JP2980957B2 - Method and apparatus for producing glass body for lamp - Google Patents
Method and apparatus for producing glass body for lampInfo
- Publication number
- JP2980957B2 JP2980957B2 JP2220056A JP22005690A JP2980957B2 JP 2980957 B2 JP2980957 B2 JP 2980957B2 JP 2220056 A JP2220056 A JP 2220056A JP 22005690 A JP22005690 A JP 22005690A JP 2980957 B2 JP2980957 B2 JP 2980957B2
- Authority
- JP
- Japan
- Prior art keywords
- stretched
- glass tube
- tube
- glass
- pressing
- 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 - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/04—Re-forming tubes or rods
- C03B23/047—Re-forming tubes or rods by drawing
- C03B23/0473—Re-forming tubes or rods by drawing for forming constrictions
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明はランプ用ガラス体の製造法及びその装置に
関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a glass body for a lamp and an apparatus therefor.
［従来の技術］ 従来、ハロゲン電球用として使用されるガラス体の製
造法は、第３図に示す如くガラス管Ａの絞った部位に同
芯上に開口部Ｃを設け、この開口部に排気管Ｂを溶着す
るものであった。[Prior Art] Conventionally, in a method of manufacturing a glass body used for a halogen bulb, as shown in FIG. 3, an opening C is provided concentrically at a narrowed portion of a glass tube A, and an exhaust is provided in this opening. Tube B was to be welded.
しかしながら、従来の上記形状のものはガラス管と排
気管の溶着部が完成ランプ本体に残る為、溶着部からの
封入ガスのリーク及び溶着部の機械的強度低下という課
題があった。However, the conventional shape has a problem in that the welded portion between the glass tube and the exhaust pipe remains in the completed lamp body, so that the gas leaks from the welded portion and the mechanical strength of the welded portion is reduced.
［発明の解決しようとする課題］ 本発明は従来の技術が有していた上記課題を解消し、
信頼性の高いランプ用ガラス体製造方法及びその装置を
提供するものである。[Problems to be Solved by the Invention] The present invention solves the above-mentioned problems of the prior art,
An object of the present invention is to provide a highly reliable method for manufacturing a glass body for a lamp and an apparatus therefor.
［課題を解決するための手段］ 本発明は、ガラス管の中央部を部分的に加熱して延伸
し、該延伸した部位を押圧して軸方向で管径を急に変化
させ、次いで再度延伸して押圧により生じた延伸した部
位の肉厚の不均一を均一化し、次いで延伸した部位のほ
ぼ中央部で切断するランプ用ガラス体の製造法、ガラス
管の中央部を部分的に加熱して延伸し、該延伸した部位
を押圧して軸方向で管径を急に変化させ、次いで再度延
伸して押圧により生じた延伸した部位の肉厚の不均一を
均一化し、次いで延伸した部位のほぼ中央部で切断し、
排気管を溶着するランプ用ガラス体の製造法及び同芯軸
上に対向して設けられ、ガラス管を回転可能及び延伸可
能に把持するチャックと、該チャックで把持されたガラ
ス管の中央部を部分的に加熱する加熱手段と、加熱され
たガラス管の中央部を押圧し軸方向で管径を急に変化さ
せる押圧手段を有し、ガラス管の中央部を延伸し、押圧
して軸方向で管径を急に変化させたランプ用ガラス体を
製造する装置を提供するものである。[Means for Solving the Problems] In the present invention, a central portion of a glass tube is stretched by partially heating, and the stretched portion is pressed to suddenly change the tube diameter in the axial direction, and then stretched again. A method of manufacturing a glass body for a lamp, in which the thickness of the stretched portion caused by the pressing is made uniform, and then cut at a substantially central portion of the stretched portion, the central portion of the glass tube is partially heated. After stretching, the stretched portion is pressed to suddenly change the tube diameter in the axial direction, and then stretched again to equalize the uneven thickness of the stretched portion caused by the pressing, and then to approximately the stretched portion. Cut at the center,
A method for manufacturing a glass body for a lamp to which an exhaust pipe is welded and a chuck which is provided to face the concentric shaft and rotatably and elongate the glass tube, and a central portion of the glass tube gripped by the chuck. Heating means for partially heating, and pressing means for pressing the central portion of the heated glass tube to suddenly change the tube diameter in the axial direction, extending the central portion of the glass tube, pressing and pressing in the axial direction The present invention provides an apparatus for manufacturing a glass body for a lamp in which the tube diameter is rapidly changed.
本発明におけるランプ用ガラス体はハロゲンランプに
限定されず、特定ガスを封入するタイプのものであれば
広範囲に使用できる。The glass body for a lamp in the present invention is not limited to a halogen lamp, and can be used in a wide range as long as it is a type in which a specific gas is sealed.
本発明に使用するガラス管の組成としては耐熱性に優
れるものが使用される。具体的にはアルミナシリケート
系ガラス、石英が例示される。As the composition of the glass tube used in the present invention, one having excellent heat resistance is used. Specifically, alumina silicate glass and quartz are exemplified.
以下図面に基づいて説明する。 This will be described below with reference to the drawings.
第１図は本発明を実施するための装置の断面図であ
る。図示したようにガラス管１の端部近傍を把持するチ
ャック２は対向して同芯軸上に設けられている。このチ
ャックは同芯軸を回転軸にし同一方向へ同期して回転す
ると共に同芯軸に沿って互いに反対方向に同じ速度で移
動できるようになっている。このチャックには、周方向
に３ヶの爪部３が設けてあり、この爪部を軸に向かって
突出させ、ガラス管の外周面を把持し、ガラス管を回転
させると共に延伸できるようになっている。FIG. 1 is a sectional view of an apparatus for carrying out the present invention. As shown in the drawing, a chuck 2 for gripping the vicinity of the end of the glass tube 1 is provided on the concentric shaft so as to face each other. The chuck is configured to rotate synchronously in the same direction with the concentric axis as a rotation axis and to move at the same speed in opposite directions along the concentric axis. The chuck is provided with three claw portions 3 in the circumferential direction. The claw portions are protruded toward the axis so that the outer circumferential surface of the glass tube can be gripped, and the glass tube can be rotated and stretched. ing.
４は狭幅バーナーで、ガラス管の中央部のみを局部的
に延伸可能な温度に加熱できるようになっている。この
バーナーは紙面に垂直する方向に移動でき、第２図に示
す幅広のバーナー６と交換できるようになっている。Reference numeral 4 denotes a narrow burner, which can heat only the central portion of the glass tube to a temperature at which it can be locally stretched. This burner can be moved in the direction perpendicular to the plane of the paper, and can be replaced with a wide burner 6 shown in FIG.
５は軟化したガラス管の中央部を部分的に押圧しガラ
ス管の直径を軸方向で急に変化させる押圧ロールであ
る。この押圧ロールは、図のように半径方向に肉厚の薄
くなる形状の円盤２枚をシャフトによって互いに連結し
た構造をしている。この押圧ロールは、カーボンで構成
される。また、この押圧ロールはガラス管の回転により
回転するように支持されており、図面には省略したがそ
の回転軸がガラス管即ちチャックの回転軸に対して移動
できるようになっている。ガラス体の製造に当っては、
先ず、所定長さに切断したガラス管１の両端近傍をチャ
ック２の爪部３に把持する。次いでチャック２を250〜5
00rpmの回転数で回転させつつ、狭幅バーナー４でガラ
ス管の中央部のみを局部的に加熱し延伸可能な温度にす
る。次いで両チャックを回転しつつ、ガラス管を延伸す
る方向に移動する。この移動量は自動車のヘッドランプ
に使用するハロゲンランプの場合、片側で約80mmであ
る。これにより、ガラス管の中央部が延伸されるが、直
径は軸方向で緩やかに変化する形状である。次いでガラ
ス管を回転させつつ押圧ロール５を移動しガラス管に当
接し押圧することで軸方向での直径を急に変化させる。
この際ガラス管の肉厚は押圧ロールの内側で若干厚くな
る。次いでこの狭幅バーナー４の代りに広幅バーナー６
を移動させ加熱する。同時にガラス管を延伸する方向に
チャックを再度移動し押圧ロールにより厚くなった肉厚
を均一な肉厚にする。次いでガラス管をチャックより外
し、中央部から切断することによりランプ用ガラス体が
製造される。Reference numeral 5 denotes a pressing roll for partially pressing the central portion of the softened glass tube to rapidly change the diameter of the glass tube in the axial direction. The pressing roll has a structure in which two disks whose thickness is reduced in the radial direction are connected to each other by a shaft as shown in the figure. This pressing roll is made of carbon. The pressing roll is supported so as to be rotated by the rotation of the glass tube, and although not shown in the drawing, its rotating shaft can be moved with respect to the rotating shaft of the glass tube, that is, the chuck. In the production of glass body,
First, the claw portions 3 of the chuck 2 grip the vicinity of both ends of the glass tube 1 cut to a predetermined length. Then, chuck 2 is replaced with 250-5
While rotating at a rotation speed of 00 rpm, only the central portion of the glass tube is locally heated by the narrow burner 4 to a temperature at which stretching is possible. Next, while rotating both chucks, the glass tube is moved in a direction of extending the glass tube. This distance is about 80 mm on one side in the case of a halogen lamp used for an automobile headlamp. As a result, the central portion of the glass tube is elongated, but the diameter has a shape that gradually changes in the axial direction. Next, the pressing roll 5 is moved while rotating the glass tube to abut against and press the glass tube, whereby the diameter in the axial direction is suddenly changed.
At this time, the thickness of the glass tube is slightly increased inside the pressing roll. Then, instead of this narrow burner 4, a wide burner 6
Move and heat. At the same time, the chuck is moved again in the direction in which the glass tube is extended, and the thickness increased by the pressing roll is made uniform. Next, the glass tube is detached from the chuck and cut from the center to produce a glass body for a lamp.
一方、上記工程において、ガラス管中央部を加熱する
際、その加熱範囲を狭くして、延伸を片側で約9mmにす
る外は同様の方法で、中央部の延伸部が約18mmのガラス
管を作成する。次いで、このガラス管を中央部から切断
した後、延伸部に別の排気管を溶着することにより、別
のタイプのランプ用ガラス体が製造される。On the other hand, in the above process, when heating the central portion of the glass tube, the heating range is narrowed, and the stretching is performed in a similar manner except that the stretching is performed to about 9 mm on one side. create. Next, after cutting the glass tube from the center, another exhaust tube is welded to the extending portion to produce another type of glass body for a lamp.
［発明の効果］ 以上説明したように、この発明によれば溶着部が完成
ランプ本体に残らず一体構造となるので、溶着部からの
封入ガスのリーク及び強度低下という課題を解決する事
ができ、ランプの信頼性が向上する。[Effects of the Invention] As described above, according to the present invention, since the welded portion has an integral structure without remaining in the completed lamp body, it is possible to solve the problems of leakage of the sealed gas from the welded portion and a decrease in strength. And the reliability of the lamp is improved.
第１図，第２図は本発明による装置の断面図である。第
３図は従来技術により加工したガラス体の断面図であ
る。 １……ガラス管、２……チャック 4,6……バーナー、５……押圧ロール1 and 2 are sectional views of the device according to the present invention. FIG. 3 is a sectional view of a glass body processed according to the prior art. 1 ... Glass tube, 2 ... Chuck 4,6 ... Burner, 5 ... Pressing roll
Claims (3)
し、該延伸した部位を押圧して軸方向で管径を急に変化
させ、次いで再度延伸して押圧により生じた延伸した部
位の肉厚の不均一を均一化し、次いで延伸した部位のほ
ぼ中央部で切断するランプ用ガラス体の製造法。1. A central portion of a glass tube is partially heated and stretched, the stretched portion is pressed to change the tube diameter abruptly in the axial direction, and then stretched again to be stretched by the pressing. A method for producing a glass body for a lamp in which unevenness in the thickness of a portion is made uniform and then cut at substantially the center of the stretched portion.
し、該延伸した部位を押圧して軸方向で管径を急に変化
させ、次いで再度延伸して押圧により生じた延伸した部
位の肉厚の不均一を均一化し、次いで延伸した部位のほ
ぼ中央部で切断し、排気管を溶着するランプ用ガラス体
の製造法。2. A central portion of the glass tube is partially heated and stretched, the stretched portion is pressed to change the diameter of the tube abruptly in the axial direction, and then stretched again and stretched by pressing. A method of manufacturing a glass body for a lamp, in which unevenness in the thickness of a portion is made uniform, and then the cut portion is cut at substantially the center of the stretched portion, and an exhaust pipe is welded.
回転可能及び延伸可能に把持するチャックと、該チャッ
クで把持されたガラス管の中央部を部分的に加熱する加
熱手段と、加熱されたガラス管の中央部を押圧し軸方向
で管径を急に変化させる押圧手段を有し、ガラス管の中
央部を延伸し、押圧して軸方向で管径を急に変化させた
ランプ用ガラス体を製造する装置。3. A chuck provided on the concentric shaft so as to face the glass tube so as to be rotatable and extendable, and heating means for partially heating a central portion of the glass tube held by the chuck. Has a pressing means for pressing the central portion of the heated glass tube to suddenly change the tube diameter in the axial direction, extending the central portion of the glass tube, pressing and suddenly changing the tube diameter in the axial direction. Equipment for manufacturing glass bodies for lamps.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2-123067 | 1990-05-15 | ||
| JP12306790 | 1990-05-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04119932A JPH04119932A (en) | 1992-04-21 |
| JP2980957B2 true JP2980957B2 (en) | 1999-11-22 |
Family
ID=14851376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2220056A Expired - Fee Related JP2980957B2 (en) | 1990-05-15 | 1990-08-23 | Method and apparatus for producing glass body for lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2980957B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160130170A1 (en) * | 2013-07-17 | 2016-05-12 | Schott Ag | Method of producing glass vials |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4485826B2 (en) * | 2004-03-25 | 2010-06-23 | 東ソー・クォーツ株式会社 | Method for forming seamless quartz glass tube with different diameter parts |
| CN102849935B (en) * | 2012-07-17 | 2014-07-16 | 杭州彭公玻璃灯具有限公司 | Glass light fixture cutting machine |
| CN108147651B (en) * | 2018-01-20 | 2020-06-05 | 永康市松道电器有限公司 | Gear drive type glass tube cutting and bottom sealing machine |
| CN113173693A (en) * | 2021-03-26 | 2021-07-27 | 曲面超精密光电(深圳)有限公司 | Production process of glass bottle for vaccine |
| KR102285561B1 (en) * | 2021-03-29 | 2021-08-03 | 조민호 | Transparent pipe cutting device for pipette |
-
1990
- 1990-08-23 JP JP2220056A patent/JP2980957B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160130170A1 (en) * | 2013-07-17 | 2016-05-12 | Schott Ag | Method of producing glass vials |
| US10442718B2 (en) * | 2013-07-17 | 2019-10-15 | Schott Ag | Method of producing glass vials |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04119932A (en) | 1992-04-21 |
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