CN219079341U

CN219079341U - Hot bending forming equipment for 3D vehicle-mounted glass display cover plate

Info

Publication number: CN219079341U
Application number: CN202320036641.7U
Authority: CN
Inventors: 施清潭
Original assignee: Dongguan Yingjie Painting Equipment Co ltd
Current assignee: Dongguan Yingjie Painting Equipment Co ltd
Priority date: 2023-01-07
Filing date: 2023-01-07
Publication date: 2023-05-26
Anticipated expiration: 2033-01-07

Abstract

The utility model relates to a 3D vehicle-mounted glass display cover plate hot bending forming device, which comprises: a furnace body; the lower heating plate is used for bearing the glass template; the upper infrared heating lamp box is controlled by a driving device arranged outside the furnace body to move up and down relative to the lower heating plate, the heating position of the upper infrared heating lamp box is controllable, and the heating power is adjustable; the vacuum pump device is communicated with a vacuum pipeline penetrating through the lower heating plate so as to form a deformation adsorption cavity at a deformation position between the bottom surface of the 2D glass and the glass template; the nitrogen spraying assembly is arranged around the glass template and sprays nitrogen to form a nitrogen curtain, and an isolation cavity is formed between the nitrogen curtain around the glass template and the upper infrared heating lamp box as well as between the nitrogen curtain around the glass template and the lower heating plate; the isolation chamber is formed by adopting the continuous nitrogen curtain, so that the entry of oxygen is effectively reduced, and the scrappage of the bad graphite glass template caused by oxidation is reduced.

Description

Hot bending forming equipment for 3D vehicle-mounted glass display cover plate

Technical Field

The utility model relates to the technical field of processing of 3D vehicle-mounted glass display cover plates, in particular to a thermal bending forming device for a 3D vehicle-mounted glass display cover plate.

Background

In the prior art, publication number CN113896408A is a Chinese patent application, it provides a 3D glass hot bending former that is applied to 3D glass processing technology field, this prior art still relates to a 3D glass hot bending forming method, frame (1) lower part of 3D glass hot bending former set up lower plate (3), frame (1) upper portion sets up heating element elevating part (4), set up die (6) on every lower hot plate (5) on lower plate (3) respectively, heating element elevating part (4) lower part sets up heating element (7), lamp stand (8) lower part sets up lamp shade backplate (9), lamp stand (8) lower surface sets up infrared lamp tube (10), every die (6) communicate vacuum pipeline adsorption part (12) through a vacuum tube (11) respectively. According to the glass hot bending forming equipment and the forming method in the prior art, the cavity has heat preservation and sealing functions, the required hot bending temperature and clean environment in the cavity are guaranteed, and the glass hot bending forming equipment and the forming method are beneficial to reducing cost, reducing energy consumption, improving hot bending efficiency and improving product yield.

The prior art mainly has the following defects: the lamp shade guard plate and the lamp plate ascend and descend together in the continuous feeding and discharging process, so that oxygen can easily enter the heating cavity, and glass can be easily oxidized to cause poor oxidization of products. The lamp holder is easy to damage the infrared lamp tube due to overhigh temperature in the continuous heating process. The cooling of the female die and the heated glass is realized by adopting a scheme of stopping heating and naturally cooling, the cooling speed is low, the effect is poor, and the quality after hot bending forming is difficult to ensure. Oxygen is easily introduced into the hot-bending chamber during opening and closing of the opening and closing door. After the vacuum pipeline adsorption part adsorbs and discharges the high-temperature gas in the hot bending cavity, the high-temperature gas can influence the environment outside the hot bending cavity or has potential safety hazards.

Disclosure of Invention

The utility model aims to solve at least one of the defects in the prior art, and provides a 3D vehicle-mounted glass display cover plate hot bending forming device which adopts a continuous nitrogen curtain to form an isolation cavity, so that the entry of oxygen is effectively reduced, and the defects caused by oxidation are reduced.

The embodiment of the utility model provides a thermal bending forming device for a 3D vehicle-mounted glass display cover plate, which comprises the following components: a furnace body having an openable and closable furnace door; the lower heating plate is arranged in the furnace body and used for bearing a glass template, wherein the glass template is used for positioning a 2D glass panel to be heated and bent; the upper infrared heating lamp box is arranged in the furnace body, is controlled by a driving device arranged outside the furnace body and moves up and down relative to the lower heating plate, the heating position of the upper infrared heating lamp box is controllable, the heating power is adjustable, and the upper infrared heating lamp box is provided with a first cooling device; the vacuum pump device is arranged outside the furnace body and is communicated with a vacuum pipeline penetrating through the lower heating plate so as to form a deformation adsorption cavity at a deformation position between the bottom surface of the 2D glass panel and the glass template; and the nitrogen spraying assembly is arranged in the furnace body and communicated with a nitrogen source outside the furnace body, the nitrogen spraying assembly is arranged around the glass template to spray nitrogen to form a nitrogen curtain, and an isolation cavity is formed between the nitrogen curtain around the glass template and the upper infrared heating lamp box as well as between the nitrogen curtain around the glass template and the lower heating plate.

In some embodiments, the nitrogen gas spraying assembly comprises a lower nitrogen gas spraying assembly arranged around the lower heating plate and an upper nitrogen gas spraying assembly arranged around the upper infrared heating lamp box.

In some embodiments, the upper power-on connector of the upper infrared heating lamp box and the lower power-on connector of the lower heating plate are both positioned in the nitrogen curtain.

In some embodiments, the upper infrared heating lamp box comprises a mounting main body and a U-shaped infrared lamp tube, a nitrogen channel is arranged on the side face of the mounting main body, the nitrogen channel is provided with an injection gap facing to the downward heating plate, the upper energized connectors at the two ends of the U-shaped infrared lamp tube are positioned in the nitrogen channel, the tube body of the U-shaped infrared lamp tube completely covers the bottom face of the mounting main body, and the nitrogen channel and the injection hole form part of a nitrogen injection assembly.

In some embodiments, a second cooling device is also included, the cooling device in communication with the vacuum pump device.

In some embodiments, the first cooling device flows through the cooling flow passage to the upper infrared heating lamp box to realize the cooling function of the upper infrared heating lamp box.

In some embodiments, a reflective panel is disposed in the upper infrared heating light box to reflect infrared light toward the glass template.

In some embodiments, the nitrogen spraying assembly further comprises a nitrogen curtain assembly arranged in the furnace body to form a nitrogen curtain on the inner side of the furnace door.

In some embodiments, the furnace body is provided with an access door, and the access door is locked with the furnace body through an explosion-proof lock.

Compared with the related art, the thermal bending forming equipment for the 3D vehicle-mounted glass display cover plate provided by the embodiment of the utility model comprises the following components: a furnace body; the lower heating plate is arranged in the furnace body and used for bearing a glass template, wherein the glass template is used for positioning a 2D glass panel to be heated and bent; the upper infrared heating lamp box is arranged in the furnace body, is controlled by a driving device arranged outside the furnace body and moves up and down relative to the lower heating plate, and has controllable heating position and adjustable heating power; the vacuum pump device is arranged outside the furnace body and communicated with a vacuum pipeline penetrating through the lower heating plate so as to form a deformation adsorption cavity at a deformation position between the bottom surface of the 2D glass panel and the glass template; the nitrogen spraying assembly is arranged in the furnace body outside the furnace body, nitrogen is sprayed out around the glass template to form a nitrogen curtain, and an isolation cavity is formed between the nitrogen curtain around the glass template and the upper infrared heating lamp box as well as between the nitrogen curtain around the glass template and the lower heating plate; the isolation chamber is formed by adopting the continuous nitrogen curtain, so that the entry of oxygen is effectively reduced, and the bad graphite glass template caused by oxidation is reduced.

The details of one or more embodiments of the utility model are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the other features, objects, and advantages of the utility model.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic front view of a thermal bending forming device for a 3D vehicle-mounted glass display cover plate according to an embodiment of the present utility model.

Fig. 2 is a schematic side view of a thermal bending forming device for a 3D vehicle-mounted glass display cover plate according to an embodiment of the present utility model.

FIG. 3 is a schematic diagram of the assembly of the lower heater plate, upper infrared heating light box and nitrogen sparge assembly according to an embodiment of the present utility model.

In the figure, 1, a furnace body; 2. a lower heating plate; 3. an infrared heating lamp box is arranged on the upper part; 4. a vacuum pump device; 5. a nitrogen sparge assembly; 6. a second cooling device; 7. a furnace door; 8. a glass template; 9. a heating plate; 10. a heating tube; 11. a lower electrifying joint; 12. a driving device; 13. a mounting main body; 14. an infrared lamp tube; 15. a nitrogen passage; 16. a power-on connector is arranged; 17. a nitrogen curtain; 18. a lower nitrogen injection assembly; 19. a nitrogen spraying assembly; 20. a nitrogen gas pipe; 21. a reflective panel; 22. a cooling flow passage; 23. a vacuum pipe; 24. a nitrogen curtain; 25. a first cooling device; 26. a gas storage tank; 27. a pressure regulating valve.

Detailed Description

The present utility model will be described and illustrated with reference to the accompanying drawings and examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. All other embodiments, which can be made by a person of ordinary skill in the art based on the embodiments provided by the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model. Moreover, it should be appreciated that while such a development effort might be complex and lengthy, it would nevertheless be a routine undertaking of design, fabrication, or manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as having the benefit of this disclosure.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is to be expressly and implicitly understood by those of ordinary skill in the art that the described embodiments of the utility model can be combined with other embodiments without conflict.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "a," "an," "the," and similar referents in the context of the utility model are not to be construed as limiting the quantity, but rather as singular or plural. The terms "comprising," "including," "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to only those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in connection with the present utility model are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as used herein means greater than or equal to two. "and/or" describes an association relationship of an association object, meaning that there may be three relationships, e.g., "a and/or B" may mean: a exists alone, A and B exist together, and B exists alone. The terms "first," "second," "third," and the like, as used herein, are merely distinguishing between similar objects and not representing a particular ordering of objects.

As shown in fig. 1 to 3, an embodiment of the present utility model provides a 3D vehicle-mounted glass display cover plate hot bending forming apparatus, which includes a furnace body 1, a lower heating plate 2, an upper infrared heating lamp box 3, a vacuum pump device 4, a nitrogen injection assembly 5, a first cooling device 25 and a second cooling device 6. Wherein, lower heating plate 2, upper infrared heating lamp box 3, nitrogen gas jetting subassembly 5 and first cooling device 25 all set up in furnace body 1, and vacuum pump device 4 and second cooling device 6 all set up outside furnace body 1, and act on in the furnace body 1.

In order to provide a heat-insulating and heat-preserving hot-bending forming chamber, the furnace body 1 of the embodiment is provided with an inlet and an outlet of materials, a furnace door 7 capable of opening and closing the inlet and the outlet, and an access door, wherein the furnace door 7 is controlled to be opened and closed by a cylinder through a guide rail, the inner side of the furnace door 7 is provided with a sealing heat-insulating strip, the guide rail comprises a vertical guide rail and a transverse guide rail, the cylinder controls the furnace door 7 to move along the transverse guide rail and then to lift along the vertical guide rail during opening, and otherwise, the cylinder controls the furnace door 7 to descend along the vertical guide rail and then to move along the transverse guide rail during closing so as to close the inlet and the outlet. An observation window is arranged on the access door, the glass deformation condition is known in time, the temperature of the lower heating plate in the furnace can be adjusted in time according to the glass deformation, and the heating quantity and the power of the infrared lamp tubes of the upper infrared heating lamp box are used for coping with the thermal deformation time and the temperature of glass. The access door is provided with an explosion-proof lock to prevent the access door from being opened when the pressure in the furnace is overlarge due to the expansion of nitrogen gas filled in the furnace body, so as to protect the safety of the furnace body and the mechanism in the furnace body. The pressure regulating valve 27 is arranged on the furnace body, and when nitrogen is continuously added, the nitrogen is heated to expand, so that the gas pressure in the furnace chamber is increased, and the pressure regulating valve is used for ensuring the proper pressure in the furnace chamber, so that unsafe factors caused by the increase of the pressure of the cylinder body in the furnace are avoided. The furnace door 7 is positioned by using a guide rail, and the power is an air cylinder, so that the furnace door 7 is quickly opened and closed, the door opening and closing time is reduced, and the oxygen outside the furnace is reduced to enter the furnace.

In order to be able to heat the glass former 8 and then to heat the 2D glass panel located on the glass former 8 downwards, the lower heating plate 2 of this embodiment is arranged in the furnace body 1 for carrying the glass former 8, wherein the glass former 8 is used for positioning the 2D glass panel to be thermally bent. The middle part of the glass template 8 is provided with a 3D deformation concave, and the deformation concave is vacuumized and completely attached to the 2D glass panel after the 2D glass panel is softened, so that the glass panel is changed into a 3D glass panel. The lower heating plate 2 is composed of a heating plate 9 and a heating tube 10 arranged in the heating plate 9, the end part of the heating tube 10 is provided with a lower electrifying connector 11 arranged outside the heating plate 9, and the heating plate 9 is also provided with a temperature measuring hole for installing a temperature measuring sensor, a lower vacuum pipeline communicated with the vacuum pump device 4, a fixing hole for fixing the central position of the heating plate 9 and a horizontal adjusting hole for adjusting the levelness of the heating plate 9. 4 adjusting screws which are matched with the horizontal adjusting holes and can adjust the flatness of the heating plate 8 are arranged on the heating plate 9, and after the plane of the heating plate 9 is adjusted, 2 fixing screws which are matched with the fixing holes are arranged on the heating plate to ensure the flatness of the deformed glass to be processed and are parallel to the upper infrared heating lamp box 3 as much as possible.

In order to heat the 2D glass panel upwards and complete the overall heating of the 2D glass panel together with the lower heating plate 2, the upper infrared heating lamp box 3 of the embodiment is arranged in the furnace body 1, the upper infrared heating lamp box 3 is controlled by the driving device 12 arranged outside the furnace body 1 to move up and down relative to the lower heating plate 2, and the heating position of the upper infrared heating lamp box 3 is controllable and the heating power is adjustable. The driving device 12 is composed of a servo motor and a transmission assembly, wherein the transmission assembly can be a screw rod, a screw rod nut, a transmission belt, a transmission wheel, a guide pillar and a guide sleeve, the servo motor drives the screw rod to rotate through the composition of the transmission wheel and the transmission belt, the screw rod drives the screw rod nut to move up and down in the rotating process, and a connecting plate is assembled on the screw rod nut and is in transmission connection with the upper infrared heating lamp box 3 through the guide pillar and the guide sleeve. This go up infrared heating lamp house 3 includes the infrared lamp tube 14 of installation main part 13 and U type, be provided with around the side of installation main part 13 with nitrogen passage 15, nitrogen passage 15 has the injection gap of facing down hot plate 2, circular telegram joint 16 is located nitrogen passage 15 on the both ends of U type infrared lamp tube 14, the body of U type infrared lamp tube 14 covers completely to the bottom surface of installation main part 13 for the body of infrared lamp tube 14 can be close to 2D glass panels completely closely, and the circular telegram joint 16 of being convenient for can keep away from the high temperature and obtain the cooling well, and nitrogen passage 15 and injection gap constitute and go up nitrogen gas injection assembly 19. The upper infrared heating lamp box uses a U-shaped infrared heating lamp tube, and can be infinitely close to glass on the glass template to heat the glass in a close range.

In order to be able to soften and deform the 2D glass panel after the high temperature, the vacuum pump device 4 provided in this embodiment is disposed outside the furnace body 1 and communicates with the vacuum pipe 23 passing through the lower heating plate 2 to form a deformation adsorption chamber at the deformation position between the bottom surface of the 2D glass panel and the glass template 8. After the 2D glass panel is softened at a high temperature, the vacuum pump device 4 starts the vacuum pipe to absorb the softened portion of the 2D glass panel to form an acting force, so that the softened portion is deformed to be attached to the glass template 8. The vacuum pump apparatus 4 is connected to an air tank 26. The glass template 8 is provided with a plurality of through holes communicated with the vacuum pipeline.

In order to form the isolation cavity around the glass template 8, the nitrogen injection assembly 5 arranged in the embodiment is arranged in the furnace body 1, the nitrogen injection assembly 5 is communicated with a nitrogen source outside the protecting body 1, the nitrogen injection assembly 5 is arranged around the glass template 8 to spray nitrogen to form a nitrogen curtain 17, the isolation cavity is formed between the nitrogen curtain 17 around the glass template 8 and the upper infrared heating lamp box 3 and the lower heating plate 2, oxygen is difficult to enter the isolation cavity under the action of the nitrogen curtain 17 due to the continuous action of the nitrogen, an independent cavity for isolating the oxygen is well formed in the furnace body 1, and the defect that the glass template 8 is oxidized at a high temperature due to the increase of the content of the oxygen in the isolation cavity is avoided. And the upper power-on connector 16 of the upper infrared heating lamp box 3 and the lower power-on connector 11 of the lower heating plate 2 are both positioned in the nitrogen curtain 17, and under the action of the nitrogen curtain 17, the upper power-on connector 16 and the lower power-on connector 11 can be cooled, so that the power-on connector is prevented from being damaged easily due to overhigh temperature. In order to further reduce the influence of oxygen on hot bending, the nitrogen injection assembly 5 of the embodiment sprays nitrogen into the furnace body 1, the nitrogen fills the furnace body 1, and a pressure regulating valve is configured to control the air pressure in the furnace body 1, so that the oxygen concentration in the furnace body 1 is greatly reduced. In order to further reduce the influence of oxygen on hot bending, the furnace door 7 is prevented from being opened to allow oxygen outside the furnace body 1 to enter during feeding and discharging, the nitrogen injection assembly 5 of the embodiment comprises a nitrogen curtain assembly arranged in the furnace body 1, the nitrogen curtain assembly forms a nitrogen curtain 24 on the inner side of the furnace door 7, and the nitrogen curtain 24 can prevent external oxygen from entering during feeding and discharging, so that high-temperature oxidation is further prevented to ensure the hot bending effect.

Specifically, the nitrogen gas injection assembly of this embodiment includes a lower nitrogen gas injection assembly 18 around the lower heating plate 2 and an upper nitrogen gas injection assembly 19 around the upper infrared heating lamp box 3, the upper nitrogen gas injection assembly 19 is composed of a nitrogen gas channel 15 and an injection hole on the outer side of the installation main body 13, the lower nitrogen gas injection assembly 18 is composed of nitrogen gas pipelines 20 around the lower heating plate 2, and an elongated air outlet is provided on the nitrogen gas pipelines 20.

In order to avoid the influence on the outdoor environment when the high-temperature air in the furnace body 1 is pumped out by the vacuum pump device 4 and discharged outdoors, and also to avoid the potential safety hazard, the vacuum pump device 4 is communicated with the second cooling device 6 through the air inlet and outlet, and the high-temperature air is discharged at a low temperature after being exchanged through the heat exchanger, and meanwhile, the vacuum pump device 4 is also protected. The second cooling device 6 comprises a heat exchanger, a water inlet and a water outlet communicated with the cold source and a water inlet and a water outlet communicated with the vacuum pump device, and the cooling liquid of the cold source circularly flows through the heat exchanger through the water inlet and the water outlet so as to cool the high-temperature air entering the heat exchanger through the water inlet and the water outlet.

The first cooling device 25 includes a two-in and two-out cooling channel, the cooling channel is communicated with the mounting main body 13, after the first cooling device 25 is communicated with the cold source, the cooling liquid flows through the inside of the mounting main body 13 through the cooling channel so as to continuously reduce the overall temperature of the mounting main body 13, the conduction temperature does not influence the heating effect of the infrared lamp tube 14 on the 2D glass panel, and in order to strengthen the heating effect of the infrared lamp tube 14 on the 2D glass panel, the bottom surface of the mounting main body 13 in the upper infrared heating lamp box 3 is provided with a reflecting panel 21 for reflecting infrared light towards the glass template 8, and upward infrared light emitted by the infrared lamp tube 14 is reflected onto the 2D glass panel.

The working principle of the embodiment of the utility model comprises the following process flows:

the lower heating plate 2 is heated, when the glass template 8 reaches the preset temperature, the furnace door 7 is opened, and the 2D glass panel is placed on the glass template 8.

The lower heating plate continues to heat, when the glass template 8 reaches the preset temperature, the furnace door 7 is closed, the upper infrared heating lamp box 3 descends under the driving of the driving device 12, and the surface of the infrared lamp tube 14 is kept at a certain distance from the surface of the 2D glass panel.

And the infrared lamp tube 14 at the corresponding position of the upper infrared heating lamp box 3 works at the deformation position of the 2D glass panel to heat the deformation position of the 2D glass panel.

The 2D glass panel is heated up and down, glass at the heating position of the upper infrared heating lamp box 3 is softened, and when the glass template 8 reaches a preset temperature, the heating power of the infrared lamp tube 14 of the upper infrared heating lamp box 3 is reduced to a preset value, and the glass is kept for a certain time.

At this time, the vacuum pump works, the deformed 2D glass panel is adsorbed on the glass template 8 and is attached to the glass panel, and the vacuum pump stops adsorbing after the adsorption time lasts for a certain time.

After the vacuum pump device 4 stops working, the heating power of the infrared lamp tube 14 of the upper infrared heating lamp box 3 is reduced to a preset value, the infrared lamp tube 14 is closed after a certain time is maintained, the upper infrared heating lamp box 3 is lifted after the infrared lamp tube 14 is closed, and the deformed glass is insulated for a certain time.

When the temperature of the glass template 8 is reduced to a preset value, the air cylinder rapidly opens the furnace door 7, the 3D glass panel after hot bending is taken out by using the height Wen Xipan, the 2D glass panel to be deformed is put in, when the temperature of the glass template 8 is reduced to the preset value again, the air cylinder rapidly closes the furnace door 7, the upper infrared heating lamp box 3 is lowered, the furnace door 7 is rapidly opened and closed, firstly, the air outside the furnace is reduced to enter the furnace body 1, and secondly, the rapid temperature drop in the furnace body 1 is reduced.

The material of glass template 8 is graphite, and graphite is easy oxidation at the high temperature, and the surface of oxidation can harm glass, so around lower hot plate 2 and go up infrared heating lamp house 3, the equipartition has nitrogen gas pipeline 20/passageway, evenly open on pipeline/the passageway has the gas outlet, when filling nitrogen gas, the wiring position of infrared lamp tube 14 can be cooled off to the nitrogen gas of last infrared heating lamp house 3, still form the nitrogen gas safety cover with the nitrogen pipe around lower hot plate 2, the protection glass graphite template, simultaneously the stove is filled with nitrogen gas, very big reduction the oxygen concentration in the stove, both play protection glass template 8 simultaneously and reduce oxidation, improve glass template 8's life, reduction in production cost.

It should be understood by those skilled in the art that the technical features of the above-described embodiments may be combined in any manner, and for brevity, all of the possible combinations of the technical features of the above-described embodiments are not described, however, they should be considered as being within the scope of the description provided herein, as long as there is no contradiction between the combinations of the technical features.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1.3D on-vehicle glass shows apron hot bending former, its characterized in that includes:

a furnace body (1) having an openable and closable furnace door (7);

the lower heating plate (2) is arranged in the furnace body (1) and is used for bearing a glass template (8), wherein the glass template (8) is used for positioning a 2D glass panel to be heated and bent;

the upper infrared heating lamp box (3) is arranged in the furnace body (1), the upper infrared heating lamp box (3) is controlled by a driving device (12) arranged outside the furnace body (1) to move up and down relative to the lower heating plate (2), the heating position of the upper infrared heating lamp box (3) is controllable, the heating power is adjustable, and the upper infrared heating lamp box is provided with a first cooling device (25);

the vacuum pump device (4) is arranged outside the furnace body (1) and is communicated with a vacuum pipeline penetrating through the lower heating plate (2) so as to form a deformation adsorption cavity at a deformation position between the bottom surface of the 2D glass panel and the glass template (8); and

the nitrogen gas injection assembly (5) is arranged in the furnace body (1) and is communicated with a nitrogen source outside the furnace body (1), the nitrogen gas injection assembly (5) is arranged around the glass template (8) in a winding mode and ejects nitrogen gas to form a nitrogen gas curtain (17), and an isolation cavity is formed between the nitrogen gas curtain (17) around the glass template (8) and the upper infrared heating lamp box (3) and the lower heating plate (2).

2. The 3D vehicle-mounted glass display cover plate hot bending forming device according to claim 1, wherein the nitrogen gas spraying component (5) comprises a lower nitrogen gas spraying component (18) which is arranged around the lower heating plate (2) and an upper nitrogen gas spraying component (19) which is arranged around the upper infrared heating lamp box (3).

3. The 3D vehicle-mounted glass display cover plate hot bending forming device according to claim 1, wherein an upper power-on connector (16) of the upper infrared heating lamp box (3) and a lower power-on connector (11) of the lower heating plate (2) are both positioned in the nitrogen curtain (17).

4. The 3D vehicle-mounted glass display cover plate hot bending forming device according to claim 1, wherein the upper infrared heating lamp box (3) comprises a mounting main body (13) and a U-shaped infrared lamp tube (14), a nitrogen channel (15) is arranged on the side face of the mounting main body (13), the nitrogen channel (15) is provided with a spraying gap facing the lower heating plate (2), two ends of the U-shaped infrared lamp tube (14) are provided with electric connectors (16) in the nitrogen channel (15), and the tube body of the U-shaped infrared lamp tube (14) completely covers the bottom face of the mounting main body (13), and the nitrogen channel (15) and the spraying gap form a part of the nitrogen spraying assembly.

5. The 3D vehicle-mounted glass display cover plate hot bending forming device according to claim 1, further comprising a second cooling device (6), wherein the cooling device (6) is communicated with the vacuum pump device (4).

6. The 3D vehicle-mounted glass display cover plate hot bending forming device according to claim 1, wherein the first cooling device (25) flows into the upper infrared heating lamp box (3) through a cooling runner to realize the cooling function of the upper infrared heating lamp box (3).

7. A 3D vehicle-mounted glass display cover plate hot bending forming device according to claim 1, characterized in that a reflecting panel (21) for reflecting infrared light towards the glass template (8) is arranged in the upper infrared heating lamp box (3).

8. The 3D vehicle-mounted glass display cover plate hot bending forming device according to claim 1, wherein the nitrogen spraying assembly (5) further comprises a nitrogen curtain assembly arranged in the furnace body (1) to form a nitrogen curtain on the inner side of the furnace door (7).

9. A 3D vehicle mounted glass display cover board hot bending forming apparatus according to claim 1, characterized in that the furnace body (1) is provided with an access door, and the access door is locked with the furnace body (1) by an explosion proof lock.