Screen display glass corner grinding process based on cooperation of air knife and water knife

Abstract

The invention discloses a screen display glass corner grinding process based on cooperation of an air knife and a water knife. The screen display glass corner grinding process comprises the steps that S1, screen display glass is positioned; s2, grinding a first group of side edges; s3, grinding a first group of opposite angles; s4, grinding a second group of side edges; and S5, grinding the second group of opposite angles. On one hand, during side edge grinding and diagonal grinding, the arc-shaped area formed by the air knife with the circle center of the grinding wheel as the reference comprehensively blocks the grinding part without dead corners, meanwhile, the air knife assists the water jet to enable water flow of the water jet to pass through the grinding section in a flowing mode, the water flow and sweeps are prevented from splashing outwards, and the grinding efficiency is improved. Therefore, scraps and grinding heat are taken away, and the grinding precision and quality are improved; and on the other hand, based on grinding width adjustment and grinding angle setting, grinding of the side edges and the opposite angles is conducted in sequence in a grouping mode, corner grinding of the screen display glass is efficiently completed, lateral force control in the grinding process is better facilitated through synchronous grinding, and the corner damage rate caused by grinding is reduced.

Description

Technical Field

[0001] This invention belongs to the field of glass processing technology, specifically relating to a screen display glass edge grinding process based on the cooperation of air knife and water knife. Background Technology

[0002] Currently, in the production of electronic screens, glass serves as the "basic framework" and "functional expander" of the display screen: from the substrate of traditional LCDs to the cover glass of modern mobile phones, from supporting the display medium to integrating touch and packaging functions, glass, with its optical, mechanical and chemical properties, has deeply participated in the performance improvement and form innovation of the display screen. In other words, without the optimization and application of glass, it would be difficult to realize modern high-definition, durable and multifunctional displays.

[0003] However, during the processing of glass plates, it is necessary to grind the long sides, short sides, and four corners of the glass to eliminate stress after cutting and remove sharp edges and foreign objects. Therefore, a glass edge grinding and chamfering machine is required. For example, Chinese Patent No. CN118595942B discloses a glass substrate grinding device, which includes a grinding shell and a water jet. The grinding shell has a through groove formed along a first horizontal direction, suitable for allowing one side of the glass substrate to pass continuously. A grinding wheel is provided inside the grinding shell. A negative pressure interface is provided on one side of the grinding shell. The negative pressure interface is used to connect external equipment and maintains a negative pressure state inside the grinding shell. The grinding shell is equipped with an upper air knife, with a first air outlet on its inward-facing side along a second horizontal direction, used to blow air onto one side of the upper surface of the glass substrate. The grinding shell is also equipped with a lower air knife, with a second air outlet on its inward-facing side along a second horizontal direction, used to blow air onto one side of the lower surface of the glass substrate. The lower and upper air knives are symmetrically arranged vertically at both ends of the through-slot. An upper water jet is used to spray water onto the upper surface of the grinding area of ​​the glass substrate. In other words, by employing a combination of through-slot, negative pressure interface, and water jet in the glass substrate grinding device, the problem of grinding water overflow is solved, ensuring that the grinding water remains within the grinding area, thus improving the grinding quality of the glass substrate and the quality of subsequent processing. However, the above implementation has the following technical defects: 1) The water jet used is a straight type, and during the grinding process, the grinding section is only formed between the grinding wheel groove and the glass contact part. Therefore, the water generated by the water jet can only rush towards the surface of the grinding wheel and cannot enter the grinding section. At the same time, under the interception of the water jet, some grinding waste is splashed into the grinding shell, and the rest is thrown towards the negative pressure port and extracted. Therefore, not only can the glass edge of the grinding section be ground synchronously in the flowing water, but the water flow generated by the water jet cannot carry the grinding waste to the negative pressure port. At the same time, a large amount of waste residue will remain on the inner wall of the grinding shell. Once it falls on the grinding wheel, it will affect the grinding quality. Moreover, it requires frequent disassembly and cleaning, which is time-consuming and laborious. 2) The air knife used is also straight, and its main function is to form another isolation wall to prevent water and debris from splashing and causing damage to the glass surface. At the same time, the air knife and water knife do not cooperate in the grinding process, so high-quality grinding cannot be carried out, and the edge grinding breakage rate is also high. 3) Most display glass is rectangular. Therefore, if only one side is ground, it is not only inefficient, but also when grinding the corners, since there is no glass surface to guide the water and air, the water and air will rush around after hitting the grinding wheel. Therefore, there is still a probability of splashing and causing damage to the glass surface. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an improved screen glass edge grinding process based on the cooperation of air knife and water knife.

[0005] To achieve the above objectives, the present invention adopts the following solution: A corner grinding process for display glass based on the collaboration of air knife and water knife, the corner grinding equipment includes a positioning unit for the display glass, a traversing unit that drives the positioning unit to move laterally along the grinding path, and two grinding units located on both sides of the grinding path and adjustable based on the width of the grinding path. Each grinding unit includes a grinding seat, a grinding wheel forming a groove, an air knife, a water knife, and a waste collection group. The grinding seat has a wheel cavity and a notch that intersects and penetrates from one side of the wheel cavity along the grinding path. The grinding wheel is installed in the wheel cavity, and the grinding part is located on the through path of the notch. The air knife is distributed in an arc shape above and below the notch with the center of the grinding wheel as the reference. The water knife forms a water flow with the wheel groove as the reference and adheres to the grinding part. The process includes the following steps: S1, Display Glass Positioning The display glass is horizontally positioned on the machine platform. The display glass is square and has first and second sets of side edges and first and second sets of diagonals. S2, First set of side grinding Adjust the grinding width and drive the machine to enter the two notches synchronously along the length of the first set of sides. The glass edge contacts the wheel groove and forms a grinding section with the first and second ends based on the glass surface under the arc obstruction of the air knife. With the cooperation of water and air knife, the water flow adheres to the grinding wheel and enters the grinding section from the first end. After entering the grinding section, it is thrown towards the waste collection group from the second end as the grinding wheel rotates. The screen glass is pushed forward to achieve synchronous grinding of the first set of sides. S3, First group of diagonal grinding Adjust the grinding width, rotate the machine table so that the two opposite corners of the display glass face the opposite sides of the grinding path, and move the machine table laterally so that the two opposite corners enter the notch to complete the edge grinding at the corresponding rotation angle simultaneously or sequentially. S4, Second set of side grinding Rotate the machine table so that the second set of sides are parallel to the grinding path, and repeat step S2; S5, Second group diagonal grinding Rotate the machine table so that the two opposite corners of the display glass face opposite sides of the grinding path, and repeat step S3.

[0006] Preferably, in step S2, the lateral forces generated by the two grinding units cancel each other out. The lateral forces form components in the length and width directions of the glass, where the components in the same direction are superimposed and the components in opposite directions cancel each other out, thereby reducing the breakage rate of the glass during the grinding process and improving the grinding accuracy and quality.

[0007] Furthermore, in step S2, the force generated by the two grinding units along the grinding path is in the same direction as the movement direction of the display glass. The superposition of the resulting force components can further propel the glass forward, thereby reducing the effort required for grinding and improving grinding efficiency.

[0008] According to a specific embodiment and preferred aspect of the invention, the water jet outlet is located near the first end, and in step S2, the direction of the water flow from the water jet is tangential to the grinding wheel. Based on the tangential entry of the water jet, it is easier to conform to the wheel groove for smooth flow into the grinding section.

[0009] Preferably, with the assistance of the air knife, the water jet is divided into two streams. The first stream adheres to the wheel groove and, after passing through the grinding section, is thrown towards the waste collection group; the second stream flows towards the glass surface and, with the air knife's obstruction, is thrown towards the waste collection group as the grinding wheel rotates. This further demonstrates the synergy between the air knife and the water jet, effectively washing away the waste generated during grinding. This not only prevents grinding dust and effectively removes waste, but also provides a cooling effect, reducing edge breakage and thus improving grinding quality.

[0010] In some specific embodiments, the second water stream flows to both the front and back of the glass, and follows the movement of the grinding wheel under the action of the upper and lower air knives. This not only removes debris based on the rotation of the grinding wheel, but the resulting water flow also further enhances the water-cooling effect of the grinding section.

[0011] Preferably, a dark groove is formed on the grinding seat, communicating with the wheel cavity and tangent to the grinding wheel, wherein the dark groove is aligned with the wheel groove of the grinding wheel, and the dark groove is connected to the external water flow from the grinding seat, and the water flow ejected from the dark groove forms a water jet. The alignment of the dark groove and the wheel groove further facilitates the flow of the first stream of water.

[0012] According to another specific embodiment and preferred aspect of the invention, an upper air cavity and a lower air cavity are formed in the upper and lower parts of the notch, respectively. The upper air cavity forms an upper air opening that slopes downwards towards the grinding wheel and gradually narrows in width. The lower air cavity forms a lower air opening corresponding to the upper air cavity. The airflow from the upper and lower air openings is guided secondary based on the glass surface to form a water jet diversion and obstruction. The pressurized airflow from the upper and lower air openings increases the sweeping and obstruction capabilities of the water jet. At the same time, the upper and lower airflows generate deflected airflow after blowing onto the surface. Therefore, the area where the deflected airflow is located is an obstruction zone, thereby improving the wind resistance effect.

[0013] According to another specific embodiment and preferred aspect of the invention, the waste collection assembly includes a collection bin facing the end of the grinding wheel that is thrown out, a main collection path and a secondary collection path communicating with the collection bin, wherein in step S2, a portion of the waste thrown into the collection bin is discharged from the main collection path, and the remaining portion is discharged from the secondary collection path. Based on the cooperative collection of the main and secondary paths, the thrown waste is quickly collected to prevent waste from flowing back into the wheel cavity and causing insufficient grinding quality.

[0014] Preferably, the collection chamber has a bottom plate, side plates, and a top plate. The inner walls of the side plates form multiple buffer side walls. The auxiliary collection path collects waste through drain holes on the bottom plate. The main collection path enters through the buffer side walls and collects waste based on negative pressure. This multi-buffered approach reduces water flow disturbance, thereby increasing the efficiency and quality of waste collection.

[0015] In some specific implementations, the inlet of the main collection path is located to the side and below the grinding wheel groove. The main reason for this design is that once the water is freed from the air knife's restriction, it will flow down from the wheel groove, making it easier to throw into the main collection path during centrifugal throwing. At the same time, the water flowing along the buffer sidewall can also enter the main collection path, thereby increasing the waste collection capacity of the main path.

[0016] In some specific embodiments, the multi-buffered sidewalls include at least a first buffer wall that extends forward and curves inward along the direction of the grinding section, and a second buffer wall that curves along the first buffer wall and forms a backflow, wherein the first and second buffer walls form a continuous buffer. Based on the two buffers, the water flow can be streamlined and fall into the auxiliary channel more efficiently.

[0017] According to another specific embodiment and preferred aspect of the invention, the grinding wheel has multiple grooves formed circumferentially from top to bottom, and the corresponding grooves are selected for grinding based on the up-and-down movement of the grinding wheel in the wheel cavity, with the upper and lower edges of the corners being ground simultaneously. Here, the selection of multiple grooves not only increases the practicality of grinding (applicable to glass of different thicknesses), but also allows for flexible selection should a particular groove be damaged, i.e., high flexibility.

[0018] According to another specific embodiment and preferred aspect of the invention, the positioning unit includes a machine base based on negative pressure adsorption and a power unit that drives the machine base to rotate, wherein the display glass protrudes from the edge of the machine base from the side to be ground or diagonally; the traversing unit is a track-type moving module, and the machine base can rotate synchronously during movement. Based on the principle of negative pressure adsorption, the stability of glass positioning is maintained, while also facilitating glass assembly line operations.

[0019] Furthermore, the grinding units on both sides are adjusted based on the truss facing each other and synchronously to match the grinding of edges and corners of different widths. This ensures that the grinding centerline remains unchanged, which is more conducive to the grinding process.

[0020] In some specific implementations, when the display glass is square, the two opposite corners enter the notch to simultaneously complete diagonal grinding at the corresponding rotation angle. When the display glass is rectangular, the two opposite corners enter the notch to sequentially complete edge and corner grinding at the corresponding rotation angle. In short, during diagonal (referring to corners) grinding, a commonly used grinding angle is 45°. When the display glass is square, after rotating 45°, the two corners remain symmetrical, meaning that the corners on both sides can be ground simultaneously. When the display glass is rectangular, after rotating 45°, the two corners are relatively misaligned, meaning that they can be ground sequentially.

[0021] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: In existing edge grinding processes for display glass, firstly, the water jets used are linear, and during the grinding process, the grinding section is only formed between the grinding wheel groove and the glass contact area. Therefore, the water jet can only reach the surface of the grinding wheel and cannot enter the grinding section. Simultaneously, the water jet intercepts some grinding waste, splashing it into the grinding housing, while the remainder is thrown towards the negative pressure port for extraction. Thus, not only is it impossible to achieve synchronous grinding of the glass edge in the flowing water, but the water jet's flow also cannot carry the grinding waste towards the negative pressure port. Furthermore, a large amount of waste residue remains on the inner wall of the grinding housing; if it settles on the grinding wheel, it will affect the grinding quality. Moreover, it requires frequent disassembly and cleaning, which is time-consuming and labor-intensive. Secondly, the air knife used is also linear. The main function is to form an additional isolation wall to prevent water and debris from splashing and damaging the glass surface. However, the air knife and water knife do not cooperate during the grinding process, making high-quality grinding impossible and resulting in a high breakage rate at the edges and corners. Finally, since most display glass is rectangular, single-sided grinding is not only inefficient, but also results in erratic water and airflow when grinding edges and corners due to the lack of a glass surface for guidance. This leads to continued risk of splashing and damage to the glass surface. This invention, however, is based on a holistic design for edge grinding of display glass using a combined air knife and water knife, cleverly addressing the shortcomings and defects of existing technologies. After the grinding process, firstly, the display glass is horizontally positioned on the machine platform. The display glass is square and has first and second sets of sides and first and second sets of diagonals. Secondly, the machine platform is driven to simultaneously enter the two notches along the length of the first set of sides. The glass edge contacts the wheel groove, and a grinding section with first and second ends is formed on the glass surface under the arc obstruction of the air knife. With the cooperation of water and air knife, the water flow adheres to the grinding wheel and enters the grinding section from the first end, then is thrown towards the waste collection group from the second end as the grinding wheel rotates. As the display glass advances, the first set of sides is simultaneously ground. Next, the machine platform is rotated so that the two diagonals of the display glass face opposite sides of the grinding path, and the machine platform is moved laterally so that the two opposite diagonals enter the notches simultaneously or... The grinding process is completed sequentially at the corresponding rotation angles. Then, the machine table is rotated so that the second set of sides is parallel to the grinding path, and the grinding action of the first set of sides is repeated. Finally, the machine table is rotated so that the two opposite corners of the display glass face the opposite sides of the grinding path, and the grinding action of the first set of diagonals is repeated, thereby completing the grinding of the first and second sets of sides and the first and second sets of diagonals. Therefore, in both side and diagonal grinding, the air knife used in this invention forms an arc-shaped area with the center of the grinding wheel as the reference, which completely blocks the grinding section without dead angles. At the same time, the air knife assists the water knife, which not only allows the water flow of the water knife to pass through the grinding section in a flowing manner, but also prevents water flow and waste chips from splashing outward, thereby removing waste chips and grinding heat, and improving grinding accuracy and quality.On the other hand, based on the adjustment of grinding width and the setting of grinding angle, the sides and diagonals are ground sequentially in groups. This not only efficiently completes the grinding of the edges and corners of the display glass, but the synchronous grinding method also facilitates the control of lateral force during grinding, reducing the edge and corner damage rate caused by grinding. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the edge and corner grinding equipment of the present invention; Figure 2 for Figure 1 Front view diagram; Figure 3 for Figure 2 A top-down view; Figure 4 for Figure 1 A schematic diagram of the structure in which the two grinding units are located within the truss; Figure 5 for Figure 4 Schematic diagram of the grinding unit structure; Figure 6 for Figure 5 Front view diagram; Figure 7 for Figure 6 Schematic diagram of the sectional view along the central AA direction; Figure 8 for Figure 5 Schematic diagram of the middle section; Figure 9 for Figure 8 A top-down view; Figure 10 for Figure 9 Schematic diagram of the BB-direction section; Among them: 1. Positioning unit; 10. Machine base; 11. Power unit; 2. Lateral translation unit; 3. Grinding unit; 30. Grinding seat; 300. Wheel cavity; 301. Notch; 31. Grinding wheel; m. Wheel groove; 31a. Grinding section; 32. Air knife; 320. Upper air cavity; 321. Lower air cavity; 33. Water knife; 330. Hidden groove; 34. Waste collection group; 340. Collection bin; b1. Bin bottom plate; b10. Floor drain hole; b2. Bin side plate; s. Buffer side wall; s1. First buffer wall; s2. Second buffer wall; b3. Bin top plate; 341. Main collection path; 342. Auxiliary collection path; B. Display glass; H. Truss. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0024] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0028] like Figures 1 to 10 As shown, the edge grinding equipment of this embodiment includes a positioning unit 1 for the display glass, a lateral moving unit 2 that drives the positioning unit 1 to move laterally along the grinding path, and two grinding units 3 located on both sides of the grinding path and adjusted based on the width of the grinding path.

[0029] Positioning unit 1 includes a machine base 10 based on negative pressure adsorption and a power unit 11 that drives the machine base 10 to rotate. The display glass B protrudes from the edge of the machine base 10 from the side or diagonal to be ground. The transverse movement unit 2 is a track-type moving module (it is mainly guided by a track and then moves back and forth through a linear motion mechanism), and the machine base can rotate synchronously during movement. Based on the principle of negative pressure adsorption, the stability of glass positioning is maintained, while also facilitating glass assembly line operations. The grinding units 3 on both sides are adjusted by the truss H facing each other and synchronously to match the grinding of edges and corners of different widths. The resulting grinding centerline remains unchanged, which is more conducive to the grinding process.

[0030] In some specific embodiments, the grinding unit 3 includes a grinding seat 30, a grinding wheel 31 forming a groove m, an air knife 32, a water knife 33, and a waste collection group 34.

[0031] In this example, the grinding seat 30 has a wheel cavity 300 and a notch 301 that intersects and penetrates from one side of the wheel cavity 300 along the grinding path.

[0032] In this example, the grinding wheel 31 is installed inside the wheel cavity 300, and the grinding part 31a is located on the through path of the notch. Simultaneously, the grinding wheel 31 forms multiple grooves m circumferentially from top to bottom. The grinding wheel 31 moves up and down within the wheel cavity 300 to select the corresponding groove m for grinding, and the upper and lower edges of the corners are ground simultaneously. This selection of multiple grooves m not only increases the practicality of grinding (suitable for glass of different thicknesses), but also allows for flexible selection should a particular groove be damaged, thus offering high flexibility.

[0033] In this example, the air knife 32 is distributed in an arc shape on the upper and lower sides of the notch 301 with the center of the grinding wheel 31 as the reference. An upper air cavity 320 and a lower air cavity 321 are formed in the upper and lower parts of the notch 301, respectively. The upper air cavity 320 forms an upward-sloping air inlet towards the grinding wheel 31, with the slit width gradually narrowing. The lower air cavity 321 forms a corresponding downward air inlet to the upper air cavity 320. The airflow from the upper and lower air inlets is guided secondary by the glass surface to create diversion and obstruction for the water knife. The pressurized airflow from the upper and lower air inlets increases the air knife's sweeping and obstruction capabilities. Simultaneously, the airflow from the upper and lower air inlets creates deflected airflow after hitting the surface, thus creating obstruction zones in the areas where the deflected airflow occurs, thereby improving the wind resistance effect.

[0034] In this example, the water jet 33 forms a water flow with the wheel groove m as a reference and in contact with the grinding part 31a. Specifically, the direction of the water flow ejected from the water jet 33 is tangential to the grinding wheel 31. In this example, a dark groove 330 is formed on the grinding base 30, which communicates with the wheel cavity 300 and is tangential to the grinding wheel 31. The dark groove 330 is aligned with the wheel groove m of the grinding wheel 31. Based on the dark groove 330, the grinding base 30 is connected to the external water flow, and the water flow ejected from the dark groove 330 forms a water jet.

[0035] In this example, the waste collection group 34 includes a collection chamber 340 facing the end of the grinding wheel 31, a main collection path 341 connected to the collection chamber 340, and a secondary collection path 342. Waste thrown into the collection chamber 340 is discharged through the main collection path 341, and the remaining waste is discharged through the secondary collection path 342. Based on the coordinated collection of the main and secondary paths, the thrown waste is quickly collected to prevent waste chips from flowing back into the wheel cavity and causing insufficient grinding quality. Specifically, the collection chamber 340 has a bottom plate b1, a side plate b2, and a top plate b3. The inner wall of the side plate b2 forms multiple buffer sidewalls. The secondary collection path 342 collects waste through a drain hole b10 on the bottom plate b1. The main collection path 341 penetrates through the buffer sidewalls and collects waste using negative pressure assistance. The multiple buffers mitigate water flow disturbance, thereby increasing the efficiency and quality of waste collection. The inlet of the main collection path 341 is located below the grinding wheel groove m. The main reason for this design is that once the water is freed from the air knife's restriction, it flows down from the wheel groove. Therefore, it is easier to throw the water into the main collection path 341 during centrifugal throwing. Simultaneously, the water flowing along the buffer sidewalls s can also enter the main collection path 341, thereby increasing the waste collection capacity of the main path. In some specific embodiments, the multiple buffer sidewalls s include at least a first buffer wall s1 that extends forward along the throwing direction of the grinding section and curves inward in an arc, and a second buffer wall s2 that curves along the first buffer wall s1 and forms a backflow. The first buffer wall s1 and the second buffer wall s2 form a continuous buffer. Based on these two buffers, the water flow can be streamlined and fall into the auxiliary path more efficiently.

[0036] In summary, the screen glass edge grinding process based on the combined use of air blades and water jets in this embodiment includes the following steps: S1, Display Glass Positioning The display glass B is horizontally positioned on the machine 10. The display glass B is square and has first and second sets of side edges and first and second sets of diagonals. S2, First set of side grinding Using the center line of the grinding path as a reference, the distance between the two grinding units 3 is adjusted in opposite directions to adjust the grinding width. The drive table 10 enters the two notches 301 synchronously along the length direction of the first group of sides. The edge of the display glass B contacts the wheel groove m and forms a grinding section with the first and second ends based on the glass surface in the arc-shaped obstruction of the air knife 32. With the cooperation of the water knife 33 and the air knife 32, the water flow adheres to the grinding wheel 31 and enters the grinding section from the first end. After entering the grinding section, the water flow is thrown towards the waste collection group 34 from the second end as the grinding wheel rotates. The first group of sides are synchronously ground as the display glass B advances. S3, First group of diagonal grinding Using the center line of the grinding path as a reference, the distance between the two grinding units 3 is adjusted in opposite directions to adjust the grinding width. The machine table 10 is rotated so that the two opposite corners of the display glass B face the opposite sides of the grinding path, and the machine table 10 is moved laterally so that the two opposite corners enter the notch 301 to complete the edge grinding at the corresponding rotation angle synchronously or sequentially. S4, Second set of side grinding Using the center line of the grinding path as a reference, adjust the distance between the two grinding units 3 in opposite directions to adjust the grinding width, rotate the machine table 10 so that the second set of sides are parallel to the grinding path, and repeat step S2. S5, Second group diagonal grinding Using the center line of the grinding path as a reference, adjust the distance between the two grinding units 3 in opposite directions to adjust the grinding width, rotate the machine table 10 so that the two diagonals of the display glass B face the opposite sides of the grinding path, and repeat step S3.

[0037] Furthermore, in step S2, the lateral forces generated by the two grinding units 3 cancel each other out. The lateral forces form components in the length and width directions of the glass, with components in the same direction superimposing and components in opposite directions canceling each other out, thus reducing the breakage rate of the glass during grinding and improving grinding accuracy and quality. Further, in step S2, the force generated by the two grinding units along the grinding path is in the same direction as the movement of the display glass. The superposition of these components further propels the glass forward, making grinding easier and improving grinding efficiency. The water jet 33's outlet is close to the first end, and based on the tangential entry of the water jet, it more easily conforms to the wheel groove for a smooth flow into the grinding section. Simultaneously, with the assistance of the air knife 32, the water jet 33 splits into two streams. The first stream conforms to the wheel groove and, after passing through the grinding section, is thrown towards the waste collection group 34; the second stream flows towards the glass surface and, blocked by the air knife 32, is thrown towards the waste collection group 34 as the grinding wheel 31 rotates. This further demonstrates the synergy between the air knife and water knife, effectively washing away the debris generated during grinding. This not only prevents grinding dust and effectively removes debris, but also provides a cooling effect, reducing edge breakage and improving grinding quality. In some specific embodiments, the second water stream flows to both the front and back of the glass, and moves in conjunction with the grinding wheel under the action of the upper and lower air knives. This not only removes debris based on the rotation of the grinding wheel, but the resulting water flow also further enhances the water-cooling effect of the grinding section.

[0038] In some specific embodiments, when the display glass B is square, the two opposite corners enter the notch 301 to simultaneously complete diagonal grinding at the corresponding rotation angle. When the display glass B is rectangular, the two opposite corners enter the notch 301 to sequentially complete edge grinding at the corresponding rotation angle. In short, during diagonal (referring to corners) grinding, a commonly used grinding angle is 45°. When the display glass B is square, after rotating 45°, the two corners remain symmetrical, meaning that the corners on both sides can be ground synchronously. When the display glass B is rectangular, after rotating 45°, the two corners are in a relatively staggered state, meaning that they can be ground sequentially.

[0039] In summary, after adopting this grinding process, firstly, the display glass is horizontally positioned on the machine platform. The display glass is square and has first and second sets of sides and first and second sets of diagonals. Secondly, the machine platform is driven to simultaneously enter the two notches along the length of the first set of sides. The glass edge contacts the wheel groove, and a grinding section with first and second ends is formed on the glass surface under the arc-shaped obstruction of the air knife. With the cooperation of water and air knife, the water flow adheres to the grinding wheel and enters the grinding section from the first end, then is thrown towards the waste collection group from the second end as the grinding wheel rotates. As the display glass advances, the first set of sides is simultaneously ground. Then, the machine platform is rotated so that the two diagonals of the display glass face the grinding path. On both sides, the machine is moved laterally so that the two opposite corners enter the notch to simultaneously or sequentially complete the edge and corner grinding at the corresponding rotation angle; then, the machine is rotated so that the second set of sides is parallel to the grinding path, and the grinding action of the first set of sides is repeated; finally, the machine is rotated so that the two opposite corners of the display glass face the opposite sides of the grinding path, and the grinding action of the first set of diagonals is repeated, thereby completing the grinding of the first and second sets of sides and the first and second sets of diagonals. Therefore, in both side and diagonal grinding, the air knife used in this invention forms an arc-shaped area with the center of the grinding wheel as the reference to completely block the grinding part without dead angles. At the same time, the air knife assists the water knife in not only removing the water from the water knife but also... The water flows through the grinding section in a fluid manner, preventing water and debris from splashing outwards, thus carrying away debris and grinding heat, improving grinding accuracy and quality. Secondly, based on the adjustment of grinding width and the setting of grinding angle, the sides and diagonals are ground sequentially in groups. This not only efficiently completes the edge and corner grinding of the display glass, but the synchronous grinding also facilitates lateral force control during grinding, reducing the edge and corner damage rate caused by grinding. Thirdly, the lateral forces generated by the two grinding units cancel each other out, forming components in the length and width directions of the glass. The components in the same direction are superimposed, and the direction of the force is the same as the direction of movement of the display glass, thus requiring less effort to perform the grinding. Improve grinding efficiency; the opposing forces cancel each other out, reducing the glass breakage rate during grinding, while also improving grinding precision and quality; fourthly, based on the tangential entry of the water jet, it is easier to fit the wheel groove for smooth flow into the grinding section. At the same time, the cooperation of the air knife and water jet washes away the waste generated during grinding, not only avoiding grinding dust and effectively removing waste, but also having a cooling effect to reduce the edge breakage rate, thereby improving grinding quality; fifthly, based on the pressurized airflow from the upper and lower air outlets, the air knife's blowing and blocking capabilities are increased. At the same time, the upper and lower airflows generate deflected airflow after blowing onto the surface. Therefore, the areas where the deflected airflow is located are all blocking areas, thereby improving the wind resistance effect.The sixth aspect is the collaborative collection of main and auxiliary paths, which quickly collects the ejected waste material to prevent it from flowing back into the wheel cavity and causing insufficient grinding quality. Simultaneously, once the waste material is freed from the air knife's restraint, the water flows down from the wheel groove, making it easier to throw into the main collection path during centrifugal ejection. Water flowing along the buffer sidewall can also enter the main collection path, increasing its waste collection capacity. Furthermore, the multi-stage buffering system mitigates water flow turbulence, further improving waste collection efficiency and quality. The seventh aspect is the selection of multiple wheel grooves, which not only increases the practicality of grinding (suitable for glass of different thicknesses) but also allows for flexible replacement if a particular groove is damaged, offering high flexibility. The eighth aspect is based on negative pressure suction... The principle of attachment is to maintain the stability of glass positioning, and at the same time, the machine can rotate synchronously during movement, which is more convenient for glass assembly line operation; the ninth aspect is that the grinding units on both sides are adjusted based on the truss facing each other and synchronously to match the grinding of corners of different widths, so that the grinding center line will not change, which is more conducive to the grinding implementation; the tenth aspect is that in the process of diagonal (referring to corners) grinding, the commonly used grinding angle is 45°. When the display glass is square, after rotating 45°, the two corners are still in a symmetrical state, that is, the corners on both sides can be ground synchronously; when the display glass is rectangular, after rotating 45°, the two corners are in a relatively staggered state, that is, they can be ground sequentially.

[0040] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A screen glass edge grinding process based on the cooperation of air knife and water knife, the grinding equipment comprising a positioning unit, a traversing unit that drives the positioning unit to move laterally along the grinding path, and two grinding units located on both sides of the grinding path and adjustable based on the width of the grinding path, each grinding unit comprising a grinding seat, a grinding wheel forming a groove, an air knife, a water knife, and a waste collection group, characterized in that, The grinding stand has a wheel cavity and a notch that intersects and penetrates from one side of the wheel cavity along the grinding path. The grinding wheel is installed inside the wheel cavity, and the grinding part is located on the through path of the notch. The air knife is distributed in an arc shape on the upper and lower sides of the notch with the center of the grinding wheel as the reference. The water knife forms a water flow with the wheel groove as the reference and in contact with the grinding part. The process includes the following steps: S1, Display Glass Positioning The display glass is horizontally positioned on the machine platform. The display glass is square and has first and second sets of side edges and first and second sets of diagonals. S2, First set of side grinding Adjust the grinding width and drive the machine to enter the two notches synchronously along the length of the first set of sides. The edge of the display glass contacts the wheel groove and forms a grinding section with the first and second ends based on the surface of the display glass under the arc obstruction of the air knife. With the cooperation of water and air knife, the water flow adheres to the grinding wheel and enters the grinding section from the first end. After entering the grinding section, the water flow is thrown towards the waste collection group from the second end as the grinding wheel rotates. The water flow is also pushed forward with the display glass to achieve synchronous grinding of the first set of sides. S3, First group of diagonal grinding Adjust the grinding width, rotate the machine table so that the two opposite corners of the display glass face the opposite sides of the grinding path, and move the machine table laterally so that the two opposite corners enter the notch to complete the grinding at the corresponding rotation angle simultaneously or sequentially. S4, Second set of side grinding Rotate the machine table so that the second set of sides are parallel to the grinding path, and repeat step S2; S5, Second group diagonal grinding Rotate the machine table so that the two opposite corners of the display glass face opposite sides of the grinding path, and repeat step S3.

2. The screen glass edge grinding process based on the cooperation of air knife and water knife as described in claim 1, characterized in that, In step S2, the lateral forces generated by the two grinding units cancel each other out.

3. The screen glass edge grinding process based on the cooperation of air knife and water knife as described in claim 1, characterized in that, In step S2, the direction of the force generated by the two grinding units along the grinding path is the same as the direction of movement of the display glass.

4. The screen glass edge grinding process based on the cooperation of air knife and water knife as described in claim 1, characterized in that, The water jet outlet is close to the first end. In step S2, the direction of the water flow from the water jet is tangential to the grinding wheel.

5. The screen glass edge grinding process based on the cooperation of air knife and water knife as described in claim 4, characterized in that, With the assistance of the air knife, the water jet splits into two streams. The first stream fits into the wheel groove and is thrown towards the waste collection group after passing through the grinding section. The second stream flows towards the glass surface and, with the air knife obstructing it, is thrown towards the waste collection group as the grinding wheel rotates.

6. The screen glass edge grinding process based on the cooperation of air knife and water knife as described in claim 5, characterized in that, The second stream of water flows to the front and back of the glass respectively, and follows the movement of the grinding wheel under the action of the upper and lower air knives.

7. The screen glass edge grinding process based on the combined use of air knife and water knife as described in claim 1, characterized in that, A dark groove is formed on the grinding seat, which is connected to the wheel cavity and tangent to the grinding wheel. The dark groove is aligned with the wheel groove of the grinding wheel. The dark groove is connected to the external water flow from the grinding seat, and the water flow ejected from the dark groove forms a water jet.

8. The screen glass edge grinding process based on the cooperation of air knife and water knife as described in claim 1, characterized in that, The upper and lower air chambers are formed at the top and bottom of the notch, respectively. The upper air chamber forms an upper air opening that slopes downwards toward the grinding wheel and gradually narrows in width. The lower air chamber forms a lower air opening corresponding to the upper air chamber. The airflow from the upper and lower air openings is guided by the glass surface to form a secondary guide to split and block the water jet.

9. The screen glass edge grinding process based on the cooperation of air knife and water knife as described in claim 1, characterized in that, The waste collection group includes a collection bin facing the end of the grinding wheel, a main collection path and a secondary collection path connected to the collection bin. In step S2, the waste material thrown into the collection bin is discharged from the main collection path and the remaining waste material is discharged from the secondary collection path.

10. The screen glass edge grinding process based on the cooperation of air knife and water knife according to claim 9, characterized in that, The collection chamber has a bottom plate, side plates, and a top plate. The inner wall of the side plates forms multiple buffer side walls. The auxiliary collection path collects waste through the drain holes on the bottom plate. The main collection path enters through the buffer side walls and collects waste based on negative pressure.

11. The screen glass edge grinding process based on the cooperation of air knife and water knife as described in claim 10, characterized in that, The feed inlet of the main collection path is located to the side and below the groove of the grinding wheel.

12. The screen glass edge grinding process based on the cooperation of air knife and water knife as described in claim 10, characterized in that, The multi-buffer sidewalls include at least a first buffer wall that is continuously forward and curved inward along the direction of the grinding section, and a second buffer wall that is curved along the first buffer wall and forms a backflow, wherein the first buffer wall and the second buffer wall form a continuous buffer.

13. The screen glass edge grinding process based on the cooperation of air knife and water knife as described in claim 1, characterized in that, The grinding wheel forms multiple grooves from top to bottom along its circumference, and the grinding wheel selects the corresponding grooves for grinding based on the up and down movement of the grinding wheel in the wheel cavity, and the upper and lower edges of the corners are ground simultaneously.

14. The screen glass edge grinding process based on the cooperation of air knife and water knife according to claim 1, characterized in that, The positioning unit includes a machine tool based on negative pressure adsorption and a power unit that drives the machine tool to rotate. The display glass protrudes from the edge of the machine tool from the side or diagonal to be ground. The transverse unit is a track-type moving module, and the machine tool can rotate synchronously when moving.

15. The screen display glass edge grinding process based on the cooperation of air knife and water knife as described in claim 1, characterized in that, The grinding units on both sides are adjusted based on the truss facing each other and synchronous displacement to match the edge grinding of different widths.

16. The screen glass edge grinding process based on the cooperation of air knife and water knife according to claim 1, characterized in that, When the display glass is square, the two opposite corners enter the notch to simultaneously complete the diagonal grinding at the corresponding rotation angle; and / or, when the display glass is rectangular, the two opposite corners enter the notch to sequentially complete the diagonal grinding at the corresponding rotation angle.

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