Cover plate hot bending forming method

Abstract

In the cover plate machining process, firstly, a cover plate is placed in a lower die of a first station, and after a man-machine operation cabin door is closed, a first vacuum pump is started to vacuumize a machining cabin space. And then, the lifting mechanism of each station drives the heating lamp tube to heat the cover plate and the mold, and during the period, the DD motor drives the rotating plate to rotate, so that the cover plate sequentially flows to different stations. And in the third station, the cover plate is subjected to mold pressing, meanwhile, the heat absorption electromagnetic valve is started for absorption, and the cover plate is promoted to be formed. And then, the internal stress of the cover plate is eliminated through multiple annealing treatment at the fourth, fifth and sixth stations. The mold pressing technology and the heat absorption technology are combined, when a forming process is carried out on a product with high precision and large bending degree, adjustment is carried out according to process parameters, the mold pressing technology and the heat absorption technology are synchronously adopted, product forming is promoted, the parameter requirements are met, forming of the product with high precision and large bending degree can be successfully achieved, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The invention mainly relates to the technical field of cover plate processing, and in particular to a method for hot bending forming of a cover plate. Background Art

[0002] As a key component in modern automobile interiors, cover panels play a vital role in the driver's user experience and safe driving. At present, the market demand for this product continues to grow, mainly due to consumers' pursuit of technological and practical interior features. Among them, some products are curved cover panels, which are produced using hot bending technology.

[0003] There are two main types of existing hot bending forming technologies, one is the heating extrusion upper mold forming technology (hereinafter referred to as molding), and the other is the heating adsorption forming technology (hereinafter referred to as heat absorption). For the same product, the molding technology equipment occupies a large area, and it is easy to cause indentation when processing products with high precision and large curvature. The heat absorption technology equipment has a small output and low efficiency. For products with high precision and large curvature, it is easy to cause insufficient deformation and product failure. Summary of the invention

[0004] 1. Technical problem to be solved by the invention: The present invention provides a method for hot bending a cover plate, which is used to solve the technical problems existing in the above-mentioned background technology.

[0005] 2. Technical solution: To achieve the above object, the present invention provides a technical solution: a method for hot bending of a cover plate, comprising the following steps: S1. Place the cover plate into the lower die of the first station, and close the man-machine operation door of the first station; S2, the first vacuum pump is started, and the processing cabin of the first station is vacuumed for a period of time through the industrial gas pipe; S3, the lifting mechanism of the first station drives the heating lamp fixing plate and the heating lamp installed on the heating lamp fixing plate to descend to a certain height to heat the cover plate and the lower mold. After a period of time, the lifting mechanism of the first station drives the heating lamp back to the initial position, the doors between the processing cabins are opened, and the DD motor drives the rotating plate to rotate 60°, bringing the cover plate to the processing cabin of the second station, and then the doors are closed; S4, the lifting mechanism of the second station drives the heating lamp and the upper mold to descend to a certain height to heat the cover plate, the upper mold and the lower mold. After a period of time, the lifting mechanism of the second station drives the heating lamp back to the initial position, the doors between the processing cabins are opened, and the DD motor drives the rotating plate to rotate 60°, bringing the cover plate to the processing cabin of the third station, and then the doors are closed; S5, the lifting mechanism of the third station drives the heating lamp and the upper mold to descend to a certain height to mold the cover plate. At the same time, the heat suction solenoid valve of the heat suction mechanism is opened, and the second vacuum pump adsorbs the cover plate through the heat suction pipe until the cover plate is formed. After a period of time, the lifting mechanism of the third station drives the heating lamp and the upper mold back to the initial position, the heat suction solenoid valve is closed, the hatches between the processing cabins are opened, and the DD motor drives the rotating plate to rotate 60°, and the cover plate is transferred to the processing cabin of the fourth station, and then the hatches are closed; S6, the lifting mechanism of the fourth station drives the heating lamp tube to descend to a certain height to anneal the cover plate. After a period of time, the lifting mechanism of the fourth station drives the heating lamp tube back to the initial position, the hatches between the processing cabins are opened, and the DD motor drives the rotating plate to rotate 60°, bringing the cover plate to the processing cabin of the fifth station, and then the hatches are closed; S7, the lifting mechanism of the fifth station drives the heating lamp tube to descend to a certain height to perform secondary annealing on the cover plate. After a period of time, the lifting mechanism of the fifth station drives the heating lamp tube to return to the initial position, the hatches between the processing cabins are opened, and the DD motor drives the rotating plate to rotate 60°, bringing the cover plate to the processing cabin of the sixth station, and then the hatches are closed; S8, the lifting mechanism of the sixth station drives the heating lamp tube to descend to a certain height to perform three annealing on the cover plate. After a period of time, the lifting mechanism of the fourth station drives the heating lamp tube back to the initial position, the hatches between the processing cabins are opened, and the DD motor drives the rotating plate to rotate 60°, and the cover plate is transferred to the processing cabin of the first station. At this point, a cover plate realizes curved surface forming; S9, open the hatch of the processing compartment in the first station, take out the processed cover plate and put in the cover plate to be processed, and then repeat the above steps to process the cover plates in sequence.

[0006] Preferably, a rotating ring is provided at the center of the rotating plate, the rotating ring is fixed on the output end of the DD motor, the lower end of the DD motor is fixed on the base plate, the base plate is fixed on the frame, six lower molds are installed at equal distances on the rotating plate, and six processing compartments are arranged at equal distances on the frame.

[0007] Preferably, the first workstation is a loading and unloading workstation, and the first workstation includes a processing cabin, a lifting mechanism and a heating lamp fixing plate, the heating lamp fixing plate is fixed on the output end of the lifting mechanism, and the heating lamp fixing plate is used to install the heating lamp.

[0008] Preferably, the second station, the third station, the fourth station, the fifth station and the sixth station have the same structure, the second station includes a processing cabin, a lifting mechanism, an upper mold, a heat suction mechanism and a heating lamp fixing plate, the upper mold and the heating lamp fixing plate are fixedly installed on the output end of the lifting mechanism, the heat suction mechanism includes a heat suction pipe connected to the lower mold, the heat suction pipe is connected to the second vacuum pump, and a heat suction solenoid valve is provided on the heat suction pipe.

[0009] Preferably, the lifting mechanism includes a mounting frame fixed on the processing cabin, a servo motor is fixedly mounted on the mounting frame, the output end of the servo motor is connected to a screw rod, a screw nut is mounted on the screw rod, the screw nut is connected to an active plate, a guide shaft is fixedly mounted on the lower end of the active plate, the guide shaft is slidably mounted on the top plate of the processing cabin, and the lower end of the guide shaft is connected to a heating lamp tube fixing plate.

[0010] 3. Beneficial effects: Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: In the process of processing the cover plate of the present invention, the cover plate is first placed in the lower mold of the first station, and after closing the man-machine operation cabin door, the first vacuum pump is started to evacuate the processing cabin. Then, the lifting mechanism of each station drives the heating lamp to heat the cover plate and the mold. During this period, the DD motor drives the rotating plate to rotate, so that the cover plate is transferred to different stations in turn. At the third station, the cover plate is molded and the heat absorption solenoid valve is opened for adsorption to promote the molding of the cover plate. Subsequently, after multiple annealing treatments at the fourth, fifth and sixth stations, the internal stress of the cover plate is eliminated. Finally, the rotating plate is driven by the DD motor to rotate, so that the cover plate returns to the first station. After completing a processing cycle, the processed cover plate can be taken out and the cover plate to be processed can be placed in, and the above steps are repeated to process the cover plate in sequence. The present invention combines molding technology with heat absorption technology. When the molding process is performed for products with high precision and large curvature, it is adjusted according to the process parameters, and molding and heat absorption technology are used simultaneously to promote product molding and meet the parameter requirements. During the entire processing process, the product can be smoothly returned to the first station through the rotation mechanism of the overall equipment. The present invention has significant advantages. On the one hand, it can successfully realize the molding of products with high precision and large curvature. On the other hand, with the help of the above-mentioned rotating equipment, the floor space is effectively reduced. At the same time, this operation mode can place 6 cover plates for processing at the same time, greatly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A top view of the present invention; Figure 3This is a structural schematic diagram of the present invention without the frame; Figure 4 It is a schematic diagram of the third station structure of the present invention; Figure 5 It is a front view of the third working station of the present invention; Figure 6 It is a schematic diagram of the first station structure of the present invention; Figure 7 It is a front view of the first working station of the present invention.

[0012] Reference numerals: 1. First station; 2. Second station; 3. Third station; 4. Fourth station; 5. Fifth station; 6. Sixth station; 7. Rack; 8. Processing cabin; 9. Bottom plate; 10. Turntable; 11. Lifting mechanism; 111. Mounting frame; 112. Servo motor; 113. Screw; 114. Screw nut; 115. Active plate; 116. Guide shaft; 12. Lower die; 13. Heating lamp fixing plate; 14. Upper die; 15. Heat suction pipe. DETAILED DESCRIPTION

[0013] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0014] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0015] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0016] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] It should be noted that the structures not introduced in the present invention are the same as the prior art or can be implemented by using the prior art, and are not described in detail here because they do not involve the design points and improvement directions of the present invention. Example

[0018] See attached Figures 1 to 7 , a method for hot bending of a cover plate, comprising the following steps: S1. Place the cover plate into the lower die 12 of the first station 1, and close the man-machine operation door of the first station 1; prepare the starting state for the subsequent processing flow, accurately place the cover plate in the lower die 12 and position it, laying the foundation for the subsequent hot bending forming operation.

[0019] S2. The first vacuum pump is started to evacuate the processing cabin 8 of the first station 1 through the industrial air pipe for a period of time; a vacuum environment is created to prevent impurities in the air from affecting the hot bending quality of the cover plate, and at the same time help improve the heating efficiency. The air in the processing cabin is removed to reduce the possibility of oxidation and contamination, creating a stable environment for the subsequent heating process.

[0020] S3, the lifting mechanism 11 of the first station 1 drives the heating lamp fixing plate 13 and the heating lamp installed on the heating lamp fixing plate 13 to a certain height to heat the cover plate and the lower mold 12. After a period of time, the lifting mechanism 11 of the first station 1 drives the heating lamp back to the initial position, the hatches between the processing cabins 8 are opened, and the DD motor drives the rotating plate 10 to rotate 60°, and the cover plate is transferred to the processing cabin 8 of the second station 2, and then the hatches are closed; the cover plate and the lower mold 12 are preliminarily heated at the first station 1 to reach a certain temperature, in preparation for subsequent further processing, and then transferred to the second station 2 to realize the automatic advancement of the process. The lifting mechanism 11 can accurately control the heating height and time to ensure uniform heating.

[0021] S4. The lifting mechanism 11 of the second station 2 drives the heating lamp and the upper mold 14 to descend to a certain height to heat the cover plate, the upper mold 14 and the lower mold 12. After a period of time, the lifting mechanism 11 of the second station 2 drives the heating lamp back to the initial position, and the doors between the processing compartments 8 are opened. The DD motor drives the rotating plate 10 to rotate 60°, and the cover plate is transferred to the processing compartment 8 of the third station 3, and then the doors are closed; the cover plate and the mold are continuously heated to ensure uniform temperature, so as to make full preparations for subsequent molding and heat absorption molding.

[0022] S5, the lifting mechanism 11 of the third station 3 drives the heating lamp tube and the upper mold 14 to descend to a certain height to mold the cover plate. At the same time, the heat suction solenoid valve of the heat suction mechanism is opened, and the second vacuum pump absorbs the cover plate through the heat suction pipe 15 until the cover plate is formed. After a period of time, the lifting mechanism 11 of the third station 3 drives the heating lamp tube and the upper mold 14 back to the initial position, the heat suction solenoid valve is closed, and the hatches between the processing cabins 8 are opened. The DD motor drives the rotating plate 10 to rotate 60°, and the cover plate is transferred to the processing cabin 8 of the fourth station 4, and then the hatches are closed; through the simultaneous action of molding and heat suction, the cover plate is quickly formed to ensure that the shape and size of the product meet the requirements. Combining the two technologies of molding and heat suction, the molding quality and precision are improved.

[0023] S6. The lifting mechanism 11 of the fourth station 4 drives the heating lamp tube to descend to a certain height to anneal the cover plate. After a period of time, the lifting mechanism 11 of the fourth station 4 drives the heating lamp tube to return to the initial position, and the doors between the processing compartments 8 are opened. The DD motor drives the rotating plate 10 to rotate 60°, and the cover plate is transferred to the processing compartment 8 of the fifth station 5, and then the doors are closed. The formed cover plate is annealed to reduce internal stress and prevent deformation or cracking of the cover plate in subsequent use.

[0024] S7. The lifting mechanism 11 of the fifth station 5 drives the heating lamp tube to descend to a certain height to perform secondary annealing on the cover plate. After a period of time, the lifting mechanism 11 of the fifth station 5 drives the heating lamp tube to return to the initial position, and the doors between the processing compartments 8 are opened. The DD motor drives the rotating plate 10 to rotate 60°, and the cover plate is transferred to the processing compartment 8 of the sixth station 6, and then the doors are closed; secondary annealing is performed to further eliminate internal stress and make the performance of the cover plate more stable.

[0025] S8. The lifting mechanism 11 of the sixth station 6 drives the heating lamp tube to descend to a certain height to anneal the cover plate three times. After a period of time, the lifting mechanism 11 of the fourth station 4 drives the heating lamp tube back to the initial position, and the doors between the processing compartments 8 are opened. The DD motor drives the rotating plate 10 to rotate 60° and brings the cover plate to the processing compartment 8 of the first station 1. At this point, a piece of cover plate realizes curved surface forming; after three annealings, the internal stress is eliminated to the maximum extent, making the curved surface forming of the cover plate more stable and durable.

[0026] S9, open the hatch of the processing compartment 8 in the first station 1, take out the processed cover plate and put in the cover plate to be processed, and then repeat the above steps to process the cover plates in sequence. After completing a processing cycle, replace the new cover plate in time for processing to ensure the continuous operation of the production line, realize continuous production, and improve production efficiency.

[0027] A rotating ring is provided at the center of the rotating plate 10, and the rotating ring is fixed on the output end of the DD motor. The lower end of the DD motor is fixed on the base plate 9, and the base plate 9 is fixed on the frame 7. Six lower molds 12 are installed at equal distances on the rotating plate 10, and six processing compartments 8 are arranged at equal distances on the frame 7.

[0028] The first station 1 is a loading and unloading station and includes a processing cabin 8, a lifting mechanism 11 and a heating lamp fixing plate 13, the heating lamp fixing plate 13 is fixed on the output end of the lifting mechanism 11, and the heating lamp fixing plate 13 is used to install the heating lamp.

[0029] The second station 2, the third station 3, the fourth station 4, the fifth station 5 and the sixth station 6 have the same structure. The second station 2 includes a processing cabin 8, a lifting mechanism 11, an upper mold 14, a heat suction mechanism and a heating lamp fixing plate 13. The upper mold 14 and the heating lamp fixing plate 13 are fixedly installed on the output end of the lifting mechanism 11. The heat suction mechanism includes a heat suction pipe 15 connected to the lower mold 12. The heat suction pipe 15 is connected to the second vacuum pump, and a heat suction solenoid valve is arranged on the heat suction pipe 15.

[0030] The lifting mechanism 11 includes a mounting frame 111 fixed on the processing cabin 8, a servo motor 112 is fixedly mounted on the mounting frame 111, the output end of the servo motor 112 is connected to a screw rod 113, a screw rod nut 114 is mounted on the screw rod 113, the screw rod nut 114 is connected to an active plate 115, a guide shaft 116 is fixedly mounted on the lower end of the active plate 115, the guide shaft 116 is slidably mounted on the top plate of the processing cabin 8, and the lower end of the guide shaft 116 is connected to the heating lamp fixing plate 13. The upper mold 14 is also mounted on the lower end of the heating lamp fixing plate 13.

[0031] First, the mounting frame 111 fixes the entire lifting mechanism 11 on the processing cabin 8 to ensure its stability. When a lifting operation is required, the servo motor 112 on the mounting frame 111 is started. The output end of the servo motor 112 drives the screw rod 113 to rotate. As the screw rod 113 rotates, the screw nut 114 installed on the screw rod 113 begins to move up and down along the screw rod 113. The screw nut 114 is connected to the active plate 115, thereby driving the active plate 115 to move. A guide shaft 116 is fixedly installed at the lower end of the active plate 115, and the guide shaft 116 is installed on the top plate of the processing cabin 8 for sliding up and down. When the active plate 115 moves, the guide shaft 116 slides up and down under the restriction of the top plate, playing a role in guiding and stabilizing the movement. Since the lower end of the guide shaft 116 is connected to the heating lamp fixing plate 13, when the active plate 115 moves up and down through the movement of the screw nut 114 on the screw 113, the guide shaft 116 drives the heating lamp fixing plate 13 and the upper mold 14 to move up and down. In this way, through the coordinated action of the servo motor 112, the screw 113, the screw nut 114, the active plate 115 and the guide shaft 116, the lifting and lowering control of the heating lamp fixing plate 13 and the upper mold 14 is realized, thereby meeting the requirements for the height of the heating lamp in different processing stages.

[0032] Working principle: The setting of the rotating plate 10 and six lower molds 12 enables the equipment to process 6 cover plates at the same time, thereby improving production efficiency. The processing cabin 8 of each workstation provides an independent operating space for the hot bending forming of the cover plate, ensuring the stability and consistency of the processing process. The lifting mechanism 11 can accurately control the height of the upper mold 14, the heating lamp fixing plate 13 and other components to meet the needs of different processing stages. The heating lamp is used to heat the cover plate and the mold to reach a suitable molding temperature. The heat absorption mechanism ensures the accuracy and quality of the cover plate molding through adsorption and molding technology. Multiple annealing treatments effectively eliminate the internal stress of the cover plate and improve the stability and service life of the product.

[0033] The rotating ring at the center of the rotating plate 10 is connected to the output end of the DD motor, and the DD motor is fixed on the bottom plate 9, and the bottom plate 9 is fixed on the frame 7. This design makes the equipment occupy a small area, the equipment structure is compact, and the space utilization rate is high.

[0034] The cooperation of the lifting mechanism 11 of each station and the heating lamp tube, upper mold 14 and other components can realize the precise molding of products with high precision and large curvature.

[0035] The combination of heat absorption mechanism and molding technology, as well as multiple annealing treatments, ensures the molding quality and stability of the cover.

[0036] The above-described embodiments only express a certain implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A method for hot bending a cover plate, characterized in that: The following steps are involved: S1, placing the cover plate into the lower mold (12) of the first station (1), and closing the man-machine operation door of the first station (1); S2, the first vacuum pump is started, and the processing cabin (8) of the first station (1) is evacuated through the industrial gas pipe for a period of time; S3, the lifting mechanism (11) of the first station (1) drives the heating lamp fixing plate (13) and the heating lamp installed on the heating lamp fixing plate (13) to descend to a certain height to heat the cover plate and the lower mold (12). After a period of time, the lifting mechanism (11) of the first station (1) drives the heating lamp back to the initial position, the doors between the processing cabins (8) are opened, and the DD motor drives the rotating plate (10) to rotate 60 degrees, bringing the cover plate to the processing cabin (8) of the second station (2), and then the doors are closed; S4, the lifting mechanism (11) of the second station (2) drives the heating lamp and the upper mold (14) to descend to a certain height to heat the cover plate, the upper mold (14) and the lower mold (12). After a period of time, the lifting mechanism (11) of the second station (2) drives the heating lamp back to the initial position, the doors between the processing cabins (8) are opened, and the DD motor drives the rotating plate (10) to rotate 60 degrees, bringing the cover plate to the processing cabin (8) of the third station (3), and then the doors are closed; S5, the lifting mechanism (11) of the third station (3) drives the heating lamp tube and the upper mold (14) to descend to a certain height to mold the cover plate, and at the same time, the heat suction solenoid valve of the heat suction mechanism is opened, and the second vacuum pump absorbs the cover plate through the heat suction pipe (15) until the cover plate is formed. After a period of time, the lifting mechanism (11) of the third station (3) drives the heating lamp tube and the upper mold (14) back to the initial position, the heat suction solenoid valve is closed, and the doors between the processing cabins (8) are opened. The DD motor drives the rotating plate (10) to rotate 60°, and the cover plate is transferred to the processing cabin (8) of the fourth station (4), and then the doors are closed; S6, the lifting mechanism (11) of the fourth station (4) drives the heating lamp tube to descend to a certain height to anneal the cover plate. After a period of time, the lifting mechanism (11) of the fourth station (4) drives the heating lamp tube to return to the initial position, the doors between the processing cabins (8) are opened, and the DD motor drives the rotating plate (10) to rotate 60 degrees, bringing the cover plate to the processing cabin (8) of the fifth station (5), and then the doors are closed; S7, the lifting mechanism (11) of the fifth station (5) drives the heating lamp tube to descend to a certain height to perform secondary annealing on the cover plate. After a period of time, the lifting mechanism (11) of the fifth station (5) drives the heating lamp tube to return to the initial position, the doors between the processing cabins (8) are opened, and the DD motor drives the rotating plate (10) to rotate 60 degrees, bringing the cover plate to the processing cabin (8) of the sixth station (6), and then the doors are closed; S8, the lifting mechanism (11) of the sixth station (6) drives the heating lamp tube to descend to a certain height to perform three annealing on the cover plate. After a period of time, the lifting mechanism (11) of the fourth station (4) drives the heating lamp tube to return to the initial position, the doors between the processing cabins (8) are opened, and the DD motor drives the rotating plate (10) to rotate 60 degrees, and the cover plate is transferred to the processing cabin (8) of the first station (1). At this point, a piece of cover plate is formed into a curved surface; S9, opening the hatch of the processing compartment (8) in the first station (1), taking out the processed cover plate and putting in the cover plate to be processed, and then repeating the above steps to process the cover plates in sequence.

2. A method for hot bending a cover plate according to claim 1, characterized in that: A rotating ring is arranged at the center of the rotating plate (10), and the rotating ring is fixed on the output end of the DD motor. The lower end of the DD motor is fixed on the bottom plate (9), and the bottom plate (9) is fixed on the frame (7). Six lower molds (12) are installed at equal distances on the rotating plate (10), and six processing compartments (8) are arranged at equal distances on the frame (7).

3. A cover plate hot bending forming method according to claim 2, characterized in that: The first workstation (1) is a loading and unloading workstation, and comprises a processing compartment (8), a lifting mechanism (11), and a heating lamp fixing plate (13). The heating lamp fixing plate (13) is fixed on the output end of the lifting mechanism (11), and the heating lamp fixing plate (13) is used to install the heating lamp.

4. A cover plate hot bending forming method according to claim 3, characterized in that: The second workstation (2), the third workstation (3), the fourth workstation (4), the fifth workstation (5) and the sixth workstation (6) have the same structure. The second workstation (2) comprises a processing cabin (8), a lifting mechanism (11), an upper die (14), a heat suction mechanism and a heating lamp fixing plate (13). The upper die (14) and the heating lamp fixing plate (13) are fixedly mounted on the output end of the lifting mechanism (11). The heat suction mechanism comprises a heat suction pipe (15) connected to the lower die (12). The heat suction pipe (15) is connected to a second vacuum pump. A heat suction solenoid valve is arranged on the heat suction pipe (15).

5. A method for hot bending a cover plate according to claim 4, characterized in that: The lifting mechanism (11) comprises a mounting frame (111) fixed on the processing cabin (8), a servo motor (112) being fixedly mounted on the mounting frame (111), an output end of the servo motor (112) being connected to a screw rod (113), a screw rod nut (114) being mounted on the screw rod (113), the screw rod nut (114) being connected to an active plate (115), a guide shaft (116) being fixedly mounted on the lower end of the active plate (115), the guide shaft (116) being slidably mounted on the top plate of the processing cabin (8) in an up-and-down manner, and the lower end of the guide shaft (116) being connected to a heating lamp tube fixing plate (13).

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