CN213680362U - Production device of flexible glass - Google Patents
Production device of flexible glass Download PDFInfo
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- CN213680362U CN213680362U CN202022911695.2U CN202022911695U CN213680362U CN 213680362 U CN213680362 U CN 213680362U CN 202022911695 U CN202022911695 U CN 202022911695U CN 213680362 U CN213680362 U CN 213680362U
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Abstract
The utility model relates to the technical field of flexible glass, a flexible glass production device is provided, which comprises a glass liquid homogenizing device and a slit device, wherein the glass liquid homogenizing device comprises a platinum rhodium alloy stirring tank with a liquid inlet platinum rhodium alloy channel and a liquid outlet platinum rhodium alloy channel, and a pressure stabilizing and temperature regulating chamber which is connected with the liquid outlet platinum rhodium alloy channel and is made of platinum rhodium alloy materials, the top of the pressure stabilizing and temperature regulating chamber is of a closed structure, the bottom of the pressure stabilizing and temperature regulating chamber is of an arc structure with the middle part sunken downwards, and a liquid outlet is arranged at the center of the bottom of the arc structure; the slit device comprises a central guide plate and side guide plates, wherein the central guide plate is positioned right below a liquid outlet of the pressure-stabilizing temperature-regulating chamber, the side guide plates are symmetrically arranged on two sides of the central guide plate, and a gap is reserved between the central guide plate and each side guide plate to form a double slit structure. The problem of among the prior art slit top glass liquid horizontal difference in temperature great, can not guarantee the uniformity of slit export glass area viscosity, produce glass warpage phenomenon easily is solved.
Description
Technical Field
The utility model relates to a flexible glass technical field, it is specific, relate to a flexible glass's apparatus for producing.
Background
The flexible glass is ultrathin glass with the thickness of less than or equal to 0.1 mm. With the rapid development of electronic technology, the possibility of folding electronic products has been a necessary trend for future development. The materials that can be used for the folding screen at present are mainly polyimide and flexible glass. Compared with flexible glass, polyimide has outstanding flexibility and ductility, but is low in temperature resistance (below 300 ℃), easy to age and seriously affects the texture and service life of electronic products. The flexible glass has high transmittance, scratch resistance and high temperature resistance (more than 500 ℃), but has great production difficulty.
At present, the production methods of flat glass mainly comprise a float method, an overflow down-draw method and a slit down-draw method. In the float process, glass floating on molten tin is thinned, and due to the action of surface tension, the difficulty of drawing the glass is extremely high, namely the glass is drawn to be 0.1mm or even below 0.1mm, and the molten tin also has great influence on the surface quality of the glass. The overflow downdraw method is that molten glass overflows from an overflow groove and then is converged at the lower end of an overflow brick to form a glass ribbon. In the overflow process of the glass metal, the thickness of the glass metal is not restricted, the plate root is thicker after the glass metal on the two sides of the overflow brick is converged, and the glass is drawn to be less than 0.1mm by improving the traction speed, so that the difficulty is high. The slit down-draw method is to make the melted homogeneous glass liquid flow out through a slit and then draw a glass plate under the control of a drawing roller. The slit width in the slit downdraw method is adjustable, the thickness of the glass plate root can be effectively controlled, and the glass can be thinned at a proper drawing speed.
The conventional slit draw-down method mainly has the following two problems: the transverse temperature difference of the glass liquid above the slit is large, the consistency of the viscosity of the glass ribbon at the outlet of the slit cannot be ensured, and the glass warping phenomenon is easy to generate; secondly, because the viscous force of the glass liquid leaving the slit is already large, the natural polishing process of the glass surface is inhibited by the viscous force and is not realized in time, so that the surface quality of the glass liquid is not high enough, and the glass liquid needs to be mechanically ground and polished to meet the high-quality use requirement.
SUMMERY OF THE UTILITY MODEL
The utility model provides a flexible glass's apparatus for producing has solved the horizontal difference in temperature of slit top glass liquid among the prior art great, can not guarantee the uniformity of slit export glass area viscosity, produces the problem of glass warpage phenomenon easily.
The technical scheme of the utility model as follows: the utility model provides a production facility of flexible glass, includes glass liquid homogenization device and slit device, the liquid outlet of glass liquid homogenization device and the access connection of slit device, the key lies in: the glass liquid homogenizing device comprises a platinum-rhodium alloy stirring tank with a liquid inlet platinum-rhodium alloy channel and a liquid outlet platinum-rhodium alloy channel, and a pressure-stabilizing temperature-regulating chamber which is connected with the liquid outlet platinum-rhodium alloy channel and is made of a platinum-rhodium alloy material, wherein the top of the pressure-stabilizing temperature-regulating chamber is of a closed structure, the bottom of the pressure-stabilizing temperature-regulating chamber is of an arc structure with the middle part sunken downwards, and a liquid outlet is formed in the center of the bottom of the arc structure; the slit device comprises a central guide plate and side guide plates, wherein the central guide plate is positioned right below a liquid outlet of the pressure-stabilizing temperature-regulating chamber, the side guide plates are symmetrically arranged on two sides of the central guide plate, and a gap is reserved between the central guide plate and each side guide plate to form a double slit structure.
The liquid outlet platinum-rhodium alloy channel comprises a horizontal liquid outlet section and an inclined liquid outlet section, one end of the horizontal liquid outlet section is connected with the upper end of the side wall of the platinum-rhodium alloy stirring tank, the other end of the horizontal liquid outlet section is connected with the lower end of the inclined liquid outlet section, and the upper end of the inclined liquid outlet section is connected with the top of the side wall of the pressure-stabilizing temperature-regulating chamber.
The feed liquor platinum rhodium alloy passageway is including the last horizontal feed liquor section, slope feed liquor section, the horizontal feed liquor section down that connect gradually, and the export of horizontal feed liquor section is connected with the lateral wall lower extreme in platinum rhodium alloy stirring pond down.
The cavity between two side guide plates of the slit device is a guide cavity connected with a liquid outlet of the pressure-stabilizing and temperature-adjusting chamber, the upper end of the central guide plate is positioned at the bottom in the guide cavity, the lower end of the central guide plate extends to the outside of the guide cavity, a gap between the central guide plate and each side guide plate is formed into a slit for passing glass liquid, the central guide plate is a central heating mechanism made of heat conduction materials, and the side guide plates are side heating mechanisms made of heat conduction materials.
The central guide plate is erected below the pressure-stabilizing and temperature-regulating chamber by means of support frames arranged at two ends of the central guide plate, and the support frames have lifting freedom degrees.
The side guide plates on two sides of the central guide plate are respectively arranged below the pressure-stabilizing temperature-regulating chamber by means of supporting seats on the outer sides of the side guide plates, and the supporting seats on two sides are provided with moving freedom degrees close to or far away from the central guide plate to form a slit width regulating mechanism.
The production device also comprises a polishing unit, a stretching unit, a destressing unit and an annealing unit which are sequentially arranged below the slit device from top to bottom, the polishing unit, the stretching unit, the destressing unit and the annealing unit all comprise heat insulation plates, a soaking plate vertically arranged above the heat insulation plates, a heat insulation plate arranged outside the soaking plate, and a heating element arranged between the heat insulation plates and the soaking plate, a wiring end of the heating element extends to the outer side of the heat insulation plate, a gap between the two heat insulation plates of the same unit is a glass belt passing cavity, the lower end of a central guide plate is arranged between the two soaking plates of the polishing unit, the stretching unit also comprises a stretching cooling element arranged between the soaking plate and the heating element, and a fixed edge roller set symmetrically arranged along the glass belt passing cavity, the destressing unit also comprises a destressing cooling element arranged between the soaking plate and the heating element, the annealing unit also includes a set of draw rolls symmetrically disposed along the glass ribbon through the chamber.
The viscosity of the glass ribbon in the polishing unit was 103.2-105Pa s, viscosity of the glass ribbon in the thinning unit being 105-106.6Pa · s, viscosity of the glass ribbon in the stress cell being 106.6-1013.6Pa · s, the temperature of the glass ribbon flowing out of the glass ribbon passage chamber of the annealing unit is room temperature.
The utility model discloses a theory of operation and beneficial effect do: the slit method requires very high to the horizontal temperature field of glass liquid, and the uniformity height of horizontal temperature will directly influence glass product quality, with current through installing the electrode additional, utilize electrode pair glass liquid to heat and compare, the utility model discloses utilize self can conductive heating's feed liquor platinum rhodium alloy passageway, platinum rhodium alloy stirring pond, go out liquid platinum rhodium alloy passageway and steady voltage tempering room and heat the glass liquid, glass liquid and feed liquor platinum rhodium alloy passageway, platinum rhodium alloy stirring pond, play liquid platinum rhodium alloy passageway and steady voltage tempering room fully contact, can improve the homogeneity of glass liquid temperature to guarantee the uniformity of the horizontal difference in temperature of glass liquid in the steady voltage tempering room, improve the uniformity of proving slit device exit glass tape viscosity, avoid producing glass warpage phenomenon, improve the quality of glass product.
The melted glass liquid enters a pressure-stabilizing temperature-regulating room through a liquid inlet platinum-rhodium alloy channel, a platinum-rhodium alloy stirring tank and a liquid outlet platinum-rhodium alloy channel, so that the homogeneity of the glass liquid is fully ensured. The bottom of the pressure-stabilizing temperature-regulating chamber is of an arc structure, the top of the pressure-stabilizing temperature-regulating chamber is sealed, in the production process, the glass liquid in the pressure-stabilizing temperature-regulating chamber is always in a full-filling state, the pressure-stabilizing temperature-regulating chamber is always filled with the glass liquid, the stability of the glass liquid pressure entering the slit of the slit device is ensured, and the influence of the liquid level height in the glass melting process on the drawing stability is avoided. The stirring and homogenizing of the glass liquid are carried out in the platinum rhodium alloy stirring pool instead of the pressure stabilizing and temperature regulating chamber, and the glass liquid pressure entering the slit of the slit device cannot be influenced in the stirring process.
The utility model discloses feed liquor platinum rhodium alloy passageway, play liquid platinum rhodium alloy passageway, platinum rhodium alloy stirring pond and the design in steady voltage thermoregulation room for bubble-free in the glass liquid, the glass liquid viscosity is even unanimous in the steady voltage thermoregulation room, and the glass liquid difference in temperature of slit top is less than or equal to 1 ℃, has fully guaranteed homogenization effect, glass liquid temperature homogeneity and the pressure stability of glass liquid, can draw high-quality flexible glass.
The double-slit structural design that two side guide plates and a central guide plate are matched is adopted, the central guide plate and the side guide plates are mutually independent, and the quality of the flexible glass can be improved by adjusting the slit width between the side guide plates and the central guide plate.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the middle slit device of the present invention.
Fig. 3 is a schematic structural view of the center guide plate of the present invention.
FIG. 4 is a schematic structural view of a molten glass homogenizing device according to the present invention.
In the figure: 1. a liquid inlet platinum rhodium alloy channel 1-1, an upper horizontal liquid inlet section 1-2, an inclined liquid inlet section 1-3, a lower horizontal liquid inlet section 2, a liquid outlet platinum rhodium alloy channel 2-1, a horizontal liquid outlet section 2-2, an inclined liquid outlet section 3, a platinum rhodium alloy stirring tank 4, a pressure stabilizing and temperature regulating chamber 5, a central guide plate 5-1, an upper arc plate 5-2, a middle rectangular plate 5-3, a lower V-shaped plate 6, a side guide plate 7, a support seat 8, a polishing unit 9, a thinning unit 9-1, a thinning cooling element 9-2, a fixed edge roller set 10, a stress removing unit 10-1, a stress removing cooling element 11, an annealing unit 11-1, a traction roller set 12, a heat insulation plate 13, a heat equalization plate 14, a heat insulation plate 15 and a heating element, 16. a glass ribbon.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
In a specific embodiment, as shown in fig. 1, a production apparatus for flexible glass comprises a glass liquid homogenizing apparatus and a slit apparatus, wherein a liquid outlet of the glass liquid homogenizing apparatus is connected with an inlet of the slit apparatus, the glass liquid homogenizing apparatus comprises a platinum-rhodium alloy stirring tank 3 with a liquid inlet platinum-rhodium alloy channel 1 and a liquid outlet platinum-rhodium alloy channel 2, and a pressure-stabilizing temperature-regulating chamber 4 which is connected with the liquid outlet platinum-rhodium alloy channel 2 and is made of a platinum-rhodium alloy material, the top of the pressure-stabilizing temperature-regulating chamber 4 is of a closed structure, the bottom of the pressure-stabilizing temperature-regulating chamber is of an arc structure with the middle part depressed downwards, and a liquid outlet is arranged at the center of; the slit device comprises a central guide plate 5 and side guide plates 6, wherein the central guide plate 5 is positioned right below a liquid outlet of the pressure-stabilizing temperature-regulating chamber 4, the side guide plates 6 are symmetrically arranged on two sides of the central guide plate 5, and a gap is reserved between the central guide plate 5 and each side guide plate 6 to form a double slit structure. The mass percent of the platinum and the rhodium is (70-90%): (30% -10%), the platinum rhodium alloy is a platinum-based rhodium-containing binary alloy, and is a continuous solid solution at high temperature, and the rhodium mainly has the function of improving the mechanical strength of the liquid inlet platinum rhodium alloy channel 1, the liquid outlet platinum rhodium alloy channel 2, the platinum rhodium alloy stirring tank 3 and the pressure-stabilizing temperature-regulating chamber 4, so that the platinum rhodium alloy has stable high-temperature mechanical properties. The peripheries of the liquid inlet platinum-rhodium alloy channel 1, the liquid outlet platinum-rhodium alloy channel 2 and the platinum-rhodium alloy stirring tank 3 are all provided with heat preservation layers, heat loss can be reduced, cost is saved, and the three can be independently electrified and heated to adjust the temperature of glass liquid. A stirring device is arranged in the platinum rhodium alloy stirring tank 3, and the purpose of the stirring device is to promote the homogenization of the molten glass. The liquid inlet platinum-rhodium alloy channel 1 and the liquid outlet platinum-rhodium alloy channel 2 have good homogenization and bubble discharge effects, and provide high-quality molten glass for the pressure-stabilizing temperature-regulating chamber 4. Be provided with the (mixing) shaft in platinum rhodium alloy stirring pond 3, be fixed with stirring vane on the (mixing) shaft, be connected the (mixing) shaft and motor and can realize automatic stirring, automated operation, labour saving and time saving. Install the speed reducer additional between (mixing) shaft and motor, can adjust the rotation rate of (mixing) shaft according to actual need, convenient and practical more.
The top in steady voltage temperature regulating room 4 is enclosed construction, bottom for middle undercut's arc structure, is provided with the liquid outlet in the center department of arc structure bottom, and glass liquid flows in from the side, and the purpose of design like this is as follows: firstly, the glass liquid flows in from the side surface, so that the influence of the glass liquid flow on the stability of the plate root can be prevented; the top of the melting chamber is in a closed structure, the glass liquid is always in a full state, and the plate root can be prevented from being influenced by the height of the liquid level in the melting chamber; the bottom of the slit device is of an arc structure, so that dead corners can be effectively prevented, the stable flow of glass liquid is promoted, and high-quality glass liquid is provided for the slit device; and fourthly, the platinum-rhodium alloy material is adopted, the cavity can be heated through the electrode, and then the temperature field of the glass metal in the cavity is tightly regulated and controlled.
As a further improvement of the utility model, the liquid outlet platinum-rhodium alloy channel 2 comprises a horizontal liquid outlet section 2-1 and an inclined liquid outlet section 2-2, one end of the horizontal liquid outlet section 2-1 is connected with the upper end of the side wall of the platinum-rhodium alloy stirring tank 3, the other end of the horizontal liquid outlet section is connected with the lower end of the inclined liquid outlet section 2-2, and the upper end of the inclined liquid outlet section 2-2 is connected with the top of the side wall of the pressure stabilizing and temperature adjusting chamber 4. As shown in figure 1, a platinum rhodium alloy stirring tank 3, a horizontal liquid outlet end 2-1, an inclined liquid outlet section 2-2 and a pressure-stabilizing temperature-regulating chamber 4 are sequentially connected from left to right, and the right end of the inclined liquid outlet section 2-2 is inclined upwards, so that the horizontal speed of glass liquid is reduced, and the disturbance of inlet glass liquid on the glass liquid in the pressure-stabilizing temperature-regulating chamber 4 is reduced.
As a further improvement of the utility model, the liquid inlet platinum-rhodium alloy channel 1 comprises an upper horizontal liquid inlet section 1-1, an inclined liquid inlet section 1-2 and a lower horizontal liquid inlet section 1-3 which are connected in sequence, and the outlet of the lower horizontal liquid inlet section 1-3 is connected with the lower end of the side wall of the platinum-rhodium alloy stirring tank 3. The included angle between the inclined liquid inlet section and the horizontal plane is 40-60 degrees. As shown in figure 1, an upper horizontal liquid inlet section 1-1, an inclined liquid inlet section 1-2, a lower horizontal liquid inlet section 1-3 and a platinum-rhodium alloy stirring tank 3 are sequentially connected from left to right, the right end of the inclined liquid inlet section 1-2 is inclined downwards, the height of the platinum-rhodium alloy stirring tank 3 is slightly higher than that of the upper horizontal liquid inlet section 1-1, and the liquid level height in the platinum-rhodium alloy stirring tank 3 can be ensured.
As right the utility model discloses a further improvement, cavity between two side guide plates 6 of slit device forms the water conservancy diversion chamber of being connected with the liquid outlet of steady voltage temperature regulating room 4, the upper end of central guide plate 5 is located the bottom of water conservancy diversion intracavity, the lower extreme of central guide plate 5 extends to the water conservancy diversion chamber outside, clearance between central guide plate 5 and every side guide plate 6 all forms the slit that is used for passing through the glass liquid, central guide plate 5 is the central heating mechanism of being made by the heat conduction material, side guide plate 6 is the side heating mechanism of being made by the heat conduction material. As shown in fig. 1 and 2, the double-slit structural design of two side guide plates 6 and one center guide plate 5 is adopted, the center guide plate 5 and the side guide plates 6 are independent from each other, and can be independently heated and subjected to temperature regulation, so that the controllability of slit temperature is improved, the viscous force of glass liquid can be reduced aiming at different material glass components, a good polishing effect is realized, the mechanical grinding and polishing process can be omitted on the premise of meeting the high-quality use requirement, and the design requirement can be more conveniently met. The horizontal distance between the two side guide plates 6 is gradually reduced from top to bottom, thus being beneficial to the downward flow of the glass liquid.
The length of the central guide plate 5 is 400-1000mm, the height h is 60-200mm, the central guide plate 5 comprises an upper arc-shaped plate 5-1, a middle rectangular plate 5-2 and a lower V-shaped plate 5-3 which are sequentially arranged from top to bottom, the upper arc-shaped plate 5-1 is a semicircular plate with the diameter equal to the thickness d of the middle rectangular plate 5-2, d is 5-10mm, and the height ratio of the middle rectangular plate 5-2 to the lower V-shaped plate 5-3 is (3-5): (5-7), and preferably 4: 6, a vertical channel between the middle rectangular plate 5-2 and the inner wall of the bottom of the side guide plate 6 is formed into a slit, and the thickness of the side guide plate 6 is 2-5 mm. As shown in fig. 2 and 3, the upper arc-shaped plate 5-1 enables the molten glass to be smoothly distributed to the left and right sides, and the molten glass can be effectively prevented from accumulating at the top of the central guide plate 5. The middle rectangular plate 5-2 can ensure the sufficient rigidity of the guide plate 5, and the lower V-shaped plate 5-3 can ensure the effective confluence of the flow-dividing glass liquid. The lower end of the middle rectangular plate 5-2 can not be higher than the bottom end of the side guide plate 6, so as to ensure that the widths of the slits are consistent all the time, and the widths of the slits are equal, so that the flowing stability can be ensured.
As right the utility model discloses a further improvement, central guide plate 5 erects in steady voltage temperature regulating room 4 below with the help of the support frame that sets up at its both ends, and the support frame has the lift degree of freedom. The upper and lower positions of the central guide plate 5 can be adjusted by utilizing the support frame, so that the glass crystallization is effectively avoided.
As right the utility model discloses a further improvement, the side deflector 6 that is located 5 both sides of central guide plate erects in steady voltage temperature regulating room 4 below with the help of the supporting seat 7 that is located its outside respectively, and the supporting seat 7 of both sides all has the removal degree of freedom that is close to or keeps away from central guide plate 5 and forms into slit width adjustment mechanism. The side guide plate 6 is supported by the supporting seat 7, the mechanical strength of the slit can be ensured, and the width of the slit can be adjusted by changing the position of the supporting seat 7. Aiming at different glass components, the purpose of drawing high-quality flexible glass can be achieved by adjusting the temperature of the side guide plate 6 and the central guide plate 5, the width of the slit, the height of the central guide plate 5 and other factors, and in order to better explain the setting condition of the central guide plate 5, the following two glass components are listed:
the glass comprises the following components in percentage by mass: SiO 22 72％，Al2O3 1％，Na2O 14％，K2O1%, CaO 8% and MgO 4%; secondly, the glass comprises the following components in percentage by mass: SiO 22 65.5％，Al2O3 6％，Na2O 14％，K2O1%, CaO 9.5% and MgO 4%. In the forming of molten glass, the viscosity is between 103.2-106.6The temperature difference between Pa and s is used for evaluating the property of the glass material, wherein the temperature difference of the component (i) is 291 ℃, and the temperature difference of the component (ii) is 272 ℃.
Aiming at the two glass components, the height of the central guide plate 5 is 100mm, and the height ratio of the middle rectangular plate 5-2 to the lower V-shaped plate is 4: 6, slit width of 2.5mm, viscosity of glass liquid entering slit of 103Pa · s, traction speed 55 mm/s. When the bottom of the middle rectangular plate 5-2 is flush with the bottom of the side flow guide plate 6, the thickness of the glass drawn by the component I is 140 micrometers, and the surface roughness Ra of the glass is 2.4 nm; the thickness of the drawn glass is 96 mu m, and the surface roughness of the glass is 2.7 nm. When the bottom of the middle rectangular plate 5-2 is 20mm lower than the bottom of the side guide plate 6, the composition (I) is long in material property, the polishing time is longer, the thickness of the drawn glass is 106 mu m, and the surface roughness Ra of the glass is 1.7 nm. Component II, the viscosity of the glass at the bottom of the central guide plate 5 due to short material propertyToo low, affecting the flow, the glass surface appears to be very wavy.
As a further improvement to the utility model, the production device further comprises a polishing unit 8, a thinning unit 9, a destressing unit 10 and an annealing unit 11 which are sequentially arranged below the slit device from top to bottom, the polishing unit 8, the thinning unit 9, the destressing unit 10 and the annealing unit 11 all comprise a heat insulation board 12, a soaking board 13 vertically arranged above the heat insulation board 12, a heat insulation board 14 arranged outside the soaking board 13 and a heating element 15 arranged between the heat insulation board 14 and the soaking board 13, the wiring end of the heating element 15 extends to the outside of the heat insulation board 14, the gap between the two heat insulation boards 12 of the same unit is a glass belt passing cavity, the lower end of the central guide plate 5 is positioned between the two soaking boards 13 of the polishing unit 8, the thinning unit 9 further comprises a thinning cooling element 9-1 arranged between the soaking board 13 and the heating element 15 and a fixed edge roller group 9-2 symmetrically arranged along the glass belt passing cavity, the de-stressing unit 10 further comprises a de-stressing cooling element 10-1 disposed between the soaking plate 13 and the heating element 15, and the annealing unit 11 further comprises a set of draw rolls 11-1 symmetrically disposed along the glass ribbon pass-through chamber.
The combination of the heating element 15 and the soaking plate 13 of the polishing unit 8 can provide a uniform temperature field for the glass ribbon. Different from the overflow brick in the overflow down-drawing method, the central guide plate 5 can be heated and combined with the ambient temperature field, so that the rapid polishing of the glass liquid surface can be realized within a short distance. Meanwhile, the central guide plate 5 can effectively avoid glass crystallization by moving up and down and adjusting the temperature. The thinning unit 9 requires the glass ribbon to be rapidly cooled to the vicinity of the softening point, and the fixed edge roller set 9-2 is used for thinning. The thinning unit 9 and the destressing unit 10 are partitioned by a heat insulation board 12, so as to improve the temperature controllability of the thinning unit 9. The distressing unit 10 and the annealing unit 11 are designed in a partitioning mode, so that the controllability of a temperature field can be improved, and the disturbance from air flow to the temperature field can be avoided. The polishing unit 8, the thinning unit 9, the stress removing unit 10 and the annealing unit 11 are designed in four regions, so that a temperature field and a speed field in the flexible glass drawing process are ensured, and the production quality of the flexible glass is improved.
As a further improvement to the present inventionFurthermore, the viscosity of the glass ribbon 16 located in the polishing unit 8 is made 10 by the regulation of the heating element 15 in the polishing unit 83.2-105Pa · s, by controlling the heating element 15 and the thinning cooling element 9-1 in the thinning unit 9, so that the viscosity of the glass ribbon 16 located in the thinning unit 9 is 105-106.6Pa s, such that the viscosity of the glass ribbon 16 located in the stress relief unit 10 is 10 by controlling the heating element 15 and the stress relief cooling element 10-1 within the stress relief unit 106.6-1013.6Pa · s, by regulating the heating element 15 in the annealing unit 11, the temperature of the glass ribbon 16 flowing out of the glass ribbon passage chamber of the annealing unit 11 is room temperature.
A method of producing flexible glass comprising the steps of:
a. the melted glass liquid enters a platinum rhodium alloy stirring tank 3 from left to right through a liquid inlet platinum rhodium alloy channel 1 for stirring, the rotating speed of a stirring shaft is 3-10r/min during stirring, and the viscosity of the glass liquid entering the liquid inlet platinum rhodium alloy channel 1 is 101.5-102Pa·s；
b. After the stirring is finished, the glass liquid enters the pressure-stabilizing temperature-regulating chamber 4 from left to right through the liquid outlet platinum-rhodium alloy channel 2, the temperature of the glass liquid is controlled by the pressure-stabilizing temperature-regulating chamber 4, and the viscosity of the glass liquid flowing out of the liquid outlet platinum-rhodium alloy channel 2 is 102.5-102.7The viscosity of the molten glass in the pressure-stabilizing and temperature-regulating chamber 4 of Pa.s is 102.7-103.2Pa·s；
c. The glass liquid with good temperature control flows into the flow guide cavity between the two side flow guide plates 6 from top to bottom, then flows out through the left and right slits with the width of d1 under the action of the central flow guide plate 5, enters between the left and right soaking plates 13 of the polishing unit 8, and is converged at the bottom of the central flow guide plate 5 to form a glass ribbon 16, the polishing unit 8 adjusts the viscosity of the glass ribbon 16 to 103.2-105Pa.s, the fixed edge roller group 9-2 of the thinning unit 9 thins the glass ribbon 16 at the drawing speed of 10-100mm/s, and the thinning unit 9 adjusts the viscosity of the glass ribbon 16 to 105-106.6Pa s, the thinned glass ribbon 16 passes through the stress relief unit 10 and enters the annealing unit 11, and the stress relief unit 10 adjusting the viscosity of the glass ribbon 16 to 106.6-1013.6Pa.s, then enters an annealing unit 11, the drawing speed of an upper drawing roller group 11-1 and a lower drawing roller group 11-1 is between 10 and 100mm/s, and the drawing speed of the lower drawing roller is 0.5 to 1mm/s higher than that of the upper drawing roller, so as to ensure the tension of the glass surface.
The final thickness of the ribbon 16 is related to the double slit width, the height of the central baffle 5, the pull rate of the deckle roll set 9-2, and the pull rate of the pull roll set 11-1.
In order to ensure the consistency of the transverse temperature difference of the glass liquid in the pressure-stabilizing temperature-regulating chamber, the liquid inlet platinum-rhodium alloy channel 1 and the liquid outlet platinum-rhodium alloy channel 2 are round tubes, the diameter of each round tube is 100-200mm, and the wall thickness is 1-2.5 mm. The platinum rhodium alloy stirring tank 3 is a barrel, the inner diameter of the barrel is 300-800 mm, and the liquid level height is 400-800 mm.
As shown in fig. 4, the top plate of the pressure-stabilizing temperature-regulating chamber 4 is a horizontal plate, the bottom plate is a semicircular arc plate, the length direction is only the end surface to extend, the horizontal plate can be tightly attached to the liquid level, and the pressure stability on the whole plane is ensured. The wall thickness of steady voltage temperature regulating room 4 is 1-2.5mm, and the interval between the up end of steady voltage temperature regulating room 4 to the terminal surface under the arc structure is D, and liquid outlet 4-1 height is H, H: d ═ 1-4: 20, the inner diameter of the liquid outlet 4-1 is 30-80mm, and the inner wall of the liquid outlet 4-1 is a vertical surface, so that the liquid outlet is more conveniently butted with the slit device.
Claims (8)
1. The utility model provides a production facility of flexible glass, includes glass liquid homogenization device and slit device, the liquid outlet of glass liquid homogenization device and the access connection of slit device, its characterized in that: the glass liquid homogenizing device comprises a platinum-rhodium alloy stirring tank (3) with a liquid inlet platinum-rhodium alloy channel (1) and a liquid outlet platinum-rhodium alloy channel (2), and a pressure-stabilizing temperature-regulating chamber (4) which is connected with the liquid outlet platinum-rhodium alloy channel (2) and is made of platinum-rhodium alloy materials, wherein the top of the pressure-stabilizing temperature-regulating chamber (4) is of a closed structure, the bottom of the pressure-stabilizing temperature-regulating chamber is of an arc structure with the middle part sunken downwards, and a liquid outlet is formed in the center of the bottom of the arc structure; the slit device comprises a central guide plate (5) and side guide plates (6), wherein the central guide plate (5) is located right below a liquid outlet of the pressure-stabilizing temperature-regulating chamber (4), the side guide plates (6) are symmetrically arranged on two sides of the central guide plate (5), and a gap is reserved between the central guide plate (5) and each side guide plate (6) to form a double slit structure.
2. The apparatus for producing flexible glass as defined in claim 1, wherein: the liquid outlet platinum rhodium alloy channel (2) comprises a horizontal liquid outlet section (2-1) and an inclined liquid outlet section (2-2), one end of the horizontal liquid outlet section (2-1) is connected with the upper end of the side wall of the platinum rhodium alloy stirring tank (3), the other end of the horizontal liquid outlet section is connected with the lower end of the inclined liquid outlet section (2-2), and the upper end of the inclined liquid outlet section (2-2) is connected with the top of the side wall of the pressure stabilizing and temperature regulating chamber (4).
3. The apparatus for producing flexible glass as defined in claim 1, wherein: the liquid inlet platinum-rhodium alloy channel (1) comprises an upper horizontal liquid inlet section (1-1), an inclined liquid inlet section (1-2) and a lower horizontal liquid inlet section (1-3) which are sequentially connected, and an outlet of the lower horizontal liquid inlet section (1-3) is connected with the lower end of the side wall of the platinum-rhodium alloy stirring tank (3).
4. The apparatus for producing flexible glass as defined in claim 1, wherein: the cavity between two side guide plates (6) of the slit device is a guide cavity connected with the liquid outlet of the pressure-stabilizing temperature-regulating chamber (4), the upper end of the central guide plate (5) is positioned at the bottom in the guide cavity, the lower end of the central guide plate (5) extends to the outside of the guide cavity, gaps between the central guide plate (5) and each side guide plate (6) are formed into slits used for passing through glass liquid, the central guide plate (5) is a central heating mechanism made of heat-conducting materials, and the side guide plates (6) are side heating mechanisms made of heat-conducting materials.
5. The apparatus for producing flexible glass as defined in claim 4, wherein: the central guide plate (5) is erected below the pressure-stabilizing and temperature-regulating chamber (4) by means of support frames arranged at two ends of the central guide plate, and the support frames have lifting freedom degrees.
6. The apparatus for producing flexible glass as defined in claim 4, wherein: the side guide plates (6) positioned at the two sides of the central guide plate (5) are respectively erected below the pressure-stabilizing temperature-regulating chamber (4) by means of supporting seats (7) positioned at the outer sides of the side guide plates, and the supporting seats (7) at the two sides are provided with moving freedom degrees close to or far away from the central guide plate (5) to form a slit width regulating mechanism.
7. The apparatus for producing flexible glass as defined in claim 1, wherein: the production device further comprises a polishing unit (8) which is sequentially arranged below the slit device from top to bottom, a thin stretching unit (9), a stress removing unit (10) and an annealing unit (11), the polishing unit (8), the thin stretching unit (9), the stress removing unit (10) and the annealing unit (11) comprise a heat insulation plate (12), a soaking plate (13) which is vertically arranged above the heat insulation plate (12), a heat insulation plate (14) which is arranged on the outer side of the soaking plate (13), and a heating element (15) which is arranged between the heat insulation plate (14) and the soaking plate (13), a wiring end of the heating element (15) extends to the outer side of the heat insulation plate (14), a gap between two heat insulation plates (12) of the same unit is a glass belt passing cavity, the lower end of a central guide plate (5) is arranged between the two soaking plates (13) of the polishing unit (8), the thin stretching unit (9) further comprises a thin stretching cooling element (9) which is arranged between the soaking plate (13) and the heating element (15 -1), and a set of deckle rollers (9-2) symmetrically disposed along the glass ribbon through-cavity, the de-stressing unit (10) further comprising a de-stressing cooling element (10-1) disposed between the soaking plate (13) and the heating element (15), the annealing unit (11) further comprising a set of pulling rollers (11-1) symmetrically disposed along the glass ribbon through-cavity.
8. The apparatus for producing flexible glass as defined in claim 7, wherein: the viscosity of the glass ribbon (16) in the polishing unit (8) is 103.2-105Pa s, viscosity of the glass ribbon (16) in the thinning unit (9) is 105-106.6Pa s, the viscosity of the glass ribbon (16) in the stress cell (10) being 106.6-1013.6Pa · s, the temperature of the glass ribbon (16) flowing out of the glass ribbon passing chamber of the annealing unit (11) is room temperature.
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|---|---|---|---|
| CN202022911695.2U CN213680362U (en) | 2020-12-08 | 2020-12-08 | Production device of flexible glass |
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| CN202022911695.2U CN213680362U (en) | 2020-12-08 | 2020-12-08 | Production device of flexible glass |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112340965A (en) * | 2020-12-08 | 2021-02-09 | 河北省沙河玻璃技术研究院 | Production device and production method of flexible glass |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112340965A (en) * | 2020-12-08 | 2021-02-09 | 河北省沙河玻璃技术研究院 | Production device and production method of flexible glass |
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