JPH01278704A - Insulation treatment device for electromagnetic steel plate - Google Patents
Insulation treatment device for electromagnetic steel plateInfo
- Publication number
- JPH01278704A JPH01278704A JP10769288A JP10769288A JPH01278704A JP H01278704 A JPH01278704 A JP H01278704A JP 10769288 A JP10769288 A JP 10769288A JP 10769288 A JP10769288 A JP 10769288A JP H01278704 A JPH01278704 A JP H01278704A
- Authority
- JP
- Japan
- Prior art keywords
- conveyor belt
- electromagnetic steel
- steel plate
- varnish
- irradiation device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 32
- 239000010959 steel Substances 0.000 title claims abstract description 32
- 238000009413 insulation Methods 0.000 title claims abstract description 18
- 239000002966 varnish Substances 0.000 claims abstract description 32
- 238000000016 photochemical curing Methods 0.000 claims description 16
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 15
- 238000001723 curing Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Chemical Treatment Of Metals (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
発
本発明はタービ屹電機や水車発電機等の大形回転電機に
用いられる電磁鋼板の絶縁処理装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Objective of the Invention] (Industrial Field of Application) The present invention relates to an insulation treatment device for electromagnetic steel sheets used in large rotating electric machines such as turbine electric machines and water turbine generators.
（従来の技術）
回転電機の固定子鉄心では１回転子から流入する交番磁
束による渦電流の発生を防止するため通常、油性ワニス
を高温焼付は絶縁した薄葉電磁鋼板を積層する構造が採
用されている。電磁鋼板の表面に焼付けられた絶縁ワニ
スは固定子鉄心にその機能を発揮させるため、長期間の
高温運転に耐え、回転子の磁気吸引力に由来する固定子
鉄心の変形や振動に対しても積層電磁鋼板間の絶縁性を
失なってはならない。積層電磁鋼板間の絶縁性が破れる
と、固定子鉄心の渦電流損が増して局部的な温度上昇を
招き、酷い場合には固定子鉄心を溶損する重大な事故に
至ることができる。(Prior art) In order to prevent the generation of eddy currents due to the alternating magnetic flux flowing from the first rotor, the stator core of a rotating electric machine usually has a structure in which thin electromagnetic steel plates coated with oil-based varnish and insulated by high-temperature baking are laminated. There is. The insulating varnish baked onto the surface of the electromagnetic steel sheet enables the stator core to perform its functions, so it can withstand long-term high-temperature operation and resists deformation and vibration of the stator core caused by the magnetic attraction of the rotor. The insulation between laminated electrical steel sheets must not be lost. If the insulation between the laminated electromagnetic steel plates is broken, eddy current loss in the stator core increases, leading to a local temperature rise, and in severe cases, this can lead to a serious accident in which the stator core melts away.
かかる電磁鋼板への油性ワニスの焼付は処理方法を以下
に説明する。第３図において、焼付を行なおうとする電
磁鋼板スタック（ト）から油性ワニスのを塗布ワニス■
を塗布するためのロールコータ＝（３）に送られた個々
の電磁鋼板（イ）は、ここでその両面に油性ワニス■を
塗布された後、ベルト面上に小さなピンを並へ立てたコ
ンベアベルト０に載せられ、高温の焼付は炉０内で焼付
は処理され、さらに送風冷却炉■で室温付近まで冷却さ
れ、最終的に焼付は完了した電磁鋼板スタック（８）に
まとめられる。The method for baking oil-based varnish onto such electrical steel sheets will be explained below. In Figure 3, oil-based varnish is applied from the electrical steel sheet stack (G) to be baked.
The individual electromagnetic steel sheets (A) sent to the roll coater = (3) for coating are coated with oil-based varnish (■) on both sides. The sheets are placed on belt 0, and the high-temperature seizing is treated in furnace 0, and further cooled to around room temperature in fan cooling furnace 2, and finally assembled into a stack of electromagnetic steel sheets (8) in which baking has been completed.
（発明が解決しようとする課Ｍ）
このような電磁鋼板（へ）の絶縁処理には、その粘度の
問題から溶剤型ｐ油性ワニス■を用いるのが普通である
。溶剤型の油性ワニス■では焼付処理工程で多量の溶剤
蒸気を発生するため、爆発および公害の両面から安全衛
生に対する配慮が必要になり、また長大な焼付は炉（０
および冷却炉■の据付は場所の確保や該焼付は炉（へ）
内の高温を維持するためのエネルギー費などが問題とな
る。(Problem M to be Solved by the Invention) For the insulation treatment of such electrical steel sheets, solvent-type p-oil varnish (2) is usually used due to its viscosity. Solvent-based oil-based varnishes generate a large amount of solvent vapor during the baking process, so safety and health considerations must be taken from both the perspective of explosion and pollution.
Securing the space for installing the cooling furnace and the furnace (for baking)
Problems include energy costs to maintain the high temperature inside.
油性ワニス（２）を焼付は処理してなる電磁鋼板Ｇ）の
絶縁方法に存在する問題点を解決する手段として無溶剤
型の光硬化ワニスを用いる方法がある。There is a method of using a solvent-free photocuring varnish as a means to solve the problems that exist in the method of insulating the electrical steel sheet G) obtained by baking the oil-based varnish (2).
これは第４図のように無溶剤型の光硬化ワニス（９）を
塗布した電磁鋼Ｆｉ（イ）に短波長の紫外光を照射する
ことにより該塗布した光硬化ワニスを硬化し、絶縁皮膜
を形成するものである。光硬化ワニス（９）は油性ワニ
ス■と比較して、一般に硬化反応が速いため、コンベア
（１１）の長さを短くでき、結果として装置の据付は面
積を縮小することが可能となる。また無溶剤型の光硬化
ワニス（９）を用いることや
によって爆発に対する危険性φ作業者に対する健康障害
の問題も解決されると同時に、ワニスの硬化エネルギー
が熱から光に替わることによって省エネルギー効果も得
られる。このように利点の多い光硬化ワニス（９）では
あるが、光硬化故の欠点もある。それは光の到達しない
部分は全く硬化反応が進行せず、絶縁皮膜が形成されな
いことである。As shown in Fig. 4, electromagnetic steel Fi (A) coated with a solvent-free photocuring varnish (9) is irradiated with short wavelength ultraviolet light to harden the photocurable varnish and form an insulating film. It forms the Since the photocuring varnish (9) generally has a faster curing reaction than the oil-based varnish (2), the length of the conveyor (11) can be shortened, and as a result, the installation area of the device can be reduced. In addition, by using a solvent-free photo-curing varnish (9), the problem of explosion hazards and health hazards for workers can be solved, and at the same time, energy savings can be achieved by switching the curing energy of the varnish from heat to light. can get. Although photocuring varnish (9) has many advantages as described above, it also has disadvantages due to photocuring. This is because the curing reaction does not proceed at all in the areas where the light does not reach, and no insulating film is formed.
したがって第４図に示すような絶縁処理装置では例え、
金網状のコンベアベルト（１１）を用いても。Therefore, for example, in the insulation treatment equipment as shown in Fig. 4,
Even if a wire mesh conveyor belt (11) is used.
ベルトの下から光を照射したのでは電磁鋼板（イ）の下
面に陰を生じ、絶縁皮膜の形成されない部分が残ってし
まう。If light is irradiated from below the belt, a shadow will be created on the lower surface of the electromagnetic steel sheet (a), leaving a portion where the insulating film is not formed.
本発明は以上のような点に鑑みなされたものであり、光
硬化ワニスを用いて、電磁鋼板の両面にむらなく絶縁皮
膜を形成することができる絶縁処理装置を提供すること
を目的とする。The present invention has been made in view of the above points, and an object of the present invention is to provide an insulation treatment device that can uniformly form an insulation film on both sides of an electrical steel sheet using a photocuring varnish.
（課題を解決するための手段）
上記目的を達成するため本発明の電磁鋼板の絶縁処理装
置は、電磁鋼板の両面に光硬化ワニスを塗布するロール
コータ−と、このロールコータ−の出口側に隣接して設
けられベルト外表面に多数の小ピンが配された第１のコ
ンベアベルトとこの第１のコンベアベルトの上方に配置
された第１の照射装置と、前記第１のコンベアベルトの
出口側に隣接して設けられベルト内側下部に近接して磁
石が固定前Ｆｉすれた第２のコンベアベルトと、この第
２のコンベアベルトの下方に配置された第２の照射装置
とを備えた構成とし、ロールコータ−から送り出された
光硬化ワニスが塗布された電磁鋼板を第１のコンベアベ
ルト上では第１の照射袋の
置でそわ上面を照射し、第２のコンベアベルトに送り、
第２のコンベアベルトでは送り出された電磁鋼板をベル
ト下部に吸引しながら搬送しその下面を第２の照射装置
にて照射するようにする。(Means for Solving the Problems) In order to achieve the above object, the electrical steel sheet insulation treatment apparatus of the present invention includes a roll coater that applies a photocuring varnish to both sides of the electrical steel sheet, and a roll coater that coats a photocuring varnish on both sides of the electrical steel sheet. A first conveyor belt provided adjacent to each other and having a large number of small pins arranged on the outer surface of the belt, a first irradiation device placed above the first conveyor belt, and an outlet of the first conveyor belt. A configuration including a second conveyor belt that is provided adjacent to the side and has a magnet fixed before Fi close to the inner lower part of the belt, and a second irradiation device that is placed below the second conveyor belt. Then, the electromagnetic steel sheet coated with photocuring varnish sent out from the roll coater is irradiated on the top surface with a first irradiation bag placed on the first conveyor belt, and sent to the second conveyor belt.
On the second conveyor belt, the electromagnetic steel sheet sent out is conveyed while being attracted to the lower part of the belt, and the lower surface thereof is irradiated with a second irradiation device.
（作 用）
本発明の電磁鋼板の絶縁処理装置は以上のように構成さ
れており、光硬化ワニスを塗布した電磁鋼板を上面と下
面とに分けて照射装置にて紫外光を照射し、かつ各照射
面と紫外光ランプとはその間に遮光体が存在しないよう
に配置されているので、電磁鋼板の両面にはむらのない
均一な絶縁皮膜が形成される。(Function) The insulation treatment device for electrical steel sheets of the present invention is configured as described above, in which an electrical steel sheet coated with photocuring varnish is divided into the upper and lower surfaces, and is irradiated with ultraviolet light using an irradiation device. Since each irradiation surface and the ultraviolet light lamp are arranged so that no light shield exists between them, a uniform insulating film is formed on both sides of the electromagnetic steel sheet.
（実施例）
以下、本発明の一実施例につき、第１図を参照して説明
する。(Example) An example of the present invention will be described below with reference to FIG.
未処理の電磁鋼板スタック（１）からロールコータ−（
３）に送られ、その両面に無溶剤型の光硬化ワニス（９
）を塗布された電磁鋼板０）にはベルト面上に小さなピ
ンを並べ立てた第１のコンベアベルト（１２）に載せて
搬送する間に、第１の照射装置の上面照射用ランプ（１
０ａ）から紫外光が照射され、その上面に絶縁皮膜が形
成される。このとき、電磁鋼板（イ）の下面には全く紫
外光が照射されないので、塗布された光硬化エポキシワ
ニス（９）は未硬化のまま第２のコンベアベルト（１３
）に移送される。From the untreated electrical steel sheet stack (1) to the roll coater (
3), and a solvent-free photocuring varnish (9) is applied to both sides.
) The electromagnetic steel sheet 0) coated with
Ultraviolet light is irradiated from 0a), and an insulating film is formed on its upper surface. At this time, the lower surface of the electromagnetic steel sheet (A) is not irradiated with ultraviolet light at all, so the applied photocurable epoxy varnish (9) remains uncured until it is transferred to the second conveyor belt (13).
).
第２のコンベアベルト（１３）には下部ベルトの内面に
近接して磁石（１４）が配置されている。第１のコンベ
アベルト（１２）から移送された電磁鋼板Ｇ）には、磁
石（１４）の吸引力によって第２のコンベアベルト（１
３）の下部ベルト外面に吸引搬送される間に、第２の照
射装置の下面照射用ランプ（１０ｂ）から紫外光が照射
され、その下面にも絶縁皮膜が形成される。A magnet (14) is arranged on the second conveyor belt (13) close to the inner surface of the lower belt. The electromagnetic steel sheet G) transferred from the first conveyor belt (12) is transferred to the second conveyor belt (12) by the attractive force of the magnet (14).
While being suctioned and conveyed to the outer surface of the lower belt in step 3), ultraviolet light is irradiated from the lower surface irradiation lamp (10b) of the second irradiation device, and an insulating film is also formed on the lower surface.
本実施例では光硬化ワニス（９）を塗布した電磁鋼板０
）を上面と下面に分け、遮光体が存在しない状態で紫外
光照射できるため、電磁鋼板６）両面にむらのない均一
な！＠緑皮膜を形成できるばかりでなく、第１のコンベ
アベルト（１２）と第２のコンベアベルト（１３）が連
続し、その間に電６ｊ＆鋼板（４）の反転等の操作がな
いため、絶縁処理装置全体としての搬送速度を高められ
るという利点がある。In this example, the electromagnetic steel sheet 0 coated with photocuring varnish (9)
) can be divided into the top and bottom surfaces and irradiated with ultraviolet light without any light shielding material, making it possible to produce even and uniform electromagnetic steel sheets (6) on both sides! @ Not only can a green film be formed, but the first conveyor belt (12) and the second conveyor belt (13) are continuous, and there is no operation such as reversing the electric 6j & steel plate (4) between them, so insulation treatment is possible. This has the advantage that the conveyance speed of the entire apparatus can be increased.
また他の実施例として第２図のように、第２のコンベア
ベルト（１５）の下部ベルト内面しこ接して真空吸引槽
（１６）を配置し、第２のコンベアベルト（１５）のベ
ルトに小径の孔を分散加工しておくことにより、下部ベ
ルト外面に電磁鋼板＠）を吸引搬送する上記実施例と同
様の効果が得られる。As another example, as shown in FIG. 2, a vacuum suction tank (16) is arranged in close contact with the inner surface of the lower belt of the second conveyor belt (15), and By distributing small diameter holes, the same effect as in the above embodiment in which the magnetic steel sheet @) is sucked and conveyed on the outer surface of the lower belt can be obtained.
以上説明したように本発明によれば、爆発に対する危険
性や作業者に対する健康障害の問題がなく、据付は面積
がノＪＸさく、省エネルギー効果が高く、かつ電磁鋼板
の両面に均一な絶縁皮膜を形成できる電磁鋼板の絶縁処
理装置を得ることができる。As explained above, according to the present invention, there is no danger of explosion or health problems for workers, the installation area is small, the energy saving effect is high, and a uniform insulating film is formed on both sides of the electrical steel sheet. It is possible to obtain an insulation treatment device for electromagnetic steel sheets that can be formed.
第１図は本発明の一実施例の絶縁処理装置の構成図、第
２図は本発明の他の実施例の絶縁処理装置の構成図、第
３図は従来の絶縁処理装置の構成図、第４図は従来の光
硬化ワニスを用いた絶縁処理装置の構成図である。
１．８・・・電磁鋼板スタック ３・・・ロールコ
ータ−４・・電磁鋼板 ９・・光硬化ワニ
ス１０ａ、１０ｂ・・・照射用ランプ １２・・・第
１のコンベアベルト１３、１５・・・第２のコンベアベ
ルト１４・・磁石 １６・・・真空吸
引槽代理人 弁理士 則 近 憲 佑
同 第子丸 健
耘FIG. 1 is a configuration diagram of an insulation treatment apparatus according to an embodiment of the present invention, FIG. 2 is a configuration diagram of an insulation treatment apparatus according to another embodiment of the invention, and FIG. 3 is a configuration diagram of a conventional insulation treatment apparatus. FIG. 4 is a block diagram of a conventional insulation treatment apparatus using photocuring varnish. 1.8...Electromagnetic steel plate stack 3...Roll coater 4...Electromagnetic steel plate 9...Light curing varnish 10a, 10b...Irradiation lamp 12...First conveyor belt 13, 15...・Second conveyor belt 14...Magnet 16...Vacuum suction tank Representative Patent attorney Noriyuki Chika Yudo Kenji Daishimaru
Claims (1)
ーと、このロールコーターの出口側に隣接して設けられ
ベルト外表面に多数の小ピンが配された第１のコンベア
ベルトと、この第１のコンベアベルトの上方に配置され
た第１の照射装置と、前記第１のコンベアベルトの搬出
側に隣接して設けられベルトの内側下部に近接して磁石
が固定配置された第２のコンベアベルトと、この第２の
コンベアベルトの下方に配置された第２の照射装置とを
備えて成り、前記ロールコーターから送り出された光硬
化ワニスが塗布された電磁鋼板を前記第１のコンベアベ
ルト上では前記第１の照射装置にてその上面を照射し前
記第２のコンベアベルトに送り、この第２のコンベアベ
ルトでは搬送された電磁鋼板をベルト下部に吸引しなが
ら搬送しその下面を前記第２の照射装置にて照射して、
光硬化ワニスを硬化して電磁鋼板の両面に絶縁皮膜を形
成することを特徴とする電磁鋼板の絶縁処理装置。A roll coater that applies photocuring varnish to both sides of an electromagnetic steel sheet, a first conveyor belt that is installed adjacent to the exit side of the roll coater and has a large number of small pins arranged on the outer surface of the belt, and a first irradiation device disposed above the conveyor belt; and a second conveyor belt provided adjacent to the discharge side of the first conveyor belt and having a magnet fixedly disposed close to the inner lower part of the belt. and a second irradiation device disposed below the second conveyor belt, the electromagnetic steel sheet coated with the photocuring varnish sent out from the roll coater is placed on the first conveyor belt. The top surface of the sheet is irradiated by the first irradiation device and sent to the second conveyor belt, and the conveyed electromagnetic steel sheet is conveyed while being sucked to the lower part of the belt, and the bottom surface is irradiated with the second irradiation device. Irradiate with the device,
An insulation treatment device for electrical steel sheets, characterized by curing a photocurable varnish to form an insulating film on both sides of the electrical steel sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10769288A JPH01278704A (en) | 1988-05-02 | 1988-05-02 | Insulation treatment device for electromagnetic steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10769288A JPH01278704A (en) | 1988-05-02 | 1988-05-02 | Insulation treatment device for electromagnetic steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01278704A true JPH01278704A (en) | 1989-11-09 |
Family
ID=14465540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10769288A Pending JPH01278704A (en) | 1988-05-02 | 1988-05-02 | Insulation treatment device for electromagnetic steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01278704A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755629A (en) * | 2019-02-27 | 2019-05-14 | 合肥国轩高科动力能源有限公司 | A kind of lithium battery closes core and catches up with film device |
-
1988
- 1988-05-02 JP JP10769288A patent/JPH01278704A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755629A (en) * | 2019-02-27 | 2019-05-14 | 合肥国轩高科动力能源有限公司 | A kind of lithium battery closes core and catches up with film device |
| CN109755629B (en) * | 2019-02-27 | 2021-07-13 | 合肥国轩高科动力能源有限公司 | Lithium cell closes core and drives membrane device |
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