Multi-cavity optical lens injection mold
Through the design of a multi-cavity optical lens injection mold, magnets and return springs are used to achieve convenient mold disassembly and replacement. Combined with a 6+6 ring layout to optimize injection flow, the problems of long injection cycle and difficult mold replacement are solved, and efficient production is achieved.
Patent Information
- Application Number
- CN202422013273.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-08-20
AI Technical Summary
The existing lens mold design results in a long injection molding cycle, low mold output, and requires violent disassembly when replacing, which easily causes screws to become stuck, affecting production efficiency.
The optical lens injection mold adopts a multi-cavity design and uses a combination of magnets and return springs to achieve convenient mold disassembly and replacement. The 6+6 ring layout optimizes the injection flow and enables segmented injection production.
The injection molding production cycle is shortened by more than 55%, the production capacity is increased by 6 times, the mold efficiency is significantly improved, and the problem of difficult mold replacement is solved.
Smart Images
Figure CN223339890U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lens injection molds, in particular to a multi-cavity optical lens injection mold. Background Art
[0002] Automotive LED modules typically consist of multiple light-emitting components, including lenses. Lenses are a significant component of automotive lighting. Car lights provide illumination for nighttime driving and also signal various vehicle movements. Lights are generally categorized as headlights, taillights, and turn signals. Lens production requires the use of injection molds.
[0003] At present, most lens molds on the market are developed and designed as one mold with two cavities or one mold with four cavities. At the same time, lens products have thicker wall thickness and optical design requirements, which leads to a long injection molding cycle for the entire product and low mold output. Therefore, in the development process of each project model, in order to ensure mass production delivery, multiple molds will be developed at the same time to ensure the subsequent mass production and delivery needs. At the same time, two injection molding processes, a primary injection mold and a secondary injection mold, will be set on the outside of the lens mold. When the lens mold is used for a long time and one of the two injection molds of the lens mold is damaged, the primary injection mold and the secondary injection mold are mostly fixed by screws or welded, and the replacement cycle of the injection mold is generally long, resulting in the subsequent screws being locked, and then violent disassembly and replacement are required. Utility Model Content
[0004] The purpose of the present utility model is to provide a multi-cavity optical lens injection mold to solve the problems raised in the above background technology.
[0005] To achieve the above objectives, the present invention provides the following technical solutions:
[0006] A multi-cavity optical lens injection mold includes a first movable mold, a first fixed mold is provided at the bottom end of the first movable mold, a second fixed mold is provided on one side of the first fixed mold, a groove is provided inside the second fixed mold, a rotating rod is provided inside the groove, the outer wall of the rotating rod is fixedly connected to the first rotating plate, the outer wall of the rotating rod is located on one side of the first rotating plate and is fixedly connected to the second rotating plate, the outer wall of the first rotating plate is fixedly connected to the first magnet, the outer wall of the second rotating plate is fixedly connected to the second magnet, a reset spring is provided between one end of the rotating rod and the groove, and an installation groove is provided on one side of the outer wall of the second fixed mold.
[0007] Furthermore, a positioning rod is provided inside the groove, one end of the positioning rod is fixedly connected to the third magnet, the end of the positioning rod away from the third magnet passes through the installation groove and the positioning rod is slidably connected to the second fixed mold. The addition of the first rotating plate enables the rotating rod to drive the first magnet to move.
[0008] Furthermore, a mounting block is fixedly connected to the outer wall of the first fixed mold, one end of the mounting block is slidably connected to the mounting groove, and the addition of the second rotating plate allows the second magnet to move inside the groove.
[0009] Furthermore, a positioning groove is provided on the outer wall of the mounting block, one end of the positioning rod is slidably connected to the positioning groove, a first injection-molded throttling insert is provided on the outer wall of the first fixed mold, and a second injection-molded throttling insert is provided on the outer wall of the second fixed mold. The addition of a reset spring allows the rotating rod to return to its initial position.
[0010] Furthermore, one end of the rotating rod passes through the outer wall of the second fixed mold and the rotating rod is rotatably connected to the second fixed mold. The groove is located on one side of the positioning rod and is fixedly connected to a baffle. The addition of the baffle limits the movement trajectory of the positioning rod.
[0011] Furthermore, the outer wall of the first movable mold is connected to the second movable mold by screws, and the two ends of the reset spring are fixedly connected to the inside of the groove and one end of the rotating rod respectively. The addition of the positioning rod makes it easy to fix the position of the mounting block.
[0012] Compared with the prior art, the beneficial effects of the present invention are:
[0013] 1. The multi-cavity optical lens injection mold described in the present invention can facilitate the individual separation of the first fixed mold and the second fixed mold by arranging the first rotating plate and the second rotating plate on the outer wall of the rotating rod, arranging the first magnet on the outer wall of the first rotating plate, arranging the second magnet on the outer wall of the second rotating plate, arranging a spring between the rotating rod and the groove, arranging the third magnet at one end of the positioning rod, and arranging the mounting block inside the mounting groove so that the third magnet can drive the positioning rod to move. In the present invention, when the first fixed mold and the second fixed mold are disassembled, separated and replaced, the rotating rod is rotated at this time, so that the subsequent first fixed mold and the second fixed mold can be conveniently disassembled, separated and replaced individually, and thus there is no need to violently disassemble and replace the first fixed mold and the second fixed mold.
[0014] 2. The utility model describes a multi-cavity optical lens injection mold, the mold is designed according to a 6+6 ring layout, which optimizes the flow of injection plastic and ensures molding, reduces the loss of injection pressure of the right-angled symmetrical layout, and is a significant improvement compared to the conventional one-mold two-cavity and one-mold four-cavity molds. Since the injection molding process is divided into two injections compared to the original one-time injection, and the two injections are carried out simultaneously in a mold, the injection production time is greatly shortened, and the overall injection cycle can be improved by more than 55% in efficiency. In addition, compared with multiple cavities, the output is doubled from the original most basic one-mold two-cavity to the current one-mold six-cavity. The comprehensive cycle improvement advantage is that the actual efficiency of the mold product is increased by 6 times compared to the traditional one-mold two-cavity model, and the output capacity is increased by 3 times compared to the one-mold four-cavity mold. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 This is a top sectional view of the groove of the utility model;
[0018] Figure 3 This is a schematic structural diagram of the first movable mold of the present utility model;
[0019] Figure 4 This is a schematic diagram of the first rotating plate structure of the present utility model.
[0020] In the figure: 1. first movable mold; 2. first fixed mold; 3. second fixed mold; 4. groove; 5. rotating rod; 6. first rotating plate; 7. second rotating plate; 8. first magnet; 9. second magnet; 10. return spring; 11. mounting groove; 12. positioning rod; 13. third magnet; 14. mounting block; 15. positioning groove; 16. first injection throttling insert; 17. second injection throttling insert; 18. baffle; 19. second movable mold. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0022] See also Figure 1 、 Figure 2 and Figure 4 The utility model provides a multi-cavity optical lens injection mold, and the technical solution is as follows:
[0023] A multi-cavity optical lens injection mold includes a first movable mold 1, a first fixed mold 2 is provided at the bottom end of the first movable mold 1, a second fixed mold 3 is provided on one side of the first fixed mold 2, a groove 4 is opened inside the second fixed mold 3, a rotating rod 5 is provided inside the groove 4, the outer wall of the rotating rod 5 is fixedly connected to the first rotating plate 6, the outer wall of the rotating rod 5 is located on one side of the first rotating plate 6 and is fixedly connected to the second rotating plate 7, the outer wall of the first rotating plate 6 is fixedly connected to the first magnet 8, the outer wall of the second rotating plate 7 is fixedly connected to the second magnet 9, a reset spring 10 is provided between one end of the rotating rod 5 and the groove 4, and a mounting groove 11 is opened on one side of the outer wall of the second fixed mold 3.
[0024] In a preferred embodiment, a positioning rod 12 is provided inside the groove 4, and one end of the positioning rod 12 is fixedly connected to the third magnet 13. The end of the positioning rod 12 away from the third magnet 13 passes through the installation groove 11 and the positioning rod 12 is slidingly connected to the second fixed mold 3. When the rotating rod 5 moves, the rotating rod 5 will drive the first rotating plate 6 to move, so that the first rotating plate 6 drives the first magnet 8 to move inside the groove 4.
[0025] In a preferred embodiment, a mounting block 14 is fixedly connected to the outer wall of the first fixed mold 2, and one end of the mounting block 14 is slidably connected to the mounting groove 11. When the second rotating plate 7 moves, the second rotating plate 7 drives the second magnet 9 to move, causing the second magnet 9 to move inside the groove 4.
[0026] In a preferred embodiment, a positioning groove 15 is provided on the outer wall of the mounting block 14, one end of the positioning rod 12 is slidably connected to the positioning groove 15, a first injection molding throttling insert 16 is provided on the outer wall of the first fixed mold 2, and a second injection molding throttling insert 17 is provided on the outer wall of the second fixed mold 3. When the rotating rod 5 moves to make the third, the rotating rod 5 will move inside the groove 4, and at the same time, the rotating rod 5 will drive the reset spring 10 to move.
[0027] The working principle of the present invention is as follows: the first fixed mold 2 and the second fixed mold 3 are disassembled, separated and replaced. At this time, the rotating rod 5 is rotated, and the rotating rod 5 drives the first rotating plate 6 and the second rotating plate 7 to perform a small circular motion inside the groove 4. The first rotating plate 6 will drive the first magnet 8 to perform a circular motion inside the groove 4, and the second rotating plate 7 will drive the second magnet 9 to perform a small circular motion inside the groove 4. At the same time, the rotating rod 5 drives the reset spring 10 to move, so that the first rotating plate 6 drives the first magnet 8 away from the third magnet 13, and the second rotating plate 7 drives the second magnet 9 to the side of the third magnet 13. The second magnet 9 and the third magnet 13 attract each other, so that the third magnet 13 drives the positioning rod 12 to move, and the positioning rod 12 moves toward the direction of the second magnet 9, so that the positioning rod 12 slides inside the groove 4 and the mounting groove 11. When the first fixed mold 2 or the second fixed mold 3 is replaced, the mounting block 14 is moved out of the mounting groove 11, and the rotating rod 5 is released. The twisting elastic force of the reset spring 10 drives the rotating rod 5 back to the initial position, and the rotating rod 5 drives the first rotating plate 6 and the second rotating plate 7 back to the initial position, so that the first rotating plate 6 drives the first magnet 8 back to the side of the third magnet 13. The first magnet 8 and the third magnet 13 repel each other, so that the third magnet 13 drives one end of the positioning rod 12 into the positioning groove 15, making it convenient for the subsequent first fixed mold 2 and the second fixed mold 3 to be disassembled, separated and replaced individually.
[0028] See also Figure 1 and Figure 3 The utility model provides a technical solution: one end of the rotating rod 5 passes through the outer wall of the second fixed mold 3 and the rotating rod 5 is rotatably connected to the second fixed mold 3. The groove 4 is located on one side of the positioning rod 12 and is fixedly connected to the baffle 18. When the third magnet 13 moves, the third magnet 13 will drive the positioning rod 12 to move, so that the positioning rod 12 can contact the baffle 18.
[0029] In a preferred embodiment, the outer wall of the first movable mold 1 is connected to the second movable mold 19 by screws, and the two ends of the reset spring 10 are fixedly connected to the inside of the groove 4 and one end of the rotating rod 5 respectively. When the positioning rod 12 moves, the positioning rod 12 will move inside the mounting groove 11, and at the same time, one end of the positioning rod 12 can be easily separated from the positioning operation.
[0030] The working principle of the present utility model: the first movable mold 1, the second movable mold 19, the first fixed mold 2 and the second fixed mold 3 are developed and designed with multiple mold cavities, the product layout is in accordance with the 6+6 layout, and the product is designed and formed by secondary injection molding and overmolding, which shortens the entire injection molding production cycle and improves production capacity and output. The mold design is in accordance with the monochrome secondary injection molding mode, and the product is subjected to segmented injection molding production, that is, it is divided into two injection moldings. The first fixed mold 2 and the first movable mold 1 are used for one-time injection molding to produce the inner core, and the second fixed mold 3 and the second movable mold 19 are used for secondary injection molding to produce the outer shape overmolding. The mold design injection molding first shot injection molding produces the lens inner core, which accounts for about 60% of the overall volume of the product lens. The secondary injection molding performs overall outer shape injection molding and pressure holding, so that the entire lens product is injection molded and achieves the designed dimensional accuracy.
[0031] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. A multi-cavity optical lens injection mold, comprising a first movable mold (1), characterized in that: A first fixed mold (2) is provided at the bottom end of the first movable mold (1), a second fixed mold (3) is provided on one side of the first fixed mold (2), a groove (4) is provided inside the second fixed mold (3), a rotating rod (5) is provided inside the groove (4), an outer wall of the rotating rod (5) is fixedly connected to a first rotating plate (6), an outer wall of the rotating rod (5) is located on one side of the first rotating plate (6) and is fixedly connected to a second rotating plate (7), an outer wall of the first rotating plate (6) is fixedly connected to a first magnet (8), an outer wall of the second rotating plate (7) is fixedly connected to a second magnet (9), a reset spring (10) is provided between one end of the rotating rod (5) and the groove (4), and a mounting groove (11) is provided on one side of the outer wall of the second fixed mold (3).
2. The multi-cavity optical lens injection mold according to claim 1, characterized in that: A positioning rod (12) is provided inside the groove (4), one end of the positioning rod (12) is fixedly connected to a third magnet (13), the end of the positioning rod (12) away from the third magnet (13) passes through the interior of the mounting groove (11), and the positioning rod (12) is slidably connected to the second fixed mold (3).
3. The multi-cavity optical lens injection mold according to claim 2, characterized in that: A mounting block (14) is fixedly connected to the outer wall of the first fixed mold (2), and one end of the mounting block (14) is slidably connected to the mounting groove (11).
4. The multi-cavity optical lens injection mold according to claim 3, characterized in that: The outer wall of the mounting block (14) is provided with a positioning groove (15), one end of the positioning rod (12) is slidably connected to the positioning groove (15), the outer wall of the first fixed mold (2) is provided with a first injection molding throttling insert (16), and the outer wall of the second fixed mold (3) is provided with a second injection molding throttling insert (17).
5. The multi-cavity optical lens injection mold according to claim 1, characterized in that: One end of the rotating rod (5) passes through the outer wall of the second fixed mold (3) and the rotating rod (5) is rotatably connected to the second fixed mold (3); the groove (4) is located on one side of the positioning rod (12) and is fixedly connected to a baffle (18).
6. The multi-cavity optical lens injection mold according to claim 1, characterized in that: The outer wall of the first movable mold (1) is connected to the second movable mold (19) via screws, and the two ends of the return spring (10) are fixedly connected to the inside of the groove (4) and one end of the rotating rod (5) respectively.