RU2818359C2 - Equipment for bent glass tempering with possibility of hardening spots weakening - Google Patents

Abstract

FIELD: glass.

SUBSTANCE: group of inventions relates to tempering of bent glass on flexible rollers. Equipment for bent glass tempering includes flexible blowing grate consisting of one or more units of flexible blowing grate. Unit of the flexible blowing grate is a through bent tubular structure. At the same time in the above unit of the flexible blowing grate there are multiple air outlets and air intakes interconnected with its inner space, and the above air outlets open onto the processed glass. Axial ends of the said unit of the flexible blowing grate are closed.

EFFECT: increased efficiency of hardening spots weakening.

20 cl, 15 dwg

Description

Technical field

The invention relates to the field of tempering of curved glass on flexible rollers, namely to equipment for tempering of curved glass with the ability to weaken the tempering spots.

State of the art

In the tempered glass manufacturing process, the glass is heated in a roller furnace and then enters the tempering section, but due to uneven air flow during the tempering process, residual stress marks (known as “tempering spots”) often appear on the glass. As an indicator of the appearance quality of tempered glass, tempering spots are attracting more and more attention. In order to minimize hardening spots, specialists in this industry use various methods, such as accelerating the unloading of glass from the furnace, optimizing the layout of blowing holes, and lateral vibration of blowing grids. However, the reasons for the formation of quench spots are quite complex, it is necessary to provide uniform cooling across the width of the equipment, but more importantly, it is necessary to prevent the formation of quench spots along the length of the equipment. To this day, tempering spots are still a defect in tempered glass. People are eagerly waiting for better technology to weaken the temper marks and give tempered glasses a better appearance.

A known method for forming bent glass on flexible rollers is to bend the flexible rollers of the roller conveyor in a direction perpendicular to the direction of movement of the roller conveyor, and to provide bending mechanisms at the two ends of parallel installed flexible rollers, located parallel to the flexible rollers in the axial direction. Both ends of the plurality of main air ducts are fixed in the racks of the bending mechanisms, respectively, in appropriate places, the flexible rollers and the main air ducts are located perpendicular to each other; The main air ducts are alternately equipped with blowing boxes corresponding to the gaps between the flexible rollers, the blowing boxes are floors and communicate with the main air ducts, the air flow, leaving the main air duct, passing through the blowing box, blows the tempered curved glass from the outlet of the blowing box. In order to ensure uniform airflow during the bending process, most known technologies install rows of blower boxes on the blower profile, with multiple rows of blower boxes located in the gaps between the flexible rollers. As shown in FIG. 1, the main reason for the occurrence of residual stress marks is that when using blowing boxes and blowing grids, the presence of gaps between the blowing boxes may cause obvious residual stress marks to appear on the glass, which seriously affects the aesthetics of the glass and the effect of its use.

The flexible roller bent glass tempering furnace is composed of a loading table, heating furnace, bending and tempering section, unloading table, etc., all working sections are connected by a conveyor roller table with transport surfaces at the same height, forming a production line.

During operation, the glass is placed on the loading table and fed by a roller conveyor into the heating furnace; after heating to the required temperature, it is fed by the roller conveyor to the bending and tempering section, where the glass is bent and takes the desired shape, then cooled by air from the blowing grids and becomes tempered glass, which is guided by the roller conveyor. onto the unloading table, thus completing the work cycle.

The above-described bending and hardening section consists of a bending roller conveyor, main air ducts, a roller conveyor drive system, bendable blowing grids, a blowing grid drive, a bed, a control system, etc.; Before bending and cooling the glass, bendable blowing grids can be pre-bent to obtain the required glass shape in order to more evenly cool the glass, therefore, provide a more uniform stress on the surface and inside the glass; It is also possible to bend the upper and lower blowing grids simultaneously with the bending roller table, then blow the upper and lower surfaces of the glass, ultimately meeting the quality requirements of tempered glass. To ensure bending, known bendable blower grilles consist of a plurality of individual blower boxes installed on the main air ducts; under the action of the bending mechanism, the main air ducts bend, therefore, the rows of blower boxes also bend, acquiring the desired glass shape, as shown in Fig. 2.

However, these blower grids with separate blower boxes have different air pressure at each air outlet and the gaps between the blower boxes, which leads to uneven cooling of the curved glass, hence the appearance of obvious traces of residual stress (hardening spots) on the processed tempered glass in the gaps between blowing boxes, seriously affecting the appearance quality of tempered glass products. This is a technical problem that urgently needs to be addressed in the industry.

The essence of the invention

To solve the technical problem, the present invention provides the following technical solution:

Equipment for tempering bent glass with the ability to weaken hardening spots, designed for tempering bent glass on flexible rollers, includes a flexible blowing grid consisting of one or multiple flexible blowing grid blocks, the said flexible blowing grid block is a through bendable tubular structure, with in this case, in the said flexible blowing grille block there are a plurality of air outlets and air intakes communicating with its internal space, the said air outlets open onto the glass being processed;

Further, a plurality of said flexible blowing grid units are installed in parallel between the flexible rollers of the roller conveyor, said main air ducts are located on the side of the flexible blowing grid unit remote from the glass being processed, projections of the parallel installed main air ducts and the plurality of said parallel installed flexible blowing grid blocks in the vertical direction form a shape in the form of alternating cells, said main air ducts and said flexible blower grille blocks communicate at the intersection points in the projection through the air intakes; bending mechanisms located at the two ends of parallel installed main air ducts bend the glass being processed, while the said flexible blower grilles bend together with the bending mechanisms.

Further, the said flexible air grille unit is a corrugated pipe.

Further, the angle between the parallel installed main air ducts and the plurality of said parallel installed flexible blower grille units in vertical projection is 90°.

Further, a plurality of said main air ducts are located parallel to each other at intervals on a horizontal plane in a direction perpendicular to the glass supply direction, wherein a plurality of air supply holes are provided on said main air duct, said air supply holes and said air intakes are connected using connecting parts, and two ends of said flexible blowing grille unit are axially connected to main air ducts installed on the left and right sides of the hardening section, respectively.

Further, said flexible blowing grille unit is a cylindrical or prismatic blowing grille.

Further, both ends of the said flexible blowing grille block are made closed.

Further, the mentioned air intakes communicate with the air outlets on each main air duct, respectively.

Curved glass tempering equipment with air release mechanism also includes an air release mechanism.

Said air release mechanism is mounted in the flexible airflow grille unit and includes a flow smoothing structure located on an inner wall of said flexible airflow grille unit and/or a structure for directing and stabilizing the air discharge flow located on an outer wall of said flexible airflow grille unit; said smoothing flow structure is designed to reduce resistance to air flow in said flexible blower grille, and said structure for directing and stabilizing the outlet air flow is designed to limit the direction of flow of the air stream, while simultaneously equalizing the speed and flow rate of the air flow.

Further, said flexible blower grid unit is a corrugated pipe, said smoothing flow structure is a layer of rubber composite designed to fill the folded inner wall of said corrugated pipe to obtain a smooth inner wall.

Further, said air outlets are located on wavy folds with the largest outer diameter of said corrugated pipe.

Further, said structure for directing and stabilizing the outlet air flow is a separate air nozzle communicating with each of the said air outlets, and the said individual air nozzle is a tubular structure that is connected at one end to said air outlet and at the other end opens to processed glass.

Further, said structure for directing and stabilizing the air outlet flow is a fastening member mounted on an outer wall of the wavy folds of said corrugated pipe and covering said air outlet holes; said fastening element is provided with blowing holes corresponding to the locations of said air outlet holes, said blowing holes communicating with said air outlet holes.

Further, the number of said air outlet holes is two or more.

Equipment for tempering curved glass with a docking device also includes an auxiliary docking device for air intake.

The said auxiliary docking device is intended for docking the main air duct with the flexible blowing grille unit, the said auxiliary docking device includes an air inlet, an air outlet and a channel connecting the said air inlet to the said air outlet, a fixing extension is provided at the said air inlet, mating with the hole to supply air on the main air duct, a docking end is provided at the said air outlet for docking with the air intake of the flexible blowing grille unit.

Further, said connecting end has a sealing extension corresponding to the contour of the outer wall of said flexible blowing grid unit.

Further, the said flexible air grille unit is a corrugated pipe.

Further, said connecting end and said flexible blowing grid unit are connected by gluing or riveting.

Further, said connecting end has an annular clamp for locking said metal corrugated pipe.

Further, said auxiliary docking device is a flexible auxiliary docking device.

Further, said flexible auxiliary docking device is made of heat-resistant rubber.

The present invention provides for the replacement of each blower grille unit, consisting of individual blower boxes, with a continuous flexible blower grille unit, thereby forming a continuous blower grille perpendicular to the direction of movement of the glass, which eliminates the streaky temper marks that remain on the tempered glass during the movement of the glass and cooling by blowing grids according to the prior art, significantly improving the appearance and quality of tempered glass.

The use of the air release mechanism proposed by the present technical solution smoothes the flow channel with many wave-like folds on the inner wall of the flexible blowing grille unit, while reducing the flow resistance; In addition, the additionally provided separate air nozzle or fastening member does not deform, stably guides the air flow from the outlet of the flexible blowing grille, so that the direction, speed and flow of air are controlled to a certain extent in a directional, orderly and stable manner.

As for the flexible air grille with an unevenly curved outer surface, its butt joint can completely match the outer contour of the flexible air grille unit; When the flexible blower grille is bent by the bending mechanism, the curvature of the outer surface is changed, therefore, the butt joint can become unevenly curved without air leakage.

A continuous blower grille mechanism is used as the blower grid instead of the blaster grille consisting of individual blower boxes of the prior art, which avoids the stress problem due to the presence of gaps between the blower boxes during processing of bent tempered glass. This is a groundbreaking achievement that fundamentally changes the way the process is carried out in this field.

Description of drawings

Fig. 1 Diagram of separate type blowing boxes for tempering curved glass in the prior art;

fig. 2 Design diagram of Fig. 1 in a bent state during glass processing;

fig. 3 Assembly plan for a flexible air grille unit with main air ducts;

fig. 4 Design diagram of Fig. 3 in a bent state during glass processing;

fig. 5 Schematic sketch of the assembly of main air ducts with flexible blower grille blocks;

fig. 6 Longitudinal section along the axis of a flexible blowing grille block with a smoothing flow structure;

fig. 7 Top view of a flexible air grille unit with separate air nozzles;

fig. 8 Scheme of the radical section of Fig. 7;

fig. 9 Top view of the flexible blowing grille unit with fasteners;

fig. 10 Scheme of the radical section of Fig. 9;

fig. 11 View A in FIG. 5;

fig. 12 View B of FIG. 5;

fig. 13 Schematic of tempered spots on tempered glass under a polariscope in the prior art;

fig. 14 Schematic of hardening spots on tempered glass under a polariscope in the present invention;

fig. 15 Result of voltage tests in examples.

Symbol: main air duct 1, air intake 21, flexible air grille unit 2, air outlet 22, rubber composite layer 23, separate air nozzle 24, fastening element 25, blowing hole 251, air supply hole 11, auxiliary docking device 3, air inlet 4, air outlet 5, connecting end 51.

Embodiments of the Invention

The following is a clearer and more complete description of the technical solution of the present invention in combination with the accompanying drawings, it is obvious that the described examples are part of the embodiments of the invention, and not all. All other embodiments obtained by those skilled in the art based on the embodiments provided in the present invention, without resorting to creative work, are included within the scope of protection of the present invention.

It should be noted that in the description of the present invention, the terms “center”, “top”, “bottom”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer”, etc. should be construed to indicate by reference to the orientation or position as shown in the drawings. These terms are used only for convenience of description and to simplify the description of the present invention and do not state or imply that the device or element referred to must have a particular orientation or must be designed or operated in a particular orientation. Therefore, these terms should not be construed to limit the scope of the present invention.

In the description of the present invention it should also be noted that unless otherwise expressly stated or limited, the terms “install”, “connect”, “communicate” are to be understood in a broad sense, for example, it can be either a fixed connection or a removable connection or integral connection; there can be either a mechanical connection or an electrical connection; There can be either a direct connection, or an indirect connection through an intermediate element, or an internal communication between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the prior art, split type blow boxes are used in most cases, as shown in FIG. 2, in the gaps between the blowing boxes, traces of residual stress are formed on the surface of the glass being processed. In fig. 2 squares indicate the main air ducts 1, the air flow from these main air ducts blows through the blowing boxes, indicated by trapezoids in the drawing, the blowing boxes communicate with the main air ducts 1. The above structures are installed on the upper and lower surfaces of the bent glass being processed.

A method for weakening the hardening spots of tempered curved glass,

a continuous through cavity with reversible deformation is used as a blowing grid instead of the original separate type blowing boxes;

a smoothing flow structure is provided in the cavity to reduce flow resistance;

a structure is installed outside the cavity to direct and stabilize the exhaust air flow to limit the direction, speed and flow rate of the air stream;

A connecting device is installed between the cavity and the air source, which changes with changes in the curvature of the cavity.

Example 1

During the processing of tempered glass, the main air ducts 1 and the flexible blowing grille blocks 2 are located as shown in Fig. 5, bending mechanisms are installed at both ends of the main air ducts (for bending mechanisms, refer to the glass bending molding mechanism in CN201220306623.8). The flexible blowing grid unit 2 changes its curvature during bending of the bending mechanisms.

According to the present embodiment, equipment for tempering curved glass with the ability to weaken tempering spots is provided, referring to FIG. 3, intended for tempering bent glass on flexible rollers, including a flexible blowing grid consisting of one or multiple blocks of a flexible blowing grid 2, the flexible blowing grid block 2 is a through bendable tubular structure, while in the flexible blowing grid block 2 there is a plurality of air outlets 22 and air intakes 21 communicating with its internal space, and air outlets 22 exit onto the glass being processed; air intakes 21 communicate with air outlets on each main air duct 1, respectively.

During operation, the structures of the above flexible blowing grid units 2 are installed on the upper and lower surfaces of the bent glass being processed, and the glass being processed is blown through these structures, referring to FIG. 4, thus tempering the upper and lower surfaces of the glass.

This example shows a flexible blowing grid for tempering curved glass, which is a through-flow flexible tubular structure that is uniformly deformed along with the bending mechanism. Therefore, the solution using such a design avoids the appearance of tempering spots that occur in the gaps between blower boxes or their equivalents in the prior art, and has a significant effect of weakening residual stress marks for the tempering process of curved glass.

It should be noted that the flexible blowing grille block 2 has a tubular shape, both ends of the block may not be closed and used as air intakes 21, air enters the internal space of the block from both ends and exits through the air outlets 22, blowing the glass being processed.

It should also be noted that the axial ends of the flexible air grille unit 2 may be closed to ensure that the air flow in the flexible air grille unit 2 can only exit through the air outlet openings. The flexible blowing grille unit 2 can be directly manufactured in one piece with a through internal space and closed ends; or the main structure of the flexible blowing grille unit 2 and the ends can be made separately and assembled together, that is, first making the main structure of the flexible blowing grille unit 2 with open ends, then closing the axial ends with plugs, bolts, caps, etc.

It should be noted that in the prior art, the main air duct and the profile supporting the flexible air grille are made in a combined structure, and these two components can also be functionally separated, that is, the flexible air grille is supported separately to meet the requirements of the bending mechanism, in while air is supplied from the two ends of the flexible blower grille.

Link each tubular flexible blower grille with the bending mechanism synchronously, adjust the bending curve of each flexible blower grille accordingly according to different product requirements.

Example 2

This example is further limited based on Example 1, a plurality of flexible blowing grid units 2 are installed in parallel between the flexible rollers of the roller table, main air ducts 1 are located on the side of the flexible blowing grille block 2 remote from the glass being processed, a projection of parallel installed main air ducts 1 and a plurality of parallel installed blocks The flexible blowing grille 2 in the vertical direction forms a shape in the form of alternating cells, the main air ducts 1 and the blocks of the flexible blowing grille 2 communicate at the intersection points in the projection through the air intakes 21, referring to FIG. 5; bending mechanisms located at the two ends of parallel installed main air ducts 1 bend the glass being processed, while the blocks of the flexible blowing grille 2 bend together with the bending mechanisms. The axial ends of the flexible blowing grille unit 2 are made closed to ensure that the air flow in the flexible blowing grille unit 2 can only exit through the air outlet openings. The flexible blowing grille unit 2 can be directly manufactured in one piece with a through internal space and closed ends; or the main structure of the flexible blowing grille unit 2 and the ends can be made separately and assembled together, that is, first making the main structure of the flexible blowing grille unit 2 with open ends, then closing the axial ends with plugs, bolts, caps, etc.

The flexible blowing grid unit 2 is a metal corrugated pipe. The angle between the parallel installed main air ducts 1 and the plurality of parallel installed blocks of the flexible blower grille 2 in the vertical projection is 90°.

It should be noted that the bending mechanisms are not always completely parallel to each other in operation, since they are connected to the main ducts in operation.

Example 3

According to the present embodiment, a curved glass tempering equipment with an air release mechanism is provided based on Example 1, which also includes an air release mechanism that is installed in the flexible blower unit 2 and includes a smoothing flow pattern located on the inner wall of the flexible blower unit. grilles 2, and/or a structure for directing and stabilizing the exhaust air flow, located on the outer wall of the flexible blowing grille unit 2; The flow smoothing structure is designed to reduce the resistance to air flow in the flexible blower grille, and the air outlet flow direction and stabilization structure is designed to limit the direction of air flow while simultaneously equalizing the speed and flow rate of the air flow.

The smoothing flow structure and the structure for directing and stabilizing the exhaust air flow can be installed either optionally or together.

Example 4

This example is further limited based on Example 3, the flexible air grille unit 2 is a corrugated pipe, the corrugated pipe is provided with air outlet holes 22 facing the side of the glass being processed, and air supply holes communicating with the main air ducts 1 Referring to FIG. 6, the flow smoothing structure is a rubber composite layer 23 mounted on the inner wall to fill the folded inner wall of the corrugated pipe to produce a smooth inner wall.

After the inner wall of the corrugated pipe with wavy folds becomes smooth, the flow resistance inside the pipe is reduced, and the wall thickness at the air outlet holes 22 is increased, therefore, the fluctuation in the direction of the air stream is reduced.

Example 5

This example is further limited based on Example 3, the flexible air grille unit 2 is a corrugated pipe, the corrugated pipe is provided with air outlet holes 22 facing the side of the glass being processed, and air supply holes communicating with the main air ducts 1. Referring to FIG. 7 , the air outlets 22 are located on wavy folds with the largest outer diameter of the corrugated pipe. The structure for directing and stabilizing the exhaust air flow is a separate air nozzle 24 communicating with each air outlet 22, and the individual air nozzle 24 is a tubular structure that connects with the air outlet 22 at one end and extends to the glass being processed at the other end. . Referring to FIG. 8, on each wavy fold there are 2–4 air outlet holes 22, facing the side of the glass being processed.

The separate air nozzle 24 is made of a material less prone to deformation. When the flexible blowing grille unit 2 is deformed by the bending mechanism, the inner diameter of the individual air nozzle 24 is not subject to deformation, so the air flow will become more stable and directed when injected.

Example 6

This example is further limited based on example 3, and is a parallel example to example 5, the flexible air grille unit 2 is a corrugated pipe, the corrugated pipe has air outlets 22 facing the side of the glass being processed, and air supply holes communicating with the main air ducts 1. Air outlets 22 are located on wavy folds with the largest outer diameter of the corrugated pipe. Referring to FIG. 10, the number of air outlet holes 22 is two or more, the structure for guiding and stabilizing the air outlet flow is a fastening member 25 installed on the outer wall of the wavy folds of the corrugated pipe and covering the air outlet holes, referring to FIG. 9, the fastening member 25 is provided with blow-off holes 251 corresponding to the locations of the air outlet holes 22, wherein the blow-off holes 251 communicate with the air outlet holes 22.

The fastening element 25 is made of a material less prone to deformation. When the flexible blowing grille block 2 is deformed by the bending mechanism, the diameter of the blowing hole 251 on the fastening member 25 is not subject to deformation; The fastener 25 is provided with a plurality of blow holes 251, so when air is injected, all the blow holes 251 on one fastener 25 are relatively fixed, and the air flow will become more stable and directed.

The air outlets are made using rivets. Air outlet diameter: 2–10 mm.

Example 7

The present invention provides equipment for tempering curved glass with a docking device, including an auxiliary docking device for air intake. The auxiliary docking device 3 is designed for connecting the main air duct 1 with the flexible blowing grille unit 2, the auxiliary docking device 3 includes an air inlet 4, an air outlet 5 and a channel connecting the air inlet to the air outlet, a locking extension is provided at the air inlet 4, docking with an air supply hole 11 on the main air duct 1, a docking end 51 is provided at the air outlet 5 for docking with the air intake 21 of the flexible blowing grille unit 2, the auxiliary docking device 3 is a flexible auxiliary docking device. The main air ducts 1 and the flexible air grille units 2 are located perpendicular to each other, referring to FIG. 1, the auxiliary docking device 3 is a connection between them, referring to FIG. 11 and fig. 12.

As for the flexible blowing grille unit 2 with an unevenly curved outer surface, its butt joint may completely coincide with the outer contour of the flexible blowing grille unit 2; When the flexible blower grille unit 2 is bent by the bending mechanism, the curvature of the outer surface is changed, therefore, the butt joint can become unevenly bent without air leakage. For bending mechanisms, reference is made here to the glass bending mechanism in CN201220306623.8.

Referring to FIG. 11, in the process of processing bent glass, the air flow, leaving the main air duct 1 through the air supply hole 11, passes through the auxiliary docking device 3, enters the flexible blowing grid unit 2 through the air intake 21, then blows the tempered curved glass through the flexible blowing unit grates 2.

Example 8

This example is further limited based on Example 7. The optimal material for the auxiliary docking device 3 is heat-resistant rubber. By using highly elastic polymer materials such as heat-resistant rubber, the shape of the flexible blowing grille unit 2 can be well adjusted when changing the shape of its outer wall.

Referring to FIG. 12, the connecting end 51 has a sealing extension corresponding to the contour of the outer wall of the flexible blowing grille unit 2, which allows for a better sealing connection with the flexible blowing grille unit 2. The flexible blowing grille unit 2 is a metal corrugated pipe, the connecting end 51 is connected to the flexible blowing grille unit. blower grille 2 by gluing. The connecting end 51 has an annular clamp for locking the metal corrugated pipe. The above bonding method is only an example of a connection, and any connection method that can occur to a person skilled in the art can be used to form an alternative solution.

The main air duct 1 and the auxiliary connecting device 3 can be fixedly connected by riveting, gluing, threading and other methods that will not be described here.

The flexible blowing grid unit 2 is a metal corrugated pipe. The outer surface of the flexible blowing grill can withstand temperatures of at least 150 ^o C.

Example 9

This example provides a comparative example, FIG. Figure 13 shows hardening spots under a polariscope formed on tempered curved glass using old split-type blowing boxes, and FIG. 14 shows tempered spots under a polariscope formed on tempered curved glass using the blowing grids specified in the present invention. Hardening spots in the prior art are clearly visible in places corresponding to the gaps between the blower boxes.

In fig. 15 shows a table with compressive stress data for four points located in the hardening spots on the two curved glasses in FIG. 13 and 14 respectively. Surface compressive stress in hardening spots is reduced; During the experiment, the compressive stress on the glass surface is in the range of 98–103 MPa, but the compressive stress in the hardening spots is 5–10 MPa lower than in other places. Data from this experiment: When the surface compressive stress in other places is 100 MPa, the smallest surface compressive stress in the band quench spots generated during processing using the old technology is 89.4 MPa; However, the use of this technology avoids the appearance of streaky hardening spots, there are only sporadic scattered hardening spots on the glass, and the difference in compressive stress in the hardening spots is extremely small, in the range of 2 MPa and extremely close to 1 MPa, which significantly increases the strength of the glass, making a qualitative leap.

Example 10

A plurality of main air ducts 1 are located parallel to each other on a horizontal plane in a direction perpendicular to the direction of glass supply, while on the main air duct 1 there are many holes for air supply 11, air supply holes 11 and air intakes 21 are connected using connecting parts, and The two ends of the flexible blowing grille unit 2 are connected in the axial direction to the main air ducts 1 installed on the left and right sides of the hardening section, respectively. The left and right sides mentioned here are relative to the direction of glass movement, that is, the direction of glass movement is “forward”, the opposite direction to the direction of glass movement is “backwards”, the left side of the direction of glass movement is “left”, the right side of the direction of glass movement is ““ right." The flexible blowing grid unit is a cylindrical or prismatic blowing grid.

It should be noted that the above embodiments are used only to describe the technical solution of the present invention and not to limit it; Although the present invention has been described in detail in previous embodiments, those skilled in the art will understand that they may still make changes to the technical solutions described in the previous embodiments, or equivalently replace all or some of the technical characteristics; these changes or substitutions do not deviate from the spirit and scope of each of the embodiments of the present invention.

Claims (20)

1. Equipment for tempering bent glass with the ability to weaken tempering spots, designed for tempering bent glass on flexible rollers, said equipment includes a flexible blowing grid consisting of one or more flexible blowing grid units, said flexible blowing grille unit is a through bent tubular structure, wherein said flexible blowing grille unit has a plurality of air outlets and air intakes communicating with its internal space, and said air outlets open onto the glass being processed, characterized in that the axial ends of said flexible blower grille block are closed. 2. Equipment for tempering curved glass with the ability to weaken hardening spots according to claim 1, characterized in that a plurality of the mentioned blocks of a flexible blowing grid are installed in parallel between the flexible rollers of the roller conveyor, the main air ducts are located on the side of the flexible blowing grid, remote from the glass being processed, the projections are parallel the installed said main air ducts and the plurality of said parallel installed flexible blowing grille blocks in the vertical direction form a shape in the form of alternating cells, the mentioned main air ducts and the mentioned flexible blowing grille blocks communicate at the intersection points in the projection through the mentioned air intakes; bending mechanisms located at the two ends of parallel installed main air ducts are designed to bend the glass being processed, while said flexible blowing grilles are designed to bend together with the bending mechanisms. 3. Equipment for tempering curved glass with the ability to weaken hardening spots according to claim 2, characterized in that the said flexible blowing grid unit is a corrugated pipe. 4. Equipment for tempering curved glass with the ability to weaken hardening spots according to claim 1, characterized in that the angle between the parallel installed main air ducts and the plurality of parallel installed blocks of the flexible blowing grille in the vertical projection is 90°. 5. Equipment for tempering curved glass with the ability to weaken hardening spots according to claim 1, characterized in that a plurality of said main air ducts are located parallel to each other at intervals on a horizontal plane in the direction perpendicular to the direction of glass supply, while a plurality of said main air ducts are made air supply openings, said air supply openings and said air intakes are connected by means of connecting parts, and two ends of said flexible blowing grille unit are axially connected to main air ducts installed on the left and right sides of the quenching section, respectively. 6. Equipment for tempering curved glass with the ability to weaken hardening spots according to any one of paragraphs. 1-5, characterized in that said flexible blowing grid unit is a cylindrical or prismatic blowing grid. 7. Equipment for tempering curved glass with an air release mechanism, characterized in that it includes equipment for tempering glass according to any one of paragraphs. 1-6, as well as an air release mechanism, said air release mechanism includes a flow smoothing structure located on an inner wall of said flexible air grille unit, and/or a structure for directing and stabilizing the air outlet flow located on an outer wall of said flexible air grille unit. blower grille; said flow smoothing structure is configured to reduce resistance to air flow in said flexible blowing grille unit, and said structure for directing and stabilizing the outlet air flow is configured to limit the direction of air flow and, at the same time, equalize the speed and flow rate of the air flow. 8. The curved glass tempering equipment with an air release mechanism according to claim 7, characterized in that said smoothing flow structure is a layer of rubber composite designed to fill the folded inner wall of said corrugated pipe to obtain a smooth inner wall. 9. Equipment for tempering curved glass with an air release mechanism according to claim 8, characterized in that said air outlets are located on wavy folds with the largest outer diameter of the corrugated pipe. 10. Equipment for tempering curved glass with an air release mechanism according to claim 9, characterized in that said structure for directing and stabilizing the exhaust air flow is a separate air nozzle communicating with each mentioned air outlet, and said separate air nozzle is a tubular a structure that connects at one end to the said air outlet and at the other end exits onto the glass being processed. 11 Equipment for tempering curved glass with an air release mechanism according to claim 9, characterized in that said structure for directing and stabilizing the exhaust air flow is a fastening member mounted on the outer wall of the wavy folds of said corrugated pipe and covering said air outlet holes; said fastening element is provided with blowing holes corresponding to the locations of said air outlet holes, said blowing holes communicating with said air outlet holes. 12. Equipment for tempering curved glass with an air release mechanism according to claim 10 or 11, characterized in that the number of said air outlet holes is two or more. 13. Equipment for tempering curved glass with a docking device, characterized in that it includes equipment for tempering glass according to any one of claims. 1-6 and/or hardening equipment with an air outlet mechanism according to any one of paragraphs. 7-12, as well as an auxiliary connecting device for air intake, the mentioned auxiliary connecting device for air intake is designed for connecting the main air duct to the blower grille unit, the mentioned auxiliary connecting device for air intake includes an air inlet, an air outlet and a channel connecting the mentioned an air inlet with said air outlet, at said air inlet there is a fixing extension configured to dock with the air supply hole on the main air duct, at said air outlet there is a connecting end for connecting to the air intake of the flexible blowing grille unit. 14. Equipment for tempering curved glass with a docking device according to claim 13, characterized in that said docking end has a sealing outer edge corresponding to the contour of the outer wall of said flexible blowing grid unit. 15. Equipment for tempering curved glass with a connecting device according to claim 13, characterized in that said flexible blowing grid unit is a corrugated pipe. 16. The curved glass tempering equipment with a connecting device according to claim 15, characterized in that said connecting end and said flexible blowing grid unit are connected by gluing or riveting. 17. Equipment for tempering curved glass with a docking device according to claim 14, characterized in that said docking end has an annular clamp for locking said corrugated pipe. 18. Equipment for tempering curved glass with a docking device according to claim 13, characterized in that said auxiliary docking device is a flexible auxiliary docking device. 19. Equipment for tempering curved glass with a docking device according to claim 18, characterized in that said flexible auxiliary docking device is made of heat-resistant rubber. 20. Equipment for tempering curved glass with the ability to weaken hardening spots according to claim 1, characterized in that said air intakes communicate with air outlets on each main air duct, respectively.

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