阅读说明：本技术 一种适合拉制柔性玻璃的铂铑合金漏板 (Platinum-rhodium alloy bushing plate suitable for drawing flexible glass ) 是由 郭振强 袁坚 王瑞璞 淮旭光 王兵兵 何聪 李诗文 于 2019-10-22 设计创作，主要内容包括：本发明公开了一种适合拉制柔性玻璃的铂铑合金漏板,属于柔性玻璃成型设备技术领域,铂铑合金漏板包括槽体,槽体的底部开设有用来通过玻璃液的狭缝,狭缝的长度方向与槽体的长度方向相同,关键在于：位于狭缝两侧的槽体的侧板都是包括上弧形板和下斜板,上弧形板的开口朝向槽体内部,下斜板的上端与上弧形板连接、下端向另一个下斜板方向倾斜,两个下斜板下端之间的间隙形成为狭缝。上弧形板具有较大的加热面积,可以促使玻璃液粘度趋于一致,上弧形板与下斜板相连,结构稳定,使狭缝的变形率小于等于0.50％。本发明的漏板结构稳定,温度加热均匀,可拉制0.06mm以上的柔性玻璃,生产的玻璃薄厚差控制在±15μm范围内。(The invention discloses a platinum-rhodium alloy bushing plate suitable for drawing flexible glass, which belongs to the technical field of flexible glass forming equipment and comprises a groove body, wherein the bottom of the groove body is provided with a slit used for glass liquid to pass through, the length direction of the slit is the same as that of the groove body, and the key points are as follows: the side plates of the groove body positioned on two sides of the slit comprise an upper arc-shaped plate and a lower inclined plate, the opening of the upper arc-shaped plate faces the inside of the groove body, the upper end of the lower inclined plate is connected with the upper arc-shaped plate, the lower end of the lower inclined plate inclines towards the direction of the other lower inclined plate, and a gap between the lower ends of the two lower inclined plates is formed into the slit. The upper arc-shaped plate has a larger heating area, so that the viscosity of the molten glass tends to be consistent, the upper arc-shaped plate is connected with the lower inclined plate, the structure is stable, and the deformation rate of the slit is less than or equal to 0.50%. The bushing plate has stable structure and uniform temperature heating, can draw flexible glass with the thickness of more than 0.06mm, and controls the thickness difference of the produced glass within the range of +/-15 mu m.)

1. The utility model provides a be fit for drawing platinum rhodium bushing of flexible glass, includes cell body (1), and slit (2) that are used for passing through glass liquid are seted up to the bottom of cell body (1), and the length direction of slit (2) is the same with the length direction of cell body (1), its characterized in that: the side plates of the groove body (1) positioned at two sides of the slit (2) comprise an upper arc-shaped plate (1-1) and a lower inclined plate (1-2), the opening of the upper arc-shaped plate (1-1) faces the inside of the groove body (1), the upper end of the lower inclined plate (1-2) is connected with the upper arc-shaped plate (1-1), the lower end of the lower inclined plate (1-2) inclines towards the direction of the other lower inclined plate (1-2), and a gap between the lower ends of the two lower inclined plates (1-2) is formed into the slit (2).

2. A platinum rhodium bushing suitable for drawing flexible glass as claimed in claim 1, wherein: the horizontal distance between the two upper arc-shaped plates (1-1) is gradually reduced from top to bottom to form a semicircular structure.

3. A platinum rhodium bushing suitable for drawing flexible glass as claimed in claim 1, wherein: the lower parts of the two ends of the slit (2) are provided with the plate root generators (3), the plate root generators (3) at each end are of U-shaped structures with openings facing the other ends, and the arc-shaped inner walls of the U-shaped structures are directly contacted with the end parts of the glass belts (5) flowing out of the slit (2) to form plate root flow guide surfaces.

4. A platinum rhodium bushing suitable for drawing flexible glass as claimed in claim 1, wherein: the width of the outlet end of the slit (2) is gradually increased from top to bottom to form a hole expanding structure.

5. A platinum rhodium bushing suitable for drawing flexible glass as claimed in claim 1, wherein: the width of the slit (2) is 0.1-0.35 cm.

6. A platinum rhodium bushing suitable for drawing flexible glass as claimed in claim 1, wherein: the upper arc-shaped plate (1-1) is of an arc-shaped structure made of a plate with the thickness of 0.1-0.3cm, and the lower inclined plate (1-2) is of a plate-shaped structure made of a plate with the thickness of 0.2-0.4 cm.

7. A platinum rhodium bushing suitable for drawing flexible glass as claimed in claim 1, wherein: the lower end faces of the groove bodies (1) positioned at the two sides of the slit (2) are inclined upwards, and the included angle alpha between the lower end faces of the slit (2) and the groove bodies is 90-150 degrees.

8. A platinum rhodium bushing suitable for drawing flexible glass as claimed in claim 1, wherein: the side plates of the groove body (1) positioned at the two sides of the slit (2) are symmetrically arranged along the slit (2), and the included angle beta between the lower inclined plates (1-2) of the two side plates is 25-60 degrees.

9. A platinum rhodium bushing suitable for drawing flexible glass as claimed in claim 1, wherein: the outer walls of the two ends of the tank body (1) are provided with electrode ears (4), and the electrode ears (4) are connected with the transformer by means of soft copper bars or hard copper bars.

10. A platinum rhodium bushing suitable for drawing flexible glass as claimed in claim 1, wherein: the platinum accounts for 80-90% of the weight of the plate of the platinum-rhodium alloy bushing, and the balance is rhodium.

Technical Field

The invention belongs to the technical field of flexible glass forming equipment, relates to a bushing, and particularly relates to a platinum-rhodium alloy bushing suitable for drawing flexible glass.

Background

The flexible glass is ultrathin glass with the thickness of less than or equal to 0.1mm and capable of realizing a roll-to-roll process. Flexible glass can be bent while having the hardness, transparency, heat resistance, electrical insulation, gas impermeability, and mechanical and chemical properties of glass that are stable in oxidizing and light environments. The high temperature resistance of the flexible glass can meet the requirement that part of optoelectronic devices need to be subjected to high temperature treatment, and the outstanding bending property and winding property of the flexible glass enable the continuous roll-to-roll printing process to be adopted to prepare various optoelectronic devices, so that the flexible glass is a preferable base material of the future flexible printing optoelectronic devices and can possibly cause the essential revolution and leap of the flexible display and solar cell industries.

Several glass companies around the world have exhibited flexible glass samples and have formed a technical monopoly. In recent years, China has developed a lot in the aspect of ultrathin plate glass, but research and development of flexible glass are not carried out yet, independent innovation is needed, and research and development force is rapidly put into and increased.

The current methods for producing flexible glass include float process, overflow process, secondary drawing process and slit down-draw process. In the float process, the glass liquid floating on the tin liquid is thinned by adopting an edge roller, and due to the action of surface tension, the difficulty of thinning the glass in the horizontal direction is very high. The overflow method is that homogeneous glass liquid flows into an overflow groove, overflows from two sides and flows down along side bricks to be converged into a glass plate, the thickness of the plate root of the overflow method is as high as 1cm, and the plate root is difficult to be thinned to be less than 0.1mm by a drawing device. The secondary drawing method is to reheat the glass original sheet and draw and thin the glass by a drawing roller, and the secondary drawing method can draw flexible glass with the thickness less than 0.1mm, but the secondary drawing method cannot realize continuous production due to process limitation, and is difficult to realize industrialization. The slit down-draw method is characterized in that homogeneous glass liquid melted in a forming chamber is heated by a platinum-rhodium alloy bushing plate and then flows out of a slit, and then a glass plate is drawn under the control of a drawing roller.

However, in the experimental process of the slit down-draw method, it is found that the structural design of the platinum-rhodium bushing is not reasonable, so that the viscosity difference of molten glass is large, and the slit is easy to deform.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and designs the platinum-rhodium alloy bushing suitable for drawing the flexible glass, and the side plates of the bushing adopt the structures of the upper arc-shaped plate and the lower V-shaped plate, so that the temperature of glass liquid in the bushing groove can be fully adjusted, and the transverse viscosity of the glass liquid tends to be consistent.

The invention adopts the specific technical scheme that: the utility model provides a be fit for drawing flexible glass's platinum rhodium bushing, includes the cell body, and the slit that is used for passing through glass liquid is seted up to the bottom of cell body, and the length direction of slit is the same with the length direction of cell body, and the key lies in: the side plates of the groove body positioned on two sides of the slit comprise an upper arc-shaped plate and a lower inclined plate, the opening of the upper arc-shaped plate faces the inside of the groove body, the upper end of the lower inclined plate is connected with the upper arc-shaped plate, the lower end of the lower inclined plate inclines towards the direction of the other lower inclined plate, and a gap between the lower ends of the two lower inclined plates is formed into the slit.

The horizontal distance between the two upper arc-shaped plates is gradually reduced from top to bottom to form a semicircular structure.

The lower parts of two ends of the slit are provided with the plate root generators, the plate root generators at each end are U-shaped structures with openings facing the other ends, and the arc-shaped inner walls of the U-shaped structures are directly contacted with the end parts of the glass strips flowing out from the slit to form plate root guide surfaces.

The width of the outlet end of the slit is gradually increased from top to bottom to form a hole expansion structure.

The width of the slit is 0.1-0.35 cm.

The upper arc-shaped plate is of an arc-shaped structure made of a plate with the thickness of 0.1-0.3cm, and the lower inclined plate is of a plate-shaped structure made of a plate with the thickness of 0.2-0.4 cm.

The lower end faces of the groove bodies positioned at two sides of the slit are inclined upwards, and the included angle alpha between the lower end faces of the groove bodies and the lower end face of the slit is 90-150 degrees.

The side plates of the groove body positioned at the two sides of the slit are symmetrically arranged along the slit, and the included angle beta between the lower inclined plates of the two side plates is 25-60 degrees.

The outer walls of the two ends of the tank body are provided with electrode ears, and the electrode ears are connected with the transformer by means of soft copper bars or hard copper bars.

The platinum accounts for 80-90% of the weight of the plate of the platinum-rhodium alloy bushing, and the balance is rhodium.

The invention has the beneficial effects that: each side plate of the groove body comprises an upper arc plate and a lower inclined plate, the opening of the upper arc plate faces the inside of the groove body, the upper end of the lower inclined plate is connected with the upper arc plate, the lower end of the lower inclined plate inclines towards the direction of the other lower inclined plate to form a V-shaped structure, the upper arc plate has a large heating area, the viscosity of glass liquid can be enabled to be consistent, the upper arc plate is connected with the lower inclined plate, the structure is stable, and the deformation rate of a slit is smaller than or equal to 0.50%. The bushing plate has stable structure and uniform temperature heating, can draw flexible glass with the thickness of more than 0.06mm, and controls the thickness difference of the produced glass within the range of +/-15 mu m.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is an enlarged view of a in fig. 2.

Fig. 4 is a schematic structural diagram of the plate root generator in the present invention.

Fig. 5 is a schematic structural view of the present invention in a specific use.

In the drawing, 1 represents a trough body, 1-1 represents an upper arc-shaped plate, 1-2 represents a lower inclined plate, 1-3 represents a plug, 2 represents a slit, 3 represents a plate root generator, 4 represents an electrode ear, 5 represents a glass belt, 6 represents a forming chamber, 7 represents a traction roller, 8 represents a positioning plate, and 9 represents a guide roller.

Detailed Description

The invention is described in detail below with reference to the following figures and specific embodiments: