Quick forming plastic mould for motorcycle lamp lens

Abstract

The utility model provides a motorcycle lamp lens quick forming plastic mold relates to motorcycle lamp lens forming technical field, including bottom plate, the outer surface fixed connection of bottom plate has two mould feet, and the outside of bottom plate is provided with the ejection mechanism, the ejection mechanism includes the push board, and the outer surface of push board is connected with the inner wall sliding of mould foot, and the side face of two mould feet away from bottom plate is commonly fixedly connected with the shell, and the side face of push board away from bottom plate is fixedly connected with the fixed plate, the side face fixedly connected with four reset rods of fixed plate away from push board. This motorcycle lamp lens quick forming plastic mold passes through the intercommunication design of air inlet pipe and movable die air outlet, and the even airflow is passed into the inside of cavity while the ejector pin is ejected, and the air film that forms can separate the lens and the movable model core surface quickly, and the flexible ejecting force of cooperation ejector pin reduces the ejecting strength that ejector pin needs, and also avoids the ejector pin direct action on the lens optical surface, to avoid the ejector pin mark problem.

Description

Technical Field

[0001] This utility model relates to a plastic mold, specifically a rapid prototyping plastic mold for motorcycle lamp lenses, belonging to the field of motorcycle lamp lens molding technology. Background Technology

[0002] Plastic molds are specialized molding equipment used in injection molding to shape molten plastic materials into products of specific shapes. The core of a mold consists of components such as a fixed mold, a moving mold, and an ejection system. It has the core advantages of high precision and mass production. It can accurately replicate the structural contours of various complex products, control dimensional tolerances within a very small range, and meet the stringent requirements of different industries for product appearance and performance. It is the core carrier for the industrial production of plastic products.

[0003] Chinese Patent Publication CN221339146U discloses a plastic mold for plastic parts. A second hydraulic cylinder controls the downward pressing of the moving template so that it coincides with the fixed mold frame. After the moving template and the fixed mold frame coincide, the movable seat is inserted into the square annular groove to seal the fixed mold frame and the moving template. After the plastic part is molded, the second hydraulic cylinder controls the moving template to rise, and the first hydraulic cylinder controls the fixed template to move upward, pushing the molded plastic part out of the fixed mold frame for easy demolding. After demolding, the first hydraulic cylinder controls the fixed template to reset.

[0004] While the aforementioned patented technology facilitates demolding to some extent, it cannot meet the production requirements of high-precision optical components such as motorcycle lamp lenses. During the ejection process, the ejector pins easily act directly on the lens surface, forming obvious ejector pin marks. This not only damages the lens's appearance but also severely affects the flatness and smoothness of its optical surface, leading to deviations in light refraction and converging effects, significantly reducing the lens's optical performance and product yield. Therefore, a rapid prototyping plastic mold for motorcycle lamp lenses is proposed here. Utility Model Content

[0005] This invention proposes a rapid prototyping plastic mold for motorcycle lamp lenses to solve the problem in the prior art where the ejector pins directly act on the lens surface during the ejection process, forming obvious ejector pin marks.

[0006] This utility model is achieved through the following technical solution: a rapid prototyping plastic mold for motorcycle lamp lenses, including a base plate, two mold feet are fixedly connected to the outer surface of the base plate, and an ejection mechanism is provided on the outer side of the base plate;

[0007] The ejection mechanism includes a push plate, the outer surface of which is slidably connected to the inner wall of the mold feet. A housing is fixedly connected to the side of the two mold feet away from the base plate. A fixing plate is fixedly connected to the side of the push plate away from the base plate. Four reset rods are fixedly connected to the side of the fixing plate away from the push plate, the outer surface of each reset rod being slidably connected to the inner wall of the housing. Four reset springs are fixedly connected to the side of the fixing plate away from the push plate. Three ejector pins are fixedly connected to the side of the fixing plate away from the push plate, the outer surface of each ejector pin being slidably connected to the inner wall of the housing. A water inlet pipe is fixedly connected to the left side of the housing. A condensation pipe is fixedly connected to the end of the water inlet pipe near the housing. A water outlet pipe is fixedly connected to the outer surface of the condensation pipe, and the outer surface of the water outlet pipe is fixedly connected to the right side of the housing. Two air inlets are fixedly connected to the inner wall of the housing. An airflow guide pipe is fixedly connected to the end of each air inlet pipe near the housing. The end of each airflow guide pipe away from the air inlet pipe is fixedly connected to the inner wall of the housing. An ejection through hole is provided on the outer surface of the base plate.

[0008] A moving mold is fixedly connected to one side of the outer shell away from the base plate, and the outer surface of the moving mold has several air outlets.

[0009] The outer surface of the moving mold has three pinholes, and the side of the moving mold away from the base plate has four guide holes.

[0010] A fixed mold is provided on the outside of the moving mold. Four guide pillars are fixedly connected to one side of the fixed mold near the moving mold. Lifting rings are fixedly connected to the upper surfaces of both the moving mold and the fixed mold.

[0011] A panel is fixedly connected to the side of the fixed mold away from the moving mold, and a heat insulation plate is fixedly connected to the side of the panel away from the fixed mold.

[0012] A flange is fixedly connected to the side of the heat insulation plate away from the panel, and a feed inlet is opened on the side of the heat insulation plate away from the panel.

[0013] This utility model provides a rapid prototyping plastic mold for motorcycle lamp lenses, which has the following beneficial effects:

[0014] 1. This rapid prototyping plastic mold for motorcycle lamp lenses achieves precise guidance and synchronous extension and retraction of the ejector pins during their movement through a high-precision clearance fit between the ejector pins and the moving mold pin holes, and relies on the rigid connection structure between the fixed plate and the push plate. This effectively avoids rigid contact between the ejector pins and the lens surface during ejection, eliminating the damage to the lens's appearance caused by ejector pin marks. At the same time, it ensures that the flatness and smoothness of the lens's optical surface are not damaged, ensuring that the light refraction and converging effects meet the design standards, and significantly improving the optical performance and pass rate of the lens products.

[0015] 2. This rapid prototyping plastic mold for motorcycle lamp lenses, through the interconnected design of the air inlet pipe, airflow guide pipe, and moving mold air outlet, allows for the introduction of uniform airflow into the cavity simultaneously with the ejector pin's ejection. The resulting air film can quickly separate the lens from the surface of the moving mold core. Combined with the flexible ejection force of the ejector pin, this reduces the ejection force required by the ejector pin and avoids the ejector pin directly acting on the lens optical surface. This fundamentally solves the problem of ejector pin marks, maintains the integrity of the lens appearance and the accuracy of the optical surface, and thus ensures the accuracy of the light transmission path, significantly improving the product yield and performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the base plate structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the left-side view of the fixed mold structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the moving mold structure of this utility model;

[0019] Figure 4 This is a schematic cross-sectional view of the push plate structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the left-side structure of the air inlet pipe of this utility model.

[0021] Explanation of reference numerals in the attached figures

[0022] 1. Base plate; 2. Mold feet;

[0023] 3. Ejection mechanism; 301. Push plate; 302. Fixing plate; 303. Reset rod; 304. Reset spring; 305. Housing; 306. Ejector pin; 307. Water inlet pipe; 308. Condensate pipe; 309. Water outlet pipe; 310. Air inlet pipe; 311. Airflow guide pipe; 312. Ejection through hole;

[0024] 4. Moving mold; 5. Air vent; 6. Pinhole; 7. Guide hole; 8. Fixed mold; 9. Guide pillar;

[0025] 10. Lifting ring; 11. Panel; 12. Insulation board; 13. Flange; 14. Feed inlet. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0027] Please see Figures 1-5 This utility model provides a rapid prototyping plastic mold for motorcycle lamp lenses, including a base plate 1, two mold feet 2 fixedly connected to the outer surface of the base plate 1, and an ejection mechanism 3 provided on the outer side of the base plate 1;

[0028] The ejection mechanism 3 includes a push plate 301, the outer surface of which is slidably connected to the inner wall of the mold foot 2. The two mold feet 2 are fixedly connected to the outer shell 305 on the side away from the base plate 1. The moving mold 4 is fixedly connected to the outer shell 305 on the side away from the base plate 1. The moving mold 4 has a cavity that matches the motorcycle lamp lens and is the core carrier for lens forming. It is directly connected to the outer shell 305 to shorten the force transmission path, improve ejection stability, and ensure forming accuracy. The outer surface of the moving mold 4 has several air outlets 5. The air outlets 5 are connected to the air passage system to break the vacuum suction force before ejection and form an air film during ejection, reducing the ejection force, avoiding marks on the lens surface, and improving the yield rate.

[0029] Please refer to this carefully. Figure 1 and Figure 4 A fixed plate 302 is fixedly connected to the side of the push plate 301 away from the base plate 1. Four reset rods 303 are fixedly connected to the side of the fixed plate 302 away from the push plate 301. The outer surface of each reset rod 303 is slidably connected to the inner wall of the outer shell 305. Three pin holes 6 are opened on the outer surface of the moving mold 4. The pin holes 6 are precisely matched with the ejector pins 306 of the ejection mechanism 3, providing stable guidance for the reciprocating motion of the ejector pins 306, ensuring the coaxiality of the extension and retraction of the ejector pins 306, preventing the ejector pins 306 from deviating and scratching the optical surface of the lens, and ensuring the lens forming quality. Four guide holes 7 are opened on the side of the moving mold 4 away from the base plate 1, which play a precise motion guiding role in the mold opening and closing process, constraining the displacement trajectory of the moving mold 4, and preventing it from lateral deviation or shaking.

[0030] Please refer to this carefully. Figure 3 and Figure 4 Four return springs 304 are fixedly connected to the side of the fixed plate 302 away from the push plate 301. Three ejector pins 306 are fixedly connected to the side of the fixed plate 302 away from the push plate 301. The outer surface of each ejector pin 306 is slidably connected to the inner wall of the outer shell 305. A fixed mold 8 is provided on the outer side of the moving mold 4. Four guide pins 9 are fixedly connected to the side of the fixed mold 8 near the moving mold 4. The guide hole 7 cooperates with the guide pin 9 to play a precise positioning role in the mold opening and closing process, ensuring the mold closing accuracy of the moving mold 4 and the fixed mold 8, and preventing the misalignment of the cavity from causing the lens size deviation. Lifting rings 10 are fixedly connected to the upper surface of the moving mold 4 and the upper surface of the fixed mold 8. These are special force-bearing components for mold lifting, transportation and installation. They can be conveniently used with lifting equipment to complete the handling of the mold and clamping and positioning on the injection molding machine, improving the convenience and safety of mold disassembly and maintenance.

[0031] Please refer to this carefully. Figure 2 and Figure 5 A water inlet pipe 307 is fixedly connected to the left side of the outer shell 305. A condensation pipe 308 is fixedly connected to the end of the water inlet pipe 307 near the outer shell 305. A water outlet pipe 309 is fixedly connected to the outer surface of the condensation pipe 308. The outer surface of the water outlet pipe 309 is fixedly connected to the right side of the outer shell 305. A panel 11 is fixedly connected to the side of the fixed mold 8 away from the moving mold 4. As the top support and connection component of the fixed mold 8, it can enhance the overall structural rigidity of the fixed mold 8 and prevent the fixed mold 8 from deforming under the injection pressure. A heat insulation plate 12 is fixedly connected to the side of the panel 11 away from the fixed mold 8. It can effectively block the heat generated by the fixed mold 8 during the injection molding process from being transferred to the injection molding machine worktable, reduce the heat loss of the mold, maintain the stability of the cavity temperature, ensure the filling and cooling effect of the plastic melt, and at the same time prevent high temperature from affecting the injection molding machine equipment.

[0032] Please refer to this carefully. Figure 5 The inner wall of the outer shell 305 is fixedly connected to two air inlet pipes 310. Each air inlet pipe 310 is fixedly connected to an airflow guide pipe 311 at the end near the outer shell 305. Each airflow guide pipe 311 away from the air inlet pipe 310 is fixedly connected to the inner wall of the outer shell 305. The outer surface of the base plate 1 is provided with an ejector through hole 312. The side of the heat insulation plate 12 away from the panel 11 is fixedly connected to a flange 13, which serves as the docking component between the mold and the injection molding machine nozzle. This enables precise coaxial connection between the mold gating system and the injection molding machine barrel, ensuring stable delivery of molten plastic. It also acts as a seal to prevent material leakage during injection. The side of the heat insulation plate 12 away from the panel 11 is provided with a feed port 14, which is the channel entrance for molten plastic to enter the mold cavity. It is connected to the flange 13 and the internal gating system of the mold, guiding the molten plastic to smoothly fill the mold along a preset path, ensuring uniform filling of the motorcycle lamp lens cavity and improving the product molding quality.

[0033] When using this utility model: Before use, the mold needs to be accurately hoisted onto the injection molding machine workbench using the lifting ring 10, so that the flange 13 is connected and fixed with the injection molding machine nozzle, and the connection of the water inlet pipe 307, water outlet pipe 309 to the cooling system and the air inlet pipe 310 to the air circuit system is completed. After checking the assembly accuracy of each component, the equipment is started.

[0034] After the mold is started, the moving mold 4 moves towards the fixed mold 8. The guide hole 7 constrains the movement trajectory of the moving mold 4, ensuring that the moving mold 4 and the fixed mold 8 are precisely aligned and tightly closed to form a sealed cavity. After the mold is closed, the injection molding stage begins. Molten plastic is injected into the cavity through the gating system via the inlet 14. At the same time, cooling water is introduced through the water inlet pipe 307 and circulated through the condenser pipe 308 to achieve constant temperature cooling of the cavity, ensuring that the plastic melt is uniformly solidified and molded. During this process, the heat insulation plate 12 blocks the heat from the cavity from being transferred to the injection molding machine, maintaining a stable molding temperature. The flange 13 ensures that the plastic conveying channel is sealed and leak-free. The panel 11 enhances the structural rigidity of the fixed mold 8, ensuring that the cavity is fully filled.

[0035] After molding is completed, the mold opening and ejection stage begins. The moving mold 4 separates from the fixed mold 8, the ejection mechanism 3 is activated, and the push plate 301 drives the fixed plate 302, ejector pin 306, and reset rod 303 to move synchronously. At the same time, high-pressure airflow is introduced through the air inlet pipe 310 and sprayed out from the air outlet 5 through the airflow guide pipe 311, breaking the vacuum adsorption force between the lens and the cavity and forming an air film. The ejector pin 306 accurately ejects the lens through the pin hole 6. After the part is removed, the reset spring 304 drives the ejector pin 306 and reset rod 303 to reset. The mold foot 2 provides sliding support for the ejection mechanism 3, completing one molding cycle. Mass production can be achieved through repeated operations.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rapid prototyping plastic mold for a motorcycle lamp lens, comprising a base plate (1), characterized in that: Two mold feet (2) are fixedly connected to the outer surface of the base plate (1), and an ejection mechanism (3) is provided on the outer side of the base plate (1). The ejection mechanism (3) includes a push plate (301), the outer surface of which is slidably connected to the inner wall of the mold foot (2). A housing (305) is fixedly connected to one side of the two mold feet (2) away from the base plate (1). A fixing plate (302) is fixedly connected to one side of the push plate (301) away from the base plate (1). Four reset rods (303) are fixedly connected to one side of the fixing plate (302) away from the push plate (301). The outer surface of each reset rod (303) is slidably connected to the inner wall of the housing (305). Four reset springs (304) are fixedly connected to one side of the fixing plate (302) away from the push plate (301). Three ejector pins (306) are fixedly connected to one side of the fixing plate (302) away from the push plate (301). The outer surface of each ejector pin (306) is... The bottom plate (1) is slidably connected to the inner wall of the outer shell (305). A water inlet pipe (307) is fixedly connected to the left side of the outer shell (305). A condenser pipe (308) is fixedly connected to the end of the water inlet pipe (307) near the outer shell (305). A water outlet pipe (309) is fixedly connected to the outer surface of the condenser pipe (308). The outer surface of the water outlet pipe (309) is fixedly connected to the right side of the outer shell (305). Two air inlet pipes (310) are fixedly connected to the inner wall of the outer shell (305). An airflow guide pipe (311) is fixedly connected to the end of each air inlet pipe (310) near the outer shell (305). The end of each airflow guide pipe (311) away from the air inlet pipe (310) is fixedly connected to the inner wall of the outer shell (305). A top-out through hole (312) is opened on the outer surface of the bottom plate (1).

2. The rapid prototyping plastic mold for a motorcycle lamp lens according to claim 1, characterized in that: The outer shell (305) is fixedly connected to a moving mold (4) on the side away from the base plate (1), and the outer surface of the moving mold (4) is provided with a number of air outlet holes (5).

3. The rapid prototyping plastic mold for a motorcycle lamp lens according to claim 2, characterized in that: The outer surface of the moving mold (4) has three pinholes (6), and the side of the moving mold (4) away from the base plate (1) has four guide holes (7).

4. The rapid prototyping plastic mold for a motorcycle lamp lens according to claim 2, characterized in that: A fixed mold (8) is provided on the outside of the moving mold (4). Four guide pillars (9) are fixedly connected to one side of the fixed mold (8) near the moving mold (4). Lifting rings (10) are fixedly connected to the upper surface of the moving mold (4) and the upper surface of the fixed mold (8).

5. The rapid prototyping plastic mold for a motorcycle lamp lens according to claim 4, characterized in that: A panel (11) is fixedly connected to the side of the fixed mold (8) away from the moving mold (4), and a heat insulation plate (12) is fixedly connected to the side of the panel (11) away from the fixed mold (8).

6. The rapid prototyping plastic mold for a motorcycle lamp lens according to claim 5, characterized in that: A flange (13) is fixedly connected to the side of the heat insulation plate (12) away from the panel (11), and a feed inlet (14) is provided on the side of the heat insulation plate (12) away from the panel (11).

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