201134776 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種平板姑斑夕如綠^ 但卞极坡墒之切線加工裝置及切線加工 方法。 【先則技術】 作為平板玻璃之製法，先前以來已知有採用浮式法之玻 璃帶製造方法。 根據該製造方法，首先將熔融玻璃供給至浮浴槽之熔融 錫表面上，且使熔融玻璃於熔融錫浴中成形為連續帶狀之 玻璃帶。然後，將於熔融錫浴中成形為特定寬度之高溫玻 璃▼自熔融錫表面抽出。繼而，藉由緩冷爐使所抽出之玻 璃帶緩冷之後，藉由切割裝置將自緩冷爐連續搬送而來之 帶狀玻璃帶切割為特定尺寸之矩形狀平板玻璃。 上述切割裝置包含切線加工裝置及折斷機。上述切線加 工裝置於玻璃帶之表面切入加工出與玻璃帶之搬送方向正 父之切線。上述折斷機藉由繞上述切線施加彎曲力矩而使 切線之裂痕（裂縫）於平板玻璃之厚度方向伸展來沿切線割 斷玻璃帶。 圖11係專利文獻1中例示之切線加工裝置之平面圖，圖 12係其側視圖。如該等圖中所示，切線加工裝置具有複數 個搬送輥2、2…、及包含超硬合金之切割工具3»搬送輥2 配設於與破璃帶1之搬送方向正交之方向而搬送玻璃帶1。 又’切割工具3對藉由搬送輥2而搬送中之玻璃帶1之表面 進行按壓，且相對於搬送中之玻璃帶1而如箭頭Α般斜向移 153242.doc 201134776 動。藉此，於玻璃帶1之表面切入加工出與玻璃帶之搬送 方向正交之切線4。作為切割工具3，除專利文獻1中所揭 示之切割輪之外’亦已知有專利文獻2中所揭示之劃線切 [先前技術文獻] [專利文獻] [專利文獻1]曰本專利特開平8-23 1239號公報 [專利文獻2]曰本專利特開2006-169045號公報 【發明内容】 [發明所欲解決之問題] 且說，圖11、圖12所示之先前之切線加工裝置中，當切 割工具3於搬送輥2、2之間之空隙5中行進時，存在因切割 工具3相對於玻璃帶丨之加工力而導致位於空隙5之部分之 玻璃帶1產生斷裂（破裂）之問題 背面之搬送輥2不處於空隙5中 5將切割工具3相對於玻璃帶1 除。 。其原因在於支撐玻璃帶1 ’該問題可透過結合於空隙 之加工力設定得較低而消 工 刀玟疋侍較低，則會導致切線4未被加 至玻璃帶1之特定深度。即，切線4之裂痕未伸展至玻璃 糾之適當深度，故於後段之折斷機中存在玻璃帶i產生未 沿切線4被割斷之割斷不良(折損)之問題。該割斷不良會於 玻璃帶1之厚度為0.7 mm以時 、 厚度為G.3随以下者。了時.4者地產生’尤其多發於 另-方面，亦已知有將平板玻璃之背面固定於定盤而於 153242.doc 201134776 平板玻璃之表面加工切線之切割線加工裝置。當藉由該裝 置而於厚度為〇7 mm以下之平板玻璃之表面加工切線時， 存在使切割工具行進時切割工具於平板玻璃上跳躍而難以 加工連續切線之問題。又，亦存在切線之裂痕伸展至平板 玻璃之適當深度以上而使平板玻璃變得易碎之問題。 即’先前之切線加工裝置無法於厚度為〇 7 下之平 板玻璃之表面上加工穩定之切線。 本發明係鑒於所述情況而完成者，其目的在於提供一種 可於平板玻璃之表面加工穩定之切線之平板玻璃之切線加 工裝置及平板玻璃之切線加工方法。 [解決問題之技術手段]201134776 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a tangent processing apparatus and a tangential processing method for a flat plaque such as a green plaque. [Prior Art] As a method of producing flat glass, a method of manufacturing a glass ribbon using a floating method has been known. According to this production method, first, molten glass is supplied onto the surface of the molten tin of the float bath, and the molten glass is formed into a continuous strip-shaped glass ribbon in a molten tin bath. Then, a high temperature glass which is formed into a specific width in a molten tin bath is taken out from the surface of the molten tin. Then, after the drawn glass ribbon is slowly cooled by the slow cooling furnace, the ribbon glass ribbon continuously conveyed from the slow cooling furnace is cut into a rectangular flat glass of a specific size by a cutting device. The cutting device includes a tangential processing device and a breaking machine. The tangential processing device cuts the tangent to the front of the glass ribbon in the direction in which the glass ribbon is conveyed. The above-mentioned breaking machine cuts the glass ribbon along a tangential line by applying a bending moment around the tangent to cause a crack (crack) of the tangent to extend in the thickness direction of the flat glass. Fig. 11 is a plan view showing a tangential processing device exemplified in Patent Document 1, and Fig. 12 is a side view thereof. As shown in the drawings, the tangential processing apparatus has a plurality of conveying rollers 2, 2, ..., and a cutting tool including a superhard alloy. The conveying roller 2 is disposed in a direction orthogonal to the conveying direction of the broken glass ribbon 1 Transfer the glass ribbon 1. Further, the cutting tool 3 presses the surface of the glass ribbon 1 conveyed by the conveyance roller 2, and moves obliquely with respect to the glass ribbon 1 being conveyed by an arrow Α 153242.doc 201134776. Thereby, a tangent 4 which is orthogonal to the direction in which the glass ribbon is conveyed is cut into the surface of the glass ribbon 1. As the cutting tool 3, in addition to the cutting wheel disclosed in Patent Document 1, the scribing cut disclosed in Patent Document 2 is also known [Prior Art Document] [Patent Document] [Patent Document 1] Japanese Laid-Open Patent Publication No. Hei. No. 2006-169045 [Patent Document 2] [Problems to be Solved by the Invention] In the prior tangential processing apparatus shown in Figs. 11 and 12 When the cutting tool 3 travels in the gap 5 between the conveying rollers 2, 2, there is a breakage (rupture) of the glass ribbon 1 located in the portion of the void 5 due to the processing force of the cutting tool 3 with respect to the glass ribbon. The conveying roller 2 on the back side of the problem is not in the gap 5, and the cutting tool 3 is removed relative to the glass ribbon 1. . The reason for this is that the problem of supporting the glass ribbon 1' can be set lower by the processing force combined with the gap and the lower the cutter, which causes the tangent 4 to be not applied to the specific depth of the glass ribbon 1. That is, the crack of the tangential line 4 is not stretched to the appropriate depth of the glass, so that the glass ribbon i in the subsequent stage has a problem that the cutting of the glass ribbon i is not cut along the tangential line 4 (breakage). This cutting failure occurs when the thickness of the glass ribbon 1 is 0.7 mm and the thickness is G.3. In the case of "4", it is known that it is particularly frequent in another aspect, and a cutting line processing apparatus for processing a tangential line on the surface of a 153242.doc 201134776 flat glass by fixing the back surface of the flat glass to the fixing plate is also known. When the tangential line is machined on the surface of the flat glass having a thickness of 〇7 mm or less by the apparatus, there is a problem that the cutting tool jumps on the flat glass when the cutting tool travels, and it is difficult to process the continuous tangential line. Further, there is also a problem that the crack of the tangential line extends to a proper depth of the flat glass to make the flat glass fragile. That is, the previous tangential processing apparatus cannot process a stable tangent on the surface of the flat glass having a thickness of 〇7. The present invention has been made in view of the above circumstances, and an object thereof is to provide a tangential processing apparatus for flat glass which can process a stable tangent on a surface of a flat glass, and a tangent processing method for flat glass. [Technical means to solve the problem]
工迎克擇部件設定為包含軟質彈性材料之 為達成上述目的，本發明之平板玻璃之切線加工裝置之 發明包括：複數個搬送輥，纟係搬送平板玻^，且配設於 與該平板玻璃之搬送方向正交之方向者；及切割工具，其 係對藉由該搬送輥而搬送中之上述平板玻璃之表面進行按 星’且相對於上述平板玻璃搬送方向而斜向移動，藉此於 上述平板玻璃之表面加工與上述平板玻璃搬送方向正交之 切線者；該切線加工裝置之特徵在於：上述搬送輥至少於 上述切割丄具所斜向移動之範圍内被分割，且於各分割之 局ϋ·7 mm以下，將 之彈性體，且將上 153242.doc 201134776 述切割工具相對於上述平板玻璃之加工力設定為1.6〜8 〇 Ν。 為達成上述目的，本發明之平板玻璃之切線加工方法之 發明係一面藉由配設於與平板玻璃之搬送方向正交之方向 之複數個搬送輥而搬送該平板玻璃，-面使切割工具按壓 搬送中之上述平板玻璃之表面、並相對於上述平板玻璃之 搬送方向斜向移動，藉此於上述平板玻璃之表面加工與上 述平板玻璃搬送方向正交之切線者；該切線加工方法之特 徵在於.上述搬送輥至少於上述切割工具所斜向移動之範 圍内被分割，且於各分割之上述搬送輥間具有抵接於上述 平板玻璃皆面之支撐部件之行進路徑’當藉由行進機構使 上述支撐部件與上述切割工具一體地以相同方向及相同速 度沿上述行進路徑行進、而於上述平板玻璃之表面加工切 線時，將上述平板玻璃之厚度設定為〇 7 mm以下，將上述 支撐部件設定為包含軟質彈性材料之彈性體，將上述切割 工具相對於上述平板玻璃之加工力設定為16〜8 〇 N，且藉 由上述切割工具於平板玻璃上加工切線。 本發明係以於藉由搬送輥而連續搬送之平板玻璃之表面 加工與搬送方向正交之方向的切線之切線加工裝置及切線 加工方法為對象。 根據本發明，將搬送平板玻璃之複數個搬送輥至少於切 割工具對於平板玻璃之搬送方向而斜向移動之範圍内加以 分割，且各分割之搬送輥間具有抵接於平板玻璃背面之支 撐部件之行進路徑。而且，一面藉由行進機構使該支撐部 153242.doc 201134776 件與切割工具- ϋ地以才目@方向及相同速度沿i述行進通 路行進，一面於平板玻璃之表面加工切線。由此，支撐部 件始終位於切割工具之下方’故可於藉由複數個搬送輥而 連續搬送之平板玻璃之表面穩定地加工切線。 而且’於加工對象之平板玻璃之厚度為0.7 mm以下之平 •。玻璃之Jf形時’將支樓部件設定為包含軟質彈性材料之 彈性體’將切割工具相對於平板玻璃之加工力設定為 1.6 8.0 N，且藉由切割工具而於平板玻璃之表面加工切 線。當設支撑部件並非為包含軟質彈性材料之彈性體而為 I質之定盤之情形時，因定盤之硬度較高而導致使切割工 璃之表I刀』工具於平板玻璃上跳躍，從而難以於平板玻 =表面加工連續切線。又，導致切線之裂痕伸展至平板 玻璃之適當深度以上而使平板玻璃易碎。 千板 相對於平板玻璃之加卫力未達UN，則存 在切線之深度變渗，於&也 、 沿切線割斷平板㈣ 未將平板玻璃割斷或未 —二=問題。另一方面，若加工力超過 在因加工力較高而造成切割工呈 璃之問題。由此，當於八別穿千板玻 加工切線日X下之平板破璃之表面 體，且將切9工且2件设定為包含軟質彈性材料之彈性 N。由此，二平板玻璃之加工力設定為…。 本發明可於藉由搬送輥而 〇 :\下之平板破璃之表面加工射的切線奴厚度〇.7 :Μ之平板麵之形狀可為帶狀 再者，使支揮部件構成為輕狀，且使該為矩形狀。 亥支撐部件旋轉自 153242.doc 201134776 如地支樓於行進機構之軸承部’藉此於行進路徑行進令之 支撐部件-面藉由與平板玻璃背面之摩擦阻力旋轉一面行 進。藉此，平板玻璃背面與支樓部件之接觸阻力減小，故 可抑制因支料件接觸於平板玻璃之背面而產生之擦痕。 又’輥狀支樓部件亦可一面藉由馬達等旋轉裳置旋轉—面 行進。藉此，即便支撐部件與平板玻璃背面之摩擦阻力較 低’亦可抑制輥狀支撐部件不旋轉過平板玻璃之背面而係 一面滑動一面行進。因而可抑制由支撐部件接觸於平板玻 璃之背面所引起之擦痕。 為達成上述目的’本發明之平板玻璃之切線加工農置之 發明包含：支標部件，其係固^於平板玻璃之背面者；及 切割工具，其係㈣定於該支撐部件之上述平板玻璃之表 面進订按壓並進移動’而於該表面加卫切線者；該切線 加工裝置之特徵在於：將上述平板玻璃之厚度設定為 mm以下’將上述支撐部件設定為包含軟質彈性材料之 性體’且將上述㈣工具㈣於上述平板朗之加工力^ 定為1.6〜8.0 N。 〇又 為達成上述目的’本發明之平板玻璃之切線加工方法之 發明係將平板玻璃之背面固定於支稽部件上，使切叫工且 按壓於固定在該支樓部件上之上述平板玻璃之表面並;; 進，藉此於該表面加工切線；該切線加工方法之特徵在 ^將上述平板玻璃之厚度設定為0.7 mm以下，將上述支 樓部件設定為包含軟質彈性材料之彈性體，將上述切割工 具相對於上述平板玻璃之加工力設定為h6〜n 组 153242.doc 201134776 上述切割工具而於平板玻璃之表面加工切線。 本發明係謂平板玻璃之f面固定於不㈣之支撑部件 且於所固疋之平板玻璃之表面加工所需切線之切線加 工裝置及切線加工方法為對象。 根據本發明’將平板玻璃之背面固定於支撐部件上，且 使切割工具㈣於該平板玻璃之表面並行進，藉此於平板 玻璃之表面上 力口工切線0 而且，於加工對象之平板玻璃之厚度為0.7 mm以下之平 板玻璃之&形時，將支樓部件設定為包含軟質彈性材料之 彈性體，將切割工具相對於平板玻璃之加工力設定為 1.6 8.0 N，且藉由切割工具而於平板玻璃之表面加工切 線。由此’本發明可於固定在支撑部件上且厚度❹7麵以 下之平板玻璃之表面加工穩定之切線。 如上所不，本發明適於平板玻璃之厚度為0.7 mm以下之 情形’但亦可穩定地切割易產生割斷不良之厚度⑸麵以 下之平板玻璃°即本發明更適於厚度0.3 mm以下之平板玻 璃之切割。 本發明較佳為上述支撐部件之硬度為50〜90。（依據JIS K6301彈簧式a型）。 右支撐部件之硬度未達50。，則因支撐部件之柔軟質而 導致切°〗工具所按壓抵接之平板玻璃之切線加工部分陷入 支撐部件’且已彈性變形之支撐部件之彈性回復力施加至 上述切線加工部分。由此，多餘之力作用於切線加工部分 而造成切線加工部分易破損。另一方面，若支撐部件之硬 153242.doc 201134776 度超過90。，則因支撐部件之硬度而導致於使切割工具行 進時，切割工具於平板玻璃上跳躍而難以於平板玻璃之表 面加工連續之切線。x，亦存在切線之裂痕伸展至平板玻 璃之適當深度以上而造成平板玻璃易碎之問題。 因此’根據本發明，藉由使支撐部件之硬度為50〜90。， 可於平板玻璃之表面加工更為穩定之切線。 [發明之效果] 根據本發明之平板玻璃之切線加工裝置及平板玻璃之切 線加工方法，可於厚度mm以下之平板玻璃之表面穩定 地加工切線。 【實施方式】 以下’根據隨附圖式對本發明之平板玻璃之切線加工裝 置及切線加工方法之較佳實施形態進行說明。 圖1係應用第1實施形態之平板玻璃之切線加工裝置丨〇之 浮式法之平板玻璃製造設備丨2的剖面圖。又，第1實施形 態之切線加工裝置1 〇係於作為液晶顯示器用玻璃基板而使 用且厚度為0.7 mm以下之玻璃帶（平板玻璃）14良好地加工 切線之裝置。再者，於以下之說明中，以圖1中玻璃帶14 之搬送方向作為基準’與其相同方向側稱作下游側（圖1之 箭頭X方向），其相反方向側稱作上游側。 圖1所示之平板玻璃製造設備12中，自上游側向下游側 依序配置有浮浴槽20、錫槽箱22、緩冷爐24及切線加工裝 置10。 浮浴槽20中，藉由將熔融玻璃連續地供給至熔融錫28之 153242.doc 201134776 浴面上而使玻璃帶14成形。玻璃帶14藉由錫槽箱22之提昇 觀道30而自熔融錫28提拉。之後’玻螭帶14通過錫槽箱22 内’並藉由缓冷輥26而搬送至緩冷爐24内，藉此緩緩地冷 卻至室溫為止。 已通過緩冷爐24之玻璃帶14藉由切線加工裝置1〇及未圖 示之折斷機而於玻璃帶14之寬度方向割斷。折斷機係圍繞 破璃帶14表面上所加工之切線施加彎曲力矩而沿切線割斷 破璃帶14之周知裝置。 再者’於玻璃帶14之寬度方向之切線加工至該表面之前 段中，預先藉由未圖示之切線加工裝置，於玻璃帶14寬度 方向兩端之表面加工沿著玻璃帶14搬送方向之搬送方向之 切線。該切線加工裝置之切割工具較佳為配置於搬送輥之 上方。如後所述，於寬度方向割斷玻璃帶之後，以未圖示 之折斷機沿前進方向之切線割斷玻璃帶之兩端。自於厚度 為〇·7 mm之玻璃帶14上穩定地加工搬送方向之切線的觀點 而言’與該切割工具對向之搬送輥亦較佳為具有與後述之 支承輥（支撐部件）48之硬度相同的硬度。又，該切割工具 相對於玻璃帶14之加工力亦較佳為設定為與後述之切割工 具44之加工力相同。 加工玻璃帶14之寬度方向之切線之切線加工裝置如圖 2、圖3所示’包含複數個搬送輥32、34、36、38、40、 42、切割工具44及支承輥48。 搬送輥32〜42搬送自緩冷爐24(參照圖1)送出之破璃帶 14’且配设於與玻璃帶14之搬送方向正交之方向。再者， 153242.doc 201134776 搬送輥32〜42之個數不限定於6個。 另一方面’切割工具44按壓於在搬送輥32〜42上搬送中 之玻璃帶14之表面上，且相對於搬送中之玻璃帶14，藉由 後述之行進機構而相對於玻璃帶丨4之搬送方向斜向移動。 由此’將與玻璃帶14之搬送方向正交之切線4加工至玻璃 帶14表面上。再者，作為切割工具44，使用超硬合金製 輪、劃線切刀輪等。又，當設玻璃帶14之搬送速度為V， 设切割工具44之行進速度為w，且設切割工具44相對於玻 璃帶14之搬送方向之行進角度為0時，藉由將該行進速度w 设定為w=v/cos0，在與玻璃帶丨4之搬送方向正交之方向加 工切線46。於此，設切割工具44之行進執跡為A(參照圖 2、圖 3) 〇 於沿切割工具44之行進軌跡A之下方位置上，形成有用 以使支承輥48在沿行進軌跡a之行進執跡b上行進之行進 路徑c。且，為形成該行進路徑c，搬送輥32〜42於軸向上 被分割成兩個部分。即’搬送輥32分割為搬送輥32a、 32B，並且同樣地，搬送報34、搬送輥36、搬送報38、搬 送報40以及搬送輥42分別被分割為搬送輥34A、34B、搬 送輥36A、36B、搬送輥38A、38B、搬送輥4〇A、4〇B以及 搬送輥42A、42B。由此，形成支承輥48所通過之行進路 徑C。再者，搬送輥32〜42為至少配置於切割工具44所斜向 移動之範圍内之輥。 支承輥48係抵接於玻璃帶14之背面並經由玻璃帶14而承 受切割工具44相對於玻璃帶14之加工力者，且係由包含軟 153242.doc 12 201134776 質彈性材料之彈性體構成。該支承輥48藉由圖惰示之行 進機構50而與切割工具44 一體地以相同方向及相同速度行 進。 行進機構50係、進給螺桿褒置，包含馬達52、連結於該馬 達52之輸出軸之進給螺桿54及螺母58。於螺母％之上部搭 載有構成進退機構之氣缸60,且於該氣缸6〇之活塞Μ之上 部設置有藉由軸64而旋轉自如地支撐支承輥心之固持器 66。又，藉由未圖示之控制部而控制馬達52使之與切割工 具44之驅動部同步。 從而，根據如此構成之行進機構5〇，驅動馬達52使螺母 58移動而使支承輥48移動至待機位置&位置。又此時， 切割工具44於支承輥48之上方位置待機。然後，當切割工 具44向玻璃帶14下降而開始切線之加工時，活塞62與^玄動 作同步地伸長而使支承輥48移動至b位置。由此，支承輥 48抵接於玻璃帶14之背面，並承受抵接於其表面之切割工 具44之按壓力。之後，支承輥48於藉由馬達52之進給動作 而抵接於玻璃帶14背面之狀態下，以與切割工具料相同方 向且相同速度移動至加工終止位置之c位置為止。 由此，根據該切線加工裝置10，如圖2般於玻璃帶“表 面加工切線46。又，具有彈性之支承輥48始終位於切割工 具44之下方，因此可於藉由搬送輥；32〜42而連續搬送之玻 璃帶14之表面穩定地加工切線46。 加工切線46之後，活塞62進行收縮動作，支承輥牦移動 至自玻璃帶14退避之d位置。然後，支承輥料藉由馬達” 153242.doc -13- 201134776 而回復移動至原來之a位置’且待機至下一加工動作為 止。再者，切割工具44亦同樣地，於切線加工結束時，退 避至玻璃帶14之上方’且返回至加工開始位置。又，行進 機構50不限定於進給螺桿裝置，可為包含齒條及小齒輪之 進給機構’亦可為皮帶驅動之進給機構。進而，搬送輥 32〜42之直徑為50〜300 mm，較佳為15〇〜25〇 mm。 然而’第1實施形態之切線加工裝置1〇如前所述係於厚 度0.7 mm以下之玻璃帶14表面加工切線46者。 為於該種玻璃帶14之表面加工切線4 6，依照以下規格設 置該切線加工裝置10。 即’根據切線加工裝置10 ’將支承輥4 8設定為以包含軟 質彈性材料之彈性體構成，且將切割工具44相對於玻璃帶 14之加工力設定為1.6〜8.0 N。 於設支承輥48並非為包含軟質彈性材料之彈性體而為硬 質之金屬製輥之情形時’因該輥之硬度較高而導致使切割 工具44行進時切割工具44於玻璃帶14上跳躍，從而難以於 玻璃帶14之表面加工連續之切線46。又，切線之裂痕伸展 至平板玻璃之適當深度以上而造成平板玻璃易碎。 若切割工具44相對於玻璃帶14之加工力未達！·6 N，則 相對於玻璃帶14之切線46之深度變淺，折斷機難以於玻璃 帶14之表面加工適當深度之切線46。另一方面，若加工力 超過8.0 Ν，則存在因加工力較高而造成切割工具44刺穿 玻璃帶14之問題。 由此，當於厚度0.7 mm以下之玻璃帶14表面加工切線46 I53242.doc 14 201134776 時’將支承輥4 8設定為包含軟質彈性材料之彈性體，且將 切割工具44相對於玻璃帶14之加工力設定為〗6〜8 〇 N為 佳。因此’根據設定為如此之規格之第丨實施形態之切線 加工裝置10，可於藉由搬送輥32~42而連續搬送之厚度〇7 mm以下之玻璃帶μ表面加工穩定之切線46。 再者’支承輥48為旋轉之輥，故行進中之支承輥48藉由 與玻璃帶14背面之摩擦阻力而一面旋轉一面行進。藉此， 玻璃帶14背面與支承輥48之接觸阻力降低，故可抑制因支 承輥48接觸於玻璃帶14之背面而引起之擦痕的產生。又， 該輥之直徑可與搬送輥32〜42之直徑為相同尺寸，亦可改 變尺寸。再者，支承鞑48亦可以一面藉由馬達等旋轉裝置 (未圖不）旋轉一面行進。 然而，該支承輥48之硬度較佳為50〜90。（依據JIS K6301 彈簧式A型）。 若支承輥48之硬度未達50。’則因支承輥48之柔軟質而 導致切割工具44所按壓抵接之玻璃帶14之切線加工部分陷 入支承輥48，且已彈性變形之支承輥48之彈性回復力施加 至上述切線加工部分。由此’有多餘之力作用於切線加工 部分上’故該切線加工部分變得容易破損。另一方面，若 支承輥48之硬度超過9〇。，則會因支承輥48之硬度導致使 切割工具44行進時切割工具44於玻璃帶14上跳躍，從而難 以於玻璃帶14之表面加工連續之切線46。又，切線之裂痕 伸展至平板玻璃之適當深度以上而使平板玻璃變得易碎。 由此’藉由使支承輥48之硬度為50~90。，可於玻璃帶14 153242.doc 15 201134776 尺馮穩定之切線46 — •，丨 tl u 圖5係支承觀48位於搬送輥32A'32B之間之搬送輥32之 側視圖，圖6係自圖5之Μ線觀察之箭視圖。 °圖6所不’較佳為於所分割之搬送親32A、 32峨於所有分割輥亦為同樣）之對向之邊緣部a上施加倒 力 ㈣地，較佳為於支承輥48之輥之兩端部之邊緣 部b上預先施加倒角加工。藉由該等邊緣部a、k倒角加 工’可防止輥邊緣對破璃帶14f面造成傷痕。 圖7係表示第2實施形態之切線加工裝置7〇之側視圖。 該切線加工裝置7〇孫# 了 # & '、；不移動之片材（支撐部件）72上固 定厚度0.7細以下之平板玻_之背面且於所固定之平 板玻璃74表面藉由使切割工具44按屋並行進而在上述表面 上t工所需之切線46之褒置。片材72亦與支承輥48(參照 圖4專）同樣地為包含軟質彈性材料之彈性體，較佳為將其 硬度設定為50〜90。。又，电，„ 、 刀口丨J工具44相對於平板玻璃74之 加工力亦同樣地設定為1 6〜8 〇 N。 藉此，第2實施形態之切線加工裝置7〇亦與第1施形態 之切線加工裝置10同樣地’可於厚度〇 7 _以下之平板玻 璃74之表面加工穩定之切線46。 再者，作為滿足上述硬度之支承輕48及片材以材料， 例不有向猜樹脂、胺醋、氟橡膠、氯丁二烯橡膠，但材料 並不限定於此，只要為軟質彈性材料即可，硬度為％,。 之材料會更佳。 (實施例） I53242.doc 201134776 製造厚度0.1 mm、〇·2 mm、ο」mm之3種平板破璃並 分別藉由硬度5〇°、7〇。、9〇。之支承輥支樓該等平板玻璃 之方面•於平板破璃之表面上，使劃線切刀輪以特定之 • #工力按壓於4表面上並且以_麵/挪之行進速度行進 纟於平板玻璃之表面加工切線。再者，支承輥與劃線切刀 輪一體地以相同方向及相同速度移動。 繼而，使用折斷機沿切線割斷平板玻璃，並依照下述判 定基準評估平板玻璃之割斷狀態。 <判定基準> A···可沿切線割斷平板玻璃。 B···難以折斷平板玻璃，但可沿切線割斷平板玻璃。 C···無法割斷平板玻璃或無法沿切線割斷平板玻璃。 圖8係表示採用厚度〇·〗mm之平板玻璃之評估結果之圖 表。 對於厚度〇. 1爪⑺之平板玻璃於支承輥之硬度為5〇。、 70°、90。之情形時，若劃線切刀輪相對於平板玻璃之加工 力分別為1.8〜2.5 N、h6〜2.5 N、i 7〜3 〇 N，則可沿切線 割斷平板玻璃。 圖9係表示厚度〇.2麵之平板玻璃之評估結果之圖表。 對於厚度0.2 mm之平板玻璃，於支承輥之硬度為5〇。、 70°、90°之情形時，若劃線切刀輪相對於平板玻璃之加工 力分別為3.3〜5.4 N、h9〜3.7 N、2·4〜35 N，則可沿切線 割斷平板玻璃。 圖丨〇係表示厚度0_3 mm之平板玻璃之評估結果之圖表。 153242.doc -17- 201134776 。對於：度0.3 mm之平板玻璃，於支承輥之硬度為5〇。、 之If形時，若劃線切刀輪相對於平板玻璃之加工 力刀別為3_〇〜Λ Ν 3.2〜8.0 Ν、2.2〜4.9 Ν，則可沿切線 割斷平板玻璃。 根據圖8〜圖1〇所示之評估結果而判明：平板玻璃之厚度 越薄，劃線切刀輪相對於平板玻璃之適當之加卫力越小^ 及適當加工力之範圍縮小…亦判明存在用以實現適當 之切線加工之支承輥之硬度範圍。 進而，’亦可證實如下内容：當於厚度為〇3 _以下之平 板玻璃之表面施加切線加H支承輥（支撐部件）為包 含軟質彈性材料之彈性體’及設劃線切刀輪(切割工具)相 對於平板玻璃之加工力為KkS.ON為佳。 再者，本實施例中對厚度0.3 mm以下之平板玻璃進行了 說明’但使用厚度0.7 mm以下之平板玻璃亦可獲得良好之 結果。 (比較例） 當除變更成硬度為⑽。之支承親以外與實施例同樣地於 平板玻璃之表面進行切線加工時，切線之裂痕伸展至平板 玻璃之適當深度以上，而使得平板玻璃於投入折斷機之前 既已未沿切線而斷裂。 【圖式簡單說明】 圖1係設置有第1實施形態之線加工裝置之、、客 π八凌之平板 玻璃製造設備之剖面圖。 圖2係圖1所示之切線加工裝置之平面圖。 153242.doc • 18· 201134776 圖3係圖2所示之切線加工裝置之立體圖。 圖4係切割工具之行進機構之構造圖。 圖5係支承輥位於搬送輥間之搬送輥之側視圖。 圖6係自圖5之A-A'線觀察之箭視圖。 圖7係第2實施形態之切線加工裝置之側視圖。 圖8係表示厚度〇 1 mm之平板玻璃之評估結果之圖表。 圖9係表示厚度0.2 mm之平板玻璃之評估結果之圖表。 圖係表示厚度0.3 mm之平板玻璃之評估結采I圖表。 圖11係先前之切線加工裝置之平面圖。 圖係圖丨丨所示之切線加工裝置之側視圖。 【主要元件符號說明】 1、 14 玻璃帶 2、 3 2 〜42 搬送親 3、 44 切割工具 4、 46 切線 5 幸昆間之空隙 10 切線加工裝置 12 平板玻璃製造設備 20 浮浴槽 22 錫槽箱 24 緩冷爐 26 緩冷輕 28 炫·融錫 30 提昇輥道 153242.doc -19- 201134776 32A〜42A、32B〜42B 所分割之搬送輥 48 支承輥 50 行進機構 52 馬達 54 進給螺桿 58 螺母 60 氣缸 62 活塞 64 軸 66 固持器 70 切線加工裝置 72 片材 74 平板玻璃 A、B 行進軌跡 a、b 邊緣部 C 行進路徑 X 箭頭 Θ 行進角度 153242.doc -20-In order to achieve the above object, the present invention includes a plurality of conveying rollers, a crucible conveying flat glass, and a flat glass. And a cutting tool for performing a diagonal movement of the surface of the flat glass conveyed by the transfer roller in a direction of the flat glass conveyance direction; The stencil processing device is characterized in that the transfer roller is divided at least in a range in which the cutting cooker is obliquely moved, and is divided into ϋ·7 mm or less, the elastic body is set, and the processing force of the cutting tool of the above 153242.doc 201134776 with respect to the flat glass is set to 1.6 to 8 〇Ν. In order to achieve the above object, the invention of the method for tangential processing of flat glass according to the present invention is to transport the flat glass by a plurality of conveying rollers disposed in a direction orthogonal to the conveying direction of the flat glass, and the surface is pressed by the cutting tool. The surface of the flat glass in the transport is moved obliquely with respect to the transport direction of the flat glass, and the tangent to the flat glass transport direction is processed on the surface of the flat glass; the tangential processing method is characterized in that The conveying roller is divided at least in a range in which the cutting tool is moved obliquely, and a traveling path of a supporting member that abuts against the flat glass surface between the divided conveying rollers is made by a traveling mechanism The support member is formed integrally with the cutting tool along the traveling path in the same direction and at the same speed, and when the surface of the flat glass is tangentially cut, the thickness of the flat glass is set to 〇7 mm or less, and the support member is set. For an elastomer comprising a soft elastic material, the above cutting tool is opposed to the upper Flat glass processing force is set to 16~8 square N, and by means of the above-described cutting tool on the flat glass processing tangent. The present invention is directed to a tangent processing apparatus and a tangential processing method for processing a tangent to a surface of a flat glass continuously conveyed by a conveyance roller in a direction orthogonal to a conveyance direction. According to the present invention, the plurality of conveying rollers that transport the sheet glass are divided into a range that is obliquely moved at least in a direction in which the cutting tool moves in the direction in which the sheet glass is conveyed, and each of the divided conveying rollers has a supporting member that abuts against the back surface of the flat glass. The path of travel. Further, the support portion 153242.doc 201134776 is traversed on the surface of the flat glass by the traveling mechanism by causing the support portion 153242.doc 201134776 to travel along the path of the cutting tool at the same direction and at the same speed. Thereby, the support member is always located below the cutting tool, so that the tangent can be stably processed on the surface of the flat glass continuously conveyed by the plurality of conveying rollers. Moreover, the thickness of the flat glass to be processed is 0.7 mm or less. When the glass is Jf-shaped, the branch member is set to an elastic body containing a soft elastic material. The processing force of the cutting tool with respect to the flat glass is set to 1.6 8.0 N, and the tangential line is processed on the surface of the flat glass by the cutting tool. When the support member is not an elastic body containing a soft elastic material and is a fixed plate of the I type, the hardness of the fixed plate causes the tool of the cutting tool to jump on the flat glass, thereby It is difficult to process continuous tangent on flat glass = surface. Also, the crack of the tangent is extended above the appropriate depth of the flat glass to make the flat glass fragile. If the Guardian force of the Thousand Plates is less than that of the flat glass, the depth of the tangential line will change, and the plate will be cut along the tangential line. (4) The flat glass is not cut or not. On the other hand, if the machining force exceeds the problem of the cutter glass due to the high machining force. Therefore, when the eight-piece glass plate is processed, the surface of the flat glass of the tangential day X is cut, and the cut and the two pieces are set to the elastic N containing the soft elastic material. Thereby, the processing force of the two flat glass is set to... The invention can be used for the thickness of the tangent of the surface of the flat glass broken by the conveying roller: 7: The shape of the flat surface of the crucible can be a strip shape, and the supporting member is made light. And make this rectangular. The support member is rotated from the bearing portion of the traveling mechanism, whereby the support member-surface is advanced by the frictional resistance against the back surface of the flat glass. Thereby, the contact resistance between the back surface of the flat glass and the branch member is reduced, so that scratches caused by the contact member contacting the back surface of the flat glass can be suppressed. Further, the roller-shaped branch member can be rotated by a rotating surface of a motor or the like. Thereby, even if the frictional resistance between the support member and the back surface of the flat glass is low, it is possible to suppress the roller-shaped support member from traveling while sliding without sliding over the back surface of the flat glass. Therefore, scratches caused by the support member contacting the back surface of the flat glass can be suppressed. In order to achieve the above object, the invention of the tangential processing of the flat glass of the present invention comprises: a support member which is fastened to the back surface of the flat glass; and a cutting tool which is (4) the flat glass set to the support member The surface is pressed and moved in to move the tangential line on the surface; the tangential processing device is characterized in that the thickness of the flat glass is set to be less than mm 'the support member is set to a body containing a soft elastic material' And the processing force of the above-mentioned (4) tool (4) in the above-mentioned flat plate is set to 1.6 to 8.0 N. In order to achieve the above object, the invention of the tangent processing method for flat glass of the present invention fixes the back surface of the flat glass to the support member, and cuts and presses the flat glass fixed to the support member. Forming a tangent to the surface; the tangent processing method is characterized in that the thickness of the flat glass is set to 0.7 mm or less, and the branch member is set to an elastic body containing a soft elastic material, The cutting tool is set to a h6 to n group 153242.doc 201134776 with respect to the processing force of the flat glass to process a tangent on the surface of the flat glass. The present invention relates to a tangential processing apparatus and a tangential processing method in which the f-plane of the flat glass is fixed to the support member of the (4) and the tangential line is processed on the surface of the fixed flat glass. According to the invention, the back surface of the flat glass is fixed on the supporting member, and the cutting tool (4) is advanced on the surface of the flat glass, thereby tangentially cutting the surface on the surface of the flat glass and the flat glass of the processing object. When the thickness of the flat glass is 0.7 mm or less, the branch member is set to an elastic body containing a soft elastic material, and the processing force of the cutting tool with respect to the flat glass is set to 1.6 8.0 N, and by the cutting tool The tangent is processed on the surface of the flat glass. Thus, the present invention can process a stable tangent to the surface of the flat glass fixed to the support member and having a thickness of ❹7 or less. As described above, the present invention is suitable for the case where the thickness of the flat glass is 0.7 mm or less, but it is also possible to stably cut the flat glass having a thickness (5) or less which is liable to cause a cut defect. That is, the present invention is more suitable for a flat plate having a thickness of 0.3 mm or less. Glass cutting. In the present invention, it is preferred that the support member has a hardness of 50 to 90. (According to JIS K6301 spring type a). The right support member has a hardness of less than 50. Then, due to the softness of the support member, the tangential processing portion of the flat glass that is pressed against the tool is caught in the support member' and the elastic restoring force of the elastically deformed support member is applied to the tangential processing portion. As a result, the excess force acts on the tangential processing portion, causing the tangential processing portion to be easily broken. On the other hand, if the support member is hard 153242.doc 201134776 degrees exceeds 90. When the cutting tool is advanced due to the hardness of the supporting member, the cutting tool jumps on the flat glass and it is difficult to process the continuous tangent on the surface of the flat glass. x, there is also the problem that the crack of the tangential line extends above the appropriate depth of the flat glass to cause the flat glass to be fragile. Therefore, according to the present invention, the hardness of the support member is 50 to 90. It can process more stable tangent on the surface of flat glass. [Effects of the Invention] According to the tangent processing apparatus for flat glass of the present invention and the tangent processing method for flat glass, the tangent can be stably processed on the surface of the flat glass having a thickness of not more than mm. [Embodiment] Hereinafter, preferred embodiments of the tangential processing apparatus and the tangential processing method of the flat glass of the present invention will be described with reference to the accompanying drawings. Fig. 1 is a cross-sectional view showing a flat glass manufacturing apparatus 丨 2 of a floating method using a tangential processing apparatus for flat glass of the first embodiment. In addition, the tangential processing apparatus 1 of the first embodiment is a device for processing a tangential line by using a glass ribbon (flat glass) 14 which is used as a glass substrate for a liquid crystal display and has a thickness of 0.7 mm or less. In the following description, the side opposite to the direction in which the glass ribbon 14 is conveyed in Fig. 1 is referred to as the downstream side (the direction of the arrow X in Fig. 1), and the side on the opposite side is referred to as the upstream side. In the flat glass manufacturing apparatus 12 shown in Fig. 1, a float bath 20, a tin tank 22, a slow cooling furnace 24, and a tangential processing apparatus 10 are disposed in this order from the upstream side to the downstream side. In the float bath 20, the glass ribbon 14 is formed by continuously supplying molten glass to the bath surface of the 153242.doc 201134776 of the molten tin 28. The glass ribbon 14 is pulled from the molten tin 28 by the lift tunnel 30 of the tin tank 22. Thereafter, the 'glass ribbon 14 passes through the inside of the tin tank 22' and is conveyed to the slow cooling furnace 24 by the slow cooling rolls 26, thereby gradually cooling to room temperature. The glass ribbon 14 that has passed through the slow cooling furnace 24 is cut in the width direction of the glass ribbon 14 by a tangential processing apparatus 1 and a breaking machine not shown. The breaking mechanism is a well-known device for cutting the glass ribbon 14 along a tangential line by applying a bending moment around a tangent machined on the surface of the frit 14 . Further, the tangential processing in the width direction of the glass ribbon 14 is performed in the front stage of the surface, and the surface of both ends in the width direction of the glass ribbon 14 is processed in the direction in which the glass ribbon 14 is conveyed in advance by a tangential processing device (not shown). The tangent to the direction of transport. Preferably, the cutting tool of the tangential processing device is disposed above the conveying roller. As will be described later, after the glass ribbon is cut in the width direction, both ends of the glass ribbon are cut by a tangential line in the advancing direction by a folding machine (not shown). From the viewpoint of stably processing the tangent of the conveyance direction on the glass ribbon 14 having a thickness of 〇·7 mm, the conveyance roller opposed to the cutting tool preferably has a support roller (support member) 48 to be described later. Hardness with the same hardness. Further, the processing force of the cutting tool with respect to the glass ribbon 14 is preferably set to be the same as the processing force of the cutting tool 44 to be described later. As shown in Fig. 2 and Fig. 3, the tangential processing device for cutting the tangent of the width direction of the glass ribbon 14 includes a plurality of conveying rollers 32, 34, 36, 38, 40, 42, a cutting tool 44, and a backup roller 48. The conveyance rollers 32 to 42 convey the glass ribbon 14' sent from the slow cooling furnace 24 (see Fig. 1) and are disposed in a direction orthogonal to the conveyance direction of the glass ribbon 14. Further, 153242.doc 201134776 The number of the transport rollers 32 to 42 is not limited to six. On the other hand, the cutting tool 44 is pressed against the surface of the glass ribbon 14 that is conveyed on the conveying rollers 32 to 42 and is opposed to the glass ribbon 4 by the traveling mechanism described later with respect to the glass ribbon 14 being conveyed. The transport direction moves diagonally. Thus, a tangent 4 which is orthogonal to the conveying direction of the glass ribbon 14 is processed onto the surface of the glass ribbon 14. Further, as the cutting tool 44, a super hard alloy wheel, a scribing cutter wheel or the like is used. Further, when the conveying speed of the glass ribbon 14 is V, the traveling speed of the cutting tool 44 is w, and the traveling angle of the cutting tool 44 with respect to the conveying direction of the glass ribbon 14 is 0, by the traveling speed w When it is set to w=v/cos0, the tangent 46 is processed in a direction orthogonal to the conveyance direction of the glass ribbon cassette 4. Here, it is assumed that the travel trace of the cutting tool 44 is A (refer to FIGS. 2 and 3) and is located below the travel trajectory A of the cutting tool 44, forming a useful position for the support roller 48 to travel along the travel trajectory a. The travel path c on which the trace b travels. Further, in order to form the traveling path c, the conveying rollers 32 to 42 are divided into two portions in the axial direction. In other words, the conveyance roller 32 is divided into the conveyance rollers 32a and 32B, and the conveyance report 34, the conveyance roller 36, the conveyance report 38, the conveyance report 40, and the conveyance roller 42 are divided into the conveyance rollers 34A and 34B and the conveyance roller 36A, respectively. 36B, conveyance rollers 38A and 38B, conveyance rollers 4A and 4B, and conveyance rollers 42A and 42B. Thereby, the traveling path C through which the backup roller 48 passes is formed. Further, the conveying rollers 32 to 42 are rollers disposed at least in a range in which the cutting tool 44 is obliquely moved. The backup roll 48 abuts against the back side of the glass ribbon 14 and is subjected to the processing force of the cutting tool 44 relative to the glass ribbon 14 via the glass ribbon 14, and is composed of an elastomer comprising a soft 153242.doc 12 201134776 elastic material. The backup roller 48 is advanced in the same direction and at the same speed as the cutting tool 44 by means of the walking mechanism 50 of the drawing. The traveling mechanism 50 is provided with a feed screw, and includes a motor 52, a feed screw 54 coupled to an output shaft of the motor 52, and a nut 58. A cylinder 60 constituting the advancing and retracting mechanism is mounted on the upper portion of the nut, and a retainer 66 that rotatably supports the support roller core via the shaft 64 is provided above the piston cymbal of the cylinder 6. Further, the motor 52 is controlled to be synchronized with the driving portion of the cutting tool 44 by a control unit (not shown). Therefore, according to the traveling mechanism 5A thus configured, the drive motor 52 moves the nut 58 to move the backup roller 48 to the standby position & position. At this time, the cutting tool 44 stands by at a position above the backup roller 48. Then, when the cutting tool 44 is lowered toward the glass ribbon 14 to start the tangential processing, the piston 62 is extended in synchronization with the movement of the slanting movement to move the backup roller 48 to the b position. Thereby, the backup roller 48 abuts against the back surface of the glass ribbon 14, and is subjected to the pressing force of the cutting tool 44 abutting on the surface thereof. Thereafter, the backup roller 48 is brought into contact with the back surface of the glass ribbon 14 by the feeding operation of the motor 52, and is moved to the position c of the processing end position at the same speed and at the same speed as the cutting tool material. Therefore, according to the tangential processing apparatus 10, as shown in Fig. 2, the glass ribbon "surfaces the tangential line 46. Further, the elastic supporting roller 48 is always located below the cutting tool 44, so that it can be transported by the roller; 32~42 The surface of the continuously conveyed glass ribbon 14 is stably processed by the tangential line 46. After the tangential line 46 is processed, the piston 62 is contracted, and the backup roller 牦 is moved to the position d retracted from the glass ribbon 14. Then, the backup roller is fed by the motor 153242 .doc -13- 201134776 and the reply moves to the original a position' and stands by until the next machining action. Further, similarly, the cutting tool 44 is retracted above the glass ribbon 14 at the end of the tangential processing and returns to the processing start position. Further, the traveling mechanism 50 is not limited to the feeding screw device, and may be a feeding mechanism including a rack and a pinion, or a belt driving mechanism. Further, the conveying rollers 32 to 42 have a diameter of 50 to 300 mm, preferably 15 to 25 mm. However, the tangential processing apparatus 1 of the first embodiment is formed by processing the tangential line 46 on the surface of the glass ribbon 14 having a thickness of 0.7 mm or less as described above. In order to process the tangential line 4 of the surface of the glass ribbon 14, the tangential processing apparatus 10 is provided in accordance with the following specifications. That is, the backup roller 48 is set to be composed of an elastic body containing a soft elastic material according to the tangential processing device 10, and the processing force of the cutting tool 44 with respect to the glass ribbon 14 is set to 1.6 to 8.0 N. In the case where the backup roller 48 is not a hard metal elastic body and is a hard metal roller, the cutting tool 44 jumps on the glass ribbon 14 when the cutting tool 44 is advanced due to the high hardness of the roller. It is thus difficult to machine a continuous tangent 46 on the surface of the glass ribbon 14. Moreover, the crack of the tangent extends beyond the appropriate depth of the flat glass to cause the flat glass to be brittle. If the cutting tool 44 is not working with respect to the glass ribbon 14, the processing force is not reached! 6 N, the depth of the tangent 46 relative to the glass ribbon 14 becomes shallow, and it is difficult for the fracture machine to machine a tangent 46 of a suitable depth on the surface of the glass ribbon 14. On the other hand, if the machining force exceeds 8.0 Torr, there is a problem that the cutting tool 44 pierces the glass ribbon 14 due to the high machining force. Thus, when the tangent line 46 I53242.doc 14 201134776 is machined on the surface of the glass ribbon 14 having a thickness of 0.7 mm or less, 'the support roller 48 is set as an elastic body containing a soft elastic material, and the cutting tool 44 is opposed to the glass ribbon 14 The processing force is set to 〖6~8 〇N is better. Therefore, the tangential processing device 10 according to the third embodiment set to such a specification can process the tangential line 46 which is stable on the surface of the glass ribbon μ having a thickness of 〇 7 mm or less which is continuously conveyed by the conveyance rollers 32 to 42. Further, the backup roller 48 is a rotating roller, so that the supporting roller 48 that is traveling travels while rotating while being in friction with the back surface of the glass ribbon 14. Thereby, the contact resistance between the back surface of the glass ribbon 14 and the backup roller 48 is lowered, so that the occurrence of scratches caused by the contact roller 48 contacting the back surface of the glass ribbon 14 can be suppressed. Further, the diameter of the roller can be the same as the diameter of the conveying rollers 32 to 42, and the size can be changed. Further, the support weir 48 can be moved while rotating by a rotating device such as a motor (not shown). However, the hardness of the backup roll 48 is preferably from 50 to 90. (According to JIS K6301 spring type A). If the support roller 48 has a hardness of less than 50. Then, the tangential processing portion of the glass ribbon 14 against which the cutting tool 44 is pressed is caught by the support roller 48 due to the softness of the support roller 48, and the elastic restoring force of the elastically deformed backup roller 48 is applied to the above-described tangential processing portion. Therefore, the excess force acts on the tangential processing portion, so that the tangential processing portion is easily broken. On the other hand, if the hardness of the backup roll 48 exceeds 9 。. The cutting tool 44 jumps over the glass ribbon 14 as the cutting tool 44 travels due to the stiffness of the backup roll 48, making it difficult to machine a continuous tangent 46 on the surface of the glass ribbon 14. Again, the tangential cracks extend above the appropriate depth of the flat glass to make the flat glass fragile. Thus, the hardness of the backup roll 48 is 50 to 90. , can be in the glass ribbon 14 153242.doc 15 201134776 尺冯稳定的切线46 — •, 丨tl u Figure 5 is a side view of the support roller 48 between the transport rollers 32A'32B side view, Figure 6 is from the figure Arrow view of the 5th line of observation. In Fig. 6, it is not preferable to apply a downward force (four) to the opposite edge portion a of the divided transporting members 32A, 32, and all of the dividing rollers are also the same, preferably the roller of the supporting roller 48. A chamfering process is applied to the edge portion b of both end portions. By the chamfering of the edge portions a, k, it is possible to prevent the edge of the roller from causing damage to the surface of the ribbon 14f. Fig. 7 is a side view showing the tangential processing device 7 of the second embodiment. The tangential processing device 7 〇孙# ####;;; the non-moving sheet (support member) 72 is fixed to the back surface of the plate glass having a thickness of 0.7 or less and is cut by the surface of the fixed flat glass 74. The tool 44 is placed in parallel with the tandem and then the tangent 46 required for treading on the surface. Similarly to the backup roll 48 (see Fig. 4), the sheet member 72 is an elastic body containing a soft elastic material, and preferably has a hardness of 50 to 90. . Further, the machining force of the knife 丨J tool 44 with respect to the plate glass 74 is also set to 16 to 8 〇N in the same manner. Thus, the tangential processing device 7 of the second embodiment is also the first embodiment. The tangential processing apparatus 10 similarly processes a stable tangent 46 on the surface of the flat glass 74 having a thickness of 〇7 _ or less. Further, as a support light 48 and a sheet material satisfying the above hardness, there is no case for the resin. , amine vinegar, fluororubber, chloroprene rubber, but the material is not limited thereto, as long as it is a soft elastic material, the hardness is %, the material will be better. (Example) I53242.doc 201134776 Manufacturing thickness Three kinds of flat plates of 0.1 mm, 〇·2 mm, and ο"mm were broken by 5 〇 ° and 7 分别, respectively. 9, 〇. The support roller branch is on the surface of the flat glass. On the surface of the flat glass, the scribing cutter wheel is pressed on the surface of the 4 with a specific force and travels at a speed of _ face/moving. The surface of the flat glass is machined and tangential. Further, the backup roller and the scribing cutter wheel move integrally in the same direction and at the same speed. Then, the flat glass was cut along the tangential line using a folding machine, and the cut state of the flat glass was evaluated in accordance with the following criteria. <Criteria for Judgment> A··· The sheet glass can be cut along a tangent line. B···It is difficult to break the flat glass, but the flat glass can be cut along the tangent. C···Cannot cut the flat glass or cut the flat glass along the tangent. Fig. 8 is a graph showing the evaluation results of a flat glass having a thickness of 〇··mm. For a thickness of 〇. 1 claw (7), the hardness of the flat glass on the backup roll is 5 〇. , 70°, 90. In the case where the machining force of the scribing cutter wheel with respect to the flat glass is 1.8 to 2.5 N, h6 to 2.5 N, and i 7 to 3 〇 N, the flat glass can be cut along the tangential line. Fig. 9 is a graph showing the evaluation results of the flat glass having a thickness of 〇. For flat glass having a thickness of 0.2 mm, the hardness of the backup roll is 5 〇. In the case of 70° or 90°, if the processing force of the scribing cutter wheel with respect to the flat glass is 3.3 to 5.4 N, h9 to 3.7 N, and 2·4 to 35 N, respectively, the flat glass can be cut along the tangential line. The figure is a graph showing the evaluation results of the flat glass with a thickness of 0_3 mm. 153242.doc -17- 201134776. For a flat glass of 0.3 mm, the hardness of the backup roll is 5 〇. In the case of If, if the processing force of the scribing cutter wheel relative to the flat glass is 3_〇~Λ Ν 3.2~8.0 Ν, 2.2~4.9 Ν, the flat glass can be cut along the tangential line. According to the evaluation results shown in FIG. 8 to FIG. 1B, it is found that the thinner the thickness of the flat glass, the smaller the appropriate reinforcing force of the scribing cutter wheel relative to the flat glass, and the narrower range of the appropriate processing force... There is a range of hardnesses of the backup rolls used to achieve proper tangential processing. Further, 'the following can also be confirmed: when the tangential line is applied to the surface of the flat glass having a thickness of 〇3 _ or less, the H-support roller (support member) is an elastic body containing a soft elastic material, and a scribing cutter wheel is provided (cutting The processing force of the tool) relative to the flat glass is preferably KkS.ON. Further, in the present embodiment, the flat glass having a thickness of 0.3 mm or less has been described', but good results can be obtained by using a flat glass having a thickness of 0.7 mm or less. (Comparative Example) When the hardness was changed to (10). When the tangential processing was performed on the surface of the flat glass in the same manner as in the example, the tangential crack was extended to a suitable depth of the flat glass so that the flat glass was not broken along the tangential line before being placed in the splicing machine. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a flat glass manufacturing apparatus of a π八凌, which is provided with a wire processing apparatus according to a first embodiment. Figure 2 is a plan view of the tangential processing apparatus shown in Figure 1. 153242.doc • 18· 201134776 Figure 3 is a perspective view of the tangential processing device shown in Figure 2. Figure 4 is a configuration diagram of the traveling mechanism of the cutting tool. Fig. 5 is a side view of the conveying roller in which the backup roller is located between the conveying rollers. Figure 6 is an arrow view taken from line A-A' of Figure 5. Fig. 7 is a side view of the tangential processing apparatus of the second embodiment. Fig. 8 is a graph showing the evaluation results of the flat glass having a thickness of 〇 1 mm. Fig. 9 is a graph showing the evaluation results of flat glass having a thickness of 0.2 mm. The figure shows the evaluation of the flat glass of 0.3 mm thickness. Figure 11 is a plan view of a prior tangential processing apparatus. A side view of the tangential processing apparatus shown in the drawings. [Main component symbol description] 1, 14 glass ribbon 2, 3 2 ~ 42 transfer pro 3, 44 cutting tool 4, 46 tangential line 5 gap between sacred Kunming 10 tangential processing device 12 flat glass manufacturing equipment 20 floating bath 22 tin tank 24 slow cooling furnace 26 slow cooling light 28 dazzle · melting tin 30 lifting roller 153242.doc -19- 201134776 32A~42A, 32B~42B divided conveying roller 48 support roller 50 traveling mechanism 52 motor 54 feed screw 58 nut 60 Cylinder 62 Piston 64 Axis 66 Holder 70 Tangential processing device 72 Sheet 74 Flat glass A, B Travel path a, b Edge portion C Travel path X Arrow 行进 Travel angle 153242.doc -20-