Light guide plate hot press molding device and molding method

Abstract

The application discloses a light guide plate hot-pressing forming device, which comprises a device main body, a gas cylinder is embedded in the top of the device main body, the output end of the gas cylinder is fixedly connected with a pressing plate, the bottom of the pressing plate is fixedly connected with a hot-pressing base plate, a processing groove is formed in the processing seat of the device main body, a bottom plate is movably installed in the processing groove, and a light guide plate is placed on the top of the bottom plate, a cavity is formed in the processing seat of the device main body, and the device further comprises a synchronous mechanism, an auxiliary assembly, a limiting assembly and a secondary limiting assembly. When the bottom plate is lifted to the top of the groove of the processing groove, the gear frame is not engaged with the gear, the pressing plate is continuously lifted by the gas cylinder, the hot-pressing base plate fixed to the bottom of the pressing plate is separated from the surface of the light guide plate, the light guide plate can be taken out, and the staff does not need to put both hands into the processing groove to take out the finished light guide plate, so that the operation is more convenient.

Description

Technical Field

[0001] This invention relates to the field of hot pressing forming equipment, and specifically to a hot pressing forming equipment and forming method for a light guide plate. Background Technology

[0002] A light guide plate is an optical element that conducts and distributes light evenly, typically made of highly transparent polymer materials. Light guide plates are widely used in various applications, such as display backlights, lighting equipment, and billboards. Their advantages include effectively improving light source utilization, resulting in clearer and softer display effects, energy saving, and environmental friendliness. In short, light guide plates have a very wide range of applications; they not only improve product quality and reduce energy consumption but also provide softer, higher-definition, and higher-contrast display and lighting effects for various occasions. During the manufacturing process, light guide plates require pressing and flattening.

[0003] A Chinese patent publication number (CN215320585U) discloses a hot press for producing light guide plates. The press includes a mechanical body with a hot press table. The hot press table has a concave hot press groove on its surface, and an anti-slip pad is laid at the bottom of the groove. Multiple freely retractable clamping rods are embedded inside the groove. Multiple cylinders corresponding to the clamping rods are connected to the outside of the hot press table. A hot press substrate matching the hot press groove is suspended above the hot press table. An electrical connector is fixedly connected above the hot press substrate, and a freely retractable telescopic rod is connected above the connector. Support frames fixed to both sides of the hot press table are connected above the telescopic rod. The light guide plate is placed in the hot press groove, and the clamping rods, controlled by cylinders on the side, clamp the light guide plate. The anti-slip pad at the bottom further enhances the stability of the light guide plate's position, preventing displacement during hot pressing.

[0004] The above-mentioned light guide plate hot pressing forming machine still has the following problems when in use: After the above-mentioned light guide plate hot pressing forming is completed, the operator needs to use both hands to enter the hot pressing tank to take out the hot pressing formed light guide plate. The hot pressing tank is relatively deep, and there is a certain danger when the operator takes out the light guide plate.

[0005] Therefore, it is necessary to invent a light guide plate hot pressing forming device and forming method to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a light guide plate hot pressing forming device and forming method to solve the problem mentioned in the background art that after the light guide plate hot pressing forming process is completed, the operator needs to use both hands to enter the hot pressing tank to take out the hot-pressed light guide plate. The hot pressing tank is relatively deep, and there is a certain degree of danger when the operator takes out the light guide plate.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a light guide plate hot pressing forming device, comprising a device body, a cylinder embedded in the top of the device body, a pressure plate fixedly connected to the output end of the cylinder, and a hot pressing substrate fixedly connected to the bottom of the pressure plate; a processing groove is formed inside the processing seat of the device body, a base plate is movably installed inside the processing groove, and a light guide plate is placed on top of the base plate; a cavity is formed inside the processing seat of the device body, and further comprising:

[0008] The synchronization mechanism includes a rotating shaft 1 and a rotating shaft 2 rotatably connected to the inner wall of the cavity via bearings. A gear 3 from a gear set is fixedly sleeved on the outer wall of the rotating shaft 1, and a gear 1 and a gear 2 from the gear set are fixedly sleeved on the outer wall of the rotating shaft 2. The gear 2 and the gear 3 are meshed together. A vertical plate is fixedly connected to the bottom of the base plate, and a toothed block is fixedly connected to the outer wall of the vertical plate. The toothed block is meshed with the gear 3. A toothed frame is fixedly connected to the bottom of the pressure plate, and the toothed frame is meshed with the gear 1.

[0009] The auxiliary component has a T-shaped block fixedly connected to the side wall of the vertical plate, and the end of the T-shaped block slides in a groove reserved inside the main body of the device.

[0010] The limiting component has a notch inside the base plate, and a slider is slidably connected to the inner wall of the notch by a spring.

[0011] The secondary limiting component has a U-shaped plate fixedly connected to the top of the slider, and a movable plate is movably connected to the inner wall of the U-shaped plate through a spring. A short rod is movably sleeved inside the movable plate, and the two sets of short rods are movably connected through a connecting rod.

[0012] Preferably, the vertical plates are symmetrically and fixedly connected to the bottom of the base plate, and a vertical strip-shaped toothed block is fixedly connected to the side wall of one of the vertical plates. Both the vertical plates and the toothed blocks can pass through the through hole connecting the bottom of the processing groove and the cavity.

[0013] Preferably, the upper end of the toothed frame is fixedly connected to the bottom of the pressure plate, and the lower end of the toothed frame extends through into the cavity. The lower end of the toothed frame is movably sleeved on the second rotating shaft and the outer ring of the first gear. A toothed block is provided in the middle section of the inner wall of one side of the toothed frame, and the toothed block on the inner wall of the toothed frame meshes with the first gear.

[0014] Preferably, the two notches are symmetrically opened inside the base plate, and the side wall of the "T"-shaped slider is in contact with and slidably connected to the inner wall of the notch, and the two ends of the spring are respectively fixedly connected to the end of the slider and the inner wall of the notch.

[0015] Preferably, the two ends of the two sliders with a large distance between them are fixedly connected to a U-shaped plate, the two ends of the second spring are fixedly connected to the bottom of the movable plate and the inner wall of the U-shaped plate respectively, and the two ends of the movable plate are in contact with and slidably connected to the two side walls of the processing groove.

[0016] Preferably, the movable plate has a three-sided open channel, and two sets of four symmetrical short rods and a protrusion fixedly connected to the top of one end of the short rods are in contact with and slidably connected to the inner wall of the channel.

[0017] Preferably, each of the two symmetrical short rods has a second groove, and the outer walls of both ends of a connecting rod are fitted and slidably connected to the inner walls of the two pre-set second grooves in the two symmetrical short rods.

[0018] The present invention also provides a method for using a light guide plate hot pressing forming device, which specifically includes the following steps:

[0019] Step 1: Placement of the light guide plate. Move the two U-shaped plates. Under the action of the spring, the U-shaped plates will abut against the two side walls of the light guide plate. Move the position of the short rods so that the side walls of the two sets of short rods contact the other two end side walls of the light guide plate, which will limit the position of the light guide plate.

[0020] Step 2: Hot pressing and forming. The cylinder is activated. The cylinder descends, causing the pressure plate, the hot pressing substrate and the toothed frame fixedly connected to the bottom of the pressure plate to descend. After the hot pressing substrate contacts the light guide plate, the toothed frame meshes with gear 1. Under the action of multiple sets of gears and tooth blocks, the pressure plate descends, causing the bottom plate to descend. When the bottom plate descends to the bottom of the processing groove, the toothed frame does not mesh with gear 1. The cylinder continues to descend, causing the hot pressing substrate to descend continuously, and hot pressing the light guide plate placed on the bottom plate is formed.

[0021] Step 3: Remove the processed light guide plate, start the cylinder to drive the pressure plate to rise, and the bottom plate rises under the gear drive until the bottom plate rises so that the light guide plate protrudes from the top of the groove of the processing slot. At this point, the gear frame is no longer engaged with the gear. The cylinder continues to drive the pressure plate to rise, and the hot-pressed substrate fixed at the bottom of the pressure plate leaves the surface of the light guide plate. Only then can the light guide plate be removed.

[0022] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0023] 1. The cylinder is activated, which drives the pressure plate and the hot-pressing substrate fixed to the bottom of the pressure plate to descend. After the hot-pressing substrate contacts the light guide plate, the gear frame and gear 1 are engaged. Under the action of multiple gears and gear blocks, the pressure plate descends, driving the bottom plate to descend. When the bottom plate descends to the bottom of the processing groove, the gear frame is no longer engaged with gear 1. The cylinder drives the hot-pressing substrate to continue descending, so that the light guide plate placed on the bottom plate can be hot-pressed and formed. When it is necessary to remove the formed light guide plate, the cylinder drives the pressure plate to rise. Under the gear drive, the bottom plate rises until the bottom plate rises so that the light guide plate protrudes from the top of the groove of the processing groove. At this time, the gear frame is no longer engaged with gear 1. The cylinder continues to drive the pressure plate to rise. The hot-pressing substrate fixed at the bottom of the pressure plate leaves the surface of the light guide plate, so that the light guide plate can be removed. In this way, the operator does not need to reach into the processing groove with both hands to remove the processed light guide plate, nor does it require an additional power source to remove the light guide plate, making the operation more convenient.

[0024] 2. Move the two U-shaped plates to make them abut against the two side walls of the light guide plate. Move the position of the short rods so that the side walls of the two sets of short rods contact the other two end side walls of the light guide plate. At this time, the position of the light guide plate is limited, preventing the light guide plate from shifting during hot pressing.

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0026] Figure 1 This is a perspective view of the overall structure of the present invention;

[0027] Figure 2 This is a perspective view of the overall structure of the present invention (partial cross-section of the main body of the device);

[0028] Figure 3 This is an exploded view of the limiting component of the present invention;

[0029] Figure 4 This is an exploded view of the limiting components (movable plate and U-shaped plate in partial cross-section) of the present invention;

[0030] Figure 5 This is a perspective view of the overall structure of the present invention (excluding the main body of the device);

[0031] Figure 6 This is a perspective view of the connection structure of the synchronization mechanism of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Main body of the device; 2. Cylinder; 3. Pressure plate; 4. Hot pressing base plate; 5. Processing groove; 6. Base plate; 7. Cavity; 8. Synchronization mechanism; 81. Rotating shaft one; 82. Rotating shaft two; 83. Gear set; 831. Gear one; 832. Gear two; 833. Gear three; 84. Vertical plate; 85. Gear block; 86. Gear frame; 9. Auxiliary components; 91. T-block; 92. Slide groove; 10. Limiting component; 101. Notch; 102. Slider; 103. Spring one; 104. Secondary limiting component; 1041. U-shaped plate; 1042. Movable plate; 1043. Spring two; 1044. Channel one; 1045. Short rod; 1046. Connecting rod; 1047. Channel two; 11. Light guide plate. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] This invention provides, for example Figure 1-6 The illustrated light guide plate hot pressing forming apparatus includes a main body 1, a cylinder 2 embedded in the top of the main body 1, a pressure plate 3 fixedly connected to the output end of the cylinder 2, and a hot pressing substrate 4 fixedly connected to the bottom of the pressure plate 3. A processing groove 5 is formed inside the processing seat of the main body 1, and a base plate 6 is movably installed inside the processing groove 5. A light guide plate 11 is placed on top of the base plate 6. A cavity 7 is formed inside the processing seat of the main body 1. The apparatus also includes:

[0036] The synchronizing mechanism 8 has a cavity 7 with a rotating shaft 81 and a rotating shaft 82 rotatably connected to the inner wall via bearings. The outer wall of the rotating shaft 81 is fixedly sleeved with a gear 833 inside the gear set 83. The outer wall of the rotating shaft 82 is fixedly sleeved with a gear 831 and a gear 832 inside the gear set 83. The gear 832 and the gear 833 are meshed together. The bottom of the base plate 6 is fixedly connected with a vertical plate 84. The outer wall of the vertical plate 84 is fixedly connected with a tooth block 85. The tooth block 85 is meshed with the gear 833. The bottom of the pressure plate 3 is fixedly connected with a tooth frame 86. The tooth frame 86 is meshed with the gear 831.

[0037] Auxiliary component 9, the side wall of the vertical plate 84 is fixedly connected with a T-shaped block 91, and the end of the T-shaped block 91 slides in the groove 92 reserved inside the main body 1 of the device to ensure the stability of the vertical plate 84 when it rises and falls;

[0038] The limiting component 10 has a notch 101 inside the base plate 6, and the inner wall of the notch 101 is slidably connected to the slider 102 by a spring 103.

[0039] The secondary limiting component 104 has a U-shaped plate 1041 fixedly connected to the top of the slider 102, and a movable plate 1042 is movably connected to the inner wall of the U-shaped plate 1041 through a spring 1043. A short rod 1045 is movably sleeved inside the movable plate 1042, and the two sets of short rods 1045 are movably connected through a connecting rod 1046.

[0040] The vertical plates 84 are symmetrically and fixedly connected to the bottom of the base plate 6. One of the vertical plates 84 has a vertical strip-shaped toothed block 85 fixedly connected to its side wall. Both the vertical plate 84 and the toothed block 85 can pass through the through hole connecting the bottom of the machining groove 5 and the cavity 7, ensuring the space for the vertical plate 84 to move.

[0041] The upper end of the toothed frame 86 is fixedly connected to the bottom of the pressure plate 3, and the lower end of the toothed frame 86 extends through into the cavity 7. The lower end of the toothed frame 86 is movably sleeved on the second rotating shaft 82 and the outer ring of the first gear 831. A toothed block is provided in the middle section of the inner wall of one side of the toothed frame 86, and the toothed block on the inner wall of the toothed frame 86 meshes with the first gear 831. This facilitates the toothed frame 86 to mesh with the first gear 831 when it moves to the appropriate position, thereby driving the first gear 831 to rotate. In turn, the second gear 832 drives the third gear 833 to rotate, thus making the base plate 6 move synchronously.

[0042] Two notches 101 are symmetrically opened inside the base plate 6, and the side wall of the "T"-shaped slider 102 is in contact with and slidably connected to the inner wall of the notch 101. The two ends of the spring 103 are respectively fixedly connected to the end of the slider 102 and the inner wall of the notch 101, so that the movement of the slider 102 can be restricted by the U-shaped plate 1041.

[0043] The two ends of the two sliders 102, which are far apart, are fixedly connected to a U-shaped plate 1041. The two ends of the spring 1043 are fixedly connected to the bottom of the movable plate 1042 and the inner wall of the U-shaped plate 1041, respectively. The two ends of the movable plate 1042 are in contact with and slidably connected to the two side walls of the processing groove 5.

[0044] The movable plate 1042 has a three-sided open channel 1044 inside. Two sets of four symmetrical short rods 1045 and a protrusion fixedly connected to the top of one end of the short rods 1045 are in contact with and slidably connected to the inner wall of the channel 1044, so as to facilitate and stably adjust the short rods 1045 to limit the position of the remaining two side walls of the light guide plate 11.

[0045] Each of the two symmetrical short rods 1045 has a groove 1047. The outer walls of both ends of a connecting rod 1046 are fitted and slidably connected to the inner walls of the two grooves 1047 pre-set in the two symmetrical short rods 1045, ensuring that the use of multiple short rods 1045 is not affected during the movement of the slider 102.

[0046] The present invention also provides a method for using a light guide plate hot pressing forming device, which specifically includes the following steps:

[0047] Step 1: Placement of the light guide plate 11. Move the two U-shaped plates 1041. Under the action of the spring 103, the U-shaped plates 1041 are driven to abut against the two side walls of the light guide plate 11. Move the position of the short rods 1045 so that the side walls of the two sets of short rods 1045 contact the other two end side walls of the light guide plate 11, which limits the position of the light guide plate 11.

[0048] Step 2: Hot pressing and forming. Start cylinder 2. Cylinder 2 descends, driving the pressure plate 3 and the hot pressing substrate 4 and gear frame 86 fixedly connected to the bottom of the pressure plate 3 to descend. After the hot pressing substrate 4 contacts the light guide plate 11, the gear frame 86 meshes with gear 831. Under the action of multiple gears and gear blocks, the pressure plate 3 descends, driving the bottom plate 6 to descend. When the bottom plate 6 descends to the bottom of the processing groove 5, the gear frame 86 does not mesh with gear 831. Cylinder 2 continues to descend, driving the hot pressing substrate 4 to descend continuously, and hot pressing the light guide plate 11 placed on the bottom plate 6 is performed.

[0049] Step 3: Take out the processed light guide plate 11, start the cylinder 2 to drive the pressure plate 3 to rise, and under the gear transmission, the base plate 6 rises until the base plate 6 rises so that the light guide plate 11 protrudes from the top of the groove of the processing groove 5. At this point, the gear frame 86 is no longer engaged with the gear 831. The cylinder 2 continues to drive the pressure plate 3 to rise, and the hot-press base plate 4 fixed at the bottom of the pressure plate 3 leaves the surface of the light guide plate 11. Only then can the light guide plate 11 be taken out.

[0050] Working principle: Using a light guide plate hot pressing forming device, firstly, two U-shaped plates 1041 are moved to engage the light guide plate 11 between the two U-shaped plates 1041. Under the action of spring 103, the slider 102 causes the U-shaped plates 1041 to abut against the two side walls of the light guide plate 11. Then, the position of the short rod 1045 is adjusted, and the short rod 1045 is moved to move in the groove 1044 reserved inside the movable plate 1042. The position of the short rod 1045 is moved so that the side walls of the two sets of short rods 1045 contact the other two end side walls of the light guide plate 11. At this time, the position of the light guide plate 11 is defined.

[0051] After the light guide plate 11 is placed, the cylinder 2 is activated to descend. The cylinder 2 drives the pressure plate 3, which is fixedly connected to the output end of the cylinder 2, and the hot-pressing substrate 4, which is fixed to the bottom of the pressure plate 3, to descend. After the hot-pressing substrate 4 descends a certain distance, it comes into contact with the light guide plate 11. At this time, the toothed frame 86, which is fixedly connected to the bottom of the pressure plate 3, will mesh with the gear 1 831, causing the gear 1 831 to rotate. This, in turn, causes the rotating shaft 2 82, which is fixedly sleeved on the inner ring of the gear 1 831, to rotate. At this time, the gear 2 832, which is fixedly sleeved on the outer wall of the rotating shaft 2 82, rotates synchronously. The gear 2 832 meshes with the gear 3 833, which in turn meshes with the toothed block 85 fixed to the outer wall of the vertical plate 84 (see reference). Figure 6 (As indicated by the rotating arrow on the gear), according to the direction of gear meshing and rotation, the pressure plate 3 descends, and through the transmission of the synchronizing mechanism 8, it can synchronously drive the base plate 6 to descend (see reference). Figure 6 (In the direction indicated by the straight arrow in the middle), the light guide plate 11 placed on the top of the base plate 6 descends into the processing groove 5. After the base plate 6 reaches the deepest part of the processing groove 5, the tooth frame 86 is not engaged with the gear 831 at this time. The cylinder 2 continues to drive the pressure plate 3 to descend. The hot pressing substrate 4 fixed at the bottom of the pressure plate 3 hot presses the light guide plate 11 at this time. At the same time, the movable plate 1042 is movably connected to the U-shaped plate 1041. In this way, when the hot pressing substrate 4 moves downward and abuts against the movable plate 1042, the movable plate 1042 moves into the U-shaped plate 1041, which does not affect the hot pressing work of the hot pressing substrate 4 on the light guide plate 11 (the hot pressing process of the hot pressing substrate 4 in this article is the same as the use principle and process of the hot pressing substrate in the comparative patent, and will not be described in detail here).

[0052] After the hot pressing is completed, when the light guide plate 11 needs to be removed, the cylinder 2 is activated to rise, and the pressure plate 3 rises, driving the hot pressing substrate 4 to rise. Following the same operating steps, the gear frame 86 rises along with the pressure plate 3. The gear frame 86 meshes with gear one 831, causing gear one 831 to rotate, which in turn drives the rotating shaft two 82, which is fixedly sleeved on the inner ring of gear one 831, to rotate. At this time, gear two 832, which is fixedly sleeved on the outer wall of rotating shaft two 82, rotates synchronously. Gear two 832 meshes with gear three 833. Next, gear 3 833 meshes with the tooth block 85 fixed on the outer wall of vertical plate 84. According to the direction of gear meshing and rotation, pressure plate 3 rises, and the base plate 6 is driven to rise through the transmission of synchronous mechanism 8 until the light guide plate 11 placed on the base plate 6 protrudes from the top of the groove of processing groove 5. At this time, gear frame 86 does not mesh with gear 1 831. At this time, cylinder 2 continues to drive pressure plate 3 to rise. The hot pressing base plate 4 fixed at the bottom of pressure plate 3 leaves the surface of light guide plate 11, and light guide plate 11 can be taken out.

[0053] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A light guide plate hot pressing forming apparatus, comprising an apparatus body (1), characterized in that, The device body (1) has a cylinder (2) embedded in its top, and a pressure plate (3) is fixedly connected to the output end of the cylinder (2). A hot press base plate (4) is fixedly connected to the bottom of the pressure plate (3). A processing groove (5) is opened inside the processing seat of the device body (1), and a base plate (6) is movably installed inside the processing groove (5). A light guide plate (11) is placed on the top of the base plate (6). A cavity (7) is opened inside the processing seat of the device body (1). The device body (1) also includes: Synchronization mechanism (8), the inner wall of the cavity (7) is rotatably connected to a rotating shaft one (81) and a rotating shaft two (82) through bearings, and the outer wall of the rotating shaft one (81) is fixedly sleeved with a gear three (833) in the gear set (83), the outer wall of the rotating shaft two (82) is fixedly sleeved with a gear one (831) and a gear two (832) in the gear set (83), and the gear two (832) and the gear three (833) are meshed together, the bottom plate (6) is fixedly connected to a vertical plate (84), and the outer wall of the vertical plate (84) is fixedly connected to a tooth block (85), which is meshed with the gear three (833), and the bottom of the pressure plate (3) is fixedly connected to a tooth frame (86), which is meshed with the gear one (831); The auxiliary component (9) has a T-shaped block (91) fixedly connected to the side wall of the vertical plate (84), and the end of the T-shaped block (91) slides in the groove (92) reserved inside the main body (1) of the device. The limiting component (10) has a notch (101) inside the base plate (6), and the inner wall of the notch (101) is slidably connected to the slider (102) by a spring (103). The secondary limiting assembly (104) has a U-shaped plate (1041) fixedly connected to the top of the slider (102), and the inner wall of the U-shaped plate (1041) is movably connected to a movable plate (1042) through a spring (1043), and a short rod (1045) is movably sleeved inside the movable plate (1042), and the two sets of short rods (1045) are movably connected through a connecting rod (1046); The vertical plates (84) are symmetrically fixedly connected to the bottom of the base plate (6). A vertical strip-shaped toothed block (85) is fixedly connected to the side wall of one of the vertical plates (84). Both the vertical plate (84) and the toothed block (85) can pass through the through hole connecting the bottom of the processing groove (5) and the cavity (7). The upper end of the tooth frame (86) is fixedly connected to the bottom of the pressure plate (3), and the lower end of the tooth frame (86) extends through into the cavity (7). The lower end of the tooth frame (86) is movably sleeved on the outer ring of the rotating shaft (82) and the gear (831). A tooth block is provided in the middle section of the inner wall of one side of the tooth frame (86), and the tooth block on the inner wall of the tooth frame (86) meshes with the gear (831). Two notches (101) are symmetrically opened inside the base plate (6), and the side wall of the "T"-shaped slider (102) is in contact with and slidably connected to the inner wall of the notch (101), and the two ends of the spring (103) are fixedly connected to the end of the slider (102) and the inner wall of the notch (101) respectively.

2. The light guide plate hot pressing forming apparatus according to claim 1, characterized in that, The two sliders (102) are fixedly connected to the two ends of the sliders (1041) with a large distance between them. The two ends of the spring (1043) are fixedly connected to the bottom of the movable plate (1042) and the inner wall of the U-shaped plate (1041) respectively. The two ends of the movable plate (1042) are in contact with the two side walls of the processing groove (5) and are slidably connected.

3. The light guide plate hot pressing forming apparatus according to claim 1, characterized in that, The movable plate (1042) has a three-sided open channel (1044) inside. Two sets of four symmetrical short rods (1045) and a protrusion fixedly connected to the top of one end of the short rods (1045) are in contact with and slidably connected to the inner wall of the channel (1044).

4. The light guide plate hot pressing forming apparatus according to claim 3, characterized in that, A set of two symmetrical short rods (1045) each has a groove (1047) inside. The outer walls of both ends of a connecting rod (1046) are in contact with and slidably connected to the inner walls of the two grooves (1047) preset in the two symmetrical short rods (1045).

5. A method of using the light guide plate hot pressing forming apparatus according to any one of claims 1-4, characterized in that, Specifically, the steps include the following: Step 1: Placement of the light guide plate (11). Move the two U-shaped plates (1041) and under the action of the spring (103), drive the U-shaped plates (1041) to abut against the two side walls of the light guide plate (11). Move the position of the short rods (1045) so that the side walls of the two sets of short rods (1045) contact the other two end side walls of the light guide plate (11), which limits the position of the light guide plate (11). Step 2: Hot pressing and starting cylinder (2). The cylinder (2) descends, driving the pressure plate (3) and the hot pressing substrate (4) and gear frame (86) fixedly connected to the bottom of the pressure plate (3) to descend. After the hot pressing substrate (4) contacts the light guide plate (11), the gear frame (86) meshes with gear one (831). Under the action of multiple gears and gear blocks, the pressure plate (3) descends, driving the bottom plate (6) to descend. When the bottom plate (6) descends to the bottom of the processing groove (5), the gear frame (86) does not mesh with gear one (831). The cylinder (2) continues to descend, driving the hot pressing substrate (4) to descend continuously, and hot pressing is performed on the light guide plate (11) placed on the bottom plate (6). Step 3: Take out the processed light guide plate (11), start the cylinder (2) to drive the pressure plate (3) to rise, and under the gear transmission, the bottom plate (6) rises until the bottom plate (6) rises so that the light guide plate (11) protrudes from the top of the groove of the processing groove (5). At this time, the gear frame (86) is not meshed with the gear (831). The cylinder (2) continues to drive the pressure plate (3) to rise. The hot pressing base plate (4) fixed at the bottom of the pressure plate (3) leaves the surface of the light guide plate (11) and the light guide plate (11) can be taken out.

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