Vacuum glass processing chamber, lamination process and production line

Abstract

The present invention relates to a vacuum glass processing chamber, a lamination process and a production line, and belongs to the technical field of vacuum glass production. The vacuum glass processing chamber comprises a vacuum chamber body, wherein the vacuum chamber body is provided with a conveyance assembly, and a heating assembly is correspondingly mounted in the vacuum chamber body; a downward-pressing vertical plate assembly is provided inside the vacuum chamber body and comprises downward-pressing vertical plates; the conveyance assembly comprises a lower protective plate for bearing glass to be processed and an upper protective plate for covering said glass; and the heating assembly heats said glass between the downward-pressing vertical plates. The vacuum glass processing chamber, the production line and the lamination process in the present invention greatly shorten the production time of vacuum glass and improve the production efficiency.

Description

Vacuum glass processing chamber and lamination process and production line Technical Field

[0001] This invention relates to a vacuum glass processing chamber, a lamination process, and a production line, belonging to the field of vacuum glass production technology. Background Technology

[0002] Vacuum glass is a new type of deep-processed glass product, consisting of two or more pieces of glass separated by a support, and a vacuum cavity formed between the glass pieces by sealing the perimeter.

[0003] Vacuum glass blocks heat transfer by eliminating gas convection and gas molecule conduction, while a low-emissivity film is coated on the inner surface of the glass to reduce radiative heat transfer, thus completely blocking the path of radiative heat propagation.

[0004] A Chinese invention patent with publication number CN113321432A describes a manufacturing device comprising: a base frame; a lower heating element; and a sealing device. The glass assembly has an upper glass sheet, a lower glass sheet, and a sealing frame located between the upper and lower glass sheets. The sealing frame has at least one notch for evacuation. The sealing device includes a box for holding solder, a pusher plate for pushing the solder in the box to the notch, and a first driving structure for moving the pusher plate. Because the sealing frame has at least one notch for evacuation, the vacuum glass is interconnected internally and externally through the notch. This allows gas released during the melting of the sealing frame to be extracted through the notch, preventing gas from being trapped inside the cavity and thus reducing the vacuum level of the vacuum glass. Furthermore, the sealing device then uses the pusher plate to push the molten solder to the notch, sealing the notch with solder within the vacuum furnace.

[0005] Vacuum glass production requires three basic conditions.

[0006] 1. A vacuum needs to be created to evacuate the air inside the vacuum glass chamber to a certain degree of vacuum. For example, to evacuate to... Pa.

[0007] 2. Inorganic welding materials that require high-temperature melting of vacuum glass.

[0008] 3. A certain amount of uniform pressure is required to ensure that the welding material between the upper and lower glass panes of the vacuum glass is welded together more evenly under pressure.

[0009] All three conditions mentioned above are indispensable.

[0010] The existing technology has at least the following technical problems:

[0011] When welding tempered glass sheets together, two methods are typically used to prevent bubbles from forming when the pre-cured glass powder melts upon heating. The first method involves placing a very thick and heavy plate on the tempered glass sheets to create pressure, which helps the molten glass powder adhere better to the two sheets and prevents bubbles from forming during the melting process. The second method involves adding several clamps to the tempered glass sheets to apply pressure, which also helps the molten glass powder adhere better to the two sheets and prevents bubbles from forming during the melting process.

[0012] However, both of these methods have problems:

[0013] 1. During the welding process of sealed vacuum glass, the solder needs to be pressed against the upper glass plate by a heavy pressure plate to press and heat the vacuum glass together. Otherwise, bubbles will form after the solder melts, affecting the welding effect. When the vacuum glass is put into and taken out of the chamber, the heavy plate goes in and out with the glass. Removing the heavy plate too early will cause a temperature difference between the top and bottom surfaces of the vacuum glass. This temperature difference will cause different degrees of expansion and contraction, resulting in warping. Excessive warping can cause the vacuum glass to break. Using a heavy plate to provide pressure makes it impossible to use infrared heating because the thick heavy plate covering the tempered glass to be welded makes it difficult for heat to penetrate. Therefore, a heating strip needs to be placed between the heavy plate and the tempered glass to be welded. Heating with a heating strip is not as uniform or convenient as infrared heating, so the heating effect is also poor. In practice, if the upper platen is to provide pressure that meets the standards, the upper platen will be very thick. Heating the glass until the solder melts will also cause the upper platen to accumulate a lot of heat, resulting in a very long cooling time for the upper platen during the cooling process, which also wastes a lot of heat. The cooling time is usually 4-6 hours, resulting in very low production efficiency.

[0014] 2. When applying pressure using a dense array of clamps, infrared heating tubes can be used for heating. However, since there is no covering on the vacuum glass for temperature protection, it needs to be cooled to below 250 degrees Celsius inside the vacuum chamber before it can be removed. However, if the time spent inside the vacuum chamber is too long, the tempered glass that makes up the vacuum glass is prone to deterioration due to the high temperature inside the vacuum chamber for too long, which reduces product quality. Similarly, the natural cooling due to prolonged stay leads to low production efficiency.

[0015] The technique of using clamps to apply pressure for vacuum glass bonding, compared to using heavy plates, involves an additional clamp removal process, increasing equipment and labor costs. Furthermore, the current clamp installation and removal are primarily done manually, requiring the hiring of specialized personnel, further increasing costs.

[0016] When the clamps are heated to high temperatures inside the vacuum chamber, the torsion springs inside the clamps will experience a decrease in torque due to annealing. The decrease in torque of the torsion springs in each clamp is different, resulting in uneven stress on the vacuum glass during the welding process, which leads to poor adhesion of the vacuum glass and air leakage. Summary of the Invention

[0017] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a vacuum glass processing chamber and lamination process, which greatly shortens the production time and improves the production efficiency of vacuum glass.

[0018] The vacuum glass processing chamber of the present invention includes a vacuum chamber body, a transport component, a heating component installed inside the vacuum chamber body, a pressure plate assembly inside the vacuum chamber body, the pressure plate assembly including a pressure plate, the transport component including a lower protective plate for carrying the glass to be processed and an upper protective plate covering the glass to be processed, and the heating component heating the glass to be processed between the pressure plates.

[0019] The pressure plate assembly includes several rows of evenly arranged pressure plates. Each row of pressure plates consists of several pressure plates. Pressure bars are installed on the pressure plates in the same row to drive the pressure plates to move up and down. Vertical lifting rods are installed at both ends of the pressure bars. A lifting device is provided outside the vacuum chamber. The lifting device drives the pressure plates to move up and down through the lifting rods and pressure bars.

[0020] In this invention, a lifting device provided outside the vacuum chamber drives the lower pressure bar to move up and down through a lifting rod passing through the wall of the vacuum chamber. A sealing structure is provided at the point where the lifting rod passes through the chamber wall to maintain the airtightness of the vacuum chamber when driving the lower pressure bar.

[0021] The heating assembly of the present invention includes an upper heating device disposed in the gap between adjacent lower pressure plates of the lower pressure row, for directly heating the upper protective plate and the glass to be processed without obstruction.

[0022] Furthermore, the vacuum chamber has outwardly extending inspection ports on both sides, with both ends of the pressure bar extending into the inspection ports. The lifting rod is located inside the inspection port, and the lower wall of the inspection port is connected to a telescopic sealing sleeve (which is one implementation of the above-mentioned sealing structure). One end of the lifting rod is connected to the pressure bar, and the other end extends into the telescopic sealing sleeve. The lifting device drives the lifting rod through the telescopic sealing sleeve.

[0023] Furthermore, the lower protective plate and the upper protective plate include, but are not limited to, metal plates or glass plates.

[0024] Furthermore, the top of the pressing plate is provided with a collar that engages with the pressure bar, and the bottom of the pressing plate is provided with a heating avoidance tip.

[0025] Furthermore, the transport component includes several rows of support columns and a movable bracket. The top of the support columns is equipped with a bearing, and the bottom of the movable bracket is provided with a slide rail that cooperates with the bearing. The slide rail travels on the bearing.

[0026] Furthermore, the heating assembly also includes a lower heating device, which is disposed between two adjacent rows of support columns. That is, the heating assembly includes both an upper heating device and a lower heating device. The upper heating device is disposed between the lower pressure rows (specifically, the upper heating device is disposed in the gap between adjacent lower pressure plates of the lower pressure row), and the lower heating device is disposed between two adjacent rows of support columns.

[0027] Furthermore, the vacuum chamber is equipped with a support assembly, and the transport assembly is installed on the support assembly. The support assembly, transport assembly, heating assembly, lower pressure plate assembly, lower protective plate and upper protective plate constitute a processing unit. The number of processing units set in the vacuum chamber includes, but is not limited to, one, two or three sets.

[0028] It should be noted that during the processing of vacuum glass, the transport components need to be moved below the pressure plate assembly so that the pressure plate assembly can press down the protective plate from above.

[0029] The vacuum glass processing production line of the present invention includes the aforementioned vacuum glass processing chamber. The inlet and outlet are respectively provided with a multi-layer feeding platform and a multi-layer discharging platform. The discharging end of the multi-layer discharging platform is connected to a lifting and moving platform. The discharging end of the lifting and moving platform is connected to a cooling platform. The discharging end of the cooling platform is connected to a glass unloading station. The discharging end of the glass unloading station and the feeding end of the multi-layer feeding platform are connected to a glass loading station. The glass loading station moves between the multi-layer lifting platform and the glass unloading station via a track.

[0030] The processing technology based on the above-described vacuum glass processing chamber described in this invention includes,

[0031] Step 1: Glass assembly. Place the lower protective plate on the movable bracket beforehand. Place the tempered glass with glass powder and support points pre-cured around the upper surface on the lower protective plate. Align the second glass plate with the tempered glass from above to form a double-layer glass. Cover the double-layer glass with the upper protective plate.

[0032] Step two: The next moving bracket pushes the previous moving bracket into the vacuum glass processing chamber, and the push rod pushes the moving bracket that has entered the vacuum chamber to the processing position.

[0033] Step 3: Vacuum glass processing chamber is vacuumed. After vacuuming, it is heated. After the pre-cured glass powder softens, the vertical panel assembly is pressed down and heated again. The cured glass powder melts and the two tempered glass pieces are welded together (i.e., the double-layered glass is welded into one piece).

[0034] Step 4: Stop heating and wait for the glass powder to solidify after 3-5 minutes of cooling. Then, press down the upright plate assembly and lift it up. After the vacuum glass processing chamber is broken, open the doors on both sides. The mobile tray to be processed (i.e., the last mobile tray with the glass to be processed) enters the vacuum glass processing chamber and pushes out the mobile tray inside the vacuum chamber. The pushed-out mobile tray is moved to the cooling area for cooling.

[0035] Step 5: After cooling to the specified temperature, remove the upper protective plate and remove the vacuum glass from the lower protective plate to complete the vacuum glass production.

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] This invention utilizes thinner upper and lower protective plates to provide temperature protection for the glass. After exiting the vacuum chamber, the difference in heat loss between the upper and lower protective plates is minimal, resulting in a very small temperature difference between them. The thinner and lighter upper protective plate effectively offsets the slight warping of the glass caused by this minimal temperature difference, preventing warping during the cooling process of vacuum glass due to excessive differences in expansion and contraction coefficients. This avoids the need for heavy, thick pressure plates to prevent warping. Furthermore, the thinner upper protective plate stores less heat, allowing the heat from the infrared heating element to quickly penetrate and act on the tempered glass to be welded, resulting in excellent heating performance. Furthermore, after the vacuum glass is removed from the vacuum chamber, forced cooling can be used to cool the vacuum glass covered by the upper and lower protective plates. The cold air from the forced cooling acts on the upper and lower protective plates, and the vacuum glass only transfers heat to the upper and lower protective plates. The temperature difference in this process is very small, but the transfer speed is fast, which avoids the rapid warping and breakage caused by the vacuum glass directly contacting the cold air with a huge temperature difference. This allows the vacuum glass to be cooled down to the set temperature quickly, greatly shortening the production cycle.

[0038] Unlike existing technologies that use heavy plates for pressurization and clamping, this application uses a lower pressure plate for pressurization, with an infrared heating tube between adjacent lower pressure plates to heat the vacuum glass. This overcomes the problem of heavy plates blocking infrared rays and causing the heat to act on the glass to be welded too slowly, allowing infrared heating to be applied. At the same time, the coverage of the upper and lower protective plates also overcomes the problem of not being able to remove the glass from the vacuum chamber too early due to clamping. This improves the heating effect, prevents the tempered glass from deteriorating due to prolonged stay in the vacuum chamber, shortens the production cycle, and eliminates the clamping and unclamping processes.

[0039] This invention divides the existing thick pressure block into a lower pressure plate and an upper protective plate. The lower pressure plate provides sufficient pressure to prevent air bubbles from forming during the solder melting and bonding process. Simultaneously, the lower pressure plate remains within the vacuum chamber, preventing heat loss. The lower pressure plate utilizes its own weight for downward pressure, and the lifting device merely lifts and lowers it, providing stable and constant pressure. Furthermore, it eliminates the need for a power source to penetrate the vacuum chamber or inspection port, avoiding sealing problems caused by penetration. While the lower pressure plate remains within the vacuum chamber and continues to pressurize and heat the next batch of vacuum glass, its minimal heat loss prevents energy waste caused by reheating. Using thinner upper and lower protective plates minimizes heat accumulation and allows for forced cooling, significantly reducing production time.

[0040] The present invention does not have a power mechanism installed in the vacuum chamber, and also avoids the power shaft extending into the vacuum chamber. It only uses the pushing force of the rear moving bracket to complete the entry and exit of the chamber.

[0041] This invention allows multiple processing units to simultaneously enter the vacuum chamber for operation, greatly improving production efficiency.

[0042] This invention replaces the conveyor roller with support columns and bearings. Since this invention is not for continuous production, it needs to be supported at the processing position for a long time. Wide conveyor rollers are prone to bending when supported for a long time under high temperature heating, which affects production. The support columns and bearings set in the vertical direction do not have the above problems.

[0043] The vacuum chamber of this invention has no internal power device and does not consider the problem of bending of the conveyor rollers. Only the heating tube needs to be replaced at the inspection port, which can ensure that the interior of the vacuum chamber does not need to be disassembled for three years. Attached Figure Description

[0044] Figure 1 is an external structural diagram of Embodiment 1 of the present invention;

[0045] Figure 2 is a diagram of the internal structure at point A in Figure 1;

[0046] Figure 3 is a schematic diagram of the internal longitudinal cross-sectional structure of the vacuum chamber in Embodiment 1 of the present invention;

[0047] Figure 4 is a magnified view of part B in Figure 3;

[0048] Figure 5 is a schematic diagram of the internal transverse cross-sectional structure of the vacuum chamber in Embodiment 1 of the present invention;

[0049] Figure 6 is a magnified view of part C in Figure 5;

[0050] Figure 7 is a schematic diagram of the downward pressing plate structure of Embodiment 1 of the present invention;

[0051] Figure 8 is a flowchart of the lamination process in Embodiment 1 of the present invention;

[0052] In the picture:

[0053] 1. Vacuum chamber; 11. Inspection port; 12. Processing unit; 13. Sealing plate; 14. Chamber door;

[0054] 21. Lower pressure plate; 211. Collar; 212. Heated clearance tip; 22. Lifting rod; 23. Lifting device; 24. Transmission connecting rod; 25. Telescopic sealing sleeve; 26. Tray; 27. Pressure bar;

[0055] 31. Load-bearing beam; 32. Reinforcing rib; 33. Opening;

[0056] 41. Support column; 42. Slide rail; 43. Bearing; 44. Movable bracket;

[0057] 51. Upper heating device; 52. Lower heating device; 53. Infrared heating tube; 54. Arc-shaped reflector; 55. Reflective groove;

[0058] 61. Upper protective plate; 62. Lower protective plate; 63. Glass to be processed;

[0059] 100. Multi-layer feeding platform; 200. Vacuum glass processing chamber; 300. Multi-layer discharging platform; 400. Lifting and moving platform; 500. Cooling platform; 600. Glass unloading station; 700. Glass loading station; 800. Track; 900. Multi-layer lifting platform. Embodiments of the present invention

[0060] Example 1

[0061] As shown in Figures 1 to 7, the vacuum glass processing chamber of the present invention includes a vacuum chamber body 1. The vacuum chamber body 1 has three inlets and three outlets at its two ends, respectively. Doors 14 are provided on the inlets and outlets. Inside the vacuum chamber body 1, three processing units 12 are arranged from bottom to top, with each set of inlets and outlets corresponding to one processing unit 12. Three sets of inspection ports 11 are provided on the side walls of both sides of the vacuum chamber body 1, corresponding to the positions of the three processing units 12. Sealing plates 13 are installed on the openings of the inspection ports 11. Each processing unit 12 includes a support assembly, on which a transport assembly is mounted. A heating assembly is installed inside the vacuum chamber body 1, and a pressure plate assembly is installed inside the vacuum chamber body 1 corresponding to the support assembly. The transport assembly transports the glass to be processed through a lower protective plate 62, and the glass to be processed is covered by an upper protective plate 61. The support assembly includes a load-bearing beam 31 and reinforcing ribs 32. The reinforcing ribs 32 are located below the load-bearing beam 31, providing support to the load-bearing beam 31 and preventing it from bending under load. The two ends of the load-bearing beam 31 and the reinforcing rib 32 are connected to the side wall of the vacuum chamber 1.

[0062] An opening 33 for weight reduction is provided on the reinforcing rib 32.

[0063] The transport assembly includes several rows of support columns 41 and a movable bracket 44 located on the support assembly. The support columns 41 are mounted on the weighing beam, and bearings 43 are installed at the top of the support columns 41. The bearings 43 can be traditional rolling bearings or universal bullseye bearings. The bottom of the movable bracket 44 is provided with a slide rail 42 that cooperates with the bearings 43. The slide rail 42 travels on the bearings 43, allowing the movable bracket 44 to slide easily on the support assembly. In order to ensure that the vacuum chamber 1 does not need to be opened for maintenance for a long time, no power unit is installed inside the vacuum chamber 1. Instead, a power unit outside the vacuum chamber 1 pushes the subsequent movable bracket 44 forward, ejecting the movable bracket 44 after the vacuum glass has been processed. The ejected movable bracket 44 is then picked up by the power unit of the subsequent processing steps of the vacuum chamber 1, thus achieving the goal of not installing a power unit. This application replaces the existing roller shaft with a bearing 43 mounted on the top of the support column 41. Because the technical solution described in this application is not a continuous production device, heating and pressure are required at a fixed position within the vacuum chamber 1. High temperatures would soften the roller shaft, and downward pressure would cause it to bend. A bent roller shaft would affect the transport and production of vacuum glass and could potentially lead to the formation of warped glass. This application abandons the long, strip-shaped roller shaft solution and uses a vertical support column 41 in conjunction with the bearing 43. Its extension direction is consistent with the downward pressure direction, so deformation will not occur. This ensures product quality and allows for extended periods of maintenance without opening the chamber once the application is put into use.

[0064] The pressure plate assembly includes several rows of evenly arranged pressure plates, each row consisting of several pressure plates 21. Pressure bars 27 are installed on the pressure plates 21 in the same row to drive their up-and-down movement. The pressure bars 27 extend into the inspection ports 11 on both sides of the vacuum chamber 1. A transmission link 24 is provided inside the inspection port 11, connecting multiple pressure bars 27. The transmission link 24 is also connected to a vertical lifting rod 22. The pressure plate assembly also includes a lifting device 23, which drives the pressure plates up and down via the lifting rod 22 and pressure bars 27. The lifting device 23 includes, but is not limited to, hydraulic cylinders, pneumatic cylinders, electric lead screws, and cams driven by motors. This application preferably uses a lifting hydraulic cylinder, whose piston rod drives the pressure plates up and down via the lifting rod 22 and pressure bars 27. The lifting device 23 of the lower pressing plate assembly in the bottommost processing unit 12 is installed on the ground, and its movable end is connected to drive the lifting rod 22 in the corresponding access port 11 of the bottommost processing unit 12. The lifting device 23 of the lower pressing plate assembly in the uppermost processing unit 12 is installed on the top of the corresponding access port 11 of the bottommost processing unit 12, and so on.

[0065] In this embodiment, the lifting device 23 provided outside the vacuum chamber 1 drives the lower pressure bar to move up and down through the lifting rod 22 passing through the wall of the vacuum chamber 1, and a sealing structure is provided at the point where the lifting rod 22 passes through the chamber wall to maintain the airtightness of the vacuum chamber 1 when driving the lower pressure bar.

[0066] The inspection port 11 extends outward from both sides of the vacuum chamber 1. The two ends of the pressure bar 27 extend into the inspection port 11. The lifting rod 22 and the transmission connecting rod 24 are located inside the inspection port 11. A through hole is provided on the lower wall of the inspection port 11, and the through hole is sealed by a telescopic sealing sleeve 25. The telescopic sealing sleeve 25 is one implementation of the aforementioned sealing structure. The telescopic sealing sleeve 25 includes, but is not limited to, a bellows or a rubber sleeve. The telescopic sealing sleeve 25 is located inside the inspection port 11. In this application, the lifting rod 22 is located at the top of the telescopic sealing sleeve 25, and the movable end of the lifting device 23 extends into the telescopic sealing sleeve 25, driving the lifting rod 22 through the telescopic sealing sleeve 25. Alternatively, the telescopic sealing sleeve 25 can be located outside the inspection port 11, with the lifting rod 22 extending into the telescopic sealing sleeve 25, and the movable end of the lifting device 23 located at the bottom of the telescopic sealing sleeve 25, driving the lifting rod 22 through the telescopic sealing sleeve 25.

[0067] The top of the pressing plate 21 is provided with a collar 211 that fits onto the pressure bar 27. Each row of pressing plates has a collar 211 fitted onto a pressure bar 27. The bottom of the pressing plate 21 is provided with a heating avoidance tip 212 to ensure that the infrared heating tube 53 does not block the heating of the glass 63 to be processed during the pressing process. The height of the collar 211 is greater than the height of the pressure bar 27, so that the pressure bar 27 has adjustment space within the collar 211. The pressure bar 27 is connected to the transmission connecting rod 24. The top of the lifting rod 22 is provided with a tray 26, which supports the transmission connecting rod 24.

[0068] The heating assembly in this embodiment includes an upper heating device 51 and a lower heating device 52. The upper heating device 51 is disposed between the lower pressure rows (specifically, the upper heating device 51 is disposed in the gap between adjacent lower pressure plates 21 of the lower pressure rows) to heat the glass 63 to be processed and the upper protective plate 61 exposed between the lower pressure rows; the lower heating device 52 is disposed between two adjacent rows of support columns 41 to heat the lower protective plate 62 and the glass 63 to be processed exposed between the support columns 41. The upper heating device 51 includes an infrared heating tube 53 and an arc-shaped reflector 54; the lower heating device 52 includes an infrared heating tube 53 and a reflective groove 55. The openings of the arc-shaped reflector 54 in the upper heating device 51 and the reflective groove 55 in the lower heating device 52 both face the glass 63 to be processed. The infrared heating tube 53 is installed inside the openings of the arc-shaped reflector 54 and the reflective groove 55. The arc-shaped reflector 54 of the upper heating device 51 reflects the infrared rays irradiated upwards towards the glass 63 to be processed, avoiding waste of infrared heating energy, thereby improving heating efficiency and rate, and preventing heating of the pressure bar 27 or support components. Multiple infrared heating tubes 53 are installed in the reflective groove 55 of the lower heating device 52, reflecting the infrared rays irradiated downwards towards the glass 63 to be processed, avoiding waste of infrared heating energy, thereby improving heating efficiency and rate, and simultaneously blocking infrared rays from heating the load-bearing beam 31 and the reinforcing rib 32, preventing the load-bearing beam 31 and the reinforcing rib 32 from being softened by heat and bending.

[0069] The ends of the infrared heating tubes 53 in the lower heating device 52 and the upper heating device 51 extend into the inspection port 11 for fixation and electrical connection, so as to facilitate maintenance and replacement of the infrared heating tubes 53 through the inspection port 11. This effectively avoids opening the vacuum chamber 1 for maintenance.

[0070] Both the lower protective plate 62 and the upper protective plate 61 are made of relatively thin materials. This design ensures uniform protection for the glass to be processed.

[0071] The upper protective plate 61 and the lower protective plate 62 sandwich the glass 63 to be processed. The upper protective plate 61 and the lower protective plate 62 are 8-15mm thick and are made of glass or metal, with tempered glass being preferred. In existing technologies, the thickness of the supporting plate is often more than 50mm. The heat absorption of the upper protective plate 61 and the supporting plate, which are of the same area, is significantly different. When the vacuum glass is removed from the vacuum chamber 1 after processing, the difference in the amount of heat carried is also significant. Since the heat after leaving the chamber can be considered wasted heat, the upper protective plate 61 wastes far less heat than the supporting plate. At the same time, the difference in the amount of heat that needs to be removed to reach the same temperature is also significant. Under the same forced cooling intensity, the upper protective plate 61 takes much less time than the supporting plate. Experiments show that it takes 4-6 hours for the supporting plate to reach the non-deformation temperature (70℃), while it takes only 35-40 minutes for the upper protective plate 61 to reach the non-deformation temperature (70℃), greatly improving production efficiency.

[0072] As shown in Figure 8, the vacuum glass processing production line of the present invention includes the above-mentioned vacuum glass processing chamber. The inlet and outlet are respectively provided with a multi-layer feeding platform 100 and a multi-layer discharging platform 300. The multi-layer feeding platform 100 simultaneously puts the glass to be processed 63 mounted on the movable bracket 44 into the processing unit 12 in the vacuum glass processing chamber 200. The multi-layer discharging platform 300 simultaneously receives the vacuum glass processed in the processing unit 12 in the vacuum glass processing chamber 200. The discharge end of the multi-layer discharge platform 300 is connected to a lifting and moving platform 400. The lifting and moving platform 400 guides the glass 63 to be processed, which is mounted on the moving bracket 44 in multiple processing units 12, to the cooling platform 500 layer by layer. The discharge end of the cooling platform 500 is connected to a glass unloading station 600. The discharge end of the glass unloading station 600 and the feeding end of the multi-layer feeding platform 100 are connected to a glass loading station 700. The glass loading station 700 moves between the multi-layer lifting platform 900 and the glass unloading station 600 via the track 800 to realize an automated production process.

[0073] The processing technology based on a vacuum glass processing chamber described in this invention includes the following steps:

[0074] Step 1, glass assembly: Place the tempered glass with pre-cured glass powder and support points on the upper surface around the edges onto the lower protective plate 62. Place the lower protective plate 62 on the movable bracket 44 beforehand. Align the second glass plate with the tempered glass from above to form a double-layer glass. Cover the double-layer glass with the upper protective plate 61.

[0075] Step 2: The next moving bracket pushes the previous moving bracket into the vacuum glass processing chamber, and the push rod pushes the moving bracket 44, which has entered the vacuum chamber 1, to the processing position.

[0076] Step 3: Vacuum glass processing chamber is vacuumed. After vacuuming, it is heated. After the pre-cured glass powder softens, the vertical panel assembly is pressed down and heated again. The cured glass powder melts and the two tempered glass pieces are welded together (i.e., the double-layered glass is welded into one piece).

[0077] Step 4: Stop heating and wait for the glass powder to solidify after cooling for 3-5 minutes. Then, press down the upright plate assembly and lift it up. After the vacuum glass processing chamber is broken, open the doors on both sides. The mobile bracket to be processed (i.e., the last mobile bracket with the glass to be processed) enters the vacuum glass processing chamber and pushes out the mobile bracket 44 in the vacuum chamber 1. The pushed-out mobile bracket 44 is moved to the cooling area for cooling.

[0078] Step 5: After cooling to the specified temperature, remove the upper protective plate 61 and remove the vacuum glass from the lower protective plate 62 to complete the vacuum glass production.

[0079] The descriptions of the orientation and relative positional relationships of the structures in this invention, such as front, back, left, right, up, and down, do not constitute a limitation of this invention, but are merely for the convenience of description.

Claims

1. A vacuum glass processing chamber, comprising a vacuum chamber body (1), the vacuum chamber body (1) being provided with a transport assembly, and a heating assembly correspondingly installed inside the vacuum chamber body (1), characterized in that, The vacuum chamber (1) is equipped with a pressure plate assembly, which includes a pressure plate (21). The transport assembly includes a lower protective plate (62) that carries the glass to be processed and an upper protective plate (61) that covers the glass to be processed. The heating assembly heats the glass to be processed between the pressure plates (21). The pressure plate assembly includes several rows of evenly arranged pressure plates. Each row of pressure plates consists of several pressure plates (21). Pressure bars (27) that drive the pressure plates (21) to move up and down are installed on the pressure plates (21) in the same row. Vertical lifting rods (22) are installed at both ends of the pressure bars (27). A lifting device (23) is provided outside the vacuum chamber (1). The lifting device (23) drives the pressure plates to move up and down through the lifting rods (22) and pressure bars (27).

2. The vacuum glass processing chamber according to claim 1, characterized in that, The vacuum chamber (1) has outwardly extending inspection ports (11) on both sides. The two ends of the pressure bar (27) extend into the inspection ports (11). The lifting rod (22) is located inside the inspection port (11). The lower wall of the inspection port (11) is connected to the telescopic sealing sleeve (25). One end of the lifting rod (22) is connected to the pressure bar (27), and the other end extends into the telescopic sealing sleeve (25). The lifting device (23) drives the lifting rod (22) through the telescopic sealing sleeve (25).

3. The vacuum glass processing chamber according to claim 1 or 2, characterized in that, The lower protective plate (62) and the upper protective plate (61) include, but are not limited to, metal plates or glass plates.

4. The vacuum glass processing chamber according to claim 1 or 2, characterized in that, The top of the pressure plate (21) is provided with a collar (211) that is fitted with the pressure bar (27), and the bottom of the pressure plate (21) is provided with a heating avoidance tip (212).

5. The vacuum glass processing chamber according to claim 1 or 2, characterized in that, The transport component includes several rows of support columns (41) and a movable bracket (44). The top of the support column (41) is equipped with a bearing (43), and the bottom of the movable bracket (44) is provided with a slide rail (42) that cooperates with the bearing (43). The slide rail (42) travels on the bearing (43).

6. The vacuum glass processing chamber according to claim 1 or 2, characterized in that, The heating assembly includes an upper heating device (51) and a lower heating device (52). The upper heating device (51) is located between the lower pressure rows, and the lower heating device (52) is located between two adjacent rows of support columns (41).

7. The vacuum glass processing chamber according to claim 1 or 2, characterized in that, The vacuum chamber (1) is equipped with a support assembly, and the transport assembly is installed on the support assembly. The support assembly, transport assembly, heating assembly, lower pressure plate assembly, lower protection plate (62) and upper protection plate (61) constitute a processing unit (12). The number of processing units (12) set in the vacuum chamber (1) includes, but is not limited to, one, two or three sets.

8. A vacuum glass processing production line, comprising the vacuum glass processing chamber according to any one of claims 1-7, characterized in that, The inlet and outlet are respectively equipped with a multi-layer feeding platform (100) and a multi-layer discharging platform (300). The discharge end of the multi-layer discharging platform (300) is connected to a lifting and moving platform (400). The discharge end of the lifting and moving platform (400) is connected to a cooling platform (500). The discharge end of the cooling platform (500) is connected to a glass unloading station (600). The discharge end of the glass unloading station (600) and the inlet end of the multi-layer feeding platform (100) are connected to a glass loading station (700). The glass loading station (700) moves between the multi-layer lifting platform (900) and the glass unloading station (600) via a track (800).

9. A processing method for a vacuum glass processing chamber based on any one of claims 1-7, characterized in that, include, Step 1, glass assembly: Place the lower protective plate (62) on the movable bracket (44) in advance, place the tempered glass with glass powder and support points pre-cured around the glass on the lower protective plate (62), align the second glass plate and cover it to form a double-layer glass, and cover the double-layer glass with the upper protective plate (61). Step 2: The next moving bracket pushes the previous moving bracket into the vacuum glass processing chamber, and the push rod pushes the moving bracket (44) that has entered the vacuum chamber (1) to the processing position; Step 3: Vacuum glass processing chamber is vacuumed. After vacuuming, it is heated. After the pre-cured glass powder softens, the vertical plate assembly is pressed down and heated again. The cured glass powder melts and the two pieces of tempered glass are welded together. Step 4: Stop heating and wait for the glass powder to solidify after cooling for 3-5 minutes. Then, press down the vertical plate assembly to rise. After the vacuum glass processing chamber is broken, open the doors on both sides and the mobile bracket to be processed enters the vacuum glass processing chamber. Push out the mobile bracket (44) inside the vacuum chamber body (1) and move the pushed-out mobile bracket (44) to the cooling area for cooling. Step 5: After cooling down to the specified temperature, remove the upper protective plate (61) and remove the vacuum glass from the lower protective plate (62) to complete the vacuum glass production.

Images