Glass plate manufacturing method and manufacturing device thereof

Abstract

The manufacturing method of a glass plate (G) comprises: a positioning step, in which the glass plate (G) is positioned by bringing an end portion (Ga) of the glass plate (G) into contact with a positioning area (6a) of a belt (6); and a processing step, in which a predetermined processing is performed on the end portion (Ga, Gb) of the glass plate (G) which has been transported in a straight line after the positioning step, and the deviation of the positioning of the glass plate (G) in the positioning step is corrected by adjusting the angle of the positioning area (6a) at least relative to the transport direction (X).

Description

Technical Field

[0001] The present invention relates to a method for manufacturing a glass plate including a step of positioning the glass plate, and a manufacturing apparatus thereof. Background Art

[0002] As is well known, when manufacturing glass plates for liquid crystal displays, organic EL displays, glass plates for furniture, glass plates for buildings, etc., the end faces of the glass plates cut into a rectangular shape with a specified size are subjected to specified treatments (for example, end face grinding, end face grinding, surface cleaning treatment, surface covering treatment, etc.).

[0003] For example, Patent Document 1 discloses a belt-type conveying device for conveying a glass plate in a straight line in a horizontal direction, a glass plate positioning mechanism for positioning the glass plate, a chamfering device with a diamond grinding wheel for chamfering the end faces of the glass plate in the left and right width directions, and a chamfering method for chamfering the end faces of the glass plate using the chamfering device.

[0004] The glass plate positioning mechanism in the chamfering device is located upstream of the diamond grinding wheel in the conveying direction of the glass plate. The glass plate positioning mechanism includes: a side belt as a positioning member that contacts one end surface of the glass plate in the width direction; and a plurality of pressing rollers that contact the other end surface of the glass plate in the width direction (see paragraphs 0031, 0032 and Figure 1 ).

[0005] In the chamfering method disclosed in Patent Document 1, a glass plate that is linearly transported by a transport device of a chamfering device is positioned by a glass plate positioning mechanism. In this case, the glass plate positioning mechanism causes a plurality of pressing rollers to contact the other end surface of the glass plate in the width direction, and presses the end surface of one side of the glass plate in the width direction against the side belt. The side belt moves around, and together with the pressing rollers, the glass plate moves toward the diamond grinding wheel on the downstream side of the transport direction.

[0006] The diamond grinding wheel performs chamfering processing on each end surface of the glass plate positioned by the glass plate positioning mechanism.

[0007] Prior art literature

[0008] Patent Literature

[0009] Patent Document 1: Japanese Patent Application Publication No. 2012-106295 Summary of the invention

[0010] Problems to be solved by the invention

[0011] In the step of positioning the glass sheet by the glass sheet positioning mechanism, if the type or thickness of the glass sheet is changed or the side tape is replaced, the positioning of the glass sheet may be deviated.

[0012] In this case, the grinding and polishing of the end face of the glass plate by the diamond grinding wheel becomes uneven, resulting in so-called burns on the end face, unground parts, or large errors in the verticality of the glass plate. As a result, the quality of the glass plate subjected to predetermined treatments such as chamfering after positioning is reduced, leading to a deterioration in the product yield.

[0013] From the above viewpoints, a technical object of the present invention is to appropriately correct, when a deviation occurs in positioning of a glass plate, such deviation to maintain good quality of a glass plate subjected to a predetermined process after positioning.

[0014] Solutions to Solve Problems

[0015] A first aspect of the present invention, which is made to solve the above-mentioned problems, is a method for manufacturing a glass plate, comprising: a positioning step, in which the glass plate is positioned by bringing an end of the glass plate into contact with a positioning area of ​​a positioning member; and a processing step, in which a prescribed processing is performed on the glass plate that has been transported after the positioning step. The method for manufacturing the glass plate is characterized in that the method for manufacturing the glass plate comprises the following adjustment step: with respect to a deviation in the positioning of the glass plate in the positioning step, the deviation is corrected by adjusting an angle of the positioning area at least relative to a transport direction of the glass plate.

[0016] According to this structure, when the positioning of the glass plate is deviated during the positioning process, the deviation can be easily and reliably corrected. In detail, the path of the glass plate transported from the positioning process to the processing process is corrected in consideration of the deviation in the positioning of the glass plate. However, in order to correct the path, large-scale equipment adjustment is required and it is also disadvantageous in terms of cost. In contrast, in the present invention, in the adjustment process, the angle of the positioning area of ​​the positioning member at least relative to the direction of transportation is adjusted in response to the deviation in the positioning of the glass plate. Therefore, the deviation in positioning, especially the deviation in the posture of the glass plate, can be appropriately corrected by adjusting a small amount of equipment, and the good quality of the glass plate that has been subjected to the prescribed treatment after positioning can be maintained.

[0017] In this configuration, the positioning member may be supported by an upper supporting member disposed on a lower supporting member, and in the adjusting step, the angle of the positioning region may be adjusted by adjusting an angle of the upper supporting member with respect to the conveying direction.

[0018] In this way, by simply adjusting the angle of the upper support member on the lower support member, the angle of the positioning area of ​​the positioning member supported by the upper support member is adjusted, and the posture of the positioned glass sheet is less likely to deviate. Thus, in the adjustment process, the deviation of the posture of the glass sheet can be corrected by a simple operation.

[0019] In this configuration, the upper supporting member may be held on the lower supporting member so as to be rotatable about a pin member, and in the adjustment step, the angle of the upper supporting member may be adjusted by rotatably moving the upper supporting member about the pin member.

[0020] In this manner, the angle of the positioning region is adjusted simply by rotating the upper support member about the pin member, thereby further simplifying the work performed in the adjustment process.

[0021] In this configuration, when the upper supporting member is rotationally moved about the pin member, a moving length of a portion of the upper supporting member separated from the pin member in a direction intersecting the conveying direction may be measured.

[0022] In this way, the angle can be adjusted with high accuracy in the adjustment process.

[0023] In this configuration, the movement length may be finely adjusted so that the movement length becomes 500 μm or less.

[0024] In this way, by finely adjusting the angle of the positioning area, the angle can be adjusted with higher accuracy in the adjustment process.

[0025] In the above configuration, the lower support member may be disposed on a base support member, and in the adjustment step, the position of the positioning area may be adjusted by moving the upper support member together with the lower support member in a direction intersecting the conveying direction.

[0026] In this way, not only the angle of the positioning area but also the position of the positioning area (the position in the direction intersecting the conveying direction) can be adjusted, so the adjustment of the positioning area becomes more reliable.

[0027] In this configuration, a coarse adjustment may be performed so that the moving length of the upper supporting member along the conveying direction exceeds 300 μm.

[0028] In this way, when the position of the positioning area is greatly offset, the offset can be accurately corrected. In detail, the position of the positioning area is usually slightly offset, but sometimes it is greatly offset due to unpredictable circumstances. In the structure here, even if the position of the positioning area is greatly offset, it can be properly dealt with.

[0029] In the above structure, the positioning member may be a belt having the positioning area. In addition, the positioning member may be a belt wound around a plurality of rollers provided on the upper supporting member and moved in a circular motion, and the belt has the positioning area.

[0030] In this way, the characteristics of the belt can be effectively utilized for positioning the glass plate.

[0031] In the above configuration, in the adjusting step, at least the angle of the positioning region may be adjusted based on a result of processing the end portion of the glass sheet in the processing step.

[0032] In this manner, since the processing results in the processing steps are reflected in the adjustment of the positioning region, it is possible to more reliably maintain the good quality of the glass sheet that has been subjected to the predetermined processing after positioning.

[0033] A second aspect of the present invention, which is made to solve the above-mentioned problems, is a glass plate manufacturing device, comprising: a positioning device, which positions the glass plate by bringing the end of the glass plate into contact with the positioning area of ​​a positioning member; and a processing device, which performs a prescribed processing on the end of the glass plate that has been transported after the positioning processing performed by the positioning device, and the glass plate manufacturing device is characterized in that the positioning device is configured to correct the deviation in the positioning of the glass plate by adjusting the angle of the positioning area at least relative to the conveying direction of the glass plate.

[0034] According to this device, it is possible to obtain substantially the same effects as those of the previously described method having the same characteristic structure as this device.

[0035] Effects of the Invention

[0036] According to the present invention, when a deviation occurs in positioning of a glass plate, the deviation can be appropriately corrected, and good quality of the glass plate subjected to a predetermined process after positioning can be maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a plan view showing the overall structure of the glass plate manufacturing apparatus according to the embodiment of the present invention.

[0038] Figure 2 yes Figure 1A longitudinal sectional side view of the manufacturing device taken along line II-II.

[0039] Figure 3 This is a perspective view of the positioning device according to the embodiment of the present invention as seen from the front side.

[0040] Figure 4 This is a perspective view of the main part of the positioning device according to the embodiment of the present invention as viewed from the back side (rear surface side).

[0041] Figure 5 It is a partially cutaway front view showing the main part of the positioning device according to the embodiment of the present invention.

[0042] Figure 6 It is a partially omitted plan view showing the main part of the positioning device according to the embodiment of the present invention.

[0043] Figure 7 It is a plan view showing the operation of the main part of the positioning device according to the embodiment of the present invention.

[0044] Figure 8 It is a plan view showing the operation of the main part of the positioning device according to the embodiment of the present invention.

[0045] Fig. 9 It is a plan view showing the operation of the main part of the positioning device according to the embodiment of the present invention. DETAILED DESCRIPTION

[0046] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Figure 1 to Figure 7 An embodiment of the manufacturing apparatus and the manufacturing method of the glass plate of the present invention is described.

[0047] Figure 1 as well as Figure 2 The basic structure of a glass plate manufacturing device is illustrated. The manufacturing device 1 is used to perform a predetermined treatment on the ends (end faces) Ga and Gb of the glass plate G while conveying the glass plate G in a horizontal posture along a predetermined conveying direction X. The glass plate G is transparent and has a rectangular shape, but is not limited to this form. The thickness of the glass plate G is 0.2 to 1.3 mm, but is not limited to this range.

[0048] The manufacturing apparatus 1 includes a positioning device 2 for positioning the glass sheet G and a processing device 3 which is one form of a processing device for performing a predetermined processing on the end portions Ga and Gb of the glass sheet G.

[0049] like Figure 1 to Figure 3As shown, the positioning device 2 comprises: a belt mechanism 4, which contacts one end portion (hereinafter referred to as the "first end portion") Ga of the glass plate G in the width direction (direction orthogonal to the conveying direction X) Y; and a pressing roller 5, which contacts the other end portion (hereinafter referred to as the "second end portion") Gb of the glass plate G in the width direction Y.

[0050] The belt mechanism 4 includes a belt 6 and support rollers 7a to 7d disposed on an upper plate 8 as an upper support member and supporting the belt 6. The upper plate 8 is disposed on a lower plate 9 as a lower support member, and the lower plate 9 is disposed on a base 10 as a base support member.

[0051] The belt 6 is a positioning member that positions the glass plate G by contacting the first end Ga of the glass plate G. In addition, the belt 6 also has a function of conveying the glass plate G to the processing device 3. Moreover, the belt 6 is formed into an endless belt shape using ethylene rubber with embedded wires, but is not limited to this material. In addition, the belt 6 is wound around support rollers 7a to 7d. The belt 6 is supported by the support member 8 via the support rollers 7a to 7d.

[0052] Each support roller 7a to 7d applies tension to the belt 6 by contacting the inner peripheral surface of the belt 6. In the present embodiment, a total of four support rollers 7a to 7d are arranged at the four corners of the upper plate 8, but the number of support rollers 7a to 7d is not limited to the present embodiment. Hereinafter, the four support rollers 7a to 7d are respectively referred to as the first support roller 7a, the second support roller 7b, the third support roller 7c, and the fourth support roller 7d.

[0053] In this embodiment, the fourth support roller 7d is a driving roller, and the other support rollers 7a to 7c are configured as free rollers, but the present invention is not limited to this form. The fourth support roller 7d is driven and rotated by a driving motor M fixed to the upper plate 8. The shafts of the first support roller 7a, the second support roller 7b, and the third support roller 7c are supported by the upper plate 8. The belt 6 moves in a circular motion along a rectangular path when viewed from above.

[0054] The area 6a between the first support roller 7a and the second support roller 7b in the belt 6 is a positioning area that contacts the first end Ga when positioning the glass sheet G. In other words, the positioning area 6a of the belt 6 is an area extending on a straight line that contacts the first end Ga when positioning the glass sheet G. The tension of the belt 6 is adjusted by moving a support roller other than the first support roller 7a and the second support roller 7b, in this embodiment, the third support roller 7c, but the present invention is not limited thereto.

[0055] The upper plate 8 and the lower plate 9 are both made of, for example, stainless steel or other metals, but the materials of these plates 8 and 9 are not limited thereto. In addition, in the present embodiment, the upper support member and the lower support member are both plates, but they may also be formed in a block shape or other various shapes.

[0056] The base 10 is made of stainless steel or other metals, but the material of the base 10 is not limited thereto. The base 10 is formed in a plate shape, but may be formed in various other shapes.

[0057] The pressing roller 5 is configured to be rotatable and to be able to approach and move away from the second end Gb of the glass sheet G carried into the positioning device 2. A plurality of auxiliary rollers 11 are provided between the belt mechanism 4 and the pressing roller 5 to support the lower surface of the glass sheet G being linearly conveyed in a horizontal posture. Figure 1 As shown, a plurality of auxiliary rollers 11 are arranged at regular intervals from the positioning device 2 to the processing device 3 .

[0058] like Figure 1 as well as Figure 2 As shown, the processing device 3 includes a plurality of processing tools 12 for processing the end portions Ga and Gb of the glass sheet G, and conveying devices 13a and 13b for conveying the glass sheet G in a straight line along the conveying direction X.

[0059] In the present embodiment, the processing tool 12 is composed of a plurality of rotating tools, such as grindstones (grinding grindstones, grinding grindstones), but is not limited to this structure and may also be composed of grinding belts or other tools. Each processing tool 12 is arranged on both sides of the glass plate G in order to process the first end Ga and the second end Gb of the glass plate G.

[0060] In addition to grinding and polishing, the present technology can also be applied to, for example, cleaning the front surface, back surface, first end Ga and second end Gb of the glass plate G or forming an organic film or an inorganic film. This is because the alignment of the glass plate G is also important when processing the first end Ga and the second end Gb of the glass plate G.

[0061] The conveying device 13a is a first conveying device, and the conveying device 13b is a second conveying device, and each conveying device 13a, 13b is arranged in parallel with a predetermined interval. In addition, each conveying device 13a, 13b includes a pair of upper and lower first conveying belts 14 and second conveying belts 15, and a first driving device 16 and a second driving device 17 for driving each conveying belt 14, 15.

[0062] Each conveying belt 14 , 15 is formed of an elastic material such as rubber and is in an endless belt shape. Each conveying belt 14 , 15 sandwiches the glass sheet G and conveys it along the conveying direction X. Each driving device 16 , 17 includes a driving wheel 18 and a driven wheel 19 disposed inside each conveying belt 14 , 15 .

[0063] Based on the above basic structure, the positioning device 2 can adjust the angle of the positioning area 6a of the belt 6 in order to correct the deviation when the positioning of the glass plate G occurs. The angle of the positioning area 6a here refers to the angle of the positioning area 6a relative to the Figure 1 The angle α in the conveying direction X is shown. The structure for adjusting this angle is as follows.

[0064] Figure 4 This is a perspective view of the belt mechanism 4 and its supporting elements of the positioning device 2 as viewed from the rear surface side (back side). As shown in the figure, the upper plate 8 is connected to the lower plate 9 via the pin member 20. The pin member 20 is arranged at the first corner 8a, which is the end on the rear side and the downstream side of the conveying direction X, among the four corners of the upper plate 8. During the positioning of the glass plate G, the first corner 8a of the upper plate 8 is fixed to the lower plate 9 by tightening the nut 21 screwed with the pin member 20.

[0065] In addition, during the positioning of the glass plate G, the second corner 8b, which is the end on the rear side and the end on the upstream side in the conveying direction X, of the four corners of the upper plate 8 is fixed to the lower plate 9 by the bolt 22. The bolt 22 is inserted into the long hole 8c formed in the upper plate 8. The long hole 8c is long in the width direction Y (preferably along the direction around the pin member 20). It should be noted that the fastening structure using the bolt 22 and the long hole 8c can also be provided at multiple positions of the two plates 8 and 9.

[0066] In this embodiment, the upper plate 8 can be rotated around the pin member 20 by loosening the nut 21 and the bolt 22. The maximum value of the rotational movement angle in this case is determined by the length of the long hole 8c in the longitudinal direction. The rotational movement of the upper plate 8 changes the angle of the positioning area 6a of the belt 6.

[0067] Moreover, an adjustment mechanism 24 for adjusting the angle of the positioning area 6a is provided on the rear surface side of the belt mechanism 4 and its supporting elements of the positioning device 2. The adjustment mechanism 24 includes a screw shaft 25 having a thread groove formed throughout the entire length. The screw shaft 25 extends to the rear side from the rear surface 8x of the second corner 8b of the upper plate 8 in a direction intersecting the conveying direction X (in the present embodiment, the width direction Y). The axial middle portion of the screw shaft 25 is held in an axially movable manner on a first bracket 26 fixed to the rear surface 10x of the base 10 in an upright posture. The front end portion 25a of the screw shaft 25 is supported on the rear surface 8x of the upper plate 8 in an axially non-movable manner. The flange portion 25b integrally formed at the rear end of the screw shaft 25 contacts the spindle 27a of the dial indicator 27 for measuring the axial movement length of the screw shaft 25. The dial indicator 27 is supported on a second bracket 28 fixed to the rear surface 10x of the base 10 and extending to the rear side. It should be noted that the screw shaft 25 may be formed with threads only at necessary positions in the axial direction.

[0068] Further details of the above structure and the structure that accompanies this detail are shown below. Figure 5 This is a front view obtained by cutting away the main parts of the supporting elements of the belt mechanism 4, namely, the belt 6 and the four supporting rollers 7a to 7d. Figure 6 2 is a top view showing the main parts of the supporting elements of the belt mechanism 4 and the adjustment mechanism 24. Figure 5 As shown, the pin member 20 located at the first corner 8a of the upper plate 8 is in the shape of a round bar. The lower end of the pin member 20 is fixed to the lower plate 9 by pressing and screwing. The middle part of the pin member 20 in the vertical direction is fitted into the through hole 8y formed in the upper plate 8, so that the upper plate 8 can rotate and move without shaking around the pin member 20. A thread groove forming portion 20a is formed on the upper part of the pin member 20, and a nut 21 is screwed into the thread groove forming portion 20a.

[0069] The bolt 22 located at the second corner 8b of the upper plate 8 is inserted into the long hole 8c formed in the upper plate 8 with play. The lower end of the bolt 22 is fixed to the lower plate 9. The lower plate 9 is fixed to the base 10 (the upper wall 10a thereof) using a plurality of bolts 29. A plurality of through holes 8z are formed in the upper plate 8, and these through holes 8z are located above the plurality of bolts 29. Tools or the like are inserted into these through holes 8z in order to tighten and loosen the plurality of bolts 29.

[0070] like Figure 6As shown, the front end portion 25a of the screw shaft 25 in the adjustment mechanism 24 is screwed into the upper plate 8 and locked by the nut 30. The axial middle portion of the screw shaft 25 is inserted into the through hole 26z formed in the first bracket 26 in a manner with play. On the front and rear sides of the first bracket 26, the first nut 31 and the second nut 32 are screwed to the screw shaft 25, and the first bracket 26 is clamped by the two nuts 31 and 32. By changing the screwing position of the two nuts 31 and 32 relative to the screw shaft 25, the screw shaft 25 is moved axially. In this embodiment, the dial indicator 27 for measuring the axial movement length of the screw shaft 25 is supported on the second bracket 28 in a manner that can slide in the width direction Y.

[0071] Furthermore, the positioning device 2 can adjust the position of the positioning area 6a of the belt 6. The position of the positioning area 6a here refers to the position in the direction intersecting the conveying direction X (in the width direction Y in this embodiment). As a structure for adjusting the position, Figure 6 As shown, the plurality of bolts 29 for fixing the lower plate 9 to the base 10 are inserted into the long holes 9c formed in the lower plate 9 with play. These long holes 9c are long in the width direction Y. Therefore, by loosening these plurality of bolts 29, the upper plate 8 can be moved in the width direction Y together with the lower plate 9.

[0072] Hereinafter, a method for manufacturing a glass sheet G using the manufacturing apparatus 1 having the above configuration will be described. This method includes a positioning step performed by the positioning apparatus 2 , a processing step performed by the processing apparatus 3 , and an adjustment step performed by the adjustment mechanism 24 and a structure accompanying the adjustment mechanism 24 .

[0073] In the positioning process, the pressing roller 5 contacts the second end Gb of the glass sheet G carried into the positioning device 2 from a process (e.g., a cutting process) upstream of the positioning process. The pressing roller 5 presses the second end Gb of the glass sheet G so that the first end Ga of the glass sheet G contacts the positioning region 6a of the belt 6.

[0074] The belt mechanism 4 drives and rotates the fourth support roller 7d to move the belt 6 around so as to feed the glass sheet G to the processing device 3. The positioned glass sheet G is linearly conveyed along the conveyance direction X to the processing device 3 by the belt 6 and the pressing roller 5.

[0075] In the processing step, the processing device 3 processes (grinds and / or polishes) the end portions Ga and Gb of the glass sheet G using the processing tools 12 while conveying the glass sheet G in the conveying direction X using the conveying devices 13 a and 13 b.

[0076] In the above manufacturing method, due to long-term use of manufacturing a plurality of glass sheets G, the positioning of the glass sheets G may sometimes be deviated. In particular, when the type of the glass sheets G is changed or the thickness of the glass sheets G is changed, or when the tension of the belt 6 is adjusted or when the belt 6 is replaced, the positioning of the glass sheets G is likely to be deviated. In the present method, the following adjustment step is performed: with respect to the deviation in positioning of the glass sheets G, the deviation in positioning is corrected by adjusting the angle of the positioning area 6a of the belt 6 and the position of the positioning area 6a.

[0077] Figure 7 The illustrated embodiment shows a state in which the angle of the positioning area 6a of the belt 6 deviates by α1 relative to the conveying direction X. This deviation may be caused by the positional displacement of the supporting rollers 7a to 7d when the tension of the belt 6 is adjusted, but the manner of the deviation is not limited to this. In the illustration, the deviation of the angle of the positioning area 6a is exaggerated. In the case of the illustration, in the adjustment process, the nut 21 of the first corner 8a of the upper plate 8 and the bolt 22 of the second corner 8b are first loosened. As a result, the upper plate 8 can be rotated and moved around the pin member 20. In this state, the second nut 32 of the screw shaft 25 screwed on the adjustment mechanism 24 is tightened as shown. Figure 7 The first nut 31 is then rotated while being in contact with the first bracket 26. As a result, the screw shaft 25 is axially moved forward and the upper plate 8 is rotated around the pin member 20. Along with this, the positioning area 6a of the belt 6 is also rotated. This operation is performed by the operator while confirming the forward movement length of the second corner 8b of the upper plate 8 using the dial indicator 27.

[0078] In this case, the above-mentioned movement length to be corrected can be determined by whether the processing results of the ends Ga and Gb of the glass sheet G in the processing step are good. Therefore, in the present embodiment, as a first example, the above-mentioned movement length to be corrected may be obtained in advance based on the processing results of the glass sheet G before the adjustment step, and the first nut 31 may be rotated until the movement length is reached while visually checking the dial indicator 27. In addition, as a second example, while performing the positioning step, the second nut 32 may be rotated while judging whether the processing result of the glass sheet G is of high quality, and the rotation of the second nut 32 may be stopped when the quality is high.

[0079] In any example, the movement length to be corrected is preferably 500 μm or less, more preferably 300 μm or less and 5 to 200 μm, and further preferably 5 to 150 μm. Therefore, by operating the adjustment mechanism 24, the angle of the positioning area 6a is finely adjusted. After the rotation of the first nut 31 is stopped and the fine adjustment of the angle is completed, the second nut 32 is moved forward to contact the first bracket 26. As a result, Figure 8 As shown by the solid line, the screw shaft 25 is locked by the two nuts 31 and 32. As a result, as shown in the figure, the positioning area 6a of the belt 6 is parallel to the conveying direction X, and the deviation of the angle is corrected.

[0080] In this adjustment process, an example is given in which the angle of the positioning area 6a is deviated by α1 on one side. However, even when the angle is deviated on the other side, the deviation can be corrected by the same procedure.

[0081] Furthermore, in this method, even if the positioning area 6a of the belt 6 has a large positional deviation in the width direction Y due to unforeseen circumstances, the deviation can be corrected. Figure 6 From the state shown, the positioning area 6a of the belt 6 is moved forward by a length P exceeding 300 μm and further exceeding 1000 μm, so that the position deviation of the positioning area 6a can be corrected. In this case, in the adjustment process, the plurality of bolts 29 fixing the lower plate 9 to the base 10 are first loosened. As a result, the upper plate 8 can be moved forward together with the lower plate 9. In this case, it is preferable to Figure 6 As shown by the dotted line, the second nut 32 of the adjustment mechanism 24 is moved from the first bracket 26 to a position far away from the rear. In this state, the upper plate 8 and the lower plate 9 are roughly adjusted by moving the length P forward. This rough adjustment can be performed by, for example, an operator using a tool or by using a ball screw mechanism, a cylinder, etc. After the rough adjustment is completed, the plurality of bolts 29 are tightened. As a result, as shown in FIG. Fig. 9 As shown in the figure, the deviation of the position of the length P in the positioning area 6a is corrected. Then, as shown in the figure, the first nut 31 and the second nut 32 are brought into contact with the first bracket 26, the screw shaft 25 is locked, and the dial indicator 27 is slid forward on the second bracket 28 and fixed. In this way, when the positioning area 6a also has an angle deviation, the deviation can be corrected by fine adjustment.

[0082] It should be noted that, in this adjustment step, an example is given in which the position of the positioning region 6a of the belt 6 is shifted rearward, but even when it is shifted forward, the deviation can be corrected according to the same procedure.

[0083] According to the manufacturing apparatus 1 and the manufacturing method of the glass sheet G of this embodiment described above, the following effects can be obtained.

[0084] That is, in response to the deviation in positioning of the glass plate G, it is considered to correct the path of conveying the glass plate G from the positioning step to the processing step. However, in order to correct this path, large-scale equipment adjustment is required, which is also disadvantageous in terms of cost. In contrast, in this embodiment, in response to the deviation in positioning of the glass plate G, the angle and position of the positioning area 6a are adjusted in the adjustment step. Therefore, the deviation in positioning of the glass plate G can be appropriately corrected by adjusting a small amount of equipment, and the good quality of the glass plate G that has been subjected to a prescribed treatment after positioning can be maintained.

[0085] In the present embodiment, the belt 6 is supported by the upper plate 8 disposed on the lower plate 9, and in the adjustment process, the angle of the positioning area 6a of the belt 6 is adjusted simply by adjusting the angle of the upper plate 8 with respect to the conveying direction X. Therefore, in the adjustment process, the deviation of the posture of the glass sheet G can be corrected by a simple operation. In addition, in the present embodiment, the angle of the positioning area 6a can be adjusted simply by rotating the upper plate 8 around the pin member 20, thereby further simplifying the operation performed in the adjustment process.

[0086] In this embodiment, the angle of the positioning area 6a can be adjusted while visually confirming the dial indicator 27, so the accuracy of the operation in the adjustment process can be ensured. In addition, in this embodiment, the angle of the positioning area 6a is finely adjusted by operating the adjustment mechanism 24, so the angle can be adjusted with high precision in the adjustment process.

[0087] In this embodiment, not only the angle of the positioning area 6a can be adjusted, but also the position of the positioning area 6a (the position in the conveying direction X) can be adjusted, so the adjustment of the positioning area 6a becomes more reliable. In addition, in this embodiment, even if the position of the positioning area 6a is greatly offset, it can be appropriately dealt with by roughly adjusting its position.

[0088] In the present embodiment, the angle and position of the positioning region 6a are adjusted based on the processing results of the ends Ga and Gb of the glass sheet G in the processing step, so that the good quality of the glass sheet G subjected to the predetermined processing after positioning can be more reliably maintained.

[0089] It should be noted that the present invention is not limited to the configuration of the above-described embodiment, nor is it limited to the above-described effects. The present invention can be modified in various ways without departing from the gist of the present invention.

[0090] In the above-mentioned embodiment, the positioning member is formed by a belt 6 supported on the upper plate 8, but the positioning member can also be a plurality of rollers arranged in a straight line on the upper plate 8. In this case, the first end Ga of the glass plate G contacts the outer peripheral surfaces of the plurality of rollers, and these plurality of rollers rotate to position the glass plate G.

[0091] In the above embodiment, the pin member 20 is fixed to the lower plate 9, but the pin member 20 may be fixed to the base 10 by passing through a through hole formed in the lower plate 9. In this case, the pin member 20 can be pulled out from the base 10 and the position of the positioning area 6a can be adjusted.

[0092] In the above-mentioned embodiment, the lower side supporting member is set as the lower plate 9, but it is not necessary to provide the lower plate 9. In this case, the base 10 becomes the lower side supporting member.

[0093] In the above-described embodiment, the dial indicator 27 is used as the length measuring device, but other length measuring devices such as a laser displacement meter may be used.

[0094] In the above-described embodiment, the adjustment mechanism 24 is formed of the screw shaft 25 , the nuts 31 , 32 , etc. However, other mechanisms may be used as long as they have the same function.

[0095] In the above-mentioned embodiment, the bolt and the nut are used, but the bolt may be another member formed with an external thread, and the nut may be another member formed with an internal thread.

[0096] Description of Reference Numerals

[0097] 1 Glass sheet manufacturing device

[0098] 2 Positioning device

[0099] 3 Processing equipment

[0100] 6 belt (positioning member)

[0101] 6a Positioning area

[0102] 7a Roller (first support roller)

[0103] 7b Roller (Second Support Roller)

[0104] 7c Roller (third support roller)

[0105] 7d roller (fourth supporting roller)

[0106] 8 Upper plate (upper support member)

[0107] 9 Lower plate (lower support member)

[0108] 10. Abutment (foundation support member)

[0109] 20 Pin member

[0110] 24 Adjustment mechanism

[0111] 27 Dial indicator (length measuring device)

[0112] G Glass Plate

[0113] Ga glass plate end (first end)

[0114] X transport direction (direction of linear transport)

[0115] α The angle of the positioning area.

Claims

1. A method for manufacturing a glass plate, comprising: a positioning step of positioning the glass sheet by bringing an end of the glass sheet into contact with a positioning region of a positioning member; and a processing step of performing a predetermined processing on the glass plate conveyed through the positioning step, The method for manufacturing the glass plate is characterized in that: The method for manufacturing a glass sheet includes an adjustment step of rotating and moving the positioning region to adjust an angle of the positioning region at least with respect to a conveyance direction of the glass sheet in response to a deviation in positioning of the glass sheet in the positioning step, thereby correcting the deviation.

2. The method for manufacturing a glass plate according to claim 1, wherein: The positioning member is supported by an upper supporting member disposed on a lower supporting member, and in the adjusting step, the angle of the positioning region is adjusted by adjusting an angle of the upper supporting member with respect to the conveying direction.

3. The method for manufacturing a glass plate according to claim 2, wherein: The upper supporting member is held on the lower supporting member so as to be rotatable about a pin member, and in the adjusting step, the angle of the upper supporting member is adjusted by rotatably moving the upper supporting member about the pin member.

4. The method for manufacturing a glass plate according to claim 3, wherein: When the upper supporting member is rotationally moved about the pin member, a moving length of a portion of the upper supporting member separated from the pin member in a direction intersecting the conveying direction is measured.

5. The method for manufacturing a glass plate according to claim 4, wherein: The movement length is finely adjusted so that the movement length is 500 μm or less.

6. The method for producing a glass plate according to any one of claims 2 to 5, wherein: The lower supporting member is disposed on a base supporting member, and in the adjusting step, the upper supporting member is moved together with the lower supporting member in a direction intersecting the conveying direction, thereby adjusting the position of the positioning area.

7. The method for manufacturing a glass plate according to claim 6, wherein: A coarse adjustment is performed so that the moving length of the upper supporting member along the conveying direction exceeds 300 μm.

8. The method for producing a glass plate according to any one of claims 1 to 5, wherein: The positioning member is a belt having the positioning area.

9. The method for producing a glass plate according to any one of claims 2 to 5, wherein: The positioning member is a belt that is wound around a plurality of rollers provided on the upper supporting member and moves in a circular motion, and the belt has the positioning area.

10. The method for producing a glass plate according to any one of claims 1 to 5, wherein: In the adjustment step, at least the angle of the positioning area is adjusted based on a result of processing the end portion of the glass sheet in the processing step.

11. A manufacturing device for a glass plate, comprising: a positioning device for positioning the glass plate by bringing an end of the glass plate into contact with a positioning region of a positioning member; and a processing device for performing a predetermined processing on the glass plate conveyed after the positioning processing performed by the positioning device, The glass sheet manufacturing device is characterized in that: The positioning device is configured to correct the deviation in positioning of the glass sheet by rotationally moving the positioning region and adjusting an angle of the positioning region with respect to at least a conveyance direction of the glass sheet.

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