JP5375264B2 - Laminated core manufacturing equipment - Google Patents

Laminated core manufacturing equipment Download PDF

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JP5375264B2
JP5375264B2 JP2009083511A JP2009083511A JP5375264B2 JP 5375264 B2 JP5375264 B2 JP 5375264B2 JP 2009083511 A JP2009083511 A JP 2009083511A JP 2009083511 A JP2009083511 A JP 2009083511A JP 5375264 B2 JP5375264 B2 JP 5375264B2
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nozzle
adhesive
nozzle guide
steel plate
guide hole
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JP2010238817A (en
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勝司 笠井
常弘 山路
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JFE Steel Corp
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JFE Steel Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To manufacture a laminated core of superior quality, wherein the laminated core hardly causes abnormal application of an adhesive to a steel plate surface and is free of lamination abnormality, protrusion of the adhesive, etc. <P>SOLUTION: In the manufacturing apparatus including a punching mechanism section (a), an adhesive applying mechanism section (b), an outer periphery punching mechanism section (c), and a core material laminating-coupling mechanism section (d), the adhesive applying mechanism section (b) has: a nozzle guide 3 having a nozzle guide hole 4 bored in a vertical direction and projected on a lower surface of a upper die 1; and a nozzle 5 for adhesive application, having a nozzle discharge opening 50 at a lower end and provided in the nozzle guide hole 4 of the nozzle guide 3 to slide and move vertically, wherein the nozzle discharge opening 50 of the nozzle 5 can move from a position shifted back into the nozzle guide hole 4 to a position in level with a lower end surface 30 of the nozzle guide 3, which in turn has its lower end surface 30 brought into contact with the steel plate surface during adhesive application to function as a steel plate pressing means. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

本発明は、軟磁性鋼板などの鋼板を素材とする積層コアの製造装置に関するものである。   The present invention relates to an apparatus for manufacturing a laminated core made of a steel plate such as a soft magnetic steel plate.

モータやトランスなどに使用される積層コア（積層鉄心）を製造する方法として、鋼板を打ち抜いて得られた複数枚のコア材（鉄芯材料）を接着剤で結合し、積層コアとして一体化する方法が知られている（例えば、特許文献１〜５）。一般にこの製造方法では、接着剤塗布手段および打ち抜き手段（パンチ・ダイ）を備えた装置内に鋼板を送り込み、まず、鋼板にコア材外周以外の打ち抜き加工を施した後、コア材となる鋼板部分に接着剤を塗布し、しかる後、鋼板にコア材外周の打ち抜き加工を施す。打ち抜かれたコア材は、打ち抜き手段（ダイ）の抜き孔内に順次積層され、積層したコア材どうしが上記塗布された接着剤で結合され、これにより複数枚のコア材が接着剤で一体に結合された積層コアが得られる。   As a method of manufacturing a laminated core (laminated iron core) used for motors and transformers, a plurality of core materials (iron core materials) obtained by punching steel plates are bonded with an adhesive, and integrated as a laminated core. Methods are known (for example, Patent Documents 1 to 5). In general, in this manufacturing method, a steel plate is fed into an apparatus equipped with an adhesive application unit and a punching unit (punch / die). Then, an adhesive is applied to the steel plate, and then the outer periphery of the core material is punched into the steel plate. The punched core material is sequentially stacked in the punching hole of the punching means (die), and the stacked core materials are bonded together by the applied adhesive, whereby a plurality of core materials are integrated with the adhesive. A bonded laminated core is obtained.

特開２００１−３２１８５０号公報JP 2001-321850 A 特開２００２−１５１３３９号公報JP 2002-151339 A 特開２００１−０２５２１８号公報JP 2001-025218 A 特開２００６−３３４６４８号公報JP 2006-334648 A 特開２００７−３２４４５５号公報JP 2007-324455 A

上記のような積層コアの製造工程において、コア材となる鋼板部分に接着剤を塗布するには、通常、接着剤塗布用のノズルが用いられるが、従来技術の装置では、鋼板面に対して接着剤が過剰に塗布されたり、本来接着剤を塗布しない工程で接着剤が供給されてしまうなどの異常塗布が生じることがあり、積層異常や接着剤のはみ出し等の原因となっていた。
このうち積層異常は、本来、積層コアどうしの切り離しのために接着剤を塗布してはならない鋼板部分に接着剤が塗布されてしまうことで発生する異常であり、この積層異常を生じると積層コアが不良品となる。このような接着剤の予定外の異常塗布は、接着剤塗布用のノズルと鋼板との異常接触や、ノズルからの接着剤のもれ等が原因となって起きる。 In the manufacturing process of the laminated core as described above, a nozzle for applying an adhesive is usually used to apply an adhesive to a steel plate portion that is a core material. Abnormal application such as excessive application of the adhesive or supply of the adhesive in a process in which the adhesive is not originally applied may occur, causing a stacking abnormality or an adhesive sticking out.
Among these, the stacking abnormality is an abnormality that occurs due to the adhesive being applied to the steel plate portion that should not be coated with the adhesive to separate the stacked cores. Becomes defective. Such unscheduled abnormal application of the adhesive is caused by abnormal contact between the adhesive application nozzle and the steel plate, leakage of the adhesive from the nozzle, or the like.

また、接着剤のはみ出しは、積層コアが完成した以降の工程での加工に大きな影響を与え、例えば、溶接時のガス発生や、絶縁材との接着における接着不良を引き起こす。このような接着剤のはみ出しは、接着剤が過剰に塗布されたり、決められた所定位置以外の部分に塗布されるなどの異常塗布により生じる。
接着剤の異常塗布を回避する方法としては、接着剤の吸引手段を用いたり、スプレー式の供給手段を用いることなども考えられるが、均一な塗布条件を確保するには装置が高価なものとなり、また、接着剤の粘度（温度）の微妙な調整・管理が必要となるため、製造条件の管理が難しくなる。 Further, the protrusion of the adhesive greatly affects the processing in the process after the laminated core is completed, and causes, for example, gas generation during welding and adhesion failure in bonding with the insulating material. Such protrusion of the adhesive is caused by abnormal application such as excessive application of the adhesive or application to a portion other than a predetermined position.
As a method of avoiding abnormal application of the adhesive, it is possible to use an adhesive suction means or a spray-type supply means, but the apparatus becomes expensive to ensure uniform application conditions. In addition, since it is necessary to delicately adjust and manage the viscosity (temperature) of the adhesive, it is difficult to manage the manufacturing conditions.

したがって本発明の目的は、上記従来技術の課題を解決し、鋼板面に対する接着剤の異常塗布が生じにくく、積層異常や接着剤のはみ出し等がない優れた品質の積層コアを製造することができ、しかも比較的安価で且つ製造条件の管理も容易な積層コアの製造装置を提供することにある。   Therefore, the object of the present invention is to solve the above-mentioned problems of the prior art, and to produce an excellent quality laminated core that is unlikely to cause abnormal application of adhesive to the steel sheet surface and that does not cause lamination abnormality or adhesive protrusion. In addition, it is an object of the present invention to provide a laminated core manufacturing apparatus that is relatively inexpensive and easy to manage manufacturing conditions.

上記課題を解決するための本発明の要旨は、以下のとおりである。
［1］上金型（１）と下金型（２）で構成される装置本体が、鋼板にコア材外周以外の打ち抜き加工を施す打ち抜き機構部（ａ）と、コア材となる鋼板部分に接着剤を塗布する接着剤塗布機構部（ｂ）と、鋼板にコア材外周の打ち抜き加工を施す打ち抜き機構部（ｃ）と、打ち抜かれたコア材を積層させてコア材どうしを前記接着剤で結合するコア材積層・結合機構部（ｄ）を有する製造装置において、
前記接着剤塗布機構部（ｂ）は、上下方向にノズルガイド孔（４）が形成され、上金型（１）の下面に突設されたノズルガイド（３）と、下端にノズル吐出口（５０）を有し、前記ノズルガイド（３）のノズルガイド孔（４）内に上下スライド移動可能に設けられた接着剤塗布用のノズル（５）とを有し、
前記ノズル（５）のノズル吐出口（５０）は、前記ノズルガイド孔（４）の内方に退避した位置からノズルガイド（３）の下端面（３０）と面一となる位置まで移動可能であり、
前記ノズルガイド孔（４）は、ノズルガイド孔（４）の内方位置に退避したノズル吐出口（５０）から垂れ又はもれでた接着剤が付着して保持される内面を有し、
前記ノズルガイド（３）は、その下端面（３０）が接着剤塗布時に鋼板面に当接し、下金型（２）の上面に対する鋼板押さえ手段として機能することを特徴とする積層コアの製造装置。
［2］上記［1］の製造装置において、ノズル（５）を付勢してノズル吐出口（５０）をノズルガイド孔（４）内の内方に退避させるスプリング（６）と、該スプリング（６）の付勢に抗して、ノズル（５）を接着剤塗布位置まで押し下げる押下手段（７）とを有することを特徴とする積層コアの製造装置。 The gist of the present invention for solving the above problems is as follows.
[1] An apparatus main body composed of an upper mold (1) and a lower mold (2) includes a punching mechanism (a) for punching a steel plate other than the outer periphery of the core material, and a steel plate portion serving as a core material. An adhesive application mechanism part (b) for applying an adhesive, a punching mechanism part (c) for punching the outer periphery of the core material on a steel plate, and a core material punched out are laminated to each other with the adhesive. In the manufacturing apparatus having the core material lamination / bonding mechanism (d) to be bonded,
The adhesive application mechanism (b) has a nozzle guide hole (4) formed in the vertical direction, a nozzle guide (3) projecting from the lower surface of the upper mold (1), and a nozzle discharge port ( 50), and a nozzle (5) for applying an adhesive provided in the nozzle guide hole (4) of the nozzle guide (3) so as to be slidable up and down.
The nozzle discharge port (50) of the nozzle (5) is movable from a position retracted inward of the nozzle guide hole (4) to a position flush with the lower end surface (30) of the nozzle guide (3). Yes,
The nozzle guide hole (4) has an inner surface on which an adhesive dripping or leaking from the nozzle discharge port (50) retracted to the inner position of the nozzle guide hole (4) is attached and held,
The nozzle guide (3) has a lower end surface (30) that abuts against the steel plate surface during application of an adhesive, and functions as a steel plate pressing means for the upper surface of the lower mold (2). .
[2] In the manufacturing apparatus of [1] above, a spring (6) that urges the nozzle (5) to retract the nozzle discharge port (50) inwardly in the nozzle guide hole (4), and the spring ( 6. An apparatus for manufacturing a laminated core, comprising pressing means (7) for pressing down the nozzle (5) to the adhesive application position against the urging of 6).

本発明の製造装置によれば、通常はノズル（５）のノズル吐出口（５０）をノズルガイド孔（４）の内方位置に退避させておき、必要な場合にだけ接着剤塗布位置に移動（下降）させて接着剤塗布を行うことができるため、鋼板面に対する接着剤の異常塗布が生じにくく、また、ノズル吐出口（５０）がノズルガイド孔（４）の内方位置に退避した状態でノズル吐出口（５０）から接着剤の垂れやもれ等が生じても、接着剤がノズル吐出口（５０）の下方にあるノズルガイド孔内面に付着して保持されるので、予定外の鋼板面に接着剤が付着するようなことが防止できる。これらの結果、積層異常や接着剤のはみ出し等がない優れた品質の積層コアを製造することができる。また、接着剤塗布機構部（ｂ）は簡易な構成であり、難かしい操作や管理も必要がないので、設備コストや操業コストも低く抑えることができる。   According to the manufacturing apparatus of the present invention, the nozzle discharge port (50) of the nozzle (5) is normally retracted to the inner position of the nozzle guide hole (4) and moved to the adhesive application position only when necessary. Since the adhesive can be applied (lowered), abnormal application of the adhesive to the steel plate surface is unlikely to occur, and the nozzle discharge port (50) is retracted to the inner position of the nozzle guide hole (4). Even if the adhesive drips or leaks from the nozzle discharge port (50), the adhesive adheres to the inner surface of the nozzle guide hole below the nozzle discharge port (50) and is held unscheduled. It can prevent that an adhesive agent adheres to a steel plate surface. As a result, it is possible to manufacture an excellent quality laminated core that is free from lamination abnormality and adhesive sticking out. Moreover, since the adhesive application mechanism part (b) has a simple configuration and does not require difficult operation and management, the equipment cost and the operation cost can be kept low.

本発明の製造装置の一実施形態を示す説明図Explanatory drawing which shows one Embodiment of the manufacturing apparatus of this invention 図１の製造装置の接着剤塗布機構部について、接着剤塗布時の状態を示す縦断面図About the adhesive application mechanism part of the manufacturing apparatus of FIG. 1, the longitudinal cross-sectional view which shows the state at the time of adhesive application 図１の製造装置の接着剤塗布機構部について、接着剤非塗布時の状態を示す縦断面図About the adhesive application mechanism part of the manufacturing apparatus of FIG. 1, the longitudinal cross-sectional view which shows the state at the time of adhesive non-application | coating

図１は、本発明の積層コアの製造装置の一実施形態を示すもので、図１（イ）は製造装置の各機構部での鋼板ｘの加工・処理状況を示す説明図、図１（ロ）は製造装置を縦断面した状態で示す説明図である。また、図２および図３は、図１の実施形態における接着剤塗布機構部の縦断面図であり、図２は接着剤塗布時の状態を、図２は接着剤非塗布時の状態を、それぞれ示している。
この積層コアの製造装置は、装置本体Ａが上下金型１，２で構成され、上金型１が打抜パンチを備える可動金型、下金型２がダイを備える固定金型となっている。上金型１は、図示しない油圧式駆動機構などにより上下動する。
このような上下金型１，２からなる装置本体Ａは、以下に示すような各機構部を備えている。また、装置本体Ａの入側には、帯状の鋼板ｘを装置本体Ａ内に順送りするための材料送り機構Ｂ（送りロール）が設けられている。 FIG. 1 shows an embodiment of the laminated core manufacturing apparatus of the present invention. FIG. 1 (a) is an explanatory view showing the processing / processing status of the steel sheet x in each mechanism part of the manufacturing apparatus. (B) is an explanatory view showing the manufacturing apparatus in a longitudinal section. 2 and 3 are longitudinal sectional views of the adhesive application mechanism part in the embodiment of FIG. 1, FIG. 2 shows a state when the adhesive is applied, FIG. 2 shows a state when the adhesive is not applied, Each is shown.
In this laminated core manufacturing apparatus, the apparatus body A is composed of upper and lower molds 1 and 2, the upper mold 1 is a movable mold having a punch, and the lower mold 2 is a fixed mold having a die. Yes. The upper mold 1 moves up and down by a hydraulic drive mechanism (not shown).
The apparatus main body A composed of such upper and lower molds 1 and 2 is provided with each mechanism as shown below. In addition, a material feeding mechanism B (feeding roll) for sequentially feeding the strip-shaped steel plate x into the apparatus main body A is provided on the entry side of the apparatus main body A.

前記装置本体Ａは、鋼板送り方向の上流側から、鋼板ｘにコア材外周以外の打ち抜き加工を施す打ち抜き機構部ａと、鋼板ｘにコア材外周の打ち抜き加工を施す外周打ち抜き機構部ｃを備えている。
前記打ち抜き機構部ａは、上金型１に設けられるパンチ１５と、下金型２に設けられるダイ１６を備え、コア材内周やティースなどのようなコア材外周以外の打ち抜き加工を行う。このようなコア材外周以外の打ち抜き加工は、複数工程で行われる場合があり、その場合には、打ち抜き機構部ａは鋼板送り方向で複数設けられる。
前記外周打ち抜き機構部ｃは、上金型１に設けられるパンチ１７と、下金型２に設けられるダイ１８を備え、コア材外周の打ち抜き（コア材の切り離し）を行う。パンチ１７は、打ち抜かれたコア材ｙをその下側のコア材ｙに対して押圧（加圧）する押圧手段を兼ねていてもよい。 The apparatus main body A includes a punching mechanism portion a for punching a steel plate x other than the outer periphery of the core material and an outer peripheral punching mechanism portion c for punching the outer periphery of the core material on the steel plate x from the upstream side in the steel sheet feeding direction. ing.
The punching mechanism a includes a punch 15 provided in the upper die 1 and a die 16 provided in the lower die 2, and performs a punching process other than the outer periphery of the core material such as the inner periphery of the core material and the teeth. Such punching operations other than the outer periphery of the core material may be performed in a plurality of steps, and in that case, a plurality of punching mechanism portions a are provided in the steel sheet feeding direction.
The outer peripheral punching mechanism portion c includes a punch 17 provided in the upper mold 1 and a die 18 provided in the lower mold 2, and performs punching of the outer periphery of the core material (separation of the core material). The punch 17 may also serve as a pressing unit that presses (presses) the punched core material y against the lower core material y.

鋼板送り方向において、打ち抜き機構部ａと外周打ち抜き機構部ｃとの間には、コア材となる鋼板部分に接着剤を塗布する接着剤塗布機構部ｂを備えている。図２および図３は、この接着剤塗布機構部ｂの詳細（縦断面）を示している。
この接着剤塗布機構部ｂは、上金型１の下面に突設されたノズルガイド３を有し、このノズルガイド３には上下方向にノズルガイド孔４が貫設されている。このノズルガイド３は、その下端面３０が接着剤塗布時に鋼板面に当接し、鋼板押さえ手段として機能する。
上金型１の本体には、前記ノズルガイド孔４に連通するノズルガイド孔４ａが貫設されている。この上金型１内のノズルガイド孔４ａは、その上部に第１の拡径部４０ａを有し、さらにその上部（ノズルガイド孔４ａの上端）に、拡径部４０ａよりもさらに拡径した第２の拡径部４１ａを有している。
上金型１には、接着剤供給管用の導孔１０が形成され、その先端が前記ノズルガイド孔４ａの途中に開口（連通）している。 In the steel plate feeding direction, an adhesive application mechanism portion b for applying an adhesive to a steel plate portion serving as a core material is provided between the punching mechanism portion a and the outer peripheral punching mechanism portion c. 2 and 3 show details (longitudinal section) of the adhesive application mechanism part b.
The adhesive application mechanism part b has a nozzle guide 3 projecting from the lower surface of the upper mold 1, and a nozzle guide hole 4 is provided through the nozzle guide 3 in the vertical direction. The lower end surface 30 of the nozzle guide 3 abuts on the steel plate surface when the adhesive is applied, and functions as a steel plate pressing means.
A nozzle guide hole 4 a communicating with the nozzle guide hole 4 is provided through the main body of the upper mold 1. The nozzle guide hole 4a in the upper mold 1 has a first enlarged diameter portion 40a at the upper portion thereof, and further expanded in diameter at the upper portion (the upper end of the nozzle guide hole 4a) than the enlarged diameter portion 40a. It has the 2nd enlarged diameter part 41a.
A guide hole 10 for an adhesive supply pipe is formed in the upper mold 1, and the tip thereof is opened (communication) in the middle of the nozzle guide hole 4 a.

前記ノズルガイド孔４，４ａ内には、下端にノズル吐出口５０を有する接着剤塗布用のノズル５が上下スライド移動可能に設けられている。このノズル５のノズル吐出口５０は、図３に示すようなノズルガイド孔４の内方に退避した位置（上昇点）から、図２に示すようなノズルガイド３の下端面３０と面一となる位置（下降点）、すなわち接着剤塗布位置まで移動可能である。
前記ノズル５のノズル孔５１はノズル長手方向の途中まで形成され、その上端５３がノズル５の側面に開口している。
前記導孔１０内には接着剤供給管１１が配置され、この接着剤供給管１１の先端が、ノズル５の側面に開口したノズル孔５１の上端５３に、樹脂などからなるフレキシブルな連結管１２を介して接続されている。
前記接着剤供給管１１は、図示しない接着剤供給部に接続され、この接着剤供給部から適宜接着剤が供給される。 In the nozzle guide holes 4 and 4a, an adhesive application nozzle 5 having a nozzle discharge port 50 at the lower end is provided so as to be slidable up and down. The nozzle discharge port 50 of the nozzle 5 is flush with the lower end surface 30 of the nozzle guide 3 as shown in FIG. 2 from the position (the rising point) retracted inward of the nozzle guide hole 4 as shown in FIG. It can move to the position (descent point), that is, the adhesive application position.
The nozzle hole 51 of the nozzle 5 is formed halfway in the nozzle longitudinal direction, and its upper end 53 opens on the side surface of the nozzle 5.
An adhesive supply pipe 11 is disposed in the guide hole 10, and a flexible connecting pipe 12 made of resin or the like is attached to an upper end 53 of a nozzle hole 51 opened at the side of the nozzle 5 at the tip of the adhesive supply pipe 11. Connected through.
The adhesive supply pipe 11 is connected to an adhesive supply unit (not shown), and an adhesive is appropriately supplied from the adhesive supply unit.

前記ノズル５の上部には拡径部５２が設けられ、その上端には、上面にカム係合用の凹凸部９０を有する部材９が連結されている。そして、前記拡径部５２と部材９が、それぞれノズルガイド孔４ａの拡径部４０ａと拡径部４１ａにそれぞれ収納されている。
前記ノズル５にはスプリング６が外装され、このスプリング６の上端がノズル５の拡径部５２の端面に、また下端がノズルガイド孔４ａの拡径部４０ａの端面にそれぞれ係止される。このスプリング６は、ノズル５を上方に付勢してノズル吐出口５０をノズルガイド孔４の内方位置に退避させる働きをする。 A diameter-expanded portion 52 is provided on the upper portion of the nozzle 5, and a member 9 having an uneven portion 90 for cam engagement on the upper surface is connected to the upper end thereof. And the said enlarged diameter part 52 and the member 9 are each accommodated in the enlarged diameter part 40a and the enlarged diameter part 41a of the nozzle guide hole 4a, respectively.
A spring 6 is externally mounted on the nozzle 5, and the upper end of the spring 6 is engaged with the end surface of the enlarged diameter portion 52 of the nozzle 5 and the lower end thereof is engaged with the end surface of the enlarged diameter portion 40 a of the nozzle guide hole 4 a. The spring 6 functions to urge the nozzle 5 upward to retract the nozzle discharge port 50 to the inner position of the nozzle guide hole 4.

上金型１の上面または本体内部には、ノズル５の押下手段７を構成するスライドカム１３が水平方向スライド移動可能に設けられている。このスライドカム１３の下面にはカム１３０が突設されている。このスライドカム１３は、水平方向でスライド移動し、カム１３０が部材９の凹凸部９０の凸部と噛み合うことにより、スプリング６の付勢に抗して、ノズル５を接着剤塗布位置（図２の位置）まで押し下げる。一方、このスライドカム１３が水平方向でスライド移動し、カム１３０が部材９の凹凸部９０の凹部と噛み合った場合には、スプリング６の付勢によりノズル５は上方に移動し、ノズル吐出口５０がノズルガイド孔４の内方に退避する。スライドカム１３は、図示しない駆動手段（例えば、シリンダ装置）で駆動される。
なお、図２および図３は、１組のノズルガイド孔４，４ａとノズル５のみが示されているが、通常、接着剤は図１（イ）に示すように複数箇所に塗布されるので、これら複数箇所の接着剤塗布部に対応した組数のノズルガイド孔４，４ａとノズル５が設けられる。
また、接着剤塗布機構部ｂは、鋼板送り方向において外周打ち抜き機構部ｃの上流側の任意の位置に設けることができ、例えば、打ち抜き機構部ａの上流側に設けもよいし、複数ある打ち抜き機構部ａの間に設けてもよい。 On the upper surface of the upper mold 1 or inside the main body, a slide cam 13 constituting the pressing means 7 for the nozzle 5 is provided so as to be horizontally slidable. A cam 130 projects from the lower surface of the slide cam 13. The slide cam 13 slides in the horizontal direction, and the cam 130 meshes with the convex portion of the concavo-convex portion 90 of the member 9, thereby resisting the bias of the spring 6 and causing the nozzle 5 to move to the adhesive application position (FIG. 2). Press down to the position. On the other hand, when the slide cam 13 slides in the horizontal direction and the cam 130 meshes with the concave portion of the concave and convex portion 90 of the member 9, the nozzle 5 moves upward by the bias of the spring 6, and the nozzle discharge port 50. Retracts to the inside of the nozzle guide hole 4. The slide cam 13 is driven by driving means (not shown) (for example, a cylinder device).
2 and 3 show only one set of the nozzle guide holes 4 and 4a and the nozzle 5, the adhesive is usually applied to a plurality of locations as shown in FIG. A set number of nozzle guide holes 4, 4a and nozzles 5 corresponding to the plurality of adhesive application portions are provided.
Further, the adhesive application mechanism part b can be provided at any position upstream of the outer peripheral punching mechanism part c in the steel sheet feeding direction. For example, the adhesive application mechanism part b may be provided upstream of the punching mechanism part a, or there may be a plurality of punching You may provide between the mechanism parts a.

前記外周打ち抜き機構部ｃを構成するダイ１８の抜き孔１９およびその下方には、打ち抜かれたコア材ｙを積層させてコア材どうしを前記接着剤で結合するコア材積層・結合機構部ｄが設けられている。このコア材積層・結合機構部ｄは、前記抜き孔１９の下方でコア材を支持する支持体２０、積層されたコア材を加熱し、接着剤を加熱硬化させるための加熱装置２１（電熱ヒータなど）などを備えている。
また、上下金型１，２の間には、打ち抜き加工する際に鋼板ｘを下金型２に対して押さえるための板状のストリッパ８（板押さえ）が配置されている。このストリッパ８は、前記パンチ１５、ノズルガイド３およびパンチ１７を、それぞれ挿通させる挿通孔８０，８１，８２を有しており、例えば、スプリングを備えた保持手段（図示せず）により上金型１に保持されている。 A core material stacking / bonding mechanism portion d for stacking the punched core material y and bonding the core materials with the adhesive is formed in the punch hole 19 of the die 18 constituting the outer peripheral punching mechanism portion c and below the die hole 19. Is provided. The core material stacking / bonding mechanism part d includes a support 20 that supports the core material below the punched hole 19 and a heating device 21 (electric heater) for heating the stacked core material to heat and cure the adhesive. Etc.).
Between the upper and lower molds 1 and 2, a plate-shaped stripper 8 (plate pressing) for pressing the steel plate x against the lower mold 2 when punching is disposed. The stripper 8 has insertion holes 80, 81, and 82 through which the punch 15, the nozzle guide 3 and the punch 17 are inserted, respectively. For example, the upper mold is formed by a holding means (not shown) having a spring. 1 is held.

次に、以上のような製造装置による積層コアの製造工程について説明する。
図１の製造装置において、鋼板ｘの打ち抜き、接着剤の塗布は、上金型１（可動金型）が下金型２に対して下降することによりなされる。この際、ストリッパ７が鋼板ｘを下金型２に対して押さえて拘束する。
また、鋼板ｘは、材料送り機構Ｂにより装置本体Ａ内に送り込まれるとともに、各工程に対して順送りされる。
装置本体Ａ内に送り込まれた鋼板ｘには、まず、打ち抜き機構部ａにおいて、パンチ１５とダイ１６によりコア材外周以外（本実施形態ではコア材内周）の打ち抜き加工が施される。
なお、このようなコア材外周以外の打ち抜き加工は複数の工程で行われる場合があり、その場合には、複数の工程毎に打ち抜き機構部ａが設けられ、鋼板が順送りされる。 Next, the manufacturing process of the lamination | stacking core by the above manufacturing apparatuses is demonstrated.
In the manufacturing apparatus of FIG. 1, the steel plate x is punched and the adhesive is applied by lowering the upper mold 1 (movable mold) with respect to the lower mold 2. At this time, the stripper 7 presses and restrains the steel plate x against the lower mold 2.
Further, the steel plate x is fed into the apparatus main body A by the material feeding mechanism B and is sequentially fed to each process.
The steel plate x fed into the apparatus main body A is first subjected to punching processing other than the outer periphery of the core material (in this embodiment, the inner periphery of the core material) by the punch 15 and the die 16 in the punching mechanism portion a.
Note that punching processing other than the outer periphery of the core material may be performed in a plurality of processes. In that case, a punching mechanism part a is provided for each of the plurality of processes, and the steel plates are sequentially fed.

次いで、鋼板ｘは接着剤塗布機構部ｂに送られ、コア材となる鋼板部分の上面にノズル５から接着剤ｓが部分的に塗布される。
上金型１が下降することにより、ノズルガイド３は、その下端面３０が鋼板面に当接し、鋼板押さえ手段として機能する。
本発明の製造装置の１つの使用形態では、ノズル５（ノズル吐出口５０）の移動をコア材となる各鋼板部分への接着剤塗布毎に行う。この場合には、ノズル５は、図３に示すようにノズル吐出口５０がノズルガイド孔４の内方に退避した位置から、図２に示すようにノズル吐出口５０がノズルガイド３の下端面３０と面一となる位置（接着剤塗布位置）まで、押下手段７（スライドカム１３）により押し下げられる。この状態で、ノズル５のノズル孔５１に接着剤供給管１１から接着剤が供給され、ノズル吐出口５０から接着剤が吐出され、鋼板面に塗布される。 Subsequently, the steel plate x is sent to the adhesive application mechanism part b, and the adhesive s is partially applied from the nozzle 5 to the upper surface of the steel plate portion that becomes the core material.
When the upper mold 1 is lowered, the lower end surface 30 of the nozzle guide 3 comes into contact with the steel plate surface and functions as a steel plate pressing means.
In one usage pattern of the manufacturing apparatus of the present invention, the nozzle 5 (nozzle discharge port 50) is moved every time the adhesive is applied to each steel plate portion serving as a core material. In this case, the nozzle 5 is configured such that the nozzle discharge port 50 is located at the lower end surface of the nozzle guide 3 as shown in FIG. It is pushed down by the pressing means 7 (slide cam 13) to a position (adhesive application position) which is flush with 30. In this state, the adhesive is supplied from the adhesive supply pipe 11 to the nozzle hole 51 of the nozzle 5, and the adhesive is discharged from the nozzle discharge port 50 and applied to the steel plate surface.

接着剤塗布完了後、押下手段７（スライドカム１３）の作動を解除することで、ノズル吐出口５０をノズルガイド孔４の内方に退避させ、これと相前後して上金型１が上昇する。
以上のように、非接着剤塗布時にはノズル吐出口５０をノズルガイド孔４の内方に退避させておけば、ノズル吐出口５０から接着剤の垂れやもれ等が生じても、接着剤がノズル吐出口５０の下方にあるノズルガイド孔４の内面に付着して保持されるので、予定外の鋼板面に接着剤が付着するようなことが防止できる。
接着剤塗布機構部ｂでは、積層コアの最上部のコア材を構成する鋼板部分には接着剤ｓを塗布しない。したがって、この鋼板部分が接着剤塗布機構部ｂに移動して来た場合も、ノズル５のノズル吐出口５０は、ノズルガイド孔４の内方位置に退避した状態とする。 After the application of the adhesive is completed, the operation of the pressing means 7 (slide cam 13) is released to retract the nozzle discharge port 50 to the inside of the nozzle guide hole 4, and the upper die 1 is raised at the same time. To do.
As described above, if the nozzle discharge port 50 is retracted inward of the nozzle guide hole 4 when the non-adhesive agent is applied, the adhesive can be removed even if the adhesive drips or leaks from the nozzle discharge port 50. Since it adheres and is hold | maintained at the inner surface of the nozzle guide hole 4 under the nozzle discharge port 50, it can prevent that an adhesive agent adheres to the steel plate surface which is not planned.
In the adhesive application mechanism part b, the adhesive s is not applied to the steel plate portion constituting the uppermost core material of the laminated core. Therefore, also when this steel plate part moves to the adhesive application mechanism part b, the nozzle discharge port 50 of the nozzle 5 is in a state of being retracted to the inner position of the nozzle guide hole 4.

本発明の製造装置の他の使用形態では、ノズル吐出口５０をノズルガイド孔４の内方に避難させるのを、積層コアの最上部のコア材を構成する鋼板部分に対して接着剤塗布機構部ｂで接着剤を塗布しない場合のみとする。すなわち、
そのような鋼板部分が接着剤塗布機構部ｂに移動して来た場合のみ、ノズル吐出口５０をノズルガイド孔４の内方に避難させる。一方、鋼板部分に接着剤を塗布する工程では、常時、ノズル吐出口５０を図２に示すような接着剤塗布位置に保持する。
なお、接着剤の塗布形状に特別な制限はないが、接着剤の塗布面積が著しく小さいと、積層コア形状が波打ちなどを起こし、所定形状にできない恐れがあるため、積層コアが所定の形状を確保できるよう、外周打ち抜き形状に近い形状で、部分的に塗布することが好ましい。 In another usage pattern of the manufacturing apparatus of the present invention, the nozzle discharge port 50 is evacuated to the inside of the nozzle guide hole 4 so that the adhesive coating mechanism is applied to the steel plate portion constituting the uppermost core material of the laminated core. Only when no adhesive is applied at part b. That is,
Only when such a steel plate portion has moved to the adhesive application mechanism portion b, the nozzle discharge port 50 is evacuated to the inside of the nozzle guide hole 4. On the other hand, in the step of applying the adhesive to the steel plate portion, the nozzle discharge port 50 is always held at the adhesive application position as shown in FIG.
There is no particular restriction on the adhesive application shape, but if the adhesive application area is extremely small, the laminated core shape may be wavy and cannot be formed into a predetermined shape. In order to ensure, it is preferable to apply partially in a shape close to the outer peripheral punching shape.

次いで、鋼板ｘは外周打ち抜き機構部４に送られ、ここでパンチ１７とダイ１８によりコア材外周の打ち抜き加工が施され、コア材ｙが鋼板ｘから打ち抜かれる。
打ち抜かれたコア材ｙは、ダイ１８の抜き孔１９内に積層し、この抜き孔１９内とその下方のコア材積層・結合機構部ｄにおいて、積層したコア材ｙどうしが前記接着剤ｓで結合する。この際、パンチ１７により、打ち抜かれたコア材ｙをその下側のコア材に対して押圧（加圧）し、接着性を高めるようにしてもよい。
前記接着剤塗布機構部ｂでは、積層コアの最上部のコア材ｙを構成する鋼板部分には接着剤ｓを塗布しないので、所定枚数のコア材ｙのみが接着剤ｓで一体に結合された積層コアｚが得られる。支持体２０は、抜き孔１９の下方で積層したコア材ｙおよび積層コアｚを支持し、打ち抜かれたコア材ｙが積層する毎に順次下降する。また、積層コアｚは加熱装置２１で加熱され、コア材ｙ間の接着剤ｓを加熱硬化する。 Next, the steel plate x is sent to the outer peripheral punching mechanism 4 where the punch 17 and the die 18 are punched on the outer periphery of the core material, and the core material y is punched from the steel plate x.
The punched core material y is stacked in the punch hole 19 of the die 18, and the core material y stacked in the punch hole 19 and the core material stacking / bonding mechanism portion d below the punch hole 19 is bonded with the adhesive s. Join. At this time, the punch 17 may press (pressurize) the punched core material y against the lower core material so as to enhance the adhesiveness.
In the adhesive application mechanism part b, since the adhesive s is not applied to the steel plate portion constituting the uppermost core material y of the laminated core, only a predetermined number of core materials y are integrally bonded with the adhesive s. A laminated core z is obtained. The support 20 supports the core material y and the laminated core z laminated below the punch hole 19 and descends each time the punched core material y is laminated. The laminated core z is heated by the heating device 21 to heat and cure the adhesive s between the core materials y.

以上のように、本発明の製造装置では、ノズル５のノズル吐出口５０をノズルガイド孔４の内方位置に退避させておき、必要な場合にだけ接着剤塗布位置に移動（下降）させて接着剤塗布を行うことができるため、鋼板面に対する接着剤の異常塗布が生じにくい。また、ノズル吐出口５０がノズルガイド孔４の内方位置に退避した状態でノズル吐出口５０から接着剤の垂れやもれ等が生じても、接着剤がノズル吐出口５０の下方にあるノズルガイド孔内面に付着して保持されるので、予定外の鋼板面に接着剤が付着ようなことが防止できる。これらの結果、積層異常や接着剤のはみ出し等がない積層コアが製造される。   As described above, in the manufacturing apparatus of the present invention, the nozzle discharge port 50 of the nozzle 5 is retracted to the inner position of the nozzle guide hole 4 and moved (lowered) to the adhesive application position only when necessary. Since the adhesive can be applied, abnormal application of the adhesive to the steel sheet surface is unlikely to occur. In addition, even if the adhesive drips or leaks from the nozzle discharge port 50 with the nozzle discharge port 50 retracted to the inner position of the nozzle guide hole 4, the nozzle is located below the nozzle discharge port 50. Since it adheres to the inner surface of the guide hole and is held, it is possible to prevent the adhesive from adhering to the unplanned steel plate surface. As a result, a laminated core having no lamination abnormality or adhesive sticking is produced.

１ 上金型
２ 下金型
３ ノズルガイド
４，４ａ ノズルガイド孔
５ ノズル
６ スプリング
７ 押下手段
８ ストリッパ
９ 部材
１０ 導孔
１１ 接着剤供給管
１２ 連結管
１３ スライドカム
１５ パンチ
１６ ダイ
１７ パンチ
１８ ダイ
１９ 抜き孔
２０ 支持体
２１ 加熱装置
３０ 下端面
４０ａ，４１ａ 拡径部
５０ ノズル吐出口
５１ ノズル孔
５２ 拡径部
５３ 上端
８０，８１，８２ 挿通孔
９０ 凹凸部
１３０ カム
Ａ 装置本体
Ｂ 材料送り機構
ａ 打ち抜き機構部
ｂ 接着剤塗布機構部
ｃ 外周打ち抜き機構部
ｄ コア材積層・結合機構部
ｘ 鋼板
ｙ コア材
ｚ 積層コア
ｓ 接着剤 DESCRIPTION OF SYMBOLS 1 Upper die 2 Lower die 3 Nozzle guide 4,4a Nozzle guide hole 5 Nozzle 6 Spring 7 Depressing means 8 Stripper 9 Member 10 Conducting hole 11 Adhesive supply pipe 12 Connection pipe 13 Slide cam 15 Punch 16 Die 17 Punch 18 Die DESCRIPTION OF SYMBOLS 19 Outgoing hole 20 Support body 21 Heating apparatus 30 Lower end surface 40a, 41a Expanded diameter part 50 Nozzle discharge port 51 Nozzle hole 52 Expanded diameter part 53 Upper end 80, 81, 82 Insertion hole 90 Uneven part 130 Cam A Apparatus body B Material feed mechanism a punching mechanism part b adhesive application mechanism part c outer periphery punching mechanism part d core material lamination / bonding mechanism part x steel plate y core material z laminated core s adhesive

Claims (2)

上金型（１）と下金型（２）で構成される装置本体が、鋼板にコア材外周以外の打ち抜き加工を施す打ち抜き機構部（ａ）と、コア材となる鋼板部分に接着剤を塗布する接着剤塗布機構部（ｂ）と、鋼板にコア材外周の打ち抜き加工を施す打ち抜き機構部（ｃ）と、打ち抜かれたコア材を積層させてコア材どうしを前記接着剤で結合するコア材積層・結合機構部（ｄ）を有する製造装置において、
前記接着剤塗布機構部（ｂ）は、上下方向にノズルガイド孔（４）が形成され、上金型（１）の下面に突設されたノズルガイド（３）と、下端にノズル吐出口（５０）を有し、前記ノズルガイド（３）のノズルガイド孔（４）内に上下スライド移動可能に設けられた接着剤塗布用のノズル（５）とを有し、
前記ノズル（５）のノズル吐出口（５０）は、前記ノズルガイド孔（４）の内方に退避した位置からノズルガイド（３）の下端面（３０）と面一となる位置まで移動可能であり、
前記ノズルガイド孔（４）は、ノズルガイド孔（４）の内方位置に退避したノズル吐出口（５０）から垂れ又はもれでた接着剤が付着して保持される内面を有し、
前記ノズルガイド（３）は、その下端面（３０）が接着剤塗布時に鋼板面に当接し、下金型（２）の上面に対する鋼板押さえ手段として機能することを特徴とする積層コアの製造装置。 The apparatus body composed of the upper mold (1) and the lower mold (2) has a punching mechanism part (a) for punching a steel sheet other than the outer periphery of the core material, and an adhesive on the steel sheet part to be the core material. An adhesive application mechanism part (b) to be applied, a punching mechanism part (c) for punching the outer periphery of the core material on a steel plate, and a core for stacking the punched core material and bonding the core materials together with the adhesive In the manufacturing apparatus having the material lamination / bonding mechanism (d),
The adhesive application mechanism (b) has a nozzle guide hole (4) formed in the vertical direction, a nozzle guide (3) projecting from the lower surface of the upper mold (1), and a nozzle discharge port ( 50), and a nozzle (5) for applying an adhesive provided in the nozzle guide hole (4) of the nozzle guide (3) so as to be slidable up and down.
The nozzle discharge port (50) of the nozzle (5) is movable from a position retracted inward of the nozzle guide hole (4) to a position flush with the lower end surface (30) of the nozzle guide (3). Yes,
The nozzle guide hole (4) has an inner surface on which an adhesive dripping or leaking from the nozzle discharge port (50) retracted to the inner position of the nozzle guide hole (4) is attached and held,
The nozzle guide (3) has a lower end surface (30) that abuts against the steel plate surface during application of an adhesive, and functions as a steel plate pressing means for the upper surface of the lower mold (2). . ノズル（５）を付勢してノズル吐出口（５０）をノズルガイド孔（４）内の内方に退避させるスプリング（６）と、該スプリング（６）の付勢に抗して、ノズル（５）を接着剤塗布位置まで押し下げる押下手段（７）とを有することを特徴とする請求項１に記載の積層コアの製造装置。   A spring (6) that urges the nozzle (5) to retreat the nozzle discharge port (50) inwardly within the nozzle guide hole (4), and a nozzle ( 5. The laminated core manufacturing apparatus according to claim 1, further comprising a pressing means (7) for pressing 5) down to the adhesive application position.
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