A rapid prototyping mold for plastic

Abstract

The application discloses a plastic rapid prototyping mold, and relates to the technical field of rapid prototyping molds, which comprises a base; the two fans and the mold box are matched to facilitate air convection, accelerate heat dissipation inside the mold box, improve the heat dissipation effect, and then the function of the cooling mechanism can be assisted to improve the plastic cooling speed; the analysis module is used for intelligently analyzing historical production data to accurately determine the critical temperature for ensuring product quality; the system automatically monitors the ambient temperature, and initiates heating when the ambient temperature is less than the critical temperature, so that the forming defects, such as increased internal stress, surface shrinkage or insufficient filling, caused by too low ambient temperature and too fast plastic cooling are fundamentally avoided, and the product yield is improved; the best heating temperature required is accurately calculated, so that the air temperature entering the mold box is accurately increased to the required range, and the "on-demand heating" is realized, so that the forming quality is ensured, and energy waste is avoided.

Description

Technical Field

[0001] This invention relates to the technical field of rapid prototyping molds, and more particularly to a rapid prototyping mold for plastics. Background Technology

[0002] In the production of plastic products, plastic molding molds are an indispensable key piece of equipment. Their performance directly affects product quality, production efficiency, and production costs. Among them, product molding is the first step in the plastic molding process and is crucial to the smoothness of the entire production process. However, traditional plastic molding molds generally have many problems. Traditional molds often have simple heat dissipation structures, or even lack dedicated heat dissipation devices. During continuous operation, the mold accumulates a large amount of heat. If this heat cannot be dissipated in time, the mold temperature will become too high, further affecting the cooling rate of the plastic and the molding effect. It will also shorten the mold's lifespan and increase equipment maintenance costs. In addition, the ejection device of traditional molds is cumbersome to operate, and the ejection force and timing are difficult to control precisely. This often results in products being difficult to eject or stuck in the mold. This not only requires manual assistance to remove the parts, which is labor-intensive, but may also damage the products during the removal process, affecting the product qualification rate and slowing down the production schedule. Furthermore, the cooling of traditional molds relies on the continuous inflow and outflow of condensate, resulting in high condensate usage costs. Therefore, the above-mentioned problems need to be addressed and improved. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a rapid prototyping mold for plastics.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a plastic rapid prototyping mold, comprising a base, an injection box and a mold box installed on the top surface of the base, a water tank installed inside the base, the water tank containing condensate, a glass window hinged to the front end face of the mold box, a cooling mechanism and an ejection mechanism installed inside the mold box, and circular mounting grooves provided on the top and rear ends of the mold box, with a heat dissipation mechanism installed in the mounting grooves; The mold's control box is equipped with intelligent control components, which include an analysis module and an adjustment module. The analysis module receives and preprocesses the collected temperature data; it analyzes the cooling temperature and cooling effect in historical data to determine the critical value of the cooling temperature; when the ambient temperature is lower than the critical value of the cooling temperature, it generates a heating signal and transmits the heating signal to the regulation module; it analyzes the required heating temperature based on the critical values ​​of the ambient temperature and the cooling temperature and transmits the heating temperature to the regulation module.

[0005] Preferably, the analysis module performs the following steps to determine the critical value of the cooling temperature: S1: Acquire historical data, acquire the cooling temperature and cooling effect of the same plastic products, mark the cooling temperature data with poor cooling effect, and determine the continuity of the marked cooling temperature data; sort the acquired cooling temperature data according to the cooling temperature magnitude, and if the adjacent sequence number of the marked cooling temperature data is also marked, the two cooling temperature data are determined to be continuous, and the continuity count is incremented by one. S2: Count the continuity of all primary-marked cooling temperature data. Mark cooling temperature data with a continuity count exceeding a preset threshold a secondary mark. Mark adjacent cooling temperature data with good and poor cooling effects a tertiary mark. Filter the data, retaining the cooling temperature data marked a secondary mark from the tertiary marks. Mark the cooling temperature data with a good cooling effect corresponding to the secondary-marked cooling temperature data as critical data. Take the maximum value among the critical data as the critical temperature data. .

[0006] Preferably, the analysis module performs the following steps to analyze the heating temperature: M1: The heat transferred to the airflow by the heating structure when it heats the airflow. Equal to the heat absorbed by the airflow itself ,in , and These are the mass flow rate and specific heat capacity at constant pressure of the airflow, respectively. and These are the final temperature and initial temperature of the airflow, respectively. , The convective heat transfer coefficient is... The contact area between the heating structure and the airflow; temperature difference. , The heating temperature of the heating structure; M2: When At that time, the heating temperature of the heating structure , For temperature exchange efficiency, Dimensionless .

[0007] Preferably, an installation platform is installed inside the mold box, a limiting plate is provided on one side of the installation platform, the ejection mechanism is installed on the limiting plate, the rear end face of the limiting plate is fixedly connected to the rear end face inside the mold box, and a first mold is provided on one side of the limiting plate, a second mold is provided on one side of the first mold, and the rear side of the second mold is connected to one side of the inside of the mold box.

[0008] Preferably, the heat dissipation mechanism includes a cross-shaped mounting bracket installed in the mounting slot. A motor is mounted on one end of the mounting bracket, and a fan is mounted on the output end of the motor. The fan is located at the other end of the mounting bracket, and the two fans have opposite airflow directions.

[0009] Preferably, the ejection mechanism includes an electric push rod installed in the middle of one side of the mounting platform. The output end of the electric push rod passes through the limiting plate and connects to one side of the first mold. Push rods are fixed to the four corners of one side of the limiting plate. The other end of the push rod passes through the first mold and is flush with the inner side of the first mold. A spring is sleeved on the outside of the push rod. One end of the spring is connected to one side of the limiting plate, and the other end of the spring is connected to one side of the first mold. A sealing strip is installed on one side of the first mold, and a sealing groove that matches the sealing strip is opened on one side of the second mold.

[0010] Preferably, the cooling mechanism includes a condensation tank formed inside the first mold and the second mold, and a condenser installed inside the mold box. The front end of the condenser is provided with a rearward-facing cooling fan, and the rear end of the condenser is provided with an exhaust pipe. The other end of the exhaust pipe passes through the rear end face of the mold box. The front ends of the first mold and the second mold are provided with water inlets, and the rear ends of the first mold and the second mold are provided with water outlets.

[0011] Preferably, the condenser inlet is connected to the water tank via a metal hose, the condenser outlet is connected to a water pump via a metal hose, the other end of the water pump is connected to a first distributor, the first distributor is connected to the inlets of the first mold and the second mold via two metal hoses, the outlets of the first mold and the second mold are both connected to a second distributor via metal hoses, the bottom end of the second distributor is equipped with a water pipe facing into the water tank, and the first distributor, the second distributor and the water pump are all installed on the top surface of the base.

[0012] Preferably, an air intake assembly is provided at the fan position located at the air inlet. The air intake assembly includes a concave frame. A plurality of evenly distributed limiting blocks are integrally formed on one side of the outer wall of the concave frame. An annular plate is provided inside the mold box at the position corresponding to the limiting blocks. An extrusion gear is rotatably connected inside the mold box at the position corresponding to the concave frame.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. The combination of two fans and the mold box facilitates air convection, accelerates heat dissipation within the mold box, and improves heat dissipation, thereby assisting the cooling mechanism in enhancing the cooling speed of the plastic. The combination of the ejector rod, spring, and first mold facilitates the ejection of the product, allowing it to quickly detach from the mold and improving ejection convenience, thus achieving efficient product ejection. Furthermore, the combination of the condenser and water tank facilitates the recycling of coolant, saving costs, and rapidly reduces the temperature of the condensate, increasing the molding speed of the mold. Ultimately, this solves the problems of slow cooling speed, inconvenient ejection, and high costs associated with the inability to recycle condensate in existing structures. 2. The air intake assembly, consisting of a concave frame, limiting block, extrusion gear, and telescopic spring, can periodically cause the filter cloth to undergo a "relaxation-instant tension" action. By using inertial force, the dust adhering to the filter cloth can be effectively shaken off, preventing dust from adhering to the molten plastic surface and forming pits and scratches, thus reducing the scrap rate caused by appearance defects. The heating structure can be rotated to the filter cloth position to heat it and remove moisture. The dry filter cloth not only makes it easier for dust to fall off, improving the automatic dust removal effect, but also effectively prevents the filter cloth from becoming moldy or clumping in humid environments, enhancing the adaptability and reliability of the mold in high humidity environments. 3. The system intelligently analyzes historical production data through an analysis module to accurately determine the critical temperature for ensuring product quality. It automatically monitors ambient temperature and proactively activates heating when the ambient temperature is below the critical temperature, fundamentally preventing molding defects such as increased internal stress, surface shrinkage, or insufficient filling caused by excessively rapid cooling of the plastic due to low ambient temperature, thus improving product yield. The system does not simply turn on heating; instead, it uses a rigorous thermodynamic model, comprehensively considering various parameters such as airflow mass flow rate, heat transfer coefficient, contact area, and efficiency factor to accurately calculate the optimal heating temperature. This ensures that the air temperature entering the mold box is precisely raised to the required range, achieving "on-demand heating," which guarantees molding quality while avoiding energy waste, achieving a balance between energy saving and high efficiency. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall appearance of the device proposed in this invention; Figure 2 This is a rear view schematic diagram of the overall appearance of the device proposed in this invention; Figure 3 This is a schematic diagram of the internal structure of the device proposed in this invention; Figure 4These are schematic diagrams of the first mold and the second mold proposed in this invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the first mold and the second mold proposed in this invention; Figure 6 This is a schematic diagram of the air intake component structure proposed in this invention; Figure 7 This is a flowchart of the system proposed in this invention.

[0015] The components in the diagram are numbered as follows: 1. Base; 2. Injection box; 3. Mold box; 4. Glass window; 5. Water tank; 6. Mounting platform; 7. First mold; 8. Second mold; 9. Motor; 10. Fan; 11. Electric actuator; 12. Limiting plate; 13. Push rod; 14. Spring; 15. Condensation tank; 16. First distributor; 17. Second distributor; 18. Exhaust pipe; 19. Water pump; 20. Sealing strip; 21. Condenser; 22. Concave frame; 23. Limiting block; 24. Extrusion gear. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0017] Example 1: See Figures 1 to 5This invention discloses a rapid prototyping mold for plastics, comprising a base 1 for easy installation of an injection box 2 and a mold box 3; the injection box 2 and the mold box 3 are mounted on the top surface of the base 1, facilitating injection molding into the mold via the injection box 2; the mold box 3 facilitates the installation of a cooling mechanism and a heat dissipation mechanism; a water tank 5 is installed inside the base 1 for storing condensate for recycling; the water tank 5 contains condensate; a glass window 4 is hinged to the front face of the mold box 3, allowing for easy observation of the interior of the mold box 3; and The mold box 3 is equipped with a cooling mechanism and an ejection mechanism. Circular mounting slots are provided on both the top and rear ends of the mold box 3, and heat dissipation mechanisms are installed within these slots. An mounting platform 6 is installed inside the mold box 3, facilitating the movement of the first mold 7 by the electric push rod 11. A limiting plate 12 is provided on one side of the mounting platform 6, facilitating the installation of the ejector rod 13. The ejection mechanism is mounted on the limiting plate 12, with its rear end fixedly connected to the rear end of the mold box 3. The first mold 7 is located on one side of the limiting plate 12, facilitating the fitting of the first mold. The second mold 8 is used for sealing injection molding; the second mold 8 is provided on one side of the first mold 7, and the rear side of the second mold 8 is connected to one side of the interior of the mold box 3. The heat dissipation mechanism includes a cross mounting bracket installed in the mounting slot. A motor 9 is installed at one end of the mounting bracket, which facilitates the driving of the fan 10 to rotate. The output end of the motor 9 is equipped with a fan 10, which facilitates convection to accelerate the cooling rate of the interior of the mold box 3. The fan 10 is located at the other end of the mounting bracket, and the two fans 10 have opposite airflow directions. The ejection mechanism includes a mounting plate 6 installed on one side. The electric push rod 11 in the middle of the mold has its output end passing through the limiting plate 12 and connected to one side of the first mold 7. Each of the four corners of the limiting plate 12 is fixed with a push rod 13, which facilitates the ejection of the product from the first mold 7. The other end of the push rod 13 passes through the first mold 7 and is flush with the inner side of the first mold 7. A spring 14 is sleeved on the outside of the push rod 13, which helps to buffer the impact force of the push rod 13 and prevent damage to the product. One end of the spring 14 is connected to one side of the limiting plate 12, and the other end of the spring 14 is connected to one side of the first mold 7.

[0018] In this invention, the cooling mechanism includes a condensation tank 15 formed inside the first mold 7 and the second mold 8, and a condenser 21 installed inside the mold box 3. The condenser 21 facilitates rapid reduction of the condensate temperature; the condensation tank 15 facilitates heat exchange and removal by the condensate, reducing the temperature of the first mold 7 and the second mold 8; a rearward-facing cooling fan is provided at the front end of the condenser 21, and an exhaust pipe 18 is installed at the rear end of the condenser 21 to facilitate the discharge of heat generated during the heat exchange of the condenser 21; the other end of the exhaust pipe 18 penetrates the rear end face of the mold box 3, and both the front ends of the first mold 7 and the second mold 8 have water inlets, and both the rear ends of the first mold 7 and the second mold 8 have water outlets. The water inlet of the condenser 21 is connected to the water tank 5 via a metal hose, and the water outlet of the condenser 21 is connected to the water pump 19 via a metal hose. The water pump 19 facilitates the pumping of coolant from the water tank 5 to the condenser 21 for cooling. The other end of the water pump 19 is connected to a first distributor 16, which is connected to the inlet of the first mold 7 and the second mold 8 via two metal hoses. The outlets of the first mold 7 and the second mold 8 are connected to a second distributor 17 via metal hoses. The first distributor 16 and the second distributor 17 facilitate the separate collection of condensate from the two inlets and the two outlets. A water pipe facing the inside of the water tank 5 is installed at the bottom of the second distributor 17. The first distributor 16, the second distributor 17, and the water pump 19 are all installed on the top surface of the base 1. A sealing strip 20 is installed on one side of the first mold 7. The sealing strip 20 and the sealing groove cooperate to improve the sealing performance of the first mold 7 and the second mold 8. A sealing groove that cooperates with the sealing strip 20 is opened on one side of the second mold 8.

[0019] Working principle: When using this invention, first, the device is powered on, and then all electrical appliances are turned on. First, the electric push rod 11 pushes the first mold 7 to one side, aligning the first mold 7 and the second mold 8. At this time, the sealing strip 20 is inserted into the sealing groove, so that the first mold 7 and the second mold 8 are in a sealed state. At this time, the injection box 2 injects molding into the mold. After the injection is completed, the water pump 19 starts, pumping the condensate in the water tank 5 to the condenser 21. The cooling fan in the condenser 21 blows the heat on the heat dissipation fins to the outside of the device through the exhaust pipe 18, preventing heat from entering the mold box 3. At the same time, the two motors 9 start, driving the two fans 10 to rotate, and the rear fan... 10 draws air from the outside in, exchanging media with the first mold 7 and the second mold 8. Then, the top fan 10 extracts internal heat, reducing the mold temperature to increase the product molding speed. At the same time, the condensate can also quickly reduce the mold temperature. After exchanging heat, the condensate flows back to the water tank 5 and is recycled by the water pump 19. After injection molding, the electric push rod 11 moves the first mold 7 to the other side. At the same time, the ejector rod 13 contacts the product and pushes the product out of the first mold 7. Meanwhile, the spring 14 can buffer the impact force of the ejector rod 13 on the first mold 7 to avoid product damage. After injection molding, the power can be disconnected.

[0020] Example 2: See Figure 6 and Figure 7 Unlike Embodiment 1, a dust-filtering cloth is installed at the air inlet of the fan 10, and a heating structure is installed between the filter cloth and the plastic. The heating structure is used to heat the cold air at the air inlet. The heating structure can also be rotated to the position of the extrusion gear 24 to heat the filter cloth at the position of the extrusion gear 24, remove the moisture from the filter cloth, and make the dust on the filter cloth more easily separated from the filter cloth under the tension force. An air inlet assembly is provided at the location of the fan 10 at the air inlet. The air inlet assembly includes a concave frame 22, with upper and lower concave frames 22 forming a group. The air inlet is aligned with a group of concave frames 22, and the diameter of the air inlet is smaller than the distance between the upper and lower concave frames 22. Several concave frames 22 are arranged in a ring. Several evenly distributed limiting blocks 23 are integrally formed on one side of the outer wall of the concave frame 22. An annular plate is provided inside the mold box 3 at the position corresponding to the limiting block 23. A sliding groove is opened on the annular plate at the position corresponding to the limiting block 23. The limiting block 23 fits tightly with the sliding groove, so that the concave frame 22 fits tightly with the fan 10 at the air inlet. When the concave frame 22 slides along the slide groove, it slides towards the center of the ring. A telescopic spring connected to the limiting block 23 is installed inside the slide groove. A pressing gear 24 is rotatably connected inside the mold box 3 at the position corresponding to the concave frame 22. When the pressing gear 24 rotates under the drive of the drive motor, it pushes the concave frame 22 at the corresponding position closer to the concave frame 22 in the same direction, so that the filter cloth is relaxed and the telescopic spring is deformed and stretched. After the pressing gear 24 is no longer squeezed, it quickly rebounds under the rebound force of the telescopic spring, so that the filter cloth is tightened instantly and the dust filtered on the filter cloth falls off. The mold's control box is equipped with intelligent control components, which include an analysis module and an adjustment module. The analysis module receives and preprocesses the collected temperature data; it analyzes the cooling temperature and cooling effect in historical data to determine the critical value of the cooling temperature; when the ambient temperature is lower than the critical value of the cooling temperature, it generates a heating signal and transmits the heating signal to the regulation module; it analyzes the required heating temperature based on the critical values ​​of the ambient temperature and the cooling temperature and transmits the heating temperature to the regulation module. Ambient temperature and plastic temperature data are collected by temperature sensors. Temperature data collected from multiple locations are preprocessed and the average of the processed temperature data is calculated. The calculated average of the corresponding temperature data is used as the ambient temperature data and the plastic temperature data, respectively. Preprocessing: The collected data is sorted according to the collection time, and corresponding items collected at the same time are processed. averaging the data and standard deviation The calculation, and the mean obtained from the calculation. and standard deviation Collect data fluctuation range for corresponding items The system is configured to compare the collected data for a given item with its fluctuation range, mark data outside the fluctuation range as outliers, and record the number of outliers. ,like If the collected data is abnormal, the data will be re-tested; if If outliers are removed, the mean of the remaining corresponding test data after outlier removal is calculated. The calculation, and the mean obtained from the calculation. As the corresponding data detected at the corresponding time; Historical data is acquired, and the cooling temperature and cooling effect of the same plastic products are obtained. Cooling temperature data with poor cooling effect are marked once, and the continuity of the marked cooling temperature data is judged. The acquired cooling temperature data are sorted according to the cooling temperature magnitude. If the adjacent sequence number of the marked cooling temperature data is also marked once, the two cooling temperature data are considered continuous, and the continuity count is incremented by one. The continuity count of all marked cooling temperature data is counted, and cooling temperature data with a continuity count exceeding a preset threshold are marked a second time. Adjacent cooling temperature data with good and poor cooling effects are marked a third time. The data is filtered, and the cooling temperature data with a second mark in the three-marking process is retained. The cooling temperature data with a good cooling effect corresponding to the second-marked cooling temperature data is marked as critical data, and the maximum value of the critical data is taken as the critical temperature data. It was determined that when the cooling temperature data is lower than the critical temperature data, the cooling effect of plastic products will deteriorate. external ambient temperature Below At that time, a heating signal is generated and transmitted to the regulating module; After receiving the heating signal, the adjustment module controls the heating structure to perform the heating operation and rotates to a designated position during the heating process, so that the temperature has reached the set temperature value when it reaches the designated position. When the heating structure heats the airflow, the heat transferred from the heating structure to the airflow... Equal to the heat absorbed by the airflow itself ,in , and These are the mass flow rate and specific heat capacity at constant pressure of the airflow, respectively. and These are the final temperature and initial temperature of the airflow, respectively. , The convective heat transfer coefficient is... The contact area between the heating structure and the airflow; temperature difference. , The heating temperature of the heating structure; when At that time, the heating temperature of the heating structure , For temperature exchange efficiency, Dimensionless ; The corresponding heating temperature is calculated based on the real-time temperature difference, so that the temperature of the heating structure reaches the corresponding value. After neutralizing with the cold air, the plastic product dissipates heat, thereby improving the molding speed of the plastic product.

[0021] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A plastic rapid prototyping mold, comprising a base (1), characterized in that: The base (1) is equipped with an injection box (2) and a mold box (3) on its top surface. A water tank (5) is installed inside the base (1). Condensate is placed inside the water tank (5). A glass window (4) is hinged to the front end of the mold box (3). A cooling mechanism and an ejection mechanism are installed inside the mold box (3). Circular mounting grooves are opened on the top and rear ends of the mold box (3). A heat dissipation mechanism is installed in the mounting grooves. The mold's control box is equipped with intelligent control components, which include an analysis module. The analysis module receives and preprocesses the collected temperature data; it analyzes the cooling temperature and cooling effect in historical data to determine the critical value of the cooling temperature; when the ambient temperature is lower than the critical value of the cooling temperature, it generates a heating signal and transmits the heating signal to the regulation module; it analyzes the required heating temperature based on the critical values ​​of the ambient temperature and the cooling temperature and transmits the heating temperature to the regulation module.

2. The plastic rapid prototyping mold according to claim 1, characterized in that: The steps for the analysis module to determine the critical value of cooling temperature are as follows: S1: Acquire historical data, acquire the cooling temperature and cooling effect of the same plastic products, mark the cooling temperature data with poor cooling effect, and determine the continuity of the marked cooling temperature data; sort the acquired cooling temperature data according to the cooling temperature magnitude, and if the adjacent sequence number of the marked cooling temperature data is also marked, the two cooling temperature data are determined to be continuous, and the continuity count is incremented by one. S2: Count the continuity of all primary-marked cooling temperature data. Mark cooling temperature data with a continuity count exceeding a preset threshold a secondary mark. Mark adjacent cooling temperature data with good and poor cooling effects a tertiary mark. Filter the data, retaining the cooling temperature data marked a secondary mark from the tertiary marks. Mark the cooling temperature data with a good cooling effect corresponding to the secondary-marked cooling temperature data as critical data. Take the maximum value among the critical data as the critical temperature data. .

3. The plastic rapid prototyping mold according to claim 1, characterized in that: The analysis module performs the following steps to analyze the heating temperature: M1: The heat transferred to the airflow by the heating structure when it heats the airflow. Equal to the heat absorbed by the airflow itself ,in , and These are the mass flow rate and specific heat capacity at constant pressure of the airflow, respectively. and These are the final temperature and initial temperature of the airflow, respectively. , The convective heat transfer coefficient is... The contact area between the heating structure and the airflow; temperature difference. , The heating temperature of the heating structure; M2: When At that time, the heating temperature of the heating structure , For temperature exchange efficiency, Dimensionless .

4. A rapid prototyping mold for plastics according to claim 1, characterized in that: The mold box (3) is equipped with an installation platform (6). A limiting plate (12) is provided on one side of the installation platform (6). The ejection mechanism is installed on the limiting plate (12). The rear end face of the limiting plate (12) is fixedly connected to the rear end face inside the mold box (3). A first mold (7) is provided on one side of the limiting plate (12). A second mold (8) is provided on one side of the first mold (7). One side of the second mold (8) is connected to one inner side of the mold box (3). A sealing strip (20) is installed on one side of the first mold (7). A sealing groove matching the sealing strip (20) is opened on one side of the second mold (8).

5. A rapid prototyping mold for plastics according to claim 1, characterized in that: The heat dissipation mechanism includes a cross-shaped mounting bracket installed in the mounting slot. A motor (9) is installed at one end of the mounting bracket, and a fan (10) is installed at the output end of the motor (9). The fan (10) is located at the other end of the mounting bracket, and the two fans (10) have opposite airflow directions.

6. A rapid prototyping mold for plastics according to claim 1, characterized in that: The ejection mechanism includes an electric push rod (11) installed in the middle of one side of the mounting platform (6). The output end of the electric push rod (11) passes through the limiting plate (12) and is connected to one side of the first mold (7). The four corners of one side of the limiting plate (12) are fixed with push rods (13). The other end of the push rod (13) passes through the first mold (7) and is flush with the inner side of the first mold (7). A spring (14) is sleeved on the outside of the push rod (13). One end of the spring (14) is connected to one side of the limiting plate (12), and the other end of the spring (14) is connected to one side of the first mold (7).

7. A rapid prototyping mold for plastics according to claim 1, characterized in that: The cooling mechanism includes a condensation tank (15) inside the first mold (7) and the second mold (8) and a condenser (21) installed inside the mold box (3). The front end of the condenser (21) is provided with a rearward-facing cooling fan, and the rear end of the condenser (21) is provided with an exhaust pipe (18). The other end of the exhaust pipe (18) passes through the rear end face of the mold box (3). The front end faces of the first mold (7) and the second mold (8) are provided with water inlets, and the rear end faces of the first mold (7) and the second mold (8) are provided with water outlets.

8. A rapid prototyping mold for plastics according to claim 7, characterized in that: The condenser (21) is connected to the water tank (5) via a metal hose at the water inlet end. The condenser (21) is connected to a water pump (19) via a metal hose at the drain end. The other end of the water pump (19) is connected to a first distributor (16). The first distributor (16) is connected to the water inlets of the first mold (7) and the second mold (8) via two metal hoses. The drain outlets of the first mold (7) and the second mold (8) are both connected to a second distributor (17) via metal hoses. A water pipe facing the inside of the water tank (5) is installed at the bottom of the second distributor (17). The first distributor (16), the second distributor (17) and the water pump (19) are all installed on the top surface of the base (1).

9. A rapid prototyping mold for plastics according to claim 5, characterized in that: An air intake assembly is provided at the position of the fan (10) at the air inlet. The air intake assembly includes a concave frame (22). A number of evenly distributed limiting blocks (23) are integrally formed on one side of the outer wall of the concave frame (22). An annular plate is provided inside the mold box (3) at the position corresponding to the limiting block (23). An extrusion gear (24) is rotatably connected inside the mold box (3) at the position corresponding to the concave frame (22).

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