molds 5 are clamped in the first and second cavities 9 and 11. A non-conductive resin such as PBT (polybutyl terephthalate) resin or PC-PBT (polycarbonate-polybutyl terephthalate) resin is passed through the resin passage 19 formed in the second mold 3 from the plunger of an injection molding machine (not shown). The first and second cavities 9 and 11 are injected.
[0027]
The resin passage 19 is formed on the side of the first and second branch portions 19a and 19b that open to the first cavity 9, the third branch portion 19c that opens to the second cavity 11, and the third branch portion 19c. As shown in FIG. 6B, the second branch portion 19d is branched into a fourth branch portion 19d that closes in a mold-clamped state in which the second cavity 11 and the second core 15 face each other. A first electromagnetic valve 21a is provided between the first branch portion 19a and the third branch portion 19c, and a second electromagnetic valve 21b is provided between the second branch portion 19b and the fourth branch portion 19d. A third electromagnetic valve 21c is interposed in the middle of the four branch portion 19d.
[0028]
6 (a) and 6 (b), the first electromagnetic valve 21a and the second electromagnetic valve 21b are both opened, and the third electromagnetic valve 21c is closed. The first and second branch portions 19a and 19b are injected into the first cavity 9, and the third branch portion 19c is injected into the second cavity 11, and the first cavity 9 is made of a nonconductive resin. 1 resin material 23 is formed in a horizontally long rectangle, and a strip 25 made of non-conductive resin is formed in a vertically long strip shape in the second cavity 11.
[0029]
As a result of the molding, three recesses 23 a corresponding to the connecting portions 17 a of the wiring body 7 are formed in the first resin material 23 by the protrusions 13 a of the first core 13, and between the adjacent conductors 17. Three corresponding positioning boss portions 23 b are formed by the concave portions 13 b of the first core 13. Further, three strip-shaped cutting projections 25 a corresponding to the connecting portions 17 a of the wiring body 7 are formed on the strip 25 by the concave portions 11 a of the second cavity 11.
[0030]
(2) As shown in FIG. 7, the mold 5 is opened. At this time, on the back surface of the first resin material 23, an engagement concave portion 23c is formed by the reverse tapered engagement convex portion 9a of the first cavity 9 (see FIG. 6B). Thus, the first resin material 23 is reliably attached to the first cavity 9 of the first mold 1. On the other hand, on the back surface of the strip 25, an engagement recess 25b is formed by the reverse taper engagement projection 15a of the second core 15 (see FIG. 6A). The piece 25 is securely attached to the second core 15 of the second mold 3.
[0031]
At this stage, the first electromagnetic valve 21a and the second electromagnetic valve 21b are closed and the third electromagnetic valve 21c is opened in preparation for the subsequent molding process.
[0032]
(3) As shown in FIG. 8, the second mold 3 is slid upward so that the first resin material 23 and the strip-shaped piece 25 face each other, and then the wiring body 7 is connected to the first resin material 23. Set so that the portion 17a corresponds to the recess 23a. At this time, the boss portion 23b of the first resin material 23 is fitted between the adjacent conductors 17 of the wiring body 7 so that the wiring body 7 is not displaced.
[0033]
Instead of sliding the second mold 3 upward, the first resin mold 23 and the strip 25 may be made to face each other by sliding the first mold 1 downward. In addition, a recess is formed in the first resin material 23 instead of the boss 23b, and a protrusion formed on the conductive wire 17 of the wiring body 7 is fitted into the recess so as to prevent the displacement of the wiring body 7. It may be.
[0034]
(4) As shown in FIG. 9, the mold 5 is clamped. As a result, the clamping pressure acts on the strip 25, the tip of the cutting projection 25a of the strip 25 is pressed against the connecting portion 17a of the wiring body 7, and the connecting portion 17a is cut as shown in detail in FIG. The leading end of the cutting projection 25a is cut, and the leading end of the cutting projection 25a enters the concave portion 23a of the first resin material 23 so that the four conductors 17 are separated from each other and are independent of each other.
[0035]
(5) As shown in FIG. 10, non-conductive resin is injected from the plunger of the injection molding machine into the first cavity 9 of the first mold 1 through the third and fourth electromagnetic valves 21c and 21d, and the injection pressure thereof. Thus, the engagement recess 25b of the strip 25 is disengaged from the engagement projection 15a of the second core 15, and the tip of the cutting projection 25a of the strip 25 is further pressed against the connecting portion 17a of the wiring body 7 so that the first resin material 23 Enters the recess 23a. As a result, as shown in detail in FIG. 12, the cut connecting portion 17a of the wiring body 7 is pushed and expanded by the cutting projection 25a, and the four conductors 17 are surely separated.
[0036]
The injected non-conductive resin becomes the second resin material 27 and is integrally formed with the first resin material 23, and covers the wiring body 7 (the separated four conductive wires 17) and the strip-like piece 25 and the first resin material 23. The insulating resin material 29 is constituted by the resin material 23, whereby four independent conductive wires 17 are arranged in parallel with the insulating resin material 29 at a predetermined interval, and both ends are exposed from the insulating resin material 29. The insert molded body 31 inserted in the state is obtained. An engaging recess 27 a is formed on the outer surface of the second resin material 27 by the engaging protrusion 15 a of the second core 15.
[0037]
(6) The mold 5 is opened to remove the insert molded body 31, and the one-cycle molding is completed. The following insert molded body 31 is molded by repeating the steps (1) to (5).
[0038]
As described above, in the above-described embodiment, the four conductors 17 are individually made independent by using the clamping pressure by the clamping process which is a part of the molding process, and thereafter, the non-conductive is subsequently performed. Since it is only necessary to inject the resin into the first cavity 9, there is no need to go through the cutting process, arrange the conductors 17 one by one, and do not go through the molding process twice. 31 can be easily molded and the molding cycle can be greatly shortened. Further, only one molding die 5 is required, and the equipment cost can be reduced by the amount that does not require a cutting device other than the molding die 5 and two types of molding dies.
[0039]
Furthermore, in said embodiment, the 1st resin material 23 and the strip | belt-shaped piece 25 are shape | molded simultaneously with the one shaping | molding die 5, and after that, the 2nd shaping | molding die 3 is slid and the 1st resin material 23 and a strip | belt shape are formed. Since the insert molding is performed with the piece 25 facing each other, the molding die of the first resin material 23, the strip-like piece 25 and the insert molding 31 can be used in the same molding die 5 and the equipment cost is further reduced. can do. In addition, since it is not necessary to remove the molded first resin material 23 and the strip-shaped piece 25 from the first molding die 1 and the second molding die 3 one by one, the molding cycle can be further shortened.
[0040]
In the above embodiment, the connecting portion 17a of the wiring body 7 is cut by the clamping pressure by the clamping of the molding die 5. However, the connecting portion 17a is not cut yet at the clamping stage, and thereafter When the non-conductive resin is injected, the cutting protrusion 25a of the strip 25 is pressed against the connecting portion 17a of the wiring body 7 with the injection pressure to cut the connecting portion 17a, and the four conductors 17 are separated from each other. It may be made independent.
[0041]
Moreover, in said embodiment, the 1st resin material 23 and the strip | belt-shaped piece 25 are shape | molded simultaneously with the one shaping | molding die 5 which formed the 1st cavity 9 and the 2nd cavity 11 in the 1st shaping | molding die 1, Then, The second molding die 3 is slid upward so that the first resin material 23 and the strip-shaped piece 25 are combined to form the insert molded body 31. However, as another method, the first resin is previously formed. The material 23 and the strip 25 are formed in different molds, respectively, and set in the first mold 1 and the second mold 3 of the mold 5 to form the insert molded body 31. Also good. At this time, the cutting of the connecting portion 17a of the wiring body 7 may be performed by the clamping pressure by clamping the molding die 5 as in the above embodiment, and the subsequent injection when injecting the non-conductive resin. You may carry out by pressure.
[0042]
Further, the insert molded body 31 is not limited to an electronic component as in the conventional example, but may be, for example, an instrument panel or a door trim as an interior part of an automobile equipped with wiring. You may make it insert-mold a wiring in the base material which comprises a main body, or attach to the base material which comprises a panel main body by insert-molding separately insert-molded.
[0043]
【The invention's effect】
As described above, according to the present invention, the wiring body is set on the first resin material in the molding die, and the belt-like piece is made to face the connecting portion that connects the plurality of conductors of the wiring body, thereby clamping the mold. The cutting protrusion of the strip-like piece is pressed against the connecting portion of the wiring body with pressure to cut the connecting portion to make the plurality of conductors independent of each other, and then supply a non-conductive resin to the cavity to supply the second resin Insert molding in which a material is molded integrally with a first resin material, and a plurality of independent conductive wires are inserted in a state of being arranged at predetermined intervals on an insulating resin material composed of a first resin material and a second resin material A body is obtained, or the cutting timing of the connecting portion is set at the time of injection of the non-conductive resin, and the injection pressure is used. Therefore, a plurality of conductors can be individually made independent in a series of molding flows, and the insert molding body eliminates the cutting process, the trouble of arranging a plurality of conductors one by one, and two molding processes. Can be formed easily and in a short time. Moreover, since a cutting device other than the mold and two types of molds are not required, the equipment cost can be reduced accordingly.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view taken along the line II of FIG.
2 is a cross-sectional view taken along line II-II in FIG.
FIG. 3 is a plan view of an insert molded body.
4A and 4B show a wiring body, in which FIG. 4A is a plan view and FIG. 4B is a cross-sectional view taken along line IV-IV in FIG.
5 is a molding process diagram showing a mold opening state of the mold before molding the first resin material and the strip-like piece, and is a cross-sectional view of the mold corresponding to the II line in FIG. 3;
6A and 6B are molding process diagrams showing a molding state of the first resin material and the strip-shaped piece, in which FIG. 6A is a cross-sectional view of a molding die corresponding to the line II in FIG. 3, and FIG. It is sectional drawing equivalent to the -II line.
7 is a molding process diagram showing the mold opening state of the molding die after molding the first resin material and the strip-like piece, and is a cross-sectional view of the molding die corresponding to the II line in FIG. 3;
8 is a molding process diagram showing a state in which the wiring body is set on the first resin material and the second molding die is slid to allow the strip-shaped piece to face the first resin material. FIG. It is sectional drawing of the shaping | molding die corresponded to.
FIG. 9 is a forming process diagram showing a state in which the forming die is clamped and the connecting portion of the wiring body is cut, and is a cross-sectional view of the forming die corresponding to the line II in FIG. 3;
10 is an enlarged view of part A in FIG. 9;
11 is a molding process diagram showing a molding state of the insert molded body, and is a cross-sectional view of a molding die corresponding to the line II in FIG. 3; FIG.
12 is an enlarged view of part B in FIG. 11;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st shaping | molding die 3 2nd shaping | molding die 5 Molding die 7 Wiring body 9 1st cavity 11 2nd cavity 17 Conductor 17a Connection part 23 1st resin material 23a Recess 25 Band-like piece 25a Cutting protrusion 27 Second resin material 29 Insulation Resin material 31 Insert molding

Claims

An insert molding method in which a plurality of conductive wires are insert-molded with a non-conductive resin in a state where they are arranged at a predetermined interval,
A mold composed of a first mold and a second mold;
A wiring body in which a plurality of conductive wires are arranged at predetermined intervals and adjacent conductive wires are integrally connected by a connecting portion;
A first resin material made of a non-conductive resin provided with a recess corresponding to the connecting portion of the wiring body;
Prepare a strip of non-conductive resin provided with a cutting projection corresponding to the connecting portion of the wiring body,
With the mold open, the first resin material is set in the first mold so that the concave portion faces the cavity, and the wiring body is connected to the first resin material and the connecting portion is in the concave portion. On the other hand, the band-shaped piece is set on the second mold so that the cutting projection faces the cavity and corresponds to the concave portion of the first resin material,
Next, the mold is clamped and the cutting protrusion of the strip is pressed against the connecting portion of the wiring body with the clamping pressure, so that the connecting portion is cut and the plurality of conductors are made independent independently. ,
Thereafter, an insulating resin material is constituted by the first resin material and the second resin material by supplying a non-conductive resin to the cavity of the mold and molding the second resin material integrally with the first resin material. And the insert molding method characterized by obtaining the insert molded object inserted in the state in which the several independent conducting wire was arranged in the said insulating resin material at predetermined intervals.

An insert molding method in which a plurality of conductive wires are insert-molded with a non-conductive resin in a state where they are arranged at a predetermined interval,
A mold composed of a first mold and a second mold;
A wiring body in which a plurality of conductive wires are arranged at predetermined intervals and adjacent conductive wires are integrally connected by a connecting portion;
A first resin material made of a non-conductive resin provided with a recess corresponding to the connecting portion of the wiring body;
Prepare a strip of non-conductive resin provided with a cutting projection corresponding to the connecting portion of the wiring body,
With the mold open, the first resin material is set in the first mold so that the concave portion faces the cavity, and the wiring body is connected to the first resin material and the connecting portion is in the concave portion. On the other hand, the band-shaped piece is set on the second mold so that the cutting projection faces the cavity and corresponds to the concave portion of the first resin material,
Next, the mold is clamped to inject non-conductive resin into the cavity, and the cutting protrusion of the strip is pressed against the connecting portion of the wiring body with the injection pressure, thereby cutting the connecting portion and A plurality of conductive wires are made independent of each other, and by forming the second resin material integrally with the first resin material, the first resin material and the second resin material constitute an insulating resin material, An insert molding method characterized in that an insert molded body is obtained in which independent conductors are inserted in a state of being arranged at a predetermined interval on the insulating resin material.

An insert molding method in which a plurality of conductive wires are insert-molded with a non-conductive resin in a state where they are arranged at a predetermined interval,
A mold comprising a first mold and a second mold, the mold having a first cavity for molding the first resin material and a second cavity for molding the strip;
Preparing a wiring body in which a plurality of conductive wires are arranged at predetermined intervals and adjacent conductive wires are integrally connected by a connecting portion;
A first resin material made of a non-conductive resin provided with a recess corresponding to a connecting portion of the wiring body by supplying a non-conductive resin to the first and second cavities in a clamped state of the mold; Each of the strips made of non-conductive resin provided with cutting protrusions corresponding to the connecting portions of the wiring bodies is formed,
Next, after the mold is opened with the first resin material attached to the first mold and the strips attached to the second mold, the wiring body is connected to the first resin material. Set so that the part corresponds to the recess,
Thereafter, either the first molding die or the second molding die is slid to face the first resin material and the strip-shaped piece, and then the molding die is clamped and the strip-shaped with the clamping pressure. By pressing the cutting protrusions of the piece against the connecting part of the wiring body, the connecting part is cut and the plurality of conducting wires are individually made independent,
After that, by supplying a non-conductive resin to the first cavity of the mold and molding the second resin material integrally with the first resin material, an insulating resin is formed between the first resin material and the second resin material. An insert molding method comprising: forming a material, and obtaining an insert molded body in which a plurality of independent conductors are inserted in a state of being arranged on the insulating resin material at a predetermined interval.

An insert molding method in which a plurality of conductive wires are insert-molded with a non-conductive resin in a state where they are arranged at a predetermined interval,
A mold comprising a first mold and a second mold, the mold having a first cavity for molding the first resin material and a second cavity for molding the strip;
Preparing a wiring body in which a plurality of conductive wires are arranged at predetermined intervals and adjacent conductive wires are integrally connected by a connecting portion;
A first resin material made of a non-conductive resin provided with a recess corresponding to a connecting portion of the wiring body by supplying a non-conductive resin to the first and second cavities in a clamped state of the mold; Each of the strips made of non-conductive resin provided with cutting protrusions corresponding to the connecting portions of the wiring bodies is formed,
Next, after the mold is opened with the first resin material attached to the first mold and the strips attached to the second mold, the wiring body is connected to the first resin material. Set so that the part corresponds to the recess,
Thereafter, either one of the first mold and the second mold is slid to face the first resin material and the strip, and then the mold is clamped to make the first cavity non-conductive. Resin is injected, and the cutting pressure of the strip piece is pressed against the connecting portion of the wiring body with the injection pressure, thereby cutting the connecting portion and individually making the plurality of conductors independent of the second resin material. By integrally molding the first resin material, the first resin material and the second resin material constitute an insulating resin material, and a plurality of independent conductors are arranged on the insulating resin material at predetermined intervals. An insert molding method characterized in that an insert molded body inserted in a state is obtained.