A tempering furnace for reducing tempering stress spots and its modification method

Abstract

The present invention relates to the field of glass processing technology, and discloses a tempering furnace for reducing tempering stress spots, comprising a furnace, a convection bellows, a ceramic roller, a radiation plate, and an electric heating wire. The furnace is wrapped with a heat-insulating material, is hollow inside, and is sealed on all sides, with glass plate entrances and exits left at the front and back; the ceramic roller is located in the middle of the furnace, and is arranged horizontally and perpendicularly to the direction of glass plate entry and exit; the convection bellows is located at the top of the furnace, the electric heating wire is located at the bottom of the furnace, and the radiation plate is located between the ceramic roller and the electric heating wire. Through holes are evenly distributed on the radiation plate, and the ceramic roller can be evenly radiated after being heated. The tempering furnace for reducing tempering stress spots heats the radiation plate through the electric heating wire at the bottom of the furnace, and then the ceramic roller is heated by heat radiation from the radiation plate, and then the lower surface of the glass plate is heated by conduction heating by the ceramic roller; at the same time, the hot air flow is circulated through the convection bellows to perform convection heating on the upper surface of the glass plate.

Description

Technical Field

[0001] The present invention relates to the technical field of glass processing, and in particular to a tempering furnace for alleviating tempering stress spots and a modification method thereof. Background Art

[0002] Tempered glass is widely used in the construction industry due to its excellent safety. However, during the tempering process, glass is prone to forming stress spots during the heating process from low temperature to high temperature and the strengthening process from high temperature to low temperature. At certain angles, alternating light and dark stripes can be observed on the glass surface, seriously affecting its appearance.

[0003] The main factors affecting tempered glass stress spots are the heating uniformity and strengthening uniformity of the glass. Currently, the means of controlling stress spots mainly focus on strengthening uniformity. Therefore, we propose a tempering furnace modification method to reduce tempered glass stress spots. Summary of the Invention

[0004] The present invention mainly solves the technical problems existing in the above-mentioned prior art and provides a tempering furnace and a modification method thereof for reducing tempering stress spots.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a tempering furnace for reducing tempered stress spots, comprising a base box, an equipment box fixedly installed on the top of the base box, the interior of the equipment box is hollow, the interior of the equipment box passes through the top wall of the equipment box and is connected to the top area of the equipment box, a control device box is provided at the front end of the equipment box, an auxiliary box cover is provided on the top of the equipment box, lock holes are provided at the front and rear ends on the left and right sides of the top wall of the equipment box, fixing screws are provided on the top wall of the auxiliary box cover at positions corresponding to the lock holes on the equipment box, the equipment box and the auxiliary box cover are fixedly connected to each other by the lock holes and the fixing screws, through holes are provided on the left and right side walls of the equipment box, the through holes pass through the corresponding position walls of the equipment box and are connected to the interior of the equipment box, limiting plates are provided on the left and right ends of the equipment box, the limiting plates are provided at the front and rear positions of the corresponding through holes, and the limiting plates are fixedly installed on the corresponding position walls of the equipment box, ceramic rollers are provided at intervals on the side close to each other, and the ceramic rollers are also provided in the corresponding position area inside the equipment box.

[0006] Preferably, the inner top and bottom of the equipment box are provided with isolation plates, and two groups of isolation plates are provided with heating wires at one end away from each other. Auxiliary plates are provided at intervals and tilted on the inner top of the equipment box, and the exhaust area and the intake area are formed by the tilted auxiliary plates. A controllable pressure device is provided at the top of the auxiliary box cover corresponding to the intake area, and a transmission head is provided at the bottom of the controllable pressure device. A guide groove for facilitating pressure conduction is provided on the bottom wall of the auxiliary box cover, and auxiliary grooves are provided on the inner side of the guide groove corresponding to the exhaust area formed by the two adjacent groups of auxiliary plates.

[0007] Preferably, a driving fan is provided inside the base box, and an output end of the driving fan passes through the wall at a corresponding position on the top of the base box and is connected to the interior of the equipment box.

[0008] Preferably, the top group of isolation plates includes ventilation plates and suction plates, and the ventilation plates and suction plates are arranged alternately, and the positions of the ventilation plates and the exhaust areas correspond to each other, and the positions of the suction plates and the suction areas correspond to each other. Blowing ports are spaced apart on the top wall of the ventilation plates, and the blowing ports pass through the corresponding positions of the wall of the ventilation plates. Suction ports are spaced apart on the suction plates, and the suction ports pass through the corresponding positions of the wall of the suction plates. Partition plates are fixedly installed on the bottom wall of the suction plates at intervals.

[0009] Preferably, the bottom group of isolation plates includes a ventilation plate, the side walls of the ventilation plate are fixedly mounted on the inner wall of the equipment box at a corresponding position, and air blowing ports are spaced apart on the side walls of the ventilation plate. A glass plate is provided on the top of the ceramic roller, and the inner front and rear side walls of the equipment box are fixedly mounted with limit cleaning blocks, which are trapezoidal blocks. The limit cleaning blocks gradually widen from top to bottom, and are located below the top group of isolation plates.

[0010] Preferably, the ceramic roller includes a fixed shaft, a movable sleeve, an outer roller sleeve and a fixed plate. The movable sleeve is in the shape of a circular block and is fixedly mounted on the outer side wall of the fixed shaft. The outer roller sleeve is in the shape of a circular block and is arranged at the outer position of the movable sleeve. A fixed plate is fixedly mounted at an annular interval on the inner side wall of the outer roller sleeve, and the fixed plate is fixedly mounted on the outer side corresponding position of the movable sleeve away from one end of the outer roller sleeve.

[0011] Preferably, a rubber plate is inlaid with an annular space on the side wall of the outer roller sleeve, and the rubber plate is an arc-shaped plate that can be elastically deformed. An auxiliary spring is fixedly installed on the inner side wall of the rubber plate, and the auxiliary spring is fixedly installed on the corresponding outer wall of the movable sleeve at one end away from the rubber plate. Auxiliary holes are provided at intervals on the side wall of the rubber plate, and the auxiliary holes pass through the corresponding wall of the rubber plate. A ventilation groove is provided on the side wall of the fixed plate, and the ventilation groove passes through the corresponding wall of the fixed plate.

[0012] Preferably, the interior of the limit cleaning block is hollow, and a fan is provided on the inside of the limit cleaning block. Fixed blocks are fixedly installed on the side walls of the two groups of limit cleaning blocks close to each other on one side, and exhaust ports are provided on the side walls of the two groups of limit cleaning blocks close to each other on one side. The exhaust ports pass through the corresponding wall surfaces of the limit cleaning blocks and are connected to the interior of the limit cleaning blocks, and the exhaust ports are located below the fixed blocks. The front and rear corresponding groups of fixed blocks are fixedly installed with auxiliary shafts close to one end of each other, and a limiting roller is movably sleeved on the outer side of the auxiliary shaft. A limiting groove is provided on the inner side of the limiting roller, and the limiting groove is a circular arc-shaped slot. Limiting balls are fixedly installed on the outer side wall of the auxiliary shaft at annular intervals, and the limiting balls are movably buckled in the inside of the limiting groove, and clamping plates are fixedly installed on the inner side wall of the limiting groove at annular intervals.

[0013] Preferably, elastically deformable bonding plates are fixedly installed on both ends of the bottom wall of the limiting roller, and inner limiting plates are provided on the side walls of the two groups of bonding plates close to each other. The inner limiting plates are arc-shaped elastic plates, and the two groups of inner limiting plates protrude toward the side close to each other. A cleaning block is fixedly installed on the bottom wall of the bonding plate, and a cleaning cone is fixedly installed on the bottom of the cleaning block. The two groups of bonding plates are close to each other at one end and fixedly installed with limiting shafts at intervals, and the side wall of the limiting shaft is provided with a deforming sleeve, and a deformation spring that can be elastically deformed is provided inside the deforming sleeve.

[0014] A method for modifying a tempering furnace to reduce stress spots on tempered glass:

[0015] S1: The fan inside the base box is used to transmit airflow, so that the airflow in the bottom area inside the equipment box is affected by the heating wire and heated, and the bottom of the glass plate is heated by the hot air flow;

[0016] S2: The airflow is transmitted to the corresponding position area through the exhaust area on the top isolation plate. The pressure is controlled by the controllable pressure device and the transmission head, so that the airflow is affected by positive and negative pressure and transmitted to the position above the glass plate through the suction area, thereby heating the top area of the glass plate.

[0017] Beneficial effects

[0018] The present invention provides a tempering furnace and a modification method thereof for alleviating tempering stress spots, which have the following beneficial effects:

[0019] (1) A tempering furnace for reducing tempering stress spots transmits airflow through a fan inside a base box, so that the airflow in the bottom area inside the equipment box is affected by the electric heating wire and is heated and transmitted, and the bottom of the glass plate is heated by the hot air flow. At the same time, the airflow is transmitted to the inside of the corresponding position area through the exhaust area on the top isolation plate, and the pressure is controlled by a controllable pressure device and a transmission head, so that the airflow is affected by positive and negative pressure and is transmitted to the position above the glass plate through the suction area, thereby heating the top area of the glass plate, thereby effectively and evenly heating the glass plate.

[0020] (2) The tempering furnace for reducing tempering stress spots has a rubber plate on the ceramic roller that can be adjusted by an auxiliary spring, so that when the glass plate moves on the ceramic roller, the surface of the glass plate can be effectively assisted in cleaning. At the same time, it can assist the hot air flow to impact the glass plate, thereby improving the heating treatment effect of the glass plate.

[0021] (3) The tempering furnace for reducing tempering stress spots forms convection impact through fans inside two sets of limiting cleaning blocks arranged at the front and rear, thereby being able to effectively clean the surface of the glass plate.

[0022] (4) The tempering furnace for reducing tempering stress spots impacts the area between two groups of bonding plates in the corresponding area through the exhaust port, so that the two groups of bonding plates are brought closer to each other through air flow pressure, so that the bottom cleaning blocks and cleaning cones of the bonding plates can effectively and dynamically clean the surface of the glass plate.

[0023] (5) The tempering furnace for reducing tempering stress spots has two sets of inner limit plates that are protruding close to each other, so that the two sets of bonding plates can be effectively adjusted in multiple angles, thereby improving the cleaning effect of the cleaning block and the cleaning cone.

[0024] (6) A tempering furnace for reducing tempering stress spots heats the radiation plate through the electric heating wire at the bottom of the furnace, and then the radiation plate heats the ceramic roller through heat radiation, and then the ceramic roller conducts heat to the lower surface of the glass plate; at the same time, the hot air flow is circulated through the convection bellows to perform convection heating on the upper surface of the glass plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0026] The structures, proportions, sizes, etc. illustrated in this specification are intended only to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall still fall within the scope of the technical contents disclosed herein.

[0027] Figure 1 This is a schematic diagram of the overall tempering furnace for reducing stress spots in tempered glass according to the present invention;

[0028] Figure 2 It is a partial structural diagram of the equipment box of the present invention;

[0029] Figure 3 Schematic diagram of the partial structure of the ceramic roller of the present invention;

[0030] Figure 4 A schematic diagram of the partial structure of the isolation plate of the present invention;

[0031] Figure 5 It is a partial structural diagram of the position limiting cleaning block of the present invention;

[0032] Figure 6 For the present invention Figure 5 Schematic diagram of the local enlarged structure at A in the middle;

[0033] Figure 7 It is a schematic diagram of the partial structure of the laminated board of the present invention.

[0034] Legend:

[0035] 1. Base box; 2. Equipment box; 3. Control device box; 4. Auxiliary box cover; 5. Lock hole; 6. Fixing screw; 7. Controllable pressure device; 8. Auxiliary plate; 9. Through hole; 10. Limiting plate; 11. Ceramic roller; 12. Transmission head; 13. Guide groove; 14. Auxiliary groove; 15. Isolation plate; 16. Heating wire; 17. Limiting cleaning block; 18. Glass plate; 19. Fixed shaft; 20. Movable sleeve; 21. Outer roller sleeve; 22. Fixed plate; 23. Ventilation groove; 24 , rubber plate; 25, auxiliary hole; 26, auxiliary spring; 27, ventilation plate; 28, suction plate; 29, blowing port; 30, suction port; 31, partition plate; 32, fan; 33, limiting roller; 34, exhaust port; 35, fixing block; 36, auxiliary shaft; 37, fitting plate; 38, cleaning block; 39, limiting groove; 40, clamping plate; 41, limiting ball; 42, inner limiting plate; 43, cleaning cone; 44, limiting shaft; 45, deformation sleeve; 46, deformation spring. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Example: A tempering furnace for reducing tempering stress spots, such as Figure 1-Figure 7 As shown, it includes a base box 1, a device box 2 is fixedly installed on the top of the base box 1, the interior of the device box 2 is hollow, the interior of the device box 2 passes through the top wall of the device box 2 and is connected to the top area of the device box 2, a control device box 3 is provided at the front end of the device box 2, an auxiliary box cover 4 is provided on the top of the device box 2, the auxiliary box cover 4 is a rectangular plate, and lock holes 5 are provided at the front and back ends of the left and right sides of the top wall of the device box 2, and fixing screws 6 are provided on the top wall of the auxiliary box cover 4 corresponding to the lock holes 5 on the device box 2. The device is fixed by the lock holes 5 and the fixing screws 6. The box 2 and the auxiliary box cover 4 are fixedly connected to each other. A through hole 9 is provided on the left and right side walls of the equipment box 2. The through hole 9 passes through the corresponding wall surface of the equipment box 2 and is connected to the interior of the equipment box 2. A limiting plate 10 is provided on both ends of the equipment box 2. The limiting plate 10 is a rectangular plate. The limiting plate 10 is arranged at the front and rear positions of the corresponding through hole 9. The limiting plate 10 is fixedly installed on the corresponding wall surface of the equipment box 2. Ceramic rollers 11 are arranged at intervals on one side of the two sets of limiting plates 10 close to each other, and the ceramic rollers 11 are also arranged in the corresponding position area inside the equipment box 2;

[0038] Isolation plates 15 are provided at the inner top and bottom of the equipment box 2. A heating wire 16 is provided at one end of each set of isolation plates 15, which are away from each other. Auxiliary plates 8 are provided at an angled interval on the inner top of the equipment box 2. The inclined auxiliary plates 8 form an exhaust area and an intake area. A controllable pressure device 7 is provided at the top of the auxiliary box cover 4 corresponding to the intake area. A transmission head 12 is provided at the bottom of the controllable pressure device 7. A guide groove 13 is provided on the bottom wall of the auxiliary box cover 4 to facilitate pressure conduction. Auxiliary grooves 14 are provided on the inner side of the guide grooves 13, corresponding to the exhaust area formed by the two adjacent sets of auxiliary plates 8.

[0039] A drive fan is installed inside the base box 1. The output of the drive fan penetrates the corresponding wall at the top of the base box 1 and connects to the interior of the equipment box 2. The radiation plate is evenly distributed with through holes. After being heated, it can evenly radiate heat to the ceramic roller, so that the lower surface of the glass sheet is evenly heated. Because the lower surface of the glass is in direct contact with the ceramic roller during the transmission process, the lower surface is heated more evenly and faster. The upper surface usually relies on radiation or convection heat transfer, which is more difficult to heat evenly than the lower surface.

[0040] The top group of isolation plates 15 includes a ventilation plate 27 and an air suction plate 28. The ventilation plate 27 and the air suction plate 28 are arranged in an interlaced manner. The position of the ventilation plate 27 corresponds to the exhaust area, and the position of the air suction plate 28 corresponds to the air suction area. The top wall of the ventilation plate 27 is provided with a blowing port 29 at intervals. The blowing port 29 passes through the corresponding position wall of the ventilation plate 27. The air suction port 30 is provided at intervals on the air suction plate 28. The air suction port 30 passes through the corresponding position wall of the air suction plate 28. The bottom wall of the air suction plate 28 is fixedly installed with a partition plate at intervals. 31. The convection bellows is composed of a fan, air duct, air perforated plate, electric heating strip, and partition. The air perforated plate is composed of a double-layer air suction perforated plate and a single-layer air blowing perforated plate. The number of air suction holes in the upper layer of the double-layer air suction perforated plate is 1 / 4 to 1 / 2 of the number of air suction holes in the lower layer, and the upper and lower layers are separated by 10 to 15 cm. The air suction perforated plate and the air blowing perforated plate in the middle of the bellows are the same width, 30 to 40 cm. The air suction perforated plate at both ends is half the width of the air blowing perforated plate. A partition with a height of 10 to 15 cm is fixed downwardly between the air suction perforated plate and the air blowing perforated plate.

[0041] The bottom set of isolation panels 15 includes a ventilation panel 27, the side walls of which are fixedly mounted on the inner wall of the equipment box 2 at corresponding positions, and air outlets 29 are spaced apart on the side walls of the ventilation panel 27;

[0042] A glass plate 18 is provided on the top of the ceramic roller 11. The inner side walls of the equipment box 2 are fixedly installed with limit cleaning blocks 17 on both sides. The limit cleaning blocks 17 are trapezoidal blocks. The limit cleaning blocks 17 gradually widen from top to bottom. The limit cleaning blocks 17 are located below a group of isolation plates 15 at the top. The airflow is guided by the partitions and the air intake holes provide a steady flow, which comprehensively stabilizes the hot air flow circulation and improves the uniformity of heating on the surface of the glass plate.

[0043] The ceramic roller 11 includes a fixed shaft 19, a movable sleeve 20, an outer roller sleeve 21 and a fixed plate 22. The movable sleeve 20 is an annular block and is fixedly mounted on the outer side wall of the fixed shaft 19. The outer roller sleeve 21 is an annular block and is arranged at an outer position of the movable sleeve 20. The inner side wall of the outer roller sleeve 21 is fixedly mounted with a fixed plate 22 at an annular interval. The fixed plate 22 is fixedly mounted on the outer side wall of the movable sleeve 20 at a corresponding position away from the end of the outer roller sleeve 21.

[0044] The side wall of the outer roller sleeve 21 is inlaid with a rubber plate 24 at an annular interval. The rubber plate 24 is an arc-shaped plate that can be elastically deformed. An auxiliary spring 26 is fixedly installed on the inner side wall of the rubber plate 24. The auxiliary spring 26 is fixedly installed on the corresponding position of the outer wall of the movable sleeve 20 away from the rubber plate 24. Auxiliary holes 25 are spaced apart on the side wall of the rubber plate 24. The auxiliary holes 25 pass through the corresponding position of the wall of the rubber plate 24. A ventilation groove 23 is opened on the side wall of the fixed plate 22. The ventilation groove 23 passes through the corresponding position of the wall of the fixed plate 22;

[0045] The interior of the limit cleaning block 17 is hollow, and a fan 32 is provided on the inner side of the limit cleaning block 17. The two groups of limit cleaning blocks 17 are fixedly installed with fixed blocks 35 on the side walls close to each other. The two groups of limit cleaning blocks 17 are provided with exhaust ports 34 on the side walls close to each other. The exhaust ports 34 pass through the corresponding wall surfaces of the limit cleaning blocks 17 and are connected to the interior of the limit cleaning blocks 17, and the exhaust ports 34 are located below the fixed blocks 35. The front and rear corresponding groups of fixed blocks 35 are fixedly installed with auxiliary shafts 36 near one end. The outer side of the auxiliary shaft 36 is movably sleeved with a limit roller 33, and the inner side of the limit roller 33 is provided with a limit groove 39. The limit groove 39 is a circular arc-shaped slot. The outer side wall of the auxiliary shaft 36 is fixedly installed with limit balls 41 at annular intervals, and the limit balls 41 are movably buckled in the interior of the limit groove 39. The inner side wall of the limit groove 39 is fixedly installed with card plates 40 at annular intervals.

[0046] Elastically deformable laminating plates 37 are fixedly mounted on both the front and rear ends of the bottom wall of the limiting roller 33. An inner limiting plate 42 is provided on the side wall of the two sets of laminating plates 37 on the side close to each other. The inner limiting plates 42 are arc-shaped elastic plates. The two sets of inner limiting plates 42 are convex toward the side close to each other. A cleaning block 38 is fixedly mounted on the bottom wall of the laminating plate 37, and a cleaning cone 43 is fixedly mounted on the bottom of the cleaning block 38.

[0047] The two sets of laminating plates 37 are fixedly installed with a limit shaft 44 at one end thereof. A side wall of the limit shaft 44 is provided with a deformable sleeve 45 , and an elastically deformable deformation spring 46 is provided inside the deformable sleeve 45 .

[0048] Working principle of the present invention:

[0049] During use, the airflow is transmitted by the fan inside the base box 1, so that the airflow in the bottom area inside the equipment box 2 is affected by the electric heating wire 16 and heated and transmitted, and the bottom of the glass plate 18 is heated by the hot air flow. At the same time, the airflow is transmitted to the corresponding position area through the exhaust area on the top isolation plate 15. The pressure is controlled by the controllable pressure device 7 and the transmission head 12, so that the airflow is affected by positive and negative pressure and transmitted to the position above the glass plate 18 through the suction area, thereby heating the top area of the glass plate 18, so that the glass plate 18 can be effectively and evenly heated.

[0050] The rubber plate 24 on the ceramic roller 11, which can be adjusted by the auxiliary spring 26, can effectively assist in cleaning the surface of the glass plate 18 when the glass plate 18 moves on the ceramic roller 11. At the same time, it can assist the hot air flow to impact the glass plate 18, thereby improving the heating treatment effect of the glass plate 18.

[0051] The fans 32 inside the two sets of limit cleaning blocks 17 provided at the front and rear create convection impact, thereby effectively cleaning the surface of the glass plate 18;

[0052] The exhaust port 34 impacts the area between the two sets of laminating plates 37 in the corresponding area, so that the two sets of laminating plates 37 are brought closer to each other by the airflow pressure, so that the bottom cleaning block 38 and the cleaning cone 43 of the laminating plates 37 can effectively and dynamically clean the surface of the glass plate 18;

[0053] By means of the two sets of inner limiting plates 42 protruding close to each other, the two sets of fitting plates 37 can be effectively adjusted in multiple angles, thereby improving the cleaning effect of the cleaning block 38 and the cleaning cone 43.

[0054] The radiant plate is evenly distributed with through-holes, which, when heated, radiate heat evenly to the ceramic roller, ensuring uniform heating of the lower surface of the glass sheet. Because the lower surface of the glass directly contacts the ceramic roller during transport, exchanging heat, the lower surface is heated more evenly and quickly. The upper surface, on the other hand, typically relies on radiation or convection, making it more difficult to heat evenly.

[0055] The convection bellows is composed of a fan, an air duct, an air hole plate, an electric heating strip, and a partition. The air hole plate is composed of a double-layer air suction hole plate and a single-layer air blowing hole plate. The number of air suction holes in the upper layer of the double-layer air suction hole plate is 1 / 4 to 1 / 2 of the number of air suction holes in the lower layer, and the upper and lower layers are separated by 10 to 15 cm. The air suction hole plate and the air blowing hole plate in the middle of the bellows are the same width, 30 to 40 cm. Both ends are air suction hole plates, and the width is half of the air blowing hole plate. A partition with a downward extension of 10 to 15 cm is fixed between the air suction hole plate and the air blowing hole plate. The air flow guides the partition and the air suction hole plate has a stabilizing effect on the flow, which comprehensively stabilizes the hot air flow circulation, improves the heating uniformity of the upper surface of the glass plate, and the combination of the upper and lower parts can effectively heat the entire glass plate more evenly, thereby improving the tempered stress spots.

[0056] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A tempering furnace for reducing tempering stress spots, comprising a base box (1), a device box (2) fixedly mounted on the top of the base box (1), the interior of the device box (2) being hollow, the interior of the device box (2) penetrating the top wall of the device box (2) and communicating with the top area of the device box (2), a control device box (3) being provided at the front end of the device box (2), an auxiliary box cover (4) being provided at the top of the device box (2), and lock holes (5) being provided at both the front and rear ends of the left and right sides of the top wall of the device box (2), characterized in that: A fixing screw (6) is provided on the top wall of the auxiliary box cover (4) at a position corresponding to the lock hole (5) on the equipment box (2), and the equipment box (2) and the auxiliary box cover (4) are fixedly connected to each other through the lock hole (5) and the fixing screw (6). A through hole (9) is provided on the left and right side walls of the equipment box (2), and the through hole (9) passes through the wall at the corresponding position of the equipment box (2) and is connected to the interior of the equipment box (2). A limiting plate (10) is provided on both the left and right ends of the equipment box (2), and the limiting plate (10) is provided at the front and rear positions of the corresponding through hole (9). The limiting plate (10) is fixedly installed on the wall at the corresponding position of the equipment box (2). On the surface, ceramic rollers (11) are arranged at intervals on one side of the two groups of limiting plates (10) close to each other, and the ceramic rollers (11) are also arranged in the corresponding position area on the inner side of the equipment box (2). Isolation plates (15) are arranged on the inner top and bottom of the equipment box (2). Limiting cleaning blocks (17) are fixedly installed on the front and rear side walls of the inner side of the equipment box (2). The limiting cleaning blocks (17) are located below the top group of isolation plates (15). The interior of the limiting cleaning blocks (17) is hollow. A fan (32) is arranged inside the limiting cleaning blocks (17). The two groups of limiting cleaning blocks (17) are close to each other. Fixed blocks (35) are fixedly installed on the side walls at intervals. The two groups of limit cleaning blocks (17) are close to each other on one side of the side wall and are provided with exhaust ports (34). The exhaust ports (34) penetrate the corresponding wall surface of the limit cleaning block (17) and are connected to the interior of the limit cleaning block (17). The exhaust ports (34) are located below the fixed blocks (35). The two groups of fixed blocks (35) corresponding to the front and rear are fixedly installed at one end close to each other. The outer side of the auxiliary shaft (36) is movably sleeved with a limit roller (33). The front and rear ends of the bottom wall of the limit roller (33) are fixedly installed with elastically deformable bonding plates. (37), the two groups of the bonding plates (37) are both provided with an inner limit plate (42) on the side wall close to each other, the inner limit plate (42) is an arc-shaped elastic plate, and the two groups of the inner limit plates (42) are convex toward the side close to each other, a cleaning block (38) is fixedly installed on the bottom wall of the bonding plate (37), and a cleaning cone (43) is fixedly installed on the bottom of the cleaning block (38), and a limit shaft (44) is fixedly installed at one end of the two groups of the bonding plates (37) close to each other, and a deformation sleeve (45) is provided on the side wall of the limit shaft (44), and a deformation spring (46) capable of elastic deformation is provided inside the deformation sleeve (45).

2. The tempering furnace for reducing stress spots in tempered glass according to claim 1, characterized in that: The two groups of isolation plates (15) are both provided with electric heating wires (16) at one end away from each other. Auxiliary plates (8) are provided at intervals and tilted on the inner top of the equipment box (2). The exhaust area and the intake area are formed by the tilted auxiliary plates (8). A controllable pressure device (7) is provided at the top of the auxiliary box cover (4) corresponding to the intake area. A transmission head (12) is provided at the bottom of the controllable pressure device (7). A guide groove (13) for facilitating pressure conduction is provided on the bottom wall of the auxiliary box cover (4). Auxiliary grooves (14) are provided on the inner side of the guide groove (13) corresponding to the exhaust area formed by the two adjacent groups of auxiliary plates (8).

3. The tempering furnace for reducing stress spots in tempered glass according to claim 1, characterized in that: A driving fan is provided inside the base box (1), and an output end of the driving fan passes through a wall at a corresponding position on the top of the base box (1) and is in communication with the interior of the equipment box (2).

4. The tempering furnace for reducing stress spots in tempered glass according to claim 2, characterized in that: The top group of isolation plates (15) includes a ventilation plate (27) and an air suction plate (28), and the ventilation plate (27) and the air suction plate (28) are arranged in an interlaced manner. The position of the ventilation plate (27) corresponds to the exhaust area, and the position of the air suction plate (28) corresponds to the air suction area. Blowing ports (29) are provided on the top wall of the ventilation plate (27) at intervals, and the blowing ports (29) pass through the corresponding position wall of the ventilation plate (27). Suction ports (30) are provided on the air suction plate (28) at intervals, and the suction ports (30) pass through the corresponding position wall of the air suction plate (28). Partition plates (31) are fixedly installed on the bottom wall of the air suction plate (28) at intervals.

5. The tempering furnace for reducing stress spots in tempered glass according to claim 2, characterized in that: The isolation plate (15) of the bottom group includes a ventilation plate (27), the side wall of the ventilation plate (27) is fixedly mounted on the inner wall of the equipment box (2) at a corresponding position, and the side wall of the ventilation plate (27) is provided with an air blowing port (29) at intervals. A glass plate (18) is provided on the top of the ceramic roller (11), and the limiting cleaning block (17) is a trapezoidal block, and the limiting cleaning block (17) gradually becomes wider from top to bottom.

6. The tempering furnace for reducing stress spots in tempered glass according to claim 5, characterized in that: The ceramic roller (11) comprises a fixed shaft (19), a movable sleeve (20), an outer roller sleeve (21) and a fixed plate (22), wherein the movable sleeve (20) is in the shape of a circular ring block and is fixedly mounted on the outer side wall of the fixed shaft (19), the outer roller sleeve (21) is in the shape of a circular ring block and is arranged at an outer position of the movable sleeve (20), and the fixed plate (22) is fixedly mounted at an annular interval on the inner side wall of the outer roller sleeve (21), and the fixed plate (22) is fixedly mounted on the outer side wall of the movable sleeve (20) at a corresponding position at one end away from the outer roller sleeve (21).

7. The tempering furnace for reducing stress spots in tempered glass according to claim 6, characterized in that: A rubber plate (24) is inlaid at annular intervals on the side wall of the outer roller sleeve (21). The rubber plate (24) is an arc-shaped plate that can be elastically deformed. An auxiliary spring (26) is fixedly installed on the inner side wall of the rubber plate (24). The auxiliary spring (26) is fixedly installed on the outer wall of the movable sleeve (20) at one end away from the rubber plate (24). Auxiliary holes (25) are spaced apart on the side wall of the rubber plate (24). The auxiliary holes (25) pass through the wall of the corresponding position of the rubber plate (24). A ventilation groove (23) is opened on the side wall of the fixed plate (22). The ventilation groove (23) passes through the wall of the corresponding position of the fixed plate (22).

8. The tempering furnace for reducing stress spots in tempered glass according to claim 5, characterized in that: A limiting groove (39) is provided on the inner side of the limiting roller (33), and the limiting groove (39) is a circular arc-shaped slot hole. A limiting ball (41) is fixedly installed at an annular interval on the outer side wall of the auxiliary shaft (36), and the limiting ball (41) is movably buckled inside the limiting groove (39). A clamping plate (40) is fixedly installed at an annular interval on the inner side wall of the limiting groove (39).

9. A method for modifying a tempering furnace for reducing tempering stress spots, comprising the tempering furnace for reducing tempering stress spots according to claim 3, characterized in that: The steps include: S1: The air flow is transmitted by the internal fan of the base box (1), so that the air flow in the bottom area inside the equipment box (2) is affected by the electric heating wire (16) and heated, and the bottom of the glass plate (18) is heated by the hot air flow; S2: The airflow is transmitted to the corresponding position area through the exhaust area on the top isolation plate (15), and the pressure is controlled by the controllable pressure device (7) and the transmission head (12), so that the airflow is affected by positive and negative pressure and transmitted to the position above the glass plate (18) through the suction area, thereby heating the top area of the glass plate (18).

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