A hot-pressing device and method for LCD liquid crystal display production

Abstract

The application discloses a hot-pressing device and method for LCD liquid crystal display screen production, which comprises a base, a support arranged on the base, a pneumatic cylinder arranged above the support, a connecting element connected to the output end of the pneumatic cylinder and penetrating through the upper surface of the support, a hot-pressing element connected to the lower portion of the connecting element, a heat preservation module and a heat dissipation module arranged in the hot-pressing element, a plurality of blind grooves arranged in a ring shape and formed in the lower surface of the hot-pressing element, a plurality of springs arranged in the blind grooves, a heat preservation frame fixedly connected to the lower end of each spring, a shaft rod arranged on one side of the heat preservation frame, a heat preservation film wound on the shaft rod, a film rod fixedly connected to the movable end of the heat preservation film and penetrating through one side of the heat preservation frame, and a connecting line connected to the two ends of the film rod. The device solves the problem that the current hot-pressing device cannot reasonably control the heat preservation and heat dissipation of the hot-pressing plate.

Description

Technical Field

[0001] The invention belongs to the technical field of LCD liquid crystal display screen production, and particularly relates to a hot pressing device and method for producing LCD liquid crystal display screens. Background Art

[0002] Hot pressing technology plays a vital role in the production of LCD screens. A hot press softens and flows the glue or adhesive inside the LCD screen by applying heat and pressure, thereby filling the tiny gaps between the screen and the backlight or other components. Under the combined effects of pressure and temperature, the adhesive rapidly solidifies, forming a strong bond. This hot pressing technology provides uniform heating and stable pressure, allowing the various components of the LCD screen to be tightly bonded together, preventing air and moisture from entering, thereby improving the quality of the package. It also allows for closer contact between the components of the LCD screen, reducing light scattering and reflection, thereby improving the display quality. It also enhances the weather resistance and impact resistance of the LCD screen, improving the product's reliability and service life.

[0003] Nowadays, the hot pressing device in the production process of LCD liquid crystal display screens still cannot reasonably control the insulation and heat dissipation of the hot pressing plate. That is, the hot pressing plate needs to maintain a certain temperature during the heating process. If the insulation measures are insufficient, the temperature of the hot pressing plate will drop rapidly, affecting the hot pressing effect; insufficient insulation will cause the hot press to consume more energy to maintain the required temperature, thereby increasing production costs; temperature fluctuations will affect the stability of the hot pressing process, resulting in unstable product quality. At the same time, the hot pressing plate cannot dissipate heat in time, which will cause the temperature to be too high, thereby damaging the equipment or reducing the service life; excessively high temperatures will affect the thermoplastic state of the material, resulting in a decline in product quality, such as bubbles, deformation, and other problems may occur in the LCD screen; high temperature environments may cause safety hazards such as fire. This phenomenon has become a problem that needs to be urgently solved by people in this field. Summary of the Invention

[0004] The purpose of the present invention is to provide a hot pressing device and method for producing LCD liquid crystal display screens in accordance with the existing device, so as to solve the problems raised in the above background technology.

[0005] To solve the above technical problems, the first aspect of the present invention provides the following technical solutions: A hot pressing device for producing LCD screens, comprising a base, a bracket provided on the base, a cylinder provided above the bracket, an output end of the cylinder passing through the upper surface of the bracket and connected to a connecting element, a hot pressing element connected below the connecting element, and a heat preservation module and a heat dissipation module provided inside the hot pressing element;

[0006] The lower surface of the hot pressing element is provided with annularly arranged blind grooves, the heat preservation module comprises a plurality of springs arranged in the blind grooves, the lower end of the spring is fixedly connected with a heat preservation frame, one side of the heat preservation frame is provided with a shaft rod, the shaft rod is wound with a heat preservation film, the movable end of the heat preservation film passes through one side of the heat preservation frame and is fixedly connected with a film rod, both ends of the film rod are bound with connecting lines, the other ends of the connecting lines are wound with spools, the shaft rod and the spool are respectively connected with a power source, the shaft rod is wound with the heat preservation film when rotating, and the spool is wound with the connecting line to expand the heat preservation film when rotating.

[0007] The hot pressing element is provided with a central cavity and an outer ring cavity, the heat dissipation module comprises a sliding plate slidingly connected in the central cavity, the sliding plate is connected with an inner frame, the outer side of the inner frame is provided with an outer frame, the hot pressing element and the outer frame are both provided with two rows of ventilation holes, two rows of matching holes are correspondingly provided below the ventilation holes on the inner frame, a micro fan is arranged in each ventilation hole in the lower row, when the hot pressing element is overheated, the gas in the central cavity is heated and expanded to push the sliding plate to drive the inner frame to move upward, the ventilation holes and the matching holes are communicated, the micro fan is started to pass cold air into the central cavity, and hot air is discharged from the upper row of communicated holes.

[0008] The heat preservation frame is matched with the blind groove, opposite edges of the lower surface of the heat preservation frame are both provided with long grooves, the connecting lines pass through the long grooves to connect the opposite shaft rods and spools.

[0009] The end of the shaft rod is connected with a coupling, the other end of the coupling is connected with a motor, the motor serves as the power source of the shaft rod, the motor is fixedly connected with a motor cover, and the motor cover is fixedly installed on the heat preservation frame.

[0010] The two spools are jointly connected with a double-shaft motor, the double-shaft motor serves as the power source of the spool, the double-shaft motor is fixedly connected with a motor frame, and the motor frame is fixedly installed on the heat preservation frame.

[0011] The sliding plate is glued with a plurality of connecting plates around, the connecting plates are provided with elastic columns above, the other end of the connecting plates is jointly glued with an inner frame, and the sliding plate and the connecting plate are connected through the connecting plate.

[0012] The connecting element comprises a connecting plate, the output end of the air cylinder is fixedly connected with the connecting plate, the lower side of the connecting plate is fixedly connected with a heat insulation plate, and the lower side of the heat insulation plate is fixedly connected with the hot pressing element.

[0013] The application further discloses that the inner part of the central cavity is provided with a heating element, and the upper cover is connected to the heating element in a buckling mode.

[0014] The application further discloses that the fixed table is slidably connected with a sliding plate, the sliding plate is in a "convex" structure, the fixed table and the sliding plate are designed to be matched with each other in shape, the two lower sides of the "convex" sliding plate are truncated, and each truncated surface is fixedly connected with an elastic rod, and the other end of each elastic rod extends backward and is fixedly connected to the inner side of the support.

[0015] The application further discloses that four guide columns are further fixedly arranged on the support, and the four guide columns sequentially pass through the four corner positions of the fixed table, the connecting element and the hot-pressing element upward until the upper surface of the support.

[0016] In the second aspect of the application, a hot-pressing method of the hot-pressing device for producing the LCD liquid crystal display screen is provided, and the hot-pressing method comprises the following steps: the elastic rods are elongated to push the sliding plate to slide outward, it is worth noting that when the elastic rods are elongated to the longest distance, the two lower sides of the "convex" sliding plate have not completely slid out of the fixed table, the LCD liquid crystal display screen to be hot-pressed is placed on the sliding plate, then the elastic rods are retracted to drive the sliding plate to slide inward to the initial position, the air cylinder is started to drive the hot-pressing element to move downward through the connecting element, the heating element is started to heat the hot-pressing element, when the hot-pressing element moves downward, the heat preservation frame first contacts the upper surface of the sliding plate, the hot-pressing element continues to move downward, the sliding plate and the two sets of power systems fixedly connected to the sliding plate are retracted into the blind groove in the lower surface of the sliding plate due to the compression of the spring, until the lower surface of the hot-pressing element is tightly attached to the LCD liquid crystal display screen to be hot-pressed, hot-pressing work is performed, after the hot-pressing work is completed, the air cylinder drives the hot-pressing element to move upward to the initial position through the connecting element, and the hot-pressing work is completed.

[0017] To ensure that the hot pressing element sequentially hot pressing LCD liquid crystal display screen, the temperature does not drop rapidly in the process of rising and waiting for material change, the cylinder drives the hot pressing element to move upwards, the motor is closed, the double shaft motor is started to drive two wire shafts to rotate at the same time, the connecting line is wound, the connecting line pulls the film rod to move towards the wire shaft, the heat preservation film is laid on the hot pressing element between the heat preservation frame, and the heat preservation film is laid on the hot pressing element between the heat preservation frame, and the heat preservation film is laid on the hot pressing element between the heat preservation frame. The heat insulation and heat preservation effect is realized, the cylinder drives the hot pressing element to move downwards, the double shaft motor is closed, the motor is started to drive the shaft to rotate through the shaft, the connecting line is wound, the connecting line pulls the film rod to move towards the shaft, the heat preservation film is wound, and the hot pressing element continues to move downwards to complete the hot pressing work on the LCD liquid crystal display screen below.

[0018] When the temperature inside the hot pressing element is too high, the gas in the center cavity expands under heat to push the sliding plate to extrude the elastic column to move upwards. It is worth noting that the gas expands under heat when the temperature in the center cavity is too high to push the sliding plate to extrude the elastic column. Then, the ventilation hole and the matching hole are communicated, the sliding plate drives the inner frame to slide to the highest position, the ventilation hole and the matching hole are completely overlapped, the micro fan is started, cold air is introduced into the center cavity, and hot air is discharged from the hole communicated with the upper exhaust, the higher the temperature inside the center cavity, the larger the communication channel of the ventilation hole and the matching hole, the faster the efficiency of the air exchange inside the center cavity, until the hot pressing element is effectively cooled, the volume of the gas in the center cavity is reduced, and the sliding plate drives the inner frame to extrude the elastic column to move downwards to the initial position.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] (1) By setting the motor to be closed, the double shaft motor is started to drive two wire shafts to rotate at the same time, the connecting line is wound, the connecting line pulls the film rod to move towards the wire shaft, and the heat preservation film is laid on the hot pressing element between the heat preservation frame, so as to realize the heat insulation and heat preservation effect of the hot pressing element.

[0021] (2) through the setting of the central cavity gas heated expansion push the slide plate with the inner frame extrusion of the elastic column upward, the vent hole and the matching hole communication, and the slide plate with the inner frame sliding to the highest position when the vent hole and the matching hole completely coincide, the micro fan starts, the cold air through the central cavity, while the hot air from the upper row of the hole, the central cavity inside temperature is higher, the vent hole and the matching hole coincides with the channel is larger, the central cavity inside ventilation efficiency is faster, until the thermal pressure element effective cooling, the central cavity gas volume shrinkage, the slide plate with the inner frame extrusion of the elastic column downward to the initial position, forming an effective heat dissipation cycle, realize the heat dissipation work to the thermal pressure element. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and are meant to explain the present application and are not intended to limit the application. In the drawings:

[0023] Figure 1 is the overall structure schematic diagram of the embodiment of the present application;

[0024] Figure 2 is the overall structure sectional view of the embodiment of the present application;

[0025] Figure 3 is the A area enlarged view of the embodiment of the present application;

[0026] Figure 4 is the slide plate connecting inner frame schematic diagram of the embodiment of the present application;

[0027] Figure 5 is the B area enlarged view of the embodiment of the present application;

[0028] Figure 6 is the slide plate part connection schematic diagram of the embodiment of the present application;

[0029] Figure 7 is the heat preservation module drive part structure schematic diagram of the embodiment of the present application;

[0030] Figure 8 is the C area part top view of the embodiment of the present application;

[0031] Figure 9 is the D area part top view of the embodiment of the present application;

[0032] Figure 10 is the slide plate connecting telescopic rod schematic diagram of the embodiment of the present application;

[0033] Figure 11 is the vent hole and the matching hole schematic diagram of the embodiment of the present application

[0034] In the figure: 1, base; 2, support; 3, air cylinder; 4, connecting element; 41, connecting plate; 42, heat insulation plate; 5, hot pressing element; 50, upper cover; 51, central cavity; 52, outer ring cavity; 53, blind groove; 54, heating element; 6, heat preservation module; 60, heat preservation film; 601, film rod; 61, spring; 62, heat preservation frame; 621, long groove; 63, motor cover; 64, motor; 65, shaft coupling; 66, shaft rod; 67, motor frame; 68, double-shaft motor; 681, connecting wire; 69, spool; 7, heat dissipation module; 71, sliding plate; 72, connecting plate; 73, elastic column; 74, inner frame; 75, outer frame; 76, ventilation hole; 77, matching hole; 78, micro fan; 8, fixing table; 9, alignment column; 10, sliding plate; 11, telescopic rod. DETAILED DESCRIPTION

[0035] The technical solutions of the present application will be further described in detail below with reference to preferred embodiments and drawings thereof. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] Reference Figures 1 to 11 , the embodiment of the present application provides a hot pressing device and method for LCD liquid crystal display screen production, Figure 1 The overall structure schematic diagram of the embodiment of the present application is shown in FIGS. Figure 1 and Figure 2 The hot pressing device and method for LCD liquid crystal display screen production comprises a base 1, a support 2 is arranged on the base 1, an air cylinder 3 is arranged above the support 2, a connecting element 4 is connected to the output end of the air cylinder 3 through the upper surface of the support 2, a hot pressing element 5 is connected below the connecting element 4, and a heat preservation module 6 and a heat dissipation module 7 are arranged in the hot pressing element 5. The air cylinder 3 is used as a power source to drive the connecting element 4 and the hot pressing element 5 to complete the ascending and descending movement work.

[0037] As shown in FIGS. Figure 3 The lower surface of the hot pressing element 5 is provided with a blind groove 53 arranged in a ring shape, the heat preservation module 6 comprises a plurality of springs 61 arranged in the blind groove 53, the lower end of the spring 61 is fixedly connected with a heat preservation frame 62, and the heat preservation frame 62 is matched with the blind groove 53. As shown in FIGS. Figure 7 and Figure 8As shown, the heat preservation frame 62 is provided with a shaft rod 66, the shaft rod 66 is connected with the heat preservation film 60, the movable end of the heat preservation film 60 is connected with the film rod 601, the two ends of the film rod 601 are connected with the connecting line 681, and the other end of the connecting line 681 is connected with the wire shaft 69. The shaft rod 66 and the wire shaft 69 are connected with the power source, the shaft rod 66 is rotated to wind the heat preservation film 60, and the wire shaft 69 is rotated to expand the heat preservation film 60 by winding the connecting line 681.

[0038] As shown in Figure 3 The heat pressing element 5 is provided with a central cavity 51 and an outer ring cavity 52, the heat dissipation module 7 comprises a sliding plate 71 connected in the central cavity 51, the sliding plate 71 is connected with an inner frame 74, and the outer side of the inner frame 74 is provided with an outer frame 75. Figure 5 And Figure 11 The heat pressing element 5 and the outer frame 75 are provided with two rows of ventilation holes 76, the inner frame 74 is provided with two rows of matching holes 77 corresponding to the lower side of the ventilation holes 76, and the lower row of ventilation holes 76 is provided with a micro fan 78. When the temperature in the heat pressing element 5 is too high, the gas in the central cavity 51 is heated and expanded to drive the sliding plate 71 to move upwards, the ventilation holes 76 and the matching holes 77 are communicated, the micro fan 78 is started to suck cold air into the central cavity 51 through the channel, and the heated hot air is discharged from the upper communicated ventilation holes 76 and the matching holes 77, forming an effective heat dissipation cycle.

[0039] In some preferred embodiments, as shown in Figure 7 And Figure 8 The lower surface of the heat preservation frame 62 is provided with long grooves 621 on the opposite sides, and the connecting lines 681 are connected with the shaft rods 66 and the wire shafts 69 on the opposite sides.

[0040] In some preferred embodiments, as shown in Figure 7 One end of the shaft rod 66 is connected with a shaft coupling 65, the other end of the shaft coupling 65 is connected with a motor 64, the motor 64 is used as the power source of the shaft rod 66, the motor 64 is fixedly connected with a motor cover 63, and the motor cover 63 is fixedly installed on the heat preservation frame 62. The motor 64 is used as the power source, when the motor 64 is started to drive the shaft rod 66 to rotate through the shaft coupling 65, the connecting lines 681 are wound to move the film rod 601 to the side of the heat preservation frame 62 until the film rod 601 is close to the heat preservation frame 62, and the winding work of the heat preservation film 60 is completed.

[0041] In some preferred embodiments, as shown in Figure 7 and Figure 9 two said spool 69 between the common connection of a double shaft motor 68, said double shaft motor 68 as the power source of said spool 69, said double shaft motor 68 is fixedly connected with the motor bracket 67, said motor bracket 67 is fixedly installed on the heat preservation frame 62. Said double shaft motor 68 as power source, said double shaft motor 68 drive two said spool 69 rotate at the same time through winding said connecting line 681, said connecting line 681 traction film rod 601 to the direction of said spool 69 moves close to the other side of the heat preservation frame 62, make the heat preservation film 60 spread on the heat pressing element 5 between said heat preservation frame 62, play a role in heat insulation of heat pressing element 5 work.

[0042] In some alternative embodiments, as shown in Figure 3 the design of said blind groove 53 can be said shaft 66 and said spool 69 and its respective connection of the overall structure of the power source to avoid.

[0043] In some preferred embodiments, as shown in Figure 4 and Figure 6 said slide plate 71 around the glue plate 72, the upper part of said connecting plate 72 is provided with elastic column 73, the other end of said connecting plate 72 is commonly glued with inner frame 74, said slide plate 71 and said connecting plate 72 are connected through said connecting plate 72. The groove is set up in the heat pressing element 5, which is suitable for the connecting plate 72 to slide up and down along the groove. The elastic column 73 is a component that can provide cushioning. When the temperature of the center cavity 51 is too high, the gas heated and expanded can push the slide plate 71 to extrude the elastic column 73. When the temperature in the center cavity 51 is too high, the gas heated and expanded can push the slide plate 71 to move and trigger the heat dissipation mechanism by extruding the elastic column 73. The heat dissipation module 7 is simple and effective, which can automatically respond to temperature changes and protect the equipment from overheating damage without external power supply or complex control system.

[0044] In some preferred embodiments, as shown in Figure 2 said connecting element 4 includes connecting plate 41, the output end of said cylinder 3 and said connecting plate 41 fixedly connected, the lower part of said connecting plate 41 is fixedly connected with heat insulation plate 42, the lower part of said heat insulation plate 42 and said heat pressing element 5 is fixedly connected. The heat insulation plate 42 is a component for reducing heat transfer. The heat insulation plate 42 is fixedly connected below the connecting plate 41, which mainly plays a role in isolating the connecting plate 41 and the cylinder 3 from the heat of the heat pressing element 5.

[0045] In some preferred embodiments, as shown in Figure 3As shown, the inside of the center cavity 51 is provided with a heating element 54, and the upper cover 50 is buckled and connected on the hot pressing element 5. The heating element 54 can generate heat and transfer heat to the hot pressing element 5, thereby performing the hot pressing work of the LCD liquid crystal display screen.

[0046] In certain preferred embodiments, as shown in Figure 1 and Figure 10 As shown, the bracket 2 is fixedly provided with a fixed table 8, and the fixed table 8 is slidably connected with a sliding plate 10. The sliding plate 10 is a "convex" structure, and the fixed table 8 and the sliding plate 10 are designed to be compatible in shape. The two low sides of the "convex" are truncated at the back, and each truncated surface is fixedly connected with an extension rod 11. The other end of each extension rod 11 extends backward and is fixedly connected to the inner side of the bracket 2. The extension rod 11 acts as a power source. When the extension rod 11 is extended, it pushes the sliding plate 10 to slide outward. It is worth noting that when the extension rod 11 is extended to the maximum distance, the two low sides of the "convex" of the sliding plate 10 have not completely slid out of the fixed table 8. The LCD liquid crystal display screen to be hot pressed is placed on the sliding plate 10, and then the extension rod 11 is retracted to drive the sliding plate 10 to slide inward to the initial position, thereby completing the feeding work of the LCD liquid crystal display screen to be hot pressed.

[0047] In certain preferred embodiments, as shown in Figure 1 As shown, the bracket 2 is also fixedly provided with four guide columns 9, and the four guide columns 9 all pass through the four corner positions of the fixed table 8, the connecting element 4 and the hot pressing element 5 in sequence upward until the upper surface of the bracket 2. The guide column 9 is used to ensure that the connecting element 4 and the hot pressing element 5 keep vertical during movement.

[0048] In the above embodiment, the heat pressing method of the heat pressing device for LCD liquid crystal display screen production comprises: the telescopic rod 11 is extended to push the sliding plate 10 to slide outwards, the LCD liquid crystal display screen to be heat pressed is placed on the sliding plate 10, then the telescopic rod 11 is retracted to drive the sliding plate 10 to slide inwards to the initial position, the air cylinder 3 is started to drive the heat pressing element 5 downwards through the connecting element 4, the heating element 54 is started to heat the heat pressing element 5, when the heat pressing element 5 moves downwards, the heat preservation frame 62 first contacts the upper surface of the sliding plate 10, the heat pressing element 5 continues to move downwards, the spring 61 is compressed to make the sliding plate 10 and the two sets of power systems fixedly connected thereto retract into the blind groove 53 in the lower surface of the sliding plate 10, until the lower surface of the heat pressing element 5 is tightly attached to the LCD liquid crystal display screen to be heat pressed, heat pressing work is performed, after the heat pressing work is completed, the air cylinder 3 drives the heat pressing element 5 to move upwards to the initial position through the connecting element 4, and the heat pressing work is completed.

[0049] In order to ensure that the temperature does not decrease rapidly during the work of rising and waiting for material replacement when the heat pressing element 5 heat presses the LCD liquid crystal display screen in sequence, during the upward movement of the heat pressing element 5 driven by the air cylinder 3, the electric motor 64 is closed, the double-shaft motor 68 is started to drive the two wire spools 69 to rotate at the same time, the connecting wire 681 is wound, the connecting wire 681 pulls the film rod 601 to move towards the wire spool 69, the heat preservation film 60 is unfolded and laid on the heat pressing element 5 between the heat preservation frames 62, and a heat insulation and heat preservation effect is achieved. During the downward movement of the heat pressing element 5 driven by the air cylinder 3, the double-shaft motor 68 is closed, the electric motor 64 is started to drive the shaft rod 66 to rotate through the shaft coupling 65, the connecting wire 681 is wound, the connecting wire 681 pulls the film rod 601 to move towards the shaft rod 66, the heat preservation film 60 is wound, and the heat pressing element 5 continues to move downwards to complete the heat pressing work on the LCD liquid crystal display screen to be heat pressed below. It is worth noting that the complete unfolding and complete winding work of the heat preservation film 60 can be completed between the upward movement and the downward movement of the heat pressing element 5 to the target position.

[0050] When the temperature inside the hot pressing element 5 is too high, the gas in the center cavity 51 expands under the heat and pushes the sliding plate 71 to drive the inner frame 74 to press the elastic column 73 to move upward, then the ventilation hole 76 and the matching hole 77 are connected, when the sliding plate 71 drives the inner frame 74 to slide to the highest position, the ventilation hole 76 and the matching hole 77 are completely overlapped, the micro fan 78 starts to work, the cold air is passed into the center cavity 51, and the hot air is passed out from the hole connected with the upper exhaust, the higher the temperature inside the center cavity 51, the larger the channel of the ventilation hole 76 and the matching hole 77, so that the efficiency of the air exchange inside the center cavity 51 is faster, until the hot pressing element 5 is effectively cooled, the volume of the gas in the center cavity 51 is reduced, the sliding plate 71 drives the inner frame 74 to press the elastic column 73 to move downward to the initial position, so as to complete the cooling work of the hot pressing element 5.

[0051] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, 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.

[0052] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hot pressing device for producing LCD liquid crystal display screens, comprising a base, characterized in that: A bracket is provided on the base, a cylinder is provided above the bracket, an output end of the cylinder is connected to a connecting element through the upper surface of the bracket, a hot pressing element is connected below the connecting element, and a heat preservation module and a heat dissipation module are provided inside the hot pressing element; The heat preservation module includes a heat preservation frame, a shaft is provided on one side of the heat preservation frame, a heat preservation film is wound on the shaft, the movable end of the heat preservation film passes through one side of the heat preservation frame and is fixedly connected to the film rod, both ends of the film rod are tied with a connecting wire, the other end of the connecting wire is wound and connected to a spool, and the shaft and the spool are respectively connected to a power source; A central cavity is provided on the hot pressing element, and the heat dissipation module includes a slide plate slidably connected to the central cavity, an inner frame is connected to the outer side of the slide plate, and an outer frame is provided on the outer side of the inner frame. Two rows of ventilation holes are provided in the hot pressing element and the outer frame, and two rows of matching holes are provided on the inner frame directly below the ventilation holes, and a micro fan is provided in each ventilation hole in the lower row.

2. A hot pressing device for producing LCD liquid crystal display screens according to claim 1, characterized in that: A blind groove arranged in an annular manner is provided on the lower surface of the hot pressing element, and the insulation module includes a plurality of springs arranged in the blind groove. The springs are located above the insulation frame and the two are fixedly connected. The insulation frame is adapted to the blind groove, and long grooves are provided on two opposite sides of the lower surface of the insulation frame. The connecting line passes through the long groove and connects the shaft rod and the spool on the other two opposite sides.

3. A hot pressing device for producing LCD liquid crystal display screens according to claim 2, characterized in that: One end of the shaft is connected to a coupling, and the other end of the coupling is connected to a motor. The motor serves as a power source for the shaft. The motor is fixedly connected to a motor sleeve, and the motor sleeve is fixedly mounted on the insulation frame.

4. A hot pressing device for producing LCD liquid crystal display screens according to claim 3, characterized in that: A double-shaft motor is commonly connected between the two bobbins, and the double-shaft motor serves as a power source for the bobbins. The double-shaft motor is fixedly connected to a motor frame, and the motor frame is fixedly mounted on the insulation frame.

5. A hot pressing device for producing LCD liquid crystal display screens according to claim 4, characterized in that: The skateboard is glued with several connecting plates around it, elastic columns are provided above the connecting plates, and the other ends of the connecting plates are glued with inner frames. The skateboard and the connecting plates are connected through the connecting plates, and an outer ring cavity is opened on the hot pressing element, and the inner frame and the outer frame are both located in the outer ring cavity.

6. A hot pressing device for producing LCD liquid crystal display screens according to claim 5, characterized in that: The connecting element includes a connecting plate, the output end of the cylinder is fixedly connected to the connecting plate, a heat insulation plate is fixedly connected below the connecting plate, and the heat insulation plate is fixedly connected to the hot pressing element below.

7. A hot pressing device for producing LCD liquid crystal display screens according to claim 6, characterized in that: A heating element is provided inside the central cavity, and an upper cover is buckled and connected to the hot pressing element.

8. A hot pressing device for producing LCD liquid crystal display screens according to claim 7, characterized in that: A fixed platform is fixedly provided on the bracket, and a sliding plate is slidably connected to the fixed platform. The sliding plate is a "convex" shaped structure, and the fixed platform is adapted to the shape design of the sliding plate. The rear sides of the relatively low "convex" side of the sliding plate are truncated, and the two section surfaces are fixedly connected to a telescopic rod, and the other end of each telescopic rod extends backward and is fixedly connected to the inner side of the bracket.

9. A hot pressing device for producing LCD liquid crystal display screens according to claim 8, characterized in that: Four guiding columns are also fixedly provided on the bracket, and the four guiding columns all pass through the four corners of the fixing platform, the connecting element and the hot pressing element in sequence upward to the upper surface of the bracket.

10. A hot pressing method for a hot pressing device for producing LCD liquid crystal display screens according to claim 9, characterized in that: include: The telescopic rod is extended to push the sliding plate to slide outward, and the LCD screen to be hot-pressed is placed on the sliding plate. Then, the telescopic rod is retracted to drive the sliding plate to slide inward to the initial position, and the cylinder is started to drive the hot-pressing element downward through the connecting element, and the heating element is started to heat the hot-pressing element. When the hot-pressing element moves downward, the heat-insulating frame first contacts the upper surface of the sliding plate, and the hot-pressing element continues to move downward, and the spring is compressed to cause the sliding plate and the two power systems fixedly connected thereto to retract into the blind groove on the lower surface of the sliding plate until the lower surface of the hot-pressing element is tightly fitted with the LCD screen to be hot-pressed, and the hot-pressing work is performed. After the hot-pressing work is completed, the cylinder drives the hot-pressing element to move upward to the initial position through the connecting element, and the hot-pressing work is completed. In which, when the cylinder drives the hot pressing element to move upward, the motor is turned off, and when the double-axis motor is started to drive the two spools to rotate simultaneously, the connecting line is wound up, and the connecting line pulls the film rod to move toward the spool, so that the thermal insulation film is unfolded and laid on the hot pressing element between the thermal insulation frames; when the cylinder drives the hot pressing element to move downward, the double-axis motor is turned off, and when the motor is started to drive the shaft to rotate through the coupling, the connecting line is wound up, and the connecting line pulls the film rod to move toward the shaft, completing the winding of the thermal insulation film, and the hot pressing element continues to move downward to complete the hot pressing work of the LCD liquid crystal display screen to be hot pressed below; When the temperature inside the hot pressing element is too high, the gas in the central cavity expands due to the heat, pushing the slide plate to drive the inner frame to squeeze the elastic column and move upward, and then the ventilation hole and the matching hole are connected. When the slide plate drives the inner frame to slide to the highest position, the ventilation hole and the matching hole completely overlap, and the micro fan starts to pass cold air into the central cavity, while hot air passes out from the upper row of connected holes. The higher the temperature inside the central cavity, the larger the channel where the ventilation hole and the matching hole overlap and connect, and the faster the ventilation efficiency inside the central cavity, until the hot pressing element is effectively cooled, the volume of the gas in the central cavity is reduced, and the slide plate drives the inner frame to squeeze the elastic column and move downward to the initial position.

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