JPH0222973B2 - - Google Patents
Info
- Publication number
- JPH0222973B2 JPH0222973B2 JP13277781A JP13277781A JPH0222973B2 JP H0222973 B2 JPH0222973 B2 JP H0222973B2 JP 13277781 A JP13277781 A JP 13277781A JP 13277781 A JP13277781 A JP 13277781A JP H0222973 B2 JPH0222973 B2 JP H0222973B2
- Authority
- JP
- Japan
- Prior art keywords
- frame
- welding
- mask
- spring
- welding electrode
- 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.)
- Expired
Links
- 238000003466 welding Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 9
- 230000000399 orthopedic effect Effects 0.000 claims description 4
- 239000007772 electrode material Substances 0.000 description 2
- ITZSSQVGDYUHQM-UHFFFAOYSA-N [Ag].[W] Chemical compound [Ag].[W] ITZSSQVGDYUHQM-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- ZTXONRUJVYXVTJ-UHFFFAOYSA-N chromium copper Chemical compound [Cr][Cu][Cr] ZTXONRUJVYXVTJ-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229940100890 silver compound Drugs 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/06—Screens for shielding; Masks interposed in the electron stream
- H01J29/07—Shadow masks for colour television tubes
- H01J29/073—Mounting arrangements associated with shadow masks
Description
【発明の詳細な説明】
本発明は内張りタイプのシヤドウマスクの組立
方法に係り、特にフレームとスプリングの組立方
法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of assembling a lined type shadow mask, and more particularly to a method of assembling a frame and a spring.
一般に内張りタイプのシヤドウマスクの組立
は、フレームの外側にスプリングをスポツト抵抗
溶接により固定した後、整形マスクのスカートを
フレームの内側に組込み、スポツト抵抗溶接によ
りマスクとフレームを固定してなる。通常、マス
クはフレームに対して寸法的にできるだけガタの
少ない密着した設計となつている。従つて、フレ
ーム内側にスプラツシユ（バリ）、圧痕などがあ
ると、マスクを挿入する際の障壁となり、強制的
に挿入しようとするとマスクの変形不良を発生す
る。 Generally, a lined type shadow mask is assembled by fixing a spring to the outside of the frame by spot resistance welding, then incorporating the skirt of the orthopedic mask inside the frame, and fixing the mask and frame by spot resistance welding. Usually, the mask is designed to be in close contact with the frame with as little dimensional play as possible. Therefore, if there are splashes (burrs) or impressions on the inside of the frame, they will become a barrier when inserting the mask, and if an attempt is made to forcefully insert the mask, the mask will be deformed.
しかるに、スプラツシユの発生度合いは溶接電
流に比例する。一方溶接電流を小さくすると溶接
強度が低下する。このため、従来、スプリングと
フレームとの溶接時にフレームの内側にスプラツ
シユおよび圧痕が発生するのは避けられなく、マ
スクをフレームに挿入する作業を著しく低下させ
ていた。 However, the degree of splash occurrence is proportional to the welding current. On the other hand, when the welding current is decreased, the welding strength decreases. For this reason, heretofore, splashes and impressions have been unavoidable on the inside of the frame when welding the spring and the frame, which has significantly reduced the work of inserting the mask into the frame.
本発明の目的はフレームの内側におけるスプラ
ツシユの発生を低減させると同時に、フレームと
スプリングの溶接時の圧痕を低減し、マスクをフ
レームに挿入する際の作業性が著しく改善された
内張りシヤドウマスクの溶接方法を提供すること
にある。 The purpose of the present invention is to provide a welding method for a lined shadow mask that reduces the occurrence of splash on the inside of the frame, reduces impressions when welding the frame and spring, and significantly improves workability when inserting the mask into the frame. Our goal is to provide the following.
以下、本発明の一実施例を図により説明する。
まず、フレーム１にスプリング２を溶接するに際
し、外側溶接電極３の電極材としてクロム銅、内
側溶接電極４の電極材としてタングステン銀化合
物を使用する。また電極先端部分の面積は、内側
溶接電極４が外側溶接電極３より大きくなつてお
り、本実施例ではその比を3.0にしてある。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
First, when welding the spring 2 to the frame 1, chromium copper is used as the electrode material for the outer welding electrode 3, and tungsten silver compound is used as the electrode material for the inner welding electrode 4. Further, the area of the electrode tip portion of the inner welding electrode 4 is larger than that of the outer welding electrode 3, and in this embodiment, the ratio is set to 3.0.
このように、フレーム１に対する接触面積は内
側溶接電極４が外側溶接接電極３より大きくとつ
てあるため、内側接触面での電流密度（電流／面
積）は外側のそれに比較して小さい。従つて、ス
プラツシユの発生はフレーム１の内側において少
ない。また内側溶接電極４の硬度は外側溶接電極
３のものより大きいので、内側溶接電極４の外側
溶接電極３に対応する部分での凹み発生を防ぐこ
とができる。また内側および外側を同一加圧で実
施した場合においても、内側溶接電極４の接触面
積が大きいので、フレーム１に対する単位面積当
りの圧力は小さく、フレーム１の内側面における
電極の圧痕は小さくなる。このため、次の工程で
フレーム１に整形マスク５を容易に挿入すること
ができる。 As described above, since the inner welding electrode 4 has a larger contact area with the frame 1 than the outer welding electrode 3, the current density (current/area) at the inner contact surface is smaller than that at the outer side. Therefore, less splash occurs inside the frame 1. Further, since the hardness of the inner welding electrode 4 is greater than that of the outer welding electrode 3, it is possible to prevent the occurrence of dents in the portion of the inner welding electrode 4 corresponding to the outer welding electrode 3. Further, even when applying the same pressure to the inside and outside, since the contact area of the inside welding electrode 4 is large, the pressure per unit area against the frame 1 is small, and the impression of the electrode on the inside surface of the frame 1 is small. Therefore, the shaping mask 5 can be easily inserted into the frame 1 in the next step.
以上の説明から明らかな如く、本発明によれ
ば、フレームにスプリングを溶接する時にフレー
ムの内面におけるスプラツシユの発生と圧痕量を
低減できるため、次工程のマスクとフレームの溶
接に先立つマスクとフレームの換合作業が容易と
なり、不良低減と作業のスピード向上が図れる。 As is clear from the above description, according to the present invention, it is possible to reduce the generation of splash and the amount of impressions on the inner surface of the frame when welding the spring to the frame. Replacement work becomes easier, reducing defects and improving work speed.
図はシヤドウマスクのフレームとスプリングを
本発明の方式で溶接する方法を示す縦断面図であ
る。
１……フレーム、２……スプリング、３……外
側溶接電極、４……内側溶接電極、５……整形マ
スク。
The figure is a longitudinal sectional view showing a method of welding the frame and spring of a shadow mask according to the method of the present invention. 1... Frame, 2... Spring, 3... Outer welding electrode, 4... Inner welding electrode, 5... Orthopedic mask.
Claims (1)
溶接により固定した後、整形マスクのスカートを
フレームの内側に組込み、スポツト抵抗溶接によ
りマスクとフレームを固定してなる内張りシヤド
ウマスクの組立方法において、前記フレームとス
プリングの溶接時にフレーム側の内側溶接電極の
先端面積をスプリング側の外側溶接電極の先端面
積より大きくして溶接固定を行なうことを特徴と
する内張りシヤドウマスクの組立方法。 ２ フレームの外側にスプリングをスポツト抵抗
溶接により固定した後、整形マスクのスカートを
フレームの内側に組込み、スポツト溶接によりマ
スクとフレームを固定してなる内張りシヤドウマ
スクの組立方法において、前記フレームとスプリ
ングの溶接時にフレーム側の内側溶接電極の先端
面積および材質硬度をスプリング側の外側溶接電
極の先端面積および材質硬度よりそれぞれ大きく
して溶接固定を行なうことを特徴とする内張りシ
ヤドウマスクの組立方法。[Claims] 1. In a method of assembling a lined shadow mask, in which a spring is fixed to the outside of the frame by spot resistance welding, the skirt of the orthopedic mask is assembled inside the frame, and the mask and frame are fixed by spot resistance welding. A method for assembling a lined shadow mask, characterized in that when welding the frame and the spring, the tip area of the inner welding electrode on the frame side is made larger than the tip area of the outer welding electrode on the spring side, and the welding and fixation is carried out. 2. In a method of assembling a lined shadow mask in which a spring is fixed to the outside of the frame by spot resistance welding, the skirt of the orthopedic mask is assembled inside the frame, and the mask and frame are fixed by spot welding, the frame and the spring are welded. A method for assembling a lined shadow mask characterized in that the tip area and material hardness of the inner welding electrode on the frame side are made larger than the tip area and material hardness of the outer welding electrode on the spring side and welding and fixing are performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13277781A JPS5835831A (en) | 1981-08-26 | 1981-08-26 | Assembly of lining shadow mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13277781A JPS5835831A (en) | 1981-08-26 | 1981-08-26 | Assembly of lining shadow mask |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5835831A JPS5835831A (en) | 1983-03-02 |
| JPH0222973B2 true JPH0222973B2 (en) | 1990-05-22 |
Family
ID=15089301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13277781A Granted JPS5835831A (en) | 1981-08-26 | 1981-08-26 | Assembly of lining shadow mask |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5835831A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0453762U (en) * | 1990-09-13 | 1992-05-08 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2595497B2 (en) * | 1984-05-29 | 1997-04-02 | ブラザー工業株式会社 | Paper thickness detector for printing equipment |
-
1981
- 1981-08-26 JP JP13277781A patent/JPS5835831A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0453762U (en) * | 1990-09-13 | 1992-05-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5835831A (en) | 1983-03-02 |
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