JP2008011646A - Resin sealing method for laminated iron core of rotor - Google Patents

Resin sealing method for laminated iron core of rotor Download PDF

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JP2008011646A
JP2008011646A JP2006179931A JP2006179931A JP2008011646A JP 2008011646 A JP2008011646 A JP 2008011646A JP 2006179931 A JP2006179931 A JP 2006179931A JP 2006179931 A JP2006179931 A JP 2006179931A JP 2008011646 A JP2008011646 A JP 2008011646A
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resin
gap
resin member
iron core
sealing method
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JP4611249B2 (en
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Kenji Ishimatsu
憲治 石松
Kiyohisa Maki
清久 牧
Akira Nagai
亮 長井
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Mitsui High Tec Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a resin sealing method for a laminated iron core of a rotor for inhibiting and preventing a resin member from generating an incomplete filling portion in magnet inserted sections, and economically manufacturing a high-quality product at high productivity. <P>SOLUTION: The resin sealing method for the laminated iron core of the rotor has a step of laminating a plurality of iron core pieces 10, and inserting permanent magnets 13 into a plurality of the magnet insertions 12 formed around a central axial hole 11. Then, the resin member 18 is fixed and injected from a resin reservoir 16 provided in one of upper mold 14 and a lower mold 15 into gaps 17 formed within the magnet insertions 12, in a state that the upper mold 14 and lower mold 15 are combined after the permanent magnets 13 are inserted. Flow rate/pressure adjusting members 25 vertically and movably provided in one or both of the upper mold 14 and the lower mold 15 are inserted into the gaps 17 at one point of time, (1) before the resin member 18 is injected, (2) while the resin member 18 is injected, and (3) after the resin member 18 is injected. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、軸孔の周囲に複数設けられた磁石挿入部に永久磁石を挿入し、これを樹脂部材によって固定する回転子積層鉄心の樹脂封止方法に関する。 The present invention relates to a resin sealing method for a rotor laminated core in which a permanent magnet is inserted into a plurality of magnet insertion portions provided around a shaft hole and fixed by a resin member.

従来、モータに使用する回転子積層鉄心(ロータコアともいう)は、複数の鉄心片を積層し、中央のシャフト孔(軸孔ともいう)の周囲に形成された複数のマグネット孔(磁石挿入部ともいう)に永久磁石を挿入した後、金型に設けられた樹脂溜めポット(樹脂溜め部ともいう)から、マグネット孔に樹脂部材を充填し固定することにより製造している(例えば、特許文献1参照)。詳細には、マグネット孔に永久磁石を挿入した際、マグネット孔内には隙間(即ち、永久磁石表面とマグネット孔内面との間に生じる隙間)が形成されるため、この隙間に樹脂部材を充填し固化させることで、各マグネット孔に永久磁石を確実に固定できる。 Conventionally, a rotor laminated core (also referred to as a rotor core) used in a motor is formed by laminating a plurality of core pieces and a plurality of magnet holes (also referred to as magnet insertion portions) formed around a central shaft hole (also referred to as a shaft hole). After a permanent magnet is inserted into the magnet hole, the magnet hole is filled with a resin member and fixed from a resin reservoir pot (also referred to as a resin reservoir portion) provided in the mold (for example, Patent Document 1). reference). Specifically, when a permanent magnet is inserted into the magnet hole, a gap (that is, a gap generated between the surface of the permanent magnet and the inner surface of the magnet hole) is formed in the magnet hole. By solidifying, permanent magnets can be reliably fixed in each magnet hole.

特開2002−34187号公報JP 2002-34187 A

しかしながら、永久磁石の挿入後にマグネット孔内に形成される隙間の寸法は、永久磁石の周囲の各方向(前後左右)で異なっているため、樹脂部材を隙間へ注入して永久磁石の周囲に回り込ませる際、樹脂部材が隙間寸法の大きい部分から先に侵入し、次第に硬化し始める。このため、例えば、隙間寸法の小さい箇所、又はマグネット孔の隅部においては、樹脂部材が十分に行き渡らず、未充填となって空隙が形成され易くなる。
このような空隙は、製造したロータコアを製品として使用する際に、ロータコアの高速回転によって永久磁石が受ける遠心力により、樹脂部材に割れを生じさせるきっかけとなり易く、永久磁石の固定が不安定になる恐れがある。また、このような問題が、結果的に、ロータコアの製品品質の低下、及びこれに伴う信頼性の低下を招く要因となっていた。
However, since the size of the gap formed in the magnet hole after insertion of the permanent magnet is different in each direction around the permanent magnet (front and rear, left and right), the resin member is poured into the gap and wraps around the permanent magnet. When the resin member is made to enter, the resin member first enters from a portion having a large gap size and gradually begins to harden. For this reason, for example, the resin member does not spread sufficiently in a portion having a small gap size or a corner portion of the magnet hole, and the gap is easily formed because the resin member is not filled.
Such a gap is likely to cause a crack in the resin member due to the centrifugal force that the permanent magnet receives due to the high-speed rotation of the rotor core when the manufactured rotor core is used as a product, and the fixation of the permanent magnet becomes unstable. There is a fear. Further, such a problem results in a decrease in product quality of the rotor core and a concomitant decrease in reliability.

また、現状では、このような樹脂部材の未充填部分の発生を防ぐ目的から、樹脂溜めポット内の樹脂部材をマグネット孔へプランジャで押し出す際に、樹脂部材を完全に押し出すことなく、鉄心片表面に所定高さの樹脂部材が残るように、樹脂部材の注入圧力を保持するようにしている。このため、積層鉄心を構成する鉄心片表面には、樹脂溜めポット内、及び樹脂溜めポットとマグネット孔とを連通するランナー内に、モールド後に固化した不要な樹脂部材が残存することを回避できなかった。
しかし、このような樹脂部材の残りは、後のロータコアの組立てにおいて障害となるため、鉄心片の表面から除去する必要があり、そのための工程及び専用装置を準備しなければならず、ロータコアの製造時間の短縮、製造コストの低減を妨げている。また、このように、不要な樹脂部材を発生させることは、材料の無駄遣いであり、環境資源の観点からも好ましくない。
In addition, at present, for the purpose of preventing the occurrence of such an unfilled portion of the resin member, when the resin member in the resin reservoir pot is pushed out to the magnet hole with the plunger, the resin member is not completely pushed out, and the surface of the iron core piece The injection pressure of the resin member is maintained so that the resin member having a predetermined height remains on the surface. For this reason, it cannot be avoided that unnecessary resin members solidified after molding remain in the resin reservoir pot and in the runner connecting the resin reservoir pot and the magnet hole on the surface of the iron core piece constituting the laminated iron core. It was.
However, since the remainder of such a resin member becomes an obstacle in the assembly of the rotor core later, it is necessary to remove it from the surface of the iron core piece, and a process and a dedicated device for that purpose must be prepared, and the rotor core is manufactured. This hinders shortening of time and manufacturing cost. In addition, generating unnecessary resin members in this way is a waste of materials and is not preferable from the viewpoint of environmental resources.

本発明はかかる事情に鑑みてなされたもので、磁石挿入部における樹脂部材の未充填部分の発生を抑制、更には防止して、品質が良好な製品を経済的に生産性よく製造可能な回転子積層鉄心の樹脂封止方法を提供することを目的とする。 The present invention has been made in view of such circumstances, and it is possible to suppress and further prevent the occurrence of an unfilled portion of the resin member in the magnet insertion portion, and to rotate a product capable of producing a good quality product economically with high productivity. It aims at providing the resin sealing method of a child lamination iron core.

前記目的に沿う本発明に係る回転子積層鉄心の樹脂封止方法は、複数の鉄心片を積層し、中央の軸孔の周囲に形成された複数の磁石挿入部にそれぞれ永久磁石を挿入した後、上型と下型で挟んだ状態で、該上型及び該下型のいずれか1の金型に設けられた樹脂溜め部から、前記永久磁石の挿入後に前記各磁石挿入部内に形成された隙間に、樹脂部材を充填して固定する回転子積層鉄心の樹脂封止方法において、
前記隙間に、(1)前記樹脂部材を注入する前、(2)前記樹脂部材を注入すると同時、及び(3)前記樹脂部材を注入した後のいずれか1の時期に、前記上型及び前記下型のいずれか一方又は双方に上下動可能に設けられた流量圧調整部材を挿入する。
The method for resin sealing of a rotor laminated core according to the present invention in accordance with the above object is to laminate a plurality of iron core pieces and insert permanent magnets into a plurality of magnet insertion portions formed around a central shaft hole, respectively. From the resin reservoir provided in one of the upper mold and the lower mold in a state sandwiched between the upper mold and the lower mold, the permanent magnet is formed in each magnet insertion section after the permanent magnet is inserted. In the resin sealing method of the rotor laminated core that fills and fixes the resin member in the gap,
In the gap, (1) before injecting the resin member, (2) at the same time as injecting the resin member, and (3) at any one time after injecting the resin member, A flow pressure adjusting member provided to be movable up and down is inserted into one or both of the lower molds.

本発明に係る回転子積層鉄心の樹脂封止方法において、前記流量圧調整部材を挿入する前記時期は、前記隙間に、(1)前記樹脂部材を注入する前、又は(2)前記樹脂部材を注入すると同時であって、前記隙間への前記樹脂部材の注入が完了するまで、該隙間へ前記流量圧調整部材の一部又は全部が挿入された状態を保持することが好ましい。
本発明に係る回転子積層鉄心の樹脂封止方法において、前記隙間に注入された前記樹脂部材へ前記流量圧調整部材が与える押圧圧力を、前記隙間内を移動する前記樹脂部材の流動圧力よりも大きく、しかも前記樹脂溜め部から前記隙間へ注入する前記樹脂部材の注入圧力よりも小さく設定することが好ましい。
本発明に係る回転子積層鉄心の樹脂封止方法において、前記隙間に注入する前記樹脂部材の注入量に応じて、前記流量圧調整部材を前記隙間から抜き出していくことが好ましい。
In the resin sealing method for a rotor laminated core according to the present invention, the time for inserting the flow rate pressure adjusting member is (1) before injecting the resin member into the gap, or (2) the resin member is inserted. It is preferable that the state in which a part or all of the flow rate pressure adjusting member is inserted into the gap is maintained at the same time as the injection until the injection of the resin member into the gap is completed.
In the resin sealing method for a rotor laminated iron core according to the present invention, the pressure applied by the flow pressure adjusting member to the resin member injected into the gap is more than the flow pressure of the resin member moving in the gap. It is preferable to set the pressure larger than the injection pressure of the resin member injected from the resin reservoir into the gap.
In the resin sealing method for a rotor laminated core according to the present invention, it is preferable that the flow rate pressure adjusting member is extracted from the gap according to the injection amount of the resin member injected into the gap.

本発明に係る回転子積層鉄心の樹脂封止方法において、前記隙間への前記樹脂部材の注入が完了した後で、しかも該樹脂部材が硬化する前に、前記流量圧調整部材を前記隙間から完全に抜き出すことが好ましい。
本発明に係る回転子積層鉄心の樹脂封止方法において、前記隙間に注入した前記樹脂部材を硬化させた後に、前記流量圧調整部材の一部又は全部を前記隙間から抜き出すことが好ましい。
In the resin sealing method for a rotor laminated core according to the present invention, after the injection of the resin member into the gap is completed, and before the resin member is cured, the flow pressure adjusting member is completely removed from the gap. It is preferable to extract the
In the resin sealing method for a rotor laminated core according to the present invention, it is preferable that a part or all of the flow pressure adjusting member is extracted from the gap after the resin member injected into the gap is cured.

本発明に係る回転子積層鉄心の樹脂封止方法において、前記流量圧調整部材を、一つの前記磁石挿入部に形成された前記隙間に1又は複数挿入することが好ましい。
本発明に係る回転子積層鉄心の樹脂封止方法において、前記樹脂溜め部を前記磁石挿入部と平面視して重なる位置に配置した後、前記樹脂溜め部内に設けられたプランジャを、前記金型に当接している前記鉄心片表面に当接する位置まで可動させて、前記樹脂溜め部の前記樹脂部材を前記隙間に押し出すことが好ましい。
In the resin sealing method for a rotor laminated core according to the present invention, it is preferable that one or a plurality of the flow pressure adjusting members are inserted into the gap formed in one magnet insertion portion.
In the resin sealing method for a rotor laminated core according to the present invention, after the resin reservoir portion is disposed at a position overlapping the magnet insertion portion in plan view, the plunger provided in the resin reservoir portion is replaced with the mold. It is preferable that the resin member of the resin reservoir is pushed out into the gap by moving to a position where it contacts the surface of the iron core piece that is in contact with the core.

請求項1〜8記載の回転子積層鉄心の樹脂封止方法は、永久磁石の挿入後に磁石挿入部内に形成される隙間に、(1)樹脂部材を注入する前、又は(2)樹脂部材を注入すると同時に、流量圧調整部材を挿入する場合、この部分における樹脂部材への抵抗を増加させ、その流圧を低下させることができる。これは、形成される隙間のうち、特に寸法の大きい箇所(樹脂部材が入り込み易く流入圧力が高い箇所)に流量圧調整部材を挿入する場合に有効である。これにより、隙間の寸法が小さい箇所へ樹脂部材を回り込み易くできるので、樹脂部材を隙間の隅々まで行き渡らせることができ、隙間内での空隙の発生を抑制、更には防止できる。
また、隙間に、(3)樹脂部材を注入した後に流量圧調整部材を挿入する場合、隙間内の樹脂部材に押圧圧力を付与できる。これにより、例え隙間内に樹脂部材の未充填部分が発生していたとしても、流量圧調整部材によって押圧された樹脂部材を、未充填部分に侵入させることができる。
従って、磁石挿入部における樹脂部材の未充填部分の発生を抑制、更には防止して、品質が良好な回転子積層鉄心を経済的に生産性よく製造できる。
The resin sealing method for a rotor laminated core according to any one of claims 1 to 8, wherein (1) the resin member is injected into the gap formed in the magnet insertion portion after the permanent magnet is inserted, or (2) the resin member is When the flow pressure adjusting member is inserted at the same time as the injection, the resistance to the resin member in this portion can be increased and the fluid pressure can be lowered. This is effective when the flow rate pressure adjusting member is inserted into a portion having a particularly large dimension (a portion where the resin member easily enters and the inflow pressure is high) in the formed gap. Thereby, since the resin member can be easily passed to the portion where the size of the gap is small, the resin member can be spread to every corner of the gap, and the generation of the void in the gap can be suppressed and further prevented.
Further, when the flow pressure adjusting member is inserted into the gap after (3) the resin member is injected, a pressing pressure can be applied to the resin member in the gap. Thereby, even if an unfilled portion of the resin member is generated in the gap, the resin member pressed by the flow rate pressure adjusting member can be allowed to enter the unfilled portion.
Therefore, generation of an unfilled portion of the resin member in the magnet insertion portion can be suppressed and further prevented, and a rotor laminated iron core with good quality can be manufactured economically with high productivity.

特に、請求項2記載の回転子積層鉄心の樹脂封止方法は、磁石挿入部への樹脂部材の注入が完了するまで、隙間へ流量圧調整部材の一部又は全部が挿入された状態を保持するので、樹脂部材を隙間の隅々まで確実に行き渡らせることができる。
請求項3記載の回転子積層鉄心の樹脂封止方法は、隙間に注入された樹脂部材へ流量圧調整部材が与える押圧圧力を設定するので、樹脂部材を隙間の隅々まで確実に行き渡らせることができると共に、樹脂溜め部から隙間への樹脂部材の注入量の増加に伴って、隙間から流量圧調整部材を徐々に抜き出していくことができる。これにより、例えば、加熱により液状化する前の樹脂部材を構成するタブレット形状のばらつきで、隙間の容積に対する樹脂部材の注入量が、規定量より若干少ないような場合であっても、流量圧調整部材は、不足分の樹脂部材量を補う役目を果たすことができるので、隙間内に流量圧調整部材の一部を残留させて、樹脂部材を隙間の隅々に渡って確実に行き渡らせることができる。
従って、不要な樹脂残りを発生させることなく、適量の樹脂部材で永久磁石を磁石挿入部に固定することができるので、従来のように、樹脂部材の無駄が生じることもなく、また、樹脂部材量の不足による未充填の空隙が発生することもない。
In particular, the resin sealing method of the rotor laminated core according to claim 2 maintains a state in which a part or all of the flow pressure adjusting member is inserted into the gap until the injection of the resin member into the magnet insertion portion is completed. Therefore, the resin member can be surely spread to every corner of the gap.
Since the resin sealing method of the rotor laminated iron core according to claim 3 sets the pressing pressure applied by the flow pressure adjusting member to the resin member injected into the gap, the resin member is surely spread to every corner of the gap. In addition, the flow rate pressure adjusting member can be gradually extracted from the gap as the injection amount of the resin member from the resin reservoir to the gap increases. Thereby, for example, even if the injection amount of the resin member with respect to the gap volume is slightly less than the prescribed amount due to variations in the tablet shape constituting the resin member before liquefaction by heating, the flow pressure adjustment Since the member can play a role of supplementing the insufficient amount of the resin member, a part of the flow pressure adjusting member remains in the gap, and the resin member can be surely spread over every corner of the gap. it can.
Therefore, the permanent magnet can be fixed to the magnet insertion portion with an appropriate amount of resin member without generating unnecessary resin residue, so that the resin member is not wasted as in the prior art, and the resin member There is no occurrence of unfilled voids due to insufficient amount.

請求項4記載の回転子積層鉄心の樹脂封止方法は、隙間に注入する樹脂部材の注入量に応じて、流量圧調整部材が隙間から抜き出されていくので、流量圧調整部材が不足分の樹脂部材量を補う役目を果たすことができ、樹脂部材を隙間の隅々に渡って確実に行き渡らせることができる。
請求項5記載の回転子積層鉄心の樹脂封止方法は、隙間への樹脂部材の注入が完了した後で、しかもこの樹脂部材が硬化する前に、流量圧調整部材を隙間から抜き出すので、樹脂部材が固化するまでその状態を維持する必要がなく、磁石挿入孔への樹脂部材の充填作業を効率的に実施できる。
請求項6記載の回転子積層鉄心の樹脂封止方法は、磁石挿入部に注入した樹脂部材を硬化させた後に、流量圧調整部材の一部又は全部を隙間から抜き出すので、例えば、流量圧調整部材の抜き出し時における樹脂部材の空気の巻き込みの恐れがなく、安定した品質を備える製品を製造できる。
The resin sealing method of the rotor laminated iron core according to claim 4 is such that the flow pressure adjusting member is extracted from the gap according to the injection amount of the resin member to be injected into the gap. The resin member amount can be compensated for, and the resin member can be reliably spread over the corners of the gap.
The resin sealing method of the rotor laminated core according to claim 5, wherein the flow rate pressure adjusting member is extracted from the gap after the resin member has been injected into the gap and before the resin member is cured. It is not necessary to maintain the state until the member is solidified, and the resin member filling operation into the magnet insertion hole can be performed efficiently.
In the resin sealing method of the rotor laminated core according to claim 6, after the resin member injected into the magnet insertion portion is cured, a part or all of the flow pressure adjusting member is extracted from the gap. There is no fear of entrainment of air in the resin member when the member is extracted, and a product with stable quality can be manufactured.

請求項7記載の回転子積層鉄心の樹脂封止方法は、流量圧調整部材を一つの磁石挿入部に形成された隙間に1又は複数挿入するので、例えば、流量圧調整部材の挿入本数又は挿入場所を、磁石挿入部内の隙間の大きさ、位置、又は形状に応じて、適宜選択することにより、樹脂部材を隙間の隅々まで確実に行き渡らせることができる。
請求項8記載の回転子積層鉄心の樹脂封止方法は、樹脂溜め部を磁石挿入部と平面視して重なる位置に配置した後、樹脂部材を押し出すプランジャを、鉄心片表面に当接する位置まで可動させるので、鉄心片表面に不要な樹脂部材を残存させることなく、適量の樹脂部材量で各磁石挿入部に永久磁石を固定できる。これにより、樹脂部材の注入に際し、樹脂流路及びゲートが設けられた金型を使用する必要がないので、コア表面に不要な樹脂残りが発生することがなく、従来必要としていた樹脂残りの除去工程そのものが必要なくなり、例えば、ロータコアの製造時間、及び製造コストの大幅な削減を図ることができる。
In the method for sealing a rotor laminated core according to claim 7, one or a plurality of flow pressure adjusting members are inserted into a gap formed in one magnet insertion portion. For example, the number or insertion of flow pressure adjusting members is inserted. By appropriately selecting the location according to the size, position, or shape of the gap in the magnet insertion portion, the resin member can be reliably distributed to every corner of the gap.
In the resin sealing method of the rotor laminated core according to claim 8, after the resin reservoir portion is arranged at a position overlapping the magnet insertion portion in plan view, the plunger for pushing out the resin member is moved to a position where the plunger comes into contact with the surface of the core piece. Since it is movable, a permanent magnet can be fixed to each magnet insertion portion with an appropriate amount of the resin member without leaving an unnecessary resin member on the surface of the iron core piece. As a result, there is no need to use a mold provided with a resin flow path and a gate when injecting a resin member, so that unnecessary resin residue does not occur on the core surface, and removal of the resin residue that has been conventionally required The process itself becomes unnecessary, and for example, the manufacturing time and manufacturing cost of the rotor core can be greatly reduced.

続いて、添付した図面を参照しつつ、本発明を具体化した実施の形態につき説明し、本発明の理解に供する。
図1〜図3に示すように、本発明の一実施の形態に係る回転子積層鉄心の樹脂封止方法は、複数の鉄心片10を積層し、中央の軸孔11の周囲に形成された複数の磁石挿入孔(磁石挿入部の一例)12にそれぞれ永久磁石13を挿入した後、上型(即ち、金型)14と下型15で挟んだ状態で、上型14に設けられた樹脂溜めポット(樹脂溜め部の一例)16から、永久磁石13の挿入後に各磁石挿入孔12内に形成された隙間17に、樹脂部材18を充填し固定して、回転子積層鉄心(以下、単に積層鉄心ともいう)19を製造する方法である。以下、詳しく説明する。
Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIGS. 1 to 3, the resin sealing method for a rotor laminated core according to an embodiment of the present invention is formed by laminating a plurality of core pieces 10 and around a central shaft hole 11. After the permanent magnet 13 is inserted into each of a plurality of magnet insertion holes (an example of a magnet insertion portion) 12, the resin provided in the upper mold 14 in a state of being sandwiched between the upper mold (that is, the mold) 14 and the lower mold 15 A resin member 18 is filled and fixed from a reservoir pot (an example of a resin reservoir) 16 into a gap 17 formed in each magnet insertion hole 12 after the permanent magnet 13 is inserted. (Also referred to as a laminated iron core) 19. This will be described in detail below.

積層鉄心19は、厚みが、例えば、0.5mm以下程度の電磁鋼板を環状に打抜き、この打ち抜かれた複数の鉄心片10を順次積層して構成されるものである。なお、複数の鉄心片10の積層方法としては、かしめ、溶接、及び接着のいずれか1又は2以上を組み合わせて使用できるが、単に平積みするだけでもよい。
この積層鉄心10の中央に形成された軸孔11の周囲には、上下方向に貫通した磁石挿入孔12が等間隔に複数形成され、各磁石挿入孔12内に永久磁石13を挿入した後、この積層鉄心19を樹脂封止装置20にセットし、液状の樹脂部材18を供給して硬化させる。なお、樹脂部材としては、例えば、従来半導体装置の製造に使用しているエポキシ樹脂のような熱硬化性樹脂又は熱可塑性樹脂を使用できる。
ここで、使用する樹脂封止装置20について説明する。
The laminated iron core 19 is formed by punching an electromagnetic steel sheet having a thickness of, for example, about 0.5 mm or less in an annular shape and sequentially laminating a plurality of punched iron core pieces 10. In addition, as a lamination | stacking method of the some iron core piece 10, although it can use combining any one or 2 or more of caulking, welding, and adhesion | attachment, you may just pile up.
A plurality of magnet insertion holes 12 penetrating in the vertical direction are formed at equal intervals around the shaft hole 11 formed in the center of the laminated core 10, and after inserting the permanent magnet 13 into each magnet insertion hole 12, The laminated iron core 19 is set in the resin sealing device 20, and the liquid resin member 18 is supplied and cured. As the resin member, for example, a thermosetting resin or a thermoplastic resin such as an epoxy resin conventionally used for manufacturing a semiconductor device can be used.
Here, the resin sealing device 20 to be used will be described.

図1、図2に示すように、樹脂封止装置20は、積層鉄心19の上方に配置される上型14と、下方に配置される下型15を有しており、この間に配置した積層鉄心19を上型14と下型15で押圧するものである。なお、上型14には、樹脂部材18の原料(ペレット状)を加熱して液状にする樹脂溜めポット16が、積層鉄心19に当接する上型14の端部まで延在した状態で設けられている。この上型14には、更に、樹脂溜めポット16と磁石挿入孔12とを連通する樹脂流路21が設けられている。
この樹脂封止装置20の樹脂溜めポット16内には、上下方向に昇降可能なプランジャ22がOリング(シール部材の一例)23を介して設けられている。このプランジャ22により、樹脂溜めポット16から押し出された液状の樹脂部材18が、樹脂溜めポット16の下流側端部に設けられた樹脂流路21、即ち上型14の下部表面と積層鉄心19の上部表面との間を通り、磁石挿入孔12に充填される。
As shown in FIGS. 1 and 2, the resin sealing device 20 has an upper mold 14 disposed above the laminated iron core 19 and a lower mold 15 disposed below, and the laminated layer disposed therebetween. The iron core 19 is pressed by the upper mold 14 and the lower mold 15. The upper mold 14 is provided with a resin reservoir pot 16 that heats the raw material (pellet shape) of the resin member 18 to be liquid and extends to the end of the upper mold 14 that contacts the laminated core 19. ing. The upper mold 14 is further provided with a resin flow path 21 that allows the resin reservoir pot 16 and the magnet insertion hole 12 to communicate with each other.
In the resin reservoir pot 16 of the resin sealing device 20, a plunger 22 that can be moved up and down is provided via an O-ring (an example of a seal member) 23. By this plunger 22, the liquid resin member 18 pushed out from the resin reservoir pot 16 causes the resin flow path 21 provided at the downstream end of the resin reservoir pot 16, that is, the lower surface of the upper mold 14 and the laminated iron core 19. It passes between the upper surfaces and fills the magnet insertion hole 12.

また、上型14には、昇降手段24により上下動可能となった流量圧調整部材25が、Oリング(シール部材の一例)26を介して設けられている。この流量圧調整部材25は、常時は上型14内に収納され、使用にあっては上型14の下面より下方へ突出し、隙間17内に注入される樹脂部材18の流入圧力を調整するものであり、更には、隙間17の容積を調整する容積調整部材としても機能するものである。
流量圧調整部材25は、一つの磁石挿入孔12に形成された隙間17に複数本(ここでは2本)挿入されるが、例えば、隙間の大きさ又は形状に応じて、1本でもよい。なお、この流量圧調整部材25の挿入箇所は、形成された隙間17のうち、その寸法が大きい箇所、即ち永久磁石13の両側となっているが、片側のみでもよい。
The upper mold 14 is provided with a flow pressure adjusting member 25 that can be moved up and down by the lifting means 24 via an O-ring (an example of a seal member) 26. This flow pressure adjusting member 25 is normally housed in the upper die 14 and protrudes downward from the lower surface of the upper die 14 to adjust the inflow pressure of the resin member 18 injected into the gap 17 in use. Furthermore, it also functions as a volume adjusting member that adjusts the volume of the gap 17.
A plurality (two in this case) of the flow pressure adjusting members 25 are inserted into the gap 17 formed in one magnet insertion hole 12, but may be one, for example, depending on the size or shape of the gap. In addition, although the insertion location of this flow pressure adjustment member 25 is a location where the dimension is large, that is, both sides of the permanent magnet 13 in the formed gap 17, it may be only one side.

この流量圧調整部材25は、金属製又は樹脂製で棒状となって断面円形となっているが、例えば、隙間の大きさ又は形状に応じて、断面矩形(正方形又は長方形)、断面楕円形、又は断面多角形にしてもよい。この流量圧調整部材25の表面には、樹脂部材18からの剥離性を高めるため、例えば、フッ素樹脂又はシリコーンのようなコーティング材が被覆されている。
なお、流量圧調整部材25の断面積は、形成される隙間17の平断面積の例えば、20%以上80%以下(好ましくは、下限を30%、上限を50%)程度とすることが好ましい。
この2本の流量圧調整部材25を同時に上下動させる昇降手段24としては、例えば、油圧シリンダ、空圧シリンダ、又は弾性部材であるばね材を使用できる。
The flow pressure adjusting member 25 is made of metal or resin and has a rod shape and a circular cross section. For example, depending on the size or shape of the gap, the cross sectional rectangle (square or rectangular), the elliptical cross section, Or you may make it a cross-sectional polygon. The surface of the flow pressure adjusting member 25 is coated with a coating material such as, for example, a fluororesin or silicone in order to improve the peelability from the resin member 18.
In addition, it is preferable that the cross-sectional area of the flow pressure adjusting member 25 is, for example, about 20% to 80% (preferably the lower limit is 30% and the upper limit is 50%) of the flat cross-sectional area of the gap 17 to be formed. .
For example, a hydraulic cylinder, a pneumatic cylinder, or a spring material that is an elastic member can be used as the lifting / lowering means 24 that moves the two flow pressure adjusting members 25 up and down simultaneously.

なお、流量圧調整部材25は、上型14に設けられた場合について説明したが、下型15に設けてもよく、また上型14と下型15の双方に設けてもよい。
また、樹脂溜めポット16が設けられた上型14とは反対側の下型15には、磁石挿入孔12への樹脂部材18の注入に際し、磁石挿入孔12内の空気を外部へ逃がすベント(図示しない)が設けられている。
樹脂封止装置としては、上型と下型(即ち、金型)とを有し、下型に樹脂部材の原料(ペレット状)を加熱して液状にする樹脂溜めポットが形成された樹脂封止装置を使用することもできる。
また、プランジャ及び流量圧調整部材は、Oリングを介さずに設けてもよい。
The flow pressure adjusting member 25 has been described as being provided on the upper die 14, but may be provided on the lower die 15, or may be provided on both the upper die 14 and the lower die 15.
In addition, the lower mold 15 opposite to the upper mold 14 provided with the resin reservoir pot 16 is vented to release the air in the magnet insertion hole 12 to the outside when the resin member 18 is injected into the magnet insertion hole 12. (Not shown) is provided.
The resin sealing device includes an upper mold and a lower mold (that is, a mold), and a resin seal pot in which a resin reservoir pot is formed on the lower mold by heating the raw material (pellet shape) of the resin member to make it liquid. A stop device can also be used.
Further, the plunger and the flow pressure adjusting member may be provided without using an O-ring.

樹脂封止装置20の上型14に設けた樹脂溜めポット16の個数は、積層鉄心19に設けられた磁石挿入孔12の個数と同数であり、周方向に等間隔に複数設けられている。これにより、樹脂溜めポット16から単数(1個)の磁石挿入孔12に、樹脂流路21を介して樹脂部材18をそれぞれ供給できる。
なお、樹脂封止装置20の上型14に設けた樹脂溜めポット16の個数を、積層鉄心19に設けられた磁石挿入孔12の個数よりも減らすこともできる。これにより、樹脂溜めポット16から複数(例えば、2個又は3個)の磁石挿入孔12に、樹脂流路21を介して樹脂部材18を供給できる。なお、積層鉄心の形状によっては、樹脂溜めポット16の個数を磁石挿入孔12の個数よりも増やすこともある。
ここで、樹脂溜めポット16は、平面視して磁石挿入孔12の半径方向内側に設けているが、半径方向外側に設けてもよい。
The number of the resin reservoir pots 16 provided in the upper mold 14 of the resin sealing device 20 is the same as the number of the magnet insertion holes 12 provided in the laminated iron core 19, and a plurality thereof are provided at equal intervals in the circumferential direction. Thereby, the resin member 18 can be supplied from the resin reservoir pot 16 to the single (one) magnet insertion hole 12 via the resin flow path 21.
Note that the number of the resin reservoir pots 16 provided in the upper mold 14 of the resin sealing device 20 can be reduced more than the number of the magnet insertion holes 12 provided in the laminated iron core 19. Thereby, the resin member 18 can be supplied from the resin reservoir pot 16 to a plurality of (for example, two or three) magnet insertion holes 12 via the resin flow path 21. Depending on the shape of the laminated iron core, the number of resin reservoir pots 16 may be increased more than the number of magnet insertion holes 12.
Here, the resin reservoir pot 16 is provided on the radially inner side of the magnet insertion hole 12 in a plan view, but may be provided on the radially outer side.

このような樹脂封止装置20を使用して、磁石挿入孔12内に形成された隙間17へ樹脂部材18を供給する。このとき、隙間17へ、(1)樹脂部材18を注入する前、(2)樹脂部材18を注入すると同時(即ち、プランジャ22の可動と同時)、及び(3)樹脂部材18を注入した後のいずれか1の時期に、隙間17に流量圧調整部材25を挿入する。
まず、隙間17への流量圧調整部材25の挿入を、隙間17に(1)樹脂部材18を注入する前、又は(2)樹脂部材18を注入すると同時に行う場合について説明する。
この場合、隙間17への樹脂部材18の注入が完了するまで、隙間17へ流量圧調整部材25の一部又は全部が挿入された状態を保持する。なお、樹脂部材18の注入の完了は、磁石挿入孔12を上型14で塞ぐことによって形成された隙間17が、樹脂部材18で充填された状態、又は樹脂部材18及び流量圧調整部材25の一部で充填された状態(例えば、隙間17の90体積%以上100体積%以下程度)を意味する。
By using such a resin sealing device 20, the resin member 18 is supplied to the gap 17 formed in the magnet insertion hole 12. At this time, (1) before injecting the resin member 18 into the gap 17, (2) simultaneously with the injection of the resin member 18 (that is, simultaneously with the movement of the plunger 22), and (3) after injecting the resin member 18 At any one of the times, the flow pressure adjusting member 25 is inserted into the gap 17.
First, the case where the flow rate pressure adjusting member 25 is inserted into the gap 17 (1) before the resin member 18 is injected into the gap 17 or (2) when the resin member 18 is injected at the same time will be described.
In this case, until the injection of the resin member 18 into the gap 17 is completed, a state in which a part or all of the flow pressure adjusting member 25 is inserted into the gap 17 is maintained. In addition, the completion of the injection of the resin member 18 is a state where the gap 17 formed by closing the magnet insertion hole 12 with the upper mold 14 is filled with the resin member 18, or the resin member 18 and the flow rate pressure adjusting member 25. It means a state of being partially filled (for example, about 90% by volume to 100% by volume of the gap 17).

ここで、流量圧調整部材25が隙間17に注入された樹脂部材18へ与える押圧圧力を、隙間17内を移動する樹脂部材18の流動圧力よりも大きく、しかも樹脂溜めポット16から隙間17へ注入する樹脂部材18の注入圧力よりも小さく設定する。
このように、流量圧調整部材25が樹脂部材18へ与える押圧圧力を、隙間17内を移動する樹脂部材18の流動圧力よりも大きくすることで、隙間17内が樹脂部材18で充填される前段階においては、隙間17のうち、隙間寸法が大きい箇所から小さい箇所への樹脂部材18の侵入を容易にできる。また、流量圧調整部材25が樹脂部材18へ与える押圧圧力を、樹脂溜めポット16から隙間17へ注入する樹脂部材18の注入圧力よりも小さくすることで、隙間17内が樹脂部材18及び流量圧調整部材25の一部で充填された後においては、隙間17に注入される樹脂部材18の注入量の増加に伴って、流量圧調整部材25が隙間17から徐々に抜き出される。
Here, the pressure applied to the resin member 18 injected into the gap 17 by the flow pressure adjusting member 25 is greater than the flow pressure of the resin member 18 moving in the gap 17 and injected from the resin reservoir pot 16 into the gap 17. It is set smaller than the injection pressure of the resin member 18 to be performed.
As described above, the pressure applied to the resin member 18 by the flow pressure adjusting member 25 is made larger than the flow pressure of the resin member 18 that moves in the gap 17, so that the gap 17 is filled with the resin member 18. In the stage, the resin member 18 can easily enter the gap 17 from a portion having a large gap size to a small portion. Further, the pressure applied to the resin member 18 by the flow pressure adjusting member 25 is made smaller than the injection pressure of the resin member 18 injected from the resin reservoir pot 16 into the gap 17, so that the inside of the gap 17 has the resin member 18 and the flow pressure pressure. After filling with a part of the adjustment member 25, the flow rate pressure adjustment member 25 is gradually extracted from the gap 17 as the injection amount of the resin member 18 injected into the gap 17 increases.

このように、流量圧調整部材25を駆動する昇降手段24の押圧圧力は、下式に基づいて設定できる。
P×S>F
ここで、Pは流量圧調整部材25が樹脂部材18から受ける圧力(ここでは、上方向)、Sは流量圧調整部材25が樹脂部材18から圧力を受ける面積(ここでは、流量圧調整部材25の下端面)、Fは流量圧調整部材25を隙間17内へ押し込もうとする昇降手段24の力である。
即ち、上記した力関係に基づき、昇降手段24である油圧シリンダー又は空圧シリンダーの能力、又はばね材の材料選定を行う。
Thus, the pressing pressure of the lifting / lowering means 24 that drives the flow pressure adjusting member 25 can be set based on the following equation.
P × S> F
Here, P is the pressure that the flow pressure adjusting member 25 receives from the resin member 18 (upward here), and S is the area that the flow pressure adjusting member 25 receives pressure from the resin member 18 (here, the flow pressure adjusting member 25). F is a force of the lifting / lowering means 24 that tries to push the flow pressure adjusting member 25 into the gap 17.
That is, based on the above-described force relationship, the capacity of the hydraulic cylinder or pneumatic cylinder, which is the lifting means 24, or the material of the spring material is selected.

なお、流量圧調整部材25の一部又は全部の隙間17からの抜き出しは、隙間17に注入する樹脂部材18の注入量に基づいて、制御装置により徐々に行うことも可能である。
そして、磁石挿入孔12に充填した樹脂部材18を加熱硬化させることで、磁石挿入孔12内に挿入された永久磁石13を樹脂部材18で固定できる。
ここで、樹脂部材18の硬化は、流量圧調整部材25の一部を隙間17内の樹脂部材18に浸漬させた状態で行い、その後、流量圧調整部材25を隙間17から抜き出している。なお、隙間17への樹脂部材18の注入が完了した後で、しかも樹脂部材18が硬化する前に、流量圧調整部材25を隙間17から完全に引き抜いた状態で、樹脂部材18の硬化を行ってもよい。
The part or all of the flow pressure adjusting member 25 can be extracted from the gap 17 gradually by the control device based on the injection amount of the resin member 18 injected into the gap 17.
And the permanent magnet 13 inserted in the magnet insertion hole 12 can be fixed with the resin member 18 by heat-hardening the resin member 18 with which the magnet insertion hole 12 was filled.
Here, the resin member 18 is cured in a state in which a part of the flow pressure adjusting member 25 is immersed in the resin member 18 in the gap 17, and then the flow pressure adjusting member 25 is extracted from the gap 17. After the injection of the resin member 18 into the gap 17 is completed and before the resin member 18 is cured, the resin member 18 is cured with the flow rate pressure adjusting member 25 completely pulled out from the gap 17. May be.

次に、隙間17への流量圧調整部材25の挿入を、隙間17に(3)樹脂部材18を注入した後に行う場合について説明する。
この場合、樹脂溜めポット16から隙間17内に注入される樹脂部材18量は、隙間17の容積よりも小さく設定しておく。そして、樹脂部材18の注入後、樹脂部材18が硬化する前に、隙間17内に流量圧調整部材25を押し込むことで、隙間17内の樹脂部材18の未充填箇所に樹脂部材18を侵入させる。これにより、隙間17内に空隙が生じない状態、即ち樹脂部材18と流量圧調整部材25が、隙間17の容積と同じ(例えば、隙間17の90体積%以上100体積%以下程度)になるようにする。
そして、隙間17に注入した樹脂部材18を硬化させた後に、流量圧調整部材25を隙間17から抜き出す。
Next, a case where the flow rate pressure adjusting member 25 is inserted into the gap 17 after (3) the resin member 18 is injected into the gap 17 will be described.
In this case, the amount of the resin member 18 injected from the resin reservoir pot 16 into the gap 17 is set smaller than the volume of the gap 17. Then, after the resin member 18 is injected and before the resin member 18 is cured, the flow rate pressure adjusting member 25 is pushed into the gap 17 so that the resin member 18 enters the unfilled portion of the resin member 18 in the gap 17. . Thereby, a state where no gap is generated in the gap 17, that is, the resin member 18 and the flow rate pressure adjusting member 25 are the same as the volume of the gap 17 (for example, about 90% to 100% by volume of the gap 17). To.
Then, after the resin member 18 injected into the gap 17 is cured, the flow rate pressure adjusting member 25 is extracted from the gap 17.

なお、流量圧調整部材が樹脂製の場合は、この流量圧調整部材を隙間から抜き出さすことなく、流量調整部材のうち隙間内に挿入された部分を他の部分と分離し、流量圧調整部材の一部又は全部を隙間内に残したままにしてもよい。
この場合、樹脂製の流量圧調整部材には、剥離性を高める表面コーティングを行う必要がなく、また、その材質としては、樹脂部材と同一のものか、樹脂部材と同程度の熱膨張係数を持つものが好ましい。
In addition, when the flow pressure adjusting member is made of resin, the flow pressure adjusting member is separated from the other portion without removing the flow pressure adjusting member from the gap to adjust the flow pressure adjusting member. A part or all of the member may be left in the gap.
In this case, the resin flow rate adjusting member does not need to be surface-coated to enhance the peelability, and the material is the same as the resin member or has a thermal expansion coefficient comparable to that of the resin member. What it has is preferable.

なお、樹脂封止装置としては、図4、図5に示すように、樹脂溜めポット16が、磁石挿入孔12と平面視して重なる位置に配置された樹脂封止装置27を使用することもできる。
この場合、樹脂溜めポット16内に設けられたプランジャ22を、上型28に当接している鉄心片10表面に当接する位置まで可動させて、樹脂溜めポット16内の液状の樹脂部材18を隙間17に押し出す。
ここで、樹脂溜めポット16は、単数(1個)の磁石挿入孔12の長手方向中央部に、平面視して重なる位置に配置されているが、隣り合う複数(ここでは2個)の磁石挿入孔12の長手方向端部に、平面視して重なる位置に配置してもよい。
また、樹脂溜めポット16は、平面視して磁石挿入孔12の半径方向内側に配置されているが、半径方向外側に配置してもよい。
なお、このときも、前記した場合と同様、隙間17に、樹脂部材18を注入する前、樹脂部材18を注入すると同時、又は樹脂部材18を注入した後、流量圧調整部材25を挿入できる。
As the resin sealing device, as shown in FIGS. 4 and 5, a resin sealing device 27 in which the resin reservoir pot 16 is disposed at a position overlapping the magnet insertion hole 12 in plan view may be used. it can.
In this case, the plunger 22 provided in the resin reservoir pot 16 is moved to a position where it comes into contact with the surface of the iron core piece 10 that is in contact with the upper mold 28, so that the liquid resin member 18 in the resin reservoir pot 16 is separated by a gap. Extrude to 17.
Here, the resin reservoir pot 16 is arranged at a position overlapping with the central portion in the longitudinal direction of the single (one) magnet insertion hole 12 in a plan view, but a plurality of adjacent (here, two) magnets. You may arrange | position to the position where it overlaps with the longitudinal direction edge part of the insertion hole 12 planarly.
In addition, the resin reservoir pot 16 is disposed on the radially inner side of the magnet insertion hole 12 in plan view, but may be disposed on the radially outer side.
At this time, as in the case described above, the flow pressure adjusting member 25 can be inserted into the gap 17 before the resin member 18 is injected, simultaneously with the injection of the resin member 18, or after the resin member 18 is injected.

以上、本発明を、実施の形態を参照して説明してきたが、本発明は何ら上記した実施の形態に記載の構成に限定されるものではなく、特許請求の範囲に記載されている事項の範囲内で考えられるその他の実施の形態や変形例も含むものである。例えば、前記したそれぞれの実施の形態や変形例の一部又は全部を組合せて本発明の回転子積層鉄心の樹脂封止方法を構成する場合も本発明の権利範囲に含まれる。 As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the configuration described in the above embodiment, and the matters described in the scope of claims. Other embodiments and modifications conceivable within the scope are also included. For example, the case where the resin sealing method for a rotor laminated core of the present invention is configured by combining some or all of the above-described embodiments and modifications is also included in the scope of the right of the present invention.

本発明の一実施の形態に係る回転子積層鉄心の樹脂封止方法における樹脂部材の注入状況を示す磁石挿入孔の部分正断面図である。It is a fragmentary front sectional view of the magnet insertion hole which shows the injection | pouring condition of the resin member in the resin sealing method of the rotor lamination | stacking iron core which concerns on one embodiment of this invention. 同磁石挿入孔の部分側断面図である。It is a partial sectional side view of the same magnet insertion hole. 同磁石挿入孔の平面図である。It is a top view of the magnet insertion hole. 変形例に係る回転子積層鉄心の樹脂封止方法における樹脂部材の注入状況を示す部分側断面図である。It is a fragmentary sectional side view which shows the injection | pouring condition of the resin member in the resin sealing method of the rotor lamination | stacking iron core which concerns on a modification. 同磁石挿入孔の平面図である。It is a top view of the magnet insertion hole.

符号の説明Explanation of symbols

10:鉄心片、11:軸孔、12:磁石挿入孔(磁石挿入部)、13:永久磁石、14:上型、15:下型、16:樹脂溜めポット(樹脂溜め部)、17:隙間、18:樹脂部材、19:回転子積層鉄心、20:樹脂封止装置、21:樹脂流路、22:プランジャ、23:Oリング、24:昇降手段、25:流量圧調整部材、26:Oリング、27:樹脂封止装置、28:上型 10: Iron core piece, 11: Shaft hole, 12: Magnet insertion hole (magnet insertion part), 13: Permanent magnet, 14: Upper mold, 15: Lower mold, 16: Resin reservoir pot (resin reservoir part), 17: Gap , 18: resin member, 19: rotor laminated core, 20: resin sealing device, 21: resin flow path, 22: plunger, 23: O-ring, 24: lifting means, 25: flow pressure adjusting member, 26: O Ring, 27: Resin sealing device, 28: Upper mold

Claims (8)

複数の鉄心片を積層し、中央の軸孔の周囲に形成された複数の磁石挿入部にそれぞれ永久磁石を挿入した後、上型と下型で挟んだ状態で、該上型及び該下型のいずれか1の金型に設けられた樹脂溜め部から、前記永久磁石の挿入後に前記各磁石挿入部内に形成された隙間に、樹脂部材を充填して固定する回転子積層鉄心の樹脂封止方法において、
前記隙間に、(1)前記樹脂部材を注入する前、(2)前記樹脂部材を注入すると同時、及び(3)前記樹脂部材を注入した後のいずれか1の時期に、前記上型及び前記下型のいずれか一方又は双方に上下動可能に設けられた流量圧調整部材を挿入することを特徴とする回転子積層鉄心の樹脂封止方法。
After laminating a plurality of iron core pieces and inserting permanent magnets into a plurality of magnet insertion portions formed around the central shaft hole, the upper mold and the lower mold are sandwiched between the upper mold and the lower mold. Resin sealing of a laminated rotor core in which a resin member is filled and fixed in a gap formed in each magnet insertion portion after insertion of the permanent magnet from a resin reservoir provided in any one of the molds In the method
In the gap, (1) before injecting the resin member, (2) at the same time as injecting the resin member, and (3) at any one time after injecting the resin member, A resin sealing method for a rotor laminated iron core, wherein a flow pressure adjusting member provided to be movable up and down is inserted into one or both of the lower molds.
請求項1記載の回転子積層鉄心の樹脂封止方法において、前記流量圧調整部材を挿入する前記時期は、前記隙間に、(1)前記樹脂部材を注入する前、又は(2)前記樹脂部材を注入すると同時であって、前記隙間への前記樹脂部材の注入が完了するまで、該隙間へ前記流量圧調整部材の一部又は全部が挿入された状態を保持することを特徴とする回転子積層鉄心の樹脂封止方法。 2. The resin sealing method for a rotor laminated core according to claim 1, wherein the time for inserting the flow pressure adjusting member is (1) before injecting the resin member into the gap, or (2) the resin member. And a state in which a part or all of the flow rate pressure adjusting member is inserted into the gap until the injection of the resin member into the gap is completed. A resin sealing method for a laminated iron core. 請求項2記載の回転子積層鉄心の樹脂封止方法において、前記隙間に注入された前記樹脂部材へ前記流量圧調整部材が与える押圧圧力を、前記隙間内を移動する前記樹脂部材の流動圧力よりも大きく、しかも前記樹脂溜め部から前記隙間へ注入する前記樹脂部材の注入圧力よりも小さく設定することを特徴とする回転子積層鉄心の樹脂封止方法。 3. The resin sealing method for a rotor laminated core according to claim 2, wherein the pressure applied by the flow pressure adjusting member to the resin member injected into the gap is greater than the flow pressure of the resin member moving in the gap. And a pressure smaller than the injection pressure of the resin member injected into the gap from the resin reservoir. 請求項2及び3のいずれか1項に記載の回転子積層鉄心の樹脂封止方法において、前記隙間に注入する前記樹脂部材の注入量に応じて、前記流量圧調整部材を前記隙間から抜き出していくことを特徴とする回転子積層鉄心の樹脂封止方法。 The resin sealing method for a rotor laminated core according to any one of claims 2 and 3, wherein the flow rate pressure adjusting member is extracted from the gap according to an injection amount of the resin member injected into the gap. A resin sealing method for a rotor laminated iron core, characterized by: 請求項2〜4のいずれか1項に記載の回転子積層鉄心の樹脂封止方法において、前記隙間への前記樹脂部材の注入が完了した後で、しかも該樹脂部材が硬化する前に、前記流量圧調整部材を前記隙間から完全に抜き出すことを特徴とする回転子積層鉄心の樹脂封止方法。 In the resin sealing method of the rotor lamination | stacking iron core of any one of Claims 2-4, after injection | pouring of the said resin member to the said clearance gap is completed, and before this resin member hardens | cures, the said A resin sealing method for a rotor laminated core, wherein the flow pressure adjusting member is completely extracted from the gap. 請求項1〜4のいずれか1項に記載の回転子積層鉄心の樹脂封止方法において、前記隙間に注入した前記樹脂部材を硬化させた後に、前記流量圧調整部材の一部又は全部を前記隙間から抜き出すことを特徴とする回転子積層鉄心の樹脂封止方法。 In the resin sealing method of the rotor lamination | stacking iron core of any one of Claims 1-4, after hardening the said resin member inject | poured into the said clearance gap, a part or all of the said flow pressure adjustment member is the said. A resin sealing method for a rotor laminated core, which is extracted from a gap. 請求項1〜6のいずれか1項に記載の回転子積層鉄心の樹脂封止方法において、前記流量圧調整部材を、一つの前記磁石挿入部に形成された前記隙間に1又は複数挿入することを特徴とする回転子積層鉄心の樹脂封止方法。 The resin sealing method for a rotor laminated core according to any one of claims 1 to 6, wherein one or a plurality of the flow pressure adjusting members are inserted into the gap formed in one magnet insertion portion. A method for sealing a rotor laminated iron core characterized by the following. 請求項1〜7のいずれか1項に記載の回転子積層鉄心の樹脂封止方法において、前記樹脂溜め部を前記磁石挿入部と平面視して重なる位置に配置した後、前記樹脂溜め部内に設けられたプランジャを、前記金型に当接している前記鉄心片表面に当接する位置まで可動させて、前記樹脂溜め部の前記樹脂部材を前記隙間に押し出すことを特徴とする回転子積層鉄心の樹脂封止方法。 In the resin sealing method of the rotor lamination | stacking iron core of any one of Claims 1-7, after arrange | positioning the said resin reservoir part in the position which overlaps with the said magnet insertion part planarly, in the said resin reservoir part A rotor laminated iron core characterized in that a provided plunger is moved to a position where it comes into contact with the surface of the iron core piece in contact with the mold, and the resin member of the resin reservoir is pushed into the gap. Resin sealing method.
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