Injection molding process of air purifier plastic part

Abstract

The invention discloses an injection molding process for a plastic part of an air purifier, and relates to the technical field of injection molding processes. Multi-area dynamic mold temperature adjustment is performed, a plurality of temperature control areas are divided according to the thin wall and curved surface structure characteristics of the plastic part, the temperature is adjusted in real time, stress concentration and deformation are remarkably reduced, and the service life of the plastic part is prolonged. The problem of shrinkage stress of a thin-wall area is solved in a targeted mode, cooling of a thick area is accelerated, meanwhile, real-time temperature control and deformation compensation are controlled in a linkage mode, the temperature and the cooling rate are dynamically adjusted according to deformation data monitored in real time, and the deformation trend is predicted, so that pre-deformation compensation is provided, warping of the thin-wall area and the curved surface area is controlled, and deformation of the thin-wall area and the curved surface area is controlled. The stability of the plastic part in the forming process is kept, and the product precision is improved; in addition, simulation prediction and mold parameter adjustment are carried out, cooling requirements of different areas are adjusted, the temperature difference between the thin wall and the curved surface area is reduced, and the whole cooling process is more efficient.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding technology, in particular to an injection molding process for a plastic part of an air purifier. Background Art

[0002] The plastic parts of air purifiers have thin-walled and curved structural features, and the temperature control requirements during the injection molding process are very strict. Due to the temperature difference during mold cooling, the uneven material shrinkage rate and the difference in cooling speed in different areas, plastic parts are prone to local deformation during the cooling process, leading to warping, dimensional errors and other problems, affecting the overall performance of the air purifier.

[0003] Traditional injection molding methods usually rely on the mold temperature control system to solve the warping problem. Most common mold temperature control methods are unified temperature management. The entire mold cooling process is relatively uniform, simple and low-cost. However, such methods cannot be adjusted according to the cooling needs of different areas, which can easily lead to uneven cooling. In the molding process of complex structures or thin-walled plastic parts, it is difficult to effectively achieve precise control. In addition, uneven mold temperature will directly affect the crystallization process of plastic parts, causing local shrinkage unevenness, thereby causing warping deformation.

[0004] Some traditional methods adjust injection molding process parameters, such as holding pressure and filling time, to reduce warping deformation, but these measures still cannot fundamentally solve the problems of uneven cooling and residual stress. With the wear of the mold and the extension of the production cycle, these problems gradually increase in mass production, resulting in unstable product quality. In addition, traditional methods mainly rely on experience and repeated debugging to compensate for deformation, which makes it difficult to achieve real-time optimization. When processing highly complex air purifier plastic parts, a lot of manual intervention is required, and the efficiency is low. Therefore, an injection molding process for air purifier plastic parts is urgently needed to solve such problems. Summary of the invention

[0005] In view of the above existing problems, the present invention is proposed.

[0006] The present invention provides an injection molding process for plastic parts of an air purifier to solve the problem that the process cannot be adjusted according to the cooling requirements of different areas, which easily leads to uneven cooling. In the molding process of complex structures or thin-walled plastic parts, it is difficult to effectively achieve precise control, and uneven mold temperature will directly affect the crystallization process of the plastic parts, causing local uneven shrinkage, thereby causing warping and deformation.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] The present invention provides an injection molding process for a plastic part of an air purifier, which comprises:

[0009] Step S1, multi-zone dynamic mold temperature adjustment, according to the thin wall and curved surface structure characteristics of the plastic part, the mold is divided into multiple temperature control zones to form a multi-zone independent temperature control system;

[0010] Heating elements and cooling channels are embedded in the temperature control areas of thin walls and curved surfaces that are prone to deformation. During the filling and holding stages, the temperature control system increases the temperature of the thin-walled area to reduce shrinkage stress, and quickly cools the thicker area to balance the overall molding speed.

[0011] Step S2, simulation prediction and mold parameter adjustment: before the injection molding begins, Moldflow and ANSYSCAE simulation tools are used to predict the deformation trend of the plastic parts during cooling and shrinkage, and the mold parameters are adjusted according to the simulation results;

[0012] Step S3, temperature control and deformation compensation are linked to monitor the deformation trend of the plastic part in real time during the injection molding process, and dynamically adjust the cooling rate of each temperature control zone according to the feedback deformation trend signal;

[0013] Step S4, real-time online detection, during the injection molding process, based on the deformation parameters of the plastic parts monitored by the deformation sensor, the deformation parameter data is fed back to the temperature control system. Once abnormal deformation is detected, the temperature, holding time and cooling rate are automatically adjusted.

[0014] Furthermore, in step S1, each temperature control zone is deployed with an independent temperature control unit to monitor and manage the temperature in real time; the independent temperature control unit has a built-in deformation sensor to monitor the deformation parameters of the plastic part.

[0015] Furthermore, in step S1, the multi-zone dynamic mold temperature adjustment method is:

[0016] For each temperature control zone, cooling channel design and temperature control zone division are carried out based on heat conduction and heat diffusion requirements. The divided area of ​​the temperature control zone is A i The layout relationship with the cooling channel is defined as: A i Represents the cooling area of ​​the temperature control zone, V i Indicates the volume of the plastic part in the temperature control zone, k i Represents the thermal conductivity of the material in this area, ΔT i Indicates the temperature difference in the temperature control zone, that is, the difference between the mold set temperature and the actual temperature of the plastic part;

[0017] In different stages of injection molding (such as filling, holding pressure and cooling), the temperature control system adjusts the temperature of the temperature control zone in real time according to the cooling requirements of different areas. The heating element increases the temperature in the thin-walled area to reduce the stress caused by the temperature difference; accelerates cooling in the thicker area to ensure the balance of the overall molding speed. The temperature adjustment method is: Among them, T i(t) represents the temperature of temperature control zone i at time t, T i0 represents the initial temperature of temperature control zone i, Q i represents the heat supplied by temperature control zone i, m i represents the mass of the plastic part in the temperature control zone i, c i represents the specific heat capacity of the plastic part in the temperature control zone i, τ i Represents the thermal response time constant of temperature control zone i.

[0018] Furthermore, in step S1, the multi-zone dynamic mold temperature adjustment method further includes:

[0019] During the filling and holding stages, the temperature control system increases the temperature of the thin-walled area to reduce the shrinkage stress of the thin-walled plastic parts. For the thicker areas, the cooling is accelerated to balance the molding speed and quality of the entire plastic part.

[0020] In thin-walled areas, the temperature control system raises the area temperature to a preset value:

[0021] Among them, T target represents the target temperature of the thin-walled area, T initial represents the initial temperature of the thin-walled region, T max represents the maximum temperature of the thin-walled area, t 0 represents the time constant, indicating the time when the temperature reaches the target value, and τ represents the thermal response time, which controls the rate of temperature change;

[0022] For thicker areas, make sure the cooling process is as uniform as possible to prevent stress and warping:

[0023] in, represents the cooling rate, T initial represents the initial temperature, T min Indicates the set cooling end temperature, Δt indicates the time period of the cooling process;

[0024] Each temperature control zone is equipped with an independent temperature control unit and deformation sensor for real-time monitoring and dynamic adjustment. In actual production, the temperature is adjusted instantly through feedback signals to avoid deformation caused by possible temperature differences during the molding process. The real-time feedback mechanism of temperature control is as follows:

[0025] ΔT adjust =α·(T current -T target )+β·(F strain -F target ), where ΔT adjust Indicates the adjusted temperature change, T current Indicates the current temperature, T target Indicates the target temperature, F strainIndicates the current deformation detected by the deformation sensor, F target represents the target deformation, α and β represent adjustment coefficients, which are used to balance the control of temperature and deformation;

[0026] Specifically, through the above steps, a multi-zone dynamic mold temperature adjustment system is used to significantly improve the temperature management and cooling rate control during the injection molding process based on the structural characteristics of thin-walled and curved plastic parts. The temperature of the temperature control zone is adjusted through a real-time feedback mechanism to provide effective control over the stress and deformation of plastic parts during filling, holding pressure and cooling, thereby ensuring product quality and stability.

[0027] Furthermore, in step S2, the method of adjusting the mold parameters according to the simulation results includes:

[0028] During the simulation phase, potential deformation risks in thin-walled and curved areas are identified, and mold geometry and cooling channel layout are adjusted based on the deformation risks.

[0029] At the same time, the simulation data is used to guide the temperature control system in step S1 to adjust the cooling rate and temperature of each temperature control zone.

[0030] Furthermore, in step S2, the simulation prediction and mold parameter adjustment method is:

[0031] Identify the potential deformation risk of thin-walled and curved areas. The deformation risk mainly comes from the stress change caused by temperature difference during the cooling process of the material. Thin-walled and curved areas have large deformation due to large differences in cooling speed. This step uses stress field analysis and shrinkage stress model to predict the deformation trend of such areas and perform thermal stress field analysis. The calculation formula of thermal stress field is: σ thermal =E·ΔT·α, where σ thermal It represents thermal stress, which refers to the stress caused by temperature changes in plastic parts during cooling. E represents the Young's modulus of the material, which refers to the elastic modulus of the material and is used to measure the rigidity of the material. ΔT represents the temperature difference, which is the difference between the mold surface temperature and the melt temperature of the plastic part. α represents the thermal expansion coefficient, which describes the degree of change in volume or length of the material when the temperature changes. Calculate the thermal stress to determine the location where thin-walled and curved areas are prone to deformation. For areas prone to deformation, cooling should be strengthened or heating should be performed for compensation when the thermal stress is too large.

[0032] The cooling process of plastic parts is accompanied by shrinkage. Uneven shrinkage will cause deformation. Here, the shrinkage stress model of plastic parts is modeled: Among them, σ shrinkrepresents shrinkage stress, which represents the stress caused by the volume shrinkage of the plastic during the cooling process. E represents Young's modulus. Δε represents strain, which represents the relative deformation caused by the volume shrinkage of the plastic part during the cooling process. v represents the Poisson's ratio of the material, which is dimensionless and represents the ratio of the strain of the material in one direction to the strain in the perpendicular direction. It can predict the stress concentration in the thin-walled area due to shrinkage stress and determine the potential deformation risk of this area.

[0033] Furthermore, in step S2, the geometric shape and cooling channel layout of the mold are adjusted according to the thermal stress and shrinkage stress data obtained by simulation:

[0034] The mold design process performs reverse compensation based on the possible deformation of the plastic parts during the cooling process, and uses finite element analysis (FEA) to optimize the mold shape. The geometric adjustment formula for reverse compensation is: Among them, Δx represents the mold shape fine-tuning amount, that is, the compensated deformation, σ thermal It represents thermal stress, which is obtained by analyzing the thermal stress field. L represents the length of a specific area of ​​the plastic part, that is, the length of the area that needs to be compensated. E represents Young's modulus.

[0035] After determining the thermal stress distribution in different areas based on simulation data, adjust the layout of the cooling channels inside the mold to optimize the cooling efficiency. For thin-walled areas and curved areas, the cooling channels are specially designed to achieve a more uniform cooling effect.

[0036] The goal of cooling channel design optimization is to keep the heat flow balanced: Among them, Q represents heat flow, that is, the amount of heat conducted during the cooling process, k represents the thermal conductivity of the material, A represents the cross-sectional area of ​​the cooling channel, ΔT represents the temperature difference, which refers to the temperature difference between the inside and outside of the cooling channel, and d represents the length of the cooling channel. The length of the cooling channel affects the conduction efficiency of the heat flow. By optimizing the layout of the cooling channel, the temperature difference in thin-walled and curved areas can be significantly reduced to avoid deformation caused by uneven cooling.

[0037] The cooling data and stress data obtained in the simulation are fed back to the temperature control system in step S1. Based on the above data, the temperature control system adjusts the cooling rates of different temperature control zones to optimize the cooling process.

[0038] For thin-walled areas that are prone to deformation, the temperature control system increases the local temperature according to the simulation data (reducing the cooling rate), while accelerating the cooling in thicker areas (increasing the cooling rate). The temperature control adjustment formula is:

[0039] Where T(t) represents the temperature of the temperature control zone at time t, T initial Indicates the initial temperature of the temperature control zone, that is, the starting temperature of the mold, T finalIt represents the final target temperature of the temperature control zone, the target temperature after adjustment, τ represents the time constant, and t represents the time;

[0040] Specifically, through the above steps, the potential deformation risks of thin-walled and curved areas can be effectively identified, and the risks can be reduced through mold geometry compensation and cooling channel optimization. In addition, by feeding back the simulation data to the temperature control system of step S1, a closed-loop control system with real-time adjustment and optimization is formed, which further improves the molding accuracy and quality of plastic parts, which not only enhances the intelligence of mold design, but also improves the real-time response capability to temperature control and deformation during the injection molding process.

[0041] Furthermore, in step S3, based on the real-time data of the multi-zone temperature control system, the temperature of the easily deformed area is adjusted to perform pre-deformation compensation to avoid warping and dimensional deviation during the cooling process. The temperature control and deformation compensation are linked to each other to correct the deformation in real time during the forming process.

[0042] Furthermore, in step S3, the linkage between temperature control and deformation compensation is performed as follows:

[0043] During the injection molding process, deformation sensors are first used to obtain the deformation data of plastic parts in real time. Based on the deformation trend signal of the monitored deformation data, quantitative analysis of the deformation trend is performed:

[0044] ΔL i =f(T i ,P i ,t), where ΔL i is the deformation of the plastic part in the ith region, T i is the temperature of the ith region, P i is the pressure of the ith region, t is the time; real-time feedback of deformation trend;

[0045] Based on the deformation trend signal monitored in real time, the cooling rate of each temperature control zone is adjusted:

[0046] R c,i =α·(ΔL i -L 0i ), where R c,i is the cooling rate of the ith region, α is the adjustment factor of the cooling rate, L 0i is the initial size of the i-th region; thereby the dynamic adjustment of the cooling rate is matched with the actual deformation trend, the cooling rate is flexibly accelerated or slowed down according to the deformation of each region, and warping caused by overcooling is avoided;

[0047] During the cooling process of plastic parts, thin-walled and curved areas will produce large deformations. Therefore, the feedback signal of the temperature control system is used to pre-compensate the deformation-prone areas, that is, to offset or reduce the warping caused by stress concentration during the cooling process by adjusting the temperature.

[0048] Pre-deformation compensation formula: ΔT i =β·(ΔL i -L 0i ), where ΔT i is the temperature change of the i-th region, β is the temperature compensation factor, ΔL i is the deformation of the ith region;

[0049] By adjusting the temperature, the temperature control system can compensate for the temperature in advance during the cooling stage of the plastic parts based on the deformation trend prediction. For example, it can moderately heat the warped area to suppress deformation during the cooling process.

[0050] The temperature control unit of each temperature control zone adjusts the temperature of the corresponding area according to the above deformation trend signal. The temperature control system executes the linkage adjustment strategy according to the feedback signal of each temperature control zone:

[0051] T i =T set,i +ΔT i , where T i is the adjusted temperature of the ith region, T set,i is the preset target temperature, ΔT i is the temperature adjustment amount; the temperature control system adjusts the temperature of each area according to the real-time feedback deformation signal, thereby achieving pre-deformation compensation;

[0052] The entire temperature control system dynamically adjusts the cooling rate and temperature of each temperature control zone based on real-time data and deformation prediction. in, is the rate of change of the temperature in the i-th region, ΔL i is the deformation of the ith region, R c,i is the cooling rate of the i-th region, ΔT i It is the temperature compensation amount; through linkage control, it can be adjusted in real time during the forming process to avoid deformation problems caused by local uneven cooling;

[0053] Specifically, through dynamic temperature control and deformation compensation methods, the deformation problem of air purifier plastic parts during the cooling process can be effectively solved, and precise adjustment of cooling rate and temperature compensation can be ensured, thereby optimizing deformation control during the injection molding process and improving product precision and quality.

[0054] Furthermore, in step S4, the real-time online detection method is:

[0055] During the injection molding process, the deformation parameters of the plastic parts are monitored in real time based on the deformation sensor. Through the feedback mechanism, when abnormal deformation or dimensional deviation is detected, the temperature, holding time and cooling rate are automatically adjusted to correct the potential deformation problem.

[0056] During the molding process, deformation sensors (such as strain gauges or laser measurement systems) are used to monitor the deformation trends of key areas of plastic parts in real time, namely thin-walled and curved areas;

[0057] Deformation monitoring formula: ΔL(t) = f(T(t), σ(t), P(t), t), where ΔL(t) represents the deformation of the plastic part at time t, T(t) represents the surface temperature of the plastic part at time t, σ(t) represents the surface stress of the plastic part at time t, P(t) represents the pressure during the injection molding process, t represents the time variable, i.e., different time nodes during the molding process, and f represents the relationship between the length change ΔL(t) of the plastic part and multiple factors;

[0058] Based on the deformation data monitored in real time, combined with the design requirements and process standards of the injection molded parts, the deformation anomaly that exceeds the allowable range is identified. At this time, the feedback mechanism is activated to transmit the abnormal information to the temperature control system and the injection control system. The abnormal deformation identification formula is:

[0059] ΔL threshold (t) = α·L max ·(1+β·(T(t)-T 0 )), where ΔL threshold (t) represents the maximum acceptable deformation threshold of the plastic part at time t, L max It represents the maximum design length or size of the plastic part, α represents the coefficient related to the material properties, represents the deformation tolerance, β represents the influence coefficient of temperature on deformation, T 0 Indicates the reference temperature of the plastic part before injection molding. If ΔL(t) exceeds ΔL threshold (t), it is considered as abnormal deformation and the adjustment procedure is initiated;

[0060] According to the real-time monitored deformation data and the preset deformation threshold, the temperature control system adjusts the mold temperature, holding time and cooling rate to compensate and correct the deformation trend of the plastic part. The temperature control adjustment formula is:

[0061] ΔT(t)=γ·(ΔL threshold (t)-ΔL(t)), where ΔT(t) represents the temperature change that needs to be adjusted, γ represents the temperature adjustment response coefficient, which depends on the sensitivity of the material to temperature changes, and ΔL threshold (t) represents the preset maximum acceptable deformation threshold, and ΔL(t) represents the actual deformation at the current moment;

[0062] The rate adjustment formula is: in, Indicates the cooling rate that needs to be adjusted, δ indicates the cooling response coefficient, which affects the relationship between cooling rate and deformation, ΔL threshold (t) represents the maximum acceptable deformation threshold, ΔL(t) represents the deformation at the current moment;

[0063] When necessary, adjust the holding time according to the deformation feedback to control the deformation of the plastic parts during the cooling process.

[0064] Δt press (t) = η·(ΔL threshold (t)-ΔL(t)), where Δt press (t) represents the holding time that needs to be adjusted, η represents the holding adjustment coefficient, which is determined according to the design complexity and material properties of the plastic part, ΔL threshold (t) represents the maximum acceptable deformation threshold, ΔL(t) represents the deformation at the current moment;

[0065] Based on the calculated adjustment parameters, the temperature control system makes corresponding adjustments under the real-time feedback mechanism. The adjustment parameters are transmitted back to the temperature control unit to fine-tune the temperature, cooling rate and holding time during the injection molding process in real time.

[0066] T new (t) = T(t) + ΔT(t),

[0067]

[0068] t press,new (t) = t press (t)+Δt press (t), where T new (t) represents the new injection mold temperature, represents the new cooling rate, t press,new (t) indicates the new holding time.

[0069] The beneficial effects of the present invention are:

[0070] The present invention performs multi-zone dynamic mold temperature regulation. According to the thin-wall and curved surface structural characteristics of the plastic part, multiple temperature control zones are divided and the temperature is adjusted in real time, which significantly reduces stress concentration and deformation, specifically solves the shrinkage stress problem in the thin-wall area, and accelerates the cooling of the thicker area, avoiding excessive temperature gradients during the cooling process, thereby reducing the risk of deformation.

[0071] The present invention realizes real-time temperature control and deformation compensation linkage control, dynamically adjusts the temperature and cooling rate according to the deformation data monitored in real time, predicts the deformation trend, thereby providing pre-deformation compensation, controlling the warping of thin-walled and curved areas, maintaining the stability of plastic parts during the molding process, and improving the precision of the product.

[0072] The present invention performs simulation prediction and mold parameter adjustment to accurately adjust the cooling requirements of different areas; for thin-walled areas, the temperature control system reduces the cooling rate to prevent stress caused by excessive cooling; and accelerates cooling in thicker areas to ensure the consistency of the overall forming speed; the temperature difference between thin-walled and curved areas is reduced, making the overall cooling process more efficient.

[0073] The present invention uses simulation tools to predict the cooling and shrinkage process of plastic parts before injection molding, identifies potential deformation risks in advance, performs reverse compensation based on simulation results, and optimizes the layout of cooling channels. In addition, thermal stress field analysis and shrinkage stress analysis are performed to respond in real time at different injection molding stages and automatically adjust according to actual production conditions. At the same time, real-time online detection is performed, and deformation sensors are used to monitor plastic parts in real time. Once abnormal deformation or dimensional deviation is found, the temperature, holding time and cooling rate are automatically adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0075] Figure 1 The figure is a schematic diagram of the injection molding process flow of the air purifier plastic part of the present invention. DETAILED DESCRIPTION

[0076] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0077] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0078] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0079] Example 1, reference Figure 1 This embodiment provides an injection molding process for an air purifier plastic part, comprising the following steps:

[0080] Step S1, multi-zone dynamic mold temperature adjustment,

[0081] According to the thin-wall and curved surface structure characteristics of plastic parts, the mold is divided into multiple temperature control zones to form a multi-zone independent temperature control system;

[0082] Heating elements and cooling channels are embedded in the temperature control areas of thin walls and curved surfaces that are prone to deformation. During the filling and holding stages, the temperature control system increases the temperature of the thin-walled area to reduce shrinkage stress, and quickly cools the thicker area to balance the overall molding speed.

[0083] In step S1, each temperature control zone is deployed with an independent temperature control unit to monitor and manage the temperature in real time; the independent temperature control unit has a built-in deformation sensor to monitor the deformation parameters of the plastic part;

[0084] In step S1, the multi-zone dynamic mold temperature adjustment method is:

[0085] For each temperature control zone, cooling channel design and temperature control zone division are carried out based on heat conduction and heat diffusion requirements. The divided area of ​​the temperature control zone is A i The layout relationship with the cooling channel is defined as: A i Represents the cooling area of ​​the temperature control zone, V i Indicates the volume of the plastic part in the temperature control zone, k i Represents the thermal conductivity of the material in this area, ΔT i Indicates the temperature difference in the temperature control zone, that is, the difference between the mold set temperature and the actual temperature of the plastic part;

[0086] In different stages of injection molding (such as filling, holding pressure and cooling), the temperature control system adjusts the temperature of the temperature control zone in real time according to the cooling requirements of different areas. The heating element increases the temperature in the thin-walled area to reduce the stress caused by the temperature difference; accelerates cooling in the thicker area to ensure the balance of the overall molding speed. The temperature adjustment method is: Among them, T i (t) represents the temperature of temperature control zone i at time t, T i0 represents the initial temperature of temperature control zone i, Q i represents the heat supplied by temperature control zone i, m irepresents the mass of the plastic part in the temperature control zone i, c i represents the specific heat capacity of the plastic part in the temperature control zone i, τ i It represents the thermal response time constant of temperature control zone i, reflecting the speed of heat transfer;

[0087] In step S1, the multi-zone dynamic mold temperature adjustment method further includes:

[0088] During the filling and holding stages, the temperature control system increases the temperature of the thin-walled area to reduce the shrinkage stress of the thin-walled plastic parts. For the thicker areas, the cooling is accelerated to balance the molding speed and quality of the entire plastic part.

[0089] In thin-walled areas, the temperature control system raises the area temperature to a preset value:

[0090] Among them, T target represents the target temperature of the thin-walled area, T initial represents the initial temperature of the thin-walled region, T max Indicates the maximum temperature of the thin-walled area, t 0 represents the time constant, indicating the time when the temperature reaches the target value, and τ represents the thermal response time, which controls the rate of temperature change;

[0091] For thicker areas, make sure the cooling process is as uniform as possible to prevent stress and warping:

[0092] in, represents the cooling rate, T initial represents the initial temperature, T min Indicates the set cooling end temperature, Δt indicates the time period of the cooling process;

[0093] Each temperature control zone is equipped with an independent temperature control unit and deformation sensor for real-time monitoring and dynamic adjustment. In actual production, the temperature is adjusted instantly through feedback signals to avoid deformation caused by possible temperature differences during the molding process. The real-time feedback mechanism of temperature control is as follows:

[0094] ΔT adjust =α·(T current -T target )+β·(F strain -F target ), where ΔT adjust Indicates the adjusted temperature change, T current Indicates the current temperature, T target Indicates the target temperature, F strain Indicates the current deformation detected by the deformation sensor, F target represents the target deformation, α and β represent adjustment coefficients, which are used to balance the control of temperature and deformation;

[0095] Specifically, through the above steps, a multi-zone dynamic mold temperature adjustment system is used to significantly improve the temperature management and cooling rate control during the injection molding process based on the structural characteristics of thin-walled and curved plastic parts. The temperature of the temperature control zone is adjusted through a real-time feedback mechanism to provide effective control over the stress and deformation of plastic parts during filling, holding pressure and cooling, thereby ensuring product quality and stability.

[0096] Step S2: simulation prediction and mold parameter adjustment.

[0097] Before the injection molding process begins, Moldflow and ANSYSCAE simulation tools are used to predict the deformation trend of plastic parts during cooling and shrinkage, and mold parameters are adjusted based on the simulation results.

[0098] In step S2, the method of adjusting the mold parameters according to the simulation results includes:

[0099] During the simulation phase, potential deformation risks in thin-walled and curved areas are identified, and mold geometry and cooling channel layout are adjusted based on the deformation risks.

[0100] Simultaneously, the simulation data is used to guide the temperature control system in step S1 to adjust the cooling rate and temperature of each temperature control zone;

[0101] In step S2, the simulation prediction and mold parameter adjustment method is:

[0102] Identify the potential deformation risk of thin-walled and curved areas. The deformation risk mainly comes from the stress change caused by temperature difference during the cooling process of the material. Thin-walled and curved areas have large deformation due to large differences in cooling speed. This step uses stress field analysis and shrinkage stress model to predict the deformation trend of such areas and perform thermal stress field analysis. The calculation formula of thermal stress field is: σ thermal =E·ΔT·α, where σ thermal It represents thermal stress, which refers to the stress caused by temperature changes in plastic parts during cooling. E represents the Young's modulus of the material, which refers to the elastic modulus of the material and is used to measure the rigidity of the material. ΔT represents the temperature difference, which is the difference between the mold surface temperature and the melt temperature of the plastic part. α represents the thermal expansion coefficient, which describes the degree of change in volume or length of the material when the temperature changes. Calculate the thermal stress to determine the location where thin-walled and curved areas are prone to deformation. For areas prone to deformation, cooling should be strengthened or heating should be performed for compensation when the thermal stress is too large.

[0103] The cooling process of plastic parts is accompanied by shrinkage. Uneven shrinkage will cause deformation. Here, the shrinkage stress model of plastic parts is modeled: Among them, σ shrinkrepresents shrinkage stress, which represents the stress caused by the volume shrinkage of plastic during cooling. E represents Young's modulus. Δε represents strain, which represents the relative deformation caused by the volume shrinkage of plastic parts during cooling. v represents the Poisson's ratio of the material, which is dimensionless and represents the ratio of the strain of the material in one direction to the strain in the perpendicular direction. This can predict the stress concentration in the thin-walled area due to shrinkage stress and determine the potential deformation risk of this area.

[0104] In step S2, the geometric shape and cooling channel layout of the mold are adjusted according to the thermal stress and shrinkage stress data obtained by simulation:

[0105] The mold design process performs reverse compensation based on the possible deformation of the plastic parts during the cooling process, and uses finite element analysis (FEA) to optimize the mold shape. The geometric adjustment formula for reverse compensation is: Among them, Δx represents the mold shape fine-tuning amount, that is, the compensated deformation, σ thermal It represents thermal stress, which is obtained by analyzing the thermal stress field. L represents the length of a specific area of ​​the plastic part, that is, the length of the area that needs to be compensated. E represents Young's modulus.

[0106] After determining the thermal stress distribution in different areas based on simulation data, adjust the layout of the cooling channels inside the mold to optimize the cooling efficiency. For thin-walled areas and curved areas, the cooling channels are specially designed to achieve a more uniform cooling effect.

[0107] The goal of cooling channel design optimization is to keep the heat flow balanced: Among them, Q represents heat flow, that is, the amount of heat conducted during the cooling process, k represents the thermal conductivity of the material, A represents the cross-sectional area of ​​the cooling channel, ΔT represents the temperature difference, which refers to the temperature difference between the inside and outside of the cooling channel, and d represents the length of the cooling channel. The length of the cooling channel affects the conduction efficiency of the heat flow. By optimizing the layout of the cooling channel, the temperature difference in thin-walled and curved areas can be significantly reduced to avoid deformation caused by uneven cooling.

[0108] The cooling data and stress data obtained in the simulation are fed back to the temperature control system in step S1. Based on the above data, the temperature control system adjusts the cooling rates of different temperature control zones to optimize the cooling process.

[0109] For thin-walled areas that are prone to deformation, the temperature control system increases the local temperature according to the simulation data (reducing the cooling rate), while accelerating the cooling in thicker areas (increasing the cooling rate). The temperature control adjustment formula is:

[0110] Where T(t) represents the temperature of the temperature control zone at time t, T initial Indicates the initial temperature of the temperature control zone, that is, the starting temperature of the mold, T finalIt represents the final target temperature of the temperature control zone, the target temperature after adjustment, τ represents the time constant, and t represents the time;

[0111] Specifically, through the above steps, the potential deformation risks of thin-walled and curved surface areas can be effectively identified, and the risks can be reduced through mold geometry compensation and cooling channel optimization. In addition, by feeding back the simulation data to the temperature control system of step S1, a closed-loop control system with real-time adjustment and optimization is formed, which further improves the molding accuracy and quality of plastic parts, not only enhancing the intelligence of mold design, but also improving the real-time response capability to temperature control and deformation during the injection molding process;

[0112] Step S3: temperature control and deformation compensation are linked.

[0113] During the injection molding process, the deformation trend of the plastic parts is monitored in real time, and the cooling rate of each temperature control zone is dynamically adjusted according to the feedback deformation trend signal;

[0114] In step S3, based on the real-time data of the multi-zone temperature control system, the temperature of the easily deformed area is adjusted to perform pre-deformation compensation to avoid warping and dimensional deviation during the cooling process. The temperature control and deformation compensation are linked to each other to correct the deformation in real time during the forming process.

[0115] In step S3, the linkage between temperature control and deformation compensation is performed as follows:

[0116] During the injection molding process, deformation sensors are first used to obtain the deformation data of plastic parts in real time. Based on the deformation trend signal of the monitored deformation data, quantitative analysis of the deformation trend is performed:

[0117] ΔL i =f(T i ,P i ,t), where ΔL i is the deformation of the plastic part in the ith region, T i is the temperature of the ith region, P i is the pressure of the ith region, t is the time; real-time feedback of deformation trend;

[0118] Based on the deformation trend signal monitored in real time, the cooling rate of each temperature control zone is adjusted:

[0119] R c,i =α·(ΔL i -L 0i ), where R c,i is the cooling rate of the ith region, α is the adjustment factor of the cooling rate, L 0i is the initial size of the i-th region; thereby the dynamic adjustment of the cooling rate is matched with the actual deformation trend, the cooling rate is flexibly accelerated or slowed down according to the deformation of each region, and warping caused by overcooling is avoided;

[0120] During the cooling process of plastic parts, thin-walled and curved areas will produce large deformations. Therefore, the feedback signal of the temperature control system is used to pre-compensate the deformation-prone areas, that is, to offset or reduce the warping caused by stress concentration during the cooling process by adjusting the temperature.

[0121] Pre-deformation compensation formula: ΔT i =β·(ΔL i -L 0i ), where ΔT i is the temperature change of the i-th region, β is the temperature compensation factor, ΔL i is the deformation of the ith region;

[0122] By adjusting the temperature, the temperature control system can compensate for the temperature in advance during the cooling stage of the plastic parts based on the deformation trend prediction. For example, it can moderately heat the warped area to suppress deformation during the cooling process.

[0123] The temperature control unit of each temperature control zone adjusts the temperature of the corresponding area according to the above deformation trend signal. The temperature control system executes the linkage adjustment strategy according to the feedback signal of each temperature control zone:

[0124] T i =T set,i +ΔT i , where T i is the adjusted temperature of the ith region, T set,i is the preset target temperature, ΔT i is the temperature adjustment amount; the temperature control system adjusts the temperature of each area according to the real-time feedback deformation signal, thereby achieving pre-deformation compensation;

[0125] The entire temperature control system dynamically adjusts the cooling rate and temperature of each temperature control zone based on real-time data and deformation prediction. in, is the rate of change of the temperature in the i-th region, ΔL i is the deformation of the ith region, R c,i is the cooling rate of the i-th region, ΔT i It is the temperature compensation amount; through linkage control, it can be adjusted in real time during the forming process to avoid deformation problems caused by local uneven cooling;

[0126] Specifically, through dynamic temperature control and deformation compensation methods, the deformation problem of air purifier plastic parts during the cooling process can be effectively solved, and precise adjustment of cooling rate and temperature compensation can be ensured, thereby optimizing deformation control during the injection molding process and improving product precision and quality.

[0127] Step S4, real-time online detection,

[0128] During the injection molding process, the deformation parameters of the plastic parts monitored by the deformation sensor are fed back to the temperature control system. Once abnormal deformation is detected, the temperature, holding time and cooling rate are automatically adjusted.

[0129] In step S4, the real-time online detection method is:

[0130] During the injection molding process, the deformation parameters of the plastic parts are monitored in real time based on the deformation sensor. Through the feedback mechanism, when abnormal deformation or dimensional deviation is detected, the temperature, holding time and cooling rate are automatically adjusted to correct the potential deformation problem.

[0131] During the molding process, deformation sensors (such as strain gauges or laser measurement systems) are used to monitor the deformation trends of key areas of plastic parts in real time, namely thin-walled and curved areas;

[0132] Deformation monitoring formula: ΔL(t) = f(T(t), σ(t), P(t), t), where ΔL(t) represents the deformation of the plastic part at time t, T(t) represents the surface temperature of the plastic part at time t, σ(t) represents the surface stress of the plastic part at time t, P(t) represents the pressure during the injection molding process, t represents the time variable, i.e., different time nodes during the molding process, and f represents the relationship between the length change ΔL(t) of the plastic part and multiple factors;

[0133] Based on the deformation data monitored in real time, combined with the design requirements and process standards of the injection molded parts, the deformation anomaly that exceeds the allowable range is identified. At this time, the feedback mechanism is activated to transmit the abnormal information to the temperature control system and the injection control system. The abnormal deformation identification formula is:

[0134] ΔL threshold (t) = α·L max ·(1+β·(T(t)-T 0 )), where ΔL threshold (t) represents the maximum acceptable deformation threshold of the plastic part at time t, L max It represents the maximum design length or size of the plastic part, α represents the coefficient related to the material properties, represents the deformation tolerance, β represents the influence coefficient of temperature on deformation, T 0 Indicates the reference temperature of the plastic part before injection molding. If ΔL(t) exceeds ΔL threshold (t), it is considered as abnormal deformation and the adjustment procedure is initiated;

[0135] According to the real-time monitored deformation data and the preset deformation threshold, the temperature control system adjusts the mold temperature, holding time and cooling rate to compensate and correct the deformation trend of the plastic part. The temperature control adjustment formula is:

[0136] ΔT(t)=γ·(ΔL threshold (t)-ΔL(t)), where ΔT(t) represents the temperature change that needs to be adjusted, γ represents the temperature adjustment response coefficient, which depends on the sensitivity of the material to temperature changes, and ΔL threshold (t) represents the preset maximum acceptable deformation threshold, and ΔL(t) represents the actual deformation at the current moment;

[0137] The rate adjustment formula is: in, Indicates the cooling rate that needs to be adjusted, δ indicates the cooling response coefficient, which affects the relationship between cooling rate and deformation, ΔL threshold (t) represents the maximum acceptable deformation threshold, ΔL(t) represents the deformation at the current moment;

[0138] When necessary, adjust the holding time according to the deformation feedback to control the deformation of the plastic parts during the cooling process.

[0139] Δt press (t) = η·(ΔL threshold (t)-ΔL(t)), where Δt press (t) represents the holding time that needs to be adjusted, η represents the holding adjustment coefficient, which is determined according to the design complexity and material properties of the plastic part, ΔL threshold (t) represents the maximum acceptable deformation threshold, ΔL(t) represents the deformation at the current moment;

[0140] Based on the calculated adjustment parameters, the temperature control system makes corresponding adjustments under the real-time feedback mechanism. The adjustment parameters are transmitted back to the temperature control unit to fine-tune the temperature, cooling rate and holding time during the injection molding process in real time. new (t) = T(t) + ΔT(t),

[0141]

[0142] t press,new (t) = t press (t)+Δt press (t), where T new (t) represents the new injection mold temperature, represents the new cooling rate, t press,new (t) indicates the new holding time.

[0143] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An injection molding process for a plastic part of an air purifier, characterized in that: include, Step S1, multi-zone dynamic mold temperature adjustment, According to the thin-wall and curved surface structure characteristics of plastic parts, the mold is divided into multiple temperature control zones to form a multi-zone independent temperature control system; Heating elements and cooling channels are embedded in the temperature control areas of thin walls and curved surfaces that are prone to deformation. During the filling and holding stages, the temperature control system increases the temperature of the thin-walled area to reduce shrinkage stress, and quickly cools the thicker area to balance the overall molding speed. Step S2: simulation prediction and mold parameter adjustment. Before the injection molding process begins, Moldflow and ANSYSCAE simulation tools are used to predict the deformation trend of plastic parts during cooling and shrinkage, and mold parameters are adjusted based on the simulation results. Step S3: temperature control and deformation compensation are linked. During the injection molding process, the deformation trend of the plastic parts is monitored in real time, and the cooling rate of each temperature control zone is dynamically adjusted according to the feedback deformation trend signal; Step S4, real-time online detection, During the injection molding process, the deformation parameters of the plastic parts are monitored by deformation sensors and the deformation parameter data are fed back to the temperature control system. Once abnormal deformation is detected, the temperature, holding time and cooling rate are automatically adjusted.

2. The injection molding process of an air purifier plastic part according to claim 1, characterized in that: In step S1, each temperature control zone is deployed with an independent temperature control unit to monitor and manage the temperature in real time; the independent temperature control unit has a built-in deformation sensor to monitor the deformation parameters of the plastic part.

3. The injection molding process of an air purifier plastic part according to claim 2, characterized in that: In step S1, the multi-zone dynamic mold temperature adjustment method is: For each temperature control zone, cooling channel design and temperature control zone division are carried out based on heat conduction and heat diffusion requirements. The divided area of ​​the temperature control zone is A i The layout relationship with the cooling channel is defined as: A i Represents the cooling area of ​​the temperature control zone, V i Indicates the volume of the plastic part in the temperature control zone, k i Represents the thermal conductivity of the material in this area, ΔT i Indicates the temperature difference in the temperature control zone, that is, the difference between the mold set temperature and the actual temperature of the plastic part; At different stages of injection molding, the temperature control system adjusts the temperature of the temperature control zone in real time according to the cooling requirements of different areas. The temperature adjustment method is: Among them, T i (t) represents the temperature of temperature control zone i at time t, T i0 represents the initial temperature of temperature control zone i, Q i represents the heat supplied by temperature control zone i, m i represents the mass of the plastic part in the temperature control zone i, c i represents the specific heat capacity of the plastic part in the temperature control zone i, τ i Represents the thermal response time constant of temperature control zone i.

4. The injection molding process of an air purifier plastic part according to claim 3, characterized in that: In step S1, the multi-zone dynamic mold temperature adjustment method further includes: In thin-walled areas, the temperature control system raises the area temperature to a preset value: Among them, T target represents the target temperature of the thin-walled area, T initial represents the initial temperature of the thin-walled region, T max represents the maximum temperature of the thin-walled area, t0 represents the time constant, indicating the time when the temperature reaches the target value, and τ represents the thermal response time, which controls the temperature change rate; For thicker areas: in, represents the cooling rate, T initial represents the initial temperature, T min Indicates the set cooling end temperature, Δt indicates the time period of the cooling process; Each temperature control zone is equipped with an independent temperature control unit and deformation sensor for real-time monitoring and dynamic adjustment. The real-time feedback mechanism of temperature control is as follows: ΔT adjust =α·(T current -T target )+β·(F strain -F target ), where ΔT adjust Indicates the adjusted temperature change, T current Indicates the current temperature, T target Indicates the target temperature, F strain Indicates the current deformation detected by the deformation sensor, F target represents the target deformation, α and β represent adjustment coefficients, which are used to balance the control of temperature and deformation.

5. The injection molding process of an air purifier plastic part according to claim 4, characterized in that: In step S2, the method of adjusting the mold parameters according to the simulation results includes: During the simulation phase, potential deformation risks in thin-walled and curved areas are identified, and mold geometry and cooling channel layout are adjusted based on the deformation risks. At the same time, the simulation data is used to guide the temperature control system in step S1 to adjust the cooling rate and temperature of each temperature control zone.

6. The injection molding process of an air purifier plastic part according to claim 5, characterized in that: In step S2, the simulation prediction and mold parameter adjustment method is: Identify the potential deformation risk of thin-walled and curved areas and perform thermal stress field analysis. The calculation formula for thermal stress field is: σ thermal =E·ΔT·α, where σ thermal It represents thermal stress, which refers to the stress caused by temperature changes in the cooling process of plastic parts. E represents the Young's modulus of the material, which refers to the elastic modulus of the material and is used to measure the rigidity of the material. ΔT represents the temperature difference, which is the difference between the mold surface temperature and the melt temperature of the plastic part. α represents the thermal expansion coefficient, which describes the degree of change in volume or length of the material when the temperature changes. The cooling process of plastic parts is accompanied by shrinkage. Uneven shrinkage will cause deformation. Here, the shrinkage stress model of plastic parts is modeled: Among them, σshrink represents shrinkage stress, which represents the stress caused by the volume shrinkage of the plastic during the cooling process, E represents Young's modulus, Δε represents strain, which represents the relative deformation caused by the volume shrinkage of the plastic part during the cooling process, and v represents the Poisson's ratio of the material, which is dimensionless and represents the ratio of the strain of the material in one direction to the strain in the perpendicular direction.

7. The injection molding process of an air purifier plastic part according to claim 6, characterized in that: In step S2, the geometric shape and cooling channel layout of the mold are adjusted according to the thermal stress and shrinkage stress data obtained by simulation: The mold design process performs reverse compensation based on the possible deformation of the plastic parts during the cooling process, and uses finite element analysis (FEA) to optimize the mold shape. The geometric adjustment formula for reverse compensation is: Among them, Δx represents the mold shape fine-tuning amount, that is, the compensated deformation, σ thermal It represents thermal stress, which is obtained by analyzing the thermal stress field. L represents the length of a specific area of ​​the plastic part, that is, the length of the area that needs to be compensated. E represents Young's modulus. The goal of cooling channel design optimization is to keep the heat flow balanced: Among them, Q represents heat flow, that is, the heat conducted during the cooling process, k represents the thermal conductivity of the material, A represents the cross-sectional area of ​​the cooling channel, ΔT represents the temperature difference, which refers to the temperature difference inside and outside the cooling channel, and d represents the length of the cooling channel. The length of the cooling channel affects the conduction efficiency of the heat flow.

8. The injection molding process of an air purifier plastic part according to claim 7, characterized in that: In step S3, based on the real-time data of the multi-zone temperature control system, the temperature of the easily deformed area is adjusted to perform pre-deformation compensation.

9. The injection molding process of an air purifier plastic part according to claim 8, characterized in that: In step S3, the linkage between temperature control and deformation compensation is performed as follows: During the injection molding process, deformation sensors are first used to obtain the deformation data of plastic parts in real time. Based on the deformation trend signal of the monitored deformation data, quantitative analysis of the deformation trend is performed: ΔL i =f(T i , P i , t), where ΔL i is the deformation of the plastic part in the ith region, T i is the temperature of the ith region, P i is the pressure in the ith region, and t is the time; Based on the deformation trend signal monitored in real time, the cooling rate of each temperature control zone is adjusted: R c，i =α·(ΔL i -L 0i ), where R c，i is the cooling rate of the ith region, α is the adjustment factor of the cooling rate, L 0i is the initial size of the i-th region; During the cooling process of plastic parts, thin-walled and curved areas will produce large deformations. Therefore, the feedback signal of the temperature control system is used to pre-compensate the deformation-prone areas. Pre-deformation compensation formula: ΔT i =β·(ΔL i -L 0i ), where ΔT i is the temperature change of the i-th region, β is the temperature compensation factor, ΔL i is the deformation of the ith region; The temperature control unit of each temperature control zone adjusts the temperature of the corresponding area according to the above deformation trend signal. The temperature control system executes the linkage adjustment strategy according to the feedback signal of each temperature control zone: T i =T set，i +ΔT i , where T i is the adjusted temperature of the ith region, T set，i is the preset target temperature, ΔT i is the temperature adjustment amount; The entire temperature control system dynamically adjusts the cooling rate and temperature of each temperature control zone based on real-time data and deformation prediction. in, is the rate of change of the temperature in the i-th region, ΔL i is the deformation of the ith region, R c，i is the cooling rate of the i-th region, ΔT i is the temperature compensation amount.

10. The injection molding process of an air purifier plastic part according to claim 9, characterized in that: In step S4, the real-time online detection method is: During the molding process, deformation sensors are used to monitor the deformation trends of key areas of plastic parts, i.e. thin-wall and curved areas, in real time. Deformation monitoring formula: ΔL(t) = f(T(t), σ(t), P(t), t), where ΔL(t) represents the deformation of the plastic part at time t, T(t) represents the surface temperature of the plastic part at time t, σ(t) represents the surface stress of the plastic part at time t, P(t) represents the pressure during the injection molding process, t represents the time variable, i.e., different time nodes during the molding process, and f represents the relationship between the length change ΔL(t) of the plastic part and multiple factors; Based on the deformation data monitored in real time, combined with the design requirements and process standards of the injection molded parts, the deformation anomaly that exceeds the allowable range is identified. At this time, the feedback mechanism is activated to transmit the abnormal information to the temperature control system and the injection control system. The abnormal deformation identification formula is: ΔL threshold (t) = α·L max ·(1+β·(T(t)-T0)), where ΔL threshold (t) represents the maximum acceptable deformation threshold of the plastic part at time t, L max It represents the maximum design length or size of the plastic part, α represents the coefficient related to the material properties, represents the deformation tolerance, β represents the influence coefficient of temperature on deformation, T0 represents the reference temperature of the plastic part before injection molding, if ΔL(t) exceeds ΔL threshold (t), it is considered as abnormal deformation and the adjustment procedure is initiated; According to the real-time monitored deformation data and the preset deformation threshold, the temperature control system adjusts the mold temperature, holding time and cooling rate to compensate and correct the deformation trend of the plastic part. The temperature control adjustment formula is: ΔT(t)=γ·(ΔL threshold (t)-ΔL(t)), where ΔT(t) represents the temperature change that needs to be adjusted, γ represents the temperature adjustment response coefficient, which depends on the sensitivity of the material to temperature changes, and ΔL threshold (t) represents the preset maximum acceptable deformation threshold, and ΔL(t) represents the actual deformation at the current moment; The rate adjustment formula is: in, Indicates the cooling rate that needs to be adjusted, δ indicates the cooling response coefficient, which affects the relationship between cooling rate and deformation, ΔL threshold (t) represents the maximum acceptable deformation threshold, ΔL(t) represents the deformation at the current moment; Based on the calculated adjustment parameters, the temperature control system makes corresponding adjustments under the real-time feedback mechanism. The adjustment parameters are transmitted back to the temperature control unit to fine-tune the temperature and cooling rate during the injection molding process in real time. T new (t)=T(t)+ΔT(t), Among them, T new (t) represents the new injection mold temperature, Indicates the new cooling rate.

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