JPS63242936A - Forming of glass pipe - Google Patents
Forming of glass pipeInfo
- Publication number
- JPS63242936A JPS63242936A JP7700587A JP7700587A JPS63242936A JP S63242936 A JPS63242936 A JP S63242936A JP 7700587 A JP7700587 A JP 7700587A JP 7700587 A JP7700587 A JP 7700587A JP S63242936 A JPS63242936 A JP S63242936A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- hole
- glass tubes
- burner
- glass tube
- 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
Links
- 239000011521 glass Substances 0.000 title claims abstract description 99
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 11
- 238000005304 joining Methods 0.000 claims description 2
- 238000005422 blasting Methods 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/20—Uniting glass pieces by fusing without substantial reshaping
- C03B23/207—Uniting glass rods, glass tubes, or hollow glassware
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)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明はガラス管の成形方法に関するもので。[Detailed description of the invention] [Industrial application field] This invention relates to a method for forming glass tubes.
詳細には屈曲した放電路を有する放電ランプのパルプガ
ラス等を製造するためのガラス管の成形方法に関する。In particular, the present invention relates to a method of forming a glass tube for producing pulp glass for a discharge lamp having a curved discharge path.
近年、蛍光ランプはその用途拡大を目脂して種々の形状
のものが提案されている。中でも放電路をＵ字状あるい
はダブルＵ字状に屈曲した放電路を持つ蛍光ランプが、
高光出力を維持しながら小形化できるという利占によっ
て実用化されてきている。In recent years, various shapes of fluorescent lamps have been proposed with the aim of expanding their uses. Among them, fluorescent lamps with a discharge path bent in a U-shape or double U-shape are
It has been put into practical use because of its advantage of being able to be made smaller while maintaining high optical output.
このような蛍光ランプを製造するに際し、最も重要なこ
とは放電路を屈曲させるための屈曲したガラス管を工業
的に効率良く作る技術を確立することである。In manufacturing such fluorescent lamps, the most important thing is to establish a technology for industrially and efficiently manufacturing bent glass tubes for bending the discharge path.
このための有効な一手段として、この発明の出願人は先
に特願昭６０−８８０４４号で２本のガラス管を連通孔
を介して接合するガラス管の成形方法を提案している。As an effective means for this purpose, the applicant of the present invention previously proposed in Japanese Patent Application No. 60-88044 a method of forming glass tubes in which two glass tubes are joined through a communicating hole.
以下、第４図に従いそのガラス管の成形方法を説明する
。The method for forming the glass tube will be explained below with reference to FIG.
■ まず、（Ａ）に示すように２本の直管状のガラス管
１，１をそれぞれホルダー５で保持して近接するように
並設する。(2) First, as shown in (A), two straight glass tubes 1, 1 are each held by a holder 5 and arranged side by side so as to be close to each other.
■ 次に（Ｂｌに示すように２本のガラス管１の端部に
バーナ６の炎が両ガラス管の内側の接合予定箇所に対向
するようにする。(2) Next, as shown in (Bl), the flames of the burner 6 are placed at the ends of the two glass tubes 1 so that they face the intended joint location on the inside of both glass tubes.
■ 続いてバーナ６により接合予定箇所を加熱し。■ Next, burner 6 heats the area to be joined.
局部的に溶融させる。この溶融途中においてｆｃ）に示
すように２本のガラス管１を外方から接触子Ｉで押圧し
てｒＶＪ字状に当接させて溶融箇所を局部的に接着して
溶着部１３を作る。Locally melt. During this melting, as shown in fc), the two glass tubes 1 are pressed from the outside with a contactor I so that they come into contact in an rVJ shape, and the melted parts are locally bonded to form a welded part 13.
■ 次にＤに示すように接触子（７）を取り除き２本の
ガラス管１を元の位置に戻し、再び溶着部１３をバーナ
６で加熱し続ける。このとき、溶融した部分はバーナの
風圧で連通孔１２となって孔があき、その後ガラスの表
面張力で孔が拡大する方向に引張られて孔周縁部に自演
り１１を形成し、この自演りがバーナの風圧で押出され
て（Ｅ）に示すように２本のガラス管１は自演り１１同
士が溶着して連通接合される。(2) Next, as shown in D, the contacts (7) are removed, the two glass tubes 1 are returned to their original positions, and the welded portion 13 is continued to be heated with the burner 6 again. At this time, the molten part becomes a communicating hole 12 due to the wind pressure of the burner, and is then pulled in the direction of expanding the hole by the surface tension of the glass, forming a self-extrusion 11 at the periphery of the hole. is extruded by the wind pressure of the burner, and as shown in (E), the two glass tubes 1 are welded to each other and connected in communication.
ｆＦ）はこの接合された状態を示す図である。fF) is a diagram showing this joined state.
このような方法によればガラス管（１）を曲げることな
（・、２本のガラス管（１）を近接状態で接合して連通
孔叩と形成できるので、Ｕ字状に屈曲した放電路を有す
るような蛍光ランプのガラス管を容易に製造することが
できる。According to this method, the two glass tubes (1) can be joined in close proximity to form a communicating hole without bending the glass tube (1), so a discharge path bent in a U-shape can be formed. A glass tube for a fluorescent lamp can be easily manufactured.
しかしながら上記した方法によれば、ガラス管Ｔ１．ｌ
の接合予定箇所を加熱し局部的に軟化溶融させた後、外
方から接触子（７）で押圧して溶融箇所を接触、溶着し
て溶着部αＪを作る。However, according to the method described above, the glass tube T1. l
After heating the area to be joined to locally soften and melt, the contactor (7) is pressed from the outside to contact and weld the molten area to form a welded part αJ.
ことき、夫々のガラス管（１）はホルダー（５）を支点
として夫々のガラス管［１１の軸心（！ｔ Ｘｌ）同
士がＶ字状になるように動くため、夫々のガラス管ｆｉ
＋同士は軸心がＶ字状で溶着される。At this time, each glass tube (1) moves with the holder (5) as a fulcrum so that the axes (!t
+ are welded together with their axes in a V-shape.
接触子（７）を取り去ると夫々のガラス管（１）はホル
ダー（５）を支点として元の平行状態になるよう復元力
が働くが、溶着部（１３が既にＶ字状に溶着されており
溶着部０が軟化状態にあってもガラスの粘性のためガラ
ス管（１）の軸心同士が平行になるまでに完全には復元
できない。When the contactor (7) is removed, a restoring force acts on each glass tube (1) to return to its original parallel state with the holder (5) as a fulcrum, but the welded portion (13) has already been welded in a V-shape. Even if the welded part 0 is in a softened state, due to the viscosity of the glass, it cannot be completely restored until the axes of the glass tube (1) become parallel to each other.
従って９次の連通孔ａ３開孔もガラス管＋１１の軸心同
士が少しＶ字状のまま行なわれ、完成されたガラス管１
１＋は第１図（Ｆ）に示すように夫々のガラス管（１）
の軸心（：ｘ １− ｘ １）がＶ字状を呈した状態で
接合される。Therefore, the 9th communication hole a3 was also opened while the axes of the glass tube +11 remained slightly V-shaped, resulting in the completed glass tube 1.
1+ indicates each glass tube (1) as shown in Figure 1 (F).
The axes (: x 1 - x 1) are joined in a V-shape.
このように形成されたガラス管（１）は、以後の製造工
程で特に図示はしないがガラス管ｆｉ＋の開口端を閉塞
する基板に載置し、互い同士を封着したり。In the subsequent manufacturing process, the glass tube (1) thus formed is placed on a substrate that closes the open end of the glass tube fi+, and is sealed together.
再度ガラス管ｉｌｌをホルダーによって掴むような作業
を実施する場合、平行なガラス管（１）のそれに比べて
作業を難しくする問題があった。When the glass tube ill is to be held again by the holder, there is a problem in that the work is more difficult than that for the parallel glass tube (1).
一方、ガラス管（１）をチャックしているホルダー（５
）は第４図に示すｆＡ）、 （Ｂ）工程ではガラス管（
１］が動かないよう保持しながら工程（Ｃ）で接触子（
７）を押圧したとき可動する。また接触子（７）を取り
去った後は、ガラス管ｉｌ＋同士が自重で落下しないよ
うに保持しながらガラス管（１）同士が平行に復元でき
るよう可動性も備えていなければならない。このためホ
ルダー＋５１を含めたヘッド構造が複雑になる問題もあ
った。On the other hand, the holder (5) that is chucking the glass tube (1)
) is shown in Fig. 4 fA), and in the (B) process, the glass tube (
1] While holding the contactor (
7) Moves when pressed. Furthermore, after the contactor (7) is removed, it must also be movable so that the glass tubes (1) can be restored to be parallel to each other while holding the glass tubes il+ so that they do not fall due to their own weight. Therefore, there was a problem that the head structure including the holder +51 became complicated.
この発明に係るガラス管の成形方法は、ガラス管同士を
連通孔を介して接合するガラス管の成形方法において、
接合するガラス管同士を近接して並設し９両ガラス管の
連通孔開孔予定箇所を加熱軟化させ両ガラス管内にピン
チャ−ヘッドを挿入し軟化部分のガラス管内側より両ガ
ラス管をはさむようにピンチャ−ヘッドで強制的にピン
チして溶着させ、しかるのちバーナーで溶Ｍ部を吹き破
りつつ連通孔外側周縁に押し出された肉同士を接合させ
るようにしたものである。A method for forming a glass tube according to the present invention is a method for forming a glass tube in which glass tubes are joined to each other through a communication hole.
Place the glass tubes to be joined in close proximity to each other, heat and soften the areas where the communication holes are planned to be made in both glass tubes, insert a pincher head into both glass tubes, and pinch both glass tubes from the inside of the glass tubes at the softened portion. The weld is forcibly pinched with a pincher head, and then the melted M portion is blown away with a burner, and the pieces of meat extruded to the outer periphery of the communication hole are joined together.
この発明の製造方法においては、ガラス管が軟化するこ
とによって延び易くなるという性質を利用しなされたも
ので、開孔予定箇所となる軟化部分だけをピンチャーヘ
ッドで強制的に両ガラス管の軸心を結ぶ中心線方向に押
し出し、この押し出された部分が接触し相互に溶着され
る。したがって近接したガラス管の軸心を動さないで両
ガラス管を溶着できる。The manufacturing method of this invention takes advantage of the property that glass tubes become easier to elongate when softened, and the pincher head is used to forcibly remove only the softened portions where the holes are to be formed so that the axes of both glass tubes are aligned. The extruded parts come into contact and are welded together. Therefore, both glass tubes can be welded together without moving the axes of the adjacent glass tubes.
次に、この発明による成形方法を第１図を基に説明する
。Next, the molding method according to the present invention will be explained based on FIG.
■ （Ａ、）に示すように外径１５．５酊、肉厚０．８
ｍ藁。■ As shown in (A,), the outer diameter is 15.5 mm and the wall thickness is 0.8 mm.
m straw.
長さＩＱＱ翼厘のソーダライムガラス管１１）を２個用
意し、夫々のガラス管＋ｌ＋同士は１．５１ｍｌの隙間
を有するように近接して並設するようにホルダー（５）
で保持固定する。Prepare two soda lime glass tubes 11) with a length of IQQ, and place them in a holder (5) so that they are juxtaposed close to each other with a gap of 1.51 ml.
Hold and secure.
■ 次に（Ｂｌに示すように連通孔開孔箇所となる夫々
のガラス管ｆｉ＋の下部開放端ｑ１１より１０１１ｍの
位置にバーナー（６）先端が当るようにバーナー（６）
をセットし、同所をバーナー（６）で加熱軟化させる。■ Next, install the burner (6) so that the tip of the burner (6) hits a position 1011 m from the lower open end q11 of each glass tube fi+, which will be the opening point of the communication hole (as shown in Bl).
, and heat and soften the same area with a burner (6).
■ 加熱箇所が十分軟化した後、ガラス管（１）の下ｇ
Ｔ！開放端αυより一対のピンチャーヘッド（８）の内
の一方を挿入し、（Ｃ）に示すように加熱軟化箇所をピ
ンチャーヘッド（８）で強制的にピンチして両ガラス管
１１）同士の加熱軟化箇所を接触溶着させ溶着部αＪを
形成する（このピンチャ−ヘッド（８）は両ガラス官（
１）の軸心（Ｊｌ ”＋）を結ぶ中心線位置でピンチさ
れ、最大限ピンチしたときのヘッド（８）間隙が１．２
目になるようにあらかじめセットしである）。■ After the heating point has sufficiently softened, press the bottom g of the glass tube (1).
T! Insert one of the pair of pincher heads (8) from the open end αυ, and as shown in (C), forcibly pinch the heated softened part with the pincher head (8) to heat both glass tubes 11). The softened parts are contact welded to form a welded part αJ (this pincher head (8) is attached to both glass plates (
1) is pinched at the center line connecting the axis (Jl ”+), and the head (8) gap when pinched to the maximum is 1.2
(It is set in advance so that it looks like this)
■ ピンチャーヘッド（８）をガラス管（１）より取り
去り、引き続き溶着部ａ３をバーナー（６）で加熱溶融
させる。この溶融した部分は、まずバーナ（６ンの風圧
で連通孔α２となる孔が明き１次にガラスの表面張力の
影響で連通孔α２が拡大する方向に引っ張られ、連通孔
（１３の周縁部に自涜りαυを形成し、この自涜りαυ
がバーナ（６）の風圧で外側に押し出されるため、２本
のガラス管（１）は夫々の押し出された自涜りαυ同士
が溶着し、外部と気密に連通接合される（Ｅｌはこの接
合された状態を示す図である。(2) Remove the pincher head (8) from the glass tube (1), and then heat and melt the welded part a3 with a burner (6). This molten part first opens the hole that will become the communicating hole α2 due to the wind pressure of the burner (6), and is then pulled in the direction in which the communicating hole α2 expands due to the influence of the surface tension of the glass, and the periphery of the communicating hole (13 form self-blasphemy αυ in the part, and this self-blasphemy αυ
is pushed outward by the wind pressure of the burner (6), so the two glass tubes (1) are welded to each other by their extruded autoclave αυ, and are connected to the outside in an airtight manner (El is connected to this joint). FIG.
■ 次に、バーナ（６）を消して両ガラス管（１１が変
形しな（なるまで冷却させて接合管を完成する（Ｆはこ
のガラス管を示し、連通孔ａａの孔径はガラス管（１）
の軸心方向で約１０１１１の長径を有する楕円孔であっ
た）。■ Next, turn off the burner (6) and cool both glass tubes (11) until they are not deformed to complete the jointed tube (F indicates this glass tube, and the hole diameter of the communicating hole aa is )
It was an elliptical hole with a major axis of about 10111 in the axial direction).
この実施例では、ガラス管ｉｌｌ同士の開孔予定箇所は
、バーナー（６）で加熱され、軟化状態にあるうちにガ
ラス管ｆｉｌ内に挿入したピンチャーヘッド（８）によ
り強制的に軟化部分だけが突出するように伸ばされピン
チされる。従って両ガラス管１１）は工程■のホルダー
（５）で保持固定されたままの状態で軸心Ｃ２，、−ｘ
、）を動さないで接触、溶着できる。In this embodiment, the locations where holes are to be formed between the glass tubes are heated with a burner (6), and while they are in a softened state, only the softened portions are forcibly removed using a pincher head (8) inserted into the glass tubes. It is stretched and pinched so that it sticks out. Therefore, both glass tubes 11) are held and fixed in the holder (5) in step ①, and their axes C2, -x
, ) can be contacted and welded without moving.
この結果連通孔は、ガラス管＋１１の軸心（！＋−ｘ１
）を動さないで溶着部［３をさらにバーナー（６）で溶
融させバーナー（６）の風圧で開孔できる。As a result, the communication hole is located at the axis of the glass tube +11 (!+-x1
) without moving the welded part [3] can be further melted with a burner (6) and a hole can be opened by the wind pressure of the burner (6).
また、ガラス管ｆｉ＋同士を接触、溶着させる際ガラス
管（１）の軸心を動ずことが不用となるので、当然復元
も不用となり、ガラス管同士をチャックするホルダー（
５）は工程の最初から最後までガラス管同士を保持固定
するだけでよ（ホルダー（５）構造が簡易になる。なお
、第２図に示すようにガラス管（１）の開孔予定箇所は
ガラス管＋１１の内側だけでな（。Also, since it is not necessary to move the axis of the glass tube (1) when bringing the glass tubes fi+ into contact and welding, it is naturally unnecessary to restore the glass tubes, and the holder (
For 5), all you have to do is hold and fix the glass tubes together from the beginning to the end of the process (the holder (5) structure is simplified. As shown in Figure 2, the planned hole opening location in the glass tube (1) is Only inside the glass tube +11 (.
外側からもバーナー（６りで加熱し軟化させることもで
きる。このような方法によれば、ガラス管（１）の肉厚
が厚くなっても加熱、軟化の時間を遅くしないで済む。It is also possible to heat and soften from the outside with a burner. According to such a method, even if the glass tube (1) becomes thick, the heating and softening times do not need to be delayed.
上記■〜■に示される製造方法によって接合されたガラ
ス管（１）は、第３図ＦＡ）〜（Ｃ）に示すように。The glass tubes (1) bonded by the manufacturing method shown in (1) to (3) above are as shown in FIGS. 3FA) to (C).
ガラス管（１）の端部１Ｌ１１を加熱溶着した後、成形
してＵ字状、あるいはＵ字、逆Ｕ字を交互に連続させた
形状に成形して１例えば蛍光ランプのような放電灯のガ
ラス管として利用できる。また接合する前のガラス管［
１＋の一端を予め試験管の如く閉塞してお（か、あるい
はＵ字状に折曲してお（ことは。After heating and welding the end 1L11 of the glass tube (1), it is formed into a U-shape, or a shape in which U-shapes and inverted U-shapes are alternately continued. Can be used as a glass tube. Also, the glass tube before joining [
Pre-close one end of the 1+ like a test tube (or bend it into a U-shape).
この発明を実施する上において何ら妨げとはならない。This does not pose any hindrance to the implementation of this invention.
また、接合するＨのガラス管１］）同士は外径の異なる
異径品同士でも良い。Further, the H glass tubes 1]) to be joined may have different outer diameters.
さらにまた、ガラス管＋１１の端部αυの閉塞はガラス
管（１）自体を加工するのではなく、別体のガラス。Furthermore, the end αυ of the glass tube +11 is closed not by processing the glass tube (1) itself, but by using a separate piece of glass.
セラミックあるいは金属で形成される閉塞体（図示せず
）を接着剤で封着して密閉することも可能である。It is also possible to seal and seal with an adhesive a closure body (not shown) made of ceramic or metal.
この発明は以上説明したように、ガラス管同士を連通孔
を介して接合するガラス管の成形方法において、ガラス
管同士を近接して並設し１両ガラス管の連通孔開孔予定
箇所を加熱軟化させ９両ガラス管内にピンチャ−ヘッド
を挿入し軟化部分のガラス管内側より両ガラス管をはさ
むようにピンチャーヘッドで強制的にピンチして接触溶
着させ。As explained above, the present invention is a method for forming glass tubes in which glass tubes are joined through a communication hole, in which the glass tubes are arranged in close proximity to each other and the area where the communication hole is planned to be formed in one glass tube is heated. After softening, a pincher head was inserted into both glass tubes, and both glass tubes were forcibly pinched from inside the softened portion of the glass tubes to weld by contact.
こののぢこの溶着部をバーナーで開孔するとともに、こ
の際押し出された肉同士を溶着し開孔周縁を気密に接合
するようにしたので、溶着から接合完成までガラス管の
軸心を動さないで成形できる。This welded part was opened with a burner, and the extruded flesh was welded together to airtightly join the periphery of the opening, so the axis of the glass tube could be moved from welding to completion of the joint. Can be molded without
従って、接合されたガラス管の軸心同士がＶ字状に曲っ
てしまうような不良がなくなる。また成形機の構造が簡
単になるなど、その工業的価値は大きい。Therefore, defects such as the axes of the joined glass tubes being bent into a V-shape are eliminated. It also has great industrial value as it simplifies the structure of the molding machine.
第１図はこの発明の一実施例を説明する工程図。
第２図および第３図は他の実施例を示す工程図で。
第２図は工程部分図、第３図はＵ字管成形り開園。
第４図は従来技術を説明する工程図である。
図中、１１）はガラス管、（６）はバーナー、（８）は
ピンチャーヘッド、αＪは溶着部、 Ｔ１３は連通孔、
Ｋｌ）、 （６２）はバーナー。
なお、各図中、同一符号は同一または相当部分を示す。FIG. 1 is a process diagram illustrating an embodiment of the present invention. FIGS. 2 and 3 are process diagrams showing other embodiments. Figure 2 is a partial diagram of the process, and Figure 3 is the opening of the U-shaped tube. FIG. 4 is a process diagram illustrating the prior art. In the figure, 11) is a glass tube, (6) is a burner, (8) is a pincher head, αJ is a welded part, T13 is a communication hole,
Kl), (62) is a burner. In each figure, the same reference numerals indicate the same or corresponding parts.
Claims (1)
気密に連通接合させるガラス管の成形方法において、並
設されたガラス管の側部同士を近接して対向させ、次い
でガラス管の連通孔開孔予定箇所をバーナーにより加熱
軟化させたのち、両ガラス管内に一対のピンチャーヘッ
ドの内の一方づつを挿入し、このピンチャーヘッドで上
記夫々のガラス管の加熱軟化箇所を内側より押し出しピ
ンチして溶着させ、こののちこの溶着箇所をバーナーで
溶融しながらバーナーの風圧で開孔し連通孔を形成する
とともに、この連通孔の外側周縁に肉を押し出し、この
肉により相互の連通孔周縁を接合させたことを特徴とす
るガラス管の成形方法。In a method of forming glass tubes in which the side parts of glass tubes arranged in parallel are connected to the outside in an airtight manner through a communication hole, the side parts of the glass tubes arranged in parallel are brought close to each other and face each other, and then the glass tubes are After heating and softening the area where the communicating hole is planned to be opened using a burner, insert one of the pair of pincher heads into both glass tubes, and use this pincher head to push out the heated and softened area of each glass tube from the inside. After pinching and welding, this welded part is melted with a burner and opened by the wind pressure of the burner to form a communicating hole, and the flesh is pushed out to the outer periphery of the communicating hole, and this flesh forms the periphery of the mutual communicating hole. A method for forming a glass tube characterized by joining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62077005A JPH0645469B2 (en) | 1987-03-30 | 1987-03-30 | Glass tube molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62077005A JPH0645469B2 (en) | 1987-03-30 | 1987-03-30 | Glass tube molding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63242936A true JPS63242936A (en) | 1988-10-07 |
| JPH0645469B2 JPH0645469B2 (en) | 1994-06-15 |
Family
ID=13621648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62077005A Expired - Lifetime JPH0645469B2 (en) | 1987-03-30 | 1987-03-30 | Glass tube molding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0645469B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03171527A (en) * | 1989-11-29 | 1991-07-25 | Toshiba Lighting & Technol Corp | Manufacture of fluorescent lamp |
| US5599368A (en) * | 1991-06-06 | 1997-02-04 | Prolux Maschinenbau Gmbh | Device and process for the production of multiple-fold, single-tube glass vessels |
| EP1187162A2 (en) * | 2000-09-04 | 2002-03-13 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing a fluorescent lamp |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6054933A (en) * | 1983-09-06 | 1985-03-29 | Mitsubishi Electric Corp | Forming of glass tube |
-
1987
- 1987-03-30 JP JP62077005A patent/JPH0645469B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6054933A (en) * | 1983-09-06 | 1985-03-29 | Mitsubishi Electric Corp | Forming of glass tube |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03171527A (en) * | 1989-11-29 | 1991-07-25 | Toshiba Lighting & Technol Corp | Manufacture of fluorescent lamp |
| US5599368A (en) * | 1991-06-06 | 1997-02-04 | Prolux Maschinenbau Gmbh | Device and process for the production of multiple-fold, single-tube glass vessels |
| EP1187162A2 (en) * | 2000-09-04 | 2002-03-13 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing a fluorescent lamp |
| US6568217B2 (en) * | 2000-09-04 | 2003-05-27 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing fluorescent lamp |
| EP1187162A3 (en) * | 2000-09-04 | 2005-11-30 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing a fluorescent lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0645469B2 (en) | 1994-06-15 |
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| Date | Code | Title | Description |
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| EXPY | Cancellation because of completion of term |