Light guide plate hot press molding device and molding method

Abstract

The invention discloses a light guide plate hot press forming device which comprises a device body, an air cylinder is embedded in the top of the device body, the output end of the air cylinder is fixedly connected with a pressing plate, the bottom of the pressing plate is fixedly connected with a hot press base plate, a machining groove is formed in a machining base of the device body, and a bottom plate is movably installed in the machining groove. A light guide plate is placed on the top of the bottom plate, and a cavity is formed in a machining base of the device body. An auxiliary assembly; a limiting assembly; and a secondary limiting assembly. The air cylinder drives the pressing plate to ascend, the bottom plate ascends under transmission of the gears until the bottom plate ascends to enable the light guide plate to protrude out of the top of a groove opening of the machining groove, the gear frame is not in meshed connection with the first gear, the air cylinder continuously drives the pressing plate to ascend, the hot-pressing base plate fixed to the bottom of the pressing plate leaves the surface of the light guide plate, and the light guide plate can be taken out; and a worker does not need to take out the processed light guide plate by stretching two hands into the processing groove, so that the operation is more convenient.

Description

Technical Field

[0001] The present invention relates to the field of hot pressing forming devices, and in particular to a light guide plate hot pressing forming device and a forming method Background Art

[0002] Light guide plate is an optical element that can conduct and evenly distribute light, usually made of highly transparent polymer materials. Light guide plates are widely used in various occasions, such as display backlight, lighting equipment, billboards, etc. The advantage of light guide plates is that they can effectively improve the utilization rate of light sources, make the display effect clearer and softer, and save energy and be environmentally friendly. In short, the application range of light guide plates is very wide. It can not only improve product quality and reduce energy consumption, but also bring softer, high-definition, high-contrast display and lighting effects to various occasions. During the production process of light guide plates, they need to be pressed and flattened.

[0003] The existing Chinese patent publication number is: CN215320585U, which provides a hot press machine for light guide plate production, including a mechanical body, the mechanical body is provided with a hot press table, the surface of the hot press table is provided with a concave hot press groove, the bottom of the hot press groove is paved with an anti-skid pad, the inner side of the hot press groove is also embedded with a plurality of freely retractable clamping rods, the outer side of the hot press table is connected to a plurality of cylinders corresponding to the clamping rods, a hot press base plate matching the hot press groove is suspended above the hot press table, an electrical connector is fixedly connected above the hot press base plate, a freely retractable telescopic rod is also connected above the electrical connector, and a support frame fixed on both sides of the hot press table is connected above the telescopic rod. The light guide plate is placed in the hot press groove, and the light guide plate is clamped after the clamping rod controlled by the cylinder is retracted, and the anti-skid pad at the bottom strengthens the fixation of the light guide plate position to prevent the hot press from deviating.

[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 process is completed, the staff needs to use both hands to reach into the hot pressing tank to take out the hot pressed light guide plate. The hot pressing tank is generally deep, and there is a certain risk when the staff 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 the present invention is to provide a light guide plate hot pressing forming device and forming method, so as to solve the problem raised in the above-mentioned background technology that after the hot pressing forming of the light guide plate is completed, the staff needs to use both hands to reach into the hot pressing groove to take out the hot pressed light guide plate, and the hot pressing groove is overall deep, which poses a certain risk when the staff takes out the light guide plate.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a light guide plate hot pressing forming device, comprising a device body, a cylinder is embedded in the top of the device body, and the output end of the cylinder is fixedly connected to a pressing plate, and the bottom of the pressing plate is fixedly connected to a hot pressing substrate, a processing groove is opened inside the processing seat of the device body, and a bottom plate is movably installed inside the processing groove, and a light guide plate is placed on the top of the bottom plate, and a cavity is opened inside the processing seat of the device body, and further comprising:

[0008] Synchronous mechanism, the inner wall of the cavity is rotatably connected with shaft 1 and shaft 2 through a bearing, and the outer wall of shaft 1 is fixedly sleeved with gear 3 in the gear set, the outer wall of shaft 2 is fixedly sleeved with gear 1 and gear 2 in the gear set, and gear 2 is meshingly connected with gear 3, the bottom of the bottom plate is fixedly connected with a vertical plate, and the outer wall of the vertical plate is fixedly connected with a tooth block, the tooth block is meshingly connected with gear 3, the bottom of the pressure plate is fixedly connected with a tooth frame, and the tooth frame is meshingly connected with gear 1;

[0009] Auxiliary component, the side wall of the vertical plate is fixedly connected with a T-block, and the end of the T-block slides in a slide groove reserved inside the main body of the device;

[0010] The limiting component has a notch in the bottom plate, and the inner wall of the notch is slidably connected with a slider via a spring;

[0011] A secondary limit assembly, wherein a U-shaped plate is fixedly connected to the top of the slider, and an inner wall of the U-shaped plate is movably connected to a movable plate through a second spring, and a short rod is movably sleeved in the movable plate, and two groups of short rods are movably connected through a connecting rod.

[0012] Preferably, the vertical plates are symmetrically fixedly connected to the bottom of the base plate, wherein a side wall of one vertical plate is fixedly connected with a vertical bar-shaped tooth block and both the vertical plate and the tooth block can pass through the through hole connecting the bottom of the processing groove and the cavity.

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

[0014] Preferably, the two notches are symmetrically opened inside the bottom plate, and the side walls of the "T"-shaped slider are fitted and slidably connected to the inner walls of the notch, and the two ends of the spring are fixedly connected to the ends of the slider and the inner wall of the notch respectively.

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

[0016] Preferably, a groove 1 with three open sides is provided inside the movable plate, and two groups of four symmetrical short rods and a protrusion fixedly connected to the top of one end of the short rod are in contact with the inner wall of the groove 1 and are slidably connected.

[0017] Preferably, a group of two symmetrical short rods are each provided with a groove 2, and the outer walls of the two ends of a connecting rod are fitted with and slidably connected to the inner walls of the two grooves 2 preset in the two symmetrical short rods.

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

[0019] Step 1: Place the light guide plate. Move the two U-shaped plates. Under the action of a spring, the U-shaped plates are driven to contact the two side walls of the light guide plate. The short rods are moved so that the side walls of the two groups of short rods are in contact with the other two end side walls of the light guide plate, thereby limiting the position of the light guide plate.

[0020] Step 2: hot pressing and forming, start the cylinder, the cylinder descends to drive the pressing plate and the hot pressing substrate and the gear frame fixedly connected to the bottom of the pressing plate to descend, after the hot pressing substrate contacts the light guide plate, the gear frame is meshed and connected with gear 1, under the transmission action of multiple sets of gears and gear blocks, the pressing plate descends to drive the bottom plate to descend, when the bottom plate descends to the bottom of the processing groove, the gear frame is not meshed and connected with gear 1 at this time, the cylinder continues to descend to drive the hot pressing substrate to continue to descend, and the light guide plate placed on the bottom plate is hot pressed;

[0021] Step 3, take out the processed light guide plate, start the cylinder to drive the pressure plate to rise, and the bottom plate rises under the gear transmission until the bottom plate rises so that the light guide plate protrudes from the top of the notch of the processing groove. The tooth frame is not engaged with the gear, and 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, and then the light guide plate can be taken out.

[0022] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0023] 1. Start the cylinder, which drives the pressure plate and the hot-pressing substrate fixedly connected to the bottom of the pressure plate to descend. After the hot-pressing substrate contacts the light guide plate, the tooth frame is meshed and connected with gear one. Under the transmission action of multiple sets of gears and tooth blocks, the pressure plate descends and drives the bottom plate to descend. When the bottom plate descends to the bottom of the processing groove, the tooth frame is not meshed and connected with gear one. The cylinder drives the hot-pressing substrate to continue to descend before the light guide plate placed on the bottom plate can be hot-pressed. When the formed light guide plate needs to be taken out, the cylinder drives the pressure plate to rise. The bottom plate rises under the gear transmission until the bottom plate rises so that the light guide plate protrudes from the top of the notch of the processing groove. The tooth frame is not meshed and connected with gear one. The cylinder continues to drive the pressure plate to rise, and the hot-pressing substrate fixed at the bottom of the pressure plate leaves the surface of the light guide plate before the light guide plate can be taken out. In this way, the staff does not need to use both hands to go deep into the processing groove to take out the processed light guide plate, and does not need an additional power source to take out the light guide plate, which is more convenient to operate.

[0024] 2. Move the two U-shaped plates to drive the U-shaped plates to abut against the two side walls of the light guide plate, and move the position of the short rods so that the side walls of the two groups of short rods are in contact with the side walls of the other two ends of the light guide plate. At this time, the position of the light guide plate is limited to avoid displacement of the light guide plate during hot pressing processing.

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0027] Figure 2 It is a stereoscopic diagram of the overall structure of the present invention (partially cut-away state of the device body);

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

[0029] Figure 4 It is an exploded view of the limiting assembly of the present invention (partial cutaway state of the movable plate and the U-shaped plate);

[0030] Figure 5 It is a three-dimensional diagram of the overall structure of the present invention (excluding the device body);

[0031] Figure 6 It is a three-dimensional diagram of the synchronous mechanism connection structure of the present invention.

[0032] Description of reference numerals:

[0033] 1. Device body; 2. Cylinder; 3. Press plate; 4. Hot pressing substrate; 5. Processing groove; 6. Bottom plate; 7. Cavity; 8. Synchronous 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. Tooth block; 86. Tooth frame; 9. Auxiliary component; 91. T-block; 92. Slide; 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 DESCRIPTION

[0034] In order 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] The present invention provides Figure 1-6 The light guide plate hot pressing forming device shown in the figure comprises a device body 1, a cylinder 2 is embedded in the top of the device body 1, and a pressing plate 3 is fixedly connected to the output end of the cylinder 2, and a hot pressing base plate 4 is fixedly connected to the bottom of the pressing plate 3, a processing groove 5 is opened inside the processing seat of the device body 1, and a bottom plate 6 is movably installed inside the processing groove 5, and a light guide plate 11 is placed on the top of the bottom plate 6, and a cavity 7 is opened inside the processing seat of the device body 1, and further comprises:

[0036] Synchronous mechanism 8, the inner wall of cavity 7 is rotatably connected with rotating shaft 1 81 and rotating shaft 2 82 through bearings, and the outer wall of rotating shaft 1 81 is fixedly sleeved with gear 3 833 in gear set 83, the outer wall of rotating shaft 2 82 is fixedly sleeved with gear 1 831 and gear 2 832 in gear set 83, and gear 2 832 is meshingly connected with gear 3 833, the bottom of bottom plate 6 is fixedly connected with vertical plate 84, and the outer wall of vertical plate 84 is fixedly connected with tooth block 85, and tooth block 85 is meshingly connected with gear 3 833, the bottom of pressing plate 3 is fixedly connected with tooth frame 86, and tooth frame 86 is meshingly connected with gear 1 831;

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

[0038] The limiting assembly 10 has a notch 101 formed inside the bottom plate 6, and a slider 102 is slidably connected to the inner wall of the notch 101 via a spring 103;

[0039] The secondary limit 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 via a spring 1043, and a short rod 1045 is movably sleeved in the movable plate 1042, and the two groups of short rods 1045 are movably connected via a connecting rod 1046.

[0040] The vertical plates 84 are symmetrically fixedly connected to the bottom of the base plate 6, and the side wall of one of the vertical plates 84 is fixedly connected with a vertical bar-shaped tooth block 85, and both the vertical plate 84 and the tooth block 85 can pass through the through hole connecting the bottom of the processing groove 5 and the cavity 7, thereby ensuring space for the vertical plate 84 to move.

[0041] 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 the cavity 7, and the lower end of the tooth frame 86 is movably sleeved on the rotating shaft 2 82 and the outer ring of the gear 1 831. A tooth block is provided in the middle section of the inner wall of the frame on one side of the tooth frame 86, and the tooth block on the inner wall of the frame of the tooth frame 86 is meshed and connected with the gear 1 831, so that the tooth frame 86 meshes with the gear 1 831 when moving to the appropriate position, driving the gear 1 831 to rotate, and then driving the gear 3 833 to rotate through the gear 2 832, so that the bottom plate 6 moves synchronously.

[0042] Two notches 101 are symmetrically opened inside the bottom plate 6, and the side wall of the "T"-shaped slider 102 fits and is slidably connected to the inner wall of the notch 101, and the two ends of the spring 103 are respectively fixedly connected to the ends of the slider 102 and the inner wall of the notch 101, so that the slider 102 can move through the U-shaped plate 1041 to limit the two ends of the light guide plate 11.

[0043] The two ends of the two sliders 102 that are far apart are fixedly connected with a U-shaped plate 1041, and the two ends of the spring 1043 are respectively fixedly connected to the bottom of the movable plate 1042 and the inner wall of the U-shaped plate 1041, and 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.

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

[0045] A group of two symmetrical short rods 1045 are each provided with a groove 1047, and the outer walls of the two ends of a connecting rod 1046 are in contact with and slidably connected to the inner walls of two preset grooves 1047 in the two symmetrical short rods 1045, ensuring that the use of multiple groups of short rods 1045 is not affected during the movement of the slider 102.

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

[0047] Step 1: Place the light guide plate 11. Move the two U-shaped plates 1041. Under the force of the spring 103, the U-shaped plates 1041 are driven to abut against the two side walls of the light guide plate 11. The position of the short rods 1045 is moved so that the side walls of the two groups of short rods 1045 are in contact with the other two end side walls of the light guide plate 11, thereby limiting the position of the light guide plate 11.

[0048] Step 2: Hot pressing and forming, start the cylinder 2. The cylinder 2 descends to drive the pressing plate 3 and the hot pressing substrate 4 and the gear frame 86 fixedly connected to the bottom of the pressing plate 3 to descend. After the hot pressing substrate 4 contacts the light guide plate 11, the gear frame 86 is meshed and connected with the gear 1 831. Under the transmission action of multiple sets of gears and gear blocks, the pressing plate 3 descends to drive the bottom plate 6 to descend. When the bottom plate 6 descends to the bottom of the processing groove 5, the gear frame 86 is not meshed and connected with the gear 1 831 at this time. The cylinder 2 continues to descend to drive the hot pressing substrate 4 to continue to descend, and the light guide plate 11 placed on the bottom plate 6 is hot pressed.

[0049] Step three, take out the processed light guide plate 11, start the cylinder 2 to drive the pressure plate 3 to rise, and the bottom plate 6 rises under the gear transmission until the bottom plate 6 rises and the light guide plate 11 protrudes from the top of the notch of the processing groove 5. The tooth frame 86 is not engaged with the gear 1 831, and the cylinder 2 continues to drive the pressure plate 3 to rise. The hot pressing substrate 4 fixed at the bottom of the pressure plate 3 leaves the surface of the light guide plate 11, and then the light guide plate 11 can be taken out.

[0050] Working principle: When using a light guide plate hot pressing forming device, firstly, two U-shaped plates 1041 are moved to clamp the light guide plate 11 between the two U-shaped plates 1041. Under the action of spring 103, the slider 102 drives the U-shaped plate 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 groups of short rods 1045 are in contact with the side walls of the other two ends of the light guide plate 11. At this time, the position of the light guide plate 11 is limited;

[0051] After the light guide plate 11 is placed, the cylinder 2 is started to descend, and the cylinder 2 drives the pressing plate 3 fixedly connected to the output end of the cylinder 2 and the hot pressing substrate 4 fixed at the bottom of the pressing plate 3 to descend. After the hot pressing substrate 4 descends a certain distance, the hot pressing substrate 4 contacts the light guide plate 11, and the tooth frame 86 fixedly connected to the bottom of the pressing plate 3 will be meshed with the gear 1 831 to drive the gear 1 831 to rotate, thereby driving the rotating shaft 2 82 fixedly sleeved on the inner ring of the gear 1 831 to rotate. At this time, the gear 2 832 fixedly sleeved on the outer wall of the rotating shaft 2 82 rotates synchronously, and the gear 2 832 is meshed with the gear 3 833, and the gear 3 833 is meshed with the tooth block 85 fixed on the outer wall of the vertical plate 84 (refer to Figure 6 The direction of the rotating arrow on the middle gear) is indicated by the meshing rotation direction of the gears, and the pressing plate 3 descends, and the bottom plate 6 can be driven to descend by the transmission synchronization of the synchronization mechanism 8 (refer to Figure 6 The bottom plate 6 is placed in the direction indicated by the straight arrow in the middle), the light guide plate 11 placed on the top of the bottom plate 6 descends into the processing groove 5. After the bottom plate 6 descends to the deepest part of the processing groove 5, the tooth frame 86 is not meshed with the gear 1 831 at this time, and the cylinder 2 continues to drive the pressing plate 3 to descend. The hot pressing substrate 4 fixed at the bottom of the pressing plate 3 performs hot pressing molding on the light guide plate 11 at this moment. At the same time, the movable plate 1042 is movably connected with the U-shaped plate 1041. In this way, when the hot pressing substrate 4 moves downward to resist 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, which will not be repeated here);

[0052] When the light guide plate 11 needs to be taken out after the hot pressing molding is completed, the cylinder 2 is started to rise, and the pressing plate 3 rises to drive the hot pressing substrate 4 to rise. Similarly, the above operation steps, at this time, the gear frame 86 rises with the rise of the pressing plate 3, and the gear frame 86 is meshed with the gear 1 831 to drive the gear 1 831 to rotate, and then drives the rotating shaft 2 82 fixedly sleeved on the inner ring of the gear 1 831 to rotate. At this time, the gear 2 832 fixedly sleeved on the outer wall of the rotating shaft 2 82 rotates synchronously, and the gear 2 832 is meshed with the gear 3 833. Then, gear three 833 is meshed with the tooth block 85 fixed on the outer wall of the vertical plate 84. According to the gear meshing rotation direction, the pressure plate 3 rises at this time, and the base plate 6 is driven to rise through the transmission of the synchronization mechanism 8, until the base plate 6 rises to the point where the light guide plate 11 placed on the base plate 6 protrudes from the top of the notch of the processing groove 5. The tooth frame 86 is no longer meshed with gear one 831. At this time, the cylinder 2 continues to drive the pressure plate 3 to rise, and the hot pressing substrate 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.

[0053] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that 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 above 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 device, comprising a device body (1), characterized in that: The top of the device body (1) is embedded with a cylinder (2), and the output end of the cylinder (2) is fixedly connected to a pressing plate (3), and the bottom of the pressing plate (3) is fixedly connected to a hot pressing substrate (4), a processing groove (5) is provided inside the processing seat of the device body (1), and a bottom plate (6) is movably installed inside the processing groove (5), and a light guide plate (11) is placed on the top of the bottom plate (6), and a cavity (7) is provided inside the processing seat of the device body (1), and further comprises: A synchronization mechanism (8), wherein the inner wall of the cavity (7) is rotatably connected to a rotating shaft 1 (81) and a rotating shaft 2 (82) via a bearing, and the outer wall of the rotating shaft 1 (81) is fixedly sleeved with a gear 3 (833) in a gear set (83), and the outer wall of the rotating shaft 2 (82) is fixedly sleeved with a gear 1 (831) and a gear 2 (832) in a gear set (83), and the gear 2 (832) is meshingly connected with the gear 3 (833), the bottom of 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), and the tooth block (85) is meshingly connected with the gear 3 (833), and the bottom of the pressure plate (3) is fixedly connected to a tooth frame (86), and the tooth frame (86) is meshingly connected with the gear 1 (831); 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 a slide groove (92) reserved inside the device body (1); A limit assembly (10), wherein a notch (101) is provided inside the bottom plate (6), and a slider (102) is slidably connected to the inner wall of the notch (101) via a spring (103); A secondary limit assembly (104), wherein a U-shaped plate (1041) is 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) via a second spring (1043), and a short rod (1045) is movably sleeved in the movable plate (1042), and two groups of short rods (1045) are movably connected via a connecting rod (1046).

2. The light guide plate hot pressing forming device according to claim 1, characterized in that: The vertical plates (84) are symmetrically fixedly connected to the bottom of the base plate (6), wherein a vertical bar-shaped tooth block (85) is fixedly connected to the side wall of one of the vertical plates (84), and both the vertical plate (84) and the tooth block (85) can pass through a through hole connecting the bottom of the processing groove (5) and the cavity (7).

3. The light guide plate hot pressing forming device according to claim 1, characterized in that: 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 the cavity (7), and the lower end of the tooth frame (86) is movably sleeved on the second rotating shaft (82) and the outer ring of the gear one (831), and a tooth block is provided in the middle section of the inner wall of the frame on one side of the tooth frame (86), and the tooth block on the inner wall of the frame of the tooth frame (86) is meshingly connected with the gear one (831).

4. The light guide plate hot pressing forming device according to claim 1, characterized in that: The two notches (101) are symmetrically arranged inside the bottom 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 respectively fixedly connected to the end of the slider (102) and the inner wall of the notch (101).

5. The light guide plate hot pressing forming device according to claim 4, characterized in that: The two ends of the two sliders (102) that are far apart are fixedly connected to a U-shaped plate (1041), the two ends of the second spring (1043) are respectively fixedly connected to the bottom of the movable plate (1042) and the inner wall of the U-shaped plate (1041), and 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).

6. The light guide plate hot pressing forming device according to claim 1, characterized in that: The movable plate (1042) is provided with a groove (1044) with three open sides inside, and two groups of four symmetrical short rods (1045) and a protrusion fixedly connected to the top of one end of the short rod (1045) are in contact with the inner wall of the groove (1044) and are slidably connected.

7. The light guide plate hot pressing forming device according to claim 6, characterized in that: A set of two symmetrical short rods (1045) are each provided with a second groove (1047), and the outer walls of the two ends of a connecting rod (1046) are fitted with and slidably connected to the inner walls of two preset second grooves (1047) in the two symmetrical short rods (1045).

8. A method for using a light guide plate hot pressing forming device according to any one of claims 1 to 7, characterized in that: The specific steps include: Step 1: placing the light guide plate (11), moving the two U-shaped plates (1041), and driving the U-shaped plates (1041) to abut against the two side walls of the light guide plate (11) under the action of the spring 1 (103), and moving the position of the short rods (1045) so that the side walls of the two groups of short rods (1045) are in contact with the other two end side walls of the light guide plate (11), thereby limiting the position of the light guide plate (11); Step 2: hot pressing and forming, start the cylinder (2), the cylinder (2) descends to drive the pressing plate (3) and the hot pressing substrate (4) and the gear frame (86) fixedly connected to the bottom of the pressing plate (3) to descend, after the hot pressing substrate (4) contacts the light guide plate (11), the gear frame (86) is meshed and connected with the gear 1 (831), under the transmission action of multiple sets of gears and gear blocks, the pressing plate (3) descends to drive the bottom plate (6) to descend, when the bottom plate (6) descends to the bottom of the processing groove (5), the gear frame (86) is no longer meshed and connected with the gear 1 (831), the cylinder (2) continues to descend to drive the hot pressing substrate (4) to continue to descend, and the light guide plate (11) placed on the bottom plate (6) is hot pressed and formed; Step 3: Take out the processed light guide plate (11), start the cylinder (2) to drive the pressure plate (3) to rise, and the bottom plate (6) rises under the gear transmission until the bottom plate (6) rises so that the light guide plate (11) protrudes from the top of the notch of the processing groove (5), the tooth frame (86) is no longer engaged with the gear 1 (831), and the cylinder (2) continues to drive the pressure plate (3) to rise, and 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 then the light guide plate (11) can be taken out.

Images