JPS63121231A - Manufacture of cathode-ray tube - Google Patents

Manufacture of cathode-ray tube

Info

Publication number
JPS63121231A
JPS63121231A JP26728086A JP26728086A JPS63121231A JP S63121231 A JPS63121231 A JP S63121231A JP 26728086 A JP26728086 A JP 26728086A JP 26728086 A JP26728086 A JP 26728086A JP S63121231 A JPS63121231 A JP S63121231A
Authority
JP
Japan
Prior art keywords
neck
section
electron gun
air
neck section
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.)
Granted
Application number
JP26728086A
Other languages
Japanese (ja)
Other versions
JPH0766741B2 (en
Inventor
Ikoo Baba
馬場 猪虎雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP26728086A priority Critical patent/JPH0766741B2/en
Publication of JPS63121231A publication Critical patent/JPS63121231A/en
Publication of JPH0766741B2 publication Critical patent/JPH0766741B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

PURPOSE:To prevent the unstable distortion of the upper section of a neck section due to heating and the oxidation of an inside electron gun by depositing the neck section while blowing the air through an air nozzle to the outer periphery of the neck section above the mating section with a circular burner. CONSTITUTION:When a neck section 11a and the stem section 17 of an electron gun 16 inserted into this neck section 11a are to be deposited, the flame from a circular burner 20 is applied to the neck section 11a to heat and melt it, and it is deposited to the stem section 17. In this case, the air is blown through an air nozzle 27 to the upper section of the outer periphery of the neck section 11a to serve as a kind of an air curtain, thus a high-temperature gas stream 26 is prevented from rising. Therefore, the upper section of the neck section 11a is not heated, and the unstable distortion of the neck section 11a and neck cracks caused by it are reliably prevented from occurring. A high-temperature gas stream 26 is generated in the neck section 11a at deposition, but the high- temperature gas stream 26 is cooled by the air blast through the air nozzle 27, and the oxidation of the electron gun 16 can be prevented.

Description

【発明の詳細な説明】 〔発明の目的〕 (産業上の利用分野) 本発明は陰極線管用のバルブのネック部とこのネック部
内に挿入された電子銃のステム部とを溶着するための陰
極線管の製造方法に関する。
Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to a cathode ray tube for welding the neck of a cathode ray tube bulb and the stem of an electron gun inserted into the neck. Relating to a manufacturing method.

(従来の技術) 陰極線管の製造工程において、バルブを封止する工程が
あるが、この封止は、バルブのネック部内の所定位置に
、高精度の位置出しにより電子銃を挿入し、この電子銃
のステム部とネック部との間を外部からバーナにより加
熱し、一体に溶着することにより行なわれる。
(Prior art) In the manufacturing process of cathode ray tubes, there is a process of sealing the bulb.This sealing involves inserting an electron gun into a predetermined position within the neck of the bulb using highly accurate positioning. This is done by heating the stem and neck of the gun from the outside with a burner and welding them together.

上記溶着方法を第2図によって説明する。11は陰極線
管用のバルブで、基台12上に立設されたバルブホルダ
ー13上に乗せられており、そのネック部11aはネッ
クチャック14により予め定められ位置関係で保持固定
される。16は電子銃で、その下部にはステム部17が
一体に設けられており、前記基台12上に立設されたマ
ウントピン18上に所定の位置関係で保持される。この
電子銃1Gは、ガラス製の前記バルブ11が上方からバ
ルブホルダー13上に乗せられることによりそのネック
部り1a内に下方から挿入される。
The above welding method will be explained with reference to FIG. Reference numeral 11 denotes a bulb for a cathode ray tube, which is placed on a bulb holder 13 erected on a base 12, and its neck portion 11a is held and fixed in a predetermined positional relationship by a neck chuck 14. Reference numeral 16 denotes an electron gun, and a stem portion 17 is integrally provided at the bottom of the electron gun, and is held in a predetermined positional relationship on a mount pin 18 erected on the base 12. This electron gun 1G is inserted from below into the neck portion 1a by placing the glass bulb 11 on the bulb holder 13 from above.

20は環状バーナで、第3図で示すように、環状を成す
本体部内周に内方に向う複数のバーナ孔21を設けてお
り、この本体部内周が、第2図で示すように、バルブ1
1のネック部11aの溶着部、すなわち内部に挿入され
た電子銃16のステム部17との接合部と対向するよう
に基台23上に設置される。
20 is an annular burner, and as shown in FIG. 3, a plurality of burner holes 21 facing inward are provided on the inner periphery of the annular main body, and as shown in FIG. 1
It is installed on the base 23 so as to face the welded part of the neck part 11a of the electron gun 1, that is, the joint part with the stem part 17 of the electron gun 16 inserted therein.

この環状バーナ20は第3図および第4図で示すように
、中央部から分割できる構造になっており、溶着作業後
はネック部11aの外周から離れる如く分離後退する。
As shown in FIGS. 3 and 4, this annular burner 20 has a structure that can be separated from the center, and after the welding operation, it separates and retreats away from the outer periphery of the neck portion 11a.

また、この環状バーナ20には燃焼源として例えば天然
ガスの供給管24と酸素の供給管25がそれぞれ連結さ
れており、点火に伴い前記バーナ孔21から燃焼炎を生
じる。
Furthermore, a combustion source such as a natural gas supply pipe 24 and an oxygen supply pipe 25 are connected to the annular burner 20, respectively, and a combustion flame is generated from the burner hole 21 upon ignition.

上述した環状バーナを用いた溶着方法は例えば特開昭6
1−72659号公報にも示されている。
The welding method using the above-mentioned annular burner is described, for example, in Japanese Patent Application Laid-open No. 6
It is also shown in Japanese Patent No. 1-72659.

(発明が解決しようとする問題点) 上記のように、環状バーナ20を用い、ネック部11a
の垂直の中心軸を囲んで炎を加えて加熱する方法では、
第2図で示すように、環状バーナ20から生じた炎がネ
ック部11aと接触した際に高温の上界ガス流26が生
じ、これによってネック部11aの上部が加熱されてし
まう。また、ネック部11aと電子銃16のステム部1
7とが溶着するときは、ネック部11aの内部にもこの
高温ガス流が生じ、電子銃16を高温加熱してしまう。
(Problems to be Solved by the Invention) As described above, by using the annular burner 20, the neck portion 11a
In the method of heating by adding a flame surrounding the vertical central axis of
As shown in FIG. 2, when the flame from the annular burner 20 comes into contact with the neck portion 11a, a high temperature upper boundary gas flow 26 is generated, which heats the upper portion of the neck portion 11a. Furthermore, the neck portion 11a and the stem portion 1 of the electron gun 16 are
7 are welded together, this high-temperature gas flow also occurs inside the neck portion 11a, heating the electron gun 16 to a high temperature.

このようにネック部11aの上部を高温加熱したり、電
子銃16を高温加熱したりすると、前者の場合はネック
部11aに不安定歪が生じ、ネッククラックを発生させ
ることがある。また、後者の場合は、電子銃16を酸化
させ、陰極a管の機能を損うことがある。これらは陰極
線管の封入加工における歩留の低下と品質の低下を1G
き、大きな損失となる。
If the upper part of the neck portion 11a is heated to a high temperature or the electron gun 16 is heated to a high temperature in this way, in the former case, unstable strain may occur in the neck portion 11a, which may cause neck cracks. Furthermore, in the latter case, the electron gun 16 may be oxidized and the function of the cathode a tube may be impaired. These factors reduce the yield and quality of cathode ray tubes by 1G.
This will result in a huge loss.

本発明の目的は、ネック部上部やその内部に位置する電
子銃を高温加熱することなく、ネック部とこのネック部
内に挿入された電子銃のステム部とを溶着して封止する
陰極線管の製造方法を提供することにある。
An object of the present invention is to provide a cathode ray tube that welds and seals the neck and the stem of the electron gun inserted into the neck without heating the upper part of the neck or the electron gun located inside the neck at a high temperature. The purpose is to provide a manufacturing method.

〔発明の構成〕[Structure of the invention]

(問題点を解決するための手段) 本発明による陰極線管の製造方法は、陰極線管用のバル
ブのネック部と、このネック部内に挿入された電子銃の
ステム部とを、ネック部の外周に対向して設けた環状バ
ーナによって溶着するに当り、前記ネック部の環状バー
ナとの対向部より上方の外周面に、エアノズルからの空
気を吹付けながら溶着するものである。
(Means for Solving the Problems) A method for manufacturing a cathode ray tube according to the present invention is such that the neck of a bulb for a cathode ray tube and the stem of an electron gun inserted into the neck are placed opposite to the outer periphery of the neck. When welding with the annular burner provided as above, the welding is performed while blowing air from an air nozzle onto the outer circumferential surface of the neck portion above the portion facing the annular burner.

(作用) 本発明では、環状バーナの上方に設けたエアノズルから
噴出した空気により環状バーナの上方に一秤のエアカー
テンを作り、環状バーナからの炎がネック部の外周面に
当るとぎに生じるガス流の上方への移動を防止し、ネッ
ク部上部の高温加熱を防止する。また、この空気はネッ
ク部の内部に生じる高温ガス流をも冷却するので、電子
銃の酸化を防止する。
(Function) In the present invention, an air curtain is created above the annular burner by air ejected from an air nozzle provided above the annular burner, and the gas generated when the flame from the annular burner hits the outer peripheral surface of the neck part. This prevents the flow from moving upward and prevents the upper part of the neck from heating up to a high temperature. This air also cools the hot gas flow generated inside the neck, thereby preventing oxidation of the electron gun.

(実施例) 以下、本発明の一実施例を図面を参照して説明する。(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

第1図において、基本的な構造は第2図で示したものと
同様であり、パルプ11のネック部11aと、このネッ
ク部り1a内に挿入された電子銃1Gのステム部17と
を溶着すべくネック部11aの外周には環状バーナ20
が設置されている。なお、その他の第2図と同等の部分
には同一符号を付し、説明は省略する。
In FIG. 1, the basic structure is the same as that shown in FIG. 2, and the neck portion 11a of the pulp 11 and the stem portion 17 of the electron gun 1G inserted into the neck portion 1a are welded together. An annular burner 20 is preferably installed on the outer periphery of the neck portion 11a.
is installed. Note that other parts equivalent to those in FIG. 2 are designated by the same reference numerals, and explanations thereof will be omitted.

本発明では、ネック部11aの前記環状バーナ20との
対向部より上方の外周面上に空気を吹付けるべく環状バ
ーナ20上にエアノズル27を設けている。このエアノ
ズル27は環状バーナ20と同様に、環状を成す本体部
を有し、その内周には内方に向う複数の空気孔28が設
けられており、これら複数の空気孔28からネック部1
1aの外周面に向って空気が吹付けられる。
In the present invention, an air nozzle 27 is provided on the annular burner 20 to blow air onto the outer peripheral surface of the neck portion 11a above the portion facing the annular burner 20. Like the annular burner 20, the air nozzle 27 has an annular main body, and the inner periphery thereof is provided with a plurality of air holes 28 facing inward.
Air is blown toward the outer peripheral surface of 1a.

上記構成において、ネック部11aとこのネック部り1
a内に挿入された電子銃16のステム部17とを溶着す
る場合は、環状バーナ20からの炎をネック部11aに
当てて加熱溶融させ、ステム部17と溶着させる。この
際、環状バーナ20からの炎がネック部11aの外周面
に当たることにより、ネック部11aの外周面を上界し
ようとする高温のガス7IL2Gが生じる。しかし、ネ
ック部11aの外周面の上方にはエアノズル27がら空
気が吹付けられ、一種のエアカーテンとして作用してい
るので、高温ガス流26の上昇は防止される。したがっ
て、ネック部11aの上部が加熱されることはなく、ネ
ック部11aの不安定歪およびそれに起因するネックク
ラックの発生を確実に防止する。また、溶着時にネック
部り1a内にも高温ガス流26が生じるが、エアノズル
27からの空気吹付けによりこの高温ガス流′26をも
冷却することになり、電子銃16の酸化を防止すること
ができる。
In the above configuration, the neck portion 11a and the neck portion 1
When welding the stem portion 17 of the electron gun 16 inserted into the tube a, the flame from the annular burner 20 is applied to the neck portion 11a to heat and melt the neck portion 11a, thereby welding the neck portion 17 to the stem portion 17. At this time, the flame from the annular burner 20 hits the outer circumferential surface of the neck portion 11a, thereby generating high-temperature gas 7IL2G that tends to rise above the outer circumferential surface of the neck portion 11a. However, since air is blown from the air nozzle 27 above the outer peripheral surface of the neck portion 11a and acts as a kind of air curtain, the rise of the hot gas flow 26 is prevented. Therefore, the upper part of the neck portion 11a is not heated, and unstable strain of the neck portion 11a and the occurrence of neck cracks caused by the strain are reliably prevented. Further, during welding, a high-temperature gas flow 26 is also generated within the neck portion 1a, but this high-temperature gas flow 26 is also cooled by air blowing from the air nozzle 27, thereby preventing oxidation of the electron gun 16. I can do it.

〔発明の効果〕〔Effect of the invention〕

以上のように本発明によれば、環状バーナによりネック
部とその内部に挿入された電子銃のステム部とを溶着す
るに当り、その溶着部の上方に空気を吹付けるので、ネ
ック部上部の加熱による不安定歪および内部の電子銃の
酸化を防止でき、歩留および品質を共に向上させること
ができる。
As described above, according to the present invention, when welding the neck portion and the stem portion of the electron gun inserted into the neck portion using the annular burner, air is blown above the welded portion. Unstable strain caused by heating and oxidation of the internal electron gun can be prevented, and both yield and quality can be improved.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明による陰極線管の製造方法の一実施例を
示す一部破断正面図、第2図は従来方法を示す一部破断
正面図、第3図および第4図は溶着に用いる環状バーナ
の斜視図である。 11・・陰極線管用のバルブ、11a ・・ネック部、
16・・電子銃、17・・ステム部、20・・環状バー
ナ、27・・エアノズル。
FIG. 1 is a partially cutaway front view showing an embodiment of the method for manufacturing a cathode ray tube according to the present invention, FIG. 2 is a partially cutaway front view showing a conventional method, and FIGS. 3 and 4 show annular shapes used for welding. It is a perspective view of a burner. 11... Valve for cathode ray tube, 11a... Neck part,
16... Electron gun, 17... Stem section, 20... Annular burner, 27... Air nozzle.

Claims (1)

【特許請求の範囲】[Claims] (1)陰極線管用のバルブのネック部と、このネック部
内に挿入された電子銃のステム部とを、ネック部の外周
に対向して設けた環状バーナによって溶着するに当り、 前記ネック部の環状バーナとの対向部より上方の外周面
に、エアノズルからの空気を吹付けながら溶着すること
を特徴とする陰極線管の製造方法。
(1) When welding the neck of a bulb for a cathode ray tube and the stem of an electron gun inserted into the neck using an annular burner provided opposite to the outer periphery of the neck, the annular shape of the neck is A method for manufacturing a cathode ray tube, characterized in that the welding is carried out while blowing air from an air nozzle onto the outer peripheral surface above the portion facing the burner.
JP26728086A 1986-11-10 1986-11-10 Method for manufacturing cathode ray tube Expired - Lifetime JPH0766741B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26728086A JPH0766741B2 (en) 1986-11-10 1986-11-10 Method for manufacturing cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26728086A JPH0766741B2 (en) 1986-11-10 1986-11-10 Method for manufacturing cathode ray tube

Publications (2)

Publication Number Publication Date
JPS63121231A true JPS63121231A (en) 1988-05-25
JPH0766741B2 JPH0766741B2 (en) 1995-07-19

Family

ID=17442641

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26728086A Expired - Lifetime JPH0766741B2 (en) 1986-11-10 1986-11-10 Method for manufacturing cathode ray tube

Country Status (1)

Country Link
JP (1) JPH0766741B2 (en)

Also Published As

Publication number Publication date
JPH0766741B2 (en) 1995-07-19

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