A hot-pressing apparatus and a hot-pressing method

Abstract

The present application belongs to the technical field of glass hot-pressing equipment, and particularly relates to a hot-pressing device and a hot-pressing method. The hot-pressing device comprises a first cavity and a second cavity, the second cavity is arranged along a predetermined direction and is spaced and fixed with the first cavity, the first cavity is provided with a first opening communicating with the first accommodating cavity, the second cavity is provided with a second opening communicating with the second accommodating cavity, the hot-pressing device further comprises a first pressing plate and a second pressing plate which are slidingly arranged along the predetermined direction, the first pressing plate and the second pressing plate are respectively located in the first accommodating cavity and the second accommodating cavity, and are respectively arranged corresponding to the first opening and the second opening, and the first accommodating cavity and the second accommodating cavity are filled with a flexible medium with a predetermined pressure to drive the first pressing plate and the second pressing plate to move towards each other. The present application can make the first pressing plate and the second pressing plate be uniformly stressed, can steplessly adjust the hot-pressing force applied on the upper die and the lower die, and finally realize the precise adjustment of the hot-pressing force.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of glass hot pressing equipment, and particularly relates to a hot pressing device and a hot pressing method. BACKGROUND

[0002] Glass precision hot pressing technology is an important process in the modern manufacturing field and is widely used in many fields such as building, automobile, electronics and solar energy. With the development of science and technology, the performance and appearance requirements of glass products are gradually improved, and the traditional glass forming method cannot fully meet the needs of precision, quality and production efficiency. Precision hot pressing equipment plays a vital role in this context, which can realize the manufacturing of glass products with complex shape and high precision pattern by accurately controlling temperature, pressure and deformation.

[0003] However, the existing hot pressing equipment still has certain technical bottlenecks in the pressure providing mode, process precision and equipment life. At present, most hot pressing equipment relies on mechanical pressure transmission system, such as providing hot pressure through mechanical transmission. The screw mechanism is generally used in mechanical transmission, which can realize the basic forming requirements, but the screw is connected to the center position of the lower mold in the hot pressing process, which causes uneven pressure distribution and easily causes local stress concentration of the glass product, resulting in low yield, and it is difficult to accurately control the forming quality when producing complex geometric shapes. In addition, the pressure of the traditional precision hot pressing equipment is driven by motor, and due to the thread gap of the screw, transmission error is inevitable, especially in reverse transmission, the motor control cannot realize precise and accurate pressure control. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a hot pressing device, which aims to solve the problem of how to make the pressure on the mold evenly distributed and accurately adjust the pressure applied on the mold.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0006] In a first aspect, a hot pressing device is provided, comprising: a first cavity having a first accommodating cavity and a second cavity having a second accommodating cavity, the second cavity and the first cavity are spaced apart and fixedly arranged along a predetermined direction, the first cavity is provided with a first opening communicating with the first accommodating cavity, the second cavity is provided with a second opening communicating with the second accommodating cavity, the hot pressing device further comprises a first pressure plate and a second pressure plate which are slidingly arranged along the predetermined direction, the first pressure plate and the second pressure plate are respectively located in the first accommodating cavity and the second accommodating cavity, and are respectively arranged corresponding to the first opening and the second opening, the first accommodating cavity and the second accommodating cavity are filled with a flexible medium with a predetermined pressure to drive the first pressure plate and the second pressure plate to move towards each other.

[0007] In some embodiments, the plate edge of the first pressing plate is sealingly and slidingly connected to the inner wall of the first accommodating cavity, and / or the plate edge of the second pressing plate is sealingly and slidingly connected to the inner wall of the second accommodating cavity.

[0008] In some embodiments, the hot pressing device further comprises a third pressing plate located in the first accommodating cavity, the third pressing plate being slidingly arranged along the predetermined direction, and the first pressing plate being located between the second pressing plate and the third pressing plate.

[0009] In some embodiments, the hot pressing device further comprises a first electromagnet, and two of the first electromagnets are oppositely arranged in the first accommodating cavity, one of the first electromagnets being connected to the first pressing plate and the other of the first electromagnets being connected to the inner wall of the first accommodating cavity.

[0010] In some embodiments, two of the first electromagnets are arranged on the two side plate faces of the third pressing plate respectively.

[0011] In some embodiments, the hot pressing device further comprises a second electromagnet, and two of the second electromagnets are oppositely arranged in the second accommodating cavity, one of the second electromagnets being connected to the second pressing plate and the other of the second electromagnets being connected to the inner wall of the second accommodating cavity.

[0012] In some embodiments, the hot pressing device further comprises an ultrasonic resonator, the ultrasonic resonator being connected to the first pressing plate or the second pressing plate and being located between the first pressing plate and the second pressing plate.

[0013] In some embodiments, the hot pressing device further comprises a counterweight located in the first accommodating cavity, the counterweight being connected to the first pressing plate.

[0014] In some embodiments, the hot pressing device further comprises a guide assembly, the guide assembly comprising a guide column fixedly arranged along the predetermined direction and a guide sleeve slidingly connected to the guide column, and the guide sleeve being connected to the first pressing plate and the second pressing plate.

[0015] In a second aspect, a hot pressing method is provided, the hot pressing method being implemented by using the hot pressing device, and the hot pressing method comprising the following steps:

[0016] preparing a hot pressing mold, the hot pressing mold comprising an upper mold connected to the first pressing plate and a lower mold connected to the second pressing plate;

[0017] placing a glass element on the upper surface of the lower mold and heating the lower mold and the glass element;

[0018] filling the flexible medium with the predetermined pressure into the first accommodating cavity;

[0019] filling the second accommodating cavity with the flexible medium of the predetermined pressure to drive the upper die and the lower die to close and hot-press the glass element;

[0020] cooling the lower die and the glass element.

[0021] The application has the beneficial effect that: by oppositely arranging the first cavity and the second cavity in the vertical direction and fixedly arranging the first cavity and the second cavity, the upper die is connected with the first pressing plate through the first opening, the lower die is connected with the second pressing plate through the second opening, and the flexible medium of a certain pressure is filled into the first accommodating cavity and the second accommodating cavity, so that the first pressing plate and the second pressing plate move towards each other, and since the pressure in the first accommodating cavity or the second accommodating cavity is uniform everywhere, the flexible medium can make the first pressing plate and the second pressing plate bear force uniformly, and then the hot-pressing force transmitted to the upper die and the lower die by the first pressing plate and the second pressing plate is also uniformly distributed, and by using the pneumatic or hydraulic transmission, there is no transmission gap, and by changing the pressure of the pneumatic or hydraulic pressure, the hot-pressing force applied to the upper die and the lower die can be steplessly adjusted, and finally the precise adjustment of the hot-pressing force is realized. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or exemplary technical description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0023] Figure 1 is a schematic diagram of the hot-pressing device provided by the embodiment of the application;

[0024] Figure 2 is a schematic diagram of the hot-pressing device of Figure 1 ;

[0025] Figure 3 is an exploded schematic diagram of the hot-pressing device of Figure 1 ;

[0026] Figure 4 is a flow chart of the hot-pressing method provided by another embodiment of the application.

[0027] In the drawings, various reference signs represent:

[0028] 100, hot pressing device; 11, first cavity; 12, second cavity; 101, first communication hole; 102, second communication hole; 20, guide assembly; 21, guide column; 22, guide sleeve; 14, control structure; 30, hot pressing mold; 111, first accommodating cavity; 112, second accommodating cavity; 131, first pressing plate; 132, second pressing plate; 133, third pressing plate; 41, first electromagnet; 42, second electromagnet; 311, upper mold; 312, water-cooled heat insulation block; 313, pressure sensor; 314, connecting block; 315, ultrasonic resonator; 321, vacuum cover; 322, heating module; 323, heat insulation sheet; DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0030] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only used for convenience of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first", "second" are only used for the purpose of convenience of description, and cannot be understood as indicating or implying relative importance or implying the number of technical features. The meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0031] Referring to Figures 1 to 3 The embodiment of the present application provides a hot pressing device 100, which can drive a hot pressing mold 30 to perform hot pressing forming on a glass element. The glass element can be optical glass and in the form of a plate. The hot pressing mold 30 includes an upper mold 311 and a lower mold cooperating with the upper mold 311. The optical glass can be placed in the lower mold, and the optical glass is heated, and then the upper mold 311 and the lower mold are driven to be combined, so as to realize hot pressing forming on the optical glass.

[0032] Referring to Figures 1 to 3The hot-pressing device 100 comprises a first cavity 11 with a first accommodating cavity 111 and a second cavity 12 with a second accommodating cavity 112, the second cavity 12 and the first cavity 11 are arranged along a predetermined direction, in the embodiment, the predetermined direction is along the vertical direction, and the first cavity 11 is located above the second cavity 12.

[0033] The first cavity 11 is provided with a first opening communicating with the first accommodating cavity 111, and the first opening is arranged downward, the second cavity 12 is provided with a second opening communicating with the second accommodating cavity 112, and the second opening is arranged upward, the hot-pressing device 100 further comprises a first pressing plate 131 and a second pressing plate 132 which are arranged along the predetermined direction, the predetermined direction is the vertical direction, the first pressing plate 131 and the second pressing plate 132 are respectively located in the first accommodating cavity 111 and the second accommodating cavity 112, and are respectively arranged corresponding to the first opening and the second opening.

[0034] Please refer to Figures 1 to 3 It can be understood that the lower surface of the first pressing plate 131 is connected with the upper die 311, the upper surface of the second pressing plate 132 is connected with the lower die, and the movement of the first pressing plate 131 and the second pressing plate 132 can drive the upper die 311 and the lower die to move synchronously.

[0035] Please refer to Figures 1 to 3 The first accommodating cavity 111 and the second accommodating cavity 112 are filled with a flexible medium with a predetermined pressure, so as to drive the first pressing plate 131 and the second pressing plate 132 to move along the vertical direction, thereby driving the upper die 311 and the lower die to close. The flexible medium can be gas or liquid, the gas can be air, and the liquid can be water, oil or oil-water mixture. The range of the predetermined pressure can be 5-10 atmospheres, such as 5, 6, 7.3, 8, 9, 10 atmospheres, which is not limited here and can be selected according to the actual situation.

[0036] Please refer to Figures 1 to 3The hot pressing device 100 provided by the embodiment is characterized in that the first cavity 11 and the second cavity 12 are arranged opposite to each other in the vertical direction, and the first cavity 11 and the second cavity 12 are fixedly arranged; the upper die 311 is connected to the first pressing plate 131 through the first opening, and the lower die is connected to the second pressing plate 132 through the second opening; the flexible medium with a certain pressure is filled into the first accommodating cavity 111 and the second accommodating cavity 112, so that the first pressing plate 131 and the second pressing plate 132 move towards each other; because the pressure in the first accommodating cavity 111 and the second accommodating cavity 112 is the same everywhere, the flexible medium can make the first pressing plate 131 and the second pressing plate 132 bear uniform force, and then the pressure transmitted to the upper die 311 and the lower die by the first pressing plate 131 and the second pressing plate 132 is also uniformly distributed; and the pressure transmission gap does not exist through the air pressure or hydraulic transmission, the hot pressing force applied to the upper die 311 and the lower die can be steplessly adjusted by changing the pressure of the air pressure or the hydraulic pressure, and finally the precise adjustment of the hot pressing force is realized.

[0037] Optionally, the first cavity 11 is provided with a first communication hole 101, so that the flexible medium enters or flows out of the first accommodating cavity 111; and the second cavity 12 is provided with a second communication hole 102, so that the flexible medium enters or flows out of the second accommodating cavity 112.

[0038] Optionally, the upper die 311 and the lower die are driven by the air pressure or the hydraulic pressure, so that the production efficiency and the product quality of the optical glass precision hot pressing are improved, the hot pressing device 100 provided by the embodiment can provide uniform and controllable pressure, and the innovative hot pressing device with reduced processing stress and improved equipment life is provided.

[0039] It can be understood that when the flexible medium is a liquid, the pressure applied to the first pressing plate 131 also needs to add the gravity of the liquid in the first accommodating cavity 111, so as to increase the hot pressing force applied to the upper die 311, so that the maximum hot pressing force is generated on the limited structure, and the compactness of the whole structure of the hot pressing device 100 is also beneficial. In addition, the liquid in the first accommodating cavity 111 and the second accommodating cavity 112 also has a heat insulation effect, which can respectively hinder the heat conduction of the upper die 311 and the lower die, so as to avoid the influence of heat on other electronic elements.

[0040] Please refer to Figures 1 to 3 In some embodiments, the plate edge of the first pressing plate 131 is sealingly and slidingly connected to the inner wall of the first accommodating cavity 111.

[0041] In some embodiments, the plate edge of the second pressing plate 132 is sealingly and slidingly connected to the inner wall of the second accommodating cavity 112.

[0042] Optionally, the sealing ring is arranged on the side surface of the first pressing plate 131 and the second pressing plate 132, so as to realize the sealing and sliding connection between the first pressing plate 131 and the inner wall of the first accommodating cavity 111, and between the second pressing plate 132 and the inner wall of the second accommodating cavity 112.

[0043] Optionally, the edge of the first pressing plate 131 is sealingly and slidably connected with the inner wall of the first accommodating cavity 111, so as to avoid the leakage of the flexible medium and ensure the stability and reliability of the working pressure. Similarly, the edge of the second pressing plate 132 is sealingly and slidably connected with the inner wall of the second accommodating cavity 112, so as to avoid the leakage of the flexible medium and ensure the stability and reliability of the working pressure.

[0044] Please refer to Figures 1 to 3 In some embodiments, the hot-pressing device 100 further comprises a third pressing plate 133 arranged in the first accommodating cavity 111, the third pressing plate 133 is arranged to slide in a predetermined direction, and the first pressing plate 131 is arranged between the second pressing plate 132 and the third pressing plate 133. The predetermined direction is the vertical direction.

[0045] It can be understood that the third pressing plate 133 divides the first accommodating cavity 111 into two parts, so as to realize the step adjustment of the hot-pressing pressure. For example, the third pressing plate 133 is fixed in the vertical direction, a limiting column is detachably arranged on the third pressing plate 133, the two ends of the limiting column abut against the cavity top of the first accommodating cavity 111 and the third pressing plate 133 respectively, a gas or liquid with a certain pressure is filled into the area of the first accommodating cavity 111 between the first pressing plate 131 and the third pressing plate 133, or the limiting column is removed, the third pressing plate 133 is no longer limited in the vertical direction, and the third pressing plate 133 slides upward to the limit position, and a gas or liquid with a certain pressure is filled into the entire first accommodating cavity 111, so as to realize the multiple adjustment of the hot-pressing pressure.

[0046] Please refer to Figures 1 to 3 In some embodiments, the hot-pressing device 100 further comprises a first electromagnet 41, and two first electromagnets 41 are arranged in the first accommodating cavity 111 in a opposite manner, one of the first electromagnets 41 is connected with the first pressing plate 131, and the other first electromagnet 41 is connected with the inner wall of the first accommodating cavity 111, such as the cavity top. It can be understood that the first electromagnet 41 comprises a permanent magnet and a coil wound around the permanent magnet, which is a prior art and will not be described here.

[0047] Optionally, the first electromagnet 41 is plate-shaped, and the two first electromagnets 41 can be magnetically repulsive or attractive. For example, when the upper die 311 and the lower die are combined, the two first electromagnets 41 are magnetically repulsive, thereby increasing the downward force applied to the upper die 311; after the hot pressing is completed, the upper die 311 and the lower die are separated, the pressure in the first accommodating cavity 111 and the second accommodating cavity is reduced, the first pressing plate 131 and the second pressing plate 132 move away from each other, the first pressing plate 131 rises, and the second pressing plate 132 descends; the current direction of the two first electromagnets 41 is changed, so that the two first electromagnets 41 are magnetically attractive, thereby increasing the rising speed and stability of the first pressing plate 131, and achieving rapid demolding.

[0048] It can also be understood that by controlling and adjusting the size of the current on the first electromagnet 41, the electromagnetic force can be accurately adjusted, thereby accurately adjusting the hot pressing force applied to the upper die 311.

[0049] Optionally, the material of the first pressing plate 131 is a magnetic conductive material, such as metal iron. The first pressing plate 131 made of a magnetic conductive material can improve the uniformity of the magnetic field distribution of the first electromagnet 41 connected to the first pressing plate 131, ultimately increasing the magnetic field force received by the first pressing plate 131 and making the force uniform, thereby making the force uniformity of the upper die 311 and the lower die, and improving the hot pressing precision.

[0050] Please refer to Figures 1 to 3 In some embodiments, the two side plates of the third pressing plate 133 are respectively provided with two first electromagnets 41.

[0051] Optionally, the four first electromagnets 41 located in the first accommodating cavity 111 can be sequentially magnetically attractive or magnetically repulsive, thereby adjusting the hot pressing force applied to the upper die 311.

[0052] In some embodiments, the hot pressing device 100 further comprises a second electromagnet 42, and the second accommodating cavity 112 is provided with two oppositely arranged second electromagnets 42, one of which is connected to the second pressing plate 132, and the other is connected to the inner wall of the second accommodating cavity 112, such as the bottom of the cavity.

[0053] Please refer to Figures 1 to 3Optionally, the second electromagnet 42 is plate-shaped, and the two second electromagnets 42 can be magnetically repulsive or attractive. For example, when the upper die 311 and the lower die are combined, the two second electromagnets 42 are magnetically repulsive, thereby increasing the upward force applied to the lower die; after the hot pressing is completed, the upper die 311 and the lower die are separated, the pressure in the first accommodating cavity 111 and the second accommodating cavity decreases, the first pressing plate 131 and the second pressing plate 132 move away from each other, the first pressing plate 131 rises, and the second pressing plate 132 descends; the current direction of the two second electromagnets 42 is changed so that the two second electromagnets 42 are magnetically attractive, thereby increasing the descending speed and stability of the second pressing plate 132, and achieving rapid demolding.

[0054] It can also be understood that by controlling and adjusting the size of the current on the second electromagnet 42, the electromagnetic force can be accurately adjusted, thereby accurately adjusting the hot pressing force applied to the lower die.

[0055] Optionally, the material of the second pressing plate 132 is a magnetic conductive material, such as metal iron. The second pressing plate 132 made of a magnetic conductive material can improve the uniformity of the magnetic field distribution of the second electromagnet 42 connected to the second pressing plate 132, ultimately increasing the magnetic field force received by the second pressing plate 132 and making the force received by the second pressing plate 132 uniform, thereby making the force received by the upper die 311 and the lower die uniform and improving the hot pressing precision.

[0056] Please refer to Figures 1 to 3 In some embodiments, the hot pressing device 100 further comprises an ultrasonic resonator 315 connected to the first pressing plate 131 or the second pressing plate 132 and located between the first pressing plate 131 and the second pressing plate 132.

[0057] Please refer to Figures 1 to 3 Optionally, the first pressing plate 131 and the second pressing plate 132 are each provided with an ultrasonic resonator 315, and the upper die 311 and the lower die are connected to the two ultrasonic resonators 315. The ultrasonic resonator 315 can generate ultrasonic waves to the hot pressing die 30. The ultrasonic waves can be longitudinal waves or transverse waves. The introduction of the ultrasonic resonator 315 can assist the hot pressing process through high-frequency vibration, improve the flowability of the optical glass material, and improve the processing efficiency. Ultrasonic vibration also helps to reduce micro defects on the surface of the material during processing, making the surface of the optical glass after hot pressing smoother and more flat.

[0058] Please refer to Figures 1 to 3It can be understood that, through the combination of gas / liquid pressure, magnetic field force and the gravity of the mechanical part of the hot-pressing mold 30, and through the neuron control strategy, precise application and stepless adjustment of the hot-pressing force can be realized. The hot-pressing force is improved in uniformity and stability, and a stepless regulated force is provided. The ultrasonic resonator 315 can realize high-frequency vibration of the upper mold 311 and the lower mold, and transmit the vibration to the optical glass, so as to improve the internal energy of the processed optical glass, reduce the energy required by the optical glass in precise hot-pressing, and improve the high-surface-energy behavior of the surface of the hot-pressing mold 30.

[0059] Through the ultrasonic resonator 315, the flowability of the optical glass can also be effectively controlled, so as to avoid material deformation and defects in the processing of complex structures, thereby meeting the processing requirements of high precision and high performance.

[0060] It can be understood that, the hot-pressing device 100 provided by the embodiment avoids the use of traditional motor driving and ball screw transmission for hot-pressing force transmission, and forms a composite force through the repulsive force of the first electromagnet 41 and the second electromagnet 42 and the pressure of the gas (liquid) pressure, so as to realize precise regulation of the force field and multiplication of the hot-pressing force of the small device, which can be beneficial to the compactness of the structure of the hot-pressing device 100. Through the ultrasonic resonator 315, the type, vibration frequency and power energy size of the ultrasonic wave applied to the upper mold 311 and the lower mold are regulated, so as to regulate the acoustic field and the force field.

[0061] Please refer to Figures 1 to 3 In some embodiments, the hot-pressing device 100 further comprises a counterweight in the first accommodating cavity 111, and the counterweight is connected to the first pressing plate 131.

[0062] Optionally, the material of the counterweight can be a metal material with relatively large density, such as metal iron. The counterweight can balance the movement of the first pressing plate 131 during the hot-pressing process, prevent the movement instability problem caused by the pressure fluctuation of the flexible medium, and provide additional hot-pressing force. Through the balancing effect of the counterweight, the closing of the upper mold 311 and the lower mold during the whole hot-pressing process is ensured, and the hot-pressing quality is improved.

[0063] Please refer to Figures 1 to 3 In some embodiments, the hot-pressing device 100 further comprises a guide assembly 20, the guide assembly 20 comprises guide columns 21 fixedly arranged along a predetermined direction and guide sleeves 22 slidably connected to the guide columns 21, and the guide sleeves 22 are connected to the first pressing plate 131 and the second pressing plate 132. The two ends of the guide columns 21 respectively extend into the first accommodating cavity 111 and the second accommodating cavity 112, and are respectively connected to the first cavity 11 and the second cavity 12. The guide sleeves 22 are also arranged on the third pressing plate 133

[0064] Optionally, the guiding assembly 20 is provided with four, the first pressing plate 131 and the second pressing plate 132 are square plates, and the four guiding assemblies 20 are respectively located at four right angles of the first pressing plate 131 and the second pressing plate 132. The cooperation of the guide column 21 and the guide sleeve 22 ensures the accurate sliding of the first pressing plate 131, the second pressing plate 132 and the third pressing plate 133 in the vertical direction, avoids deviation or inclination, and improves the machining precision.

[0065] Referring to Figures 1 to 3 Optionally, the hot-pressing die 30 further comprises a water-cooled heat insulation block 312, a pressure sensor 313, a heating module 322, a heat insulation sheet 323 and a vacuum cover 321, the upper die 311, the water-cooled heat insulation block 312, the pressure sensor 313, the connecting block 314, the ultrasonic resonator 315 and the first pressing plate 131 are sequentially connected from bottom to top, and the upper die 311 is partially located in the vacuum cover 321 and is sealingly and slidably connected with the vacuum cover 321, the lower die (not shown in the figure), the heating module 322, the heat insulation sheet 323, the pressure sensor 313, the connecting block 314 and the ultrasonic resonator 315 are sequentially connected from top to bottom, and the lower die is located in the vacuum cover 321.

[0066] The material of the vacuum cover 321 can be optical glass, the material of the heat insulation sheet 323 can be mica, and the material of the upper die 311 can be hard alloy.

[0067] Referring to Figures 1 to 3 Optionally, the hot-pressing device 100 further comprises a control structure 14 connected with the second cavity 12 and used for controlling the first electromagnet 41, the second electromagnet 42, the ultrasonic resonator 315, the air pressure pump and the hydraulic pump, the air pressure pump is used for pumping gas into the first containing cavity 111 and the second containing cavity 112, and the hydraulic pump is used for pumping liquid into the first containing cavity 111 and the second containing cavity 112.

[0068] Referring to Figures 1 to 3 Figure 4 The application further provides a hot-pressing method, which uses the hot-pressing device 100 described above to implement the specific structure of the hot-pressing device 100. The specific structure of the hot-pressing device 100 is described above. Since the hot-pressing method adopts all the technical solutions of all the embodiments described above, it also has all the beneficial effects brought by the technical solutions of the embodiments described above, which will not be described one by one here.

[0069] The hot-pressing method comprises the following steps:

[0070] S1: preparing a hot-pressing die 30, the hot-pressing die 30 comprising an upper die 311 connected with a first pressing plate 131 and a lower die connected with a second pressing plate 132;

[0071] S2: placing the optical glass on the upper surface of the lower mold, and heating the lower mold and the optical glass; the lower mold and the optical glass can be heated by the heating module 322 to heat the optical glass to the glass transition temperature;

[0072] S3: filling the flexible medium into the first accommodating cavity 111 to a certain pressure;

[0073] S4: filling the flexible medium into the second accommodating cavity 112 to a certain pressure to drive the upper mold 311 and the lower mold to be combined, and heat-press the optical glass;

[0074] S5: cooling the lower mold and the optical glass.

[0075] It can be understood that the flexible medium is used to drive the heat-press mold to be combined, which is combined with the electromagnetic force and the ultrasonic resonator, so that the heat-press force can be accurately controlled, and the deformation of the optical glass in the heat-press process is uniform, and the optical glass is precisely formed.

[0076] The above is only an optional embodiment of the present application and is not used to limit the present application. The present application can have various changes and variations for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A hot pressing device, characterized in that: include: A first cavity having a first accommodating cavity and a second cavity having a second accommodating cavity, the second cavity and the first cavity are spaced apart and fixedly arranged along a predetermined direction, the first cavity is provided with a first opening communicating with the first accommodating cavity, and the second cavity is provided with a second opening communicating with the second accommodating cavity, the hot pressing device further comprising a first pressing plate and a second pressing plate both slidably arranged along the predetermined direction, the first pressing plate and the second pressing plate are respectively located in the first accommodating cavity and the second accommodating cavity, and are respectively arranged corresponding to the first opening and the second opening, the first accommodating cavity and the second accommodating cavity are filled with a flexible medium of predetermined pressure to drive the first pressing plate and the second pressing plate to move toward each other; The hot pressing device further includes a third pressing plate located in the first accommodating cavity, the third pressing plate being slidably arranged along the predetermined direction, and the first pressing plate being located between the second pressing plate and the third pressing plate; The hot pressing device further includes a first electromagnet. Two first electromagnets are disposed opposite to each other in the first accommodating chamber, one of the first electromagnets is connected to the first pressing plate, and the other first electromagnet is connected to the top surface of the first accommodating chamber. Two first electromagnets are respectively provided on both side surfaces of the third pressing plate; The hot pressing device further includes a second electromagnet. Two second electromagnets are disposed opposite to each other in the second accommodating chamber, one of the second electromagnets is connected to the second pressing plate, and the other second electromagnet is connected to the bottom surface of the second accommodating chamber. The two first electromagnets are magnetically repelled or magnetically attracted by controlling the direction of current; the two second electromagnets are magnetically repelled or magnetically attracted by controlling the direction of current.

2. The hot pressing device according to claim 1, wherein: The plate edge of the first pressing plate is sealed and slidably connected to the inner wall of the first accommodating cavity, and / or the plate edge of the second pressing plate is sealed and slidably connected to the inner wall of the second accommodating cavity.

3. The hot pressing device according to any one of claims 1-2, characterized in that: The hot pressing device further includes an ultrasonic resonator, which is connected to the first pressing plate or the second pressing plate and is located between the first pressing plate and the second pressing plate.

4. The hot pressing device according to any one of claims 1-2, characterized in that: The hot pressing device further includes a counterweight located in the first accommodating cavity, and the counterweight is connected to the first pressing plate.

5. The hot pressing device according to any one of claims 1-2, characterized in that: The hot pressing device further includes a guide assembly, which includes a guide column fixedly arranged along the predetermined direction and a guide sleeve slidably connected to the guide column, and the first pressing plate and the second pressing plate are both connected to the guide sleeve.

6. A hot pressing method, which is implemented using the hot pressing device according to any one of claims 1 to 5, the hot pressing method comprising the following steps: preparing a hot pressing mold, wherein the hot pressing mold includes an upper mold connected to the first pressing plate and a lower mold connected to the second pressing plate; placing a glass element on the upper surface of a lower mold, and heating the lower mold and the glass element; Filling the first accommodating chamber with the flexible medium of the predetermined pressure; Filling the second accommodating cavity with the flexible medium of the predetermined pressure to drive the upper mold and the lower mold to close the mold and hot-press the glass element; The lower mold and the glass element are cooled.

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