Composite polygonal mold applied to manufacturing of optical super lens

Abstract

The invention discloses a composite polygonal mold applied to manufacturing of an optical super-lens sheet, which comprises a rotary seat, and further comprises a polygonal groove, a lower mold cavity, an upper mold cavity, a lower mold cavity, an upper mold cavity and a lower mold cavity, the polygonal module is matched with the polygonal groove, and an upper die cavity is formed in the lower end of the polygonal module; the hopper-shaped groove is formed in the polygonal module, and the lower end of the hopper-shaped groove communicates with the upper mold cavity; the centrifugal valve assembly is arranged on the polygonal module and used for controlling opening and closing of the lower end of the bucket-shaped groove. The hopper-shaped groove is arranged to be pre-filled with fluid raw materials, and the centrifugal valve assembly is further arranged to control the hopper-shaped groove to be connected and disconnected with the upper die cavity, so that only when the rotating seat drives the polygonal module to rotate, the centrifugal valve assembly is opened, the fluid raw materials in the hopper-shaped groove are guided into the space formed by the lower die cavity and the upper die cavity, and the filling raw materials are just sufficient; the rotating seat can stop rotating according to the set time, the centrifugal valve assembly is automatically closed, and the problem that the middle of a formed part is concave is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of lens manufacturing, and in particular to a composite polygonal mold used for manufacturing an optical super lens sheet. Background Art

[0002] Super lenses are a type of metamaterial in the field of optics. They exhibit special optical properties that cannot be achieved by natural materials through artificially designed microstructures (such as periodically arranged subwavelength units). In the field of optical lens manufacturing, traditional compression molding technology relies on high temperature and high pressure to press molten glass or polymer into precision molds. The existing molds can basically meet the use requirements of super lens production, but there are still some shortcomings that need to be improved.

[0003] Patent document CN102081173A disclosed a lens on June 1, 2011, which includes an optical zone, a transition zone and a support zone. The optical zone is circular, and includes a first surface and a second surface corresponding to and concentric with the first surface. The first surface is plane-like, and the second surface is a curved surface. The outer diameter of the first surface is greater than the outer diameter of the second surface. The transition zone surrounds the optical zone and extends from the optical zone at a certain angle toward the direction of the second surface, and the support zone surrounds the transition zone and is interconnected with the transition zone. The lens of the present invention interconnects the support zone and the optical zone of the lens by using a transition zone, thereby avoiding the existence of turbulence during the injection molding process, speeding up the injection molding process, thereby reducing the stress in the lens and improving the precision of the lens.

[0004] When fluid raw materials are injected into a rotating mold, the fluid raw materials will fill the edge gaps in the mold cavity under the centrifugal force, but the centrifugal force will also cause the middle to be concave. Therefore, a composite polygonal mold for the production of optical superlens sheets is urgently needed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a composite polygonal mold for use in the production of optical superlens sheets to solve the above-mentioned shortcomings in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A composite polygonal mold for making an optical super lens sheet comprises a rotating seat and also includes: a polygonal groove, which is opened at the upper end of the rotating seat and has a lower mold cavity on its inner bottom surface; a polygonal module, which matches the polygonal groove and has an upper mold cavity at its lower end, and the lower mold cavity and the upper mold cavity form a molding mold cavity for the super lens sheet; a bucket-shaped groove, which is arranged on the polygonal module and has a lower end connected to the upper mold cavity; a centrifugal valve assembly, which is arranged on the polygonal module and is used to control the opening and closing of the lower end of the bucket-shaped groove, and the lower end of the bucket-shaped groove is opened only when the rotating seat drives the polygonal module to rotate.

[0008] Preferably, the centrifugal valve assembly includes a movable groove opened in the polygonal module, and two valve plates symmetrically arranged in a circumferential direction are elastically hinged in the movable groove. When the rotary seat does not rotate, the two valve plates are close together to separate the upper mold cavity and the bucket-shaped groove.

[0009] Preferably, a first gear ring is rotatably arranged inside the polygonal module, the first gear ring is meshedly connected with a first gear coaxially connected to the valve plate shaft, a lever is fixedly arranged on the outer side of the first gear ring, and an operating area matching the lever is opened on the outer wall of the polygonal module.

[0010] Preferably, a groove is provided at the center of the valve plates which are close to each other, and a stopper is elastically and movably provided in the groove.

[0011] Preferably, a cover is hinged on the upper end of the rotating seat, and a limiting component is provided on the cover for limiting itself to maintain the position of covering the polygonal groove.

[0012] Preferably, the limiting assembly comprises a button elastically and movably arranged at one end of the cover away from the hinged rotating seat position, a hook is fixedly arranged on the button, and a snap ring matching the hook is fixedly arranged on the side wall of the rotating seat.

[0013] Preferably, a top column is provided in the rotary seat for lifting movement, and a linkage component for linking the rotation of the cover and the lifting of the top column is provided in the rotary seat. When the cover is opened, the top column rises to lift up the polygonal module.

[0014] Preferably, the linkage assembly includes a second gear ring rotatably arranged in a rotating seat, the inner side of the second gear ring is meshedly connected with a second gear, the inner bottom surface of the polygonal groove is provided with a threaded hole, the top column is synchronously rotated with the second gear and is threadedly connected to the threaded hole, the outer side of the second gear ring is meshedly connected with a third gear, the third gear is coaxially connected with a linkage sleeve, the linkage sleeve is spirally connected with a linkage rod, and the cover is movably connected to the linkage rod through a hinged connecting rod.

[0015] Preferably, a storage groove is provided on the inner side wall of the polygonal groove, a sliding seat is movably provided in the storage groove, a rocker is elastically hinged on the sliding seat, the movement of the sliding seat is linked to the lifting and lowering of the linkage rod, and when the linkage rod descends, the sliding seat moves close to the polygonal groove.

[0016] Preferably, a cylindrical pin is fixedly provided on the side wall of the sliding seat, a linkage piece is fixedly provided on the upper end of the linkage rod, and a linkage groove movably connected to the cylindrical pin is provided on the side wall of the linkage piece.

[0017] In the above technical solution, the beneficial effects of the present invention are:

[0018] The composite polygonal mold used for making optical metalens sheets is provided with a bucket-shaped groove to pre-fill the fluid raw material, and a centrifugal valve assembly is also provided to control the on-off of the bucket-shaped groove to the upper mold cavity. In this way, only when the rotary seat drives the polygonal module to rotate, the centrifugal valve assembly is opened, and the fluid raw material in the bucket-shaped groove is introduced into the space composed of the lower mold cavity and the upper mold cavity, and immediately fills the edge gap in the cavity under the action of centrifugal force, so that the molding is more precise, and after the filling raw material is just sufficient, the rotary seat can stop rotating at the set time, and the centrifugal valve assembly is automatically closed to separate the excess fluid raw material, and the problem of concave middle part of the molded part will not occur.

[0019] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0020] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of a front cross-sectional structure provided by an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of a top cross-sectional structure provided by an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the structure of a polygon module provided by an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of the overall internal parts structure provided by an embodiment of the present invention;

[0027] Figure 6 The embodiment of the present invention provides Figure 5 Schematic diagram of the enlarged structure at point A in the middle.

[0028] Description of reference numerals:

[0029] 1. Rotary seat; 2. Polygonal groove; 3. Lower mold cavity; 4. Polygonal module; 5. Upper mold cavity; 6. Bucket groove; 7. Movable groove; 8. Valve plate; 9. First gear ring; 10. First gear; 11. Push rod; 12. Operating area; 13. Groove; 14. Stopper; 15. Cover; 16. Button; 17. Hook; 18. Snap ring; 19. Top column; 20. Second gear ring; 21. Second gear; 22. Threaded hole; 23. Third gear; 24. Linkage sleeve; 25. Linkage rod; 26. Connecting rod; 27. Storage groove; 28. Sliding seat; 29. ​​Rocker; 30. Cylindrical pin; 31. Linkage member; 32. Linkage groove. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0031] See also Figure 1-6 A composite polygonal mold for making an optical super lens sheet provided by an embodiment of the present invention includes a rotating seat 1, and also includes: a polygonal groove 2, which is opened at the upper end of the rotating seat 1, and a lower mold cavity 3 is arranged on its inner bottom surface; a polygonal module 4, which matches the polygonal groove 2, and an upper mold cavity 5 is arranged at its lower end, and the lower mold cavity 3 and the upper mold cavity 5 form a molding mold cavity for the super lens sheet; a bucket-shaped groove 6, which is arranged on the polygonal module 4, and its lower end is connected to the upper mold cavity 5; a centrifugal valve assembly, which is arranged on the polygonal module 4, and is used to control the opening and closing of the lower end of the bucket-shaped groove 6. When the rotating seat 1 drives the polygonal module 4 to rotate, the lower end of the bucket-shaped groove 6 is opened.

[0032] Specifically, the rotary seat 1 is in the shape of a rotating body, and a main shaft for connecting to an external rotating drive mechanism is arranged at the bottom; the polygonal groove 2 is preferably a hexagon, an octagon, etc., the polygonal module 4 matches the polygonal groove 2, and the polygonal module 4 is installed in the polygonal groove 2 to rotate integrally with the rotary seat 1; the lower mold cavity 3 is recessed on the inner bottom surface of the polygonal groove 2, and the upper mold cavity 5 is protruding at the lower end of the polygonal module 4; when the polygonal module 4 is installed in the polygonal groove 2, the upper mold cavity 5 is embedded in the lower mold cavity 3 and forms a closed space; the bucket-shaped groove 6 is open at the upper end, and the lower end continuously shrinks downward until it is connected to the upper mold cavity 5; the centrifugal valve assembly is opened when the rotary seat 1 drives the polygonal module 4 to rotate to generate centrifugal force, and conversely, it remains closed when the rotary seat 1 drives the polygonal module 4 to be stationary. In actual use of the present technical solution, the polygonal module 4 is accurately placed in the polygonal groove 2, the rotary seat 1 is connected to the external driving structure and remains stationary first, the centrifugal valve assembly remains closed, the fluid raw material is pre-added into the bucket-shaped groove 6, and then the rotary seat 1 is rotated by the external drive, the centrifugal valve assembly is opened due to the centrifugal force, and the fluid raw material in the bucket-shaped groove 6 is introduced into the space formed by the lower mold cavity 3 and the upper mold cavity 5, and immediately fills the edge gap in the cavity under the action of centrifugal force, so that the molding is more precise, and after the filling material is just sufficient, the rotary seat 1 can stop rotating at the set time, and the centrifugal valve assembly is automatically closed to separate the excess fluid raw material, and the problem of concave middle part of the molded part will not occur.

[0033] Compared with the prior art, a composite polygonal mold for the production of optical superlens sheets proposed in an embodiment of the present invention is provided with a bucket-shaped groove 6 for pre-filling fluid raw materials, and a centrifugal valve assembly is also provided to control the on and off of the bucket-shaped groove 6 to the upper mold cavity 5. In this way, only when the rotary seat 1 drives the polygonal module 4 to rotate, the centrifugal valve assembly is opened, and the fluid raw material in the bucket-shaped groove 6 is introduced into the space formed by the lower mold cavity 3 and the upper mold cavity 5, and immediately fills the edge gap in the cavity under the action of centrifugal force, so that the molding is more precise, and after the filling raw material is just sufficient, the rotary seat 1 can stop rotating at the set time, and the centrifugal valve assembly is automatically closed to separate the excess fluid raw material, and the problem of concave middle part of the molded part will not occur.

[0034] As the preferred technical solution of this embodiment, the centrifugal valve assembly includes an active groove 7 opened in the polygonal module 4, and two valve plates 8 symmetrically arranged in a circle are elastically hinged in the active groove 7. When the rotary seat 1 does not rotate, the two valve plates 8 are close together to separate the upper mold cavity 5 and the bucket-shaped groove 6. Specifically, the active groove 7 is arranged above the upper mold cavity 5 and separates the minimum inner diameter position of the lower end of the bucket-shaped groove 6; the inner wall of the active groove 7 is arranged to fit the rotation trajectory of the edge of the valve plate 8; the valve plate 8 is approximately semicircular; and the outer diameter is larger than the bucket-shaped groove 6. The connecting hole diameter of the groove 6 and the upper mold cavity 5; the rotating end of the valve plate 8 is set away from the center of the bucket-shaped groove 6, and is connected to the inside of the polygonal module 4 through a torsion spring, so that the valve plate 8 automatically maintains a closed position under the elastic force, and when the centrifugal force is sufficient to resist the elastic force, the valve plate 8 opens; when the valve plates 8 are opened away from each other, there is a possibility that fluid raw materials can enter the space left by the movable groove 7 close to the bucket-shaped groove 6, and under the setting that the inner wall of the movable groove 7 fits the edge of the valve plate 8, when the valve plate 8 is closed, it is guaranteed that the infiltrated fluid raw materials will be pushed out.

[0035] As the preferred technical solution of this embodiment, a first gear ring 9 is rotatably arranged inside the polygonal module 4, and the first gear ring 9 is meshingly connected with a first gear 10 coaxially connected to the rotating shaft of the valve plate 8. A lever 11 is fixedly arranged on the outside of the first gear ring 9, and an operating area 12 matching the lever 11 is opened on the outer wall of the polygonal module 4. Specifically, the first gear ring 9 is arranged above the movable groove 7 and surrounds the outer side of the lower end of the bucket-shaped groove 6; the arrangement of the first gear ring 9 and the first gear 10 enables the two valve plates 8 to rotate synchronously, that is, to open and close synchronously; the operating area 12 is a groove on the side wall of the polygonal module 4, which is convenient for pushing the lever 11 to actively drive the first gear ring 9 to rotate.

[0036] As the preferred technical scheme of this embodiment, a groove 13 is provided at the center of the valve plates 8 which are close to each other, and a stopper 14 is elastically and movably provided in the groove 13. Specifically, after the lens is formed, the lower surface fits the inner wall of the lower mold cavity 3, the upper surface fits the inner wall of the upper mold cavity 5, and the polygonal module 4 is embedded in the polygonal groove 2, which makes it inconvenient to take out the lens; a retracted groove matching the stopper 14 is provided on the inner side of the valve plate 8, and the retracted groove is connected to the groove 13, and a spring is provided in the retracted groove to push the stopper 14 so that the stopper 14 maintains a position that just fills the groove 13; when the polygonal module 4 is embedded in the polygonal groove 2 and the rotary seat 1 remains stationary, the two valve plates 8 are close together, and the stopper 14 extends out to keep blocking the groove 13, so that the fluid raw material pre-filled in the bucket-shaped groove 6 will not leak into the mold cavity, and then, the rotary seat 1 remains stationary. When the seat 1 rotates, the two valve plates 8 open away from each other due to the centrifugal force, and the fluid raw material enters the mold cavity. After the fluid raw material is fully introduced, the rotary seat 1 gradually stops rotating, so the two valve plates 8 come together again, but because the fluid raw material has a large viscosity, the block 14 will be hindered by the fluid raw material, and the block 14 will elastically shrink and cannot achieve the shearing effect, so that the two valve plates 8 are close together, and the two blocks 14 cannot be close together, then a part of the fluid raw material remains through the groove 13 and a part of the fluid raw material remains above the valve plate 8 for cooling and shaping, thereby, the molded lens can be clamped with the two valve plates 8, then when the polygonal module 4 is taken out later, the molded lens can be automatically taken out, which is convenient for operation, and the excess part of the lens can be easily cut off later.

[0037] In another embodiment of the present invention, a cover 15 is hingedly connected to the upper end of the rotary seat 1, and a limiting component is provided on the cover 15 for limiting itself to maintain the position of covering the polygonal groove 2. Specifically, the cover 15 is used to cover the polygonal groove 2, and its outer diameter is not less than the outer diameter of the upper end of the rotary seat 1. Two opposite convex plates are provided on the cover 15, and a hinge seat is provided on the side wall of the rotary seat 1 and one of the convex plates is hinged, and the limiting component is provided on the other convex plate.

[0038] As a preferred technical solution of this embodiment, the limiting assembly includes a button 16 elastically and movably arranged at one end of the cover 15 away from the position of the hinged rotating seat 1, a hook 17 is fixedly arranged on the button 16, and a snap ring 18 matching the hook 17 is fixedly arranged on the side wall of the rotating seat 1. Specifically, a shrinkage groove matching the button 16 is arranged in the cover 15, and another spring connected to the button 16 is arranged in the shrinkage groove. When the cover 15 is closed, the hook 17 is arranged downward, and the lower end of the hook 17 passes through the snap ring 18 and hooks the bottom surface of the snap ring 18, thereby maintaining the closed position of the cover 15; and when the button 16 is pressed, the button 16 resists the elastic force and drives the hook 17 to move, and the hook 17 moves so that the lower end is completely corresponding to the hollow part of the snap ring 18, so that the cover 15 can be opened smoothly.

[0039] As the preferred technical solution of this embodiment, a top column 19 is provided in the rotary seat 1 for lifting and lowering movement. A linkage component is provided in the rotary seat 1 for linking the rotation of the cover 15 with the lifting and lowering of the top column 19. When the cover 15 is opened, the top column 19 rises to lift the polygonal module 4. Specifically, under the setting of the linkage component, the top column 19 extends into the polygonal groove 2 to lift the polygonal module 4 when the cover 15 is opened, and shrinks and does not invade the polygonal groove 2 when the cover 15 is closed.

[0040] As a preferred technical solution of this embodiment, the linkage assembly includes a second gear ring 20 rotatably arranged in the rotary seat 1, the second gear ring 20 is meshed with a second gear 21 on the inner side, a threaded hole 22 is arranged on the inner bottom surface of the polygonal groove 2, the top column 19 is synchronously rotated and connected with the second gear 21, and is threadedly connected with the threaded hole 22, the outer side of the second gear ring 20 is meshed with a third gear 23, the third gear 23 is coaxially connected with a linkage sleeve 24, the linkage sleeve 24 is spirally connected with a linkage rod 25, and the cover 15 is connected by a screw thread. The hinged connecting rod 26 is movably connected with the linkage rod 25. Specifically, the second gear ring 20 is arranged near the lower end of the rotating seat 1, and the inner and outer circles of the second gear ring 20 are provided with teeth; the upper end of the second gear 21 is coaxially connected with a torsion shaft, and the lower end of the top column 19 is provided with a torsion groove matching the torsion shaft. The torsion shaft and the torsion groove can be preferably polygonal prism-shaped, which ensures that the top column 19 rotates with the second gear 21 without affecting the up and down movement of the top column 19; the outer wall of the top column 19 is provided with a thread and is threadedly connected with the threaded hole 22; the linkage sleeve 24 The inner wall is provided with a spiral groove, and the outer wall of the lower end of the linkage rod 25 is provided with a spiral convex or a sliding convex, which is movably connected with the spiral groove to form a spiral transmission function, and satisfies the active lifting transmission linkage sleeve 24 rotation of the linkage rod 25; the position of the hinged connecting rod 26 of the cover 15 is set at the end of the convex plate at one end of the hinged rotating seat 1 of the cover 15, that is, the position of the rotating shaft of the cover 15 is set between the position of the hinged connecting rod 26 and the position where the limit assembly is set; the side wall of the linkage rod 25 is hinged to the connecting rod 26 by sliding through the connecting piece of the rotating seat 1 In actual use, when the cover 15 is opened, the linkage rod 25 is pushed down by the connecting rod 26, and the linkage rod 25 triggers the linkage sleeve 24 to rotate. The linkage sleeve 24 drives the second gear ring 20 to rotate through the third gear 23, and the second gear ring 20 drives the top column 19 to rotate synchronously through the second gear 21. The top column 19 and the threaded hole 22 are threadedly fed and move upward to lift the polygonal module 4. When the cover 15 is closed, the above process is reversed to cause the top column 19 to shrink and not invade the polygonal groove 2.

[0041] As the preferred technical solution of this embodiment, a storage groove 27 is provided on the inner wall of the polygonal groove 2, and a sliding seat 28 is movably provided in the storage groove 27. A rocker 29 is elastically hinged on the sliding seat 28. The movement of the sliding seat 28 is linked with the lifting and lowering of the linkage rod 25. When the linkage rod 25 descends, the sliding seat 28 moves close to the polygonal groove 2. Specifically, the height to which the top column 19 lifts the polygonal module 4 is limited. When the operator takes the polygonal module 4, there is a risk of slipping, which causes the polygonal module 4 to fall into the polygonal groove 2 and generate impact, which may cause damage to the molded lens. The sliding seat 28 moves horizontally in the storage groove 27 and radially toward the polygonal module 4; another torsion spring is arranged at the rotating shaft of the seesaw 29 to maintain the end of the seesaw 29 pointing to the polygonal groove 2 to automatically tilt upward and extend out of the sliding seat 28; when the sliding seat 28 is at the deepest position of the storage groove 27, the seesaw 29 tilts freely and extends out of the sliding seat 28, but does not extend out of the storage groove 27; when the linkage rod 25 descends, the sliding seat 28 approaches the polygonal groove 2, that is, after the cover 15 is opened, the sliding seat 28 is close to the polygonal groove 2, so that the seesaw 29 invades the polygonal groove 2. At this time, if the polygonal module 4 slips off again, the polygonal module 4 can be subjected to the elastic resistance of the seesaw 29 to be buffered, so as to prevent the polygonal module 4 from returning to the deep inside of the polygonal groove 2 and to prevent the polygonal module 4 from being impacted and damaging the molded lens carried thereon; multiple seesaws 29 can be arranged along the height direction of the sliding seat 28 to achieve a better layer-by-layer progressive buffering effect.

[0042] As a further preferred technical solution of this embodiment, a cylindrical pin 30 is fixedly provided on the side wall of the sliding seat 28, a linkage member 31 is fixedly provided on the upper end of the linkage rod 25, and a linkage groove 32 movably connected to the cylindrical pin 30 is provided on the side wall of the linkage member 31. Specifically, the linkage groove 32 includes an inclined section at the upper end and a vertical section at the lower end. During the opening process of the cover 15, the linkage rod 25 descends, so that the top column 19 is linked to lift the polygonal module 4. At the same time, the linkage member 31 descends relative to the cylindrical pin 30, so that the cylindrical pin 30 and the vertical section at the lower end of the linkage groove 32 act first. At this time, the sliding seat 28 does not move. Then, after the cover 15 is opened to a certain extent, the polygonal module 4 is also lifted to a certain height. The cylindrical pin 30 begins to interact with the inclined section at the upper end of the linkage groove 32. At this time, the sliding seat 28 approaches the direction of the polygonal groove 2, and the seesaw 29 can be close to the side wall of the polygonal module 4 and rotate elastically. Then, after the polygonal module 4 is taken up and moved upward, the seesaw 29 elastically recovers to invade the polygonal groove 2 and is located under the polygonal module 4 to provide buffer protection; and in the closing process of the cover 15, the linkage rod 25 rises, so that the cylindrical pin 30 first interacts with the inclined section at the upper end of the linkage groove 32, thereby the linkage sliding seat 28 is first received in the storage groove 27, and then the seesaw 29 will not hinder the descent of the polygonal module 4, and then the cover 15 continues to close without interfering with the polygonal module 4.

[0043] 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 composite polygonal mold for making an optical super lens sheet, comprising a rotary seat (1), characterized in that: Also includes: A polygonal groove (2) is provided at the upper end of the rotary seat (1), and a lower mold cavity (3) is provided on the inner bottom surface thereof; A polygonal module (4) is matched with the polygonal groove (2), and an upper mold cavity (5) is arranged at the lower end thereof, and the lower mold cavity (3) and the upper mold cavity (5) form a molding cavity for the super lens sheet; A bucket-shaped groove (6) is arranged on the polygonal module (4), and its lower end is connected to the upper mold cavity (5); The centrifugal valve assembly is arranged on the polygonal module (4) and is used to control the opening and closing of the lower end of the bucket-shaped groove (6). The lower end of the bucket-shaped groove (6) is opened only when the rotating seat (1) drives the polygonal module (4) to rotate.

2. The composite polygonal mold for making an optical superlens sheet according to claim 1, characterized in that: The centrifugal valve assembly comprises a movable groove (7) provided in a polygonal module (4), wherein two valve plates (8) are elastically hinged in the movable groove (7) and are symmetrically arranged in a circumference. When the rotary seat (1) does not rotate, the two valve plates (8) are close together to separate the upper mold cavity (5) and the bucket-shaped groove (6).

3. The composite polygonal mold for making an optical super lens sheet according to claim 2, characterized in that: A first gear ring (9) is rotatably arranged inside the polygonal module (4), the first gear ring (9) is meshingly connected with a first gear (10) coaxially connected to the rotation axis of the valve plate (8), a lever (11) is fixedly arranged on the outer side of the first gear ring (9), and an operating area (12) matching the lever (11) is provided on the outer wall of the polygonal module (4).

4. The composite polygonal mold for making an optical super lens according to claim 2, characterized in that: A groove (13) is provided at the center of the valve plates (8) which are close to each other, and a stopper (14) is elastically and movably provided in the groove (13).

5. The composite polygonal mold for making an optical superlens sheet according to claim 1, characterized in that: A cover (15) is hingedly connected to the upper end of the rotary seat (1), and a limiting component is provided on the cover (15) for limiting the position of the cover to keep the polygonal groove (2) covered.

6. The composite polygonal mold for making an optical super lens according to claim 5, characterized in that: The limiting assembly comprises a button (16) elastically and movably arranged at one end of the cover (15) away from the hinged rotating seat (1), a hook (17) being fixedly arranged on the button (16), and a snap ring (18) matching the hook (17) being fixedly arranged on the side wall of the rotating seat (1).

7. The composite polygonal mold for making an optical super lens according to claim 5, characterized in that: A top column (19) is provided in the rotary seat (1) for lifting movement. A linkage assembly for linking the rotation of the cover (15) and the lifting of the top column (19) is provided in the rotary seat (1). When the cover (15) is opened, the top column (19) rises to lift up the polygonal module (4).

8. The composite polygonal mold for manufacturing an optical super lens sheet according to claim 7, characterized in that: The linkage assembly comprises a second toothed ring (20) rotatably arranged in a rotary seat (1); a second gear (21) is meshedly connected to the inner side of the second toothed ring (20); a threaded hole (22) is arranged on the inner bottom surface of the polygonal groove (2); the top column (19) is synchronously rotatably connected to the second gear (21) and is threadedly connected to the threaded hole (22); a third gear (23) is meshedly connected to the outer side of the second toothed ring (20); the third gear (23) is coaxially connected to a linkage sleeve (24); a linkage rod (25) is spirally connected to the linkage sleeve (24); and the cover (15) is movably connected to the linkage rod (25) via a hinged connecting rod (26).

9. The composite polygonal mold for making an optical superlens sheet according to claim 8, characterized in that: The inner side wall of the polygonal groove (2) is provided with a receiving groove (27), a sliding seat (28) is movably provided in the receiving groove (27), a rocker plate (29) is elastically hinged on the sliding seat (28), the movement of the sliding seat (28) is linked with the lifting and lowering of the linkage rod (25), and when the linkage rod (25) descends, the sliding seat (28) moves close to the polygonal groove (2).

10. The composite polygonal mold for manufacturing an optical super lens according to claim 9, characterized in that: A cylindrical pin (30) is fixedly provided on the side wall of the sliding seat (28), a linkage member (31) is fixedly provided on the upper end of the linkage rod (25), and a linkage groove (32) movably connected to the cylindrical pin (30) is provided on the side wall of the linkage member (31).

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