Glass manufacturing apparatus and glass manufacturing method

Abstract

A technology is provided that suppresses the deterioration of glass quality. A glass manufacturing device comprises a melting device, a molding device, a conveying device, and a moving device. The melting device melts glass raw materials to produce molten glass. The molding device molds the molten glass produced by the melting device. The conveying device is located between the melting device and the molding device and conveys the molten glass. The moving device moves the position of the conveying device. The moving device includes a horizontal direction adjustment mechanism that adjusts the position of the conveying device in both directions, a first horizontal direction and a second horizontal direction different from the first horizontal direction.

Description

Technology Field

[0001] The present disclosure relates to a glass manufacturing apparatus and a glass manufacturing method. Background Technology

[0002] The glass manufacturing apparatus is equipped with a melting device, a forming device, and a slow cooling device. The melting device melts glass raw materials and produces molten glass. The forming device forms the molten glass into a desired shape. The slow cooling device slow cools the glass formed by the forming device. Subsequently, the glass product is obtained.

[0003] The glass manufacturing apparatus described in Patent Document 1 is equipped with a conveying device. The conveying device is located between the melting device and the molding device and conveys the molten glass. In addition to the conveying device, a clarifying device may be provided between the melting device and the molding device. The clarifying device removes air bubbles contained in the molten glass and clarifies the molten glass. Prior art literature

[0004] International Publication No. 2019 / 102895 The problem to be solved

[0005] Before starting glass manufacturing, the glass manufacturing apparatus is heated to the operating temperature. At that time, each of the multiple devices constituting the glass manufacturing apparatus undergoes thermal expansion. Therefore, to prevent interference between the multiple devices, a gap is provided between them. However, if the gap is too large, molten glass leaks out. On the other hand, if the gap is too small, adjacent devices are compressed against each other, causing the devices to break. If a device breaks, the molten glass comes into contact with surrounding bricks, etc., and the quality of the glass deteriorates. Additionally, the connections between adjacent devices may become misaligned in a direction perpendicular to the flow direction of the molten glass. Due to this misalignment, delays occur in the flow of the molten glass, which may result in defects such as rims.

[0006] One aspect of the present disclosure provides a technology that suppresses the deterioration of glass quality. means of solving the problem

[0007] A glass manufacturing apparatus according to one embodiment of the present disclosure comprises a melting device, a molding device, a conveying device, and a moving device. The melting device melts glass raw materials and produces molten glass. The molding device molds the molten glass produced by the melting device. The conveying device is positioned between the melting device and the molding device and conveys the molten glass. The moving device moves the position of the conveying device. The moving device includes a horizontal direction adjustment mechanism that adjusts the position of the conveying device in both directions of a first horizontal direction and a second horizontal direction different from the first horizontal direction. Effects of the invention

[0008] According to one embodiment of the present disclosure, the deterioration of the quality of the glass can be suppressed. Brief explanation of the drawing

[0009] FIG. 1 is a drawing showing a glass manufacturing apparatus according to one embodiment. FIG. 2 is a flowchart illustrating a glass manufacturing method according to one embodiment. FIG. 3 is a cross-sectional view showing an example of a melting device, a molding device, and a conveying device in glass manufacturing. FIG. 4 is a cross-sectional view showing an example of a melting device, a molding device, and a conveying device during heat rise. FIG. 5 (A) is a side view showing an example of a moving device, and FIG. 5 (B) is a top view of the moving device of FIG. 5 (A). FIG. 6 (A) is a side view showing another example of a moving device, and FIG. 6 (B) is a top view of the moving device of FIG. 6 (A). FIG. 7 (A) is a side view showing an example of a second moving device, and FIG. 7 (B) is a top view of the second horizontal direction adjustment mechanism of the second moving device of FIG. 7 (A). Specific details for implementing the invention

[0010] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In addition, in each drawing, identical or corresponding components are given the same reference numerals, and descriptions may be omitted. Furthermore, in each drawing, the X-axis direction, the Y-axis direction, and the Z-axis direction are directions perpendicular to each other; the X-axis direction and the Y-axis direction are horizontal directions, and the Z-axis direction is a vertical direction. The X-axis direction is the flow direction of the molten glass, and the Y-axis direction is the width direction of the molten glass.

[0011] First, with reference to FIG. 1, a glass manufacturing apparatus (1) according to the present embodiment will be described. The glass manufacturing apparatus (1) is equipped with a melting apparatus (2), a conveying apparatus (3), a molding apparatus (4), a slow cooling apparatus (5), and a processing apparatus (6).

[0012] The melting device (2) melts the glass raw material to produce molten glass. The glass raw material is manufactured by mixing multiple types of materials. The glass raw material may include a clarifying agent. The clarifying agent is sulfur trioxide, chloride, or fluoride, etc. The glass raw material may include glass cullet to recycle the glass. The glass raw material may be a powdered raw material or an aggregated raw material formed by aggregating the powdered raw material. The glass raw material is determined according to the composition of the glass.

[0013] Glass is, for example, alkali-free glass, aluminosilicate glass, borosilicate glass, or soda-lime glass. Alkali-free glass means glass that does not substantially contain alkali metal oxides such as Na2O, K2O, etc. Here, "substantially not containing alkali metal oxides" means that the total content of alkali metal oxides is 0.1 mass% or less.

[0014] Alkali-free glass contains, for example, SiO2: 54% to 66%, Al2O3: 10% to 23%, B2O3: 6% to 12%, and MgO+CaO+SrO+BaO: 8% to 26% in mass % based on oxides.

[0015] In order to have a high deformation point, alkali-free glass preferably contains SiO2: 54% to 68%, Al2O3: 10% to 25%, B2O3: 0.1% to 5.5%, and MgO+CaO+SrO+BaO: 8% to 26% in mass% based on oxides.

[0016] The melting device (2) is continuous and continuously supplies glass raw materials and manufactures molten glass. The amount of glass raw materials input per unit time is approximately equal to the amount of molten glass discharged per unit time.

[0017] The conveying device (3) is located between the melting device (2) and the molding device (4) and conveys the molten glass. Details of the conveying device (3) will be described later. In addition to the conveying device (3), a clarifying device (7) (see FIG. 3) may be provided between the melting device (2) and the molding device (4).

[0018] The clarification device (7) removes bubbles contained in the molten glass before forming the molten glass obtained from the melting device (2) with the forming device (4). As a method for removing bubbles, one or more methods selected from, for example, a method of depressurizing the surrounding atmosphere of the molten glass and a method of heating the molten glass to a high temperature are used.

[0019] The molding device (4) molds the molten glass obtained from the melting device (2) into glass of a desired shape. As a molding method to obtain plate-shaped glass, the float method, fusion method, or roll-out method is used. As a molding method to obtain tubular glass, the bellow method or tawn method is used.

[0020] The slow cooling device (5) slow cools the glass formed by the forming device (4). The slow cooling device (5) has, for example, a slow cooling furnace and a conveying roller that conveys the glass in a desired direction inside the slow cooling furnace. The conveying rollers are arranged in multiple numbers, for example, spaced apart in the horizontal direction. The glass is slow cooled while being conveyed from the inlet to the outlet of the slow cooling furnace. When the glass is slow cooled, glass with less residual deformation is obtained.

[0021] The processing device (6) processes the glass cooled by the cooling device (5) into a desired shape. The processing device (6) may be one or more selected from, for example, a cutting device, a grinding device, a polishing device, and a coating device. The cutting device cuts the glass cooled by the cooling device (5). The cutting device forms a scribe line on the glass cooled by the cooling device (5), for example, and cuts the glass along the scribe line. The scribe line is formed using a cutter or a laser beam. The grinding device grinds the glass cooled by the cooling device (5). The polishing device polishes the glass cooled by the cooling device (5). The coating device forms a desired film on the glass cooled by the cooling device (5).

[0022] Next, with reference to FIG. 2, a method for manufacturing glass according to the present embodiment will be described. As shown in FIG. 2, the method for manufacturing glass includes melting (step S11), conveying (step S12), forming (step S13), slow cooling (step S14), and processing (step S15). A melting device (2) performs melting (step S11), a forming device (4) performs forming (step S13), a slow cooling device (5) performs slow cooling (step S14), and a processing device (6) performs processing (step S15).

[0023] Additionally, the method for manufacturing glass may further include clarification. Clarification is the removal of air bubbles contained in the molten glass and is performed after melting (step S11) and before forming (step S13). Clarification is performed, for example, during conveying (step S12).

[0024] Next, with reference to FIGS. 3 and 4, the conveying device (3) and the like will be described. The glass manufacturing device (1) is equipped with a plurality of conveying devices (3A to 3E) between the melting device (2) and the molding device (4). In addition, the glass manufacturing device (1) is equipped with a plurality of moving devices (8A to 8E) that move the plurality of conveying devices (3A to 3E) individually. The moving device (8A), although details will be described later, adjusts the position of the conveying device (3A) in both directions: a first horizontal direction (e.g., X-axis direction) and a second horizontal direction different from the first horizontal direction (e.g., Y-axis direction). In addition, the moving device (8A) adjusts the position of the conveying device (3A) in the vertical direction. The other moving devices (8B to 8E) are likewise.

[0025] As illustrated in FIG. 4, when the heat rises, a gap is formed between the melting device (2) and the conveying device (3A). Additionally, when the heat rises, a gap is formed between adjacent conveying devices (e.g., conveying device (3A) and conveying device (3B)). Since molten glass G is not conveyed when the heat rises, molten glass G does not leak even if the gap is large. Interference between devices can be prevented, thereby preventing damage to the devices. As a result, during the manufacture of glass, it is possible to prevent foreign matter from being mixed into the molten glass G by the molten glass G coming into contact with insulating bricks, etc., provided around the conduits (31A to 31D) and lip (37E) described later, and furthermore, it is possible to prevent the quality of the glass from deteriorating.

[0026] After the heat rise ends and before the glass manufacturing process begins, the gap between the melting device (2) and the conveying device (3A) is narrowed in the X-axis direction to the extent that molten glass G does not leak. Likewise, the gap between adjacent conveying devices (e.g., conveying device (3A) and conveying device (3B)) is narrowed in the X-axis direction. As a result of the narrowing, these gaps may be eliminated.

[0027] However, due to the rise in temperature, the connections of adjacent devices may become misaligned in a direction perpendicular to the flow direction of the molten glass G (e.g., the Y-axis or Z-axis direction). If this misalignment is left unchecked and the manufacture of glass begins, delays may occur in the flow of the molten glass G, and defects such as rims may occur.

[0028] Thus, in the present embodiment, after the heat rise ends and before the glass manufacturing begins, the conveyor (3A) is moved in the Y-axis direction or the Z-axis direction relative to the melting device (2). Likewise, adjacent conveyors (e.g., conveyor (3A) and conveyor (3B)) are moved relative to each other in the Y-axis direction or the Z-axis direction. Additionally, the conveyor (3E) is moved in the Y-axis direction or the Z-axis direction relative to the molding device (4).

[0029] After that, as shown in FIG. 3, the conveying device (3A to 3E) conveys the molten glass G from the melting device (2) to the molding device (4) and starts the manufacture of glass. Since the connecting ports of adjacent devices are aligned in advance, it is possible to suppress stagnation in the flow of the molten glass G, thereby suppressing the occurrence of defects such as rims.

[0030] As illustrated in FIG. 3, a clarification device (7) may be provided between the melting device (2) and the molding device (4). The clarification device (7) is, for example, positioned between the conveying devices (3A to 3B) and the conveying devices (3C to 3E). Hereinafter, with reference to FIG. 3, various devices located between the melting device (2) and the molding device (4) will be described.

[0031] The conveying device (3A) includes a conduit (31A) for sending molten glass G. The conduit (31A) forms a flow path for molten glass G and guides the molten glass G in a desired direction. The conduit (31A) is, for example, made of metal. The molten glass G can be heated by heating the metal conduit (31A) through an electric current.

[0032] The conduit (31A) may be formed from a metal comprising one or more selected from, for example, platinum (Pt), rhodium (Rh), tungsten (W), iridium (Ir) and molybdenum (Mo). The metal includes alloys. Pt, Rh, W, Ir and Mo have excellent corrosion resistance to molten glass G.

[0033] Additionally, the conduit (31A) may be made of refractory brick. Preferably, a cast brick is used as the refractory brick because it has excellent heat resistance and corrosion resistance to molten glass G. The molten glass G can be heated by providing a heating device around the conduit (31A). The same applies to the other conduits (31B to 31D).

[0034] The conduit (31A) includes, for example, a vertical tube (32A) that is open upward and two horizontal tubes (33A, 34A). A stirring blade (101A) of a stirring device (100A) is inserted into the vertical tube (32A) from above. The stirring device (100A) stirs and homogenizes molten glass G inside the vertical tube (32A). The vertical tube (32A) is provided between the two horizontal tubes (33A, 34A). The horizontal tube (33A) sends molten glass G from the melting device (2) to the vertical tube (32A). The horizontal tube (34A) sends molten glass G from the vertical tube (32A) to the horizontal tube (33B) of another conveying device (3B).

[0035] The conveying device (3A) includes an insulating member (35A) that insulates the conduit (31A) and a supporting member (36A) that supports the conduit (31A) through the insulating member (35A). The insulating member (35A) is a ceramic such as an insulating brick. The supporting member (36A) is not particularly limited but, for example, is a mesh-shaped basket, surrounds the insulating member (35A), and integrates a plurality of insulating bricks constituting the insulating member (35A) into a desired shape.

[0036] The conveying device (3B), like the conveying device (3A), includes a conduit (31B) for sending molten glass G. The conduit (31B) includes, for example, a vertical pipe (32B) that is open upward and a horizontal pipe (33B). A rising pipe (72) of the clarification device (7), described later, is inserted into the vertical pipe (32B) from above. The horizontal pipe (33B) sends molten glass G from the horizontal pipe (34A) of the conveying device (3B) to the vertical pipe (32B). Like the conveying device (3A), the conveying device (3B) may include an insulating member (35B) that insulates the conduit (31B), and may further include a supporting member (36B) that supports the conduit (31B) through the insulating member (35B).

[0037] The clarification device (7) includes, for example, a decompression degassing tank (71), a rising pipe (72), and a descending pipe (73). The decompression degassing tank (71) degasses molten glass G under reduced pressure. The upper space of the decompression degassing tank (71) is depressurized to a pressure lower than atmospheric pressure. The rising pipe (72) is inserted from above into the vertical pipe (32B) of the conveying device (3B) and raises the molten glass G from the vertical pipe (32B) to the decompression degassing tank (71) due to the pressure difference. Meanwhile, the descending pipe (73) is inserted from above into the vertical pipe (32C) of the conveying device (3C) and lowers the molten glass G from the decompression degassing tank (71) to the vertical pipe (32C) due to the pressure difference.

[0038] The conveying device (3C), like the conveying device (3A), includes a conduit (31C) for sending molten glass G. The conduit (31C) includes, for example, a vertical pipe (32C) open upward and a horizontal pipe (34C). A downward pipe (73) of a clarification device (7) is inserted into the vertical pipe (32C) from above. The horizontal pipe (34C) sends molten glass G from the vertical pipe (32C) to the horizontal pipe (33D) of another conveying device (3D). The conveying device (3C), like the conveying device (3A), may include an insulating member (35C) for insulating the conduit (31C) and may further include a supporting member (36C) for supporting the conduit (31C) through the insulating member (35C).

[0039] The conveying device (3D), like the conveying device (3A), includes a conduit (31D) for sending molten glass G. The conduit (31D) includes, for example, a vertical tube (32D) open upward and two horizontal tubes (33D, 34D). A stirring blade (101B) of a stirring device (100B) is inserted into the vertical tube (32D) from above. The stirring device (100B) stirs the molten glass G inside the vertical tube (32D) to homogenize it. The vertical tube (32D) is provided between the two horizontal tubes (33D, 34D). The horizontal tube (33D) sends molten glass G from the horizontal tube (34C) of the conveying device (3C) to the vertical tube (32D). The horizontal pipe (34D) sends molten glass G from the vertical pipe (32D) to another conveying device (3E). The conveying device (3D) may include an insulating member (35D) that insulates the conduit (31D), just like the conveying device (3A), and may further include a supporting member (36D) that supports the conduit (31D) through the insulating member (35D).

[0040] Unlike other conveying devices (3A to 3D), the conveying device (3E) does not include a conduit for sending molten glass G, but instead includes a lip (37E) that continuously supplies molten glass G over molten metal M. In this case, the forming device (4) forms the molten glass G into a strip-shaped glass ribbon using the float method. The forming device (4) includes a float bath (41) that receives the molten metal M. The conveying device (3E) includes a twill (38E) that controls the flow rate of molten glass G flowing over the lip (37E). The larger the gap between the twill (38E) and the lip (37E), the greater the flow rate of molten glass G.

[0041] In addition, as mentioned above, the molding method is not limited to the float method. In addition, as mentioned above, the clarification method is not limited to the vacuum degassing method. In addition, the conduits (31A to 31D) are not limited to the configuration shown in FIG. 3. For example, the conduits (31A to 31D) may include inclined tubes inclined with respect to the horizontal plane. In addition, the positions in the vertical direction of the horizontal tubes (33A, 34A) may differ. The same applies to the horizontal tubes (33D, 34D).

[0042] Next, with reference to FIG. 5, a moving device (8A) according to the present embodiment will be described. Other moving devices (8B to 8E) are configured in the same way as the moving device (8A) shown in FIG. 5, so they are omitted from illustration and description. The moving device (8A) includes a horizontal direction adjustment mechanism (81). The horizontal direction adjustment mechanism (81) adjusts the position of the conveying device (3A) in both directions of a first horizontal direction and a second horizontal direction different from the first horizontal direction.

[0043] In addition, in this embodiment, the first horizontal direction is the X-axis direction and the second horizontal direction is the Y-axis direction, but the technology of this disclosure is not limited to this. By adjusting the position of the conveying device (3A) in two different horizontal directions, a gap for preventing interference can be formed during heat rise, and also, after the heat rise ends and before the glass manufacturing begins, the misalignment between the connecting parts can be reduced.

[0044] The horizontal direction adjustment mechanism (81) includes a first unit (82) that adjusts the position of the conveyor device (3A) in the X-axis direction, for example. Additionally, the horizontal direction adjustment mechanism (81) includes a second unit (83) that adjusts the position of the conveyor device (3A) in the Y-axis direction. The position of the conveyor device (3A) in the X-axis direction and the position of the conveyor device (3A) in the Y-axis direction can be adjusted individually.

[0045] The first unit (82) includes, for example, a bolt (82a) and a nut (82b, 82c) that is rotatably coupled relative to the bolt (82a). The axial direction of the bolt (82a) is the X-axis direction. The first unit (82) moves the conveyor device (3A) in the X-axis direction by the rotation of the bolt (82a) or the nut (82b, 82c).

[0046] For example, nuts (82b, 82c) are in contact with a fixed part (11) that is fixed to the floor Fr of a building and are positioned with the fixed part (11) in between. And, bolt (82a) is connected to a conveying device (3A) through an L-shaped angle (84) and a second unit (83). Bolt (82a) is fixed to the L-shaped angle (84) by welding or the like.

[0047] In this case, the worker or the work robot moves the conveyor device (3A) in the X-axis direction by rotating the nuts (82b, 82c). To move the conveyor device (3A) in the X-axis negative direction, the nut (82c) is first loosened, and then the nut (82b) is rotated to move the bolt (82a) in the X-axis negative direction. Meanwhile, to move the conveyor device (3A) in the X-axis forward direction, the nut (82b) is first loosened, and then the nut (82c) is rotated to move the bolt (82a) in the X-axis forward direction. After that, the worker or the work robot tightens the nuts (82b, 82c) to restrict the movement of the conveyor device (3A) in the X-axis direction. To restrict movement, the nuts (82b, 82c) may be welded.

[0048] Additionally, the combination of operations of the bolt (82a) and the nut (82b, 82c) is not particularly limited. It is sufficient that the conveying device (3A) can be moved in the X-axis direction, and the nut (82b, 82c) may be moved by the rotation of the nut (82b, 82c), the nut (82b, 82c) may be moved by the rotation of the bolt (82a), and the bolt (82a) may be moved by the rotation of the bolt (82a).

[0049] The first unit (82) is provided at the four corners of the conveying device (3A) when viewed from above, for example. Additionally, the number and location of the first unit (82) are not particularly limited. Furthermore, the structure of the first unit (82) is not particularly limited, and for example, a hydraulic cylinder may be used as the first unit (82).

[0050] The second unit (83) includes, for example, a bolt (83a) and a nut (83b, 83c) that is rotatably coupled relative to the bolt (83a). The axial direction of the bolt (83a) is the Y-axis direction. The second unit (83) moves the conveyor device (3A) in the Y-axis direction by the rotation of the bolt (83a) or the nut (83b, 83c).

[0051] For example, the nuts (83b, 83c) are in contact with the L-shaped angle (84) and are positioned with the L-shaped angle (84) in between. And the bolt (83a) is fixed to the conveying device (3A) by welding or the like.

[0052] In this case, the worker or the work robot moves the conveyor device (3A) in the Y-axis direction by rotating the nuts (83b, 83c). To move the conveyor device (3A) in the Y-axis forward direction, the nut (83c) is first loosened, and then the nut (83b) is rotated to move the bolt (83a) in the Y-axis forward direction. Meanwhile, to move the conveyor device (3A) in the Y-axis negative direction, the nut (83b) is first loosened, and then the nut (83c) is rotated to move the bolt (83a) in the Y-axis negative direction. After that, the worker or the work robot tightens the nuts (83b, 83c) to restrict the movement of the conveyor device (3A) in the Y-axis direction. To restrict movement, the nuts (83b, 83c) may be welded.

[0053] Additionally, the combination of operations of the bolt (83a) and the nut (83b, 83c) is not particularly limited. It is sufficient that the conveying device (3A) can be moved in the Y-axis direction, and the nut (83b, 83c) may be moved by the rotation of the nut (83b, 83c), the nut (83b, 83c) may be moved by the rotation of the bolt (83a), and the bolt (83a) may be moved by the rotation of the bolt (83a).

[0054] The second unit (83) is provided at the four corners of the conveying device (3A) when viewed from above, for example. Additionally, the number and location of the second unit (83) are not particularly limited. Furthermore, the structure of the second unit (83) is not particularly limited, and for example, a hydraulic cylinder may be used as the second unit (83).

[0055] The moving device (8A) includes a first measuring device (85) used to measure the position of the conveying device (3A) in the X-axis direction. Additionally, the moving device (8A) includes a second measuring device (86) used to measure the position of the conveying device (3A) in the Y-axis direction. The first measuring device (85) and the second measuring device (86) are, for example, laser displacement meters. The first measuring device (85) and the second measuring device (86) may be simple scales. A scale is one that has markings indicating a position. The first measuring device (85) and the second measuring device (86) are, for example, provided at the four corners of the conveying device (3A) when viewed from above. Additionally, the number and position of the first measuring device (85) are not particularly limited. The number and position of the second measuring device (86) are not particularly limited.

[0056] A worker or a work robot uses a first measuring device (85) and a second measuring device (86) to measure the position of the conveyor device (3A) in the X-axis direction and the position of the conveyor device (3A) in the Y-axis direction. By measuring these positions before and after the movement of the conveyor device (3A), the amount of movement can be managed. In addition, it is possible to return the conveyor device (3A) to its original position after the movement of the conveyor device (3A).

[0057] The moving device (8A) includes a rolling element between the conveying device (3A) and the floor Fr. As the rolling element, in this embodiment, a first roller (87a) and a second roller (88a) are used as described below, but a ball may also be used. The ball can be rolled in two dimensions. The moving device (8A) may further include a guide rail that guides the rolling element. By placing the rolling element between the conveying device (3A) and the floor Fr, friction can be reduced, allowing the conveying device (3A) to be moved easily.

[0058] For example, the moving device (8A) includes a first roller (87a) that rolls in the X-axis direction, a first holder (87b) that rotatably holds and supports the first roller (87a), and a first jack (87c) that changes the height of the conveying device (3A) relative to the first holder (87b). The rotational centerline of the first roller (87a) is in the Y-axis direction. The first roller (87a) makes contact with the floor Fr and moves. The first jack (87c) is a pantograph-type screw jack, but it may be a screw jack, hydraulic jack, or air jack of a type other than a pantograph.

[0059] When the worker or work robot moves the conveyor device (3A) in the X-axis direction, the first roller (87a) contacts the floor Fr, and the second roller (88a) and the vertical direction adjustment mechanism (89) described later both do not contact the floor Fr, so that the height of the conveyor device (3A) is adjusted in advance by the first jack (87c). After that, the worker or work robot moves the conveyor device (3A) in the X-axis direction using the first unit (82). At that time, the first roller (87a) moves while contacting the floor Fr.

[0060] Additionally, the moving device (8A) includes a second roller (88a) that rolls in the Y-axis direction, a second holder (88b) that rotatably holds and supports the second roller (88a), and a second jack (88c) that changes the height of the conveying device (3A) relative to the second holder (88b). The rotational centerline of the second roller (88a) is in the X-axis direction. The second roller (88a) moves by contacting the floor Fr. The second jack (88c) is a pantograph-type screw jack, but it may be a screw jack, hydraulic jack, or air jack of a type other than a pantograph.

[0061] When the worker or work robot moves the conveyor device (3A) in the Y-axis direction, the worker or work robot adjusts the height of the conveyor device (3A) in advance using the second jack (88c) so that the second roller (88a) contacts the floor Fr, and that both the first roller (87a) and the vertical direction adjustment mechanism (89) do not contact the floor Fr. After that, the worker or work robot moves the conveyor device (3A) in the Y-axis direction using the second unit (83). At that time, the second roller (88a) moves while contacting the floor Fr.

[0062] The moving device (8A) includes a vertical direction adjustment mechanism (89) for adjusting the position of the conveying device (3A) in the vertical direction. The vertical direction adjustment mechanism (89) may include, for example, a screw jack, but may also include a hydraulic jack or an air jack. By adjusting the position of the conveying device (3A) in the vertical direction, the misalignment between the connecting parts can be reduced after the heat rise ends and before the glass manufacturing begins.

[0063] The vertical direction adjustment mechanism (89) includes, for example, a bolt (89a) and a nut (89b, 89c) that is rotatably coupled relative to the bolt (89a). The axial direction of the bolt (89a) is the Z-axis direction. The vertical direction adjustment mechanism (89) moves the conveyor device (3A) in the Z-axis direction by the rotation of the bolt (89a) or the nut (89b, 89c).

[0064] For example, a bolt (89a) is loaded on the floor Fr of a building. A horizontal fixing piece (90) is loaded on top of a nut (89b). The fixing piece (90) is fixed to a conveying device (3A) by welding or the like. Nuts (89b, 89c) are positioned with the fixing piece (90) in between.

[0065] In this case, the worker or the work robot moves the conveyor device (3A) in the Z-axis direction by rotating the nuts (89b, 89c). To move the conveyor device (3A) in the Z-axis forward direction, the upper nut (89c) is first loosened, and then the lower nut (89b) is rotated to move the nut (89b) in the Z-axis forward direction. Meanwhile, to move the conveyor device (3A) in the Z-axis negative direction, the lower nut (89b) is rotated to move the nut (89b) in the Z-axis negative direction. After that, the worker or the work robot tightens the nut (89c) to restrict the movement of the conveyor device (3A) in the Z-axis direction. To restrict movement, the nuts (89b, 89c) may be welded.

[0066] Additionally, the combination of operations of the bolt (89a) and the nut (89b, 89c) is not particularly limited. It is sufficient that the conveying device (3A) can be moved in the Z-axis direction, and the bolt (89a) may be moved by the rotation of the nut (89b, 89c), the nut (89b, 89c) may be moved by the rotation of the bolt (89a), and the bolt (89a) may be moved by the rotation of the bolt (89a).

[0067] The vertical direction adjustment mechanism (89) is provided at the four corners of the conveyor device (3A) when viewed from above, for example. In addition, the number and location of the vertical direction adjustment mechanism (89) are not particularly limited. In addition, the structure of the vertical direction adjustment mechanism (89) is not particularly limited, and for example, a first jack (87c) or a second jack (88c) may be used as the vertical direction adjustment mechanism (89).

[0068] The moving device (8A) includes a third measuring device (91) used to measure the position of the conveying device (3A) in the Z-axis direction. The third measuring device (91) is, for example, a laser displacement meter. The third measuring device (91) may be a simple scale. The third measuring device (91) is provided at the four corners of the conveying device (3A) when viewed from above, for example. In addition, the number and position of the third measuring devices (91) are not particularly limited.

[0069] A worker or a work robot measures the position of the conveyor device (3A) in the Z-axis direction using a third measuring device (91). By measuring this position before and after the movement of the conveyor device (3A), the amount of movement can be managed. Additionally, it is possible to return the conveyor device (3A) to its original position after the movement of the conveyor device (3A).

[0070] Next, referring to FIG. 6, a moving device (8A) according to a modified example will be described. Other moving devices (8B to 8E) may also be configured in the same manner as the moving device (8A) shown in FIG. 6. In the above embodiment, both the first roller (87a) and the second roller (88a) contact the floor Fr, whereas in this modified example, only the second roller (88a) contacts the floor Fr. Additionally, only the first roller (87a) may contact the floor. Below, the differences between this modified example and the above embodiment will be described mainly.

[0071] In addition, in this modified example, the first horizontal direction is the X-axis direction and the second horizontal direction is the Y-axis direction, but the technology of the present disclosure is not limited to this. By adjusting the position of the conveying device (3A) in two different horizontal directions, a gap for preventing interference can be formed during heat rise, and also, after the heat rise ends and before the glass manufacturing begins, the misalignment between the connecting parts can be reduced.

[0072] The second unit (83) includes, for example, a bolt (83a) and nuts (83b, 83c). For example, the nuts (83b, 83c) are in contact with a fixed part (11) fixed to the floor Fr of a building and are positioned with the fixed part (11) in between. The bolt (83a) is connected to the conveying device (3A) through the Y-axis movable plate (92), the X-axis movable plate (93), and the jack (94). The axial direction of the bolt (83a) is the Y-axis direction. The bolt (83a) is fixed to the vertical part (92a) of the Y-axis movable plate (92) by welding or the like. A second holder (88b) is fixed to the lower surface of the horizontal part (92b) of the Y-axis movable plate (92). The second holder (88b) rotatably holds and supports the second roller (88a). The rotation centerline of the second roller (88a) is in the X-axis direction. The second roller (88a) contacts the floor Fr and moves.

[0073] In this case, the worker or the work robot moves the conveyor device (3A) in the Y-axis direction by rotating the nuts (83b, 83c). To move the conveyor device (3A) in the Y-axis negative direction, the nut (83b) is first loosened, and then the nut (83c) is rotated to move the bolt (83a) in the Y-axis negative direction. Meanwhile, to move the conveyor device (3A) in the Y-axis forward direction, the nut (83c) is first loosened, and then the nut (83b) is rotated to move the bolt (83a) in the Y-axis forward direction. After that, the worker or the work robot tightens the nuts (83b, 83c) to restrict the movement of the conveyor device (3A) in the Y-axis direction. To restrict movement, the nuts (83b, 83c) may be welded. In addition, the combination of operations of the bolt (83a) and nut (83b, 83c) is not particularly limited.

[0074] The first unit (82) includes, for example, a bolt (82a) and nuts (82b, 82c). For example, the bolt (82a) is fixed to the vertical portion (92c) of the Y-axis movable plate (92) by welding or the like. The axial direction of the bolt (82a) is the X-axis direction. The nuts (82b, 82c) are in contact with the vertical portion (93a) of the X-axis movable plate (93) and are positioned with the vertical portion (93a) in between. A first holder (87b) is fixed to the lower surface of the horizontal portion (93b) of the X-axis movable plate (93). The first holder (87b) rotatably holds and supports the first roller (87a). The rotation centerline of the first roller (87a) is in the Y-axis direction. The first roller (87a) contacts the upper surface of the horizontal portion (92b) of the Y-axis movable plate (92) and operates.

[0075] In this case, the worker or the work robot moves the conveyor device (3A) in the X-axis direction by rotating the nuts (82b, 82c). To move the conveyor device (3A) in the X-axis forward direction, the nut (82c) is first loosened, and then the nut (82b) is rotated to move the nut (82b) in the X-axis forward direction. Meanwhile, to move the conveyor device (3A) in the X-axis negative direction, the nut (82b) is first loosened, and then the nut (82c) is rotated to move the nut (82c) in the X-axis negative direction. After that, the worker or the work robot tightens the nuts (82b, 82c) to restrict the movement of the conveyor device (3A) in the X-axis direction. To restrict movement, the nuts (82b, 82c) may be welded. In addition, the combination of operations of the bolt (82a) and nut (82b, 82c) is not particularly limited.

[0076] The jack (94) is positioned between the X-axis movable plate (93) and the conveying device (3A) to change the height of the conveying device (3A) relative to the X-axis movable plate (93). With the vertical direction adjustment mechanism (89) removed from the floor Fr, the conveying device (3A) can be moved in the X-axis direction and the Y-axis direction. The jack (94) is a pantograph-type screw jack, but it may be a screw jack, hydraulic jack, or air jack of a type other than a pantograph.

[0077] The moving device (8A) may include a vertical direction adjustment mechanism (89). The vertical direction adjustment mechanism (89) adjusts the position of the conveying device (3A) in the vertical direction. The vertical direction adjustment mechanism (89) may include, for example, a screw jack, but may also include a hydraulic jack or an air jack. By adjusting the position of the conveying device (3A) in the vertical direction, the misalignment between the connecting parts can be reduced after the heat rise ends and before the glass manufacturing begins.

[0078] The vertical direction adjustment mechanism (89) includes, for example, a bolt (89a) and nuts (89b, 89c). The axial direction of the bolt (89a) is the Z-axis direction. For example, the bolt (89a) is loaded on the floor Fr of a building. And, a horizontal fixing piece (90) is loaded on top of the nut (89b). The fixing piece (90) is fixed to the conveying device (3A) by welding or the like. The nuts (89b, 89c) are positioned with the fixing piece (90) in between.

[0079] In this case, the worker or the work robot moves the conveyor device (3A) in the Z-axis direction by rotating the nuts (89b, 89c). To move the conveyor device (3A) in the Z-axis forward direction, the upper nut (89c) is first loosened, and then the lower nut (89b) is rotated to move the nut (89b) in the Z-axis forward direction. Meanwhile, to move the conveyor device (3A) in the Z-axis negative direction, the lower nut (89b) is rotated to move the nut (89b) in the Z-axis negative direction. After that, the worker or the work robot tightens the nut (89c) to restrict the movement of the conveyor device (3A) in the Z-axis direction. To restrict movement, the nuts (89b, 89c) may be welded. Also, the combination of the operation of the bolt (89a) and the nuts (89b, 89c) is not particularly limited. Additionally, a jack (94) may be used as a vertical direction adjustment mechanism (89).

[0080] However, in the above embodiment and the above variation, as shown in FIGS. 3 and 4, after the heat rise ends, the stirring blade (101A) of the stirring device (100A) is inserted from above into the vertical pipe (32A) of the conveying device (3A). Likewise, after the heat rise ends, the stirring blade (101B) of the stirring device (100B) is inserted from above into the vertical pipe (32D) of the conveying device (3D).

[0081] However, as illustrated in FIG. 7, the glass manufacturing apparatus (1) is equipped with a second moving device (110A) that moves the position of the stirring device (100A). Although not illustrated, the glass manufacturing apparatus (1) is also equipped with a second moving device that moves the position of the stirring device (100B). Since this second moving device is configured in the same way as the second moving device (110A), illustration and description are omitted. Below, the second moving device (110A) will be described with reference to FIG. 7, but first, the stirring device (100A) will be described.

[0082] As illustrated in FIG. 7 (A), the stirring device (100A) comprises a stirring blade (101A) for stirring molten glass G inside the vertical pipe (32A) of the conveying device (3A), a rotating shaft (102A) on which the stirring blade (101A) is installed at the bottom, a motor (103A) for rotating the rotating shaft (102A), and a stand (104A) on which the motor (103A) is placed. The rotating shaft (102A) passes through a through hole in the stand (104A) and extends downward from the stand (104A). The stirring blade (101A) is installed at the bottom thereof. Additionally, in FIG. 7 (A), the illustration of the second horizontal direction adjustment mechanism (111) of FIG. 7 (B) is omitted.

[0083] As illustrated in (B) of FIG. 7, the second moving device (110A) includes a second horizontal direction adjustment mechanism (111). The second horizontal direction adjustment mechanism (111) adjusts the position of the stirring device (100A) in both directions of the X-axis and Y-axis. After the heat rise ends and before the glass manufacturing begins, the stirring device (100A) can be moved to an appropriate position according to the movement of the vertical tube (32A) of the conveying device (3A).

[0084] The second horizontal direction adjustment mechanism (111) includes a first unit (112) that adjusts the position of the stirring device (100A) in the X-axis direction, for example. Additionally, the second horizontal direction adjustment mechanism (111) includes a second unit (113) that adjusts the position of the stirring device (100A) in the Y-axis direction. The position of the stirring device (100A) in the X-axis direction and the position of the stirring device (100A) in the Y-axis direction can be adjusted individually.

[0085] The first unit (112) includes, for example, a bolt (112a) and a nut (112b) that is rotatably coupled relative to the bolt (112a). The axial direction of the bolt (112a) is the X-axis direction. The first unit (112) moves the stirring device (100A) in the X-axis direction by the rotation of the bolt (112a) or the nut (112b).

[0086] For example, the nut (112b) is fixed to an L-shaped angle (122) fixed to the upper surface of the base plate (121). The nut (112b) is provided separately from the L-shaped angle (122), but may also be provided as part of the L-shaped angle (122). And, the tip of the bolt (112a) is pressed in contact with the frame (104A) of the stirring device (100A). The frame (104A) is movably loaded on the upper surface of the base plate (121).

[0087] In this case, when a worker or a work robot rotates the bolt (112a), the bolt (112a) moves in the X-axis direction, and as a result, the stirring device (100A) moves in the X-axis direction. The X-axis position of the stirring device (100A) can be managed by the amount of rotation of the bolt (112a).

[0088] Additionally, the combination of operations of the bolt (112a) and the nut (112b) is not particularly limited. It is sufficient that the stirring device (100A) can be moved in the X-axis direction, and the nut (112b) may be moved by the rotation of the bolt (112a), the bolt (112a) may be moved by the rotation of the nut (112b), and the nut (112b) may be moved by the rotation of the nut (112b).

[0089] The first unit (112) is provided at the four corners of the base (104A) of the stirring device (100A) when viewed from above, for example. In addition, the number and location of the first unit (112) are not particularly limited. Furthermore, the structure of the first unit (112) is not particularly limited, and for example, a hydraulic cylinder may be used as the first unit (112).

[0090] The second unit (113) includes, for example, a bolt (113a) and a nut (113b) that is rotatably coupled relative to the bolt (113a). The axial direction of the bolt (113a) is the Y-axis direction. The second unit (113) moves the stirring device (100A) in the Y-axis direction by the rotation of the bolt (113a) or the nut (113b).

[0091] For example, the nut (113b) is fixed to an L-shaped angle (122) fixed to the upper surface of the base plate (121). The nut (113b) is provided separately from the L-shaped angle (122), but may also be provided as part of the L-shaped angle (122). And, the tip of the bolt (113a) is pressed in contact with the frame (104A) of the stirring device (100A).

[0092] In this case, when a worker or a work robot rotates the bolt (113a), the bolt (113a) moves in the Y-axis direction, and as a result, the stirring device (100A) moves in the Y-axis direction. The Y-axis position of the stirring device (100A) can be managed by the amount of rotation of the bolt (113a).

[0093] Additionally, the combination of operations of the bolt (113a) and the nut (113b) is not particularly limited. It is sufficient that the stirring device (100A) can be moved in the Y-axis direction, and the nut (113b) may be moved by the rotation of the bolt (113a), the bolt (113a) may be moved by the rotation of the nut (113b), and the nut (113b) may be moved by the rotation of the nut (113b).

[0094] The second unit (113) is provided at the four corners of the base (104A) of the stirring device (100A) when viewed from above, for example. Additionally, the number and location of the second unit (113) are not particularly limited. Furthermore, the structure of the second unit (113) is not particularly limited, and for example, a hydraulic cylinder may be used as the second unit (113).

[0095] The second moving device (110A) includes a measuring instrument (131) used to measure the position of the stirring device (100A) in the X-axis direction. Additionally, the second moving device (110A) includes a measuring instrument (132) used to measure the position of the stirring device (100A) in the Y-axis direction. The measuring instruments (131, 132) are, for example, laser displacement meters. The measuring instruments (131, 132) may be simple scales.

[0096] As illustrated in FIG. 7 (A), the second moving device (110A) may include a second vertical direction adjustment mechanism (118). The second vertical direction adjustment mechanism (118) adjusts the position of the stirring device (100A) in the vertical direction. After the heat rise ends and before the glass manufacturing begins, the stirring device (100A) can be moved to an appropriate position according to the movement of the vertical pipe (32A) of the conveying device (3A).

[0097] The second vertical direction adjustment mechanism (118) includes, for example, a bolt (118a) and a nut (118b). The axial direction of the bolt (118a) is the Z-axis direction. For example, the lower end of the bolt (118a) is fixed to the base plate (121). And, the nut (118b) is fixed to the first bevel gear (118c). The first bevel gear (118c) is engaged with the second bevel gear (118d). The rotational centerline of the first bevel gear (118c) is in the Z-axis direction, and the rotational centerline of the second bevel gear (118d) is in the X-axis direction. Additionally, the rotational centerline of the second bevel gear (118d) may be in the Y-axis direction. The first bevel gear (118c) and the second bevel gear (118d) rotate their rotational centerlines by 90°. The second bevel gear (118d) rotates together with the sprocket (118e). The sprocket (118e) is rotatably supported on a rotating shaft fixed to the building. And, an endless chain (118f) is wrapped around the sprocket (118e).

[0098] In this case, when a worker or a work robot pulls down the chain (118f), the sprocket (118e) rotates, causing the second bevel gear (118d), the first bevel gear (118c), and the nut (118b) to rotate, and the bolt (118a) moves in the Z-axis direction, and as a result, the stirring device (100A) moves in the Z-axis direction. The Z-axis position of the stirring device (100A) can be controlled by the amount of rotation of the nut (118b). Furthermore, the combination of the operation of the bolt (118a) and the nut (118b) is not particularly limited. Additionally, a jack may be used as the second vertical direction adjustment mechanism (118).

[0099] The second moving device (110A) includes a measuring instrument (133) used to measure the position of the stirring device (100A) in the Z-axis direction. The measuring instrument (133) is, for example, a laser displacement meter. The measuring instrument (133) may be a simple scale.

[0100] Although a glass manufacturing apparatus and a glass manufacturing method according to the present disclosure have been described above, the present disclosure is not limited to the above embodiments. Within the scope described in the claims, various changes, modifications, substitutions, additions, deletions, and combinations are possible. These also naturally fall within the technical scope of the present disclosure. Explanation of the symbols

[0101] 1: Glass manufacturing device 2: Dissolution device 3: Return device 4: Forming device 8A to 8E: Moving devices 81: Horizontal direction adjustment mechanism G: Molten glass

Claims

Claim 1 A glass manufacturing apparatus comprising: a melting device for melting glass raw materials to produce molten glass; a molding device for molding the molten glass produced by the melting device; a conveying device positioned between the melting device and the molding device for conveying the molten glass; and a moving device for moving the position of the conveying device, wherein the moving device includes a horizontal direction adjustment mechanism for adjusting and limiting the position of the conveying device in both directions of a first horizontal direction and a second horizontal direction different from the first horizontal direction, and wherein the moving device moves the position of the conveying device independently of the melting device and the molding device. Claim 2 A glass manufacturing apparatus according to claim 1, wherein the horizontal direction adjustment mechanism comprises a first unit for adjusting and limiting the position of the conveying device in the first horizontal direction and a second unit for adjusting and limiting the position of the conveying device in the second horizontal direction. Claim 3 A glass manufacturing apparatus according to paragraph 2, wherein the first unit comprises a bolt and a nut rotatably coupled relative to the bolt, and moves the conveying device in the first horizontal direction by the rotation of the bolt or the nut. Claim 4 A glass manufacturing device according to paragraph 3, wherein the first unit comprises two nuts and restricts the movement of the conveying device in the first horizontal direction with the two nuts. Claim 5 A glass manufacturing device according to claim 4, wherein the two nuts are welded to limit the movement of the conveying device in the first horizontal direction. Claim 6 A glass manufacturing apparatus according to any one of claims 1 to 5, wherein the moving device comprises a first measuring device used for measuring the position of the conveying device in the first horizontal direction and a second measuring device used for measuring the position of the conveying device in the second horizontal direction. Claim 7 A glass manufacturing apparatus according to any one of claims 1 to 5, wherein the moving device comprises a moving element between the conveying device and the floor. Claim 8 A glass manufacturing apparatus according to any one of claims 1 to 5, wherein the moving device comprises a vertical direction adjustment mechanism for adjusting the position of the conveying device in the vertical direction. Claim 9 In claim 8, the above vertical direction adjustment mechanism is a glass manufacturing device including a jack. Claim 10 A glass manufacturing apparatus according to any one of claims 1 to 5, wherein the conveying device comprises a conduit for sending the molten glass. Claim 11 In item 10, the above conduit comprises a vertical tube open upward, a glass manufacturing apparatus. Claim 12 A glass manufacturing apparatus according to claim 11, comprising a stirring device for stirring the molten glass inside the vertical tube. Claim 13 A glass manufacturing apparatus according to claim 12, comprising a second moving device for moving the position of the stirring device, wherein the second moving device comprises a second horizontal direction adjusting mechanism for adjusting the position of the stirring device in both directions of the first horizontal direction and the second horizontal direction. Claim 14 A glass manufacturing apparatus according to claim 13, wherein the second moving device comprises a second vertical direction adjusting mechanism for adjusting the position of the stirring device in the vertical direction. Claim 15 A glass manufacturing apparatus according to claim 11, comprising a clarification device located between the melting device and the molding device and clarifying the molten glass, wherein the clarification device comprises a vacuum degassing tank for vacuum degassing the molten glass, a rising pipe for raising the molten glass to the vacuum degassing tank, and a descending pipe for lowering the molten glass from the vacuum degassing tank, wherein the rising pipe or the descending pipe is inserted into the vertical pipe. Claim 16 A glass manufacturing apparatus according to any one of claims 1 to 5, wherein the molding apparatus comprises a float bath for receiving molten metal, and the conveying apparatus comprises a lip for supplying molten glass over the molten metal received in the float bath. Claim 17 A method for manufacturing glass using a glass manufacturing apparatus described in any one of claims 1 to 5, comprising adjusting and limiting the position of the conveying device in both directions of the first horizontal direction and the second horizontal direction by means of the horizontal direction adjustment mechanism.

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