Method for manufacturing glass article
By performing electrostatic elimination of the bottom pad and using electrostatic elimination members during the cutting process of the glass plate, the difficulty of peeling of the glass plate caused by the activation of the bottom pad is solved, and stable peeling and high-quality cutting of the glass plate are achieved.
Patent Information
- Application Number
- CN202410730633.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-06-30
- Filing Date
- 2024-06-06
- Publication Date
- 2024-12-31
AI Technical Summary
During the cutting process of glass plates, the bottom pad is charged and the problem is that the glass plate and the bottom pad are difficult to peel.
The electrostatic elimination is carried out on the bottom pad of the mounting table, and the electrostatic elimination member with low surface resistivity and adhesion contacts the bottom pad to remove static electricity and foreign matter, thereby suppressing the charging of the bottom pad and fixing the glass plate through the suction flow path to lift Accuracy of scribing positions and convenience of peeling.
It effectively suppresses the problem of fitting glass plates caused by the bottom pads, improves the peeling convenience and marking quality of glass plates, and ensures stable cutting of glass plates and high-quality finished products.
Smart Images
Figure CN119219320A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a method for manufacturing a glass article. Background Art
[0002] As described in Patent Document 1, there is a known method for cutting a glass plate in which a score line is formed on the glass plate using a tool and then cutting is performed along the score line.
[0003] Prior art literature
[0004] Patent Literature
[0005] Patent Document 1: Japanese Patent Application Publication No. 2023-051329 Summary of the invention
[0006] Problems to be solved by the invention
[0007] As described above, when a scribe line is formed on a glass plate using a tool, the scribe line can be formed stably by, for example, placing the glass plate on a mounting table having a platform and a base pad placed on the platform. After the scribe line is formed, the glass plate placed on the base pad of the mounting table is separated from the base pad. At this time, the base pad may be charged, causing the base pad to adhere to the glass plate, making it difficult to peel the glass plate from the base pad.
[0008] An object of the present invention is to provide a method for manufacturing a glass article in which, after a score line is formed on a glass plate placed on a base, the glass plate can be easily peeled off from the base.
[0009] Means for solving problems
[0010] Various aspects of the method for producing a glass article for solving the above-mentioned problems will be described below.
[0011] The manufacturing method of glass articles of method 1 comprises: a preparation step of preparing a loading platform having a platform and a base pad overlapped on the platform; a loading step of loading a glass plate on the base pad of the loading platform; and a score line forming step of forming a score line on the glass plate using a tool, and a static electricity elimination step is provided before the loading step to eliminate static electricity of the base pad of the loading platform.
[0012] According to this method, the base mat can be prevented from being charged by the static elimination step, thereby preventing the base mat from being attached to the glass plate placed on the base mat due to the static electricity.
[0013] The manufacturing method of glass articles of method 2 may also be as follows: in the static electricity elimination process of method 1, the static electricity of the base pad is eliminated by bringing the static electricity elimination component into contact with the base pad of the mounting table, the static electricity elimination component has a roller portion, and the roller portion can rotate while being in contact with the base pad, the surface resistivity of the outer peripheral surface of the roller portion is less than 110Ω / □, and the outer peripheral surface of the roller portion is adhesive, and in the static electricity elimination process, foreign matter on the base pad is removed by making it adhere to the outer peripheral surface of the roller portion.
[0014] According to this method, since the outer peripheral surface of the roller portion of the static elimination member has the above-mentioned surface resistivity, the static electricity of the base pad can be eliminated more efficiently in the static elimination process, and thus the charging of the base pad can be easily suppressed. In addition, in the static elimination process, foreign matter on the base pad is made to adhere to the outer peripheral surface of the roller portion having adhesiveness, thereby removing the foreign matter on the base pad. In this way, damage to the glass plate caused by foreign matter on the base pad in the scribing formation process can be suppressed.
[0015] The manufacturing method of the glass article of aspect 3 may be such that the roller of the static elimination member in aspect 2 has an outer peripheral layer having a butyl rubber base material. For example, such an outer peripheral layer can impart static elimination performance and adhesion performance to the outer peripheral surface of the roller.
[0016] The manufacturing method of the glass article of the fourth embodiment may also be such that in the static elimination step of the second embodiment or the third embodiment, the outer peripheral surface of the roller portion of the static elimination member is brought into contact with the entire use range of the base mat on which the glass sheet is overlapped. According to this method, the base mat can be further prevented from being charged.
[0017] The manufacturing method of the glass article of mode 5 may also be that: in any mode of modes 1 to 4, the base of the mounting table is made of a synthetic resin sheet; the arithmetic mean roughness Ra of the upper surface of the synthetic resin sheet is 3.75 μm or less; and the thickness of the synthetic resin sheet is 30 μm or more. According to this method, the quality of the scribe line formed on the glass sheet can be improved, thereby stably cutting the glass sheet.
[0018] The method for manufacturing a glass article of embodiment 6 may be such that: in embodiment 5, the Young's modulus of the synthetic resin sheet is 5000 MPa or less, and the Rockwell hardness specified in ASTM D785 is R130 or less. According to this method, the quality of the scribe line formed on the glass sheet can be improved, thereby enabling stable cutting of the glass sheet.
[0019] The method for manufacturing a glass article according to aspect 7 may be as follows: in aspect 5 or aspect 6, the synthetic resin sheet includes a layer of at least one resin selected from the group consisting of polyethylene, polyethylene terephthalate, polypropylene, and polycarbonate.
[0020] The method for producing a glass article of aspect 8 may be such that, in any one of aspects 5 to 7, the surface resistivity of the synthetic resin sheet is 5.0×10 10 Ω / □ or less. According to this method, the charging of the base can be further suppressed.
[0021] The manufacturing method of glass articles of mode 9 may also be: in any mode of mode 1 to mode 8, the above-mentioned placing platform has a suction flow path, and the suction flow path sucks the above-mentioned glass plate placed on the above-mentioned base pad, and the above-mentioned suction flow path has an opening and a through hole, and the above-mentioned opening opens toward the upper surface of the above-mentioned platform, and the above-mentioned through hole is connected to the above-mentioned opening, and penetrates the above-mentioned base pad in a manner of opening on the two main surfaces of the front and back of the above-mentioned base pad, and the above-mentioned manufacturing method further has a fixing step after the above-mentioned placing step, and the above-mentioned glass plate is fixed on the above-mentioned base pad by sucking the above-mentioned suction flow path, and the above-mentioned scribing forming step is performed after the above-mentioned fixing step. According to this method, for example, the accuracy of the scribing position can be further improved.
[0022] The method for manufacturing a glass article of aspect 10 may be such that the diameter of the through hole of the base gasket in aspect 9 is the same as or smaller than the diameter of the opening of the platform. According to this method, for example, a wider contact area between the base gasket and the glass plate can be ensured.
[0023] The method for producing a glass article according to aspect 11 may be any one of aspects 1 to 10, wherein the thickness of the glass plate is within a range of 0.005 mm to 0.5 mm.
[0024] The method for manufacturing a glass article according to aspect 12 may be such that, in any one of aspects 1 to 11, the glass plate is alkali-aluminosilicate glass.
[0025] The method for manufacturing a glass article according to Mode 13 may be as follows: in any one of Modes 1 to 12, the tool is a scribing wheel.
[0026] The method for manufacturing a glass article according to aspect 14 may be such that the scribe line forming step in any one of aspects 1 to 13 further comprises a cutting step of cutting the glass plate along the scribe line.
[0027] Effects of the Invention
[0028] The present invention can achieve the following effect: after the glass plate placed on the base is scored, the glass plate can be easily peeled off from the base. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is a perspective view explaining the preparation step in the method for producing a glass article in the embodiment.
[0030] Figure 2 This is a perspective view for explaining the static elimination process.
[0031] Figure 3 It is a perspective view for explaining the placing process and the fixing process.
[0032] Figure 4 It is a perspective view for explaining the scribe line forming process.
[0033] Figure 5 It is a perspective view for explaining the peeling process.
[0034] Figure 6 It is a three-dimensional diagram for explaining the cutting process.
[0035] Figure 7 It is along Figure 4 Cross-sectional view of line 7-7.
[0036] Figure 8 is a flow chart illustrating a method for manufacturing a glass article. DETAILED DESCRIPTION
[0037] Hereinafter, an embodiment of a method for manufacturing a glass article will be described with reference to the accompanying drawings. For the convenience of description, a part of the structure may be exaggerated or simplified in the accompanying drawings. In addition, the dimensional ratio of each part may be different from the actual one.
[0038] <Glass items>
[0039] like Figure 6 As shown, the glass article 11 of the present embodiment is obtained by cutting a glass plate G1 having a score line SL along the score line SL. The upper limit of the thickness of the glass plate G1 is, for example, 0.5 mm or less, 0.3 mm or less, 0.2 mm or less, 0.1 mm or less, 0.085 mm or less, 0.060 mm or less, 0.055 mm or less, 0.040 mm or less, or 0.035 mm or less. The lower limit of the thickness of the glass plate G1 is, for example, 0.005 mm or more and 0.01 mm or more. The thickness of the glass plate G1 is, for example, in the range of 0.005 mm or more and 0.5 mm or less.
[0040] The upper limit of the Young's modulus of the glass plate G1 is, for example, 80 GPa or less, preferably 78.0 GPa or less, 76.0 GPa or less, 75.0 GPa or less, 74.0 GPa or less, 73.0 GPa or less, 72.5 GPa or less, 72.0 GPa or less, 71.5 GPa or less, or 71.0 GPa or less. In addition, the lower limit of the Young's modulus of the glass plate G1 is preferably 65 GPa or more, more preferably 67 GPa or more, 68 GPa or more, or 69 GPa or more.
[0041] The planar shape of the glass plate G1 is not particularly limited. The planar shape of the glass plate G1 is, for example, a quadrangular shape. The scribe line SL of the glass plate G1 may be a straight line or a curved line. The glass plate G1 may also have a plurality of scribe lines SL. The plurality of scribe lines SL of the glass plate G1 may be arranged to extend parallel to each other or to intersect each other.
[0042] Examples of the glass constituting the glass plate G1 include soda glass, soda-lime glass, borosilicate glass, aluminosilicate glass, and alkali-free glass. The glass plate G1 may also be a chemically strengthened glass plate. Examples of chemically strengthened glass include soda glass and alkali-aluminosilicate glass whose glass components include alkali metal oxides. The alkali metal oxide component of the glass component included in the alkali-aluminosilicate glass is preferably selected from Li 2 O、Na 2 O, and K 2 O. The chemically strengthened glass is preferably an alkali aluminosilicate glass. The alkali aluminosilicate glass preferably contains, for example, SiO 2 :50~80%、Al 2 O 3 :5~25%、B 2 O 3 :0~15%、Li 2 O: 0-20%, Na 2 O: 1-20%, K 2 O: 0 to 10% of glass component. The glass component of the glass article 11 obtained by cutting the glass plate G1 is the same as the glass component of the glass plate G1.
[0043] <Method of manufacturing glass products>
[0044] like Figure 8 As shown, the manufacturing method of the glass article 11 includes a preparation step (step S1), a static elimination step (step S2), and a placement step (step S3). The manufacturing method of the glass article 11 includes a fixing step (step S4) and a scribe line forming step (step S5). The manufacturing method of the glass article 11 includes a peeling step (step S6) and a cutting step (step S7).
[0045] <Preparation process>
[0046] like Figure 1 and Figure 2 As shown, in the preparation process of step S1, a mounting table 12 is prepared. The mounting table 12 has a platform 13 and a base 14 arranged on the platform 13. The platform 13 is made of metal, for example. The base 14 can be made of a non-adhesive sheet. The base 14 can be made of a synthetic resin sheet, for example.
[0047] The arithmetic mean roughness Ra of the upper surface of the base pad 14 is preferably 3.75 μm or less. When the base pad 14 is made of a synthetic resin sheet, the thickness of the synthetic resin sheet is preferably 30 μm or more. The upper limit of the thickness of the synthetic resin sheet is not particularly limited, for example, it is 500 μm or less. The Young's modulus of the synthetic resin sheet is preferably 5000 MPa or less. The Rockwell hardness of the synthetic resin sheet specified by ASTM D785 is preferably R130 or less.
[0048] The surface resistivity of synthetic resin sheets can be 5.0×10 10 Ω / □ or less. Surface resistivity [Ω / □] is per 1cm 2 The surface resistivity value of the surface. The unit of surface resistivity "Ω / □" can also be recorded as "Ω / sq.". The surface resistivity can be measured in accordance with JISC2139-3-2:2018. The synthetic resin sheet may also have a coating that suppresses static electricity. In addition, the synthetic resin sheet may also contain an antistatic agent such as a surfactant or a conductive filler that suppresses static electricity.
[0049] The synthetic resin sheet may be composed of one resin layer or two or more resin layers. The synthetic resin sheet preferably includes at least one resin layer selected from polyethylene, polyethylene terephthalate, polypropylene, and polycarbonate.
[0050] <Static elimination process and placement process>
[0051] like Figure 2 As shown, in the static elimination process of step S2, the static electricity of the base pad 14 is eliminated by bringing the static elimination member 15 into contact with the upper surface of the base pad 14 of the mounting table 12. The static elimination member 15 of the present embodiment has a roller portion 16, and the roller portion 16 can rotate in a state of contacting the upper surface of the base pad 14. In detail, the static elimination member 15 has a support portion 17 that supports the roller portion 16 in a manner that enables it to rotate, and an operating portion 18 connected to the support portion 17. The operating portion 18 is configured to extend in a direction that intersects the axial direction of the roller portion 16. The operating portion 18 can be used as a grip for the operator to hold, and can also be used as a mounting portion for the robot arm to be installed. Among them, the operating portion 18 can also be omitted. At this time, the roller portion 16 that is in contact with the upper surface of the base pad 14 can also be rotated by operating the support portion 17.
[0052] From the viewpoint of further exerting the static elimination performance of the static elimination member 15, the surface resistivity of the outer peripheral surface of the roller portion 16 of the static elimination member 15 is preferably 110Ω / □ or less. The surface resistivity [Ω / □] is 110Ω / □ or less per 1 cm 2 The surface resistivity value of the surface. The unit of surface resistivity "Ω / □" can also be expressed as "Ω / sq.". The surface resistivity can be measured in accordance with JIS C2139-3-2:2018.
[0053] The outer peripheral surface of the roller portion 16 of the static elimination member 15 is preferably adhesive. In this case, the static elimination process of step S2 can make the outer peripheral surface of the roller portion 16 of the static elimination member 15 adhere to the foreign matter on the base pad 14, thereby removing the foreign matter on the base pad 14. The roller portion 16 of the static elimination member 15 preferably has an outer peripheral layer with butyl rubber as a base material. Such an outer peripheral layer can contain, for example, an adhesive, a conductive material, etc.
[0054] like Figure 3 As shown, in the placing process of step S3 , the glass plate G1 is placed on the base 14 of the placing table 12 . Figure 1 The double-dashed line indicates the range on the base pad 14 where the glass sheet G1 overlaps, i.e., the use range 14a. In the static elimination process of step S2 of the present embodiment, the outer peripheral surface of the roller portion 16 is brought into contact with the use range 14a on the base pad 14. The static elimination process of step S2 is preferably such that the outer peripheral surface of the roller portion 16 is brought into contact with the entire use range 14a.
[0055] <Fixing process>
[0056] like Figure 7 As shown, in the fixing process of step S4, after the placement process of step S3, the glass plate G1 is sucked by the suction flow path FL of the placement table 12, thereby fixing the glass plate G1 on the base pad 14. Figure 3 and Figure 7 As shown, the platform 13 is connected to a suction device P for sucking gas in the platform 13. The suction device P sucks gas in the platform 13, so that the glass plate G1 is fixed on the base pad 14.
[0057] Specifically, the suction flow path FL for sucking the glass plate G1 placed on the base pad 14 has an opening FL1 and a through hole FL2, wherein the opening FL1 opens toward the upper surface of the platform 13 and the through hole FL2 penetrates the base pad 14. Figure 1 and Figure 7 As shown, the through hole FL2 of the base pad 14 penetrates the base pad 14 in a manner of opening on the two main surfaces of the front and back of the base pad 14. The through hole FL2 of the base pad 14 is connected to the opening FL1 of the platform 13. The method of forming the through hole FL2 on the base pad 14 includes, for example, a method of piercing the base pad 14 with a needle, a method of irradiating the base pad 14 with laser light, etc. The through hole FL2 of the base pad 14 can be formed before the base pad 14 is arranged on the platform 13, and can also be formed after the base pad 14 is arranged on the platform 13.
[0058] The size relationship between the diameter D1 of the opening FL1 of the platform 13 and the diameter D2 of the through hole FL2 of the base pad 14 is not particularly limited. The diameter D2 of the through hole FL2 of the base pad 14 is preferably the same as or smaller than the diameter D1 of the opening FL1 of the platform 13, and more preferably smaller than the diameter D1 of the opening FL1. In this case, the contact area between the base pad 14 and the glass plate G1 can be more widely ensured.
[0059] <Scribing line formation process>
[0060] like Figure 4 As shown, in the scribe line forming process of step S5, a scribe line SL is formed on the glass plate G1 using a tool T. The scribe line SL is a crack line formed continuously on the predetermined cutting line of the glass plate G1. The depth of the scribe line SL does not penetrate the glass plate G1 in the thickness direction. The scribe line SL is formed at a position that does not overlap with the opening FL1 of the stage 13 and the through hole FL2 of the base pad 14 in a plan view.
[0061] The tool T used in the scribe line forming process of step S5 may be a rotatable scribing wheel, a non-rotatable scribing tool, etc. The tool T is preferably a scribing wheel.
[0062] In the scribe line forming step of step S5, the tool T and the glass plate G1 are relatively moved in a state where the tool T is in contact with the glass plate G1. In the scribe line forming step of step S5 of the present embodiment, the scribe line SL is formed by moving the scribing wheel on the glass plate G1.
[0063] <Peeling process>
[0064] like Figure 5 As shown, in the peeling process of step S6, the glass plate G1 on the base pad 14 of the mounting table 12 is peeled off from the base pad 14. In the peeling process of step S6 of the present embodiment, the fixation of the glass plate G1 performed in the fixing process of the above-mentioned step S4 is first released. Next, the unloading table 19 on which the glass plate G1 can be placed is adjacently arranged next to the mounting table 12. Then, the glass plate G1 is moved horizontally toward the unloading table 19. In this way, the glass plate G1 is peeled off from the base pad 14, and the glass plate G1 is moved from the mounting table 12 to the unloading table 19. Among them, the peeling process of step S6 can also be, for example, using an adsorption mechanism to adsorb the glass plate G1, and the glass plate G1 is moved above the base pad 14, so that the glass plate G1 is peeled off from the base pad 14.
[0065] <Cutting process>
[0066] like Figure 6As shown, in the cutting process of step S7, the glass plate G1 having the scribe line SL is cut along the scribe line SL. The cutting process of step S7, for example, bends the glass plate G1 by applying an external force to the scribe line SL. In this way, the glass plate G1 is cut by deepening the scribe line SL. When the external force is applied to the glass plate G1 having the scribe line SL, it is preferred that the glass plate G1 is bent by generating a tensile stress on the main surface side having the scribe line SL among the two main surfaces of the glass plate G1. In the cutting process, for example, the thermal stress generated by the temperature difference of the glass plate G1 can be used to deepen the scribe line SL, thereby cutting the glass plate G1.
[0067] <Test example>
[0068] Next, a test example will be described.
[0069] (Test Example 1)
[0070] In Experimental Example 1, a preparation process of step S1, a static elimination process of step S2, a placement process of step S3, a fixing process of step S4, a scribe line forming process of step S5, a peeling process of step S6, and a cutting process of step S7 are performed to obtain a glass article 11.
[0071] The glass plate G1 used in Test Example 1 is alkali-aluminosilicate glass, and as a glass component, it contains SiO 2 :61.5%、Al 2 O 3 :18.0%、B 2 O 3 :0.5%、K 2 O: 2.0%, Na 2 O: 14.5%, Li 2 O: 0.1%, MgO: 3.0%, SnO 2 : 0.4%. The glass plate G1 has a thickness of 35 μm and a planar size of 500 mm×500 mm.
[0072] The base pad 14 used in Test Example 1 is a synthetic resin sheet (polyethylene terephthalate (PET) sheet, surface resistivity: 1.0×10 17 Ω / □, thickness: 100μm, arithmetic mean roughness Ra: 0.06μm).
[0073] The static dissipation member 15 used in Test Example 1 has a roller portion 16. The roller portion 16 of the static dissipation member 15 has an outer peripheral layer having a butyl rubber base material. The surface resistivity of the outer peripheral surface of the roller portion 16 of the static dissipation member 15 is 110Ω / □ or less.
[0074] In the scribing forming process of step S5, a scribing wheel is used as the tool T. The moving conditions of the scribing wheel are: a load of 1N and a moving speed of 500mm / s. The plane size of the glass article 11 is 250mm×500mm.
[0075] In the cutting process of step S7, the glass sheet G1 is bent so as to generate tensile stress on the main surface side having the scribe line SL. In this way, the glass sheet G1 is broken along the scribe line SL to cut out the glass sheet G1.
[0076] (Test Examples 2 and 3)
[0077] As shown in Table 1, in Test Examples 2 and 3, glass articles 11 were obtained in the same manner as in Example 1 except that the base gaskets 14 having different surface resistivities or thicknesses were used.
[0078] (Test Example 4)
[0079] In Test Example 4, the glass article 11 was manufactured in the same manner as in Test Example 1 except that the static elimination step in step S2 was omitted.
[0080] (Determination of acceptance of the peeling process)
[0081] In Test Examples 1 to 4, the pass judgment was performed after the peeling process of step S6, and the glass plate G1 having the scribe line SL was successfully peeled off from the base 14 as pass. The production of the glass article 11 and the pass judgment of the peeling process were performed 4 times in total, and the pass rate was calculated. The results are shown in Table 1.
[0082] (Qualification of cutting process)
[0083] In Test Examples 1 to 3, the pass determination was performed after the cutting process of step S7, and the case where the cutting was successful without defects such as damage was considered as pass. The pass determination of the manufacturing and cutting process of the glass article 11 was performed 100 times, and the pass rate was calculated. The results are shown in Table 1.
[0084]
Table 1
[0085]
[0086] The pass rate of the peeling process in Test Examples 1 to 3 was 100%. On the other hand, the pass rate of the peeling process in Test Example 4 was 0%. The pass rate of the dicing process in Test Examples 1 to 3 was 50% or more.
[0087] <Function and Effect>
[0088] Next, the function and effect of this embodiment will be described.
[0089] (1) The method for manufacturing a glass article 11 includes a preparation step of step S1, a static elimination step of step S2, a placement step of step S3, and a scribe line forming step of step S5. In the preparation step of step S1, a placement table 12 having a platform 13 and a base 14 arranged on the platform 13 is prepared. In the static elimination step of step S2, the base 14 of the placement table 12 is statically eliminated before the placement step of step S3. In the placement step of step S3, a glass plate G1 is placed on the base 14 of the placement table 12. In the scribe line forming step of step S5, a scribe line SL is formed on the glass plate G1 using a tool T.
[0090] According to this method, the static electricity elimination process of step S2 can suppress the charging of the base mat 14. In this way, the glass plate G1 placed on the base mat 14 and the base mat 14 can be suppressed from being attached to each other due to the charging of the base mat 14. Therefore, after the scribe line forming process of step S5, the glass plate G1 having the scribe line SL can be easily peeled off from the base mat 14.
[0091] Therefore, in the peeling process of step S6, it is easy to avoid applying excessive force to the glass plate G1 having the scribe line SL. Thus, in the peeling process of step S6, it is easy to suppress damage to the glass plate G1 having the scribe line SL.
[0092] (2) In the static elimination process of step S2 of the method for manufacturing the glass article 11, static electricity of the base pad 14 is eliminated by bringing the static elimination member 15 into contact with the upper surface of the base pad 14 of the mounting table 12. The static elimination member 15 has a roller portion 16, and the roller portion 16 can rotate in a state of being in contact with the upper surface of the base pad 14. The surface resistivity of the outer peripheral surface of the roller portion 16 of the static elimination member 15 is preferably 110Ω / □ or less. In this case, static electricity of the base pad 14 can be eliminated more efficiently in the static elimination process of step S2, so that the charging of the base pad 14 can be easily suppressed. In addition, the outer peripheral surface of the roller portion 16 of the static elimination member 15 is preferably adhesive. In this case, in the static elimination process of step S2, foreign matter on the base pad 14 is removed by making it adhere to the outer peripheral surface of the roller portion 16. In this way, damage to the glass sheet G1 caused by foreign matter on the base pad 14 in the scribe forming process of step S5 can be suppressed. The roller portion 16 of the static eliminating member 15 preferably has an outer peripheral layer having a butyl rubber base material, for example.
[0093] (3) In the static elimination process of step S2, it is preferred that the outer peripheral surface of the roller portion 16 of the static elimination member 15 is brought into contact with the entire use range 14a on the base pad 14 where the glass plate G1 overlaps. In this case, the charging of the base pad 14 can be further suppressed. In addition, when the outer peripheral surface of the roller portion 16 of the static elimination member 15 has adhesiveness, foreign matter can be removed from the entire range on the base pad 14 where the glass plate G1 is placed. In this way, damage to the glass plate G1 caused by foreign matter on the base pad 14 in the scribing formation process of step S5 can be suppressed.
[0094] (4) The base pad 14 of the mounting table 12 can be made of, for example, a synthetic resin sheet. The arithmetic mean roughness Ra of the upper surface of the synthetic resin sheet is preferably 3.75 μm or less. The thickness of the synthetic resin sheet is preferably 30 μm or more. The Young's modulus of the synthetic resin sheet is preferably 5000 MPa or less. The Rockwell hardness of the synthetic resin sheet as specified in ASTM D785 is preferably R130 or less.
[0095] In this case, the glass sheet G1 can be cut stably by improving the quality of the scribe line SL formed on the glass sheet G1. Therefore, the quality of the glass article 11 can be improved, or the yield of the glass article 11 can be improved.
[0096] (5) In the manufacturing method of the glass article 11, after the placement step of step S3, a fixing step (step S4) is further provided to fix the glass plate G1 on the base 14. In the fixing step of step S4, the glass plate G1 is sucked by the suction flow path FL of the placement table 12. In the manufacturing method of the glass article 11, after the fixing step of step S4, a scribe line forming step of step S5 is performed. At this time, for example, the accuracy of the position of the scribe line SL can be further improved. Therefore, the quality of the glass article 11 cut in the cutting step of step S7 can be improved, or the yield rate of the glass article 11 can be improved.
[0097] (6) The mounting table 12 is preferably configured such that the diameter D2 of the through hole FL2 of the base pad 14 is the same as or smaller than the diameter D1 of the opening FL1 of the platform 13. In this case, for example, a wider contact area between the base pad 14 and the glass plate G1 can be ensured. Therefore, for example, the glass plate G1 can be preferably protected by the base pad 14.
[0098] (7) In the method for manufacturing the glass article 11, a cutting step (step S7) is further provided after the scribe line forming step of step S5 to cut the glass sheet G1 along the scribe line SL. In this case, the glass article 11 cut along the scribe line SL can be provided.
[0099] <Change Example>
[0100] The above-mentioned embodiment can also be implemented with modifications as follows. The above-mentioned embodiment and the following modifications can be implemented in combination with each other within the scope of no technical contradiction.
[0101] In the method for manufacturing the glass article 11, the fixing step of step S4 may be omitted.
[0102] In the method for manufacturing the glass article 11 , the peeling step of step S6 may be performed after the cutting step of step S7 . Specifically, the cutting step of step S7 may be a step of cutting the glass sheet G1 while it is still laminated on the base mat 14 .
[0103] The pad 14 may also be made of rubber or an elastomer. In addition, the base pad 14 may also have a laminated structure in which layers of different materials such as a layer made of rubber, a layer made of synthetic resin, and a layer made of elastomer are laminated.
[0104] In the method for manufacturing the glass article 11, the static elimination step of step S2 may use a static elimination member 15 having a brush portion that contacts the backing 14. In this case, the brush portion of the static elimination member 15 may be used to remove foreign matter on the backing 14.
[0105] In the manufacturing method of the glass article 11, in the static elimination process of step S2, the static elimination member 15 is brought into contact with the portion within the use range 14a of the base mat 14, but the static elimination member 15 may be brought into contact with the portion outside the use range 14a of the base mat 14 to eliminate static electricity on the base mat 14. In addition, the static elimination process of step S2 may omit the step of removing foreign matter on the base mat by using the static elimination member 15.
[0106] The method for manufacturing the glass article 11 may be changed to a method in which the peeling step of step S6 and the cutting step of step S7 are not performed, and a laminate consisting of the glass sheet G1 having the scribe line SL and the base 14 is manufactured as the glass article 11. In addition, the method for manufacturing the glass article 11 may be changed to a method in which the glass sheet G1 having the scribe line SL is manufactured as the glass article 11 without performing the cutting step of step S7.
[0107] Description of Reference Numerals
[0108] 11 Glass objects
[0109] 12 Loading table
[0110] 13 Platform
[0111] 14 Base
[0112] 14a Scope of use
[0113] 15. Static elimination component
[0114] 16 Roller
[0115] 17 Support
[0116] 18 Operation Department
[0117] 19 move out stage
[0118] D1, D2 diameter
[0119] FL suction flow path
[0120] FL1 opening
[0121] FL2 through hole
[0122] G1 Glass Plate
[0123] SL Line
[0124] T Tools
[0125] P suction device
Claims
1. A method for manufacturing a glass article, comprising: A preparation step of preparing a mounting table having a platform and a base pad overlapped and arranged on the platform; a placing step of placing the glass plate on the base pad of the placing table; and The step of forming a scribe line is to form a scribe line on the glass plate using a tool. The placing step may be preceded by a static elimination step of eliminating static electricity from the base pad of the placing table.
2. The method for manufacturing a glass article according to claim 1, wherein: In the static elimination step, the static electricity on the base pad is eliminated by bringing the static elimination member into contact with the base pad of the mounting table. The static elimination member has a roller portion that can rotate while being in contact with the base pad. The surface resistivity of the outer peripheral surface of the roller portion is 110Ω / □ or less. The outer peripheral surface of the roller has adhesiveness. In the static elimination step, the foreign matter on the base mat is removed by causing the foreign matter on the base mat to adhere to the outer peripheral surface of the roller portion.
3. The method for manufacturing a glass article according to claim 2, wherein: The roller portion of the static eliminating member has an outer peripheral layer having a butyl rubber base material.
4. The method for manufacturing a glass article according to claim 2 or claim 3, wherein: In the static elimination step, the outer peripheral surface of the roller portion of the static elimination member is brought into contact with the entire use range of the base mat on which the glass plate is overlapped.
5. The method for manufacturing a glass article according to claim 1, wherein: The bottom pad of the mounting table is made of a synthetic resin sheet. The arithmetic mean roughness Ra of the upper surface of the synthetic resin sheet is 3.75 μm or less. The synthetic resin sheet has a thickness of 30 μm or more.
6. The method for manufacturing a glass article according to claim 5, wherein: The Young's modulus of the synthetic resin sheet is 5000 MPa or less. The Rockwell hardness specified by ASTM D785 is R130 or less.
7. The method for manufacturing a glass article according to claim 5 or claim 6, wherein: The synthetic resin sheet includes a resin layer of at least one selected from the group consisting of polyethylene, polyethylene terephthalate, polypropylene, and polycarbonate.
8. The method for manufacturing a glass article according to claim 5 or claim 6, wherein: The surface resistivity of the synthetic resin sheet is 5.0×10 10 Ω / □ or less.
9. The method for manufacturing a glass article according to claim 1 or claim 2, wherein: The mounting table has a suction flow path for sucking the glass plate mounted on the base pad. The suction flow path has an opening and a through hole. The opening portion opens toward the upper surface of the platform. The through hole is connected to the opening and penetrates the base pad in a manner of opening on two main surfaces of the front and back sides of the base pad. The manufacturing method further comprises a fixing step after the placing step, wherein the glass plate is fixed on the base pad by sucking the glass plate using the suction flow path. The scribe line forming step is performed after the fixing step.
10. The method for manufacturing a glass article according to claim 9, wherein: The diameter of the through hole of the base pad is the same as or smaller than the diameter of the opening of the platform.
11. The method for manufacturing a glass article according to claim 1 or claim 2, wherein: The thickness of the glass plate is within a range of 0.005 mm to 0.5 mm.
12. The method for manufacturing a glass article according to claim 11, wherein: The glass plate is alkali-aluminosilicate glass.
13. The method for manufacturing a glass article according to claim 1 or claim 2, wherein: The above tool is a scribing wheel.
14. The method for manufacturing a glass article according to claim 1 or claim 2, wherein: The scribe line forming step is followed by a cutting step of cutting the glass sheet along the scribe line.