Glass tempering cooling device and tempering cooling method

Abstract

The invention relates to a glass tempering cooling device and a tempering cooling method, the device comprises a quenching station, the quenching station is located at an outlet of a heating furnace, the quenching station is provided with a lower pressing mechanism and an upper pressing mechanism, the lower pressing mechanism is located below the upper pressing mechanism, and the lower pressing mechanism comprises a lower transmission roller; the upper pressing mechanism comprises an upper transmission pressing roller, an elastic adjusting assembly and a driving assembly, the upper transmission pressing roller and the lower transmission roller are oppositely arranged, and the elastic adjusting assembly is connected with the upper transmission pressing roller so that the upper transmission pressing roller can elastically abut against glass located on the lower transmission roller; the driving assembly is in transmission connection with the upper transmission pressing roller. According to the glass tempering cooling device and the glass tempering cooling method provided by the invention, the glass is obliquely placed, and meanwhile, the upper pressing mechanism is arranged in the quenching stage, so that the deformation of the edge part of the glass can be inhibited through the pressure action of the upper transmission pressing roller and the inclined transmission of the edge part when the glass is quenched, and the bending phenomenon of the edge part of the glass is solved.

Description

Technical Field

[0001] The invention belongs to the field of glass preparation, and in particular relates to a glass tempering cooling device and a tempering cooling method. Background Art

[0002] Physical tempering in glass deep processing is a process in which glass products are heated to a temperature close to the softening point and then quickly sent to a cooling device for uniform cooling to form a uniform stress layer inside and outside the glass. After quenching, the temperature of tempered glass drops below the strain point, and tempering stress is formed at this stage. Due to the low emissivity of the film surface of LOW-E glass, the cooling rate of the film layer is lower than the cooling rate of the non-film layer at the moment of rapid cooling. The inconsistent instantaneous cooling rate causes the glass to deform and bend at the edge of the glass.

[0003] Since the bottom of the tempering equipment is supported by rollers, but not on the top, Low-E glass is usually tempered with the film facing upwards to prevent it from being scratched by the driving ceramic rollers. Uneven cooling up and down during rapid cooling causes the edge of the glass to bend upwards, resulting in unevenness. When observing the reflection of the glass from a distance, the reflected image will be deformed. At the same time, this phenomenon will cause matching deviations between laminated glasses, making it easy for the film to gather gas and produce bubbles. Summary of the invention

[0004] The object of the present invention is to provide a glass tempering cooling device and a tempering cooling method.

[0005] In order to achieve the above object, a technical solution adopted by the present invention is:

[0006] A glass tempering cooling device comprises a quenching station, the quenching station is located at the outlet of a heating furnace, the quenching station is provided with a lower pressing mechanism and an upper pressing mechanism, the lower pressing mechanism is located below the upper pressing mechanism, and the lower pressing mechanism comprises a lower transmission roller;

[0007] The upper pressure mechanism includes an upper transmission pressure roller, an elastic adjustment component, and a driving component. The upper transmission pressure roller is arranged opposite to the lower transmission roller. The elastic adjustment component is connected to the upper transmission pressure roller so that the upper transmission pressure roller elastically resists the glass located on the lower transmission roller; the driving component is in transmission connection with the upper transmission pressure roller.

[0008] In some embodiments, the elastic adjustment component includes an adjusting rod, a telescopic cylinder, a screw, a nut, a base plate, an elastic member, and a connecting shaft. The telescopic cylinder includes a fixed cylinder and a sliding cylinder. The fixed cylinder is connected to the adjusting rod, and the fixed cylinder extends in a vertical direction. The upper end of the sliding cylinder is sleeved with the fixed cylinder. The upper end of the screw is provided with the nut, and the nut is arranged in the fixed cylinder and abuts against the inner wall of the fixed cylinder. The lower end of the screw is arranged in the sliding cylinder, and the lower end of the screw is connected to the base plate, and the base plate abuts against the lower end of the sliding cylinder; the elastic member is arranged outside the sliding cylinder, one end of the elastic member is connected to the lower end of the fixed cylinder, and the other end of the elastic member abuts against the base plate and is connected to the lower end of the sliding cylinder, and the base plate is rotatably connected to the connecting shaft; the connecting shaft is connected to the roller shaft of the upper transmission roller, and the connecting shaft extends in a vertical direction.

[0009] In some embodiments, the outer circumference of the nut matches the inner circumference of the fixing cylinder.

[0010] In some embodiments, the nut is a hexagonal nut.

[0011] In some embodiments, the driving assembly includes a driving component, a first transmission roller, a second transmission roller, and a transmission belt wound around the first transmission roller and the second transmission roller. The driving component is connected to the first transmission roller, and the upper transmission pressure roller is connected to the second transmission roller.

[0012] In some embodiments, the device further comprises a connecting member, one end of which is connected to the second transmission roller, and the other end of which is connected to the roller shaft of the upper transmission roller.

[0013] In some embodiments, the device further comprises a support member, and opposite ends of the support member are respectively connected to the adjustment rod and the connecting member.

[0014] Another technical solution adopted by the present invention is:

[0015] A tempering cooling method using the glass tempering cooling device comprises:

[0016] S1. The glass passes through the loading station and the heating station in sequence, wherein the glass is placed at an angle, and the heating temperature of the glass is 600-650°C;

[0017] S2, the heated glass is moved to the quenching station for quenching, wherein the upper transmission roller is always against the glass, the upper transmission roller rotates in the opposite direction to the lower transmission roller, and the glass is placed at an angle;

[0018] S3, cooling the glass to room temperature.

[0019] In some embodiments, in step S2, the tension F of the elastic member in the elasticity adjustment assembly is obtained by the following formula:

[0020] F = f ± 10% f;

[0021] f = 1000T / 6;

[0022] Where T is the glass thickness and the unit of f is N / ㎡.

[0023] In some embodiments, in step S2, the distance between the upper transmission roller and the lower transmission roller is L, which is obtained by the following formula:

[0024] M = T-2;

[0025] L = M ± 20% M;

[0026] Where T is the glass thickness.

[0027] In some embodiments, in step S2, in the glass conveying direction, the angle between the front edge of the glass and the extending direction of the lower driving roller is an acute angle.

[0028] In some embodiments, the angle is less than or equal to 45°.

[0029] In some embodiments, the gap between two adjacent lower transmission rollers is C, and the distance between two vertices of the front edge of the glass in the glass conveying direction is D, and D≥C.

[0030] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0031] The present invention provides a glass tempering cooling device and a tempering cooling method. The glass is placed at an angle and an upper pressing mechanism is arranged in the quenching stage. By adjusting the placement angle of the upper glass, the distance between the upper transmission roller and the lower transmission roller, and the tension of the elastic member in the elastic adjustment component, the deformation of the glass during the rapid cooling process can be suppressed, thereby achieving the effect of reducing the bending of the glass edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Attached Figure 1 It is a structural diagram of the glass tempering cooling device of the present invention.

[0033] Attached Figure 2 It is a structural diagram of the upper pressing mechanism of the glass tempering cooling device of the present invention;

[0034] Attached Figure 3 It is a structural diagram of the screw of the upper pressing mechanism of the glass tempering cooling device of the present invention in one state;

[0035] Attached Figure 4 It is a structural diagram of the screw of the upper pressing mechanism of the glass tempering cooling device of the present invention in another state;

[0036] Attached Figure 5 A top view of the elastic adjustment assembly of the glass tempering cooling device of the present invention;

[0037] Attached Figure 6 This is a structural schematic diagram of the glass being located at the loading station;

[0038] Attached Figure 7 This is a schematic diagram of the structure of glass located at the quenching station;

[0039] Attached Figure 8 Structural diagram for glass testing.

[0040] In the above attached figure:

[0041] 1-elastic adjustment component, 101-adjusting rod, 102-fixed cylinder, 103-sliding cylinder, 104-screw, 105-nut, 106-bottom plate, 107-elastic member, 108-connecting shaft, 109-rotating bearing, 110-first transmission roller, 111-second transmission roller, 112-transmission belt;

[0042] 2-upper transmission roller;

[0043] 3-lower transmission roller;

[0044] 4-Lower wind grid and air row;

[0045] 5- upper wind grid wind row;

[0046] 6-connecting part; 7-supporting part; 8-transfer roller of the loading station; 9-heating furnace; 10-glass; 20-asbestos rope; 21-feeler gauge; 22-knife edge ruler. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0048] Example 1

[0049] See also Figures 1 to 7 This example provides a glass tempering cooling device, which includes a loading station, a heating station, a quenching station, a cooling station, and a discharging station arranged in sequence. The loading station is provided with a loading platform and a conveying roller 8, the heating station is provided with a heating furnace 9, the quenching station is provided with a lower pressing mechanism and an upper pressing mechanism, the cooling station is provided with a cooling device, and the discharging station is provided with a conveying roller, wherein:

[0050] The lower pressing mechanism is located below the upper pressing mechanism, and the lower pressing mechanism includes a lower transmission roller 3, a lower air grid air row 4 is arranged between two adjacent lower transmission rollers 3, and the lower transmission roller 3 is arranged in parallel with the conveying roller 8; the upper pressing mechanism includes an upper transmission roller 2, an elastic adjustment component 1 and a driving component, the upper transmission roller 2 is arranged opposite to the lower transmission roller 3, and the elastic adjustment component 1 is connected to the upper transmission roller 2 to adjust the distance between the upper transmission roller 2 and the lower transmission roller 3; the driving component is connected to the upper transmission roller 2 for transmission; an upper air grid air row 5 is arranged between two adjacent upper transmission rollers 2. When the glass 10 is in the quenching station, the glass 10 is located between the upper transmission roller 2 and the lower transmission roller 3, and is against the upper transmission roller 2 and the lower transmission roller 3. During the glass transmission, the upper transmission roller 2 elastically resists the glass, so that the deformation of the edge of the glass can be suppressed by the pressure of the upper transmission roller 2 when the glass is rapidly cooled, thereby solving the problem of bending of the edge of the glass.

[0051] See also Figure 3-4 The elastic adjustment component 1 includes an adjustment rod 101, a telescopic cylinder, a screw 104, a nut 105, a bottom plate 106, an elastic member 107, and a connecting shaft 108. The adjustment rod 101 extends in the horizontal direction. The telescopic cylinder includes a fixed cylinder 102 and a slide cylinder 103. The fixed cylinder 102 is fixedly connected to the adjustment rod 101. The fixed cylinder 102 and the slide cylinder 103 extend in the vertical direction. The upper end of the slide cylinder 103 is sleeved with the fixed cylinder 102. The screw 104 is located in the fixed cylinder 102 and the slide cylinder 103. A nut 105 is provided at the upper end of the screw 104. The nut 105 is arranged in the fixed cylinder 102 and abuts against the inner wall of the fixed cylinder 102. The nut 105 can move along the height direction of the fixed cylinder 102. The screw 1 04, the lower end of the screw rod 104 is arranged in the slide 103, the lower end of the screw rod 104 is connected to the bottom plate 106, the bottom plate 106 and the lower end of the slide 103 are abutted, wherein a gap is maintained between the nut 105 and the upper end of the slide 103; the elastic member 107 is arranged outside the slide 103, one end of the elastic member 107 is connected to the lower end of the fixed cylinder 102, the other end of the elastic member 107 is abutted against the bottom plate 106 and connected to the lower end of the slide 103, the bottom plate 106 is rotatably connected to the connecting shaft 108 (connected through a rotating bearing 109, the bottom plate 106 rotates relative to the connecting shaft 108, and the connecting shaft 108 does not move during the rotation of the bottom plate 106); the connecting shaft 108 is connected to the roller shaft of the upper transmission pressure roller 2, and the connecting shaft 108 extends in the vertical direction.

[0052] Furthermore, the device also includes a displacement adjustment mechanism, which is connected to the upper pressure mechanism and is used to drive the elastic adjustment component 1 (such as connected to the adjustment rod 101) to move in the vertical direction. Under the drive of the displacement adjustment mechanism, the elastic adjustment component 1 moves, thereby driving the upper transmission pressure roller 2 to move, thereby facilitating the adjustment of the distance between the upper transmission pressure roller 2 and the lower transmission roller 3.

[0053] When the tension needs to be adjusted, if the bottom plate 106 is rotated in the clockwise direction to drive the screw rod 104 to rotate, such as when the screw rod 104 rotates upward, the nut 105 does not move, at this time the connecting shaft 108 and the upper transmission roller 2 move upward, the distance between the bottom plate 106 and the nut 105 becomes smaller, and the elastic member is compressed; if the bottom plate 106 is rotated in the counterclockwise direction to drive the screw rod 104 to rotate, such as when the screw rod 104 rotates downward, the nut 105 does not move, at this time the connecting shaft 108 and the upper transmission roller 2 move downward, the distance between the bottom plate 106 and the nut 105 becomes larger, and the elastic member stretches. Alternatively, the elastic adjustment component 1 is driven to move in the vertical direction by the displacement adjustment mechanism.

[0054] When in the quenching station, the glass is placed between the upper transmission roller 2 and the lower transmission roller 3. The upper transmission roller 2 and the glass push the connecting shaft 108 upward, and the bottom plate 106 moves upward to the compression elastic member 107 (the elastic force changes). At the same time, the slide cylinder 103, the screw rod 104, and the nut 105 all move upward. During this process, the position of the fixed cylinder 102 remains unchanged.

[0055] The outer contour of the nut 105 in this example matches the inner contour of the fixing tube 102 . If the nut 105 is a hexagonal nut 105 , the inner circumference of the fixing tube 102 is hexagonal, which prevents the nut 105 from rotating when the screw 104 rotates.

[0056] See also Figure 2 The driving assembly includes a driving component, a first transmission roller 110, a second transmission roller 111, and a transmission belt 112 wound around the first transmission roller 110 and the second transmission roller 111. The driving component is connected to the first transmission roller 110 in transmission connection. The upper transmission roller 2 and the second transmission roller 111 are softly connected through a deformable connecting member 6, that is, one end of the connecting member 6 is connected to the second transmission roller 111, and the other end of the connecting member 6 is connected to the roller shaft of the upper transmission roller 2. The connecting member 6 can be soft steel or a dense spring; the driving component can be a motor.

[0057] Furthermore, the device also includes a support member 7, the opposite ends of which are respectively connected to the adjustment rod 101 and the connecting member 6, and the support member 7 extends in the vertical direction. The support member 7 is provided so that the connection between the elastic adjustment component 1 and the upper transmission roller 2 is more stable.

[0058] The driving assembly of this example further includes a support seat (not shown in the figure) for supporting the driving component. The support seat is connected to the adjustment rod 101. When the adjustment rod 101 moves, the driving assembly moves accordingly.

[0059] In this example, the upper transmission roller 2 and the lower transmission roller 3 are both wrapped with asbestos ropes 20 to prevent damage to the glass.

[0060] Example 2

[0061] This example provides a tempering method using a glass tempering cooling device, comprising:

[0062] S1. Tilt the glass and place it flat on the loading station. The loading station is provided with a conveying roller 8. The conveying roller 8 is arranged parallel to the lower transmission roller 3 of the quenching station. The tilted arrangement specifically means that in the direction of glass conveying, the angle between the front edge of the glass (the edge formed by the line connecting points A and B) and the extending direction of the conveying roller 8 is an acute angle, such as Figure 6 , points A and B are the two vertices on the front of the glass.

[0063] Next, the glass enters the heating furnace 9 and is heated to 620°C.

[0064] S2, the heated glass is moved out of the heating furnace 9 to the quenching station and enters the upper air grid air vent 5 and the lower air grid air vent 4 for tempering, wherein the upper transmission roller 2 is always against the glass under the tension of the elastic member 107 in the elastic adjustment component 1, the upper transmission roller 2 and the lower transmission roller 3 rotate in opposite directions, and the glass is tilted on the lower transmission roller 3 of the quenching station; at this time, the tilted glass edge is inhibited from deforming under the action of the upper transmission roller 2 and the lower transmission roller 3, and the tilted glass ensures that the glass edge can always contact the upper transmission roller 2 and the lower transmission roller 3, and inhibits the deformation of the glass. The temperature of the glass after quenching is about 400℃.

[0065] In this step, the glass is placed on the lower transmission roller 3 of the quenching station at an angle. Figure 7 , points A and B are the two vertices of the front edge of the glass, C is the distance between two adjacent lower transmission rollers 3, and D is the vertical distance between point A and point B in the transmission direction, D≥C.

[0066] In this step, before the glass is moved out to the quenching station, the distance L between the upper transmission roller 2 and the lower transmission roller 3 of the quenching station and the tension F of the elastic member 107 in the elastic adjustment assembly 1 are adjusted, wherein the distance L between the upper transmission roller 2 and the lower transmission roller 3 is obtained by the following formula:

[0067] M = T-2;

[0068] L = M ± 20% M;

[0069] Where T is the glass thickness.

[0070] The tension F of the elastic member 107 in the elastic adjustment assembly 1 is obtained by the following formula:

[0071] F = f ± 10% f;

[0072] f = 1000 × T / 6;

[0073] Where T is the glass thickness and the unit of f is N / ㎡.

[0074] For example, the glass thickness T is 8 mm, and the distance L between the upper transmission roller 2 and the lower transmission roller 3 is 4.8-7.2 mm. f = 1000 × 8 / 6 = 1333 N / ㎡, and the range of F is 1199.7-14663.3.

[0075] Before step S2, the upper transmission roller 2 and the lower transmission roller 3 start to transmit, and the transmission directions of the upper transmission roller 2 and the lower transmission roller 3 are opposite.

[0076] S3. The glass is rapidly cooled in the quenching station to form stress, and then sent to the cooling device to cool to room temperature, and then transported to the unloading table.

[0077] S4. Testing the glass 10: Use a 300 mm long blade ruler 22 and a 0.05 mm thick feeler gauge 21 to measure the deformation of the glass 10 after cooling (see Figure 8 ), a knife edge ruler 22 is placed under the glass, the edge of the knife edge ruler 22 and the edge end face of the glass 10 are located in the same vertical plane, and a feeler gauge 21 is used to detect the size of the gap between the glass and the knife edge ruler 22. If the gap in the deformation area a or the deformation area b does not exceed the thickness of the feeler gauge 21, the glass is qualified; if the gap in the deformation area a or the deformation area b exceeds the thickness of the feeler gauge 21, the glass is unqualified, then the D of the placed glass is increased by 40-60mm (such as 50mm), and at the same time, the tension of the elastic member 107 in the elastic adjustment component 1 is increased by 5-15%.

[0078] The tested glass is reprocessed according to steps S1-S3 until the gaps between area a and area b are both less than 0.05 mm during the test in step S4, and the glass is considered qualified.

[0079] Before step S1, the parameter values ​​of heating, quenching and cooling are set.

[0080] The following provides examples 3-4 and comparative examples 1-2:

[0081] Example 3

[0082] The glass thickness is 6 mm and is processed according to the tempering method of Example 2.

[0083] Example 4

[0084] The glass thickness is 8 mm and is processed according to the tempering method of Example 2.

[0085] Comparative Example 1

[0086] The thickness of the glass is 6 mm. The difference from Example 1 is that the glass is not tilted in steps S1 and S2, and the front edge of the glass is parallel to the conveying roller 8.

[0087] Comparative Example 2

[0088] The thickness of the glass is 6 mm. The difference from Example 1 is that in step S2, no pressing mechanism is provided.

[0089] Test results of the glasses of Examples 3-4 and Comparative Examples 1-2

[0090]

[0091] In the above table, the vertical side of the glass refers to the side perpendicular to the conveyor roller, and the parallel side of the glass refers to the side parallel to the conveyor roller.

[0092] The glass tempering cooling device and tempering cooling method provided in this example, by tilting the glass and setting an upper pressure mechanism at the quenching station, can suppress the deformation of the glass edge during quenching through the pressure of the upper transmission roller and the tilting transmission of the edge, thereby solving the problem of glass edge bending. By adjusting the placement angle of the upper glass, the distance between the upper transmission roller and the lower transmission roller, and the tension of the elastic member in the elastic adjustment component, the deformation of the glass during the rapid cooling process can be suppressed, thereby achieving the effect of reducing the bending of the glass edge.

[0093] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A glass tempering cooling device, characterized in that: It includes a quenching station, which is located at the outlet of the heating furnace. The quenching station is provided with a down-pressing mechanism and an up-pressing mechanism. The down-pressing mechanism is located below the up-pressing mechanism, and the down-pressing mechanism includes a lower transmission roller. The upper pressure mechanism includes an upper transmission pressure roller, an elastic adjustment component, and a driving component. The upper transmission pressure roller is arranged opposite to the lower transmission roller. The elastic adjustment component is connected to the upper transmission pressure roller so that the upper transmission pressure roller elastically resists the glass located on the lower transmission roller; the driving component is in transmission connection with the upper transmission pressure roller.

2. The glass tempering cooling device according to claim 1, characterized in that: The elastic adjustment assembly includes an adjusting rod, a telescopic cylinder, a screw, a nut, a base plate, an elastic member, and a connecting shaft. The telescopic cylinder includes a fixed cylinder and a sliding cylinder. The fixed cylinder is connected to the adjusting rod, and the fixed cylinder extends in the vertical direction. The upper end of the sliding cylinder is sleeved with the fixed cylinder. The upper end of the screw is provided with the nut, and the nut is arranged in the fixed cylinder and abuts against the inner wall of the fixed cylinder. The lower end of the screw is arranged in the sliding cylinder, and the lower end of the screw is connected to the base plate, and the base plate abuts against the lower end of the sliding cylinder; the elastic member is arranged outside the sliding cylinder, one end of the elastic member is connected to the lower end of the fixed cylinder, and the other end of the elastic member abuts against the base plate and is connected to the lower end of the sliding cylinder, and the base plate is rotatably connected to the connecting shaft; the connecting shaft is connected to the roller shaft of the upper transmission roller, and the connecting shaft extends in the vertical direction.

3. The glass tempering cooling device according to claim 2, characterized in that: The outer peripheral contour of the nut is matched with the inner peripheral contour of the fixing cylinder.

4. The glass tempering cooling device according to claim 1, characterized in that: The driving assembly includes a driving component, a first transmission roller, a second transmission roller, and a transmission belt wound around the first transmission roller and the second transmission roller. The driving component is connected to the first transmission roller, and the upper transmission pressure roller is connected to the second transmission roller.

5. The glass tempering cooling device according to claim 4, characterized in that: The device also includes a connecting piece, one end of which is connected to the second transmission roller, and the other end of which is connected to the roller shaft of the upper transmission pressure roller.

6. The glass tempering cooling device according to claim 5, characterized in that: The device also includes a support member, and opposite ends of the support member are respectively connected to the adjustment rod and the connecting member.

7. A tempering cooling method using the glass tempering cooling device according to any one of claims 1 to 6, characterized in that: include: S1, the glass passes through the loading station and the heating station in sequence, wherein the glass is placed at an angle; S2, the heated glass is moved to the quenching station for quenching, wherein the upper transmission roller is always against the glass, and the upper transmission roller rotates in the opposite direction to the lower transmission roller; S3. The glass is cooled to room temperature.

8. The tempering cooling method according to claim 7, characterized in that: In step S2, the tension F of the elastic member in the elastic adjustment assembly is obtained by the following formula: F = f ± 10% f; f = 1000T / 6; Where T is the glass thickness and the unit of f is N / ㎡.

9. The tempering cooling method according to claim 7, characterized in that: In step S2, the distance between the upper transmission roller and the lower transmission roller is L, which is obtained by the following formula: M = T-2; L = M ± 20% M; Where T is the glass thickness.

10. The tempering cooling method according to claim 7, characterized in that: In step S2, in the glass conveying direction, the angle between the front edge of the glass and the extension direction of the lower transmission roller is an acute angle; the gap between two adjacent lower transmission rollers is C, and the distance between the two vertices of the front edge of the glass in the glass conveying direction is D, D≥C.

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