44〇54 A7 B7 五、發明説明（1 ) [發明所屬之技術領域] 、本發明係關於由容易失透的熔融玻璃成形具有較厚厚度 之板狀光學玻璃之方法。 [以往之技術] 從流出管將熔融玻璃澆注於固定鑄模，而自該鑄模末端 4拉出成形破璃之方法，已知有如日本特開昭5〇_51516號 公報所記載之方法。該方法係一種在鑄模内之流出管之背 部位置設置堤壩，而對該堤壩施加高頻震動以連續成形玻 璃之方法。特公昭45 - 19987號公報所記載之方法，係一種 以管子引導您融玻璃到鎮模附近，在轉模之一端，以使據 融玻璃流出口和澆注面間之距離儘量接近之狀態澆鑄熔融 玻璃’而仍以使鑄模固定之狀態下連績地拉出玻璃之方 法。另外，在特開昭5 1 - 53 18號公報揭示一種特別是對容 易發生失透之光學玻璃之連續成形方法，即，將黏度2 ◦泊 以下之玻璃以使用兩個堤壩俾使熔融破璃之位置一定之方 法。 經濟部中央標隼扃員工消費合作社印裝 ---------乂 — -------訂 (请先閲讀背面之注意事項再填寫本頁) 特開昭5 2- 105919號公報所記載之方法，係具備導槽模 和鑄模，而以使熔融玻璃導管之下端部接觸或接近於導槽 模之上部為其特徵。此外，將由孔口（ orifice)流出的玻璃 與外部環境遮斷之方法，雖亦有一種使孔口做成雙重管而 從其内部喷出惰性氣體之方法，但此方法亦不能完全防止 失透之發生。 [欲解決之問題] 以往之技術，在成形如同磷酸鹽系玻璃般黏性低’含有 -4- 本紙法尺度適用中國國家標準（CNS ) A4祕（2丨0><297公釐） A7 44〇54γ __Β7 五、發明説明（2 ) (請先閲讀背面之注意事項再填寫本頁} 多量揮發成伤’ τ争別疋在成形容易失透之光學玻璃時，因 發生於孔口之前端開口部之失透，或因玻璃成分之揮發所 產生之異/層附著於流出玻璃表面而被捲入:堯轉玻璃之内 部，以致有大幅降低品質之可能性„ 針對這些問題’如依照上述各習知例之方法，對於成形 本發明之對象，即屬於容易失透之領域之光學玻璃而言， 乃是不夠完美。本發明之方法係提供—種將對於厚度】具 有寬度20以下之比較厚實之板狀且容易失透之光學玻璃， 製造成高品質之方法為目的者。44〇54 A7 B7 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a method for forming a plate-shaped optical glass having a thick thickness from a molten glass that is easily devitrified. [Conventional Technology] A method of pouring molten glass into a fixed mold from an outflow pipe and drawing a broken glass from the end 4 of the mold is known as described in Japanese Patent Application Laid-Open No. 50-51516. This method is a method in which a bank is provided at the back of the outflow pipe in the mold, and high frequency vibration is applied to the bank to continuously form glass. The method described in Japanese Patent Publication No. 45-19987 is a method of guiding you to melt glass by a tube to the vicinity of the town mold. At one end of the rotary mold, the molten glass is cast and melted so that the distance between the molten glass outlet and the pouring surface is as close as possible. Glass' and the method of continuously pulling out the glass with the mold fixed. In addition, Japanese Unexamined Patent Publication No. 5 1-53 18 discloses a continuous forming method for optical glass that is prone to devitrification, that is, a glass with a viscosity of 2 ◦ or less is used to break the glass by using two banks. A certain position. Printed by the Central Ministry of Economic Affairs, Consumer Cooperatives -------------- ------- Order (please read the precautions on the back before filling this page) JP 5 2-105919 The method described in the publication No. 1 includes a guide groove mold and a casting mold, and is characterized in that the lower end portion of the molten glass pipe is in contact with or close to the upper portion of the guide groove mold. In addition, although there is a method of blocking the glass flowing out of the orifice from the external environment and making the orifice into a double tube and ejecting an inert gas from the inside, this method cannot completely prevent devitrification. It happened. [Problems to be solved] In the past, in the past, the formation of phosphate-based glass was as low as 'contained.' Contains -4- The paper method standard is applicable to China National Standard (CNS) A4 (2 丨 0 > < 297 mm) A7 44〇54γ __Β7 V. Description of the invention (2) (Please read the precautions on the back before filling in this page} A large amount of volatilization will cause injuries' τDon’t say 成形 When forming optical glass that is easily devitrified, it occurs at the front end of the aperture The devitrification of the opening, or the difference / layer caused by the volatilization of the glass components, is attached to the surface of the outflow glass: it is turned into the interior of the glass, so that there is a possibility of a significant reduction in quality. The methods of the conventional examples are not perfect for forming the object of the present invention, that is, the optical glass belonging to the field of easy devitrification. The method of the present invention provides a comparison of the width of the thickness of 20 or less Thick plate-like and easily devitrified optical glass is manufactured for high-quality methods.
[解決問題之手段J 本發明人為消除上述習知技術之缺點而專心試驗研究結 果’對容易失透之厚板狀光學玫璃之成形方法中，發現藉 由使孔口如端開口部密接或浸潰於;堯鎮玻璃面，即可防止 發生於上述前端開口部之失透或自玻璃表面揮發所引起異 質層之產生’而作為上述問題之解決手段。 經濟部中央標準局—工消費合作社印製 本發明之中請專利範圍第1項所記載之方法，係將由連接 玻璃溶融爐底部之流出管之孔口流出之熔融玻璃鍀入於設 在孔口下方之通道（chan_nel )狀鑄模之一端部’並自末端部 拉出而成形玻璃之方法，係藉由使上述孔口前端開口部密 接或者浸潰於玻璃面，以防止發生於前端開口部之失透， 且亦防止自玻璃面之揮發所引起異質層之產生者。 本發明所作為對象之領域之光學玻璃，雖可藉坩堝式或 連續式熔融爐來熔融，但並非特別限定於此方式。所謂掛 蜗式係指在單獨之坩堝内俟玻璃之溶融結束時’使玻璃從 -5- 本紙乐尺度適用中國國家標準（CNS ) A4規格（210X297公釐> ~ 4<〇5 4 ? A7 B7 麵濟.部中央標準局員工消費合作.社印製 五、發明説明（3 ) ，出f流出’而於流出結束時再開始熔融玻璃之方法，連 績式係指在熔融裝置之—端連績投入玻璃原料，而使熔融 玻璃連績地自熔融裝置之末端流出之方法。 使熔融玻璃流出之流出管可使用白金或白金合金製之管 狀者。關於此流出管之溫度控制方法，並無特別限定，但 乃以利用直接通電方式之方法較為簡便’溫度控制之精確 度亦佳。 =孔口前端開口部密接或浸潰於澆鑄玻璃面之方法’須 要只質上比澆鑄玻璃表面浸潰於玻璃内部^浸潰之量，須 視玻璃疋種類、欲成形之玻璃厚度而改變，但通常可採用 0至5毫米之範圍，尤其是以1至3毫米為佳。 申請專利範m第2項所記載之方法，係在上述記載之稼融 皮璃之成形方法中，孔口如端開口部係呈逐漸擴展之圓錐 狀。此種結構可使熔融破璃之流動順暢，且使玻璃不會滯 留於孔口前端部，故具有不容易發生失透之功能。上述孔 口<逐漸擴展的圓錐狀之形狀，可依熔融破璃之種類及流 出量而選擇各種形狀，但孔口前端開口部之外徑乃以在流^ 出f内徑疋1.2至3倍之範園内為佳。該外徑若比此範圍 小，則上述作用功能不顯著，而比此範圍大時，破璃之流 動即將偏一邊而造成脈紋之發生原因。 申請專利範圍第3項之方法，係在上述記载之燦融坡璃之 成形方法中，係以在通道狀鑄模内之孔口下部位置設置導. 模，且該導模之玻璃會流出的侧邊之面係呈向前方下降的 略抛物狀傾斜面為其特徵^玻璃流出於該略拋物面狀傾斜 -6 - 本紙乐尺度適用中國國家標準（CNS ) A4C格（210X 297公釐） (請先閱讀背面之注意事磺再填寫本頁) 訂 經濟部中央標準局負工消費合作社印裝 戽 4 Ο 5 4 7 Α7 —____Β7___ 五、發明説明（4 ) 面時’由於玻璃之流動順暢’玻璃不會滯留於特定處，所 以對防止彎入或失透上有效果。此外，上述導模之傾斜面 角度可在10至80度之範圍内選擇適當之值，但較理想為 20至45度之範園。又，上述導模之材質以通常使用於玻璃 成形之材料例如’球墨鑄鐵（duct丨丨e ιΓ〇η)等即夠用，雖並 典須特別加以限定’但基於對略拋物面狀傾斜面之加工 性、溫度控制性、破璃融著性等理由，最好是使用碳。 申請專利範圍第4項所記載之方法，係在上述記載之熔融 玻璃之成形方法中，以空氣冷卻澆鑄在通道狀鑄模之玻璃 表面為其特徵者。就如同磷酸鹽系玻璃或氟磷酸鹽系玻璃 般失透溫度領域較寬之玻璃而言，雖然對成形鑄模澆鑄後 溫度會急激下降，但破璃仍在保持其失透溫度領域之溫 度，此種情形下’澆鍀於鑄模後之玻璃亦會在玻璃中發生 失透之可能性大。惟，藉由根據本案方法而以空氣冷卻剛 流出之玻璃表面，即可使破璃溫度快速由失透溫度領域脫 離而降低。 如上所述’於成形如同氟磷酸鹽系玻璃般特別容易失透 之熔融玻璃之際’如依以往之方法，則對於防止發生於孔 口前端開口部之失透或因玻璃成份之揮發而產生之異質層 被捲入於成形玻璃中之現象仍有其困難，惟根據本案之方 法’亦即，藉由使孔口前端開口部密接或浸漬於凌錡玻璃 面，即可消除上述缺點。 [實施例] 以下，參照圖面說明本發明之光學玻璃之成形方法之一 ^^尺度適用中國國家標率(CNS > A4規格（2丨0><297公釐） (請先閱讀背面之注意事項再填寫本頁) 訂 44054 Α7 Β7 經濟部中央樣隼局員工消費合作杜印製 五、發明説明（5 ) 實施例β 第1圖為本發明之裝置之侧斷面圖。 第2圖為第1圖中Α-Α1線斷面圖。 第3圖為表示通道狀鑄模和設定在鑄模内之導模之斜視 圖。 如第1圖及第2圖所示，熔融玻璃流出管j之上端連接於 未圖示之破璃熔融爐之底部之熔融玻璃流出口，流出管1 之孔口 2之前端開口部係呈逐漸擴展之圓錐狀。而且，孔 口之圓錐狀部分係形成向外侧折返的雙重管結構，其上端 連接有通電用電極板3。在孔口 2之下方，對向於孔口 2而 具有向前方下降的略拋物面狀傾斜面之導模4，係設置在 s又成水平的通道狀讀模5中。通道狀轉模5之兩侧面及下方 a又有錦模加熱用燃机器6。通道狀缚模5之前方設有用於緩 冷玻璃之未圖示之緩冷爐，在所澆入之玻璃面之上面設有 用於冷卻玻璃之送風裝置8。 成形厚板狀光學玻璃時，導模4及鎮模5則在缓冷爐中預 先加熱保溫成預定溫度。其次以未圖示之通電裝置經由通 電用電極板3對流出管1直接通電，將流出管溫度加熱控制 成預定溫度。流出玻璃9係自孔口 2流出，以導模之向前方 下降的略拋物面狀傾斜面接受而澆入鑄模5内。此時，調 整鑄模5之位置’俾孔口前端開口部能密接或浸潰於所澆 入之玻璃面。接著，自送風裝置8以空氣充分冷卻固化澆· 铸破璃1 0之表面後，淹鑄玻璃1 〇被載放在輸送機7而送往 缓冷爐。 -8 - 本紙張尺度適用中國國家標準（CNS )Μ規格（2ΐ〇χ297公釐） (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部中央標準局員工消費合作社印製 440547 at ———----------Β7 ___ 五、發明説明（6 ) [實施例] 以下’說明有關本發明之光學玻璃之成形方法之實施 例。[Means for solving the problem J The inventor focused on experimental research results in order to eliminate the shortcomings of the conventional techniques described above. 'In the method for forming a thick plate-shaped optical rose glass that is easily devitrified, it was found that Immersion in the glass surface of Yaozhen can prevent the occurrence of devitrification in the opening of the front end or the generation of a heterogeneous layer caused by volatilization from the glass surface, as a solution to the above problems. The method described by the Central Bureau of Standards of the Ministry of Economic Affairs-Industrial and Consumer Cooperatives to print the invention described in item 1 of the patent scope is to pour molten glass flowing out of the orifice of the outflow pipe connected to the bottom of the glass melting furnace into the orifice. The method of forming one end of the lower channel (chan_nel) -like mold and pulling it out from the end to form glass is to prevent the front end opening from coming into contact with or immersed in the glass surface to prevent it from occurring in the front end opening. Devitrification, and also prevents the generation of heterogeneous layers caused by volatilization from the glass surface. The optical glass in the field targeted by the present invention can be melted by a crucible or continuous melting furnace, but it is not particularly limited to this method. The so-called snail-type means that at the end of the melting of the glass in a separate crucible, the glass is made from -5- the paper scale to the Chinese National Standard (CNS) A4 specification (210X297 mm > ~ 4 < 〇5 4? A7 B7 Noodles. Consumer Co-operation of the Central Standards Bureau of the Ministry. Printed by the company. 5. Description of the invention (3), "f outflow" and start melting glass at the end of outflow. Succession type refers to the end of the melting device. A method of continuously pouring glass raw materials and continuously flowing molten glass from the end of the melting device. The outflow pipe for the molten glass can be made of platinum or a platinum alloy tube. Regarding the temperature control method of this outflow pipe, and There is no particular limitation, but it is simpler to use the direct current method. 'The accuracy of temperature control is also good. = The method in which the opening at the front end of the orifice is tightly sealed or immersed in the surface of the cast glass' requires only immersion in quality than the surface of the cast glass. The amount of immersion ^ immersion in the glass depends on the type of glass 、 and the thickness of the glass to be formed, but it can usually be in the range of 0 to 5 mm, especially 1 to 3 mm. The method described in item 2 of Lifan m is the method of forming the melted glass as described above. The openings such as the end openings are gradually conical. This structure can make the flow of molten glass break smoothly. And the glass does not stay at the front end of the orifice, so it has the function of preventing devitrification easily. The above-mentioned orifice < gradually expanding cone shape can be selected according to the type of molten glass and the amount of outflow, However, the outer diameter of the opening at the front end of the orifice is preferably within the range of 1.2 to 3 times the inner diameter of the flow fout. If the outer diameter is smaller than this range, the above-mentioned function is not significant, and it is larger than this range. At that time, the flow of broken glass is about to go to one side and cause the veins. The method in the third scope of the patent application is based on the above-mentioned forming method of Canrong slope glass, which is based on the holes in the channel-shaped mold. A guide mold is set at the lower part of the mouth, and the side surface of the glass where the guide mold flows out is characterized by a slightly parabolic inclined surface that descends forward ^ The glass flows out of the slightly parabolic inclined -6-Paper scale Applicable Chinese National Standard (CNS) A4C (210X 297mm) (Please read the notice on the back before filling out this page) Order printed by the Central Standards Bureau of the Ministry of Economic Affairs and Consumer Cooperatives 4 〇 5 4 7 Α7 —____ Β7 ___ V. Description of the invention (4) 'Since the glass flows smoothly' the glass does not stay in a specific place, so it is effective in preventing bending or devitrification. In addition, the angle of the inclined surface of the above guide mold can be selected within a range of 10 to 80 degrees. However, it is ideal to be a fan garden of 20 to 45 degrees. In addition, the material of the above guide mold is usually used for glass forming materials such as' ductile iron (duct 丨 丨 e ιΓ〇η), etc., although the code must be special It is limited, but carbon is preferably used for reasons of workability, temperature controllability, and glass breakability for a slightly parabolic inclined surface. The method described in item 4 of the scope of the patent application is characterized in that the glass surface of the channel-shaped mold is air-cooled and cast in the method for forming a molten glass described above. For a glass with a wide devitrification temperature range like phosphate-based glass or fluorophosphate-based glass, although the temperature of the devitrification temperature drops sharply after the casting mold is cast, the broken glass still maintains its temperature in the devitrification temperature range. In this case, the possibility of devitrification of the glass after pouring into the mold is also high. However, by cooling the glass surface that has just flowed out with air according to the method of the present case, the glass breaking temperature can be quickly decoupled from the devitrification temperature range and reduced. As described above, when forming molten glass that is particularly vulnerable to devitrification like fluorophosphate-based glass as described above, according to the conventional method, it is necessary to prevent devitrification from occurring at the opening at the front end of the orifice or due to volatilization of glass components. The phenomenon that the heterogeneous layer is entangled in the formed glass still has difficulties, but according to the method of the present case, that is, the above-mentioned disadvantages can be eliminated by tightly adhering or immersing the front end opening of the orifice on the glass surface of Ling Ling. [Example] Hereinafter, one of the forming methods of the optical glass of the present invention will be described with reference to the drawings. The ^^ standard is applicable to China's national standard (CNS > A4 specification (2 丨 0 > < 297 mm) (please read the back first) Please pay attention to this page before filling in this page) Order 44054 Α7 Β7 Printed by the Central Government Bureau of the Ministry of Economic Affairs, Consumer Cooperation, Du Print 5. Description of the Invention (5) Example β Figure 1 is a side sectional view of the device of the present invention. The figure is a sectional view taken along the line A-A1 in Fig. 1. Fig. 3 is a perspective view showing a channel-shaped mold and a guide mold set in the mold. As shown in Figs. 1 and 2, the molten glass outflow pipe j The upper end is connected to a molten glass outflow port at the bottom of a glass-breaking melting furnace (not shown), and the opening at the front end of the orifice 2 of the outflow pipe 1 is gradually expanded in a conical shape. Furthermore, the conical portion of the orifice is formed in a direction The upper side of the double-tube structure folded back is connected with an electrode plate 3 for current conduction. Below the orifice 2, a guide die 4 having a slightly parabolic inclined surface facing downward to the orifice 2 is provided at s. In the horizontal channel-shaped reading mold 5, both sides of the channel-shaped rotating mold 5 Below a, there is a burning machine 6 for heating the brocade mold. A slow cooling furnace (not shown) for slow cooling glass is provided in front of the channel-shaped binding mold 5, and the air for cooling the glass is provided on the top of the poured glass surface. Device 8. When forming a thick-plate-shaped optical glass, the guide mold 4 and the ball mold 5 are pre-heated to a predetermined temperature in a slow-cooling furnace. Next, a non-illustrated energizing device is directly connected to the outflow tube 1 through the electrode plate 3 for energization. The current is applied to heat and control the temperature of the outflow tube to a predetermined temperature. The outflow glass 9 flows out from the orifice 2 and is accepted by the slightly parabolic inclined surface that descends forward of the guide mold and is poured into the mold 5. At this time, the temperature of the mold 5 is adjusted. At the position “前端”, the opening at the front end of the hole can be in contact with or impregnated on the glass surface. Next, the surface of the cast glass 10 is fully cooled and solidified by the air supply device 8 and the cast glass 10 is flooded. Put it on the conveyor 7 and send it to the slow-cooling furnace. -8-This paper size applies the Chinese National Standard (CNS) M specification (2ΐ〇χ297mm) (Please read the precautions on the back before filling this page) Order the Ministry of Economy Printed by the Consumer Standards Cooperative of the Central Bureau of Standards 440547 at ------------- Β7 ___ V. invention is described in (6) [Example] The following 'description of embodiments relating to molding of the optical glass of the present invention of a method.
破璃之成形裝置，基本上仍使用與上述本發明之實施例 所說明者同樣之裝置Q 所使用破璃之種類為氟磷酸鹽玻璃[股份有限公司 "OHARA”製，FPL53 (Nd 丨 4387，vd 95 〇)]，通道狀鑄模 5之尺寸為寬度100毫米、長度300毫米、高度50 mm，導模 4之材質為碳材，導模之傾斜面角度為約30度。熔融玻璃 係使用内容積8公升之白金製坩堝。玻璃原料係使用由另 外準備之白金製坩堝所粗熔融之玻璃原料。將玻璃熔融爐 心溫度設定為950 °C ’玻璃原料熔融後再經脫泡、均質化 4玻璃’使其溫度降低至7〇〇，而自内徑7毫米之白金製 管子流出。 此外’孔口前端開口部之内徑為1 7毫米。熔融玻璃9流 出並達到預定之破璃厚度時，調整鑄模5之位置，使前端 開口部浸潰於玻璃中2至3毫米。此時，將所鑄入玻璃面1〇 之3處以來自送風裝置s之空氣加以冷卻。其次，使铸入鎮 模5之玻璃1 〇之厚度維持25毫米而因應所流出玻璃量從鑄模 末端拉出澆鑄玻璃10，並擺放於以定速在緩冷壚中移動之 輸送機7上，邊調整輸送機7之速度邊連續地牽引而成形。 然後如圖4所示，將成形之長形厚板玻璃u沿著^『線 以及c_c，線橫向截斷，並研磨所得到之厚板破璃12的兩端 截斷面’以製成長度200毫米 '寬度16〇毫米、高度25毫 -9- 本紙張尺度適用中國國家標準（CNS ) A4規格（2K)X297^^_j ' ~㈣—— (讀先閲讀背面之注意事項再填寫本頁) 訂 A7 440547 ___B7 五、發明説明（7 ) (請先閱讀背面之注意事項再填寫本頁) 米之試料1。又’由c - c _線沿著在長方向上相隔8 0 0毫米 處之D - D ·線以及E - E '線將長形厚板玻璃1 i截斷，與試料i 相同，製成長度2〇〇毫米、寬度160毫米、高度25毫米之 試料2。 又，在圖4中所標示之箭頭係於成形之際，將前述澆鑄玻 璃1 0拉出之方向。 又，為作為比較例之故，將孔口（ 〇 r i f i c e )前端開口部之 内徑調整為與流出管1相同之内徑尺寸之7毫米，並調整鑄 模5的位置使得澆鑄玻璃1 0的上面位於孔口先端開口部下 方6毫米之位置，其他與上述之實施例相同，將成形之長 形厚板玻璃沿著B - B 1線以及C - C ’線橫向截斷，製成長度 200毫米、寬度160毫米、高度25毫米之試料3。又，由C-C '線沿著在長方向上相隔8 0 0毫米處之D - D '線以及E - E '線 將長形厚板玻璃截斷，製成長度200毫米、寬度160毫 米、髙度25毫米之試料4。 經濟部中央標準局負工消费合作社印製 有關本發明的實施例中所得到之試料（試料1及試料2)， 以及比較例所得到之試料（試料3及試料4 )，各自在該試料 之一端的研磨面上以點光源照光，並由他端之截斷面以放 大透境觀察試料之内部及表面，其結果並如表1所示。 又，表1所示之脈紋、失透及彎入之評估基準為，〇為無 脈紋、〇為有一部份脈紋、▲為有部分無脈紋。又，表1上 雖沒有表示，X則表示整體皆有脈紋。又，A為無失透及彎 入之情形，B為失透及彎入情形在一般的使用上還不至造 成影響之程度，C為略有失透及彎入之情形’ D則為失透及 -10- 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 440547 A7 B7 五、發明说明（ 彎入情形已造成無法使用之程度 表1 號數 實施例 比較例 1 2 3 4 失透 B A D C 彎入 A A D D 脈纹 Θ Θ ▲ 〇 經濟部中央標準局員工消費合作社印裝 此觀察之結果，如表1所示，在比較例的試料3中’有全 體失透及彎入之情形，失透及彎入之評估結果皆為D，比 較例的試料4中，中央部有失透及彎入之情形’失透之評 估結果為C，彎入之評估結果則為〇，由此，比較例試料3 及4中之光學玻璃已為無法使用之品質。另外，本發明之 實施例的試料1中雖可觀察到失透之情形，但為一般使用 上不造成影響之程度，且亦無彎入情形。又，本發明之實 施例試料2中’則無失透及彎入之情形，由是，實施例之 試料1及2 ’同為可作為光學玻璃使用之品質。 進一步’將誠料截斷後所剩下之實施例及比較例之厚板 ，璃在橫方向上割斷，使成適當長度，再以上述方法觀察 橫斷面，在發現有作為光學玻璃無法使用程度之失透及彎 入等缺之邛分標圮，切除或研磨上述缺陷部分，揀選可 作為光學㈣使用之破璃部分。其結果，纟本發明之實施 例中，將揀選所得到之玻璃與試料…合併，其所能狗使 墒重量為’相對於粗溶解之破璃原料(碎玻璃)重量 、％比&例中揀選可作為光學破璃使用之玻读重量 本纸張尺度適 (請先閱讀背面之注意事項再填寫本頁) 、ϊτ -11 - A7 87 054 7 五、發明説明（9 為由，解之玻璃原料（碎坡旬重量 成邢：：，本發明光學破璃成形方法的實施例中，其所 成^玻璃比起比較例之 形顯著減少^ 了發現其失透 '彎入之_情 [發明之效果] 口^據本發明《中請專利範圍第1项所記載之方法，由於孔 邵係密接或浸漬在破璃中，所以，上述前端開 層。、發生失透’亦不會產生破璃成分揮發所引起異質 =申請專利範圍第2項所記裁之方法’由於孔口前端開 前;王逐漸擴展之圓錐狀’因此，玻璃不會滞留在上述 J %開口邵，失透不容易發生。 _申料利_第3讀記載之方法，由於流下於導模 ，略拋物面狀傾斜面之玻璃之流動順暢，所以並"入現 冢，且因破璃不會滯留’亦不會發生失透。 ^申請專利第4項所記載之方法，由於所料之玻 到冷卻，所以可使破璃溫度快速降低到 以下以抑制失透之發生。 ’皿又 [圖面之簡單說明] 第1圖為表示本發明實施例之一之玻璃成 圖。 Ml-置〈侧斷面 第2圖為第1圖中之A-A’線斷面圖。 第3圖為通道狀鑄模和設置在鑄模内之具有略抛 斜面之導模之斜視圖。 」面牧傾 -12 本紙張尺度適用中國國家榡準（CNS ) A4规格（210X2?7公釐） (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部中央襟準局員工消費合作社印災 - - s I I —^1. 4^4 05 4 7 五、發明説明（1Q ) 第4圖為長形厚板玻璃11之上面圖。 [符號之說明] (請先問讀背面之注意事項再填寫本瓦) 丨 *·1Τ 經濟部中央橾隼局員工消費合作社印繁 1 流出管 2 孔口 3 通電用電極板 4 導模 5 通道狀鑄模 6 燃氣器 7 輸送機 8 送風裝置 9 流出玻璃 10 ί堯禱玻璃 1 1 長形厚板玻璃 12 截斷之厚板玻璃 -13 - 本纸杀尺度適用中國國家標準（CNS ) Α4規格（210Χ 297公釐）The glass-breaking molding device basically uses the same device as that described in the embodiment of the present invention. The type of glass-breaking used is fluorophosphate glass [manufactured by " OHARA ", FPL53 (Nd 丨 4387 , Vd 95 〇)], the channel-shaped mold 5 has a width of 100 mm, a length of 300 mm, and a height of 50 mm. The material of the guide mold 4 is a carbon material, and the angle of the inclined surface of the guide mold is about 30 degrees. The molten glass is used A platinum crucible with an internal volume of 8 liters. The glass raw material is a glass raw material which is roughly melted by a separately prepared platinum crucible. The glass melting furnace temperature is set to 950 ° C. After the glass raw material is melted, it is defoamed and homogenized. 4 glass' reduces its temperature to 700, and flows out of a platinum tube with an inner diameter of 7 mm. In addition, the inner diameter of the opening at the front end of the orifice is 17 mm. The molten glass 9 flows out and reaches a predetermined glass breaking thickness At this time, adjust the position of the mold 5 so that the front end opening is immersed in the glass by 2 to 3 mm. At this time, 3 to 10 places of the cast glass surface are cooled by air from the air supply device s. Next, the cast Town mold 5 of The thickness of the glass 10 is maintained at 25 mm, and the cast glass 10 is pulled out from the end of the mold according to the amount of the outflowed glass, and placed on the conveyor 7 that moves in the slow cooling head at a constant speed, while adjusting the speed of the conveyor 7 It is continuously drawn to form. Then, as shown in FIG. 4, the formed long thick plate glass u is cut transversely along the line ^ "and c_c, and the two ends of the thick plate breaking glass 12 are ground. Made of 200mm in length, 160mm in width, 25mm in height-9-This paper size applies to China National Standard (CNS) A4 size (2K) X297 ^^ _ j '~ ㈣—— (Read the precautions on the back before reading Fill in this page again) Order A7 440547 ___B7 V. Description of invention (7) (Please read the precautions on the back before filling this page) Mizhi sample 1. Also 'spaced by c-c _ line along the long direction 8 The D-D-line and E-E 'line at 0 mm cut off the long thick plate glass 1i, which was the same as the sample i, and made the sample 2 with a length of 200mm, a width of 160mm, and a height of 25mm. In addition, the arrows indicated in FIG. 4 are directions in which the aforementioned cast glass 10 is pulled out during molding. For comparison, the inner diameter of the opening at the front end of the orifice (0rifice) was adjusted to 7 mm with the same inner diameter dimension as that of the outflow pipe 1, and the position of the mold 5 was adjusted so that the upper surface of the glass 10 was cast. It is located 6 mm below the opening of the front end of the orifice. Others are the same as the above-mentioned embodiment. The formed long thick plate glass is cut transversely along the line B-B 1 and the line C-C 'to make a length of 200 mm, Specimen 3 with a width of 160 mm and a height of 25 mm. In addition, the CC 'line cuts the long thick plate glass along the D-D' line and E-E 'line separated by 800 mm in the long direction. Sample 4 with a length of 200 mm, a width of 160 mm, and a width of 25 mm. Samples (Sample 1 and Sample 2) obtained in the examples of the present invention, and samples (Sample 3 and Sample 4) obtained in the comparative example were printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. The grinding surface at one end is illuminated with a point light source, and the cut surface at the other end is used to magnify the interior and surface of the sample through trans-observation. The results are shown in Table 1. The evaluation criteria for the veins, devitrification, and bending shown in Table 1 are: 0 is no veins, 0 is a part of veins, and ▲ is a part of veins. Although not shown in Table 1, X indicates that the whole has veins. In addition, A is the case without devitrification and bending, B is the case where devitrification and bending is not affected in general use, and C is the case with slight devitrification and bending. D is lost. Fully -10- This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) 440547 A7 B7 V. Description of the invention (the degree to which the bending situation has made it unusable Table 1 No. Example Comparative Example 1 2 3 4 Devitrification BADC bends into AADD veins Θ Θ ▲ 〇 The results of this observation are printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs, as shown in Table 1. In sample 3 of the comparative example, 'all devitrification and bending In the case, the evaluation results of devitrification and bending are all D. In the sample 4 of the comparative example, there is a case of devitrification and bending at the center. The evaluation result of devitrification is C, and the evaluation result of bending is 0. Therefore, the optical glass in Comparative Examples 3 and 4 is of unusable quality. In addition, although devitrification can be observed in Sample 1 of the example of the present invention, it is to the extent that it does not affect the general use. And there is no bend in. Also, the invention In the sample No. 2 in the example, there is no devitrification and bending. Therefore, the samples Nos. 1 and 2 of the embodiment are both of the quality that can be used as optical glass. Further, the remaining examples after cutting off the original material In the thick plate of the comparative example, the glass was cut in the horizontal direction to an appropriate length, and then the cross-section was observed by the above method. When it was found that there was a lack of devitrification and bending such as the degree that the optical glass was unusable, , Remove or grind the above-mentioned defective part, and pick the broken glass part that can be used as an optical fiber. As a result, in the embodiment of the present invention, the glass obtained by the selection is combined with the sample, and the weight of the fiber can be adjusted to be ' Relative to the weight of the raw dissolved glass (broken glass) weight,% ratio & in the example, select the glass reading weight that can be used as optical glass breaking. The paper size is appropriate (please read the precautions on the back before filling this page), ϊτ -11-A7 87 054 7 V. Explanation of the invention (9 is the reason for the solution of the glass raw material (the weight of the broken slope is Xing: :) In the embodiment of the optical glass breaking method of the present invention, Significant reduction in the shape of the comparative example ^ It was found that the devitrification of the devitrification is not enough. [Effect of the invention] According to the method described in the "Scope of Patent Application No. 1" of the present invention, since the hole-shao system is tightly sealed or immersed in broken glass, the aforementioned front end Opening layer. Devitrification does not occur, and no heterogeneity caused by volatilization of broken glass components will occur = the method described in item 2 of the scope of patent application 'Because the front end of the orifice is opened; Wang gradually expands in a conical shape'. Therefore, glass does not It will stay in the above J% opening, and devitrification is not easy to occur. _Shenlili_The third reading method, because the glass flowing down the guide mold, the slightly parabolic inclined surface of the glass flows smoothly, so "into the cash" Mound, and will not stay because of broken glass, nor devitrification will occur. ^ The method described in item 4 of the application patent, because the expected glass is cooled, can quickly reduce the glass breaking temperature to below to suppress the occurrence of devitrification. [Warehouse] [Simplified description of the drawing] Fig. 1 is a drawing showing a glass according to an embodiment of the present invention. Ml-set <Side section Figure 2 is a sectional view taken along line A-A 'in Figure 1. Fig. 3 is an oblique view of a channel-shaped mold and a guide mold provided with a slightly inclined surface provided in the mold. "Mian Mu Qing-12 This paper size is applicable to China National Standards (CNS) A4 (210X2? 7mm) (Please read the precautions on the back before filling this page). Printed by the Central Consumers Bureau of the Ministry of Economic Affairs and the Consumer Cooperatives. Disaster--s II — ^ 1. 4 ^ 4 05 4 7 V. Description of the Invention (1Q) Figure 4 is the top view of the long thick plate glass 11. [Explanation of Symbols] (Please read the precautions on the back before filling in this tile) 丨 * · 1ΤIndustrial Consumer Cooperatives, Central Government Bureau of the Ministry of Economic Affairs, India Fan 1 Outflow pipe 2 Orifice 3 Electrode plate for power supply 4 Guide mold 5 channels Shaped mold 6 Gas burner 7 Conveyor 8 Air-supply device 9 Outflow glass 10 ί Yao pray glass 1 1 Long thick plate glass 12 Cut-off thick plate glass -13-This paper applies the Chinese National Standard (CNS) Α4 specification ( 210 × 297 mm)