阅读说明：本技术 一种光学防眩光玻璃及其加工方法 (Optical anti-glare glass and processing method thereof ) 是由 张丰刚 唐响 于 2020-06-24 设计创作，主要内容包括：本发明属于光学玻璃技术领域,具体涉及一种光学防眩光玻璃及其加工方法,所述的加工方法包括对玻璃原片先进行喷砂处理,使其粗糙度为0.1-2.0μm；然后将喷砂处理后的玻璃原片放入到研磨抛光机中,采用抛光液进行抛光处理,得到所述的光学防眩光玻璃；所述的抛光液中含有粒径为0.7-1.0μm的抛光粉；本发明先采用喷砂处理的方式在玻璃原片上形成凹凸不平的结构,然后再配合特定工艺条件的研磨处理,消除玻璃表面凹凸的一些微观锐角,使得玻璃表面变得通透；基于本发明提供的上述加工方法,不仅良率稳定,制程简单,有效的降低了产品的制作成本,还避免了传统的化学蚀刻工艺对强酸的使用,减少了对周围环境的影响,降低了工人的操作风险。(The invention belongs to the technical field of optical glass, and particularly relates to optical anti-glare glass and a processing method thereof, wherein the processing method comprises the steps of carrying out sand blasting treatment on a glass original sheet to ensure that the roughness of the glass original sheet is 0.1-2.0 mu m; then putting the glass original sheet subjected to sand blasting into a grinding and polishing machine, and performing polishing treatment by adopting polishing solution to obtain the optical anti-glare glass; the polishing solution contains polishing powder with the grain diameter of 0.7-1.0 μm; the invention firstly adopts a sand blasting way to form an uneven structure on a glass original sheet, and then is matched with grinding treatment under specific process conditions to eliminate some microscopic acute angles of the unevenness on the glass surface, so that the glass surface becomes transparent; the processing method provided by the invention has the advantages of stable yield, simple process, effective reduction of the manufacturing cost of the product, avoidance of the use of strong acid in the traditional chemical etching process, reduction of the influence on the surrounding environment and reduction of the operation risk of workers.)

1. The processing method of the optical anti-glare glass is characterized by comprising the steps of carrying out sand blasting treatment on a glass original sheet to ensure that the roughness is 0.1-2.0 mu m;

then putting the glass original sheet subjected to sand blasting into a grinding and polishing machine, and performing polishing treatment by adopting polishing solution to obtain the optical anti-glare glass;

the polishing solution contains polishing powder with the grain diameter of 0.7-1.0 μm.

2. The method for processing optical anti-glare glass according to claim 1, wherein the conditions of the sand blasting include: the distance between the nozzle and the glass sheet is 20-25 cm;

The air pressure of the spray gun is 2-3kg/cm²。

3. The method of claim 1, wherein the polishing solution is a mixture of polishing powder and water at a weight ratio of 1: 4.

4. the method of claim 1, wherein the equipment for sand blasting comprises:

a frame (10);

the tray mechanism (20) is arranged on the rack (10) and is used for supporting the glass sheet to be subjected to sand blasting;

the spray gun horizontal moving mechanism (30) is arranged above the tray mechanism (20), and a spray gun (31) is arranged on the spray gun horizontal moving mechanism (30) and is used for carrying out sand blasting treatment on the glass sheet placed on the tray mechanism (20);

a first sand storage box (11) arranged on the frame (10) and used for supplying materials to the spray gun (31);

the sand separating unit (40) is arranged beside the rack (10), and the sand separating unit (40) comprises a cyclone separator (41) and a vibrating screen (42) arranged below the cyclone separator (41);

wherein, a material collecting device (12) is arranged below the tray mechanism (20) and is used for collecting waste sand materials and conveying the waste sand materials to the cyclone separator (41) through a conveying pipe (13);

and a conveying unit is arranged between the vibrating screen (42) and the first sand storage box (11) and is used for conveying the screened sand materials to the first sand storage box (11) for recycling.

5. The method for processing an anti-glare optical glass according to claim 4, further comprising:

and the dry dust removal system (50) is arranged beside the sand separation unit (40) and is used for removing dust generated when the vibrating screen (42) performs vibrating screening.

6. The method for processing anti-glare optical glass according to claim 5, wherein the dry dedusting system (50) comprises:

a body (51);

the centrifugal fan (52) is arranged on the machine body (51) and used for providing power;

the high-efficiency filter element (53) is provided with a plurality of filter elements and is vertically arranged in the machine body (51);

the back flushing filter element mechanism (54) is arranged above the high-efficiency filter element (53), and the back flushing filter element mechanism (54) comprises an air storage tank, a pulse electromagnetic valve and an air pipe;

a dust collection hopper car (55) disposed below the body (51) for collecting dust;

wherein, the centrifugal fan (52) provides power to suck dust generated by screening sand materials by the vibrating screen (42) into the high-efficiency filter element (53) for filtering, and the dust is discharged into the dust collecting hopper car (55) under the action of the back flushing filter element mechanism (54).

7. The processing method of the optical anti-glare glass according to claim 4, wherein the tray mechanism (20) is a supporting plate arranged on the frame (10), and the supporting plate is provided with through holes (201) penetrating through the plate surface and arranged at intervals.

8. The processing method of the anti-glare optical glass according to claim 4, wherein the tray mechanism (20) comprises a plurality of parallel rollers arranged at intervals, two shaft ends of the rollers are rotatably arranged on the frame (10) through bearings, and conveying rollers are arranged on shaft bodies of the rollers to form a bearing surface for supporting the glass original sheet,

the end part of the rolling shaft is also provided with a transmission component which is in transmission connection with the motor.

9. The method for processing anti-glare optical glass according to claim 4, wherein the horizontal movement mechanism (30) of the spray gun comprises:

two Y-axis guide rails (301) are arranged and arranged in parallel at intervals;

the two ends of the X-axis guide rail (302) are movably arranged on the Y-axis guide rail (301);

a mounting seat (303) movably arranged on the X-axis guide rail (302);

and the spray gun (31) is arranged on the mounting seat (303) in a vertically movable mode.

10. An optical anti-glare glass processed according to the method of any one of claims 1 to 9.

Technical Field

The invention belongs to the technical field of optical glass, and particularly relates to optical anti-glare glass and a processing method thereof.

Background

The principle of the anti-glare glass, also called anti-reflection glass or AG glass, is that the double-side or single-side of a glass sheet is specially processed, so that the light-reflecting surface of the glass is changed into a matte non-reflecting surface, and compared with common glass, the anti-glare glass has lower reflectance, and the light reflectance is reduced from 8% to below 1%. The anti-glare glass is generally used in the fields of PDP plasma televisions, PTV rear projection televisions, DLP television splicing walls, touch screens, television splicing walls, flat panel televisions, rear projection televisions, liquid crystal display industrial instruments, high-grade photo frames and the like.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a processing method of optical anti-glare glass.

In order to achieve the purpose, the invention adopts the following technical scheme:

a processing method of optical anti-glare glass comprises the steps of carrying out sand blasting treatment on a glass original sheet to enable the roughness of the glass original sheet to be 0.1-2.0 mu m;

then putting the glass original sheet subjected to sand blasting into a grinding and polishing machine, and performing polishing treatment by adopting polishing solution to obtain the optical anti-glare glass;

the polishing solution contains polishing powder with the grain diameter of 0.7-1.0 μm.

The invention also provides the optical anti-glare glass processed by the method.

Compared with the prior art, the invention has the following technical effects:

the processing method of the optical anti-glare glass provided by the invention comprises the steps of firstly forming an uneven structure on an original glass sheet in a sand blasting way, and then, matching with grinding treatment under specific process conditions, eliminating some microscopic acute angles of the unevenness on the surface of the glass, so that the surface of the glass becomes transparent; the processing method provided by the invention has the advantages of stable yield, simple process, effective reduction of the manufacturing cost of the product, avoidance of the use of strong acid in the traditional chemical etching process, reduction of the influence on the surrounding environment and reduction of the operation risk of workers.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

FIG. 1 is a schematic view showing the structure of an apparatus for blasting according to an embodiment of the present invention;

FIG. 2 shows a schematic structural view of the sand separating unit in FIG. 1;

FIG. 3 shows a cross-sectional view of the dry dusting system of FIG. 1;

FIG. 4 is a schematic diagram illustrating the arrangement of components in a dry dusting system according to an embodiment of the present invention;

fig. 5 shows a schematic structural diagram of a high-efficiency filter element provided according to an embodiment of the invention.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific embodiments and the attached drawings.

The invention provides a processing method of optical anti-glare glass, which comprises the steps of carrying out sand blasting treatment on a glass sheet to ensure that the roughness of the glass sheet is 0.1-2.0 mu m, then putting the glass sheet subjected to sand blasting treatment into a grinding and polishing machine, and carrying out polishing treatment by adopting polishing solution to obtain the optical anti-glare glass; the polishing solution contains polishing powder with the grain diameter of 0.7-1.0 μm.

In the invention, the glass sheet for processing the optical anti-glare glass can adopt optical glass with the thickness of 0.33 mm-6.0 mm, the common specification on the market at present is 1.22 m multiplied by 2.44 m, and other specifications can be selected according to the size of the required product.

According to the technical scheme provided by the invention, the uneven structure is formed on the glass sheet in a sand blasting way, and then grinding treatment is carried out under the matching of a specific process condition, so that some microscopic acute angles of the unevenness on the surface of the glass sheet are eliminated, the surface of the glass sheet is transparent, and the anti-glare purpose is realized. Moreover, the processing method of the optical anti-glare glass provided by the invention has the advantages of stable yield, simple process, effective reduction of the manufacturing cost of anti-glare glass products, avoidance of the use of strong acid in the traditional chemical etching process, reduction of the influence on the surrounding environment, reduction of the construction risk of workers and better application prospect.

Further, according to the present invention, the blasting is performed to form an uneven structure on the surface of the glass original sheet to increase roughness, and the blasting is performed under conditions that are too severe to ensure formation of the uneven structure, but at a higher cost and with greater damage to the glass original sheet, and it is preferable that the distance from the nozzle to the glass original sheet is 20 to 25cm and the pressure of the blasting gun is 2 to 3kg/cm in the specific blasting process of the present invention ². Through carrying out sand blasting under this condition, both avoided causing serious damage to former piece of glass, formation unevenness's that again can be fast and stable structure is in order to satisfy the requirement of roughness.

In the present invention, the polishing treatment is to polish the microscopic acute angle generated by the sand blasting in the previous step so as to make the appearance of the glass sheet transparent, and the weight ratio of the polishing powder to water in the polishing solution can be selected from a wide range, and preferably, the weight ratio of the polishing powder to water is 1: 4.

in the present invention, the specific components of the polishing powder used in the polishing treatment process are not particularly limited, and may be those commonly used by those skilled in the art, such as cerium oxide.

In the invention, the equipment used for sand blasting is equipment independently developed by the inventor of the application, the equipment for sand blasting belongs to micro powder sand blasting equipment, and can be specially used for production and processing of anti-glare glass, sand materials made of different materials with 200-mesh sand blasting and 1200-mesh sand blasting are specially used, the surface warping degree of the glass sheet after sand blasting can be ensured within 3 per thousand of the length, and the surface roughness of the glass sheet after sand blasting is ensured within +/-5%.

Specifically, the equipment for sand blasting comprises a frame 10, a tray mechanism 20, a spray gun horizontal moving mechanism 30, a first sand storage box 11 and a sand separating unit 40; the frame 10 mainly serves as a support for fixedly supporting the parts such as the tray mechanism 20, the horizontal movement mechanism 30 of the spray gun, and the first sand tank 11.

The tray mechanism 20 is arranged on the frame 10 and used for supporting a glass sheet to be subjected to sand blasting;

the spray gun horizontal moving mechanism 30 is arranged above the tray mechanism 20, and a spray gun 31 is arranged on the spray gun horizontal moving mechanism 30 and is used for carrying out sand blasting treatment on the glass sheet placed on the tray mechanism 20; the first sand storage box 11 is arranged on the frame 10 and is used for supplying materials to the spray gun 31; the sand separating unit 40 is arranged beside the frame 10, and the sand separating unit 40 comprises a cyclone separator 41 and a vibrating screen 42 arranged below the cyclone separator 41;

wherein, a material collecting device 12 is arranged below the tray mechanism 20 and used for collecting waste sand materials and conveying the waste sand materials to the cyclone separator 41 through a conveying pipe 13;

a conveying unit is arranged between the vibrating screen 42 and the first sand storage box 11 and is used for conveying the screened sand materials to the first sand storage box 11 for recycling.

In the specific working process, the glass original sheet to be subjected to sand blasting is placed on the tray mechanism 20, sand is pre-filled into the first sand storage box 11, the corresponding driving assembly is started to enable the spray gun horizontal moving mechanism 30 to move in the horizontal direction, negative pressure formed by high-speed flowing of compressed gas in the spray gun 31 is utilized to generate an injection effect, the sand in the first sand storage box 11 is sucked into the spray gun 31, and the sand is sprayed to the surface of the glass original sheet at high speed along with the compressed air through the spray nozzle, so that the aim of sand blasting is fulfilled. When the glass sheet is in a working state, the compressed air and the sand material are mixed and sprayed at the same time, so that the compressed air is fully utilized, the flow rate of the compressed air and the flow rate of the sand material are convenient to adjust, an ideal mixing ratio can be obtained, and the required roughness can be obtained by sand blasting on the surface of the glass sheet.

The waste sand produced in the sand blasting process falls into the collecting device 12 below the tray mechanism 20 and is conveyed to the cyclone separator 41 through the conveying pipe 13, impurities in the sand are removed after the vibration screening treatment of the vibration screen 42, and then the sand is conveyed to the first sand storage box 11 through the conveying unit to be recycled.

In the invention, the vibrating screen 42 is used for removing impurities in sand materials, preferably, the vibrating screen 42 can adopt an S49-1000 type, the outer diameter is 970mm, the noise is less than or equal to 90dB (A), the single-layer screening filtration can be realized, the corresponding screen mesh specification can be replaced according to different sand material requirements, the frame of the vibrating screen 42 is formed by welding high-quality section bars, the local reinforcement is realized, and the strength is ensured.

More specifically, in a specific embodiment of the present invention, the collecting device 12 includes a set of transverse screw conveying devices, and the transverse screw conveying devices specifically include a conveying screw shaft, a cylinder, a motor and a bearing; the conveying screw shaft collects waste sand generated in the sand blasting process and sucks the waste sand into the cyclone separator 41 by negative pressure generated by the cyclone separator 41 to complete gas-solid separation.

In the present invention, as a specific embodiment of the conveying means, the conveying means includes a bucket elevator for lifting the sand after the sieving treatment by the vibrating screen 42 and conveying the sand after the sieving treatment into the first sand storage tank 11 by the upper screw conveying mechanism. Specifically, the bucket elevator adopts a flat belt for transmission, the unloading mode is centrifugal unloading, in order to guarantee the service life, the bucket on the flat belt adopts a wear-resistant material of a special process, and the tensioning mechanism of the flat belt of the bucket elevator adopts a lead screw to be tensioned vertically and upwards, so that the adjustable range of the tensioning amount is large, and the tensioning is stable and reliable. In addition, the bucket elevator is provided with an upper, middle and lower access hole, so that the installation and replacement of a flat belt and a bucket are facilitated, the feeding hole and the lower access hole are combined, when the bucket elevator is blocked due to excessive sand addition, the lower access hole can be opened for clearing, the feeding hole and the vibrating screen discharging hole are made of soft rubber pipes, and the discharging hole is connected with the first sand storage box 11 through a flange.

In the invention. The sand used in the sand blasting process can be white corundum of 400# to 800# specifically.

Further, according to the present invention, in order to effectively reduce the dust problem generated during the sand recovery process, the equipment for sand blasting further comprises a dry dust removal system 50, wherein the dry dust removal system 50 is disposed beside the sand separating unit 40 and is used for removing the dust generated during the vibrating and screening of the vibrating screen 42.

More specifically, the dry dust removal system 50 includes a machine body 51, a centrifugal fan 52, a high-efficiency filter element 53, a blowback filter element mechanism 54 and a dust collection hopper car 55; wherein, the centrifugal fan 52 is arranged on the body 51 and used for providing power; the high-efficiency filter element 53 is provided with a plurality of filter elements and is vertically arranged in the machine body 51; the back flushing filter element mechanism 54 is arranged above the high-efficiency filter element 53, and the back flushing filter element mechanism 54 comprises an air storage tank, a pulse electromagnetic valve and an air pipe; the dust collecting hopper 55 is arranged below the body 51 and used for collecting dust; the centrifugal fan 52 provides power to suck dust generated by screening sand by the vibrating screen 42 into the high-efficiency filter element 53 for filtering, and the dust is discharged into the dust collecting hopper car 55 under the action of the back-blowing filter element mechanism 54.

In the invention, the high-efficiency filter element can specifically select a special dust removal filter element (made of 100% polyester fiber material, with the thickness of 0.7mm, the air permeability of 1 μm, the air resistance of 30Pa and the highest temperature resistance of 80 ℃) for the American Tang-Nason brand, and the filtering efficiency is as follows: 99.99% of the particles are larger than 1.0 μm. It can effectively separate dust and gas, remove dust generated in the operation of the vibrating screen 42 and the cyclone separator 41, greatly reduce pollution to the environment, and has the advantages of low cost, high efficiency, and low costThe exhaust emission can reach the national environmental protection emission standard (GB/T16157-³。

In a specific embodiment of the present invention, the tray mechanism 20 is a supporting plate disposed on the frame 10, and the supporting plate is provided with through holes 201 penetrating through the plate surface and arranged at intervals. Therefore, in a specific working process, the original glass sheet to be subjected to sand blasting needs to be manually placed on the tray mechanism 20, then the horizontal moving mechanism 30 of the spray gun is started to perform sand blasting on the surface of the original glass sheet, and after the sand blasting process is completed, the original glass sheet is manually taken out.

In another specific embodiment of the present invention, the tray mechanism 20 includes a plurality of parallel rollers arranged at intervals, two shaft ends of the rollers are rotatably arranged on the frame 10 via bearings, and the shaft bodies of the rollers are provided with conveying rollers to form a bearing surface for supporting the glass sheet, and the ends of the rollers are further provided with transmission components in transmission connection with the motor. Further, the surface linear velocity of the conveying roller is 0.01-1.0 m/min. Therefore, the automatic feeding and discharging of the glass sheet can be realized, the operation is simple and convenient, and the labor input is reduced; meanwhile, the automatic feeding mode avoids errors possibly caused by continuous manual positioning when manual feeding is carried out.

In the present invention, the function of the spray gun horizontal moving mechanism 30 is to realize the automatic movement of the spray gun 31 in the horizontal direction and the movement in the vertical direction, that is, the direction close to or far from the tray mechanism 20, specifically, the spray gun horizontal moving mechanism 30 includes a Y-axis guide rail 301, an X-axis guide rail 302, a mounting seat 303 and the spray gun 31; two Y-axis guide rails 301 are arranged and arranged in parallel at intervals; the two ends of the X-axis guide rail 302 are movably arranged on the Y-axis guide rail 301; the mounting base 303 is movably arranged on the X-axis guide rail 302, and the spray gun 31 is vertically movably arranged on the mounting base 303. It should be noted that, in the present invention, the reciprocating manner of the X-axis guide rail 302 on the Y-axis guide rail 301 along the rail length direction thereof, the reciprocating manner of the mounting base 303 on the X-axis guide rail 302, and even the vertical reciprocating manner of the spray gun 31 on the mounting base 303 can adopt a driving manner commonly known by those skilled in the art, and the present invention is not described herein again.

In the present invention, the number of the spray guns 31 can be specifically designed according to actual needs, for example, 16 spray guns are configured, and the material of the spray guns is preferably aluminum alloy, specifically, such as model number BT-B; the nozzle is made of high-quality wear-resistant boron carbide, and the nozzle is characterized in that the nozzle channels are as follows: Particularly, each spray gun is independently controlled to be started, the required number of spray guns can be started according to processing requirements, and each spray gun is controlled by a pressure regulating valve and a pressure gauge.

The foregoing shows and describes the general principles, essential features, and inventive features of this invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.