An asymmetric driving wheel applied to a gas floating conveying device of a liquid crystal glass substrate inspection equipment

Abstract

The application discloses an asymmetric driving wheel applied to a gas floating conveying liquid crystal glass substrate inspection equipment, relates to the technical field of glass substrate processing, and comprises a roller shaft, first side baffles and second side baffles are arranged oppositely on the roller shaft; the first side baffles are arranged with annular structure first inclined ends in the direction of the second side baffles, the inner side of the first inclined end is arranged with a first flange, the second side baffles are arranged with annular structure second inclined ends in the direction of the first side baffles, and the inner side of the second inclined end is arranged with a second flange; wherein the first inclined end and the first flange and the second inclined end and the second flange form a V-shaped groove for embedding the glass substrate; the outer diameter of the second side baffle is smaller than that of the first side baffle; the asymmetric driving wheel in the application meets the accuracy requirements of glass re-inspection and edge inspection, greatly stabilizes the safety of glass conveying operation, and effectively reduces the occurrence of abnormal fragments.

Description

Technical Field

[0001] This invention relates to the field of glass substrate processing technology, and more specifically to an air-floating conveyor asymmetric drive wheel used in liquid crystal glass substrate inspection equipment. Background Technology

[0002] In the post-processing production line of LCD glass substrates, the inspection equipment conveyor after post-processing mostly uses a vertical air-floating conveyor belt to transport the glass. The vertical conveyor belt is generally selected with an inclination angle of 80-82 degrees. The advantages of using a vertical air-floating conveyor are: small footprint, saving factory space; compatibility with the production of multiple varieties; high reliability and stability of vertical conveying technology, which is beneficial for the detection of particulate matter, inclusion defects and end face defects on the glass surface.

[0003] Refer to the accompanying drawings in the instruction manual. Figure 1 The existing glass conveyor belt uses a V-groove drive roller, which is divided into symmetrical drive wheels. The symmetrical V-groove drive wheels are installed and used on the air-floating conveyor belt of the inspection equipment. However, when installed on the re-inspection machine of the inspection equipment, there are certain drawbacks:

[0004] This type of symmetrical drive wheel includes two side baffles with an outer diameter of 70mm and an inner diameter of 56mm, and also includes O-rings that fit onto the drive wheel axle. Figure 1 As shown, this symmetrical drive wheel is installed after the air-floating conveyor belt of the inspection equipment re-inspection machine. When the re-inspection machine detects defects in the inclusions of liquid crystal glass, the height of the outer baffle is 7mm and there is an overlap area with the edge of the glass. This 2mm (7mm-5mm=2mm) overlap blocks the light source of the re-inspection camera and cannot obtain defect information, thus becoming a blind spot for detection and affecting the control of glass quality. Summary of the Invention

[0005] The purpose of this invention is to provide an air-floating conveyor asymmetric drive wheel for use in liquid crystal glass substrate inspection equipment, solving the following technical problems:

[0006] The outer baffle has a 7mm height and an overlap area with the glass edge. This 2mm overlap blocks the light source of the re-inspection camera, making it impossible to obtain defect information and thus becoming a blind spot for inspection, affecting the control of glass quality.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] An asymmetric drive wheel for air-floating conveying in a liquid crystal glass substrate inspection equipment includes a roller shaft, on which a first side baffle and a second side baffle are arranged opposite to each other.

[0009] The first side baffle is provided with a first inclined end of an annular structure facing the direction of the second side baffle, and a first flange is provided on the inner side of the first inclined end. The second side baffle is provided with a second inclined end of an annular structure facing the direction of the first side baffle, and a second flange is provided on the inner side of the second inclined end.

[0010] Wherein, the first inclined end and the first flange together with the second inclined end and the second flange form a V-shaped groove for embedding into the glass substrate;

[0011] The outer diameter of the second side baffle is smaller than the outer diameter of the first side baffle.

[0012] Preferably, an O-ring is embedded in the V-groove.

[0013] Preferably, a first positioning hole is provided at the center end of the first side baffle, and a second positioning hole is provided at the center end of the second side baffle.

[0014] Preferably, a fixing ring is integrally arranged on the roller shaft, and several sets of first positioning grooves are formed in a circumferential array on the fixing ring;

[0015] A center hole is provided at the central end of the roller shaft.

[0016] Preferably, a plurality of second positioning grooves are formed in a circumferential array on the first side baffle, and a plurality of third positioning grooves are formed in a circumferential array on the second side baffle.

[0017] Preferably, the O-ring has a diameter of 56 mm and a width of 4.3 mm.

[0018] Preferably, the outer diameter of the first side baffle is 70mm and the inner diameter is 56mm; the outer diameter of the second side baffle is 61mm and the inner diameter is 56mm.

[0019] Preferably, the inner ends of the first side baffle and the second side baffle are simultaneously provided with annular grooves for embedding O-rings.

[0020] Preferably, the depth of the annular groove of the first side baffle is 1.5 mm, and the depth of the annular groove of the second side baffle is 1.4 mm.

[0021] The beneficial effects of this invention are:

[0022] (1) The asymmetric drive wheel in this invention is applied to production practice for verification. Due to the smaller outer diameter of the second side baffle of the drive wheel, the groove of the O-ring is widened and thickened, the mechanical strength is increased, and the depth of the groove is optimized, which increases the exposed gap of the O-ring installed at the bottom of the drive wheel to 1.4mm. This increases the contact area between the O-ring and the glass. In addition to the glass weight remaining unchanged and the friction coefficient of the O-ring remaining constant, the friction force obtained by the bottom edge of the glass also increases. Therefore, the transmission power is enhanced and the speed obtained is also increased. The glass acceleration is stable and increased, and the speed is also faster. It is easier to adapt to the characteristics of high-speed transmission, ensuring the production cycle and equipment utilization rate of the equipment.

[0023] (2) The asymmetric drive wheel in this invention meets the accuracy requirements of glass re-inspection and edge inspection, and greatly stabilizes the safety of glass conveying operation, effectively reducing the occurrence of abnormalities such as broken plates, and completely replaces the original drive wheel in the high-speed section of the inspection machine.

[0024] (3) The asymmetric drive wheel in this invention has the characteristics of being compact and lightweight, and also solves the problem of the 2mm wide blind spot of the vertical capture glass bottom edge of the re-inspection camera; it extends the service life of the second side baffle from 3-6 months to more than 12-24 months, reducing consumption and saving costs. Attached Figure Description

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of a symmetrical drive wheel in the prior art;

[0027] Figure 2 This is a schematic diagram of the structure of the first side baffle in the air-float conveying asymmetric drive wheel of a liquid crystal glass substrate inspection equipment according to the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the roller shaft in the asymmetric drive wheel of the air-floating conveyor in a liquid crystal glass substrate inspection equipment according to the present invention. Figure 1 ;

[0029] Figure 4 This is a schematic diagram of the structure of the second side baffle in the air-floating conveyor asymmetric drive wheel of a liquid crystal glass substrate inspection equipment according to the present invention. Figure 1 ;

[0030] Figure 5 This is a schematic diagram of the structure of the roller shaft in the asymmetric drive wheel of the air-floating conveyor in a liquid crystal glass substrate inspection equipment according to the present invention. Figure 2 ;

[0031] Figure 6 This is a schematic diagram of the structure of the O-ring in the air-float conveying asymmetric drive wheel of a liquid crystal glass substrate inspection equipment according to the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the second side baffle in the air-floating conveyor asymmetric drive wheel of a liquid crystal glass substrate inspection equipment according to the present invention. Figure 2 .

[0033] In the figure: 1. First side baffle; 2. Roller shaft; 3. Second side baffle; 4. O-ring; 101. First positioning hole; 102. First inclined end; 103. First flange; 104. Second positioning groove; 201. Center hole; 202. Fixing ring; 203. First positioning groove; 301. Second inclined end; 302. Second positioning hole; 303. Third positioning groove; 304. Second flange. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1

[0036] Please see Figures 1-2 As shown, the present invention is an asymmetric drive wheel for air-floating conveying in a liquid crystal glass substrate inspection equipment, including a roller shaft 2, on which a first side baffle 1 and a second side baffle 3 are arranged opposite to each other; in one embodiment of this invention, the first side baffle 1 and the second side baffle 3 are both set as annular structures, and the first side baffle 1 and the second side baffle 3 are sleeved and fixed on the roller shaft 2.

[0037] The first side baffle 1 has a first positioning hole 101 at its center end, and the second side baffle 3 has a second positioning hole 302 at its center end. Specifically, in this embodiment, the first positioning hole 101 and the second positioning hole 302 have the same diameter. It should be noted that when installing the first side baffle 1 and the second side baffle 3, the first side baffle 1 and the second side baffle 3 are respectively sleeved and fixed on the roller shaft 2 through the first positioning hole 101 and the second positioning hole 302.

[0038] The first side baffle 1 is provided with a first inclined end 102 with an annular structure facing the second side baffle 3. A first flange 103 is provided on the inner side of the first inclined end 102. The second side baffle 3 is provided with a second inclined end 301 with an annular structure facing the first side baffle 1. A second flange 304 is provided on the inner side of the second inclined end 301. The first inclined end 102 and the first flange 103 together with the second inclined end 301 and the second flange 304 form a V-shaped groove for embedding a glass substrate. The outer diameter of the second side baffle 3 is smaller than the outer diameter of the first side baffle 1.

[0039] It should be noted that the outer diameter of the first side baffle 1 is 70mm and the inner diameter is 56mm; the outer diameter of the second side baffle 3 is 61mm and the inner diameter is 56mm; the thickness of the first side baffle 1 is 3.5mm and the thickness of the second side baffle 3 is 5mm; this improves its mechanical strength to prevent the drive wheel side baffle from cracking and being easily damaged due to disassembly during frequent replacement of O-ring 4 or impact during high-speed glass transport;

[0040] The outer diameter of roller shaft 2 is 50mm; the material of the second side baffle 3 is PEEK (polyether ether ketone), and the color is selected as white, which forms a clear color difference with the installed green O-ring and black roller shaft, so as to facilitate inspection and cleaning management during the production process.

[0041] Specifically, in this embodiment, the air flotation conveyor belt includes several sets of asymmetrical drive wheels arranged in an array, specifically 20-24 sets. Each set of drive wheels is connected to the drive motor via a synchronous pulley. The inspection machine is equipped with 7 sections of air flotation conveyor belt, plus 2 sections of asymmetrical drive wheel conveyor belt for re-inspection, for a total of 9 sections of air flotation conveyor belt. The particle detection, inclusion defect detection and edge grinding quality detection of the inspection machine are arranged on the above-mentioned air flotation conveyor belt.

[0042] The second side baffle 3 faces the detection end, which allows the drive motor to drive the drive wheel through the synchronous belt pulley, and drives the glass substrate based on the V-groove. At the same time, because the outer diameter of the second side baffle 3 is small, it will not block the detection surface of the glass substrate, so the detection is more complete and the accuracy is higher.

[0043] Example 2

[0044] Based on Example 1, please refer to Figures 3-5 An O-ring 4 is embedded in the V-groove. It can be explained that the embedded O-ring 4 causes the O-ring 4 to deform under the pressure of the glass during the glass substrate transfer, thereby generating friction and achieving the purpose of glass substrate transfer and inspection.

[0045] As a further embodiment, a fixing ring 202 is integrally arranged on the roller shaft 2, and a plurality of first positioning grooves 203 are formed in a circumferential array on the fixing ring 202, wherein a central hole 201 is formed at the shaft end of the roller shaft 2.

[0046] The diameter of the center hole 201 is 19mm;

[0047] Furthermore, several sets of second positioning grooves 104 are correspondingly arranged in a circumferential array on the first side baffle 1, and several sets of third positioning grooves 303 are correspondingly arranged in a circumferential array on the second side baffle 3. It can be explained that when installing the first side baffle 1 and the second side baffle 3, the first side baffle 1 is first sleeved on the roller shaft 2, and then the first side baffle 1 is fixed by several sets of M3 screws inserted through the first positioning groove 203 and the second positioning groove 104. After the O-ring 4 is sleeved in the V-groove, the second side baffle 3 is sleeved on the roller shaft 2, and then the second side baffle 3 is fixed by several sets of M3 screws inserted through the third positioning groove 303 and the first positioning groove 203.

[0048] Specifically, the diameter of O-ring 4 is 56mm, and its width is 4.3mm;

[0049] The outer diameter of the second side baffle 3 is changed from Ø70mm to Ø61mm, which mainly reduces the height difference between it and the O-ring 4 at the bottom of the V-groove after installation from 14mm to 5mm. This makes the O-ring 4 exposed, which is beneficial for high-speed glass conveying to reach 60-100 meters per minute.

[0050] Please see Figures 6-7 Furthermore, the inner ends of the first side baffle 1 and the second side baffle 3 are simultaneously provided with annular grooves for embedding the O-ring 4. It can be explained that when installing the O-ring 4, the O-ring 4 is embedded in the annular grooves of the first side baffle 1 and the second side baffle 3 at both ends, so as to achieve the clamping and positioning of the O-ring 4, making the installation stability of the O-ring in the V-groove higher.

[0051] Specifically, the depth of the annular groove of the first side baffle 1 is 1.5 mm, and the depth of the annular groove of the second side baffle 3 is 1.4 mm.

[0052] The groove of the second side baffle 3 is changed from 1.5mm to 1.4mm. After it is installed with the O-ring 4, the exposed width of the V-ring 4 is increased by 0.1mm, which means that the gap of the V-ring wheel is changed from 1.3mm to 1.4mm. This increases the contact area and friction between the glass and the O-ring 4 during glass conveying, solves the slippage problem during conveying, and reduces the risk of glass breakage.

[0053] The working principle of this invention is as follows: When installing the first side baffle 1 and the second side baffle 3, the first side baffle 1 is first sleeved on the roller shaft 2, and then the first side baffle 1 is fixed by inserting several sets of M3 screws through the first positioning groove 203 and the second positioning groove 104. After the O-ring 4 is sleeved in the V-groove, the second side baffle 3 is sleeved on the roller shaft 2, and then the second side baffle 3 is fixed by inserting several sets of M3 screws through the third positioning groove 303 and the first positioning groove 203. When the drive motor drives the drive wheel through the synchronous belt pulley, the glass substrate is driven by the V-groove. At the same time, since the outer diameter of the second side baffle 3 is small, it will not block the detection surface of the glass substrate, resulting in more complete detection and higher accuracy.

[0054] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0055] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0056] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. An asymmetric driving wheel applied to a liquid crystal glass substrate inspection equipment air floating conveying device, comprising a roller shaft (2), characterized in that, The roller shaft (2) is provided with a first side baffle (1) and a second side baffle (3) arranged oppositely. The first side baffle (1) is arranged with a first inclined end (102) of an annular structure towards the direction of the second side baffle (3), and a first flange (103) is arranged inside the first inclined end (102); the second side baffle (3) is arranged with a second inclined end (301) of an annular structure towards the direction of the first side baffle (1), and a second flange (304) is arranged inside the second inclined end (301); The first inclined end (102) and the first flange (103) and the second inclined end (301) and the second flange (304) form a V-shaped groove for embedding a glass substrate. The outer diameter of the second side baffle (3) is smaller than that of the first side baffle (1); the second side baffle (3) is towards the detection end, so that when the driving motor drives the driving wheel through the synchronous pulley, the glass substrate is driven based on the V-shaped groove, and since the outer diameter of the second side baffle (3) is smaller, it will not block the detection surface of the glass substrate, the detection is more sufficient, and the precision is higher.

2. The air-floating transmission asymmetric driving wheel applied to the liquid crystal glass substrate inspection equipment according to claim 1, wherein An O-ring (4) is embedded in the V-shaped groove.

3. The air-floating transmission asymmetric driving wheel applied to the liquid crystal glass substrate inspection equipment according to claim 1, wherein, A first positioning hole (101) is arranged at the center end of the first side baffle (1), and a second positioning hole (302) is arranged at the center end of the second side baffle (3).

4. The air-floating transmission asymmetric driving wheel applied to the liquid crystal glass substrate inspection equipment according to claim 3, wherein, The roller shaft (2) is integrally arranged with a fixing ring (202), and a plurality of groups of first positioning grooves (203) are arranged in a circumferential array on the fixing ring (202). The roller shaft (2) is arranged with a center hole (201) at the shaft center.

5. The air-floating transmission asymmetric driving wheel applied to the liquid crystal glass substrate inspection equipment according to claim 4, wherein, A plurality of groups of second positioning grooves (104) are arranged in a circumferential array on the first side baffle (1), and a plurality of groups of third positioning grooves (303) are arranged in a circumferential array on the second side baffle (3).

6. The air-floating transmission asymmetric driving wheel applied to the liquid crystal glass substrate inspection equipment according to claim 2, wherein, The diameter of the O-ring (4) is 56mm, and the width is 4.3mm.

7. The air-floating transmission asymmetric driving wheel applied to the liquid crystal glass substrate inspection equipment according to claim 1, wherein, The outer diameter of the first side baffle (1) is 70mm, and the inner diameter is 56mm; the outer diameter of the second side baffle (3) is 61mm, and the inner diameter is 56mm.

8. The air-floating transmission asymmetric driving wheel applied to the liquid crystal glass substrate inspection equipment according to claim 6, wherein, The first side baffle (1) and the second side baffle (3) are synchronously arranged with annular grooves for embedding the O-ring (4) at the inner end.

9. The air-floating transmission asymmetric driving wheel applied to the liquid crystal glass substrate inspection equipment according to claim 8, wherein, The depth of the annular groove of the first side baffle (1) is 1.5mm, and the depth of the annular groove of the second side baffle (3) is 1.4mm.

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