Light guide plate forming die

Abstract

The invention relates to the technical field of light guide plate forming, and discloses a light guide plate forming die which comprises a bottom plate, the top of the bottom plate is fixedly connected with a supporting plate, the top of the supporting plate is fixedly connected with a lower die, the top of the lower die is provided with an upper die, the lower die is provided with a material control mechanism, and the material control mechanism comprises a shaping frame. Through the design of the material control mechanism, after a light guide plate injection molding part is formed, the molding frame is controlled to move towards the outer side of the lower mold, and the molding frame directly moves to the outer side of the lower mold to be in contact with air, so that rapid heat dissipation, cooling and demolding operation of the molding frame are more facilitated; and the subsequent molding frame can be controlled to move into the lower mold, so that a new round of injection molding is carried out while cooling is carried out, and the situation that the machining efficiency is low due to the fact that a long time needs to be consumed to wait for complete cooling and demolding before next injection molding is carried out in the prior art is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of light guide plate forming, in particular to a light guide plate forming die. BACKGROUND

[0002] The acrylic light guide plate generally refers to a light guide plate made of optical-grade acrylic material, which mainly plays a role in converting linear light source into area light source. In specific applications, the backlight module technology of LCD display screen and notebook computer is generally used. Through the high light conduction rate of the light guide point, the light guide plate is calculated by the computer to make the light rays of the light guide plate refract into an area light source uniform light state.

[0003] Patent No. CN222741986U discloses a light guide plate forming die, which comprises a lower die, a top ceiling fixedly connected to the top of the lower die, a connecting seat movably connected to the bottom of the top ceiling, a upper die fixedly connected to the center of the bottom of the connecting seat, a buffer assembly fixedly connected to the left and right sides of the connecting seat, a mold groove formed in the inner cavity of the lower die, a jacking plate movably connected to the bottom of the inner cavity of the mold groove, a cold water pipe fixedly connected to the inner cavity of the lower die, and a water tank and a refrigerator arranged on the front of the lower die. After the light guide plate is prepared, it is convenient to demold, and the circulating cooling system can effectively improve the demolding efficiency. At the same time, when molding, the buffer assembly can improve the service life of the whole die.

[0004] The light guide plate needs to be molded by using a mold during processing. The above device realizes the purpose of efficient demolding by setting a circulating cooling system, but during water cooling, the cooling water cannot directly contact the light guide plate when flowing in the mold, and the internal heat of the mold needs to be absorbed first to achieve the purpose of cooling, so that the overall cooling still needs to take a long time. Therefore, a light guide plate forming die is proposed to solve the above problems. SUMMARY

[0005] In order to solve the above problems, the present application provides a light guide plate forming die.

[0006] The light guide plate forming die provided by the present application adopts the following technical scheme: A light guide plate forming die, comprising a bottom plate, a support plate fixedly connected to the top of the bottom plate, a lower die fixedly connected to the top of the support plate, an upper die arranged on the top of the lower die, and a material control mechanism arranged on the lower die. The material control mechanism comprises a shaping frame placed inside the lower mold, one side of the shaping frame is fixedly connected with an insertion plate, the other side of the shaping frame is fixedly connected with an insertion sleeve, the insertion plate is matched with the insertion sleeve, two positioning frames are fixedly connected on the two side walls of the shaping frame, a moving seat is arranged on the top of the bottom plate, a lifting frame is arranged on the top of the moving seat, a first air cylinder is fixedly connected between the lifting frame and the moving seat, two link plates are slidably connected inside the lifting frame, two extension plates are integrally formed on the link plates, one end of the extension plate extends into the positioning frame and is matched with the positioning frame, two strip plates are integrally formed on the top of the bottom plate, a threaded control rod is rotatably connected between the two strip plates, the threaded control rod penetrates through the moving seat and is connected with the moving seat through threads. The bottom plate is fixedly connected with a box, the box is provided with an air cooling assembly, the air cooling assembly comprises a fan, the fan is fixedly connected inside the box, the top of the box is fixedly connected with two air guide pipes, and the two air guide pipes respectively extend to the two sides of the top of the lower mold.

[0007] By adopting the above technical scheme, the shaping frame is controlled to move into the lower mold, then the upper mold and the lower mold are controlled to be closed for injection molding, after molding, the shaping frame is controlled to move to the outside of the lower mold, the shaping frame directly moves to the outside of the lower mold and contacts with air, which is more conducive to rapid heat dissipation and demolding operation, and after the shaped internal light guide plate moves out of the lower mold, the subsequent shaping frame can be controlled to move into the lower mold, so that a new round of injection molding is performed while cooling, avoiding the low processing efficiency caused by waiting for complete cooling and demolding before performing the next injection in the traditional way.

[0008] Preferably, two limiting plates are fixedly connected between the two strip plates, the two limiting plates penetrate through the moving seat, one side of one of the strip plates is fixedly connected with a first motor, and the first motor is fixedly connected with one end of the threaded control rod through an output shaft.

[0009] By adopting the above technical scheme, the first motor drives the threaded control rod to rotate after working.

[0010] Preferably, a positioning plate is integrally formed inside the lower mold, a positioning groove is formed in the bottom wall of the shaping frame, the positioning plate is matched with the positioning groove, the adjacent insertion plate extends into the insertion sleeve, two clamping blocks are slidably connected inside the insertion plate, the clamping blocks extend out of the insertion plate, a clamping groove is formed in the insertion sleeve, the clamping blocks penetrate through the clamping groove and are matched with the clamping groove, two reeds are fixedly connected inside the insertion plate, and the two reeds are respectively fixedly connected with the two clamping blocks.

[0011] By adopting the above technical scheme, the reeds provide elastic force to the clamping blocks.

[0012] Preferably, the lifting frame is internally rotatably connected with a bidirectional threaded rod, the bidirectional threaded rod penetrates two link plates in sequence, and the bidirectional threaded rod is threadedly connected with the two link plates respectively, one side wall of the lifting frame is fixedly connected with a second motor, and the second motor is fixedly connected with one end of the bidirectional threaded rod through an output shaft.

[0013] By adopting the above technical scheme, the two ends of the bidirectional threaded rod are opposite in thread direction, and the two link plates can be moved towards or away from each other.

[0014] Preferably, the lifting frame is integrally formed with auxiliary plates on the front and rear sides, the moving seat is fixedly connected with two guide plates on the top, and the two guide plates penetrate the two auxiliary plates respectively.

[0015] By adopting the above technical scheme, the guide plates vertically limit the auxiliary plates, so that the lifting frame can be stably and vertically lifted.

[0016] Preferably, the support plate is fixedly connected with a bracket plate on the top, the upper die is fixedly connected with a U-shaped plate on the top, the U-shaped plate penetrates the top wall of the bracket plate, the second air cylinder is fixedly connected with the top wall of the U-shaped plate, one end of the second air cylinder is fixedly connected with the top of the bracket plate, the upper die is fixedly connected with two pressing plates on the bottom, the lower die is provided with a through slot on the top, the plug sleeve is provided with a pressing groove on the top, and the pressing plates are matched with the through slot and the pressing groove respectively.

[0017] By adopting the above technical scheme, the U-shaped plate can be pushed and pulled up and down after the second air cylinder works.

[0018] Preferably, the upper die is provided with an injection port on the top, and the upper die is fixedly connected with an injection pipe on the top, and the injection pipe is in communication with the injection port.

[0019] By adopting the above technical scheme, the light guide plate injection material is injected after passing through the injection pipe and the injection port.

[0020] Preferably, the two air guide pipes are provided with electromagnetic valves respectively, the cabinet is fixedly connected with stabilizing plates on the two sides, and the two air guide pipes penetrate the two stabilizing plates and are fixedly connected with the stabilizing plates respectively.

[0021] By adopting the above technical scheme, the internal passages of different air guide pipes can be controlled to be closed or opened by switching the electromagnetic valves on the different air guide pipes.

[0022] Preferably, the support plate is fixedly connected with frame plates on the two sides, the frame plates are provided with ejection assemblies, the ejection assemblies comprise ejection plates and control plates, the ejection plates and the control plates are slidably connected in the frame plates, the control plate is arranged on one side of the ejection plate, a push plate is arranged between the control plate and the ejection plate, and the push plate is movably connected with the control plate and the ejection plate through movable hinges on the two ends respectively.

[0023] By adopting the above technical solution, the ejector plate can move vertically up and down inside the frame plate, while the control plate can move horizontally left and right inside the frame plate.

[0024] Preferably, a third cylinder is fixedly connected to one side wall of the frame plate, and one end of the third cylinder is fixedly connected to one side of the control plate.

[0025] By adopting the above technical solution, the control board is pushed and pulled horizontally after the third cylinder is working.

[0026] In summary, the present invention has the following beneficial technical effects: A light guide plate molding die, through the design of a material control mechanism, controls the plastic frame to move into the lower mold, and then controls the upper and lower molds to close for injection molding. After molding, the plastic frame is controlled to move to the outside of the lower mold, directly contacting the air, which is more conducive to rapid heat dissipation and demolding. After the plastic frame of the light guide plate is formed inside moves out of the lower mold, it can also control the subsequent plastic frames to move into the lower mold, so that a new round of injection molding can be performed while cooling. This avoids the situation of low processing efficiency caused by the traditional method of waiting for a long time to completely cool down and demold before the next injection molding can be performed.

[0027] A light guide plate molding die, through the design of an air-cooling component, allows the molded frame containing the light guide plate injection part to move to one side of the lower mold. After the fan operates, it generates airflow, which is then blown onto the light guide plate part through the air duct to cool it down. Compared with the method of cooling the lower mold when the injection part is inside the lower mold, this cooling method is more direct and efficient, and the cooling effect is better. Moreover, while cooling, it can also ensure the synchronous operation of the other molded frames, thus improving the injection efficiency.

[0028] A light guide plate molding die, through the design of the ejection component, after the light guide plate injection molded part has been fully cooled, the third cylinder on the demolding side works and pushes the control plate, causing the ejection plate to move upward and, after passing through the positioning groove, ejects the fully cooled light guide plate part inside the molding frame upward, thereby completing the demolding operation. This, combined with the above-mentioned cooling outside the mold, allows for direct ejection and demolding operations after cooling, making the steps simpler and requiring minimal manual intervention throughout the process, saving manpower and avoiding the problem of difficult rapid demolding of injection molded parts in traditional injection molds. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the box structure in this invention; Figure 3 This is a cross-sectional view of the support plate in this invention; Figure 4 for Figure 3 Enlarged view of point A in the image; Figure 5 This is a schematic diagram of the structure after the plastic frame is removed in this invention; Figure 6 for Figure 5 Enlarged view of point B in the image; Figure 7 This is a cross-sectional view of the frame plate in this invention; Figure 8 This is a cross-sectional view of the box structure in this invention; Figure 9 This is a schematic diagram of the upper mold in this invention.

[0030] Explanation of reference numerals in the attached drawings: 1. Bottom plate; 2. Support plate; 3. Lower mold; 4. Upper mold; 5. Material control mechanism; 51. Shaping frame; 52. Insert plate; 53. Insert sleeve; 54. Positioning frame; 55. Moving seat; 56. Lifting frame; 57. First cylinder; 58. Connecting plate; 59. Extension plate; 591. Strip plate; 592. Threaded control rod; 593. Limiting plate; 594. First motor; 595. Positioning plate; 596. Positioning groove; 597. Locking block; 598. Locking slot; 599. Spring; 581. Bidirectional threaded rod; 582. Second motor; 583. Auxiliary plate; 584. Guide plate; 585. Support plate; 586. U-shaped plate; 587. Second cylinder; 588. Pressing plate; 589. Pressing groove; 6. Housing; 7. Air-cooled assembly; 71. Fan; 72. Air duct; 73. Solenoid valve; 74. Stabilizing plate; 8. Frame plate; 9. Ejection assembly; 91. Ejection plate; 92. Control plate; 93. Push plate; 94. Third cylinder; 10. Injection pipe; 11. Injection port. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 9 The present invention will be described in further detail below.

[0032] This invention discloses a light guide plate forming mold. (Refer to...) Figures 1-9 It includes a bottom plate 1, a support plate 2 fixedly connected to the top of the bottom plate 1, a lower mold 3 fixedly connected to the top of the support plate 2, an upper mold 4 set on the top of the lower mold 3, and a material control mechanism 5 set on the lower mold 3; The material control mechanism 5 includes a shaping frame 51, which is placed inside the lower mold 3. A plate 52 is fixedly connected to one side of the shaping frame 51, and a sleeve 53 is fixedly connected to the other side of the shaping frame 51. The plate 52 and the sleeve 53 are matched. Two positioning frames 54 are fixedly connected to both sides of the shaping frame 51. A movable seat 55 is provided on the top of the bottom plate 1. A lifting frame 56 is provided on the top of the movable seat 55. A first cylinder 57 is fixedly connected between the lifting frame 56 and the movable seat 55. Two connecting plates 58 are slidably connected inside the lifting frame 56. Two extension plates 59 are integrally formed on the connecting plate 58. One end of the extension plate 59 extends into the interior of the positioning frame 54 and matches the positioning frame 54. Two strip plates 591 are integrally formed on the top of the bottom plate 1. A threaded control rod 592 is rotatably connected between the two strip plates 591. The threaded control rod 592 passes through the movable seat 55 and is threadedly connected to the movable seat 55.

[0033] A housing 6 is fixedly connected to the top of the bottom plate 1. An air-cooling component 7 is installed on the housing 6. The air-cooling component 7 includes a fan 71, which is fixedly connected inside the housing 6. Two air ducts 72 are fixedly connected to the top of the housing 6. The two air ducts 72 extend to the top of the lower mold 3 on both sides. After the shaping frame 51 is moved into the lower mold 3, the upper mold 4 and the lower mold 3 are then closed for injection molding. After molding, the shaping frame 51 is moved to the outside of the lower mold 3. The shaping frame 51 moves directly to the outside of the lower mold 3 to contact the air, which is more conducive to its rapid heat dissipation and demolding. After the shaping frame 51 moves out of the lower mold 3 after the internal light guide plate is formed, the subsequent shaping frame 51 can be moved into the lower mold 3. This allows for a new round of injection molding while cooling, avoiding the traditional situation where a long time is required to wait for the material to cool completely and be demolded before the next injection molding can be performed, resulting in low processing efficiency.

[0034] Two limiting plates 593 are fixedly connected between two strip plates 591. Both limiting plates 593 pass through the movable seat 55. A first motor 594 is fixedly connected to one side of one of the strip plates 591. The first motor 594 is fixedly connected to one end of the threaded control rod 592 through its output shaft. After the first motor 594 works, it drives the threaded control rod 592 to rotate. A positioning plate 595 is integrally formed inside the lower mold 3. A positioning groove 596 is opened on the bottom wall of the plastic frame 51. The positioning plate 595... 5. Matching the positioning groove 596, the adjacent insert plate 52 extends into the interior of the insert sleeve 53. Two locking blocks 597 are slidably connected inside the insert plate 52. The locking blocks 597 extend out of the insert plate 52. The insert sleeve 53 has a locking groove 598. The locking blocks 597 pass through the locking groove 598 and match the locking groove 598. Two springs 599 are fixedly connected inside the insert plate 52. The two springs 599 are fixedly connected to the two locking blocks 597 respectively. The springs 599 provide elastic force to the locking blocks 597.

[0035] The lifting frame 56 is internally connected to a bidirectional threaded rod 581, which passes through two connecting plates 58 in sequence. The bidirectional threaded rod 581 is threadedly connected to the two connecting plates 58 respectively. A second motor 582 is fixedly connected to one side wall of the lifting frame 56. The second motor 582 is fixedly connected to one end of the bidirectional threaded rod 581 through its output shaft. The threads at both ends of the bidirectional threaded rod 581 are opposite in direction, which can drive the two connecting plates 58 to move towards or away from each other. The front and rear sides of the lifting frame 56 are integrally formed with auxiliary plates 583. The top of the moving seat 55 is fixedly connected to two guide plates 584, which pass through the two auxiliary plates 583 respectively. The guide plates 584 vertically limit the auxiliary plates 583 to ensure that the lifting frame 56 can move vertically and stably. A support plate 585 is fixedly connected to the top of the support plate 2, and a U-shaped plate 586 is fixedly connected to the top of the upper mold 4. The U-shaped plate 586 penetrates the top wall of the support plate 585. A second cylinder 587 is fixedly connected to the top wall of the U-shaped plate 586. One end of the second cylinder 587 is fixedly connected to the top of the support plate 585. Two pressing plates 588 are fixedly connected to the bottom of the upper mold 4. A through groove is opened on the top of the lower mold 3, and a pressing groove 589 is opened on the top of the insert 53. The pressing plates 588 are matched with the through groove and the pressing groove 589 respectively. After the second cylinder 587 works, it pushes and pulls the U-shaped plate 586 up and down.

[0036] The upper mold 4 has an injection port 11. An injection pipe 10 is fixedly connected to the top of the upper mold 4. The injection pipe 10 is connected to the injection port 11. The light guide plate injection material is injected after passing through the injection pipe 10 and the injection port 11. Solenoid valves 73 are installed on both air ducts 72. Stabilizing plates 74 are fixedly connected to both sides of the housing 6. The two air ducts 72 pass through the two stabilizing plates 74 respectively and are fixedly connected to the stabilizing plates 74. By switching the solenoid valves 73 on different air ducts 72, the internal passage of different air ducts 72 can be controlled to close or open.

[0037] A frame plate 8 is fixedly connected to both sides of the support plate 2. An ejection assembly 9 is provided on the frame plate 8. The ejection assembly 9 includes an ejection plate 91 and a control plate 92. The ejection plate 91 and the control plate 92 are slidably connected inside the frame plate 8. The control plate 92 is located on one side of the ejection plate 91. A push plate 93 is provided between the control plate 92 and the ejection plate 91. The two ends of the push plate 93 are movably connected to the control plate 92 and the ejection plate 91 respectively through movable hinges. The ejection plate 91 can move vertically up and down inside the frame plate 8, and the control plate 92 can move horizontally left and right inside the frame plate 8. A third cylinder 94 is fixedly connected to one side wall of the frame plate 8. One end of the third cylinder 94 is fixedly connected to one side of the control plate 92. After the third cylinder 94 is working, it pushes and pulls the control plate 92 horizontally.

[0038] In actual operation, when this device is used, first connect the device to the power supply, and then splice and install different plastic frames 51. Specifically, when splicing, align the insert plate 52 on one side of the plastic frame 51 with the insert sleeve 53 on the other side of the plastic frame 51. After the alignment is completed, under the elastic force of the spring 599, the locking block 597 passes through the locking groove 598 on the insert sleeve 53, completing the splicing between different plastic frames 51. Similarly, when disassembling, simply press the locking block 597 into the insert plate 52 to complete the separation between different plastic frames 51. After all the plastic frames 51 are spliced ​​in this way, place one of the spliced ​​plastic frames 51 into the lower mold 3. The second motor 582 works and drives the bidirectional threaded rod 581 to rotate. The bidirectional threaded rod 581 drives the two connecting plates 58 to move towards each other. The connecting plates 58 drive the extension plate 59 to move until it is inserted into the positioning frame 54, forming a clamping purpose on the plastic frame 51. At this time, the assembly of the equipment is completed. During injection molding, the first motor 594 operates and drives the threaded control rod 592 to rotate. The threaded control rod 592 drives the moving seat 55 to move horizontally. The moving seat 55 drives the first cylinder 57 to move. The first cylinder 57 drives the lifting frame 56 to move. Through the above connection relationship, it can be seen that the plastic frame 51 can also move horizontally at this time. When the plastic frame 51 moves to the working position inside the lower mold 3, the first cylinder 57 retracts. At this time, the first cylinder 57 drives the lifting frame 56 to move downward. Through the above steps, it can be seen that the plastic frame 51 also moves downward, causing the positioning plate 595 to pass through the positioning groove 596. The bottom splice position of the positioning plate 595 and the bottom of the plastic frame 51 forms a complete bottom surface. After the corresponding molding frame 51 is placed, the second cylinder 587 retracts to drive the U-shaped plate 586 to move down. The U-shaped plate 586 drives the upper mold 4 to move down. When the upper mold 4 moves down to close with the lower mold 3, the protruding part of the upper mold 4 enters the molding frame 51. At the same time, the pressing plate 588 enters the pressing groove 589 on the insert 53 to form a pressing effect on the molding frame 51, thereby ensuring the stability of the injection molding process. The injection pipe 10 in this device is connected to an external material supply device and injects the injection material into the molding frame 51 through the injection port 11. This injection molding process is an existing injection molding technology, so it will not be described in detail here. After the above injection molding is completed, repeat the above similar operation. First, control the upper mold 4 to move upward to separate the mold. Then, the first cylinder 57 pushes the lifting frame 56 slightly upward, causing the injection frame to move above the positioning plate 595. Then, control the shaping frame 51 to move to the side of the lower mold 3, so that another shaping frame 51 on the side of this shaping frame 51 can enter the lower mold 3 to perform the injection molding task. At this time, the shaping frame 51 with the injection-molded light guide plate inside moves to the side of the lower mold 3 and is directly exposed to the air, which is more conducive to its heat dissipation. On this basis, the fan 71 generates airflow after working, and blows it onto the light guide plate through the air duct 72 to cool it down, so as to further accelerate the cooling efficiency. By controlling the opening or closing of the solenoid valve 73 on different air ducts 72, the passage of different air ducts 72 can be switched on and off, so that the air force can be more concentrated on the side of the air duct 72 that needs to be cooled down. The cooling effect is better in this way, and the injection task can be carried out simultaneously while cooling down, which improves the injection efficiency. After the light guide plate injection molded part has cooled sufficiently, the third cylinder 94 on the demolding side works and pushes the control plate 92. The control plate 92 moves and drives the push plate 93 to swing. After the push plate 93 swings, it pushes and pulls the ejector plate 91, causing the ejector plate 91 to move upward and push the fully cooled light guide plate part inside the plastic frame 51 upward after passing through the positioning groove 596, thus completing the demolding operation. In combination with the above-mentioned cooling outside the mold, the ejection demolding operation is performed directly after cooling is completed. The steps are simpler and the whole process does not require much manual intervention, which saves manpower and avoids the problem of difficult demolding of injection molded parts in traditional injection molds.

[0039] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A light guide plate forming mold, characterized in that: Includes a bottom plate (1), a support plate (2) is fixedly connected to the top of the bottom plate (1), a lower mold (3) is fixedly connected to the top of the support plate (2), an upper mold (4) is provided on the top of the lower mold (3), and a material control mechanism (5) is provided on the lower mold (3); The material control mechanism (5) includes a shaping frame (51), which is placed inside the lower mold (3). A plate (52) is fixedly connected to one side of the shaping frame (51), and a sleeve (53) is fixedly connected to the other side of the shaping frame (51). The plate (52) and the sleeve (53) are matched. Two positioning frames (54) are fixedly connected to both sides of the shaping frame (51). A movable seat (55) is provided on the top of the bottom plate (1), and a lifting frame (56) is provided on the top of the movable seat (55). The lifting frame (56) and the movable seat (55) are connected to each other. A first cylinder (57) is fixedly connected between the lifting frame (56) and two connecting plates (58) are slidably connected inside the lifting frame (56). Two extension plates (59) are integrally formed on the connecting plate (58). One end of the extension plate (59) extends into the positioning frame (54) and matches the positioning frame (54). Two strip plates (591) are integrally formed on the top of the bottom plate (1). A threaded control rod (592) is rotatably connected between the two strip plates (591). The threaded control rod (592) passes through the moving seat (55) and is threadedly connected to the moving seat (55). The bottom plate (1) is fixedly connected to the top of the box (6), and the box (6) is provided with an air-cooling component (7). The air-cooling component (7) includes a fan (71), which is fixedly connected to the inside of the box (6). The top of the box (6) is fixedly connected with two air ducts (72), which extend to the top sides of the lower mold (3) respectively.

2. The light guide plate forming mold according to claim 1, characterized in that: Two limiting plates (593) are fixedly connected between the two strip plates (591). Both limiting plates (593) pass through the movable seat (55). A first motor (594) is fixedly connected to one side of one of the strip plates (591). The first motor (594) is fixedly connected to one end of the threaded control rod (592) through the output shaft.

3. The light guide plate forming mold according to claim 1, characterized in that: The lower mold (3) has an integrally formed positioning plate (595) inside. The bottom wall of the plastic frame (51) has a positioning groove (596). The positioning plate (595) matches the positioning groove (596). The adjacent insert plate (52) extends into the insert sleeve (53). The insert plate (52) has two sliding blocks (597) inside. The blocks (597) extend out of the insert plate (52). The insert sleeve (53) has a slot (598). The blocks (597) pass through the slot (598) and match the slot (598). The insert plate (52) has two springs (599) fixedly connected inside. The two springs (599) are fixedly connected to the two blocks (597) respectively.

4. The light guide plate forming mold according to claim 1, characterized in that: The lifting frame (56) is rotatably connected to a bidirectional threaded rod (581). The bidirectional threaded rod (581) passes through two connecting plates (58) in sequence, and the bidirectional threaded rod (581) is connected to the two connecting plates (58) by threads respectively. A second motor (582) is fixedly connected to one side wall of the lifting frame (56). The second motor (582) is fixedly connected to one end of the bidirectional threaded rod (581) through its output shaft.

5. The light guide plate forming mold according to claim 1, characterized in that: The lifting frame (56) has auxiliary plates (583) integrally formed on both the front and rear sides. The top of the moving seat (55) is fixedly connected to two guide plates (584), and the two guide plates (584) pass through the two auxiliary plates (583) respectively.

6. The light guide plate forming mold according to claim 1, characterized in that: The support plate (2) is fixedly connected to the top of the bracket plate (585), the upper mold (4) is fixedly connected to the top of the U-shaped plate (586), the U-shaped plate (586) penetrates the top wall of the bracket plate (585), the top wall of the U-shaped plate (586) is fixedly connected to the second cylinder (587), one end of the second cylinder (587) is fixedly connected to the top of the bracket plate (585), the bottom of the upper mold (4) is fixedly connected to two pressing plates (588), the top of the lower mold (3) is provided with a through groove, the top of the insert (53) is provided with a pressing groove (589), and the pressing plate (588) is matched with the through groove and the pressing groove (589) respectively.

7. The light guide plate forming mold according to claim 1, characterized in that: The upper mold (4) has an injection port (11) and an injection tube (10) is fixedly connected to the top of the upper mold (4). The injection tube (10) is connected to the injection port (11).

8. The light guide plate forming mold according to claim 1, characterized in that: Solenoid valves (73) are provided on both of the air ducts (72), and stabilizing plates (74) are fixedly connected to both sides of the box (6). The two air ducts (72) pass through the two stabilizing plates (74) respectively and are fixedly connected to the stabilizing plates (74).

9. The light guide plate forming mold according to claim 1, characterized in that: The support plate (2) is fixedly connected to both sides of the frame plate (8). The frame plate (8) is provided with an ejection assembly (9). The ejection assembly (9) includes an ejection plate (91) and a control plate (92). The ejection plate (91) and the control plate (92) are slidably connected inside the frame plate (8). The control plate (92) is located on one side of the ejection plate (91). A push plate (93) is provided between the control plate (92) and the ejection plate (91). The two ends of the push plate (93) are movably connected to the control plate (92) and the ejection plate (91) respectively through movable hinges.

10. A light guide plate forming mold according to claim 9, characterized in that: A third cylinder (94) is fixedly connected to one side wall of the frame plate (8), and one end of the third cylinder (94) is fixedly connected to one side of the control plate (92).

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