Vacuum glass vacuuming nozzle device

Abstract

This utility model discloses a vacuum glass vacuuming and port-extraction device, belonging to the field of vacuum glass processing technology. It solves problems such as low efficiency, large manual operation errors, inaccurate manual fitting, and uneven heating in existing technologies. The utility model includes a vacuuming body and a vacuuming pipeline, with the pipeline connected to the vacuuming body. A port is located at the end of the vacuuming body. A heating component and a lifting component are connected to the vacuuming body. The lifting component is connected to the heating component, which includes a heating head positioned near the port. The lifting component includes a lifting part and a driving part, with the driving part driving the lifting part to change the position of the port. This utility model automates the vacuum glass vacuuming and sealing process, achieving efficient docking and rapid resetting of the heating head and vacuum glass through the lifting component, thus realizing efficient and automated production of the vacuum glass vacuuming process and improving product quality.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum glass processing technology, and more specifically, it relates to a vacuum glass vacuum extraction device. Background Technology

[0002] Vacuum glass's vacuum layer can effectively block heat conduction between indoors and outdoors, providing excellent thermal insulation and reducing noise transmission. Due to its superior performance, vacuum glass is widely used.

[0003] Currently, the production process of vacuum glass requires steps such as vacuuming and edge sealing. However, the continuity between these steps is poor, and the air extraction ports are mostly placed manually, resulting in low automation. This not only leads to low work efficiency and affects the processing efficiency of vacuum glass, but also the yield rate. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing a vacuum glass vacuum extraction port device.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A vacuum glass vacuum extraction device includes an extraction body and an extraction pipeline. The extraction pipeline is connected to the extraction body. An extraction port is provided at the end of the extraction body. A heating component and a lifting component are connected to the extraction body. The lifting component is connected to the heating component. The heating component includes a heating head, which is located near the extraction port. The lifting component includes a lifting part and a driving part. The driving part drives the lifting part to move, thereby causing the position of the extraction port to change.

[0006] Preferably, the air extraction body includes an extraction port housing, with the extraction port located at the first end of the extraction port housing, and a base plate assembly connected to the second end of the extraction port housing. The extraction port housing is provided with an air extraction chamber for gas flow, and the air extraction pipeline is connected to the air extraction chamber. The heating assembly and the lifting assembly are both located in the air extraction chamber, and the lifting assembly drives the heating assembly to move within the air extraction chamber.

[0007] Preferably, the air extraction chamber includes a first chamber and a second chamber, which are arranged vertically along the axial direction of the air extraction body; the air extraction pipeline includes a first air extraction passage and a second air extraction passage, which are connected to the first chamber and the second air extraction passage are connected to the second chamber.

[0008] Preferably, the air extraction port is connected to the first cavity, the base plate assembly is connected to the second cavity, the heating head is disposed in the first cavity, the lifting assembly is disposed in the second cavity, and the lifting assembly is connected to the heating head, driving the heating head to move along the axial direction of the air extraction body.

[0009] Preferably, a telescopic bellows is provided between the second air extraction passage and the second cavity, the first end of the drive unit is connected to the telescopic bellows, and the second end of the drive unit is connected to the lifting unit.

[0010] Preferably, the lifting part includes a lifting bracket, and the driving part includes a driving rod. The lifting bracket is arranged along the axial direction of the air extraction body, and the driving rod is arranged along the radial direction of the air extraction body. The first end of the driving rod is connected to the telescopic bellows, the second end of the driving rod is connected to the lifting bracket, and the end of the lifting bracket is linked to the heating head. The driving rod and the telescopic bellows move synchronously, thereby driving the lifting bracket to perform axial lifting and lowering movements.

[0011] Preferably, the lifting bracket includes a support unit and a telescopic unit. The support unit is connected to the telescopic unit and the support unit is connected to the heating head. The telescopic unit is connected to the drive rod, and the drive rod drives the telescopic unit to perform axial telescopic movements.

[0012] Preferably, the support unit includes a first support plate and a second support plate. The first support plate is connected to the drive rod, the second support plate is connected to the heating head, and the telescopic unit is disposed between the first support plate and the second support plate. The telescopic unit includes a first telescopic arm and a second telescopic arm that are hinged together. The first telescopic arm and the second telescopic arm can rotate relative to each other around the intersection point to achieve changes in the intersection angle.

[0013] Preferably, the telescopic unit is connected to a positioning part, and the positioning part is provided with a positioning groove arranged along the axial direction of the air extraction body. The hinge points of the first telescopic arm and the second telescopic arm are set in the positioning groove.

[0014] Preferably, a sealing device is provided inside the internal cavity of the air extraction body.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes the lifting mechanism of a vacuum negative pressure moving lifting assembly to allow the heating head of the heating assembly to adhere to the vacuum glass, heating the glass powder and achieving the purpose of sealing the vacuum glass. Furthermore, this embodiment connects to the vacuum pumping body via a suction pipe. Through the suction port at the end of the suction body, air can be evacuated from the inside of the vacuum glass to create a vacuum environment. The heating head is positioned close to the suction port to heat and melt the sealing material, facilitating direct application to the sealing location. This invention automates the vacuum glass evacuation and sealing process, achieving efficient docking and rapid repositioning of the heating head and vacuum glass through the lifting assembly. This enables highly efficient and automated production of the vacuum glass evacuation process, precise placement of the suction port, and accurate alignment of the heating head with the sealing position of the vacuum glass, improving product quality and solving problems such as low efficiency, large human error, inaccurate manual application, and uneven heating that may exist in traditional processes. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present utility model; Figure 2 This utility model Figure 1 Cross-sectional view along the AA direction; Figure 3 This is an axonometric sectional view of one embodiment of the present invention; Figure 4 This is a schematic diagram of the main structure of an embodiment of the lifting bracket of this utility model; Figure 5 This is a three-dimensional structural diagram of an embodiment of the lifting bracket of this utility model; Figure 6 This is a schematic diagram of one embodiment of the lifting part of this utility model.

[0018] Explanation of symbols in the diagram: 1. Suction body; 11. Suction port housing; 12. Suction chamber; 121. First chamber; 122. Second chamber; 2. Suction pipeline; 21. First suction passage; 22. Second suction passage; 3. Suction port; 4. Heating head; 5. Lifting part; 51. Lifting bracket; 511. First support plate; 512. Second support plate; 513. First telescopic arm; 514. Second telescopic arm; 515. Connecting plate; 516. First movable plate; 517. Second movable plate; 518. Moving pin; 519. Positioning plate; 5191. Positioning groove; 6. Drive part; 61. Drive rod; 7. Base plate assembly; 8. Telescopic bellows; 91. O-ring seal; 92. Sealing gasket. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] Please see Figure 1 , Figure 2This utility model provides a vacuum glass vacuum extraction device, including a vacuum body 1 and a vacuum pipe 2. The vacuum pipe 2 is connected to the vacuum body 1. The vacuum body 1 has an extraction port 3 at its end. A heating component and a lifting component are connected to the vacuum body 1. The lifting component is connected to the heating component. The heating component includes a heating head 4, which is located near the extraction port 3. The lifting component includes a lifting part 5 and a driving part 6. The driving part 6 drives the lifting part 5 to move, thereby causing the position of the extraction port 3 to change.

[0021] This embodiment of the invention utilizes the lifting part 5 of the vacuum negative pressure moving lifting component to allow the heating head 4 of the heating component to adhere to the vacuum glass, heating the glass powder to achieve the purpose of sealing the vacuum glass. Furthermore, this embodiment connects to the vacuum body 1 via the suction pipe 2, and through the suction port 3 at the end of the suction body 1, air can be evacuated from the inside of the vacuum glass to create a vacuum environment. The heating head 4 is positioned close to the suction port 3 to heat and melt the sealing material, facilitating direct application to the sealing position. This invention automates the vacuum glass evacuation and sealing process, achieving efficient docking and rapid repositioning of the heating head and vacuum glass through the lifting component. This enables highly efficient and automated production of the vacuum glass evacuation process, precise placement of the suction port, and accurate contact between the heating head and the sealing position of the vacuum glass, improving product quality and solving problems such as low efficiency, large human error, inaccurate manual application, and uneven heating that may exist in traditional processes.

[0022] In this embodiment, the air extraction body 1 includes an extraction port housing 11, an extraction port 3 is disposed at the first end of the extraction port housing 11, a base plate assembly 7 is connected to the second end of the extraction port housing 11, an air extraction chamber 12 for gas flow is provided inside the extraction port housing 11, an extraction pipeline 2 is connected to the air extraction chamber 12, a heating assembly and a lifting assembly are both disposed inside the air extraction chamber 12, and the lifting assembly can drive the heating assembly to move inside the air extraction chamber 12.

[0023] Specifically, such as Figure 1 As shown in Figure 2, the suction port housing 11 has a cylindrical structure. The suction port 3 and the base plate assembly 7 are respectively arranged at the upper and lower ends of the suction port housing 11. The base plate assembly 7 is fixedly connected to the lower end of the suction port housing 11 by fastening bolts. The suction chamber 12 is arranged in the internal space formed by the suction port housing 11, the suction port 3, and the base plate assembly 7. Under the condition of air pressure change in the suction chamber 12, the lifting part drives the heating head 4 to contact or move away from the external vacuum glass through negative pressure.

[0024] like Figure 3As shown, the air extraction chamber 12 includes a first chamber 121 and a second chamber 122. The first chamber 121 and the second chamber 121 are arranged vertically along the axial direction of the air extraction body 1. The air extraction pipeline connected to the air extraction chamber 12 includes a first air extraction passage 21 and a second air extraction passage 11, wherein the first air extraction passage 21 is connected to the first chamber 121 and the second air extraction passage 22 is connected to the second chamber 122.

[0025] Specifically, the air extraction port 3 is connected to the first cavity 121, the base plate assembly 7 is connected to the second cavity 122, the heating head 4 is disposed in the first cavity 121, the lifting assembly is disposed in the second cavity 122, and the lifting assembly is connected to the heating head 4. Under the driving action of the lifting assembly, the lifting part 5 can drive the heating head 4 to move axially along the axial direction of the air extraction cavity 12.

[0026] Furthermore, in a preferred embodiment of this utility model, the ends of the first air extraction passage 21 and the second air extraction passage 22 can both be connected to a gas power source or the atmosphere. Depending on the usage requirements, the air extraction chamber 12 can be vented or evacuated to change the air pressure state inside the air extraction chamber 12 and achieve switching between positive and negative pressure. The gas power source can be a pump or a fan, which can be switched according to the usage requirements of the scenario.

[0027] In this embodiment, the first extraction passage 21 and the second extraction passage 22 are two parallel pipes and are set independently of each other. They can realize regional extraction or independent extraction and supply operations. The gas pressure change in the extraction chamber can be changed according to the needs, thereby changing the contact or separation state between the heating head 4 and the vacuum glass.

[0028] Furthermore, in this embodiment, a telescopic bellows 8 is provided between the second air extraction passage 22 and the second cavity 122, the first end of the drive unit 6 is connected to the telescopic bellows 8, and the second end of the drive unit 6 is connected to the lifting unit 5.

[0029] Specifically, such as Figure 3 As shown, the telescopic bellows 8 connects the second air extraction passage 22 and the second cavity 122. One end of the telescopic bellows 8 is connected to the second air extraction passage 22, and the other end of the telescopic bellows 8 is connected to the second cavity 122. Thus, by changing the air pressure in the second air extraction passage 22, and by changing the positive and negative pressure states, the telescopic bellows 8 can be extended or retracted, thereby driving the drive unit 6 and the lifting unit 5 to move.

[0030] In this embodiment, as Figure 4 , Figure 5As shown, the lifting unit 5 includes a lifting bracket 51, and the driving unit 6 includes a driving rod 61. The lifting bracket 51 is arranged along the axial direction of the suction body 1, and the driving rod 61 is arranged along the radial direction of the suction body 1. The first end of the driving rod 61 is connected to the telescopic bellows 8, and the second end of the driving rod 61 is connected to the lifting bracket 51. The first end of the lifting bracket 51 is connected to the end of the driving rod 61, and the second end of the lifting bracket 51 is connected to the heating head 4, so as to realize the linkage between the lifting bracket 51 and the heating head 4. The driving rod 61 and the telescopic bellows 8 move synchronously, thereby driving the lifting bracket 51 to perform axial lifting and lowering movements.

[0031] Specifically, the lifting bracket 515 includes a support unit and a telescopic unit. The support unit is connected to the telescopic unit and the support unit is connected to the heating head 4. The telescopic unit is connected to the drive rod 61, and the drive rod 61 drives the telescopic unit to perform axial telescopic movements.

[0032] In this embodiment, the support unit includes a first support plate 511 and a second support plate 512. The first support plate 511 is connected close to the drive rod 61 and is disposed at the lower part. The second support plate 512 is fixedly connected to the heating head 4 and is disposed at the upper part. The first support plate 511 and the second support plate 512 are arranged parallel to each other. The telescopic unit is disposed between the first support plate 511 and the second support plate 512.

[0033] The telescopic unit includes a first telescopic arm 513 and a second telescopic arm 514 that are hinged to each other. The first telescopic arm 513 and the second telescopic arm 514 can rotate relative to each other around the intersection point to realize the change of the intersection angle, thereby realizing the change of the axial telescopic distance, and driving the heating head 4 to realize the change of axial position.

[0034] Specifically, the telescopic unit is a scissor telescopic structure. The first telescopic arm 513 and the second telescopic arm 514 are cross-hinged in an X-shape or scissor shape. The intersection point is the rotation center. When the two telescopic arms rotate around the intersection point, the "opening degree" of the entire unit will be changed, thereby realizing the contraction or extension of the telescopic unit, increasing or shortening the overall height of the telescopic unit. Through simple rotational movement, stable linear telescopic movement is achieved, and the unit is stable and has strong support after being unfolded.

[0035] The end of the drive rod 61 is fixedly connected to the lower end of the first telescopic arm 513 via an L-shaped plate. When the drive rod 61 moves horizontally and radially, it will drive the first telescopic arm 513 to rotate, thereby realizing the relative contraction or expansion of the first telescopic arm 513 and the second telescopic arm 514.

[0036] Furthermore, a hinge shaft and a hinge fixing device are provided at the intersection of the first telescopic arm 513 and the second telescopic arm 514. The hinge shaft is the rotating shaft of the telescopic unit, and the hinge fixing device is provided with a connecting pin and a nut. The hinge shaft is sleeved on the outer circumference of the connecting pin, which allows the telescopic units to rotate relative to each other within a limited range, avoids arbitrary deviation, and ensures operating accuracy.

[0037] Furthermore, both ends of the first telescopic arm 513 and the second telescopic arm 514 are movably connected to the support unit and can move horizontally in the horizontal direction, allowing for flexible movement. The upper ends of the first telescopic arm 513 and the second telescopic arm 514 are connected to the second support plate 512 via a connecting plate 515. The connecting plate 515 is vertically arranged and perpendicular to the second support plate 512. The connecting plate 515 and the second support plate 512 can be connected by a detachable plug-in connection, which is not only easy to install but also convenient for daily disassembly and maintenance.

[0038] In this embodiment, the connecting plate 515 is provided with two movable slots arranged symmetrically on the left and right. The movable slots are through elongated holes arranged along the length of the connecting plate 515. The upper ends of the first telescopic arm 513 and the second telescopic arm 514 are movably connected to the movable slots of the connecting plate 515 by connecting pins. The connecting pins of the first telescopic arm 513 and the second telescopic arm 514 are respectively connected to the movable pin 518 by the first movable plate 516 and the second movable plate 517. The movable pin 518 is located between the connecting pins on both sides and in the middle of the upper end of the first telescopic arm 513 and the second telescopic arm 514. When the first telescopic arm 513 and the second telescopic arm 514 retract or expand, the movable pin 518 can change its axial position.

[0039] Furthermore, in a preferred embodiment of this utility model, the telescopic unit is connected to a positioning part, and the positioning part is provided with a positioning groove arranged along the axial direction of the air extraction body 1. The hinge points of the first telescopic arm 513 and the second telescopic arm 514 are arranged in the positioning groove.

[0040] Specifically, the positioning part is a positioning plate 519 disposed between the first support piece 511 and the second support piece 512. The positioning groove 5191 is a through groove structure disposed on the positioning plate 519. The positioning plate 519 is vertically disposed and perpendicular to the first support piece 511 and the second support piece 512. The lower end of the positioning plate 519 is fixedly connected to the first support piece 511. The positioning groove 5191 is a semi-open groove structure. The connection intersection point and connecting pin of the first telescopic arm 513 and the second telescopic arm 514 are disposed at the lower part of the positioning groove 5191, and the moving pin 518 is disposed at the upper part of the positioning groove 5191. When the air pressure inside the vacuum chamber 12 changes and the first telescopic arm 513 and the second telescopic arm 514 rotate relative to each other, the connecting pin and the moving pin 518 in the positioning groove 5191 also move relative to each other, cooperating to achieve stable movement of the telescopic unit, thereby enabling the heating head 4 to contact or detach from the vacuum glass, and realizing vacuuming or sealing operations.

[0041] In this embodiment, the lower end of the support unit is fixedly connected to the pull-out housing 11 by fixing bolts, and its upper end can move axially stably, giving the component a stable fulcrum. The first support plate 511 and the second support plate 512 are single plate structures or support frame structures formed by multiple structures.

[0042] Furthermore, such as Figure 6 As shown in the preferred embodiment of this utility model, two telescopic units can be provided in the air extraction chamber 12. The two telescopic units are arranged in cooperation between the first support plate 511 and the second support plate 512 of the support unit. The two sets of telescopic units are arranged in parallel to each other. The end of the drive rod 61 is arranged between the two telescopic units, and the end of the drive rod 61 is connected to the ends of the first telescopic arms 513 on its left and right sides through a U-shaped plate, so that the telescopic arms can be driven to open and close by the drive rod 61.

[0043] Furthermore, a sealing device is installed inside the internal cavity of the vacuum body 1 to ensure the airtightness of the vacuum chamber, maintain stable pressure, and prevent air leakage.

[0044] Specifically, such as Figure 3 As shown, the sealing device inside the air extraction chamber 12 includes an O-ring 91 set at the upper end of the extraction port housing 11 and a gasket 92 set at the connection end of the base plate assembly 7 and the end of the telescopic bellows 8. The sealing components used between the components can be suitable sealing rings, gaskets or other sealing structures. The specific configuration and quantity can be adapted and adjusted according to actual usage requirements.

[0045] Furthermore, in a preferred embodiment of this invention, the heating head 4 can be replaced according to actual usage needs, making it more adaptable to different specifications of vacuum glass production, thus improving the versatility and operational flexibility of the device. The heating head 4 can quickly and accurately heat and seal the extraction port after vacuuming, avoiding incomplete sealing caused by heating position misalignment, ensuring the sealing performance of the vacuum glass interlayer, and improving product qualification rate and service life.

[0046] This embodiment integrates vacuuming, sealing, and position adjustment into one unit, eliminating the need for separate position adjustment or sealing heating equipment. During production, there is no need to frequently switch equipment or transfer workpieces. The entire process of "docking-vacuuming-sealing-resetting" can be completed on the same device, reducing process connection time and improving the production efficiency of the vacuuming process for vacuum glass.

[0047] The working principle of this utility model is as follows: Under normal conditions, the heating head 4 is lower than the upper surface of the extraction port housing 11. When a vacuum is drawn through the first extraction passage 21, the internal cavity of the extraction port housing 11 is in a vacuum state. The second extraction passage 22 is connected to the atmosphere. The heating head 4 heats the sealing plate placed at its end. After the glass powder on the sealing plate melts, the internal cavity is in a vacuum negative pressure state through the second extraction passage 22 and the telescopic bellows 8. At this time, the telescopic bellows 8 is in a contracted state. The drive rod 61 pulls the telescopic unit to contract, causing the heating head 4 on the lifting bracket 51 to rise, and causing the heating head 4 and the sealing plate to press against the glass for sealing. After sealing, the lifting assembly is reset. Gas is introduced into the second extraction passage 22 through the second extraction passage 22 and the telescopic bellows 8. Under atmospheric pressure, the negative pressure state of the telescopic bellows 8 is released, and it returns to normal state. The drive rod 61 pushes the telescopic unit to extend, realizing the descent of the lifting bracket 51, so that the heating head 4 is separated from the glass in contact, completing the vacuuming and sealing operation.

[0048] This invention provides a vacuum glass vacuuming and sealing device. Through the lifting part 5 of the vacuum negative pressure moving lifting assembly, the heating head 4 of the heating assembly can be placed against the vacuum glass to heat the glass powder, achieving the purpose of sealing the vacuum glass. Furthermore, this embodiment connects to the vacuuming body 1 via the suction pipe 2. Through the suction port at the end of the vacuuming body 1, air can be evacuated from the inside of the vacuum glass to create a vacuum environment. The heating head 4 is positioned close to the suction port to heat and melt the sealing material, facilitating direct application to the sealing position. This invention automates the vacuum glass vacuuming and sealing process, achieving efficient docking and rapid repositioning of the heating head and vacuum glass through the lifting assembly. This enables highly efficient and automated production of the vacuum glass vacuuming process, precise placement of the suction port, and accurate contact between the heating head and the sealing position of the vacuum glass, improving product quality and solving problems such as low efficiency, large human error, inaccurate manual placement, and uneven heating that may exist in traditional processes.

[0049] In the description of this utility model, it should be understood that terms such as “length”, “width”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, and “outer” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0051] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vacuum glass vacuum extraction device, comprising an extraction body and an extraction pipeline, wherein the extraction pipeline is connected to the extraction body, characterized in that, The end of the air extraction body is provided with an air extraction port. A heating component and a lifting component are connected to the air extraction body. The lifting component is connected to the heating component. The heating component includes a heating head, which is located near the air extraction port. The lifting component includes a lifting part and a driving part. The driving part drives the lifting part to move, thereby causing the position of the air extraction port to change.

2. The vacuum glass vacuum extraction device according to claim 1, characterized in that, The air extraction body includes an extraction port housing, the air extraction port is located at the first end of the extraction port housing, the second end of the extraction port housing is connected to a base plate assembly, the extraction port housing is provided with an air extraction chamber for gas flow, the air extraction pipeline is connected to the air extraction chamber, the heating assembly and the lifting assembly are both located in the air extraction chamber, and the lifting assembly drives the heating assembly to move in the air extraction chamber.

3. The vacuum glass vacuum extraction device according to claim 2, characterized in that, The air extraction chamber includes a first chamber and a second chamber, which are arranged vertically along the axial direction of the air extraction body; the air extraction pipeline includes a first air extraction passage and a second air extraction passage, which are connected to the first chamber and the second air extraction passage is connected to the second chamber.

4. The vacuum glass vacuum extraction device according to claim 3, characterized in that, The air extraction port is connected to the first cavity, the base plate assembly is connected to the second cavity, and the heating head is disposed in the first cavity. The lifting assembly is disposed in the second cavity and is connected to the heating head, driving the heating head to move along the axial direction of the air extraction body.

5. A vacuum glass vacuum extraction device according to claim 3, characterized in that, A telescopic bellows is provided between the second air extraction passage and the second cavity. The first end of the drive unit is connected to the telescopic bellows, and the second end of the drive unit is connected to the lifting unit.

6. The vacuum glass vacuum extraction device according to claim 5, characterized in that, The lifting unit includes a lifting bracket, and the driving unit includes a driving rod. The lifting bracket is arranged along the axial direction of the air extraction body, and the driving rod is arranged along the radial direction of the air extraction body. The first end of the driving rod is connected to the telescopic bellows, and the second end of the driving rod is connected to the lifting bracket. The end of the lifting bracket is linked to the heating head. The driving rod and the telescopic bellows move synchronously, thereby driving the lifting bracket to perform axial lifting and lowering movements.

7. A vacuum glass vacuum extraction device according to claim 6, characterized in that, The lifting bracket includes a support unit and a telescopic unit. The support unit is connected to the telescopic unit and the support unit is connected to the heating head. The telescopic unit is connected to the drive rod, and the drive rod drives the telescopic unit to perform axial telescopic movements.

8. A vacuum glass vacuum extraction device according to claim 7, characterized in that, The support unit includes a first support plate and a second support plate. The first support plate is connected to the drive rod, and the second support plate is connected to the heating head. The telescopic unit is disposed between the first support plate and the second support plate. The telescopic unit includes a first telescopic arm and a second telescopic arm that are hinged to each other. The first telescopic arm and the second telescopic arm can rotate relative to each other around the intersection point to achieve changes in the intersection angle.

9. A vacuum glass vacuum extraction port device according to claim 8, characterized in that, The telescopic unit is connected to a positioning part, which has a positioning groove arranged along the axial direction of the air extraction body. The hinge points of the first telescopic arm and the second telescopic arm are located in the positioning groove.

10. A vacuum glass vacuum extraction device according to claim 1, characterized in that, A sealing device is installed inside the internal cavity of the air extraction body.

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