Intelligent mold cooling circulation device based on temperature feedback

Abstract

This invention provides an intelligent mold cooling circulation device based on temperature feedback, comprising a circulation assembly including a chiller, an outlet pipe, a circulation pump, a heat exchange pipe, a heat exchanger, a return pipe, a connecting frame, a mounting plate, an air distribution plate, and a forced exhaust fan; one end of the outlet pipe is connected to the outlet of the chiller. This invention lowers the temperature of the high-temperature return water first through the heat exchanger, and then sends it to the chiller for deep cooling. This pre-cooling method can significantly reduce the cooling capacity requirement of the chiller and reduce its energy consumption. By combining the high-efficiency heat exchange characteristics of the heat exchanger with the precise temperature control capability of the chiller, it breaks through the performance bottleneck of a single cooling method and achieves multiple optimizations in energy saving, stability, and cost control. Furthermore, with the cooperation of the forced exhaust fan, connecting frame, and other structures, the heat exchange effect of the heat exchanger can be improved.

Description

Technical Field

[0001] This utility model relates to a cooling circulation device, specifically an intelligent mold cooling circulation device based on temperature feedback, belonging to the field of mold cooling technology. Background Technology

[0002] During injection molding, molds are cooled by cooling media (such as water or heat transfer oil). The core purpose is to control the mold temperature, ensuring the stability of the injection molding process and the quality of the finished product. Specifically, the cooling media can quickly remove the heat generated by the injection of molten plastic into the mold, allowing the melt to cool and solidify evenly within the cavity, shortening the product molding cycle and improving production efficiency. Simultaneously, precise temperature control can reduce defects such as shrinkage, deformation, and surface weld lines caused by uneven cooling, ensuring dimensional accuracy and surface finish of the product. Furthermore, a well-designed cooling system can reduce thermal fatigue damage to the mold, extend its service life, and balance production efficiency and energy consumption, making it a key element in achieving high-quality and efficient production in the injection molding process.

[0003] Currently, most mold cooling circulation devices use plate heat exchangers or chillers for heat exchange during operation, resulting in a relatively limited cooling method. Plate heat exchangers, with their compact structure and high heat transfer efficiency, perform well in the early cooling stages. However, as the coolant temperature rises during circulation, the internal temperature difference decreases, significantly reducing the heat exchange efficiency of plate heat exchangers and making it difficult to meet the continuous cooling requirements of the mold. While chillers can provide a stable low-temperature coolant, they require continuous operation of compressors and pumps, resulting in high power consumption. This significantly increases production costs and energy consumption. Therefore, this paper proposes an intelligent mold cooling circulation device based on temperature feedback. Utility Model Content

[0004] In view of this, the present invention provides an intelligent mold cooling circulation device based on temperature feedback to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial option.

[0005] The technical solution of this utility model embodiment is implemented as follows: an intelligent mold cooling circulation device based on temperature feedback, including a circulation component, wherein the circulation component includes a chiller, a water outlet pipe, a circulation pump, a heat exchange pipe, a heat exchanger, a return pipe, a connecting frame, a mounting plate, an air distribution plate, and a forced exhaust fan;

[0006] One end of the outlet pipe is connected to the outlet of the chiller, and the other end of the outlet pipe is connected to the inlet of the circulating pump. The outlet of the circulating pump is connected to one end of the heat exchange tube through a connecting pipe, and the other end of the heat exchange tube is connected to the inlet of the heat exchanger through a connecting pipe. One end of the return pipe is connected to the outlet of the heat exchanger, and the other end of the return pipe is connected to the inlet of the chiller. The air distribution plate is installed on the inner side wall of the connecting frame, the mounting plate is fixedly connected to the front surface of the connecting frame, and the forced exhaust fan is installed inside the mounting plate.

[0007] More preferably, the rear surface of the connecting frame is symmetrically provided with slots, and the fins of the heat exchanger are inserted into the inner sidewall of the slot.

[0008] More preferably, a protective net is fixedly connected to the front surface of the mounting plate, and the position of the protective net corresponds to the position of the forced exhaust fan.

[0009] More preferably, the air distribution plate has uniformly distributed air distribution holes inside, and the air distribution plate is located between the forced exhaust fan and the heat exchanger.

[0010] More preferably, the outside of the circulation component is provided with a mold body.

[0011] More preferably, the heat exchange tube is embedded inside the mold body.

[0012] More preferably, a thermocouple is installed inside the mold body.

[0013] More preferably, the heat exchange tube has a continuous S-shaped bend.

[0014] The present invention has the following advantages due to the adoption of the above technical solution:

[0015] This invention uses a heat exchanger to lower the temperature of the high-temperature return water before sending it to a chiller for deep cooling. This pre-cooling method can significantly reduce the cooling capacity requirement of the chiller and reduce its energy consumption. By combining the high-efficiency heat exchange characteristics of the heat exchanger with the precise temperature control capability of the chiller, it breaks through the performance bottleneck of a single cooling method and achieves multiple optimizations in energy saving, stability, and cost control. Moreover, with the cooperation of structures such as the forced exhaust fan and connecting frame, external air flows into the connecting frame from both sides and the rear of the heat exchanger, accelerating the airflow speed and thus improving the heat exchange effect of the heat exchanger.

[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0017] 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an overall structural diagram of the present invention;

[0019] Figure 2 This is a structural diagram of the circulation component of this utility model;

[0020] Figure 3 This is a schematic diagram showing the connection between the connecting frame and the heat exchanger of this utility model;

[0021] Figure 4 This is a structural diagram of the mounting plate of this utility model;

[0022] Figure 5 This is a structural diagram of the connecting frame of this utility model.

[0023] Reference numerals: 101, Circulation component; 11, Chiller; 12, Outlet pipe; 13, Circulation pump; 14, Heat exchanger tube; 15, Heat exchanger; 16, Return pipe; 17, Connecting frame; 18, Mounting plate; 19, Protective net; 20, Air distribution plate; 21, Forced exhaust fan; 22, Slot; 23, Mold body; 24, Thermocouple. Detailed Implementation

[0024] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0025] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] like Figures 1-5 As shown, this utility model embodiment provides an intelligent mold cooling circulation device based on temperature feedback, including a circulation component 101. The circulation component 101 includes a chiller 11, a water outlet pipe 12, a circulation pump 13, a heat exchange pipe 14, a heat exchanger 15, a return pipe 16, a connecting frame 17, a mounting plate 18, an air distribution plate 20, and a forced exhaust fan 21.

[0027] One end of the outlet pipe 12 is connected to the outlet of the chiller 11, and the other end of the outlet pipe 12 is connected to the inlet of the circulating pump 13. The outlet of the circulating pump 13 is connected to one end of the heat exchange tube 14 via a connecting pipe, and the other end of the heat exchange tube 14 is connected to the inlet of the heat exchanger 15 via a connecting pipe. One end of the return pipe 16 is connected to the outlet of the heat exchanger 15, and the other end of the return pipe 16 is connected to the inlet of the chiller 11. Thus, the chiller 11, the circulating pump 13, the heat exchange tube 14, and the heat exchanger 15 are connected in sequence. When the chiller 11 is working, cold water flows into the outlet pipe 12, and then the circulating pump 13 delivers the cold water to the heat exchange pipe 14. At this time, the cooling water in the heat exchange pipe 14 can quickly remove the heat generated by the injection of plastic melt into the mold, thereby cooling and solidifying the melt in the cavity. Then, the heated cooling water flows into the heat exchanger 15, which completes the heat exchange and lowers the temperature of the cooling water. Then, the pre-cooled cooling water flows into the chiller 11 through the return pipe 16, and the chiller 11 lowers the temperature of the cooling water again.

[0028] The temperature of the high-temperature return water is first reduced by heat exchanger 15, and then sent to chiller 11 for deep cooling. This pre-cooling method can significantly reduce the cooling capacity requirement of chiller 11, thereby reducing the energy consumption of chiller 11.

[0029] This utility model combines the high-efficiency heat exchange characteristics of heat exchanger 15 with the precise temperature control capability of chiller 11 by adding a pre-cooling method for return water, breaking through the performance bottleneck of a single cooling method, and achieving multiple optimizations in energy saving, stability and cost control.

[0030] The air distribution plate 20 is installed on the inner side wall of the connecting frame 17, the mounting plate 18 is fixedly connected to the front surface of the connecting frame 17, the forced exhaust fan 21 is installed inside the mounting plate 18, and the front surface of the mounting plate 18 is fixedly connected to the protective net 19. The position of the protective net 19 corresponds to the position of the forced exhaust fan 21. When the heat exchanger 15 pre-cools the high-temperature return water, the forced exhaust fan 21 works. Under the guidance of the forced exhaust fan 21, the external air flows into the connecting frame 17 from both sides and the rear of the heat exchanger 15, which accelerates the air flow speed and thus improves the heat exchange effect of the heat exchanger 15.

[0031] In one embodiment, the air distribution plate 20 has uniformly distributed air distribution holes inside. The air distribution plate 20 is located between the forced exhaust fan 21 and the heat exchanger 15. The air distribution plate 20 can make the air flow evenly within the connecting frame 17.

[0032] In one embodiment, slots 22 are symmetrically provided on the rear surface of the connecting frame 17, and the fins of the heat exchanger 15 are inserted into the inner sidewall of the slot 22. By providing the slots 22, it is convenient to connect the connecting frame 17 and the heat exchanger 15. In order to increase stability during use, the connecting frame 17 and the heat exchanger 15 can also be welded.

[0033] In one embodiment, a mold body 23 is provided on the outside of the circulation component 101, and a heat exchange tube 14 is embedded in the inside of the mold body 23. The heat exchange tube 14 is continuously S-shaped and can quickly remove the heat inside the mold body 23. Designing it as S-shaped can increase the heat exchange effect.

[0034] A thermocouple 24 is installed inside the mold body 23, and a controller (not shown in the figure) is installed outside the chiller 11. The signal terminals of the controller are connected to the signal terminals of the chiller 11 and the circulating pump 13, respectively. During operation, the thermocouple 24 collects the internal temperature data of the mold body 23 in real time and transmits it to the controller through analog or digital signals. The controller compares the received temperature value with the preset process temperature range and calculates the adjustment parameters based on the PID control algorithm. If the temperature is higher than the target value, the controller outputs a command to increase the speed of the circulating pump 13 to increase the circulating water delivery volume and controls the chiller 11 to lower the circulating water temperature. If the temperature is lower than the target value, the controller reduces the speed of the circulating pump 13 and increases the set temperature of the chiller 11, thereby achieving closed-loop precise control of the mold temperature and ensuring the stability of the injection molding process.

[0035] In this utility model, the thermocouple 24, the chiller 11, the circulating pump 13, and the forced exhaust fan 21 are all existing technologies, so their internal structure, working principle, and control method will not be described in detail.

[0036] When this utility model is in operation: the chiller 11 is working, and cold water flows into the outlet pipe 12. Then the circulation pump 13 delivers the cold water to the heat exchange pipe 14. At this time, the cooling water in the heat exchange pipe 14 can quickly remove the heat generated by the injection of plastic melt into the mold. Then the heated cooling water flows into the heat exchanger 15. The heat exchanger 15 completes the heat exchange and lowers the temperature of the cooling water. Then the cooling water flows into the chiller 11 through the return pipe 16. The chiller 11 lowers the temperature of the cooling water again.

[0037] When the heat exchanger 15 pre-cools the high-temperature return water, the forced exhaust fan 21 operates. Under the guidance of the forced exhaust fan 21, external air flows into the connecting frame 17 from both sides and the rear of the heat exchanger 15, accelerating the airflow speed and thus improving the heat exchange effect of the heat exchanger 15.

[0038] During operation, thermocouple 24 collects the internal temperature data of mold body 23 in real time. If the temperature is higher than the target value, the controller outputs a command to increase the speed of circulating pump 13 to increase the circulating water delivery volume and controls chiller 11 to lower the circulating water temperature. If the temperature is lower than the target value, the speed of circulating pump 13 is reduced and the set temperature of chiller 11 is increased, thereby achieving closed-loop precise control of mold temperature and ensuring the stability of the injection molding process.

[0039] Compared to existing technologies, this invention uses a heat exchanger 15 to lower the temperature of the high-temperature return water before sending it to the chiller 11 for deep cooling. This pre-cooling method can significantly reduce the cooling capacity requirement of the chiller 11, thereby reducing its energy consumption. By combining the high-efficiency heat exchange characteristics of the heat exchanger 15 with the precise temperature control capability of the chiller 11, the performance bottleneck of a single cooling method is broken through. Multiple optimizations are achieved in terms of energy saving, stability, and cost control. Moreover, with the cooperation of the forced exhaust fan 21, connecting frame 17, and other structures, the heat exchange effect of the heat exchanger 15 can be improved.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A smart mold cooling circulation device based on temperature feedback, comprising a circulation component (101), characterized in that: The circulation assembly (101) includes a chiller (11), an outlet pipe (12), a circulation pump (13), a heat exchange pipe (14), a heat exchanger (15), a return pipe (16), a connecting frame (17), a mounting plate (18), an air distribution plate (20), and a forced exhaust fan (21). One end of the outlet pipe (12) is connected to the outlet of the chiller (11), and the other end of the outlet pipe (12) is connected to the inlet of the circulating pump (13). The outlet of the circulating pump (13) is connected to one end of the heat exchange pipe (14) through a connecting pipe. The other end of the heat exchange pipe (14) is connected to the inlet of the heat exchanger (15) through a connecting pipe. One end of the return pipe (16) is connected to the outlet of the heat exchanger (15), and the other end of the return pipe (16) is connected to the inlet of the chiller (11). The air distribution plate (20) is installed on the inner side wall of the connecting frame (17). The mounting plate (18) is fixedly connected to the front surface of the connecting frame (17). The forced exhaust fan (21) is installed inside the mounting plate (18).

2. The intelligent mold cooling circulation device based on temperature feedback according to claim 1, characterized in that: The rear surface of the connecting frame (17) is symmetrically provided with slots (22), and the fins of the heat exchanger (15) are inserted into the inner sidewall of the slot (22).

3. The intelligent mold cooling circulation device based on temperature feedback according to claim 2, characterized in that: A protective net (19) is fixedly connected to the front surface of the mounting plate (18), and the position of the protective net (19) corresponds to the position of the forced exhaust fan (21).

4. The intelligent mold cooling circulation device based on temperature feedback according to claim 3, characterized in that: The air distribution plate (20) has uniformly distributed air distribution holes inside, and the air distribution plate (20) is located between the forced exhaust fan (21) and the heat exchanger (15).

5. The intelligent mold cooling circulation device based on temperature feedback according to claim 1, characterized in that: The outside of the circulation component (101) is provided with a mold body (23).

6. The intelligent mold cooling circulation device based on temperature feedback according to claim 5, characterized in that: The heat exchange tube (14) is embedded inside the mold body (23).

7. The intelligent mold cooling circulation device based on temperature feedback according to claim 6, characterized in that: Thermocouples (24) are installed inside the mold body (23).

8. The intelligent mold cooling circulation device based on temperature feedback according to claim 7, characterized in that: The heat exchange tube (14) is continuously S-shaped.

Images