A multi-channel cooling device for an automobile injection mold

Abstract

The utility model discloses a kind of automobile injection mould multi-channel cooling devices, including automobile injection mould main body, the inside of automobile injection mould main body is provided with cooling zone a, cooling zone b and cooling zone c from bottom to top;Cooling body a is equipped at the cooling zone a place, cooling body b is equipped at the cooling zone b place, cooling gas spray head is equipped at the cooling zone c place;The automobile injection mould multi-channel cooling device is provided with cooling zone a, cooling zone b and cooling zone c from bottom to top inside automobile injection mould main body, and cooling body a, cooling body b and cooling body c are correspondingly equipped.Cooling zone structure of this layered setting, can be accurately cooled to the heat condition of different areas inside mould.Each layer cooling zone's cold gas pipe outer wall is equipped with cooling gas spray head, can be evenly sprayed to corresponding cooling area with cold gas, effectively solve the problem of uneven cooling caused by traditional single channel cooling.

Description

Technical Field

[0001] This utility model relates to the field of automotive injection mold technology, specifically to a multi-channel cooling device for automotive injection molds. Background Technology

[0002] In the automotive manufacturing industry, injection molds are key equipment for producing automotive parts, and their cooling effect directly affects the molding quality, production efficiency, and mold lifespan. Currently, most traditional automotive injection mold cooling methods employ single-channel cooling or localized cooling structures. However, automotive injection molds typically have complex structures, with significant differences in heat distribution across different areas within the mold. Single-channel cooling is insufficient to achieve uniform and rapid cooling across all areas of the mold. In actual production processes, traditional cooling devices often suffer from low cooling efficiency. Due to untimely or uneven cooling, injection-molded parts are prone to defects such as warping, deformation, and shrinkage marks, seriously affecting product quality and increasing scrap rates. At the same time, longer cooling times extend production cycles and reduce production efficiency, failing to meet the demands of large-scale, high-efficiency production in the automotive manufacturing industry. Furthermore, existing cooling devices have shortcomings in the sealing of pipe connections. During the cooling process, cold air or coolant is prone to leakage at the connections, which not only wastes energy but also affects the stability of the cooling effect. Leaking cold air or coolant may also adversely affect equipment and the working environment around the mold, increasing safety hazards and maintenance costs during production. Therefore, developing a cooling device for automotive injection molds that can achieve uniform cooling in multiple areas and has good sealing performance has become an urgent need in the industry. Utility Model Content

[0003] The purpose of this invention is to provide a multi-channel cooling device for automotive injection molds to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-channel cooling device for automotive injection molds, comprising an automotive injection mold body, wherein cooling zones a, b, and c are arranged from bottom to top inside the automotive injection mold body; a cooling body a is installed at cooling zone a, a cooling body b is installed at cooling zone b, and a cold air nozzle is installed at cooling zone c; a cold air pipe is installed at the upper end of each of the cooling zones a, b, and c, and a cold air nozzle is installed on the outer wall of the cold air pipe; a fan pipe is installed at the end of each layer of the cold air pipe extending to the outside of the automotive injection mold body, and a sealing cap is installed between the fan pipe and the cold air pipe.

[0005] In a preferred embodiment of the multi-channel cooling device for automotive injection molds according to this utility model, the sealing cover is fitted onto the outside of the cooling air pipe, the fan pipe is inserted into the inside of the sealing cover, a sealing component is assembled inside the sealing cover, and the sealing component is fitted onto the outside of the fan pipe.

[0006] As a preferred embodiment of the multi-channel cooling device for automotive injection molds of this utility model, the outer wall of the fan pipe is provided with external threads, the inner wall of the sealing cover is provided with internal threads, the external threads and internal threads are matched, and a limiting ring plate is provided at the end of the cooling pipe located inside the sealing cover.

[0007] In a preferred embodiment of the multi-channel cooling device for automotive injection molds according to this utility model, the sealing assembly includes a rubber ring a and a rubber ring b sleeved on the outside of the fan pipe, and rubber blocks are installed at the edges between the rubber ring a and the rubber ring b.

[0008] As a preferred embodiment of the multi-channel cooling device for automotive injection molds according to this utility model, the top of the automotive injection mold body is equipped with a top cover, a drain pump is installed at the center of the top of the top cover, and a water inlet pump is installed at the center of the bottom of the automotive injection mold body.

[0009] As a preferred embodiment of the multi-channel cooling device for automotive injection molds according to this utility model, the top of the top cover is provided with a maintenance port, and a sealing door is hinged to the maintenance port. A sensor is mounted on the top cover.

[0010] As a preferred embodiment of the multi-channel cooling device for automotive injection molds according to this utility model, the bottom end of the main body of the automotive injection mold is equipped with a support frame.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the multi-channel cooling device for automotive injection molds has a reasonable structural design; This multi-channel cooling device for automotive injection molds features three cooling zones (A, B, and C) arranged from bottom to top inside the mold body, each corresponding to a cooling body (A, B, and C). This layered multi-zone structure allows for precise cooling of different areas within the mold. Each cooling zone's cooling pipe is equipped with a cooling nozzle, which evenly sprays cool air onto the corresponding cooling area, effectively solving the problem of uneven cooling caused by traditional single-channel cooling. Simultaneous cooling across multiple zones significantly reduces cooling time and improves efficiency, helping to reduce defects in parts caused by improper cooling and enhancing product molding quality. Attached Figure Description

[0012] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention; Figure 2This is a side sectional view of the present invention. Figure 3 This is a schematic diagram of the fan pipe, sealing cover, and cooling pipe of this utility model; Figure 4 This is a schematic diagram of the sealing component of this utility model.

[0013] In the diagram: 1. Main body of automotive injection mold; 2. Top cover; 3. Drain pump; 4. Sealing door; 5. Water inlet pump; 6. Sensor; 7. Cooling zone c; 8. Cooling zone b; 9. Cooling zone a; 10. Air duct; 11. Sealing cover; 12. Fan duct; 13. Support frame; 14. Air nozzle; 15. Cooling body b; 16. Cooling body a; 17. Sealing assembly; 18. Limiting ring plate; 19. Internal thread; 20. External thread; 21. Rubber ring a; 22. Rubber ring b; 23. Rubber block. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 This utility model provides a technical solution: In this technical solution, a multi-channel cooling device for automotive injection molds includes an automotive injection mold body 1. The interior of the automotive injection mold body 1 is provided with cooling zones a9, b8, and c7 from bottom to top. Cooling body a16 is installed in cooling zone a9, cooling body b15 is installed in cooling zone b8, and a cold air nozzle 14 is installed in cooling zone c7. Cold air pipes 10 are installed at the upper ends of cooling zones a9, b8, and c7, and cold air nozzles 14 are installed on the outer walls of the cold air pipes 10. Each layer of cold air pipes 10 extends to the outside of the automotive injection mold body 1 and is then fitted with a fan pipe 12. A sealing cap 11 is installed between the fan pipe 12 and the cold air pipe 10.

[0016] Cooling zones a, b, and c are arranged in layers along the height of the mold body, with each layer corresponding to a specific temperature range. For example, for some large automotive injection molds, the lower cooling zone a may primarily be responsible for cooling the thick-walled area at the bottom of the mold. This area has a high plastic content and concentrated heat, so the cooling body a16 can be designed as a highly efficient heat dissipation structure. For instance, using a copper alloy with a high thermal conductivity of 380-400 W / (m·K) can transfer heat to the cooling air in the cooling pipe 10 more quickly compared to ordinary aluminum alloy (thermal conductivity approximately 200 W / (m·K)). The cooling air nozzles 14 on the cooling pipe 10 can be arranged according to the shape of the cooling zone and the heat distribution. For example, in cooling zone a, the density of cooling air nozzles 14 can be appropriately increased for areas with concentrated heat, ensuring 8-10 nozzles per square meter to guarantee uniform cooling. The fan duct 12 is used to supply cold air to the air duct 10. Its diameter needs to be calculated according to the cooling capacity required by the cooling zone. Generally, for medium-sized automotive injection molds, the diameter of the fan duct 12 can be 50-80mm to ensure sufficient cold air flow. Insulation panels are installed between adjacent cooling zones. These panels can be made of insulating materials such as ceramic fiber, with a thermal conductivity of less than 0.1 W / (m·K), effectively reducing heat transfer. Simultaneously, temperature sensors can be added to monitor the temperatures inside cooling zones a, b, and c in real time, facilitating precise control of the cooling process.

[0017] In some technical solutions, the outer wall of the fan pipe 12 is provided with an external thread 20, the inner wall of the sealing cover 11 is provided with an internal thread 19, the external thread 20 and the internal thread 19 are matched, and the end of the air cooling pipe 10 located inside the sealing cover 11 is provided with a limiting ring plate 18.

[0018] The pitch design of the external thread 20 and internal thread 19 needs to consider both the tightness of the connection and the ease of installation and disassembly. For general industrial applications, the pitch can be set to 2-3mm, which ensures good sealing performance without making the installation process too strenuous. The function of the limiting ring plate 18 is to prevent the air conditioning pipe 10 from being excessively inserted into the sealing cap 11, while also enhancing the structural strength of the connection. The thickness of the limiting ring plate 18 can be designed to be 5-8mm, and the material should be the same as that of the air conditioning pipe 10. If stainless steel is used, it can ensure that it will not be damaged by corrosion during long-term use. A sealing gasket should be added to the contact surface between the sealing cover 11 and the fan pipe 12 and the air conditioning pipe 10 to further improve the sealing performance. The sealing gasket can be made of rubber, such as nitrile rubber, which has good oil resistance and sealing performance. The Shore hardness can be selected as 60-70A, which can ensure a good sealing effect and has a certain degree of elasticity, making it easy to install and adapt to different pipe diameters.

[0019] In some technical solutions, the sealing assembly 17 includes a rubber ring a22 and a rubber ring b21 that are sleeved on the outside of the fan pipe 12, and a rubber block 23 is installed at the edge between the rubber ring a22 and the rubber ring b21.

[0020] The thickness of rubber rings a22 and b21 is generally 3-5mm, and their inner diameter is slightly smaller than the outer diameter of the fan pipe 12 to ensure a tight fit. Rubber block 23 further fills the gaps and enhances the seal; its shape can be triangular or trapezoidal, with a height of 2-3mm. The rubber material of rubber rings a22, b21, and rubber block 23 should have good low-temperature resistance, such as using silicone rubber, maintaining good elasticity and sealing performance within a temperature range of -40℃ to 200℃, ensuring that the sealing components can function normally even at low temperatures during cold air delivery. Anti-slip textures can be provided on the inner surfaces of rubber rings a22 and b21 to increase friction with the outer wall of the fan pipe 12 and prevent displacement of the sealing assembly during vibration or pressure changes. The depth of the anti-slip textures can be 0.5-1mm, and the shape can be wavy or grid-like. Additionally, for ease of installation and maintenance, an installation handle or pull ring can be provided on the sealing assembly 17 for convenient installation and disassembly by operators.

[0021] In some technical solutions, a top cover 2 is installed at the top of the main body 1 of the automobile injection mold, a drain pump 3 is installed at the center of the top of the top of the top cover 2, and a water inlet pump 5 is installed at the center of the bottom of the main body 1 of the automobile injection mold.

[0022] The power of drain pump 3 and inlet pump 5 needs to be determined based on the volume of the mold body and the coolant circulation volume. For a medium-sized automotive injection mold with a volume of 1-2 cubic meters, the flow rate of inlet pump 5 can be designed to be 10-15 cubic meters per hour, the head to be 10-15 meters, and the power to be generally 1.5-2.2 kW; the flow rate and head of drain pump 3 can be slightly less than those of inlet pump 5, with a flow rate of 8-12 cubic meters per hour, a head to be 8-12 meters, and a power to be 1.1-1.5 kW. This ensures that the coolant forms a stable circulation within the mold body, achieving a good cooling effect. A filter should be installed at the inlet of the water pump 5 to prevent impurities in the coolant from entering the mold cooling system, clogging the pipes, or affecting the cooling effect. The filter can be a stainless steel mesh with a mesh size of 0.1-0.2mm, which can effectively filter out larger particles. Simultaneously, a check valve can be installed at the outlet of the drain pump 3 to prevent coolant backflow and ensure normal system operation.

[0023] In some technical solutions, a maintenance opening is provided at the top of the top cover 2, and a sealing door 4 is hinged to the maintenance opening. A sensor 6 is installed on the top cover 2.

[0024] The size of the maintenance port should be determined based on the size of the components inside the mold that require maintenance. Generally, it is a square with sides of 300-500mm or a circle with a diameter of 300-400mm, allowing operators to easily insert their hands or small maintenance tools for maintenance. A sealing strip should be used to seal the gap between the sealing door 4 and the top cover 2 to prevent dust, moisture, etc., from entering the mold. The sensor 6 can be a temperature sensor or a pressure sensor. The temperature sensor can monitor the temperature inside the mold in real time with an accuracy of ±0.5℃; the pressure sensor can monitor the pressure of the coolant inside the mold with an accuracy of ±0.05MPa, allowing for timely detection of abnormalities in the cooling system. A protective pad made of rubber, 5-8mm thick, can be installed around the edge of the maintenance port to prevent operators from being injured by collisions during maintenance. Simultaneously, sensor 6 should be equipped with a data transmission module to transmit the monitored data to the control system in real time, allowing operators to remotely monitor the operating status of the mold cooling system.

[0025] In some technical solutions, a support frame 13 is assembled at the bottom of the main body 1 of the automotive injection mold.

[0026] The height of the support frame 13 is generally determined based on the mold's installation location and ease of operation, typically 500-800mm. It can be made of metal, such as Q235 carbon steel, with a galvanized surface to enhance its corrosion resistance. The structural design of the support frame 13 should ensure sufficient stability. A triangular or rectangular frame structure can be used, and its base area should be calculated based on the weight and dimensions of the mold body to ensure that it will not shake or tip over during mold operation. For example, for a medium-sized automotive injection mold weighing 2-3 tons, the base area of ​​the support frame 13 can be 1-1.5 square meters. Vibration damping pads can be installed at the bottom of the support frame 13. The damping pads are made of rubber or polyurethane and are 10-20mm thick, which can effectively reduce the impact of vibrations generated during mold operation on surrounding equipment and the working environment. At the same time, leveling bolts can be installed on the support frame 13 to facilitate operators in adjusting the level of the mold body and ensuring the stability of the mold during operation.

[0027] I. Overall Work Process The multi-channel cooling device for automotive injection molds operates around the mold's cooling requirements. Through multi-area coordinated cooling, sealing, coolant circulation, and status monitoring, it achieves efficient and precise cooling of the automotive injection mold. The specific process is as follows: After the injection mold completes the injection operation, the cooling system is activated. A fan delivers cool air to the cooling air pipe 10 through fan pipe 12, and the cool air is evenly sprayed onto each cooling zone through cooling air nozzles. Simultaneously, the water inlet pump 5 and drain pump 3 are activated, driving the coolant to circulate within the mold to assist cooling. Sensor 6 monitors parameters such as internal mold temperature and pressure in real time to ensure cooling effectiveness. During cooling, a sealing structure prevents leakage of coolant and coolant. After cooling is complete, the relevant equipment is shut down. If maintenance is required, it is performed through the maintenance port on the top cover. II. Working principles of each core component (a) Multi-zone cooling system The cooling zones a9, b8, and c7 inside the mold body correspond to different mold areas. Cooling bodies a16, b15, and c14, with their high thermal conductivity, rapidly absorb heat from each area of ​​the mold. Cooling duct 10 receives cooling air from fan duct 12 and evenly sprays it onto the cooling zones through cooling nozzles 14 on the outer wall. Since the heat distribution varies in different cooling zones, the density of the cooling nozzles 14 is strategically arranged; for example, the nozzle density is higher in cooling zone a where heat is concentrated, achieving targeted cooling. Insulation plates between adjacent cooling zones effectively prevent heat crosstalk, allowing each cooling zone to independently maintain its set cooling temperature, improving cooling efficiency and uniformity. (II) Cold air delivery and sealing principle The cold air generated by the fan is transmitted through the fan duct 12 and enters the cold air duct 10 through the connection structure at the end of the fan duct 12 and the cold air duct 10. The external thread 20 on the outer wall of the fan duct 12 engages with the internal thread 19 on the inner wall of the sealing cover 11 to achieve a tight connection. The limiting ring plate 18 restricts the insertion depth of the cold air duct 10 to ensure connection stability. The sealing component 17 inside the sealing cover 11 plays a key sealing role. Rubber rings a22 and b21 are tightly fitted onto the outside of the fan duct 12, and their elastic deformation fills the gaps. The rubber block 23 further enhances the sealing effect, preventing cold air leakage at the connection and ensuring that cold air enters the cold air duct 10 for cooling to the maximum extent. (III) Coolant Circulation System The inlet pump 5 draws coolant from the outside and delivers it to the bottom of the mold body through pipelines. The coolant absorbs heat as it flows inside the mold and is then discharged from the top by the drain pump 3, forming a circulation. The filter at the inlet of the inlet pump 5 filters impurities from the coolant to prevent pipe blockage; the one-way valve at the outlet of the drain pump 3 prevents backflow of coolant and ensures stable circulation. The coolant circulation and the cooling air work together to accelerate the cooling rate of the mold and improve cooling efficiency. (iv) Condition monitoring and maintenance support Sensor 6 on the top cover 2 monitors the internal temperature and pressure of the mold in real time. The temperature sensor has an accuracy of ±0.5℃, and the pressure sensor has an accuracy of ±0.05MPa. The monitoring data is sent to the control system via a data transmission module, allowing operators to remotely monitor the cooling status and make timely adjustments if any abnormalities occur. During maintenance, the sealing door 4 is opened, and the internal components of the mold are inspected through the maintenance port. Protective pads at the edge of the maintenance port ensure operator safety, and the sealing strip of the sealing door 4 prevents debris from entering the mold. (v) Support and damping structure The support frame 13 adopts a stable frame structure to provide support for the mold body. The shock-absorbing pads at the bottom absorb the vibration generated by the mold operation through elastic deformation, reducing the impact on surrounding equipment and the environment. The leveling bolts can adjust the level of the mold body to ensure that the mold remains stable during the cooling process and avoid the impact of tilting on the cooling effect and the service life of the mold.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A multi-channel cooling device for automotive injection molds, comprising an automotive injection mold body (1), characterized in that, The interior of the main body (1) of the automobile injection mold is provided with cooling zone a (9), cooling zone b (8) and cooling zone c (7) from bottom to top. Cooling body a (16) is installed in cooling zone a (9), cooling body b (15) is installed in cooling zone b (8), and air nozzle (14) is installed in cooling zone c (7). The upper ends of cooling zones a (9), b (8) and c (7) are all equipped with air pipes (10), and the outer walls of the air pipes (10) are equipped with air nozzles (14). Each layer of the air cooling pipe (10) extends to the outside of the automotive injection mold body (1) and is then fitted with a fan pipe (12), and a sealing cap (11) is fitted between the fan pipe (12) and the air cooling pipe (10).

2. The multi-channel cooling device for automotive injection molds according to claim 1, characterized in that, The sealing cover (11) is fitted onto the outside of the air conditioning pipe (10), and the fan pipe (12) is inserted into the inside of the sealing cover (11). The sealing cover (11) is equipped with a sealing component (17), which is fitted onto the outside of the fan pipe (12).

3. The multi-channel cooling device for automotive injection molds according to claim 2, characterized in that, The outer wall of the fan pipe (12) is provided with an external thread (20), and the inner wall of the sealing cover (11) is provided with an internal thread (19). The external thread (20) and the internal thread (19) are matched together, and the end of the air cooling pipe (10) located inside the sealing cover (11) is provided with a limiting ring plate (18).

4. The multi-channel cooling device for automotive injection molds according to claim 2, characterized in that, The sealing assembly (17) includes a rubber ring a (22) and a rubber ring b (21) sleeved on the outside of the fan pipe (12), and a rubber block (23) is installed at the edge between the rubber ring a (22) and the rubber ring b (21).

5. The multi-channel cooling device for automotive injection molds according to claim 1, characterized in that, The top of the main body (1) of the automobile injection mold is equipped with a top cover (2), a drain pump (3) is installed at the center of the top of the top of the top cover (2), and a water inlet pump (5) is installed at the center of the bottom of the main body (1) of the automobile injection mold.

6. The multi-channel cooling device for automotive injection molds according to claim 5, characterized in that, The top of the top cover (2) is provided with a maintenance opening, and a sealing door (4) is hinged at the maintenance opening. A sensor (6) is installed on the top cover (2).

7. The multi-channel cooling device for automotive injection molds according to claim 1, characterized in that, The bottom end of the main body (1) of the automobile injection mold is equipped with a support frame (13).

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