201200442 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種使用於搬送液晶顯示器或〇LED (Organic Light Emitting Display，有機發光顯示器）照明設 備等中的厚度極薄之玻璃板之玻璃板搬送方法、玻璃板搬 送装置及玻璃板製品之製造方法。 【先則技術】 於專利文獻1中’揭示有使用於液晶顯示器中之玻璃 板’其厚度為0.7 mm以下。又，於專利文獻2中，揭示有 使用厚度為0.2 mm以下之極薄的玻璃板之平板顯示器。 作為搬送上述之較薄的玻璃板之裝置，已知有如專利文 獻1所述使用水平之輥式輸送機的裝置。又，亦已知有如 專利文獻3所述’藉由設置於機器人頂端之吸附握持部吸 附且保持玻璃板，藉由機器人搬送玻璃板之裝置。 先前技術文獻 專利文獻 專利文獻1 :曰本國專利特開2007-315922號公報 專利文獻2 :曰本國專利特開2005-1 15087號公報 專利文獻3 :曰本國專利特開2007-158170號公報 【發明内容】 發明所欲解決之問題 然而，玻璃板之剛性與玻璃板之厚度之3乘成正比。因 此’若欲搬送玻璃之厚度較薄之玻璃板、尤其是厚度為 〇·2 mm以下之玻璃板，則與厚度為〇 7 mm之玻璃板相比， 155793.doc 201200442 玻璃板之剛性非常低，故而產生下述之問題。 即’如專利文獻1所述，於欲使用厚度為07 mm之玻璃 板搬送用之輥式輸送機來搬送玻璃之厚度較薄之玻璃板， 尤其是厚度為0.2 mm以下之玻璃板之情形時，會產生如下 之情形：因其剛性較低故而如圖6所示，於輥式輸送機1之 輥2、2、2...之間，玻璃板G之頂端G1因自身重量而向下 方垂下，該頂端G1會搭在未圖示之輥上而破損。因此，若 欲藉由厚度為0.7 mm之玻璃板搬送用之輥式輸送機丨來搬 送玻璃厚度較薄之玻璃板，尤其是厚度為〇2 下之玻 璃板G，則無法直接使用該輥式輸送機1。於搬送玻璃之厚 度較溥之玻璃板，尤其是厚度為〇·2 mm以下之玻璃板G之 情形時，會產生如下之問題：該輥式輸送機丨中必需進行 使輥2、2、2…間之距離極接近之大幅度的設備變更。 又，若欲藉由專利文獻3中之機器人，高速搬送玻璃厚 度較薄之玻璃板’尤其是厚度為0.2 mm以下之玻璃板，會 產生如下之問題：有時’因其剛性較低故而於搬送中使玻 璃板上產生裂紋，從而使玻璃板裂開。 本發明係馨於上述之情況而完成者’其目的在於提供一 種即便是較薄的玻璃板亦可穩定地進行搬送之玻璃板搬送 方法、玻璃板搬送裝置及玻璃板製品之製造方法。 解決問題之技術裝置 本發明為了達成上述目的’提供一種以具有與玻璃板之 搬送方向平行的分量之軸為中心、使玻璃板彈性變形為彎 曲狀而搬送玻璃板之玻璃板搬送方法。 155793.doc -4- ⑧ 201200442 本發明為了達成上述目的，提供一種包含彎曲機構之玻 璃板搬送裝置，該彎曲機構以具有與玻璃板之搬送方向平 行的分量之軸為中心、使玻璃板彈性變形為彎曲狀。 本發明為了達成上述目的’提供一種以相對於玻璃板之 搬送方向平行之軸為中心、使玻璃板彈性變形為彎曲狀而 搬送玻璃板之玻璃板搬送方法。 本發明為了達成上述目的，提供一種包含彎曲機構之玻 璃板搬送裝置，該彎曲機構係以相對於玻璃板之搬送方向 平行之軸為中心、使玻璃板彈性變形為彎曲狀。 本發明為了達成上述目的’提供一種玻璃板製品之製造 方法’其包含溶融玻璃原料而製造熔融玻璃之熔融步驟、 將熔融玻璃成形為玻璃帶之成形步驟、對成形後之玻璃帶 進行緩冷之緩冷步驟、切斷經缓冷之玻璃帶製成玻璃板之 切斷步驟以及對所切斷之玻璃板進行搬送及捆包之取板步 驟，該玻璃板製品之製造方法中，於切斷步驟或取板步驟 中之玻璃板搬送中使用本發明之玻璃板搬送方法。 本發明為了達成上述目的，提供一種玻璃板製品之製造 方法’其包含熔融玻璃原料而製造熔融玻璃之熔融步驟、 將溶融玻璃成形為玻璃帶之成形步驟、對成形後之玻璃帶 進行緩冷之緩冷步驟、切斷經緩冷之玻璃帶製成玻璃板之 切斷步驟以及對所切斷之玻璃板進行搬送及捆包之取板步 驟’該玻璃板製品之製造方法中，於切斷步驟或取板步驟 中之玻璃板搬送中使用本發明之玻璃板搬送裝置進行玻璃 板搬送。 155793.doc 201200442 根據本發明，藉由彎曲機構使玻璃板以具有與玻璃板之 搬送方向平行的分量之轴為中心而彈性變形為彎曲狀，藉 此與搬送方向對應之玻璃板之剛性提高。 根據本發明，藉由彎曲機構使玻璃板以相對於玻璃板之 搬送方向平行之軸為中心而彈性變形為彎曲狀，藉此與搬 送方向對應之玻璃板之剛性提高。 藉此’即便是較薄的玻璃板’本發明亦可穩定地進行搬 送。 再者，以具有與玻璃板之搬送方向平行的分量之軸為中 心、使玻璃板彈性變形為彎曲狀之含義係，與以除與玻璃 板之搬送方向正交之軸以外的軸為中心、使破璃板彈性變 形為彎曲狀之含義相同。 本發明之玻璃板搬送方法較佳為，使上述破璃板彈性變 形為波狀而進行搬送。 本發明之玻璃板搬送裝置之上述彎曲機構較佳為，使上 述玻璃板彈性變形為波狀。 藉由使玻璃板彈性變形為波狀，進一步提高了與搬送方 向對應之玻璃板之剛性，故而可更進一步穩定地搬送玻璃 板。 本發明之玻璃板搬送方法適合於玻璃厚度較薄之玻璃 板，尤其是厚度為0.2 mm以下之玻璃板之搬送。 藉由對玻璃之厚度較薄之玻璃板，尤其是厚度為〇2 mm 以下之玻璃板應用本發明’提高了玻璃板搬送時之剛性， 故而即便是上述之極薄的玻璃板亦可良好地進行搬送。 155793.doc -6· 201200442 本發明之玻璃板搬送方法較佳為，於應變點以下之環境 溫度下搬送上述玻璃板。 本發明之玻璃板搬送裝置較佳為，於上述玻璃板之厚度 為0.2 mm以下之情形時，上述玻璃板之最大彎曲量為〇 2 mm~4 mm 〇 於本發明之玻璃板搬送裝置之一態樣中，較佳為，上述 彎曲機構係包含複數個輥之輥式輸送機，且於上述輥之兩 端部及/或中途部設置有凸緣狀構件，該凸緣狀構件具有 較該輥之直徑更大之直徑且載置玻璃板之邊緣部及/或中 途部。 於設置於輥之兩端部及/或中途部的凸緣狀構件上載置 玻璃板之邊緣部及/或中途部並加以搬送，藉此可使玻璃 板以沿搬送方向之軸為中心彎曲而搬送。又，於搬送厚度 為0.7 mm之玻璃板的現有設備之輥式輸送機中，藉由僅於 輥之兩端部及/或中途部設置凸緣狀構件之小設備改造， 可穩定地搬送玻璃厚度較薄之玻璃板，尤其是厚度為〇2 mm以下之玻璃板，而不發生上述之專利文獻1中之異常。 本態樣之玻璃板搬送裝置較佳為，於上述玻璃板之厚度 為0.2 mm以下之情形時’因上述凸緣狀構件所致之上述玻 璃板之最大彎曲量為0.2 mm〜4 mm。 即便是厚度為0.2 mm以下之玻璃板，亦可以上述之少量 之彎曲量獲得足夠之剛性，但若最大彎曲量小於〇 2 mm， 則無法獲得搬送時必需之剛性，於玻璃板上產生彎曲並發 生專利文獻1中之異常。另一方面，即使最大彎曲量超過4 155793.doc 201200442 mm，厚度為0.2 mm以下之玻璃板亦不會破損。然而，於 最大彎曲量超過4 mm之狀態下，利用兩端設置有凸緣狀構 件之輥式輸送機弩曲搬送玻璃板之情形時，支撐玻璃板之 兩端部的凸緣狀構件與支撐玻璃板最大程度地彎曲時之大 致中央部的輥之中央部分的周速差會變大，玻璃板上容易 留下因滑移而產生之損傷故不佳。即，藉由將最大脊曲量 設為4 mm以下，可防止因輥之周速差而產生之損傷之發 生因此，於藉由報式輸送機搬送厚度為〇.2 mm以下之玻 璃板之情形時，較佳為，以最大彎曲量處於〇 2 mm〜4 mm 之範圍之方式，設定凸緣狀構件間之距離（支撐點間距 離）、及與輥直徑相應之凸緣狀構件之直徑。 於本發明之玻璃板搬送裝置之另一態樣中，較佳為，上 述f曲機構包含於2點以上之點吸附、握持上述玻璃板之 吸附裝置。 本態樣之對象並非親式輸送機之搬送形態，而是包含吸 附機構之機器人搬送形態、或起重機搬送形態β藉由吸附 機構於2點以上握持玻璃板’可使玻璃板以具有與玻璃板 之搬送方向平行的分量之軸為中心、以彎曲狀彈性變形。 本發明之玻璃板搬送裝置較佳為’於應變點以下之環境 溫度下搬送上述玻璃板。 本發明之玻璃板搬送方法及玻璃板搬送裝置既適用於搬 送單片之玻璃板之形態’又適用於一面自輥抽出成親狀繞 捲之带狀之玻璃板一面進行搬送之形態。 發明之效果 155793.doc 201200442 本發明之玻璃板搬送方法、玻璃板搬送裝置及玻璃板製 品之製造方法係以具有與玻璃板之搬送方向平行的分量之 軸為中心、使玻璃板彈性變形為彎曲狀而搬送玻璃板。 或，以相對於玻璃板之搬送方向平行之軸為中心、使玻璃 板彈性變形為彎曲狀而搬送玻璃板。藉此，玻璃板係以剛 性較平坦之狀態進一步提高之狀態搬送，因此，即便是例 如厚度為0.2 mm以下之較薄的玻璃板，亦可穩定地進行搬 送。 【實施方式】 以下’按照隨附圖式對本發明之玻璃板搬送方法、玻璃 板搬送裝置及玻璃板製品之製造方法的較佳之實施形態進 行詳細說明《再者，於本說明書中，「上方」意味著垂直 上方，「下方」意味著垂直下方。 於圖1中，表示有藉由輥式輸送機1〇使玻璃板G彈性變形 為彎曲狀而搬送之形態。 如圖1所示，玻璃板G係以相對於箭頭A所示之玻璃板g 之搬送方向平行的軸P為中心、彈性變形為彎曲狀而搬 送。即’玻璃板G係以具有與玻璃板G之搬送方向A平行的 分量之軸P為中心而彈性變形為彎曲狀並搬送。此時，玻 璃板G係於應變點以下之環境溫度下搬送，因此搬送後玻 璃板G上不會留有應變，亦不會變形。 再者’由輥式輸送機10所搬送之玻璃板G可為切斷加工 成規定之矩形狀之皁片玻璃板’亦可為一面自棍被抽出一 面搬送之带狀玻璃板。又，玻璃板G亦可為成為面板之玻 155793.doc 201200442 璃板、貼附有薄膜之玻璃板、表面經塗層之玻璃板等於作 為基材之玻璃板上附有附屬物者《進而，與玻璃板G之搬 送方向A平行之軸P係指相對於玻璃板g之搬送方向a呈±5。 以内之軸。又，以下說明之如圖丨〜圖5所示之玻璃板G中， 為了通俗易懂地說明彈性變形為彎曲狀之狀態，誇張地表 示其狀態。 於輥式輸送機10中’用於使玻璃板G彈性變形為弯曲狀 之彎曲機構係設置於各輥12、12…之兩端部的圓盤狀之凸 緣狀構件14、14。該凸緣狀構件14、14為了載置玻璃板^ 之長度方向邊緣部G2、G2，將凸緣狀構件14、間之距 離（支撐點間距離）設於輥12之軸方向上。又，凸緣狀構件 14構成為具有較輥12之直徑更大之直徑。 因此，玻璃板G係以其長度方向邊緣部G2、Q2載置於凸 緣狀構件14、14上而得以搬送，藉此，因玻璃板G之自身 重量而在彈性變形為向下方彎曲之形狀之狀態下搬送。 如此，藉由凸緣狀構件14、14使玻璃板G以相對於玻璃 板G之搬送方向A平行之軸p為中心彎曲，藉此與玻璃板g 之搬送方向A對應之玻璃板G之剛性提高。藉此，即便是 薄板之玻璃板G’報12、12、12…之間的玻璃板g之搬送 方向頂端⑴亦不會因自身重量而垂下，因而可穩定地進行 搬送。 例如’根據斷面二次矩等計以，若使厚度為〇1 _之 玻璃板G彎曲0.7 mm左右，則具有與厚度為〇 7麵之平坦 之玻璃板同等之剛性。因此，安裝於輥12上之凸緣狀構件 155793.doc 1Λ -IU - 201200442 14亦可=具有相對純以直徑大μ _左右之直徑者。 又’就厚度為〇·2 _之玻璃板G而f，若·彎曲〇.65 mm左 右則具有與厚度為〇.7麵之平坦之玻璃板同等之剛性。 再者，亦有如下之情形：當實際上使用搬送厚度為〇7 玻璃板之現有設備的報式輸送機來穩定地搬送厚度 為〇·2 mm以下之玻璃板G時，無需與厚度為〇·7 mm之平坦 之玻璃板同等之剛性，例如亦可形成與厚度為G3〜G.5随 之平坦之玻璃板同等程度之剛性。其原因在於：通常，上 述現有設備之輥式輸送機並非製品規格極限之設計（輥距 之設計）’而是有裕度之設計。此情形時，例如就厚度為 0.2 mm之玻璃板〇而言，可彎曲〇 2 mm左右。 具體而言，藉由於輥丨2之兩端部繞捲膠帶，或於輥12上 女裝較薄之凸緣狀構件，或僅稍微削去報丨2之凸緣部以外 之部分’可將凸緣狀構件14設置於輥12上。因此，於搬送 厚度為0.7 mm之玻璃板之現有設備的輥式輸送機中，藉由 僅於輥12之兩端部設置凸緣狀構件14之小設備改造，可穩 定地搬送厚度為0.2 mm以下之玻璃板G，而不會發生如圖6 所示之先前之異常。再者，於圖1中，相對於輥12之大小 而誇張地表示凸緣狀構件14 ’但實際上雙方之直徑並無較 大之差別。 又，如圖1之形態所示，於藉由包含兩端部設置有凸緣 狀構件14、14之棍12、12的棍式輸送機1〇搬送玻璃板〇之 情形時，若將玻璃板G之最大彎曲量（彎曲量5)設定為較 大，則凸緣狀構件14與支撐玻璃板G最大限度地彎曲時之 155793.doc 201200442 玻璃板G之大致中央部的輥】2之中央部的周速差會變大， 玻璃板G上容易留下因滑移而產生之損傷，故不佳。因 此’於藉由輥式輸送機1 〇搬送玻璃板G之情形時，較佳 為’以最大彎曲量（彎曲量δ)為4 mm以下之方式，設定凸 緣狀構件14、14間之距離（支撐點間距離）、及與輥12之直 徑對應的凸緣狀構件之直徑。即，於藉由附有凸緣狀構件 14之輥式輸送機1〇搬送厚度為〇 2 mm以下之玻璃板（厚度t) 之情形時，較佳為將玻璃板G之最大彎曲量（彎曲量）設為 0.2 mm〜4 mm。就0.2 mmgtg0.3 mm之玻璃板而言，更佳 為’將玻璃板G之最大彎曲量（彎曲量）設為〇 22 mm。就〇.1 mmgt<〇2 mm之玻璃板而言，更佳為將玻 璃板G之最大彎曲量（彎曲量）設為〇3 ^^〜丨8爪瓜。就〇〇5 mm之玻璃板而言，更佳為，將玻璃板g之最大 mm。就 0.〇3mm$ t 彎曲量（彎曲量）設為〇.3 mm〜2.5 <〇_〇5mm之玻璃板而言，更佳為，將玻璃板G之最大彎曲 量（彎曲量）設為 0.3 mm〜3·3 mme 就〇 〇2 mm$t<〇 〇3 mm 之玻璃板而言，更佳為，將玻璃板G之最大彎曲量（彎曲 S)设為 〇·3 πππ 〜4 mm。 再者，於本實施之形態中，藉由於輥12之兩端部設置凸 緣狀構件14、14而構成彎曲機構，但是彎曲機構之形態並 不限定於此。例如，亦可為將觀12之形狀設為中央部凸起 之形狀’或設為中央部凹陷之形狀，從而於輥叫身附加 彎曲機構之形態。即便於該形態下，玻璃板〇亦以相對於 玻璃板G之搬送方向A平行之軸p為中心彎曲而搬送，因而 155793.doc ^ 201200442 可獲得與凸緣狀構件丨4同等之效果β 於圖2中，表示有如下之形態：於輥12之軸向中途部分 π置具有較輥12之直徑更大之直徑之凸緣狀構件16，藉此 使玻璃板G彈性變形為波狀而搬送β 藉由使玻璃板G彈性變形為波狀，使得與搬送方向對應 之玻璃板G之剛性進—步提高，因而可進—步穩定地搬送 玻璃板G » 者於圖2中，利用凸緣狀構件14、14、16使玻璃板G 上形成3處之.彎曲部⑺、以、&，藉此使玻璃板g彈性變 形為波狀’但玻璃板G(f曲部之數目並不限定於瑱，亦 可為如圖1所示之1處以上。又，於圖2中，玻璃板G之搬送 方向係與紙面垂直之方向。因此，玻璃板G之幫曲部⑺、 G4、G5係以相對於上述玻璃板G之搬送方向平行之軸、 Ρ2、Ρ3為中心彎曲。 進而，如圖3所示’亦可僅將凸緣狀構件16設置於親12 上。凸緣狀構件16之安裝位置亦不限定於輥12之長度方向 中央部’只要是李昆之軸方向之中途部分、具有剛性且可使 玻璃板G彎曲之位置即可。 再者，關於板厚為0.2 _之較薄的玻璃板〇，若支撑該 玻璃板G之兩端部’則會因玻璃板G之自身重量而充分彎 曲。又’可知’即使使用材料力學計算式進行計算，亦會 曲狀 圖4中表示有藉由起重機2〇使玻璃板〇彈性變形 而搬送之形態。 155793.doc 201200442 起重機20包含吸附並握持玻璃板G之4個吸附墊（吸附機 構）22、22…，支撐吸附墊22、22...之框架24，移動自如地 導引框架24之軌道26，以及使框架24沿軌道26移動之未圖 示之驅動部等。4個吸附墊（吸附機構）22、22…係以各自個 吸附面相對於與玻璃板G之搬送方向平行之軸P而形成圓筒 面之方式安裝於框架24上。 如圖4所示’藉由各自傾斜之4個吸附墊（吸附機構）22、 22…’使玻璃板G在以相對於箭頭A所示之玻璃板G之搬送 方向平行之軸P為中心而彈性變形為彎曲狀的狀態下吸 附。玻璃板G係於垂直上方形成凸狀。然後，玻璃板G係 於該狀態下藉由起重機20而搬送。 即便於使用起重機20搬送玻璃板G之形態下，玻璃板G 亦在以相對於箭頭A所示之玻璃板G之搬送方向平行的軸p 為中心而彈性變形為彎曲狀的狀態下搬送。因此，即便是 厚度為0.2 mm以下之較薄的玻璃板，亦可穩定地進行搬 送°又，即使沿搬送方向A高速地搬送玻璃板G，玻璃板G 上亦不會產生裂紋，因而可防止玻璃板G之開裂。 再者’於圖4中藉由4個吸附墊22、22…使玻璃板G彈性 變形，但吸附墊22之個數並不限定於4個，只要可使玻璃 板G彈性變形為上述形態，則亦可為2個以上。 又’於圖4之形態中’藉由起重機20搬送玻璃板G，但即 便於利用具有吸附墊之機器人搬送之形態中，亦可獲得與 起重機20之搬送形態相同之效果。 圖5中表示有藉由起重機使玻璃板g傾斜，且一面將搬送 155793.doc • 14- 201200442 方向自A方向轉換為b方向一面搬送玻璃板G之形態。 於圖5中，玻璃板G係在以相對於搬送方向a於水平方向 上傾斜45度之軸P1為中心、彈性變形為彎曲狀的姿態下由 吸附墊22保持。然後，以該姿態沿搬送方向a加以搬送， 其後，沿於水平方向上與搬送方向八正交之搬送方向B搬 送。 藉由在上述之姿態下搬送玻璃板G，於自八向6之搬送方 向之轉換時無需變更玻璃板G之姿態，即便是厚度為〇 2 mm以下之薄板之玻璃板G亦具有剛性地進行搬送。 再者，使玻璃板Gf曲之軸並不限定於上述45度者。 即，亦可為具有與玻璃板G之搬送方向平行的分量之軸。 即，亦可為除與玻璃板G之搬送方向正交之軸以外的軸。 繼而重子本發日月之玻璃板製品之製造方法進行說明。圖 7係本發明之玻璃板製品之製造方法之—實施形態的流程 圖。本發明之玻璃板製品之製造方法係❹上述之玻璃板 搬送方法》本發明之玻璃板製品之製造方法例如包含：熔 融玻璃原料而製造熔融玻璃之炫融步驟K1、㈣融玻璃成 形為玻璃帶之成形步縣2、對成形後之玻璃帶進行緩冷之 緩冷步驟K3、切斷經緩冷之玻㈣並製成玻璃板之切斷步 驟K4、對所切斷之玻璃板進行搬送及捆包之取板步驟κ5 以及獲得玻璃板製品Κ6。作為成形步驟代表例，可 列舉溶化法、再伸延法等之下拉成形方法或浮式法等公知 技術。 關於本&明之玻璃板製品之製造方法，除於切斷步驟 155793.doc -15- 201200442 及取板步驟K5中之玻璃板之搬送中利用上述之玻璃板搬送 方法或玻璃板搬送裝置以外’均屬於公知技術之範圍。 又’關於本發明之玻璃板製品之製造方法中利用的玻璃板 搬送方法或玻璃板搬送裝置，係如上所述。於圖7中表示 出作為本發明之玻璃板製品之製造方法之構成要素的熔融 步驟、成形步驟以及緩冷步驟，並且亦表示出切斷步驟、 取板步驟。 以上 已參照特疋之實施態樣詳細說明了本發明，但業 者知悉’只要不偏離本發明之範圍與精神，則可進行各種 修改或變更。 本申請案係基於2010年4月21曰申請之曰本專利申請案 2010-097839而成者，其内容以參照之形式併入本文中。 【圖式簡單說明】 圖1係表示藉由本發明之輥式輸送機使玻璃板以彎曲狀 彈性變形而搬送之形態的主要部分放大立體圖。 圖2係藉由本發明之輥式輸送機使玻璃板以波狀彈性變 形而搬送之形態下的輥之前視圖。 圖3係藉由包含於輥之中途部分設置有凸緣狀構件之輥 之本發明之輥式輸送機使玻璃板以彎曲狀彈性變形而搬送 之形態下的上述輥之前視圖。 ▲圖4係表示本發明中藉由起重機使玻璃板以彎曲狀彈性 形而搬送之形態的主要部分放大立體圖。 圖5係表示本發明中藉由起重機一面改變搬送方向一面 搬送玻璃板之形態之說明圖。 155793.doc 201200442 圖6係表示先前之玻璃板搬送方法之一例的主要部分放 大立體圖。 圖7係本發明之玻璃板製品之製造方法之/實施形態的 流程圖。 【主要元件符號說明】 1、10 車昆式輸送機 2、12 輥 14、16 凸緣狀構件 20 起重機 22 吸附墊 24 框架 26 軌道 A、B 箭頭 G 玻璃板 G1 玻璃板G之頂端 G2 玻璃板G之長度方向邊緣部 G3、G4、G5 玻璃板G之彎曲部 P、PI、P2、P3 與玻璃板G之搬送方向平行之轴 δ 彎曲量 155793.doc 17201200442 VI. Description of the Invention: [Technical Field] The present invention relates to a glass plate for use in a glass plate of extremely thin thickness for transporting a liquid crystal display or an LED (Organic Light Emitting Display) lighting device or the like The conveying method, the glass plate conveying device, and the manufacturing method of the glass plate product. [Prior Art] Patent Document 1 discloses that a glass plate used in a liquid crystal display has a thickness of 0.7 mm or less. Further, Patent Document 2 discloses a flat panel display using an extremely thin glass plate having a thickness of 0.2 mm or less. As a device for conveying the above-mentioned thin glass plate, a device using a horizontal roller conveyor as described in Patent Document 1 is known. Further, as described in Patent Document 3, a device for absorbing and holding a glass plate by an adsorption grip portion provided at a tip end of a robot and transporting the glass plate by a robot is known. CITATION LIST Patent Literature Patent Literature 1: Patent Application No. 2007-315922 Patent Document 2: 曰 National Patent Publication No. 2005-1 15087 Patent Document 3: 曰 National Patent Publication No. 2007-158170 Contents] Problems to be Solved by the Invention However, the rigidity of the glass plate is proportional to the thickness of the glass plate. Therefore, if you want to transport a glass plate with a thin glass thickness, especially a glass plate with a thickness of 〇·2 mm or less, the rigidity of the 155793.doc 201200442 glass plate is very low compared to a glass plate with a thickness of 〇7 mm. Therefore, the following problems arise. In other words, as described in Patent Document 1, when a glass sheet for glass sheet conveyance having a thickness of 07 mm is used, a glass sheet having a thin glass thickness is transported, in particular, a glass sheet having a thickness of 0.2 mm or less. In the case where the rigidity is low, as shown in FIG. 6, between the rolls 2, 2, 2, ... of the roller conveyor 1, the top end G1 of the glass sheet G is downward due to its own weight. When it is hung, the top G1 will be broken on the roller (not shown). Therefore, if a glass plate having a thin glass thickness is to be conveyed by a roll conveyor for a glass plate having a thickness of 0.7 mm, in particular, a glass plate G having a thickness of 〇2, the roll type cannot be directly used. Conveyor 1. In the case of a glass plate having a relatively thin thickness of the conveying glass, particularly a glass plate G having a thickness of 〇·2 mm or less, the following problem occurs: the roller conveyor 2 must be made to make the rollers 2, 2, 2 The distance between ... is very close to the large equipment change. Further, if a glass plate having a thin glass thickness is to be conveyed at a high speed by a robot in Patent Document 3, in particular, a glass plate having a thickness of 0.2 mm or less, the following problem may occur: sometimes, due to its low rigidity, During the transfer, cracks are generated on the glass plate, and the glass plate is cracked. The present invention has been made in view of the above circumstances. The object of the invention is to provide a glass sheet conveying method, a glass sheet conveying apparatus, and a method for producing a glass sheet product which can be stably conveyed even with a thin glass sheet. In order to achieve the above object, the present invention provides a glass sheet conveying method for conveying a glass sheet by elastically deforming a glass sheet into a curved shape centering on an axis having a component parallel to the conveying direction of the glass sheet. 155793.doc -4- 8 201200442 In order to achieve the above object, the present invention provides a glass sheet conveying apparatus including a bending mechanism which elastically deforms a glass sheet centering on an axis having a component parallel to a conveying direction of the glass sheet. It is curved. In order to achieve the above object, the present invention provides a glass sheet conveying method in which a glass sheet is conveyed by elastically deforming a glass sheet around a shaft parallel to a conveying direction of a glass sheet. In order to achieve the above object, the present invention provides a glass sheet conveying apparatus including a bending mechanism that elastically deforms a glass sheet into a curved shape centering on an axis parallel to a conveying direction of the glass sheet. In order to achieve the above object, the present invention provides a method for producing a glass plate product, which comprises the steps of: melting a molten glass raw material to produce a molten glass, forming a molten glass into a glass ribbon, and slowly cooling the formed glass ribbon. a slow cooling step, a cutting step of cutting the glass sheet by the slow-cooling glass ribbon, and a step of removing and arranging the cut glass sheet, in the method of manufacturing the glass sheet product, cutting The glass plate transfer method of the present invention is used in the step of moving or removing the glass plate in the step of taking the plate. In order to achieve the above object, the present invention provides a method for producing a glass sheet product, which comprises the steps of: melting a molten glass raw material to produce molten glass, forming a molten glass into a glass ribbon, and slowly cooling the formed glass ribbon. a slow cooling step, a cutting step of cutting the glass sheet by the slow-cooling glass ribbon, and a step of removing and arranging the cut glass sheet. In the method for producing the glass sheet product, the cutting step is performed. In the step or the glass plate transfer in the step of taking the plate, the glass plate transfer device of the present invention is used to carry out the glass plate transfer. According to the present invention, the glass plate is elastically deformed into a curved shape around the axis having a component parallel to the conveying direction of the glass plate by the bending mechanism, whereby the rigidity of the glass plate corresponding to the conveying direction is improved. According to the invention, the glass plate is elastically deformed into a curved shape centering on the axis parallel to the conveying direction of the glass plate by the bending mechanism, whereby the rigidity of the glass plate corresponding to the conveying direction is improved. Thus, the present invention can be stably carried out even in the case of a thin glass plate. In addition, the glass plate is elastically deformed into a curved shape centering on the axis having a component parallel to the conveying direction of the glass sheet, and is centered on an axis other than the axis orthogonal to the conveying direction of the glass sheet. The meaning of elastically deforming the glass sheet into a curved shape is the same. In the glass sheet conveying method of the present invention, it is preferable that the glass sheet is elastically deformed into a wave shape and conveyed. In the above-described bending mechanism of the glass sheet conveying apparatus of the present invention, it is preferable that the glass sheet is elastically deformed into a wave shape. By elastically deforming the glass sheet into a wave shape, the rigidity of the glass sheet corresponding to the conveyance direction is further improved, so that the glass sheet can be further stably conveyed. The glass sheet conveying method of the present invention is suitable for a glass sheet having a thin glass thickness, particularly a glass sheet having a thickness of 0.2 mm or less. By applying the present invention to a glass plate having a thin glass thickness, in particular, a glass plate having a thickness of 〇2 mm or less, the rigidity of the glass plate during transportation is improved, so that even the extremely thin glass plate described above can be satisfactorily Carry out the transfer. 155793.doc -6·201200442 The glass sheet conveying method of the present invention preferably conveys the glass sheet at an ambient temperature below the strain point. Preferably, in the case where the thickness of the glass plate is 0.2 mm or less, the maximum bending amount of the glass plate is 〇2 mm to 4 mm, which is one of the glass plate conveying apparatuses of the present invention. In a preferred aspect, the bending mechanism is a roller conveyor including a plurality of rollers, and a flange-shaped member is provided at both ends and/or a middle portion of the roller, and the flange-shaped member has The diameter of the roller is larger and the edge portion and/or the intermediate portion of the glass sheet are placed. The glass plate is bent at the edge portion and/or the intermediate portion of the glass plate by the flange-shaped members provided at the both end portions and/or the intermediate portion of the roller, whereby the glass plate is bent around the axis in the conveying direction. Transfer. Further, in the roll conveyor of the conventional equipment for conveying a glass plate having a thickness of 0.7 mm, the glass can be stably conveyed by the small device modification in which only the flange member is provided at both ends and/or the middle portion of the roller. A glass plate having a small thickness, in particular, a glass plate having a thickness of not more than 2 mm, does not cause the abnormality in the above-mentioned Patent Document 1. In the case of the glass sheet conveying apparatus of the present aspect, it is preferable that the maximum bending amount of the glass sheet due to the flange-like member is 0.2 mm to 4 mm when the thickness of the glass sheet is 0.2 mm or less. Even a glass plate having a thickness of 0.2 mm or less can obtain sufficient rigidity by a small amount of the above-mentioned bending amount, but if the maximum bending amount is less than 〇2 mm, the rigidity necessary for the conveyance cannot be obtained, and the glass plate is bent and The abnormality in Patent Document 1 occurs. On the other hand, even if the maximum bending amount exceeds 4 155793.doc 201200442 mm, the glass plate with a thickness of 0.2 mm or less will not be damaged. However, in the case where the maximum bending amount exceeds 4 mm, when the glass conveyor is bent by the roller conveyor provided with the flange-like members at both ends, the flange-like members and the support supporting the both ends of the glass plate are supported. When the glass plate is bent to the maximum extent, the circumferential speed difference of the central portion of the roller at the center portion is increased, and the glass plate is likely to be damaged by the slippage, which is not preferable. In other words, by setting the maximum amount of curvature to be 4 mm or less, it is possible to prevent the occurrence of damage due to the circumferential speed difference of the roller, and therefore, the glass plate having a thickness of 〇.2 mm or less is conveyed by the newspaper conveyor. In the case, it is preferable to set the distance between the flange-like members (the distance between the support points) and the diameter of the flange-shaped member corresponding to the diameter of the roller so that the maximum bending amount is in the range of 〇2 mm to 4 mm. . In another aspect of the glass sheet conveying apparatus of the present invention, it is preferable that the f-curve mechanism includes an adsorption device that adsorbs and holds the glass sheet at two or more points. The object of this aspect is not the transport form of the co-conveyor, but the robot transport form including the suction mechanism, or the crane transport form β, which holds the glass plate by the suction mechanism at 2 or more points, so that the glass plate can have the glass plate The axis of the component parallel to the conveying direction is centered and elastically deformed in a curved shape. The glass sheet conveying apparatus of the present invention preferably conveys the glass sheet at an ambient temperature below the strain point. The glass sheet conveying method and the glass sheet conveying apparatus of the present invention are suitable for the form of conveying a single glass sheet, and are also applicable to a form in which a strip-shaped glass sheet wound from a roll is taken out from the roll. Effect of the Invention 155793.doc 201200442 The method for producing a glass sheet according to the present invention, a glass sheet conveying apparatus, and a method for producing a glass sheet product are characterized in that the glass sheet is elastically deformed into a bending centering on an axis having a component parallel to the conveying direction of the glass sheet. The glass plate is conveyed in a shape. Alternatively, the glass sheet is conveyed by elastically deforming the glass sheet so as to be curved around the axis parallel to the conveying direction of the glass sheet. As a result, the glass sheet is conveyed in a state in which the rigidity is further improved. Therefore, even a thin glass sheet having a thickness of 0.2 mm or less can be stably conveyed. [Embodiment] Hereinafter, a preferred embodiment of a glass sheet conveying method, a glass sheet conveying apparatus, and a glass sheet product manufacturing method of the present invention will be described in detail with reference to the accompanying drawings. In addition, in the present specification, "above" It means vertical above, and "below" means vertical below. Fig. 1 shows a form in which the glass sheet G is elastically deformed into a curved shape by a roller conveyor 1 搬. As shown in Fig. 1, the glass sheet G is conveyed by being elastically deformed into a curved shape centering on the axis P parallel to the conveying direction of the glass sheet g indicated by the arrow A. In other words, the glass plate G is elastically deformed into a curved shape and conveyed around the axis P having a component parallel to the conveying direction A of the glass sheet G. At this time, since the glass sheet G is conveyed at an ambient temperature equal to or lower than the strain point, no strain is left on the glass sheet G after the conveyance, and deformation is not caused. Further, the glass sheet G conveyed by the roller conveyor 10 may be a glass sheet of a soap sheet which is cut into a predetermined rectangular shape, or may be a strip-shaped glass sheet which is conveyed from one side of the stick. Further, the glass plate G may be a glass plate 155793.doc 201200442, a glass plate to which a film is attached, and a surface-coated glass plate equal to an appendage attached to the glass plate as a substrate. The axis P parallel to the conveying direction A of the glass sheet G means ±5 with respect to the conveying direction a of the glass sheet g. The axis within. Further, in the glass sheet G shown in Fig. 5 to Fig. 5 described below, the state in which the elastic deformation is curved is explained in an easy-to-understand manner, and the state is exaggerated. In the roller conveyor 10, a bending mechanism for elastically deforming the glass sheet G into a curved shape is provided on the disc-shaped flange-like members 14, 14 at both end portions of the respective rolls 12, 12, .... In order to mount the longitudinal edge portions G2 and G2 of the glass sheet, the flange-like members 14 and 14 are provided with the distance between the flange-like members 14 (the distance between the support points) in the axial direction of the roller 12. Further, the flange-like member 14 is configured to have a larger diameter than the diameter of the roller 12. Therefore, the glass sheet G is conveyed by being placed on the flange-like members 14 and 14 in the longitudinal direction edge portions G2 and Q2, whereby the glass sheet G is elastically deformed into a shape bent downward by the weight of the glass sheet G. It is transported in the state. In this manner, the glass sheets G are bent around the axis p parallel to the conveying direction A of the glass sheets G by the flange-like members 14 and 14, whereby the rigidity of the glass sheet G corresponding to the conveying direction A of the glass sheets g is achieved. improve. Thereby, even if the top end (1) of the glass sheet g in the conveyance direction between the glass sheets G' of the sheets G's 12, 12, 12, ... does not hang down by its own weight, it can be conveyed stably. For example, when the glass plate G having a thickness of 〇1_ is bent by about 0.7 mm in accordance with the second moment of the section or the like, it has the same rigidity as a flat glass plate having a thickness of 〇7. Therefore, the flange-like member 155793.doc 1Λ -IU - 201200442 14 attached to the roller 12 can also have a relatively pure diameter of about μ _. Further, the glass plate G having a thickness of 〇·2 _ is f, and if it is bent at about .65 mm, it has the same rigidity as a flat glass plate having a thickness of 〇.7. In addition, there is a case where the glass plate G having a thickness of 〇·2 mm or less is stably conveyed by using a newspaper conveyor that conveys the existing equipment having a thickness of 〇7 glass plate, and the thickness is not required. • A flat glass plate of 7 mm is equally rigid, and for example, it can be formed to have the same rigidity as a glass plate having a thickness of G3 to G.5. The reason for this is that, in general, the above-described roll conveyor of the prior art is not the design of the product specification limit (the design of the roll pitch) but has a margin design. In this case, for example, in the case of a glass plate having a thickness of 0.2 mm, it can be bent by about 2 mm. Specifically, by winding the tape at both ends of the roll , 2, or by using a thin flange-like member on the roll 12, or only slightly cutting off the portion other than the flange portion of the 丨 2 The flange-like member 14 is disposed on the roller 12. Therefore, in the roll conveyor of the prior art apparatus for conveying a glass plate having a thickness of 0.7 mm, the thickness of the roller-like member 14 provided only at both ends of the roller 12 can be stably transferred to a thickness of 0.2 mm. The following glass plate G does not have the previous abnormality as shown in Fig. 6. Further, in Fig. 1, the flange-like member 14' is exaggeratedly shown with respect to the size of the roller 12, but actually the diameters of both sides are not greatly different. Further, as shown in the form of Fig. 1, when the glass sheet is conveyed by the stick conveyor 1 including the sticks 12 and 12 having the flange-like members 14 and 14 at both ends, if the glass sheet is to be used, When the maximum bending amount (bending amount 5) of G is set to be large, when the flange-shaped member 14 and the supporting glass sheet G are bent to the maximum extent, the central portion of the roller 255 of the glass plate G is 155793.doc 201200442 The circumferential speed difference becomes large, and the glass plate G tends to leave damage due to slippage, which is not preferable. Therefore, when the glass sheet G is conveyed by the roller conveyor 1, it is preferable to set the distance between the flange-like members 14 and 14 so that the maximum bending amount (the amount of bending δ) is 4 mm or less. (the distance between the support points) and the diameter of the flange-like member corresponding to the diameter of the roller 12. In other words, when the glass plate (thickness t) having a thickness of 〇2 mm or less is conveyed by the roller conveyor 1 having the flange-like member 14, the maximum bending amount of the glass plate G is preferably bent. The amount is set to 0.2 mm to 4 mm. In the case of a glass plate of 0.2 mmgtg 0.3 mm, it is more preferable to set the maximum bending amount (bending amount) of the glass plate G to 〇 22 mm. In the case of a glass plate of mm1 mmgt < 〇 2 mm, it is more preferable to set the maximum bending amount (bending amount) of the glass plate G to 〇3 ^^~丨8 claw melon. For a glass plate of 5 mm, it is more preferable to maximize the mm of the glass plate g. For the glass plate of 0. 〇 3 mm $ t bending amount (bending amount) set to 〇.3 mm to 2.5 < 〇 _ 〇 5 mm, it is more preferable to set the maximum bending amount (bending amount) of the glass plate G For a glass plate of 0.3 mm to 3·3 mme for 〇〇2 mm$t<〇〇3 mm, it is more preferable to set the maximum bending amount (bending S) of the glass plate G to 〇·3 πππ 〜4 Mm. Further, in the embodiment, the bending members are formed by providing the flange-like members 14 and 14 at both end portions of the roller 12. However, the form of the bending mechanism is not limited thereto. For example, the shape of the view 12 may be a shape of the central portion protrusion or a shape of the central portion recessed, so that the roller is attached to the shape of the bending mechanism. In other words, in this form, the glass sheet bundle is also bent and conveyed around the axis p parallel to the conveying direction A of the glass sheet G, so that the effect equivalent to the flange-like member 丨4 can be obtained by 155793.doc ^ 201200442. Fig. 2 shows a form in which a flange-like member 16 having a diameter larger than the diameter of the roller 12 is placed in the middle portion π of the axial direction of the roller 12, whereby the glass sheet G is elastically deformed into a wave shape and conveyed. By elastically deforming the glass sheet G into a wave shape, the rigidity of the glass sheet G corresponding to the conveyance direction is further increased, so that the glass sheet G can be stably conveyed in a stepwise manner. The members 14, 14, 16 form three curved portions (7), y, and amps on the glass sheet G, whereby the glass sheet g is elastically deformed into a wave shape 'but the glass sheet G (the number of the curved portions is not The thickness is limited to one or more as shown in Fig. 1. In Fig. 2, the conveying direction of the glass sheet G is perpendicular to the plane of the paper. Therefore, the bending portions (7) and G4 of the glass sheet G are G5 is bent around the axis parallel to the conveying direction of the glass sheet G, Ρ2, Ρ3. As shown in Fig. 3, the flange-like member 16 may be provided only on the pro 12. The attachment position of the flange-like member 16 is not limited to the central portion in the longitudinal direction of the roller 12 as long as it is in the direction of the axis of Li Kun. Partially, it is rigid and the glass plate G can be bent. Further, regarding the thin glass plate having a thickness of 0.2 _, if the both ends of the glass plate G are supported, the glass plate G is It is fully curved by its own weight. It is also known that even if it is calculated using the material mechanics calculation formula, the shape of the glass sheet is elastically deformed by the crane 2 图. Figure 155793.doc 201200442 Crane 20 includes four adsorption pads (adsorption mechanisms) 22, 22... that adsorb and hold the glass sheet G, supports the frame 24 of the adsorption pads 22, 22, ..., freely guides the rails 26 of the frame 24, and makes the frame A drive unit (not shown) that moves along the rail 26, etc. The four adsorption pads (adsorption mechanisms) 22, 22, ... form a cylindrical surface with the respective adsorption surfaces parallel to the axis P parallel to the direction in which the glass sheets G are transported. The method is mounted on the frame 24. As shown in FIG. It is shown that the glass sheet G is elastically deformed into a curve centering on the axis P parallel to the conveying direction of the glass sheet G shown by the arrow A by the four adsorption pads (adsorption mechanisms) 22, 22...' The glass plate G is formed in a convex shape in a vertical state. Then, the glass plate G is conveyed by the crane 20 in this state. That is, the glass plate G can be conveyed by using the crane 20 to convey the glass plate G. It is also conveyed in a state of being elastically deformed into a curved shape centering on the axis p parallel to the conveying direction of the glass sheet G indicated by the arrow A. Therefore, even a thin glass plate having a thickness of 0.2 mm or less is also Since the glass sheet G can be conveyed at a high speed in the conveyance direction A, cracks do not occur on the glass sheet G, and cracking of the glass sheet G can be prevented. Further, in FIG. 4, the glass sheets G are elastically deformed by the four adsorption pads 22, 22, ..., but the number of the adsorption pads 22 is not limited to four, as long as the glass sheets G can be elastically deformed into the above-described form, It can also be two or more. Further, in the form of Fig. 4, the glass sheet G is conveyed by the crane 20, but in the form of being transported by the robot having the adsorption pad, the same effect as that of the crane 20 can be obtained. Fig. 5 shows a configuration in which the glass sheet g is tilted by a crane, and the glass sheet G is conveyed while the direction of the transfer 155793.doc • 14-201200442 is changed from the A direction to the b direction. In Fig. 5, the glass sheet G is held by the suction pad 22 in an attitude in which the glass sheet G is elastically deformed into a curved shape centering on the axis P1 which is inclined by 45 degrees in the horizontal direction with respect to the conveyance direction a. Then, it is conveyed in the conveyance direction a in this posture, and then conveyed in the conveyance direction B orthogonal to the conveyance direction eight in the horizontal direction. By conveying the glass sheet G in the above-described posture, it is not necessary to change the posture of the glass sheet G during the transfer from the octagonal direction 6, and even the glass sheet G having a thickness of 〇2 mm or less is rigidly formed. Transfer. Further, the axis of the glass plate Gf is not limited to the above 45 degrees. That is, it may be an axis having a component parallel to the conveying direction of the glass sheet G. In other words, it may be an axis other than the axis orthogonal to the conveying direction of the glass sheet G. Next, the manufacturing method of the glass plate product of the sun and the moon will be described. Fig. 7 is a flow chart showing an embodiment of a method for producing a glass sheet product of the present invention. The method for producing a glass sheet product according to the present invention is the method for producing a glass sheet according to the present invention. The method for producing a glass sheet product according to the present invention includes, for example, a step of melting a molten glass material to produce molten glass, and (4) forming a glass ribbon into a glass ribbon. The forming step 2, the slow cooling step K3 of the formed glass ribbon, the cutting step K4 of cutting the slow-cooled glass (4), and forming the glass sheet, and transporting and tying the cut glass sheet The package takes the step κ5 and obtains the glass sheet product Κ6. As a representative example of the molding step, well-known techniques such as a down draw method or a float method such as a melting method or a re-extension method may be mentioned. The method for producing the glass plate product of the present invention is used in addition to the glass plate transfer method or the glass plate transfer device described above in the cutting step 155793.doc -15-201200442 and the glass plate transfer in the step K5. They are all within the scope of known technology. Further, the glass sheet conveying method or the glass sheet conveying apparatus used in the method for producing a glass sheet product of the present invention is as described above. Fig. 7 shows a melting step, a forming step, and a slow cooling step as constituent elements of the method for producing a glass sheet product of the present invention, and also shows a cutting step and a step of taking the sheet. The present invention has been described in detail with reference to the embodiments of the present invention. It is understood that various modifications and changes can be made without departing from the scope and spirit of the invention. The present application is based on a patent application No. 2010-097839 filed on Apr. 21, 2010, the content of which is incorporated herein by reference. [Brief Description of the Drawings] Fig. 1 is an enlarged perspective view showing a main part of a state in which a glass sheet is elastically deformed by bending in a roll conveyor of the present invention. Fig. 2 is a front view of the roller in a state in which the glass sheet is conveyed in a wavy elastic shape by the roll conveyor of the present invention. Fig. 3 is a front view of the roller in a state in which the glass sheet is elastically deformed in a curved shape by a roller conveyor of the present invention including a roller having a flange-like member in the middle of the roller. ▲ Fig. 4 is an enlarged perspective view of a main part showing a state in which a glass plate is conveyed in a curved elastic shape by a crane in the present invention. Fig. 5 is an explanatory view showing a state in which the glass sheet is conveyed while the conveyance direction is changed by the crane in the present invention. 155793.doc 201200442 Fig. 6 is a perspective view showing an enlarged main portion of an example of a conventional glass sheet conveying method. Fig. 7 is a flow chart showing the embodiment/embodiment of the method for producing a glass sheet product of the present invention. [Main component symbol description] 1, 10 car-type conveyor 2, 12 roller 14, 16 flange-like member 20 crane 22 adsorption pad 24 frame 26 track A, B arrow G glass plate G1 glass plate G top G2 glass plate The longitudinal direction edge portions G3, G4, and G5 of G, the curved portions P, PI, P2, and P3 of the glass plate G are parallel to the direction in which the glass sheet G is conveyed. δ The amount of bending 155793.doc 17