Injection mold with air cooling device
By designing an air-cooling device in the injection mold and utilizing structures such as the first and second air ducts and air guide plates, the shortcomings of traditional cooling methods are solved, achieving efficient and uniform cooling of the mold cavity, thereby improving product quality and production efficiency.
Patent Information
- Application Number
- CN202520310187.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-25
AI Technical Summary
Traditional water cooling methods for injection molds are difficult to achieve uniform cooling in different parts of the mold, resulting in insufficient cooling in some areas and affecting the quality of the molded products; air cooling methods are inefficient and the airflow direction is dispersed, making it difficult to improve the cooling effect.
The design incorporates an air-cooled injection mold, employing a first and a second air duct to blow air onto the two side walls of the mold cavity. The first and second fans enhance the concentration of air pressure, while guide plates and partitions guide the airflow to ensure uniform distribution of cooling airflow and efficient heat transfer.
It enables flexible multi-directional cooling of the mold cavity, improves cooling efficiency and uniformity, and significantly enhances the quality and efficiency of molded products.
Smart Images
Figure CN223934089U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of injection mold technology, and more particularly to an injection mold with an air-cooling device. Background Technology
[0002] Injection molds, as essential tools for molding and processing plastic products, are widely used in various fields of industrial production. They are used to inject molten plastic into a mold cavity, where it cools to form the desired plastic product. However, the molding efficiency and product quality of injection molds are greatly affected by mold temperature control; therefore, the mold temperature control system is a crucial component of injection mold design.
[0003] Traditional injection molds often employ water cooling for temperature control. Water cooling channels within the mold are used to cool the mold and ensure the dimensional stability and surface quality of the molded plastic product. However, water cooling typically involves pouring water from top to bottom, circulating it through the cooling channels to gradually cool the plastic within the mold cavity. However, because water cannot flow upwards against gravity, the design of the cooling channels is limited, making it difficult to achieve uniform cooling across different parts of the mold. This design limitation often results in insufficient cooling in certain areas of the mold, thus affecting the overall quality of the molded product.
[0004] To overcome the limitations of water cooling, air cooling technology can be used to control the cooling of molds. Air cooling offers greater flexibility in cooling direction, enabling bottom-up, lateral, or multi-directional cooling. However, the airflow direction in air cooling is not easily concentrated, which can lead to insufficient cooling efficiency. Furthermore, the air pressure is typically low, requiring increased air velocity to raise the pressure, which may not only increase energy consumption but also reduce cooling effectiveness due to airflow dispersion.
[0005] Therefore, it is necessary to propose an injection mold with an air-cooling device. By optimizing the concentration of air pressure, the cooling airflow can more effectively act on the outer part of the mold cavity inside the mold. At the same time, the air pressure is increased near the plastic part inside the mold cavity to accelerate the cooling process, thereby effectively improving the cooling efficiency and molding quality of the mold. Utility Model Content
[0006] The purpose of this application is to overcome the shortcomings of the prior art and propose an injection mold with an air-cooling device. By improving the concentration of air pressure, the air pressure is effectively increased at the plastic position near the mold cavity, thereby achieving a more efficient and uniform cooling effect, improving molding efficiency and product quality.
[0007] This application is achieved through the following technical solution:
[0008] This application proposes an injection mold with an air-cooling device, including an air-driving mechanism and a housing. The housing has an air duct and a mold cavity for injecting molten plastic. The air-driving mechanism is located inside the air duct. The housing has a first outer side wall and a second outer side wall at the mold cavity position, with the first outer side wall and the second outer side wall facing each other.
[0009] The air duct includes a first air duct and a second air duct. One end of the first air duct is in contact with the first outer wall, and the other end is connected to the airflow outside the shell. The cross-sectional area of the first air duct decreases in the direction towards the first outer wall. One end of the second air duct is in contact with the second outer wall, and the other end is connected to the airflow outside the shell. The cross-sectional area of the second air duct decreases in the direction towards the second outer wall.
[0010] The air-driving mechanism includes a first fan and a second fan. The first fan is disposed on the first air duct to blow the airflow of the first air duct toward the first outer wall. The second fan is disposed on the second air duct to blow the airflow of the second air duct toward the second outer wall.
[0011] In one embodiment of this application, the mold cavity is located between the first air duct and the second air duct.
[0012] In one embodiment of this application, the air duct is provided with a first air outlet and a second air outlet. The first air outlet is connected to both the first air duct and the second air duct, and the second air outlet is connected to both the first air duct and the second air duct. The mold cavity is provided with an opening. The opening, the first air outlet, and the second air outlet are all arranged in the same direction, and the first air outlet and the second air outlet are located on both sides of the opening.
[0013] In one embodiment of this application, a guide vane is provided between the first air duct and the second air duct, and the airflow in the first air duct and the second air duct flows to the first air outlet or the second air outlet through the guide vane.
[0014] In one embodiment of this application, the air guide plate is connected to the first outer side wall and the second outer side wall, and the air guide plate is made of a material with high thermal conductivity.
[0015] In one embodiment of this application, the first air duct and the second air duct are both arranged along a first direction, and the cavity opening, the first air outlet and the second air outlet are both arranged along a second direction, wherein the first direction is perpendicular to the second direction.
[0016] In one embodiment of this application, both the first air duct and the second air duct are provided with a plurality of first partition plates, and each first partition plate is arranged along the first direction.
[0017] In one embodiment of this application, both the first air duct and the second air duct are provided with a plurality of second partition plates, and each second partition plate is close to the air guide plate.
[0018] In one embodiment of this application, the first partition plate is perpendicular to the second partition plate.
[0019] In one embodiment of this application, the housing is provided with a first air inlet and a second air inlet, the first air duct is connected to the first air inlet, the first fan is close to the first air inlet, the second air duct is connected to the second air inlet, and the second fan is close to the second air inlet.
[0020] Compared with the prior art, the beneficial effects of this application are:
[0021] 1. The shell has a first outer side wall and a second outer side wall at the mold cavity location, with the first and second outer side walls facing away from each other. One end of a first air duct contacts the first outer side wall, and the other end communicates with the airflow outside the shell. One end of a second air duct contacts the second outer side wall, and the other end communicates with the airflow outside the shell. A first fan is installed on the first air duct to blow the airflow from the first air duct toward the first outer side wall, and a second fan is installed on the second air duct to blow the airflow from the second air duct toward the second outer side wall. The cross-sectional area of the first air duct decreases towards the first outer side wall, and the cross-sectional area of the second air duct decreases towards the second outer side wall, causing the airflow to form a compression effect as it approaches the outer side wall of the mold, thereby improving the concentration of air pressure. The first and second fans are respectively installed inside the first and second air ducts, blowing the airflow toward the first and second outer side walls respectively, forming an independent and uniform cooling effect. It overcomes the limitations of water cooling in terms of cooling direction, achieves flexible multi-directional cooling, and solves the problem of dispersed airflow in traditional air cooling. This allows the cooling airflow to be concentrated on the first and second outer walls of the mold cavity, significantly improving cooling efficiency and uniformity.
[0022] 2. An air guide plate is arranged between the first and second air ducts and is connected to the first and second outer side walls. The air guide plate is made of a material with high thermal conductivity. It is used to guide the airflow in the air ducts to flow to the first or second air outlet through a reasonable path. Through its high thermal conductivity, it accelerates the heat transfer and dissipation between the first and second outer side walls. The heat in the mold cavity is conducted to the air guide plate. The airflow from the first and second air ducts blows onto the air guide plate and then onto the first or second air outlet, cooling the heat of the air guide plate and thus cooling the mold cavity.
[0023] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 A perspective view of an injection mold with an air-cooling device provided in an embodiment of this application;
[0026] Figure 2 A top view of an injection mold with an air-cooling device provided in an embodiment of this application;
[0027] Figure 3 This is a sectional view of P1-P1;
[0028] Figure 4 This is a sectional view of P2-P2;
[0029] Figure 5 A side view of an injection mold with an air-cooling device provided in an embodiment of this application;
[0030] Figure 6 This is a sectional view of P3-P3.
[0031] Explanation of reference numerals in the attached figures:
[0032] 10. Injection mold with air cooling device; 110. First fan; 120. Second fan; 200. Housing; 211. First air outlet; 212. Second air outlet; 213. First air inlet; 214. Second air inlet; 215. First air duct; 216. Second air duct; 220. Mold cavity; 221. Cavity opening; 230. First outer side wall; 240. Second outer side wall; 250. Air guide plate; 260. First partition plate; 270. Second partition plate. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0034] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in 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 skilled in the art without creative effort are within the scope of protection of this application.
[0035] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.
[0036] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.
[0038] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.
[0039] Please refer to Figures 1 to 6 This application proposes an injection mold 10 with an air-cooling device, including an air-driving mechanism (not shown) and a housing 200. The housing 200 has an air duct (not shown) and a mold cavity 220 for injecting molten plastic. The air-driving mechanism is disposed in the air duct. The housing 200 has a first outer side wall 230 and a second outer side wall 240 at the position of the mold cavity 220, and the first outer side wall 230 and the second outer side wall 240 are arranged back to back. The air duct includes a first air duct 215 and a second air duct 216. One end of the first air duct 215 contacts the first outer side wall 230, and the other end is connected to the airflow outside the housing 200. The first air duct 215 has a smaller cross-sectional area towards the first outer wall 230. One end of the second air duct 216 is in contact with the second outer wall 240, and the other end is connected to the airflow outside the housing 200. The cross-sectional area of the second air duct 216 decreases towards the second outer wall 240. The air driving mechanism includes a first fan 110 and a second fan 120. The first fan 110 is disposed on the first air duct 215 to blow the airflow of the first air duct 215 toward the first outer wall 230. The second fan 120 is disposed on the second air duct 216 to blow the airflow of the second air duct 216 toward the second outer wall 240.
[0040] Specifically, the mold cavity 220 includes a first outer side wall 230 and a second outer side wall 240, which are arranged back-to-back. The air ducts include a first air duct 215 and a second air duct 216, which are respectively connected to the first outer side wall 230 and the second outer side wall 240. The cross-sectional area of the first air duct 215 decreases towards the first outer side wall 230, and the cross-sectional area of the second air duct 216 decreases towards the second outer side wall 240. The other end is connected to the external airflow of the housing 200. The air duct structure is designed to shrink towards the corresponding outer side wall, so that the airflow forms a compression effect when it approaches the outer side wall of the mold, thereby improving the concentration of air pressure. The air driving mechanism consists of a first fan 110 and a second fan 120, which are respectively located in the first air duct 215 and the second air duct 216, and are used to blow the airflow towards the first outer side wall 230 and the second outer side wall 240, forming an independent and uniform cooling effect.
[0041] In summary, the injection mold 10 with air cooling device overcomes the limitations of water cooling in the cooling direction, achieves flexible multi-directional cooling, and solves the problem of dispersed airflow in traditional air cooling. This allows the cooling airflow to be concentrated on the key area of the mold cavity 220, significantly improving cooling efficiency and uniformity.
[0042] Please refer to Figure 6 In one embodiment, the mold cavity 220 is located between the first air duct 215 and the second air duct 216.
[0043] Specifically, the mold cavity 220 is located between the first air channel 215 and the second air channel 216. The airflow generated by the air-driving mechanism can directly act on the outer walls of both sides of the mold cavity 220 through the first air channel 215 and the second air channel 216 respectively. This arrangement ensures that both sides of the mold cavity 220 can receive symmetrical cooling from the airflow, thereby further improving the uniformity of mold cooling. Especially when it is necessary to rapidly cool the molten plastic inside the mold cavity 220, it can effectively reduce the temperature difference inside the mold and improve cooling efficiency.
[0044] Please refer to Figure 3 and Figure 6 In one embodiment, the air duct has a first air outlet 211 and a second air outlet 212. The first air outlet 211 is connected to both the first air duct 215 and the second air duct 216. The second air outlet 212 is connected to both the first air duct 215 and the second air duct 216. The mold cavity 220 has a cavity opening 221. The cavity opening 221, the first air outlet 211 and the second air outlet 212 are all arranged in the same direction, and the first air outlet 211 and the second air outlet 212 are located on both sides of the cavity opening 221.
[0045] Specifically, the first air outlet 211 is connected to both the first air duct 215 and the second air duct 216. After passing through the first air duct 215 and the second air duct 216, the airflow can be discharged from the first air outlet 211 and the second air outlet 212 respectively. The mold cavity 220 has an opening 221, which, along with the first air outlet 211 and the second air outlet 212, faces the same direction. The first air outlet 211 and the second air outlet 212 are located on opposite sides of the opening 221. This structural design ensures that the cooling airflow is evenly distributed on both sides of the mold cavity 220 during discharge and maintains the same flow direction as the opening 221 of the mold cavity 220.
[0046] Please refer to Figure 3 and Figure 4 In one embodiment, a guide plate 250 is provided between the first air duct 215 and the second air duct 216, and the airflow in the first air duct 215 and the second air duct 216 flows through the guide plate 250 to the first air outlet 211 or the second air outlet 212.
[0047] Specifically, the air guide plate 250 is arranged between the first air duct 215 and the second air duct 216 to guide the airflow in the air duct to the first air outlet 211 or the second air outlet 212 through a reasonable path.
[0048] Please refer to Figure 3 , Figure 4 and Figure 6 In one embodiment, the air guide plate 250 is connected to the first outer side wall 230 and the second outer side wall 240, and the air guide plate 250 is made of a high thermal conductivity material.
[0049] Specifically, the air guide plate 250 is connected to the first outer side wall 230 and the second outer side wall 240, and is made of a material with high thermal conductivity. This design not only allows the air guide plate 250 to make close contact with the outer side wall of the mold while guiding the airflow, but also accelerates the heat transfer and dissipation of the first outer side wall 230 and the second outer side wall 240 through its high thermal conductivity. The heat at the mold cavity 220 will be conducted to the air guide plate 250, and the airflow from the first air duct 215 and the second air duct 216 blows onto the air guide plate 250, which can cool the heat of the air guide plate 250 more efficiently.
[0050] Please refer to Figure 2 , Figure 5 and Figure 6 In one embodiment, the first air duct 215 and the second air duct 216 are both arranged along the first direction, and the cavity opening 221, the first air outlet 211 and the second air outlet 212 are both arranged along the second direction, with the first direction being perpendicular to the second direction.
[0051] Specifically, the first air duct 215 and the second air duct 216 are both arranged along the first direction, while the cavity opening 221, the first air outlet 211, and the second air outlet 212 of the mold cavity 220 are arranged along the second direction, and the first direction is perpendicular to the second direction. Through this vertical design, the airflow in the air duct can be guided to the cavity opening 221, the first air outlet 211, and the second air outlet 212 more efficiently through the air guide plate 250 when flowing along the first direction. The airflow from the first air duct 215 and the second air duct 216 blows onto the air guide plate 250, which can more efficiently carry the heat of the air guide plate 250 out of the first air outlet 211 and the second air outlet 212, thereby achieving smooth airflow redirection and discharge.
[0052] Please refer to Figure 6 In one embodiment, both the first air duct 215 and the second air duct 216 are provided with a plurality of first partition plates 260, and each first partition plate 260 is provided along a first direction.
[0053] Specifically, each first partition plate 260 is arranged along a first direction. By adding first partition plates 260 in the air duct, these partition plates can divide the airflow in the air duct into multiple relatively independent flow channels, thereby guiding the airflow to flow stably along the first direction.
[0054] Please refer to Figure 6 In one embodiment, both the first air duct 215 and the second air duct 216 are provided with a plurality of second partition plates 270, and each second partition plate 270 is close to the air guide plate 250. The first partition plate 260 is perpendicular to the second partition plate 270.
[0055] Specifically, each second partition 270 is close to the air guide plate 250. The first partition 260 is perpendicular to the second partition 270. This causes the cross-sectional area of the first air duct 215 to decrease in the direction towards the first outer wall 230, and the cross-sectional area of the second air duct 216 to decrease in the direction towards the second outer wall 240.
[0056] Please refer to Figure 3 In one embodiment, the housing 200 has a first air inlet 213 and a second air inlet 214, a first air duct 215 is connected to the first air inlet 213, a first fan 110 is close to the first air inlet 213, a second air duct 216 is connected to the second air inlet 214, and a second fan 120 is close to the second air inlet 214.
[0057] Specifically, the first fan 110 is positioned near the first air inlet 213, and the second fan 120 is positioned near the second air inlet 214. This allows external airflow to be quickly drawn into the duct and driven towards the guide plate.
[0058] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An injection mold with an air-cooling device, comprising an air-driving mechanism and a housing, wherein the housing has an air duct and a mold cavity for injecting molten plastic, and the air-driving mechanism is disposed within the air duct, characterized in that, The housing is provided with a first outer side wall and a second outer side wall at the mold cavity position, with the first outer side wall and the second outer side wall arranged back to back; The air duct includes a first air duct and a second air duct. One end of the first air duct is in contact with the first outer wall, and the other end is connected to the airflow outside the shell. The cross-sectional area of the first air duct decreases in the direction towards the first outer wall. One end of the second air duct is in contact with the second outer wall, and the other end is connected to the airflow outside the shell. The cross-sectional area of the second air duct decreases in the direction towards the second outer wall. The air-driving mechanism includes a first fan and a second fan. The first fan is disposed on the first air duct to blow the airflow of the first air duct toward the first outer wall. The second fan is disposed on the second air duct to blow the airflow of the second air duct toward the second outer wall.
2. The injection mold with an air-cooling device as described in claim 1, characterized in that, The mold cavity is located between the first air duct and the second air duct.
3. The injection mold with an air-cooling device as described in claim 1, characterized in that, The air duct has a first air outlet and a second air outlet. The first air outlet is connected to both the first air duct and the second air duct. The second air outlet is also connected to both the first air duct and the second air duct. The mold cavity has an opening. The opening, the first air outlet, and the second air outlet are all oriented in the same direction, and the first air outlet and the second air outlet are located on opposite sides of the opening.
4. The injection mold with an air-cooling device as described in claim 3, characterized in that, An air guide plate is provided between the first air duct and the second air duct, and the airflow in the first air duct and the second air duct flows to the first air outlet or the second air outlet through the air guide plate.
5. The injection mold with an air-cooling device as described in claim 4, characterized in that, The air guide plate is connected to the first outer side wall and the second outer side wall, and the air guide plate is made of a material with high thermal conductivity.
6. The injection mold with an air-cooling device as described in claim 4, characterized in that, Both the first air duct and the second air duct are arranged along a first direction, and the cavity opening, the first air outlet and the second air outlet are arranged along a second direction, with the first direction being perpendicular to the second direction.
7. The injection mold with an air-cooling device as described in claim 6, characterized in that, Both the first air duct and the second air duct are provided with multiple first partition plates, and each first partition plate is arranged along the first direction.
8. The injection mold with an air-cooling device as described in claim 7, characterized in that, Both the first air duct and the second air duct are provided with multiple second partition plates, and each second partition plate is close to the air guide plate.
9. The injection mold with an air-cooling device as described in claim 8, characterized in that, The first partition plate is perpendicular to the second partition plate.
10. The injection mold with an air-cooling device as described in claim 3, characterized in that, The housing has a first air inlet and a second air inlet. The first air duct is connected to the first air inlet. The first fan is close to the first air inlet. The second air duct is connected to the second air inlet. The second fan is close to the second air inlet.