JP3200884B2 - Cutting method of thick glass plate - Google Patents
Cutting method of thick glass plateInfo
- Publication number
- JP3200884B2 JP3200884B2 JP25140191A JP25140191A JP3200884B2 JP 3200884 B2 JP3200884 B2 JP 3200884B2 JP 25140191 A JP25140191 A JP 25140191A JP 25140191 A JP25140191 A JP 25140191A JP 3200884 B2 JP3200884 B2 JP 3200884B2
- Authority
- JP
- Japan
- Prior art keywords
- thick glass
- glass plate
- streak
- streaks
- cut
- 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
- C03B33/00—Severing cooled glass
- C03B33/09—Severing cooled glass by thermal shock
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
- C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
- C03B33/033—Apparatus for opening score lines in glass sheets
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は厚ガラス板の割断方法に
係り、特に板厚が１５〜１９ｍｍ程度又はそれ以上の特
厚ガラス板の割断に好適な方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cutting a thick glass sheet, and more particularly to a method suitable for cutting an extra-thick glass sheet having a thickness of about 15 to 19 mm or more.
【０００２】[0002]
【従来の技術】従来、規格寸法の厚ガラス板を製造する
には、ガラス槽窯内からガラスリボンをゆっくりと引き
上げ、その後、所定長さに割断し、しかる後、厚ガラス
板の両側辺部（耳部）を割断する。2. Description of the Related Art Conventionally, in order to manufacture a thick glass plate having a standard size, a glass ribbon is slowly pulled up from a glass tank kiln, then cut into a predetermined length, and then, on both sides of the thick glass plate. (Ears).
【０００３】この耳部の割断を行なうには、トリンマに
よって切傷状の筋を入れ、次いでこの筋を広げる方向の
押圧力（曲げモーメント）を加えて厚ガラス板を割る。
この押圧力を与えるには、水平姿勢にあり且つ上面に筋
が入った厚ガラス板の該筋の入った部分を下面側から上
方にコロで押し上げる。なお、より大きな割り押圧力
（曲げモーメント）が必要な場合には、さらに、筋より
も厚ガラス板端辺側を上から押えコロで押さえる。In order to cut the ears, a cut-like streak is formed by a trimmer, and then a pressing force (bending moment) in a direction to expand the streak is applied to break the thick glass plate.
In order to apply this pressing force, a portion of the thick glass plate which is in a horizontal posture and has a streak on the upper surface is pushed up by a roller upward from the lower surface side. When a larger splitting pressure (bending moment) is required, the edge side of the thick glass plate rather than the streak is further pressed from above by a pressing roller.
【０００４】[0004]
【発明が解決しようとする課題】厚ガラス板の板厚がき
わめて大きくなった場合には、上記の従来法では筋にそ
って割断されないことが多い。また、割断された厚ガラ
ス板の切口が不揃になるケースが多い。When the thickness of a thick glass plate becomes extremely large, the above-mentioned conventional method is often not cleaved along a line. Further, in many cases, the cut edges of the cut thick glass plate become irregular.
【０００５】[0005]
【課題を解決するための手段】本発明の厚ガラス板の割
断方法は、搬送されている厚ガラス板に該搬送方向に切
傷状の筋を付け、次いで該筋を広げる方向に押圧して該
筋に沿って厚ガラス板を割断する厚ガラス板の割断方法
において、前記筋を付けた後、該筋の部分に液体窒素を
直接噴き付けることにより、該筋の部分を冷却すること
を特徴とするものである。According to the method for cutting a thick glass sheet of the present invention , a cut-like streak is formed on the thick glass sheet being conveyed in the conveying direction, and then the streak is expanded. In the method for cleaving a thick glass plate along the streaks by pressing against the streaks, after the streaks are attached, liquid nitrogen is directly sprayed onto the streaks to cool the streaks. It is characterized by doing.
【０００６】[0006]
【作用】ガラス槽窯内から徐々に引き上げられた厚ガラ
ス板は、数１０℃（例えば５０〜６０℃）程度の温状態
にある。この温状態にある厚ガラス板に搬送方向に筋を
入れた後、該筋の部分に液体窒素を噴き付けて効率的に
冷却すると、該筋の部分に局部的に引張応力が発生す
る。そこで、この筋を広げる方向に押圧力を加えること
により、筋にそってきれいに割断することができる。The thick glass plate gradually pulled up from the inside of the glass tank kiln is in a temperature state of about several tens of degrees Celsius (for example, 50 to 60 degrees Celsius). After a streak is formed in the thick glass sheet in the warm state in the transport direction, liquid nitrogen is sprayed onto the streak portion to efficiently cool the streak portion, and a tensile stress is locally applied to the streak portion. appear. Therefore, by applying a pressing force in a direction in which the streaks are expanded, the cutting can be neatly cut along the streaks.
【０００７】[0007]
【実施例】第１図は実施例方法を示す斜視図である。図
示しないガラス槽窯から引き出された厚ガラス板１は、
所定長さに切断された後、ローラ群２上を水平姿勢にて
搬送される。このローラ群２上の厚ガラス板１の側辺に
そって第１の筋（カッタ線）３と第２の筋（カッタ線）
４を入れる。第２の筋４は第１の筋３よりも厚ガラス板
１の中央側に位置している。FIG. 1 is a perspective view showing an embodiment method. The thick glass plate 1 drawn from a glass tank kiln (not shown)
After being cut to a predetermined length, it is conveyed on the roller group 2 in a horizontal posture. A first streak (cutter line) 3 and a second streak (cutter line) along the side of the thick glass plate 1 on the roller group 2
Insert 4. The second streak 4 is located closer to the center of the thick glass plate 1 than the first streak 3.
【０００８】まず、この第１の筋３に対し液体窒素を第
１のノズル５から噴射し、該筋３の部分を冷却する。次
に、受けコロ６で該筋３の部分を下から持ち上げると共
に、筋３よりも側端辺寄りの部分を押えコロ７で押し下
げ、筋３を押し広げる方向に押圧力（曲げモーメント）
を加え、筋３にそって厚ガラス板を割断する。[0008] First, a pair Shi liquids nitrogen in the first streak 3 injected from the first nozzle 5, to cool the portion of the muscle 3. Next, the portion of the streak 3 is lifted from below by the receiving roller 6, and a portion closer to the side edge than the streak 3 is pressed down by the holding roller 7, and a pressing force (bending moment) is applied in a direction in which the streak 3 is expanded.
And cut the thick glass plate along the streaks 3.
【０００９】その後、第２のノズル８より第２の筋４に
向かって液体窒素を噴射し、第２の筋４の部分を冷却す
る。Thereafter, liquid nitrogen is injected from the second nozzle 8 toward the second streak 4 to cool the portion of the second streak 4.
【００１０】次に、受けコロ９で該筋４の部分を下から
持ち上げると共に、筋４よりも側端辺寄りの部分を押え
コロ１０で押し下げ、筋４を押し広げる方向に押圧力
（曲げモーメント）を加え、筋４にそって厚ガラス板を
割断する。Next, the portion of the streak 4 is lifted from below by the receiving roller 9, and a portion closer to the side edge than the streak 4 is pressed down by the holding roller 10, and a pressing force (bending moment) is applied in a direction in which the streak 4 is expanded. ) Is added, and the thick glass plate is cut along the streaks 4.
【００１１】なお、受けコロ６、９と押えコロ７、１０
はそれぞれシリンダ６ａ、９ａ、７ａ、１０ａによって
上下方向に約１０ｍｍ程度ストロークされる。このシリ
ンダの作動は、厚ガラス板を検知するセンサ（例えばリ
ミットスイッチ）の検知信号に基いて制御するのが好ま
しい。The receiving rollers 6, 9 and the pressing rollers 7, 10
Is vertically stroked about 10 mm by the cylinders 6a, 9a, 7a and 10a, respectively. The operation of the cylinder is preferably controlled based on a detection signal of a sensor (for example, a limit switch) that detects the thick glass plate.
【００１２】１１は前記ノズル５、８へ液体窒素を送る
配管である。なお、この液体窒素の供給量を制御するこ
とにより、厚ガラス板１の冷却の程度を調節することが
できる。また、筋３、４の部分のみを局部的に効率良く
冷却するために、ノズル５、８の下端の厚ガラス板１か
らの高さを２５〜５０ｍｍ程度とするのが好ましい。ノ
ズル５、８は、第２図に示すように、厚ガラス板１の進
行方向上流側に対し１〜１５°程度傾け、ノズル５、８
から噴出された厚ガラス板１に当った液体窒素を進行方
向下流側に飛散させ、筋３、４に沿った部分を均一に冷
却するのが好ましい。Reference numeral 11 denotes a pipe for sending liquid nitrogen to the nozzles 5 and 8. The degree of cooling of the thick glass plate 1 can be adjusted by controlling the supply amount of the liquid nitrogen. Further, in order to efficiently cool only the streaks 3 and 4 locally, it is preferable that the height of the lower ends of the nozzles 5 and 8 from the thick glass plate 1 be about 25 to 50 mm. As shown in FIG. 2, the nozzles 5 and 8 are inclined by about 1 to 15 ° with respect to the upstream side in the traveling direction of the thick glass plate 1.
It is preferable that the liquid nitrogen hitting the thick glass plate 1 jetted from the nozzle is scattered to the downstream side in the traveling direction, and the portions along the streaks 3 and 4 are uniformly cooled.
【００１３】本発明では、ノズル５、８やコロ６、７、
９、１０を例えばボールスクリュなどの適宜の機構によ
って厚ガラス板の幅方向に移動可能としておき、厚ガラ
ス板の寸法の変更に追従できるようにしておくのが好ま
しい。In the present invention, the nozzles 5, 8 and the rollers 6, 7,
Preferably, 9 and 10 are made movable in the width direction of the thick glass plate by an appropriate mechanism such as a ball screw so as to be able to follow a change in dimension of the thick glass plate.
【００１４】上記実施例において、受けコロ６、９は、
筋３、４からそれぞれ０〜２５ｍｍ程度内側に配置する
のが好適である。押えコロ７、１０は筋３、４からそれ
ぞれ２５〜５０ｍｍ程度外側に配置するのが好ましい。In the above embodiment, the receiving rollers 6, 9 are:
It is preferable to arrange each of them about 0 to 25 mm inside the streaks 3 and 4. It is preferable that the holding rollers 7 and 10 are respectively arranged outside the streaks 3 and 4 by about 25 to 50 mm.
【００１５】本発明では、上記の如く、液体窒素によっ
て筋３、４の部分を冷却した後、直ちに割断するのが良
い。これは、冷却後、時間が経つと、厚ガラス板の保有
熱によって冷却した部分が再び温まってしまうからであ
る。In the present invention, as described above, it is preferable to cut the streaks 3 and 4 immediately after cooling the streaks 3 and 4 with liquid nitrogen . This is because the portion cooled by the heat of the thick glass plate reheats over time after cooling.
【００１６】上記実施例では押えコロ７、１０を用いて
いるが、本発明では受けコロ６、９のみを用いても良
い。ただし、特厚ガラス板を割断する場合には、押えコ
ロをも用いるのが好ましい。Although the pressing rollers 7 and 10 are used in the above embodiment, only the receiving rollers 6 and 9 may be used in the present invention. However, when cutting a specially thick glass plate, it is preferable to use a pressing roller.
【００１７】[0017]
【発明の効果】以上の通り、本発明の厚ガラス板の割断
方法によると、厚さが大きい厚ガラス板についても、筋
の部分を効率良く冷却することで搬送方向の筋にそって
正確に割断することができる。 As described above, according to the method for cleaving a thick glass plate of the present invention, even a thick glass plate having a large thickness can be streaked.
By efficiently cooling this portion, it is possible to cut accurately along the line in the transport direction .
【図１】実施例方法を説明する斜視図である。FIG. 1 is a perspective view illustrating an embodiment method.
【図２】ノズルの側面図である。FIG. 2 is a side view of a nozzle.
１ 厚ガラス板 ３、４ 筋 ５、８ ノズル ６、９ 受けコロ ７、１０ 押えコロ １１ 配管 1 Thick glass plate 3, 4 Reinforcement 5, 8 Nozzle 6, 9 Receiving roller 7, 10 Holding roller 11 Piping
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−115035（ＪＰ，Ａ) 特開 昭56−88833（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C03B 33/09 C03B 33/033 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-58-115035 (JP, A) JP-A-56-88833 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C03B 33/09 C03B 33/033
Claims (1)
に切傷状の筋を付け、次いで該筋を広げる方向に押圧し
て該筋に沿って厚ガラス板を割断する厚ガラス板の割断
方法において、前記筋を付けた後、該筋の部分に液体窒
素を直接噴き付けることにより、該筋の部分を冷却する
ことを特徴とする厚ガラス板の割断方法。1. The conveying direction of a thick glass plate being conveyed.
In a method of cutting a thick glass sheet along the streaks by applying a cut-shaped streak to the streaks and then pressing in a direction in which the streaks are spread, after the streaks are formed, a liquid is applied to the streaks. Nitrification
A method for cutting a thick glass plate, comprising cooling the streak portion by directly spraying an element .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25140191A JP3200884B2 (en) | 1991-09-30 | 1991-09-30 | Cutting method of thick glass plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25140191A JP3200884B2 (en) | 1991-09-30 | 1991-09-30 | Cutting method of thick glass plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0585765A JPH0585765A (en) | 1993-04-06 |
| JP3200884B2 true JP3200884B2 (en) | 2001-08-20 |
Family
ID=17222299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25140191A Expired - Fee Related JP3200884B2 (en) | 1991-09-30 | 1991-09-30 | Cutting method of thick glass plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3200884B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7101294B1 (en) | 2021-06-10 | 2022-07-14 | 日本ペイント・インダストリアルコーティングス株式会社 | Aqueous paint composition, coating film and method for manufacturing coating film |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5085345B2 (en) * | 2008-01-15 | 2012-11-28 | 東ソー・クォーツ株式会社 | Glass tube cutting method |
| JP6431686B2 (en) * | 2014-04-22 | 2018-11-28 | 株式会社オハラ | Sheet glass cutting method |
| JP2017014028A (en) * | 2015-06-26 | 2017-01-19 | 日本電気硝子株式会社 | Glass tube cutting method and glass tube cutting device |
-
1991
- 1991-09-30 JP JP25140191A patent/JP3200884B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7101294B1 (en) | 2021-06-10 | 2022-07-14 | 日本ペイント・インダストリアルコーティングス株式会社 | Aqueous paint composition, coating film and method for manufacturing coating film |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0585765A (en) | 1993-04-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |