Injection mold with rapid cooling structure
A dual cooling system with air and liquid cooling and temperature regulation addresses inefficient single-mode cooling in injection molding, ensuring rapid and stable cooling for improved production efficiency.
Patent Information
- Application Number
- CN202422067304.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-26
AI Technical Summary
The cooling method of existing injection molds is single, resulting in poor cooling effect and inaccurate temperature control of circulating coolant, making it impossible to achieve rapid cooling and stable heat dissipation.
The dual heat dissipation method of air-cooling and liquid-cooling is adopted. By setting heat dissipation holes, radiator blades and circulation hoses in the mold, combined with temperature sensors and solenoid valves, the liquid temperature is achieved accurately control and rapid cooling.
The rapid cooling of the mold is achieved, ensuring the stable temperature of the coolant, and improving the heat dissipation effect and production efficiency.
Smart Images
Figure CN223099823U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat dissipation of injection molds, in particular to an injection mold with a rapid cooling structure. Background Art
[0002] Heat dissipation of injection molds is a key link in the injection molding process. After the liquid plastic enters the molding cavity and is cooled and molded, a solid finished product can be obtained. Therefore, during the cooling and molding process, the mold needs to be heat-dissipated to speed up the molding speed and improve production efficiency.
[0003] Common cooling methods are air cooling and liquid cooling. Using a single cooling method has a relatively poor cooling effect and cannot achieve rapid cooling. Secondly, when using circulating liquid cooling, the coolant needs to be cooled before it can be recycled after returning to the cooling box. During this process, if there is only a single cavity in the cooling box, the refluxed high-temperature coolant will cause the overall coolant temperature in the cooling box to increase. In this case, the temperature of the coolant entering the mold cannot be accurately controlled, and a good liquid cooling effect cannot be achieved. Utility Model Content
[0004] The purpose of the utility model is to provide an injection mold with a rapid cooling structure to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: comprising a fixed mold, a movable mold and a cooling box, wherein the fixed mold and the movable mold are both provided with heat dissipation holes, and both ends of the heat dissipation holes are open structures, the heat dissipation hole openings are located at the lower ends of the fixed mold and the movable mold, and are connected with a circulation hose, the other end of the circulation hose is installed in the cooling box, the upper ends of the movable mold and the fixed mold are both fixed with radiator blades, a fan is fixed on the upper end of the fixed mold away from the movable mold, the cooling box is divided into an entry chamber, a cooling chamber and a heat preservation chamber by a partition, the cooling chamber is arranged between the entry chamber and the heat preservation chamber, the end of the circulation hose is plugged into the entry chamber and the cooling chamber, the partitions are fixed with connecting pipes, the connecting pipes are installed with solenoid valves, an aeration pipe is fixed to the bottom of the cooling chamber, and the upper end is an open structure.
[0006] Preferably, a temperature sensor is fixed in the cooling chamber, and a liquid level sensor is fixed above the inner wall of the cooling chamber. Both the liquid level sensor and the temperature sensor are electrically connected to the solenoid valve.
[0007] Preferably, a circulation pump is fixed on each of the circulation hoses.
[0008] Preferably, a dust cover is fixed inside the heat preservation chamber and outside the circulation hose.
[0009] Preferably, heat-conducting sheets are evenly and fixedly arranged in the fixed mold and the movable mold. The upper ends of the heat-conducting sheets extend out and are fixed on the radiator blades. The heat-conducting sheets are made of copper-aluminum alloy.
[0010] Preferably, the surface of the radiator blades is evenly provided with diversion grooves.
[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: dual cooling is carried out by means of air cooling and liquid cooling circulation to achieve the purpose of rapid cooling, and it is ensured that the cooling water is in a specified low temperature state when entering the heat dissipation holes, so that better heat absorption can be carried out, and the stability of the heat dissipation effect is ensured. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a schematic side-sectional structure view of an injection mold with a rapid cooling structure according to the utility model;
[0013] Figure 2 is a schematic internal structure view of the cooling box of an injection mold with a rapid cooling structure according to the utility model;
[0014] Figure 3 is a schematic combined structure view of the heat-conducting sheet and the radiator blade of an injection mold with a rapid cooling structure according to the utility model.
[0015] In the figure: 1, fixed mold; 2, movable mold; 3, cooling box; 31, partition board; 32, inlet chamber; 33, cooling chamber; 34, heat preservation chamber; 35, connecting pipe; 36, solenoid valve; 37, aeration pipe; 38, temperature sensor; 39, liquid level sensor; 310, dust-proof cover; 4, heat dissipation holes; 41, circulation hose; 42, circulation pump; 5, heat-conducting sheet; 51, radiator blade; 52, diversion groove; 53, fan. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0017] Please refer to Figures 1-3The utility model provides a technical solution: including a fixed mold 1, a movable mold 2 and a cooling box 3, the fixed mold 1 and the movable mold 2 are both provided with heat dissipation holes 4, and both ends of the heat dissipation holes 4 are open structures, the openings of the heat dissipation holes 4 are located at the lower ends of the fixed mold 1 and the movable mold 2, and are connected with a circulation hose 41, the other end of the circulation hose 41 is installed in the cooling box 3, the upper ends of the movable mold 2 and the fixed mold 1 are both fixed with radiator blades 51, the upper end of the fixed mold 1 is fixed with a fan 53 on the side away from the movable mold 2, the fixed mold 1 and the movable mold 2 are equidistantly fixed with heat conducting sheets 5, the upper ends of the heat conducting sheets 5 extend out and are fixed on the radiator blades 51, the heat conducting sheets 5 are made of copper-aluminum alloy, and the surfaces of the radiator blades 51 are evenly provided with guide grooves 52.
[0018] The cooling box 3 is divided into an entry chamber 32, a cooling chamber 33 and an insulation chamber 34 by a partition 31. The cooling chamber 33 is arranged between the entry chamber 32 and the insulation chamber 34. The end of the circulation hose 41 is inserted into the entry chamber 32 and the cooling chamber 33. A connecting pipe 35 is fixed on the partition 31. A solenoid valve 36 is installed on the connecting pipe 35. An aeration pipe 37 is fixed at the bottom of the cooling chamber 33, and the upper end is an open structure. A temperature sensor 38 is fixed in the cooling chamber 33. A liquid level sensor 39 is fixed above the inner wall of the cooling chamber 33. The liquid level sensor 39 and the temperature sensor 38 are both electrically connected to the solenoid valve 36. A circulation pump 42 is fixed on the circulation hose 41. A dust cover 310 is fixed in the insulation chamber 34 and on the periphery of the circulation hose 41.
[0019] Working principle: First, connect the entire device to an external power supply. After closing the mold, the temperature of the high-temperature liquid plastic will be absorbed by the moving mold 2 and the fixed mold 1. At this time, the heat conducting sheet 5 can quickly transfer the heat to the radiator fins 51, and by blowing with the fan 53, the gas flow velocity around the radiator fins 51 is increased, thereby improving the heat dissipation effect. At the same time, by pumping the liquid with the circulating pump 42, the liquid in the cooling tank 3 can be pumped out and enter the heat dissipation holes 4 to absorb heat, and finally return to the cooling tank 3, realizing the combined heat dissipation of liquid cooling and air cooling and achieving the effect of rapid cooling. During this process, the liquid flowing back into the cooling tank 3 will enter the inlet cavity 32, and the cooled liquid will be kept at a constant temperature in the heat preservation cavity 34. At the same time, it is pumped into the heat dissipation holes 4 through the circulating hose 41. After the liquid level sensor 39 in the cooling cavity 33 detects that the liquid level has dropped to a predetermined height, it will open the solenoid valve 36 of the front connecting pipe 35, so that the liquid in the inlet cavity 32 enters the cooling cavity 33, and after reaching the predetermined height, the solenoid valve 36 on the front connecting pipe 35 is closed. Then, cooling gas is introduced through the aeration pipe 37 to cool the liquid. At the same time, aeration can also increase the heat dissipation speed. After the temperature sensor 38 monitors that the liquid temperature reaches a predetermined value, the solenoid valve 36 on the rear connecting pipe 35 is opened to make the liquid enter the heat preservation cavity 34. At this time, the liquid level in the cooling tank 3 drops and the liquid level in the heat preservation cavity 34 rises. When pumping the liquid in the heat preservation cavity 34 into the heat dissipation holes 4, it is ensured that the temperature of the liquid entering the heat dissipation holes 4 is constant. The drop of the liquid level in the cooling cavity 33 can open the front solenoid valve 36 and close the rear solenoid valve 36 at the same time, so that the high-temperature coolant flowing back will not affect the temperature of the coolant entering the heat dissipation holes 4, and thus the mold can be cooled better.
[0020] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.
[0021] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An injection mold with a rapid cooling structure, comprising a fixed mold (1), a movable mold (2) and a cooling box (3), characterized in that: The fixed mold (1) and the movable mold (2) are both provided with heat dissipation holes (4), and both ends of the heat dissipation holes (4) are open structures. The openings of the heat dissipation holes (4) are located at the lower ends of the fixed mold (1) and the movable mold (2), and are connected to a circulation hose (41). The other end of the circulation hose (41) is installed in a cooling box (3). The upper ends of the movable mold (2) and the fixed mold (1) are both fixed with radiator blades (51). A fan (53) is fixed to the upper end of the fixed mold (1) away from the movable mold (2); The cooling box (3) is divided into an entry chamber (32), a cooling chamber (33) and a heat preservation chamber (34) by a partition (31); the cooling chamber (33) is arranged between the entry chamber (32) and the heat preservation chamber (34); the end of the circulation hose (41) is plugged into the entry chamber (32) and the cooling chamber (33); a connecting pipe (35) is fixed on the partition (31); a solenoid valve (36) is installed on the connecting pipe (35); an aeration pipe (37) is fixed at the bottom of the cooling chamber (33), and the upper end is an open structure.
2. The injection mold with a rapid cooling structure according to claim 1, wherein: A temperature sensor (38) is fixed in the cooling chamber (33), and a liquid level sensor (39) is fixed above the inner wall of the cooling chamber (33). Both the liquid level sensor (39) and the temperature sensor (38) are electrically connected to the solenoid valve (36).
3. The injection mold with a rapid cooling structure according to claim 1, characterized in that: A circulation pump (42) is fixed on each of the circulation hoses (41).
4. An injection mold with a rapid cooling structure according to claim 1, characterized in that: A dust cover (310) is fixed inside the heat preservation chamber (34) and outside the circulation hose (41).
5. The injection mold with a rapid cooling structure according to claim 1, wherein: Heat conducting plates (5) are fixed at equal distances in the fixed mold (1) and the movable mold (2); the upper ends of the heat conducting plates (5) extend out and are fixed on the radiator blades (51); and the heat conducting plates (5) are made of copper-aluminum alloy.
6. The injection mold with a rapid cooling structure according to claim 1, wherein: The surfaces of the radiator blades (51) are evenly provided with flow guide grooves (52).