TWI714885B - Method for manufacturing glass substrate and glass substrate manufacturing apparatus - Google Patents
Method for manufacturing glass substrate and glass substrate manufacturing apparatus Download PDFInfo
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Abstract
本發明之課題在於在將成形後連續地延伸之玻璃板由複數個搬送輥夾持並一面搬送一面進行冷卻時,抑制玻璃板之斷裂。 本發明係關於一種玻璃板之製造方法及玻璃板之製造裝置。將使用溢流下拉法使熔融玻璃成形後之玻璃板之寬度方向之兩側的區域由設置於上述玻璃板之搬送方向之複數個搬送輥對夾持,且將上述玻璃板向下方向搬送而冷卻。於該冷卻時,在上述複數個搬送輥對之至少1個具有第1輥與第2輥之搬送輥對中,以上述第1輥相對於上述第2輥夾隔上述玻璃板以固定之力按壓之方式,控制上述第1輥相對於上述第2輥之相對位置,進而,根據上述第1輥及第2輥之磨耗之程度,間歇性地使上述第2輥向上述第1輥之方向強制性地位移。The subject of the present invention is to suppress the breakage of the glass plate when the glass plate continuously stretched after being formed is clamped by a plurality of conveying rollers and cooled while being conveyed. The present invention relates to a manufacturing method of a glass plate and a manufacturing device of the glass plate. The area on both sides of the width direction of the glass sheet after the molten glass is formed by the overflow down-draw method is clamped by a plurality of conveying roller pairs arranged in the conveying direction of the glass sheet, and the glass sheet is conveyed downward. cool down. During this cooling, in at least one of the plurality of conveying roller pairs having a first roller and a second roller, the first roller is used to sandwich the glass plate with respect to the second roller to fix the force The pressing method controls the relative position of the first roller with respect to the second roller, and further, according to the degree of abrasion of the first roller and the second roller, intermittently moves the second roller in the direction of the first roller Forced displacement.
Description
本發明係關於一種玻璃板之製造方法及玻璃板之製造裝置。The present invention relates to a manufacturing method of a glass plate and a manufacturing device of the glass plate.
於使用下拉法之玻璃板之製造方法中,在成形步驟中,從成形體將熔融玻璃溢流成形為連續地延伸之玻璃片(玻璃板)。繼而,於後續之冷卻步驟中,藉由將玻璃板由搬送輥對夾持且向下方向拉入,拉伸為所期望之厚度,以內部不產生應變之方式,再者以玻璃板不翹曲之方式,進行玻璃板之冷卻。繼而,將玻璃板切斷為特定之尺寸,經過洗淨及檢查後,將符合規定品質之玻璃板作為合格品而形成為液晶顯示裝置等顯示裝置用玻璃基板。In the manufacturing method of the glass plate using the down-draw method, in the forming step, the molten glass is overflow-shaped from the formed body into a continuously extending glass sheet (glass plate). Then, in the subsequent cooling step, the glass plate is clamped by a pair of conveying rollers and pulled in the downward direction, and stretched to the desired thickness without internal strain, and the glass plate is not warped The way of bending is to cool the glass plate. Then, the glass plate is cut to a specific size, and after washing and inspection, the glass plate that meets the prescribed quality is regarded as a qualified product and formed into a glass substrate for a display device such as a liquid crystal display device.
例如,已知有一種玻璃板之製造方法,具備:成形裝置,其將使玻璃原料熔解而產生之熔融玻璃使用溢流下拉法沿成形體之側壁流下而形成玻璃板;及緩冷裝置,其具備將利用成形所獲得之玻璃板之寬度方向之兩側的區域由設置於玻璃板之搬送方向之複數個搬送輥對夾持,且使玻璃板向下方向搬送後冷卻之緩冷爐;於緩冷爐內之冷卻時,能夠抑制於與由複數個搬送輥夾持之玻璃板之部分相鄰之相鄰區域產生波形狀之變形(專利文獻1)。 [先行技術文獻] [專利文獻]For example, there is known a method for manufacturing a glass plate, which includes: a forming device that uses an overflow down-draw method to flow the molten glass produced by melting the glass material down the side wall of the formed body to form a glass plate; and a slow cooling device, which Equipped with a slow cooling furnace that clamps the areas on both sides of the width direction of the glass plate obtained by forming by a plurality of conveying roller pairs arranged in the conveying direction of the glass plate, and conveys the glass plate downwards and then cools it; When cooling in the slow cooling furnace, it is possible to suppress the wave shape deformation in the adjacent area adjacent to the part of the glass plate clamped by a plurality of conveying rollers (Patent Document 1). [Advanced Technical Literature] [Patent Literature]
[專利文獻1]日本專利特開2013-136515號公報[Patent Document 1] Japanese Patent Laid-Open No. 2013-136515
[發明所欲解決之問題][The problem to be solved by the invention]
於上述製造方法中,藉由使已經成形之玻璃板之寬度方向之兩端部較之玻璃板之寬度方向之中央部更快地冷卻,進而,以玻璃板不產生塑性變形之方式,使張力在搬送方向作用於玻璃板,能夠抑制於與由搬送輥對夾持之玻璃板之部分相鄰之相鄰區域產生波形狀之變形。搬送輥對夾持玻璃板之兩側的面,一面以固定之力按壓玻璃板一面自旋轉而搬送玻璃板。藉此,能夠控制玻璃板之搬送速度,使張力在搬送方向作用於玻璃板。如此,為了使複數個搬送輥對之各者以固定之力按壓玻璃板,以各搬送輥對中之一個搬送輥(以後,稱為搬送輥A)相對於固定的另一個搬送輥(以後,稱為搬送輥B)以固定之力按壓玻璃板,進而按壓搬送輥B之方式,搬送輥A相對於搬送輥B之相對位置得到控制。In the above-mentioned manufacturing method, the both ends of the formed glass plate in the width direction are cooled faster than the center part in the width direction of the glass plate, and the glass plate is not plastically deformed to make the tension Acting on the glass plate in the conveying direction can suppress the wave shape deformation in the adjacent area adjacent to the part of the glass plate clamped by the conveying roller pair. The pair of conveying rollers clamps the surfaces on both sides of the glass plate, while pressing the glass plate with a fixed force, while self-rotating, conveys the glass plate. Thereby, the conveying speed of the glass plate can be controlled so that the tension acts on the glass plate in the conveying direction. In this way, in order to make each of the plural conveying roller pairs press the glass plate with a fixed force, one of the conveying roller pairs (hereinafter referred to as conveying roller A) is opposed to the other fixed conveying roller (hereafter, It is called conveying roller B) by pressing the glass plate with a fixed force, and then pressing the conveying roller B, the relative position of the conveying roller A with respect to the conveying roller B is controlled.
且說,近年來,緩冷爐內之溫度上升,再者,由於玻璃板之薄板化而搬送輥之旋轉速度上升,搬送輥較之以往更容易磨耗。為了將上述搬送輥A壓抵玻璃板之力維持為固定,而以維持搬送輥A相對於搬送輥B之相對位置之方式控制搬送輥A的位置,故而隨著搬送輥之不斷磨耗而搬送輥A的位置以離開未磨耗之初始狀態的搬送輥A的位置之方式發生偏移。配置此種搬送輥對之搬送輥對之排例如從成形體下端沿向筆直下方延伸之直線配置。排列於直線上之複數個搬送輥對若均以相同之程度磨耗,則相對於搬送輥B受到位置控制之搬送輥A即便相對於未磨耗之初始狀態的位置發生偏移,玻璃板之搬送路徑亦維持為直線狀。然而,於複數個搬送輥對之磨耗之程度不均之情形時,產生如下情形:由於搬送輥A、B之磨耗與在搬送方向相鄰之搬送輥A、B之磨耗之程度的差異,使被夾持而搬送之玻璃板之搬送路徑彎曲。該搬送路徑之彎曲存在成為玻璃板之搬送中之斷裂之起點之情形,再者存在對玻璃板之成形品質帶來影響之情形。 再者,若搬送輥A、B不斷磨耗,則搬送輥A、B之表面成為微小凹凸之形狀,於與該微小凹凸接觸之玻璃板之表面,容易產生成為玻璃板之斷裂之起點的傷痕。尤其,由於上述玻璃板之搬送路徑之彎曲與上述傷痕,而使玻璃板之斷裂之頻度增大。In addition, in recent years, the temperature in the slow cooling furnace has risen, and the rotation speed of the conveying roller has increased due to the thinning of the glass plate, and the conveying roller is more likely to wear out than before. In order to keep the force of the conveying roller A against the glass plate constant, the position of the conveying roller A is controlled by maintaining the relative position of the conveying roller A with respect to the conveying roller B. Therefore, the conveying rollers are constantly worn out The position of A is shifted away from the position of the conveying roller A in the initial state without being worn. The row of the conveying roller pair in which such a conveying roller pair is arranged is arranged along a straight line extending straight downward from the lower end of the molded body, for example. If a plurality of conveying roller pairs arranged on a straight line are worn to the same degree, the conveying roller A, which is positionally controlled with respect to the conveying roller B, is shifted from the initial position of the unworn, conveying path of the glass plate Also maintained as a straight line. However, when the degree of wear of a plurality of conveying roller pairs is uneven, the following situation occurs: due to the difference in the degree of abrasion of the conveying rollers A and B and the degree of abrasion of the adjacent conveying rollers A and B in the conveying direction, The conveying path of the glass plate being clamped and conveyed is curved. The curvature of the conveying path may become the starting point of the break in the conveyance of the glass plate, and may also affect the forming quality of the glass plate. Furthermore, if the conveying rollers A and B are constantly worn, the surfaces of the conveying rollers A and B will be in the shape of tiny concavities and convexities, and the surface of the glass plate contacting the tiny concavities and convexities will easily produce scratches that become the starting point of the glass plate. In particular, the frequency of breakage of the glass plate increases due to the bending of the conveying path of the glass plate and the scratches.
因此,本發明之目的在於提供一種能夠於將成形後連續地延伸之玻璃板由複數個搬送輥夾持並搬送時,抑制玻璃板之斷裂及玻璃板之品質惡化的影響之玻璃板之製造方法及玻璃板之製造裝置。 [解決問題之技術手段]Therefore, the object of the present invention is to provide a glass plate manufacturing method capable of suppressing the influence of the breakage of the glass plate and the deterioration of the quality of the glass plate when the glass plate continuously stretched after being formed is clamped and transported by a plurality of transport rollers And glass plate manufacturing equipment. [Technical means to solve the problem]
本發明之一態樣為玻璃板之製造方法。該玻璃基板之製造方法具有: 成形步驟,其係使用溢流下拉法使熔融玻璃成形,而形成玻璃板;及 搬送步驟,其係將上述玻璃板之寬度方向之兩側的區域由設置於上述玻璃板之搬送方向之複數個搬送輥對夾持,且將上述玻璃板向下方向搬送。 於上述複數個搬送輥對之至少1個具有第1輥與第2輥之搬送輥對中,以上述第1輥相對於上述第2輥夾隔上述玻璃板以固定之力按壓之方式,控制上述第1輥相對於上述第2輥之相對位置,進而,根據上述第1輥及第2輥之磨耗之程度,間歇性地使上述第2輥向上述第1輥之方向強制性地位移。One aspect of the present invention is a method of manufacturing a glass plate. The manufacturing method of the glass substrate has: The forming step, which uses the overflow down-draw method to shape the molten glass to form a glass sheet; and The conveying step involves clamping the regions on both sides of the width direction of the glass plate by a plurality of conveying roller pairs arranged in the conveying direction of the glass plate, and conveying the glass plate downward. In at least one conveying roller pair having a first roller and a second roller among the plurality of conveying roller pairs, the first roller is pressed against the second roller with a fixed force while sandwiching the glass plate. The relative position of the first roller with respect to the second roller, and further, the second roller is intermittently forcibly displaced in the direction of the first roller according to the degree of wear of the first roller and the second roller.
較佳為,上述第2輥以將使上述第2輥位移之後的上述第1輥之旋轉軸中心與上述第2輥之旋轉軸中心連接而成之線段二等分的中點接近將使無上述磨耗時之上述第1輥之旋轉中心與上述第2輥之旋轉軸中心連接而成之線段二等分的中點之方式位移。Preferably, the second roller is close to the midpoint of a line segment formed by connecting the center of the rotation axis of the first roller and the center of the rotation axis of the second roller after displacing the second roller so that there is no The center of rotation of the first roller and the center of the rotation axis of the second roller during the abrasion are displaced in the manner of the midpoint of a bisecting line segment formed by connecting the center of the rotation axis of the second roller.
較佳為,於使上述第1輥及上述第2輥為搬送輥對A時,上述複數個搬送輥對包含相對於上述搬送輥對A在上述搬送方向相鄰之具有第3輥與第4輥之搬送輥對B,以上述第3輥相對於上述第4輥夾隔上述玻璃板以固定之力按壓之方式,控制上述第3輥相對於上述第4輥之相對位置,進而,以根據上述第3輥及第4輥之磨耗之程度,間歇性地使上述第4輥向上述第3輥之方向強制性地位移之方式,構成上述搬送輥對B, 上述第2輥以將使位移之後的上述第1輥之旋轉軸中心與上述第2輥之旋轉軸中心連接而成之線段二等分的中點於上述線段之延伸方向上之位置接近將使上述第3輥之旋轉軸中心與上述第4輥之旋轉軸中心連接而成之線段二等分的中點於上述延伸方向上的位置之方式位移。 較佳為,上述第3輥及上述第4輥相對於上述第1輥及上述第2輥位於上述搬送方向上游側。 較佳為,上述第1輥及上述第2輥之磨耗之程度係以將使上述第2輥強制性地位移時的上述第1輥之旋轉中心軸與上述第2輥之旋轉中心軸連接而成之線段之中點之位置作為基準位置,根據當前之上述中點之位置相對於上述基準位置之偏移量而求出。 較佳為,上述第1輥及上述第2輥之磨耗之程度係根據使上述第2輥強制性地位移時起的、採用上述第1輥及上述第1輥之上述玻璃板之搬送累計時間而求出。Preferably, when the first roller and the second roller are the conveying roller pair A, the plural conveying roller pairs include a third roller and a fourth roller adjacent to the conveying roller pair A in the conveying direction. The conveying roller pair B of the roller controls the relative position of the third roller with respect to the fourth roller in such a manner that the third roller sandwiches the glass plate with the fourth roller and presses with a fixed force, and further, according to The degree of wear of the third roller and the fourth roller intermittently compulsorily displaces the fourth roller in the direction of the third roller to form the transport roller pair B, For the second roller, the midpoint of the line segment formed by connecting the center of the rotation axis of the first roller and the center of the rotation axis of the second roller after the displacement is close to the position in the extending direction of the line segment will make The center of the rotation axis of the third roller and the center of the rotation axis of the fourth roller are connected in such a way that the midpoint of the halved line segment is displaced in the position in the extending direction. Preferably, the third roller and the fourth roller are located on the upstream side in the conveying direction with respect to the first roller and the second roller. Preferably, the degree of wear of the first roller and the second roller is such that the rotation center axis of the first roller and the rotation center axis of the second roller when the second roller is forcibly displaced The position of the midpoint of the completed line segment is used as the reference position, which is calculated based on the offset of the current position of the midpoint relative to the reference position. Preferably, the degree of abrasion of the first roller and the second roller is based on the cumulative time of conveyance of the glass plate using the first roller and the first roller from when the second roller is forcibly displaced And find out.
本發明之另一態樣為玻璃板之製造裝置。該製造裝置具有: 成形裝置,其使用溢流下拉法使熔融玻璃成形,而成形玻璃板; 冷卻裝置,其將上述玻璃板之寬度方向之兩側的區域由設置於上述玻璃板之搬送方向之複數個搬送輥對夾持,且使上述玻璃板向下方向搬送而冷卻;及 控制裝置,其控制上述搬送輥對之位置。 上述控制裝置以如下方式構成:於上述複數個搬送輥對之至少1個具有第1輥與第2輥之搬送輥對中,以上述第1輥相對於上述第2輥夾隔上述玻璃板以固定之力按壓之方式,控制上述第1輥相對於上述第2輥之相對位置,進而,上述控制裝置以根據上述第1輥及第2輥之磨耗之程度,間歇性地使上述第2輥向上述第1輥之方向強制性地位移之方式構成。Another aspect of the present invention is a glass plate manufacturing device. The manufacturing device has: A forming device, which uses an overflow down-draw method to shape the molten glass to shape the glass sheet; A cooling device, which clamps the areas on both sides of the width direction of the glass plate by a plurality of conveying roller pairs arranged in the conveying direction of the glass plate, and conveys the glass plate downward to cool; and A control device that controls the position of the above-mentioned conveying roller pair. The control device is configured as follows: in at least one conveying roller pair having a first roller and a second roller among the plurality of conveying roller pairs, the glass plate is sandwiched by the first roller relative to the second roller. The method of pressing with a fixed force controls the relative position of the first roller with respect to the second roller. Furthermore, the control device intermittently causes the second roller to intermittently according to the degree of wear of the first roller and the second roller. It is configured to forcibly shift in the direction of the above-mentioned first roller.
較佳為,上述控制裝置以如下方式控制上述第2輥,即,以將使上述第2輥位移之後的上述第1輥之旋轉軸中心與上述第2輥之旋轉軸中心連接而成之線段二等分的中點接近將使無上述磨耗時之上述第1輥之旋轉中心與上述第2輥之旋轉軸中心連接而成之線段二等分的中點之方式位移。 [發明之效果]Preferably, the control device controls the second roller in a manner that connects the center of the rotation axis of the first roller and the center of the rotation axis of the second roller after the second roller is displaced The midpoint of the halves is close to the midpoint of the line segment formed by connecting the rotation center of the first roller and the rotation axis center of the second roller when there is no wear. [Effects of Invention]
根據之玻璃板之製造方法及玻璃板之製造裝置,能夠於將成形後連續地延伸之玻璃板由複數個搬送輥夾持並搬送時,抑制玻璃板之斷裂及玻璃板之品質惡化的影響。According to the glass plate manufacturing method and the glass plate manufacturing device, it is possible to suppress the influence of the breakage of the glass plate and the deterioration of the quality of the glass plate when the continuously stretched glass plate is clamped and conveyed by a plurality of conveying rollers.
以下,對一實施形態之玻璃板之製造方法及玻璃板之製造裝置詳細地進行說明。於一實施形態之玻璃板之製造方法中,例如製造TFT(thin film transistor,薄膜電晶體)顯示器用之玻璃基板。玻璃板係使用溢流下拉法來製造。以下,一面參照附圖,一面對一實施形態之玻璃板之製造方法進行說明。Hereinafter, the manufacturing method of the glass plate and the manufacturing apparatus of the glass plate of one Embodiment are demonstrated in detail. In the method of manufacturing a glass plate of an embodiment, for example, a glass substrate for a TFT (thin film transistor) display is manufactured. The glass plate is manufactured using the overflow down-draw method. Hereinafter, a method of manufacturing a glass plate of an embodiment will be described with reference to the drawings.
(1)玻璃板之製造方法之概要
首先,參照圖1及圖2,對玻璃板之製造方法中所包含之複數個步驟及複數個步驟中所使用之玻璃板之製造裝置100進行說明。玻璃板之製造方法如圖1所示,主要包含熔融步驟S1、澄清步驟S2、成形步驟S3、冷卻步驟S4、及切斷步驟S5。(1) Outline of manufacturing method of glass plate
First, referring to FIGS. 1 and 2, a plurality of steps included in a method of manufacturing a glass plate and a glass
熔融步驟S1係玻璃之原料熔融的步驟。玻璃之原料在以成為所期望之組成之方式調合之後,如圖2所示,投入至配置於上游的熔融裝置11。玻璃原料例如包括SiO2
、Al2
O3
、B2
O3
、CaO、SrO、BaO等組成。具體而言,使用玻璃應變點為660℃以上之玻璃原料。玻璃之原料於熔融裝置11中熔融,成為熔融玻璃FG。熔融溫度可根據玻璃之種類而調整。於本實施形態中,玻璃原料係以1500℃~1650℃熔融。熔融玻璃FG通過上游管23被送至澄清裝置12。The melting step S1 is a step of melting the raw materials of the glass. After the raw materials of the glass are blended so as to have a desired composition, as shown in FIG. 2, they are put into the
澄清步驟S2係進行熔融玻璃FG中之氣泡之去除的步驟。於澄清裝置12內被去除氣泡之熔融玻璃FG之後會通過下游管24,送向成形裝置40。The clarification step S2 is a step for removing bubbles in the molten glass FG. The molten glass FG from which bubbles have been removed in the
成形步驟S3係將熔融玻璃FG成形為作為薄片狀之玻璃之玻璃片SG的步驟。具體而言,將熔融玻璃FG連續地供給至成形裝置40中所包含之成形體41之後,從成形體41之槽溢流。已溢流之熔融玻璃FG沿成形體41之表面流下。熔融玻璃FG繼而於成形體41之下端部41a合流而成形為玻璃片SG。玻璃片SG具有位於寬度方向之端之側部(邊料、端部),及由側部夾持之寬度方向之中央區域。玻璃片SG之側部之板厚較之中央區域之板厚更厚地成形。玻璃片SG之中央區域為成為包括固定之板厚的最終產品之玻璃板之區域。於想要使玻璃片SG之中央區域之板厚成形為0.4 mm以下之薄板之情形時,玻璃片SG之側部之板厚較之以往更薄地成形。The forming step S3 is a step of forming the molten glass FG into a glass sheet SG which is a sheet-like glass. Specifically, after the molten glass FG is continuously supplied to the molded
冷卻步驟S4係將玻璃片SG冷卻(緩冷)的步驟。玻璃片SG經過冷卻步驟S4冷卻為接近室溫之溫度。此外,根據冷卻步驟S4中之冷卻之狀態,決定玻璃板之厚度(板厚)、玻璃板之翹曲量、及玻璃板之應變量。The cooling step S4 is a step of cooling (slow cooling) the glass sheet SG. The glass sheet SG is cooled to a temperature close to room temperature through the cooling step S4. In addition, according to the cooling state in the cooling step S4, the thickness of the glass plate (plate thickness), the amount of warpage of the glass plate, and the amount of strain of the glass plate are determined.
切斷步驟S5係將成為接近室溫之溫度之玻璃片SG切斷為特定之大小的步驟。The cutting step S5 is a step of cutting the glass sheet SG that has reached a temperature close to room temperature into a specific size.
此外,切斷為特定之大小之玻璃片SG繼而經過端面加工等步驟。以下,將玻璃片SG稱為玻璃板。In addition, the glass sheet SG cut into a specific size is then subjected to steps such as end surface processing. Hereinafter, the glass sheet SG is referred to as a glass plate.
以下,參照圖3~圖5,對玻璃板之製造裝置100中所包含之成形裝置40之構成進行說明。此外,於本實施形態中,所謂玻璃片SG之寬度方向,係指與玻璃片SG流下之方向(流動方向)交叉的方向,亦即,水平方向。Hereinafter, the configuration of the forming
(2)成形裝置之構成
首先,圖3及圖4表示成形裝置40之概略構成。圖3係成形裝置40之剖視圖。圖4係成形裝置40之側視圖。(2) The composition of the forming device
First, FIGS. 3 and 4 show a schematic configuration of the forming
成形裝置40具有供玻璃片SG通過之通路,及包圍通路之空間。包圍通路之空間係由溢流腔室20、成形腔室30、及冷卻腔室80構成。The forming
溢流腔室20係將從澄清裝置12送來之熔融玻璃FG成形為玻璃片SG之空間。玻璃片SG係連續地延伸之玻璃板。The
成形腔室30配置於溢流腔室20之下方,係用來調整玻璃片SG之厚度及翹曲量的空間。於成形腔室30中,執行冷卻步驟之一部分。熔融玻璃FG沿成形體41之表面流下,於成形體41之下端部41a合流而成形為玻璃片SG,於較之成形體41之下端部41a靠下游的位置,玻璃片SG之溫度逐漸下降。成形腔室30相對於溢流腔室20而由間隔部件50劃分。The forming
冷卻腔室80配置於成形腔室30之下方,係用來調整玻璃片SG之應變量的空間。具體而言,於冷卻腔室80中,通過成形腔室30內之玻璃片SG經過緩冷點、玻璃應變點,冷卻至室溫附近之溫度為止。而且,冷卻腔室80相對於成形腔室30而由隔熱部件80a劃分,此外,冷卻腔室80之內部由隔熱部件80b而劃分為複數個空間。The cooling
再者,成形裝置40主要包括成形體41、間隔部件50、冷卻輥51、溫度調整單元60、下拉輥81a~81g、加熱器82a~82g、及切斷裝置90。進而,成形裝置40具備控制裝置500(參照圖5)。控制裝置500控制成形裝置40中所包含之各構成之驅動部。冷卻輥51、下拉輥81a~81g係將玻璃板之寬度方向之兩側的區域設置於玻璃板之搬送方向,使玻璃板向下方向搬送的搬送輥。In addition, the
以下,對成形裝置40中所包含之各構成詳細地進行說明。Hereinafter, each configuration included in the
(2-1)成形體
成形體41設置於溢流腔室20內。成形體41藉由使熔融玻璃FG從槽溢流,而將熔融玻璃FG成形為薄片狀之玻璃板(玻璃片SG)。(2-1) Formed body
The molded
如圖3所示,成形體41具有剖面形狀為大致五邊形之形狀(類似於楔形之形狀)。大致五邊形之前端相當於成形體41之下端部41a。As shown in FIG. 3, the formed
再者,成形體41於第1端部具有流入口42(參照圖4)。流入口42與上述之下游管24連接,從澄清裝置12流出之熔融玻璃FG從流入口42流入至成形體41。於成形體41形成有槽43。槽43沿成形體41之長邊方向延伸。具體而言,槽43從第1端部向作為第1端部的相反側的端部的第2端部延伸。更具體而言,槽43沿圖4之左右方向延伸。槽43係以流入口42附近最深,且隨著接近第2端部而逐漸變淺之方式形成。流入至成形體41之熔融玻璃FG從成形體41之一對頂部41b、41b溢流,一面沿成形體41之一對側面(表面)41c、41c一面流下。繼而,熔融玻璃FG於成形體41之下端部41a合流而成為玻璃片SG。In addition, the molded
此時,成形體41之下端部41a之玻璃片SG的液相溫度為1100℃以上,液相黏度為2.5×105
poise以上,更較佳為,液相溫度為1160℃以上,液相黏度為1.2×105
poise以上。再者,使成形體41之下端部41a之玻璃片SG之側部(邊料、端部)之黏度未達105.7
Poise。At this time, the liquid phase temperature of the glass sheet SG at the
(2-2)間隔部件
間隔部件50係將從溢流腔室20向成形腔室30之熱的移動遮斷的部件。間隔部件50配置於熔融玻璃FG之合流點的附近。再者,如圖3所示,間隔部件50配置於熔融玻璃FG於合流點合流而形成之玻璃片SG之厚度方向兩側。間隔部件50為隔熱材。間隔部件50藉由將熔融玻璃FG之合流點之上側氣體環境及下側氣體環境間隔,而將從間隔部件50之上側向下側之熱的移動遮斷。(2-2) Spacer parts
The
(2-3)冷卻輥(搬送輥)
冷卻輥51設置於成形腔室30內。更具體而言,冷卻輥51配置於間隔部件50之正下方。再者,冷卻輥51配置於玻璃片SG之厚度方向兩側,且為玻璃片SG之寬度方向兩側。配置於玻璃片SG之厚度方向兩側的冷卻輥51成對地動作。亦即,玻璃片SG之兩側部(寬度方向兩端部)由兩對冷卻輥51、51、・・・以固定之力夾持。(2-3) Cooling roller (conveying roller)
The cooling
冷卻輥51由通過其內部之空冷管而空冷。冷卻輥51與玻璃片SG之側部(邊料、端部)R、L接觸,利用導熱而使玻璃片SG之側部(邊料、端部)R、L急冷(急冷步驟)。接觸於冷卻輥51之玻璃片SG之側部R、L之黏度為特定值(具體而言為109.0
poise)以上。The
冷卻輥51由冷卻輥驅動馬達390(參照圖5)而旋轉驅動。冷卻輥51作為將玻璃片SG之側部R、L冷卻,並且使玻璃片SG向下方下降的搬送輥而發揮功能。The cooling
(2-4)溫度調整單元
溫度調整單元60設置於成形腔室30內,係將玻璃片SG冷卻至緩冷點附近為止的單元。溫度調整單元60具有複數個冷卻單元61~65。複數個冷卻單元61~65配置於玻璃片SG之寬度方向及玻璃片SG之流動方向。具體而言,複數個冷卻單元61~65包含中央區域冷卻單元61~63及側部冷卻單元64、65。中央區域冷卻單元61~63將玻璃片SG之中央區域CA空冷。此處,所謂玻璃片SG之中央區域,係指玻璃片SG之寬度方向中央部分,且包含玻璃片SG之有效寬度及其附近的區域。換言之,玻璃片SG之中央區域為由玻璃片SG之兩側部(兩邊料、兩端部)R、L夾持之部分。中央區域冷卻單元61~63沿流動方向配置於與玻璃片SG之中央區域CA之表面對向的位置。(2-4) Temperature adjustment unit
The
(2-5)下拉輥(搬送輥)
下拉輥(搬送輥)81a~81g設置於冷卻腔室80內,將通過成形腔室30內之玻璃片SG向玻璃片SG之流動方向下降。下拉輥81a~81g於冷卻腔室80之內部,沿流動方向夾隔特定之間隔而配置。下拉輥81a~81g在玻璃片SG之厚度方向兩側(參照圖3)、及玻璃片SG之寬度方向兩側(參照圖4)配置複數個。亦即,下拉輥81a~81g一面以固定之力把持玻璃片SG之寬度方向之兩側部(兩邊料、兩端部)R、L、及玻璃片SG之厚度方向之兩側一面使玻璃片SG向下方下降。(2-5) Pull-down roller (conveying roller)
The pull-down rollers (conveying rollers) 81a to 81g are installed in the cooling
下拉輥81a~81g由下拉輥驅動馬達391(參照圖5)而驅動。再者,下拉輥81a~81g相對於玻璃片SG在內側旋轉。關於下拉輥81a~81g之周速度,越位於下游側則下拉輥之周速度越大。亦即,複數個下拉輥81a~81g中,下拉輥81a之周速度最小,下拉輥81g之周速度最大。配置於玻璃片SG之厚度方向兩側的下拉輥81a~81g成對地動作,成對之下拉輥81a、81a、・・・使玻璃片SG向下方向下降。The pull-down
(2-6)加熱器
加熱器82(82a~82g)設置於冷卻腔室80之內部,調整冷卻腔室80之內部空間之溫度。具體而言,加熱器82a~82g於玻璃片SG之流動方向及玻璃片SG之寬度方向配置複數個。更具體而言,於玻璃片SG之流動方向配置7個加熱器,在玻璃片之寬度方向配置7個加熱器。配置於寬度方向之7個加熱器對於包含下拉輥81a~81g夾持之夾持區域之玻璃片SG之中央區域CA、與玻璃片SG之側部(邊料、端部)R、L分別進行熱處理。加熱器82a~82g由下述控制裝置500控制輸出。藉此,通過冷卻腔室80內部之玻璃片SG附近之氣體環境溫度得到控制。藉由利用加熱器82a~82g控制冷卻腔室80內之氣體環境溫度,來進行玻璃片SG之溫度控制。再者,藉由溫度控制,玻璃片SG從黏性區域經過黏彈性區域向彈性區域推移。如此,藉由加熱器82a~82g之控制,於冷卻腔室80中,玻璃片SG之溫度從緩冷點附近之溫度冷卻至室溫附近之溫度為止。此處,緩冷點為黏度成為1013
Poise時之溫度,此處,例如為715.0℃。(2-6) Heater The heater 82 (82a-82g) is installed inside the cooling
(2-7)切斷裝置
切斷裝置90將於冷卻腔室80內冷卻至室溫附近之溫度為止之玻璃片SG切斷為特定之尺寸。切斷裝置90以特定之時間間隔將玻璃片SG切斷。藉此,玻璃片SG成為複數個玻璃板。切斷裝置90由切斷裝置驅動馬達392(參照圖5)而驅動。
如此,於利用玻璃板之製造裝置100製造玻璃板時,實施成形步驟及搬送步驟,上述成形步驟係使用溢流下拉法由熔融玻璃FG成形為玻璃片SG,上述搬送步驟係將玻璃板之寬度方向之兩側的區域由設置於玻璃片SG的搬送方向之複數個搬送輥對夾持,且將玻璃片SG向下方向搬送。於本實施形態中,在搬送步驟中進行玻璃片之冷卻。(2-7) Cutting device
The cutting
(2-8)控制裝置
控制裝置500由CPU(Central Processing Unit,中央處理單元)、RAM(Random Access Memory,隨機存取記憶體)、ROM(Read Only Memory,唯讀記憶體)、及硬碟等構成,且對玻璃板之製造裝置100中所包含之各種設備進行控制。圖5係表示一實施形態中之控制裝置500之構成之一例的框圖。(2-8) Control device
The
具體而言,如圖5所示,控制裝置500接收玻璃板之製造裝置100中所包含之各種傳感器(例如,熱電偶380、輥壓力傳感器382)或開關(例如,主電源開關381)等之信號,對溫度調整單元60、加熱器82a~82g、冷卻輥驅動馬達390、下拉輥驅動馬達391、切斷裝置驅動馬達392、冷卻輥位置控制用馬達393、及下拉輥位置控制用馬達394a~394g等進行控制。冷卻輥位置控制用馬達393係為了進行冷卻輥51之位置控制而使冷卻輥51的位置移動的馬達,下拉輥位置控制用馬達394a~394g係為了進行下述下拉輥81a~81g之位置控制而使下拉輥81a~81g的位置移動的馬達。此外,輥壓力傳感器382係測量冷卻輥51、下拉輥81a~81g按壓玻璃片SG之力的傳感器。輥壓力傳感器382設置於冷卻輥51、下拉輥81a~81g之各者的位置。Specifically, as shown in FIG. 5, the
控制裝置500於將搬送至冷卻腔室80之玻璃片SG冷卻時,以實現玻璃片SG之搬送路徑之各位置中之寬度方向之溫度分佈成為目標之溫度分佈(temperature profile)之方式,根據熱電偶380之測量結果,調整溫度調整單元60及加熱器82a~82g之溫度。藉此,能夠抑制玻璃片SG之波形狀之變形、玻璃片SG之應變及翹曲。
控制裝置500進而使用冷卻輥位置控制用馬達393及下拉輥位置控制用馬達394a~394g進行冷卻輥51及下拉輥81a~81g之位置控制。以下,對該位置控制進行說明。When the
(3)搬送輥(冷卻輥51、下拉輥81a~81g)之位置控制
冷卻輥51及下拉輥81a~81g如圖6(a)~(c)所示於玻璃片SG之厚度方向受到位置控制。以後,由於冷卻輥51及下拉輥81a~81g受到相同的位置控制,故而於以後之說明中,將各對冷卻輥51及下拉輥81a~81g記載為第1輥A1與第2輥B1對,或者進而記載為第3輥A2與第4輥B2對。圖6(a)~(c)係對控制裝置500進行之位置控制之一例進行說明的圖。(3) Position control of the conveying rollers (cooling
控制裝置500根據輥壓力傳感器382之測量結果,於具有第1輥A1與第2輥B1之搬送輥對中,以第1輥A1相對於第2輥B1夾隔玻璃片SG以固定之力按壓之方式,控制第1輥A1相對於第2輥B1之相對位置。於此控制中,第2輥B1之位置被固定。控制裝置500進而根據第1輥A1及第2輥B1之磨耗之程度,間歇性地使第2輥B1向第1輥A1之方向強制性地位移。Based on the measurement result of the
圖6(a)表示第1輥A1與第2輥B1之搬送輥對與相對於該搬送輥對而在搬送路徑上相鄰之第3輥A2與第4輥B2之搬送輥對(第1~4輥之直徑均相同)均未磨耗之初始狀態。由於第1輥A1與第2輥B1之搬送輥對、與第3輥A2與第4輥B2之搬送輥對均以進行上述位置控制之方式構成,故而於圖6(a)中,由於均未磨耗,故而玻璃片SG之搬送路徑直線狀地延伸。Fig. 6(a) shows the pair of conveying rollers of the first roller A1 and the second roller B1 and the pair of conveying rollers of the third roller A2 and the fourth roller B2 adjacent to the conveying roller pair on the conveying path (the first ~4 rolls have the same diameter) in the initial state without abrasion. Since the conveying roller pair of the first roller A1 and the second roller B1, and the conveying roller pair of the third roller A2 and the fourth roller B2 are all configured to perform the above-mentioned position control, in Figure 6(a), due to both Since it is not worn, the conveyance path of the glass sheet SG extends linearly.
圖6(b)表示搬送輥對之磨耗有不均,且第1輥A1及第2輥B1之磨耗大於第3輥A2及第4輥B2之磨耗之情形。亦即,表示第1輥A1及第2輥B1的直徑小於第3輥A2及第4輥B2的直徑的狀態。於該情形時,為了第1輥A1相對於玻璃片SG及第2輥B1,以固定之力F按壓,如圖6(b)所示,與第3輥A2相比,移動至圖6(b)中(玻璃片SG之厚度方向)右側的位置。因此,玻璃片SG之搬送路徑在第3輥A2與第4輥B2之搬送輥對、與第1輥A1與第2輥B1之搬送輥對之間彎曲。該彎曲容易成為玻璃片SG的斷裂之起點。
因此,控制裝置500如圖6(c)所示,根據第1輥A1及第2輥B1之磨耗之程度,間歇性地使第2輥B1向第1輥A1的方向(玻璃片SG之厚度方向)強制性地位移。例如,於磨耗之程度超過容許範圍之情形時,使第2輥B1向第1輥A1的方向強制性地位移。強制性地位移之位移量為預先規定的量。藉此,能夠使容易成為玻璃片SG之斷裂之起點的搬送路徑之彎曲接近直線狀。第1輥A1、第2輥B1處於玻璃片SG之溫度為玻璃應變點以下之區域。玻璃應變點為黏度成為1014.5
Poise時之玻璃片SG之溫度。於玻璃應變點以下之區域中,玻璃片SG成為彈性體,容易相對於變形而斷裂,故而較佳為搬送路徑之彎曲之程度較小。於第1輥A1、第2輥B1處於玻璃片SG之溫度較之玻璃應變點高的區域之情形時,玻璃片SG為黏性體或黏彈性體,故而即便搬送路徑彎曲亦不易成為斷裂之起點。因此,較佳為,於玻璃片SG之溫度為玻璃應變點以下之區域中,間歇性地使第2輥B1朝向第1輥A1強制性地位移。
因此,利用由玻璃片SG之溫度處於玻璃應變點以下之區域的第1輥A1、第2輥B1而進行的下述位置控制(位移量Δ的強制性位移),能夠抑制玻璃片SG的斷裂。
於上述實施形態中,第1輥A1、第2輥B1設置於玻璃片SG之溫度成為玻璃應變點以下之區域(僅稱為玻璃應變點以下之區域),但根據另一實施形態,亦可以設置於玻璃片SG之溫度較之玻璃應變點高的區域(僅稱為較之玻璃應變點高的區域)。於第1輥A1、第2輥B1處於玻璃應變點以下之區域之情形時,能夠抑制玻璃片SG的斷裂,另一方面,於第1輥A1、第2輥B1處於較之玻璃應變點高的區域之情形時,能夠抑制玻璃板之品質(玻璃板之應變)惡化的影響。
再者,圖6(a)~(c)所示之第1輥A1及第2輥B1設置於較之第3輥A2及第4輥B2靠玻璃片SG的搬送方向之下游側,但第1輥A1及第2輥B1亦可以設置於較之第3輥A2及第4輥B2靠玻璃片SG的搬送方向之上游側。
再者,較佳為,如第1輥A1與第2輥B1對、及第3輥A2與第4輥B2對般之搬送輥對以從成形體41之下端部41a流下之玻璃片SG能夠從下端部41a線性地向鉛垂下方流下之方式,使輥之位置強制位移。Fig. 6(b) shows a situation where the wear of the conveying roller pair is uneven, and the wear of the first roller A1 and the second roller B1 is greater than the wear of the third roller A2 and the fourth roller B2. That is, it represents a state where the diameters of the first roller A1 and the second roller B1 are smaller than the diameters of the third roller A2 and the fourth roller B2. In this case, in order that the first roller A1 is pressed with a fixed force F with respect to the glass sheet SG and the second roller B1, as shown in FIG. 6(b), compared with the third roller A2, it moves to FIG. 6( b) The position on the right side of the middle (thickness direction of the glass sheet SG). Therefore, the conveyance path of the glass sheet SG is curved between the conveyance roller pair of the 3rd roller A2 and the 4th roller B2, and the conveyance roller pair of the 1st roller A1 and the 2nd roller B1. This bending easily becomes the starting point of the fracture of the glass sheet SG. Therefore, as shown in FIG. 6(c), the
如此,控制裝置500以如下方式構成,即,以在使第2輥B1固定的狀態下,第1輥A1相對於第2輥B1夾隔玻璃片SG以固定之力F按壓之方式,控制第1輥A1相對於第2輥B1之相對位置,進而,根據第1輥A1及第2輥B1之磨耗之程度,間歇性地使第2輥B1向第1輥A1的方向以位移量Δ強制性地位移。較佳為,此種位置控制亦對設置於玻璃薄片SG之搬送路徑之複數個搬送輥對進行,但亦可以對複數個搬送輥對中至少1個進行。沿搬送路徑設置的複數個搬送輥對係如上所述,為了使玻璃片SG的張力作用於搬送方向,較佳為,越為搬送方向下游搬送輥對之周速度越快。因此,於沿搬送路徑設置的複數個搬送輥之各個對使用相同的直徑的搬送輥之情形時,越位於搬送方向下游,搬送輥之旋轉速度越大。因此,越為位於搬送方向下游的側之搬送輥對則越加速磨耗。亦即,於複數個搬送輥對之間磨耗之程度容易產生不均,容易產生如圖6(b)所示般之搬送路徑之彎曲。於圖6(b)、(c)中,為了使磨耗之形態容易理解而強調表示。In this way, the
此外,第1輥A1及第2輥B1之磨耗程度例如能夠藉由利用未圖示之位置傳感器等測量出相對於第1輥A1之初始狀態或使第2輥B1強制性地位移時起的位置的變化來判斷。根據一實施形態,較佳為,第1輥A1及第2輥B1之磨耗之程度係以將使第2輥B1強制性地位移時的第1輥A1之旋轉中心軸Ca與第2輥B1之旋轉中心軸Cb連接而成之線段L2的中點P2的位置作為基準位置,根據當前之中點P2的位置相對於基準位置之偏移量而求出。第1輥A1始終以對玻璃片SG賦予固定之力之方式受到位置控制,故而隨著進一步磨耗,而第1輥A1如圖6(b)所示向第2輥B1移動。
再者,將第1輥A1及第2輥B1的使用時間累計,當累計時間超過特定之時間之情形時,亦可以判斷為進一步磨耗,使第2輥B1強制性地位移。根據一實施形態,較佳為,第1輥A1及第2輥B1之磨耗之程度係根據使第2輥B1強制性地位移時起的、採用第1輥A1及第1輥之上述玻璃板SG的搬送的累計時間(第1輥A1及第2輥B1的使用時間的累計值)而求出。
此外,控制裝置500以使第2輥B1的位置向第1輥A1的側僅以位移量Δ強制地位移之方式,產生驅動冷卻輥位置控制用馬達393或下拉輥位置控制用馬達394a~394g的控制信號,但並不限定於控制裝置500強制性地進行第2輥B1之位移的位置控制。例如,亦能夠由作業者手動地使第2輥B1向第1輥A1側強制性地位移。In addition, the degree of abrasion of the first roller A1 and the second roller B1 can be measured with respect to the initial state of the first roller A1 or when the second roller B1 is forcibly displaced by using a position sensor not shown, for example. To judge the change of location. According to one embodiment, it is preferable that the degree of abrasion of the first roller A1 and the second roller B1 is such that the rotation center axis Ca of the first roller A1 and the second roller B1 when the second roller B1 is forcibly displaced The position of the midpoint P2 of the line segment L2 formed by connecting the rotation center axis Cb is used as the reference position, and it is obtained from the offset of the current midpoint P2 position relative to the reference position. The first roller A1 is always position-controlled so as to give a fixing force to the glass sheet SG, and as it is further worn, the first roller A1 moves toward the second roller B1 as shown in FIG. 6(b).
Furthermore, the use time of the first roller A1 and the second roller B1 is accumulated, and when the accumulated time exceeds a specific time, it can be judged as further abrasion and the second roller B1 is forcibly displaced. According to one embodiment, it is preferable that the degree of abrasion of the first roller A1 and the second roller B1 is based on the glass plate using the first roller A1 and the first roller from when the second roller B1 is forcibly displaced The cumulative time of conveyance of the SG (the cumulative value of the use time of the first roller A1 and the second roller B1) is obtained.
In addition, the
根據一實施形態,較佳為,控制裝置500以如下方式構成,即,以將使第2輥B1位移之後的第1輥A1之旋轉軸中心Ca與第2輥B1之旋轉軸中心Cb連接而成之線段L2二等分的中點P2(參照圖6(b)、(c))接近將使無磨耗時之第1輥A1之旋轉中心Ca與第2輥B1之旋轉軸中心Cb連接而成之線段L1二等分的中點P1(參照圖6(a))之方式,使第2輥B1位移。使中心點P2接近中心點P1亦包含使中心點P2與中心點P1完全一致,或位於某程度地相離的位置。藉由如此使第2輥B1位移,能夠使玻璃片SG之搬送路徑之彎曲更小。此處,即便使中心點P2與中心點P1一致,但第1輥A2與第2輥B2所規定之搬送路徑亦會根據相鄰之搬送輥對之磨耗之程度而不成為直線。亦即,位移量Δ較佳為根據相鄰之搬送輥對之磨耗之程度,調整位移量。According to one embodiment, it is preferable that the
因此,根據另一實施形態,較佳為,控制裝置500以使第2輥B1位移之方式構成,以令將使第2輥B1位移之後的第1輥A1之旋轉軸中心Ca與第2輥B1之旋轉軸中心Cb連接而成之線段L2二等分的中點P2的於線段L2之延伸方向上之位置接近將使第3輥A2之旋轉軸中心與第4輥B2之旋轉軸中心連接而成之線段二等分的中點P3(參照圖6(c))的於直線L2之延伸方向上之位置。如此,考慮到相鄰之搬送輥對之磨耗之程度,將第2輥B1之位移量Δ賦予至第2輥B1,故而搬送路徑接近直線形狀。此種中點P1、P2、P3之位置能夠藉由利用位置傳感器等測量出第1輥A1、第2輥B1、第3輥A2、及第4輥B2等之旋轉軸中心來求出。
再者,第3輥A2及第4輥B2係相對於第1輥A1及第2輥B1位於搬送方向上游側的搬送輥,藉此,能根據位於搬送方向上游側的第3輥A2及第4輥B2之玻璃片SG之厚度方向之位置來控制第1輥A1及第2輥B1之玻璃片SG之厚度方向之位置,因此,容易使從成形體41之下端部41a延伸之玻璃片SG的路徑成為直線狀。Therefore, according to another embodiment, it is preferable that the
以上,已對本發明之玻璃板之製造方法及玻璃板之製造裝置詳細地進行了說明,但本發明並不限定於上述實施形態,當然亦可於不脫離本發明之主旨的範圍內進行各種改良或變更。As mentioned above, the glass plate manufacturing method and the glass plate manufacturing apparatus of the present invention have been described in detail, but the present invention is not limited to the above-mentioned embodiments, of course, various improvements can be made without departing from the spirit of the present invention Or change.
11‧‧‧熔融裝置 12‧‧‧澄清裝置 20‧‧‧溢流腔室 24‧‧‧下游管 30‧‧‧成形腔室 40‧‧‧成形裝置 41‧‧‧成形體 41a‧‧‧側面 41b‧‧‧頂部 41c‧‧‧下端部 42‧‧‧流入口 43‧‧‧槽 50‧‧‧間隔部件 51‧‧‧冷卻輥 60‧‧‧溫度調整單元 61~65‧‧‧冷卻單元 80a、80b‧‧‧隔熱部件 81a~81g‧‧‧下拉輥 82a~82g‧‧‧加熱器 90‧‧‧切斷裝置 91‧‧‧控制裝置 100‧‧‧玻璃板之製造裝置 380‧‧‧熱電偶 381‧‧‧主電源開關 382‧‧‧輥壓力傳感器 390‧‧‧冷卻輥驅動馬達 391‧‧‧下拉輥驅動馬達 392‧‧‧切斷裝置驅動馬達 393‧‧‧冷卻輥位置控制用馬達 394a~394g‧‧‧下拉輥位置控制用馬達 500‧‧‧控制裝置 A1‧‧‧第1輥 A2‧‧‧第3輥 B1‧‧‧第2輥 B2‧‧‧第4輥 Ca‧‧‧第1輥A1之旋轉中心軸 Cb‧‧‧第2輥B1之旋轉中心軸 CA‧‧‧中央區域 F‧‧‧力 L1、L2、L3‧‧‧線段 P1、P2、P3‧‧‧中點 R、L‧‧‧側部 SG‧‧‧玻璃片 S1‧‧‧熔融步驟 S2‧‧‧澄清步驟 S3‧‧‧成形步驟 S4‧‧‧冷卻步驟 S5‧‧‧切斷步驟11‧‧‧Melting device 12‧‧‧Clarification device 20‧‧‧Overflow chamber 24‧‧‧Downstream Pipe 30‧‧‧Forming chamber 40‧‧‧Forming device 41‧‧‧Form 41a‧‧‧Side 41b‧‧‧Top 41c‧‧‧Lower end 42‧‧‧Inlet 43‧‧‧Slot 50‧‧‧Spacer parts 51‧‧‧Cooling Roll 60‧‧‧Temperature adjustment unit 61~65‧‧‧Cooling unit 80a, 80b‧‧‧Insulation parts 81a~81g‧‧‧Down roller 82a~82g‧‧‧Heater 90‧‧‧Cutting device 91‧‧‧Control device 100‧‧‧Glass plate manufacturing equipment 380‧‧‧thermocouple 381‧‧‧Main power switch 382‧‧‧Roll Pressure Sensor 390‧‧‧Cooling roller drive motor 391‧‧‧Down roller drive motor 392‧‧‧Cutting device drive motor 393‧‧‧Cooling roller position control motor 394a~394g‧‧‧Motor for position control of pull-down roller 500‧‧‧Control device A1‧‧‧The first roll A2‧‧‧The third roll B1‧‧‧The second roll B2‧‧‧The 4th roll Ca‧‧‧The rotation center axis of the first roller A1 Cb‧‧‧The rotation center axis of the second roller B1 CA‧‧‧Central area F‧‧‧force L1, L2, L3‧‧‧Line segment P1, P2, P3‧‧‧midpoint R, L‧‧‧ side SG‧‧‧glass sheet S1‧‧‧Melting step S2‧‧‧Clarification steps S3‧‧‧Forming steps S4‧‧‧Cooling step S5‧‧‧Cut off step
圖1係一實施形態之玻璃板之製造方法之流程圖。 圖2係表示玻璃板之製造方法中所使用之玻璃板之製造裝置之示意圖。 圖3係成形裝置之概略之概略圖(剖視圖)。 圖4係成形裝置之概略之概略圖(側視圖)。 圖5係表示一實施形態之玻璃板之製造裝置中所使用之控制裝置之構成之一例的框圖。 圖6(a)~(c)係對圖5所示之控制裝置所進行之位置控制之一例進行說明的圖。Fig. 1 is a flowchart of a method of manufacturing a glass plate according to an embodiment. Fig. 2 is a schematic diagram showing the manufacturing device of the glass plate used in the manufacturing method of the glass plate. Fig. 3 is a schematic diagram (cross-sectional view) of the outline of the forming apparatus. Fig. 4 is a schematic diagram (side view) of the outline of the forming apparatus. Fig. 5 is a block diagram showing an example of the configuration of a control device used in a glass plate manufacturing apparatus according to an embodiment. 6(a) to (c) are diagrams for explaining an example of position control performed by the control device shown in FIG. 5.
A1‧‧‧第1輥 A1‧‧‧The first roll
A2‧‧‧第3輥 A2‧‧‧The third roll
B1‧‧‧第2輥 B1‧‧‧The second roll
B2‧‧‧第4輥 B2‧‧‧The 4th roll
Ca‧‧‧第1輥A1之旋轉中心軸 Ca‧‧‧The rotation center axis of the first roller A1
Cb‧‧‧第2輥B1之旋轉中心軸 Cb‧‧‧The rotation center axis of the second roller B1
F‧‧‧力 F‧‧‧force
L2‧‧‧線段 L2‧‧‧Line segment
P1、P2、P3‧‧‧中點 P1, P2, P3‧‧‧midpoint
SG‧‧‧玻璃片 SG‧‧‧glass sheet
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CN101018744A (en) * | 2004-06-02 | 2007-08-15 | 康宁股份有限公司 | Pull roll assembly for drawing a glass sheet |
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2018
- 2018-09-14 JP JP2018172418A patent/JP6619492B2/en active Active
- 2018-09-27 TW TW107134003A patent/TWI714885B/en active
Patent Citations (1)
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CN101018744A (en) * | 2004-06-02 | 2007-08-15 | 康宁股份有限公司 | Pull roll assembly for drawing a glass sheet |
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JP6619492B2 (en) | 2019-12-11 |
JP2019064902A (en) | 2019-04-25 |
TW201920010A (en) | 2019-06-01 |
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