CN222331791U - Ultra-thin glass forming device - Google Patents

Abstract

The utility model relates to the technical field of ultrathin glass equipment and discloses a forming device of ultrathin glass, which comprises a muffle furnace, a shaping part, a primary thinning traction roller, a secondary thinning part and an annealing part which are sequentially arranged, wherein a feed pipe and overflow bricks are arranged in the muffle furnace, the shaping part comprises a traction roller for a guide plate, a first shaping furnace, an edge roller and a first cooling shaping device which are sequentially arranged along the traction roller for the guide plate, the secondary thinning part comprises a secondary thinning traction roller, a secondary thinning heating furnace and a second cooling shaping device which are sequentially arranged along the secondary thinning traction roller, and the annealing part comprises a plurality of annealing furnaces and auxiliary traction rollers arranged among the annealing furnaces. The thickness of the ultrathin glass can be controlled more accurately by adjusting and controlling the temperature and the stress of the glass in the process of drawing the thin twice, so that the high precision and the uniformity of the thickness are realized, the requirements of different application scenes are met, and the production efficiency is improved.

Description

Forming device for ultrathin glass

Technical Field

The utility model relates to the technical field of ultrathin glass equipment, in particular to a forming device for ultrathin glass.

Background

With the advent of the folded screen age, ultrathin (thickness less than 0.1 mm) flexible glass substrates are an indispensable material for folding terminal equipment. Currently, overflow downdraw and slot downdraw are most typical in the production of glass sheets by downdraw. The overflow downdraw method refers to a method that molten glass is conveyed into a forming device with a wedge-shaped cross-section shape through a discharge pipe, overflows from two sides of a groove of the forming device, passes through the top of the forming device, flows down along two side wall surfaces of the forming device, is fused together at the junction of two side walls at the bottom of the forming device to form a glass ribbon, and finally forms a glass plate. The thickness of the glass substrate produced by the overflow down-drawing process of the prior one-time drawing Bao Fa is more than or equal to 0.1mm, and the thickness of the glass which can be stably and quantitatively produced is 0.4-0.7 mm. Along with the great explosion of the demand of flexible display screens, the requirements on the thinning and the light weight of glass are also higher and higher, and the bending radius and the folding radius of the glass are also required to be smaller and smaller, and the thickness of the glass is required to be smaller than 0.1mm.

CN 103922567A discloses a glass plate manufacturing apparatus, however, the manufacturing apparatus only cooperates with the thinning apparatus to produce glass through an overflow trough, and there are problems of incapability of continuous production, poor flatness of glass, low production efficiency, and the like.

Accordingly, there is a need in the art for an improved apparatus for forming ultra-thin glass.

Disclosure of utility model

Accordingly, an object of the embodiments of the present utility model is to provide a forming device for ultra-thin glass, which solves the problems of the prior art that continuous production is impossible, flatness of glass is poor, and production efficiency is low.

Based on the above object, the embodiment of the utility model provides a forming device for ultra-thin glass, which comprises a muffle furnace, a shaping part, a primary drawing traction roller, a secondary drawing part and an annealing part which are sequentially arranged, wherein,

A feed pipe and overflow bricks are arranged in the muffle furnace;

The shaping part comprises a traction roller for the guide plate, a first shaping furnace, an edge roller and a first cooling shaping device which are sequentially arranged along a first direction;

The secondary thinning part comprises a secondary thinning traction roller, a secondary thinning heating furnace and a second cooling and shaping device which are sequentially arranged along the first direction;

The annealing section includes a plurality of annealing furnaces and a plurality of auxiliary pulling rolls.

In some embodiments, the shaping section further comprises a second shaping oven disposed downstream of the first cooling shaping device in the first direction.

In some embodiments, the annealing furnace comprises a first annealing furnace, a second annealing furnace and a third annealing furnace, wherein the first annealing furnace is arranged at the downstream of the secondary thinning part along the first direction, and a plurality of auxiliary traction rollers are respectively arranged in the second annealing furnace and the third annealing furnace.

In some embodiments, the primary ironing pull roll and the secondary ironing pull roll are both fused silica pull rolls.

In some embodiments, the edge rollers are vertical edge rollers.

In some embodiments, the overflow brick includes an inlet end connected to the feed tube and an outlet end in communication with the shaping portion for flowing the glass solution to the shaping portion, the overflow brick having a flow regulating groove formed therein.

In some embodiments, the thickness of the glass ribbon after shaping and edge pulling of the shaping portion ranges from 0.4 mm to 0.7mm.

In some embodiments, the apparatus further comprises an integrated control system electrically connected to the first shaping furnace, the edge roller, the first cooling shaping device, the second cooling shaping device, the secondary ironing heating furnace, and the plurality of annealing furnaces.

In some embodiments, the apparatus further comprises a display panel coupled to the integrated control system to display the operational information.

In some embodiments, the secondary ironing pull roller 41 and the primary ironing pull roller 30 are set to operate at different pull speeds.

The utility model has at least the following beneficial technical effects:

The device of the utility model pulls out the ultrathin flexible glass substrate with the thickness smaller than 0.1mm through an overflow down-draw production process, ensures the uniform flow of molten glass liquid through a high-temperature overflow mode, is favorable for producing glass with smoother surface and more uniform thickness, continuously produces ultrathin glass through a plurality of processes of shaping, primary thinning, secondary thinning and annealing, and can more accurately control the thickness of the ultrathin glass by adjusting and controlling the temperature and the stress of the glass in the secondary thinning process through the secondary thinning Bao Fa, thereby meeting the requirements of different application scenes and improving the production efficiency.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other embodiments may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an embodiment of an apparatus for forming ultra-thin glass according to the present utility model;

reference numerals illustrate:

10. A muffle furnace; 11, a feeding pipe 12 and overflow bricks;

20. A shaping part; 21, a first shaping furnace, 22, an edge roller, 23, a first cooling shaping device;

30. A pull-down roller is pulled down once;

40. The device comprises a secondary thinning part, a secondary thinning traction roller, a secondary thinning heating furnace, a secondary cooling shaping device and a secondary cooling shaping device, wherein the secondary thinning part comprises a secondary thinning traction roller 41 and a secondary thinning heating furnace 42;

50. An annealing part, 51, an auxiliary traction roller, 52, a first annealing furnace, 53, a second annealing furnace, 54 and a third annealing furnace;

60. A glass ribbon.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the following embodiments of the present utility model will be described in further detail with reference to the accompanying drawings.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein are used for the purpose of describing particular embodiments only and are not intended to limit the utility model, e.g., the terms "length," "width," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate orientations or positions based on the orientations or positions shown in the drawings, which are merely for convenience of description and are not to be construed as limiting the present utility model.

The terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and in the foregoing drawings are intended to cover non-exclusive inclusions, and the terms "first", "second", and the like in the description and the claims of the utility model or the foregoing drawings are used for distinguishing between different objects and not for describing a particular sequential order. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.

In the description of the utility model and the claims and the above figures, when an element is referred to as being "fixed" or "mounted" or "disposed" or "connected" to another element, it can be directly or indirectly on the other element. For example, when an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

Furthermore, references herein to "an embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

As shown in fig. 1, the forming apparatus for ultra-thin glass provided by the present utility model comprises a muffle furnace 10, a shaping portion 20, a primary drawing roller 30, a secondary drawing portion 40, and an annealing portion 50, which are sequentially arranged, wherein,

A feed pipe 11 and overflow bricks 12 are arranged in the muffle furnace 10;

The shaping part 20 comprises a traction roller 25 for a leading plate, a first shaping furnace 21, an edge roller 22 and a first cooling shaping device 23 which are sequentially arranged along a first direction X;

The secondary thinning part 40 comprises a secondary thinning traction roller 41, a secondary thinning heating furnace 42 and a second cooling shaping device 43 which are sequentially arranged along the first direction X;

The annealing section 50 includes a plurality of annealing furnaces and a plurality of auxiliary pulling rolls 51.

Further, the shaping unit further includes a second shaping furnace 24, the second shaping furnace 24 is disposed downstream of the first cooling shaping device 23 along the first direction X, and the pulling rolls 25 for the pulling plate in the second shaping furnace 24 do not pull glass during normal production, and the pulling rolls 51 clamp and pull down the glass ribbon 60 only when the muffle 10 starts to flow glass initially or when the glass ribbon 60 breaks and is pulled to form the glass ribbon 60.

Further, the annealing section 50 includes a first annealing furnace 52, a second annealing furnace 53, and a third annealing furnace 54, the first annealing furnace 52 being disposed downstream of the secondary ironing section 40 in the first direction X, and the plurality of auxiliary pulling rolls 51 being disposed in the second annealing furnace 53 and the third annealing furnace 54, respectively, or between each annealing furnace. After the secondary drawing pulling roll 41 secondarily draws the glass ribbon 60, the first lehr 52 stress relaxes and structurally densifies the glass ribbon 60, the glass ribbon 60 is annealed in the second lehr 53 with the auxiliary pulling roll 51 acting to stabilize the glass ribbon 60, and the glass ribbon 60 is cooled in the third lehr 54 with the auxiliary pulling roll 51 acting to stabilize the glass ribbon 60 between the second lehr 53 and the third lehr 54.

Further, the primary ironing pull roller 30 and the secondary ironing pull roller 41 are fused quartz pull rollers. The fused quartz has extremely high heat resistance and corrosion resistance, can stably work for a long time in high-temperature and high-humidity environments, is not easy to deform or damage, has small thermal expansion coefficient, has good thermal shock resistance, can bear rapid temperature change, and reduces deformation and cracking risks caused by the temperature change, so that the production of ultra-thin glass is further ensured.

Further, the edge roller 22 is a vertical edge roller, and the vertical edge roller adopts a continuous production mode, so that rapid and stable glass guiding can be realized, and the production efficiency is improved.

Further, the overflow brick 12 includes an inlet end and an outlet end, the inlet end is connected with the feeding pipe 11, the outlet end is communicated with the shaping portion 20 so that the glass solution flows to the shaping portion 20, a flow regulating groove is formed in the overflow brick 12, and the flow regulating groove can timely regulate the glass solution condition in the overflow device based on the glass production condition so as to better adapt to the production line.

Further, the thickness range of the glass ribbon 60 after shaping and edge drawing of the shaping part 20 is 0.4-0.7 mm, and the glass ribbon is initially shaped after shaping and edge drawing, so that the subsequent thinning production is facilitated.

Further, the device also comprises an integrated control system, and the integrated control system is electrically connected with the first forming furnace 21, the edge roller 22, the first cooling forming device 23, the second cooling forming device 43, the secondary thinning heating furnace 42 and the annealing furnaces. Preferably, the device further comprises a display panel connected to the integrated control system for displaying the operating information. The real-time temperature and processing information of a plurality of devices are acquired through integrated control, and are displayed through the display panel, so that operators can conveniently check the production progress in real time.

Further, the secondary ironing pull roller 41 and the primary ironing pull roller 30 are set to operate at different pull speeds.

The using method of the ultrathin glass forming device provided by the utility model comprises the following steps:

Glass melt with the viscosity of 10 ⁴～10⁵ poises (poises) enters a muffle furnace from a feed pipe, overflow bricks in the furnace flatten the glass melt into a plane and uniformly cool down and flow downwards to flow out from the brick tips of the overflow bricks and then enter a first forming furnace, a glass plate starts to be thinned into a glass belt with the thickness of 0.4-0.7 mm when the temperature in the first forming furnace is reduced to the viscosity of 10 ⁵～10⁶ poises (poises), a edge roller is used for fixing the plate width and fixing the plate shape under the action of a first cooling and shaping device, a pulling roller is used for a pulling plate in a second shaping furnace, the glass belt is only clamped by the pulling roller and pulled downwards when the muffle furnace starts to flow glass initially or the glass belt is pulled again to form the glass belt after being broken, the lower one-time thinning pulling roller is used for thinning the glass belt for the first time, heating the viscosity of the glass ribbon which is thinned for the first time from 10 ¹⁰～10¹¹ poise (poise) to 10 ⁵～10⁶ poise (poise) in a secondary thinning heating furnace, thinning for the second time, cooling to 10 ⁸～10⁹ poise (poise) under the action of a second cooling shaping device to fix the plate shape of the glass ribbon, then feeding the glass ribbon into a first annealing furnace, carrying out stress relaxation and structural densification in the first annealing furnace after the glass ribbon in the secondary thinning heating furnace is thinned to a thickness smaller than 0.1mm by using a speed ratio of a secondary thinning drawing roller and a primary thinning drawing roller in the first annealing furnace, cooling the temperature of the glass ribbon in the first annealing furnace from 10 ⁹ poise (poise) to 10 ¹² poise (poise), annealing the glass ribbon in the second annealing furnace, cooling the glass ribbon from 10 ¹² poise (poise) to 10 ¹⁷ poise (poise), the auxiliary traction roller is used for stabilizing the plate shape of the glass ribbon, the annealed glass ribbon is stably cooled in a third annealing furnace, the temperature is reduced from 10 ¹⁷ poise (poise) to more than 10 ²⁰ poise (poise), and finally the ultra-thin glass with the thickness less than 0.1mm is formed.

The foregoing is an exemplary embodiment of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the disclosure as defined by the appended claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.

It should be understood that as used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly supports the exception. It should also be understood that "and/or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.

The foregoing embodiment of the present utility model has been disclosed with reference to the number of embodiments for the purpose of description only, and does not represent the advantages or disadvantages of the embodiments.

It will be appreciated by persons skilled in the art that the foregoing discussion of any embodiment is merely exemplary and is not intended to imply that the scope of the disclosure of embodiments of the utility model, including the claims, is limited to such examples, that technical features of the above embodiments or different embodiments may be combined and that many other variations of the different aspects of the embodiments of the utility model as described above exist within the spirit of the embodiments of the utility model, which are not provided in detail for clarity. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the embodiments should be included in the protection scope of the embodiments of the present utility model.

Claims (10)

1. A forming device for ultra-thin glass, characterized in that the forming device comprises a muffle furnace (10), a shaping unit (20), a primary thinning roller (30), a secondary thinning unit (40) and an annealing unit (50) which are arranged in sequence, wherein: The muffle furnace (10) is provided with a feed pipe (11) and an overflow brick (12); The shaping section (20) comprises a plate-leading traction roller (25), a first shaping furnace (21), an edge drawing machine (22) and a first cooling shaping device (23) which are sequentially arranged along a first direction; The secondary thinning section (40) comprises a secondary thinning traction roller (41), a secondary thinning heating furnace (42) and a second cooling and shaping device (43) which are sequentially arranged along the first direction; The annealing section (50) includes a plurality of annealing furnaces and a plurality of auxiliary pulling rollers (51). 2. The ultra-thin glass forming device according to claim 1 is characterized in that the forming part further comprises a second forming furnace (24), and the second forming furnace (24) is arranged downstream of the first cooling and forming device (23) along the first direction. 3. The ultra-thin glass forming device according to claim 1 is characterized in that the annealing section (50) includes a first annealing furnace (52), a second annealing furnace (53) and a third annealing furnace (54), the first annealing furnace (52) is arranged downstream of the secondary thinning section (40) along the first direction, and the multiple auxiliary pulling rollers (51) are respectively arranged in the second annealing furnace (53) and the third annealing furnace (54). 4. The ultra-thin glass forming device according to claim 1 is characterized in that the primary thinning traction roller (30) and the secondary thinning traction roller (41) are both fused quartz traction rollers. 5. The ultra-thin glass forming device according to claim 1, characterized in that the edge drawing machine (22) is a vertical edge drawing machine. 6. The ultra-thin glass forming device according to claim 1 is characterized in that the overflow brick (12) includes an inlet end and an outlet end, the inlet end is connected to the feed pipe (11), and the outlet end is connected to the shaping part (20) so that the glass solution flows to the shaping part (20), and a flow regulating groove is formed in the overflow brick (12). 7. The ultra-thin glass forming device according to claim 1, characterized in that the thickness of the glass ribbon (60) after being shaped and edge-drawn by the shaping part (20) is in the range of 0.4 to 0.7 mm. 8. The ultra-thin glass forming device according to claim 1 is characterized in that the device also includes an integrated control system, and the integrated control system is electrically connected to the first shaping furnace (21), the edge drawing machine (22), the first cooling and shaping device (23), the second cooling and shaping device (43), the secondary thinning heating furnace (42), and the multiple annealing furnaces. 9. The ultra-thin glass forming device according to claim 8, characterized in that the device also includes a display panel, and the display panel is connected to the integrated control system to display working information. 10. The ultra-thin glass forming device according to claim 1 is characterized in that the secondary thinning traction roller (41) and the primary thinning traction roller (30) are set to operate at different traction speeds.