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

Abstract

The application discloses a display screen glass corner grinding process based on cooperation of air knives and water knives, which comprises the following steps: S1, positioning of the display screen glass; S2, first group of side edge grinding; S3, first group of diagonal grinding; S4, second group of side edge grinding; and S5, second group of diagonal grinding. In one aspect, no matter side edge grinding or diagonal grinding, the air knives are used to form an arc-shaped area with the center of the grinding wheel as the reference point, so that the grinding part is completely blocked, the water flow of the water knives is guided in a flowing manner through the grinding section, and the water flow and the waste are prevented from splashing outward, so that the waste and the grinding heat are removed, the grinding precision and quality are improved; in another aspect, based on grinding width adjustment and grinding angle setting, the side edge and the diagonal are ground in groups and in sequence, so that the edge and corner grinding of the display screen glass is efficiently completed, and the synchronous grinding is more favorable to side force control in the grinding, and the edge and corner damage rate caused by the grinding is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of glass processing, and particularly relates to a screen display glass corner grinding process based on cooperation of air knives and water knives. BACKGROUND

[0002] At present, in the produced screen electronic products, glass is the "basic framework" and "function extender" of the display screen: from the substrate of traditional LCD to the cover plate of modern mobile phone, from supporting display medium to integrating touch and packaging function, glass deeply participates in the performance improvement and form innovation of the display screen by virtue of its optical, mechanical and chemical properties, that is, without optimization and application of glass, modern high-definition, durable and multi-functional display screen is difficult to realize.

[0003] However, in the processing of the glass plate, the long side, short side and four corners of the glass need to be ground to eliminate the stress of the glass after cutting and remove the sharp corners and foreign matters of the cutting edge, therefore, a glass edge grinding and chamfering machine needs to be used, for example, a glass substrate grinding device disclosed in Chinese Patent No. CN118595942B includes a grinding shell and an upper water knife, a through slot suitable for continuously passing a single side of the glass substrate is formed in the grinding shell along a first horizontal direction; a grinding wheel is arranged in the grinding shell; a negative pressure interface is arranged on one side of the grinding shell, the negative pressure interface is used to connect an external device, and the interior of the grinding shell is in a negative pressure state; the upper air knife is arranged on the grinding shell, and a first air outlet is arranged on the inward side of the upper air knife along a second horizontal direction, the first air outlet is used to blow air to the upper surface of the single side of the glass substrate; the lower air knife is arranged on the grinding shell, and a second air outlet is arranged on the inward side of the lower air knife along the second horizontal direction, the second air outlet is used to blow air to the lower surface of the single side of the glass substrate; the lower air knife and the upper air knife are vertically symmetrically arranged at both ends of the through slot; and the upper water knife is used to spray water to the upper surface of the grinding area of the glass substrate. That is, by adopting the combination design of the through slot, the negative pressure interface and the water outlet in the glass substrate grinding device, the problem of overflow of grinding water is solved, the grinding water is ensured in the grinding area, and the grinding quality of the glass substrate and the quality of subsequent process treatment are improved. However, in the above implementation process, the following technical defects exist:

[0004] 1) The water knife adopted is a straight line type, and only a grinding section is formed between the grinding wheel groove and the contact part of the glass in the grinding process, so the water formed by the water knife can only hit the surface of the grinding wheel and cannot enter the grinding section, and part of the grinding waste is splashed into the grinding shell under the interception of the water knife, and the remaining part is thrown to the negative pressure interface and extracted, therefore, the glass edge of the grinding section cannot be simultaneously ground in the flowing water, the water flow formed by the water knife cannot drive the grinding waste to be thrown to the negative pressure interface, and a large amount of waste residues exist on the inner wall of the grinding shell, which will affect the grinding quality if falling on the grinding wheel, and high-frequency disassembly and cleaning are required, which is time-consuming and laborious;

[0005] 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.

[0006] 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

[0007] 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.

[0008] To achieve the above objectives, the present invention adopts the following solution:

[0009] 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:

[0010] S1, Display Glass Positioning

[0011] 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.

[0012] S2, First set of side grinding

[0013] 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.

[0014] S3, First group of diagonal grinding

[0015] Adjusting the grinding width, rotating the machine table so that the two opposite corners of the display glass face the two sides of the grinding path, and moving the machine table so that the two opposite corners enter the gap to complete the corner grinding at the corresponding rotation angle synchronously or sequentially;

[0016] S4, second group of side edge grinding

[0017] Rotating the machine table so that the second group of side edges is parallel to the grinding path, and repeating step S2;

[0018] S5, second group of corner grinding

[0019] Rotating the machine table so that the two opposite corners of the display glass face the two sides of the grinding path, and repeating step S3.

[0020] Preferably, in step S2, the lateral forces formed by the two groups of 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 are canceled out to reduce the breakage rate of the glass during grinding, while also improving the grinding accuracy and quality.

[0021] Further, in step S2, the direction of the force formed by the two groups of grinding units along the grinding path is the same as the direction of the movement of the display glass. The superimposed components can further push the glass forward, thereby implementing grinding more labor-saving and improving grinding efficiency.

[0022] According to one specific implementation and preferred aspect of the present application, the water outlet of the water jet is close to the first end, and in step S2, the direction of the water flow from the water jet is tangent to the grinding wheel. Based on the tangential entry of the water jet, it is easier to fit the wheel groove to flow into the grinding section.

[0023] Preferably, the water jet cooperates with the air knife to divide the water flow into two streams, the first stream fits the wheel groove and is thrown to the waste collection group after passing through the grinding section; the second stream flows to the surface of the glass and is thrown to the waste collection group with the rotation of the grinding wheel in the air knife barrier. Here, the cooperation of the air knife and the water jet can further realize the flushing of the grinding debris, not only avoiding the grinding dust to effectively remove the debris, but also having a cooling effect to reduce the edge breakage rate and improve the grinding quality.

[0024] In some specific embodiments, the second stream of water flows to the front and back surfaces of the glass, respectively, and fits the grinding wheel under the action of the upper and lower air knives. Not only the rotation of the grinding wheel carries away the debris, but also the water flow formed can further increase the water cooling effect of the grinding section.

[0025] Preferably, a dark groove is formed on the grinding seat and communicates with the wheel cavity and is tangent to the grinding wheel, wherein the dark groove is aligned with the wheel groove of the grinding wheel, the dark groove is communicated with the external water flow based on the dark groove, and the water flow sprayed from the dark groove forms a water knife. Based on the alignment of the dark groove and the wheel groove, the flow of the first water flow is more facilitated.

[0026] According to another specific implementation and preferred aspect of the present application, an upper air cavity and a lower air cavity are formed on the upper and lower parts of the gap, respectively, wherein the upper air cavity forms an upper air port that is inclined from top to bottom to the grinding wheel and gradually narrows the slit width; the lower air cavity forms a lower air port corresponding to the upper air cavity, and the air flow guided from the upper and lower air ports forms a secondary guide based on the glass surface to form the shunt and barrier of the water knife. The air flow is sprayed based on the pressurization of the upper and lower air ports to increase the sweeping and barrier capabilities of the air knife, and the air flow is folded after being blown to the surface, so that the area where the folded air flow is located is a barrier area, thereby improving the air resistance effect.

[0027] According to another specific implementation and preferred aspect of the present application, the waste collection group includes a collection bin opposite to the throwing end of the grinding wheel, a main collection path and an auxiliary collection path communicated with the collection bin, wherein in step S2, the waste part thrown to the collection bin is discharged from the main collection path, and the remaining part is discharged from the auxiliary collection path. Based on the cooperative collection of the main and auxiliary paths, the thrown waste is quickly collected to avoid the backflow of the waste to the wheel cavity, thereby improving the grinding quality.

[0028] Preferably, the collection bin has a bin bottom plate, a bin side plate, and a bin top plate, wherein the inner wall of the bin side plate forms a plurality of buffer side walls, the auxiliary collection path collects waste from the floor drain hole on the bin bottom plate, and the main collection path penetrates through the buffer side wall and collects waste based on negative pressure assistance. Based on the multi-buffering mode, the water flow is relieved, thereby increasing the collection efficiency and quality of the waste.

[0029] In some specific implementations, the inlet of the main collection path is located below the side of the wheel groove used for grinding. The main reason for this design is that once out of the limitation of the air knife, the water flow will flow from the wheel groove, so it is easier to throw into the main collection path in the centrifugal throwing, and the water flow flowing along the buffer side wall can also enter the main collection path, thereby increasing the waste collection capacity of the main path.

[0030] In some specific implementations, the plurality of buffer side walls at least include a first buffer wall that is curved inward along the throwing direction of the grinding part and continuously forward, and a second buffer wall that is curved along the first buffer wall and forms a backflow backward, wherein a continuous buffer is formed between the first buffer wall and the second buffer wall. Based on the two buffers, the water flow can be combed and more efficiently fall into the auxiliary path.

[0031] According to another specific implementation and preferred aspect of the present application, the circumferential self-top-down of the grinding wheel forms a plurality of wheel grooves, and the corresponding position wheel groove is selected 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 corner are synchronously ground. Here, based on the selection of the plurality of wheel grooves, not only the practicability of grinding (applicable to different thickness of glass) is increased, but also once a certain wheel groove is damaged, it can be flexibly selected, that is, strong flexibility.

[0032] According to another specific implementation and preferred aspect of the present application, the positioning unit includes a machine table based on negative pressure adsorption, a power device driving the self-rotation of the machine table, wherein the screen display glass protrudes from the edge of the machine table from the side to be ground or diagonally; the transverse moving unit is a track moving module, and when moving, the machine table can be synchronously rotated. Based on the principle of negative pressure adsorption, the stability of the glass positioning is maintained, and the glass flow operation is more convenient.

[0033] In addition, the two grinding units are adjusted by the synchronous displacement of the opposite trusses to match the grinding of the corners of different widths. In this way, the grinding center line formed will not change, thereby being more beneficial to the grinding implementation.

[0034] In some specific implementations, when the screen display glass is square, two diagonals enter the notch to synchronously complete the diagonal grinding at the corresponding rotation angle. When the screen display glass is rectangular, two diagonals enter the notch to complete the corner grinding at the corresponding rotation angle in sequence. In short, in the diagonal (here referring to the corner) grinding process, the commonly used grinding angle is, for example, 45°. When the screen display glass is square, after rotating 45°, the two corners are still in a symmetrical state, that is, the synchronous grinding of the two sides can be completed synchronously. When the screen display glass is rectangular, after rotating 45°, the two corners are in a relative misalignment state, that is, they can be arranged to be ground in sequence.

[0035] Due to the use of the above technical solutions, the present application has the following advantages compared with the prior art:

[0036] In the edge grinding of the existing screen display glass, firstly, the water jet used is linear, and only a grinding section is formed between the grinding wheel groove and the contact part of the glass in the grinding process, so the water formed by the water jet can only hit the surface of the grinding wheel and cannot enter the grinding section, and under the interception of the water jet, part of the grinding waste is splashed into the grinding shell, and the remaining part is thrown to the negative pressure interface for extraction, therefore, not only can the glass edge of the grinding section not be ground in the flowing water at the same time, but also the water flow formed by the water jet cannot drive the grinding waste to the negative pressure interface, and at the same time, a large amount of waste residues exist on the inner wall of the grinding shell, which will affect the grinding quality if falling on the grinding wheel, and high-frequency disassembly and cleaning are required, which is time-consuming and laborious; secondly, the air knife used is also linear, and its main function is to form a partition wall to avoid water and waste splashing and causing damage to the surface of the glass, and the air knife and the water jet do not cooperate in the grinding process, so high-quality grinding cannot be implemented, and the edge grinding breakage rate is high; finally, the general screen display glass is basically rectangular, therefore, if only single-side grinding is used, not only the efficiency is low, but also when the edge is ground, there is no glass surface to guide the water and air, so the water and air formed after hitting the grinding wheel will be chaotic, therefore, there is still a probability of splashing and causing damage to the surface of the glass, and other defects, and the screen display glass edge grinding process based on the cooperation of the air knife and the water jet is designed as a whole, which ingeniously solves the defects and shortcomings of the prior art, and after adopting the grinding process, firstly, the screen display glass is horizontally positioned on the machine table, the screen display glass is square, and has first and second groups of sides and first and second groups of opposite corners; secondly, the machine table is driven to enter the two notches along the length direction of the first group of sides at the same time, the glass edge is in contact with the wheel groove, and a grinding section with first and second end heads is formed in the air knife arc-shaped barrier based on the glass surface, and under the cooperation of the water and air knives, the water flow enters the grinding section from the first end head and is thrown to the waste collection group from the second end head with the rotation of the grinding wheel, and the synchronous grinding of the first group of sides is realized as the screen display glass advances; then, the machine table is rotated to make the two opposite corners of the screen display glass face the two sides of the grinding path, and the machine table is transversely moved to make the two opposite corners enter the notches to complete the edge grinding of the corresponding rotation angle at the same time or in sequence; then, the machine table is rotated to make the second group of sides parallel to the grinding path, and the first group of side grinding actions are repeated; finally, the machine table is rotated to make the two opposite corners of the screen display glass face the two sides of the grinding path, and the first group of corner grinding actions are repeated, so that the grinding of the first and second groups of sides and the first and second groups of opposite corners is completed, therefore, in the side or corner grinding of the present application, the air knife forms an arc-shaped area with the center of the grinding wheel as the reference to fully block the grinding part without dead angle, and the air knife assists the water jet to not only make the water flow of the water jet pass through the grinding section in a flowing manner, but also avoid the water flow and waste splashing outward, so as to take away the waste and grinding heat, and improve the grinding precision and quality.Another aspect is based on grinding width adjustment and grinding angle setting, grouping in turn side and diagonal grinding, not only high efficiency complete screen display glass edge grinding, and the use of synchronous grinding is more conducive to the control of lateral force in grinding, reduce the edge damage rate caused by grinding. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is the structure schematic view of the edge grinding equipment of the present application;

[0038] Figure 2 It is the front view schematic view of the present application; Figure 1

[0039] Figure 3 It is the top view schematic view of the present application; Figure 2

[0040] Figure 4 It is the structure schematic view of two grinding units in the present application; Figure 1

[0041] Figure 5 It is the structure schematic view of the grinding unit in the present application; Figure 4

[0042] Figure 6 It is the front view schematic view of the present application; Figure 5

[0043] Figure 7 It is the A-A direction cross-sectional view schematic view in the present application; Figure 6

[0044] Figure 8 It is the partial structure schematic view in the present application; Figure 5

[0045] Figure 9 It is the top view schematic view of the present application; Figure 8

[0046] Figure 10 It is the B-B direction cross-sectional view schematic view in the present application; Figure 9

[0047] Wherein: 1, positioning unit;10, machine table;11, power device;

[0048] 2, horizontal moving unit;

[0049] ​​​​​​​​​3, grinding unit; 30, grinding seat; 300, wheel cavity; 301, notch; 31, grinding wheel; m, wheel groove; 31a, grinding part; 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, collection main road; 342, collection auxiliary road;

[0050] B, screen display glass; H, truss. DETAILED DESCRIPTION

[0051] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0052] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0053] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] In some embodiments, the grinding unit 3 comprises a grinding base 30, a grinding wheel 31 forming wheel grooves m, an air knife 32, a water knife 33, and a waste collection group 34.

[0059] In this embodiment, the grinding base 30 has a wheel cavity 300 and a gap 301 intersecting through the wheel cavity 300 along a grinding path.

[0060] In this embodiment, the grinding wheel 31 is installed in the wheel cavity 300 and the grinding part 31a is located on the through path of the gap, and the circumferential direction of the grinding wheel 31 forms a plurality of wheel grooves m from top to bottom, and the grinding wheel 31 is selected based on the up-and-down movement of the grinding wheel 31 in the wheel cavity 300 to grind the corresponding position wheel groove m, and the upper and lower edges of the corner are synchronously ground. Here, based on the selection of the plurality of wheel grooves m, not only the practicability of grinding (suitable for different thickness of glass) is increased, but also once a certain wheel groove is damaged, it can be flexibly selected, that is, it has strong flexibility.

[0061] In this embodiment, the air knife 32 is distributed in an arc shape on the upper and lower sides of the gap 301 based on the center of the grinding wheel 31, wherein an upper air cavity 320 and a lower air cavity 321 are formed on the upper and lower parts of the gap 301, respectively, wherein the upper air cavity 320 is formed to be inclined from top to bottom to the grinding wheel 31, and the upper air port with gradually narrowing slit width; the lower air cavity 321 forms a lower air port corresponding to the upper air cavity 320, and the airflow guided from the upper and lower air ports is guided twice based on the surface of the glass to form the shunt and barrier of the water knife. The air flow is ejected based on the pressure increase of the upper and lower air ports to increase the sweeping and blocking ability of the air knife, and the air flow is blown to the surface after the upper and lower air flow, and the deflection air flow is generated, so that the area where the deflection air flow is located is a barrier area, thereby improving the air resistance effect.

[0062] In this embodiment, the water knife 33 is formed based on the wheel groove m and adheres to the grinding part 31a to form a water flow, specifically, the water flow direction of the water knife 33 is tangent to the grinding wheel 31. In this embodiment, a dark groove 330 is formed on the grinding base 30, which is in communication with the wheel cavity 300 and tangent to the grinding wheel 31, wherein the dark groove 330 is aligned with the wheel groove m of the grinding wheel 31, based on the dark groove 330 being in communication with the external water flow from the grinding base 30, and the water flow ejected from the dark groove 330 forms the water knife.

[0063] 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.

[0064] 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:

[0065] S1, Display Glass Positioning

[0066] 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.

[0067] S2, First set of side grinding

[0068] 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.

[0069] S3, First group of diagonal grinding

[0070] With the center line of the grinding path as the reference, the distance between the two grinding units 3 is adjusted to adjust the grinding width, and the rotating machine table 10 is rotated to make the two opposite corners of the display glass B face the opposite sides of the grinding path, and the machine table 10 is moved horizontally to make the two opposite corners enter the gap 301 to complete the corner grinding at the corresponding rotation angle synchronously or sequentially;

[0071] S4, second group of side edge grinding

[0072] With the center line of the grinding path as the reference, the distance between the two grinding units 3 is adjusted to adjust the grinding width, and the rotating machine table 10 is rotated to make the second group of side edges parallel to the grinding path, and the step S2 is repeated.

[0073] S5, second group of corner grinding

[0074] With the center line of the grinding path as the reference, the distance between the two grinding units 3 is adjusted to adjust the grinding width, and the rotating machine table 10 is rotated to make the two opposite corners of the display glass B face the opposite sides of the grinding path, and the step S3 is repeated.

[0075] In addition, in step S2, the lateral forces formed by the two groups of grinding units 3 cancel each other out. The lateral forces form components in the length direction and the width direction of the glass, wherein the components in the same direction are superimposed, and the components in the opposite directions are canceled out, so as to reduce the breakage rate of the glass during grinding, and also improve the grinding accuracy and quality. Further, in step S2, the direction of the force formed by the two groups of grinding units along the grinding path is the same as the moving direction of the display glass. The superimposed components can further push the glass forward, so as to implement grinding more labor-saving, and further improve the grinding efficiency. The water outlet of the water jet 33 is close to the first end, and based on the tangential entry of the water jet, it is easier to fit the wheel groove to flow into the grinding section. At the same time, under the cooperation of the air knife 32, the water flow is divided into two streams, the first stream fits the wheel groove and is thrown to the waste collection group 34 after passing through the grinding section; the second stream flows to the surface of the glass and is thrown to the waste collection group 34 by rotating with the grinding wheel 31 under the blocking of the air knife 32. Here, the cooperation of the air knife and the water jet can further be embodied to flush the generated debris during grinding, not only to effectively remove the debris, but also to have a cooling effect to reduce the edge breakage rate, and further improve the grinding quality. In some specific embodiments, the second stream of water flows to the front and back surfaces of the glass respectively, and fits the grinding wheel under the action of the upper and lower air knives. Not only the rotation of the grinding wheel can take away the debris, but also the formed water flow can further increase the water cooling effect of the grinding part.

[0076] In some embodiments, when the screen glass B is square, the two diagonal entry openings 301 are used to complete the diagonal grinding at the corresponding rotation angle synchronously. When the screen glass B is rectangular, the two diagonal entry openings 301 are used to complete the corner grinding at the corresponding rotation angle in sequence. In short, in the diagonal (herein referred to as corner) grinding process, the commonly used grinding angle is, for example, 45°. When the screen glass B is square, after being rotated by 45°, the two corners are still in a symmetrical state, that is, the synchronous grinding of the two sides can be completed synchronously. When the screen glass B is rectangular, after being rotated by 45°, the two corners are in a relative misalignment state, that is, the grinding can be arranged in sequence.

[0077] In summary, after adopting the grinding process, first, the screen display glass is horizontally positioned on the machine table, the screen display glass is square, and has first and second groups of sides and first and second groups of diagonals; second, the machine table is driven to enter the two notches along the length direction of the first group of sides synchronously, the glass edge contacts with the wheel groove, and a grinding section with first and second end heads is formed in the arc-shaped barrier of the air knife based on the glass surface, and under the cooperation of water and air knife, the water flow enters the grinding section from the first end head and is thrown to the waste collection group from the second end head with the rotation of the grinding wheel, and the screen display glass is pushed to realize synchronous grinding of the first group of sides; then, the machine table is rotated to make the two diagonals of the screen display glass face the two sides of the grinding path, and the machine table is transversely moved to make the two opposite diagonals enter the notches to complete the edge and corner grinding under the corresponding rotation angle synchronously or in sequence; then, the machine table is rotated to make the second group of sides parallel to the grinding path, and the first group of side grinding action is repeated; finally, the machine table is rotated to make the two diagonals of the screen display glass face the two sides of the grinding path, and the first group of diagonal grinding action is repeated, so that the grinding of the first and second groups of sides and the first and second groups of diagonals is completed, therefore, on the one hand, whether it is side or diagonal grinding, the arc-shaped area formed by the air knife with the center of the grinding wheel as the reference fully blocks the grinding part without dead angle, and the water flow of the water knife flows through the grinding section in a flowing manner under the assistance of the air knife, which not only avoids the splashing of the water flow and waste to the outside, but also carries away the waste and grinding heat, thereby improving the grinding accuracy and quality; on the other hand, based on the grinding width adjustment and grinding angle setting, the side and corner grinding is carried out in groups in sequence, which not only efficiently completes the edge and corner grinding of the screen display glass, but also the synchronous grinding is more conducive to the control of the lateral force in grinding, thereby reducing the edge and corner damage rate caused by grinding; thirdly, the lateral forces formed by the two groups of grinding units offset each other, and the lateral forces form components in the length and width directions of the glass, wherein the components in the same direction are superposed, and the direction of the force is the same as the moving direction of the screen display glass, so that the grinding is more labor-saving, thereby improving the grinding efficiency; the components in the opposite directions offset each other, so as to reduce the breakage rate of the glass during grinding, and also improve the grinding accuracy and quality; fourthly, the tangential entry of the water knife is easier to fit the wheel groove to flow into the grinding section, and the cooperation of the air knife and the water knife can flush the waste generated during grinding, which not only avoids the grinding dust to effectively remove the waste, but also has a cooling effect to reduce the edge breakage rate, thereby improving the grinding quality; fifthly, the airflow is ejected from the upper and lower air outlets to increase the sweeping and blocking ability of the air knife, and the airflow is deflected after being blown to the surface, so that the area where the deflected airflow is located is a blocking area, thereby improving the air resistance effect.The sixth aspect is based on the cooperation of the main and auxiliary roads to quickly collect the waste material thrown out to avoid the backflow of the waste material to the wheel cavity to cause the insufficient grinding quality. Once the waste material is out of the limit of the air knife, the water flow will flow from the wheel groove. Therefore, it is easier to throw into the main collection road in the centrifugal throwing, and the water flow flowing along the buffer side wall can also enter the main collection road, thereby increasing the waste material collection capacity of the main road. Moreover, the multi-channel buffer mode relieves the water flow from straying, thereby increasing the collection efficiency and quality of the waste material. The seventh aspect is based on the selection of multiple wheel grooves, which not only increases the practicability of grinding (suitable for different thicknesses of glass), but also allows flexible selection once a wheel groove is damaged, that is, strong flexibility. The eighth aspect is based on the principle of negative pressure adsorption to maintain the stability of the glass positioning. When moving, the machine table can be synchronously rotated, which is more convenient for glass flow operation. The ninth aspect is based on the truss facing and synchronous displacement adjustment of the two-sided grinding units to match the edge and corner grinding of different widths. In this way, the formed grinding center line does not change, thereby being more conducive to grinding implementation. The tenth aspect is during the diagonal (herein, referring to the corner) grinding process. Generally, the commonly used grinding angle is, for example, 45°. When the screen display glass is square, after rotating 45°, the two corners are still in a symmetrical state, that is, the synchronous grinding of the two sides can be completed simultaneously. When the screen display glass is rectangular, after rotating 45°, the two corners are in a relative misalignment state, that is, the grinding can be arranged in sequence.

[0078] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose of which is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A screen display glass corner grinding process based on the cooperation of air knives and water knives, the grinding equipment comprising a positioning unit, a transverse movement unit for driving the positioning unit to move along a grinding path, and two grinding units located on both sides of the grinding path and adjusted based on the width of the grinding path, the grinding unit comprising a grinding seat, a grinding wheel forming a wheel groove, an air knife, a water knife, and a waste collection group, characterized in that, The grinding seat has a wheel cavity, a gap intersecting through from one side of the wheel cavity along the grinding path, a grinding wheel installed in the wheel cavity and a grinding part on the through path of the gap, the air knives are distributed in an arc shape on the upper and lower sides of the gap with the center of the grinding wheel as the reference, the water knives form water flow in the wheel groove and adhere to the grinding part, and the process comprises the following steps: S1, screen display glass positioning The screen display glass is positioned horizontally on the machine table, the screen display glass is square-shaped and has a first and a second group of sides and a first and a second group of diagonals; S2, grinding of the first group of sides The grinding width is adjusted, the machine table is driven to enter the two gaps simultaneously along the length direction of the first group of sides, the screen display glass edge contacts the wheel groove and forms a grinding section with a first and a second end based on the screen display glass surface in the air knife arc-shaped barrier, and under the cooperation of the water and air knives, the water flow adheres to the grinding wheel and enters the grinding section from the first end and is thrown to the waste collection group from the second end with the rotation of the grinding wheel, and the screen display glass is pushed to realize the synchronous grinding of the first group of sides; S3, grinding of the first group of diagonals The grinding width is adjusted, the machine table is rotated so that the two diagonals of the screen display glass face the two sides of the grinding path, and the machine table is transversely moved so that the two diagonals facing each other enter the gap to complete the grinding under the corresponding rotation angle simultaneously or in sequence; S4, grinding of the second group of sides The machine table is rotated so that the second group of sides is parallel to the grinding path, and step S2 is repeated; S5, grinding of the second group of diagonals The machine table is rotated so that the two diagonals of the screen display glass face the two sides of the grinding path, and step S3 is repeated. 2.The screen glass corner grinding process based on the cooperation of air knives and water knives according to claim 1, wherein, In step S2, the lateral forces formed by the two groups of grinding units cancel each other out. 3.The screen glass corner grinding process based on the cooperation of air knives and water knives according to claim 1, wherein, In step S2, the direction of the force along the grinding path formed by the two groups of grinding units is the same as the direction of movement of the screen display glass. 4.The screen glass corner grinding process based on the cooperation of air knives and water knives according to claim 1, wherein, The water outlet of the water knife is close to the first end, and in step S2, the direction of the water flow from the water knife is tangent to the grinding wheel. 5.The screen glass corner grinding process based on the cooperation of air knives and water knives according to claim 4, characterized in that, Under the cooperation of the air knife, the water flow is divided into two streams, the first stream adheres to the wheel groove and is thrown to the waste collection group after passing through the grinding section; The second stream flows to the surface of the glass and is thrown to the waste collection group with the rotation of the grinding wheel under the barrier of the air knife. 6.The screen glass corner grinding process based on the cooperation of air knives and water knives according to claim 5, wherein, The second stream of water flows to the front and back surfaces of the glass respectively and adheres to the grinding wheel under the action of the upper and lower air knives. 7.The screen glass corner grinding process based on the cooperation of air knives and water knives according to claim 1, wherein, A dark groove is formed on the grinding seat and communicates with the wheel cavity and is tangent to the grinding wheel, the dark groove is aligned with the wheel groove of the grinding wheel, the dark groove communicates with the water flow from the outside based on the grinding seat, and the water flow from the dark groove forms a water knife. 8.The screen glass corner grinding process based on the cooperation of air knives and water knives according to claim 1, wherein, Upper and lower air cavities are formed on the upper and lower parts of the gap respectively, the upper air cavity forms an upper air outlet that is inclined from top to bottom towards the grinding wheel and gradually narrows, the lower air cavity forms a lower air outlet corresponding to the upper air outlet, and the air flow from the upper and lower air outlets forms secondary guidance based on the surface of the glass to form the water knife. 9.The screen glass corner grinding process based on the cooperation of air knives and water knives according to claim 1, wherein, The waste collection group includes a collection bin opposite the end part thrown by the grinding wheel, a collection main path and a collection auxiliary path communicating with the collection bin, and in step S2, the waste part thrown to the collection bin is discharged from the collection main path, and the remaining part is discharged from the collection auxiliary path. 10.The screen glass corner grinding process based on the cooperation of air knives and water knives according to claim 9, wherein, The collecting bin has a bin bottom plate, a bin side plate, and a bin top plate, wherein the inner wall of the bin side plate forms a plurality of buffer side walls, wherein the collecting auxiliary path collects waste from the floor drain hole on the bin bottom plate; the collecting main path penetrates through the buffer side wall and collects waste by suction based on negative pressure assistance. 11.The screen glass corner grinding process based on the cooperation of air knives and water knives according to claim 10, wherein, The inlet of the collecting main path is located below the side of the wheel groove used for grinding. 12.The screen glass corner grinding process based on the cooperation of air knives and water knives according to claim 10, wherein, The plurality of buffer side walls at least include a first buffer wall that curves forward and inward along the direction of the grinding part and a second buffer wall that forms a backflow along the first buffer wall and backward, wherein the first buffer wall and the second buffer wall form a continuous buffer. 13.The screen glass corner grinding process based on the cooperation of air knives and water knives according to claim 1, wherein, The circumferential direction of the grinding wheel forms a plurality of wheel grooves from top to bottom, and the corresponding position wheel groove is selected 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 corner are synchronously ground.

14. The screen display glass corner grinding process based on the cooperation of the air knife and the water knife, characterized in that, The positioning unit includes a machine table based on negative pressure adsorption and a power device that drives the machine table to rotate, wherein the screen display glass protrudes from the edge of the machine table on the side to be ground or diagonally; the transverse moving unit is a track moving module, and when moving, the machine table can rotate synchronously. 15.The screen glass corner grinding process based on the cooperation of air knives and water knives according to claim 1, wherein, The two grinding units are adjusted by the synchronous and opposite displacement of the truss to match the grinding of corners with different widths. 16.The screen glass corner grinding process based on the cooperation of air knives and water knives according to claim 1, wherein, When the screen display glass is square, two opposite corners enter the notch to synchronously complete the diagonal grinding at the corresponding rotation angle; and / or, when the screen display glass is rectangular, two opposite corners enter the notch to successively complete the diagonal grinding at the corresponding rotation angle.

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