Drawing slot device

Abstract

The present disclosure provides a drawing trough device, which relates to the technical field of glass forming equipment, wherein a drawing trough device comprises: a drawing trough body, comprising: a main body and two cylindrical parts, the top side of the main body forms two symmetrical inclined shoulders, the two cylindrical parts are arranged on the inclined shoulders and communicated with the main body to form a accommodating space, and the thickness of the main body in a first direction is less than the diameter of each cylindrical part; a liquid inlet pipe is arranged between the two inclined shoulders of the main body and connected with the two cylindrical parts to communicate with the accommodating space, and is used to inject glass liquid into the accommodating space; at least two guide plates are symmetrically arranged on the two cylindrical parts, a part of each guide plate is located inside the accommodating space, and the other part is located outside the accommodating space; and a slit groove is opened at the bottom of the main body along the longitudinal direction and extends along the second direction; wherein the first direction and the second direction are perpendicular to each other and respectively perpendicular to the longitudinal direction.

Description

Technical Field

[0001] The present disclosure relates to the technical field of glass forming equipment, and in particular to a drawing groove device. Background Art

[0002] Ultra-thin glass ribbons with a thickness of less than 150 microns have the ability to be bent into rolls that ordinary flat glass does not have, and can be flexibly folded like plastic or rubber. Based on its excellent performance, ultra-thin glass has led to the explosion of bendable and foldable electronic display devices and defined the key development trends in the field of electronic display technology. Ultra-thin glass ribbons used for electronic displays have very high requirements for glass transmittance, surface finish, surface flatness, bending without damage, fracture strength and scratch resistance. These properties basically depend on the internal quality and surface quality of the glass. Internal quality, such as whether the interior of the glass contains bubbles, stripes or whitened grain impurities; surface quality, such as the thickness deviation or surface curvature of the glass. For ultra-thin glass ribbons, both its internal quality and surface quality are deeply affected by its molding process.

[0003] The slit down-drawing method can be applied to the drawing of multiple categories of glass ribbons with a wide viscosity range. Due to the limiting effect of the slit outlet mold, the thickness of the glass produced by the slit down-drawing method has good uniformity. Therefore, the slit down-drawing method is extremely suitable for the industrial production of ultra-thin glass ribbons. According to the fluid force, when the fluid flows from an area with a larger cross-sectional area to an area with a smaller cross-sectional area, it is beneficial to control the flow rate in the outlet area. Therefore, a drawing trough with an upper triangular cross-section and a lower rectangular cross-section is used as the mainstream drawing trough for the current production of ultra-thin glass ribbons. In the related research that has been disclosed, for example, patents CN202808576U and US11180404B2 have respectively made structural improvements to the above-mentioned mainstream drawing troughs, and the flow dead zone of the glass liquid inside the drawing trough is reduced by setting a drainage plate inside the cavity of the drawing trough.

[0004] However, from the perspective of production practice, it is extremely technically difficult to set a drainage plate inside the cavity, and through research and comprehensive production practice experience, it is found that when the above-mentioned drawing trough is used to produce ultra-thin glass ribbons, there is still a dead zone for the flow of glass liquid at the corner of the drainage plate of the drawing trough. Therefore, how to improve the drawing trough to effectively avoid or reduce the flow dead zone generated when the glass liquid flows inside the drawing trough, thereby eliminating bubbles, crystals or inclusions caused by the flow dead zone to improve the quality of the finished product of the ultra-thin glass ribbon is an urgent problem to be solved. Summary of the invention

[0005] A technical problem to be solved by the present disclosure is: how to improve the drawing trough to effectively solve the flow dead zone generated when the glass liquid flows inside the drawing trough, thereby eliminating bubbles, crystals or inclusions caused by the flow dead zone.

[0006] In order to solve the above technical problems, an embodiment of the present disclosure provides a drawing trough device, which includes: a drawing trough body, including: a main body and two cylindrical parts, the top side of the main body forms two symmetrical inclined shoulders, the two cylindrical parts are arranged on the inclined shoulders and connected with the main body to form a accommodating space, and the thickness of the main body in the first direction is smaller than the diameter of each cylindrical part; a liquid inlet pipe is arranged between the two inclined shoulders of the main body and connected with the two cylindrical parts to communicate with the accommodating space, and is used to inject glass liquid into the accommodating space; at least two guide plates are symmetrically arranged on the two cylindrical parts, a part of each guide plate is located inside the accommodating space, and the other part is located outside the accommodating space; and a slit groove is opened at the bottom of the main body along the longitudinal direction and extends along the second direction; wherein the first direction and the second direction are perpendicular to each other and respectively perpendicular to the longitudinal direction.

[0007] In some embodiments, the angle between the axis of each cylindrical portion and the axis of the liquid inlet tube is 10° to 65°; the diameter of each cylindrical portion is 5cm to 12.5cm, and the thickness of the main body portion in the first direction is 0.5 to 0.85 times the diameter of each cylindrical portion.

[0008] In some embodiments, the angle between each guide plate and the axis of the corresponding cylindrical portion is 20° to 160°, and the guide plate is an elliptical plate, a circular plate or a polygonal plate, and its thickness is 0.1 cm to 0.5 cm.

[0009] In some embodiments, when the guide plates are square plates, the length of each guide plate is 1 to 1.6 times the diameter of each cylindrical portion, and the width of each guide plate is 0.6 to 0.95 times the diameter of each cylindrical portion.

[0010] In some embodiments, there are four guide plates, which are respectively disposed at 1 / 2 and 3 / 4 of the length of the two cylindrical parts.

[0011] In some embodiments, each guide plate is provided with a guide hole or a guide groove; the guide holes are a plurality of evenly arranged circular holes or polygonal holes, and the total area of ​​the guide holes is 0.1 to 0.5 times the cross-sectional area of ​​each cylindrical part; the guide grooves are evenly arranged polygonal grooves or hyperbolic grooves, and the total area of ​​the guide grooves is 0.1 to 0.4 times the cross-sectional area of ​​each cylindrical part.

[0012] In some embodiments, the drawing trough device further includes: a heating and temperature control device, which is installed on the outer wall of the drawing trough body and electrically connected to at least two guide plates, and is used to heat the glass liquid inside the drawing trough body and control the temperature of at least two guide plates.

[0013] In some embodiments, the heating and temperature control device includes: a heating component installed on the outer wall of the main body, used to heat the glass liquid inside the drawing trough body; and a temperature control component, electrically connected to the part of at least two guide plates located outside the accommodating space, used to control the temperature of at least two guide plates.

[0014] In some embodiments, the slit groove is provided with a guide portion protruding longitudinally from the bottom of the main body portion for guiding the glass liquid flowing out of the slit groove.

[0015] In some embodiments, the drawing tank body, the liquid inlet pipe and at least two guide plates are all made of metal platinum or platinum alloy that is resistant to high temperatures and has good stability.

[0016] Through the above technical solution, in the drawing tank device provided by the present invention, the glass liquid flows into the internal accommodating space of the device body through the liquid inlet pipe. When the glass liquid reaches the bottom of the third part, the slit groove at the bottom of the third part cannot make the glass liquid flow out of the accommodating space completely. A large amount of glass liquid accumulated at the bottom of the accommodating space will preferentially flow and diffuse to the surroundings from the position of the accommodating space below the liquid inlet pipe, and finally fill the entire accommodating space. When the glass liquid flows along the two first parts to the two sides of the accommodating space, the guide plates symmetrically arranged on the two first parts are located on the accommodating space. The inner part of the space will produce a turbulent effect on the glass liquid flowing here, causing the glass liquid flowing near the guide plate to form a circumferential flow and generate convection with the glass liquid flowing in other directions, thereby accelerating the flow speed of the glass liquid at the local corners, thereby avoiding the glass liquid inside the accommodating space from flowing slowly due to excessive local viscosity and generating a flow dead zone. The drawing trough device provided in the present application can effectively avoid or reduce the flow dead zone generated when the internal glass liquid of the accommodating space flows, thereby eliminating or reducing bubbles, crystallization or inclusions caused by the flow dead zone, thereby improving the quality of the finished product of the ultra-thin glass ribbon. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 is a schematic structural diagram of a drawing slot device disclosed in an embodiment of the present disclosure;

[0019] Figure 2 is a structural schematic diagram of a front view of a drawing slot device disclosed in an embodiment of the present disclosure;

[0020] Figure 3is a structural schematic diagram of a cross-sectional view of a drawing groove device disclosed in an embodiment of the present disclosure;

[0021] Figure 4 It is a schematic diagram of the structure of several guide plates disclosed in the embodiments of the present disclosure;

[0022] Figure 5 is a schematic diagram of a computer-simulated outlet pressure curve at the outlet of the slit groove of the drawing groove device disclosed in an embodiment of the present disclosure;

[0023] Figure 6 It is a schematic diagram of a computer-simulated outlet flow rate curve at the outlet of the slit slot of the drawing slot device disclosed in the embodiment of the present disclosure.

[0024] Description of reference numerals:

[0025] 1. Drawing groove body; 101. Main part; 102. Cylindrical part; 103. Accommodating space; 2. Liquid inlet pipe; 3. Guide plate; 4. Slit groove; 401. Guide part; 5. Heating and temperature control device; 501. Heating component; 502. Temperature control component; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0027] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0028] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0029] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0030] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0031] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0032] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0033] Reference Figure 1 To Attachment Figure 3, an embodiment of the present invention provides a drawing groove device, which includes: a drawing groove body 1, including: a main body 101 and two cylindrical parts 102, the top side of the main body 101 forms two symmetrical inclined shoulders, the two cylindrical parts 102 are arranged on the inclined shoulders and communicated with the main body 101 to form a accommodating space 103, and the thickness of the main body 101 in the first direction X is less than the diameter of each cylindrical part 102; a liquid inlet pipe 2, which is arranged between the two inclined shoulders of the main body 101 and connected with the two cylindrical parts 102 to communicate with the accommodating space 103, and is used to inject glass liquid into the accommodating space 103; at least two guide plates 3, which are symmetrically arranged on the two cylindrical parts 102, respectively, a part of each guide plate 3 is located inside the accommodating space 103, and the other part is located outside the accommodating space 103; and a slit groove 4, which is opened at the bottom of the main body 101 along the longitudinal direction and extends along the second direction Y; wherein the first direction X and the second direction Y are perpendicular to each other and respectively perpendicular to the longitudinal direction.

[0034] Specifically, the drawing trough device disclosed in the embodiment of the present invention includes a drawing trough body 1, which can be integrally cast by metal platinum or platinum alloy material, and includes a main body 101 with an upper section of an isosceles triangle and a lower section of a rectangle, and two cylindrical parts 102. The top side of the part of the upper section of the main body 101 with an isosceles triangle has two symmetrical inclined shoulders, and the cross-sections of the two cylindrical parts 102 are major arc-shaped and are respectively arranged on the two inclined shoulders and connected to the main body 101 to form an accommodating space 103 inside which the flowing glass liquid can be poured. The thickness dimension of the main body 101 in the first direction X is smaller than the diameter dimension of the cross-section of each cylindrical part 102 to ensure that the flow inlet area of ​​the glass liquid is an area with a larger cross-sectional area, so that the glass liquid The glass liquid can flow from the cylindrical part 102 with a larger cross-sectional area into the main part 101 with a relatively smaller cross-sectional area, so as to control the flow rate of the glass liquid in the outlet area. A liquid inlet pipe 2 integrally formed with the drawing tank body 1 is arranged between the two inclined shoulders of the main part 101, and the liquid inlet pipe 2 is connected with the accommodating space 103 through the two cylindrical parts 102. The high-temperature glass liquid can be introduced into the accommodating space 103 through the liquid inlet pipe 2. Each cylindrical part 102 is also provided with a plurality of guide plates 3 made of the same material as the drawing tank body 1, a part of each guide plate 3 is located inside the accommodating space 103 where the cylindrical part 102 is located, and the other part thereof is located outside the accommodating space 103, and a slit groove extending along the second direction Y for allowing the glass liquid to flow out is also longitudinally opened at the bottom of the main part 101 of the drawing tank body 1.

[0035] According to the above, an embodiment of the present invention proposes a drawing trough device, through which high-temperature molten glass can be introduced into the interior of the accommodating space 103 of the drawing trough body 1 through the liquid inlet pipe 2. Since the position of the liquid inlet pipe 2 is in the middle of the entire drawing trough body 1, the molten glass in the accommodating space 103 will preferentially flow along the center position of the drawing trough body 1 to the slit groove 4, and the high-temperature molten glass gathers at the position of the slit groove 4, and then flows to both sides along the two cylindrical parts 102 until the entire accommodating space 103 is filled. A plurality of guide plates 3 evenly arranged on the two cylindrical parts 102 will produce a turbulent flow phenomenon to the high-temperature molten glass, causing the high-temperature molten glass to flow around the guide plates 3, thereby causing local convection of the high-temperature molten glass near the guide plates 3, thereby accelerating the local flow velocity of the high-temperature molten glass at the two cylindrical parts 102, which can effectively reduce or avoid the flow dead zone caused by the local flow velocity of the molten glass being too small, thereby causing the molding quality problem of the formed ultra-thin glass ribbon.

[0036] By the attached Figure 5 and attached Figure 6 It can be seen from the computer software simulation results that the pressure drop of the glass liquid at the outlet of the slit groove of the drawing groove device provided by the embodiment of the present disclosure is basically on the same straight line, and the speed difference of the glass liquid flow at the outlet of the slit groove is very small, which can be regarded as uniform distribution. It can be seen that the drawing groove device provided by the embodiment of the present disclosure can effectively reduce or eliminate the generation of glass crystallization, stripes and bubbles, and ensure the uniformity of the glass thickness at the outlet of the slit groove, so as to obtain high-quality ultra-thin glass ribbon.

[0037] In some embodiments, refer to the attached Figure 1 To Attachment Figure 3 In a specific implementation, the angle between the axis of each cylindrical portion 102 and the axis of the liquid inlet pipe 2 is 10° to 65°; the diameter of each cylindrical portion 102 is 5 cm to 12.5 cm, and the thickness of the main body portion 101 in the first direction X is 0.5 to 0.85 times the diameter of each cylindrical portion 102.

[0038] Specifically, in order to realize that the flow inlet area of ​​the glass liquid is an area with a larger cross-sectional area, in the technical solution adopted by the present invention, the angle between the axis of each cylindrical part 102 and the axis of the liquid inlet pipe 2 is 10° to 65°. In a specific implementation, the angle between the axis of each cylindrical part 102 and the axis of the liquid inlet pipe 2 can be 30 degrees; the diameter of each cylindrical part 102 is 5cm to 12.5cm, specifically 9cm; the thickness of the main part 101 in the first direction X is 0.5 to 0.85 times the diameter of each cylindrical part 102. The thickness dimension of the main part 101 in the first direction X is smaller than the diameter dimension of the cross section of each cylindrical part 102, so as to ensure that the flow inlet area of ​​the glass liquid is an area with a larger cross-sectional area, so that the glass liquid can flow from the cylindrical part 102 with a larger cross-sectional area into the main part 101 with a relatively smaller cross-sectional area, so as to control the flow rate of the glass liquid in the outlet area.

[0039] In some embodiments, refer to the attached Figure 1 To Attachment Figure 3 In a specific implementation, the angle between each guide plate 3 and the axis of the corresponding cylindrical portion 102 is 20° to 160°, and the guide plate 3 is an elliptical plate, a circular plate or a polygonal plate, and its thickness is 0.1 cm to 0.5 cm.

[0040] Specifically, in order to achieve the disturbing effect of the guide plate 3 on the glass liquid inside the cylindrical part 102, in the technical solution adopted by the present invention, the angle between each guide plate 3 and the axis of the corresponding cylindrical part 102 is 20° to 160°. The specific implementation method can be that each guide plate 3 and the axis of the corresponding cylindrical part 102 are perpendicular to each other, and the guide plate 3 can be an elliptical plate, a circular plate or a polygonal plate, and its thickness is 0.1cm to 0.5cm, specifically 0.35cm, so that each guide plate 3 has a better disturbing effect.

[0041] In some embodiments, in a specific implementation, when the guide plate 3 is a square plate, the length of each guide plate 3 is 1 to 1.6 times the diameter of each cylindrical portion 102 , and the width of each guide plate 3 is 0.6 to 0.95 times the diameter of each cylindrical portion 102 .

[0042] Specifically, in order to achieve the disturbing effect of the guide plate 3 on the glass liquid inside the cylindrical part 102, in the technical solution adopted by the present invention, the guide plate 3 can be a square plate in a specific implementation, and the length of each guide plate 3 is 1 to 1.6 times the diameter of the cross section of each cylindrical part 102, and the width of each guide plate 3 is 0.6 to 0.95 times the diameter of the cross section of each cylindrical part 102.

[0043] In some embodiments, refer to the attached Figure 1 To Attachment Figure 3In a specific implementation, there are four guide plates 3 , which are respectively arranged at 1 / 2 and 3 / 4 of the length of the two cylindrical parts 102 .

[0044] Specifically, in order to achieve the disturbing effect of the guide plate 3 on the glass liquid inside the cylindrical part 102, in the technical solution adopted by the present invention, the number of the guide plates 3 can be four, and each cylindrical part 102 is respectively provided with two guide plates 3. According to the computer simulation analysis of fluid mechanics structure, it can be known that the first guide plate 3 is set at 1 / 2 of the total length of the cylindrical part 102, which is the initial disturbing zone of each cylindrical part 102, and the second guide plate 3 is set at 3 / 4 of the total length of the cylindrical part 102, which is the flow convection zone of each cylindrical part 102.

[0045] In some embodiments, refer to the attached Figure 4 In a specific implementation, each guide plate 3 is provided with a guide hole or a guide groove; the guide hole is a plurality of evenly arranged circular holes or polygonal holes, and the total area of ​​the guide holes is 0.1 to 0.5 times the cross-sectional area of ​​each cylindrical portion 102; the guide groove is an evenly arranged polygonal groove or a hyperbolic groove, and the total area of ​​the guide groove is 0.1 to 0.4 times the cross-sectional area of ​​each cylindrical portion 102.

[0046] Specifically, in order to achieve a better spoiler effect on the guide plate 3, in the technical solution adopted by the present invention, a guide hole or a guide groove can be provided on each guide plate 3. When a guide hole is provided on the guide plate 3, the style of the guide hole can be a number of evenly provided circular holes or polygonal holes, and the total area of ​​the guide holes on each guide plate 3 is 0.1 to 0.5 times the cross-sectional area of ​​the cylindrical part 102; when a guide groove is provided on the guide plate 3, the style of the guide groove can be a polygonal groove or a hyperbolic groove with a regular shape, and the total area of ​​the guide groove on each guide plate 3 is 0.1 to 0.4 times the cross-sectional area of ​​the cylindrical part 102. When the high-temperature glass liquid flows near the guide plate 3, the guide hole or the guide groove can further produce a spoiler effect on the local glass liquid, thereby forming convection near the guide hole or the guide groove that can accelerate the local flow velocity, further improving the local spoiler effect of the guide plate 3 on the glass liquid.

[0047] In some embodiments, refer to the attached Figure 1 and attached Figure 2 In a specific implementation, the drawing trough device also includes: a heating and temperature control device 5, which is installed on the outer wall of the drawing trough body 1 and is electrically connected to at least two guide plates 3, and is used to heat the glass liquid inside the drawing trough body 1 and control the temperature of at least two guide plates 3.

[0048] Specifically, in order to achieve the ability to heat the drawing trough body 1 and control the temperature of the guide plate 3, in the technical solution adopted by the present invention, a heating and temperature control device 5 is provided in the drawing trough device, which can heat the drawing trough body 1 and control the temperature of the guide plate 3. The rated output current of the heating and temperature control device 5 is 2A to 10A, and the rated output voltage is 1kV to 10kV to meet the parameter requirements of heating and temperature control.

[0049] In some embodiments, refer to the attached Figure 1 and attached Figure 2 In a specific implementation, the heating and temperature control device 5 includes: a heating component 501, which is installed on the outer wall of the main body 101 and is used to heat the glass liquid inside the drawing tank body 1; and a temperature control component 502, which is electrically connected to the part of at least two guide plates 3 located outside the accommodating space 103 and is used to control the temperature of at least two guide plates 3.

[0050] Specifically, in order to realize that the heating and temperature control device 5 has heating and temperature control functions, in the technical solution adopted by the present invention, the heating and temperature control device 5 includes two parts: a heating component 501 and a temperature control component 502. The heating component 501 is installed on the outer wall of the main part 101, and is specifically a metal plate that can be heated by electric current. Specifically, it can be made of metal platinum or platinum alloy material. The heating component 501 can heat the entire drawing tank body, and then realize heating the glass liquid inside the accommodating space 103 to prevent the local temperature of the glass liquid from being too low, resulting in poor glass ribbon forming quality. The temperature control component 502 is arranged above the heating component 501, and a number of connecting terminals corresponding to the number of guide plates 3 are arranged on the temperature control component. The guide plate 3 can be electrically connected to the connecting terminals on the temperature control component 502 through locking nuts and wires, so that the temperature of the guide plate 3 can be controlled by the temperature control component 502 to prevent the glass liquid from having a cold surface or cold spot due to the local temperature of the guide plate 3 being too low, thereby affecting the glass ribbon forming quality.

[0051] In some embodiments, refer to the attached Figure 2 and attached Figure 3 In a specific implementation, the slit groove 4 is provided with a guide portion 401 protruding longitudinally from the bottom of the main body portion 101 , for guiding the glass liquid flowing out of the slit groove 4 .

[0052] Specifically, in order to achieve a more uniform distribution of pressure and flow rate of the glass liquid flowing out of the slit groove, in the technical solution adopted by the present invention, a guide portion 401 is provided around the slit groove 4 and is protruding along the longitudinal direction relative to the bottom of the main body portion 101. When the glass liquid in the accommodating space 103 flows out through the slit groove 4, the guide portion 401 can guide the glass liquid flowing out of the slit groove 4, so that the pressure and flow rate of the flowing glass liquid are more uniform, so as to improve the quality of the finished ultra-thin glass strip.

[0053] In some embodiments, in a specific implementation, the drawing tank body 1, the liquid inlet pipe 2 and at least two guide plates 3 are all made of metal platinum or platinum alloy that is resistant to high temperatures and has good stability.

[0054] Specifically, in order to achieve high temperature resistance and high stability of the drawing trough device, in the technical solution adopted by the present invention, the materials of the drawing trough body 1, the liquid inlet pipe 2 and at least two guide plates 3 can be selected from metal platinum or platinum alloys with good high temperature stability, such as Umicore or Tanaka materials, specifically T-1Pt, PtRh10, PtRh20, nanoplatTMPt, PtAu5 and other materials.

[0055] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0056] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A drawing groove device, characterized in that: include: A drawing slot body (1) comprises: a main body (101) and two cylindrical parts (102), wherein the top side of the main body (101) forms two symmetrical inclined shoulders, the two cylindrical parts (102) are arranged on the inclined shoulders and communicate with the main body (101) to form an accommodating space (103), and the thickness of the main body (101) in a first direction (X) is smaller than the diameter of each of the cylindrical parts (102); A liquid inlet pipe (2), arranged between the two inclined shoulders of the main body (101), connected to the two cylindrical parts (102) to communicate with the accommodating space (103), and used for injecting glass liquid into the accommodating space (103); At least two guide plates (3) are symmetrically arranged on the two cylindrical parts (102), a part of each guide plate (3) is located inside the accommodating space (103), and the other part is located outside the accommodating space (103); each guide plate (3) is provided with a guide hole or a guide groove; the guide hole is a plurality of evenly arranged circular holes or polygonal holes, and the guide groove is an evenly arranged polygonal groove or a hyperbolic groove; and A slit groove (4) is longitudinally formed at the bottom of the main body (101) and extends along the second direction (Y); The first direction (X) and the second direction (Y) are perpendicular to each other and perpendicular to the longitudinal direction respectively.

2. The drawing groove device according to claim 1, characterized in that: The angle between the axis of each cylindrical portion (102) and the axis of the liquid inlet pipe (2) is 10° to 65°; The diameter of each of the cylindrical parts (102) is 5 cm to 12.5 cm, and the thickness of the main body part (101) in the first direction (X) is 0.5 to 0.85 times the diameter of each of the cylindrical parts (102).

3. The drawing groove device according to claim 1, characterized in that: The angle between each guide plate (3) and the axis of the corresponding cylindrical portion (102) is 20° to 160°, and the guide plate (3) is an elliptical plate, a circular plate or a polygonal plate, and has a thickness of 0.1 cm to 0.5 cm.

4. The drawing groove device according to claim 3, characterized in that: When the guide plates (3) are square plates, the length of each guide plate (3) is 1 to 1.6 times the diameter of each cylindrical portion (102), and the width of each guide plate (3) is 0.6 to 0.95 times the diameter of each cylindrical portion (102).

5. The drawing groove device according to claim 1, characterized in that: The number of the guide plates (3) is four, which are respectively arranged at 1 / 2 and 3 / 4 of the length of the two cylindrical parts (102).

6. The drawing groove device according to claim 1, characterized in that: The total area of ​​the guide holes is 0.1 to 0.5 times the cross-sectional area of ​​each of the cylindrical parts (102); The total area of ​​the guide grooves is 0.1 to 0.4 times the cross-sectional area of ​​each of the cylindrical portions (102).

7. The drawing groove device according to claim 1, characterized in that: Also includes: A heating and temperature control device (5) is installed on the outer wall of the drawing trough body (1) and is electrically connected to the at least two guide plates (3), and is used to heat the glass liquid inside the drawing trough body (1) and to control the temperature of the at least two guide plates (3).

8. The drawing groove device according to claim 7, characterized in that: The heating temperature control device (5) comprises: A heating assembly (501) is mounted on the outer wall of the main body (101) and is used to heat the glass liquid inside the drawing tank body (1); and A temperature control component (502) is electrically connected to the portion of the at least two guide plates (3) located outside the accommodating space (103), and is used to control the temperature of the at least two guide plates (3).

9. The drawing groove device according to claim 1, characterized in that: The slit groove (4) is provided with a guide portion (401) protruding longitudinally from the bottom of the main body portion (101) and used for guiding the glass liquid flowing out of the slit groove (4).

10. The drawing groove device according to claim 1, characterized in that: The drawing tank body (1), the liquid inlet pipe (2) and the at least two guide plates (3) are all made of high-temperature resistant and highly stable metal platinum or platinum alloy.

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