Liquid crystal glass thickness difference regulating device

Abstract

The invention discloses a liquid crystal glass thickness difference regulation and control device, and relates to the technical field of liquid crystal glass manufacturing. The liquid crystal glass thickness difference adjusting and controlling device comprises a long-strip-shaped furnace wall connecting plate, a supporting device is arranged on the outer side of the furnace wall connecting plate, an adjusting and controlling box is arranged on the inner side of the furnace wall connecting plate, and a plurality of air pipes evenly distributed in the length direction of the furnace wall connecting plate are arranged on the supporting device. The air outlet end of the air pipe penetrates through the furnace wall connecting plate, then extends into an inner cavity of the regulation and control box and is adjacent to the front wall of the regulation and control box, and the front wall of the regulation and control box is a heat radiation wall. The liquid crystal glass thickness difference regulation and control device provided by the embodiment of the invention is used for being mounted on the furnace body of the shaping furnace so as to control the thickness of the liquid crystal glass in the furnace body of the shaping furnace, so that the thickness deviation of the liquid crystal glass is prevented from exceeding the range, and the product quality is stabilized.

Description

Technical Field

[0001] The present application relates to the technical field of liquid crystal glass manufacturing, and in particular to a device for controlling the thickness difference of liquid crystal glass. Background Art

[0002] As a key material for liquid crystal display devices, liquid crystal glass substrates have become a bottleneck affecting the development of the liquid crystal industry due to their high process control requirements. When using the melt overflow method to produce glass substrates, it is necessary to ensure that the glass thickness deviation is less than 0.012mm. During the overflow draw-down molding process of liquid crystal glass, especially when the molding equipment is running at the end of its life, due to the sinking of overflow bricks and the significant reduction of glass materials at the manifold, the thickness difference of liquid crystal glass is easily in an uncontrolled state, causing the thickness deviation of liquid crystal glass to exceed the range, seriously affecting product quality. Summary of the invention

[0003] The purpose of the present application is to provide a liquid crystal glass thickness difference control device to solve the problem of liquid crystal glass thickness deviation exceeding the range.

[0004] The technical solution adopted by the present application to solve its technical problems is: a liquid crystal glass thickness difference control device, including a long strip of furnace wall connecting plate, a supporting device is arranged on the outer side of the furnace wall connecting plate, a control box is arranged on the inner side of the furnace wall connecting plate, and a plurality of air ducts evenly distributed along the length direction of the furnace wall connecting plate are arranged on the supporting device, and the air outlet end of the air duct passes through the furnace wall connecting plate and extends into the inner cavity of the control box and is adjacent to the front wall of the control box, and the front wall of the control box is a heat radiation wall.

[0005] Furthermore, the air duct is slidably connected to the supporting device, the furnace wall connecting plate and the regulating box respectively along its axial direction, and an air duct locking device is provided between the air duct and the supporting device.

[0006] Furthermore, the air duct locking device includes an air duct locking block and an air duct locking screw. The air duct locking block is sleeved on the air duct and connected to the supporting device. The air duct locking screw is threadedly connected to the air duct locking block, and its end is used to abut against the air duct.

[0007] Furthermore, the control box is connected to the supporting device via a control box adjustment component, and the control box adjustment component is used to adjust the distance between the control box and the furnace wall connecting plate.

[0008] Furthermore, the regulating box adjustment assembly includes at least two regulating box adjustment screws, one end of the regulating box adjustment screws is connected to the regulating box, the other end of the regulating box adjustment screws passes through the furnace wall connecting plate and the supporting device, the regulating box adjustment screws are slidingly connected to the furnace wall connecting plate and the supporting device along their axial direction, and two regulating box locking nuts for clamping the supporting device are threadedly connected to the regulating box adjustment screws.

[0009] Furthermore, a gate plate located on one side of the control box is provided on the inner side of the furnace wall connecting plate, the gate plate is perpendicular to the furnace wall connecting plate and extends along the length direction of the furnace wall connecting plate, the gate plate is connected to the supporting device through a gate plate adjustment assembly, and the gate plate adjustment assembly is used to adjust the distance between the gate plate and the furnace wall connecting plate.

[0010] Furthermore, the gate adjustment assembly includes at least two gate adjustment screws, one end of the gate adjustment screw is connected to the gate, the other end of the gate adjustment screw passes through the furnace wall connecting plate and the supporting device, the gate adjustment screw is slidingly connected to the furnace wall connecting plate and the supporting device along its axial direction, and two gate locking nuts for clamping the supporting device are threadedly connected to the gate adjustment screw.

[0011] Furthermore, an electric heating device is provided in each of the air ducts.

[0012] Furthermore, an air balancing box is provided on the supporting device, and an air inlet connected to its inner cavity is provided on the air balancing box, and the air inlet end of each air duct is connected to the inner cavity of the air balancing box through a flow meter.

[0013] Furthermore, at least two zone control devices are arranged on the furnace wall connecting plate at intervals along its length direction, and the zone control device includes a heat dissipation pipe and a regulating valve arranged on the heat dissipation pipe, the heat dissipation pipe is arranged on the outer side of the furnace wall connecting plate, and one end thereof is connected to the furnace wall connecting plate, and a heat dissipation hole is arranged on the furnace wall connecting plate at a position opposite to the inner cavity of the heat dissipation pipe.

[0014] Beneficial effects of this application:

[0015] The liquid crystal glass thickness difference control device provided in the embodiment of the present application is used to be installed on the furnace body of a shaping furnace to control the thickness of the liquid crystal glass in the furnace body of the shaping furnace, thereby preventing the thickness deviation of the liquid crystal glass from exceeding the range and stabilizing the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a front view of a liquid crystal glass thickness difference control device provided in an embodiment of the present application;

[0018] Figure 2 It is a left view of the liquid crystal glass thickness difference control device provided in an embodiment of the present application;

[0019] Figure 3 is a top view of a liquid crystal glass thickness difference control device provided in an embodiment of the present application;

[0020] Figure 4 yes Figure 1 Sectional view along line AA;

[0021] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0022] Figure 6 yes Figure 4 Enlarged view of point B in the middle;

[0023] Figure 7 yes Figure 2 Sectional view along line BB;

[0024] Figure 8 yes Figure 7 Sectional view along line CC;

[0025] Fig. 9 It is a structural schematic diagram of an electric heating device provided in an air duct;

[0026] Fig.10 It is a structural schematic diagram of installing the liquid crystal glass thickness difference control device provided in the embodiment of the present application onto the furnace body of a shaping furnace.

[0027] Reference numerals:

[0028] 1-molding furnace body; 2-liquid crystal glass;

[0029] 10-furnace wall connecting plate; 101-heat dissipation hole; 102-connecting plate insulation layer;

[0030] 11-support device; 111-first support tube; 112-support plate; 113-second support tube; 114-fixing screw; 115-fixing nut;

[0031] 12-control box; 121-heat radiation wall; 122-rear wall; 123-upper wall; 124-lower wall; 125-end wall;

[0032] 13- Air duct;

[0033] 14-air duct locking device; 141-air duct locking block; 142-air duct locking screw;

[0034] 15-regulating box adjusting assembly; 151-regulating box adjusting screw; 152-regulating box locking nut;

[0035] 16-gate;

[0036] 17-gate adjustment assembly; 171-gate adjustment screw; 172-gate locking nut;

[0037] 18-Electric heating device;

[0038] 19- air balancing box; 191- flow meter installation steel structure;

[0039] 20-flow meter; 201-hose;

[0040] 21-region control device; 211-heat dissipation pipe; 212-regulating valve. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0042] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the embodiments and features in the embodiments of this application can be combined with each other without conflict.

[0043] In the description of the embodiments of the present application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or is the orientation or positional relationship in which the product of the application is usually placed when in use, or is the orientation or positional relationship commonly understood by those skilled in the art. The terms "disposed", "opened", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, and an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements.

[0044] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 A liquid crystal glass thickness difference control device provided in an embodiment of the present application includes a long furnace wall connecting plate 10, a supporting device 11 is arranged on the outer side of the furnace wall connecting plate 10, a control box 12 is arranged on the inner side of the furnace wall connecting plate 10, and a plurality of air ducts 13 evenly distributed along the length direction of the furnace wall connecting plate 10 are arranged on the supporting device 11. The air outlet end of the air duct 13 passes through the furnace wall connecting plate 10 and extends into the inner cavity of the control box 12 and is adjacent to the front wall of the control box 12. The front wall of the control box 12 is a heat radiation wall 121.

[0045] See also Figure 1 , Figure 2 , Figure 3 In the figure, the X direction, Y direction and Z direction are three mutually perpendicular directions, wherein the X direction and the Y direction are two horizontal directions, and the Z direction is a vertical direction. The furnace wall connecting plate 10 is a rectangular steel plate, which is used to be installed on the outer wall of the furnace body 1 of the shaping furnace through fasteners such as bolts. Among them, the length direction, width direction and thickness direction of the furnace wall connecting plate 10 are parallel to the X direction, the Z direction and the Y direction respectively. The supporting device 11 is installed on the outer side of the furnace wall connecting plate 10, and the regulating box 12 is installed on the inner side of the furnace wall connecting plate 10. When the furnace wall connecting plate 10 is installed on the outer wall of the furnace body 1 of the shaping furnace, the supporting device 11 is located outside the furnace body 1 of the shaping furnace, and the regulating box 12 is located inside the furnace body 1 of the shaping furnace. The regulating box 12 is a hollow rectangular parallelepiped structure, and the length direction of the regulating box 12 is parallel to the X direction. In the direction along the Y direction, the regulating box 12 has a front wall away from the furnace wall connecting plate 10, and the front wall is a heat radiation wall 121 for radiating heat outward. The heat radiation wall 121 can be made of a silicon carbon plate or other existing heat radiation materials. Figures 1 to 4 , a plurality of air ducts 13 are evenly distributed and installed on the supporting device 11 along the X direction, each air duct 13 is parallel to the Y direction, and the two ends of the air duct 13 are respectively an air inlet end and an air outlet end, and the air inlet end of the air duct 13 is located on the outside of the furnace wall connecting plate 10, and the air outlet end of the air duct 13 passes through the furnace wall connecting plate 10 and extends to the inner cavity of the control box 12 and is adjacent to the heat radiation wall 121 of the control box 12. Therefore, compressed air of different temperatures can be transported into the air duct 13 through the air inlet end of the air duct 13 to purge the points of the heat radiation wall 121 corresponding to the air outlet end of the air duct, thereby adjusting the temperature radiated outward from each point of the heat radiation wall 121, and realizing the adjustment of the thickness of the corresponding points of the liquid crystal glass 2. Exemplarily, 56 air ducts 13 are evenly distributed along the X direction, the outer diameter of each air duct 13 is 10 mm, the distance between the center lines of two adjacent air ducts 13 is 25 mm, and the distance between the air outlet end of the air duct 13 and the heat radiation wall 121 is approximately 20±5 mm.

[0046] The liquid crystal glass thickness difference control device provided in the embodiment of the present application is used to be installed on the furnace body 1 of the shaping furnace to control the thickness of the liquid crystal glass 2 in the furnace body 1 of the shaping furnace. Fig.10 The two sets of liquid crystal glass thickness difference control devices are installed on the same horizontal plane and are arranged on both sides of the furnace body 1 of the shaping furnace. Specifically, the furnace wall connecting plates 10 of the two sets of liquid crystal glass thickness difference control devices are connected to the outer walls of both sides of the furnace body 1 of the shaping furnace through bolts and other fasteners, respectively. The control boxes 12 of the two sets of liquid crystal glass thickness difference control devices are located in the inner cavity of the furnace body 1 of the shaping furnace, and a passage for the liquid crystal glass 2 to pass through is formed between the two control boxes 12. The two sets of liquid crystal glass thickness difference control devices are staggered in the X direction so that each air duct 13 is directly opposite to the center position between two adjacent air ducts 13 opposite to each other.

[0047] During the entire production process of the TFT-LCD liquid crystal glass 2, after being formed by overflow bricks, the liquid crystal glass 2 enters the shaping furnace body 1 under the clamping guidance of the edge drawing machine and the pulling roller for shaping and curing. During the process of the liquid crystal glass 2 passing through the shaping furnace body 1, the process personnel adjust the thickness difference of the liquid crystal glass 2 by means of the thickness curve parameters fed back by the product thickness measuring equipment and relying on two sets of liquid crystal glass thickness difference control devices distributed on both sides of the liquid crystal glass 2. The specific control process is as follows: when the thickness of the liquid crystal glass 2 at point A meets the deviation range, the air duct 13 corresponding to point A is not used; when the thickness of the liquid crystal glass 2 at point B is less than the minimum thickness, it indicates that the thickness of the liquid crystal glass 2 at point B is relatively thin, and compressed air with a lower temperature is transported into the air duct 13 corresponding to point B, and the compressed air with a lower temperature blows and cools the heat radiation wall 121 corresponding to the air duct 13, so as to reduce the temperature of point B radiated by the heat radiation wall 121 to the liquid crystal glass, thereby increasing the thickness of the liquid crystal glass 2 at point B; when the thickness of the liquid crystal glass 2 at point C is greater than the maximum thickness, it indicates that the thickness of the liquid crystal glass 2 at point C is relatively thick, and compressed air with a higher temperature is transported into the air duct 13 corresponding to point C, and the compressed air with a higher temperature blows and heats the heat radiation wall 121 corresponding to the air duct 13, so as to increase the temperature of point B radiated by the heat radiation wall 121 to the liquid crystal glass, thereby reducing the thickness of the liquid crystal glass 2 at point B.

[0048] Therefore, the liquid crystal glass thickness difference control device provided in the embodiment of the present application can realize the individual fine-tuning of the local points of the thickness of the liquid crystal glass 2, and finally achieve the purpose of controlling the thickness control of each point of the liquid crystal glass 2, thereby improving the control ability of the thickness difference of the liquid crystal glass 2, ensuring the consistency of the thickness of the liquid crystal glass 2, and improving the product quality and qualified rate.

[0049] In some embodiments, see Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7, a connecting plate heat insulation layer 102 is arranged on the inner surface of the furnace wall connecting plate 10. Exemplarily, the connecting plate heat insulation layer 102 includes a corundum heat insulation board, a heat preservation heat insulation board and a heat-resistant stainless steel pressing plate stacked in sequence on the inner surface of the furnace wall connecting plate 10. Among them, the heat insulation layer 102 is connected to the furnace wall connecting plate 10 by screws. After the furnace wall connecting plate 10 is installed on the outer wall of the furnace body 1 of the shaping furnace, the heat insulation layer 102 arranged on the inner surface of the furnace wall connecting plate 10 can reduce the heat dissipation in the furnace body 1 of the shaping furnace through the furnace wall connecting plate 10, thereby reducing the heat loss in the furnace body 1 of the shaping furnace.

[0050] In some embodiments, see Figure 7 The support device 11 includes a first support tube 111, a support plate 112, a second support tube 113, a fixed screw 114 and a fixed nut 115. The first support tube 111, the support plate 112 and the second support tube 113 are all long strip structures extending along the X direction. The first support tube 111, the support plate 112 and the second support tube 113 are arranged in turn along the Y direction. Two fixed screws 114 are arranged in turn along the X direction. Each fixed screw 114 passes through the first support tube 111, the support plate 112 and the second support tube 113 in turn and is tightened by the fixed nut 115, so as to form a support frame as the installation basis of other parts, wherein one end of the fixed screw 114 is fixedly connected to the outer surface of the furnace wall connecting plate 10. The first support tube 111 and the second support tube 113 can be rectangular tubes or round tubes.

[0051] In some embodiments, see Figure 2 , Figure 4 , Figure 7 , Figure 8The control box 12 is mainly composed of a front wall, a rear wall 122, an upper wall 123, a lower wall 124 and two end walls 125. The front wall, the rear wall 122, the upper wall 123 and the lower wall 124 are all long strip structures extending along the X direction. Among them, the front wall is a heat radiation wall 121, and the cross-section of the heat radiation wall 121 is roughly C-shaped. The rear wall 122 is an insulating wall, which mainly includes a steel structure welded by stainless steel materials and an insulation board with a thickness of 20mm and 1800℃ high temperature resistance arranged on the steel structure. The welding parts of the steel structure are cut and processed with multiple 2mm notches to prevent the steel structure from being severely deformed after being heated and extruded under high temperature conditions, and to avoid displacement of other parts installed with the steel structure as a carrier. The upper wall 123 is an insulating wall, which mainly includes an upper support plate and an insulation board with a thickness of 20mm and 1800℃ high temperature resistance installed on the upper support plate. The lower wall 124 is a heat-insulating wall, which mainly includes a lower support plate and a heat-insulating board with a thickness of 20 mm and a high temperature resistance of 1800°C installed on the lower support plate. The end wall 125 is a heat-insulating wall, which mainly includes a frame welded from a stainless steel plate. The thickness of the frame is 20 mm. The side of the frame facing the inner cavity of the control box 12 is an open structure. The side of the frame away from the inner cavity of the control box 12 is processed with 53 circular holes with a diameter of 10 mm to prevent the frame from deforming under high temperature conditions. The heat-insulating board with a thickness of 20 mm and a high temperature resistance of 1800°C is installed in the frame. In this embodiment, the control box 12 has a breathable structure connected to its inner cavity. Therefore, when compressed air is transported into the control box 12 through the air duct 13, the air in the control box 12 can flow naturally into the furnace body 1 of the shaping furnace through the breathable structure. The breathable structure can be a breathable seam or a breathable hole. Exemplarily, when the control box 12 is manufactured, at least one seam between the front wall, the rear wall 122, the upper wall 123, the lower wall 124 and the two end walls 125 is a non-sealed structure, and the seam of the non-sealed structure forms a breathable seam.

[0052] In some embodiments, see Figure 2 , Figure 4 , Figure 5 , the air duct 13 is slidably connected with the support device 11, the furnace wall connecting plate 10 and the control box 12 along its axial direction, and an air duct locking device 14 is arranged between the air duct 13 and the support device 11. Specifically, the first support tube 111, the support plate 112, the second support tube 113 of the support device 11, the furnace wall connecting plate 10 and the connecting plate insulation layer 102, and the rear wall 122 of the control box 12 are all provided with through holes for the air duct 13 to pass through, and the air duct 13 passes through the above-mentioned through holes and can move along its axial direction. In this way, the distance between the air outlet end of the air duct 13 and the heat radiation wall 121 can be adjusted, and then the area of ​​the heat radiation wall 121 swept by the compressed air in the air duct 13 can be controlled, so as to achieve the purpose of controlling the area size of each point on the liquid crystal glass 2. When the distance between the air outlet end of the air duct 13 and the heat radiation wall 121 is adjusted, the air duct 13 can be locked by the air duct locking device 14.

[0053] For example, see Figure 5 The air duct locking device 14 includes an air duct locking block 141 and an air duct locking screw 142. The air duct locking block 141 is sleeved on the air duct 13 and connected to the supporting device 11. The air duct locking screw 142 is threadedly connected to the air duct locking block 141, and its end is used to abut against the air duct 13. During operation, the air duct locking screw 142 is loosened to separate the end of the air duct locking screw 142 from the air duct 13, and then the air duct 13 can be controlled to move along its axial direction to adjust the distance between the air outlet end of the air duct 13 and the heat radiation wall 121. When the distance is adjusted, the air duct locking screw 142 is tightened. When the end of the air duct locking screw 142 abuts against the air duct 13, the air duct 13 is locked.

[0054] In some embodiments, see Figure 2 , Figure 7 The control box 12 is connected to the support device 11 through the control box adjustment assembly 15. The control box adjustment assembly 15 is used to adjust the distance between the control box 12 and the furnace wall connecting plate 10, so as to adjust the depth of the control box 12 inserted into the furnace body 1 of the shaping furnace. Exemplarily, the control box adjustment assembly 15 includes at least two control box adjustment screws 151, one end of the control box adjustment screw 151 is connected to the control box 12, and the other end of the control box adjustment screw 151 passes through the furnace wall connecting plate 10 and the support device 11. The control box adjustment screw 151 is slidably connected to the furnace wall connecting plate 10 and the support device 11 along its axial direction, and two control box locking nuts 152 for clamping the support device 11 are threadedly connected to the control box adjustment screw 151. Specifically, the first support tube 111, the support plate 112, the second support tube 113 of the support device 11, the furnace wall connecting plate 10 and the connecting plate insulation layer 102 are all provided with through holes for the regulating box adjusting screw 151 to pass through, and the regulating box adjusting screw 151 passes through the above-mentioned through holes and can move along the axial direction thereof. During operation, the two regulating box locking nuts 152 are first controlled to move away from each other so that the regulating box adjusting screw 151 has a moving space, and then the regulating box adjusting screw 151 is controlled to move along its axial direction to adjust the distance between the regulating box 12 and the furnace wall connecting plate 10. When the distance is adjusted, the two regulating box locking nuts 152 are controlled to move closer to each other and clamp the support device 11.

[0055] In some embodiments, see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7A gate plate 16 located on one side of the control box 12 is arranged on the inner side of the furnace wall connecting plate 10. The gate plate 16 is perpendicular to the furnace wall connecting plate 10 and extends along the length direction of the furnace wall connecting plate 10. The gate plate 16 is connected to the supporting device 11 through a gate plate adjustment component 17. The gate plate adjustment component 17 is used to adjust the distance between the gate plate 16 and the furnace wall connecting plate 10. Specifically, the gate plate 16 includes an outer frame welded with heat-resistant stainless steel, and a heat-insulating surface filled in the outer frame. Among them, a 2mm wide anti-deformation notch is cut and processed on the outer frame. The gate plate adjustment component 17 can adjust the depth of the gate plate 16 inserted into the furnace body 1 of the shaping furnace to control the pressure difference in the furnace body 1 of the shaping furnace, and finally form a step temperature difference in the furnace body 1 of the shaping furnace, which plays a role in assisting in controlling the stress of the liquid crystal glass 2.

[0056] For example, see Figure 6 , Figure 7 The gate adjustment assembly 17 includes at least two gate adjustment screws 171, one end of which is connected to the gate 16, and the other end of which passes through the furnace wall connection plate 10 and the support device 11. The gate adjustment screws 171 are respectively slidably connected to the furnace wall connection plate 10 and the support device 11 along their axial direction, and two gate locking nuts 172 for clamping the support device 11 are threadedly connected to the gate adjustment screws 171. Specifically, through holes for the gate adjustment screws 171 to pass through are provided on the support plate 112 and the second support tube 113 of the support device 11, and on the furnace wall connection plate 10 and the connection plate insulation layer 102. The gate adjustment screws 171 pass through the above-mentioned through holes and can move along their axial direction. During operation, first control the two gate locking nuts 172 to move away from each other so that the gate adjusting screw 171 has space to move, and then control the gate adjusting screw 171 to move along its axial direction to adjust the depth of the gate 16 inserted into the shaping furnace body 1. When the depth is adjusted, control the two gate locking nuts 172 to move closer to each other and clamp the supporting device 11.

[0057] In some embodiments, the air duct 13 is made of sintered corundum material to ensure that it does not bend or deform under high temperature conditions. Fig. 9 , an electric heating device 18 is provided in each air duct 13. The electric heating device 18 is provided to heat the compressed air in the air duct 13. Therefore, only cold air needs to be provided as the air source. When it is necessary to transport compressed air with a higher temperature, it is only necessary to start the electric heating device 18 to heat the compressed air in the air duct 13. Exemplarily, the electric heating device 18 includes an inner sleeve installed in the air duct 13 and a platinum heating wire wound on the inner sleeve.

[0058] In some embodiments, see Figure 2 , Figure 3 , Figure 4 , Figure 5, an air balancing box 19 is provided on the support device 11, and an air inlet connected to its inner cavity is provided on the air balancing box 19, and the air inlet end of each air duct 13 is connected to the inner cavity of the air balancing box 19 through a flow meter 20. Specifically, the air balancing box 19 is made of a steel pipe with closed ends, and the air balancing box 19 is fixedly connected to the first support tube 111 of the support device 11, and a flow meter installation steel structure 191 is fixed on the air balancing box 19, and the flow meter installation steel structure 191 is made of a stainless steel plate that is bent and welded. The flow meter 20 is installed on the flow meter installation steel structure 191, and the inlet end of the flow meter 20 is connected to the inner cavity of the air balancing box 19 through a hose 201, and the outlet end of the flow meter 20 is connected to the air inlet end of the air duct 13 through another hose 201. During operation, the purified compressed air with a lower temperature enters the inner cavity of the wind box 19 from the air inlet after external pressure stabilization and filtration, and is then evenly distributed to each flow meter 20. The flow rate of the purified compressed air is controlled by the flow meter 20 and then distributed to the corresponding air ducts 13, and finally the heat radiation wall 121 is blown to achieve the purpose of adjusting the thickness of the liquid crystal glass 2 at the corresponding point.

[0059] In some embodiments, see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 At least two regional control devices 21 are arranged on the furnace wall connecting plate 10 at intervals along its length direction. The regional control device 21 includes a heat dissipation pipe 211 and a regulating valve 212 arranged on the heat dissipation pipe 211. The heat dissipation pipe 211 is arranged on the outside of the furnace wall connecting plate 10, and one end thereof is connected to the furnace wall connecting plate 10. A heat dissipation hole 101 is arranged on the furnace wall connecting plate 10 at a position facing the inner cavity of the heat dissipation pipe 211. Specifically, one end of the heat dissipation pipe 211 is connected to the outer surface of the furnace wall connecting plate 10 through a flange bolt structure. The size of the heat dissipation hole 101 is consistent with the inner diameter of the heat dissipation pipe 211. The regulating valve 212 is used to control the opening and closing of the heat dissipation pipe 211. The regulating valve 212 can adopt an existing standard valve with a ball valve seam, or a non-standard valve, as long as it can control the opening and closing of the heat dissipation pipe 211. During operation, the regulating valve 212 can be controlled to open the heat dissipation pipe 211, so that the heat in the furnace body 1 of the shaping furnace is dissipated through the heat dissipation holes 101 and the heat dissipation pipe 211, so as to achieve the purpose of fine-tuning the temperature of the local area in the furnace body 1 of the shaping furnace, and finally achieve the purpose of controlling the thickness of the liquid crystal glass 2 in the corresponding local area. Exemplarily, five regional control devices 21 are arranged on the furnace wall connecting plate 10 at intervals in the X direction.

[0060] When the liquid crystal glass thickness difference control device of the above-mentioned embodiment is used to control the thickness of the liquid crystal glass 2, the thickness of the local area of ​​the liquid crystal glass 2 can be controlled by the regional control device 21 first, and then the thickness of individual points of the liquid crystal glass 2 can be controlled by delivering compressed air into the air duct 13, so as to finally achieve the purpose of controlling the thickness of each point of the liquid crystal glass 2 and ensure the consistency of product thickness.

[0061] The above is only a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Based on the technical essence of the present application and within the spirit and principles of the present application, any simple modification, equivalent replacement and improvement of the above embodiments shall still fall within the protection scope of the technical solution of the present application.

Claims

1. A device for controlling the thickness difference of liquid crystal glass, characterized in that: The invention comprises a long strip furnace wall connecting plate (10), a supporting device (11) is arranged on the outer side of the furnace wall connecting plate (10), a regulating box (12) is arranged on the inner side of the furnace wall connecting plate (10), a plurality of air ducts (13) evenly distributed along the length direction of the furnace wall connecting plate (10) are arranged on the supporting device (11), the air outlet end of the air duct (13) passes through the furnace wall connecting plate (10) and then extends into the inner cavity of the regulating box (12) and is adjacent to the front wall of the regulating box (12), and the front wall of the regulating box (12) is a heat radiation wall (121).

2. The device for controlling the thickness difference of liquid crystal glass according to claim 1, characterized in that: The air duct (13) is slidably connected to the supporting device (11), the furnace wall connecting plate (10) and the control box (12) along its axial direction, and an air duct locking device (14) is provided between the air duct (13) and the supporting device (11).

3. The device for controlling the thickness difference of liquid crystal glass according to claim 2, characterized in that: The air duct locking device (14) comprises an air duct locking block (141) and an air duct locking screw (142); the air duct locking block (141) is sleeved on the air duct (13) and connected to the supporting device (11); the air duct locking screw (142) is threadedly connected to the air duct locking block (141), and its end is used to abut against the air duct (13).

4. The liquid crystal glass thickness difference control device according to claim 2 or 3, characterized in that: The control box (12) is connected to the support device (11) via a control box adjustment component (15), and the control box adjustment component (15) is used to adjust the distance between the control box (12) and the furnace wall connecting plate (10).

5. The device for controlling the thickness difference of liquid crystal glass according to claim 4, characterized in that: The regulating box adjusting assembly (15) comprises at least two regulating box adjusting screws (151), one end of the regulating box adjusting screws (151) is connected to the regulating box (12), the other end of the regulating box adjusting screws (151) passes through the furnace wall connecting plate (10) and the supporting device (11), the regulating box adjusting screws (151) are respectively slidably connected to the furnace wall connecting plate (10) and the supporting device (11) along their axial direction, and two regulating box locking nuts (152) for clamping the supporting device (11) are threadedly connected to the regulating box adjusting screws (151).

6. The device for controlling the thickness difference of liquid crystal glass according to claim 1, characterized in that: A gate plate (16) located on one side of the control box (12) is arranged on the inner side of the furnace wall connection plate (10); the gate plate (16) is perpendicular to the furnace wall connection plate (10) and extends along the length direction of the furnace wall connection plate (10); the gate plate (16) is connected to the supporting device (11) via a gate plate adjustment component (17); and the gate plate adjustment component (17) is used to adjust the distance between the gate plate (16) and the furnace wall connection plate (10).

7. The device for controlling the thickness difference of liquid crystal glass according to claim 6, characterized in that: The gate adjustment assembly (17) comprises at least two gate adjustment screws (171), one end of the gate adjustment screw (171) is connected to the gate (16), the other end of the gate adjustment screw (171) passes through the furnace wall connecting plate (10) and the supporting device (11), the gate adjustment screw (171) is slidably connected to the furnace wall connecting plate (10) and the supporting device (11) along its axial direction, and two gate locking nuts (172) for clamping the supporting device (11) are threadedly connected to the gate adjustment screw (171).

8. The device for controlling the thickness difference of liquid crystal glass according to claim 1, characterized in that: An electric heating device (18) is arranged in each of the air ducts (13).

9. The device for controlling the thickness difference of liquid crystal glass according to claim 8, characterized in that: The support device (11) is provided with an air balancing box (19), and the air balancing box (19) is provided with an air inlet connected to its inner cavity. The air inlet end of each air duct (13) is connected to the inner cavity of the air balancing box (19) through a flow meter (20).

10. The liquid crystal glass thickness difference control device according to claim 1, characterized in that: At least two area control devices (21) are arranged on the furnace wall connection plate (10) at intervals along its length direction, the area control device (21) comprising a heat dissipation pipe (211) and a regulating valve (212) arranged on the heat dissipation pipe (211), the heat dissipation pipe (211) is arranged on the outside of the furnace wall connection plate (10), and one end of the heat dissipation pipe (211) is connected to the furnace wall connection plate (10), and a heat dissipation hole (101) is arranged on the furnace wall connection plate (10) at a position facing the inner cavity of the heat dissipation pipe (211).

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