Mould infrared temperature measuring and adjusting device for preventing stress lines of neutral borosilicate molded bottle

Abstract

The invention relates to the technical field of medicinal glass forming equipment, and discloses a mold infrared temperature measurement and temperature regulation device for preventing neutral borosilicate molded bottle stress grains, which comprises a machine body, a touch screen is mounted on the outer side of the machine body, and a control system electrically connected with the touch screen is arranged in the machine body. A molten salt circulating assembly is arranged in the machine body, the molten salt circulating assembly is used for cooling a high-temperature area of the mold, and a nanofluid circulating assembly is arranged in the machine body and is used for heating a low-temperature area of the mold; and the fused salt circulating assembly comprises a fused salt pump, the fused salt pump is installed in the machine body, and the input end of the fused salt pump is fixedly connected with a second storage box. Through closed-loop control of high-precision temperature measurement, intelligent prediction and quick response, active refined management of a mold temperature field is realized, and generation of stress lines of the neutral borosilicate molded bottle is inhibited, so that the product quality and the production qualification rate are improved.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical glass forming equipment technology, specifically to an infrared temperature measurement and control device for molds used to prevent stress marks on neutral borosilicate molded bottles. Background Technology

[0002] Neutral borosilicate glass, due to its excellent chemical and thermal stability, is widely used in high-end pharmaceutical packaging, particularly in the production of molded vials. In the hot bending process of neutral borosilicate molded vials, temperature field control of the mold is a crucial factor determining the final product quality. Any inhomogeneity or drastic fluctuations in the temperature field will generate uneven thermal stress during the glass cooling process. When this stress exceeds the glass's tolerance limit, permanent internal defects, known as stress lines, will form. Stress lines not only affect the product's aesthetics and optical performance but, more seriously, reduce its mechanical strength, posing a potential threat to drug safety. Therefore, achieving precise and proactive control of the mold temperature field is the core technical challenge in preventing stress lines in neutral borosilicate molded vials.

[0003] Current technologies for controlling mold temperature have several fundamental limitations. First, temperature monitoring methods generally rely on point-based measurements using contact sensors such as thermocouples embedded at specific locations on the mold. Point-based measurements can only acquire temperature data from a limited number of points on the mold, leaving vast non-measuring areas as monitoring blind spots. Localized hot or cold spots on the mold surface cannot be detected in a timely manner. The control system adjusts based on this discrete and incomplete data, significantly reducing its effectiveness. Consequently, stress pattern problems caused by inadequate localized temperature monitoring remain difficult to resolve.

[0004] Secondly, at the temperature control strategy level, most existing control systems rely on feedback adjustment based on the deviation of the absolute temperature value. This approach lacks the ability to analyze temperature change trends and the uniformity of temperature distribution. Essentially, it is a delayed, passive response; the control system can only intervene after the temperature at a certain measuring point has deviated from the set value, and cannot predict dynamic temperature changes. By the time the controller responds, the uneven temperature field has already irreversibly affected the molding quality of the glass bottle, failing to effectively suppress localized overheating or undercooling that leads to stress lines.

[0005] Finally, at the actuator level of temperature regulation, traditional temperature control methods, such as using single electric heating or conventional fluid cooling, often suffer from limitations in temperature regulation capabilities, including slow response speed and low regulation efficiency. When the control system issues a temperature regulation command, the actual temperature change of the mold is delayed. This is especially true when rapid cooling of high-temperature areas or rapid heating of low-temperature areas is required, where the response capability is severely insufficient. This prevents the system from quickly eliminating transient local temperature differences, resulting in the inability to effectively and accurately execute temperature regulation decisions, thus making it difficult to guarantee control effectiveness. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an infrared temperature measurement and control device for molds that prevent stress marks on neutral borosilicate molded bottles. This device solves the technical problems in existing technologies, such as incomplete temperature field monitoring due to point-type temperature measurement, lagging and unpredictable control strategies, and slow response and low efficiency of the temperature control actuator, which make it difficult to effectively suppress stress marks on neutral borosilicate molded bottles.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an infrared temperature measurement and control device for preventing stress marks on neutral borosilicate molded bottles, comprising: The machine body has a touch screen installed on its outer side and a control system electrically connected to the touch screen installed inside the machine body. The machine body also has a molten salt circulation component for cooling the high-temperature zone of the mold and a nanofluid circulation component for heating the low-temperature zone of the mold. The molten salt circulation assembly includes a molten salt pump installed inside the machine body. A storage tank is fixedly connected to the input end of the molten salt pump. A connecting pipe is fixedly connected to the top of the storage tank, and a cooler is fixedly connected to the other end of the connecting pipe. A return pipe is fixedly connected to the side of the cooler away from the connecting pipe, and a confluence block is fixedly connected to the other end of the return pipe. The output end of the molten salt pump is fixedly connected to a delivery pipe, and a diverter block is fixedly connected to the other end of the delivery pipe. Multiple piezoelectric ceramic driven proportional valves are installed on the side of the diverter block away from the delivery pipe, and a delivery pipe is fixedly connected to the end of each piezoelectric ceramic driven proportional valve away from the diverter block.

[0008] Preferably, the nanofluid circulation assembly includes a magnetically driven pump installed inside the body. A heater is fixedly connected to the input end of the magnetically driven pump. A connecting pipe is fixedly connected to the top of the heater. A storage tank is fixedly connected to the other end of the connecting pipe. A return pipe is fixedly connected to the outside of the storage tank. A confluence block is fixedly connected to the other end of the return pipe. A delivery pipe is fixedly connected to the output end of the magnetically driven pump. A diverter block is fixedly connected to the other end of the delivery pipe. Multiple piezoelectric ceramic proportional valves are installed on the side of the diverter block away from the delivery pipe.

[0009] Preferably, the support base has a raw material conveying mechanism installed on the top right side of the support base. The output end of the raw material conveying mechanism is fixedly connected to one side of the second support block. The other side of the second support block is fixedly connected to a fixed mold. A push mold mechanism is installed on the top left side of the support base. The output end of the push mold mechanism is fixedly connected to a pressing mold. Both the fixed mold and the pressing mold have multiple micro-channels inside. Each micro-channel has a channel inlet and a channel outlet. A first support block is fixedly connected to the top of the support base. An infrared detection mechanism is installed on the top of the first support block. The infrared detection mechanism includes a servo pan-tilt unit and an infrared thermal imager.

[0010] Preferably, a support platform is fixedly connected inside the machine body, and the storage tank and the bottom of the cooler are both installed on the top of the support platform. The piezoelectric ceramic driven proportional valve is connected to the flow channel inlet through the delivery pipe three, the flow channel outlet is connected to the confluence block one through an additional pipe, the piezoelectric ceramic driven proportional valve two is connected to the flow channel inlet through an additional pipe, and the flow channel outlet is connected to the confluence block two through an additional pipe.

[0011] Preferably, the control system includes: A temperature field acquisition module is electrically connected to the infrared detection mechanism. The temperature field acquisition module is used to drive the infrared detection mechanism to scan the surfaces of the fixed mold and the pressing mold, and generate a real-time temperature matrix. The feature extraction and decision module is used to acquire the real-time temperature matrix and associate the data of the real-time temperature matrix with multiple mold partitions corresponding to the multiple micro-flow channels. It processes the temperature data of the multiple mold partitions based on the intelligent temperature compensation algorithm stored in the control system, thereby generating control commands for the multiple mold partitions respectively. A collaborative temperature control execution module is used to receive control commands for multiple mold zones and drive the molten salt circulation component and the nanofluid circulation component to collaboratively adjust the temperature of the multiple mold zones according to the control commands for the multiple mold zones.

[0012] Preferably, the temperature field acquisition module is specifically used for: The infrared data in the 3-5μm band and the 8-14μm band collected by the infrared thermal imager are fused together, and a gridded temperature matrix with a resolution of not less than 256×256 is constructed as the real-time temperature matrix.

[0013] Preferably, when processing the temperature data of the multiple mold partitions, the feature extraction and decision module is also used to calculate the spatial temperature gradient characterizing the severity of local temperature differences and the temporal temperature gradient characterizing the rate of temperature change, and uses the spatial temperature gradient and the temporal temperature gradient for the calculation of the intelligent temperature compensation algorithm to generate control commands for the multiple mold partitions that can intervene in advance for potential drastic temperature changes. Wherein: The spatial temperature gradient Calculated using the following formula: ; in, This represents the magnitude of the space temperature gradient; and The temperature field is respectively in and Partial derivatives in direction; This refers to the spatial coordinate index in the temperature matrix; For time steps.

[0014] The time-temperature gradient Calculated using the following formula: ; in, For time-temperature gradient; For the current time step Temperature value; For the previous time step Temperature value; This represents the sampling time interval.

[0015] Preferably, the intelligent temperature compensation algorithm includes a prediction model based on a long short-term memory network and a thermal deformation compensation model based on the thermal expansion coefficient of the mold material. The prediction model uses the temperature data of the multiple mold zones, the spatial temperature gradient, and the temporal temperature gradient to predict future temperature changes. The thermal deformation compensation model dynamically corrects the temperature setting value required for the process based on the temperature data of the multiple mold partitions and the stored thermal expansion coefficient of the mold material.

[0016] Preferably, the collaborative temperature control execution module is used to selectively drive the molten salt circulation component or the nanofluid circulation component to adjust the temperature based on a comparison between the temperature of the mold zone and a system-set temperature threshold, specifically: When the temperature of the mold zone is higher than the temperature threshold set by the system, the molten salt circulation component is activated; When the temperature of the mold partition is lower than the temperature threshold set by the system, the nanofluid circulation component is driven.

[0017] Preferably, the collaborative temperature control execution module executes the control command through the piezoelectric ceramic driven proportional valve one and the piezoelectric ceramic driven proportional valve two, for rapidly adjusting the flow rate of the molten salt circulation component and the nanofluid circulation component.

[0018] This invention provides an infrared temperature measurement and control device for molds used to prevent stress marks on neutral borosilicate molded bottles. It has the following beneficial effects: 1. This invention uses an infrared detection mechanism to perform non-contact, continuous scanning of the surfaces of the fixed mold and the pressing mold, which generates a real-time temperature matrix with dense data points. Compared with the traditional point-based temperature measurement method, this invention can obtain the temperature field distribution of the entire mold surface in real time and comprehensively, providing a complete data foundation for precise temperature adjustment, thereby solving the stress texture problem caused by inadequate local temperature monitoring. 2. This invention introduces the calculation of spatial temperature gradient and temporal temperature gradient through feature extraction and decision module, so that the control system not only focuses on the absolute value of temperature, but can also identify and intervene in potential areas of drastic temperature change in advance, thereby suppressing local overheating or overcooling phenomena that lead to stress texture, and making the temperature control have higher stability and predictive control capabilities. 3. By setting up a molten salt circulation component and a nanofluid circulation component, which are selectively driven by a collaborative temperature control execution module, the present invention can use corresponding heat transfer media to regulate the high-temperature and low-temperature zones of the mold respectively, thereby improving the response speed and efficiency of high-temperature cooling and low-temperature heating, and ensuring that the control system decisions can be executed quickly and accurately. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the body of the present invention; Figure 3 This is a schematic diagram of the molten salt circulation assembly of the present invention; Figure 4 This is a schematic diagram of the nanofluidic circulation component of the present invention; Figure 5 This is a schematic diagram of the support base of the present invention; Figure 6 This is a schematic diagram illustrating the collaborative relationships and data flow of the core modules of this invention; Figure 7 This is a schematic diagram illustrating the workflow of the feature extraction and decision-making module of the present invention; Figure 8 This is a schematic diagram of the closed-loop control process of the collaborative temperature control execution module of the present invention.

[0020] The components are as follows: 1. Main body; 2. Touch screen; 3. Support base; 4. Raw material conveying mechanism; 5. Push mold mechanism; 6. Support block one; 7. Infrared detection mechanism; 8. Fixed mold; 9. Pressing mold; 10. Support block two; 11. Magnetic drive pump; 12. Heater; 13. Connecting pipe one; 14. Storage tank one; 15. Return pipe one; 16. Merging block one; 17. Conveying pipe three; 18. Conveying pipe one; 19. Molten salt pump; 20. Connecting pipe two; 21. Cooler; 22. Return pipe two; 23. Support platform; 24. Storage tank two; 25. Conveying pipe two; 26. Diverting block one; 27. Piezoelectric ceramic driven proportional valve one; 28. Merging block two; 29. ​​Diverting block two; 30. Piezoelectric ceramic driven proportional valve two. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] See attached document Figure 1 -Appendix Figure 5 This invention provides an infrared temperature measurement and control device for molds used to prevent stress marks on neutral borosilicate molded bottles. The device includes a body 1 and a support base 3. A touch screen 2 is installed on the outer surface of the body 1 for parameter setting and status display, facilitating real-time control of the infrared temperature measurement and control device for molds used to prevent stress marks on neutral borosilicate molded bottles by the operator. The body 1 contains a molten salt circulation component and a nanofluid circulation component. The molten salt circulation component is used to cool the high-temperature area of ​​the mold, and the nanofluid circulation component is used to heat the low-temperature area of ​​the mold.

[0023] The top of the support base 3 is equipped with a raw material conveying mechanism 4 and a push mold mechanism 5. The output end of the push mold mechanism 5 is connected to the pressing mold 9 and is used to drive the pressing mold 9 to perform opening and closing actions. The output end of the raw material conveying mechanism 4 is connected to the fixed mold 8 through the support block 2 10.

[0024] The fixed mold 8 and the pressing mold 9 cooperate to form a mold cavity for molding neutral borosilicate glass bottles. The output end of the pushing mold mechanism 5 is fixedly connected to the pressing mold 9 and is used to drive the pressing mold 9 to move along a preset path, thereby realizing the periodic closing and separating action of the pressing mold 9 and the fixed mold 8. The output end of the raw material conveying mechanism 4 is fixedly connected to the fixed mold 8 through the second support block 10. The second support block 10 is used to fix the fixed mold 8 and support the load generated during the molding process. The raw material conveying mechanism 4 is used to convey the raw materials required for manufacturing neutral borosilicate molded bottles.

[0025] To achieve precise temperature control of the mold, both the fixed mold 8 and the pressing mold 9 are machined with multiple independent micro-channels. Each micro-channel has a channel inlet and a channel outlet, which are used to connect to the pipelines of the molten salt circulation component or the nanofluid circulation component to form an independent temperature control loop.

[0026] The spatial layout of multiple microchannels corresponds to multiple pre-set mold zones on the mold surface. This correspondence allows for independent temperature regulation of the mold zone corresponding to a specific microchannel by controlling the type and flow rate of the medium flowing into that microchannel, thus providing a foundation for zoned and refined temperature control in the subsequent control system.

[0027] The top of the support base 3 is also fixedly connected to an infrared detection mechanism 7 via a support block 6. The infrared detection mechanism 7 includes a servo gimbal and an infrared thermal imager. The servo gimbal is used to drive the infrared thermal imager to scan the surfaces of the fixed mold 8 and the pressing mold 9 to obtain surface temperature data.

[0028] By mounting the infrared detection mechanism 7 on the support block 6 at the top of the support base 3, the infrared detection mechanism 7 has a field of view that can completely cover the working surfaces of the fixed mold 8 and the pressing mold 9, ensuring the comprehensiveness of temperature data acquisition.

[0029] The infrared detection mechanism 7 specifically includes a servo pan-tilt unit and an infrared thermal imager. The infrared thermal imager is installed at the movable end of the servo pan-tilt unit. During operation, the control system drives the servo pan-tilt unit to drive the infrared thermal imager to perform periodic reciprocating scans on the surfaces of the fixed mold 8 and the pressing mold 9 according to a preset scanning trajectory.

[0030] Through this scanning process, the infrared thermal imager can continuously collect infrared radiation information from the mold surface and transmit this information in real time to the temperature field acquisition module in the control system for subsequent generation of a real-time temperature matrix. By adopting a non-contact measurement method, physical interference with the mold surface is avoided, and high-density temperature data points can be obtained.

[0031] The infrared temperature measurement and control device for preventing stress marks on neutral borosilicate molded bottles also includes a control system. The control system includes a temperature field acquisition module, a feature extraction and decision module, and a collaborative temperature control execution module. The temperature field acquisition module is electrically connected to the infrared detection mechanism 7, and the collaborative temperature control execution module is electrically connected to the execution components in the molten salt circulation assembly and the nanofluid circulation assembly.

[0032] See attached document Figure 1 -Appendix Figure 3 The molten salt circulation assembly is used to regulate the temperature of the high-temperature areas that need to be cooled in the fixed mold 8 and the pressing mold 9, and forms a complete closed loop for conveying the cooling medium.

[0033] The molten salt circulation assembly includes a molten salt pump 19, a storage tank 24, a cooler 21, a confluence block 16, a diversion block 26, and multiple piezoelectric ceramic driven proportional valves 27. The output end of the molten salt pump 19 is fixedly connected to the diversion block 26 via a delivery pipe 25. Multiple piezoelectric ceramic driven proportional valves 27 are installed on the side of the diversion block 26 away from the delivery pipe 25. The end of each piezoelectric ceramic driven proportional valve 27 away from the diversion block 26 is fixedly connected to a fixed mold via an independent delivery pipe 3 17. The flow inlet of a micro-flow channel inside the 8 or pressing mold 9, the flow outlet of the micro-flow channel is connected to the confluence block 16 through an additional pipeline, the confluence block 16 is fixedly connected to one end of the return pipe 22, the other end of the return pipe 22 is fixedly connected to the side of the cooler 21 away from the connecting pipe 20, the cooler 21 is fixedly connected to one end of the connecting pipe 20, the other end of the connecting pipe 20 is fixedly connected to the top of the storage tank 24, and the bottom of the storage tank 24 is fixedly connected to the input end of the molten salt pump 19.

[0034] Cooler 21 is used to cool the molten salt that has absorbed heat and flows back from the mold, while piezoelectric ceramic driven proportional valve 27 is used to independently and quickly proportionally adjust the flow rate of molten salt flowing into each microchannel according to the control command issued by the coordinated temperature control execution module.

[0035] Specifically, when the feature extraction and decision-making module determines, based on the analysis results of the real-time temperature matrix, that the temperature of one or more mold zones exceeds the upper limit threshold set by the process, the collaborative temperature control execution module immediately initiates the high-temperature cooling process. First, it sends a command to one or more piezoelectric ceramic driven proportional valves 27 corresponding to the abnormally high-temperature zone, precisely increasing their valve opening. Simultaneously, the molten salt pump 19 starts or increases its operating power, pumping the molten salt stored in the storage tank 24 to the distribution block 26 via the delivery pipe 25. The molten salt is distributed at the distribution block 26 and flows through the corresponding opened piezoelectric ceramic driven proportional valve 27 according to the command. It then enters the micro-channel inside the target mold zone through the delivery pipe 17. The low-temperature molten salt efficiently absorbs the excess heat of the zone within the channel, achieving rapid cooling. After heat exchange is completed, the heated molten salt flows out from the outlet of the flow channel, merges into the confluence block 16, and then enters the cooler 21 for forced cooling via the return pipe 22. The cooled molten salt returns to the storage tank 24 via the connecting pipe 20, completing a closed-loop cooling cycle. This process continues until the temperature of the zone reported by the infrared detection mechanism 7 returns to the normal range.

[0036] See attached document Figure 1 Appendix Figure 2 and attached Figure 4The nanofluid circulation component is used to regulate the temperature of the low-temperature zones that need to be heated in the fixed mold 8 and the pressing mold 9, and forms a complete closed loop for conveying the heating medium.

[0037] The nanofluid circulation assembly includes a magnetically driven pump 11, a heater 12, a storage tank 14, a confluence block 28, a diversion block 29, and multiple piezoelectric ceramic driven proportional valves 30. The output end of the magnetically driven pump 11 is fixedly connected to the diversion block 29 via a delivery pipe 18. Multiple piezoelectric ceramic driven proportional valves 30 are installed on the side of the diversion block 29 away from the delivery pipe 18. Each piezoelectric ceramic driven proportional valve 30 is connected to the inlet of a microchannel inside the fixed mold 8 or the pressing mold 9 via an additional pipeline. The piezoelectric ceramic driven proportional valve 30 is used to execute control commands issued by the coordinated temperature control execution module. The flow rate of nanofluid flowing into each microchannel is independently and rapidly proportionally adjusted. The outlet of the microchannel is connected to the confluence block 28 via an additional pipeline. The confluence block 28 is fixedly connected to one end of the return pipe 15, and the other end of the return pipe 15 is fixedly connected to the storage tank 14. The storage tank 14 is fixedly connected to one end of the connecting pipe 13, and the other end of the connecting pipe 13 is fixedly connected to the heater 12. The heater 12 is used to heat the nanofluid in the circulation loop. The outlet end of the heater 12 is fixedly connected to the input end of the magnetic drive pump 11, thereby completing the construction of the entire heating circulation loop.

[0038] Specifically, when the feature extraction and decision module determines that the temperature of one or more mold zones is lower than the lower limit threshold set by the process, the collaborative temperature control execution module initiates the low-temperature heating process. It sends a command to one or more piezoelectric ceramic driven proportional valves 30 corresponding to the abnormally low-temperature zone, precisely increasing their valve opening. The magnetic drive pump 11 starts or increases its operating power, pumping the nanofluid stored in the storage tank 14 and preheated to the set temperature by the heater 12 to the distribution block 29 via the delivery pipe 18. The nanofluid is distributed at the distribution block 29 and flows through the corresponding opened piezoelectric ceramic driven proportional valve 30 according to the command, entering the microchannel inside the target mold zone. The high-temperature nanofluid transfers its heat to the zone within the channel, achieving rapid and uniform heating. After heat exchange, the cooled nanofluid flows out from the channel outlet, merges into the confluence block 28, returns to the storage tank 14 via the return pipe 15, and then reheats in the heater 12 via the connecting pipe 13, completing a closed-loop heating cycle. This process continues until the temperature of the partition returns to the normal set range.

[0039] See attached document Figure 6The temperature field acquisition module receives instructions from the feature extraction and decision module, and drives the servo gimbal of the infrared detection mechanism 7 accordingly, so that the infrared thermal imager continuously and repeatedly scans the working surfaces of the fixed mold 8 and the pressing mold 9 according to the preset scanning path and speed.

[0040] During the scanning process, the infrared thermal imager simultaneously acquires infrared radiation data in two independent bands, specifically a 3-5µm mid-wave infrared band corresponding to a wavelength... A wavelength corresponding to a long-wave infrared band data of 8-14µm The temperature field acquisition module receives these two sets of raw radiation intensity signal streams, each corresponding to a specific point on the mold surface. and .

[0041] To obtain accurate temperature values ​​and eliminate the influence of emissivity uncertainties caused by changes in material condition or oxide layer on the mold surface, the temperature field acquisition module incorporates a dual-band temperature calculation algorithm. This algorithm, based on Planck's law, uses the ratio of the radiation intensity at the same location in the mid-wave infrared and long-wave infrared bands to calculate the true temperature at that point. This calculation process eliminates the interference of emissivity as a variable on the temperature measurement results, thus obtaining a high-precision temperature reading unaffected by surface condition. Specifically, the dual-band temperature calculation algorithm calculates the ratio R of the radiation intensity at the two wavelengths and calculates the true temperature according to the following formula. : ; in, This represents the true absolute temperature of the surface of the mold being tested; represents the second radiation constant, which has a value of 14388 μm·K; This indicates the center wavelength of the first measurement band, which is the center wavelength of the infrared radiation signal measured by the mid-wave infrared thermal imager. This indicates the center wavelength of the second measurement band, which is the center wavelength of the infrared radiation signal measured by the long-wave infrared thermal imager. It represents the difference between the reciprocals of the center wavelengths of the two measurement bands, reflecting the wavelength interval characteristics of dual-band temperature measurement; Indicates at wavelength The infrared radiation intensity signal value measured at the location; Indicates at wavelength The infrared radiation intensity signal value measured at the location; The natural logarithm of the ratio of the radiation intensity signals measured at two wavelengths; The term representing the natural logarithm of the ratio of two wavelengths multiplied by 5 is used to correct for deviations in the distribution of radiant energy caused by wavelength differences. It represents the natural logarithm.

[0042] The temperature field acquisition module maps the precise temperature value of each independent temperature measurement point to its spatial coordinates during the scanning process. Finally, the module integrates and formats all temperature measurement data from the entire mold surface into a two-dimensional gridded real-time temperature matrix with a preset resolution. This real-time temperature matrix is ​​transmitted in real-time to the feature extraction and decision module as a data foundation for subsequent calculations of spatial and temporal temperature gradients.

[0043] See attached document Figure 7 The feature extraction and decision module receives a gridded real-time temperature matrix generated by the temperature field acquisition module. Internally, the feature extraction and decision module contains a refined partition map of the fixed mold 8 and the pressing mold 9. This refined partition map divides the mold surface into multiple independent mold partitions, each of which physically corresponds precisely to one or a group of micro-channels inside the mold. The feature extraction and decision module uses a spatial mapping algorithm to associate the pixel temperature data in the real-time temperature matrix with its corresponding mold partition, thereby obtaining the average temperature of each mold partition or the temperature value of a specific key point.

[0044] After acquiring real-time temperature data for each mold zone, the feature extraction and decision module calculates two key temperature gradient features to comprehensively evaluate the temperature state of the mold surface: spatial temperature gradient and temporal temperature gradient.

[0045] Space temperature gradient Used to quantify the non-uniformity of local temperature distribution on the surface of a mold. For any point in the temperature matrix... At time step The temperature, and its spatial temperature gradient The size is calculated using the following formula: ;

[0046] in, This represents the magnitude of the space temperature gradient; and The temperature field is respectively in and Partial derivatives in direction; This refers to the spatial coordinate index in the temperature matrix; For time steps.

[0047] The feature extraction and decision module can calculate the maximum or average spatial temperature gradient within each mold partition to reflect the temperature uniformity within that partition.

[0048] Time-temperature gradient Used to quantify the rate of change of local temperature on the mold surface over time. For any point in the temperature matrix... At time step The temperature, and its time-temperature gradient Calculated using the following formula: ; in, For time-temperature gradient; For the current time step Temperature value; For the previous time step Temperature value; This represents the sampling time interval.

[0049] The feature extraction and decision module calculates the average time temperature gradient for each mold partition to reflect the dynamic temperature change trend of that partition.

[0050] The feature extraction and decision-making module incorporates an intelligent temperature compensation algorithm. This algorithm comprises two core models: a prediction model based on a long short-term memory network and a thermal deformation compensation model.

[0051] See attached document Figure 8 The prediction model based on Long Short-Term Memory (LSTM) networks receives the real-time temperature of each mold zone at the current moment, along with the calculated spatial and temporal temperature gradients, as input. Pre-trained, the LSM-based model learns the complex nonlinear laws governing heat conduction in the mold and the glass forming process from these historical and current data. Through analysis of these features, the LSM-based model can accurately predict the temperature change trends of each mold zone at the next time step without additional intervention.

[0052] The thermal deformation compensation model is based on the coefficient of thermal expansion of the mold material and the real-time temperature of each mold section. For example, if the mold material is H13 steel, its coefficient of thermal expansion is... Can be set to The thermal deformation compensation model calculates the amount of thermal deformation caused by temperature changes based on the actual temperature of each zone of the mold. Based on the amount of thermal deformation, the thermal deformation compensation model dynamically corrects the process temperature setpoints of the mold partitions, thereby calculating the dynamically corrected temperature setpoints. This dynamically corrects the temperature setpoint. The calculation formula is as follows: ; in, This indicates the temperature value that needs to be adjusted due to thermal deformation compensation; This indicates the deviation of the current dimensions of the mold from the ideal dimensions; This indicates the coefficient of thermal expansion of the mold material, such as H13 steel. Value ; This indicates the initial design dimensions of the mold at the reference temperature.

[0053] The result obtained through calculation The thermal deformation compensation model will compensate and correct the preset process temperature setting in real time to ensure that the geometric accuracy of the mold during the molding process is not affected by thermal deformation caused by temperature fluctuations.

[0054] The feature extraction and decision-making module comprehensively considers the output of the prediction model based on the Long Short-Term Memory network, the compensation value of the thermal deformation compensation model, and the deviation between the real-time temperature of each mold zone and the set threshold. Combined with preset process parameters and stress pattern discrimination criteria, it generates independent temperature control instructions for each mold zone. The independent temperature control instructions contain specific temperature control targets (heating or cooling) and the required temperature control intensity, and are transmitted to the collaborative temperature control execution module in real time.

[0055] The collaborative temperature control execution module receives temperature adjustment commands for each independent mold zone from the feature extraction and decision module. The core function of the collaborative temperature control execution module is to convert the temperature adjustment commands for each independent mold zone into precise and quantified physical drive signals for each actuator in the molten salt circulation component and the nanofluid circulation component.

[0056] For each mold section Each of the collaborative temperature control execution modules runs an independent proportional-integral-derivative (PID) controller. The PID controller uses the dynamically corrected target setpoint temperature provided by the feature extraction and decision-making module. As input, the real-time temperature of this partition is obtained from the temperature field acquisition module. As feedback, the proportional-integral-derivative (PID) controller first calculates the temperature error at the current moment. : ; Based on this temperature error The proportional-integral-derivative controller calculates the values ​​for the mold partition. Control output The calculation process follows the formula below: ; in, This indicates that the proportional-integral-derivative controller is at time 10:00. Divide the mold The calculated total control output; Indicates mold partition At any moment Temperature error; This represents the cumulative sum of historical errors from the initial time 0 to the current time t; Indicates temperature error For time The rate of change; Indicates the proportional gain coefficient; Indicates the integral gain coefficient; Represents the differential gain coefficient; It is a time variable.

[0057] When the calculated temperature error A positive value indicates that the real-time temperature of the zone is lower than the target temperature, requiring a heating operation. In this case, the collaborative temperature control execution module will control the output. The value is mapped to the control voltage of the piezoelectric ceramic driven proportional valve 30 corresponding to that zone. This control voltage precisely controls the opening degree of valve 30, thereby regulating the flow rate of the high-temperature nanofluid entering the microchannel of that zone. At the same time, the coordinated temperature control execution module can adjust the operating power of the magnetic drive pump 11 according to the sum of the heating requirements of all zones to ensure the stability of the total pipeline pressure and flow rate.

[0058] When the calculated temperature error A negative value indicates that the real-time temperature of the zone is higher than the target temperature, requiring cooling. In this case, the collaborative temperature control execution module will control the output. The absolute value of this value is mapped to the control voltage of the piezoelectric ceramic-driven proportional valve 27 corresponding to that zone. This control voltage precisely controls the opening degree of valve 27, thereby regulating the flow rate of cryogenic molten salt entering the microchannel of that zone. Simultaneously, the coordinating temperature control module adjusts the operating power of the molten salt pump 19 based on the sum of the cooling requirements of all zones.

[0059] By configuring an independent proportional-integral-derivative control loop for each mold zone, the collaborative temperature control execution module realizes parallel, distributed, and high-precision closed-loop feedback control of the temperature field of the entire mold surface, ensuring that the temperature of each zone can quickly and stably converge to its dynamically changing target setpoint.

Claims

1. A mold infrared temperature measuring temperature adjusting device for preventing stress lines of a neutral borosilicate molded bottle, characterized by, Include: The body (1), the touch screen (2) is installed outside the body (1), and the control system electrically connected with the touch screen (2) is arranged inside the body (1), the molten salt circulating assembly is arranged inside the body (1), the molten salt circulating assembly is used for cooling the high temperature area of the mold, the nanofluid circulating assembly is arranged inside the body (1), and the nanofluid circulating assembly is used for heating the low temperature area of the mold; The molten salt circulating assembly includes a molten salt pump (19), the molten salt pump (19) is installed inside the body (1), the input end of the molten salt pump (19) is fixedly connected with a storage tank two (24), the top of the storage tank two (24) is fixedly connected with one end of a connecting pipe two (20), the other end of the connecting pipe two (20) is fixedly connected with a cooler (21), the cooler (21) is fixedly connected with one end of a return pipe two (22) on the side away from the connecting pipe two (20), the other end of the return pipe two (22) is fixedly connected with a confluence block one (16), the output end of the molten salt pump (19) is fixedly connected with one end of a delivery pipe two (25), the other end of the delivery pipe two (25) is fixedly connected with a shunt block one (26), a plurality of piezoelectric ceramic drive proportional valves one (27) are installed on the side away from the delivery pipe two (25) of the shunt block one (26), and one end of the piezoelectric ceramic drive proportional valve one (27) is fixedly connected with a delivery pipe three (17).

2. The mold infrared temperature measuring and temperature adjusting device for preventing stress lines of a neutral borosilicate molded bottle according to claim 1, characterized in that, The nanofluid circulating assembly includes a magnetic drive pump (11), the magnetic drive pump (11) is installed inside the body (1), the input end of the magnetic drive pump (11) is fixedly connected with a heater (12), one end of a connecting pipe one (13) is fixedly connected with the top end of the heater (12), the other end of the connecting pipe one (13) is fixedly connected with a storage tank one (14), one end of a return pipe one (15) is fixedly connected with the outside of the storage tank one (14), the other end of the return pipe one (15) is fixedly connected with a confluence block two (28), one end of a delivery pipe one (18) is fixedly connected with the output end of the magnetic drive pump (11), the other end of the delivery pipe one (18) is fixedly connected with a shunt block two (29), a plurality of piezoelectric ceramic drive proportional valves two (30) are installed on the side away from the delivery pipe one (18) of the shunt block two (29).

3. The mold infrared temperature measuring temperature regulating device for preventing stress lines of a neutral borosilicate molded bottle according to claim 2, characterized in that, Also include support seat (3), the support seat (3) top right side is equipped with raw material conveying mechanism (4), the output end of raw material conveying mechanism (4) is fixedly connected with support block two (10) one side, the other side of support block two (10) is fixedly connected with fixed mold (8), the support seat (3) top left side is equipped with push mold mechanism (5), the output end of push mold mechanism (5) is fixedly connected with compression mold (9), the fixed mold (8) and the compression mold (9) inside are all provided with a plurality of micro flow channels, each micro flow channel has flow channel entrance and flow channel exit, the support seat (3) top is fixedly connected with support block one (6), the support block one (6) top is equipped with infrared detection mechanism (7), and the infrared detection mechanism (7) mechanism includes servo holder and infrared thermal imager.

4. The mold infrared temperature measuring temperature regulating device for preventing stress lines of a molded bottle made of neutral borosilicate according to claim 3, characterized by, The body (1) is fixedly connected with a support table (23) inside, the storage box one (14) and the cooler (21) bottom are both installed on the support table (23) top, the piezoelectric ceramic drive proportional valve one (27) is connected with the flow channel entrance through the conveying pipe three (17), the flow channel exit is connected with the confluence block one (16) through additional pipeline, the piezoelectric ceramic drive proportional valve two (30) is connected with the flow channel entrance through additional pipeline, and the flow channel exit is connected with the confluence block two (28) through additional pipeline.

5. The mold infrared temperature measuring temperature regulating device for preventing stress lines of a molded bottle made of neutral borosilicate according to claim 3, characterized by, The control system comprises: A temperature field acquisition module electrically connected with the infrared detection mechanism (7), configured to drive the infrared detection mechanism (7) to scan surfaces of the fixed mold (8) and the compression mold (9) and generate a real-time temperature matrix; A feature extraction and decision module configured to obtain the real-time temperature matrix, associate data of the real-time temperature matrix with a plurality of mold partitions corresponding to the plurality of micro flow channels, process the real-time temperature matrix based on an intelligent temperature compensation algorithm stored in the control system, and generate control instructions for the plurality of mold partitions; A collaborative temperature control execution module configured to receive the control instructions for the plurality of mold partitions and drive the molten salt circulating assembly and the nanofluid circulating assembly to collaboratively regulate temperatures of the micro flow channels according to the control instructions for the plurality of mold partitions.

6. The mold infrared temperature measuring temperature regulating device for preventing stress lines of a molded bottle made of neutral borosilicate according to claim 5, characterized by, The temperature field acquisition module is specifically configured to: Fuse infrared data in 3-5 μm and 8-14 μm bands collected by the infrared thermal imager, and construct a grid temperature matrix with a resolution of no less than 256x256 as the real-time temperature matrix.

7. The mold infrared temperature measuring temperature regulating device for preventing stress lines of a molded bottle made of neutral borosilicate according to claim 5, characterized by, When processing the real-time temperature matrix, the feature extraction and decision module is further configured to calculate a spatial temperature gradient representing a local temperature difference and a time temperature gradient representing a temperature change rate, and use the spatial temperature gradient representing the local temperature difference and the time temperature gradient representing the temperature change rate for operation of the intelligent temperature compensation algorithm, to generate the control instructions for the plurality of mold partitions capable of intervening in potential temperature changes in advance.

8. The mold infrared temperature measuring temperature regulating device for preventing stress lines of a molded bottle made of neutral borosilicate according to claim 7, characterized by, The intelligent temperature compensation algorithm comprises: A prediction model based on a long short-term memory network and a thermal deformation compensation model based on a thermal expansion coefficient of a mold material; The prediction model based on the long short-term memory network predicts future temperature changes using the real-time temperature matrix, the spatial temperature gradient, and the temporal temperature gradient; The thermal deformation compensation model based on the thermal expansion coefficient of the mold material dynamically corrects the temperature set value of the processing requirement according to the temperature data of the real-time temperature matrix and the preset thermal expansion coefficient of the mold material.

9. The mold infrared temperature measuring temperature regulating device for preventing stress lines of a molded bottle made of neutral borosilicate according to claim 5, characterized by, The cooperative temperature control execution module is configured to selectively drive the molten salt circulating assembly or the nanofluid circulating assembly to adjust the temperature of the micro flow channel according to a comparison result of the mold partition temperature and a system set temperature threshold, and specifically: When the mold partition temperature is higher than the system set temperature threshold, the molten salt circulating assembly is driven to adjust the temperature of the micro flow channel. When the mold partition temperature is lower than the system set temperature threshold, the nanofluid circulating assembly is driven to adjust the temperature of the micro flow channel.

10. The mold infrared temperature measuring temperature regulating device for preventing stress lines of a molded bottle made of neutral borosilicate according to claim 5, characterized by, The cooperative temperature control execution module executes the control instruction through the piezoelectric ceramic driving proportional valve one (27) and the piezoelectric ceramic driving proportional valve two (30), and is configured to quickly adjust the flow of the molten salt circulating assembly and the nanofluid circulating assembly.

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