Method for preparing vacuum glass by vacuumizing at normal temperature

Abstract

The invention relates to the technical field of glass manufacturing, and discloses a method for preparing vacuum glass by vacuumizing at normal temperature, which comprises the following steps: S1, splicing two glass substrates, aligning outer side notches of the two glass substrates, inversely placing a vacuum tube at the notch, enabling the sealed end of the vacuum tube to be positioned outside the glass substrate, and placing the vacuum tube in the notch; preliminary connection of the vacuum tube and the glass substrate is realized through sealing treatment; s2, coating the edge opening of the side edge of the glass substrate with a primary sealing rubber strip, and performing primary sealing after the primary sealing rubber strip is cooled and solidified; through the steps of splicing at normal temperature, vacuum extraction, cutting and plugging, nitrogen charging and the like, the vacuum glass is efficiently prepared, the dependence of a traditional process on a high-temperature environment is avoided, the energy consumption is reduced, and the preparation efficiency is improved. Meanwhile, primary sealing and secondary sealing processes and nitrogen charging treatment are combined, so that the sealing performance and the service life of the glass are remarkably improved, and the stability of an internal vacuum environment and the product reliability are ensured.

Description

Technical Field

[0001] This invention relates to the field of glass manufacturing technology, specifically to a method for producing vacuum glass by vacuuming at room temperature. Background Technology

[0002] Vacuum glass is a high-performance material made by forming a vacuum layer between two panes of glass. Its unique structure makes it important in building energy conservation, thermal and sound insulation, and industrial applications. Within the hollow cavity of vacuum glass, the vacuum effectively blocks convective heat transfer from gas molecules, while minimizing heat conduction and radiation, thus significantly improving its thermal insulation performance. Furthermore, compared to traditional insulated glass, vacuum glass offers superior sound insulation because the vacuum layer significantly reduces the propagation and penetration of sound waves. Vacuum glass not only possesses excellent thermal and acoustic properties, but its transparency and mechanical strength also fully meet the application requirements of the building and industrial sectors. Therefore, it is widely used in green buildings, electronic product packaging, and special equipment requiring precision thermal insulation. With the increasing demand for energy conservation and environmental protection, vacuum glass has become a highly regarded advanced material in recent years due to its high energy efficiency.

[0003] However, traditional vacuum glass manufacturing processes face numerous challenges in practical applications. First, the high-temperature melting of the sealing material results in enormous energy consumption, and the production process applies thermal stress to the glass, easily leading to performance degradation and even cracking. Second, the sealing material is affected by thermal expansion and aging during long-term use, causing leakage in the vacuum cavity, directly impacting the heat and sound insulation performance and lifespan of the vacuum glass. Furthermore, the high-temperature sealing process is complex and time-consuming, hindering large-scale industrial production and placing high demands on equipment technology, further increasing production costs. For temperature-sensitive applications such as display packaging, traditional high-temperature processes are insufficient, which to some extent limits the widespread application of vacuum glass in specific fields. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a method for producing vacuum glass at room temperature by vacuuming, which solves the problems of high energy consumption, complex procedures, and difficulty in maintaining stable sealing performance over a long period of time in traditional vacuum glass manufacturing processes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for obtaining vacuum glass by vacuuming at room temperature, comprising the following steps: S1. Join the two glass substrates together, align the outer notches of the two glass substrates, and invert the vacuum tube at the notch so that the sealed end of the vacuum tube is outside the glass substrate. The initial connection between the vacuum tube and the glass substrate is achieved through sealing. S2. Apply a sealing strip to the edge of the glass substrate and allow the sealing strip to cool and solidify to achieve the initial seal; S3. Start the cutting mechanism to cut the sealed end of the vacuum tube, and discharge the cut tail through a mechanical device; S4. Seal the inlet and outlet of the vacuum tube, and use an external vacuum pump and exhaust pipe to evacuate the space between the glass substrate. After evacuation, nitrogen is introduced through the connecting pipe to replace the residual air. S5. Start the plugging mechanism, insert the rubber plug into the vacuum tube for sealing using an electric push rod, and finally apply a secondary sealing strip to the reserved opening of the glass substrate to achieve overall sealing and complete the preparation of vacuum glass.

[0006] An apparatus for producing vacuum glass by vacuuming at room temperature, comprising: Glass substrates, used for assembly to form a vacuum glass body; A vacuum tube is placed in the notch on the outside of the glass substrate for vacuum extraction and subsequent sealing operations; The housing is disposed outside the glass substrate to assist in the vacuuming operation. A multi-axis robotic arm is installed at the bottom of the housing to drive the housing to adjust its position. First-stage sealing strips and second-stage sealing strips are used to seal the glass substrate twice. The cutting mechanism, installed inside the housing, is used to cut the sealing end of the vacuum tube; Plug mechanism: Installed inside the housing, used to seal the vacuum tube; A rubber stopper is located in the middle of the stopper cap mechanism to seal the vacuum tube. The turntable and motor are mounted on the outside of the housing to assist in driving the cutting mechanism and the plugging mechanism.

[0007] Preferably, the cutting mechanism includes a second motor, which is fixedly connected to the center of the turntable. A rotating plate is fixedly connected to the output end of the second motor. Multiple support frames are fixedly connected to the outer side of the rotating plate, and a cutting blade is installed on the inner side of the free end of the support frame.

[0008] Preferably, the plug mechanism includes an electric push rod and a bracket, both of which are fixedly connected to the outside of the turntable, and the rubber plug is snapped into the middle of the bracket.

[0009] Preferably, a plug guide rail is fixedly connected to the top of the housing, a positioning block is fixedly connected inside the plug guide rail, a feed port is opened on the top of the housing, and the inner cavity of the plug guide rail is aligned with the feed port.

[0010] Preferably, the bottom of the housing has a discharge port.

[0011] Preferably, a baffle plate one and a baffle plate two are fixedly connected to the outside of the turntable. The baffle plate one abuts against the top of the inner shell. After the turntable rotates, the baffle plate one blocks the feed port. The baffle plate two abuts against the bottom of the inner shell. After the turntable rotates, the baffle plate two blocks the discharge port.

[0012] Preferably, a sealing gasket is fixedly connected to the outside of the housing, the vacuum tube is located in the middle of the sealing gasket, and the outside of the sealing gasket abuts against the side wall of the glass substrate.

[0013] Preferably, a connecting pipe is fixedly connected to the outside of the housing, and an exhaust pipe is connected to the outside of the connecting pipe. A solenoid valve is installed in the middle of both the connecting pipe and the exhaust pipe. The connecting pipe is connected to external nitrogen, and the exhaust pipe is connected to an external vacuum pump.

[0014] Preferably, the plurality of support frames are arranged in an arc, and the size of the notch is larger than the outer size of the rubber plug.

[0015] This invention provides a method for producing vacuum glass at room temperature by vacuuming. It has the following beneficial effects: 1. This invention combines the steps of assembling the structure, sealing and cutting the vacuum tube, and evacuating and filling with nitrogen to achieve efficient evacuation and nitrogen filling of the internal space of the glass at room temperature. This avoids the dependence on high-temperature environment in traditional processes, improves preparation efficiency, reduces energy consumption, and ensures the stability of the vacuum environment inside the glass.

[0016] 2. This invention employs a combination of primary and secondary sealing methods, along with sealing the vacuum tube with a rubber stopper, effectively improving the overall sealing performance of the vacuum glass and reducing the risk of gas leakage. Simultaneously, the nitrogen-filling process effectively prevents internal oxidation or moisture residue, thereby significantly extending the service life of the vacuum glass and improving product quality and reliability. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the vacuum tube installation in this invention; Figure 3 This is a schematic diagram of the finished vacuum glass product in this invention; Figure 4 This is an exploded view of the shell portion of the present invention; Figure 5 This is a schematic diagram showing the installation positions of the plugging mechanism and the cutting mechanism in this invention; Figure 6 This is a schematic diagram of the cap-plug mechanism in this invention; Figure 7This is a schematic diagram of the cutting mechanism in this invention.

[0018] The components include: 1. Glass substrate; 2. Vacuum tube; 3. Primary sealing strip; 4. Pre-reserved opening; 5. Rubber plug; 6. Secondary sealing strip; 7. Multi-axis robotic arm; 8. Housing; 9. Motor 1; 10. Turntable; 11. Connecting pipe; 12. Exhaust pipe; 13. Solenoid valve; 14. Plug cap mechanism; 141. Electric push rod; 142. Bracket; 15. Cutting mechanism; 151. Motor 2; 152. Rotating plate; 153. Support frame; 154. Cutting blade; 16. Feed port; 17. Discharge port; 18. Plug cap guide rail; 19. Positioning block; 20. Sealing gasket; 21. Baffle 1; 22. Baffle 2. Detailed Implementation

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example: Please see the appendix Figure 1 -Appendix Figure 5 This invention provides an apparatus for producing vacuum glass by vacuuming at room temperature, comprising a glass substrate 1 for splicing and forming a vacuum glass body; Vacuum tube 2 is disposed in the notch on the outside of glass substrate 1 for vacuum extraction and subsequent sealing operations. Two glass substrates 1 are joined together so that the notches on the outside of the two glass substrates 1 are aligned. Then, vacuum tube 2 is inverted in the notch so that the sealing end of vacuum tube 2 is located outside the glass substrate 1 and sealed.

[0021] The housing 8 is located outside the glass substrate 1 to assist in the vacuuming operation. A multi-axis robotic arm 7 is installed at the bottom of the housing 8 to drive the housing 8 to adjust its position. The primary sealing strip 3 and the secondary sealing strip 6 perform two sealing treatments on the glass substrate 1 respectively. After the two glass substrates 1 are joined together, the primary sealing strip 3 is applied to the edge of the two glass substrates 1. After the primary sealing strip 3 cools and solidifies, the two glass substrates 1 are sealed.

[0022] Please see the appendix Figure 4 Appendix Figure 5 and attached Figure 7The cutting mechanism 15 is installed inside the housing 8 and is used to cut the sealed end of the vacuum tube 2. The cutting mechanism 15 includes a second motor 151, which is fixedly connected to the middle of the turntable 10. The output end of the second motor 151 is fixedly connected to a rotating plate 152. Multiple support frames 153 are fixedly connected to the outside of the rotating plate 152. Cutting blades 154 are installed on the inner side of the free end of the support frame 153, causing the cutting mechanism 15 to rotate to the outside of the vacuum tube 2. The position distribution of the support frames 153 causes the vacuum tube 2 to be engaged between the multiple cutting blades 154. When the vacuum tube 2 enters between the cutting blades 154, the support frames 153 deform and unfold outward, so that the cutting blades 154 fully fit the outer surface of the vacuum tube 2. Then, the second motor 151 drives the rotating plate 152 to rotate. At this time, the cutting blades 154 rotate along the outer circumference of the vacuum tube 2, thus realizing the cutting of the sealed end of the vacuum tube 2.

[0023] Please see the appendix Figure 4 -Appendix Figure 6 The capping mechanism 14 is installed inside the housing 8. The turntable 10 and motor 9 are installed outside the housing 8 to assist in driving the cutting mechanism 15 and the capping mechanism 14 to move. It is used to seal the vacuum tube 2. The rubber plug 5 is set in the middle of the capping mechanism 14 to seal the vacuum tube 2 in conjunction with the capping mechanism 14. The capping mechanism 14 includes an electric push rod 141 and a bracket 142. The electric push rod 141 and the bracket 142 are fixedly connected to the outside of the turntable 10. The rubber plug 5 is snapped into the middle of the bracket 142. The top of the housing 8 is fixedly connected to the capping guide rail 18. The inside of the capping guide rail 18 is fixedly connected to the positioning block 19. The top of the housing 8 has a feed port 16. The inner cavity of the capping guide rail 18 is aligned with the feed port 16. Multiple rubber plugs 5 are neatly arranged inside the plug cap guide rail 18, and then enter the housing 8 through the feed port 16 in sequence, and fall above the bracket 142. The rotation of the turntable 10 makes the rubber plugs 5 reach the position of the vacuum tube 2, and drives the electric push rod 141 to push the rubber plugs 5 into the middle of the vacuum tube 2 to complete the sealing of the vacuum tube 2. Then, after the secondary sealing strip 6 is coated on the outside of the glass substrate 1, the entire vacuum glass is produced.

[0024] Please see the appendix Figure 4 -Appendix Figure 5 The bottom of the housing 8 has a discharge port 17. Multiple support frames 153 are arranged in an arc, and the size of the notch is larger than the outer size of the rubber plug 5. The tail of the vacuum tube 2 cut by the cutting mechanism 15 is transported to the discharge port 17 by the turntable 10. The operation of the motor 151 causes the notch of the support frame 153 to align with the discharge port 17. At this time, the tail of the vacuum tube 2 falls out from the notch between the support frames 153. A connecting pipe 11 is fixedly connected to the outside of the housing 8. An exhaust pipe 12 is connected to the outside of the connecting pipe 11. A solenoid valve 13 is installed in the middle of both the connecting pipe 11 and the exhaust pipe 12. The connecting pipe 11 is connected to external nitrogen, and the exhaust pipe 12 is connected to an external vacuum pump.

[0025] Please see the appendix Figure 4 -Appendix Figure 5 A baffle plate 1 21 and a baffle plate 22 are fixedly connected to the outside of the turntable 10. The baffle plate 1 21 abuts against the top of the inner shell 8. After the turntable 10 rotates, the baffle plate 1 21 blocks the feed port 16, and the baffle plate 22 abuts against the bottom of the inner shell 8. After the turntable 10 rotates, the baffle plate 22 blocks the discharge port 17. During vacuuming and nitrogen injection operations, the baffle plate 1 21 and the baffle plate 22 block the feed port 16 and the discharge port 17 respectively to ensure that the inside of the turntable 10 is sealed, thereby ensuring the normal operation.

[0026] Please see the appendix Figure 5 A sealing gasket 20 is fixedly connected to the outside of the housing 8. The vacuum tube 2 is located in the middle of the sealing gasket 20, and the outside of the sealing gasket 20 abuts against the side wall of the glass substrate 1. During vacuuming and nitrogen injection, the sealing gasket 20 is used to improve the sealing of the connection between the housing 8 and the glass substrate 1, ensuring the normal operation of vacuuming and nitrogen injection.

[0027] Please see the appendix Figure 1 -Appendix Figure 7 A method for producing vacuum glass at room temperature by vacuuming includes the following steps: S1. Join the two glass substrates 1 together, align the outer notches of the two glass substrates 1, and invert the vacuum tube 2 at the notch so that the sealed end of the vacuum tube 2 is located outside the glass substrate 1. The initial connection between the vacuum tube 2 and the glass substrate 1 is achieved through sealing. S2. Apply a sealing strip 3 to the edge of the glass substrate 1 and wait for the sealing strip 3 to cool and solidify to achieve the initial seal; S3. Start the cutting mechanism 15 to cut the sealed end of the vacuum tube 2, and discharge the cut tail through a mechanical device; push the housing 8 to the outside of the vacuum tube 2 through the multi-axis robotic arm 7 so that the sealing gasket 20 abuts against the side wall of the glass substrate 1. At this time, the vacuum tube 2 passes through the middle of the sealing gasket 20. Then, drive the turntable 10 to rotate through the drive motor 9, causing the cutting mechanism 15 to rotate to the outside of the vacuum tube 2. The position distribution of the support frame 153 causes the vacuum tube 2 to be clamped between multiple cutting blades 154. When the vacuum tube 2 enters between the cutting blades 154, the support frame 153 deforms and unfolds outward, so that the cutting blades 154 fully fit the outer surface of the vacuum tube 2. Then, drive the rotating plate 152 to rotate through the motor 151. At this time, the cutting blades 154 rotate along the outer periphery of the vacuum tube 2, thus realizing the cutting of the sealed end of the vacuum tube 2. Then, the drive motor 9 drives the turntable 10 to rotate, thus bringing the tail of the cut vacuum tube 2 to the outlet 17. By rotating the support frame 153, the tail of the vacuum tube 2 falls out of the outlet 17.

[0028] S4. Seal the inlet 16 and outlet 17 of vacuum tube 2. Vacuum the space between glass substrate 1 using an external vacuum pump and exhaust pipe 12. After vacuuming, fill with nitrogen through connecting pipe 11 to replace the residual air. After the tail of vacuum tube 2 is cut, drive motor 9 to rotate turntable 10, so that baffle 21 blocks inlet 16 and baffle 22 blocks outlet 17. At this time, vacuuming is performed by an external vacuum pump connected to exhaust pipe 12. After the process is completed, the exhaust pipe 12 is closed by solenoid valve 13 and the connecting pipe 11 is opened. At this time, the external nitrogen connected to connecting pipe 11 enters the glass substrate 1 due to the pressure, thus realizing the nitrogen filling operation.

[0029] S5. Activate the capping mechanism 14, insert the rubber stopper 5 into the vacuum tube 2 via the electric push rod 141 for sealing, and finally apply a secondary sealing strip 6 to the reserved opening 4 of the glass substrate 1 to achieve overall sealing, thus completing the preparation of the vacuum glass. After nitrogen filling is completed, rotate the turntable 10 again to align the capping mechanism 14 with the vacuum tube 2, and then drive the electric push rod 141 to push the rubber stopper 5 into the middle of the vacuum tube 2 to complete the sealing of the vacuum tube 2. Finally, perform a secondary sealing treatment on the glass substrate 1, filling the reserved opening 4 with a secondary sealing strip 6 to achieve sealing, thus completing the entire vacuum glass production.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method of producing vacuum glass at room temperature by vacuumizing, characterized by, It comprises the following steps: S1. Two glass substrates (1) are spliced, the outer side notches of the two glass substrates (1) are aligned, and the vacuum tube (2) is inverted at the notches, so that the sealing end of the vacuum tube (2) is located outside the glass substrate (1), and the preliminary connection of the vacuum tube (2) and the glass substrate (1) is realized through sealing treatment; S2. A first sealant strip (3) is applied along the edge of the glass substrate (1), and the first sealant strip (3) is cooled and solidified to achieve primary sealing; S3. Start the cutting mechanism (15) to cut the sealing end of the vacuum tube (2), and discharge the cut tail through a mechanical device; S4. Block the feed port (16) and the discharge port (17) of the vacuum tube (2), and perform vacuumizing treatment on the space between the glass substrate (1) and the exhaust pipe (12) through an external vacuum pump, and then fill nitrogen through the connecting pipe (11) to replace the residual air after the vacuumizing is completed; S5. Start the plug cap mechanism (14), insert the rubber plug (5) into the vacuum tube (2) through the electric push rod (141) for plugging, and finally apply a second sealant strip (6) at the reserved port (4) of the glass substrate (1) to achieve overall sealing, and complete the preparation of the vacuum glass.

2. An apparatus for producing vacuum glass by evacuating at room temperature, characterized by The method for preparing a vacuum glass by vacuumizing at room temperature according to claim 1 comprises: a glass substrate (1) for splicing and forming a vacuum glass body; a vacuum tube (2) arranged in the notch outside the glass substrate (1) for vacuum extraction and subsequent plugging operation; a housing (8) arranged outside the glass substrate (1) to assist in vacuumizing operation, wherein a multi-axis mechanical arm (7) is installed at the bottom of the housing (8) to drive the housing (8) to adjust the position; a first sealant strip (3) and a second sealant strip (6) for twice sealing treatment of the glass substrate (1); a cutting mechanism (15) installed inside the housing (8) for cutting the sealing end of the vacuum tube (2); a plug cap mechanism (14) installed inside the housing (8) for plugging the vacuum tube (2); a rubber plug (5) arranged in the middle of the plug cap mechanism (14) to cooperate with the plug cap mechanism (14) for plugging the vacuum tube (2); a turntable (10) and a motor (9) installed outside the housing (8) to assist in driving the cutting mechanism (15) and the plug cap mechanism (14) to move.

3. The device for vacuum glass production at room temperature according to claim 2, characterized in that, The cutting mechanism (15) comprises a motor (151) fixedly connected to the middle of the turntable (10), an output end of the motor (151) fixedly connected with a rotating plate (152), and a plurality of support frames (153) fixedly connected to the outer side of the rotating plate (152), and a cutting blade (154) installed on the inner side of the free end of the support frame (153).

4. The device for vacuum glass production at room temperature according to claim 2, characterized in that, The plug cap mechanism (14) comprises an electric push rod (141) and a bracket (142), both of which are fixedly connected to the outer side of the turntable (10), and the rubber plug (5) is connected to the middle of the bracket (142).

5. The device for vacuum glass production at room temperature according to claim 2, characterized in that, The shell (8) top fixedly connected with the cap guide rail (18), the cap guide rail (18) inside fixedly connected with the positioning block (19), the shell (8) top is equipped with feed inlet (16), the cap guide rail (18) inner chamber is aligned with the feed inlet (16).

6. The device for vacuum glass production at room temperature according to claim 5, characterized in that, The shell (8) bottom is equipped with discharge port (17).

7. The device for vacuum glass production at room temperature according to claim 6, characterized in that, The outer side of the rotating disc (10) is fixedly connected with the baffle one (21) and the baffle two (22), the baffle one (21) and the inner top of the shell (8) abut, after rotating disc (10) rotates, the baffle one (21) blocks the feed inlet (16), the baffle two (22) abuts on the inner bottom of the shell (8), after rotating disc (10) rotates, the baffle two (22) blocks the discharge port (17).

8. The device for vacuum glass production at room temperature according to claim 2, characterized in that, The outer side of the shell (8) is fixedly connected with the sealing gasket (20), the vacuum pipe (2) is located in the middle of the sealing gasket (20), and the outer side of the sealing gasket (20) abuts on the side wall of the glass substrate (1).

9. The device for vacuum glass production at room temperature according to claim 2, characterized in that, The outer side of the shell (8) is fixedly connected with the connecting pipe (11), the outer side of the connecting pipe (11) is communicated with the exhaust pipe (12), the middle of the connecting pipe (11) and the exhaust pipe (12) is installed with the electromagnetic valve (13), the connecting pipe (11) is connected with external nitrogen, and the exhaust pipe (12) is connected with external vacuum pump.

10. The device for vacuum glass production at room temperature according to claim 3, characterized in that, Multiple support frames (153) are arranged in a circular arc, and the size of the notch is greater than the outer size of the rubber plug (5).

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