A quenching air grid uniform distribution process for toughened glass

Abstract

The application relates to a quenching air grid uniform distribution process of toughened glass, and belongs to the technical field of glass toughening processes. The process is characterized in that: firstly, a continuous air receiving envelope formed by each row of air nozzles is marked on a glass bearing position by using a calibration sheet, and the glass profile is superposed to determine the edge band according to the vertical span of the adjacent air receiving envelopes; secondly, the glass profile is divided into a middle reference area, a single-edge transition area and an angle coupling area according to the number of edge bands belonging to each area, and the reference opening degree, the opening degree gradually reduced row by row towards the edge and the opening degree gradually reduced row by row towards the angle point from the smaller last row opening degree of the adjacent transition area are respectively set in the same step, and the reduced air supply is distributed back to the middle reference area from the glass center under the condition that the total air supply is unchanged; subsequently, the opening degrees of the areas are correspondingly set on the upper and lower air grids, so that the glass is coincided with the calibration profile and is synchronously quenched. The process makes the partition boundary correspond to the actual air receiving range, and makes the air distribution of each area keep continuous correlation.

Description

Technical Field

[0001] This invention belongs to the field of glass tempering technology, specifically relating to a process for uniformly distributing rapid cooling air grids in tempered glass. Background Technology

[0002] Tempered glass is typically manufactured using a physical tempering process. This involves first heating the glass to near-softness, then rapidly feeding it into a quenching section. Cooling airflow is blown onto the glass surface through air ducts located on the top and bottom sides, causing the surface layer to contract before the interior and develop compressive stress upon cooling. The quenching section of a horizontal tempering machine generally includes a conveyor roller conveyor, an upper air duct, and a lower air duct. Each air duct consists of multiple rows of ducts or air boxes, with multiple nozzles facing the glass in each row. During production, the air supply, air duct positions, and nozzle openings are usually set according to the type, thickness, and specifications of the glass. Nozzles in the same row or group often have the same opening. When changing glass specifications, the nozzles used for blowing are generally determined on-site based on the glass shape and nozzle arrangement. Experience is used to close nozzles outside the glass outline or reduce the size of several rows of nozzles near the glass periphery. During quenching, the glass may remain stationary on the roller conveyor, be conveyed forward, or move back and forth, with the lower surface of the glass simultaneously supported and shielded by the conveyor rollers.

[0003] During actual air blowing, the airflow from the nozzle has a certain effective range on the glass surface. Adjacent airflows may overlap, diffuse, and bounce. This effective range is difficult to determine directly from the nozzle orifice diameter or arrangement and varies with the position of the air grid, the combined blowing state of adjacent nozzles, and the glass's placement. When the glass specifications, contours, or movement range change, the airflow from the same nozzle may act entirely on the center of the glass, or it may cross one glass edge or simultaneously approach two adjacent glass edges. The center of the glass primarily dissipates heat through the upper and lower surfaces, while the edges can also dissipate heat through the sides. The corners are affected by two sides simultaneously, and the bounced airflow from the edges and corners is more easily expelled outwards. Meanwhile, airflows that extend beyond the glass contour, the overlapping effects of adjacent airflows, and the obstruction of the airflow below by the conveyor rollers further alter the local cooling intensity. Therefore, equal airflow does not equate to equal-speed cooling of all parts of the glass. When adjusting the airflow according to fixed nozzle arrays or empirical positions, it is difficult to form an executable airflow boundary based on the actual airflow range of the glass surface. Furthermore, the adjustments of each part are easily disconnected from each other, resulting in uneven cooling connection between the center, edges, corners, and upper and lower surfaces, as well as an overall imbalance in airflow distribution. Ultimately, this may lead to differences in internal stress, stress spots, warping, inconsistent fragmentation, and increased ineffective airflow that extends beyond the glass contour. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides a process for uniformly distributing rapid cooling air grates on tempered glass. This process solves the problem that existing rapid cooling air grates cannot form an executable zoned air distribution relationship based on the actual wind-receiving range of the glass surface, resulting in uneven cooling connections in the middle, edges, corners, and upper and lower surfaces, accompanied by an overall imbalance in air supply distribution.

[0005] The objective of this invention can be achieved through the following technical solution: a process for uniformly distributing rapid cooling air grids in tempered glass, comprising the following steps: S1. Lay a calibration plate that can show the wind boundary at the glass bearing position, put the wind grid in the rapid cooling position and test blow each exhaust nozzle in turn, mark the continuous wind envelope formed by each exhaust nozzle; superimpose the outline of the glass to be tempered on the calibration plate, and translate each glass edge inward according to the span of the wind envelope adjacent to that edge in the direction perpendicular to that edge to form a partition line, and the glass edge and the corresponding boundary line form a side band; S2. Based on the number of side zones in each area, complete the zoning and air distribution: designate the area within the glass outline that does not belong to a side zone as the central reference zone, and set the nozzle opening according to the predetermined rapid cooling requirements; designate the area belonging to only one side zone as the single-side transition zone, and gradually reduce the nozzle opening from the zoning boundary to the glass edge; designate the overlapping area of ​​two adjacent side zones as the corner coupling zone, and take the smaller of the last row nozzle openings of the two adjacent single-side transition zones closest to the corner as the starting opening, and gradually reduce it towards the corner; keep the total air supply unchanged, and distribute the reduced air supply from the single-side transition zone and the corner coupling zone back to the central reference zone in the order from the center of the glass outward; S3. Set the central reference zone, single-sided transition zone, corner coupling zone, and the opening of the nozzles in each zone on the upper and lower wind grids accordingly. S4. Move the glass to be tempered to a position that coincides with the calibration profile; S5. Simultaneously open the upper and lower air grilles to complete rapid cooling.

[0006] Furthermore, the calibration plate surface is provided with a flexible wind-sensing layer that can bend with the airflow, and the wind envelope is marked by the outer edge of the continuously bending area of ​​the flexible wind-sensing layer.

[0007] Furthermore, the windward envelopes of the upper and lower wind grates are respectively marked, and the merging envelopes covering the outer edges of both are used to determine the partition boundary.

[0008] Furthermore, for the hypotenuse or curved edge, the local vertical direction is determined segment by segment along the glass edge, forming the partition boundary lines respectively, and the adjacent partition boundary lines are connected smoothly.

[0009] Furthermore, within the single-sided transition zone, the wind deflector located on the air outlet side of the vent is moved to block the side where the wind envelope extends beyond the glass outline.

[0010] Furthermore, the row of nozzles closest to the bisector direction is closed within the corner coupling zone to create a continuous gap for the rebound airflow to exit.

[0011] Furthermore, when adjusting the air supply volume, priority should be given to increasing the opening of the air nozzles in the central reference zone where the wind envelope is not completely covered by the adjacent wind envelope.

[0012] Furthermore, when the conveyor roller blocks the air envelope of the lower air grid nozzle, the opening of the corresponding upper nozzle is reduced simultaneously, and the reduced air supply is redistributed to the adjacent upper and lower corresponding nozzles in the same area.

[0013] Furthermore, when the tempered glass is rapidly cooled back and forth, its contours at both ends of the back and forth motion are superimposed on the calibration plate, and the area formed by the combination of the two contours and the sweep range between them is divided into zones.

[0014] Furthermore, when continuously processing glass of different specifications, a replaceable positioning template that is consistent with the outline of each specification of glass and shares the same glass bearing position positioning reference is stacked on the calibration plate. When changing specifications, the positioning template is replaced and only the air nozzles in the corresponding areas are reset.

[0015] The beneficial effects of this invention are as follows: This invention uses the continuous wind envelope formed by the air grates at the actual rapid cooling position as the basis for zoning, so that the glass outline, zoning boundary lines and the actual effective range of air blown by adjacent air nozzles correspond. The number of edge bands directly distinguishes the central reference zone, the single-sided transition zone and the corner coupling zone. Under the same zoning logic, a reference opening degree, an opening degree that decreases row by row towards the edge, and an opening degree that continues to decrease from the smaller opening degree of the adjacent last row towards the corner are set, so that the air distribution of the three regions of the central reference zone, the single-sided transition zone and the corner coupling zone can be mutually supported. By redistributing the reduced air supply from the edge and corner to the central reference zone from the center outward under the condition of constant total air supply, and setting the three regions of the central reference zone, the single-sided transition zone and the corner coupling zone and their opening degrees correspondingly on the upper and lower air grates, the sudden change in air distribution of adjacent parts can be reduced without increasing the total air supply, the air distribution connection between each region and the upper and lower surfaces can be maintained, and the ineffective air supply beyond the glass outline can be reduced. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a flow chart of the process for uniformly distributing the rapid cooling air grid in the tempered glass of the present invention. Detailed Implementation

[0018] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0019] Currently, during actual air blowing, the airflow from the nozzles has a certain effective range on the glass surface. Adjacent airflows also overlap, diffuse, and bounce. This effective range is difficult to determine directly by the nozzle orifice diameter or arrangement and varies with the position of the air grid, the combined blowing state of adjacent nozzles, and the glass's placement. When the glass specifications, contours, or movement range change, the airflow from the same nozzle may act entirely on the center of the glass, or it may cross one glass edge or simultaneously approach two adjacent glass edges. The center of the glass primarily dissipates heat through the upper and lower surfaces, while the edges can also dissipate heat through the sides. The corners are affected by two sides simultaneously, and the bounced airflow at the edges and corners is more easily discharged outwards. Simultaneously, airflows exceeding the glass contour, the overlapping effect of adjacent airflows, and the obstruction of the airflow below by the conveyor rollers further alter the local cooling intensity. Therefore, equal airflow does not equate to equal-speed cooling of all parts of the glass. When adjusting the airflow according to fixed nozzle arrays or empirical positions, it is difficult to form an executable airflow boundary based on the actual airflow range of the glass surface. Furthermore, the adjustments of each part are easily disconnected from each other, resulting in uneven cooling connection between the center, edges, corners, and upper and lower surfaces, as well as an overall imbalance in airflow distribution. Ultimately, this may lead to differences in internal stress, stress spots, warping, inconsistent fragmentation, and increased ineffective airflow that extends beyond the glass contour.

[0020] Please see Figure 1As shown, this embodiment provides a process for uniformly distributing quenching air grids for tempered glass. To solve the problem that existing quenching air grids are difficult to form an executable zoned air distribution relationship based on the actual wind range of the glass surface, resulting in uneven cooling connection of the middle, edge, corner, and upper and lower surfaces and accompanied by an overall imbalance in air supply distribution, step S1 is first executed to place the air grid in the actual quenching position. A calibration sheet is laid on the glass bearing position and each row of air nozzles is tested in sequence. The continuous wind envelope is marked according to the outer edge shown after the combined action of each row of air nozzles. Then, the outline of the glass to be tempered is superimposed on the same calibration sheet. The span of the wind envelope adjacent to each glass edge along the direction perpendicular to that edge is used as the basis for inward movement to form the zone boundary and edge band. Subsequently, in step S2, the zoning and air distribution are completed one by one according to the number of sidebands belonging to each position: the part that does not belong to a sideband is designated as the central reference zone, the part that belongs to a sideband is designated as the single-side transition zone, and the area belonging to the overlapping part of two adjacent sidebands is designated as the corner coupling zone; the central part adopts a predetermined rapid cooling opening, the opening of the single-side area decreases row by row from the boundary to the edge, and the corner area continues to decrease row by row from the smaller of the last row openings of the two adjacent single-side areas towards the corner point, and the reduced air supply is distributed back to the central part from the center of the glass outwards under the condition that the total air supply remains unchanged. Finally, steps S3 to S5 are executed to set the same three zones and opening relationship to the upper and lower air grilles, so that the glass coincides with the calibration contour and is rapidly cooled synchronously, thereby forming a continuous process chain of zoning, regional air adjustment, total connection and upper and lower correspondence.

[0021] It should be noted that this process is designed this way because the nozzle position can only indicate the starting point of the airflow, and cannot directly indicate the actual coverage boundary after multiple airflows reach the glass bearing surface. The middle of the glass is only cooled by the upper and lower surfaces, the position near one side also has single-sided edge cooling, and the corner is affected by two adjacent sides at the same time. The three types of positions have different cooling conditions. Therefore, the starting point for division is the wind envelope obtained from actual test blowing, rather than a fixed arrangement. The number of times a point enters the side zone indicates how many glass edges it is affected by. The three zones—the central reference zone, the single-sided transition zone, and the corner coupling zone—are naturally obtained from the superposition of the actual airflow range and the glass profile. During implementation, the position of each exhaust nozzle and its wind envelope are preserved on the calibration sheet. The full-size glass profile is stacked according to the actual load-bearing reference. The span of adjacent envelopes is transferred inward along the local vertical direction and connected to the boundary line. Then, the areas that do not enter the side zone, enter one side zone, and enter two adjacent side zones are marked respectively. The zone projection return air nozzles are then arranged, and the area to which each nozzle belongs is determined by the area where the center of the wind envelope of each nozzle is located. Adjacent nozzles that cross the boundary line are set in a continuously decreasing order from the center to the edge. The corner is adjusted starting with the smaller of the opening of the two adjacent last rows, which can avoid a sudden increase in airflow when entering the corner from any adjacent side zone. The reduced airflow is distributed back to the center and spread outward from the center, so that the local air reduction does not disrupt the overall air supply relationship.

[0022] Based solely on the steps defined in the above embodiments, this process determines the zone boundaries by adjusting the actual airflow envelope according to the rapid cooling position of the air grates, the common airflow state of the air nozzles, and the glass contour, thereby reducing boundary deviations caused by fixed air nozzle rows. By gradually reducing airflow in the single-sided transition zone and by having the corner coupling zone receive the smaller opening of the adjacent last row, the air distribution between the center, edges, and corners changes continuously, avoiding the simple superposition of the two edge adjustments at the corners. By maintaining the total air supply and redistributing the reduced air supply from the center outwards to the central reference zone, the local adjustment is kept in relation to the overall air supply. By using corresponding areas and openings for the upper and lower air grates and simultaneously rapidly cooling them at the calibrated positions, both sides of the glass receive cooling according to the same zoning relationship, thus reducing the cooling differences between areas and between the upper and lower surfaces.

[0023] After establishing the above calibration relationship, the first issue to address is the difficulty in stably observing the outer edge of the wind envelope. The diffusion edge of colorless airflow lacks a fixed physical boundary; if lines are drawn solely based on wind sound, touch, or the projected position of the nozzle, different operators are prone to obtaining different results. Therefore, in one embodiment, a flexible wind-sensing layer that can collapse with the airflow is provided on the surface of the calibration sheet. During test blowing, the flexible wind-sensing layer, subjected to continuous airflow, collapses in the direction of the airflow, while the portion not subjected to continuous action remains unchanged. The outer edge of the continuously collapsed area is used to draw the wind envelope. This design transforms the airflow range, which cannot be directly observed, into a planar contour that can be drawn, preserved, and verified, allowing the partitioning basis of step S1 to be repeatedly obtained.

[0024] Further, based on visual calibration, the airflow paths from the upper and lower air grates to the glass bearing surface, as well as the obstruction conditions of the lower conveyor rollers, are not entirely the same. When dividing the area using only one side's wind envelope, the airflow on the other side may exceed the obtained boundary, thus weakening the upper-lower correspondence of S3. To address this difference, in one embodiment, the wind envelopes of the upper and lower air grates are calibrated separately, and the combined envelope that can cover the outer edges of both is used to determine the partition boundary, ensuring that the outer edge of either side actually reaching the glass bearing surface is included in the same partitioning criterion. This establishes a common boundary for the upper and lower air grates, reducing the possibility of cross-boundary airflow after partitioning by a single-sided envelope.

[0025] For contour adaptation, the vertical direction of rectangular glass can be directly determined along each straight edge, while the edge direction of the hypotenuse or curved edge will change with position. If it is still moved inward as a whole along the fixed direction of the equipment, the resulting edge band will have distortion in width at the turning point, thus causing the same actual windward span to be divided into different areas. To solve this problem, in one embodiment, the local vertical direction is determined segmentally along the hypotenuse or curved edge, and the partition boundary is formed according to the span of the adjacent windward envelope, and then the adjacent boundary lines are continuously connected. This design makes the boundary line change with the direction of the glass edge, ensuring that the irregular contour still uses the same physical division basis as the straight edge, and reducing the reversal or interruption of the boundary line.

[0026] After the contour boundary adaptation is completed, some wind envelopes within the unilateral transition zone may still only partially fall within the glass. If the corresponding nozzle opening is reduced overall, the effective portion falling within the glass will weaken simultaneously, while the side extending beyond the contour will still experience outward escape and rebound. In one embodiment, to address this, A wind deflector is moved to the air outlet side of the vent, so that it blocks the wind envelope extending beyond the glass contour along the glass edge, while maintaining an air outlet path towards the inside of the glass. This reduces ineffective airflow outside the contour while implementing a unilateral transition zone of reduced air distribution, allowing the retained airflow to act more concentratedly within the glass area.

[0027] Unlike the single-sided transition zone, the corner coupling zone simultaneously receives airflow changes from two adjacent sides. Airflows from both directions converge near the corner and are prone to rebound. When all nozzle rows are continuously blowing, the rebounding airflow lacks a continuous exhaust path, potentially creating a repetitive effect at the corner. To address this issue, in one embodiment, the nozzle row passing through the corner coupling zone and closest to the angle bisector is closed. The space left after this row stops blowing creates a continuous gap, allowing the rebounding airflow from both sides to exit along the gap. This design mitigates airflow convergence while maintaining a decreasing relationship on both sides of the corner, reducing repetitive impacts near the corner.

[0028] Subsequently, it is also necessary to avoid creating new disparities in air supply and return distribution in the central area. The overlap of the wind envelopes within the central reference zone is not uniform. Locations already fully covered by adjacent envelopes receive multiple airflows. If the reduced air supply is evenly distributed across all central nozzles, the fully covered locations may again experience concentrated airflow. Therefore, in one embodiment, the opening of nozzles whose wind envelopes are not fully covered by adjacent envelopes is preferentially increased, allowing the return airflow to first fill the relatively insufficiently covered areas. This sequence does not change the total air supply or the outward return distribution direction specified above, and it reduces disturbances to the existing wind supply relationships in the central area.

[0029] Meanwhile, when the conveyor rollers support the glass, they partially block the airflow below, preventing the corresponding lower air grille's air envelope from fully acting on the glass. If the corresponding upper air nozzles maintain their original opening, the effective airflow at the same location on the glass will be deviated. To address this obstruction, in one embodiment, the opening of the corresponding upper air nozzles is simultaneously reduced, and the reduced airflow is redistributed to adjacent upper and lower corresponding air nozzles within the same area. This ensures that the obstructed area no longer receives strong airflow solely from above, but rather the airflow is redirected to a nearby, effectively functioning location. This design balances the continuity of airflow within the same area with the vertical alignment, reducing the localized cooling differences between the two sides caused by the conveyor rollers' obstruction.

[0030] When the process employs reciprocating rapid cooling, the position of the glass relative to the air nozzle continuously changes. If only the contour of one stationary position is used for partitioning, the edge of the glass may cross the original partition boundary when it reaches the other end, causing the same position to repeatedly change its regional properties during the reciprocating process. Therefore, in one embodiment, the contours of the glass at both ends of the reciprocating motion are superimposed, and the two contours, along with the sweeping range traversed along the reciprocating direction, are combined to form a merged range. Partitioning is then completed according to this merged range. This allows the entire reciprocating stroke to share a common set of regional boundaries, avoiding the limitation to only a single end position, and eliminating the need to change the predetermined air distribution during rapid cooling.

[0031] Finally, in continuous specification change production, redrawing the entire outline and resetting all air nozzles each time not only increases the workload of changeover but may also alter the existing settings of areas unaffected by specification changes. To address this end-application problem, in one embodiment, a replaceable positioning template is provided for each glass specification, consistent with its outline and sharing the same glass bearing position positioning reference. When changing specifications, the corresponding templates are stacked on the calibration sheet according to the same reference, and only the air nozzles whose area assignment has changed due to the new outline are reset, while the remaining air nozzles retain their original settings. This preserves the existing air distribution relationship of unchanged areas, reduces repetitive operations, and improves the reproducibility of zoning positions when processing the same specification again.

[0032] Working principle and usage process of this invention: The working principle of this invention is as follows: When the air grates are in the actual rapid cooling position, the continuous airflow envelope formed by each exhaust nozzle on the glass bearing surface already includes the combined effects of nozzle arrangement, air outlet distance, and overlapping diffusion of adjacent airflows. After converting the span of this envelope in the vertical direction of the glass edge into a side band, the actual positions of not entering the side band, entering one side band, or entering two adjacent side bands correspond to being far from the side edge, close to one side edge, and simultaneously close to two side edges, respectively. The resulting three regions are continuously generated by the superposition relationship of the same envelope and contour. The reference opening, the gradual decrease towards the edge, the continued decrease from the smaller opening of the adjacent last row towards the corner, and the central return distribution under a fixed total air supply volume connect the three zones into a continuous relationship. The corresponding setting of the upper and lower air grates applies this relationship to both sides of the glass simultaneously.

[0033] The usage process of this invention is as follows: First, lay out the calibration sheet according to the position of the air grates during the actual rapid cooling, test blow each exhaust nozzle in sequence, and mark the continuous air envelope; then, superimpose the outline of the glass to be processed according to the actual load-bearing benchmark, and make the partition boundaries and edge bands along the local vertical direction on each side. Mark the central benchmark area, single-sided transition area, and corner coupling area according to the number of edge bands, and project the three areas onto the corresponding air nozzles; then set the central benchmark opening, and set the decreasing opening of the single side and corner in sequence, check the reduced air supply volume, and return it to the center in the order from the center outwards, and then set the same area and opening correspondingly on the upper and lower air grates; after completing the calibration, remove the calibration sheet, send the heated glass to the position that coincides with the calibration outline, and simultaneously open the upper and lower air grates to complete the rapid cooling. When processing irregularly shaped, reciprocating, or different specifications of glass, first update the outline or air envelope according to the corresponding subordinate scheme, and then implement it in the above order.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A process for uniformly distributing rapid cooling air grids in tempered glass, characterized in that, Includes the following steps: S1. Lay a calibration plate that can show the wind boundary at the glass bearing position, put the wind grid in the rapid cooling position and test blow each exhaust nozzle in turn to mark the continuous wind envelope formed by the exhaust nozzles; superimpose the outline of the glass to be tempered on the calibration plate, and translate each glass edge inward according to the span of the adjacent wind envelope in the direction perpendicular to the edge to form a partition line, and the glass edge and the corresponding boundary line form a side band. S2. Based on the number of side zones in each area, complete the zoning and air distribution: The area within the glass outline that does not belong to a side zone is designated as the central reference zone, and the nozzle opening is set according to the predetermined rapid cooling requirements; the area belonging to only one side zone is designated as the single-side transition zone, and the nozzle opening is gradually reduced from the zoning boundary to the glass edge; the overlapping area of ​​two adjacent side zones is designated as the corner coupling zone, and the smaller of the last row nozzle opening of the two adjacent single-side transition zones near the corner is used as the starting opening, and it is gradually reduced towards the corner, keeping the total air supply unchanged. The reduced air supply in the single-side transition zone and the corner coupling zone is distributed back to the central reference zone in the order from the center of the glass outward. S3. Set the central reference zone, single-sided transition zone, corner coupling zone, and the opening of the nozzles in each zone on the upper and lower wind grids accordingly. S4. Move the glass to be tempered to a position that coincides with the calibration profile; S5. Simultaneously open the upper and lower air grilles to complete rapid cooling.

2. The process for uniformly distributing rapid cooling air grids in tempered glass according to claim 1, characterized in that, The calibration plate has a flexible wind-sensing layer on its surface that can bend with the airflow, and the wind envelope is marked by the outer edge of the continuous bending area of ​​the flexible wind-sensing layer.

3. The process for uniformly distributing rapid cooling air grids in tempered glass according to claim 1, characterized in that, The windward envelopes of the upper and lower wind grates are marked separately, and the boundary of the partition is determined by the combined envelope formed by the outer edges of the two.

4. The process for uniformly distributing rapid cooling air grids in tempered glass according to claim 1, characterized in that, For inclined or curved edges, the local vertical direction is determined by segmenting along the glass edge, forming the partition boundaries and connecting the adjacent partition boundaries.

5. The process for uniformly distributing rapid cooling air grids in tempered glass according to claim 1, characterized in that, The wind deflector located on the air outlet side of the vent is moved within the single-sided transition zone to block the side of the wind envelope that extends beyond the glass outline.

6. The process for uniformly distributing rapid cooling air grids in tempered glass according to claim 1, characterized in that, Close the row of nozzles closest to the bisector of the angle within the corner coupling zone to create a continuous gap for the rebounding airflow to exit.

7. The process for uniformly distributing rapid cooling air grids in tempered glass according to claim 1, characterized in that, When adjusting the air supply volume, prioritize increasing the opening of the nozzles in the central reference zone where the wind envelope is not completely covered by the adjacent wind envelope.

8. The process for uniformly distributing rapid cooling air grids in tempered glass according to claim 1, characterized in that, When the conveyor roller blocks the air envelope of the lower air grid nozzle, the opening of the corresponding upper air nozzle is reduced simultaneously, and the reduced air supply is redistributed to the adjacent upper and lower corresponding air nozzles in the same area.

9. The process for uniformly distributing rapid cooling air grids in tempered glass according to claim 1, characterized in that, When the tempered glass is rapidly cooled back and forth, its contours at both ends of the back and forth motion are superimposed on the calibration plate, and the area of ​​the combined contours is divided into zones.

10. The process for uniformly distributing rapid cooling air grids in tempered glass according to claim 1, characterized in that, When continuously processing glass of different specifications, a replaceable positioning template consistent with the outline of each specification of glass is stacked on the calibration sheet. When changing specifications, the positioning template is replaced and only the air nozzles in the corresponding areas are reset.

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