JPS5913638A - Method and apparatus for manufacturing box-shaped cover glass - Google Patents
Method and apparatus for manufacturing box-shaped cover glassInfo
- Publication number
- JPS5913638A JPS5913638A JP11946682A JP11946682A JPS5913638A JP S5913638 A JPS5913638 A JP S5913638A JP 11946682 A JP11946682 A JP 11946682A JP 11946682 A JP11946682 A JP 11946682A JP S5913638 A JPS5913638 A JP S5913638A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- male
- mold
- box
- shaped cover
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
- C03B23/0302—Re-forming glass sheets by bending by press-bending between shaping moulds between opposing full-face shaping moulds
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
-
- 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
- C03B23/24—Making hollow glass sheets or bricks
- C03B23/245—Hollow glass sheets
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)
Abstract
Description
【発明の詳細な説明】
本発明は、平形表示管用カバーガラスの製造方法および
製造装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for manufacturing a cover glass for a flat display tube.
従来、平形表示管のパンケージには、第１図Ａに示すよ
うな、基板１にフランジ付のカバーガラス３を取り令ｊ
けて構成したものと、第１図Ｂに示すような基板１にス
ペーサ５を介して板ガラス４を取り付けて構成したもの
でかある。Conventionally, the pancage of a flat display tube has a cover glass 3 with a flange attached to a substrate 1 as shown in FIG. 1A.
There are two types of structure: one in which a plate glass 4 is attached to a substrate 1 via a spacer 5 as shown in FIG. 1B.
この第１図から明らかなように、前者のパッケージは後
者のパッケージに比へてフロント面の透光視野面域が狭
いのが大きな欠点であり、このため最近では後者のパッ
ケージ構成を採用した表示管が多くなっている。As is clear from Figure 1, the major drawback of the former package is that the front transparent viewing area is narrower than that of the latter package, and for this reason, displays that adopt the latter package configuration have recently been introduced. There are many pipes.
しかしながら、後者の表示管パッケージを製造する場合
、スペーサ５として安価故によく用いられるガラス棒の
寸法精度や面精度の維持が困難であること、丑た低融点
封着ガラスによる封着部２の箇所が多いことなどの点で
、組立作業において多大の手間を要しているのが実情で
ある。However, when manufacturing the latter display tube package, it is difficult to maintain the dimensional accuracy and surface accuracy of the glass rod, which is often used as the spacer 5 due to its low cost, and the parts of the sealing part 2 made of low melting point sealing glass are difficult to maintain. The reality is that the assembly process requires a great deal of effort due to the large number of parts.
そこで、あらかじめスペーサ６のガラス棒とフリント板
ガラス４とを一体化した第２図Ａ、 Ｂに示したよう
な箱形カバーガラス６の供給が強く望ま几でいる。Therefore, it is highly desirable to supply a box-shaped cover glass 6 as shown in FIGS. 2A and 2B in which the glass rod of the spacer 6 and the flint plate glass 4 are integrated in advance.
このような平形表示管用箱形カバーガラスには、板ガラ
スが構成するフロント部７の透光性と透光視野面域の広
いことのほか、各コーナ部すなわちフロント部７とスペ
ーサガラスの構成するフレーム部８の接合部９およびフ
レーム部８同士の接合部１０の気密接着性、ならびにフ
レーム部８の端１ｆｆｉ１１の平坦性などの品質のよい
ことが厳しく要求される。Such a box-shaped cover glass for a flat display tube has the following characteristics: in addition to the translucency of the front section 7 made up of the plate glass and the wide translucent viewing area, each corner section, that is, the frame made up of the front section 7 and the spacer glass It is strictly required that the joints 9 of the parts 8 and the joints 10 of the frame parts 8 be of good quality, such as airtight adhesion and flatness of the ends 1ffi11 of the frame parts 8.
本発明に、以上のような問題に鑑みなされたものであっ
て、平形表示管パッケージの組立における作業性ならび
に品質のよい箱形カバーガラスの製造方法およびその製
造装置全提供するものである。The present invention has been made in view of the above-mentioned problems, and provides a method for manufacturing a box-shaped cover glass and an apparatus for manufacturing the same, which improves workability and quality in assembling a flat display tube package.
すなわち、その要旨は、雌型の凹所内に設けた四辺の溝
の中に配置されるガラス棒と、そのガラス棒の上に片面
周辺全尚接させて載せられる板ガラスと、その板ガラス
の他面周辺」二に枠部頂面部を当接させて載せら几ると
ともに雌型の凹所内壁部と外壁部を嵌合させら扛る雄型
とを、雌型の凹所内に組立てる工程、次にそれらの局部
あるいはそれらの全体を加熱して少なくともガラス棒と
板ガラス周辺部を軟化溶融し、雄型の重みでガラス棒と
板ガラスとの当接部ならびにガラス棒と他のガラス棒と
の突合せ部を溶着すると同時にガラス棒の底面を雌型の
溝平坦底面部で平坦面に成型する工程、次にガラス成型
体が冷却による内部収縮力の発生とともに雌型の丘側壁
面部を収縮移動するようにしてガラス成形体を徐冷する
工程とからなる箱形カバーガラスの製造方法、ならびに
、枠状の土手状部と、その土手状部の内側に平坦な底面
部ケ有する溝部と、その溝底面部につながって穏やかな
登り裾壁部ならびにそｎ、に続く傾斜壁部でなる側壁部
および土手頂面部より低い平坦頂面部を有する丘部とで
構成した雌型と、平坦頂面部の枠状部を有する雄型とを
具備し、雌型の土手内壁部に雄型の土手外壁部が嵌合し
て雌型と雄型とが協働できるようにした箱形カバーガラ
スの製造装置である。In other words, the gist is that a glass rod is placed in grooves on four sides provided in a recess of a female mold, a glass plate is placed on top of the glass rod so that one side of the glass rod is in full contact with the entire periphery of the glass rod, and the other side of the glass rod is The process of assembling the male mold into the recess of the female mold by bringing the top surface of the frame into contact with the outer wall of the female mold and fitting the outer wall of the female mold into the recess; At least the glass rod and the surrounding area of the glass plate are heated locally or in their entirety to soften and melt them, and the weight of the male mold is used to heat the abutment area between the glass rod and the plate glass and the butt area between the glass rod and another glass rod. At the same time as welding, the bottom of the glass rod is molded into a flat surface using the groove flat bottom part of the female mold, and then the glass molded body is caused to contract and move along the hill side wall part of the female mold as internal shrinkage force is generated by cooling. A method for manufacturing a box-shaped cover glass comprising a step of slowly cooling a glass molded body using a frame-shaped bank, a groove having a flat bottom on the inside of the bank, and a groove bottom. A female type consisting of a side wall part with a gently climbing foot wall connected to the base wall, a side wall part with an inclined wall part continuing to the top part, and a hill part with a flat top part lower than the top part of the bank, and a frame-shaped part of the flat top part. This is a box-shaped cover glass manufacturing apparatus, which is equipped with a male die having a shape, and an outer bank wall part of the male die fits into an inner wall part of the female die, so that the female die and the male die can work together.
以下に本発明を実施例をあげて肉面とともに詳しく説明
する。The present invention will be explained in detail below with reference to examples.
〔実施例１〕
第３図から第６図までの肉面が本実施例に関する説明図
である。[Example 1] The meat surfaces shown in FIGS. 3 to 6 are explanatory views relating to this example.
丑ず、斜視図で示した第３図Ｂが箱形カバーガラスのフ
ロント部を構成する板ガラス３０、第３図Ｃがフレーム
部となるガラス角棒４ｏで１七ット４木分の配置図であ
って、材質はともＶこソーダライムガラスである。Figure 3B, which is a perspective view, is a plate glass 30 that constitutes the front part of the box-shaped cover glass, and Figure 3C is a layout diagram of 17 pieces and 4 pieces of glass square rods 4o that form the frame part. The material is V-soda lime glass.
第３図Ａは製造装置である雄型２０、第３図りは同雌型
５０の斜視図であり、拐質はともにグラファイトで耐熱
性を有し、熱１１カ張係数もソーダライムガラスの８５
Ｘ１０／℃に比へて２０×１σ７／℃と小さいものであ
る。FIG. 3A is a perspective view of the male mold 20 and the third diagram is a perspective view of the female mold 50, both of which are manufacturing equipment, and both have graphite and are heat resistant, and have a thermal tensile coefficient of 85 that of soda lime glass.
It is small at 20×1σ7/°C compared to X10/°C.
ここで、両型の構造について詳しく説明する。Here, the structures of both types will be explained in detail.
雄型２０には第４図の要部断面図から明らかなとおり周
縁部分に清って枠状の土手状部２２が形成さｎ、であり
、土手頂面部２３は平坦面にしである。As is clear from the cross-sectional view of the main part in FIG. 4, the male mold 20 has a frame-shaped bank portion 22 formed at its peripheral edge, and the top surface portion 23 of the bank is a flat surface.
寸だ、雌型５０ば、第５図の部分断面図で示したように
、土手状部５１と溝部５２および丘部６３の三つの部分
とからなり、溝部５２の底５６は平坦面、丘状部５３の
側壁６４は、＠、斜面で特にその裾部６５はアール状の
緩やかな登りＵＥｉＣ曲画にして溝底５６につなげであ
る。As shown in the partial cross-sectional view of FIG. The side wall 64 of the shaped part 53 is a slope, and in particular, its bottom part 65 is a rounded, gently ascending UEiC curve that connects to the groove bottom 56.
さらに丘状部５３の平坦頂面部５９は土手状部５１の頂
面部５８の位置より低くしである。Further, the flat top surface portion 59 of the hill-like portion 53 is lower than the position of the top surface portion 58 of the bank-like portion 51.
雄型２０と雌型５ｏの関係は、雄型２０の外壁部２１が
雌型５０の土手内壁部５７と嵌合して両型が協働できる
ようにしである。The relationship between the male mold 20 and the female mold 5o is such that the outer wall portion 21 of the male mold 20 fits into the bank inner wall portion 57 of the female mold 50 so that both molds can cooperate.
さて、第６図に箱形カバーガラスの製造方法を三工程に
分けて示した。すなわち、第６図Ａは製造装置に材料を
セットした状態の断面図、同図Ｂは溶着成形後の断面図
、同図Ｃは冷却後の断面図である。すべて要部のみ示し
である。Now, FIG. 6 shows a method for manufacturing a box-shaped cover glass divided into three steps. That is, FIG. 6A is a sectional view of the material set in the manufacturing apparatus, FIG. 6B is a sectional view after welding and forming, and FIG. 6C is a sectional view after cooling. Only the main parts are shown.
まず、雌型５０の溝５２の各々にガラス角棒４ｏ金入れ
、そのガラス角棒４０の」二ニ片面周辺３１を当接させ
て板ガラス３０を載せ、さらにその板ガラス３０の他面
周辺３２の上に土手頂面部２３全当接させかつ雌型５０
の土手内壁部５７に外壁部２１を嵌合させた雄型２０を
配置して、セラトラ完了する（第６図Ｃ参照）。First, a square glass rod 4o is placed in each of the grooves 52 of the female mold 50, and a sheet glass 30 is placed on the glass rod 40 with the periphery 31 of one side of the glass rod 40 in contact with the periphery 31 of the other side. The top part 23 of the bank is brought into full contact with the female mold 50.
The male die 20 with the outer wall part 21 fitted is placed on the inner wall part 57 of the bank, and the ceratra is completed (see FIG. 6C).
次に、雌型６０の土手状部５１’１８６０℃程度まで局
部的に加熱してその伝熱および輻射熱でガラス角棒４０
と板ガラス３０の周辺部とが軟化し溶融しかけた時に、
雄型２０の重みも生かせてガラス角棒４０と板ガラス３
０との当接部およびガラス角棒４ｏ同士の突合ぜ部とを
溶着すると同時に、箱形カバーガラスのフレーム部端面
となるガラス棒の底面部４１を平坦に成型する（第６図
Ｃ参照）。Next, the bank-like part 51' of the female mold 60 is locally heated to about 1860°C, and the glass square rod 40 is heated by the heat transfer and radiant heat.
When the surrounding area of the plate glass 30 softens and begins to melt,
Taking advantage of the weight of the male mold 20, we created a glass square rod 40 and a plate glass 3.
At the same time, the abutting portions of the square glass rods 4o and the abutting portions of the square glass rods 4o are welded together, and the bottom portion 41 of the glass rod, which will become the end surface of the frame portion of the box-shaped cover glass, is molded flat (see Fig. 6C). .
最後に、全体を徐冷して、冷却による内部収縮力で丘側
壁面部を収縮移動して溝底面部５６から離ｆで留まって
いるガラス成形体６０ｉ取り出す（第６図Ｃ参照）。Finally, the whole is slowly cooled, and the convex wall surface portion is contracted and moved by the internal contraction force caused by cooling, and the glass molded body 60i remaining at a distance f from the groove bottom surface portion 56 is taken out (see FIG. 6C).
このような製造方法において、局部加熱の方法について
は図示はしなかったが、高周波誘導加熱方式を応用して
、雌型５０の周囲から土手状部５１のみを積極的に加熱
する。そうすると、雌型５Ｑの丘側壁裾面部５６のアー
ル面に角が当って土手内壁部５７側に寄せられて入って
いるガラス角棒４０とそのガラス角棒４０に当接し、し
かも雄型２０の重みで押されている板ガラス３００周辺
部とがいち早く加熱軟化し溶融する。In such a manufacturing method, only the bank-shaped portion 51 from around the female mold 50 is actively heated by applying a high-frequency induction heating method, although the local heating method is not shown. Then, the corner of the female mold 5Q comes into contact with the rounded surface of the hill side wall foot surface 56 and comes into contact with the glass square rod 40 that is placed closer to the bank inner wall 57 side, and also the male mold 20. The periphery of the plate glass 300, which is pressed by the weight, is quickly heated and softened and melted.
一方、雌型５ｏの丘状部５３および雄型２０ならびに本
来熱伝導の讐い板ガラス３０の中央部等は温度の上るの
が少し遅れる。On the other hand, the temperature of the hill-shaped portion 53 of the female mold 5o, the male mold 20, and the central portion of the glass plate 30, which is originally a poor conductor of heat, is slightly delayed in rising in temperature.
このような温度差の存在する期間内にガラス角棒４０と
板ガラス３０の当接部およびガラス角棒４０と他のガラ
ス角棒４Ｑの突合せ部をそれぞれ溶着し、同時にガラス
角棒４０の底面部４１全平坦に成形するようにする。During the period when such a temperature difference exists, the abutting portions of the glass square rod 40 and the plate glass 30 and the abutting portions of the glass square rod 40 and the other glass square rod 4Q are welded, and at the same time, the bottom surface of the glass square rod 40 is welded. 41 Make sure to mold completely flat.
以上のような製造装置ならびに製造方法によれば、第１
に、雌型５ｏの丘側壁面部５４が斜面、特にその裾部５
５がアール状の緩やかな登り面に構成されているので、
徐冷工程でガラス成形体６０の内部収縮力による特に初
期の動きが容易となって逃げやすくなるから、割れやひ
びなどの異常のない箱形カバーガラス成形体が得ら几る
。、さらにまた、すでに型駒れした状態にあるので成形
体６０の型からの取り出し作業もきわめて安全かつ容易
に行なえるという利点がある。According to the manufacturing apparatus and manufacturing method as described above, the first
In this case, the hill side wall surface portion 54 of the female mold 5o is sloped, especially the foot portion 5 of the female mold 5o.
5 is configured with a gentle rounded climbing surface,
During the slow cooling process, the initial movement of the glass molded body 60 due to the internal shrinkage force becomes easier and the glass molded body 60 escapes more easily, so that a box-shaped cover glass molded body without abnormalities such as cracks or cracks can be obtained. Furthermore, since the molded body 60 has already been molded, the molded body 60 can be removed from the mold very safely and easily.
ここで、丘側壁面部５４の傾斜は、成形体の冷却収縮移
動全容易にするためにできるだけ急な斜面でない方がよ
いが、一方で表示管のフロントガラスの平坦透光視野面
域が狭奉くなるのであまシ緩くはできない。そこで少な
くとも丘側壁裾部６５をアール状に構成して特に成形体
の内部収縮力の発生と同時に生じる収縮移動をスムーズ
になせるように配慮したものである。本実施例では、傾
斜は垂直軸に対し約１０度程度、裾部のアールｌｄ０．
６ｍｍ程度の半径のアールである。Here, it is preferable that the slope of the hill side wall surface portion 54 is not as steep as possible in order to facilitate the cooling and contraction movement of the molded body, but on the other hand, the flat transparent viewing area of the windshield of the display tube is narrow. I can't make it too loose because it will cause damage. Therefore, at least the hill side wall foot portion 65 is configured in a rounded shape so that the shrinkage movement that occurs simultaneously with the generation of the internal shrinkage force of the molded body can be made smooth. In this embodiment, the inclination is about 10 degrees with respect to the vertical axis, and the radius of the hem is ld0.
It has a radius of about 6 mm.
なお、アール状裾壁部５６と溝底面部５６との境界面に
は成形体の収縮移動を阻止するようなわずかな段差等が
あってはならない。Note that there must be no slight step or the like on the interface between the rounded hem wall 56 and the groove bottom 56 that would prevent the molded body from shrinking and moving.
また、雄型２０の重量全あまり大きくすると、成形体６
０の収縮力が負けて成形体にひびや割れを発生させる原
因となるから、注意を要する。Moreover, if the total weight of the male die 20 is increased too much, the molded body 6
Care must be taken because zero shrinkage force can cause cracks and cracks to occur in the molded product.
第２の利点は、雌型６０の溝底面部６６を平坦に構成し
であるので、成形体６０のフレーム部端面６１が全周に
わたって型通りの平坦面精度に仕上がることである。The second advantage is that since the groove bottom surface 66 of the female die 60 is configured to be flat, the frame end surface 61 of the molded body 60 is finished with the same flat surface precision as the mold over the entire circumference.
このことは、成形体のフレーム部端面６１が基板に接合
さｎて低融点封着ガラスで封止される際、その平坦度が
基板との接合の安定性すなわち封止組立作業の能率にき
わめｆ大きな利益を与えることになる。本実施例での平
坦面の幅は１・８ｍｍである。This means that when the frame end surface 61 of the molded body is bonded to a substrate and sealed with low melting point sealing glass, its flatness is extremely important for the stability of the bond with the substrate, that is, the efficiency of the sealing assembly work. f It will give a big profit. The width of the flat surface in this example is 1.8 mm.
〔実施例２〕
実施例１では、本発明に係わる製造装置を用い高周波訪
導加熱方式を応用した局部加熱方法での製造方法を示し
たが、本実施例では、同製造装置を用いベルトコンベア
式の電熱炉゛ｅ加熱する全体加熱方法での製造方法につ
いて簡単に説明する。[Example 2] In Example 1, a manufacturing method using a local heating method applying a high frequency conductive heating method using the manufacturing apparatus according to the present invention was shown, but in this example, a belt conveyor was manufactured using the same manufacturing apparatus. A manufacturing method using a general heating method using an electric heating furnace will be briefly explained.
第６図人で示した状態にセントしたもの全体を最高８５
０℃程度のベルトコンベア式電気加熱炉に案内して、実
施例１で説明したと同様にしてガラス角棒４０と板ガラ
ス３０との当接部およびガラス角棒４０同士の突合せ部
とを溶着すると同時に、ガラス棒底面４１を平坦に成型
する。その後徐冷して雌型の内部で収縮移動して留まっ
ているガラス成形体６０を取り出す。The total amount of cents in the state shown in Figure 6 is up to 85
When guided to a belt conveyor type electric heating furnace at about 0° C. and welded the abutting portions of the square glass bars 40 and the plate glass 30 and the abutting portions of the square glass bars 40 in the same manner as described in Example 1. At the same time, the bottom surface 41 of the glass rod is molded flat. Thereafter, it is slowly cooled and the glass molded body 60 that has shrunk and moved inside the female mold is taken out.
本実施例では、板ガラス３０の中央部も加熱軟化し溶融
するから雌型の五頂面部６９と関係して成形体フロント
面の透光性の悪いガラス表面に仕」二ることがある。こ
のような場合には、後工程でフロントガラス面の研摩作
業を実施して透光性のよいガラス表面ケもつ箱形カバー
ガラスにする。In this embodiment, since the central portion of the plate glass 30 is also heated and softened and melted, the glass surface of the front surface of the molded article may have poor translucency in relation to the five-top surface portion 69 of the female mold. In such a case, the windshield surface is polished in a post-process to create a box-shaped cover glass with a glass surface that is highly transparent.
なお、本実施例についての図示は省略した。Note that illustration of this embodiment is omitted.
〔実施例３〕
本実施例は、実施例１で説明した雄型において、板ガラ
スとの当接部となる枠状土手頂面の内周角部にアール状
の突起を設けた雄型を用いて箱形カバーガラスを製造す
る場合を示す。[Example 3] This example uses the male mold described in Example 1, in which a rounded protrusion is provided on the inner peripheral corner of the top surface of the frame-like bank that is the contact part with the plate glass. The case where a box-shaped cover glass is manufactured is shown below.
第７図人が、土手頂面内周角部にアール状突起２４を有
する雄型の斜視図である。FIG. 7 is a perspective view of a male type having a rounded projection 24 at the inner circumferential corner of the top surface of the bank.
第７図Ｂは、雌型５０の溝部５２に入ｎたガラス角１ｉ
Ｊ４０の突台せ部にギャップ４２がある場合を示した説
明図で、２このようなギャップ４２がある場合実施例１
で用いた雄型でカバーガラスを製作すると第７図Ｃに示
したように成型後のフレーム部コーナー６２にガラスの
肉不足６３が生じることがある。FIG. 7B shows the glass corner 1i inserted into the groove 52 of the female mold 50.
This is an explanatory diagram showing a case where there is a gap 42 in the protruding pedestal part of J40.
If a cover glass is manufactured using the male mold used in the above, as shown in FIG. 7C, a shortage of glass thickness 63 may occur at the frame corner 62 after molding.
そこで、本実施例の突起２４全有した雄型を用い几ば、
溶融成形工程で板ガラス３００周辺が溶融されかけると
雄型の突起２４部分に当接していた板ガラスの肉３３が
ギャップ４１のあるガラス角棒４ｏのつき合せ部に補給
さｎてガラスの肉不足６３を補なうことができる。Therefore, if the male mold having all the protrusions 24 of this embodiment is used,
When the periphery of the glass plate 300 begins to melt during the melt-forming process, the thickness 33 of the glass plate that was in contact with the protrusion 24 of the male mold is replenished to the abutting part of the square glass rod 4o with the gap 41, resulting in a shortage of glass thickness 63. can be supplemented.
このことは、特にガラス角棒３０全雌型の溝部６２に自
動挿入するために、ガラス角棒３０の寸法を少々短かめ
にして挿入の容易性を優先させた場合に発生しやすい、
ガラス角棒４０同士の突合せ部のギャップによる肉不足
の防止対策として効果のあることを示すものである。This is particularly likely to occur when the size of the glass square bar 30 is made a little short to prioritize ease of insertion in order to automatically insert the glass square bar 30 into the all-female groove 62.
This shows that it is effective as a measure to prevent insufficient thickness due to the gap between the butt portions of the glass square bars 40.
〔実施例４〕
本実施例は、実施例１で説明した雄型において板ガラス
との当接面となる枠状土手頂面上層に突起をめぐらせた
雄型音用いて箱形カバーガラスを製造する場合を示す。[Example 4] In this example, a box-shaped cover glass was manufactured using the male mold described in Example 1, in which projections were arranged around the upper layer of the top surface of the frame-shaped bank, which was the contact surface with the plate glass. Indicates when to do so.
第８図人が、土手頂面上司にテーパー状の突起２５を有
する雄型を用いてセットを組んだ状態を示す要部断面図
である。FIG. 8 is a sectional view of a main part showing a state in which a person has assembled a set using a male mold having a tapered protrusion 25 on the top surface of the bank.
このような雄型を用いれば、板ガラス３０の周辺が加熱
軟化し溶融した場合、溶融した板ガラス３０周縁のガラ
ス肉が雄型と雌型５０の嵌合すきま７０に流入して第９
図に示したようなバリ６４を発生させることがなくなる
。If such a male die is used, when the periphery of the glass plate 30 is heated and softened and melted, the glass flesh around the periphery of the molten glass plate 30 flows into the fitting gap 70 between the male die and the female die 50 and forms the ninth
This eliminates the occurrence of burrs 64 as shown in the figure.
なお、突起２５の形状は、第８図ＢおよびＣに示したよ
うな形状であっても同じような効果がある。Note that the same effect can be obtained even if the shape of the protrusion 25 is as shown in FIGS. 8B and 8C.
〔実施例５〕
本実施例は、実施例３で説明した雄型の枠状土手頂面内
周角部のアール状突起２４と、実施例４で説明した雄型
の枠状土手頂面上筒にめぐらせた突起２５との両方を適
用した雄型音用いて箱形カバーガラスを製造する場合を
示すもので、図示は省略した。[Example 5] In this example, the rounded protrusion 24 on the inner peripheral corner of the top surface of the male frame-shaped bank explained in Example 3 and the rounded protrusion 24 on the top surface of the male frame-shaped bank explained in Example 4 are explained. This figure shows a case in which a box-shaped cover glass is manufactured using a male-type ring that applies both the protrusion 25 and the protrusion 25 wrapped around a cylinder, and illustration thereof is omitted.
このような雄型を用いれば、箱形カバーガラス成形体６
０のフレーム部の突合ぜ部６２にガラスの肉不足６３や
、フロント而周縁にバリ６４を発生さぜ得ないことが、
実施例３および４から容易に理解さ几るであろう。If such a male mold is used, the box-shaped cover glass molded body 6
The fact that there is no shortage of glass thickness 63 in the abutting part 62 of the frame part of 0, and that there is no burr 64 on the front periphery is prevented.
It will be easily understood from Examples 3 and 4.
以上、説明したように本発明は、
（１）雌型の圧側壁面を傾斜状、特にその裾壁面を緩や
かな登り面に構成したので、冷却時ガラス成形体が抵抗
なく収縮移動できるから、成形体にひびや割ｎが発生す
ることがない。As explained above, the present invention has the following features: (1) Since the compression side wall surface of the female mold is formed into an inclined shape, and in particular, the bottom wall surface is formed into a gentle ascending surface, the glass molded product can shrink and move without resistance during cooling. No cracks or splits will occur on the body.
（（８）冷却中に成形体が収縮力で型駒れしでいるから
、最後に成形体を型から取外すことが容易かつ安全に行
なえる。((8) During cooling, the molded product is separated from the mold by the shrinkage force, so that the molded product can be removed from the mold easily and safely at the end.
（９）雌型の溝底部が平坦に構成されているので、成形
体の枠部端面が型通りの精度の高い平坦面に仕上り、表
示管組立の際の基板との封止作業性のよいカバーガラス
を提供することができる。(9) Since the bottom of the female mold groove is configured flat, the end surface of the frame of the molded body is finished as a flat surface with high accuracy as per the mold, making it easy to seal with the substrate when assembling the display tube. A cover glass can be provided.
（４）材料のガラス棒の寸法精度や面精度が少々悪くて
も、加熱して成形されなおされるので、最終に必要な寸
法や面の精度が確保される。つまり、精度要求や材料費
用を従来品よりもアップさせずに精度のよい箱形カバー
ガラスを提供することができる。(4) Even if the dimensional accuracy and surface accuracy of the glass rod used as the material is a little poor, since it can be heated and reshaped, the final dimensional and surface accuracy required will be ensured. In other words, it is possible to provide a highly accurate box-shaped cover glass without increasing accuracy requirements or material costs compared to conventional products.
（（へ）雄型の枠状土手頂面内周角部にアールまたはテ
ーパー等のような曲面または斜面を有する突起を設けで
あるので、成形体のコーナ一部に板ガラスの周辺角から
もガラス肉の補給がなされるから、成形体のフレーム部
に肉不足のない気密性のよい箱形カバーガラスを提供で
きるとともに、製造時におけるガラス棒の自動挿入化も
行ないやすい。((f)) Since a protrusion having a curved surface or slope such as a radius or taper is provided at the inner circumferential corner of the top surface of the male frame-shaped bank, glass can be seen from the peripheral corner of the plate glass at a part of the corner of the molded body. Since the meat is replenished, it is possible to provide a box-shaped cover glass with good airtightness and no shortage of meat in the frame portion of the molded body, and it is also easy to automatically insert the glass rod during manufacturing.
（６）雄型の枠状土手頂面上周部に突起をめぐらせであ
るので、板ガラスの周縁で軟化溶融したガラス肉が雄型
と雌型との嵌会すきまに流入することがないから、フロ
ントガラス面の周縁にバリのない箱形カバーガラスを提
供できる。(6) Since the upper periphery of the frame-shaped embankment of the male mold is surrounded by protrusions, the glass flesh that has softened and melted at the periphery of the plate glass will not flow into the fitting gap between the male mold and the female mold. , it is possible to provide a box-shaped cover glass without burrs on the periphery of the windshield surface.
など、種々の利点のあるきわめて有利な、箱形カバーガ
ラスの製造方法および製造装置である。This is an extremely advantageous method and apparatus for manufacturing a box-shaped cover glass that has various advantages such as the following.
なお、実施例の中では、雌型の丘側壁裾部の形状をアー
ル状としたが、代！ｌｌに緩やかなテーパー状あるいは
その他の形状で成形体の冷却時収縮移動を容易にする形
状であればいかなる形状であってもよい。In addition, in the example, the shape of the female hill side wall hem was rounded, but there is a difference! Any shape may be used as long as it is a gently tapered shape or any other shape that facilitates contraction and movement of the molded product when cooling.
また、実施例３で説明した雄型の枠状土手頂面内周角部
の突起も必ずしもアール状の突起にかかわることなくテ
ーパー状など成形体のコーナ一部に板ガラスの周辺角か
らガラス肉の補給ができるような関係にある形状であｎ
ぽいかなる形状でもよい。In addition, the protrusions on the inner circumferential corners of the top surface of the male frame-shaped bank described in Example 3 are not necessarily related to the rounded protrusions, but may also be tapered or otherwise formed from the peripheral corners of the plate glass to the glass wall. It has a shape that allows for replenishment.
It can be of any shape.
さらにまた、雄型の構造は実施例で示した断面が凹状の
ものにかかわらずたとえば中央部分をくりぬいた枠だけ
のものでもよい。Furthermore, although the male structure has a concave cross section as shown in the embodiments, it may also have a frame with the central portion hollowed out.
なおまた、局部または全体の加熱、方法においても、単
に高周波誘導加熱方式による局部加熱方法や、ベルトコ
ンベア式電熱炉による全体加熱方法にこだわることなく
、その他の加熱方式で局部または全体を加熱する方法で
あればいずれでもよい。In addition, regarding local or whole heating methods, it is not limited to local heating methods using high-frequency induction heating methods or whole heating methods using belt conveyor type electric heating furnaces, but methods of heating local parts or the whole body using other heating methods. Either is fine as long as it is.
ガラス棒もガラス角棒にかかわらずガラス丸棒であって
もよい。The glass rod may be a round glass rod as well as a square glass rod.
第１図は平形表示管の従来のパッケージの断面図で、同
図Ａｉｄフランジ付カバカバーガラス板に取付けたパッ
ケージ、同図Ｂ［スペーサを介してカバー板ガラスを基
板に取付けたパッケージを示したもので、各々内容物と
外部リード線ハ省略しである。
第２図は本発明のきっかけとなった箱形カバ−ガラスに
関する図で、同図Ａは基板に数句けてパッケージとさ几
たものの断面図、同図Ｂは箱形カバーガラスの斜視図で
ある。
第３図ないし第８図が本発明に係わる実施例を説明する
ための図である。すなわち、第３図は箱形カバーガラス
製造のためのガラス材料と製造装置との組合せ関係全説
明した斜視図で、同図Ａは雄型、同図Ｂは板ガラス、同
図Ｃはガラス角棒、同図りは雌型の斜視図である。第４
図および第６（スばそ２ｔぞｎ雄型および雌型の要部断
面図である。
第６図は箱形カバーガラスの製造工程の各状態を説明す
るための要部断面図で、同図Ａは製造装置に月別をセッ
トした状態、同図Ｂはガラス角棒と板ガラス周辺部の加
熱溶着成型後の状態、同図Ｃ−］冷却後取出し前の状５
軛を示す図である。第７図は実施例３を説明するための
図であって、同図人は枠状土手頂面円周角にテール状突
起を有した雄型の斜視図、同図Ｂはガラス角棒同士の突
合せ部にギヤツブができた場合の状態全説明した図、同
Ｉｌ′ｙ、ＩＣは突合せ部の肉不足とその防止対策を説
明するだめの図である。第８図は実施例４′ｆ！：説明
するための部分断面図で、同図人は枠状の土手頂面上周
縁に泊ってテーパ状の突起をめぐらせた雄型を用いてセ
ラ）ｋ組んだ状態を示す図、同図ＢおよびＣは、その他
の形状の突起全めぐらぜた雄型を用いた場合の図である
。
第９図は従来の方法、装置で生じやすいパリ全説明する
ための図で、同図Ａは斜視図、同図Ｂは要部断面図であ
る。
２０・・・・・雄型、２１・・・・・・雄型２０の外壁
部、２２・・・・・・雄型２０の土手状部、２３・・・
・・・雄型２０の土手頂面部、２４・・・・・・雄型２
０の土手頂面内周角部の突起、２５・・・・・雄型２０
の土手頂面上用の突起、３０・・・・・板ガラス、３１
・・・・・・板ガラス３１の片面周辺、３２・・・・・
・板ガラス３１の他面周辺、４０・・・・・・ガラス棒
、４１・・・・・・ガラス棒４１の底面、５０・・・・
・・雌型、５１・・・・・・雌型５０の土手状部、６２
・・・・・・雌型６０の溝部、５４・・・・・・雌型６
０の丘側壁の傾斜面部、５５・・・・・・雌型５０の丘
側壁の裾面部、６６・・・・・・雌型５０の溝底面部、
６ア・・・・・・雌型５０の土手内壁面部、６８・・・
・・雌型５０の土手頂面部、５９・・・・・・雌型５０
の圧潰面部、６０・・・・・・ガラス成形体。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
第２図 ６
第３図 第４図
２θ
第６図
第７図
−１−図Figure 1 is a cross-sectional view of a conventional package for a flat display tube. Figure 1 shows a package attached to a cover glass plate with an Aid flange, and Figure B shows a package with a cover glass plate attached to a substrate via a spacer. The contents and external lead wires are omitted. Figure 2 is a diagram regarding the box-shaped cover glass that triggered the present invention; Figure A is a cross-sectional view of the package and the board mounted several times on the substrate, and Figure B is a perspective view of the box-shaped cover glass. It is. FIGS. 3 to 8 are diagrams for explaining embodiments of the present invention. That is, Fig. 3 is a perspective view that fully explains the combination of glass materials and manufacturing equipment for manufacturing box-shaped cover glasses, in which A is a male type, B is a plate glass, and C is a square glass bar. , the same figure is a perspective view of the female type. Fourth
Figure 6 is a cross-sectional view of the main parts of the male and female molds of the 2-inch box-shaped cover glass. Figure A shows the state in which monthly data is set on the manufacturing equipment, Figure B shows the state after heating and welding of the glass square bar and the surrounding area of the plate glass, Figure C-] Figure 5 shows the state after cooling and before removal.
It is a diagram showing a yoke. FIG. 7 is a diagram for explaining Embodiment 3, in which a person in the same figure is a perspective view of a male type having a tail-like protrusion at the circumferential corner of the top surface of a frame-like bank, and FIG. The diagram Il'y and IC are diagrams that fully explain the situation when a gear is formed at the abutting part.Il'y and IC are diagrams that explain the insufficient thickness of the abutting part and measures to prevent it. FIG. 8 shows Example 4'f! : This is a partial cross-sectional view for explanation, and the same figure shows a state in which a male mold that rests on the upper periphery of the top surface of a frame-shaped embankment and has tapered protrusions is used to assemble it. B and C are diagrams in the case of using a male mold in which protrusions of other shapes are all intertwined. FIG. 9 is a diagram for explaining all the problems that tend to occur in conventional methods and devices; FIG. 9A is a perspective view, and FIG. 9B is a sectional view of a main part. 20...Male mold, 21...Outer wall portion of male mold 20, 22...Bank-like portion of male mold 20, 23...
...Bank top surface of male mold 20, 24...male mold 2
Protrusion on the inner peripheral corner of the bank top surface of 0, 25...Male type 20
Protrusion on top of bank, 30... Plate glass, 31
...... Around one side of plate glass 31, 32...
- Around the other surface of the plate glass 31, 40...Glass rod, 41...Bottom surface of the glass rod 41, 50...
... Female mold, 51 ... Bank-shaped part of female mold 50, 62
...Groove portion of female mold 60, 54...Female mold 6
0 slope side wall of the hill side wall, 55... the bottom surface of the hill side wall of the female mold 50, 66... the groove bottom part of the female mold 50,
6A... Bank inner wall surface part of female mold 50, 68...
...Bank top surface of female mold 50, 59...Female mold 50
Crushed surface portion, 60...Glass molded body. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 6 Figure 3 Figure 4 2θ Figure 6 Figure 7-1-Figure
Claims (1)
ラス棒と、前記ガラス棒の上に片面周辺を当接させて載
せられる板ガラスと、前記板ガラスの他面周辺上に枠部
頂面部を当接させて載せられるとともに前記雌型の凹所
内壁部と外壁部を嵌合させられる雄型とを、前記雌型の
凹所内に組立てる工程、次にそれらの局部あるいはそれ
らの全体全加熱して少なくとも前記ガラス棒と前記板ガ
ラス周辺部を軟化溶融し、前記雄型の重みで前記ガラス
棒と前記板ガラスとの当接部ならびに前記ガラス棒同士
の突合せ部を溶着すると同時に前記ガラス棒の底面を前
記雌型の溝平坦底面部で平坦面に成型する工程、次にガ
ラス成型体が冷却による内部収縮力の発生とともに前記
雌型の圧側壁面部を収縮移動するようにして前記ガラス
成形体を徐冷する工程を有すること全特徴とする箱形カ
バーガラスの製造方法。 （２）雄型の土手頂面内周角部に設けた曲面または斜面
を有する突起により板ガラスの周辺角のガラス肉の一部
分をガラス棒同士の突合せ部に補給す、ることを特徴と
する特許請求の範囲第１項に記載の箱形カバーガラスの
製造方法。 （３）雄型の土手頂面上局部に設けた突起により板ガラ
スの周辺のガラス肉が雌型と雄型との嵌合部へ流入する
のを阻止することを特徴とする特許請求の範囲第１項に
記載の箱形カバーガラスの製造方法。 （４）雄型の土手頂面上周部の設けた突起により板ガラ
スの周辺のガラス肉が雌型と雄型との嵌合部へ流入する
のを阻止することを特徴とする特許請求の範囲第２項に
記載の箱形カバーガラスの製造方法。 （へ）枠状の土手状部と、その土手状部の内側に平坦な
底面部を有する溝部と、その溝底部につながって緩やか
な登シ裾壁部ならびにそれに続く傾斜壁部でなる側壁部
、および土手頂面部よシ低い平坦な頂面部を有する丘状
部とで構成した雌型と、平坦な頂面部をもつ枠状部ケ有
する雄型とを具備し、前記雌型の土手内壁部に前記雄型
の外壁部が嵌合して前記の雌型と雄型とが協働できるよ
うにしたことを特徴とする箱形カバーガラスの製造装置
。 （６）雄型の枠部頂面内周角部に曲面せたは斜面を有す
る突起が設けられていることを特徴とする特許請求のｉ
頭囲第５項に記載の箱形カバーガラスの製造装置。 （７）雄型の枠部頂面上周部に突起が設けられているこ
とを特徴とする特許請求の範囲第５項または第６項に記
載の箱形カバーガラスの製造装置。[Scope of Claims] (1) A glass rod disposed in grooves on four sides provided in a female recess, a glass plate placed on the glass rod with one side of the glass rod in contact with its periphery; assembling a male mold into the recess of the female mold, which is placed on the periphery of the other surface with the top surface of the frame in contact with the male mold, and into which the inner wall of the recess and the outer wall of the female mold are fitted; At least the peripheral parts of the glass rod and the plate glass are heated locally or completely to soften and melt them, and the weight of the male mold is used to soften and melt the abutting parts of the glass rod and the plate glass and the abutting parts of the glass rods. At the same time as welding, the bottom surface of the glass rod is molded into a flat surface using the groove flat bottom surface of the female mold, and then the glass molded body contracts and moves on the pressure side wall surface of the female mold as internal shrinkage force is generated by cooling. A method for manufacturing a box-shaped cover glass, comprising the step of slowly cooling the glass molded body in such a manner. (2) A patent characterized in that a part of the glass thickness at the peripheral corner of the plate glass is supplied to the abutting part between the glass rods by a projection having a curved surface or a slope provided on the inner peripheral corner of the top surface of the male bank. A method for manufacturing a box-shaped cover glass according to claim 1. (3) A protrusion provided on a local top surface of the bank of the male die prevents glass material around the plate glass from flowing into the fitting portion between the female die and the male die. A method for manufacturing a box-shaped cover glass according to item 1. (4) Claims characterized in that a protrusion provided on the upper periphery of the top surface of the bank of the male die prevents the glass thickness around the plate glass from flowing into the fitting part between the female die and the male die. The method for manufacturing a box-shaped cover glass according to item 2. (f) A side wall consisting of a frame-shaped embankment, a groove with a flat bottom inside the embankment, a gently ascending skirt wall connected to the groove bottom, and a sloped wall following it. , and a hill-like part having a flat top surface lower than the top surface of the bank, and a male mold having a frame-like part having a flat top surface, the inner wall of the bank of the female mold comprising: An apparatus for manufacturing a box-shaped cover glass, characterized in that an outer wall portion of the male mold is fitted into the outer wall of the male mold so that the female mold and the male mold can cooperate with each other. (6) Patent claim i, characterized in that a protrusion having a curved or sloped surface is provided on the inner peripheral corner of the top surface of the male frame.
An apparatus for producing a box-shaped cover glass according to head circumference item 5. (7) The apparatus for manufacturing a box-shaped cover glass according to claim 5 or 6, wherein a protrusion is provided on the upper circumference of the top surface of the male frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11946682A JPS5913638A (en) | 1982-07-08 | 1982-07-08 | Method and apparatus for manufacturing box-shaped cover glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11946682A JPS5913638A (en) | 1982-07-08 | 1982-07-08 | Method and apparatus for manufacturing box-shaped cover glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5913638A true JPS5913638A (en) | 1984-01-24 |
Family
ID=14762030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11946682A Pending JPS5913638A (en) | 1982-07-08 | 1982-07-08 | Method and apparatus for manufacturing box-shaped cover glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5913638A (en) |
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| KR19990068730A (en) * | 1999-06-15 | 1999-09-06 | 성필호 | Cover glass used to plat display |
| JP2015512057A (en) * | 2012-01-25 | 2015-04-23 | アップル インコーポレイテッド | Fused glass device housing |
| JP2016081533A (en) * | 2014-10-21 | 2016-05-16 | ティーピーケイ タッチ ソリューションズ（シアメン）インコーポレーテッド | Touch panel and three-dimensional cover plate therefor |
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-
1982
- 1982-07-08 JP JP11946682A patent/JPS5913638A/en active Pending
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| US9946302B2 (en) | 2012-09-19 | 2018-04-17 | Apple Inc. | Exposed glass article with inner recessed area for portable electronic device housing |
| US9886062B2 (en) | 2014-02-28 | 2018-02-06 | Apple Inc. | Exposed glass article with enhanced stiffness for portable electronic device housing |
| US10579101B2 (en) | 2014-02-28 | 2020-03-03 | Apple Inc. | Exposed glass article with enhanced stiffness for portable electronic device housing |
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| JP2016081533A (en) * | 2014-10-21 | 2016-05-16 | ティーピーケイ タッチ ソリューションズ（シアメン）インコーポレーテッド | Touch panel and three-dimensional cover plate therefor |
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